1 /**
2 * @file lv_draw_rect.c
3 *
4 */
5
6 /*********************
7 * INCLUDES
8 *********************/
9 #include "lv_draw_sw.h"
10 #include "../../misc/lv_math.h"
11 #include "../../misc/lv_txt_ap.h"
12 #include "../../core/lv_refr.h"
13 #include "../../misc/lv_assert.h"
14 #include "lv_draw_sw_dither.h"
15
16 /*********************
17 * DEFINES
18 *********************/
19 #define SHADOW_UPSCALE_SHIFT 6
20 #define SHADOW_ENHANCE 1
21 #define SPLIT_LIMIT 50
22
23
24 /**********************
25 * TYPEDEFS
26 **********************/
27
28 /**********************
29 * STATIC PROTOTYPES
30 **********************/
31 static void draw_bg(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
32 static void draw_bg_img(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
33 static void draw_border(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
34
35 static void draw_outline(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
36
37 #if LV_DRAW_COMPLEX
38 LV_ATTRIBUTE_FAST_MEM static void draw_shadow(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc,
39 const lv_area_t * coords);
40 LV_ATTRIBUTE_FAST_MEM static void shadow_draw_corner_buf(const lv_area_t * coords, uint16_t * sh_buf, lv_coord_t s,
41 lv_coord_t r);
42 LV_ATTRIBUTE_FAST_MEM static void shadow_blur_corner(lv_coord_t size, lv_coord_t sw, uint16_t * sh_ups_buf);
43 #endif
44
45 void draw_border_generic(lv_draw_ctx_t * draw_ctx, const lv_area_t * outer_area, const lv_area_t * inner_area,
46 lv_coord_t rout, lv_coord_t rin, lv_color_t color, lv_opa_t opa, lv_blend_mode_t blend_mode);
47
48 static void draw_border_simple(lv_draw_ctx_t * draw_ctx, const lv_area_t * outer_area, const lv_area_t * inner_area,
49 lv_color_t color, lv_opa_t opa);
50
51
52 /**********************
53 * STATIC VARIABLES
54 **********************/
55 #if defined(LV_SHADOW_CACHE_SIZE) && LV_SHADOW_CACHE_SIZE > 0
56 static uint8_t sh_cache[LV_SHADOW_CACHE_SIZE * LV_SHADOW_CACHE_SIZE];
57 static int32_t sh_cache_size = -1;
58 static int32_t sh_cache_r = -1;
59 #endif
60
61 /**********************
62 * MACROS
63 **********************/
64
65 /**********************
66 * GLOBAL FUNCTIONS
67 **********************/
68
lv_draw_sw_rect(lv_draw_ctx_t * draw_ctx,const lv_draw_rect_dsc_t * dsc,const lv_area_t * coords)69 void lv_draw_sw_rect(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords)
70 {
71 #if LV_DRAW_COMPLEX
72 draw_shadow(draw_ctx, dsc, coords);
73 #endif
74
75 draw_bg(draw_ctx, dsc, coords);
76 draw_bg_img(draw_ctx, dsc, coords);
77
78 draw_border(draw_ctx, dsc, coords);
79
80 draw_outline(draw_ctx, dsc, coords);
81
82 LV_ASSERT_MEM_INTEGRITY();
83 }
84
lv_draw_sw_bg(lv_draw_ctx_t * draw_ctx,const lv_draw_rect_dsc_t * dsc,const lv_area_t * coords)85 void lv_draw_sw_bg(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords)
86 {
87 #if LV_COLOR_SCREEN_TRANSP && LV_COLOR_DEPTH == 32
88 lv_memset_00(draw_ctx->buf, lv_area_get_size(draw_ctx->buf_area) * sizeof(lv_color_t));
89 #endif
90
91 draw_bg(draw_ctx, dsc, coords);
92 draw_bg_img(draw_ctx, dsc, coords);
93 }
94
95
96 /**********************
97 * STATIC FUNCTIONS
98 **********************/
99
draw_bg(lv_draw_ctx_t * draw_ctx,const lv_draw_rect_dsc_t * dsc,const lv_area_t * coords)100 static void draw_bg(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords)
101 {
102 if(dsc->bg_opa <= LV_OPA_MIN) return;
103
104 lv_area_t bg_coords;
105 lv_area_copy(&bg_coords, coords);
106
107 /*If the border fully covers make the bg area 1px smaller to avoid artifacts on the corners*/
108 if(dsc->border_width > 1 && dsc->border_opa >= LV_OPA_MAX && dsc->radius != 0) {
109 bg_coords.x1 += (dsc->border_side & LV_BORDER_SIDE_LEFT) ? 1 : 0;
110 bg_coords.y1 += (dsc->border_side & LV_BORDER_SIDE_TOP) ? 1 : 0;
111 bg_coords.x2 -= (dsc->border_side & LV_BORDER_SIDE_RIGHT) ? 1 : 0;
112 bg_coords.y2 -= (dsc->border_side & LV_BORDER_SIDE_BOTTOM) ? 1 : 0;
113 }
114
115 lv_area_t clipped_coords;
116 if(!_lv_area_intersect(&clipped_coords, &bg_coords, draw_ctx->clip_area)) return;
117
118 lv_grad_dir_t grad_dir = dsc->bg_grad.dir;
119 lv_color_t bg_color = grad_dir == LV_GRAD_DIR_NONE ? dsc->bg_color : dsc->bg_grad.stops[0].color;
120 if(bg_color.full == dsc->bg_grad.stops[1].color.full) grad_dir = LV_GRAD_DIR_NONE;
121
122 bool mask_any = lv_draw_mask_is_any(&bg_coords);
123 lv_draw_sw_blend_dsc_t blend_dsc = {0};
124 blend_dsc.blend_mode = dsc->blend_mode;
125 blend_dsc.color = bg_color;
126
127 /*Most simple case: just a plain rectangle*/
128 if(!mask_any && dsc->radius == 0 && (grad_dir == LV_GRAD_DIR_NONE)) {
129 blend_dsc.blend_area = &bg_coords;
130 blend_dsc.opa = dsc->bg_opa;
131
132 lv_draw_sw_blend(draw_ctx, &blend_dsc);
133 return;
134 }
135
136 /*Complex case: there is gradient, mask, or radius*/
137 #if LV_DRAW_COMPLEX == 0
138 LV_LOG_WARN("Can't draw complex rectangle because LV_DRAW_COMPLEX = 0");
139 #else
140 lv_opa_t opa = dsc->bg_opa >= LV_OPA_MAX ? LV_OPA_COVER : dsc->bg_opa;
141
142 /*Get the real radius. Can't be larger than the half of the shortest side */
143 lv_coord_t coords_bg_w = lv_area_get_width(&bg_coords);
144 lv_coord_t coords_bg_h = lv_area_get_height(&bg_coords);
145 int32_t short_side = LV_MIN(coords_bg_w, coords_bg_h);
146 int32_t rout = LV_MIN(dsc->radius, short_side >> 1);
147
148 /*Add a radius mask if there is radius*/
149 int32_t clipped_w = lv_area_get_width(&clipped_coords);
150 int16_t mask_rout_id = LV_MASK_ID_INV;
151 lv_opa_t * mask_buf = NULL;
152 lv_draw_mask_radius_param_t mask_rout_param;
153 if(rout > 0 || mask_any) {
154 mask_buf = lv_mem_buf_get(clipped_w);
155 lv_draw_mask_radius_init(&mask_rout_param, &bg_coords, rout, false);
156 mask_rout_id = lv_draw_mask_add(&mask_rout_param, NULL);
157 }
158
159 int32_t h;
160
161 lv_area_t blend_area;
162 blend_area.x1 = clipped_coords.x1;
163 blend_area.x2 = clipped_coords.x2;
164
165 blend_dsc.mask_buf = mask_buf;
166 blend_dsc.blend_area = &blend_area;
167 blend_dsc.mask_area = &blend_area;
168 blend_dsc.opa = LV_OPA_COVER;
169
170
171 /*Get gradient if appropriate*/
172 lv_grad_t * grad = lv_gradient_get(&dsc->bg_grad, coords_bg_w, coords_bg_h);
173 if(grad && grad_dir == LV_GRAD_DIR_HOR) {
174 blend_dsc.src_buf = grad->map + clipped_coords.x1 - bg_coords.x1;
175 }
176
177 #if _DITHER_GRADIENT
178 lv_dither_mode_t dither_mode = dsc->bg_grad.dither;
179 lv_dither_func_t dither_func = &lv_dither_none;
180 lv_coord_t grad_size = coords_bg_w;
181 if(grad_dir == LV_GRAD_DIR_VER && dither_mode != LV_DITHER_NONE) {
182 /* When dithering, we are still using a map that's changing from line to line*/
183 blend_dsc.src_buf = grad->map;
184 }
185
186 if(grad && dither_mode == LV_DITHER_NONE) {
187 grad->filled = 0; /*Should we force refilling it each draw call ?*/
188 if(grad_dir == LV_GRAD_DIR_VER)
189 grad_size = coords_bg_h;
190 }
191 else
192 #if LV_DITHER_ERROR_DIFFUSION
193 if(dither_mode == LV_DITHER_ORDERED)
194 #endif
195 switch(grad_dir) {
196 case LV_GRAD_DIR_HOR:
197 dither_func = lv_dither_ordered_hor;
198 break;
199 case LV_GRAD_DIR_VER:
200 dither_func = lv_dither_ordered_ver;
201 break;
202 default:
203 dither_func = NULL;
204 }
205
206 #if LV_DITHER_ERROR_DIFFUSION
207 else if(dither_mode == LV_DITHER_ERR_DIFF)
208 switch(grad_dir) {
209 case LV_GRAD_DIR_HOR:
210 dither_func = lv_dither_err_diff_hor;
211 break;
212 case LV_GRAD_DIR_VER:
213 dither_func = lv_dither_err_diff_ver;
214 break;
215 default:
216 dither_func = NULL;
217 }
218 #endif
219 #endif
220
221 /*There is another mask too. Draw line by line. */
222 if(mask_any) {
223 for(h = clipped_coords.y1; h <= clipped_coords.y2; h++) {
224 blend_area.y1 = h;
225 blend_area.y2 = h;
226
227 /* Initialize the mask to opa instead of 0xFF and blend with LV_OPA_COVER.
