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<li class="toctree-l1"><a class="reference internal" href="../intro/index.html">Introduction</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../examples.html#grid">Grid</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#a-simple-grid">A simple grid</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#demonstrate-cell-placement-and-span">Demonstrate cell placement and span</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#demonstrate-grid-s-free-unit">Demonstrate grid's -free unit-</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#demonstrate-track-placement">Demonstrate track placement</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#demonstrate-column-and-row-gap">Demonstrate column and row gap</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#demonstrate-rtl-direction-on-grid">Demonstrate RTL direction on grid</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../examples.html#scrolling">Scrolling</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#nested-scrolling">Nested scrolling</a></li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#snapping">Snapping</a></li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#floating-button">Floating button</a></li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#styling-the-scrollbars">Styling the scrollbars</a></li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#right-to-left-scrolling">Right to left scrolling</a></li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#translate-on-scroll">Translate on scroll</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../examples.html#widgets">Widgets</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#base-object">Base object</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#base-objects-with-custom-styles">Base objects with custom styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#make-an-object-draggable">Make an object draggable</a></li>
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<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-arc">Simple Arc</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#loader-with-arc">Loader with Arc</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../examples.html#bar">Bar</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-bar">Simple Bar</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#styling-a-bar">Styling a bar</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#temperature-meter">Temperature meter</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#stripe-pattern-and-range-value">Stripe pattern and range value</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#bar-with-ltr-and-rtl-base-direction">Bar with LTR and RTL base direction</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#custom-drawer-to-show-the-current-value">Custom drawer to show the current value</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#bar-with-opposite-direction">Bar with opposite direction</a></li>
</ul>
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<li class="toctree-l3"><a class="reference internal" href="../examples.html#button">Button</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-buttons">Simple Buttons</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#styling-buttons">Styling buttons</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#gummy-button">Gummy button</a></li>
</ul>
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<li class="toctree-l3"><a class="reference internal" href="../examples.html#button-matrix">Button matrix</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-button-matrix">Simple Button matrix</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#custom-buttons">Custom buttons</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#pagination">Pagination</a></li>
</ul>
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<li class="toctree-l3"><a class="reference internal" href="../examples.html#calendar">Calendar</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#calendar-with-header">Calendar with header</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#canvas">Canvas</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#drawing-on-the-canvas-and-rotate">Drawing on the Canvas and rotate</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#transparent-canvas-with-chroma-keying">Transparent Canvas with chroma keying</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#draw-a-rectangle-to-the-canvas">Draw a rectangle to the canvas</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#draw-a-label-to-the-canvas">Draw a label to the canvas</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#draw-an-arc-to-the-canvas">Draw an arc to the canvas</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#draw-an-image-to-the-canvas">Draw an image to the canvas</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#draw-a-line-to-the-canvas">Draw a line to the canvas</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#chart">Chart</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#line-chart">Line Chart</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#axis-ticks-and-labels-with-scrolling">Axis ticks and labels with scrolling</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#show-the-value-of-the-pressed-points">Show the value of the pressed points</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#recolor-bars-based-on-their-value">Recolor bars based on their value</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#faded-area-line-chart-with-custom-division-lines">Faded area line chart with custom division lines</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#show-cursor-on-the-clicked-point">Show cursor on the clicked point</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#scatter-chart">Scatter chart</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#checkbox">Checkbox</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-checkboxes">Simple Checkboxes</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#checkboxes-as-radio-buttons">Checkboxes as radio buttons</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#colorwheel">Colorwheel</a></li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#dropdown">Dropdown</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-drop-down-list">Simple Drop down list</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#drop-down-in-four-directions">Drop down in four directions</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#menu">Menu</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#image">Image</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#image-from-variable-and-symbol">Image from variable and symbol</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#image-recoloring">Image recoloring</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#rotate-and-zoom">Rotate and zoom</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#image-offset-and-styling">Image offset and styling</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#image-button">Image button</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-image-button">Simple Image button</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#keyboard">Keyboard</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#keyboard-with-text-area">Keyboard with text area</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#keyboard-with-custom-map">Keyboard with custom map</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#label">Label</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#line-wrap-recoloring-and-scrolling">Line wrap, recoloring and scrolling</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#text-shadow">Text shadow</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#show-ltr-rtl-and-chinese-texts">Show LTR, RTL and Chinese texts</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#draw-label-with-gradient-color">Draw label with gradient color</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#customize-circular-scrolling-animation">Customize circular scrolling animation</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#led">LED</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#led-with-custom-style">LED with custom style</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#line">Line</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-line">Simple Line</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#list">List</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-list">Simple List</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#sorting-a-list-using-up-and-down-buttons">Sorting a List using up and down buttons</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#id3">Menu</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-menu">Simple Menu</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-menu-with-root-btn">Simple Menu with root btn</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-menu-with-custom-header">Simple Menu with custom header</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-menu-with-floating-btn-to-add-new-menu-page">Simple Menu with floating btn to add new menu page</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#complex-menu">Complex Menu</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#meter">Meter</a></li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#message-box">Message box</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-message-box">Simple Message box</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#roller">Roller</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-roller">Simple Roller</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#styling-the-roller">Styling the roller</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#add-fade-mask-to-roller">add fade mask to roller</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#scale">Scale</a></li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#slider">Slider</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-slider">Simple Slider</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#slider-with-custom-style">Slider with custom style</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#slider-with-extended-drawer">Slider with extended drawer</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#slider-with-opposite-direction">Slider with opposite direction</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#span">Span</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#span-with-custom-styles">Span with custom styles</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#spinbox">Spinbox</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-spinbox">Simple Spinbox</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#spinner">Spinner</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-spinner">Simple spinner</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#switch">Switch</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-switch">Simple Switch</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#table">Table</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-table">Simple table</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#lightweighted-list-from-table">Lightweighted list from table</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#tabview">Tabview</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-tabview">Simple Tabview</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#tabs-on-the-left-styling-and-no-scrolling">Tabs on the left, styling and no scrolling</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#textarea">Textarea</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-text-area">Simple Text area</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#text-area-with-password-field">Text area with password field</a></li>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#text-auto-formatting">Text auto-formatting</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#id4">Tabview</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#tileview-with-content">Tileview with content</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../examples.html#window">Window</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../examples.html#simple-window">Simple window</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../get-started/index.html">Get started</a><ul>
<li class="toctree-l2"><a class="reference internal" href="../get-started/quick-overview.html">Quick overview</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../get-started/quick-overview.html#get-started-in-a-simulator">Get started in a simulator</a></li>
<li class="toctree-l3"><a class="reference internal" href="../get-started/quick-overview.html#add-lvgl-into-your-project">Add LVGL into your project</a></li>
<li class="toctree-l3"><a class="reference internal" href="../get-started/quick-overview.html#learn-the-basics">Learn the basics</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../get-started/quick-overview.html#widgets">Widgets</a></li>
<li class="toctree-l4"><a class="reference internal" href="../get-started/quick-overview.html#events">Events</a></li>
<li class="toctree-l4"><a class="reference internal" href="../get-started/quick-overview.html#parts">Parts</a></li>
<li class="toctree-l4"><a class="reference internal" href="../get-started/quick-overview.html#states">States</a></li>
<li class="toctree-l4"><a class="reference internal" href="../get-started/quick-overview.html#styles">Styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="../get-started/quick-overview.html#themes">Themes</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../get-started/quick-overview.html#examples">Examples</a></li>
<li class="toctree-l3"><a class="reference internal" href="../get-started/quick-overview.html#a-very-simple-hello-world-label">A very simple <em>hello world</em> label</a></li>
<li class="toctree-l3"><a class="reference internal" href="../get-started/quick-overview.html#a-button-with-a-label-and-react-on-click-event">A button with a label and react on click event</a></li>
<li class="toctree-l3"><a class="reference internal" href="../get-started/quick-overview.html#create-styles-from-scratch-for-buttons">Create styles from scratch for buttons</a></li>
<li class="toctree-l3"><a class="reference internal" href="../get-started/quick-overview.html#create-a-slider-and-write-its-value-on-a-label">Create a slider and write its value on a label</a></li>
<li class="toctree-l3"><a class="reference internal" href="../get-started/quick-overview.html#micropython">Micropython</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../integration/index.html">Integration and Drivers</a><ul>
<li class="toctree-l2"><a class="reference internal" href="../integration/chip/index.html">Chip vendors</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../integration/chip/nxp.html">NXP</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/chip/nxp.html#creating-new-project-with-lvgl">Creating new project with LVGL</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/chip/nxp.html#hw-acceleration-for-nxp-imx-rt-platforms">HW acceleration for NXP iMX RT platforms</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../integration/chip/stm32.html">STM32</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/chip/stm32.html#including-lvgl-in-a-project">Including LVGL in a Project</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/chip/stm32.html#bare-metal-example">Bare Metal Example</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/chip/stm32.html#freertos-example">FreeRTOS Example</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../integration/chip/espressif.html">Espressif (ESP32 chip series)</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/chip/espressif.html#lvgl-demo-project-for-esp32">LVGL demo project for ESP32</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/chip/espressif.html#using-lvgl-in-your-esp-idf-project">Using LVGL in your ESP-IDF project</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/chip/espressif.html#using-lvgl-esp32-drivers-in-esp-idf-project">Using lvgl_esp32_drivers in ESP-IDF project</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../integration/driver/index.html">Drivers</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../integration/driver/display/index.html">Display</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/driver/display/ili9341.html">ILI9341</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../integration/driver/touchpad/index.html">Touchpad</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/driver/touchpad/ft6x36.html">FT6X36</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../integration/framework/index.html">Frameworks</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../integration/framework/arduino.html">Arduino</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/framework/arduino.html#get-the-lvgl-arduino-library">Get the LVGL Arduino library</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/framework/arduino.html#set-up-drivers">Set up drivers</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/framework/arduino.html#configure-lvgl">Configure LVGL</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/framework/arduino.html#initialize-and-run-lvgl">Initialize and run LVGL</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/framework/arduino.html#use-the-examples-and-demos">Use the examples and demos</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/framework/arduino.html#debugging-and-logging">Debugging and logging</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../integration/framework/platformio.html">Platformio</a></li>
<li class="toctree-l3"><a class="reference internal" href="../integration/framework/tasmota-berry.html">Tasmota and berry</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/framework/tasmota-berry.html#what-is-tasmota">What is Tasmota?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/framework/tasmota-berry.html#what-is-berry">What is Berry?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/framework/tasmota-berry.html#why-lvgl-tasmota-berry">Why LVGL + Tasmota + Berry?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/framework/tasmota-berry.html#so-what-does-it-look-like">So what does it look like?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/framework/tasmota-berry.html#how-can-i-use-it">How can I use it?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/framework/tasmota-berry.html#where-can-i-find-more-information">Where can I find more information?</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../integration/ide/index.html">IDEs</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../integration/ide/pc-simulator.html">Simulator on PC</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/ide/pc-simulator.html#select-an-ide">Select an IDE</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/ide/pc-simulator.html#set-up-eclipse-cdt">Set-up Eclipse CDT</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../integration/ide/mdk.html">MDK</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../integration/os/index.html">(RT)OS</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../integration/os/nuttx.html">NuttX RTOS</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/os/nuttx.html#what-is-nuttx">What is NuttX?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/os/nuttx.html#why-nuttx-lvgl">Why NuttX + LVGL?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/os/nuttx.html#how-to-get-started-with-nuttx-and-lvgl">How to get started with NuttX and LVGL?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/os/nuttx.html#where-can-i-find-more-information">Where can I find more information?</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../integration/os/rt-thread.html">RT-Thread RTOS</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/os/rt-thread.html#what-is-rt-thread">What is RT-Thread?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/os/rt-thread.html#how-to-run-lvgl-on-rt-thread">How to run LVGL on RT-Thread?</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../integration/os/freertos.html">FreeRTOS</a></li>
<li class="toctree-l3"><a class="reference internal" href="../integration/os/zephyr.html">Zephyr</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/os/zephyr.html#what-is-zephyr">What is Zephyr?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/os/zephyr.html#how-to-run-lvgl-on-zephyr">How to run LVGL on Zephyr?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/os/zephyr.html#leveraging-zephyr-features">Leveraging Zephyr Features</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/os/zephyr.html#where-can-i-find-more-information">Where can I find more information?</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../integration/os/px5.html">PX5 RTOS</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../integration/bindings/index.html">Bindings</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../integration/bindings/micropython.html">Micropython</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/micropython.html#what-is-micropython">What is Micropython?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/micropython.html#why-micropython-lvgl">Why Micropython + LVGL?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/micropython.html#so-what-does-it-look-like">So what does it look like?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/micropython.html#how-can-i-use-it">How can I use it?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/micropython.html#where-can-i-find-more-information">Where can I find more information?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/micropython.html#the-micropython-binding-is-auto-generated">The Micropython Binding is auto generated!</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../integration/bindings/cpp.html">Cpp</a></li>
<li class="toctree-l3"><a class="reference internal" href="../integration/bindings/pikascript.html">PikaScript</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/pikascript.html#what-is-pikascript">What is PikaScript ?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/pikascript.html#why-pikascript-lvgl">Why PikaScript + LVGL ?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/pikascript.html#so-how-does-it-look-like">So how does it look like?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/pikascript.html#how-does-it-work">How does it work?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/pikascript.html#how-can-i-use-it">How can I use it?</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../integration/bindings/javascript.html">JavaScript</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/javascript.html#table-of-contents">Table of Contents</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/javascript.html#features">Features</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/javascript.html#demo">Demo</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/javascript.html#building">Building</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/javascript.html#components">Components</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/javascript.html#font">Font</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/javascript.html#animation">Animation</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/javascript.html#style">Style</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/javascript.html#jsapi">JSAPI</a></li>
<li class="toctree-l4"><a class="reference internal" href="../integration/bindings/javascript.html#thanks">Thanks</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../porting/index.html">Porting</a><ul>
<li class="toctree-l2"><a class="reference internal" href="../porting/project.html">Set up a project</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../porting/project.html#get-the-library">Get the library</a></li>
<li class="toctree-l3"><a class="reference internal" href="../porting/project.html#add-lvgl-to-your-project">Add lvgl to your project</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../porting/project.html#automatically-add-files">Automatically add files</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/project.html#make-and-cmake">Make and CMake</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/project.html#other-platforms-and-tools">Other platforms and tools</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/project.html#demos-and-examples">Demos and Examples</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../porting/project.html#configuration-file">Configuration file</a></li>
<li class="toctree-l3"><a class="reference internal" href="../porting/project.html#initialization">Initialization</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../porting/disp.html">Display interface</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../porting/disp.html#basic-setup">Basic setup</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../porting/disp.html#flush-cb">flush_cb</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/disp.html#draw-buffers">Draw buffers</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../porting/disp.html#advanced-options">Advanced options</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../porting/disp.html#resolution">Resolution</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/disp.html#rotation">Rotation</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/disp.html#color-format">Color format</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/disp.html#antialiasing">Antialiasing</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/disp.html#user-data">User data</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../porting/disp.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../porting/disp.html#other-options">Other options</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../porting/disp.html#decoupling-the-display-refresh-timer">Decoupling the display refresh timer</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../porting/disp.html#further-reading">Further reading</a></li>
<li class="toctree-l3"><a class="reference internal" href="../porting/disp.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../porting/indev.html">Input device interface</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../porting/indev.html#types-of-input-devices">Types of input devices</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../porting/indev.html#touchpad-mouse-or-any-pointer">Touchpad, mouse or any pointer</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/indev.html#keypad-or-keyboard">Keypad or keyboard</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/indev.html#encoder">Encoder</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/indev.html#button">Button</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../porting/indev.html#other-features">Other features</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../porting/indev.html#parameters">Parameters</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/indev.html#feedback">Feedback</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/indev.html#associating-with-a-display">Associating with a display</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/indev.html#buffered-reading">Buffered reading</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/indev.html#decoupling-the-input-device-read-timer">Decoupling the input device read timer</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../porting/indev.html#further-reading">Further reading</a></li>
<li class="toctree-l3"><a class="reference internal" href="../porting/indev.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../porting/tick.html">Tick interface</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../porting/tick.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../porting/timer_handler.html">Timer Handler</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../porting/timer_handler.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../porting/sleep.html">Sleep management</a></li>
<li class="toctree-l2"><a class="reference internal" href="../porting/os.html">Operating system and interrupts</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../porting/os.html#tasks-and-threads">Tasks and threads</a></li>
<li class="toctree-l3"><a class="reference internal" href="../porting/os.html#interrupts">Interrupts</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../porting/log.html">Logging</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../porting/log.html#log-level">Log level</a></li>
<li class="toctree-l3"><a class="reference internal" href="../porting/log.html#printing-logs">Printing logs</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../porting/log.html#logging-with-printf">Logging with printf</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/log.html#custom-log-function">Custom log function</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../porting/log.html#add-logs">Add logs</a></li>
<li class="toctree-l3"><a class="reference internal" href="../porting/log.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../porting/draw.html">Add custom GPU</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../porting/draw.html#draw-context">Draw context</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../porting/draw.html#fields">Fields</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/draw.html#initialization">Initialization</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../porting/draw.html#software-renderer">Software renderer</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../porting/draw.html#blend-callback">Blend callback</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../porting/draw.html#extend-the-software-renderer">Extend the software renderer</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../porting/draw.html#new-blend-callback">New blend callback</a></li>
<li class="toctree-l4"><a class="reference internal" href="../porting/draw.html#new-rectangle-drawer">New rectangle drawer</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../porting/draw.html#fully-custom-draw-engine">Fully custom draw engine</a></li>
<li class="toctree-l3"><a class="reference internal" href="../porting/draw.html#api">API</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1 current"><a class="reference internal" href="index.html">Overview</a><ul class="current">
<li class="toctree-l2"><a class="reference internal" href="obj.html">Objects</a><ul>
<li class="toctree-l3"><a class="reference internal" href="obj.html#attributes">Attributes</a><ul>
<li class="toctree-l4"><a class="reference internal" href="obj.html#basic-attributes">Basic attributes</a></li>
<li class="toctree-l4"><a class="reference internal" href="obj.html#specific-attributes">Specific attributes</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="obj.html#working-mechanisms">Working mechanisms</a><ul>
<li class="toctree-l4"><a class="reference internal" href="obj.html#parent-child-structure">Parent-child structure</a></li>
<li class="toctree-l4"><a class="reference internal" href="obj.html#moving-together">Moving together</a></li>
<li class="toctree-l4"><a class="reference internal" href="obj.html#visibility-only-on-the-parent">Visibility only on the parent</a></li>
<li class="toctree-l4"><a class="reference internal" href="obj.html#create-and-delete-objects">Create and delete objects</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="obj.html#screens">Screens</a><ul>
<li class="toctree-l4"><a class="reference internal" href="obj.html#create-screens">Create screens</a></li>
<li class="toctree-l4"><a class="reference internal" href="obj.html#get-the-active-screen">Get the active screen</a></li>
<li class="toctree-l4"><a class="reference internal" href="obj.html#load-screens">Load screens</a></li>
<li class="toctree-l4"><a class="reference internal" href="obj.html#layers">Layers</a></li>
<li class="toctree-l4"><a class="reference internal" href="obj.html#handling-multiple-displays">Handling multiple displays</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="obj.html#parts">Parts</a></li>
<li class="toctree-l3"><a class="reference internal" href="obj.html#states">States</a></li>
<li class="toctree-l3"><a class="reference internal" href="obj.html#snapshot">Snapshot</a></li>
<li class="toctree-l3"><a class="reference internal" href="obj.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="coord.html">Positions, sizes, and layouts</a><ul>
<li class="toctree-l3"><a class="reference internal" href="coord.html#overview">Overview</a><ul>
<li class="toctree-l4"><a class="reference internal" href="coord.html#units">Units</a></li>
<li class="toctree-l4"><a class="reference internal" href="coord.html#boxing-model">Boxing model</a></li>
<li class="toctree-l4"><a class="reference internal" href="coord.html#important-notes">Important notes</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="coord.html#position">Position</a><ul>
<li class="toctree-l4"><a class="reference internal" href="coord.html#simple-way">Simple way</a></li>
<li class="toctree-l4"><a class="reference internal" href="coord.html#align">Align</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="coord.html#size">Size</a><ul>
<li class="toctree-l4"><a class="reference internal" href="coord.html#sizing-the-simple-way">Sizing the Simple way</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="coord.html#using-styles">Using styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="coord.html#translation">Translation</a></li>
<li class="toctree-l3"><a class="reference internal" href="coord.html#transformation">Transformation</a><ul>
<li class="toctree-l4"><a class="reference internal" href="coord.html#min-and-max-size">Min and Max size</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="coord.html#layout">Layout</a><ul>
<li class="toctree-l4"><a class="reference internal" href="coord.html#layout-overview">Layout Overview</a></li>
<li class="toctree-l4"><a class="reference internal" href="coord.html#built-in-layout">Built-in layout</a></li>
<li class="toctree-l4"><a class="reference internal" href="coord.html#flags">Flags</a></li>
<li class="toctree-l4"><a class="reference internal" href="coord.html#adding-new-layouts">Adding new layouts</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="coord.html#examples">Examples</a></li>
<li class="toctree-l3"><a class="reference internal" href="coord.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="style.html">Styles</a><ul>
<li class="toctree-l3"><a class="reference internal" href="style.html#states">States</a></li>
<li class="toctree-l3"><a class="reference internal" href="style.html#cascading-styles">Cascading styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="style.html#inheritance">Inheritance</a></li>
<li class="toctree-l3"><a class="reference internal" href="style.html#forced-value-inheritance-default-value">Forced value inheritance/default value</a></li>
<li class="toctree-l3"><a class="reference internal" href="style.html#parts">Parts</a></li>
<li class="toctree-l3"><a class="reference internal" href="style.html#initialize-styles-and-set-get-properties">Initialize styles and set/get properties</a></li>
<li class="toctree-l3"><a class="reference internal" href="style.html#add-and-remove-styles-to-a-widget">Add and remove styles to a widget</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style.html#add-styles">Add styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#replace-styles">Replace styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#remove-styles">Remove styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#report-style-changes">Report style changes</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#get-a-property-s-value-on-an-object">Get a property's value on an object</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style.html#local-styles">Local styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="style.html#properties">Properties</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style.html#typical-background-properties">Typical background properties</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style.html#transitions">Transitions</a></li>
<li class="toctree-l3"><a class="reference internal" href="style.html#opacity-blend-modes-and-transformations">Opacity, Blend modes and Transformations</a></li>
<li class="toctree-l3"><a class="reference internal" href="style.html#color-filter">Color filter</a></li>
<li class="toctree-l3"><a class="reference internal" href="style.html#themes">Themes</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style.html#extending-themes">Extending themes</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style.html#examples">Examples</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style.html#size-styles">Size styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#background-styles">Background styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#border-styles">Border styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#outline-styles">Outline styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#shadow-styles">Shadow styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#image-styles">Image styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#arc-styles">Arc styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#text-styles">Text styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#line-styles">Line styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#transition">Transition</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#using-multiple-styles">Using multiple styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#id2">Local styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#add-styles-to-parts-and-states">Add styles to parts and states</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#extending-the-current-theme">Extending the current theme</a></li>
<li class="toctree-l4"><a class="reference internal" href="style.html#opacity-and-transformations">Opacity and Transformations</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="style-props.html">Style properties</a><ul>
<li class="toctree-l3"><a class="reference internal" href="style-props.html#size-and-position">Size and position</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#width">width</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#min-width">min_width</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#max-width">max_width</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#height">height</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#min-height">min_height</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#max-height">max_height</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#x">x</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#y">y</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#align">align</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#transform-width">transform_width</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#transform-height">transform_height</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#translate-x">translate_x</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#translate-y">translate_y</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#transform-zoom">transform_zoom</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#transform-angle">transform_angle</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#transform-pivot-x">transform_pivot_x</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#transform-pivot-y">transform_pivot_y</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style-props.html#padding">Padding</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#pad-top">pad_top</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#pad-bottom">pad_bottom</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#pad-left">pad_left</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#pad-right">pad_right</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#pad-row">pad_row</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#pad-column">pad_column</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style-props.html#margin">Margin</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#margin-top">margin_top</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#margin-bottom">margin_bottom</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#margin-left">margin_left</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#margin-right">margin_right</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style-props.html#background">Background</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#bg-color">bg_color</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#bg-opa">bg_opa</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#bg-grad-color">bg_grad_color</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#bg-grad-dir">bg_grad_dir</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#bg-main-stop">bg_main_stop</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#bg-grad-stop">bg_grad_stop</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#bg-grad">bg_grad</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#bg-dither-mode">bg_dither_mode</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#bg-img-src">bg_img_src</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#bg-img-opa">bg_img_opa</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#bg-img-recolor">bg_img_recolor</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#bg-img-recolor-opa">bg_img_recolor_opa</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#bg-img-tiled">bg_img_tiled</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style-props.html#border">Border</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#border-color">border_color</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#border-opa">border_opa</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#border-width">border_width</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#border-side">border_side</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#border-post">border_post</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style-props.html#outline">Outline</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#outline-width">outline_width</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#outline-color">outline_color</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#outline-opa">outline_opa</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#outline-pad">outline_pad</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style-props.html#shadow">Shadow</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#shadow-width">shadow_width</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#shadow-ofs-x">shadow_ofs_x</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#shadow-ofs-y">shadow_ofs_y</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#shadow-spread">shadow_spread</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#shadow-color">shadow_color</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#shadow-opa">shadow_opa</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style-props.html#image">Image</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#img-opa">img_opa</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#img-recolor">img_recolor</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#img-recolor-opa">img_recolor_opa</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style-props.html#line">Line</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#line-width">line_width</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#line-dash-width">line_dash_width</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#line-dash-gap">line_dash_gap</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#line-rounded">line_rounded</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#line-color">line_color</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#line-opa">line_opa</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style-props.html#arc">Arc</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#arc-width">arc_width</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#arc-rounded">arc_rounded</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#arc-color">arc_color</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#arc-opa">arc_opa</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#arc-img-src">arc_img_src</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style-props.html#text">Text</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#text-color">text_color</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#text-opa">text_opa</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#text-font">text_font</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#text-letter-space">text_letter_space</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#text-line-space">text_line_space</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#text-decor">text_decor</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#text-align">text_align</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="style-props.html#miscellaneous">Miscellaneous</a><ul>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#radius">radius</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#clip-corner">clip_corner</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#opa">opa</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#color-filter-dsc">color_filter_dsc</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#color-filter-opa">color_filter_opa</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#anim">anim</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#anim-time">anim_time</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#anim-speed">anim_speed</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#transition">transition</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#blend-mode">blend_mode</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#layout">layout</a></li>
