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84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
/**
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* @file lv_slider.h
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*
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*/
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#ifndef LV_SLIDER_H
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#define LV_SLIDER_H
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/*********************
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* INCLUDES
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*********************/
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#include "lv_conf.h"
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#if USE_LV_SLIDER != 0
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#include "../lv_obj/lv_obj.h"
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#include "lv_bar.h"
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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/*Data of slider*/
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typedef struct
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{
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lv_bar_ext_t bar; /*Ext. of ancestor*/
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/*New data for this type */
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lv_action_t cb; /*Function to call when a new value is set*/
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int16_t tmp_value; /*Store temporal value during press until release (Handled by the library)*/
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}lv_slider_ext_t;
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/*Style of slider*/
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typedef struct
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{
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lv_bars_t bar; /*Style of ancestor*/
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/*New style element for this type */
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lv_rects_t knob; /*Style of the knob*/
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}lv_sliders_t;
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/*Built-in styles of slider*/
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typedef enum
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{
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LV_SLIDERS_DEF,
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}lv_sliders_builtin_t;
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/**
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* Create a slider objects
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* @param par pointer to an object, it will be the parent of the new slider
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* @param copy pointer to a slider object, if not NULL then the new object will be copied from it
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* @return pointer to the created slider
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*/
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lv_obj_t * lv_slider_create(lv_obj_t * par, lv_obj_t * copy);
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/**
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* Signal function of the slider
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* @param slider pointer to a slider object
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* @param sign a signal type from lv_signal_t enum
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* @param param pointer to a signal specific variable
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* @return true: the object is still valid (not deleted), false: the object become invalid
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*/
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bool lv_slider_signal(lv_obj_t * slider, lv_signal_t sign, void * param);
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/**
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* Return with a pointer to a built-in style and/or copy it to a variable
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* @param style a style name from lv_sliders_builtin_t enum
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* @param copy copy the style to this variable. (NULL if unused)
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* @return pointer to an lv_sliders_t style
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*/
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lv_sliders_t * lv_sliders_get(lv_sliders_builtin_t style, lv_sliders_t * copy);
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/**********************
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* MACROS
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**********************/
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#endif
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#endif
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