228 * It saves calculating the final opa in lv_draw_sw_blend*/
229 lv_memset(mask_buf, opa, clipped_w);
230 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, clipped_coords.x1, h, clipped_w);
231 if(blend_dsc.mask_res == LV_DRAW_MASK_RES_FULL_COVER) blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
232
233 #if _DITHER_GRADIENT
234 if(dither_func) dither_func(grad, blend_area.x1, h - bg_coords.y1, grad_size);
235 #endif
236 if(grad_dir == LV_GRAD_DIR_VER) blend_dsc.color = grad->map[h - bg_coords.y1];
237 lv_draw_sw_blend(draw_ctx, &blend_dsc);
238 }
239 goto bg_clean_up;
240 }
241
242
243 /* Draw the top of the rectangle line by line and mirror it to the bottom. */
244 for(h = 0; h < rout; h++) {
245 lv_coord_t top_y = bg_coords.y1 + h;
246 lv_coord_t bottom_y = bg_coords.y2 - h;
247 if(top_y < clipped_coords.y1 && bottom_y > clipped_coords.y2) continue; /*This line is clipped now*/
248
249 /* Initialize the mask to opa instead of 0xFF and blend with LV_OPA_COVER.
250 * It saves calculating the final opa in lv_draw_sw_blend*/
251 lv_memset(mask_buf, opa, clipped_w);
252 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, blend_area.x1, top_y, clipped_w);
253 if(blend_dsc.mask_res == LV_DRAW_MASK_RES_FULL_COVER) blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
254
255 if(top_y >= clipped_coords.y1) {
256 blend_area.y1 = top_y;
257 blend_area.y2 = top_y;
258
259 #if _DITHER_GRADIENT
260 if(dither_func) dither_func(grad, blend_area.x1, top_y - bg_coords.y1, grad_size);
261 #endif
262 if(grad_dir == LV_GRAD_DIR_VER) blend_dsc.color = grad->map[top_y - bg_coords.y1];
263 lv_draw_sw_blend(draw_ctx, &blend_dsc);
264 }
265
266 if(bottom_y <= clipped_coords.y2) {
267 blend_area.y1 = bottom_y;
268 blend_area.y2 = bottom_y;
269
270 #if _DITHER_GRADIENT
271 if(dither_func) dither_func(grad, blend_area.x1, bottom_y - bg_coords.y1, grad_size);
272 #endif
273 if(grad_dir == LV_GRAD_DIR_VER) blend_dsc.color = grad->map[bottom_y - bg_coords.y1];
274 lv_draw_sw_blend(draw_ctx, &blend_dsc);
275 }
276 }
277
278 /* Draw the center of the rectangle.*/
279
280 /*If no other masks and no gradient, the center is a simple rectangle*/
281 lv_area_t center_coords;
282 center_coords.x1 = bg_coords.x1;
283 center_coords.x2 = bg_coords.x2;
284 center_coords.y1 = bg_coords.y1 + rout;
285 center_coords.y2 = bg_coords.y2 - rout;
286 bool mask_any_center = lv_draw_mask_is_any(¢er_coords);
287 if(!mask_any_center && grad_dir == LV_GRAD_DIR_NONE) {
288 blend_area.y1 = bg_coords.y1 + rout;
289 blend_area.y2 = bg_coords.y2 - rout;
290 blend_dsc.opa = opa;
291 blend_dsc.mask_buf = NULL;
292 lv_draw_sw_blend(draw_ctx, &blend_dsc);
293 }
294 /*With gradient and/or mask draw line by line*/
295 else {
296 blend_dsc.opa = opa;
297 blend_dsc.mask_res = LV_DRAW_MASK_RES_FULL_COVER;
298 int32_t h_end = bg_coords.y2 - rout;
299 for(h = bg_coords.y1 + rout; h <= h_end; h++) {
300 /*If there is no other mask do not apply mask as in the center there is no radius to mask*/
301 if(mask_any_center) {
302 lv_memset(mask_buf, opa, clipped_w);
303 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, clipped_coords.x1, h, clipped_w);
304 }
305
306 blend_area.y1 = h;
307 blend_area.y2 = h;
308
309 #if _DITHER_GRADIENT
310 if(dither_func) dither_func(grad, blend_area.x1, h - bg_coords.y1, grad_size);
311 #endif
312 if(grad_dir == LV_GRAD_DIR_VER) blend_dsc.color = grad->map[h - bg_coords.y1];
313 lv_draw_sw_blend(draw_ctx, &blend_dsc);
314 }
315 }
316
317
318 bg_clean_up:
319 if(mask_buf) lv_mem_buf_release(mask_buf);
320 if(mask_rout_id != LV_MASK_ID_INV) {
321 lv_draw_mask_remove_id(mask_rout_id);
322 lv_draw_mask_free_param(&mask_rout_param);
323 }
324 if(grad) {
325 lv_gradient_cleanup(grad);
326 }
327
328 #endif
329 }
330
draw_bg_img(lv_draw_ctx_t * draw_ctx,const lv_draw_rect_dsc_t * dsc,const lv_area_t * coords)331 static void draw_bg_img(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords)
332 {
333 if(dsc->bg_img_src == NULL) return;
334 if(dsc->bg_img_opa <= LV_OPA_MIN) return;
335
336 lv_img_src_t src_type = lv_img_src_get_type(dsc->bg_img_src);
337 if(src_type == LV_IMG_SRC_SYMBOL) {
338 lv_point_t size;
339 lv_txt_get_size(&size, dsc->bg_img_src, dsc->bg_img_symbol_font, 0, 0, LV_COORD_MAX, LV_TEXT_FLAG_NONE);
340 lv_area_t a;
341 a.x1 = coords->x1 + lv_area_get_width(coords) / 2 - size.x / 2;
342 a.x2 = a.x1 + size.x - 1;
343 a.y1 = coords->y1 + lv_area_get_height(coords) / 2 - size.y / 2;
344 a.y2 = a.y1 + size.y - 1;
345
346 lv_draw_label_dsc_t label_draw_dsc;
347 lv_draw_label_dsc_init(&label_draw_dsc);
348 label_draw_dsc.font = dsc->bg_img_symbol_font;
349 label_draw_dsc.color = dsc->bg_img_recolor;
350 label_draw_dsc.opa = dsc->bg_img_opa;
351 lv_draw_label(draw_ctx, &label_draw_dsc, &a, dsc->bg_img_src, NULL);
352 }
353 else {
354 lv_img_header_t header;
355 lv_res_t res = lv_img_decoder_get_info(dsc->bg_img_src, &header);
356 if(res != LV_RES_OK) {
357 LV_LOG_WARN("Couldn't read the background image");
358 return;
359 }
360
361 lv_draw_img_dsc_t img_dsc;
362 lv_draw_img_dsc_init(&img_dsc);
363 img_dsc.blend_mode = dsc->blend_mode;
364 img_dsc.recolor = dsc->bg_img_recolor;
365 img_dsc.recolor_opa = dsc->bg_img_recolor_opa;
366 img_dsc.opa = dsc->bg_img_opa;
367
368 /*Center align*/
369 if(dsc->bg_img_tiled == false) {
370 lv_area_t area;
371 area.x1 = coords->x1 + lv_area_get_width(coords) / 2 - header.w / 2;
372 area.y1 = coords->y1 + lv_area_get_height(coords) / 2 - header.h / 2;
373 area.x2 = area.x1 + header.w - 1;
374 area.y2 = area.y1 + header.h - 1;
375
376 lv_draw_img(draw_ctx, &img_dsc, &area, dsc->bg_img_src);
377 }
378 else {
379 lv_area_t area;
380 area.y1 = coords->y1;
381 area.y2 = area.y1 + header.h - 1;
382
383 for(; area.y1 <= coords->y2; area.y1 += header.h, area.y2 += header.h) {
384
385 area.x1 = coords->x1;
386 area.x2 = area.x1 + header.w - 1;
387 for(; area.x1 <= coords->x2; area.x1 += header.w, area.x2 += header.w) {
388 lv_draw_img(draw_ctx, &img_dsc, &area, dsc->bg_img_src);
