84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/**
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* @file lv_draw_arc.h
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*
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*/
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#ifndef LV_DRAW_ARC_H
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#define LV_DRAW_ARC_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_conf_internal.h"
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#include "../misc/lv_color.h"
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#include "../misc/lv_area.h"
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#include "../misc/lv_style.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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typedef struct {
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lv_color_t color;
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lv_coord_t width;
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uint16_t start_angle;
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uint16_t end_angle;
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const void * img_src;
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lv_opa_t opa;
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lv_blend_mode_t blend_mode : 2;
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uint8_t rounded : 1;
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} lv_draw_arc_dsc_t;
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struct _lv_draw_ctx_t;
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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void lv_draw_arc_dsc_init(lv_draw_arc_dsc_t * dsc);
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/**
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* Draw an arc. (Can draw pie too with great thickness.)
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* @param center_x the x coordinate of the center of the arc
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* @param center_y the y coordinate of the center of the arc
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* @param radius the radius of the arc
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* @param mask the arc will be drawn only in this mask
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* @param start_angle the start angle of the arc (0 deg on the bottom, 90 deg on the right)
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* @param end_angle the end angle of the arc
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* @param clip_area the arc will be drawn only in this area
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* @param dsc pointer to an initialized `lv_draw_line_dsc_t` variable
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*/
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void lv_draw_arc(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center,
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uint16_t radius, uint16_t start_angle, uint16_t end_angle);
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/**
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* Get an area the should be invalidated when the arcs angle changed between start_angle and end_ange
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* @param x the x coordinate of the center of the arc
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* @param y the y coordinate of the center of the arc
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* @param radius the radius of the arc
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* @param start_angle the start angle of the arc (0 deg on the bottom, 90 deg on the right)
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* @param end_angle the end angle of the arc
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* @param w width of the arc
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* @param rounded true: the arc is rounded
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* @param area store the area to invalidate here
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*/
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void lv_draw_arc_get_area(lv_coord_t x, lv_coord_t y, uint16_t radius, uint16_t start_angle, uint16_t end_angle,
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lv_coord_t w, bool rounded, lv_area_t * area);
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/**********************
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* MACROS
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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_DRAW_ARC_H*/
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