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 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 |
int diff = window_size - image_size; |
129 |
int smaller = min (image_size, window_size); |
130 |
|
131 |
if (align >= 0 && align <= 100) |
132 |
return diff * align / 100; |
133 |
else if (align > 100 && align <= 200) |
134 |
return (align - 100) * smaller / 100 + window_size - smaller; |
135 |
else if (align >= -100 && align < 0) |
136 |
return (align + 100) * smaller / 100 - image_size; |
137 |
return 0; |
138 |
} |
139 |
|
140 |
static inline int |
141 |
make_clip_rectangle (int pos, int size, int target_size, int &dst_pos, int &dst_size) |
142 |
{ |
143 |
int src_pos = 0; |
144 |
dst_pos = pos; |
145 |
dst_size = size; |
146 |
if (pos < 0) |
147 |
{ |
148 |
src_pos = -pos; |
149 |
dst_pos = 0; |
150 |
dst_size += pos; |
151 |
} |
152 |
|
153 |
min_it (dst_size, target_size - dst_pos); |
154 |
return src_pos; |
155 |
} |
156 |
|
157 |
bool |
158 |
rxvt_term::bg_set_geometry (const char *geom, bool update) |
159 |
{ |
160 |
bool changed = false; |
161 |
int geom_flags = 0; |
162 |
int x = h_align; |
163 |
int y = v_align; |
164 |
unsigned int w = h_scale; |
165 |
unsigned int h = v_scale; |
166 |
unsigned long new_flags = 0; |
167 |
|
168 |
if (geom == NULL) |
169 |
return false; |
170 |
|
171 |
if (geom[0]) |
172 |
{ |
173 |
char **arr = rxvt_strsplit (':', geom); |
174 |
|
175 |
for (int i = 0; arr[i]; i++) |
176 |
{ |
177 |
if (!strcasecmp (arr[i], "style=tiled")) |
178 |
{ |
179 |
new_flags = BG_TILE; |
180 |
w = h = noScale; |
181 |
x = y = 0; |
182 |
geom_flags = WidthValue|HeightValue|XValue|YValue; |
183 |
} |
184 |
else if (!strcasecmp (arr[i], "style=aspect-stretched")) |
185 |
{ |
186 |
new_flags = BG_KEEP_ASPECT; |
187 |
w = h = windowScale; |
188 |
x = y = centerAlign; |
189 |
geom_flags = WidthValue|HeightValue|XValue|YValue; |
190 |
} |
191 |
else if (!strcasecmp (arr[i], "style=stretched")) |
192 |
{ |
193 |
new_flags = 0; |
194 |
w = h = windowScale; |
195 |
geom_flags = WidthValue|HeightValue; |
196 |
} |
197 |
else if (!strcasecmp (arr[i], "style=centered")) |
198 |
{ |
199 |
new_flags = 0; |
200 |
w = h = noScale; |
201 |
x = y = centerAlign; |
202 |
geom_flags = WidthValue|HeightValue|XValue|YValue; |
203 |
} |
204 |
else if (!strcasecmp (arr[i], "style=root-tiled")) |
205 |
{ |
206 |
new_flags = BG_TILE|BG_ROOT_ALIGN; |
207 |
w = h = noScale; |
208 |
geom_flags = WidthValue|HeightValue; |
209 |
} |
210 |
else if (!strcasecmp (arr[i], "op=tile")) |
211 |
new_flags |= BG_TILE; |
212 |
else if (!strcasecmp (arr[i], "op=keep-aspect")) |
213 |
new_flags |= BG_KEEP_ASPECT; |
214 |
else if (!strcasecmp (arr[i], "op=root-align")) |
215 |
new_flags |= BG_ROOT_ALIGN; |
216 |
|
217 |
// deprecated |
218 |
else if (!strcasecmp (arr[i], "tile")) |
219 |
{ |
220 |
new_flags |= BG_TILE; |
221 |
w = h = noScale; |
222 |
geom_flags |= WidthValue|HeightValue; |
223 |
} |
224 |
else if (!strcasecmp (arr[i], "propscale")) |
225 |
{ |
226 |
new_flags |= BG_KEEP_ASPECT; |
227 |
w = h = windowScale; |
228 |
geom_flags |= WidthValue|HeightValue; |
229 |
} |
230 |
else if (!strcasecmp (arr[i], "hscale")) |
231 |
{ |
232 |
new_flags |= BG_TILE; |
233 |
w = windowScale; |
234 |
h = noScale; |
235 |
