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60 lines
1.2 KiB
ReStructuredText
60 lines
1.2 KiB
ReStructuredText
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LED (lv_led)
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============
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Overview
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********
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The LEDs are rectangle-like (or circle) object whose brightness can be
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adjusted. With lower brightness the colors of the LED become darker.
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Parts and Styles
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****************
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The LEDs have only one main part, called :cpp:enumerator:`LV_LED_PART_MAIN` and it
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uses all the typical background style properties.
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Usage
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*****
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Color
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-----
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You can set the color of the LED with
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:cpp:expr:`lv_led_set_color(led, lv_color_hex(0xff0080))`. This will be used as
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background color, border color, and shadow color.
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Brightness
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----------
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You can set their brightness with :cpp:expr:`lv_led_set_bright(led, bright)`.
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The brightness should be between 0 (darkest) and 255 (lightest).
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Toggle
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------
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Use :cpp:expr:`lv_led_on(led)` and :cpp:expr:`lv_led_off(led)` to set the brightness to
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a predefined ON or OFF value. The :cpp:expr:`lv_led_toggle(led)` toggles between
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the ON and OFF state.
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Events
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******
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See the events of the `Base object </widgets/obj>`__ too.
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Learn more about :ref:`events`.
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Keys
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****
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No *Keys* are processed by the object type.
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Learn more about :ref:`indev_keys`.
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Example
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*******
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.. include:: ../examples/widgets/led/index.rst
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API
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***
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