389 }
390 }
391 }
392 }
393 }
394
draw_border(lv_draw_ctx_t * draw_ctx,const lv_draw_rect_dsc_t * dsc,const lv_area_t * coords)395 static void draw_border(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords)
396 {
397 if(dsc->border_opa <= LV_OPA_MIN) return;
398 if(dsc->border_width == 0) return;
399 if(dsc->border_side == LV_BORDER_SIDE_NONE) return;
400 if(dsc->border_post) return;
401
402 int32_t coords_w = lv_area_get_width(coords);
403 int32_t coords_h = lv_area_get_height(coords);
404 int32_t rout = dsc->radius;
405 int32_t short_side = LV_MIN(coords_w, coords_h);
406 if(rout > short_side >> 1) rout = short_side >> 1;
407
408 /*Get the inner area*/
409 lv_area_t area_inner;
410 lv_area_copy(&area_inner, coords);
411 area_inner.x1 += ((dsc->border_side & LV_BORDER_SIDE_LEFT) ? dsc->border_width : - (dsc->border_width + rout));
412 area_inner.x2 -= ((dsc->border_side & LV_BORDER_SIDE_RIGHT) ? dsc->border_width : - (dsc->border_width + rout));
413 area_inner.y1 += ((dsc->border_side & LV_BORDER_SIDE_TOP) ? dsc->border_width : - (dsc->border_width + rout));
414 area_inner.y2 -= ((dsc->border_side & LV_BORDER_SIDE_BOTTOM) ? dsc->border_width : - (dsc->border_width + rout));
415
416 lv_coord_t rin = rout - dsc->border_width;
417 if(rin < 0) rin = 0;
418
419 draw_border_generic(draw_ctx, coords, &area_inner, rout, rin, dsc->border_color, dsc->border_opa, dsc->blend_mode);
420
421 }
422
423 #if LV_DRAW_COMPLEX
draw_shadow(lv_draw_ctx_t * draw_ctx,const lv_draw_rect_dsc_t * dsc,const lv_area_t * coords)424 LV_ATTRIBUTE_FAST_MEM static void draw_shadow(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc,
425 const lv_area_t * coords)
426 {
427 /*Check whether the shadow is visible*/
428 if(dsc->shadow_width == 0) return;
429 if(dsc->shadow_opa <= LV_OPA_MIN) return;
430
431 if(dsc->shadow_width == 1 && dsc->shadow_spread <= 0 &&
432 dsc->shadow_ofs_x == 0 && dsc->shadow_ofs_y == 0) {
433 return;
434 }
435
436 /*Calculate the rectangle which is blurred to get the shadow in `shadow_area`*/
437 lv_area_t core_area;
438 core_area.x1 = coords->x1 + dsc->shadow_ofs_x - dsc->shadow_spread;
439 core_area.x2 = coords->x2 + dsc->shadow_ofs_x + dsc->shadow_spread;
440 core_area.y1 = coords->y1 + dsc->shadow_ofs_y - dsc->shadow_spread;
441 core_area.y2 = coords->y2 + dsc->shadow_ofs_y + dsc->shadow_spread;
442
443 /*Calculate the bounding box of the shadow*/
444 lv_area_t shadow_area;
445 shadow_area.x1 = core_area.x1 - dsc->shadow_width / 2 - 1;
446 shadow_area.x2 = core_area.x2 + dsc->shadow_width / 2 + 1;
447 shadow_area.y1 = core_area.y1 - dsc->shadow_width / 2 - 1;
448 shadow_area.y2 = core_area.y2 + dsc->shadow_width / 2 + 1;
449
450 lv_opa_t opa = dsc->shadow_opa;
451 if(opa > LV_OPA_MAX) opa = LV_OPA_COVER;
452
453 /*Get clipped draw area which is the real draw area.
454 *It is always the same or inside `shadow_area`*/
455 lv_area_t draw_area;
456 if(!_lv_area_intersect(&draw_area, &shadow_area, draw_ctx->clip_area)) return;
457
458 /*Consider 1 px smaller bg to be sure the edge will be covered by the shadow*/
459 lv_area_t bg_area;
460 lv_area_copy(&bg_area, coords);
461 lv_area_increase(&bg_area, -1, -1);
462
463 /*Get the clamped radius*/
464 int32_t r_bg = dsc->radius;
465 lv_coord_t short_side = LV_MIN(lv_area_get_width(&bg_area), lv_area_get_height(&bg_area));
466 if(r_bg > short_side >> 1) r_bg = short_side >> 1;
467
468 /*Get the clamped radius*/
469 int32_t r_sh = dsc->radius;
470 short_side = LV_MIN(lv_area_get_width(&core_area), lv_area_get_height(&core_area));
471 if(r_sh > short_side >> 1) r_sh = short_side >> 1;
472
473
474 /*Get how many pixels are affected by the blur on the corners*/
475 int32_t corner_size = dsc->shadow_width + r_sh;
476
477 lv_opa_t * sh_buf;
478
479 #if LV_SHADOW_CACHE_SIZE
480 if(sh_cache_size == corner_size && sh_cache_r == r_sh) {
481 /*Use the cache if available*/
482 sh_buf = lv_mem_buf_get(corner_size * corner_size);
483 lv_memcpy(sh_buf, sh_cache, corner_size * corner_size);
484 }
485 else {
486 /*A larger buffer is required for calculation*/
487 sh_buf = lv_mem_buf_get(corner_size * corner_size * sizeof(uint16_t));
488 shadow_draw_corner_buf(&core_area, (uint16_t *)sh_buf, dsc->shadow_width, r_sh);
489
490 /*Cache the corner if it fits into the cache size*/
491 if((uint32_t)corner_size * corner_size < sizeof(sh_cache)) {
492 lv_memcpy(sh_cache, sh_buf, corner_size * corner_size);
493 sh_cache_size = corner_size;
494 sh_cache_r = r_sh;
495 }
496 }
497 #else
498 sh_buf = lv_mem_buf_get(corner_size * corner_size * sizeof(uint16_t));
499 shadow_draw_corner_buf(&core_area, (uint16_t *)sh_buf, dsc->shadow_width, r_sh);
500 #endif
501
502 /*Skip a lot of masking if the background will cover the shadow that would be masked out*/
503 bool mask_any = lv_draw_mask_is_any(&shadow_area);
504 bool simple = true;
505 if(mask_any || dsc->bg_opa < LV_OPA_COVER || dsc->blend_mode != LV_BLEND_MODE_NORMAL) simple = false;
506
507 /*Create a radius mask to clip remove shadow on the bg area*/
508
509 lv_draw_mask_radius_param_t mask_rout_param;
510 int16_t mask_rout_id = LV_MASK_ID_INV;
511 if(!simple) {
512 lv_draw_mask_radius_init(&mask_rout_param, &bg_area, r_bg, true);
513 mask_rout_id = lv_draw_mask_add(&mask_rout_param, NULL);
514 }
515 lv_opa_t * mask_buf = lv_mem_buf_get(lv_area_get_width(&shadow_area));
516 lv_area_t blend_area;
517 lv_area_t clip_area_sub;
518 lv_opa_t * sh_buf_tmp;
519 lv_coord_t y;
520 bool simple_sub;
521
522 lv_draw_sw_blend_dsc_t blend_dsc;
523 lv_memset_00(&blend_dsc, sizeof(blend_dsc));
524 blend_dsc.blend_area = &blend_area;
525 blend_dsc.mask_area = &blend_area;
526 blend_dsc.mask_buf = mask_buf;
527 blend_dsc.color = dsc->shadow_color;
528 blend_dsc.opa = dsc->shadow_opa;
529 blend_dsc.blend_mode = dsc->blend_mode;
530
531 lv_coord_t w_half = shadow_area.x1 + lv_area_get_width(&shadow_area) / 2;
532 lv_coord_t h_half = shadow_area.y1 + lv_area_get_height(&shadow_area) / 2;
533
534 /*Draw the corners if they are on the current clip area and not fully covered by the bg*/