geom_flags |= WidthValue|HeightValue; |
236 |
} |
237 |
else if (!strcasecmp (arr[i], "vscale")) |
238 |
{ |
239 |
new_flags |= BG_TILE; |
240 |
h = windowScale; |
241 |
w = noScale; |
242 |
geom_flags |= WidthValue|HeightValue; |
243 |
} |
244 |
else if (!strcasecmp (arr[i], "scale")) |
245 |
{ |
246 |
w = h = windowScale; |
247 |
geom_flags |= WidthValue|HeightValue; |
248 |
} |
249 |
else if (!strcasecmp (arr[i], "auto")) |
250 |
{ |
251 |
w = h = windowScale; |
252 |
x = y = centerAlign; |
253 |
geom_flags |= WidthValue|HeightValue|XValue|YValue; |
254 |
} |
255 |
else if (!strcasecmp (arr[i], "root")) |
256 |
{ |
257 |
new_flags |= BG_TILE|BG_ROOT_ALIGN; |
258 |
w = h = noScale; |
259 |
geom_flags |= WidthValue|HeightValue; |
260 |
} |
261 |
|
262 |
else |
263 |
geom_flags |= XParseGeometry (arr[i], &x, &y, &w, &h); |
264 |
} /* done parsing ops */ |
265 |
|
266 |
rxvt_free_strsplit (arr); |
267 |
} |
268 |
|
269 |
new_flags |= bg_flags & ~BG_GEOMETRY_FLAGS; |
270 |
|
271 |
if (!update) |
272 |
{ |
273 |
if (!(geom_flags & XValue)) |
274 |
x = y = defaultAlign; |
275 |
else if (!(geom_flags & YValue)) |
276 |
y = x; |
277 |
|
278 |
if (!(geom_flags & (WidthValue|HeightValue))) |
279 |
w = h = defaultScale; |
280 |
else if (!(geom_flags & HeightValue)) |
281 |
h = w; |
282 |
else if (!(geom_flags & WidthValue)) |
283 |
w = h; |
284 |
} |
285 |
|
286 |
min_it (w, 1000); |
287 |
min_it (h, 1000); |
288 |
clamp_it (x, -100, 200); |
289 |
clamp_it (y, -100, 200); |
290 |
|
291 |
if (bg_flags != new_flags |
292 |
|| h_scale != w |
293 |
|| v_scale != h |
294 |
|| h_align != x |
295 |
|| v_align != y) |
296 |
{ |
297 |
bg_flags = new_flags; |
298 |
h_scale = w; |
299 |
v_scale = h; |
300 |
h_align = x; |
301 |
v_align = y; |
302 |
changed = true; |
303 |
} |
304 |
|
305 |
return changed; |
306 |
} |
307 |
|
308 |
void |
309 |
rxvt_term::get_image_geometry (int image_width, int image_height, int &w, int &h, int &x, int &y) |
310 |
{ |
311 |
int target_width = szHint.width; |
312 |
int target_height = szHint.height; |
313 |
|
314 |
w = h_scale * target_width / 100; |
315 |
h = v_scale * target_height / 100; |
316 |
|
317 |
if (bg_flags & BG_KEEP_ASPECT) |
318 |
{ |
319 |
float scale = (float)w / image_width; |
320 |
min_it (scale, (float)h / image_height); |
321 |
w = image_width * scale + 0.5; |
322 |
h = image_height * scale + 0.5; |
323 |
} |
324 |
|
325 |
if (!w) w = image_width; |
326 |
if (!h) h = image_height; |
327 |
|
328 |
if (bg_flags & BG_ROOT_ALIGN) |
329 |
{ |
330 |
x = -target_x; |
331 |
y = -target_y; |
332 |
} |
333 |
else |
334 |
{ |
335 |
x = make_align_position (h_align, target_width, w); |
336 |
y = make_align_position (v_align, target_height, h); |
337 |
} |
338 |
|
339 |
bg_flags &= ~BG_IS_SIZE_SENSITIVE; |
340 |
if (!(bg_flags & BG_TILE) |
341 |
|| h_scale || v_scale |
342 |
|| (!(bg_flags & BG_ROOT_ALIGN) && (h_align || v_align)) |
343 |
|| w > target_width || h > target_height) |
344 |
bg_flags |= BG_IS_SIZE_SENSITIVE; |
345 |
} |
346 |
|
347 |
# ifdef HAVE_PIXBUF |
348 |
bool |
349 |
rxvt_term::pixbuf_to_pixmap (GdkPixbuf *pixbuf, Pixmap pixmap, GC gc, |
350 |
int src_x, int src_y, int dst_x, int dst_y, |
351 |
unsigned int width, unsigned int height) |
352 |
{ |
353 |
XImage *ximage; |