<li class="toctree-l4"><a class="reference internal" href="style-props.html#base-dir">base_dir</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2 current"><a class="current reference internal" href="#">Scroll</a><ul>
<li class="toctree-l3"><a class="reference internal" href="#overview">Overview</a><ul>
<li class="toctree-l4"><a class="reference internal" href="#scrollbar">Scrollbar</a></li>
<li class="toctree-l4"><a class="reference internal" href="#events">Events</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="#basic-example">Basic example</a></li>
<li class="toctree-l3"><a class="reference internal" href="#features-of-scrolling">Features of scrolling</a><ul>
<li class="toctree-l4"><a class="reference internal" href="#scrollable">Scrollable</a></li>
<li class="toctree-l4"><a class="reference internal" href="#scroll-chain">Scroll chain</a></li>
<li class="toctree-l4"><a class="reference internal" href="#scroll-momentum">Scroll momentum</a></li>
<li class="toctree-l4"><a class="reference internal" href="#elastic-scroll">Elastic scroll</a></li>
<li class="toctree-l4"><a class="reference internal" href="#snapping">Snapping</a></li>
<li class="toctree-l4"><a class="reference internal" href="#scroll-one">Scroll one</a></li>
<li class="toctree-l4"><a class="reference internal" href="#scroll-on-focus">Scroll on focus</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="#scroll-manually">Scroll manually</a></li>
<li class="toctree-l3"><a class="reference internal" href="#self-size">Self size</a></li>
<li class="toctree-l3"><a class="reference internal" href="#examples">Examples</a><ul>
<li class="toctree-l4"><a class="reference internal" href="#nested-scrolling">Nested scrolling</a></li>
<li class="toctree-l4"><a class="reference internal" href="#id1">Snapping</a></li>
<li class="toctree-l4"><a class="reference internal" href="#floating-button">Floating button</a></li>
<li class="toctree-l4"><a class="reference internal" href="#styling-the-scrollbars">Styling the scrollbars</a></li>
<li class="toctree-l4"><a class="reference internal" href="#right-to-left-scrolling">Right to left scrolling</a></li>
<li class="toctree-l4"><a class="reference internal" href="#translate-on-scroll">Translate on scroll</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="layer.html">Layers</a><ul>
<li class="toctree-l3"><a class="reference internal" href="layer.html#order-of-creation">Order of creation</a></li>
<li class="toctree-l3"><a class="reference internal" href="layer.html#change-order">Change order</a></li>
<li class="toctree-l3"><a class="reference internal" href="layer.html#top-and-sys-layers">Top and sys layers</a></li>
<li class="toctree-l3"><a class="reference internal" href="layer.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="event.html">Events</a><ul>
<li class="toctree-l3"><a class="reference internal" href="event.html#add-events-to-the-object">Add events to the object</a></li>
<li class="toctree-l3"><a class="reference internal" href="event.html#remove-event-s-from-an-object">Remove event(s) from an object</a></li>
<li class="toctree-l3"><a class="reference internal" href="event.html#event-codes">Event codes</a><ul>
<li class="toctree-l4"><a class="reference internal" href="event.html#input-device-events">Input device events</a></li>
<li class="toctree-l4"><a class="reference internal" href="event.html#drawing-events">Drawing events</a></li>
<li class="toctree-l4"><a class="reference internal" href="event.html#other-events">Other events</a></li>
<li class="toctree-l4"><a class="reference internal" href="event.html#special-events">Special events</a></li>
<li class="toctree-l4"><a class="reference internal" href="event.html#custom-events">Custom events</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="event.html#sending-events">Sending events</a><ul>
<li class="toctree-l4"><a class="reference internal" href="event.html#refresh-event">Refresh event</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="event.html#fields-of-lv-event-t">Fields of lv_event_t</a></li>
<li class="toctree-l3"><a class="reference internal" href="event.html#event-bubbling">Event bubbling</a></li>
<li class="toctree-l3"><a class="reference internal" href="event.html#examples">Examples</a><ul>
<li class="toctree-l4"><a class="reference internal" href="event.html#button-click-event">Button click event</a></li>
<li class="toctree-l4"><a class="reference internal" href="event.html#handle-multiple-events">Handle multiple events</a></li>
<li class="toctree-l4"><a class="reference internal" href="event.html#id2">Event bubbling</a></li>
<li class="toctree-l4"><a class="reference internal" href="event.html#draw-event">Draw event</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="event.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="indev.html">Input devices</a><ul>
<li class="toctree-l3"><a class="reference internal" href="indev.html#pointers">Pointers</a><ul>
<li class="toctree-l4"><a class="reference internal" href="indev.html#cursor">Cursor</a></li>
<li class="toctree-l4"><a class="reference internal" href="indev.html#gestures">Gestures</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="indev.html#keypad-and-encoder">Keypad and encoder</a><ul>
<li class="toctree-l4"><a class="reference internal" href="indev.html#groups">Groups</a></li>
<li class="toctree-l4"><a class="reference internal" href="indev.html#styling">Styling</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="indev.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="disp.html">Displays</a><ul>
<li class="toctree-l3"><a class="reference internal" href="disp.html#multiple-display-support">Multiple display support</a><ul>
<li class="toctree-l4"><a class="reference internal" href="disp.html#using-only-one-display">Using only one display</a></li>
<li class="toctree-l4"><a class="reference internal" href="disp.html#mirror-display">Mirror display</a></li>
<li class="toctree-l4"><a class="reference internal" href="disp.html#split-image">Split image</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="disp.html#screens">Screens</a><ul>
<li class="toctree-l4"><a class="reference internal" href="disp.html#transparent-screens">Transparent screens</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="disp.html#features-of-displays">Features of displays</a><ul>
<li class="toctree-l4"><a class="reference internal" href="disp.html#inactivity">Inactivity</a></li>
<li class="toctree-l4"><a class="reference internal" href="disp.html#background">Background</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="disp.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="color.html">Colors</a><ul>
<li class="toctree-l3"><a class="reference internal" href="color.html#creating-colors">Creating colors</a><ul>
<li class="toctree-l4"><a class="reference internal" href="color.html#rgb">RGB</a></li>
<li class="toctree-l4"><a class="reference internal" href="color.html#hsv">HSV</a></li>
<li class="toctree-l4"><a class="reference internal" href="color.html#palette">Palette</a></li>
<li class="toctree-l4"><a class="reference internal" href="color.html#modify-and-mix-colors">Modify and mix colors</a></li>
<li class="toctree-l4"><a class="reference internal" href="color.html#built-in-colors">Built-in colors</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="color.html#opacity">Opacity</a></li>
<li class="toctree-l3"><a class="reference internal" href="color.html#color-types">Color types</a><ul>
<li class="toctree-l4"><a class="reference internal" href="color.html#convert-color">Convert color</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="color.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="font.html">Fonts</a><ul>
<li class="toctree-l3"><a class="reference internal" href="font.html#unicode-support">Unicode support</a></li>
<li class="toctree-l3"><a class="reference internal" href="font.html#built-in-fonts">Built-in fonts</a><ul>
<li class="toctree-l4"><a class="reference internal" href="font.html#special-fonts">Special fonts</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="font.html#special-features">Special features</a><ul>
<li class="toctree-l4"><a class="reference internal" href="font.html#bidirectional-support">Bidirectional support</a></li>
<li class="toctree-l4"><a class="reference internal" href="font.html#arabic-and-persian-support">Arabic and Persian support</a></li>
<li class="toctree-l4"><a class="reference internal" href="font.html#subpixel-rendering">Subpixel rendering</a></li>
<li class="toctree-l4"><a class="reference internal" href="font.html#compressed-fonts">Compressed fonts</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="font.html#add-a-new-font">Add a new font</a></li>
<li class="toctree-l3"><a class="reference internal" href="font.html#add-new-symbols">Add new symbols</a></li>
<li class="toctree-l3"><a class="reference internal" href="font.html#load-a-font-at-run-time">Load a font at run-time</a></li>
<li class="toctree-l3"><a class="reference internal" href="font.html#load-a-font-from-a-memory-buffer-at-run-time">Load a font from a memory buffer at run-time</a></li>
<li class="toctree-l3"><a class="reference internal" href="font.html#add-a-new-font-engine">Add a new font engine</a></li>
<li class="toctree-l3"><a class="reference internal" href="font.html#use-font-fallback">Use font fallback</a></li>
<li class="toctree-l3"><a class="reference internal" href="font.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="img.html">Images</a><ul>
<li class="toctree-l3"><a class="reference internal" href="img.html#store-images">Store images</a><ul>
<li class="toctree-l4"><a class="reference internal" href="img.html#variables">Variables</a></li>
<li class="toctree-l4"><a class="reference internal" href="img.html#files">Files</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="img.html#color-formats">Color formats</a></li>
<li class="toctree-l3"><a class="reference internal" href="img.html#add-and-use-images">Add and use images</a><ul>
<li class="toctree-l4"><a class="reference internal" href="img.html#online-converter">Online converter</a></li>
<li class="toctree-l4"><a class="reference internal" href="img.html#manually-create-an-image">Manually create an image</a></li>
<li class="toctree-l4"><a class="reference internal" href="img.html#use-images">Use images</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="img.html#image-decoder">Image decoder</a><ul>
<li class="toctree-l4"><a class="reference internal" href="img.html#custom-image-formats">Custom image formats</a></li>
<li class="toctree-l4"><a class="reference internal" href="img.html#register-an-image-decoder">Register an image decoder</a></li>
<li class="toctree-l4"><a class="reference internal" href="img.html#manually-use-an-image-decoder">Manually use an image decoder</a></li>
<li class="toctree-l4"><a class="reference internal" href="img.html#image-post-processing">Image post-processing</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="img.html#image-caching">Image caching</a><ul>
<li class="toctree-l4"><a class="reference internal" href="img.html#cache-size">Cache size</a></li>
<li class="toctree-l4"><a class="reference internal" href="img.html#value-of-images">Value of images</a></li>
<li class="toctree-l4"><a class="reference internal" href="img.html#memory-usage">Memory usage</a></li>
<li class="toctree-l4"><a class="reference internal" href="img.html#clean-the-cache">Clean the cache</a></li>
<li class="toctree-l4"><a class="reference internal" href="img.html#custom-cache-algorithm">Custom cache algorithm</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="img.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="fs.html">File system</a><ul>
<li class="toctree-l3"><a class="reference internal" href="fs.html#ready-to-use-drivers">Ready to use drivers</a></li>
<li class="toctree-l3"><a class="reference internal" href="fs.html#adding-a-driver">Adding a driver</a><ul>
<li class="toctree-l4"><a class="reference internal" href="fs.html#registering-a-driver">Registering a driver</a></li>
<li class="toctree-l4"><a class="reference internal" href="fs.html#implementing-the-callbacks">Implementing the callbacks</a></li>
<li class="toctree-l4"><a class="reference internal" href="fs.html#other-callbacks">Other callbacks</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="fs.html#usage-example">Usage example</a></li>
<li class="toctree-l3"><a class="reference internal" href="fs.html#use-drives-for-images">Use drives for images</a></li>
<li class="toctree-l3"><a class="reference internal" href="fs.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="anim.html">Animations</a><ul>
<li class="toctree-l3"><a class="reference internal" href="anim.html#create-an-animation">Create an animation</a></li>
<li class="toctree-l3"><a class="reference internal" href="anim.html#animation-path">Animation path</a></li>
<li class="toctree-l3"><a class="reference internal" href="anim.html#speed-vs-time">Speed vs time</a></li>
<li class="toctree-l3"><a class="reference internal" href="anim.html#delete-animations">Delete animations</a></li>
<li class="toctree-l3"><a class="reference internal" href="anim.html#timeline">Timeline</a></li>
<li class="toctree-l3"><a class="reference internal" href="anim.html#examples">Examples</a><ul>
<li class="toctree-l4"><a class="reference internal" href="anim.html#start-animation-on-an-event">Start animation on an event</a></li>
<li class="toctree-l4"><a class="reference internal" href="anim.html#playback-animation">Playback animation</a></li>
<li class="toctree-l4"><a class="reference internal" href="anim.html#animation-timeline">Animation timeline</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="anim.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="timer.html">Timers</a><ul>
<li class="toctree-l3"><a class="reference internal" href="timer.html#create-a-timer">Create a timer</a></li>
<li class="toctree-l3"><a class="reference internal" href="timer.html#ready-and-reset">Ready and Reset</a></li>
<li class="toctree-l3"><a class="reference internal" href="timer.html#set-parameters">Set parameters</a></li>
<li class="toctree-l3"><a class="reference internal" href="timer.html#repeat-count">Repeat count</a></li>
<li class="toctree-l3"><a class="reference internal" href="timer.html#enable-and-disable">Enable and Disable</a></li>
<li class="toctree-l3"><a class="reference internal" href="timer.html#pause-and-resume">Pause and Resume</a></li>
<li class="toctree-l3"><a class="reference internal" href="timer.html#measure-idle-time">Measure idle time</a></li>
<li class="toctree-l3"><a class="reference internal" href="timer.html#timer-handler-resume-callback">Timer handler resume callback</a></li>
<li class="toctree-l3"><a class="reference internal" href="timer.html#asynchronous-calls">Asynchronous calls</a></li>
<li class="toctree-l3"><a class="reference internal" href="timer.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="draw.html">Drawing</a><ul>
<li class="toctree-l3"><a class="reference internal" href="draw.html#mechanism-of-screen-refreshing">Mechanism of screen refreshing</a></li>
<li class="toctree-l3"><a class="reference internal" href="draw.html#masking">Masking</a><ul>
<li class="toctree-l4"><a class="reference internal" href="draw.html#using-masks">Using masks</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="draw.html#hook-drawing">Hook drawing</a><ul>
<li class="toctree-l4"><a class="reference internal" href="draw.html#main-drawing">Main drawing</a></li>
<li class="toctree-l4"><a class="reference internal" href="draw.html#post-drawing">Post drawing</a></li>
<li class="toctree-l4"><a class="reference internal" href="draw.html#part-drawing">Part drawing</a></li>
<li class="toctree-l4"><a class="reference internal" href="draw.html#others">Others</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="draw.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="profiler.html">Profiler</a><ul>
<li class="toctree-l3"><a class="reference internal" href="profiler.html#introduction">Introduction</a></li>
<li class="toctree-l3"><a class="reference internal" href="profiler.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="profiler.html#configure-profiler">Configure profiler</a></li>
<li class="toctree-l4"><a class="reference internal" href="profiler.html#run-the-test-scenario">Run the test scenario</a></li>
<li class="toctree-l4"><a class="reference internal" href="profiler.html#process-the-logs">Process the logs</a></li>
<li class="toctree-l4"><a class="reference internal" href="profiler.html#performance-analysis">Performance analysis</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="profiler.html#add-measurement-point">Add Measurement Point</a></li>
<li class="toctree-l3"><a class="reference internal" href="profiler.html#custom-profiler-implementation">Custom profiler implementation</a></li>
<li class="toctree-l3"><a class="reference internal" href="profiler.html#faq">FAQ</a><ul>
<li class="toctree-l4"><a class="reference internal" href="profiler.html#perfetto-log-parsing-fails">Perfetto log parsing fails</a></li>
<li class="toctree-l4"><a class="reference internal" href="profiler.html#function-execution-time-displayed-as-0s-in-perfetto">Function execution time displayed as 0s in Perfetto</a></li>
<li class="toctree-l4"><a class="reference internal" href="profiler.html#significant-stuttering-occurs-during-profiling">Significant stuttering occurs during profiling</a></li>
<li class="toctree-l4"><a class="reference internal" href="profiler.html#trace-logs-are-not-being-output">Trace logs are not being output</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="renderers/index.html">Renderers and GPUs</a><ul>
<li class="toctree-l3"><a class="reference internal" href="renderers/sw.html">Software renderer</a><ul>
<li class="toctree-l4"><a class="reference internal" href="renderers/sw.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="renderers/sdl.html">SDL renderer</a><ul>
<li class="toctree-l4"><a class="reference internal" href="renderers/sdl.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="renderers/arm2d.html">Arm-2D GPU</a><ul>
<li class="toctree-l4"><a class="reference internal" href="renderers/arm2d.html#how-to-use">How to Use</a></li>
<li class="toctree-l4"><a class="reference internal" href="renderers/arm2d.html#design-considerations">Design Considerations</a></li>
<li class="toctree-l4"><a class="reference internal" href="renderers/arm2d.html#examples">Examples</a></li>
<li class="toctree-l4"><a class="reference internal" href="renderers/arm2d.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="renderers/pxp.html">NXP PXP GPU</a><ul>
<li class="toctree-l4"><a class="reference internal" href="renderers/pxp.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="renderers/stm32_dma2d.html">DMA2D GPU</a><ul>
<li class="toctree-l4"><a class="reference internal" href="renderers/stm32_dma2d.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="renderers/vglite.html">NXP VGLite GPU</a><ul>
<li class="toctree-l4"><a class="reference internal" href="renderers/vglite.html#api">API</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="new_widget.html">New widget</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../widgets/index.html">Widgets</a><ul>
<li class="toctree-l2"><a class="reference internal" href="../widgets/obj.html">Base object (lv_obj)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/obj.html#overview">Overview</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/obj.html#coordinates">Coordinates</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/obj.html#parents-and-children">Parents and children</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/obj.html#display-and-screens">Display and Screens</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/obj.html#events">Events</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/obj.html#styles">Styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/obj.html#flags">Flags</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/obj.html#groups">Groups</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/obj.html#extended-click-area">Extended click area</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/obj.html#events-1">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/obj.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/obj.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/obj.html#base-objects-with-custom-styles">Base objects with custom styles</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/obj.html#make-an-object-draggable">Make an object draggable</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/obj.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/arc.html">Arc (lv_arc)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/arc.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/arc.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/arc.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/arc.html#value-and-range">Value and range</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/arc.html#rotation">Rotation</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/arc.html#mode">Mode</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/arc.html#change-rate">Change rate</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/arc.html#knob-offset">Knob offset</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/arc.html#setting-the-indicator-manually">Setting the indicator manually</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/arc.html#advanced-hit-test">Advanced hit test</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/arc.html#place-another-object-to-the-knob">Place another object to the knob</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/arc.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/arc.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/arc.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/arc.html#simple-arc">Simple Arc</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/arc.html#loader-with-arc">Loader with Arc</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/arc.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/animimg.html">Animation Image (lv_animimg)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/animimg.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/animimg.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/animimg.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/animimg.html#image-sources">Image sources</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/animimg.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/animimg.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/animimg.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/animimg.html#simple-animation-image">Simple Animation Image</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/animimg.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/bar.html">Bar (lv_bar)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/bar.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/bar.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/bar.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/bar.html#value-and-range">Value and range</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/bar.html#modes">Modes</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/bar.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/bar.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/bar.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/bar.html#simple-bar">Simple Bar</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/bar.html#styling-a-bar">Styling a bar</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/bar.html#temperature-meter">Temperature meter</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/bar.html#stripe-pattern-and-range-value">Stripe pattern and range value</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/bar.html#bar-with-ltr-and-rtl-base-direction">Bar with LTR and RTL base direction</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/bar.html#custom-drawer-to-show-the-current-value">Custom drawer to show the current value</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/bar.html#bar-with-opposite-direction">Bar with opposite direction</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/bar.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/btn.html">Button (lv_btn)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btn.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btn.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btn.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btn.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btn.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btn.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/btn.html#simple-buttons">Simple Buttons</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/btn.html#styling-buttons">Styling buttons</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/btn.html#gummy-button">Gummy button</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btn.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/btnmatrix.html">Button matrix (lv_btnmatrix)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btnmatrix.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btnmatrix.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btnmatrix.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/btnmatrix.html#button-s-text">Button's text</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/btnmatrix.html#control-buttons">Control buttons</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/btnmatrix.html#one-check">One check</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btnmatrix.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btnmatrix.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btnmatrix.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/btnmatrix.html#simple-button-matrix">Simple Button matrix</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/btnmatrix.html#custom-buttons">Custom buttons</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/btnmatrix.html#pagination">Pagination</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/btnmatrix.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/calendar.html">Calendar (lv_calendar)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/calendar.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/calendar.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/calendar.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/calendar.html#current-date">Current date</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/calendar.html#shown-date">Shown date</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/calendar.html#highlighted-days">Highlighted days</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/calendar.html#name-of-the-days">Name of the days</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/calendar.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/calendar.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/calendar.html#headers">Headers</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/calendar.html#arrow-buttons">Arrow buttons</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/calendar.html#drop-down">Drop-down</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/calendar.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/calendar.html#calendar-with-header">Calendar with header</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/calendar.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/chart.html">Chart (lv_chart)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/chart.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/chart.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/chart.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#chart-type">Chart type</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#data-series">Data series</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#modify-the-data">Modify the data</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#update-modes">Update modes</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#number-of-points">Number of points</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#vertical-range">Vertical range</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#division-lines">Division lines</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#override-default-start-point-for-series">Override default start point for series</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#tick-marks-and-labels">Tick marks and labels</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#zoom">Zoom</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#cursor">Cursor</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/chart.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/chart.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/chart.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#line-chart">Line Chart</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#axis-ticks-and-labels-with-scrolling">Axis ticks and labels with scrolling</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#show-the-value-of-the-pressed-points">Show the value of the pressed points</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#recolor-bars-based-on-their-value">Recolor bars based on their value</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#faded-area-line-chart-with-custom-division-lines">Faded area line chart with custom division lines</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#show-cursor-on-the-clicked-point">Show cursor on the clicked point</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/chart.html#scatter-chart">Scatter chart</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/chart.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/colorwheel.html">Color wheel (lv_colorwheel)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/colorwheel.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/colorwheel.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/colorwheel.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/colorwheel.html#create-a-color-wheel">Create a color wheel</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/colorwheel.html#set-color">Set color</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/colorwheel.html#color-mode">Color mode</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/colorwheel.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/colorwheel.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/colorwheel.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/colorwheel.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/canvas.html">Canvas (lv_canvas)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/canvas.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/canvas.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/canvas.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/canvas.html#buffer">Buffer</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/canvas.html#indexed-colors">Indexed colors</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/canvas.html#drawing">Drawing</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/canvas.html#transformations">Transformations</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/canvas.html#blur">Blur</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/canvas.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/canvas.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/canvas.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/canvas.html#drawing-on-the-canvas-and-rotate">Drawing on the Canvas and rotate</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/canvas.html#transparent-canvas-with-chroma-keying">Transparent Canvas with chroma keying</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/canvas.html#draw-a-rectangle-to-the-canvas">Draw a rectangle to the canvas</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/canvas.html#draw-a-label-to-the-canvas">Draw a label to the canvas</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/canvas.html#draw-an-arc-to-the-canvas">Draw an arc to the canvas</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/canvas.html#draw-an-image-to-the-canvas">Draw an image to the canvas</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/canvas.html#draw-a-line-to-the-canvas">Draw a line to the canvas</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/canvas.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/checkbox.html">Checkbox (lv_checkbox)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/checkbox.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/checkbox.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/checkbox.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/checkbox.html#text">Text</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/checkbox.html#check-uncheck-disable">Check, uncheck, disable</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/checkbox.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/checkbox.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/checkbox.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/checkbox.html#simple-checkboxes">Simple Checkboxes</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/checkbox.html#checkboxes-as-radio-buttons">Checkboxes as radio buttons</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/checkbox.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/dropdown.html">Drop-down list (lv_dropdown)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/dropdown.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/dropdown.html#parts-and-styles">Parts and Styles</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/dropdown.html#button">Button</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/dropdown.html#list">List</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/dropdown.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/dropdown.html#options">Options</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/dropdown.html#set-options">Set options</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/dropdown.html#get-selected-option">Get selected option</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/dropdown.html#direction">Direction</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/dropdown.html#symbol">Symbol</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/dropdown.html#show-selected">Show selected</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/dropdown.html#manually-open-close">Manually open/close</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/dropdown.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/dropdown.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/dropdown.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/dropdown.html#simple-drop-down-list">Simple Drop down list</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/dropdown.html#drop-down-in-four-directions">Drop down in four directions</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/dropdown.html#menu">Menu</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/dropdown.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/img.html">Image (lv_img)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/img.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/img.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/img.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#image-source">Image source</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#label-as-an-image">Label as an image</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#transparency">Transparency</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#palette-and-alpha-index">Palette and Alpha index</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#recolor">Recolor</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#auto-size">Auto-size</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#mosaic">Mosaic</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#offset">Offset</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/img.html#transformations">Transformations</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#size-mode">Size mode</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#rounded-image">Rounded image</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/img.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/img.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/img.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#image-from-variable-and-symbol">Image from variable and symbol</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#image-recoloring">Image recoloring</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#rotate-and-zoom">Rotate and zoom</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/img.html#image-offset-and-styling">Image offset and styling</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/img.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/imgbtn.html">Image button (lv_imgbtn)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/imgbtn.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/imgbtn.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/imgbtn.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/imgbtn.html#image-sources">Image sources</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/imgbtn.html#states">States</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/imgbtn.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/imgbtn.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/imgbtn.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/imgbtn.html#simple-image-button">Simple Image button</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/imgbtn.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/keyboard.html">Keyboard (lv_keyboard)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/keyboard.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/keyboard.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/keyboard.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/keyboard.html#modes">Modes</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/keyboard.html#assign-text-area">Assign Text area</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/keyboard.html#key-popovers">Key Popovers</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/keyboard.html#new-keymap">New Keymap</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/keyboard.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/keyboard.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/keyboard.html#examples">Examples</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/keyboard.html#keyboard-with-text-area">Keyboard with text area</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/keyboard.html#keyboard-with-custom-map">Keyboard with custom map</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/keyboard.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/label.html">Label (lv_label)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/label.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/label.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/label.