535
536 /*Top right corner*/
537 blend_area.x2 = shadow_area.x2;
538 blend_area.x1 = shadow_area.x2 - corner_size + 1;
539 blend_area.y1 = shadow_area.y1;
540 blend_area.y2 = shadow_area.y1 + corner_size - 1;
541 /*Do not overdraw the other top corners*/
542 blend_area.x1 = LV_MAX(blend_area.x1, w_half);
543 blend_area.y2 = LV_MIN(blend_area.y2, h_half);
544
545 if(_lv_area_intersect(&clip_area_sub, &blend_area, draw_ctx->clip_area) &&
546 !_lv_area_is_in(&clip_area_sub, &bg_area, r_bg)) {
547 lv_coord_t w = lv_area_get_width(&clip_area_sub);
548 sh_buf_tmp = sh_buf;
549 sh_buf_tmp += (clip_area_sub.y1 - shadow_area.y1) * corner_size;
550 sh_buf_tmp += clip_area_sub.x1 - (shadow_area.x2 - corner_size + 1);
551
552 /*Do not mask if out of the bg*/
553 if(simple && _lv_area_is_out(&clip_area_sub, &bg_area, r_bg)) simple_sub = true;
554 else simple_sub = simple;
555 if(w > 0) {
556 blend_dsc.mask_buf = mask_buf;
557 blend_area.x1 = clip_area_sub.x1;
558 blend_area.x2 = clip_area_sub.x2;
559 blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED; /*In simple mode it won't be overwritten*/
560 for(y = clip_area_sub.y1; y <= clip_area_sub.y2; y++) {
561 blend_area.y1 = y;
562 blend_area.y2 = y;
563
564 if(!simple_sub) {
565 lv_memcpy(mask_buf, sh_buf_tmp, corner_size);
566 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, clip_area_sub.x1, y, w);
567 if(blend_dsc.mask_res == LV_DRAW_MASK_RES_FULL_COVER) blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
568 }
569 else {
570 blend_dsc.mask_buf = sh_buf_tmp;
571 }
572 lv_draw_sw_blend(draw_ctx, &blend_dsc);
573 sh_buf_tmp += corner_size;
574 }
575 }
576 }
577
578 /*Bottom right corner.
579 *Almost the same as top right just read the lines of `sh_buf` from then end*/
580 blend_area.x2 = shadow_area.x2;
581 blend_area.x1 = shadow_area.x2 - corner_size + 1;
582 blend_area.y1 = shadow_area.y2 - corner_size + 1;
583 blend_area.y2 = shadow_area.y2;
584 /*Do not overdraw the other corners*/
585 blend_area.x1 = LV_MAX(blend_area.x1, w_half);
586 blend_area.y1 = LV_MAX(blend_area.y1, h_half + 1);
587
588 if(_lv_area_intersect(&clip_area_sub, &blend_area, draw_ctx->clip_area) &&
589 !_lv_area_is_in(&clip_area_sub, &bg_area, r_bg)) {
590 lv_coord_t w = lv_area_get_width(&clip_area_sub);
591 sh_buf_tmp = sh_buf;
592 sh_buf_tmp += (blend_area.y2 - clip_area_sub.y2) * corner_size;
593 sh_buf_tmp += clip_area_sub.x1 - (shadow_area.x2 - corner_size + 1);
594 /*Do not mask if out of the bg*/
595 if(simple && _lv_area_is_out(&clip_area_sub, &bg_area, r_bg)) simple_sub = true;
596 else simple_sub = simple;
597
598 if(w > 0) {
599 blend_dsc.mask_buf = mask_buf;
600 blend_area.x1 = clip_area_sub.x1;
601 blend_area.x2 = clip_area_sub.x2;
602 blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED; /*In simple mode it won't be overwritten*/
603 for(y = clip_area_sub.y2; y >= clip_area_sub.y1; y--) {
604 blend_area.y1 = y;
605 blend_area.y2 = y;
606
607 if(!simple_sub) {
608 lv_memcpy(mask_buf, sh_buf_tmp, corner_size);
609 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, clip_area_sub.x1, y, w);
610 if(blend_dsc.mask_res == LV_DRAW_MASK_RES_FULL_COVER) blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
611 }
612 else {
613 blend_dsc.mask_buf = sh_buf_tmp;
614 }
615 lv_draw_sw_blend(draw_ctx, &blend_dsc);
616 sh_buf_tmp += corner_size;
617 }
618 }
619 }
620
621 /*Top side*/
622 blend_area.x1 = shadow_area.x1 + corner_size;
623 blend_area.x2 = shadow_area.x2 - corner_size;
624 blend_area.y1 = shadow_area.y1;
625 blend_area.y2 = shadow_area.y1 + corner_size - 1;
626 blend_area.y2 = LV_MIN(blend_area.y2, h_half);
627
628 if(_lv_area_intersect(&clip_area_sub, &blend_area, draw_ctx->clip_area) &&
629 !_lv_area_is_in(&clip_area_sub, &bg_area, r_bg)) {
630 lv_coord_t w = lv_area_get_width(&clip_area_sub);
631 sh_buf_tmp = sh_buf;
632 sh_buf_tmp += (clip_area_sub.y1 - blend_area.y1) * corner_size;
633
634 /*Do not mask if out of the bg*/
635 if(simple && _lv_area_is_out(&clip_area_sub, &bg_area, r_bg)) simple_sub = true;
636 else simple_sub = simple;
637
638 if(w > 0) {
639 if(!simple_sub) {
640 blend_dsc.mask_buf = mask_buf;
641 }
642 else {
643 blend_dsc.mask_buf = NULL;
644 }
645 blend_area.x1 = clip_area_sub.x1;
646 blend_area.x2 = clip_area_sub.x2;
647
648 for(y = clip_area_sub.y1; y <= clip_area_sub.y2; y++) {
649 blend_area.y1 = y;
650 blend_area.y2 = y;
651
652 if(!simple_sub) {
653 lv_memset(mask_buf, sh_buf_tmp[0], w);
654 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, clip_area_sub.x1, y, w);
655 if(blend_dsc.mask_res == LV_DRAW_MASK_RES_FULL_COVER) blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
656 lv_draw_sw_blend(draw_ctx, &blend_dsc);
657 }
658 else {
659 blend_dsc.opa = opa == LV_OPA_COVER ? sh_buf_tmp[0] : (sh_buf_tmp[0] * dsc->shadow_opa) >> 8;
660 lv_draw_sw_blend(draw_ctx, &blend_dsc);
661 }
662 sh_buf_tmp += corner_size;
663 }
664 }
665 }
666 blend_dsc.opa = dsc->shadow_opa; /*Restore*/
667
668 /*Bottom side*/
669 blend_area.x1 = shadow_area.x1 + corner_size;
670 blend_area.x2 = shadow_area.x2 - corner_size;
671 blend_area.y1 = shadow_area.y2 - corner_size + 1;
672 blend_area.y2 = shadow_area.y2;
673 blend_area.y1 = LV_MAX(blend_area.y1, h_half + 1);
674
675
676 if(_lv_area_intersect(&clip_area_sub, &blend_area, draw_ctx->clip_area) &&
677 !_lv_area_is_in(&clip_area_sub, &bg_area, r_bg)) {
678 lv_coord_t w = lv_area_get_width(&clip_area_sub);
679 sh_buf_tmp = sh_buf;
680 sh_buf_tmp += (blend_area.y2 - clip_area_sub.y2) * corner_size;
681 if(w > 0) {
682 /*Do not mask if out of the bg*/
683 if(simple && _lv_area_is_out(&clip_area_sub, &bg_area, r_bg)) simple_sub = true;
684 else simple_sub = simple;
685
686 if(!simple_sub) {
687 blend_dsc.mask_buf = mask_buf;
688 }
689 else {
690 blend_dsc.mask_buf = NULL;
691 }
692 blend_area.x1 = clip_area_sub.x1;
693 blend_area.x2 = clip_area_sub.x2;
694
695 for(y = clip_area_sub.y2; y >= clip_area_sub.y1; y--) {
696 blend_area.y1 = y;