354 |
char *data, *line; |
355 |
int bytes_per_pixel; |
356 |
int width_r, width_g, width_b; |
357 |
int sh_r, sh_g, sh_b; |
358 |
int rowstride; |
359 |
int channels; |
360 |
unsigned char *row; |
361 |
|
362 |
if (visual->c_class != TrueColor) |
363 |
return false; |
364 |
|
365 |
if (depth == 24 || depth == 32) |
366 |
bytes_per_pixel = 4; |
367 |
else if (depth == 15 || depth == 16) |
368 |
bytes_per_pixel = 2; |
369 |
else |
370 |
return false; |
371 |
|
372 |
width_r = ecb_popcount32 (visual->red_mask); |
373 |
width_g = ecb_popcount32 (visual->green_mask); |
374 |
width_b = ecb_popcount32 (visual->blue_mask); |
375 |
|
376 |
if (width_r > 8 || width_g > 8 || width_b > 8) |
377 |
return false; |
378 |
|
379 |
sh_r = ecb_ctz32 (visual->red_mask); |
380 |
sh_g = ecb_ctz32 (visual->green_mask); |
381 |
sh_b = ecb_ctz32 (visual->blue_mask); |
382 |
|
383 |
if (width > INT_MAX / height / bytes_per_pixel) |
384 |
return false; |
385 |
|
386 |
data = (char *)malloc (width * height * bytes_per_pixel); |
387 |
if (!data) |
388 |
return false; |
389 |
|
390 |
ximage = XCreateImage (dpy, visual, depth, ZPixmap, 0, data, |
391 |
width, height, bytes_per_pixel * 8, 0); |
392 |
if (!ximage) |
393 |
{ |
394 |
free (data); |
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 = data; |
404 |
|
405 |
for (int y = 0; y < height; y++) |
406 |
{ |
407 |
for (int x = 0; x < width; x++) |
408 |
{ |
409 |
unsigned char *pixel = row + x * channels; |
410 |
uint32_t value; |
411 |
|
412 |
value = ((pixel[0] >> (8 - width_r)) << sh_r) |
413 |
| ((pixel[1] >> (8 - width_g)) << sh_g) |
414 |
| ((pixel[2] >> (8 - width_b)) << sh_b); |
415 |
|
416 |
if (bytes_per_pixel == 4) |
417 |
((uint32_t *)line)[x] = value; |
418 |
else |
419 |
((uint16_t *)line)[x] = value; |
420 |
} |
421 |
|
422 |
row += rowstride; |
423 |
line += ximage->bytes_per_line; |
424 |
} |
425 |
|
426 |
XPutImage (dpy, pixmap, gc, ximage, 0, 0, dst_x, dst_y, width, height); |
427 |
XDestroyImage (ximage); |
428 |
return true; |
429 |
} |
430 |
|
431 |
bool |
432 |
rxvt_term::render_image (bool transparent) |
433 |
{ |
434 |
if (!pixbuf) |
435 |
return false; |
436 |
|
437 |
if (transparent |
438 |
&& !(bg_flags & BG_HAS_RENDER)) |
439 |
return false; |
440 |
|
441 |
GdkPixbuf *result; |
442 |
|
443 |
int image_width = gdk_pixbuf_get_width (pixbuf); |
444 |
int image_height = gdk_pixbuf_get_height (pixbuf); |
445 |
|
446 |
int target_width = szHint.width; |
447 |
int target_height = szHint.height; |
448 |
int new_pmap_width = target_width; |
449 |
int new_pmap_height = target_height; |
450 |
|
451 |
int x = 0; |
452 |
int y = 0; |
453 |
int w = 0; |
454 |
int h = 0; |
455 |
|
456 |
get_image_geometry (image_width, image_height, w, h, x, y); |
457 |
|
458 |
if (!(bg_flags & BG_ROOT_ALIGN) |
459 |
&& (x >= target_width |
460 |
|| y >= target_height |
461 |
|| x + w <= 0 |
462 |
|| y + h <= 0)) |
463 |
return false; |
464 |
|
465 |
result = pixbuf; |
466 |
|
467 |
if (w != image_width |
468 |
|| h != image_height) |
469 |
{ |
470 |
result = gdk_pixbuf_scale_simple (pixbuf, |
471 |
w, h, |
472 |
GDK_INTERP_BILINEAR); |
473 |
} |
474 |
|
475 |
if (!result) |
476 |
return false; |
477 |
|
478 |
bool ret = false; |
479 |
|
480 |
XGCValues gcv; |
481 |
GC gc; |
482 |