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#set-text">Set text</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#newline">Newline</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#long-modes">Long modes</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#text-recolor">Text recolor</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#text-selection">Text selection</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#text-alignment">Text alignment</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#very-long-texts">Very long texts</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#custom-scrolling-animations">Custom scrolling animations</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#symbols">Symbols</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/label.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/label.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/label.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#line-wrap-recoloring-and-scrolling">Line wrap, recoloring and scrolling</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#text-shadow">Text shadow</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#show-ltr-rtl-and-chinese-texts">Show LTR, RTL and Chinese texts</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#draw-label-with-gradient-color">Draw label with gradient color</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/label.html#customize-circular-scrolling-animation">Customize circular scrolling animation</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/label.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/led.html">LED (lv_led)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/led.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/led.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/led.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/led.html#color">Color</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/led.html#brightness">Brightness</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/led.html#toggle">Toggle</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/led.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/led.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/led.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/led.html#led-with-custom-style">LED with custom style</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/led.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/line.html">Line (lv_line)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/line.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/line.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/line.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/line.html#set-points">Set points</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/line.html#auto-size">Auto-size</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/line.html#invert-y">Invert y</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/line.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/line.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/line.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/line.html#simple-line">Simple Line</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/line.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/list.html">List (lv_list)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/list.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/list.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/list.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/list.html#buttons">Buttons</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/list.html#texts">Texts</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/list.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/list.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/list.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/list.html#simple-list">Simple List</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/list.html#sorting-a-list-using-up-and-down-buttons">Sorting a List using up and down buttons</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/list.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/menu.html">Menu (lv_menu)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/menu.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/menu.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/menu.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/menu.html#create-a-menu">Create a menu</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/menu.html#header-mode">Header mode</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/menu.html#root-back-button-mode">Root back button mode</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/menu.html#create-a-menu-page">Create a menu page</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/menu.html#set-a-menu-page-in-the-main-area">Set a menu page in the main area</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/menu.html#set-a-menu-page-in-the-sidebar">Set a menu page in the sidebar</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/menu.html#linking-between-menu-pages">Linking between menu pages</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/menu.html#create-a-menu-container-section-separator">Create a menu container, section, separator</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/menu.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/menu.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/menu.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/menu.html#simple-menu">Simple Menu</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/menu.html#simple-menu-with-root-btn">Simple Menu with root btn</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/menu.html#simple-menu-with-custom-header">Simple Menu with custom header</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/menu.html#simple-menu-with-floating-btn-to-add-new-menu-page">Simple Menu with floating btn to add new menu page</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/menu.html#complex-menu">Complex Menu</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/menu.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/msgbox.html">Message box (lv_msgbox)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/msgbox.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/msgbox.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/msgbox.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/msgbox.html#create-a-message-box">Create a message box</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/msgbox.html#get-the-parts">Get the parts</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/msgbox.html#close-the-message-box">Close the message box</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/msgbox.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/msgbox.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/msgbox.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/msgbox.html#simple-message-box">Simple Message box</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/msgbox.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/roller.html">Roller (lv_roller)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/roller.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/roller.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/roller.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/roller.html#set-options">Set options</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/roller.html#get-selected-option">Get selected option</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/roller.html#visible-rows">Visible rows</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/roller.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/roller.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/roller.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/roller.html#simple-roller">Simple Roller</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/roller.html#styling-the-roller">Styling the roller</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/roller.html#add-fade-mask-to-roller">add fade mask to roller</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/roller.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/scale.html">Scale (lv_scale)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/scale.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/scale.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/scale.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/scale.html#set-ranges">Set ranges</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/scale.html#configure-ticks">Configure ticks</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/scale.html#sections">Sections</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/scale.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/scale.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/scale.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/scale.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/slider.html">Slider (lv_slider)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/slider.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/slider.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/slider.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/slider.html#value-and-range">Value and range</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/slider.html#modes">Modes</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/slider.html#knob-only-mode">Knob-only mode</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/slider.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/slider.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/slider.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/slider.html#simple-slider">Simple Slider</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/slider.html#slider-with-custom-style">Slider with custom style</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/slider.html#slider-with-extended-drawer">Slider with extended drawer</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/slider.html#slider-with-opposite-direction">Slider with opposite direction</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/slider.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/span.html">Span (lv_span)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/span.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/span.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/span.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/span.html#set-text-and-style">Set text and style</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/span.html#retrieving-a-span-child">Retrieving a span child</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/span.html#child-count">Child Count</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/span.html#text-align">Text align</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/span.html#modes">Modes</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/span.html#overflow">Overflow</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/span.html#first-line-indent">first line indent</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/span.html#lines">lines</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/span.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/span.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/span.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/span.html#span-with-custom-styles">Span with custom styles</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/span.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/spinbox.html">Spinbox (lv_spinbox)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/spinbox.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/spinbox.html#parts-and-styles">Parts and Styles</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/spinbox.html#value-range-and-step">Value, range and step</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/spinbox.html#format">Format</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/spinbox.html#rollover">Rollover</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/spinbox.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/spinbox.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/spinbox.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/spinbox.html#simple-spinbox">Simple Spinbox</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/spinbox.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/spinner.html">Spinner (lv_spinner)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/spinner.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/spinner.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/spinner.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/spinner.html#create-a-spinner">Create a spinner</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/spinner.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/spinner.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/spinner.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/spinner.html#simple-spinner">Simple spinner</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/spinner.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/switch.html">Switch (lv_switch)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/switch.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/switch.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/switch.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/switch.html#change-state">Change state</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/switch.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/switch.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/switch.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/switch.html#simple-switch">Simple Switch</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/switch.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/table.html">Table (lv_table)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/table.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/table.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/table.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/table.html#set-cell-value">Set cell value</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/table.html#rows-and-columns">Rows and Columns</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/table.html#width-and-height">Width and Height</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/table.html#merge-cells">Merge cells</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/table.html#scroll">Scroll</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/table.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/table.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/table.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/table.html#simple-table">Simple table</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/table.html#lightweighted-list-from-table">Lightweighted list from table</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/table.html#micropython">MicroPython</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/table.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/tabview.html">Tabview (lv_tabview)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tabview.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tabview.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tabview.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/tabview.html#create-a-tab-view">Create a Tab view</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/tabview.html#add-tabs">Add tabs</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/tabview.html#rename-tabs">Rename tabs</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/tabview.html#change-tab">Change tab</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/tabview.html#get-the-parts">Get the parts</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tabview.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tabview.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tabview.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/tabview.html#simple-tabview">Simple Tabview</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/tabview.html#tabs-on-the-left-styling-and-no-scrolling">Tabs on the left, styling and no scrolling</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tabview.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/textarea.html">Text area (lv_textarea)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/textarea.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/textarea.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/textarea.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#add-text">Add text</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#placeholder">Placeholder</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#delete-character">Delete character</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#move-the-cursor">Move the cursor</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#hide-the-cursor">Hide the cursor</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#one-line-mode">One line mode</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#password-mode">Password mode</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#accepted-characters">Accepted characters</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#max-text-length">Max text length</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#very-long-texts">Very long texts</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#select-text">Select text</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/textarea.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/textarea.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/textarea.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#simple-text-area">Simple Text area</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#text-area-with-password-field">Text area with password field</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/textarea.html#text-auto-formatting">Text auto-formatting</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/textarea.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/tileview.html">Tile view (lv_tileview)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tileview.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tileview.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tileview.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/tileview.html#add-a-tile">Add a tile</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/tileview.html#change-tile">Change tile</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tileview.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tileview.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tileview.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/tileview.html#tileview-with-content">Tileview with content</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/tileview.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../widgets/win.html">Window (lv_win)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../widgets/win.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/win.html#parts-and-styles">Parts and Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/win.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/win.html#create-a-window">Create a Window</a></li>
<li class="toctree-l4"><a class="reference internal" href="../widgets/win.html#title-and-buttons">Title and buttons</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/win.html#get-the-parts">Get the parts</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/win.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/win.html#keys">Keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/win.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../widgets/win.html#simple-window">Simple window</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../widgets/win.html#api">API</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../layouts/index.html">Layouts</a><ul>
<li class="toctree-l2"><a class="reference internal" href="../layouts/flex.html">Flex</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../layouts/flex.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../layouts/flex.html#terms">Terms</a></li>
<li class="toctree-l3"><a class="reference internal" href="../layouts/flex.html#simple-interface">Simple interface</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../layouts/flex.html#flex-flow">Flex flow</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/flex.html#flex-align">Flex align</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/flex.html#flex-grow">Flex grow</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../layouts/flex.html#style-interface">Style interface</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../layouts/flex.html#internal-padding">Internal padding</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../layouts/flex.html#other-features">Other features</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../layouts/flex.html#rtl">RTL</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/flex.html#new-track">New track</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../layouts/flex.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../layouts/flex.html#a-simple-row-and-a-column-layout-with-flexbox">A simple row and a column layout with flexbox</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/flex.html#arrange-items-in-rows-with-wrap-and-even-spacing">Arrange items in rows with wrap and even spacing</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/flex.html#demonstrate-flex-grow">Demonstrate flex grow</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/flex.html#id1">Demonstrate flex grow.</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/flex.html#demonstrate-column-and-row-gap-style-properties">Demonstrate column and row gap style properties</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/flex.html#rtl-base-direction-changes-order-of-the-items">RTL base direction changes order of the items</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../layouts/flex.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../layouts/grid.html">Grid</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../layouts/grid.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../layouts/grid.html#terms">Terms</a></li>
<li class="toctree-l3"><a class="reference internal" href="../layouts/grid.html#simple-interface">Simple interface</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../layouts/grid.html#grid-descriptors">Grid descriptors</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/grid.html#grid-items">Grid items</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/grid.html#grid-align">Grid align</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/grid.html#sub-grid">Sub grid</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../layouts/grid.html#style-interface">Style interface</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../layouts/grid.html#internal-padding">Internal padding</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../layouts/grid.html#other-features">Other features</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../layouts/grid.html#rtl">RTL</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../layouts/grid.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../layouts/grid.html#a-simple-grid">A simple grid</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/grid.html#demonstrate-cell-placement-and-span">Demonstrate cell placement and span</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/grid.html#demonstrate-grid-s-free-unit">Demonstrate grid's -free unit-</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/grid.html#demonstrate-track-placement">Demonstrate track placement</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/grid.html#demonstrate-column-and-row-gap">Demonstrate column and row gap</a></li>
<li class="toctree-l4"><a class="reference internal" href="../layouts/grid.html#demonstrate-rtl-direction-on-grid">Demonstrate RTL direction on grid</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../layouts/grid.html#api">API</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../libs/index.html">3rd party libraries</a><ul>
<li class="toctree-l2"><a class="reference internal" href="../libs/fs.html">File System Interfaces</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../libs/fs.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/fs.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../libs/bmp.html">BMP decoder</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../libs/bmp.html#limitations">Limitations</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/bmp.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/bmp.html#open-a-bmp-image-from-file">Open a BMP image from file</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/bmp.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../libs/tjpgd.html">TJPGD decoder</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../libs/tjpgd.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/tjpgd.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/tjpgd.html#converter">Converter</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../libs/tjpgd.html#converting-jpg-to-c-array">Converting JPG to C array</a></li>
<li class="toctree-l4"><a class="reference internal" href="../libs/tjpgd.html#converting-jpg-to-sjpg">Converting JPG to SJPG</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../libs/tjpgd.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/tjpgd.html#load-an-sjpg-image">Load an SJPG image</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/tjpgd.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../libs/libjpeg_turbo.html">libjpge-turbo decoder</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../libs/libjpeg_turbo.html#install">Install</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/libjpeg_turbo.html#add-libjpge-turbo-to-your-project">Add libjpge-turbo to your project</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/libjpeg_turbo.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/libjpeg_turbo.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/libjpeg_turbo.html#load-an-jpg-image">Load an JPG image</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/libjpeg_turbo.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../libs/lodepng.html">LODEPNG decoder</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../libs/lodepng.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/lodepng.html#open-a-png-image-from-file-and-variable">Open a PNG image from file and variable</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/lodepng.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../libs/libpng.html">libpng decoder</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../libs/libpng.html#install">Install</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/libpng.html#add-libpng-to-your-project">Add libpng to your project</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/libpng.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/libpng.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/libpng.html#open-a-png-image-from-file">Open a PNG image from file</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/libpng.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../libs/gif.html">GIF decoder</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../libs/gif.html#convert-gif-files-to-c-array">Convert GIF files to C array</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/gif.html#use-gif-images-from-file">Use GIF images from file</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/gif.html#memory-requirements">Memory requirements</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/gif.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/gif.html#open-a-gif-image-from-file-and-variable">Open a GIF image from file and variable</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/gif.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../libs/freetype.html">FreeType support</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../libs/freetype.html#add-freetype-to-your-project">Add FreeType to your project</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../libs/freetype.html#for-embedded-devices">For Embedded Devices</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../libs/freetype.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/freetype.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/freetype.html#open-a-front-with-freetype">Open a front with FreeType</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/freetype.html#learn-more">Learn more</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/freetype.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../libs/tiny_ttf.html">Tiny TTF font engine</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../libs/tiny_ttf.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/tiny_ttf.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/tiny_ttf.html#open-a-font-with-tiny-ttf-from-data-array">Open a font with Tiny TTF from data array</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/tiny_ttf.html#load-a-font-with-tiny-ttf-from-file">Load a font with Tiny_TTF from file</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/tiny_ttf.html#change-font-size-with-tiny-ttf">Change font size with Tiny_TTF</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/tiny_ttf.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../libs/qrcode.html">QR code</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../libs/qrcode.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/qrcode.html#notes">Notes</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/qrcode.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/qrcode.html#create-a-qr-code">Create a QR Code</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/qrcode.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../libs/barcode.html">Barcode</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../libs/barcode.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/barcode.html#notes">Notes</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/barcode.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/barcode.html#create-a-barcode">Create a Barcode</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/barcode.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../libs/rlottie.html">Lottie player</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../libs/rlottie.html#build-rlottie">Build Rlottie</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../libs/rlottie.html#esp-idf-example-at-bottom">ESP-IDF example at bottom</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../libs/rlottie.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../libs/rlottie.html#use-rlottie-from-file">Use Rlottie from file</a></li>
<li class="toctree-l4"><a class="reference internal" href="../libs/rlottie.html#use-rlottie-from-raw-string-data">Use Rlottie from raw string data</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../libs/rlottie.html#getting-animations">Getting animations</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/rlottie.html#controlling-animations">Controlling animations</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/rlottie.html#esp-idf-example">ESP-IDF Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../libs/rlottie.html#background">Background</a></li>
<li class="toctree-l4"><a class="reference internal" href="../libs/rlottie.html#idf-setup">IDF Setup</a></li>
<li class="toctree-l4"><a class="reference internal" href="../libs/rlottie.html#rlottie-patch-file">Rlottie patch file</a></li>
<li class="toctree-l4"><a class="reference internal" href="../libs/rlottie.html#cmakelists-for-idf">CMakeLists for IDF</a></li>
<li class="toctree-l4"><a class="reference internal" href="../libs/rlottie.html#additional-rlottie-considerations-in-esp-idf">Additional Rlottie considerations in ESP-IDF</a></li>
<li class="toctree-l4"><a class="reference internal" href="../libs/rlottie.html#additional-changes-to-make-use-of-spiram">Additional changes to make use of SPIRAM</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../libs/rlottie.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/rlottie.html#load-a-lottie-animation-from-raw-data">Load a Lottie animation from raw data</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/rlottie.html#load-a-lottie-animation-from-a-file">Load a Lottie animation from a file</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/rlottie.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../libs/ffmpeg.html">FFmpeg support</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../libs/ffmpeg.html#install-ffmpeg">Install FFmpeg</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/ffmpeg.html#add-ffmpeg-to-your-project">Add FFmpeg to your project</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/ffmpeg.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/ffmpeg.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/ffmpeg.html#decode-image">Decode image</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/ffmpeg.html#decode-video">Decode video</a></li>
<li class="toctree-l3"><a class="reference internal" href="../libs/ffmpeg.html#api">API</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../others/index.html">Others</a><ul>
<li class="toctree-l2"><a class="reference internal" href="../others/snapshot.html">Snapshot</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../others/snapshot.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../others/snapshot.html#free-the-image">Free the Image</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/snapshot.html#use-existing-buffer">Use Existing Buffer</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../others/snapshot.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/snapshot.html#simple-snapshot-example">Simple snapshot example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/snapshot.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../others/monkey.html">Monkey</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../others/monkey.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/monkey.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/monkey.html#touchpad-monkey-example">Touchpad monkey example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/monkey.html#encoder-monkey-example">Encoder monkey example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/monkey.html#button-monkey-example">Button monkey example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/monkey.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../others/gridnav.html">Grid navigation</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../others/gridnav.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/gridnav.html#focusable-objects">Focusable objects</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/gridnav.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/gridnav.html#basic-grid-navigation">Basic grid navigation</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/gridnav.html#grid-navigation-on-a-list">Grid navigation on a list</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/gridnav.html#nested-grid-navigations">Nested grid navigations</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/gridnav.html#simple-navigation-on-a-list-widget">Simple navigation on a list widget</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/gridnav.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../others/file_explorer.html">File Explorer</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../others/file_explorer.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../others/file_explorer.html#quick-access">Quick access</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/file_explorer.html#sort">Sort</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../others/file_explorer.html#event">Event</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/file_explorer.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/file_explorer.html#simple-file-explorer">Simple File Explorer</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/file_explorer.html#control-file-explorer">Control File Explorer</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/file_explorer.html#custom-sort">Custom sort</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/file_explorer.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../others/fragment.html">Fragment</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../others/fragment.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../others/fragment.html#create-fragment-class">Create Fragment Class</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/fragment.html#use-lv-fragment-manager">Use <code class="docutils literal notranslate"><span class="pre">lv_fragment_manager</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/fragment.html#fragment-based-navigation">Fragment Based Navigation</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../others/fragment.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/fragment.html#basic-fragment-usage">Basic fragment usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/fragment.html#stack-navigation-example">Stack navigation example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/fragment.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../others/observer.html">Observer</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../others/observer.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/observer.html#subject">Subject</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#subject-initialization">Subject initialization</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#set-subject-value">Set subject value</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#get-subject-s-value">Get subject's value</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#get-subject-s-previous-value">Get subject's previous value</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../others/observer.html#id1">Observer</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#subscribe-to-a-subject">Subscribe to a subject</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#unsubscribe-from-a-subject">Unsubscribe from a subject</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../others/observer.html#subject-groups">Subject groups</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/observer.html#widget-binding">Widget binding</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#base-object">Base object</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#button">Button</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#label">Label</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#arc">Arc</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#slider">Slider</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#roller">Roller</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#drop-down">Drop-down</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../others/observer.html#example">Example</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#bind-a-slider-s-value-to-a-label">Bind a slider's value to a label</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#handling-login-and-its-states">Handling login and its states</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#set-time-with-12-24-mode-and-am-pm">Set time with 12/24 mode and AM/PM</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#custom-tab-view-with-state-management">Custom tab view with state management</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#firmware-update-process">Firmware update process</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/observer.html#modular-style-update-on-theme-change">Modular style update on theme change</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../others/observer.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../others/imgfont.html">Image font (imgfont)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../others/imgfont.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/imgfont.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/imgfont.html#use-emojis-in-a-text">Use emojis in a text.</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/imgfont.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../others/ime_pinyin.html">Pinyin IME</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../others/ime_pinyin.html#usage">Usage</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/ime_pinyin.html#custom-dictionary">Custom dictionary</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../others/ime_pinyin.html#dictionary-format">Dictionary format</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/ime_pinyin.html#apply-new-dictionary">Apply new dictionary</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../others/ime_pinyin.html#modes">Modes</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/ime_pinyin.html#example">Example</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/ime_pinyin.html#pinyin-ime-26-key-input">Pinyin IME 26 key input</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/ime_pinyin.html#pinyin-ime-9-key-input">Pinyin IME 9 key input</a></li>
<li class="toctree-l3"><a class="reference internal" href="../others/ime_pinyin.html#api">API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../others/obj_id.html">OBJ ID</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../others/obj_id.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../others/obj_id.html#use-custom-id-generator">Use custom ID generator</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/obj_id.html#dump-obj-tree">Dump obj tree</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../others/obj_property.html">Widget Property</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../others/obj_property.html#usage">Usage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../others/obj_property.html#property-id">Property ID</a></li>
<li class="toctree-l4"><a class="reference internal" href="../others/obj_property.html#property-value">Property Value</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../others/obj_property.html#a-step-further">A Step Further</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../API/index.html">API</a><ul>
<li class="toctree-l2"><a class="reference internal" href="../API/lv_conf_internal.html">lv_conf_internal.h</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../API/lv_conf_internal.html#_CPPv418lv_value_precise_t"><code class="docutils literal notranslate"><span class="pre">lv_value_precise_t</span></code></a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../API/lv_conf_kconfig.html">lv_conf_kconfig.h</a></li>
<li class="toctree-l2"><a class="reference internal" href="../API/lvgl.html">lvgl.h</a></li>