697 blend_area.y2 = y;
698
699 /*Do not mask if out of the bg*/
700 if(simple && _lv_area_is_out(&clip_area_sub, &bg_area, r_bg)) simple_sub = true;
701 else simple_sub = simple;
702
703 if(!simple_sub) {
704 lv_memset(mask_buf, sh_buf_tmp[0], w);
705 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, clip_area_sub.x1, y, w);
706 if(blend_dsc.mask_res == LV_DRAW_MASK_RES_FULL_COVER) blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
707 lv_draw_sw_blend(draw_ctx, &blend_dsc);
708 }
709 else {
710 blend_dsc.opa = opa == LV_OPA_COVER ? sh_buf_tmp[0] : (sh_buf_tmp[0] * dsc->shadow_opa) >> 8;
711 lv_draw_sw_blend(draw_ctx, &blend_dsc);
712
713 }
714 sh_buf_tmp += corner_size;
715 }
716 }
717 }
718
719 blend_dsc.opa = dsc->shadow_opa; /*Restore*/
720
721 /*Right side*/
722 blend_area.x1 = shadow_area.x2 - corner_size + 1;
723 blend_area.x2 = shadow_area.x2;
724 blend_area.y1 = shadow_area.y1 + corner_size;
725 blend_area.y2 = shadow_area.y2 - corner_size;
726 /*Do not overdraw the other corners*/
727 blend_area.y1 = LV_MIN(blend_area.y1, h_half + 1);
728 blend_area.y2 = LV_MAX(blend_area.y2, h_half);
729 blend_area.x1 = LV_MAX(blend_area.x1, w_half);
730
731 if(_lv_area_intersect(&clip_area_sub, &blend_area, draw_ctx->clip_area) &&
732 !_lv_area_is_in(&clip_area_sub, &bg_area, r_bg)) {
733 lv_coord_t w = lv_area_get_width(&clip_area_sub);
734 sh_buf_tmp = sh_buf;
735 sh_buf_tmp += (corner_size - 1) * corner_size;
736 sh_buf_tmp += clip_area_sub.x1 - (shadow_area.x2 - corner_size + 1);
737
738 /*Do not mask if out of the bg*/
739 if(simple && _lv_area_is_out(&clip_area_sub, &bg_area, r_bg)) simple_sub = true;
740 else simple_sub = simple;
741 blend_dsc.mask_buf = simple_sub ? sh_buf_tmp : mask_buf;
742
743 if(w > 0) {
744 blend_area.x1 = clip_area_sub.x1;
745 blend_area.x2 = clip_area_sub.x2;
746 blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED; /*In simple mode it won't be overwritten*/
747 for(y = clip_area_sub.y1; y <= clip_area_sub.y2; y++) {
748 blend_area.y1 = y;
749 blend_area.y2 = y;
750
751 if(!simple_sub) {
752 lv_memcpy(mask_buf, sh_buf_tmp, w);
753 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, clip_area_sub.x1, y, w);
754 if(blend_dsc.mask_res == LV_DRAW_MASK_RES_FULL_COVER) blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
755 }
756 lv_draw_sw_blend(draw_ctx, &blend_dsc);
757 }
758 }
759 }
760
761 /*Mirror the shadow corner buffer horizontally*/
762 sh_buf_tmp = sh_buf ;
763 for(y = 0; y < corner_size; y++) {
764 int32_t x;
765 lv_opa_t * start = sh_buf_tmp;
766 lv_opa_t * end = sh_buf_tmp + corner_size - 1;
767 for(x = 0; x < corner_size / 2; x++) {
768 lv_opa_t tmp = *start;
769 *start = *end;
770 *end = tmp;
771
772 start++;
773 end--;
774 }
775 sh_buf_tmp += corner_size;
776 }
777
778 /*Left side*/
779 blend_area.x1 = shadow_area.x1;
780 blend_area.x2 = shadow_area.x1 + corner_size - 1;
781 blend_area.y1 = shadow_area.y1 + corner_size;
782 blend_area.y2 = shadow_area.y2 - corner_size;
783 /*Do not overdraw the other corners*/
784 blend_area.y1 = LV_MIN(blend_area.y1, h_half + 1);
785 blend_area.y2 = LV_MAX(blend_area.y2, h_half);
786 blend_area.x2 = LV_MIN(blend_area.x2, w_half - 1);
787
788 if(_lv_area_intersect(&clip_area_sub, &blend_area, draw_ctx->clip_area) &&
789 !_lv_area_is_in(&clip_area_sub, &bg_area, r_bg)) {
790 lv_coord_t w = lv_area_get_width(&clip_area_sub);
791 sh_buf_tmp = sh_buf;
792 sh_buf_tmp += (corner_size - 1) * corner_size;
793 sh_buf_tmp += clip_area_sub.x1 - blend_area.x1;
794
795 /*Do not mask if out of the bg*/
796 if(simple && _lv_area_is_out(&clip_area_sub, &bg_area, r_bg)) simple_sub = true;
797 else simple_sub = simple;
798 blend_dsc.mask_buf = simple_sub ? sh_buf_tmp : mask_buf;
799 if(w > 0) {
800 blend_area.x1 = clip_area_sub.x1;
801 blend_area.x2 = clip_area_sub.x2;
802 blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED; /*In simple mode it won't be overwritten*/
803 for(y = clip_area_sub.y1; y <= clip_area_sub.y2; y++) {
804 blend_area.y1 = y;
805 blend_area.y2 = y;
806
807 if(!simple_sub) {
808 lv_memcpy(mask_buf, sh_buf_tmp, w);
809 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, clip_area_sub.x1, y, w);
810 if(blend_dsc.mask_res == LV_DRAW_MASK_RES_FULL_COVER) blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
811 }
812
813 lv_draw_sw_blend(draw_ctx, &blend_dsc);
814 }
815 }
816 }
817
818 /*Top left corner*/
819 blend_area.x1 = shadow_area.x1;
820 blend_area.x2 = shadow_area.x1 + corner_size - 1;
821 blend_area.y1 = shadow_area.y1;
822 blend_area.y2 = shadow_area.y1 + corner_size - 1;
823 /*Do not overdraw the other corners*/
824 blend_area.x2 = LV_MIN(blend_area.x2, w_half - 1);
825 blend_area.y2 = LV_MIN(blend_area.y2, h_half);
826
827 if(_lv_area_intersect(&clip_area_sub, &blend_area, draw_ctx->clip_area) &&
828 !_lv_area_is_in(&clip_area_sub, &bg_area, r_bg)) {
829 lv_coord_t w = lv_area_get_width(&clip_area_sub);
830 sh_buf_tmp = sh_buf;
831 sh_buf_tmp += (clip_area_sub.y1 - blend_area.y1) * corner_size;
832 sh_buf_tmp += clip_area_sub.x1 - blend_area.x1;
833
834 /*Do not mask if out of the bg*/
835 if(simple && _lv_area_is_out(&clip_area_sub, &bg_area, r_bg)) simple_sub = true;
836 else simple_sub = simple;
837 blend_dsc.mask_buf = mask_buf;
838
839 if(w > 0) {
840 blend_area.x1 = clip_area_sub.x1;
841 blend_area.x2 = clip_area_sub.x2;
842 blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED; /*In simple mode it won't be overwritten*/
843 for(y = clip_area_sub.y1; y <= clip_area_sub.y2; y++) {
844 blend_area.y1 = y;
845 blend_area.y2 = y;
846
847 if(!simple_sub) {
848 lv_memcpy(mask_buf, sh_buf_tmp, corner_size);
849 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, clip_area_sub.x1, y, w);
850 if(blend_dsc.mask_res == LV_DRAW_MASK_RES_FULL_COVER) blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
851 }
852 else {
853 blend_dsc.mask_buf = sh_buf_tmp;
854 }
855
856 lv_draw_sw_blend(draw_ctx, &blend_dsc);
857 sh_buf_tmp += corner_size;
858 }
859 }
860 }
861
862 /*Bottom left corner.
