]> Dogcows Code - chaz/openbox/blob - render/gradient.c
projects / chaz / openbox / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
history | raw | HEAD
use RrColorGC
[chaz/openbox] / render / gradient.c
1 #include "render.h"
2 #include "gradient.h"
3 #include "color.h"
4 #include <glib.h>
5
6 static void highlight(RrPixel32 *x, RrPixel32 *y, gboolean raised);
7 static void gradient_solid(RrAppearance *l, int w, int h);
8 static void gradient_vertical(RrSurface *sf, int w, int h);
9 static void gradient_horizontal(RrSurface *sf, int w, int h);
10 static void gradient_diagonal(RrSurface *sf, int w, int h);
11 static void gradient_crossdiagonal(RrSurface *sf, int w, int h);
12 static void gradient_pyramid(RrSurface *sf, int inw, int inh);
13
14 void RrRender(RrAppearance *a, int w, int h)
15 {
16 RrPixel32 *data = a->surface.pixel_data;
17 RrPixel32 current;
18 unsigned int r,g,b;
19 int off, x;
20
21 switch (a->surface.grad) {
22 case RR_SURFACE_SOLID:
23 gradient_solid(a, w, h);
24 break;
25 case RR_SURFACE_VERTICAL:
26 gradient_vertical(&a->surface, w, h);
27 break;
28 case RR_SURFACE_HORIZONTAL:
29 gradient_horizontal(&a->surface, w, h);
30 break;
31 case RR_SURFACE_DIAGONAL:
32 gradient_diagonal(&a->surface, w, h);
33 break;
34 case RR_SURFACE_CROSS_DIAGONAL:
35 gradient_crossdiagonal(&a->surface, w, h);
36 break;
37 case RR_SURFACE_PYRAMID:
38 gradient_pyramid(&a->surface, w, h);
39 break;
40 default:
41 g_assert_not_reached(); /* unhandled gradient */
42 return;
43 }
44
45 if (a->surface.relief == RR_RELIEF_FLAT && a->surface.border) {
46 r = a->surface.border_color->r;
47 g = a->surface.border_color->g;
48 b = a->surface.border_color->b;
49 current = (r << RrDefaultRedOffset)
50 + (g << RrDefaultGreenOffset)
51 + (b << RrDefaultBlueOffset);
52 for (off = 0, x = 0; x < w; ++x, off++) {
53 *(data + off) = current;
54 *(data + off + ((h-1) * w)) = current;
55 }
56 for (off = 0, x = 0; x < h; ++x, off++) {
57 *(data + (off * w)) = current;
58 *(data + (off * w) + w - 1) = current;
59 }
60 }
61
62 if (a->surface.relief != RR_RELIEF_FLAT) {
63 if (a->surface.bevel == RR_BEVEL_1) {
64 for (off = 1, x = 1; x < w - 1; ++x, off++)
65 highlight(data + off,
66 data + off + (h-1) * w,
67 a->surface.relief==RR_RELIEF_RAISED);
68 for (off = 0, x = 0; x < h; ++x, off++)
69 highlight(data + off * w,
70 data + off * w + w - 1,
71 a->surface.relief==RR_RELIEF_RAISED);
72 }
73
74 if (a->surface.bevel == RR_BEVEL_2) {
75 for (off = 2, x = 2; x < w - 2; ++x, off++)
76 highlight(data + off + w,
77 data + off + (h-2) * w,
78 a->surface.relief==RR_RELIEF_RAISED);
79 for (off = 1, x = 1; x < h-1; ++x, off++)
80 highlight(data + off * w + 1,
81 data + off * w + w - 2,
82 a->surface.relief==RR_RELIEF_RAISED);
83 }
84 }
85 }
86
87 static void highlight(RrPixel32 *x, RrPixel32 *y, gboolean raised)
88 {
89 int r, g, b;
90
91 RrPixel32 *up, *down;
92 if (raised) {
93 up = x;
94 down = y;
