1 |
/*----------------------------------------------------------------------* |
2 |
* File: background.C - former xpm.C |
3 |
*----------------------------------------------------------------------* |
4 |
* |
5 |
* All portions of code are copyright by their respective author/s. |
6 |
* Copyright (c) 2005-2008 Marc Lehmann <schmorp@schmorp.de> |
7 |
* Copyright (c) 2007 Sasha Vasko <sasha@aftercode.net> |
8 |
* Copyright (c) 2010-2012 Emanuele Giaquinta <e.giaquinta@glauco.it> |
9 |
* |
10 |
* This program is free software; you can redistribute it and/or modify |
11 |
* it under the terms of the GNU General Public License as published by |
12 |
* the Free Software Foundation; either version 2 of the License, or |
13 |
* (at your option) any later version. |
14 |
* |
15 |
* This program is distributed in the hope that it will be useful, |
16 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
18 |
* GNU General Public License for more details. |
19 |
* |
20 |
* You should have received a copy of the GNU General Public License |
21 |
* along with this program; if not, write to the Free Software |
22 |
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
23 |
*---------------------------------------------------------------------*/ |
24 |
|
25 |
#include <math.h> |
26 |
#include "../config.h" /* NECESSARY */ |
27 |
#include "rxvt.h" /* NECESSARY */ |
28 |
|
29 |
#if XRENDER |
30 |
# include <X11/extensions/Xrender.h> |
31 |
#endif |
32 |
|
33 |
#ifndef FilterConvolution |
34 |
#define FilterConvolution "convolution" |
35 |
#endif |
36 |
|
37 |
#ifndef RepeatPad |
38 |
#define RepeatPad True |
39 |
#endif |
40 |
|
41 |
#ifdef HAVE_BG_PIXMAP |
42 |
# if XRENDER |
43 |
static Picture |
44 |
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha) |
45 |
{ |
46 |
Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
47 |
|
48 |
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
49 |
XRenderPictureAttributes pa; |
50 |
pa.repeat = True; |
51 |
pa.component_alpha = component_alpha; |
52 |
Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); |
53 |
|
54 |
XFreePixmap (dpy, pixmap); |
55 |
|
56 |
return mask; |
57 |
} |
58 |
# endif |
59 |
|
60 |
void |
61 |
rxvt_term::bg_destroy () |
62 |
{ |
63 |
#ifdef HAVE_PIXBUF |
64 |
if (pixbuf) |
65 |
g_object_unref (pixbuf); |
66 |
#endif |
67 |
|
68 |
if (bg_pixmap) |
69 |
XFreePixmap (dpy, bg_pixmap); |
70 |
} |
71 |
|
72 |
bool |
73 |
rxvt_term::bg_set_position (int x, int y) |
74 |
{ |
75 |
|
76 |
if (target_x != x |
77 |
|| target_y != y) |
78 |
{ |
79 |
target_x = x; |
80 |
target_y = y; |
81 |
return true; |
82 |
} |
83 |
return false; |
84 |
} |
85 |
|
86 |
bool |
87 |
rxvt_term::bg_window_size_sensitive () |
88 |
{ |
89 |
# ifdef ENABLE_TRANSPARENCY |
90 |
if (bg_flags & BG_IS_TRANSPARENT) |
91 |
return true; |
92 |
# endif |
93 |
|
94 |
# ifdef BG_IMAGE_FROM_FILE |
95 |
if (bg_flags & BG_IS_FROM_FILE) |
96 |
{ |
97 |
if (bg_flags & BG_IS_SIZE_SENSITIVE) |
98 |
return true; |
99 |
} |
100 |
# endif |
101 |
|
102 |
return false; |
103 |
} |
104 |
|
105 |
bool |
106 |
rxvt_term::bg_window_position_sensitive () |
107 |
{ |
108 |
# ifdef ENABLE_TRANSPARENCY |
109 |
if (bg_flags & BG_IS_TRANSPARENT) |
110 |
return true; |
111 |
# endif |
112 |
|
113 |
# ifdef BG_IMAGE_FROM_FILE |
114 |
if (bg_flags & BG_IS_FROM_FILE) |
115 |
{ |
116 |
if (bg_flags & BG_ROOT_ALIGN) |
117 |
return true; |
118 |
} |
119 |
# endif |
120 |
|
121 |
return false; |
122 |
} |
123 |
|
124 |
# ifdef BG_IMAGE_FROM_FILE |
125 |
static inline int |
126 |
make_align_position (int align, int window_size, int image_size) |
127 |
{ |
128 |
if (align >= 0 && align <= 100) |
129 |
return lerp (0, window_size - image_size, align); |
130 |
else if (align > 100) |
131 |
return lerp (window_size - image_size, window_size, align - 100); |
132 |
else |
133 |
return lerp (-image_size, 0, align + 100); |
134 |
} |
135 |
|
136 |
static inline int |
137 |
make_clip_rectangle (int pos, int size, int target_size, int &dst_pos, int &dst_size) |
138 |
{ |
139 |
int src_pos = 0; |
140 |
dst_pos = pos; |
141 |
dst_size = size; |
142 |
if (pos < 0) |
143 |
{ |
144 |
src_pos = -pos; |
145 |
dst_pos = 0; |
146 |
dst_size += pos; |
147 |
} |
148 |
|
149 |
min_it (dst_size, target_size - dst_pos); |
150 |
return src_pos; |
151 |
} |
152 |
|
153 |
bool |
154 |
rxvt_term::bg_set_geometry (const char *geom, bool update) |
155 |
{ |
156 |
bool changed = false; |
157 |
int geom_flags = 0; |
158 |
int x = h_align; |
159 |
int y = v_align; |
160 |
unsigned int w = h_scale; |