Pixmap root_pmap; |
483 |
|
484 |
image_width = gdk_pixbuf_get_width (result); |
485 |
image_height = gdk_pixbuf_get_height (result); |
486 |
|
487 |
if (transparent) |
488 |
{ |
489 |
root_pmap = bg_pixmap; |
490 |
bg_pixmap = None; |
491 |
} |
492 |
else |
493 |
{ |
494 |
if (bg_flags & BG_TILE) |
495 |
{ |
496 |
new_pmap_width = min (image_width, target_width); |
497 |
new_pmap_height = min (image_height, target_height); |
498 |
} |
499 |
} |
500 |
|
501 |
if (bg_pixmap == None |
502 |
|| bg_pmap_width != new_pmap_width |
503 |
|| bg_pmap_height != new_pmap_height) |
504 |
{ |
505 |
if (bg_pixmap) |
506 |
XFreePixmap (dpy, bg_pixmap); |
507 |
bg_pixmap = XCreatePixmap (dpy, vt, new_pmap_width, new_pmap_height, depth); |
508 |
bg_pmap_width = new_pmap_width; |
509 |
bg_pmap_height = new_pmap_height; |
510 |
} |
511 |
|
512 |
gcv.foreground = pix_colors[Color_bg]; |
513 |
gc = XCreateGC (dpy, vt, GCForeground, &gcv); |
514 |
|
515 |
if (gc) |
516 |
{ |
517 |
if (bg_flags & BG_TILE) |
518 |
{ |
519 |
Pixmap tile = XCreatePixmap (dpy, vt, image_width, image_height, depth); |
520 |
pixbuf_to_pixmap (result, tile, gc, |
521 |
0, 0, |
522 |
0, 0, |
523 |
image_width, image_height); |
524 |
|
525 |
gcv.tile = tile; |
526 |
gcv.fill_style = FillTiled; |
527 |
gcv.ts_x_origin = x; |
528 |
gcv.ts_y_origin = y; |
529 |
XChangeGC (dpy, gc, GCFillStyle | GCTile | GCTileStipXOrigin | GCTileStipYOrigin, &gcv); |
530 |
|
531 |
XFillRectangle (dpy, bg_pixmap, gc, 0, 0, new_pmap_width, new_pmap_height); |
532 |
XFreePixmap (dpy, tile); |
533 |
} |
534 |
else |
535 |
{ |
536 |
int src_x, src_y, dst_x, dst_y; |
537 |
int dst_width, dst_height; |
538 |
|
539 |
src_x = make_clip_rectangle (x, image_width , new_pmap_width , dst_x, dst_width ); |
540 |
src_y = make_clip_rectangle (y, image_height, new_pmap_height, dst_y, dst_height); |
541 |
|
542 |
if (dst_x > 0 || dst_y > 0 |
543 |
|| dst_x + dst_width < new_pmap_width |
544 |
|| dst_y + dst_height < new_pmap_height) |
545 |
XFillRectangle (dpy, bg_pixmap, gc, 0, 0, new_pmap_width, new_pmap_height); |
546 |
|
547 |
if (dst_x < new_pmap_width && dst_y < new_pmap_height) |
548 |
pixbuf_to_pixmap (result, bg_pixmap, gc, |
549 |
src_x, src_y, |
550 |
dst_x, dst_y, |
551 |
dst_width, dst_height); |
552 |
} |
553 |
|
554 |
#if XRENDER |
555 |
if (transparent) |
556 |
{ |
557 |
XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual); |
558 |
|
559 |
Picture src = XRenderCreatePicture (dpy, root_pmap, format, 0, 0); |
560 |
|
561 |
Picture dst = XRenderCreatePicture (dpy, bg_pixmap, format, 0, 0); |
562 |
|
563 |
Picture mask = create_xrender_mask (dpy, vt, False, False); |
564 |
|
565 |
XRenderColor mask_c; |
566 |
|
567 |
mask_c.alpha = 0x8000; |
568 |
mask_c.red = |
569 |
mask_c.green = |
570 |
mask_c.blue = 0; |
571 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
572 |
|
573 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, target_width, target_height); |
574 |
|
575 |
XRenderFreePicture (dpy, src); |
576 |
XRenderFreePicture (dpy, dst); |
577 |
XRenderFreePicture (dpy, mask); |
578 |
} |
579 |
#endif |
580 |
|
581 |
XFreeGC (dpy, gc); |
582 |
|
583 |
ret = true; |
584 |
} |
585 |
|
586 |
if (result != pixbuf) |
587 |
g_object_unref (result); |
588 |
|
589 |