95 } else {
96 up = y;
97 down = x;
98 }
99 r = (*up >> RrDefaultRedOffset) & 0xFF;
100 r += r >> 1;
101 g = (*up >> RrDefaultGreenOffset) & 0xFF;
102 g += g >> 1;
103 b = (*up >> RrDefaultBlueOffset) & 0xFF;
104 b += b >> 1;
105 if (r > 0xFF) r = 0xFF;
106 if (g > 0xFF) g = 0xFF;
107 if (b > 0xFF) b = 0xFF;
108 *up = (r << RrDefaultRedOffset) + (g << RrDefaultGreenOffset)
109 + (b << RrDefaultBlueOffset);
110
111 r = (*down >> RrDefaultRedOffset) & 0xFF;
112 r = (r >> 1) + (r >> 2);
113 g = (*down >> RrDefaultGreenOffset) & 0xFF;
114 g = (g >> 1) + (g >> 2);
115 b = (*down >> RrDefaultBlueOffset) & 0xFF;
116 b = (b >> 1) + (b >> 2);
117 *down = (r << RrDefaultRedOffset) + (g << RrDefaultGreenOffset)
118 + (b << RrDefaultBlueOffset);
119 }
120
121 static void create_bevel_colors(RrAppearance *l)
122 {
123 int r, g, b;
124
125 /* light color */
126 r = l->surface.primary->r;
127 r += r >> 1;
128 g = l->surface.primary->g;
129 g += g >> 1;
130 b = l->surface.primary->b;
131 b += b >> 1;
132 if (r > 0xFF) r = 0xFF;
133 if (g > 0xFF) g = 0xFF;
134 if (b > 0xFF) b = 0xFF;
135 g_assert(!l->surface.bevel_light);
136 l->surface.bevel_light = RrColorNew(l->inst, r, g, b);
137
138 /* dark color */
139 r = l->surface.primary->r;
140 r = (r >> 1) + (r >> 2);
141 g = l->surface.primary->g;
142 g = (g >> 1) + (g >> 2);
143 b = l->surface.primary->b;
144 b = (b >> 1) + (b >> 2);
145 g_assert(!l->surface.bevel_dark);
146 l->surface.bevel_dark = RrColorNew(l->inst, r, g, b);
147 }
148
149 static void gradient_solid(RrAppearance *l, int w, int h)
150 {
151 RrPixel32 pix;
152 int i, a, b;
153 RrSurface *sp = &l->surface;
154 int left = 0, top = 0, right = w - 1, bottom = h - 1;
155
156 pix = (sp->primary->r << RrDefaultRedOffset)
157 + (sp->primary->g << RrDefaultGreenOffset)
158 + (sp->primary->b << RrDefaultBlueOffset);
159
160 for (a = 0; a < w; a++)
161 for (b = 0; b < h; b++)
162 sp->pixel_data[a + b * w] = pix;
163
164 XFillRectangle(RrDisplay(l->inst), l->pixmap, RrColorGC(sp->primary),
165 0, 0, w, h);
166
167 if (sp->interlaced) {
168 for (i = 0; i < h; i += 2)
169 XDrawLine(RrDisplay(l->inst), l->pixmap, RrColorGC(sp->secondary),
170 0, i, w, i);
171 }
172
173 switch (sp->relief) {
174 case RR_RELIEF_RAISED:
175 if (!sp->bevel_dark)
176 create_bevel_colors(l);
177
178 switch (sp->bevel) {
179 case RR_BEVEL_1:
180 XDrawLine(RrDisplay(l->inst), l->pixmap, RrColorGC(sp->bevel_dark),
181 left, bottom, right, bottom);
182 XDrawLine(RrDisplay(l->inst), l->pixmap, RrColorGC(sp->bevel_dark),
183 right, bottom, right, top);
184
185 XDrawLine(RrDisplay(l->inst), l->pixmap,RrColorGC(sp->bevel_light),
186 left, top, right, top);
187 XDrawLine(RrDisplay(l->inst), l->pixmap,RrColorGC(sp->bevel_light),
188 left, bottom, left, top);
189 break;
190 case RR_BEVEL_2:
191 XDrawLine(RrDisplay(l->inst), l->pixmap, RrColorGC(sp->bevel_dark),
192 left + 1, bottom - 2, right - 2, bottom - 2);