161 |
unsigned int h = v_scale; |
162 |
unsigned long new_flags = 0; |
163 |
|
164 |
if (geom == NULL) |
165 |
return false; |
166 |
|
167 |
if (geom[0]) |
168 |
{ |
169 |
char **arr = rxvt_strsplit (':', geom); |
170 |
|
171 |
for (int i = 0; arr[i]; i++) |
172 |
{ |
173 |
if (!strcasecmp (arr[i], "style=tiled")) |
174 |
{ |
175 |
new_flags = BG_TILE; |
176 |
w = h = noScale; |
177 |
x = y = 0; |
178 |
geom_flags = WidthValue|HeightValue|XValue|YValue; |
179 |
} |
180 |
else if (!strcasecmp (arr[i], "style=aspect-stretched")) |
181 |
{ |
182 |
new_flags = BG_KEEP_ASPECT; |
183 |
w = h = windowScale; |
184 |
x = y = centerAlign; |
185 |
geom_flags = WidthValue|HeightValue|XValue|YValue; |
186 |
} |
187 |
else if (!strcasecmp (arr[i], "style=stretched")) |
188 |
{ |
189 |
new_flags = 0; |
190 |
w = h = windowScale; |
191 |
geom_flags = WidthValue|HeightValue; |
192 |
} |
193 |
else if (!strcasecmp (arr[i], "style=centered")) |
194 |
{ |
195 |
new_flags = 0; |
196 |
w = h = noScale; |
197 |
x = y = centerAlign; |
198 |
geom_flags = WidthValue|HeightValue|XValue|YValue; |
199 |
} |
200 |
else if (!strcasecmp (arr[i], "style=root-tiled")) |
201 |
{ |
202 |
new_flags = BG_TILE|BG_ROOT_ALIGN; |
203 |
w = h = noScale; |
204 |
geom_flags = WidthValue|HeightValue; |
205 |
} |
206 |
else if (!strcasecmp (arr[i], "op=tile")) |
207 |
new_flags |= BG_TILE; |
208 |
else if (!strcasecmp (arr[i], "op=keep-aspect")) |
209 |
new_flags |= BG_KEEP_ASPECT; |
210 |
else if (!strcasecmp (arr[i], "op=root-align")) |
211 |
new_flags |= BG_ROOT_ALIGN; |
212 |
|
213 |
// deprecated |
214 |
else if (!strcasecmp (arr[i], "tile")) |
215 |
{ |
216 |
new_flags |= BG_TILE; |
217 |
w = h = noScale; |
218 |
geom_flags |= WidthValue|HeightValue; |
219 |
} |
220 |
else if (!strcasecmp (arr[i], "propscale")) |
221 |
{ |
222 |
new_flags |= BG_KEEP_ASPECT; |
223 |
w = h = windowScale; |
224 |
geom_flags |= WidthValue|HeightValue; |
225 |
} |
226 |
else if (!strcasecmp (arr[i], "hscale")) |
227 |
{ |
228 |
new_flags |= BG_TILE; |
229 |
w = windowScale; |
230 |
h = noScale; |
231 |
geom_flags |= WidthValue|HeightValue; |
232 |
} |
233 |
else if (!strcasecmp (arr[i], "vscale")) |
234 |
{ |
235 |
new_flags |= BG_TILE; |
236 |
h = windowScale; |
237 |
w = noScale; |
238 |
geom_flags |= WidthValue|HeightValue; |
239 |
} |
240 |
else if (!strcasecmp (arr[i], "scale")) |
241 |
{ |
242 |
w = h = windowScale; |
243 |
geom_flags |= WidthValue|HeightValue; |
244 |
} |
245 |
else if (!strcasecmp (arr[i], "auto")) |
246 |
{ |
247 |
w = h = windowScale; |
248 |
x = y = centerAlign; |
249 |
geom_flags |= WidthValue|HeightValue|XValue|YValue; |
250 |
} |
251 |
else if (!strcasecmp (arr[i], "root")) |
252 |
{ |
253 |
new_flags |= BG_TILE|BG_ROOT_ALIGN; |
254 |
w = h = noScale; |
255 |
geom_flags |= WidthValue|HeightValue; |
256 |
} |
257 |
|
258 |
else |
259 |
geom_flags |= XParseGeometry (arr[i], &x, &y, &w, &h); |
260 |
} /* done parsing ops */ |
261 |
|
262 |
rxvt_free_strsplit (arr); |
263 |
} |
264 |
|
265 |
new_flags |= bg_flags & ~BG_GEOMETRY_FLAGS; |
266 |
|
267 |
if (!update) |
268 |
{ |
269 |
if (!(geom_flags & XValue)) |
270 |
x = y = defaultAlign; |
271 |
else if (!(geom_flags & YValue)) |
272 |
y = x; |
273 |
|
274 |
if (!(geom_flags & (WidthValue|HeightValue))) |
275 |
w = h = defaultScale; |
276 |
else if (!(geom_flags & HeightValue)) |
277 |
h = w; |
278 |
else if (!(geom_flags & WidthValue)) |
279 |
w = h; |
280 |
} |
281 |
|
282 |
min_it (w, 1000); |
283 |
min_it (h, 1000); |
284 |
clamp_it (x, -100, 200); |
285 |
clamp_it (y, -100, 200); |
286 |
|
287 |
if (bg_flags != new_flags |
288 |
|| h_scale != w |
289 |
|| v_scale != h |
290 |
|| h_align != x |
291 |
|| v_align != y) |
292 |
{ |
293 |
bg_flags = new_flags; |
294 |
h_scale = w; |
295 |
v_scale = h; |
296 |
h_align = x; |
297 |
v_align = y; |
298 |
changed = true; |
299 |
} |
300 |
|
301 |
return changed; |
302 |
} |
303 |
|
304 |
void |
305 |
rxvt_term::get_image_geometry (int image_width, int image_height, int &w, int &h, int &x, int &y) |
306 |
{ |
307 |
int target_width = szHint.width; |
308 |
int target_height = szHint.height; |
309 |
|
310 |
w = h_scale * target_width / 100; |
311 |
h = v_scale * target_height / 100; |
312 |
|
313 |
if (bg_flags & BG_KEEP_ASPECT) |
314 |
{ |
315 |
float scale = (float)w / image_width; |
316 |
min_it (scale, (float)h / image_height); |
317 |
w = image_width * scale + 0.5; |
318 |
h = image_height * scale + 0.5; |
319 |
} |
320 |
|
321 |
if (!w) w = image_width; |
322 |