if (transparent) |
590 |
XFreePixmap (dpy, root_pmap); |
591 |
|
592 |
return ret; |
593 |
} |
594 |
# endif /* HAVE_PIXBUF */ |
595 |
|
596 |
bool |
597 |
rxvt_term::bg_set_file (const char *file) |
598 |
{ |
599 |
if (!file || !*file) |
600 |
return false; |
601 |
|
602 |
bool ret = false; |
603 |
const char *p = strchr (file, ';'); |
604 |
|
605 |
if (p) |
606 |
{ |
607 |
size_t len = p - file; |
608 |
char *f = rxvt_temp_buf<char> (len + 1); |
609 |
memcpy (f, file, len); |
610 |
f[len] = '\0'; |
611 |
file = f; |
612 |
} |
613 |
|
614 |
# ifdef HAVE_PIXBUF |
615 |
GdkPixbuf *image = gdk_pixbuf_new_from_file (file, NULL); |
616 |
if (image) |
617 |
{ |
618 |
if (pixbuf) |
619 |
g_object_unref (pixbuf); |
620 |
pixbuf = image; |
621 |
bg_flags |= BG_IS_FROM_FILE; |
622 |
ret = true; |
623 |
} |
624 |
# endif |
625 |
|
626 |
if (ret) |
627 |
{ |
628 |
if (p) |
629 |
bg_set_geometry (p + 1); |
630 |
else |
631 |
bg_set_default_geometry (); |
632 |
} |
633 |
|
634 |
return ret; |
635 |
} |
636 |
|
637 |
# endif /* BG_IMAGE_FROM_FILE */ |
638 |
|
639 |
# ifdef ENABLE_TRANSPARENCY |
640 |
bool |
641 |
rxvt_term::bg_set_transparent () |
642 |
{ |
643 |
if (!(bg_flags & BG_IS_TRANSPARENT)) |
644 |
{ |
645 |
bg_flags |= BG_IS_TRANSPARENT; |
646 |
return true; |
647 |
} |
648 |
|
649 |
return false; |
650 |
} |
651 |
|
652 |
bool |
653 |
rxvt_term::bg_set_blur (const char *geom) |
654 |
{ |
655 |
bool changed = false; |
656 |
unsigned int hr, vr; |
657 |
int junk; |
658 |
int geom_flags = XParseGeometry (geom, &junk, &junk, &hr, &vr); |
659 |
|
660 |
if (!(geom_flags & WidthValue)) |
661 |
hr = 1; |
662 |
if (!(geom_flags & HeightValue)) |
663 |
vr = hr; |
664 |
|
665 |
min_it (hr, 128); |
666 |
min_it (vr, 128); |
667 |
|
668 |
if (h_blurRadius != hr) |
669 |
{ |
670 |
changed = true; |
671 |
h_blurRadius = hr; |
672 |
} |
673 |
|
674 |
if (v_blurRadius != vr) |
675 |
{ |
676 |
changed = true; |
677 |
v_blurRadius = vr; |
678 |
} |
679 |
|
680 |
if (h_blurRadius == 0 || v_blurRadius == 0) |
681 |
bg_flags &= ~BG_NEEDS_BLUR; |
682 |
else |
683 |
bg_flags |= BG_NEEDS_BLUR; |
684 |
|
685 |
return changed; |
686 |
} |
687 |
|
688 |
void |
689 |
rxvt_term::set_tint_shade_flags () |
690 |
{ |
691 |
if (shade != 100 || (bg_flags & BG_TINT_SET)) |
692 |
bg_flags |= BG_NEEDS_TINT; |
693 |
else |
694 |
bg_flags &= ~BG_NEEDS_TINT; |
695 |
} |
696 |
|
697 |
bool |
698 |
rxvt_term::bg_set_tint (rxvt_color &new_tint) |
699 |
{ |
700 |
if (!(bg_flags & BG_TINT_SET) || tint != new_tint) |
701 |
{ |
702 |
tint = new_tint; |
703 |
bg_flags |= BG_TINT_SET; |
704 |
|
705 |
rgba c; |
706 |
tint.get (c); |
707 |
if ((c.r <= 0x00ff || c.r >= 0xff00) |
708 |
&& (c.g <= 0x00ff || c.g >= 0xff00) |
709 |
&& (c.b <= 0x00ff || c.b >= 0xff00)) |
710 |
bg_flags |= BG_TINT_BITAND; |
711 |
else |
712 |
bg_flags &= ~BG_TINT_BITAND; |
713 |
|
714 |
set_tint_shade_flags (); |
715 |
return true; |
716 |
} |
717 |
|
718 |
return false; |
719 |
} |
720 |
|
721 |
bool |
722 |
rxvt_term::bg_set_shade (const char *shade_str) |
723 |
{ |
724 |
int new_shade = atoi (shade_str); |
725 |
|
726 |
clamp_it (new_shade, -100, 200); |
727 |
if (new_shade < 0) |
728 |
new_shade = 200 - (100 + new_shade); |
729 |
|
730 |
if (new_shade != shade) |
731 |
{ |
732 |
shade = new_shade; |
