1 /**
2 * @file lv_draw_vg_lite_rect.c
3 *
4 */
5
6 /*********************
7 * INCLUDES
8 *********************/
9
10 #include "../../misc/lv_area_private.h"
11 #include "../sw/lv_draw_sw_mask_private.h"
12 #include "../lv_draw_mask_private.h"
13 #include "lv_draw_vg_lite.h"
14
15 #if LV_USE_DRAW_VG_LITE
16
17 #include "lv_vg_lite_utils.h"
18 #include "lv_draw_vg_lite_type.h"
19 #include "lv_vg_lite_path.h"
20
21 /*********************
22 * DEFINES
23 *********************/
24
25 /**********************
26 * TYPEDEFS
27 **********************/
28
29 /**********************
30 * STATIC PROTOTYPES
31 **********************/
32
33 /**********************
34 * STATIC VARIABLES
35 **********************/
36
37 /**********************
38 * MACROS
39 **********************/
40
41 /**********************
42 * GLOBAL FUNCTIONS
43 **********************/
44
lv_draw_vg_lite_mask_rect(lv_draw_unit_t * draw_unit,const lv_draw_mask_rect_dsc_t * dsc,const lv_area_t * coords)45 void lv_draw_vg_lite_mask_rect(lv_draw_unit_t * draw_unit, const lv_draw_mask_rect_dsc_t * dsc,
46 const lv_area_t * coords)
47 {
48 LV_UNUSED(coords);
49
50 lv_area_t draw_area;
51 if(!lv_area_intersect(&draw_area, &dsc->area, draw_unit->clip_area)) {
52 return;
53 }
54
55 LV_PROFILER_DRAW_BEGIN;
56
57 #if LV_USE_VG_LITE_THORVG
58 /**
59 * ThorVG does not yet support simulating the VG_LITE_BLEND_DST_IN blend mode,
60 * and uses software rendering to achieve this
61 */
62 lv_layer_t * target_layer = draw_unit->target_layer;
63 const lv_area_t * buf_area = &target_layer->buf_area;
64 lv_area_t clear_area;
65
66 lv_draw_buf_t * draw_buf = target_layer->draw_buf;
67
68 /*Clear the top part*/
69 lv_area_set(&clear_area, draw_unit->clip_area->x1, draw_unit->clip_area->y1, draw_unit->clip_area->x2,
70 dsc->area.y1 - 1);
71 lv_area_move(&clear_area, -buf_area->x1, -buf_area->y1);
72 lv_draw_buf_clear(draw_buf, &clear_area);
73
74 /*Clear the bottom part*/
75 lv_area_set(&clear_area, draw_unit->clip_area->x1, dsc->area.y2 + 1, draw_unit->clip_area->x2,
76 draw_unit->clip_area->y2);
77 lv_area_move(&clear_area, -buf_area->x1, -buf_area->y1);
78 lv_draw_buf_clear(draw_buf, &clear_area);
79
80 /*Clear the left part*/
81 lv_area_set(&clear_area, draw_unit->clip_area->x1, dsc->area.y1, dsc->area.x1 - 1, dsc->area.y2);
82 lv_area_move(&clear_area, -buf_area->x1, -buf_area->y1);
83 lv_draw_buf_clear(draw_buf, &clear_area);
84
85 /*Clear the right part*/
86 lv_area_set(&clear_area, dsc->area.x2 + 1, dsc->area.y1, draw_unit->clip_area->x2, dsc->area.y2);
87 lv_area_move(&clear_area, -buf_area->x1, -buf_area->y1);
88 lv_draw_buf_clear(draw_buf, &clear_area);
89
90 lv_draw_sw_mask_radius_param_t param;
91 lv_draw_sw_mask_radius_init(¶m, &dsc->area, dsc->radius, false);
92
93 void * masks[2] = {0};
94 masks[0] = ¶m;
95
96 uint32_t area_w = lv_area_get_width(&draw_area);
97 lv_opa_t * mask_buf = lv_malloc(area_w);
98
99 int32_t y;
100 for(y = draw_area.y1; y <= draw_area.y2; y++) {
101 lv_memset(mask_buf, 0xff, area_w);
102 lv_draw_sw_mask_res_t res = lv_draw_sw_mask_apply(masks, mask_buf, draw_area.x1, y, area_w);
103 if(res == LV_DRAW_SW_MASK_RES_FULL_COVER) continue;
104
105 lv_color32_t * c32_buf = lv_draw_layer_go_to_xy(target_layer, draw_area.x1 - target_layer->buf_area.x1,
106 y - target_layer->buf_area.y1);
107
108 if(res == LV_DRAW_SW_MASK_RES_TRANSP) {
109 lv_memzero(c32_buf, area_w * sizeof(lv_color32_t));
110 }
111 else {
112 uint32_t i;
113 for(i = 0; i < area_w; i++) {
114 if(mask_buf[i] != LV_OPA_COVER) {
115 c32_buf[i].alpha = LV_OPA_MIX2(c32_buf[i].alpha, mask_buf[i]);
116 }
117
118 /*Pre-multiply the alpha*/
119 lv_color_premultiply(&c32_buf[i]);
120 }
121 }
122 }
123
124 lv_free(mask_buf);
125 lv_draw_sw_mask_free_param(¶m);
126 #else
127 /* Using hardware rendering masks */
128 lv_draw_vg_lite_unit_t * u = (lv_draw_vg_lite_unit_t *)draw_unit;
129
130 lv_vg_lite_path_t * path = lv_vg_lite_path_get(u, VG_LITE_FP32);
131 lv_vg_lite_path_set_bounding_box_area(path, draw_unit->clip_area);
132
133 /* Nesting cropping regions using rounded rectangles and normal rectangles */
134 lv_vg_lite_path_append_rect(
135 path,
136 dsc->area.x1, dsc->area.y1,
137 lv_area_get_width(&dsc->area), lv_area_get_height(&dsc->area),
138 dsc->radius);
139 lv_vg_lite_path_append_rect(
140 path,
141 draw_unit->clip_area->x1, draw_unit->clip_area->y1,
142 lv_area_get_width(draw_unit->clip_area), lv_area_get_height(draw_unit->clip_area),
143 0);
144 lv_vg_lite_path_end(path);
145
146 vg_lite_path_t * vg_lite_path = lv_vg_lite_path_get_path(path);
147
148 vg_lite_matrix_t matrix = u->global_matrix;
149
150 LV_VG_LITE_ASSERT_DEST_BUFFER(&u->target_buffer);
151 LV_VG_LITE_ASSERT_PATH(vg_lite_path);
152 LV_VG_LITE_ASSERT_MATRIX(&matrix);
153
154 /* Use VG_LITE_BLEND_DST_IN (Sa * D) blending mode to make the corners transparent */
155 LV_PROFILER_DRAW_BEGIN_TAG("vg_lite_draw");
156 LV_VG_LITE_CHECK_ERROR(vg_lite_draw(
157 &u->target_buffer,
158 vg_lite_path,
159 VG_LITE_FILL_EVEN_ODD,
160 &matrix,
161 VG_LITE_BLEND_DST_IN,
162 0));
163 LV_PROFILER_DRAW_END_TAG("vg_lite_draw");
164
165 lv_vg_lite_path_drop(u, path);
166 #endif /*LV_USE_VG_LITE_THORVG*/
167
168 LV_PROFILER_DRAW_END;
169 }
170
171 /**********************
172 * STATIC FUNCTIONS
173 **********************/
174
175 #endif /*LV_USE_DRAW_VG_LITE*/
176