if (!h) h = image_height; |
323 |
|
324 |
if (bg_flags & BG_ROOT_ALIGN) |
325 |
{ |
326 |
x = -target_x; |
327 |
y = -target_y; |
328 |
} |
329 |
else |
330 |
{ |
331 |
x = make_align_position (h_align, target_width, w); |
332 |
y = make_align_position (v_align, target_height, h); |
333 |
} |
334 |
|
335 |
if (!(bg_flags & BG_TILE) |
336 |
|| h_scale || v_scale |
337 |
|| (!(bg_flags & BG_ROOT_ALIGN) && (h_align || v_align)) |
338 |
|| image_width > target_width || image_height > target_height) |
339 |
bg_flags |= BG_IS_SIZE_SENSITIVE; |
340 |
else |
341 |
bg_flags &= ~BG_IS_SIZE_SENSITIVE; |
342 |
} |
343 |
|
344 |
# ifdef HAVE_PIXBUF |
345 |
bool |
346 |
rxvt_term::pixbuf_to_pixmap (GdkPixbuf *pixbuf, Pixmap pixmap, GC gc, |
347 |
int src_x, int src_y, int dst_x, int dst_y, |
348 |
unsigned int width, unsigned int height) |
349 |
{ |
350 |
XImage *ximage; |
351 |
char *line; |
352 |
int width_r, width_g, width_b, width_a; |
353 |
int sh_r, sh_g, sh_b, sh_a; |
354 |
uint32_t alpha_mask; |
355 |
int rowstride; |
356 |
int channels; |
357 |
unsigned char *row; |
358 |
|
359 |
if (visual->c_class != TrueColor) |
360 |
return false; |
361 |
|
362 |
#if XRENDER |
363 |
XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual); |
364 |
if (format) |
365 |
alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha; |
366 |
else |
367 |
#endif |
368 |
alpha_mask = 0; |
369 |
|
370 |
width_r = ecb_popcount32 (visual->red_mask); |
371 |
width_g = ecb_popcount32 (visual->green_mask); |
372 |
width_b = ecb_popcount32 (visual->blue_mask); |
373 |
width_a = ecb_popcount32 (alpha_mask); |
374 |
|
375 |
if (width_r > 8 || width_g > 8 || width_b > 8 || width_a > 8) |
376 |
return false; |
377 |
|
378 |
sh_r = ecb_ctz32 (visual->red_mask); |
379 |
sh_g = ecb_ctz32 (visual->green_mask); |
380 |
sh_b = ecb_ctz32 (visual->blue_mask); |
381 |
sh_a = ecb_ctz32 (alpha_mask); |
382 |
|
383 |
if (width > 32767 || height > 32767) |
384 |
return false; |
385 |
|
386 |
ximage = XCreateImage (dpy, visual, depth, ZPixmap, 0, 0, |
387 |
width, height, 32, 0); |
388 |
if (!ximage) |
389 |
return false; |
390 |
|
391 |
if (height > INT_MAX / ximage->bytes_per_line |
392 |
|| !(ximage->data = (char *)malloc (height * ximage->bytes_per_line))) |
393 |
{ |
394 |
XDestroyImage (ximage); |
395 |
return false; |
396 |
} |
397 |
|
398 |
ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
399 |
|
400 |
rowstride = gdk_pixbuf_get_rowstride (pixbuf); |
401 |
channels = gdk_pixbuf_get_n_channels (pixbuf); |
402 |
row = gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * channels; |
403 |
line = ximage->data; |
404 |
|
405 |
rgba c (0, 0, 0); |
406 |
|
407 |
if (channels == 4 && alpha_mask == 0) |
408 |
{ |
409 |
pix_colors[Color_bg].get (c); |
410 |
c.r >>= 8; |
411 |
c.g >>= 8; |
412 |
c.b >>= 8; |
413 |
} |
414 |
|
415 |
for (int y = 0; y < height; y++) |
416 |
{ |
417 |
for (int x = 0; x < width; x++) |
418 |
{ |
419 |
unsigned char *pixel = row + x * channels; |
420 |
uint32_t value; |
421 |
unsigned char r, g, b, a; |
422 |
|
423 |
if (channels == 4) |
424 |
{ |
425 |
a = pixel[3]; |
426 |
r = (pixel[0] * a + c.r * (0xff - a)) / 0xff; |
427 |
g = (pixel[1] * a + c.g * (0xff - a)) / 0xff; |
428 |
b = (pixel[2] * a + c.b * (0xff - a)) / 0xff; |
429 |
} |
430 |
else |
431 |
{ |
432 |
a = 0xff; |
433 |
r = pixel[0]; |
434 |
g = pixel[1]; |
435 |
b = pixel[2]; |
436 |
} |
437 |
|
438 |
value = ((r >> (8 - width_r)) << sh_r) |
439 |
| ((g >> (8 - width_g)) << sh_g) |
440 |
| ((b >> (8 - width_b)) << sh_b) |
441 |
| ((a >> (8 - width_a)) << sh_a); |
442 |
|
443 |
if (ximage->bits_per_pixel == 32) |
444 |
((uint32_t *)line)[x] = value; |
445 |
else |
446 |
XPutPixel (ximage, x, y, value); |
447 |
} |
448 |
|
449 |
row += rowstride; |
450 |
line += ximage->bytes_per_line; |
451 |
} |
452 |
|
453 |
XPutImage (dpy, pixmap, gc, ximage, 0, 0, dst_x, dst_y, width, height); |
454 |
XDestroyImage (ximage); |
455 |
return true; |
456 |
} |
457 |
|
458 |
bool |
459 |
rxvt_term::render_image (bool transparent) |
460 |
{ |
461 |
if (!pixbuf) |
462 |
return false; |
463 |
|
464 |
if (transparent |
465 |
&& !(bg_flags & BG_HAS_RENDER)) |
466 |
return false; |
467 |
|
468 |
GdkPixbuf *result; |
469 |
|
470 |
int image_width = gdk_pixbuf_get_width (pixbuf); |
471 |
int image_height = gdk_pixbuf_get_height (pixbuf); |
472 |
|
473 |
int target_width = szHint.width; |
474 |
int target_height = szHint.height; |
475 |
int new_pmap_width = target_width; |
476 |
int new_pmap_height = target_height; |
477 |
|
478 |