193 XDrawLine(RrDisplay(l->inst), l->pixmap, RrColorGC(sp->bevel_dark),
194 right - 2, bottom - 2, right - 2, top + 1);
195
196 XDrawLine(RrDisplay(l->inst), l->pixmap,RrColorGC(sp->bevel_light),
197 left + 1, top + 1, right - 2, top + 1);
198 XDrawLine(RrDisplay(l->inst), l->pixmap,RrColorGC(sp->bevel_light),
199 left + 1, bottom - 2, left + 1, top + 1);
200 break;
201 default:
202 g_assert_not_reached(); /* unhandled BevelType */
203 }
204 break;
205 case RR_RELIEF_SUNKEN:
206 if (!sp->bevel_dark)
207 create_bevel_colors(l);
208
209 switch (sp->bevel) {
210 case RR_BEVEL_1:
211 XDrawLine(RrDisplay(l->inst), l->pixmap,RrColorGC(sp->bevel_light),
212 left, bottom, right, bottom);
213 XDrawLine(RrDisplay(l->inst), l->pixmap,RrColorGC(sp->bevel_light),
214 right, bottom, right, top);
215
216 XDrawLine(RrDisplay(l->inst), l->pixmap, RrColorGC(sp->bevel_dark),
217 left, top, right, top);
218 XDrawLine(RrDisplay(l->inst), l->pixmap, RrColorGC(sp->bevel_dark),
219 left, bottom, left, top);
220 break;
221 case RR_BEVEL_2:
222 XDrawLine(RrDisplay(l->inst), l->pixmap,RrColorGC(sp->bevel_light),
223 left + 1, bottom - 2, right - 2, bottom - 2);
224 XDrawLine(RrDisplay(l->inst), l->pixmap,RrColorGC(sp->bevel_light),
225 right - 2, bottom - 2, right - 2, top + 1);
226
227 XDrawLine(RrDisplay(l->inst), l->pixmap, RrColorGC(sp->bevel_dark),
228 left + 1, top + 1, right - 2, top + 1);
229 XDrawLine(RrDisplay(l->inst), l->pixmap, RrColorGC(sp->bevel_dark),
230 left + 1, bottom - 2, left + 1, top + 1);
231
232 break;
233 default:
234 g_assert_not_reached(); /* unhandled BevelType */
235 }
236 break;
237 case RR_RELIEF_FLAT:
238 if (sp->border) {
239 XDrawRectangle(RrDisplay(l->inst), l->pixmap,
240 RrColorGC(sp->border_color),
241 left, top, right, bottom);
242 }
243 break;
244 default:
245 g_assert_not_reached(); /* unhandled ReliefType */
246 }
247 }
248
249 /* * * * * * * * * * * * * * GRADIENT MAGIC WOOT * * * * * * * * * * * * * * */
250
251 #define VARS(x) \
252 unsigned int color##x[3]; \
253 int len##x, cdelta##x[3], error##x[3] = { 0, 0, 0 }, inc##x[3]; \
254 gboolean bigslope##x[3] /* color slope > 1 */
255
256 #define SETUP(x, from, to, w) \
257 len##x = w; \
258 \
259 color##x[0] = from->r; \
260 color##x[1] = from->g; \
261 color##x[2] = from->b; \
262 \
263 cdelta##x[0] = to->r - from->r; \
264 cdelta##x[1] = to->g - from->g; \
265 cdelta##x[2] = to->b - from->b; \
266 \
267 if (cdelta##x[0] < 0) { \
268 cdelta##x[0] = -cdelta##x[0]; \
269 inc##x[0] = -1; \
270 } else \
271 inc##x[0] = 1; \
272 if (cdelta##x[1] < 0) { \
273 cdelta##x[1] = -cdelta##x[1]; \
274 inc##x[1] = -1; \
275 } else \
276 inc##x[1] = 1; \
277 if (cdelta##x[2] < 0) { \
278 cdelta##x[2] = -cdelta##x[2]; \
279 inc##x[2] = -1; \
280 } else \
281 inc##x[2] = 1; \
282 bigslope##x[0] = cdelta##x[0] > w;\
283 bigslope##x[1] = cdelta##x[1] > w;\
284 bigslope##x[2] = cdelta##x[2] > w
285
286 #define COLOR_RR(x, c) \