863 *Almost the same as bottom right just read the lines of `sh_buf` from then end*/
864 blend_area.x1 = shadow_area.x1 ;
865 blend_area.x2 = shadow_area.x1 + corner_size - 1;
866 blend_area.y1 = shadow_area.y2 - corner_size + 1;
867 blend_area.y2 = shadow_area.y2;
868 /*Do not overdraw the other corners*/
869 blend_area.y1 = LV_MAX(blend_area.y1, h_half + 1);
870 blend_area.x2 = LV_MIN(blend_area.x2, w_half - 1);
871
872 if(_lv_area_intersect(&clip_area_sub, &blend_area, draw_ctx->clip_area) &&
873 !_lv_area_is_in(&clip_area_sub, &bg_area, r_bg)) {
874 lv_coord_t w = lv_area_get_width(&clip_area_sub);
875 sh_buf_tmp = sh_buf;
876 sh_buf_tmp += (blend_area.y2 - clip_area_sub.y2) * corner_size;
877 sh_buf_tmp += clip_area_sub.x1 - blend_area.x1;
878
879 /*Do not mask if out of the bg*/
880 if(simple && _lv_area_is_out(&clip_area_sub, &bg_area, r_bg)) simple_sub = true;
881 else simple_sub = simple;
882 blend_dsc.mask_buf = mask_buf;
883 if(w > 0) {
884 blend_area.x1 = clip_area_sub.x1;
885 blend_area.x2 = clip_area_sub.x2;
886 blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED; /*In simple mode it won't be overwritten*/
887 for(y = clip_area_sub.y2; y >= clip_area_sub.y1; y--) {
888 blend_area.y1 = y;
889 blend_area.y2 = y;
890
891 if(!simple_sub) {
892 lv_memcpy(mask_buf, sh_buf_tmp, corner_size);
893 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, clip_area_sub.x1, y, w);
894 if(blend_dsc.mask_res == LV_DRAW_MASK_RES_FULL_COVER) blend_dsc.mask_res = LV_DRAW_MASK_RES_CHANGED;
895 }
896 else {
897 blend_dsc.mask_buf = sh_buf_tmp;
898 }
899 lv_draw_sw_blend(draw_ctx, &blend_dsc);
900 sh_buf_tmp += corner_size;
901 }
902 }
903 }
904
905 /*Draw the center rectangle.*/
906 blend_area.x1 = shadow_area.x1 + corner_size ;
907 blend_area.x2 = shadow_area.x2 - corner_size;
908 blend_area.y1 = shadow_area.y1 + corner_size;
909 blend_area.y2 = shadow_area.y2 - corner_size;
910 blend_dsc.mask_buf = mask_buf;
911
912 if(_lv_area_intersect(&clip_area_sub, &blend_area, draw_ctx->clip_area) &&
913 !_lv_area_is_in(&clip_area_sub, &bg_area, r_bg)) {
914 lv_coord_t w = lv_area_get_width(&clip_area_sub);
915 if(w > 0) {
916 blend_area.x1 = clip_area_sub.x1;
917 blend_area.x2 = clip_area_sub.x2;
918 for(y = clip_area_sub.y1; y <= clip_area_sub.y2; y++) {
919 blend_area.y1 = y;
920 blend_area.y2 = y;
921
922 lv_memset_ff(mask_buf, w);
923 blend_dsc.mask_res = lv_draw_mask_apply(mask_buf, clip_area_sub.x1, y, w);
924 lv_draw_sw_blend(draw_ctx, &blend_dsc);
925 }
926 }
927 }
928
929 if(!simple) {
930 lv_draw_mask_free_param(&mask_rout_param);
931 lv_draw_mask_remove_id(mask_rout_id);
932 }
933 lv_mem_buf_release(sh_buf);
934 lv_mem_buf_release(mask_buf);
935 }
936
937 /**
938 * Calculate a blurred corner
939 * @param coords Coordinates of the shadow
940 * @param sh_buf a buffer to store the result. Its size should be `(sw + r)^2 * 2`
941 * @param sw shadow width
942 * @param r radius
943 */
shadow_draw_corner_buf(const lv_area_t * coords,uint16_t * sh_buf,lv_coord_t sw,lv_coord_t r)944 LV_ATTRIBUTE_FAST_MEM static void shadow_draw_corner_buf(const lv_area_t * coords, uint16_t * sh_buf, lv_coord_t sw,
945 lv_coord_t r)
946 {
947 int32_t sw_ori = sw;
948 int32_t size = sw_ori + r;
949
950 lv_area_t sh_area;
951 lv_area_copy(&sh_area, coords);
952 sh_area.x2 = sw / 2 + r - 1 - ((sw & 1) ? 0 : 1);
953 sh_area.y1 = sw / 2 + 1;
954
955 sh_area.x1 = sh_area.x2 - lv_area_get_width(coords);
956 sh_area.y2 = sh_area.y1 + lv_area_get_height(coords);
957
958 lv_draw_mask_radius_param_t mask_param;
959 lv_draw_mask_radius_init(&mask_param, &sh_area, r, false);
960
961 #if SHADOW_ENHANCE
962 /*Set half shadow width width because blur will be repeated*/
963 if(sw_ori == 1) sw = 1;
964 else sw = sw_ori >> 1;
965 #endif
966
967 int32_t y;
968 lv_opa_t * mask_line = lv_mem_buf_get(size);
969 uint16_t * sh_ups_tmp_buf = (uint16_t *)sh_buf;
970 for(y = 0; y < size; y++) {
971 lv_memset_ff(mask_line, size);
972 lv_draw_mask_res_t mask_res = mask_param.dsc.cb(mask_line, 0, y, size, &mask_param);
973 if(mask_res == LV_DRAW_MASK_RES_TRANSP) {
974 lv_memset_00(sh_ups_tmp_buf, size * sizeof(sh_ups_tmp_buf[0]));
975 }
976 else {
977 int32_t i;
978 sh_ups_tmp_buf[0] = (mask_line[0] << SHADOW_UPSCALE_SHIFT) / sw;
979 for(i = 1; i < size; i++) {
980 if(mask_line[i] == mask_line[i - 1]) sh_ups_tmp_buf[i] = sh_ups_tmp_buf[i - 1];
981 else sh_ups_tmp_buf[i] = (mask_line[i] << SHADOW_UPSCALE_SHIFT) / sw;
982 }
983 }
984
985 sh_ups_tmp_buf += size;
986 }
987 lv_mem_buf_release(mask_line);
988
989 lv_draw_mask_free_param(&mask_param);
990
991 if(sw == 1) {
992 int32_t i;
993 lv_opa_t * res_buf = (lv_opa_t *)sh_buf;
994 for(i = 0; i < size * size; i++) {
995 res_buf[i] = (sh_buf[i] >> SHADOW_UPSCALE_SHIFT);
996 }
997 return;
998 }
999
1000 shadow_blur_corner(size, sw, sh_buf);
1001
1002 #if SHADOW_ENHANCE == 0
1003 /*The result is required in lv_opa_t not uint16_t*/
1004 uint32_t x;
1005 lv_opa_t * res_buf = (lv_opa_t *)sh_buf;
1006 for(x = 0; x < size * size; x++) {
1007 res_buf[x] = sh_buf[x];
1008 }
1009 #else
1010 sw += sw_ori & 1;
1011 if(sw > 1) {
1012 uint32_t i;
1013 uint32_t max_v_div = (LV_OPA_COVER << SHADOW_UPSCALE_SHIFT) / sw;
1014 for(i = 0; i < (uint32_t)size * size; i++) {
1015 if(sh_buf[i] == 0) continue;
1016 else if(sh_buf[i] == LV_OPA_COVER) sh_buf[i] = max_v_div;
1017 else sh_buf[i] = (sh_buf[i] << SHADOW_UPSCALE_SHIFT) / sw;
1018 }
1019
1020 shadow_blur_corner(size, sw, sh_buf);
1021 }
1022 int32_t x;
1023 lv_opa_t * res_buf = (lv_opa_t *)sh_buf;
1024 for(x = 0; x < size * size; x++) {
1025 res_buf[x] = sh_buf[x];
1026 }
1027 #endif
1028
1029 }
1030
shadow_blur_corner(lv_coord_t size,lv_coord_t sw,uint16_t * sh_ups_buf)1031 LV_ATTRIBUTE_FAST_MEM static void shadow_blur_corner(lv_coord_t size, lv_coord_t sw, uint16_t * sh_ups_buf)
1032 {
1033 int32_t s_left = sw >> 1;
1034 int32_t s_right = (sw >> 1);
1035 if((sw & 1) == 0) s_left--;
1036
1037 /*Horizontal blur*/
1038 uint16_t * sh_ups_blur_buf = lv_mem_buf_get(size * sizeof(uint16_t));
1039
1040 int32_t x;
1041 int32_t y;
1042
1043 uint16_t * sh_ups_tmp_buf = sh_ups_buf;
1044
1045 for(y = 0; y < size; y++) {
1046 int32_t v = sh_ups_tmp_buf[size - 1] * sw;
1047 for(x = size - 1; x >= 0; x--) {
1048 sh_ups_blur_buf[x] = v;
1049
1050 /*Forget the right pixel*/
1051 uint32_t right_val = 0;
1052 if(x + s_right < size) right_val = sh_ups_tmp_buf[x + s_right];