int x = 0; |
479 |
int y = 0; |
480 |
int w = 0; |
481 |
int h = 0; |
482 |
|
483 |
get_image_geometry (image_width, image_height, w, h, x, y); |
484 |
|
485 |
if (!(bg_flags & BG_ROOT_ALIGN) |
486 |
&& (x >= target_width |
487 |
|| y >= target_height |
488 |
|| x + w <= 0 |
489 |
|| y + h <= 0)) |
490 |
return false; |
491 |
|
492 |
result = pixbuf; |
493 |
|
494 |
if (w != image_width |
495 |
|| h != image_height) |
496 |
{ |
497 |
result = gdk_pixbuf_scale_simple (pixbuf, |
498 |
w, h, |
499 |
GDK_INTERP_BILINEAR); |
500 |
} |
501 |
|
502 |
if (!result) |
503 |
return false; |
504 |
|
505 |
bool ret = false; |
506 |
|
507 |
XGCValues gcv; |
508 |
GC gc; |
509 |
Pixmap root_pmap; |
510 |
|
511 |
image_width = gdk_pixbuf_get_width (result); |
512 |
image_height = gdk_pixbuf_get_height (result); |
513 |
|
514 |
if (transparent) |
515 |
{ |
516 |
root_pmap = bg_pixmap; |
517 |
bg_pixmap = None; |
518 |
} |
519 |
else |
520 |
{ |
521 |
if (bg_flags & BG_TILE) |
522 |
{ |
523 |
new_pmap_width = min (image_width, target_width); |
524 |
new_pmap_height = min (image_height, target_height); |
525 |
} |
526 |
} |
527 |
|
528 |
if (bg_pixmap == None |
529 |
|| bg_pmap_width != new_pmap_width |
530 |
|| bg_pmap_height != new_pmap_height) |
531 |
{ |
532 |
if (bg_pixmap) |
533 |
XFreePixmap (dpy, bg_pixmap); |
534 |
bg_pixmap = XCreatePixmap (dpy, vt, new_pmap_width, new_pmap_height, depth); |
535 |
bg_pmap_width = new_pmap_width; |
536 |
bg_pmap_height = new_pmap_height; |
537 |
} |
538 |
|
539 |
gcv.foreground = pix_colors[Color_bg]; |
540 |
gc = XCreateGC (dpy, vt, GCForeground, &gcv); |
541 |
|
542 |
if (gc) |
543 |
{ |
544 |
if (bg_flags & BG_TILE) |
545 |
{ |
546 |
Pixmap tile = XCreatePixmap (dpy, vt, image_width, image_height, depth); |
547 |
pixbuf_to_pixmap (result, tile, gc, |
548 |
0, 0, |
549 |
0, 0, |
550 |
image_width, image_height); |
551 |
|
552 |
gcv.tile = tile; |
553 |
gcv.fill_style = FillTiled; |
554 |
gcv.ts_x_origin = x; |
555 |
gcv.ts_y_origin = y; |
556 |
XChangeGC (dpy, gc, GCFillStyle | GCTile | GCTileStipXOrigin | GCTileStipYOrigin, &gcv); |
557 |
|
558 |
XFillRectangle (dpy, bg_pixmap, gc, 0, 0, new_pmap_width, new_pmap_height); |
559 |
XFreePixmap (dpy, tile); |
560 |
} |
561 |
else |
562 |
{ |
563 |
int src_x, src_y, dst_x, dst_y; |
564 |
int dst_width, dst_height; |
565 |
|
566 |
src_x = make_clip_rectangle (x, image_width , new_pmap_width , dst_x, dst_width ); |
567 |
src_y = make_clip_rectangle (y, image_height, new_pmap_height, dst_y, dst_height); |
568 |
|
569 |
if (dst_x > 0 || dst_y > 0 |
570 |
|| dst_x + dst_width < new_pmap_width |
571 |
|| dst_y + dst_height < new_pmap_height) |
572 |
XFillRectangle (dpy, bg_pixmap, gc, 0, 0, new_pmap_width, new_pmap_height); |
573 |
|
574 |
if (dst_x < new_pmap_width && dst_y < new_pmap_height) |
575 |
pixbuf_to_pixmap (result, bg_pixmap, gc, |
576 |
src_x, src_y, |
577 |
dst_x, dst_y, |
578 |
dst_width, dst_height); |
579 |
} |
580 |
|
581 |
#if XRENDER |
582 |
if (transparent) |
583 |
{ |
584 |
XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual); |
585 |
|
586 |
Picture src = XRenderCreatePicture (dpy, root_pmap, format, 0, 0); |
587 |
|
588 |
Picture dst = XRenderCreatePicture (dpy, bg_pixmap, format, 0, 0); |
589 |
|
590 |
Picture mask = create_xrender_mask (dpy, vt, False, False); |
591 |
|
592 |
XRenderColor mask_c; |
593 |
|
594 |
mask_c.alpha = 0x8000; |
595 |
mask_c.red = |
596 |
mask_c.green = |
597 |
mask_c.blue = 0; |
598 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
599 |
|
600 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, target_width, target_height); |
601 |
|
602 |
XRenderFreePicture (dpy, src); |
603 |
XRenderFreePicture (dpy, dst); |
604 |
XRenderFreePicture (dpy, mask); |
605 |
} |
606 |
#endif |
607 |
|
608 |
XFreeGC (dpy, gc); |
609 |
|
610 |
ret = true; |
611 |
} |
612 |
|
613 |
if (result != pixbuf) |
614 |
g_object_unref (result); |
615 |
|
616 |
if (transparent) |
617 |
XFreePixmap (dpy, root_pmap); |
618 |
|
619 |
return ret; |
620 |
} |
621 |
# endif /* HAVE_PIXBUF */ |
622 |
|
623 |
bool |
624 |
rxvt_term::bg_set_file (const char *file) |
625 |
{ |
626 |
if (!file || !*file) |
627 |
return false; |
628 |
|
629 |
bool ret = false; |
630 |
const char *p = strchr (file, ';'); |
631 |
|
632 |
if (p) |
633 |
{ |
634 |
size_t len = p - file; |
635 |
char *f = rxvt_temp_buf<char> (len + 1); |
636 |
memcpy (f, file, len); |
637 |
f[len] = '\0'; |
638 |
file = f; |
639 |
} |
640 |
|
641 |
# ifdef HAVE_PIXBUF |
642 |