287 c->r = color##x[0]; \
288 c->g = color##x[1]; \
289 c->b = color##x[2]
290
291 #define COLOR(x) \
292 ((color##x[0] << RrDefaultRedOffset) + \
293 (color##x[1] << RrDefaultGreenOffset) + \
294 (color##x[2] << RrDefaultBlueOffset))
295
296 #define INCREMENT(x, i) \
297 (inc##x[i])
298
299 #define NEXT(x) \
300 { \
301 int i; \
302 for (i = 2; i >= 0; --i) { \
303 if (!cdelta##x[i]) continue; \
304 \
305 if (!bigslope##x[i]) { \
306 /* Y (color) is dependant on X */ \
307 error##x[i] += cdelta##x[i]; \
308 if ((error##x[i] << 1) >= len##x) { \
309 color##x[i] += INCREMENT(x, i); \
310 error##x[i] -= len##x; \
311 } \
312 } else { \
313 /* X is dependant on Y (color) */ \
314 while (1) { \
315 color##x[i] += INCREMENT(x, i); \
316 error##x[i] += len##x; \
317 if ((error##x[i] << 1) >= cdelta##x[i]) { \
318 error##x[i] -= cdelta##x[i]; \
319 break; \
320 } \
321 } \
322 } \
323 } \
324 }
325
326 static void gradient_horizontal(RrSurface *sf, int w, int h)
327 {
328 int x, y;
329 RrPixel32 *data = sf->pixel_data, *datav;
330 RrPixel32 current;
331
332 VARS(x);
333 SETUP(x, sf->primary, sf->secondary, w);
334
335 for (x = w - 1; x > 0; --x) { /* 0 -> w-1 */
336 current = COLOR(x);
337 datav = data;
338 for (y = h - 1; y >= 0; --y) { /* 0 -> h */
339 *datav = current;
340 datav += w;
341 }
342 ++data;
343
344 NEXT(x);
345 }
346 current = COLOR(x);
347 for (y = h - 1; y >= 0; --y) /* 0 -> h */
348 *(data + y * w) = current;
349 }
350
351 static void gradient_vertical(RrSurface *sf, int w, int h)
352 {
353 int x, y;
354 RrPixel32 *data = sf->pixel_data;
355 RrPixel32 current;
356
357 VARS(y);
358 SETUP(y, sf->primary, sf->secondary, h);
359
360 for (y = h - 1; y > 0; --y) { /* 0 -> h-1 */
361 current = COLOR(y);
362 for (x = w - 1; x >= 0; --x) /* 0 -> w */
363 *(data++) = current;
364
365 NEXT(y);
366 }
367 current = COLOR(y);
368 for (x = w - 1; x >= 0; --x) /* 0 -> w */
369 *(data++) = current;
370 }
371
372
373 static void gradient_diagonal(RrSurface *sf, int w, int h)
374 {
375 int x, y;
376 RrPixel32 *data = sf->pixel_data;
377 RrColor left, right;
378 RrColor extracorner;
379
380 VARS(lefty);
381 VARS(righty);
382 VARS(x);
383
384 extracorner.r = (sf->primary->r + sf->secondary->r) / 2;
385 extracorner.g = (sf->primary->g + sf->secondary->g) / 2;
386 extracorner.b = (sf->primary->b + sf->secondary->b) / 2;
387
388 SETUP(lefty, sf->primary, (&extracorner), h);
389 SETUP(righty, (&extracorner), sf->secondary, h);
390
391 for (y = h - 1; y > 0; --y) { /* 0 -> h-1 */
392 COLOR_RR(lefty, (&left));
393 COLOR_RR(righty, (&right));
394
395 SETUP(x, (&left), (&right), w);
396
397 for (x = w - 1; x > 0; --x) { /* 0 -> w-1 */
398 *(data++) = COLOR(x);
399
400 NEXT(x);
401 }
402 *(data++) = COLOR(x);
403
404 NEXT(lefty);
405 NEXT(righty);
406 }
407 COLOR_RR(lefty, (&left));
408 COLOR_RR(righty, (&right));
409
410 SETUP(x, (&left), (&right), w);
411
412 for (x = w - 1; x > 0; --x) { /* 0 -> w-1 */