1053 v -= right_val;
1054
1055 /*Add the left pixel*/
1056 uint32_t left_val;
1057 if(x - s_left - 1 < 0) left_val = sh_ups_tmp_buf[0];
1058 else left_val = sh_ups_tmp_buf[x - s_left - 1];
1059 v += left_val;
1060 }
1061 lv_memcpy(sh_ups_tmp_buf, sh_ups_blur_buf, size * sizeof(uint16_t));
1062 sh_ups_tmp_buf += size;
1063 }
1064
1065 /*Vertical blur*/
1066 uint32_t i;
1067 uint32_t max_v = LV_OPA_COVER << SHADOW_UPSCALE_SHIFT;
1068 uint32_t max_v_div = max_v / sw;
1069 for(i = 0; i < (uint32_t)size * size; i++) {
1070 if(sh_ups_buf[i] == 0) continue;
1071 else if(sh_ups_buf[i] == max_v) sh_ups_buf[i] = max_v_div;
1072 else sh_ups_buf[i] = sh_ups_buf[i] / sw;
1073 }
1074
1075 for(x = 0; x < size; x++) {
1076 sh_ups_tmp_buf = &sh_ups_buf[x];
1077 int32_t v = sh_ups_tmp_buf[0] * sw;
1078 for(y = 0; y < size ; y++, sh_ups_tmp_buf += size) {
1079 sh_ups_blur_buf[y] = v < 0 ? 0 : (v >> SHADOW_UPSCALE_SHIFT);
1080
1081 /*Forget the top pixel*/
1082 uint32_t top_val;
1083 if(y - s_right <= 0) top_val = sh_ups_tmp_buf[0];
1084 else top_val = sh_ups_buf[(y - s_right) * size + x];
1085 v -= top_val;
1086
1087 /*Add the bottom pixel*/
1088 uint32_t bottom_val;
1089 if(y + s_left + 1 < size) bottom_val = sh_ups_buf[(y + s_left + 1) * size + x];
1090 else bottom_val = sh_ups_buf[(size - 1) * size + x];
1091 v += bottom_val;
1092 }
1093
1094 /*Write back the result into `sh_ups_buf`*/
1095 sh_ups_tmp_buf = &sh_ups_buf[x];
1096 for(y = 0; y < size; y++, sh_ups_tmp_buf += size) {
1097 (*sh_ups_tmp_buf) = sh_ups_blur_buf[y];
1098 }
1099 }
1100
1101 lv_mem_buf_release(sh_ups_blur_buf);
1102 }
1103 #endif
1104
draw_outline(lv_draw_ctx_t * draw_ctx,const lv_draw_rect_dsc_t * dsc,const lv_area_t * coords)1105 static void draw_outline(lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords)
1106 {
1107 if(dsc->outline_opa <= LV_OPA_MIN) return;
1108 if(dsc->outline_width == 0) return;
1109
1110 lv_opa_t opa = dsc->outline_opa;
1111
1112 if(opa > LV_OPA_MAX) opa = LV_OPA_COVER;
1113
1114 /*Get the inner radius*/
1115 lv_area_t area_inner;
1116 lv_area_copy(&area_inner, coords);
1117
1118 /*Bring the outline closer to make sure there is no color bleeding with pad=0*/
1119 lv_coord_t pad = dsc->outline_pad - 1;
1120 area_inner.x1 -= pad;
1121 area_inner.y1 -= pad;
1122 area_inner.x2 += pad;
1123 area_inner.y2 += pad;
1124
1125 lv_area_t area_outer;
1126 lv_area_copy(&area_outer, &area_inner);
1127
1128 area_outer.x1 -= dsc->outline_width;
1129 area_outer.x2 += dsc->outline_width;
1130 area_outer.y1 -= dsc->outline_width;
1131 area_outer.y2 += dsc->outline_width;
1132
1133
1134 int32_t inner_w = lv_area_get_width(&area_inner);
1135 int32_t inner_h = lv_area_get_height(&area_inner);
1136 int32_t rin = dsc->radius;
1137 int32_t short_side = LV_MIN(inner_w, inner_h);
1138 if(rin > short_side >> 1) rin = short_side >> 1;
1139
1140 lv_coord_t rout = rin + dsc->outline_width;
1141
1142 draw_border_generic(draw_ctx, &area_outer, &area_inner, rout, rin, dsc->outline_color, dsc->outline_opa,
1143 dsc->blend_mode);
1144 }
1145
draw_border_generic(lv_draw_ctx_t * draw_ctx,const lv_area_t * outer_area,const lv_area_t * inner_area,lv_coord_t rout,lv_coord_t rin,lv_color_t color,lv_opa_t opa,lv_blend_mode_t blend_mode)1146 void draw_border_generic(lv_draw_ctx_t * draw_ctx, const lv_area_t * outer_area, const lv_area_t * inner_area,
1147 lv_coord_t rout, lv_coord_t rin, lv_color_t color, lv_opa_t opa, lv_blend_mode_t blend_mode)
1148 {
1149 opa = opa >= LV_OPA_COVER ? LV_OPA_COVER : opa;
1150
1151 bool mask_any = lv_draw_mask_is_any(outer_area);
1152
1153 if(!mask_any && rout == 0 && rin == 0) {
1154 draw_border_simple(draw_ctx, outer_area, inner_area, color, opa);
1155 return;
1156 }
1157
1158 #if LV_DRAW_COMPLEX
1159 /*Get clipped draw area which is the real draw area.
1160 *It is always the same or inside `coords`*/
1161 lv_area_t draw_area;
1162 if(!_lv_area_intersect(&draw_area, outer_area, draw_ctx->clip_area)) return;
1163 int32_t draw_area_w = lv_area_get_width(&draw_area);
1164
1165 lv_draw_sw_blend_dsc_t blend_dsc;
1166 lv_memset_00(&blend_dsc, sizeof(blend_dsc));
1167 blend_dsc.mask_buf = lv_mem_buf_get(draw_area_w);;
1168
1169
1170 /*Create mask for the outer area*/
1171 int16_t mask_rout_id = LV_MASK_ID_INV;
1172 lv_draw_mask_radius_param_t mask_rout_param;
1173 if(rout > 0) {
1174 lv_draw_mask_radius_init(&mask_rout_param, outer_area, rout, false);
1175 mask_rout_id = lv_draw_mask_add(&mask_rout_param, NULL);
1176 }
1177
1178 /*Create mask for the inner mask*/
1179 lv_draw_mask_radius_param_t mask_rin_param;
1180 lv_draw_mask_radius_init(&mask_rin_param, inner_area, rin, true);
1181 int16_t mask_rin_id = lv_draw_mask_add(&mask_rin_param, NULL);
1182
1183 int32_t h;
1184 lv_area_t blend_area;
1185 blend_dsc.blend_area = &blend_area;
1186 blend_dsc.mask_area = &blend_area;
1187 blend_dsc.color = color;
1188 blend_dsc.opa = opa;
1189 blend_dsc.blend_mode = blend_mode;
1190
1191 /*Calculate the x and y coordinates where the straight parts area*/
1192 lv_area_t core_area;
1193 core_area.x1 = LV_MAX(outer_area->x1 + rout, inner_area->x1);
1194 core_area.x2 = LV_MIN(outer_area->x2 - rout, inner_area->x2);
1195 core_area.y1 = LV_MAX(outer_area->y1 + rout, inner_area->y1);
1196 core_area.y2 = LV_MIN(outer_area->y2 - rout, inner_area->y2);
1197 lv_coord_t core_w = lv_area_get_width(&core_area);
1198
1199 bool top_side = outer_area->y1 <= inner_area->y1 ? true : false;
1200 bool bottom_side = outer_area->y2 >= inner_area->y2 ? true : false;
1201
1202 /*If there is other masks, need to draw line by line*/
1203 if(mask_any) {
1204 blend_area.x1 = draw_area.x1;
1205 blend_area.x2 = draw_area.x2;
1206 for(h = draw_area.y1; h <= draw_area.y2; h++) {
1207 if(!top_side && h < core_area.y1) continue;
1208 if(!bottom_side && h > core_area.y2) break;
1209
1210 blend_area.y1 = h;
1211 blend_area.y2 = h;
1212
1213 lv_memset_ff(blend_dsc.mask_buf, draw_area_w);
1214 blend_dsc.mask_res = lv_draw_mask_apply(blend_dsc.mask_buf, draw_area.x1, h, draw_area_w);
1215 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1216 }
1217
1218 lv_draw_mask_free_param(&mask_rin_param);
1219 lv_draw_mask_remove_id(mask_rin_id);
1220 if(mask_rout_id != LV_MASK_ID_INV) {
1221 lv_draw_mask_free_param(&mask_rout_param);
1222 lv_draw_mask_remove_id(mask_rout_id);
1223 }