GdkPixbuf *image = gdk_pixbuf_new_from_file (file, NULL); |
643 |
if (image) |
644 |
{ |
645 |
if (pixbuf) |
646 |
g_object_unref (pixbuf); |
647 |
pixbuf = image; |
648 |
bg_flags |= BG_IS_FROM_FILE; |
649 |
ret = true; |
650 |
} |
651 |
# endif |
652 |
|
653 |
if (ret) |
654 |
{ |
655 |
if (p) |
656 |
bg_set_geometry (p + 1); |
657 |
else |
658 |
bg_set_default_geometry (); |
659 |
} |
660 |
|
661 |
return ret; |
662 |
} |
663 |
|
664 |
# endif /* BG_IMAGE_FROM_FILE */ |
665 |
|
666 |
# ifdef ENABLE_TRANSPARENCY |
667 |
bool |
668 |
rxvt_term::bg_set_blur (const char *geom) |
669 |
{ |
670 |
bool changed = false; |
671 |
unsigned int hr, vr; |
672 |
int junk; |
673 |
int geom_flags = XParseGeometry (geom, &junk, &junk, &hr, &vr); |
674 |
|
675 |
if (!(geom_flags & WidthValue)) |
676 |
hr = 1; |
677 |
if (!(geom_flags & HeightValue)) |
678 |
vr = hr; |
679 |
|
680 |
min_it (hr, 128); |
681 |
min_it (vr, 128); |
682 |
|
683 |
if (h_blurRadius != hr) |
684 |
{ |
685 |
changed = true; |
686 |
h_blurRadius = hr; |
687 |
} |
688 |
|
689 |
if (v_blurRadius != vr) |
690 |
{ |
691 |
changed = true; |
692 |
v_blurRadius = vr; |
693 |
} |
694 |
|
695 |
if (h_blurRadius && v_blurRadius) |
696 |
bg_flags |= BG_NEEDS_BLUR; |
697 |
else |
698 |
bg_flags &= ~BG_NEEDS_BLUR; |
699 |
|
700 |
return changed; |
701 |
} |
702 |
|
703 |
void |
704 |
rxvt_term::set_tint_shade_flags () |
705 |
{ |
706 |
if (shade != 100 || (bg_flags & BG_TINT_SET)) |
707 |
bg_flags |= BG_NEEDS_TINT; |
708 |
else |
709 |
bg_flags &= ~BG_NEEDS_TINT; |
710 |
} |
711 |
|
712 |
bool |
713 |
rxvt_term::bg_set_tint (rxvt_color &new_tint) |
714 |
{ |
715 |
if (!(bg_flags & BG_TINT_SET) || tint != new_tint) |
716 |
{ |
717 |
tint = new_tint; |
718 |
bg_flags |= BG_TINT_SET; |
719 |
|
720 |
rgba c; |
721 |
tint.get (c); |
722 |
if ((c.r <= 0x00ff || c.r >= 0xff00) |
723 |
&& (c.g <= 0x00ff || c.g >= 0xff00) |
724 |
&& (c.b <= 0x00ff || c.b >= 0xff00)) |
725 |
bg_flags |= BG_TINT_BITAND; |
726 |
else |
727 |
bg_flags &= ~BG_TINT_BITAND; |
728 |
|
729 |
set_tint_shade_flags (); |
730 |
return true; |
731 |
} |
732 |
|
733 |
return false; |
734 |
} |
735 |
|
736 |
bool |
737 |
rxvt_term::bg_set_shade (const char *shade_str) |
738 |
{ |
739 |
int new_shade = atoi (shade_str); |
740 |
|
741 |
clamp_it (new_shade, -100, 200); |
742 |
if (new_shade < 0) |
743 |
new_shade = 200 - (100 + new_shade); |
744 |
|
745 |
if (new_shade != shade) |
746 |
{ |
747 |
shade = new_shade; |
748 |
set_tint_shade_flags (); |
749 |
return true; |
750 |
} |
751 |
|
752 |
return false; |
753 |
} |
754 |
|
755 |
#if XRENDER |
756 |
static void |
757 |
get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) |
758 |
{ |
759 |
double sigma = radius / 2.0; |
760 |
double scale = sqrt (2.0 * M_PI) * sigma; |
761 |
double sum = 0.0; |
762 |
|
763 |
for (int i = 0; i < width; i++) |
764 |
{ |
765 |
double x = i - width / 2; |
766 |
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
767 |
sum += kernel[i]; |
768 |
} |
769 |
|
770 |
params[0] = XDoubleToFixed (width); |
771 |
params[1] = XDoubleToFixed (1); |
772 |
|
773 |
for (int i = 0; i < width; i++) |
774 |
params[i+2] = XDoubleToFixed (kernel[i] / sum); |
775 |
} |
776 |
#endif |
777 |
|
778 |
bool |
779 |
rxvt_term::blur_pixmap (Pixmap pixmap, Visual *visual, int width, int height, int depth) |
780 |
{ |
781 |
bool ret = false; |
782 |
#if XRENDER |
783 |
if (!(bg_flags & BG_HAS_RENDER_CONV)) |
784 |
return false; |
785 |
|
786 |
int size = max (h_blurRadius, v_blurRadius) * 2 + 1; |
787 |
double *kernel = (double *)malloc (size * sizeof (double)); |
788 |
XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
789 |
|
790 |
XRenderPictureAttributes pa; |
791 |
XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual); |
792 |
|
793 |
pa.repeat = RepeatPad; |
794 |
Picture src = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa); |
795 |
Pixmap tmp = XCreatePixmap (dpy, pixmap, width, height, depth); |
796 |
Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa); |
797 |
XFreePixmap (dpy, tmp); |
798 |
|
799 |
if (kernel && params) |
800 |
{ |
801 |
size = h_blurRadius * 2 + 1; |
802 |
get_gaussian_kernel (h_blurRadius, size, kernel, params); |
803 |
|
804 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
805 |
XRenderComposite (dpy, |
806 |
PictOpSrc, |
807 |
src, |
808 |
None, |
809 |
dst, |
810 |
0, 0, |
811 |
0, 0, |
812 |
0, 0, |
813 |
width, height); |
814 |
|
815 |
::swap (src, dst); |
816 |
|
817 |
size = v_blurRadius * 2 + 1; |
818 |
get_gaussian_kernel (v_blurRadius, size, kernel, params); |