<li class="toctree-l2"><a class="reference internal" href="../API/lv_init.html">lv_init.h</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../API/lv_init.html#_CPPv47lv_initv"><code class="docutils literal notranslate"><span class="pre">lv_init()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="../API/lv_init.html#_CPPv49lv_deinitv"><code class="docutils literal notranslate"><span class="pre">lv_deinit()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="../API/lv_init.html#_CPPv417lv_is_initializedv"><code class="docutils literal notranslate"><span class="pre">lv_is_initialized()</span></code></a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../API/lv_api_map.html">lv_api_map.h</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../API/lv_api_map.html#_CPPv48lv_res_t"><code class="docutils literal notranslate"><span class="pre">lv_res_t</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="../API/lv_api_map.html#_CPPv412lv_img_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_img_dsc_t</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="../API/lv_api_map.html#_CPPv49lv_disp_t"><code class="docutils literal notranslate"><span class="pre">lv_disp_t</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="../API/lv_api_map.html#_CPPv418lv_disp_rotation_t"><code class="docutils literal notranslate"><span class="pre">lv_disp_rotation_t</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="../API/lv_api_map.html#_CPPv416lv_disp_render_t"><code class="docutils literal notranslate"><span class="pre">lv_disp_render_t</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="../API/lv_api_map.html#_CPPv415lv_task_handlerv"><code class="docutils literal notranslate"><span class="pre">lv_task_handler()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="../API/lv_api_map.html#_CPPv422lv_obj_move_foregroundP8lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_move_foreground()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="../API/lv_api_map.html#_CPPv422lv_obj_move_backgroundP8lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_move_background()</span></code></a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../API/display/index.html">display</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../API/display/lv_display.html">lv_display.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv412lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv421lv_display_flush_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_display_flush_cb_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv421lv_display_rotation_t"><code class="docutils literal notranslate"><span class="pre">lv_display_rotation_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv424lv_display_render_mode_t"><code class="docutils literal notranslate"><span class="pre">lv_display_render_mode_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv421lv_screen_load_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_screen_load_anim_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv417lv_display_create10lv_coord_t10lv_coord_t"><code class="docutils literal notranslate"><span class="pre">lv_display_create()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv417lv_display_removeP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_remove()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv422lv_display_set_defaultP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_set_default()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv422lv_display_get_defaultv"><code class="docutils literal notranslate"><span class="pre">lv_display_get_default()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv419lv_display_get_nextP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_next()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv425lv_display_set_resolutionP12lv_display_t10lv_coord_t10lv_coord_t"><code class="docutils literal notranslate"><span class="pre">lv_display_set_resolution()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv434lv_display_set_physical_resolutionP12lv_display_t10lv_coord_t10lv_coord_t"><code class="docutils literal notranslate"><span class="pre">lv_display_set_physical_resolution()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv421lv_display_set_offsetP12lv_display_t10lv_coord_t10lv_coord_t"><code class="docutils literal notranslate"><span class="pre">lv_display_set_offset()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv423lv_display_set_rotationP12lv_display_t21lv_display_rotation_tb"><code class="docutils literal notranslate"><span class="pre">lv_display_set_rotation()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv418lv_display_set_dpiP12lv_display_t10lv_coord_t"><code class="docutils literal notranslate"><span class="pre">lv_display_set_dpi()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv436lv_display_get_horizontal_resolutionPK12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_horizontal_resolution()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv434lv_display_get_vertical_resolutionPK12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_vertical_resolution()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv445lv_display_get_physical_horizontal_resolutionPK12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_physical_horizontal_resolution()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv443lv_display_get_physical_vertical_resolutionPK12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_physical_vertical_resolution()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv423lv_display_get_offset_xPK12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_offset_x()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv423lv_display_get_offset_yPK12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_offset_y()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv423lv_display_get_rotationP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_rotation()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv418lv_display_get_dpiPK12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_dpi()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv427lv_display_set_draw_buffersP12lv_display_tPvPv8uint32_t24lv_display_render_mode_t"><code class="docutils literal notranslate"><span class="pre">lv_display_set_draw_buffers()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv423lv_display_set_flush_cbP12lv_display_t21lv_display_flush_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_display_set_flush_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv427lv_display_set_color_formatP12lv_display_t17lv_color_format_t"><code class="docutils literal notranslate"><span class="pre">lv_display_set_color_format()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv427lv_display_get_color_formatP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_color_format()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv427lv_display_set_antialiasingP12lv_display_tb"><code class="docutils literal notranslate"><span class="pre">lv_display_set_antialiasing()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv427lv_display_get_antialiasingP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_antialiasing()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv429lv_display_is_double_bufferedP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_is_double_buffered()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv425lv_display_get_screen_actP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_screen_act()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv426lv_display_get_screen_prevP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_screen_prev()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv419lv_display_load_scrP9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_display_load_scr()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv424lv_display_get_layer_topP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_layer_top()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv424lv_display_get_layer_sysP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_layer_sys()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv427lv_display_get_layer_bottomP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_layer_bottom()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv419lv_screen_load_animP9_lv_obj_t21lv_screen_load_anim_t8uint32_t8uint32_tb"><code class="docutils literal notranslate"><span class="pre">lv_screen_load_anim()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv416lv_screen_activev"><code class="docutils literal notranslate"><span class="pre">lv_screen_active()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv412lv_layer_topv"><code class="docutils literal notranslate"><span class="pre">lv_layer_top()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv412lv_layer_sysv"><code class="docutils literal notranslate"><span class="pre">lv_layer_sys()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv415lv_layer_bottomv"><code class="docutils literal notranslate"><span class="pre">lv_layer_bottom()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv414lv_screen_loadP9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_screen_load()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv420lv_display_add_eventP12lv_display_t13lv_event_cb_t15lv_event_code_tPv"><code class="docutils literal notranslate"><span class="pre">lv_display_add_event()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv426lv_display_get_event_countP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_event_count()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv424lv_display_get_event_dscP12lv_display_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_event_dsc()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv423lv_display_remove_eventP12lv_display_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_display_remove_event()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv421lv_display_send_eventP12lv_display_t15lv_event_code_tPv"><code class="docutils literal notranslate"><span class="pre">lv_display_send_event()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv420lv_display_set_themeP12lv_display_tP11_lv_theme_t"><code class="docutils literal notranslate"><span class="pre">lv_display_set_theme()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv420lv_display_get_themeP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_theme()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv428lv_display_get_inactive_timePK12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_inactive_time()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv424lv_display_trig_activityP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_trig_activity()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv430lv_display_enable_invalidationP12lv_display_tb"><code class="docutils literal notranslate"><span class="pre">lv_display_enable_invalidation()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv434lv_display_is_invalidation_enabledP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_is_invalidation_enabled()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv426_lv_display_get_refr_timerP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">_lv_display_get_refr_timer()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv424lv_display_set_user_dataP12lv_display_tPv"><code class="docutils literal notranslate"><span class="pre">lv_display_set_user_data()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv426lv_display_set_driver_dataP12lv_display_tPv"><code class="docutils literal notranslate"><span class="pre">lv_display_set_driver_data()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv424lv_display_get_user_dataP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_user_data()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv426lv_display_get_driver_dataP12lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_display_get_driver_data()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv46lv_dpx10lv_coord_t"><code class="docutils literal notranslate"><span class="pre">lv_dpx()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/display/lv_display.html#_CPPv414lv_display_dpxPK12lv_display_t10lv_coord_t"><code class="docutils literal notranslate"><span class="pre">lv_display_dpx()</span></code></a></li>
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</li>
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</li>
<li class="toctree-l2"><a class="reference internal" href="../API/osal/index.html">osal</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../API/osal/lv_os.html">lv_os.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_os.html#_CPPv416lv_thread_prio_t"><code class="docutils literal notranslate"><span class="pre">lv_thread_prio_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_os.html#_CPPv414lv_thread_initP11lv_thread_t16lv_thread_prio_tPFvPvE6size_tPv"><code class="docutils literal notranslate"><span class="pre">lv_thread_init()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_os.html#_CPPv416lv_thread_deleteP11lv_thread_t"><code class="docutils literal notranslate"><span class="pre">lv_thread_delete()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_os.html#_CPPv413lv_mutex_initP10lv_mutex_t"><code class="docutils literal notranslate"><span class="pre">lv_mutex_init()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_os.html#_CPPv413lv_mutex_lockP10lv_mutex_t"><code class="docutils literal notranslate"><span class="pre">lv_mutex_lock()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_os.html#_CPPv417lv_mutex_lock_isrP10lv_mutex_t"><code class="docutils literal notranslate"><span class="pre">lv_mutex_lock_isr()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_os.html#_CPPv415lv_mutex_unlockP10lv_mutex_t"><code class="docutils literal notranslate"><span class="pre">lv_mutex_unlock()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_os.html#_CPPv415lv_mutex_deleteP10lv_mutex_t"><code class="docutils literal notranslate"><span class="pre">lv_mutex_delete()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_os.html#_CPPv419lv_thread_sync_initP16lv_thread_sync_t"><code class="docutils literal notranslate"><span class="pre">lv_thread_sync_init()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_os.html#_CPPv419lv_thread_sync_waitP16lv_thread_sync_t"><code class="docutils literal notranslate"><span class="pre">lv_thread_sync_wait()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_os.html#_CPPv421lv_thread_sync_signalP16lv_thread_sync_t"><code class="docutils literal notranslate"><span class="pre">lv_thread_sync_signal()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_os.html#_CPPv421lv_thread_sync_deleteP16lv_thread_sync_t"><code class="docutils literal notranslate"><span class="pre">lv_thread_sync_delete()</span></code></a></li>
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</li>
<li class="toctree-l3"><a class="reference internal" href="../API/osal/lv_freertos.html">lv_freertos.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_freertos.html#_CPPv411lv_thread_t"><code class="docutils literal notranslate"><span class="pre">lv_thread_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_freertos.html#_CPPv410lv_mutex_t"><code class="docutils literal notranslate"><span class="pre">lv_mutex_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_freertos.html#_CPPv416lv_thread_sync_t"><code class="docutils literal notranslate"><span class="pre">lv_thread_sync_t</span></code></a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/osal/lv_pthread.html">lv_pthread.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_pthread.html#_CPPv410lv_mutex_t"><code class="docutils literal notranslate"><span class="pre">lv_mutex_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_pthread.html#_CPPv411lv_thread_t"><code class="docutils literal notranslate"><span class="pre">lv_thread_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_pthread.html#_CPPv416lv_thread_sync_t"><code class="docutils literal notranslate"><span class="pre">lv_thread_sync_t</span></code></a></li>
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<li class="toctree-l3"><a class="reference internal" href="../API/osal/lv_os_none.html">lv_os_none.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_os_none.html#_CPPv410lv_mutex_t"><code class="docutils literal notranslate"><span class="pre">lv_mutex_t</span></code></a></li>
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<li class="toctree-l3"><a class="reference internal" href="../API/osal/lv_cmsis_rtos2.html">lv_cmsis_rtos2.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/osal/lv_cmsis_rtos2.html#_CPPv411lv_thread_t"><code class="docutils literal notranslate"><span class="pre">lv_thread_t</span></code></a></li>
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<li class="toctree-l2"><a class="reference internal" href="../API/indev/index.html">indev</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../API/indev/lv_indev.html">lv_indev.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv410lv_indev_t"><code class="docutils literal notranslate"><span class="pre">lv_indev_t</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv422lv_indev_read_timer_cbP10lv_timer_t"><code class="docutils literal notranslate"><span class="pre">lv_indev_read_timer_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv415lv_indev_enableP10lv_indev_tb"><code class="docutils literal notranslate"><span class="pre">lv_indev_enable()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv416lv_indev_get_actv"><code class="docutils literal notranslate"><span class="pre">lv_indev_get_act()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv417lv_indev_set_typeP10lv_indev_t15lv_indev_type_t"><code class="docutils literal notranslate"><span class="pre">lv_indev_set_type()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv420lv_indev_set_read_cbP10lv_indev_t18lv_indev_read_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_indev_set_read_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv422lv_indev_set_user_dataP10lv_indev_tPv"><code class="docutils literal notranslate"><span class="pre">lv_indev_set_user_data()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv424lv_indev_set_driver_dataP10lv_indev_tPv"><code class="docutils literal notranslate"><span class="pre">lv_indev_set_driver_data()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv417lv_indev_get_typePK10lv_indev_t"><code class="docutils literal notranslate"><span class="pre">lv_indev_get_type()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv418lv_indev_get_statePK10lv_indev_t"><code class="docutils literal notranslate"><span class="pre">lv_indev_get_state()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv418lv_indev_get_groupPK10lv_indev_t"><code class="docutils literal notranslate"><span class="pre">lv_indev_get_group()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv417lv_indev_get_dispPK10lv_indev_t"><code class="docutils literal notranslate"><span class="pre">lv_indev_get_disp()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv417lv_indev_set_dispP10lv_indev_tP13_lv_display_t"><code class="docutils literal notranslate"><span class="pre">lv_indev_set_disp()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv422lv_indev_get_user_dataPK10lv_indev_t"><code class="docutils literal notranslate"><span class="pre">lv_indev_get_user_data()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv424lv_indev_get_driver_dataPK10lv_indev_t"><code class="docutils literal notranslate"><span class="pre">lv_indev_get_driver_data()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv414lv_indev_resetP10lv_indev_tP9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_indev_reset()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/indev/lv_indev.html#_CPPv425lv_indev_reset_long_pressP10lv_indev_t"><code class="docutils literal notranslate"><span class="pre">lv_indev_reset_long_press()</span></code></a></li>
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<li class="toctree-l2"><a class="reference internal" href="../API/layouts/index.html">layouts</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../API/misc/index.html">misc</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../API/misc/lv_types.html">lv_types.h</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../API/misc/lv_area.html">lv_area.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_area.html#_CPPv410lv_coord_t"><code class="docutils literal notranslate"><span class="pre">lv_coord_t</span></code></a></li>
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<li class="toctree-l3"><a class="reference internal" href="../API/misc/lv_cache_builtin.html">lv_cache_builtin.h</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../API/misc/lv_ll.html">lv_ll.h</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv419lv_anim_set_path_cbP9lv_anim_t17lv_anim_path_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_set_path_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv420lv_anim_set_start_cbP9lv_anim_t18lv_anim_start_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_set_start_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv424lv_anim_set_get_value_cbP9lv_anim_t22lv_anim_get_value_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_set_get_value_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv420lv_anim_set_ready_cbP9lv_anim_t18lv_anim_ready_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_set_ready_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv422lv_anim_set_deleted_cbP9lv_anim_t20lv_anim_deleted_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_set_deleted_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv425lv_anim_set_playback_timeP9lv_anim_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_set_playback_time()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv426lv_anim_set_playback_delayP9lv_anim_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_set_playback_delay()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv424lv_anim_set_repeat_countP9lv_anim_t8uint16_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_set_repeat_count()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv423lv_anim_set_early_applyP9lv_anim_tb"><code class="docutils literal notranslate"><span class="pre">lv_anim_set_early_apply()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv425lv_anim_set_bezier3_paramP9lv_anim_t7int16_t7int16_t7int16_t7int16_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_set_bezier3_param()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv420lv_anim_get_playtimeP9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_get_playtime()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv416lv_anim_get_timeP9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_get_time()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv424lv_anim_get_repeat_countP9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_get_repeat_count()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv421lv_anim_get_user_dataP9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_get_user_data()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv414lv_anim_deletePv18lv_anim_exec_xcb_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_delete()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv418lv_anim_delete_allv"><code class="docutils literal notranslate"><span class="pre">lv_anim_delete_all()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv411lv_anim_getPv18lv_anim_exec_xcb_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_get()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv417lv_anim_get_timerv"><code class="docutils literal notranslate"><span class="pre">lv_anim_get_timer()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv421lv_anim_custom_deleteP9lv_anim_t24lv_anim_custom_exec_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_custom_delete()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv418lv_anim_custom_getP9lv_anim_t24lv_anim_custom_exec_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_custom_get()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv421lv_anim_count_runningv"><code class="docutils literal notranslate"><span class="pre">lv_anim_count_running()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv421lv_anim_speed_to_time8uint32_t7int32_t7int32_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_speed_to_time()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv416lv_anim_refr_nowv"><code class="docutils literal notranslate"><span class="pre">lv_anim_refr_now()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv419lv_anim_path_linearPK9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_path_linear()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv420lv_anim_path_ease_inPK9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_path_ease_in()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv421lv_anim_path_ease_outPK9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_path_ease_out()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv424lv_anim_path_ease_in_outPK9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_path_ease_in_out()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv422lv_anim_path_overshootPK9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_path_overshoot()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv419lv_anim_path_bouncePK9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_path_bounce()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv417lv_anim_path_stepPK9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_path_step()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv427lv_anim_path_custom_bezier3PK9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_path_custom_bezier3()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv415lv_anim_state_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_state_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv423_lv_anim_bezier3_para_t"><code class="docutils literal notranslate"><span class="pre">_lv_anim_bezier3_para_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim.html#_CPPv410_lv_anim_t"><code class="docutils literal notranslate"><span class="pre">_lv_anim_t</span></code></a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/misc/lv_anim_timeline.html">lv_anim_timeline.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim_timeline.html#_CPPv423lv_anim_timeline_createv"><code class="docutils literal notranslate"><span class="pre">lv_anim_timeline_create()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim_timeline.html#_CPPv423lv_anim_timeline_deleteP18lv_anim_timeline_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_timeline_delete()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim_timeline.html#_CPPv420lv_anim_timeline_addP18lv_anim_timeline_t8uint32_tP9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_timeline_add()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim_timeline.html#_CPPv422lv_anim_timeline_startP18lv_anim_timeline_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_timeline_start()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim_timeline.html#_CPPv421lv_anim_timeline_stopP18lv_anim_timeline_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_timeline_stop()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim_timeline.html#_CPPv428lv_anim_timeline_set_reverseP18lv_anim_timeline_tb"><code class="docutils literal notranslate"><span class="pre">lv_anim_timeline_set_reverse()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim_timeline.html#_CPPv429lv_anim_timeline_set_progressP18lv_anim_timeline_t8uint16_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_timeline_set_progress()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim_timeline.html#_CPPv429lv_anim_timeline_get_playtimeP18lv_anim_timeline_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_timeline_get_playtime()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim_timeline.html#_CPPv428lv_anim_timeline_get_reverseP18lv_anim_timeline_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_timeline_get_reverse()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim_timeline.html#_CPPv422lv_anim_timeline_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_timeline_dsc_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_anim_timeline.html#_CPPv418lv_anim_timeline_t"><code class="docutils literal notranslate"><span class="pre">lv_anim_timeline_t</span></code></a></li>
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</li>
<li class="toctree-l3"><a class="reference internal" href="../API/misc/lv_lru.html">lv_lru.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_lru.html#_CPPv416lv_lru_free_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_lru_free_cb_t</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_lru.html#_CPPv412lv_lru_res_t"><code class="docutils literal notranslate"><span class="pre">lv_lru_res_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_lru.html#_CPPv413lv_lru_create6size_t6size_t16lv_lru_free_cb_t16lv_lru_free_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_lru_create()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_lru.html#_CPPv48lv_lru_t"><code class="docutils literal notranslate"><span class="pre">lv_lru_t</span></code></a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/misc/lv_assert.html">lv_assert.h</a></li>
<li class="toctree-l3"><a class="reference internal" href="../API/misc/lv_math.html">lv_math.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_math.html#_CPPv415lv_cubic_bezier7int32_t7int32_t7int32_t7int32_t7int32_t"><code class="docutils literal notranslate"><span class="pre">lv_cubic_bezier()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_math.html#_CPPv410lv_bezier37int32_t7int32_t8uint32_t7int32_t7int32_t"><code class="docutils literal notranslate"><span class="pre">lv_bezier3()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_math.html#_CPPv48lv_atan2ii"><code class="docutils literal notranslate"><span class="pre">lv_atan2()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_math.html#_CPPv46lv_map7int32_t7int32_t7int32_t7int32_t7int32_t"><code class="docutils literal notranslate"><span class="pre">lv_map()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_math.html#_CPPv47lv_rand8uint32_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_rand()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/misc/lv_math.html#_CPPv413lv_sqrt_res_t"><code class="docutils literal notranslate"><span class="pre">lv_sqrt_res_t</span></code></a></li>
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</li>
<li class="toctree-l2"><a class="reference internal" href="../API/tick/index.html">tick</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../API/tick/lv_tick.html">lv_tick.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/tick/lv_tick.html#_CPPv416lv_tick_get_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_tick_get_cb_t</span></code></a></li>
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</li>
<li class="toctree-l2"><a class="reference internal" href="../API/core/index.html">core</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../API/core/lv_obj_property.html">lv_obj_property.h</a></li>
<li class="toctree-l3"><a class="reference internal" href="../API/core/lv_obj.html">lv_obj.h</a><ul>
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</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/core/lv_group.html">lv_group.h</a><ul>
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</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/core/lv_obj_style_gen.html">lv_obj_style_gen.h</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv435lv_obj_get_style_transform_rotationPK9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_style_transform_rotation()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv425lv_obj_get_style_bg_colorPK9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_style_bg_color()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv439lv_obj_get_style_bg_grad_color_filteredPK9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_style_bg_grad_color_filtered()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv428lv_obj_get_style_bg_main_opaPK9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_style_bg_main_opa()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv428lv_obj_get_style_bg_grad_opaPK9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_style_bg_grad_opa()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv424lv_obj_get_style_bg_gradPK9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_style_bg_grad()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv429lv_obj_get_style_bg_image_srcPK9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_style_bg_image_src()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv429lv_obj_get_style_bg_image_opaPK9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_style_bg_image_opa()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv433lv_obj_get_style_bg_image_recolorPK9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_style_bg_image_recolor()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv442lv_obj_get_style_bg_image_recolor_filteredPK9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_style_bg_image_recolor_filtered()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv437lv_obj_get_style_bg_image_recolor_opaPK9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_style_bg_image_recolor_opa()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv439lv_obj_get_style_outline_color_filteredPK9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_style_outline_color_filtered()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv431lv_obj_set_style_bg_image_tiledP9_lv_obj_tb19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_bg_image_tiled()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv429lv_obj_set_style_border_widthP9_lv_obj_t10lv_coord_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_border_width()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv428lv_obj_set_style_outline_opaP9_lv_obj_t8lv_opa_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_outline_opa()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv429lv_obj_set_style_shadow_widthP9_lv_obj_t10lv_coord_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_shadow_width()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv426lv_obj_set_style_arc_widthP9_lv_obj_t10lv_coord_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_arc_width()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv428lv_obj_set_style_arc_roundedP9_lv_obj_tb19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_arc_rounded()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv424lv_obj_set_style_arc_opaP9_lv_obj_t8lv_opa_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_arc_opa()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv430lv_obj_set_style_arc_image_srcP9_lv_obj_tPKv19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_arc_image_src()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv427lv_obj_set_style_text_colorP9_lv_obj_t10lv_color_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_text_color()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv425lv_obj_set_style_text_opaP9_lv_obj_t8lv_opa_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_text_opa()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv426lv_obj_set_style_text_fontP9_lv_obj_tPK9lv_font_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_text_font()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv434lv_obj_set_style_text_letter_spaceP9_lv_obj_t10lv_coord_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_text_letter_space()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv432lv_obj_set_style_text_line_spaceP9_lv_obj_t10lv_coord_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_text_line_space()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv423lv_obj_set_style_radiusP9_lv_obj_t10lv_coord_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_radius()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv428lv_obj_set_style_clip_cornerP9_lv_obj_tb19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_clip_corner()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv420lv_obj_set_style_opaP9_lv_obj_t8lv_opa_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_opa()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv428lv_obj_set_style_opa_layeredP9_lv_obj_t8lv_opa_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_opa_layered()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv433lv_obj_set_style_color_filter_dscP9_lv_obj_tPK21lv_color_filter_dsc_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_color_filter_dsc()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv433lv_obj_set_style_color_filter_opaP9_lv_obj_t8lv_opa_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_color_filter_opa()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv421lv_obj_set_style_animP9_lv_obj_tPK9lv_anim_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_anim()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv427lv_obj_set_style_blend_modeP9_lv_obj_t15lv_blend_mode_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_blend_mode()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv423lv_obj_set_style_layoutP9_lv_obj_t8uint16_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_layout()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv425lv_obj_set_style_base_dirP9_lv_obj_t13lv_base_dir_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_base_dir()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv426lv_obj_set_style_flex_flowP9_lv_obj_t14lv_flex_flow_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_flex_flow()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv432lv_obj_set_style_flex_main_placeP9_lv_obj_t15lv_flex_align_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_flex_main_place()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv433lv_obj_set_style_flex_cross_placeP9_lv_obj_t15lv_flex_align_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_flex_cross_place()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv433lv_obj_set_style_flex_track_placeP9_lv_obj_t15lv_flex_align_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_flex_track_place()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv426lv_obj_set_style_flex_growP9_lv_obj_t7uint8_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_flex_grow()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv438lv_obj_set_style_grid_column_dsc_arrayP9_lv_obj_tPK10lv_coord_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_grid_column_dsc_array()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv434lv_obj_set_style_grid_column_alignP9_lv_obj_t15lv_grid_align_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_grid_column_align()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv435lv_obj_set_style_grid_row_dsc_arrayP9_lv_obj_tPK10lv_coord_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_grid_row_dsc_array()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv431lv_obj_set_style_grid_row_alignP9_lv_obj_t15lv_grid_align_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_grid_row_align()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv437lv_obj_set_style_grid_cell_column_posP9_lv_obj_t10lv_coord_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_grid_cell_column_pos()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv434lv_obj_set_style_grid_cell_x_alignP9_lv_obj_t15lv_grid_align_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_grid_cell_x_align()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv438lv_obj_set_style_grid_cell_column_spanP9_lv_obj_t10lv_coord_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_grid_cell_column_span()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv434lv_obj_set_style_grid_cell_row_posP9_lv_obj_t10lv_coord_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_grid_cell_row_pos()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv434lv_obj_set_style_grid_cell_y_alignP9_lv_obj_t15lv_grid_align_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_grid_cell_y_align()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_style_gen.html#_CPPv435lv_obj_set_style_grid_cell_row_spanP9_lv_obj_t10lv_coord_t19lv_style_selector_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_style_grid_cell_row_span()</span></code></a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/core/lv_obj_draw.html">lv_obj_draw.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_draw.html#_CPPv415lv_layer_type_t"><code class="docutils literal notranslate"><span class="pre">lv_layer_type_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_draw.html#_CPPv425lv_obj_init_draw_rect_dscP9_lv_obj_t8uint32_tP18lv_draw_rect_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_init_draw_rect_dsc()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_draw.html#_CPPv426lv_obj_init_draw_label_dscP9_lv_obj_t8uint32_tP19lv_draw_label_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_init_draw_label_dsc()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_draw.html#_CPPv426lv_obj_init_draw_image_dscP9_lv_obj_t8uint32_tP19lv_draw_image_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_init_draw_image_dsc()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_draw.html#_CPPv425lv_obj_init_draw_line_dscP9_lv_obj_t8uint32_tP18lv_draw_line_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_init_draw_line_dsc()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_draw.html#_CPPv424lv_obj_init_draw_arc_dscP9_lv_obj_t8uint32_tP17lv_draw_arc_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_init_draw_arc_dsc()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_draw.html#_CPPv430lv_obj_calculate_ext_draw_sizeP9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_calculate_ext_draw_size()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_draw.html#_CPPv428lv_obj_refresh_ext_draw_sizeP9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_refresh_ext_draw_size()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_draw.html#_CPPv425_lv_obj_get_ext_draw_sizePK9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">_lv_obj_get_ext_draw_size()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_draw.html#_CPPv422_lv_obj_get_layer_typePK9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">_lv_obj_get_layer_type()</span></code></a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/core/lv_obj_tree.html">lv_obj_tree.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv421lv_obj_tree_walk_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_tree_walk_cb_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv422lv_obj_tree_walk_res_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_tree_walk_res_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv413lv_obj_deleteP9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_delete()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv412lv_obj_cleanP9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_clean()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv421lv_obj_delete_delayedP9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_delete_delayed()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv427lv_obj_delete_anim_ready_cbP9lv_anim_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_delete_anim_ready_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv419lv_obj_delete_asyncP9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_delete_async()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv417lv_obj_set_parentP9_lv_obj_tP9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_set_parent()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv411lv_obj_swapP9_lv_obj_tP9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_swap()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv420lv_obj_move_to_indexP9_lv_obj_t7int32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_move_to_index()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv417lv_obj_get_screenPK9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_screen()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv415lv_obj_get_dispPK9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_disp()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv417lv_obj_get_parentPK9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_parent()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv416lv_obj_get_childPK9_lv_obj_t7int32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_child()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_tree.html#_CPPv418lv_obj_get_siblingPK9_lv_obj_t7int32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_sibling()</span></code></a></li>
