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https://github.com/lvgl/lvgl.git
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91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
/**
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* @file lv_refr.h
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*
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*/
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#ifndef LV_REFR_H
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#define LV_REFR_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#include "lv_obj.h"
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#include <stdbool.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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/**********************
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* STATIC PROTOTYPES
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**********************/
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/**********************
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* STATIC VARIABLES
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**********************/
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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/**
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* Initialize the screen refresh subsystem
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*/
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void lv_refr_init(void);
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/**
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* Redraw the invalidated areas now.
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* Normally the redrawing is periodically executed in `lv_task_handler` but a long blocking process can
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* prevent the call of `lv_task_handler`. In this case if the the GUI is updated in the process (e.g. progress bar)
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* this function can be called when the screen should be updated.
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*/
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void lv_refr_now(void);
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/**
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* Invalidate an area on display to redraw it
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* @param area_p pointer to area which should be invalidated (NULL: delete the invalidated areas)
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* @param disp pointer to display where the area should be invalidated (NULL can be used if there is only one display)
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*/
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void lv_inv_area(lv_disp_t * disp, const lv_area_t * area_p);
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/**
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* Get the number of areas in the buffer
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* @return number of invalid areas
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*/
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uint16_t lv_refr_get_buf_size(void);
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/**
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* Pop (delete) the last 'num' invalidated areas from the buffer
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* @param num number of areas to delete
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*/
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void lv_refr_pop_from_buf(uint16_t num);
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/**
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* Get the display which is being refreshed
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* @return the display being refreshed
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*/
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lv_disp_t * lv_refr_get_disp_refreshing(void);
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/**********************
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* STATIC FUNCTIONS
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**********************/
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /*LV_REFR_H*/
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