819 |
::swap (params[0], params[1]); |
820 |
|
821 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
822 |
XRenderComposite (dpy, |
823 |
PictOpSrc, |
824 |
src, |
825 |
None, |
826 |
dst, |
827 |
0, 0, |
828 |
0, 0, |
829 |
0, 0, |
830 |
width, height); |
831 |
|
832 |
ret = true; |
833 |
} |
834 |
|
835 |
free (kernel); |
836 |
free (params); |
837 |
XRenderFreePicture (dpy, src); |
838 |
XRenderFreePicture (dpy, dst); |
839 |
#endif |
840 |
return ret; |
841 |
} |
842 |
|
843 |
bool |
844 |
rxvt_term::tint_pixmap (Pixmap pixmap, Visual *visual, int width, int height) |
845 |
{ |
846 |
bool ret = false; |
847 |
|
848 |
if (shade == 100 && (bg_flags & BG_TINT_BITAND)) |
849 |
{ |
850 |
XGCValues gcv; |
851 |
GC gc; |
852 |
|
853 |
/* In this case we can tint image server-side getting significant |
854 |
* performance improvements, as we eliminate XImage transfer |
855 |
*/ |
856 |
gcv.foreground = Pixel (tint); |
857 |
gcv.function = GXand; |
858 |
gcv.fill_style = FillSolid; |
859 |
gc = XCreateGC (dpy, pixmap, GCFillStyle | GCForeground | GCFunction, &gcv); |
860 |
if (gc) |
861 |
{ |
862 |
XFillRectangle (dpy, pixmap, gc, 0, 0, width, height); |
863 |
ret = true; |
864 |
XFreeGC (dpy, gc); |
865 |
} |
866 |
} |
867 |
# if XRENDER |
868 |
else if (bg_flags & BG_HAS_RENDER) |
869 |
{ |
870 |
rgba c (rgba::MAX_CC, rgba::MAX_CC, rgba::MAX_CC); |
871 |
|
872 |
if (bg_flags & BG_TINT_SET) |
873 |
tint.get (c); |
874 |
|
875 |
if (shade <= 100) |
876 |
{ |
877 |
c.r = c.r * shade / 100; |
878 |
c.g = c.g * shade / 100; |
879 |
c.b = c.b * shade / 100; |
880 |
} |
881 |
else |
882 |
{ |
883 |
c.r = c.r * (200 - shade) / 100; |
884 |
c.g = c.g * (200 - shade) / 100; |
885 |
c.b = c.b * (200 - shade) / 100; |
886 |
} |
887 |
|
888 |
XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual); |
889 |
|
890 |
Picture back_pic = XRenderCreatePicture (dpy, pixmap, format, 0, 0); |
891 |
|
892 |
Picture overlay_pic = create_xrender_mask (dpy, pixmap, True, False); |
893 |
|
894 |
Picture mask_pic = create_xrender_mask (dpy, pixmap, True, True); |
895 |
|
896 |
XRenderColor mask_c; |
897 |
|
898 |
mask_c.alpha = 0xffff; |
899 |
mask_c.red = |
900 |
mask_c.green = |
901 |
mask_c.blue = 0; |
902 |
XRenderFillRectangle (dpy, PictOpSrc, overlay_pic, &mask_c, 0, 0, 1, 1); |
903 |
|
904 |
mask_c.alpha = 0; |
905 |
mask_c.red = 0xffff - c.r; |
906 |
mask_c.green = 0xffff - c.g; |
907 |
mask_c.blue = 0xffff - c.b; |
908 |
XRenderFillRectangle (dpy, PictOpSrc, mask_pic, &mask_c, 0, 0, 1, 1); |
909 |
|
910 |
XRenderComposite (dpy, PictOpOver, overlay_pic, mask_pic, back_pic, 0, 0, 0, 0, 0, 0, width, height); |
911 |
|
912 |
if (shade > 100) |
913 |
{ |
914 |
mask_c.alpha = 0; |
915 |
mask_c.red = |
916 |
mask_c.green = |
917 |
mask_c.blue = 0xffff * (shade - 100) / 100; |
918 |
XRenderFillRectangle (dpy, PictOpSrc, overlay_pic, &mask_c, 0, 0, 1, 1); |
919 |
|
920 |
XRenderComposite (dpy, PictOpOver, overlay_pic, None, back_pic, 0, 0, 0, 0, 0, 0, width, height); |
921 |
} |
922 |
|
923 |
ret = true; |
924 |
|
925 |
XRenderFreePicture (dpy, mask_pic); |
926 |
XRenderFreePicture (dpy, overlay_pic); |
927 |
XRenderFreePicture (dpy, back_pic); |
928 |
} |
929 |
# endif |
930 |
|
931 |
return ret; |
932 |
} |
933 |
|
934 |
/* |
935 |
* Builds a pixmap of the same size as the terminal window that contains |
936 |
* the tiled portion of the root pixmap that is supposed to be covered by |
937 |
* our window. |
938 |
*/ |
939 |
bool |
940 |
rxvt_term::make_transparency_pixmap () |
941 |
{ |
942 |
bool ret = false; |
943 |
|
944 |
/* root dimensions may change from call to call - but Display structure should |
945 |
* be always up-to-date, so let's use it : |
946 |
*/ |
947 |
int screen = display->screen; |
948 |
int root_depth = DefaultDepth (dpy, screen); |
949 |
int root_width = DisplayWidth (dpy, screen); |
950 |
int root_height = DisplayHeight (dpy, screen); |
951 |
unsigned int root_pmap_width, root_pmap_height; |
952 |
int window_width = szHint.width; |
953 |
int window_height = szHint.height; |
954 |
int sx, sy; |
955 |
XGCValues gcv; |
956 |
GC gc; |
957 |
|
958 |
sx = target_x; |
959 |
sy = target_y; |
960 |
|
961 |
/* check if we are outside of the visible part of the virtual screen : */ |
962 |
if (sx + window_width <= 0 || sy + window_height <= 0 |
963 |
|| sx >= root_width || sy >= root_height) |
964 |
return 0; |
965 |
|
966 |
// validate root pixmap and get its size |
967 |
if (root_pixmap != None) |
968 |
{ |
969 |
Window wdummy; |
970 |