733 |
set_tint_shade_flags (); |
734 |
return true; |
735 |
} |
736 |
|
737 |
return false; |
738 |
} |
739 |
|
740 |
#if XRENDER |
741 |
static void |
742 |
get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) |
743 |
{ |
744 |
double sigma = radius / 2.0; |
745 |
double scale = sqrt (2.0 * M_PI) * sigma; |
746 |
double sum = 0.0; |
747 |
|
748 |
for (int i = 0; i < width; i++) |
749 |
{ |
750 |
double x = i - width / 2; |
751 |
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
752 |
sum += kernel[i]; |
753 |
} |
754 |
|
755 |
params[0] = XDoubleToFixed (width); |
756 |
params[1] = XDoubleToFixed (1); |
757 |
|
758 |
for (int i = 0; i < width; i++) |
759 |
params[i+2] = XDoubleToFixed (kernel[i] / sum); |
760 |
} |
761 |
#endif |
762 |
|
763 |
bool |
764 |
rxvt_term::blur_pixmap (Pixmap pixmap, Visual *visual, int width, int height, int depth) |
765 |
{ |
766 |
bool ret = false; |
767 |
#if XRENDER |
768 |
if (!(bg_flags & BG_HAS_RENDER_CONV)) |
769 |
return false; |
770 |
|
771 |
int size = max (h_blurRadius, v_blurRadius) * 2 + 1; |
772 |
double *kernel = (double *)malloc (size * sizeof (double)); |
773 |
XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
774 |
|
775 |
XRenderPictureAttributes pa; |
776 |
XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual); |
777 |
|
778 |
pa.repeat = RepeatPad; |
779 |
Picture src = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa); |
780 |
Pixmap tmp = XCreatePixmap (dpy, pixmap, width, height, depth); |
781 |
Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa); |
782 |
XFreePixmap (dpy, tmp); |
783 |
|
784 |
if (kernel && params) |
785 |
{ |
786 |
size = h_blurRadius * 2 + 1; |
787 |
get_gaussian_kernel (h_blurRadius, size, kernel, params); |
788 |
|
789 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
790 |
XRenderComposite (dpy, |
791 |
PictOpSrc, |
792 |
src, |
793 |
None, |
794 |
dst, |
795 |
0, 0, |
796 |
0, 0, |
797 |
0, 0, |
798 |
width, height); |
799 |
|
800 |
::swap (src, dst); |
801 |
|
802 |
size = v_blurRadius * 2 + 1; |
803 |
get_gaussian_kernel (v_blurRadius, size, kernel, params); |
804 |
::swap (params[0], params[1]); |
805 |
|
806 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
807 |
XRenderComposite (dpy, |
808 |
PictOpSrc, |
809 |
src, |
810 |
None, |
811 |
dst, |
812 |
0, 0, |
813 |
0, 0, |
814 |
0, 0, |
815 |
width, height); |
816 |
|
817 |
ret = true; |
818 |
} |
819 |
|
820 |
free (kernel); |
821 |
free (params); |
822 |
XRenderFreePicture (dpy, src); |
823 |
XRenderFreePicture (dpy, dst); |
824 |
#endif |
825 |
return ret; |
826 |
} |
827 |
|
828 |
bool |
829 |
rxvt_term::tint_pixmap (Pixmap pixmap, Visual *visual, int width, int height) |
830 |
{ |
831 |
bool ret = false; |
832 |
|
833 |
if (shade == 100 && (bg_flags & BG_TINT_BITAND)) |
834 |
{ |
835 |
XGCValues gcv; |
836 |
GC gc; |
837 |
|
838 |
/* In this case we can tint image server-side getting significant |
839 |
* performance improvements, as we eliminate XImage transfer |
840 |
*/ |
841 |
gcv.foreground = Pixel (tint); |
842 |
gcv.function = GXand; |
843 |
gcv.fill_style = FillSolid; |
844 |
gc = XCreateGC (dpy, pixmap, GCFillStyle | GCForeground | GCFunction, &gcv); |
845 |
if (gc) |
846 |
{ |
847 |
XFillRectangle (dpy, pixmap, gc, 0, 0, width, height); |