413 *(data++) = COLOR(x);
414
415 NEXT(x);
416 }
417 *data = COLOR(x);
418 }
419
420 static void gradient_crossdiagonal(RrSurface *sf, int w, int h)
421 {
422 int x, y;
423 RrPixel32 *data = sf->pixel_data;
424 RrColor left, right;
425 RrColor extracorner;
426
427 VARS(lefty);
428 VARS(righty);
429 VARS(x);
430
431 extracorner.r = (sf->primary->r + sf->secondary->r) / 2;
432 extracorner.g = (sf->primary->g + sf->secondary->g) / 2;
433 extracorner.b = (sf->primary->b + sf->secondary->b) / 2;
434
435 SETUP(lefty, (&extracorner), sf->secondary, h);
436 SETUP(righty, sf->primary, (&extracorner), h);
437
438 for (y = h - 1; y > 0; --y) { /* 0 -> h-1 */
439 COLOR_RR(lefty, (&left));
440 COLOR_RR(righty, (&right));
441
442 SETUP(x, (&left), (&right), w);
443
444 for (x = w - 1; x > 0; --x) { /* 0 -> w-1 */
445 *(data++) = COLOR(x);
446
447 NEXT(x);
448 }
449 *(data++) = COLOR(x);
450
451 NEXT(lefty);
452 NEXT(righty);
453 }
454 COLOR_RR(lefty, (&left));
455 COLOR_RR(righty, (&right));
456
457 SETUP(x, (&left), (&right), w);
458
459 for (x = w - 1; x > 0; --x) { /* 0 -> w-1 */
460 *(data++) = COLOR(x);
461
462 NEXT(x);
463 }
464 *data = COLOR(x);
465 }
466
467 static void gradient_pyramid(RrSurface *sf, int inw, int inh)
468 {
469 int x, y, w = (inw >> 1) + 1, h = (inh >> 1) + 1;
470 RrPixel32 *data = sf->pixel_data;
471 RrPixel32 *end = data + inw*inh - 1;
472 RrPixel32 current;
473 RrColor left, right;
474 RrColor extracorner;
475
476 VARS(lefty);
477 VARS(righty);
478 VARS(x);
479
480 extracorner.r = (sf->primary->r + sf->secondary->r) / 2;
481 extracorner.g = (sf->primary->g + sf->secondary->g) / 2;
482 extracorner.b = (sf->primary->b + sf->secondary->b) / 2;
483
484 SETUP(lefty, (&extracorner), sf->secondary, h);
485 SETUP(righty, sf->primary, (&extracorner), h);
486
487 for (y = h - 1; y > 0; --y) { /* 0 -> h-1 */
488 COLOR_RR(lefty, (&left));
489 COLOR_RR(righty, (&right));
490
491 SETUP(x, (&left), (&right), w);
492
493 for (x = w - 1; x > 0; --x) { /* 0 -> w-1 */
494 current = COLOR(x);
495 *(data+x) = current;
496 *(data+inw-x) = current;
497 *(end-x) = current;
498 *(end-(inw-x)) = current;
499
500 NEXT(x);
501 }
502 current = COLOR(x);
503 *(data+x) = current;
504 *(data+inw-x) = current;
505 *(end-x) = current;
506 *(end-(inw-x)) = current;
507
508 data+=inw;
509 end-=inw;
510
511 NEXT(lefty);
512 NEXT(righty);
513 }
514 COLOR_RR(lefty, (&left));
515 COLOR_RR(righty, (&right));
516
517 SETUP(x, (&left), (&right), w);
518
519 for (x = w - 1; x > 0; --x) { /* 0 -> w-1 */
520 current = COLOR(x);
521 *(data+x) = current;
522 *(data+inw-x) = current;
523 *(end-x) = current;
524 *(end-(inw-x)) = current;
525
526 NEXT(x);
527 }
528 current = COLOR(x);
529 *(data+x) = current;
530 *(data+inw-x) = current;
531 *(end-x) = current;
532 *(end-(inw-x)) = current;
533 }
534
my patches for the openbox window manager
This page took 0.069556 seconds and 5 git commands to generate.