int idummy; |
971 |
unsigned int udummy; |
972 |
|
973 |
allowedxerror = -1; |
974 |
|
975 |
if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pmap_width, &root_pmap_height, &udummy, &udummy)) |
976 |
root_pixmap = None; |
977 |
|
978 |
allowedxerror = 0; |
979 |
} |
980 |
|
981 |
Pixmap recoded_root_pmap = root_pixmap; |
982 |
|
983 |
if (root_pixmap != None && root_depth != depth) |
984 |
{ |
985 |
#if XRENDER |
986 |
if (bg_flags & BG_HAS_RENDER) |
987 |
{ |
988 |
recoded_root_pmap = XCreatePixmap (dpy, vt, root_pmap_width, root_pmap_height, depth); |
989 |
|
990 |
XRenderPictFormat *src_format = XRenderFindVisualFormat (dpy, DefaultVisual (dpy, screen)); |
991 |
Picture src = XRenderCreatePicture (dpy, root_pixmap, src_format, 0, 0); |
992 |
|
993 |
XRenderPictFormat *dst_format = XRenderFindVisualFormat (dpy, visual); |
994 |
Picture dst = XRenderCreatePicture (dpy, recoded_root_pmap, dst_format, 0, 0); |
995 |
|
996 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, root_pmap_width, root_pmap_height); |
997 |
|
998 |
XRenderFreePicture (dpy, src); |
999 |
XRenderFreePicture (dpy, dst); |
1000 |
} |
1001 |
else |
1002 |
#endif |
1003 |
recoded_root_pmap = None; |
1004 |
} |
1005 |
|
1006 |
if (recoded_root_pmap == None) |
1007 |
return 0; |
1008 |
|
1009 |
if (bg_pixmap == None |
1010 |
|| bg_pmap_width != window_width |
1011 |
|| bg_pmap_height != window_height) |
1012 |
{ |
1013 |
if (bg_pixmap) |
1014 |
XFreePixmap (dpy, bg_pixmap); |
1015 |
bg_pixmap = XCreatePixmap (dpy, vt, window_width, window_height, depth); |
1016 |
bg_pmap_width = window_width; |
1017 |
bg_pmap_height = window_height; |
1018 |
} |
1019 |
|
1020 |
/* straightforward pixmap copy */ |
1021 |
while (sx < 0) sx += root_pmap_width; |
1022 |
while (sy < 0) sy += root_pmap_height; |
1023 |
|
1024 |
gcv.tile = recoded_root_pmap; |
1025 |
gcv.fill_style = FillTiled; |
1026 |
gcv.ts_x_origin = -sx; |
1027 |
gcv.ts_y_origin = -sy; |
1028 |
gc = XCreateGC (dpy, vt, GCFillStyle | GCTile | GCTileStipXOrigin | GCTileStipYOrigin, &gcv); |
1029 |
|
1030 |
if (gc) |
1031 |
{ |
1032 |
XFillRectangle (dpy, bg_pixmap, gc, 0, 0, window_width, window_height); |
1033 |
ret = true; |
1034 |
unsigned long tr_flags = bg_flags & BG_EFFECTS_FLAGS; |
1035 |
|
1036 |
if (!(bg_flags & BG_CLIENT_RENDER)) |
1037 |
{ |
1038 |
if (bg_flags & BG_NEEDS_BLUR) |
1039 |
{ |
1040 |
if (blur_pixmap (bg_pixmap, visual, window_width, window_height, depth)) |
1041 |
tr_flags &= ~BG_NEEDS_BLUR; |
1042 |
} |
1043 |
if (bg_flags & BG_NEEDS_TINT) |
1044 |
{ |
1045 |
if (tint_pixmap (bg_pixmap, visual, window_width, window_height)) |
1046 |
tr_flags &= ~BG_NEEDS_TINT; |
1047 |
} |
1048 |
if (tr_flags & BG_NEEDS_TINT) |
1049 |
{ |
1050 |
XImage *ximage = XGetImage (dpy, bg_pixmap, 0, 0, bg_pmap_width, bg_pmap_height, AllPlanes, ZPixmap); |
1051 |
if (ximage) |
1052 |
{ |
1053 |
/* our own client-side tinting */ |
1054 |
tint_ximage (DefaultVisual (dpy, display->screen), ximage); |
1055 |
|
1056 |
XPutImage (dpy, bg_pixmap, gc, ximage, 0, 0, 0, 0, ximage->width, ximage->height); |
1057 |
XDestroyImage (ximage); |
1058 |
} |
1059 |
} |
1060 |
} /* server side rendering completed */ |
1061 |
|
1062 |
XFreeGC (dpy, gc); |
1063 |
} |
1064 |
|
1065 |
if (recoded_root_pmap != root_pixmap) |
1066 |
XFreePixmap (dpy, recoded_root_pmap); |
1067 |
|
1068 |
return ret; |
1069 |
} |
1070 |
|
1071 |
void |
1072 |
rxvt_term::bg_set_root_pixmap () |
1073 |
{ |
1074 |
Pixmap new_root_pixmap = get_pixmap_property (xa[XA_XROOTPMAP_ID]); |
1075 |
if (new_root_pixmap == None) |
1076 |
new_root_pixmap = get_pixmap_property (xa[XA_ESETROOT_PMAP_ID]); |
1077 |
|
1078 |
root_pixmap = new_root_pixmap; |
1079 |
} |
1080 |
# endif /* ENABLE_TRANSPARENCY */ |
1081 |
|
1082 |
bool |
1083 |
rxvt_term::bg_render () |
1084 |
{ |
1085 |
bool transparent = false; |
1086 |
|
1087 |
bg_invalidate (); |
1088 |
# ifdef ENABLE_TRANSPARENCY |
1089 |
if (bg_flags & BG_IS_TRANSPARENT) |
1090 |
{ |
1091 |
/* we need to re-generate transparency pixmap in that case ! */ |
1092 |
transparent = make_transparency_pixmap (); |
1093 |
if (transparent) |
1094 |
bg_flags |= BG_IS_VALID; |
1095 |
} |
1096 |
# endif |
1097 |
|
1098 |
# ifdef BG_IMAGE_FROM_FILE |
1099 |
if (bg_flags & BG_IS_FROM_FILE) |
1100 |
{ |
1101 |
if (render_image (transparent)) |
1102 |
bg_flags |= BG_IS_VALID; |
1103 |
} |
1104 |
# endif |
1105 |
|
1106 |
if (!(bg_flags & BG_IS_VALID)) |
1107 |
{ |
1108 |
if (bg_pixmap != None) |
1109 |
{ |
1110 |
XFreePixmap (dpy, bg_pixmap); |
1111 |