848 |
ret = true; |
849 |
XFreeGC (dpy, gc); |
850 |
} |
851 |
} |
852 |
# if XRENDER |
853 |
else if (bg_flags & BG_HAS_RENDER) |
854 |
{ |
855 |
rgba c (rgba::MAX_CC, rgba::MAX_CC, rgba::MAX_CC); |
856 |
|
857 |
if (bg_flags & BG_TINT_SET) |
858 |
tint.get (c); |
859 |
|
860 |
if (shade <= 100) |
861 |
{ |
862 |
c.r = c.r * shade / 100; |
863 |
c.g = c.g * shade / 100; |
864 |
c.b = c.b * shade / 100; |
865 |
} |
866 |
else |
867 |
{ |
868 |
c.r = c.r * (200 - shade) / 100; |
869 |
c.g = c.g * (200 - shade) / 100; |
870 |
c.b = c.b * (200 - shade) / 100; |
871 |
} |
872 |
|
873 |
XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual); |
874 |
|
875 |
Picture back_pic = XRenderCreatePicture (dpy, pixmap, format, 0, 0); |
876 |
|
877 |
Picture overlay_pic = create_xrender_mask (dpy, pixmap, True, False); |
878 |
|
879 |
Picture mask_pic = create_xrender_mask (dpy, pixmap, True, True); |
880 |
|
881 |
XRenderColor mask_c; |
882 |
|
883 |
mask_c.alpha = 0xffff; |
884 |
mask_c.red = |
885 |
mask_c.green = |
886 |
mask_c.blue = 0; |
887 |
XRenderFillRectangle (dpy, PictOpSrc, overlay_pic, &mask_c, 0, 0, 1, 1); |
888 |
|
889 |
mask_c.alpha = 0; |
890 |
mask_c.red = 0xffff - c.r; |
891 |
mask_c.green = 0xffff - c.g; |
892 |
mask_c.blue = 0xffff - c.b; |
893 |
XRenderFillRectangle (dpy, PictOpSrc, mask_pic, &mask_c, 0, 0, 1, 1); |
894 |
|
895 |
XRenderComposite (dpy, PictOpOver, overlay_pic, mask_pic, back_pic, 0, 0, 0, 0, 0, 0, width, height); |
896 |
|
897 |
if (shade > 100) |
898 |
{ |
899 |
mask_c.alpha = 0; |
900 |
mask_c.red = |
901 |
mask_c.green = |
902 |
mask_c.blue = 0xffff * (shade - 100) / 100; |
903 |
XRenderFillRectangle (dpy, PictOpSrc, overlay_pic, &mask_c, 0, 0, 1, 1); |
904 |
|
905 |
XRenderComposite (dpy, PictOpOver, overlay_pic, None, back_pic, 0, 0, 0, 0, 0, 0, width, height); |
906 |
} |
907 |
|
908 |
ret = true; |
909 |
|
910 |
XRenderFreePicture (dpy, mask_pic); |
911 |
XRenderFreePicture (dpy, overlay_pic); |
912 |
XRenderFreePicture (dpy, back_pic); |
913 |
} |
914 |
# endif |
915 |
|
916 |
return ret; |
917 |
} |
918 |
|
919 |
/* |
920 |
* Builds a pixmap of the same size as the terminal window that contains |
921 |
* the tiled portion of the root pixmap that is supposed to be covered by |
922 |
* our window. |
923 |
*/ |
924 |
bool |
925 |
rxvt_term::make_transparency_pixmap () |
926 |
{ |
927 |
bool ret = false; |
928 |
|
929 |
/* root dimensions may change from call to call - but Display structure should |
930 |
* be always up-to-date, so let's use it : |
931 |
*/ |
932 |
int screen = display->screen; |
933 |
int root_depth = DefaultDepth (dpy, screen); |
934 |
int root_width = DisplayWidth (dpy, screen); |
935 |
int root_height = DisplayHeight (dpy, screen); |
936 |
unsigned int root_pmap_width, root_pmap_height; |
937 |
int window_width = szHint.width; |
938 |
int window_height = szHint.height; |
939 |
int sx, sy; |
940 |
XGCValues gcv; |
941 |
GC gc; |
942 |
|
943 |
sx = target_x; |
944 |
sy = target_y; |
945 |
|
946 |
/* check if we are outside of the visible part of the virtual screen : */ |
947 |
if (sx + window_width <= 0 || sy + window_height <= 0 |
948 |
|| sx >= root_width || sy >= root_height) |
949 |
return 0; |
950 |
|
951 |