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</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/core/lv_obj_event.html">lv_obj_event.h</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_event.html#_CPPv417lv_obj_event_basePK15_lv_obj_class_tP10lv_event_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_event_base()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_event.html#_CPPv431lv_event_get_current_target_objP10lv_event_t"><code class="docutils literal notranslate"><span class="pre">lv_event_get_current_target_obj()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_event.html#_CPPv423lv_event_get_target_objP10lv_event_t"><code class="docutils literal notranslate"><span class="pre">lv_event_get_target_obj()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_event.html#_CPPv416lv_obj_add_eventP9_lv_obj_t13lv_event_cb_t15lv_event_code_tPv"><code class="docutils literal notranslate"><span class="pre">lv_obj_add_event()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_event.html#_CPPv422lv_obj_get_event_countP9_lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_event_count()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_event.html#_CPPv420lv_obj_get_event_dscP9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_get_event_dsc()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/core/lv_obj_event.html#_CPPv419lv_obj_remove_eventP9_lv_obj_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_obj_remove_event()</span></code></a></li>
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<li class="toctree-l3"><a class="reference internal" href="../API/core/lv_obj_class.html">lv_obj_class.h</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../API/core/lv_global.html">lv_global.h</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../API/core/lv_obj_pos.html">lv_obj_pos.h</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../API/font/index.html">font</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../API/font/lv_font_fmt_txt.html">lv_font_fmt_txt.h</a><ul>
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</li>
<li class="toctree-l3"><a class="reference internal" href="../API/widgets/slider/index.html">slider</a><ul>
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</li>
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</li>
<li class="toctree-l3"><a class="reference internal" href="../API/widgets/tabview/index.html">tabview</a><ul>
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</li>
<li class="toctree-l3"><a class="reference internal" href="../API/widgets/label/index.html">label</a><ul>
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</li>
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</li>
<li class="toctree-l3"><a class="reference internal" href="../API/widgets/button/index.html">button</a><ul>
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</li>
<li class="toctree-l3"><a class="reference internal" href="../API/widgets/list/index.html">list</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/widgets/list/lv_list.html">lv_list.h</a></li>
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</li>
<li class="toctree-l3"><a class="reference internal" href="../API/widgets/imgbtn/index.html">imgbtn</a><ul>
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</li>
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</li>
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</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../API/draw/index.html">draw</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../API/draw/lv_image_buf.html">lv_image_buf.h</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_buf.html#_CPPv417lv_image_buf_freeP14lv_image_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_image_buf_free()</span></code></a></li>
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</li>
<li class="toctree-l3"><a class="reference internal" href="../API/draw/lv_image_decoder.html">lv_image_decoder.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv414lv_image_src_t"><code class="docutils literal notranslate"><span class="pre">lv_image_src_t</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv425lv_image_decoder_open_f_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_open_f_t</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv422lv_image_decoder_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_dsc_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv415_lv_image_src_t"><code class="docutils literal notranslate"><span class="pre">_lv_image_src_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv422_lv_image_decoder_initv"><code class="docutils literal notranslate"><span class="pre">_lv_image_decoder_init()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv425lv_image_decoder_get_infoPKvP17lv_image_header_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_get_info()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv421lv_image_decoder_openP22lv_image_decoder_dsc_tPKv10lv_color_t7int32_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_open()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv425lv_image_decoder_get_areaP22lv_image_decoder_dsc_tPK9lv_area_tP9lv_area_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_get_area()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv422lv_image_decoder_closeP22lv_image_decoder_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_close()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv423lv_image_decoder_deleteP18lv_image_decoder_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_delete()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv425lv_image_decoder_get_nextP18lv_image_decoder_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_get_next()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv428lv_image_decoder_set_info_cbP18lv_image_decoder_t25lv_image_decoder_info_f_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_set_info_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv428lv_image_decoder_set_open_cbP18lv_image_decoder_t25lv_image_decoder_open_f_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_set_open_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv432lv_image_decoder_set_get_area_cbP18lv_image_decoder_t30lv_image_decoder_get_area_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_set_get_area_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv429lv_image_decoder_set_close_cbP18lv_image_decoder_t26lv_image_decoder_close_f_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_set_close_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv430lv_image_decoder_built_in_infoP18lv_image_decoder_tPKvP17lv_image_header_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_built_in_info()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv434lv_image_decoder_built_in_get_areaP18lv_image_decoder_tP22lv_image_decoder_dsc_tPK9lv_area_tP9lv_area_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_built_in_get_area()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv430lv_image_decoder_built_in_openP18lv_image_decoder_tP22lv_image_decoder_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_built_in_open()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv431lv_image_decoder_built_in_closeP18lv_image_decoder_tP22lv_image_decoder_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_image_decoder_built_in_close()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv419_lv_image_decoder_t"><code class="docutils literal notranslate"><span class="pre">_lv_image_decoder_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_image_decoder.html#_CPPv423_lv_image_decoder_dsc_t"><code class="docutils literal notranslate"><span class="pre">_lv_image_decoder_dsc_t</span></code></a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/draw/lv_draw_label.html">lv_draw_label.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_draw_label.html#_CPPv420lv_draw_label_hint_t"><code class="docutils literal notranslate"><span class="pre">lv_draw_label_hint_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_draw_label.html#_CPPv419lv_draw_letter_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_draw_letter_cb_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_draw_label.html#_CPPv430lv_draw_letter_bitmap_format_t"><code class="docutils literal notranslate"><span class="pre">lv_draw_letter_bitmap_format_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_draw_label.html#_CPPv429lv_draw_label_iterate_lettersP14lv_draw_unit_tPK19lv_draw_label_dsc_tPK9lv_area_t19lv_draw_letter_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_draw_label_iterate_letters()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_draw_label.html#_CPPv422lv_draw_label_dsc_initP19lv_draw_label_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_draw_label_dsc_init()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_draw_label.html#_CPPv423lv_draw_letter_dsc_initP19lv_draw_glyph_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_draw_letter_dsc_init()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_draw_label.html#_CPPv413lv_draw_labelP10lv_layer_tPK19lv_draw_label_dsc_tPK9lv_area_t"><code class="docutils literal notranslate"><span class="pre">lv_draw_label()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_draw_label.html#_CPPv414lv_draw_letterP10lv_layer_tP19lv_draw_label_dsc_tPK10lv_point_t8uint32_t"><code class="docutils literal notranslate"><span class="pre">lv_draw_letter()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_draw_label.html#_CPPv421_lv_draw_label_hint_t"><code class="docutils literal notranslate"><span class="pre">_lv_draw_label_hint_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_draw_label.html#_CPPv419lv_draw_label_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_draw_label_dsc_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_draw_label.html#_CPPv419lv_draw_glyph_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_draw_glyph_dsc_t</span></code></a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/draw/lv_draw_mask.html">lv_draw_mask.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/draw/lv_draw_mask.html#_CPPv426lv_draw_mask_rect_dsc_initP23lv_draw_mask_rect_dsc_t"><code class="docutils literal notranslate"><span class="pre">lv_draw_mask_rect_dsc_init()</span></code></a></li>
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<li class="toctree-l2"><a class="reference internal" href="../API/stdlib/index.html">stdlib</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_mem.html#_CPPv413lv_mem_deinitv"><code class="docutils literal notranslate"><span class="pre">lv_mem_deinit()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_mem.html#_CPPv418lv_mem_remove_pool13lv_mem_pool_t"><code class="docutils literal notranslate"><span class="pre">lv_mem_remove_pool()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_mem.html#_CPPv49lv_malloc6size_t"><code class="docutils literal notranslate"><span class="pre">lv_malloc()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_mem.html#_CPPv47lv_freePv"><code class="docutils literal notranslate"><span class="pre">lv_free()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_mem.html#_CPPv410lv_reallocPv6size_t"><code class="docutils literal notranslate"><span class="pre">lv_realloc()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_mem.html#_CPPv414lv_malloc_core6size_t"><code class="docutils literal notranslate"><span class="pre">lv_malloc_core()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_mem.html#_CPPv412lv_free_corePv"><code class="docutils literal notranslate"><span class="pre">lv_free_core()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_mem.html#_CPPv415lv_realloc_corePv6size_t"><code class="docutils literal notranslate"><span class="pre">lv_realloc_core()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_mem.html#_CPPv419lv_mem_monitor_coreP16lv_mem_monitor_t"><code class="docutils literal notranslate"><span class="pre">lv_mem_monitor_core()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_mem.html#_CPPv416lv_mem_test_corev"><code class="docutils literal notranslate"><span class="pre">lv_mem_test_core()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_mem.html#_CPPv411lv_mem_testv"><code class="docutils literal notranslate"><span class="pre">lv_mem_test()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_mem.html#_CPPv414lv_mem_monitorP16lv_mem_monitor_t"><code class="docutils literal notranslate"><span class="pre">lv_mem_monitor()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_mem.html#_CPPv416lv_mem_monitor_t"><code class="docutils literal notranslate"><span class="pre">lv_mem_monitor_t</span></code></a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/stdlib/lv_sprintf.html">lv_sprintf.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_sprintf.html#_CPPv411lv_snprintfPc6size_tPKcz"><code class="docutils literal notranslate"><span class="pre">lv_snprintf()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/lv_sprintf.html#_CPPv412lv_vsnprintfPc6size_tPKc7va_list"><code class="docutils literal notranslate"><span class="pre">lv_vsnprintf()</span></code></a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/stdlib/builtin/index.html">builtin</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/stdlib/builtin/lv_tlsf.html">lv_tlsf.h</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../API/themes/index.html">themes</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../API/themes/lv_theme.html">lv_theme.h</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/lv_theme.html#_CPPv419lv_theme_apply_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_theme_apply_cb_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/lv_theme.html#_CPPv410lv_theme_t"><code class="docutils literal notranslate"><span class="pre">lv_theme_t</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/lv_theme.html#_CPPv421lv_theme_get_from_objP8lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_theme_get_from_obj()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/lv_theme.html#_CPPv414lv_theme_applyP8lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_theme_apply()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/lv_theme.html#_CPPv419lv_theme_set_parentP10lv_theme_tP10lv_theme_t"><code class="docutils literal notranslate"><span class="pre">lv_theme_set_parent()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/lv_theme.html#_CPPv421lv_theme_set_apply_cbP10lv_theme_t19lv_theme_apply_cb_t"><code class="docutils literal notranslate"><span class="pre">lv_theme_set_apply_cb()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/lv_theme.html#_CPPv423lv_theme_get_font_smallP8lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_theme_get_font_small()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/lv_theme.html#_CPPv424lv_theme_get_font_normalP8lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_theme_get_font_normal()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/lv_theme.html#_CPPv423lv_theme_get_font_largeP8lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_theme_get_font_large()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/lv_theme.html#_CPPv426lv_theme_get_color_primaryP8lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_theme_get_color_primary()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/lv_theme.html#_CPPv428lv_theme_get_color_secondaryP8lv_obj_t"><code class="docutils literal notranslate"><span class="pre">lv_theme_get_color_secondary()</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/lv_theme.html#_CPPv411_lv_theme_t"><code class="docutils literal notranslate"><span class="pre">_lv_theme_t</span></code></a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/themes/default/index.html">default</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/default/lv_theme_default.html">lv_theme_default.h</a></li>
</ul>
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<li class="toctree-l3"><a class="reference internal" href="../API/themes/mono/index.html">mono</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/mono/lv_theme_mono.html">lv_theme_mono.h</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../API/themes/basic/index.html">basic</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/themes/basic/lv_theme_basic.html">lv_theme_basic.h</a></li>
</ul>
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</ul>
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<li class="toctree-l2"><a class="reference internal" href="../API/dev/index.html">dev</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../API/dev/evdev/lv_evdev.html">lv_evdev.h</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../API/dev/nuttx/index.html">nuttx</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/dev/nuttx/lv_nuttx_libuv.html">lv_nuttx_libuv.h</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../API/dev/sdl/index.html">sdl</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="../API/others/snapshot/lv_snapshot.html">lv_snapshot.h</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../API/others/fragment/index.html">fragment</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../API/others/ime/index.html">ime</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="../API/others/observer/index.html">observer</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../API/others/observer/lv_observer.html">lv_observer.h</a></li>
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</ul>
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</ul>
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<li class="toctree-l1"><a class="reference internal" href="../CONTRIBUTING.html">Contributing</a><ul>
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<li class="toctree-l1"><a class="reference internal" href="../CHANGELOG.html">Changelog</a><ul>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v8-3-7-3-may-2023">v8.3.7 3 May 2023</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v8-3-6-3-april-2023">v8.3.6 3 April 2023</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v8-3-5-7-february-2023">v8.3.5 7 February 2023</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#id9">Performance</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#id10">Fixes</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v8-3-4-15-december-2022">v8.3.4 15 December 2022</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#id15">New Features</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#fixes-1">Fixes</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v8-3-3-06-october-2022">v8.3.3 06 October 2022</a></li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v8-3-2-27-september-2022">v8.3.2 27 September 2022</a><ul>
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<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v8-3-1-25-july-2022">v8.3.1 25 July 2022</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#fixes-3">Fixes</a></li>
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</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v8-3-0-6-july-2022">v8.3.0 6 July 2022</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#overview">Overview</a></li>
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</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v8-2-0-31-january-2022">v8.2.0 31 January 2022</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#overview-1">Overview</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#ci-and-tests-3">CI and tests</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v8-1-0-10-november-2021">v8.1.0 10 November 2021</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#overview-2">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#breaking-changes-1">Breaking Changes</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#architectural-1">Architectural</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-features-3">New Features</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#performance-3">Performance</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#fixes-6">Fixes</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#examples-4">Examples</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#docs-5">Docs</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#ci-and-tests-4">CI and tests</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#others-2">Others</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v8-0-2-16-07-2021">v8.0.2 (16.07.2021)</a></li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v8-0-1-14-06-2021">v8.0.1 (14.06.2021)</a></li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v8-0-0-01-06-2021">v8.0.0 (01.06.2021)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#directory-structure">Directory structure</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#widget-changes">Widget changes</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-scrolling">New scrolling</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-layouts">New layouts</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#styles">Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#events">Events</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#driver-changes">Driver changes</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#other-changes">Other changes</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-release-policy">New release policy</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#migrating-from-v7-to-v8">Migrating from v7 to v8</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-11-0-16-03-2021">v7.11.0 (16.03.2021)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-features-4">New features</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-10-1-16-02-2021">v7.10.1 (16.02.2021)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-1">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-10-0-02-02-2021">v7.10.0 (02.02.2021)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-features-5">New features</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-2">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-9-1-19-01-2021">v7.9.1 (19.01.2021)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-3">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-9-0-05-01-2021">v7.9.0 (05.01.2021)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-features-6">New features</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-4">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-8-1-15-12-2020">v7.8.1 (15.12.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-5">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-8-0-01-12-2020">v7.8.0 (01.12.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-features-7">New features</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-6">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-7-2-17-11-2020">v7.7.2 (17.11.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-7">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-7-1-03-11-2020">v7.7.1 (03.11.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-8">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-7-0-20-10-2020">v7.7.0 (20.10.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-features-8">New features</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-9">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-6-1-06-10-2020">v7.6.1 (06.10.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-10">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-6-0-22-09-2020">v7.6.0 (22.09.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-features-9">New features</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-11">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-5-0-15-09-2020">v7.5.0 (15.09.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-features-10">New features</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-12">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-4-0-01-09-2020">v7.4.0 (01.09.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-features-11">New features</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-13">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-3-1-18-08-2020">v7.3.1 (18.08.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-14">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-3-0-04-08-2020">v7.3.0 (04.08.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-features-12">New features</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-15">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-2-0-21-07-2020">v7.2.0 (21.07.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-features-13">New features</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-16">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-1-0-07-07-2020">v7.1.0 (07.07.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-features-14">New features</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-17">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-0-2-16-06-2020">v7.0.2 (16.06.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-18">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-0-1-01-06-2020">v7.0.1 (01.06.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#bugfixes-19">Bugfixes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../CHANGELOG.html#v7-0-0-18-05-2020">v7.0.0 (18.05.2020)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#documentation">Documentation</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#legal-changes">Legal changes</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-drawing-system">New drawing system</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-style-system">New style system</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#gpu-integration">GPU integration</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#renames">Renames</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#reworked-and-improved-object">Reworked and improved object</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-object-types">New object types</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#others-3">Others</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#demos">Demos</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#new-release-policy-1">New release policy</a></li>
<li class="toctree-l3"><a class="reference internal" href="../CHANGELOG.html#migrating-from-v6-to-v7">Migrating from v6 to v7</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../ROADMAP.html">Roadmap</a><ul>
<li class="toctree-l2"><a class="reference internal" href="../ROADMAP.html#planned-for-v9">Planned for v9</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../ROADMAP.html#naming-and-api">Naming and API</a></li>
<li class="toctree-l3"><a class="reference internal" href="../ROADMAP.html#architecture">Architecture</a></li>
<li class="toctree-l3"><a class="reference internal" href="../ROADMAP.html#styles">Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../ROADMAP.html#widgets">Widgets</a></li>
<li class="toctree-l3"><a class="reference internal" href="../ROADMAP.html#drawing-and-rendering">Drawing and rendering</a></li>
<li class="toctree-l3"><a class="reference internal" href="../ROADMAP.html#animations">Animations</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../ROADMAP.html#planned-in-general">Planned in general</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../ROADMAP.html#ci">CI</a></li>
<li class="toctree-l3"><a class="reference internal" href="../ROADMAP.html#id1">Architecture</a></li>
<li class="toctree-l3"><a class="reference internal" href="../ROADMAP.html#id2">Styles</a></li>
<li class="toctree-l3"><a class="reference internal" href="../ROADMAP.html#id3">Drawing and rendering</a></li>
<li class="toctree-l3"><a class="reference internal" href="../ROADMAP.html#id4">Widgets</a></li>
<li class="toctree-l3"><a class="reference internal" href="../ROADMAP.html#others">Others</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../ROADMAP.html#ideas">Ideas</a></li>
</ul>
</li>
</ul>
</div>
</div>
</nav>
<section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"><nav class="wy-nav-top" aria-label="Mobile navigation menu" >
<i data-toggle="wy-nav-top" class="fa fa-bars"></i>
<a href="../index.html">LVGL</a>
</nav>
<div class="wy-nav-content">
<div class="rst-content">
<div role="navigation" aria-label="Page navigation">
<ul class="wy-breadcrumbs">
<li><a href="../index.html" class="icon icon-home" aria-label="Home"></a></li>
<li class="breadcrumb-item"><a href="index.html">Overview</a></li>
<li class="breadcrumb-item active">Scroll</li>
<li class="wy-breadcrumbs-aside">
<a href="https://github.com/lvgl/lvgl/blob/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/docs/overview/scroll.rst" class="fa fa-github"> Edit on GitHub</a>
</li>
</ul><div class="rst-breadcrumbs-buttons" role="navigation" aria-label="Sequential page navigation">
<a href="style-props.html" class="btn btn-neutral float-left" title="Style properties" accesskey="p"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a>
<a href="layer.html" class="btn btn-neutral float-right" title="Layers" accesskey="n">Next <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a>
</div>
<hr/>
</div>
<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
<div itemprop="articleBody">
<section id="scroll">
<h1>Scroll<a class="headerlink" href="#scroll" title="Link to this heading"></a></h1>
<section id="overview">
<h2>Overview<a class="headerlink" href="#overview" title="Link to this heading"></a></h2>
<p>In LVGL scrolling works very intuitively: if an object is outside its
parent content area (the size without padding), the parent becomes
scrollable and scrollbar(s) will appear. That's it.</p>
<p>Any object can be scrollable including <code class="docutils literal notranslate"><span class="pre">lv_obj_t</span></code>, <code class="docutils literal notranslate"><span class="pre">lv_img</span></code>,
<code class="docutils literal notranslate"><span class="pre">lv_btn</span></code>, <code class="docutils literal notranslate"><span class="pre">lv_meter</span></code>, etc</p>
<p>The object can either be scrolled horizontally or vertically in one
stroke; diagonal scrolling is not possible.</p>
<section id="scrollbar">
<h3>Scrollbar<a class="headerlink" href="#scrollbar" title="Link to this heading"></a></h3>
<section id="mode">
<h4>Mode<a class="headerlink" href="#mode" title="Link to this heading"></a></h4>
<p>Scrollbars are displayed according to a configured <code class="docutils literal notranslate"><span class="pre">mode</span></code>. The
following <code class="docutils literal notranslate"><span class="pre">mode</span></code>(s) exist:</p>
<ul class="simple">
<li><p><a class="reference internal" href="../API/core/lv_obj_scroll.html#_CPPv4N20_lv_scrollbar_mode_t21LV_SCROLLBAR_MODE_OFFE" title="LV_SCROLLBAR_MODE_OFF"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_SCROLLBAR_MODE_OFF</span></code></a>: Never show the scrollbars</p></li>
<li><p><a class="reference internal" href="../API/core/lv_obj_scroll.html#_CPPv4N20_lv_scrollbar_mode_t20LV_SCROLLBAR_MODE_ONE" title="LV_SCROLLBAR_MODE_ON"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_SCROLLBAR_MODE_ON</span></code></a>: Always show the scrollbars</p></li>
<li><p><a class="reference internal" href="../API/core/lv_obj_scroll.html#_CPPv4N20_lv_scrollbar_mode_t24LV_SCROLLBAR_MODE_ACTIVEE" title="LV_SCROLLBAR_MODE_ACTIVE"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_SCROLLBAR_MODE_ACTIVE</span></code></a>: Show scroll bars while an object is being scrolled</p></li>
<li><p><a class="reference internal" href="../API/core/lv_obj_scroll.html#_CPPv4N20_lv_scrollbar_mode_t22LV_SCROLLBAR_MODE_AUTOE" title="LV_SCROLLBAR_MODE_AUTO"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_SCROLLBAR_MODE_AUTO</span></code></a>: Show scroll bars when the content is large enough to be scrolled</p></li>
</ul>
<p><code class="docutils literal notranslate"><span class="pre">lv_obj_set_scrollbar_mode(obj,</span> <span class="pre">LV_SCROLLBAR_MODE_...)</span></code> sets the scrollbar mode on an object.</p>
</section>
<section id="styling">
<h4>Styling<a class="headerlink" href="#styling" title="Link to this heading"></a></h4>
<p>The scrollbars have their own dedicated part, called
<a class="reference internal" href="../API/core/lv_obj.html#_CPPv4N10_lv_part_t17LV_PART_SCROLLBARE" title="LV_PART_SCROLLBAR"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_PART_SCROLLBAR</span></code></a>. For example a scrollbar can turn to red like
this:</p>
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="k">static</span><span class="w"> </span><span class="n">lv_style_t</span><span class="w"> </span><span class="n">style_red</span><span class="p">;</span>
<span class="n">lv_style_init</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style_red</span><span class="p">);</span>
<span class="n">lv_style_set_bg_color</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style_red</span><span class="p">,</span><span class="w"> </span><span class="n">lv_color_red</span><span class="p">());</span>
<span class="p">...</span>
<span class="n">lv_obj_add_style</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span><span class="w"> </span><span class="o">&amp;</span><span class="n">style_red</span><span class="p">,</span><span class="w"> </span><span class="n">LV_PART_SCROLLBAR</span><span class="p">);</span>
</pre></div>
</div>
<p>An object goes to the <a class="reference internal" href="../API/core/lv_obj.html#_CPPv4N11_lv_state_t17LV_STATE_SCROLLEDE" title="LV_STATE_SCROLLED"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_STATE_SCROLLED</span></code></a> state while it's being
scrolled. This allows adding different styles to the scrollbar or the
object itself when scrolled. This code makes the scrollbar blue when the
object is scrolled:</p>
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="k">static</span><span class="w"> </span><span class="n">lv_style_t</span><span class="w"> </span><span class="n">style_blue</span><span class="p">;</span>
<span class="n">lv_style_init</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style_blue</span><span class="p">);</span>
<span class="n">lv_style_set_bg_color</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style_blue</span><span class="p">,</span><span class="w"> </span><span class="n">lv_color_blue</span><span class="p">());</span>
<span class="p">...</span>
<span class="n">lv_obj_add_style</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span><span class="w"> </span><span class="o">&amp;</span><span class="n">style_blue</span><span class="p">,</span><span class="w"> </span><span class="n">LV_STATE_SCROLLED</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">LV_PART_SCROLLBAR</span><span class="p">);</span>
</pre></div>
</div>
<p>If the base direction of the <a class="reference internal" href="../API/core/lv_obj.html#_CPPv4N10_lv_part_t17LV_PART_SCROLLBARE" title="LV_PART_SCROLLBAR"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_PART_SCROLLBAR</span></code></a> is RTL
(<code class="xref c c-macro docutils literal notranslate"><span class="pre">LV_BASE_DIR_RTL</span></code>) the vertical scrollbar will be placed on the left.
Note that, the <code class="docutils literal notranslate"><span class="pre">base_dir</span></code> style property is inherited. Therefore, it
can be set directly on the <a class="reference internal" href="../API/core/lv_obj.html#_CPPv4N10_lv_part_t17LV_PART_SCROLLBARE" title="LV_PART_SCROLLBAR"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_PART_SCROLLBAR</span></code></a> part of an object or on
the object's or any parent's main part to make a scrollbar inherit the
base direction.</p>
<p><code class="docutils literal notranslate"><span class="pre">pad_left/right/top/bottom</span></code> sets the spacing around the scrollbars and
<code class="docutils literal notranslate"><span class="pre">width</span></code> sets the scrollbar's width.</p>
</section>
</section>
<section id="events">
<h3>Events<a class="headerlink" href="#events" title="Link to this heading"></a></h3>
<p>The following events are related to scrolling:</p>
<ul class="simple">
<li><p><a class="reference internal" href="../API/misc/lv_event.html#_CPPv4N15lv_event_code_t21LV_EVENT_SCROLL_BEGINE" title="LV_EVENT_SCROLL_BEGIN"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_EVENT_SCROLL_BEGIN</span></code></a>: Scrolling begins. The event parameter is
<code class="docutils literal notranslate"><span class="pre">NULL</span></code> or an <code class="docutils literal notranslate"><span class="pre">lv_anim_t</span> <span class="pre">*</span></code> with a scroll animation descriptor that can be modified if required.</p></li>
<li><p><a class="reference internal" href="../API/misc/lv_event.html#_CPPv4N15lv_event_code_t19LV_EVENT_SCROLL_ENDE" title="LV_EVENT_SCROLL_END"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_EVENT_SCROLL_END</span></code></a>: Scrolling ends.</p></li>
<li><p><a class="reference internal" href="../API/misc/lv_event.html#_CPPv4N15lv_event_code_t15LV_EVENT_SCROLLE" title="LV_EVENT_SCROLL"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_EVENT_SCROLL</span></code></a>: Scroll happened. Triggered on every position change. Scroll events</p></li>
</ul>
</section>
</section>
<section id="basic-example">
<h2>Basic example<a class="headerlink" href="#basic-example" title="Link to this heading"></a></h2>
<p>TODO</p>
</section>
<section id="features-of-scrolling">
<h2>Features of scrolling<a class="headerlink" href="#features-of-scrolling" title="Link to this heading"></a></h2>
<p>Besides, managing &quot;normal&quot; scrolling there are many interesting and
useful additional features.</p>
<section id="scrollable">
<h3>Scrollable<a class="headerlink" href="#scrollable" title="Link to this heading"></a></h3>
<p>It's possible to make an object non-scrollable with
<span class="cpp-expr sig sig-inline cpp"><a class="reference internal" href="../API/core/lv_obj.html#_CPPv418lv_obj_remove_flagP8lv_obj_t13lv_obj_flag_t" title="lv_obj_remove_flag"><span class="n">lv_obj_remove_flag</span></a><span class="p">(</span><span class="n">obj</span><span class="p">,</span><span class="w"> </span><a class="reference internal" href="../API/core/lv_obj.html#_CPPv4N14_lv_obj_flag_t22LV_OBJ_FLAG_SCROLLABLEE" title="LV_OBJ_FLAG_SCROLLABLE"><span class="n">LV_OBJ_FLAG_SCROLLABLE</span></a><span class="p">)</span></span>.</p>
<p>Non-scrollable objects can still propagate the scrolling (chain) to
their parents.</p>
<p>The direction in which scrolling happens can be controlled by
<code class="docutils literal notranslate"><span class="pre">lv_obj_set_scroll_dir(obj,</span> <span class="pre">LV_DIR_...)</span></code>. The following values are
possible for the direction:
- <a class="reference internal" href="../API/misc/lv_area.html#_CPPv4N9_lv_dir_t10LV_DIR_TOPE" title="LV_DIR_TOP"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_DIR_TOP</span></code></a>: only scroll up
- <a class="reference internal" href="../API/misc/lv_area.html#_CPPv4N9_lv_dir_t11LV_DIR_LEFTE" title="LV_DIR_LEFT"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_DIR_LEFT</span></code></a>: only scroll left
- <a class="reference internal" href="../API/misc/lv_area.html#_CPPv4N9_lv_dir_t13LV_DIR_BOTTOME" title="LV_DIR_BOTTOM"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_DIR_BOTTOM</span></code></a>: only scroll down
- <a class="reference internal" href="../API/misc/lv_area.html#_CPPv4N9_lv_dir_t12LV_DIR_RIGHTE" title="LV_DIR_RIGHT"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_DIR_RIGHT</span></code></a>: only scroll right
- <a class="reference internal" href="../API/misc/lv_area.html#_CPPv4N9_lv_dir_t10LV_DIR_HORE" title="LV_DIR_HOR"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_DIR_HOR</span></code></a>: only scroll horizontally
- <a class="reference internal" href="../API/misc/lv_area.html#_CPPv4N9_lv_dir_t10LV_DIR_VERE" title="LV_DIR_VER"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_DIR_VER</span></code></a>: only scroll vertically
- <a class="reference internal" href="../API/misc/lv_area.html#_CPPv4N9_lv_dir_t10LV_DIR_ALLE" title="LV_DIR_ALL"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_DIR_ALL</span></code></a>: scroll any directions</p>
<p>OR-ed values are also possible. E.g. <span class="cpp-expr sig sig-inline cpp"><a class="reference internal" href="../API/misc/lv_area.html#_CPPv4N9_lv_dir_t10LV_DIR_TOPE" title="LV_DIR_TOP"><span class="n">LV_DIR_TOP</span></a><span class="w"> </span><span class="o">|</span><span class="w"> </span><a class="reference internal" href="../API/misc/lv_area.html#_CPPv4N9_lv_dir_t11LV_DIR_LEFTE" title="LV_DIR_LEFT"><span class="n">LV_DIR_LEFT</span></a></span>.</p>
</section>
<section id="scroll-chain">
<h3>Scroll chain<a class="headerlink" href="#scroll-chain" title="Link to this heading"></a></h3>
<p>If an object can't be scrolled further (e.g. its content has reached the
bottom-most position) additional scrolling is propagated to its parent.