bg_pixmap = None; |
1112 |
} |
1113 |
} |
1114 |
|
1115 |
scr_recolour (false); |
1116 |
bg_flags |= BG_NEEDS_REFRESH; |
1117 |
|
1118 |
bg_valid_since = ev::now (); |
1119 |
|
1120 |
return true; |
1121 |
} |
1122 |
|
1123 |
void |
1124 |
rxvt_term::bg_init () |
1125 |
{ |
1126 |
#ifdef ENABLE_TRANSPARENCY |
1127 |
shade = 100; |
1128 |
#endif |
1129 |
|
1130 |
bg_flags &= ~(BG_HAS_RENDER | BG_HAS_RENDER_CONV); |
1131 |
#if XRENDER |
1132 |
int major, minor; |
1133 |
if (XRenderQueryVersion (dpy, &major, &minor)) |
1134 |
bg_flags |= BG_HAS_RENDER; |
1135 |
XFilters *filters = XRenderQueryFilters (dpy, vt); |
1136 |
if (filters) |
1137 |
{ |
1138 |
for (int i = 0; i < filters->nfilter; i++) |
1139 |
if (!strcmp (filters->filter[i], FilterConvolution)) |
1140 |
bg_flags |= BG_HAS_RENDER_CONV; |
1141 |
|
1142 |
XFree (filters); |
1143 |
} |
1144 |
#endif |
1145 |
} |
1146 |
|
1147 |
#endif /* HAVE_BG_PIXMAP */ |
1148 |
|
1149 |
#ifdef ENABLE_TRANSPARENCY |
1150 |
/* based on code from aterm-0.4.2 */ |
1151 |
|
1152 |
static inline void |
1153 |
fill_lut (uint32_t *lookup, uint32_t mask, int sh, unsigned short low, unsigned short high) |
1154 |
{ |
1155 |
for (int i = 0; i <= mask >> sh; i++) |
1156 |
{ |
1157 |
uint32_t tmp; |
1158 |
tmp = i * high; |
1159 |
tmp += (mask >> sh) * low; |
1160 |
lookup[i] = (tmp / 0xffff) << sh; |
1161 |
} |
1162 |
} |
1163 |
|
1164 |
void |
1165 |
rxvt_term::tint_ximage (Visual *visual, XImage *ximage) |
1166 |
{ |
1167 |
unsigned int size_r, size_g, size_b; |
1168 |
int sh_r, sh_g, sh_b; |
1169 |
uint32_t mask_r, mask_g, mask_b; |
1170 |
uint32_t *lookup, *lookup_r, *lookup_g, *lookup_b; |
1171 |
unsigned short low; |
1172 |
int host_byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
1173 |
|
1174 |
if (visual->c_class != TrueColor || ximage->format != ZPixmap) return; |
1175 |
|
1176 |
/* for convenience */ |
1177 |
mask_r = visual->red_mask; |
1178 |
mask_g = visual->green_mask; |
1179 |
mask_b = visual->blue_mask; |
1180 |
|
1181 |
/* boring lookup table pre-initialization */ |
1182 |
sh_r = ecb_ctz32 (mask_r); |
1183 |
sh_g = ecb_ctz32 (mask_g); |
1184 |
sh_b = ecb_ctz32 (mask_b); |
1185 |
|
1186 |
size_r = mask_r >> sh_r; |
1187 |
size_g = mask_g >> sh_g; |
1188 |
size_b = mask_b >> sh_b; |
1189 |
|
1190 |
if (size_r++ > 255 || size_g++ > 255 || size_b++ > 255) |
1191 |
return; |
1192 |
|
1193 |
lookup = (uint32_t *)malloc (sizeof (uint32_t) * (size_r + size_g + size_b)); |
1194 |
lookup_r = lookup; |
1195 |
lookup_g = lookup + size_r; |
1196 |
lookup_b = lookup + size_r + size_g; |
1197 |
|
1198 |
rgba c (rgba::MAX_CC, rgba::MAX_CC, rgba::MAX_CC); |
1199 |
|
1200 |
if (bg_flags & BG_TINT_SET) |
1201 |
tint.get (c); |
1202 |
|
1203 |
/* prepare limits for color transformation (each channel is handled separately) */ |
1204 |
if (shade > 100) |
1205 |
{ |
1206 |
c.r = c.r * (200 - shade) / 100; |
1207 |
c.g = c.g * (200 - shade) / 100; |
1208 |
c.b = c.b * (200 - shade) / 100; |
1209 |
|
1210 |
low = 0xffff * (shade - 100) / 100; |
1211 |
} |
1212 |
else |
1213 |
{ |
1214 |
c.r = c.r * shade / 100; |
1215 |
c.g = c.g * shade / 100; |
1216 |
c.b = c.b * shade / 100; |
1217 |
|
1218 |
low = 0; |
1219 |
} |
1220 |
|
1221 |
/* fill our lookup tables */ |
1222 |
fill_lut (lookup_r, mask_r, sh_r, low, c.r); |
1223 |
fill_lut (lookup_g, mask_g, sh_g, low, c.g); |
1224 |
fill_lut (lookup_b, mask_b, sh_b, low, c.b); |
1225 |
|
1226 |
/* apply table to input image (replacing colors by newly calculated ones) */ |
1227 |
if (ximage->bits_per_pixel == 32 |
1228 |
&& ximage->byte_order == host_byte_order) |
1229 |
{ |
1230 |
char *line = ximage->data; |
1231 |
|
1232 |
for (int y = 0; y < ximage->height; y++) |
1233 |
{ |
1234 |
uint32_t *p = (uint32_t *)line; |
1235 |
for (int x = 0; x < ximage->width; x++) |
1236 |
{ |
1237 |
*p = lookup_r[(*p & mask_r) >> sh_r] | |
1238 |
lookup_g[(*p & mask_g) >> sh_g] | |
1239 |
lookup_b[(*p & mask_b) >> sh_b]; |
1240 |
p++; |
1241 |
} |
1242 |
line += ximage->bytes_per_line; |
1243 |
} |
1244 |
} |
1245 |
else |
1246 |
{ |
1247 |
for (int y = 0; y < ximage->height; y++) |
1248 |
for (int x = 0; x < ximage->width; x++) |
1249 |
{ |
1250 |
unsigned long pixel = XGetPixel (ximage, x, y); |
1251 |
pixel = lookup_r[(pixel & mask_r) >> sh_r] | |
1252 |
lookup_g[(pixel & mask_g) >> sh_g] | |
1253 |
lookup_b[(pixel & mask_b) >> sh_b]; |
1254 |
XPutPixel (ximage, x, y, pixel); |
1255 |
} |
1256 |
} |
1257 |
|
1258 |
free (lookup); |
1259 |
} |
1260 |
#endif /* ENABLE_TRANSPARENCY */ |