1 /**
2 * @file lv_draw_mask.c
3 *
4 */
5
6 /*********************
7 * INCLUDES
8 *********************/
9 #include "lv_draw_mask_private.h"
10 #include "lv_draw_private.h"
11 #include "../core/lv_refr.h"
12 #include "../misc/lv_math.h"
13 #include "../misc/lv_types.h"
14 #include "../stdlib/lv_string.h"
15
16 /*********************
17 * DEFINES
18 *********************/
19
20 /**********************
21 * TYPEDEFS
22 **********************/
23
24 /**********************
25 * STATIC PROTOTYPES
26 **********************/
27
28 /**********************
29 * STATIC VARIABLES
30 **********************/
31
32 /**********************
33 * MACROS
34 **********************/
35
36 /**********************
37 * GLOBAL FUNCTIONS
38 **********************/
39
lv_draw_mask_rect_dsc_init(lv_draw_mask_rect_dsc_t * dsc)40 void LV_ATTRIBUTE_FAST_MEM lv_draw_mask_rect_dsc_init(lv_draw_mask_rect_dsc_t * dsc)
41 {
42 lv_memzero(dsc, sizeof(lv_draw_mask_rect_dsc_t));
43 }
44
lv_draw_task_get_mask_rect_dsc(lv_draw_task_t * task)45 lv_draw_mask_rect_dsc_t * lv_draw_task_get_mask_rect_dsc(lv_draw_task_t * task)
46 {
47 return task->type == LV_DRAW_TASK_TYPE_MASK_RECTANGLE ? (lv_draw_mask_rect_dsc_t *)task->draw_dsc : NULL;
48 }
49
lv_draw_mask_rect(lv_layer_t * layer,const lv_draw_mask_rect_dsc_t * dsc)50 void LV_ATTRIBUTE_FAST_MEM lv_draw_mask_rect(lv_layer_t * layer, const lv_draw_mask_rect_dsc_t * dsc)
51 {
52 if(!lv_color_format_has_alpha(layer->color_format)) {
53 LV_LOG_WARN("Only layers with alpha channel can be masked");
54 return;
55 }
56 LV_PROFILER_DRAW_BEGIN;
57
58 lv_draw_task_t * t = lv_draw_add_task(layer, &layer->buf_area);
59
60 t->draw_dsc = lv_malloc(sizeof(*dsc));
61 LV_ASSERT_MALLOC(t->draw_dsc);
62 lv_memcpy(t->draw_dsc, dsc, sizeof(*dsc));
63 t->type = LV_DRAW_TASK_TYPE_MASK_RECTANGLE;
64
65 lv_draw_dsc_base_t * base_dsc = t->draw_dsc;
66 base_dsc->layer = layer;
67
68 if(base_dsc->obj && lv_obj_has_flag(base_dsc->obj, LV_OBJ_FLAG_SEND_DRAW_TASK_EVENTS)) {
69 /*Disable sending LV_EVENT_DRAW_TASK_ADDED first to avoid triggering recursive
70 *event calls due draw task adds in the event*/
71 lv_obj_remove_flag(base_dsc->obj, LV_OBJ_FLAG_SEND_DRAW_TASK_EVENTS);
72 lv_obj_send_event(dsc->base.obj, LV_EVENT_DRAW_TASK_ADDED, t);
73 lv_obj_add_flag(base_dsc->obj, LV_OBJ_FLAG_SEND_DRAW_TASK_EVENTS);
74 }
75
76 lv_draw_finalize_task_creation(layer, t);
77 LV_PROFILER_DRAW_END;
78 }
79
80 /**********************
81 * STATIC FUNCTIONS
82 **********************/
83