If the parent can be scrolled in that direction than it will be scrolled
instead. It continues propagating to the grandparent and
grand-grandparents as well.</p>
<p>The propagation on scrolling is called &quot;scroll chaining&quot; and it can be
enabled/disabled with <code class="docutils literal notranslate"><span class="pre">LV_OBJ_FLAG_SCROLL_CHAIN_HOR/VER</span></code> flag. If
chaining is disabled the propagation stops on the object and the
parent(s) won't be scrolled.</p>
</section>
<section id="scroll-momentum">
<h3>Scroll momentum<a class="headerlink" href="#scroll-momentum" title="Link to this heading"></a></h3>
<p>When the user scrolls an object and releases it, LVGL can emulate
inertial momentum for the scrolling. It's like the object was thrown and
scrolling slows down smoothly.</p>
<p>The scroll momentum can be enabled/disabled with the
<a class="reference internal" href="../API/core/lv_obj.html#_CPPv4N14_lv_obj_flag_t27LV_OBJ_FLAG_SCROLL_MOMENTUME" title="LV_OBJ_FLAG_SCROLL_MOMENTUM"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_OBJ_FLAG_SCROLL_MOMENTUM</span></code></a> flag.</p>
</section>
<section id="elastic-scroll">
<h3>Elastic scroll<a class="headerlink" href="#elastic-scroll" title="Link to this heading"></a></h3>
<p>Normally an object can't be scrolled past the extremeties of its
content. That is the top side of the content can't be below the top side
of the object.</p>
<p>However, with <a class="reference internal" href="../API/core/lv_obj.html#_CPPv4N14_lv_obj_flag_t26LV_OBJ_FLAG_SCROLL_ELASTICE" title="LV_OBJ_FLAG_SCROLL_ELASTIC"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_OBJ_FLAG_SCROLL_ELASTIC</span></code></a> a fancy effect is added
when the user &quot;over-scrolls&quot; the content. The scrolling slows down, and
the content can be scrolled inside the object. When the object is
released the content scrolled in it will be animated back to the valid
position.</p>
</section>
<section id="snapping">
<h3>Snapping<a class="headerlink" href="#snapping" title="Link to this heading"></a></h3>
<p>The children of an object can be snapped according to specific rules
when scrolling ends. Children can be made snappable individually with
the <a class="reference internal" href="../API/core/lv_obj.html#_CPPv4N14_lv_obj_flag_t21LV_OBJ_FLAG_SNAPPABLEE" title="LV_OBJ_FLAG_SNAPPABLE"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_OBJ_FLAG_SNAPPABLE</span></code></a> flag.</p>
<p>An object can align snapped children in four ways:</p>
<ul class="simple">
<li><p><a class="reference internal" href="../API/core/lv_obj_scroll.html#_CPPv4N17_lv_scroll_snap_t19LV_SCROLL_SNAP_NONEE" title="LV_SCROLL_SNAP_NONE"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_SCROLL_SNAP_NONE</span></code></a>: Snapping is disabled. (default)</p></li>
<li><p><a class="reference internal" href="../API/core/lv_obj_scroll.html#_CPPv4N17_lv_scroll_snap_t20LV_SCROLL_SNAP_STARTE" title="LV_SCROLL_SNAP_START"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_SCROLL_SNAP_START</span></code></a>: Align the children to the left/top side of a scrolled object</p></li>
<li><p><a class="reference internal" href="../API/core/lv_obj_scroll.html#_CPPv4N17_lv_scroll_snap_t18LV_SCROLL_SNAP_ENDE" title="LV_SCROLL_SNAP_END"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_SCROLL_SNAP_END</span></code></a>: Align the children to the right/bottom side of a scrolled object</p></li>
<li><p><a class="reference internal" href="../API/core/lv_obj_scroll.html#_CPPv4N17_lv_scroll_snap_t21LV_SCROLL_SNAP_CENTERE" title="LV_SCROLL_SNAP_CENTER"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_SCROLL_SNAP_CENTER</span></code></a>: Align the children to the center of a scrolled object</p></li>
</ul>
<p>Snap alignment is set with
<code class="docutils literal notranslate"><span class="pre">lv_obj_set_scroll_snap_x/y(obj,</span> <span class="pre">LV_SCROLL_SNAP_...)</span></code>:</p>
<p>Under the hood the following happens:</p>
<ol class="arabic simple">
<li><p>User scrolls an object and releases the screen</p></li>
<li><p>LVGL calculates where the scroll would end considering scroll momentum</p></li>
<li><p>LVGL finds the nearest scroll point</p></li>
<li><p>LVGL scrolls to the snap point with an animation</p></li>
</ol>
</section>
<section id="scroll-one">
<h3>Scroll one<a class="headerlink" href="#scroll-one" title="Link to this heading"></a></h3>
<p>The &quot;scroll one&quot; feature tells LVGL to allow scrolling only one
snappable child at a time. This requires making the children snappable
and setting a scroll snap alignment different from
<a class="reference internal" href="../API/core/lv_obj_scroll.html#_CPPv4N17_lv_scroll_snap_t19LV_SCROLL_SNAP_NONEE" title="LV_SCROLL_SNAP_NONE"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_SCROLL_SNAP_NONE</span></code></a>.</p>
<p>This feature can be enabled by the <a class="reference internal" href="../API/core/lv_obj.html#_CPPv4N14_lv_obj_flag_t22LV_OBJ_FLAG_SCROLL_ONEE" title="LV_OBJ_FLAG_SCROLL_ONE"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_OBJ_FLAG_SCROLL_ONE</span></code></a> flag.</p>
</section>
<section id="scroll-on-focus">
<h3>Scroll on focus<a class="headerlink" href="#scroll-on-focus" title="Link to this heading"></a></h3>
<p>Imagine that there a lot of objects in a group that are on a scrollable
object. Pressing the &quot;Tab&quot; button focuses the next object but it might
be outside the visible area of the scrollable object. If the &quot;scroll on
focus&quot; feature is enabled LVGL will automatically scroll objects to
bring their children into view. The scrolling happens recursively
therefore even nested scrollable objects are handled properly. The
object will be scrolled into view even if it's on a different page of a
tabview.</p>
</section>
</section>
<section id="scroll-manually">
<h2>Scroll manually<a class="headerlink" href="#scroll-manually" title="Link to this heading"></a></h2>
<p>The following API functions allow manual scrolling of objects:</p>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">lv_obj_scroll_by(obj,</span> <span class="pre">x,</span> <span class="pre">y,</span> <span class="pre">LV_ANIM_ON/OFF)</span></code> scroll by <code class="docutils literal notranslate"><span class="pre">x</span></code> and <code class="docutils literal notranslate"><span class="pre">y</span></code> values</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">lv_obj_scroll_to(obj,</span> <span class="pre">x,</span> <span class="pre">y,</span> <span class="pre">LV_ANIM_ON/OFF)</span></code> scroll to bring the given coordinate to the top left corner</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">lv_obj_scroll_to_x(obj,</span> <span class="pre">x,</span> <span class="pre">LV_ANIM_ON/OFF)</span></code> scroll to bring the given coordinate to the left side</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">lv_obj_scroll_to_y(obj,</span> <span class="pre">y,</span> <span class="pre">LV_ANIM_ON/OFF)</span></code> scroll to bring the given coordinate to the top side</p></li>
</ul>
<p>From time to time you may need to retrieve the scroll position of an
element, either to restore it later, or to display dynamically some
elements according to the current scroll. Here is an example to see how
to combine scroll event and store the scroll top position.</p>
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="k">static</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">scroll_value</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
<span class="k">static</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">store_scroll_value_event_cb</span><span class="p">(</span><span class="n">lv_event_t</span><span class="o">*</span><span class="w"> </span><span class="n">e</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="o">*</span><span class="w"> </span><span class="n">screen</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_event_get_target</span><span class="p">(</span><span class="n">e</span><span class="p">);</span>
<span class="w"> </span><span class="n">scroll_value</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_obj_get_scroll_top</span><span class="p">(</span><span class="n">screen</span><span class="p">);</span>
<span class="w"> </span><span class="n">printf</span><span class="p">(</span><span class="s">&quot;%d pixels are scrolled out on the top</span><span class="se">\n</span><span class="s">&quot;</span><span class="p">,</span><span class="w"> </span><span class="n">scroll_value</span><span class="p">);</span>
<span class="p">}</span>
<span class="n">lv_obj_t</span><span class="o">*</span><span class="w"> </span><span class="n">container</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_obj_create</span><span class="p">(</span><span class="nb">NULL</span><span class="p">);</span>
<span class="n">lv_obj_add_event</span><span class="p">(</span><span class="n">container</span><span class="p">,</span><span class="w"> </span><span class="n">store_scroll_value_event_cb</span><span class="p">,</span><span class="w"> </span><span class="n">LV_EVENT_SCROLL</span><span class="p">,</span><span class="w"> </span><span class="nb">NULL</span><span class="p">);</span>
</pre></div>
</div>
<p>Scroll coordinates can be retrieved from different axes with these
functions:</p>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">lv_obj_get_scroll_x(obj)</span></code> Get the <code class="docutils literal notranslate"><span class="pre">x</span></code> coordinate of object</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">lv_obj_get_scroll_y(obj)</span></code> Get the <code class="docutils literal notranslate"><span class="pre">y</span></code> coordinate of object</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">lv_obj_get_scroll_top(obj)</span></code> Get the scroll coordinate from the top</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">lv_obj_get_scroll_bottom(obj)</span></code> Get the scroll coordinate from the bottom</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">lv_obj_get_scroll_left(obj)</span></code> Get the scroll coordinate from the left</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">lv_obj_get_scroll_right(obj)</span></code> Get the scroll coordinate from the right</p></li>
</ul>
</section>
<section id="self-size">
<h2>Self size<a class="headerlink" href="#self-size" title="Link to this heading"></a></h2>
<p>Self size is a property of an object. Normally, the user shouldn't use
this parameter but if a custom widget is created it might be useful.</p>
<p>In short, self size establishes the size of an object's content. To
understand it better take the example of a table. Let's say it has 10
rows each with 50 px height. So the total height of the content is 500
px. In other words the &quot;self height&quot; is 500 px. If the user sets only
200 px height for the table LVGL will see that the self size is larger
and make the table scrollable.</p>
<p>This means not only the children can make an object scrollable but a
larger self size will too.</p>
<p>LVGL uses the <a class="reference internal" href="../API/misc/lv_event.html#_CPPv4N15lv_event_code_t22LV_EVENT_GET_SELF_SIZEE" title="LV_EVENT_GET_SELF_SIZE"><code class="xref cpp cpp-enumerator docutils literal notranslate"><span class="pre">LV_EVENT_GET_SELF_SIZE</span></code></a> event to get the self size of
an object. Here is an example to see how to handle the event:</p>
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="k">if</span><span class="p">(</span><span class="n">event_code</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">LV_EVENT_GET_SELF_SIZE</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">lv_point_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">p</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_event_get_param</span><span class="p">(</span><span class="n">e</span><span class="p">);</span>
<span class="w"> </span><span class="c1">//If x or y &lt; 0 then it doesn&#39;t need to be calculated now</span>
<span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">p</span><span class="o">-&gt;</span><span class="n">x</span><span class="w"> </span><span class="o">&gt;=</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">p</span><span class="o">-&gt;</span><span class="n">x</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">200</span><span class="p">;</span><span class="w"> </span><span class="c1">//Set or calculate the self width</span>
<span class="w"> </span><span class="p">}</span>
<span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">p</span><span class="o">-&gt;</span><span class="n">y</span><span class="w"> </span><span class="o">&gt;=</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">p</span><span class="o">-&gt;</span><span class="n">y</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">50</span><span class="p">;</span><span class="w"> </span><span class="c1">//Set or calculate the self height</span>
<span class="w"> </span><span class="p">}</span>
<span class="p">}</span>
</pre></div>
</div>
</section>
<section id="examples">
<h2>Examples<a class="headerlink" href="#examples" title="Link to this heading"></a></h2>
<section id="nested-scrolling">
<h3>Nested scrolling<a class="headerlink" href="#nested-scrolling" title="Link to this heading"></a></h3>
<div class='lv-example-container'><div class='lv-example' data-real-src='/9.0/_static/built_lv_examples/index.html?example=lv_example_scroll_1&w=320&h=240'></div><div class='lv-example-description'></div></div><div class="toggle docutils container">
<div class="header docutils container">
<p>C code &nbsp;</p><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://github.com/lvgl/lvgl/blob/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_1.c'><i class="fa fa-github"></i>&nbsp;View on GitHub</a></div>
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="cp">#include</span><span class="w"> </span><span class="cpf">&quot;../lv_examples.h&quot;</span>
<span class="cp">#if LV_BUILD_EXAMPLES</span>
<span class="cm">/**</span>
<span class="cm"> * Demonstrate how scrolling appears automatically</span>
<span class="cm"> */</span>
<span class="kt">void</span><span class="w"> </span><span class="nf">lv_example_scroll_1</span><span class="p">(</span><span class="kt">void</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="cm">/*Create an object with the new style*/</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">panel</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_obj_create</span><span class="p">(</span><span class="n">lv_screen_active</span><span class="p">());</span>
<span class="w"> </span><span class="n">lv_obj_set_size</span><span class="p">(</span><span class="n">panel</span><span class="p">,</span><span class="w"> </span><span class="mi">200</span><span class="p">,</span><span class="w"> </span><span class="mi">200</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_center</span><span class="p">(</span><span class="n">panel</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">child</span><span class="p">;</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">label</span><span class="p">;</span>
<span class="w"> </span><span class="n">child</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_obj_create</span><span class="p">(</span><span class="n">panel</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_pos</span><span class="p">(</span><span class="n">child</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_size</span><span class="p">(</span><span class="n">child</span><span class="p">,</span><span class="w"> </span><span class="mi">70</span><span class="p">,</span><span class="w"> </span><span class="mi">70</span><span class="p">);</span>
<span class="w"> </span><span class="n">label</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_label_create</span><span class="p">(</span><span class="n">child</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_label_set_text</span><span class="p">(</span><span class="n">label</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;Zero&quot;</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_center</span><span class="p">(</span><span class="n">label</span><span class="p">);</span>
<span class="w"> </span><span class="n">child</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_obj_create</span><span class="p">(</span><span class="n">panel</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_pos</span><span class="p">(</span><span class="n">child</span><span class="p">,</span><span class="w"> </span><span class="mi">160</span><span class="p">,</span><span class="w"> </span><span class="mi">80</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_size</span><span class="p">(</span><span class="n">child</span><span class="p">,</span><span class="w"> </span><span class="mi">80</span><span class="p">,</span><span class="w"> </span><span class="mi">80</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">child2</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_button_create</span><span class="p">(</span><span class="n">child</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_size</span><span class="p">(</span><span class="n">child2</span><span class="p">,</span><span class="w"> </span><span class="mi">100</span><span class="p">,</span><span class="w"> </span><span class="mi">50</span><span class="p">);</span>
<span class="w"> </span><span class="n">label</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_label_create</span><span class="p">(</span><span class="n">child2</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_label_set_text</span><span class="p">(</span><span class="n">label</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;Right&quot;</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_center</span><span class="p">(</span><span class="n">label</span><span class="p">);</span>
<span class="w"> </span><span class="n">child</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_obj_create</span><span class="p">(</span><span class="n">panel</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_pos</span><span class="p">(</span><span class="n">child</span><span class="p">,</span><span class="w"> </span><span class="mi">40</span><span class="p">,</span><span class="w"> </span><span class="mi">160</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_size</span><span class="p">(</span><span class="n">child</span><span class="p">,</span><span class="w"> </span><span class="mi">100</span><span class="p">,</span><span class="w"> </span><span class="mi">70</span><span class="p">);</span>
<span class="w"> </span><span class="n">label</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_label_create</span><span class="p">(</span><span class="n">child</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_label_set_text</span><span class="p">(</span><span class="n">label</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;Bottom&quot;</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_center</span><span class="p">(</span><span class="n">label</span><span class="p">);</span>
<span class="p">}</span>
<span class="cp">#endif</span>
</pre></div>
</div>
</div>
<div class="toggle docutils container">
<div class="header docutils container">
<p>MicroPython code &nbsp;</p><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://github.com/lvgl/lvgl/blob/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_1.py'><i class="fa fa-github"></i>&nbsp;View on GitHub</a><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://sim.lvgl.io/v9.0/micropython/ports/javascript/index.html?script_startup=https://raw.githubusercontent.com/lvgl/lvgl/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/header.py&script=https://raw.githubusercontent.com/lvgl/lvgl/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_1.py'><i class="fa fa-play"></i>&nbsp;MicroPython Simulator</a></div>
<div class="highlight-py notranslate"><div class="highlight"><pre><span></span><span class="c1">#</span>
<span class="c1"># Demonstrate how scrolling appears automatically</span>
<span class="c1">#</span>
<span class="c1"># Create an object with the new style</span>
<span class="n">panel</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">obj</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">screen_active</span><span class="p">())</span>
<span class="n">panel</span><span class="o">.</span><span class="n">set_size</span><span class="p">(</span><span class="mi">200</span><span class="p">,</span> <span class="mi">200</span><span class="p">)</span>
<span class="n">panel</span><span class="o">.</span><span class="n">center</span><span class="p">()</span>
<span class="n">child</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">obj</span><span class="p">(</span><span class="n">panel</span><span class="p">)</span>
<span class="n">child</span><span class="o">.</span><span class="n">set_pos</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">);</span>
<span class="n">child</span><span class="o">.</span><span class="n">set_size</span><span class="p">(</span><span class="mi">70</span><span class="p">,</span> <span class="mi">70</span><span class="p">)</span>
<span class="n">label</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">label</span><span class="p">(</span><span class="n">child</span><span class="p">)</span>
<span class="n">label</span><span class="o">.</span><span class="n">set_text</span><span class="p">(</span><span class="s2">&quot;Zero&quot;</span><span class="p">)</span>
<span class="n">label</span><span class="o">.</span><span class="n">center</span><span class="p">()</span>
<span class="n">child</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">obj</span><span class="p">(</span><span class="n">panel</span><span class="p">)</span>
<span class="n">child</span><span class="o">.</span><span class="n">set_pos</span><span class="p">(</span><span class="mi">160</span><span class="p">,</span> <span class="mi">80</span><span class="p">)</span>
<span class="n">child</span><span class="o">.</span><span class="n">set_size</span><span class="p">(</span><span class="mi">80</span><span class="p">,</span> <span class="mi">80</span><span class="p">)</span>
<span class="n">child2</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">button</span><span class="p">(</span><span class="n">child</span><span class="p">)</span>
<span class="n">child2</span><span class="o">.</span><span class="n">set_size</span><span class="p">(</span><span class="mi">100</span><span class="p">,</span> <span class="mi">50</span><span class="p">)</span>
<span class="n">label</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">label</span><span class="p">(</span><span class="n">child2</span><span class="p">)</span>
<span class="n">label</span><span class="o">.</span><span class="n">set_text</span><span class="p">(</span><span class="s2">&quot;Right&quot;</span><span class="p">)</span>
<span class="n">label</span><span class="o">.</span><span class="n">center</span><span class="p">()</span>
<span class="n">child</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">obj</span><span class="p">(</span><span class="n">panel</span><span class="p">)</span>
<span class="n">child</span><span class="o">.</span><span class="n">set_pos</span><span class="p">(</span><span class="mi">40</span><span class="p">,</span> <span class="mi">160</span><span class="p">)</span>
<span class="n">child</span><span class="o">.</span><span class="n">set_size</span><span class="p">(</span><span class="mi">100</span><span class="p">,</span> <span class="mi">70</span><span class="p">)</span>
<span class="n">label</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">label</span><span class="p">(</span><span class="n">child</span><span class="p">)</span>
<span class="n">label</span><span class="o">.</span><span class="n">set_text</span><span class="p">(</span><span class="s2">&quot;Bottom&quot;</span><span class="p">)</span>
<span class="n">label</span><span class="o">.</span><span class="n">center</span><span class="p">()</span>
</pre></div>
</div>
</div>
<hr/></section>
<section id="id1">
<h3>Snapping<a class="headerlink" href="#id1" title="Link to this heading"></a></h3>
<div class='lv-example-container'><div class='lv-example' data-real-src='/9.0/_static/built_lv_examples/index.html?example=lv_example_scroll_2&w=320&h=240'></div><div class='lv-example-description'></div></div><div class="toggle docutils container">
<div class="header docutils container">
<p>C code &nbsp;</p><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://github.com/lvgl/lvgl/blob/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_2.c'><i class="fa fa-github"></i>&nbsp;View on GitHub</a></div>
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="cp">#include</span><span class="w"> </span><span class="cpf">&quot;../lv_examples.h&quot;</span>
<span class="cp">#if LV_BUILD_EXAMPLES &amp;&amp; LV_USE_FLEX</span>
<span class="k">static</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">sw_event_cb</span><span class="p">(</span><span class="n">lv_event_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">e</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">lv_event_code_t</span><span class="w"> </span><span class="n">code</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_event_get_code</span><span class="p">(</span><span class="n">e</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">sw</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_event_get_target</span><span class="p">(</span><span class="n">e</span><span class="p">);</span>
<span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">code</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">LV_EVENT_VALUE_CHANGED</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">list</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_event_get_user_data</span><span class="p">(</span><span class="n">e</span><span class="p">);</span>
<span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">lv_obj_has_state</span><span class="p">(</span><span class="n">sw</span><span class="p">,</span><span class="w"> </span><span class="n">LV_STATE_CHECKED</span><span class="p">))</span><span class="w"> </span><span class="n">lv_obj_add_flag</span><span class="p">(</span><span class="n">list</span><span class="p">,</span><span class="w"> </span><span class="n">LV_OBJ_FLAG_SCROLL_ONE</span><span class="p">);</span>
<span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="n">lv_obj_remove_flag</span><span class="p">(</span><span class="n">list</span><span class="p">,</span><span class="w"> </span><span class="n">LV_OBJ_FLAG_SCROLL_ONE</span><span class="p">);</span>
<span class="w"> </span><span class="p">}</span>
<span class="p">}</span>
<span class="cm">/**</span>
<span class="cm"> * Show an example to scroll snap</span>
<span class="cm"> */</span>
<span class="kt">void</span><span class="w"> </span><span class="nf">lv_example_scroll_2</span><span class="p">(</span><span class="kt">void</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">panel</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_obj_create</span><span class="p">(</span><span class="n">lv_screen_active</span><span class="p">());</span>
<span class="w"> </span><span class="n">lv_obj_set_size</span><span class="p">(</span><span class="n">panel</span><span class="p">,</span><span class="w"> </span><span class="mi">280</span><span class="p">,</span><span class="w"> </span><span class="mi">120</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_scroll_snap_x</span><span class="p">(</span><span class="n">panel</span><span class="p">,</span><span class="w"> </span><span class="n">LV_SCROLL_SNAP_CENTER</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_flex_flow</span><span class="p">(</span><span class="n">panel</span><span class="p">,</span><span class="w"> </span><span class="n">LV_FLEX_FLOW_ROW</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_align</span><span class="p">(</span><span class="n">panel</span><span class="p">,</span><span class="w"> </span><span class="n">LV_ALIGN_CENTER</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="mi">20</span><span class="p">);</span>
<span class="w"> </span><span class="kt">uint32_t</span><span class="w"> </span><span class="n">i</span><span class="p">;</span>
<span class="w"> </span><span class="k">for</span><span class="p">(</span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o">&lt;</span><span class="w"> </span><span class="mi">10</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">btn</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_button_create</span><span class="p">(</span><span class="n">panel</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_size</span><span class="p">(</span><span class="n">btn</span><span class="p">,</span><span class="w"> </span><span class="mi">150</span><span class="p">,</span><span class="w"> </span><span class="n">lv_pct</span><span class="p">(</span><span class="mi">100</span><span class="p">));</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">label</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_label_create</span><span class="p">(</span><span class="n">btn</span><span class="p">);</span>
<span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">i</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">3</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">lv_label_set_text_fmt</span><span class="p">(</span><span class="n">label</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;Panel %&quot;</span><span class="n">LV_PRIu32</span><span class="s">&quot;</span><span class="se">\n</span><span class="s">no snap&quot;</span><span class="p">,</span><span class="w"> </span><span class="n">i</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_remove_flag</span><span class="p">(</span><span class="n">btn</span><span class="p">,</span><span class="w"> </span><span class="n">LV_OBJ_FLAG_SNAPPABLE</span><span class="p">);</span>
<span class="w"> </span><span class="p">}</span>
<span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">lv_label_set_text_fmt</span><span class="p">(</span><span class="n">label</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;Panel %&quot;</span><span class="n">LV_PRIu32</span><span class="p">,</span><span class="w"> </span><span class="n">i</span><span class="p">);</span>
<span class="w"> </span><span class="p">}</span>
<span class="w"> </span><span class="n">lv_obj_center</span><span class="p">(</span><span class="n">label</span><span class="p">);</span>
<span class="w"> </span><span class="p">}</span>
<span class="w"> </span><span class="n">lv_obj_update_snap</span><span class="p">(</span><span class="n">panel</span><span class="p">,</span><span class="w"> </span><span class="n">LV_ANIM_ON</span><span class="p">);</span>
<span class="cp">#if LV_USE_SWITCH</span>
<span class="w"> </span><span class="cm">/*Switch between &quot;One scroll&quot; and &quot;Normal scroll&quot; mode*/</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">sw</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_switch_create</span><span class="p">(</span><span class="n">lv_screen_active</span><span class="p">());</span>
<span class="w"> </span><span class="n">lv_obj_align</span><span class="p">(</span><span class="n">sw</span><span class="p">,</span><span class="w"> </span><span class="n">LV_ALIGN_TOP_RIGHT</span><span class="p">,</span><span class="w"> </span><span class="mi">-20</span><span class="p">,</span><span class="w"> </span><span class="mi">10</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_add_event</span><span class="p">(</span><span class="n">sw</span><span class="p">,</span><span class="w"> </span><span class="n">sw_event_cb</span><span class="p">,</span><span class="w"> </span><span class="n">LV_EVENT_ALL</span><span class="p">,</span><span class="w"> </span><span class="n">panel</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">label</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_label_create</span><span class="p">(</span><span class="n">lv_screen_active</span><span class="p">());</span>
<span class="w"> </span><span class="n">lv_label_set_text</span><span class="p">(</span><span class="n">label</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;One scroll&quot;</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_align_to</span><span class="p">(</span><span class="n">label</span><span class="p">,</span><span class="w"> </span><span class="n">sw</span><span class="p">,</span><span class="w"> </span><span class="n">LV_ALIGN_OUT_BOTTOM_MID</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="mi">5</span><span class="p">);</span>
<span class="cp">#endif</span>
<span class="p">}</span>
<span class="cp">#endif</span>
</pre></div>
</div>
</div>
<div class="toggle docutils container">
<div class="header docutils container">
<p>MicroPython code &nbsp;</p><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://github.com/lvgl/lvgl/blob/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_2.py'><i class="fa fa-github"></i>&nbsp;View on GitHub</a><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://sim.lvgl.io/v9.0/micropython/ports/javascript/index.html?script_startup=https://raw.githubusercontent.com/lvgl/lvgl/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/header.py&script=https://raw.githubusercontent.com/lvgl/lvgl/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_2.py'><i class="fa fa-play"></i>&nbsp;MicroPython Simulator</a></div>
<div class="highlight-py notranslate"><div class="highlight"><pre><span></span><span class="k">def</span> <span class="nf">sw_event_cb</span><span class="p">(</span><span class="n">e</span><span class="p">,</span><span class="n">panel</span><span class="p">):</span>
<span class="n">code</span> <span class="o">=</span> <span class="n">e</span><span class="o">.</span><span class="n">get_code</span><span class="p">()</span>
<span class="n">sw</span> <span class="o">=</span> <span class="n">e</span><span class="o">.</span><span class="n">get_target_obj</span><span class="p">()</span>
<span class="k">if</span> <span class="n">code</span> <span class="o">==</span> <span class="n">lv</span><span class="o">.</span><span class="n">EVENT</span><span class="o">.</span><span class="n">VALUE_CHANGED</span><span class="p">:</span>
<span class="k">if</span> <span class="n">sw</span><span class="o">.</span><span class="n">has_state</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">STATE</span><span class="o">.</span><span class="n">CHECKED</span><span class="p">):</span>
