acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
lv_draw_arc.h (2507B)
      1 /**
      2  * @file lv_draw_arc.h
      3  *
      4  */
      5 
      6 #ifndef LV_DRAW_ARC_H
      7 #define LV_DRAW_ARC_H
      8 
      9 #ifdef __cplusplus
     10 extern "C" {
     11 #endif
     12 
     13 /*********************
     14  *      INCLUDES
     15  *********************/
     16 #include "../lv_conf_internal.h"
     17 #include "../misc/lv_color.h"
     18 #include "../misc/lv_area.h"
     19 #include "../misc/lv_style.h"
     20 
     21 /*********************
     22  *      DEFINES
     23  *********************/
     24 
     25 /**********************
     26  *      TYPEDEFS
     27  **********************/
     28 typedef struct {
     29     lv_color_t color;
     30     lv_coord_t width;
     31     uint16_t start_angle;
     32     uint16_t end_angle;
     33     const void * img_src;
     34     lv_opa_t opa;
     35     lv_blend_mode_t blend_mode  : 2;
     36     uint8_t rounded : 1;
     37 } lv_draw_arc_dsc_t;
     38 
     39 struct _lv_draw_ctx_t;
     40 
     41 /**********************
     42  * GLOBAL PROTOTYPES
     43  **********************/
     44 
     45 void lv_draw_arc_dsc_init(lv_draw_arc_dsc_t * dsc);
     46 
     47 /**
     48  * Draw an arc. (Can draw pie too with great thickness.)
     49  * @param center_x      the x coordinate of the center of the arc
     50  * @param center_y      the y coordinate of the center of the arc
     51  * @param radius        the radius of the arc
     52  * @param mask          the arc will be drawn only in this mask
     53  * @param start_angle   the start angle of the arc (0 deg on the bottom, 90 deg on the right)
     54  * @param end_angle     the end angle of the arc
     55  * @param clip_area     the arc will be drawn only in this area
     56  * @param dsc           pointer to an initialized `lv_draw_line_dsc_t` variable
     57  */
     58 void lv_draw_arc(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center,
     59                  uint16_t radius,  uint16_t start_angle, uint16_t end_angle);
     60 
     61 /**
     62  * Get an area the should be invalidated when the arcs angle changed between start_angle and end_ange
     63  * @param x             the x coordinate of the center of the arc
     64  * @param y             the y coordinate of the center of the arc
     65  * @param radius        the radius of the arc
     66  * @param start_angle   the start angle of the arc (0 deg on the bottom, 90 deg on the right)
     67  * @param end_angle     the end angle of the arc
     68  * @param w             width of the arc
     69  * @param rounded       true: the arc is rounded
     70  * @param area          store the area to invalidate here
     71  */
     72 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,
     73                           lv_coord_t w, bool rounded, lv_area_t * area);
     74 
     75 /**********************
     76  *      MACROS
     77  **********************/
     78 
     79 #ifdef __cplusplus
     80 } /*extern "C"*/
     81 #endif
     82 
     83 #endif /*LV_DRAW_ARC_H*/