1224 lv_mem_buf_release(blend_dsc.mask_buf);
1225 return;
1226 }
1227
1228 /*No masks*/
1229 bool left_side = outer_area->x1 <= inner_area->x1 ? true : false;
1230 bool right_side = outer_area->x2 >= inner_area->x2 ? true : false;
1231
1232 bool split_hor = true;
1233 if(left_side && right_side && top_side && bottom_side &&
1234 core_w < SPLIT_LIMIT) {
1235 split_hor = false;
1236 }
1237
1238 blend_dsc.mask_res = LV_DRAW_MASK_RES_FULL_COVER;
1239 /*Draw the straight lines first if they are long enough*/
1240 if(top_side && split_hor) {
1241 blend_area.x1 = core_area.x1;
1242 blend_area.x2 = core_area.x2;
1243 blend_area.y1 = outer_area->y1;
1244 blend_area.y2 = inner_area->y1 - 1;
1245 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1246 }
1247
1248 if(bottom_side && split_hor) {
1249 blend_area.x1 = core_area.x1;
1250 blend_area.x2 = core_area.x2;
1251 blend_area.y1 = inner_area->y2 + 1;
1252 blend_area.y2 = outer_area->y2;
1253 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1254 }
1255
1256 if(left_side) {
1257 blend_area.x1 = outer_area->x1;
1258 blend_area.x2 = inner_area->x1 - 1;
1259 blend_area.y1 = core_area.y1;
1260 blend_area.y2 = core_area.y2;
1261 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1262 }
1263
1264 if(right_side) {
1265 blend_area.x1 = inner_area->x2 + 1;
1266 blend_area.x2 = outer_area->x2;
1267 blend_area.y1 = core_area.y1;
1268 blend_area.y2 = core_area.y2;
1269 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1270 }
1271
1272 /*Draw the corners*/
1273 lv_coord_t blend_w;
1274
1275 /*Left and right corner together is they close to eachother*/
1276 if(!split_hor) {
1277 /*Calculate the top corner and mirror it to the bottom*/
1278 blend_area.x1 = draw_area.x1;
1279 blend_area.x2 = draw_area.x2;
1280 lv_coord_t max_h = LV_MAX(rout, outer_area->y1 - inner_area->y1);
1281 for(h = 0; h < max_h; h++) {
1282 lv_coord_t top_y = outer_area->y1 + h;
1283 lv_coord_t bottom_y = outer_area->y2 - h;
1284 if(top_y < draw_area.y1 && bottom_y > draw_area.y2) continue; /*This line is clipped now*/
1285
1286 lv_memset_ff(blend_dsc.mask_buf, draw_area_w);
1287 blend_dsc.mask_res = lv_draw_mask_apply(blend_dsc.mask_buf, blend_area.x1, top_y, draw_area_w);
1288
1289 if(top_y >= draw_area.y1) {
1290 blend_area.y1 = top_y;
1291 blend_area.y2 = top_y;
1292 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1293 }
1294
1295 if(bottom_y <= draw_area.y2) {
1296 blend_area.y1 = bottom_y;
1297 blend_area.y2 = bottom_y;
1298 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1299 }
1300 }
1301 }
1302 else {
1303 /*Left corners*/
1304 blend_area.x1 = draw_area.x1;
1305 blend_area.x2 = LV_MIN(draw_area.x2, core_area.x1 - 1);
1306 blend_w = lv_area_get_width(&blend_area);
1307 if(blend_w > 0) {
1308 if(left_side || top_side) {
1309 for(h = draw_area.y1; h < core_area.y1; h++) {
1310 blend_area.y1 = h;
1311 blend_area.y2 = h;
1312
1313 lv_memset_ff(blend_dsc.mask_buf, blend_w);
1314 blend_dsc.mask_res = lv_draw_mask_apply(blend_dsc.mask_buf, blend_area.x1, h, blend_w);
1315 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1316 }
1317 }
1318
1319 if(left_side || bottom_side) {
1320 for(h = core_area.y2 + 1; h <= draw_area.y2; h++) {
1321 blend_area.y1 = h;
1322 blend_area.y2 = h;
1323
1324 lv_memset_ff(blend_dsc.mask_buf, blend_w);
1325 blend_dsc.mask_res = lv_draw_mask_apply(blend_dsc.mask_buf, blend_area.x1, h, blend_w);
1326 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1327 }
1328 }
1329 }
1330
1331 /*Right corners*/
1332 blend_area.x1 = LV_MAX(draw_area.x1, core_area.x2 + 1);
1333 blend_area.x2 = draw_area.x2;
1334 blend_w = lv_area_get_width(&blend_area);
1335
1336 if(blend_w > 0) {
1337 if(right_side || top_side) {
1338 for(h = draw_area.y1; h < core_area.y1; h++) {
1339 blend_area.y1 = h;
1340 blend_area.y2 = h;
1341
1342 lv_memset_ff(blend_dsc.mask_buf, blend_w);
1343 blend_dsc.mask_res = lv_draw_mask_apply(blend_dsc.mask_buf, blend_area.x1, h, blend_w);
1344 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1345 }
1346 }
1347
1348 if(right_side || bottom_side) {
1349 for(h = core_area.y2 + 1; h <= draw_area.y2; h++) {
1350 blend_area.y1 = h;
1351 blend_area.y2 = h;
1352
1353 lv_memset_ff(blend_dsc.mask_buf, blend_w);
1354 blend_dsc.mask_res = lv_draw_mask_apply(blend_dsc.mask_buf, blend_area.x1, h, blend_w);
1355 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1356 }
1357 }
1358 }
1359 }
1360
1361 lv_draw_mask_free_param(&mask_rin_param);
1362 lv_draw_mask_remove_id(mask_rin_id);
1363 lv_draw_mask_free_param(&mask_rout_param);
1364 lv_draw_mask_remove_id(mask_rout_id);
1365 lv_mem_buf_release(blend_dsc.mask_buf);
1366
1367 #else /*LV_DRAW_COMPLEX*/
1368 LV_UNUSED(blend_mode);
1369 #endif /*LV_DRAW_COMPLEX*/
1370 }
draw_border_simple(lv_draw_ctx_t * draw_ctx,const lv_area_t * outer_area,const lv_area_t * inner_area,lv_color_t color,lv_opa_t opa)1371 static void draw_border_simple(lv_draw_ctx_t * draw_ctx, const lv_area_t * outer_area, const lv_area_t * inner_area,
1372 lv_color_t color, lv_opa_t opa)
1373 {
1374 lv_area_t a;
1375 lv_draw_sw_blend_dsc_t blend_dsc;
1376 lv_memset_00(&blend_dsc, sizeof(lv_draw_sw_blend_dsc_t));
1377 blend_dsc.blend_area = &a;
1378 blend_dsc.color = color;
1379 blend_dsc.opa = opa;
1380
1381 bool top_side = outer_area->y1 <= inner_area->y1 ? true : false;
1382 bool bottom_side = outer_area->y2 >= inner_area->y2 ? true : false;
1383 bool left_side = outer_area->x1 <= inner_area->x1 ? true : false;
1384 bool right_side = outer_area->x2 >= inner_area->x2 ? true : false;
1385
1386
1387 /*Top*/
1388 a.x1 = outer_area->x1;
1389 a.x2 = outer_area->x2;
1390 a.y1 = outer_area->y1;
1391 a.y2 = inner_area->y1 - 1;
1392 if(top_side) {
1393 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1394 }
1395
1396 /*Bottom*/
1397 a.y1 = inner_area->y2 + 1;
1398 a.y2 = outer_area->y2;
1399 if(bottom_side) {
1400 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1401 }
1402
1403 /*Left*/
1404 a.x1 = outer_area->x1;
1405 a.x2 = inner_area->x1 - 1;
1406 a.y1 = (top_side) ? inner_area->y1 : outer_area->y1;
1407 a.y2 = (bottom_side) ? inner_area->y2 : outer_area->y2;
1408 if(left_side) {
1409 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1410 }
1411
1412 /*Right*/
1413 a.x1 = inner_area->x2 + 1;
1414 a.x2 = outer_area->x2;
1415 if(right_side) {
1416 lv_draw_sw_blend(draw_ctx, &blend_dsc);
1417 }
1418 }
1419
1420