<span class="n">panel</span><span class="o">.</span><span class="n">add_flag</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">obj</span><span class="o">.</span><span class="n">FLAG</span><span class="o">.</span><span class="n">SCROLL_ONE</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">panel</span><span class="o">.</span><span class="n">remove_flag</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">obj</span><span class="o">.</span><span class="n">FLAG</span><span class="o">.</span><span class="n">SCROLL_ONE</span><span class="p">)</span>
<span class="c1">#</span>
<span class="c1"># Show an example to scroll snap</span>
<span class="c1">#</span>
<span class="n">panel</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">obj</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">screen_active</span><span class="p">())</span>
<span class="n">panel</span><span class="o">.</span><span class="n">set_size</span><span class="p">(</span><span class="mi">280</span><span class="p">,</span> <span class="mi">150</span><span class="p">)</span>
<span class="n">panel</span><span class="o">.</span><span class="n">set_scroll_snap_x</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">SCROLL_SNAP</span><span class="o">.</span><span class="n">CENTER</span><span class="p">)</span>
<span class="n">panel</span><span class="o">.</span><span class="n">set_flex_flow</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">FLEX_FLOW</span><span class="o">.</span><span class="n">ROW</span><span class="p">)</span>
<span class="n">panel</span><span class="o">.</span><span class="n">center</span><span class="p">()</span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">10</span><span class="p">):</span>
<span class="n">button</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">button</span><span class="p">(</span><span class="n">panel</span><span class="p">)</span>
<span class="n">button</span><span class="o">.</span><span class="n">set_size</span><span class="p">(</span><span class="mi">150</span><span class="p">,</span> <span class="mi">100</span><span class="p">)</span>
<span class="n">label</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">label</span><span class="p">(</span><span class="n">button</span><span class="p">)</span>
<span class="k">if</span> <span class="n">i</span> <span class="o">==</span> <span class="mi">3</span><span class="p">:</span>
<span class="n">label</span><span class="o">.</span><span class="n">set_text</span><span class="p">(</span><span class="s2">&quot;Panel </span><span class="si">{:d}</span><span class="se">\n</span><span class="s2">no snap&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">i</span><span class="p">))</span>
<span class="n">button</span><span class="o">.</span><span class="n">remove_flag</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">obj</span><span class="o">.</span><span class="n">FLAG</span><span class="o">.</span><span class="n">SNAPPABLE</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">label</span><span class="o">.</span><span class="n">set_text</span><span class="p">(</span><span class="s2">&quot;Panel </span><span class="si">{:d}</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">i</span><span class="p">))</span>
<span class="n">label</span><span class="o">.</span><span class="n">center</span><span class="p">()</span>
<span class="n">panel</span><span class="o">.</span><span class="n">update_snap</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">ANIM</span><span class="o">.</span><span class="n">ON</span><span class="p">)</span>
<span class="c1"># Switch between &quot;One scroll&quot; and &quot;Normal scroll&quot; mode</span>
<span class="n">sw</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">switch</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">screen_active</span><span class="p">())</span>
<span class="n">sw</span><span class="o">.</span><span class="n">align</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">ALIGN</span><span class="o">.</span><span class="n">TOP_RIGHT</span><span class="p">,</span> <span class="o">-</span><span class="mi">20</span><span class="p">,</span> <span class="mi">10</span><span class="p">)</span>
<span class="n">sw</span><span class="o">.</span><span class="n">add_event</span><span class="p">(</span><span class="k">lambda</span> <span class="n">evt</span><span class="p">:</span> <span class="n">sw_event_cb</span><span class="p">(</span><span class="n">evt</span><span class="p">,</span><span class="n">panel</span><span class="p">),</span> <span class="n">lv</span><span class="o">.</span><span class="n">EVENT</span><span class="o">.</span><span class="n">ALL</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="n">label</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">label</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">screen_active</span><span class="p">())</span>
<span class="n">label</span><span class="o">.</span><span class="n">set_text</span><span class="p">(</span><span class="s2">&quot;One scroll&quot;</span><span class="p">)</span>
<span class="n">label</span><span class="o">.</span><span class="n">align_to</span><span class="p">(</span><span class="n">sw</span><span class="p">,</span> <span class="n">lv</span><span class="o">.</span><span class="n">ALIGN</span><span class="o">.</span><span class="n">OUT_BOTTOM_MID</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">5</span><span class="p">)</span>
</pre></div>
</div>
</div>
<hr/></section>
<section id="floating-button">
<h3>Floating button<a class="headerlink" href="#floating-button" title="Link to this heading"></a></h3>
<div class='lv-example-container'><div class='lv-example' data-real-src='/9.0/_static/built_lv_examples/index.html?example=lv_example_scroll_3&w=320&h=240'></div><div class='lv-example-description'></div></div><div class="toggle docutils container">
<div class="header docutils container">
<p>C code &nbsp;</p><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://github.com/lvgl/lvgl/blob/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_3.c'><i class="fa fa-github"></i>&nbsp;View on GitHub</a></div>
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="cp">#include</span><span class="w"> </span><span class="cpf">&quot;../lv_examples.h&quot;</span>
<span class="cp">#if LV_BUILD_EXAMPLES &amp;&amp; LV_USE_LIST</span>
<span class="k">static</span><span class="w"> </span><span class="kt">uint32_t</span><span class="w"> </span><span class="n">btn_cnt</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span>
<span class="k">static</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">float_button_event_cb</span><span class="p">(</span><span class="n">lv_event_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">e</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">lv_event_code_t</span><span class="w"> </span><span class="n">code</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_event_get_code</span><span class="p">(</span><span class="n">e</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">float_btn</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_event_get_target</span><span class="p">(</span><span class="n">e</span><span class="p">);</span>
<span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">code</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n">LV_EVENT_CLICKED</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">list</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_event_get_user_data</span><span class="p">(</span><span class="n">e</span><span class="p">);</span>
<span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">buf</span><span class="p">[</span><span class="mi">32</span><span class="p">];</span>
<span class="w"> </span><span class="n">lv_snprintf</span><span class="p">(</span><span class="n">buf</span><span class="p">,</span><span class="w"> </span><span class="k">sizeof</span><span class="p">(</span><span class="n">buf</span><span class="p">),</span><span class="w"> </span><span class="s">&quot;Track %d&quot;</span><span class="p">,</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="p">)</span><span class="n">btn_cnt</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">list_btn</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_list_add_button</span><span class="p">(</span><span class="n">list</span><span class="p">,</span><span class="w"> </span><span class="n">LV_SYMBOL_AUDIO</span><span class="p">,</span><span class="w"> </span><span class="n">buf</span><span class="p">);</span>
<span class="w"> </span><span class="n">btn_cnt</span><span class="o">++</span><span class="p">;</span>
<span class="w"> </span><span class="n">lv_obj_move_foreground</span><span class="p">(</span><span class="n">float_btn</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_scroll_to_view</span><span class="p">(</span><span class="n">list_btn</span><span class="p">,</span><span class="w"> </span><span class="n">LV_ANIM_ON</span><span class="p">);</span>
<span class="w"> </span><span class="p">}</span>
<span class="p">}</span>
<span class="cm">/**</span>
<span class="cm"> * Create a list with a floating button</span>
<span class="cm"> */</span>
<span class="kt">void</span><span class="w"> </span><span class="nf">lv_example_scroll_3</span><span class="p">(</span><span class="kt">void</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">list</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_list_create</span><span class="p">(</span><span class="n">lv_screen_active</span><span class="p">());</span>
<span class="w"> </span><span class="n">lv_obj_set_size</span><span class="p">(</span><span class="n">list</span><span class="p">,</span><span class="w"> </span><span class="mi">280</span><span class="p">,</span><span class="w"> </span><span class="mi">220</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_center</span><span class="p">(</span><span class="n">list</span><span class="p">);</span>
<span class="w"> </span><span class="k">for</span><span class="p">(</span><span class="n">btn_cnt</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">;</span><span class="w"> </span><span class="n">btn_cnt</span><span class="w"> </span><span class="o">&lt;=</span><span class="w"> </span><span class="mi">2</span><span class="p">;</span><span class="w"> </span><span class="n">btn_cnt</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="kt">char</span><span class="w"> </span><span class="n">buf</span><span class="p">[</span><span class="mi">32</span><span class="p">];</span>
<span class="w"> </span><span class="n">lv_snprintf</span><span class="p">(</span><span class="n">buf</span><span class="p">,</span><span class="w"> </span><span class="k">sizeof</span><span class="p">(</span><span class="n">buf</span><span class="p">),</span><span class="w"> </span><span class="s">&quot;Track %d&quot;</span><span class="p">,</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="p">)</span><span class="n">btn_cnt</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_list_add_button</span><span class="p">(</span><span class="n">list</span><span class="p">,</span><span class="w"> </span><span class="n">LV_SYMBOL_AUDIO</span><span class="p">,</span><span class="w"> </span><span class="n">buf</span><span class="p">);</span>
<span class="w"> </span><span class="p">}</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">float_btn</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_button_create</span><span class="p">(</span><span class="n">list</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_size</span><span class="p">(</span><span class="n">float_btn</span><span class="p">,</span><span class="w"> </span><span class="mi">50</span><span class="p">,</span><span class="w"> </span><span class="mi">50</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_add_flag</span><span class="p">(</span><span class="n">float_btn</span><span class="p">,</span><span class="w"> </span><span class="n">LV_OBJ_FLAG_FLOATING</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_align</span><span class="p">(</span><span class="n">float_btn</span><span class="p">,</span><span class="w"> </span><span class="n">LV_ALIGN_BOTTOM_RIGHT</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="o">-</span><span class="n">lv_obj_get_style_pad_right</span><span class="p">(</span><span class="n">list</span><span class="p">,</span><span class="w"> </span><span class="n">LV_PART_MAIN</span><span class="p">));</span>
<span class="w"> </span><span class="n">lv_obj_add_event</span><span class="p">(</span><span class="n">float_btn</span><span class="p">,</span><span class="w"> </span><span class="n">float_button_event_cb</span><span class="p">,</span><span class="w"> </span><span class="n">LV_EVENT_ALL</span><span class="p">,</span><span class="w"> </span><span class="n">list</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_style_radius</span><span class="p">(</span><span class="n">float_btn</span><span class="p">,</span><span class="w"> </span><span class="n">LV_RADIUS_CIRCLE</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_style_bg_image_src</span><span class="p">(</span><span class="n">float_btn</span><span class="p">,</span><span class="w"> </span><span class="n">LV_SYMBOL_PLUS</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_style_text_font</span><span class="p">(</span><span class="n">float_btn</span><span class="p">,</span><span class="w"> </span><span class="n">lv_theme_get_font_large</span><span class="p">(</span><span class="n">float_btn</span><span class="p">),</span><span class="w"> </span><span class="mi">0</span><span class="p">);</span>
<span class="p">}</span>
<span class="cp">#endif</span>
</pre></div>
</div>
</div>
<div class="toggle docutils container">
<div class="header docutils container">
<p>MicroPython code &nbsp;</p><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://github.com/lvgl/lvgl/blob/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_3.py'><i class="fa fa-github"></i>&nbsp;View on GitHub</a><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://sim.lvgl.io/v9.0/micropython/ports/javascript/index.html?script_startup=https://raw.githubusercontent.com/lvgl/lvgl/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/header.py&script=https://raw.githubusercontent.com/lvgl/lvgl/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_3.py'><i class="fa fa-play"></i>&nbsp;MicroPython Simulator</a></div>
<div class="highlight-py notranslate"><div class="highlight"><pre><span></span><span class="k">class</span> <span class="nc">ScrollExample_3</span><span class="p">():</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">button_cnt</span> <span class="o">=</span> <span class="mi">1</span>
<span class="c1">#</span>
<span class="c1"># Create a list with a floating button</span>
<span class="c1">#</span>
<span class="nb">list</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">list</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">screen_active</span><span class="p">())</span>
<span class="nb">list</span><span class="o">.</span><span class="n">set_size</span><span class="p">(</span><span class="mi">280</span><span class="p">,</span> <span class="mi">220</span><span class="p">)</span>
<span class="nb">list</span><span class="o">.</span><span class="n">center</span><span class="p">()</span>
<span class="k">for</span> <span class="n">button_cnt</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">2</span><span class="p">):</span>
<span class="nb">list</span><span class="o">.</span><span class="n">add_button</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">SYMBOL</span><span class="o">.</span><span class="n">AUDIO</span><span class="p">,</span><span class="s2">&quot;Track </span><span class="si">{:d}</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">button_cnt</span><span class="p">))</span>
<span class="n">float_button</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">button</span><span class="p">(</span><span class="nb">list</span><span class="p">)</span>
<span class="n">float_button</span><span class="o">.</span><span class="n">set_size</span><span class="p">(</span><span class="mi">50</span><span class="p">,</span> <span class="mi">50</span><span class="p">)</span>
<span class="n">float_button</span><span class="o">.</span><span class="n">add_flag</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">obj</span><span class="o">.</span><span class="n">FLAG</span><span class="o">.</span><span class="n">FLOATING</span><span class="p">)</span>
<span class="n">float_button</span><span class="o">.</span><span class="n">align</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">ALIGN</span><span class="o">.</span><span class="n">BOTTOM_RIGHT</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="o">-</span><span class="nb">list</span><span class="o">.</span><span class="n">get_style_pad_right</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">PART</span><span class="o">.</span><span class="n">MAIN</span><span class="p">))</span>
<span class="n">float_button</span><span class="o">.</span><span class="n">add_event</span><span class="p">(</span><span class="k">lambda</span> <span class="n">evt</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">float_button_event_cb</span><span class="p">(</span><span class="n">evt</span><span class="p">,</span><span class="nb">list</span><span class="p">),</span> <span class="n">lv</span><span class="o">.</span><span class="n">EVENT</span><span class="o">.</span><span class="n">ALL</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="n">float_button</span><span class="o">.</span><span class="n">set_style_radius</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">RADIUS_CIRCLE</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
<span class="n">float_button</span><span class="o">.</span><span class="n">set_style_bg_image_src</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">SYMBOL</span><span class="o">.</span><span class="n">PLUS</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
<span class="n">float_button</span><span class="o">.</span><span class="n">set_style_text_font</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">theme_get_font_large</span><span class="p">(</span><span class="n">float_button</span><span class="p">),</span> <span class="mi">0</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">float_button_event_cb</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span><span class="n">e</span><span class="p">,</span><span class="nb">list</span><span class="p">):</span>
<span class="n">code</span> <span class="o">=</span> <span class="n">e</span><span class="o">.</span><span class="n">get_code</span><span class="p">()</span>
<span class="n">float_button</span> <span class="o">=</span> <span class="n">e</span><span class="o">.</span><span class="n">get_target_obj</span><span class="p">()</span>
<span class="k">if</span> <span class="n">code</span> <span class="o">==</span> <span class="n">lv</span><span class="o">.</span><span class="n">EVENT</span><span class="o">.</span><span class="n">CLICKED</span><span class="p">:</span>
<span class="n">list_button</span> <span class="o">=</span> <span class="nb">list</span><span class="o">.</span><span class="n">add_button</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">SYMBOL</span><span class="o">.</span><span class="n">AUDIO</span><span class="p">,</span> <span class="s2">&quot;Track </span><span class="si">{:d}</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">button_cnt</span><span class="p">))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">button_cnt</span> <span class="o">+=</span> <span class="mi">1</span>
<span class="n">float_button</span><span class="o">.</span><span class="n">move_foreground</span><span class="p">()</span>
<span class="n">list_button</span><span class="o">.</span><span class="n">scroll_to_view</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">ANIM</span><span class="o">.</span><span class="n">ON</span><span class="p">)</span>
<span class="n">scroll_example_3</span> <span class="o">=</span> <span class="n">ScrollExample_3</span><span class="p">()</span>
</pre></div>
</div>
</div>
<hr/></section>
<section id="styling-the-scrollbars">
<h3>Styling the scrollbars<a class="headerlink" href="#styling-the-scrollbars" title="Link to this heading"></a></h3>
<div class='lv-example-container'><div class='lv-example' data-real-src='/9.0/_static/built_lv_examples/index.html?example=lv_example_scroll_4&w=320&h=240'></div><div class='lv-example-description'></div></div><div class="toggle docutils container">
<div class="header docutils container">
<p>C code &nbsp;</p><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://github.com/lvgl/lvgl/blob/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_4.c'><i class="fa fa-github"></i>&nbsp;View on GitHub</a></div>
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="cp">#include</span><span class="w"> </span><span class="cpf">&quot;../lv_examples.h&quot;</span>
<span class="cp">#if LV_BUILD_EXAMPLES &amp;&amp; LV_USE_LIST</span>
<span class="cm">/**</span>
<span class="cm"> * Styling the scrollbars</span>
<span class="cm"> */</span>
<span class="kt">void</span><span class="w"> </span><span class="nf">lv_example_scroll_4</span><span class="p">(</span><span class="kt">void</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">obj</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_obj_create</span><span class="p">(</span><span class="n">lv_screen_active</span><span class="p">());</span>
<span class="w"> </span><span class="n">lv_obj_set_size</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span><span class="w"> </span><span class="mi">200</span><span class="p">,</span><span class="w"> </span><span class="mi">100</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_center</span><span class="p">(</span><span class="n">obj</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">label</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_label_create</span><span class="p">(</span><span class="n">obj</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_label_set_text</span><span class="p">(</span><span class="n">label</span><span class="p">,</span>
<span class="w"> </span><span class="s">&quot;Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span><span class="se">\n</span><span class="s">&quot;</span>
<span class="w"> </span><span class="s">&quot;Etiam dictum, tortor vestibulum lacinia laoreet, mi neque consectetur neque, vel mattis odio dolor egestas ligula. </span><span class="se">\n</span><span class="s">&quot;</span>
<span class="w"> </span><span class="s">&quot;Sed vestibulum sapien nulla, id convallis ex porttitor nec. </span><span class="se">\n</span><span class="s">&quot;</span>
<span class="w"> </span><span class="s">&quot;Duis et massa eu libero accumsan faucibus a in arcu. </span><span class="se">\n</span><span class="s">&quot;</span>
<span class="w"> </span><span class="s">&quot;Ut pulvinar odio lorem, vel tempus turpis condimentum quis. Nam consectetur condimentum sem in auctor. </span><span class="se">\n</span><span class="s">&quot;</span>
<span class="w"> </span><span class="s">&quot;Sed nisl augue, venenatis in blandit et, gravida ac tortor. </span><span class="se">\n</span><span class="s">&quot;</span>
<span class="w"> </span><span class="s">&quot;Etiam dapibus elementum suscipit. </span><span class="se">\n</span><span class="s">&quot;</span>
<span class="w"> </span><span class="s">&quot;Proin mollis sollicitudin convallis. </span><span class="se">\n</span><span class="s">&quot;</span>
<span class="w"> </span><span class="s">&quot;Integer dapibus tempus arcu nec viverra. </span><span class="se">\n</span><span class="s">&quot;</span>
<span class="w"> </span><span class="s">&quot;Donec molestie nulla enim, eu interdum velit placerat quis. </span><span class="se">\n</span><span class="s">&quot;</span>
<span class="w"> </span><span class="s">&quot;Donec id efficitur risus, at molestie turpis. </span><span class="se">\n</span><span class="s">&quot;</span>
<span class="w"> </span><span class="s">&quot;Suspendisse vestibulum consectetur nunc ut commodo. </span><span class="se">\n</span><span class="s">&quot;</span>
<span class="w"> </span><span class="s">&quot;Fusce molestie rhoncus nisi sit amet tincidunt. </span><span class="se">\n</span><span class="s">&quot;</span>
<span class="w"> </span><span class="s">&quot;Suspendisse a nunc ut magna ornare volutpat.&quot;</span><span class="p">);</span>
<span class="w"> </span><span class="cm">/*Remove the style of scrollbar to have clean start*/</span>
<span class="w"> </span><span class="n">lv_obj_remove_style</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span><span class="w"> </span><span class="nb">NULL</span><span class="p">,</span><span class="w"> </span><span class="n">LV_PART_SCROLLBAR</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">LV_STATE_ANY</span><span class="p">);</span>
<span class="w"> </span><span class="cm">/*Create a transition the animate the some properties on state change*/</span>
<span class="w"> </span><span class="k">static</span><span class="w"> </span><span class="k">const</span><span class="w"> </span><span class="n">lv_style_prop_t</span><span class="w"> </span><span class="n">props</span><span class="p">[]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">{</span><span class="n">LV_STYLE_BG_OPA</span><span class="p">,</span><span class="w"> </span><span class="n">LV_STYLE_WIDTH</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">};</span>
<span class="w"> </span><span class="k">static</span><span class="w"> </span><span class="n">lv_style_transition_dsc_t</span><span class="w"> </span><span class="n">trans</span><span class="p">;</span>
<span class="w"> </span><span class="n">lv_style_transition_dsc_init</span><span class="p">(</span><span class="o">&amp;</span><span class="n">trans</span><span class="p">,</span><span class="w"> </span><span class="n">props</span><span class="p">,</span><span class="w"> </span><span class="n">lv_anim_path_linear</span><span class="p">,</span><span class="w"> </span><span class="mi">200</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="nb">NULL</span><span class="p">);</span>
<span class="w"> </span><span class="cm">/*Create a style for the scrollbars*/</span>
<span class="w"> </span><span class="k">static</span><span class="w"> </span><span class="n">lv_style_t</span><span class="w"> </span><span class="n">style</span><span class="p">;</span>
<span class="w"> </span><span class="n">lv_style_init</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_style_set_width</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style</span><span class="p">,</span><span class="w"> </span><span class="mi">4</span><span class="p">);</span><span class="w"> </span><span class="cm">/*Width of the scrollbar*/</span>
<span class="w"> </span><span class="n">lv_style_set_pad_right</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style</span><span class="p">,</span><span class="w"> </span><span class="mi">5</span><span class="p">);</span><span class="w"> </span><span class="cm">/*Space from the parallel side*/</span>
<span class="w"> </span><span class="n">lv_style_set_pad_top</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style</span><span class="p">,</span><span class="w"> </span><span class="mi">5</span><span class="p">);</span><span class="w"> </span><span class="cm">/*Space from the perpendicular side*/</span>
<span class="w"> </span><span class="n">lv_style_set_radius</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style</span><span class="p">,</span><span class="w"> </span><span class="mi">2</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_style_set_bg_opa</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style</span><span class="p">,</span><span class="w"> </span><span class="n">LV_OPA_70</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_style_set_bg_color</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style</span><span class="p">,</span><span class="w"> </span><span class="n">lv_palette_main</span><span class="p">(</span><span class="n">LV_PALETTE_BLUE</span><span class="p">));</span>
<span class="w"> </span><span class="n">lv_style_set_border_color</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style</span><span class="p">,</span><span class="w"> </span><span class="n">lv_palette_darken</span><span class="p">(</span><span class="n">LV_PALETTE_BLUE</span><span class="p">,</span><span class="w"> </span><span class="mi">3</span><span class="p">));</span>
<span class="w"> </span><span class="n">lv_style_set_border_width</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style</span><span class="p">,</span><span class="w"> </span><span class="mi">2</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_style_set_shadow_width</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style</span><span class="p">,</span><span class="w"> </span><span class="mi">8</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_style_set_shadow_spread</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style</span><span class="p">,</span><span class="w"> </span><span class="mi">2</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_style_set_shadow_color</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style</span><span class="p">,</span><span class="w"> </span><span class="n">lv_palette_darken</span><span class="p">(</span><span class="n">LV_PALETTE_BLUE</span><span class="p">,</span><span class="w"> </span><span class="mi">1</span><span class="p">));</span>
<span class="w"> </span><span class="n">lv_style_set_transition</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style</span><span class="p">,</span><span class="w"> </span><span class="o">&amp;</span><span class="n">trans</span><span class="p">);</span>
<span class="w"> </span><span class="cm">/*Make the scrollbars wider and use 100% opacity when scrolled*/</span>
<span class="w"> </span><span class="k">static</span><span class="w"> </span><span class="n">lv_style_t</span><span class="w"> </span><span class="n">style_scrolled</span><span class="p">;</span>
<span class="w"> </span><span class="n">lv_style_init</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style_scrolled</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_style_set_width</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style_scrolled</span><span class="p">,</span><span class="w"> </span><span class="mi">8</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_style_set_bg_opa</span><span class="p">(</span><span class="o">&amp;</span><span class="n">style_scrolled</span><span class="p">,</span><span class="w"> </span><span class="n">LV_OPA_COVER</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_add_style</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span><span class="w"> </span><span class="o">&amp;</span><span class="n">style</span><span class="p">,</span><span class="w"> </span><span class="n">LV_PART_SCROLLBAR</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_add_style</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span><span class="w"> </span><span class="o">&amp;</span><span class="n">style_scrolled</span><span class="p">,</span><span class="w"> </span><span class="n">LV_PART_SCROLLBAR</span><span class="w"> </span><span class="o">|</span><span class="w"> </span><span class="n">LV_STATE_SCROLLED</span><span class="p">);</span>
<span class="p">}</span>
<span class="cp">#endif</span>
</pre></div>
</div>
</div>
<div class="toggle docutils container">
<div class="header docutils container">
<p>MicroPython code &nbsp;</p><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://github.com/lvgl/lvgl/blob/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_4.py'><i class="fa fa-github"></i>&nbsp;View on GitHub</a><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://sim.lvgl.io/v9.0/micropython/ports/javascript/index.html?script_startup=https://raw.githubusercontent.com/lvgl/lvgl/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/header.py&script=https://raw.githubusercontent.com/lvgl/lvgl/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_4.py'><i class="fa fa-play"></i>&nbsp;MicroPython Simulator</a></div>
<div class="highlight-py notranslate"><div class="highlight"><pre><span></span><span class="c1">#</span>
<span class="c1"># Styling the scrollbars</span>
<span class="c1">#</span>
<span class="n">obj</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">obj</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">screen_active</span><span class="p">())</span>
<span class="n">obj</span><span class="o">.</span><span class="n">set_size</span><span class="p">(</span><span class="mi">200</span><span class="p">,</span> <span class="mi">100</span><span class="p">)</span>
<span class="n">obj</span><span class="o">.</span><span class="n">center</span><span class="p">()</span>
<span class="n">label</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">label</span><span class="p">(</span><span class="n">obj</span><span class="p">)</span>
<span class="n">label</span><span class="o">.</span><span class="n">set_text</span><span class="p">(</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd">Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span>
<span class="sd">Etiam dictum, tortor vestibulum lacinia laoreet, mi neque consectetur neque, vel mattis odio dolor egestas ligula.</span>
<span class="sd">Sed vestibulum sapien nulla, id convallis ex porttitor nec.</span>
<span class="sd">Duis et massa eu libero accumsan faucibus a in arcu.</span>
<span class="sd">Ut pulvinar odio lorem, vel tempus turpis condimentum quis. Nam consectetur condimentum sem in auctor.</span>
<span class="sd">Sed nisl augue, venenatis in blandit et, gravida ac tortor.</span>
<span class="sd">Etiam dapibus elementum suscipit.</span>
<span class="sd">Proin mollis sollicitudin convallis.</span>
<span class="sd">Integer dapibus tempus arcu nec viverra.</span>
<span class="sd">Donec molestie nulla enim, eu interdum velit placerat quis.</span>
<span class="sd">Donec id efficitur risus, at molestie turpis.</span>
<span class="sd">Suspendisse vestibulum consectetur nunc ut commodo.</span>
<span class="sd">Fusce molestie rhoncus nisi sit amet tincidunt.</span>
<span class="sd">Suspendisse a nunc ut magna ornare volutpat.</span>
<span class="sd">&quot;&quot;&quot;</span><span class="p">)</span>
<span class="c1"># Remove the style of scrollbar to have clean start</span>
<span class="n">obj</span><span class="o">.</span><span class="n">remove_style</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="n">lv</span><span class="o">.</span><span class="n">PART</span><span class="o">.</span><span class="n">SCROLLBAR</span> <span class="o">|</span> <span class="n">lv</span><span class="o">.</span><span class="n">STATE</span><span class="o">.</span><span class="n">ANY</span><span class="p">)</span>
<span class="c1"># Create a transition the animate the some properties on state change</span>
<span class="n">props</span> <span class="o">=</span> <span class="p">[</span><span class="n">lv</span><span class="o">.</span><span class="n">STYLE</span><span class="o">.</span><span class="n">BG_OPA</span><span class="p">,</span> <span class="n">lv</span><span class="o">.</span><span class="n">STYLE</span><span class="o">.</span><span class="n">WIDTH</span><span class="p">,</span> <span class="mi">0</span><span class="p">]</span>
<span class="n">trans</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">style_transition_dsc_t</span><span class="p">()</span>
<span class="n">trans</span><span class="o">.</span><span class="n">init</span><span class="p">(</span><span class="n">props</span><span class="p">,</span> <span class="n">lv</span><span class="o">.</span><span class="n">anim_t</span><span class="o">.</span><span class="n">path_linear</span><span class="p">,</span> <span class="mi">200</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="c1"># Create a style for the scrollbars</span>
<span class="n">style</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">style_t</span><span class="p">()</span>
<span class="n">style</span><span class="o">.</span><span class="n">init</span><span class="p">()</span>
<span class="n">style</span><span class="o">.</span><span class="n">set_width</span><span class="p">(</span><span class="mi">4</span><span class="p">)</span> <span class="c1"># Width of the scrollbar</span>
<span class="n">style</span><span class="o">.</span><span class="n">set_pad_right</span><span class="p">(</span><span class="mi">5</span><span class="p">)</span> <span class="c1"># Space from the parallel side</span>
<span class="n">style</span><span class="o">.</span><span class="n">set_pad_top</span><span class="p">(</span><span class="mi">5</span><span class="p">)</span> <span class="c1"># Space from the perpendicular side</span>
<span class="n">style</span><span class="o">.</span><span class="n">set_radius</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span>
<span class="n">style</span><span class="o">.</span><span class="n">set_bg_opa</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">OPA</span><span class="o">.</span><span class="n">_70</span><span class="p">)</span>
<span class="n">style</span><span class="o">.</span><span class="n">set_bg_color</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">palette_main</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">PALETTE</span><span class="o">.</span><span class="n">BLUE</span><span class="p">))</span>
<span class="n">style</span><span class="o">.</span><span class="n">set_border_color</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">palette_darken</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">PALETTE</span><span class="o">.</span><span class="n">BLUE</span><span class="p">,</span> <span class="mi">3</span><span class="p">))</span>
<span class="n">style</span><span class="o">.</span><span class="n">set_border_width</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span>
<span class="n">style</span><span class="o">.</span><span class="n">set_shadow_width</span><span class="p">(</span><span class="mi">8</span><span class="p">)</span>
<span class="n">style</span><span class="o">.</span><span class="n">set_shadow_spread</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span>
<span class="n">style</span><span class="o">.</span><span class="n">set_shadow_color</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">palette_darken</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">PALETTE</span><span class="o">.</span><span class="n">BLUE</span><span class="p">,</span> <span class="mi">1</span><span class="p">))</span>
<span class="n">style</span><span class="o">.</span><span class="n">set_transition</span><span class="p">(</span><span class="n">trans</span><span class="p">)</span>
<span class="c1"># Make the scrollbars wider and use 100% opacity when scrolled</span>
<span class="n">style_scrolled</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">style_t</span><span class="p">()</span>
<span class="n">style_scrolled</span><span class="o">.</span><span class="n">init</span><span class="p">()</span>
<span class="n">style_scrolled</span><span class="o">.</span><span class="n">set_width</span><span class="p">(</span><span class="mi">8</span><span class="p">)</span>
<span class="n">style_scrolled</span><span class="o">.</span><span class="n">set_bg_opa</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">OPA</span><span class="o">.</span><span class="n">COVER</span><span class="p">)</span>
<span class="n">obj</span><span class="o">.</span><span class="n">add_style</span><span class="p">(</span><span class="n">style</span><span class="p">,</span> <span class="n">lv</span><span class="o">.</span><span class="n">PART</span><span class="o">.</span><span class="n">SCROLLBAR</span><span class="p">)</span>
<span class="n">obj</span><span class="o">.</span><span class="n">add_style</span><span class="p">(</span><span class="n">style_scrolled</span><span class="p">,</span> <span class="n">lv</span><span class="o">.</span><span class="n">PART</span><span class="o">.</span><span class="n">SCROLLBAR</span> <span class="o">|</span> <span class="n">lv</span><span class="o">.</span><span class="n">STATE</span><span class="o">.</span><span class="n">SCROLLED</span><span class="p">)</span>
</pre></div>
</div>
</div>
<hr/></section>
<section id="right-to-left-scrolling">
<h3>Right to left scrolling<a class="headerlink" href="#right-to-left-scrolling" title="Link to this heading"></a></h3>
<div class='lv-example-container'><div class='lv-example' data-real-src='/9.0/_static/built_lv_examples/index.html?example=lv_example_scroll_5&w=320&h=240'></div><div class='lv-example-description'></div></div><div class="toggle docutils container">
<div class="header docutils container">
<p>C code &nbsp;</p><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://github.com/lvgl/lvgl/blob/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_5.c'><i class="fa fa-github"></i>&nbsp;View on GitHub</a></div>
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="cp">#include</span><span class="w"> </span><span class="cpf">&quot;../lv_examples.h&quot;</span>
<span class="cp">#if LV_BUILD_EXAMPLES &amp;&amp; LV_FONT_DEJAVU_16_PERSIAN_HEBREW</span>
<span class="cm">/**</span>
<span class="cm"> * Scrolling with Right To Left base direction</span>
<span class="cm"> */</span>
<span class="kt">void</span><span class="w"> </span><span class="nf">lv_example_scroll_5</span><span class="p">(</span><span class="kt">void</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">obj</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_obj_create</span><span class="p">(</span><span class="n">lv_screen_active</span><span class="p">());</span>
<span class="w"> </span><span class="n">lv_obj_set_style_base_dir</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span><span class="w"> </span><span class="n">LV_BASE_DIR_RTL</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_size</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span><span class="w"> </span><span class="mi">200</span><span class="p">,</span><span class="w"> </span><span class="mi">100</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_center</span><span class="p">(</span><span class="n">obj</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">label</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_label_create</span><span class="p">(</span><span class="n">obj</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_label_set_text</span><span class="p">(</span><span class="n">label</span><span class="p">,</span>
<span class="w"> </span><span class="s">&quot;میکروکُنترولر (به انگلیسی: Microcontroller) گونه‌ای ریزپردازنده است که دارای حافظهٔ دسترسی تصادفی (RAM) و حافظهٔ فقط‌خواندنی (ROM)، تایمر، پورت‌های ورودی و خروجی (I/O) و درگاه ترتیبی (Serial Port پورت سریال)، درون خود تراشه است، و می‌تواند به تنهایی ابزارهای دیگر را کنترل کند. به عبارت دیگر یک میکروکنترلر، مدار مجتمع کوچکی است که از یک CPU کوچک و اجزای دیگری مانند تایمر، درگاه‌های ورودی و خروجی آنالوگ و دیجیتال و حافظه تشکیل شده‌است.&quot;</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_width</span><span class="p">(</span><span class="n">label</span><span class="p">,</span><span class="w"> </span><span class="mi">400</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_style_text_font</span><span class="p">(</span><span class="n">label</span><span class="p">,</span><span class="w"> </span><span class="o">&amp;</span><span class="n">lv_font_dejavu_16_persian_hebrew</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">);</span>
<span class="p">}</span>
<span class="cp">#endif</span>
</pre></div>
</div>
</div>
<div class="toggle docutils container">
<div class="header docutils container">
<p>MicroPython code &nbsp;</p><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://github.com/lvgl/lvgl/blob/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_5.py'><i class="fa fa-github"></i>&nbsp;View on GitHub</a><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://sim.lvgl.io/v9.0/micropython/ports/javascript/index.html?script_startup=https://raw.githubusercontent.com/lvgl/lvgl/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/header.py&script=https://raw.githubusercontent.com/lvgl/lvgl/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_5.py'><i class="fa fa-play"></i>&nbsp;MicroPython Simulator</a></div>
<div class="highlight-py notranslate"><div class="highlight"><pre><span></span><span class="c1">#</span>
<span class="c1"># Scrolling with Right To Left base direction</span>
<span class="c1">#</span>
<span class="n">obj</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">obj</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">screen_active</span><span class="p">())</span>
<span class="n">obj</span><span class="o">.</span><span class="n">set_style_base_dir</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">BASE_DIR</span><span class="o">.</span><span class="n">RTL</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
<span class="n">obj</span><span class="o">.</span><span class="n">set_size</span><span class="p">(</span><span class="mi">200</span><span class="p">,</span> <span class="mi">100</span><span class="p">)</span>
<span class="n">obj</span><span class="o">.</span><span class="n">center</span><span class="p">()</span>
<span class="n">label</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">label</span><span class="p">(</span><span class="n">obj</span><span class="p">)</span>
<span class="n">label</span><span class="o">.</span><span class="n">set_text</span><span class="p">(</span><span class="s2">&quot;میکروکُنترولر (به انگلیسی: Microcontroller) گونه‌ای ریزپردازنده است که دارای حافظهٔ دسترسی تصادفی (RAM) و حافظهٔ فقط‌خواندنی (ROM)، تایمر، پورت‌های ورودی و خروجی (I/O) و درگاه ترتیبی (Serial Port پورت سریال)، درون خود تراشه است، و می‌تواند به تنهایی ابزارهای دیگر را کنترل کند. به عبارت دیگر یک میکروکنترلر، مدار مجتمع کوچکی است که از یک CPU کوچک و اجزای دیگری مانند تایمر، درگاه‌های ورودی و خروجی آنالوگ و دیجیتال و حافظه تشکیل شده‌است.&quot;</span><span class="p">)</span>
<span class="n">label</span><span class="o">.</span><span class="n">set_width</span><span class="p">(</span><span class="mi">400</span><span class="p">)</span>
<span class="n">label</span><span class="o">.</span><span class="n">set_style_text_font</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">font_dejavu_16_persian_hebrew</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
</pre></div>
</div>
</div>
<hr/></section>
<section id="translate-on-scroll">
<h3>Translate on scroll<a class="headerlink" href="#translate-on-scroll" title="Link to this heading"></a></h3>
<div class='lv-example-container'><div class='lv-example' data-real-src='/9.0/_static/built_lv_examples/index.html?example=lv_example_scroll_6&w=320&h=240'></div><div class='lv-example-description'></div></div><div class="toggle docutils container">
<div class="header docutils container">
<p>C code &nbsp;</p><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://github.com/lvgl/lvgl/blob/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_6.c'><i class="fa fa-github"></i>&nbsp;View on GitHub</a></div>
<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="cp">#include</span><span class="w"> </span><span class="cpf">&quot;../lv_examples.h&quot;</span>
<span class="cp">#if LV_BUILD_EXAMPLES &amp;&amp; LV_USE_FLEX</span>
<span class="k">static</span><span class="w"> </span><span class="kt">void</span><span class="w"> </span><span class="nf">scroll_event_cb</span><span class="p">(</span><span class="n">lv_event_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">e</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">cont</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_event_get_target</span><span class="p">(</span><span class="n">e</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_area_t</span><span class="w"> </span><span class="n">cont_a</span><span class="p">;</span>
<span class="w"> </span><span class="n">lv_obj_get_coords</span><span class="p">(</span><span class="n">cont</span><span class="p">,</span><span class="w"> </span><span class="o">&amp;</span><span class="n">cont_a</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_coord_t</span><span class="w"> </span><span class="n">cont_y_center</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">cont_a</span><span class="p">.</span><span class="n">y1</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">lv_area_get_height</span><span class="p">(</span><span class="o">&amp;</span><span class="n">cont_a</span><span class="p">)</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mi">2</span><span class="p">;</span>
<span class="w"> </span><span class="n">lv_coord_t</span><span class="w"> </span><span class="n">r</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_obj_get_height</span><span class="p">(</span><span class="n">cont</span><span class="p">)</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="mi">7</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mi">10</span><span class="p">;</span>
<span class="w"> </span><span class="kt">uint32_t</span><span class="w"> </span><span class="n">i</span><span class="p">;</span>
<span class="w"> </span><span class="kt">uint32_t</span><span class="w"> </span><span class="n">child_cnt</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_obj_get_child_cnt</span><span class="p">(</span><span class="n">cont</span><span class="p">);</span>
<span class="w"> </span><span class="k">for</span><span class="p">(</span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o">&lt;</span><span class="w"> </span><span class="n">child_cnt</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">child</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_obj_get_child</span><span class="p">(</span><span class="n">cont</span><span class="p">,</span><span class="w"> </span><span class="n">i</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_area_t</span><span class="w"> </span><span class="n">child_a</span><span class="p">;</span>
<span class="w"> </span><span class="n">lv_obj_get_coords</span><span class="p">(</span><span class="n">child</span><span class="p">,</span><span class="w"> </span><span class="o">&amp;</span><span class="n">child_a</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_coord_t</span><span class="w"> </span><span class="n">child_y_center</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">child_a</span><span class="p">.</span><span class="n">y1</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">lv_area_get_height</span><span class="p">(</span><span class="o">&amp;</span><span class="n">child_a</span><span class="p">)</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mi">2</span><span class="p">;</span>
<span class="w"> </span><span class="n">lv_coord_t</span><span class="w"> </span><span class="n">diff_y</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">child_y_center</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="n">cont_y_center</span><span class="p">;</span>
<span class="w"> </span><span class="n">diff_y</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">LV_ABS</span><span class="p">(</span><span class="n">diff_y</span><span class="p">);</span>
<span class="w"> </span><span class="cm">/*Get the x of diff_y on a circle.*/</span>
<span class="w"> </span><span class="n">lv_coord_t</span><span class="w"> </span><span class="n">x</span><span class="p">;</span>
<span class="w"> </span><span class="cm">/*If diff_y is out of the circle use the last point of the circle (the radius)*/</span>
<span class="w"> </span><span class="k">if</span><span class="p">(</span><span class="n">diff_y</span><span class="w"> </span><span class="o">&gt;=</span><span class="w"> </span><span class="n">r</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">x</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">r</span><span class="p">;</span>
<span class="w"> </span><span class="p">}</span>
<span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="cm">/*Use Pythagoras theorem to get x from radius and y*/</span>
<span class="w"> </span><span class="kt">uint32_t</span><span class="w"> </span><span class="n">x_sqr</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">r</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">r</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="n">diff_y</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">diff_y</span><span class="p">;</span>
<span class="w"> </span><span class="n">lv_sqrt_res_t</span><span class="w"> </span><span class="n">res</span><span class="p">;</span>
<span class="w"> </span><span class="n">lv_sqrt</span><span class="p">(</span><span class="n">x_sqr</span><span class="p">,</span><span class="w"> </span><span class="o">&amp;</span><span class="n">res</span><span class="p">,</span><span class="w"> </span><span class="mh">0x8000</span><span class="p">);</span><span class="w"> </span><span class="cm">/*Use lvgl&#39;s built in sqrt root function*/</span>
<span class="w"> </span><span class="n">x</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">r</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="n">res</span><span class="p">.</span><span class="n">i</span><span class="p">;</span>
<span class="w"> </span><span class="p">}</span>
<span class="w"> </span><span class="cm">/*Translate the item by the calculated X coordinate*/</span>
<span class="w"> </span><span class="n">lv_obj_set_style_translate_x</span><span class="p">(</span><span class="n">child</span><span class="p">,</span><span class="w"> </span><span class="n">x</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">);</span>
<span class="w"> </span><span class="cm">/*Use some opacity with larger translations*/</span>
<span class="w"> </span><span class="n">lv_opa_t</span><span class="w"> </span><span class="n">opa</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_map</span><span class="p">(</span><span class="n">x</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="n">r</span><span class="p">,</span><span class="w"> </span><span class="n">LV_OPA_TRANSP</span><span class="p">,</span><span class="w"> </span><span class="n">LV_OPA_COVER</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_style_opa</span><span class="p">(</span><span class="n">child</span><span class="p">,</span><span class="w"> </span><span class="n">LV_OPA_COVER</span><span class="w"> </span><span class="o">-</span><span class="w"> </span><span class="n">opa</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">);</span>
<span class="w"> </span><span class="p">}</span>
<span class="p">}</span>
<span class="cm">/**</span>
<span class="cm"> * Translate the object as they scroll</span>
<span class="cm"> */</span>
<span class="kt">void</span><span class="w"> </span><span class="nf">lv_example_scroll_6</span><span class="p">(</span><span class="kt">void</span><span class="p">)</span>
<span class="p">{</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">cont</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_obj_create</span><span class="p">(</span><span class="n">lv_screen_active</span><span class="p">());</span>
<span class="w"> </span><span class="n">lv_obj_set_size</span><span class="p">(</span><span class="n">cont</span><span class="p">,</span><span class="w"> </span><span class="mi">200</span><span class="p">,</span><span class="w"> </span><span class="mi">200</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_center</span><span class="p">(</span><span class="n">cont</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_flex_flow</span><span class="p">(</span><span class="n">cont</span><span class="p">,</span><span class="w"> </span><span class="n">LV_FLEX_FLOW_COLUMN</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_add_event</span><span class="p">(</span><span class="n">cont</span><span class="p">,</span><span class="w"> </span><span class="n">scroll_event_cb</span><span class="p">,</span><span class="w"> </span><span class="n">LV_EVENT_SCROLL</span><span class="p">,</span><span class="w"> </span><span class="nb">NULL</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_style_radius</span><span class="p">(</span><span class="n">cont</span><span class="p">,</span><span class="w"> </span><span class="n">LV_RADIUS_CIRCLE</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_style_clip_corner</span><span class="p">(</span><span class="n">cont</span><span class="p">,</span><span class="w"> </span><span class="nb">true</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_scroll_dir</span><span class="p">(</span><span class="n">cont</span><span class="p">,</span><span class="w"> </span><span class="n">LV_DIR_VER</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_scroll_snap_y</span><span class="p">(</span><span class="n">cont</span><span class="p">,</span><span class="w"> </span><span class="n">LV_SCROLL_SNAP_CENTER</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_scrollbar_mode</span><span class="p">(</span><span class="n">cont</span><span class="p">,</span><span class="w"> </span><span class="n">LV_SCROLLBAR_MODE_OFF</span><span class="p">);</span>
<span class="w"> </span><span class="kt">uint32_t</span><span class="w"> </span><span class="n">i</span><span class="p">;</span>
<span class="w"> </span><span class="k">for</span><span class="p">(</span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o">&lt;</span><span class="w"> </span><span class="mi">20</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">btn</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_button_create</span><span class="p">(</span><span class="n">cont</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_obj_set_width</span><span class="p">(</span><span class="n">btn</span><span class="p">,</span><span class="w"> </span><span class="n">lv_pct</span><span class="p">(</span><span class="mi">100</span><span class="p">));</span>
<span class="w"> </span><span class="n">lv_obj_t</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="n">label</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">lv_label_create</span><span class="p">(</span><span class="n">btn</span><span class="p">);</span>
<span class="w"> </span><span class="n">lv_label_set_text_fmt</span><span class="p">(</span><span class="n">label</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;Button %&quot;</span><span class="n">LV_PRIu32</span><span class="p">,</span><span class="w"> </span><span class="n">i</span><span class="p">);</span>
<span class="w"> </span><span class="p">}</span>
<span class="w"> </span><span class="cm">/*Update the buttons position manually for first*/</span>
<span class="w"> </span><span class="n">lv_obj_send_event</span><span class="p">(</span><span class="n">cont</span><span class="p">,</span><span class="w"> </span><span class="n">LV_EVENT_SCROLL</span><span class="p">,</span><span class="w"> </span><span class="nb">NULL</span><span class="p">);</span>
<span class="w"> </span><span class="cm">/*Be sure the fist button is in the middle*/</span>
<span class="w"> </span><span class="n">lv_obj_scroll_to_view</span><span class="p">(</span><span class="n">lv_obj_get_child</span><span class="p">(</span><span class="n">cont</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">),</span><span class="w"> </span><span class="n">LV_ANIM_OFF</span><span class="p">);</span>
<span class="p">}</span>
<span class="cp">#endif</span>
</pre></div>
</div>
</div>
<div class="toggle docutils container">
<div class="header docutils container">
<p>MicroPython code &nbsp;</p><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://github.com/lvgl/lvgl/blob/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_6.py'><i class="fa fa-github"></i>&nbsp;View on GitHub</a><a class='lv-example-link-button' onclick="event.stopPropagation();" href='https://sim.lvgl.io/v9.0/micropython/ports/javascript/index.html?script_startup=https://raw.githubusercontent.com/lvgl/lvgl/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/header.py&script=https://raw.githubusercontent.com/lvgl/lvgl/8ee00aa4f1f249aac44028f5ed2af10980b6cbdd/examples/scroll/lv_example_scroll_6.py'><i class="fa fa-play"></i>&nbsp;MicroPython Simulator</a></div>
<div class="highlight-py notranslate"><div class="highlight"><pre><span></span><span class="k">def</span> <span class="nf">scroll_event_cb</span><span class="p">(</span><span class="n">e</span><span class="p">):</span>
<span class="n">cont</span> <span class="o">=</span> <span class="n">e</span><span class="o">.</span><span class="n">get_target_obj</span><span class="p">()</span>
<span class="n">cont_a</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">area_t</span><span class="p">()</span>
<span class="n">cont</span><span class="o">.</span><span class="n">get_coords</span><span class="p">(</span><span class="n">cont_a</span><span class="p">)</span>
<span class="n">cont_y_center</span> <span class="o">=</span> <span class="n">cont_a</span><span class="o">.</span><span class="n">y1</span> <span class="o">+</span> <span class="n">cont_a</span><span class="o">.</span><span class="n">get_height</span><span class="p">()</span> <span class="o">//</span> <span class="mi">2</span>
<span class="n">r</span> <span class="o">=</span> <span class="n">cont</span><span class="o">.</span><span class="n">get_height</span><span class="p">()</span> <span class="o">*</span> <span class="mi">7</span> <span class="o">//</span> <span class="mi">10</span>
<span class="n">child_cnt</span> <span class="o">=</span> <span class="n">cont</span><span class="o">.</span><span class="n">get_child_cnt</span><span class="p">()</span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">child_cnt</span><span class="p">):</span>
<span class="n">child</span> <span class="o">=</span> <span class="n">cont</span><span class="o">.</span><span class="n">get_child</span><span class="p">(</span><span class="n">i</span><span class="p">)</span>
<span class="n">child_a</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">area_t</span><span class="p">()</span>
<span class="n">child</span><span class="o">.</span><span class="n">get_coords</span><span class="p">(</span><span class="n">child_a</span><span class="p">)</span>
<span class="n">child_y_center</span> <span class="o">=</span> <span class="n">child_a</span><span class="o">.</span><span class="n">y1</span> <span class="o">+</span> <span class="n">child_a</span><span class="o">.</span><span class="n">get_height</span><span class="p">()</span> <span class="o">//</span> <span class="mi">2</span>
<span class="n">diff_y</span> <span class="o">=</span> <span class="n">child_y_center</span> <span class="o">-</span> <span class="n">cont_y_center</span>
<span class="n">diff_y</span> <span class="o">=</span> <span class="nb">abs</span><span class="p">(</span><span class="n">diff_y</span><span class="p">)</span>
<span class="c1"># Get the x of diff_y on a circle.</span>
<span class="c1"># If diff_y is out of the circle use the last point of the circle (the radius)</span>
<span class="k">if</span> <span class="n">diff_y</span> <span class="o">&gt;=</span> <span class="n">r</span><span class="p">:</span>
<span class="n">x</span> <span class="o">=</span> <span class="n">r</span>
<span class="k">else</span><span class="p">:</span>
<span class="c1"># Use Pythagoras theorem to get x from radius and y</span>
<span class="n">x_sqr</span> <span class="o">=</span> <span class="n">r</span> <span class="o">*</span> <span class="n">r</span> <span class="o">-</span> <span class="n">diff_y</span> <span class="o">*</span> <span class="n">diff_y</span>
<span class="n">res</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">sqrt_res_t</span><span class="p">()</span>
<span class="n">lv</span><span class="o">.</span><span class="n">sqrt</span><span class="p">(</span><span class="n">x_sqr</span><span class="p">,</span> <span class="n">res</span><span class="p">,</span> <span class="mh">0x8000</span><span class="p">)</span> <span class="c1"># Use lvgl&#39;s built in sqrt root function</span>
<span class="n">x</span> <span class="o">=</span> <span class="n">r</span> <span class="o">-</span> <span class="n">res</span><span class="o">.</span><span class="n">i</span>
<span class="c1"># Translate the item by the calculated X coordinate</span>
<span class="n">child</span><span class="o">.</span><span class="n">set_style_translate_x</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
<span class="c1"># Use some opacity with larger translations</span>
<span class="n">opa</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">map</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">r</span><span class="p">,</span> <span class="n">lv</span><span class="o">.</span><span class="n">OPA</span><span class="o">.</span><span class="n">TRANSP</span><span class="p">,</span> <span class="n">lv</span><span class="o">.</span><span class="n">OPA</span><span class="o">.</span><span class="n">COVER</span><span class="p">)</span>
<span class="n">child</span><span class="o">.</span><span class="n">set_style_opa</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">OPA</span><span class="o">.</span><span class="n">COVER</span> <span class="o">-</span> <span class="n">opa</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
<span class="c1">#</span>
<span class="c1"># Translate the object as they scroll</span>
<span class="c1">#</span>
<span class="n">cont</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">obj</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">screen_active</span><span class="p">())</span>
<span class="n">cont</span><span class="o">.</span><span class="n">set_size</span><span class="p">(</span><span class="mi">200</span><span class="p">,</span> <span class="mi">200</span><span class="p">)</span>
<span class="n">cont</span><span class="o">.</span><span class="n">center</span><span class="p">()</span>
<span class="n">cont</span><span class="o">.</span><span class="n">set_flex_flow</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">FLEX_FLOW</span><span class="o">.</span><span class="n">COLUMN</span><span class="p">)</span>
<span class="n">cont</span><span class="o">.</span><span class="n">add_event</span><span class="p">(</span><span class="n">scroll_event_cb</span><span class="p">,</span> <span class="n">lv</span><span class="o">.</span><span class="n">EVENT</span><span class="o">.</span><span class="n">SCROLL</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="n">cont</span><span class="o">.</span><span class="n">set_style_radius</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">RADIUS_CIRCLE</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
<span class="n">cont</span><span class="o">.</span><span class="n">set_style_clip_corner</span><span class="p">(</span><span class="kc">True</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
<span class="n">cont</span><span class="o">.</span><span class="n">set_scroll_dir</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">DIR</span><span class="o">.</span><span class="n">VER</span><span class="p">)</span>
<span class="n">cont</span><span class="o">.</span><span class="n">set_scroll_snap_y</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">SCROLL_SNAP</span><span class="o">.</span><span class="n">CENTER</span><span class="p">)</span>
<span class="n">cont</span><span class="o">.</span><span class="n">set_scrollbar_mode</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">SCROLLBAR_MODE</span><span class="o">.</span><span class="n">OFF</span><span class="p">)</span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">20</span><span class="p">):</span>
<span class="n">button</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">button</span><span class="p">(</span><span class="n">cont</span><span class="p">)</span>
<span class="n">button</span><span class="o">.</span><span class="n">set_width</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">pct</span><span class="p">(</span><span class="mi">100</span><span class="p">))</span>
<span class="n">label</span> <span class="o">=</span> <span class="n">lv</span><span class="o">.</span><span class="n">label</span><span class="p">(</span><span class="n">button</span><span class="p">)</span>
<span class="n">label</span><span class="o">.</span><span class="n">set_text</span><span class="p">(</span><span class="s2">&quot;Button &quot;</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">i</span><span class="p">))</span>
<span class="c1"># Update the buttons position manually for first*</span>
<span class="n">cont</span><span class="o">.</span><span class="n">send_event</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">EVENT</span><span class="o">.</span><span class="n">SCROLL</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="c1"># Be sure the fist button is in the middle</span>
<span class="c1">#lv.obj.scroll_to_view(cont.get_child(0), lv.ANIM.OFF)</span>
<span class="n">cont</span><span class="o">.</span><span class="n">get_child</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span><span class="o">.</span><span class="n">scroll_to_view</span><span class="p">(</span><span class="n">lv</span><span class="o">.</span><span class="n">ANIM</span><span class="o">.</span><span class="n">OFF</span><span class="p">)</span>
</pre></div>
</div>
</div>
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</section>
<section id="api">
<h2>API<a class="headerlink" href="#api" title="Link to this heading"></a></h2>
<p><a class="reference internal" href="../API/core/lv_obj_scroll.html#lv-obj-scroll"><span class="std std-ref">lv_obj_scroll.h</span></a></p>
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