// validate root pixmap and get its size |
952 |
if (root_pixmap != None) |
953 |
{ |
954 |
Window wdummy; |
955 |
int idummy; |
956 |
unsigned int udummy; |
957 |
|
958 |
allowedxerror = -1; |
959 |
|
960 |
if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pmap_width, &root_pmap_height, &udummy, &udummy)) |
961 |
root_pixmap = None; |
962 |
|
963 |
allowedxerror = 0; |
964 |
} |
965 |
|
966 |
Pixmap recoded_root_pmap = root_pixmap; |
967 |
|
968 |
if (root_pixmap != None && root_depth != depth) |
969 |
{ |
970 |
#if XRENDER |
971 |
if (bg_flags & BG_HAS_RENDER) |
972 |
{ |
973 |
recoded_root_pmap = XCreatePixmap (dpy, vt, root_pmap_width, root_pmap_height, depth); |
974 |
|
975 |
XRenderPictFormat *src_format = XRenderFindVisualFormat (dpy, DefaultVisual (dpy, screen)); |
976 |
Picture src = XRenderCreatePicture (dpy, root_pixmap, src_format, 0, 0); |
977 |
|
978 |
XRenderPictFormat *dst_format = XRenderFindVisualFormat (dpy, visual); |
979 |
Picture dst = XRenderCreatePicture (dpy, recoded_root_pmap, dst_format, 0, 0); |
980 |
|
981 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, root_pmap_width, root_pmap_height); |
982 |
|
983 |
XRenderFreePicture (dpy, src); |
984 |
XRenderFreePicture (dpy, dst); |
985 |
} |
986 |
else |
987 |
#endif |
988 |
recoded_root_pmap = None; |
989 |
} |
990 |
|
991 |
if (recoded_root_pmap == None) |
992 |
return 0; |
993 |
|
994 |
if (bg_pixmap == None |
995 |
|| bg_pmap_width != window_width |
996 |
|| bg_pmap_height != window_height) |
997 |
{ |
998 |
if (bg_pixmap) |
999 |
XFreePixmap (dpy, bg_pixmap); |
1000 |
bg_pixmap = XCreatePixmap (dpy, vt, window_width, window_height, depth); |
1001 |
bg_pmap_width = window_width; |
1002 |
bg_pmap_height = window_height; |
1003 |
} |
1004 |
|
1005 |
/* straightforward pixmap copy */ |
1006 |
while (sx < 0) sx += root_pmap_width; |
1007 |
while (sy < 0) sy += root_pmap_height; |
1008 |
|
1009 |
gcv.tile = recoded_root_pmap; |
1010 |
gcv.fill_style = FillTiled; |
1011 |
gcv.ts_x_origin = -sx; |
1012 |
gcv.ts_y_origin = -sy; |
1013 |
gc = XCreateGC (dpy, vt, GCFillStyle | GCTile | GCTileStipXOrigin | GCTileStipYOrigin, &gcv); |
1014 |
|
1015 |
if (gc) |
1016 |
{ |
1017 |
XFillRectangle (dpy, bg_pixmap, gc, 0, 0, window_width, window_height); |
1018 |
ret = true; |
1019 |
unsigned long tr_flags = bg_flags & BG_EFFECTS_FLAGS; |
1020 |
|
1021 |
if (!(bg_flags & BG_CLIENT_RENDER)) |
1022 |
{ |
1023 |
if (bg_flags & BG_NEEDS_BLUR) |
1024 |
{ |
1025 |
if (blur_pixmap (bg_pixmap, visual, window_width, window_height, depth)) |
1026 |
tr_flags &= ~BG_NEEDS_BLUR; |
1027 |
} |
1028 |
if (bg_flags & BG_NEEDS_TINT) |
1029 |
{ |
1030 |
if (tint_pixmap (bg_pixmap, visual, window_width, window_height)) |
1031 |
tr_flags &= ~BG_NEEDS_TINT; |
1032 |
} |
1033 |
if (tr_flags & BG_NEEDS_TINT) |
1034 |
{ |
1035 |
XImage *ximage = XGetImage (dpy, bg_pixmap, 0, 0, bg_pmap_width, bg_pmap_height, AllPlanes, ZPixmap); |
1036 |
if (ximage) |
1037 |
{ |
1038 |
/* our own client-side tinting */ |
1039 |
tint_ximage (DefaultVisual (dpy, display->screen), ximage); |
1040 |
|
1041 |
XPutImage (dpy, bg_pixmap, gc, ximage, 0, 0, 0, 0, ximage->width, ximage->height); |
1042 |
XDestroyImage (ximage); |
1043 |
} |
1044 |
} |
1045 |
} /* server side rendering completed */ |
1046 |
|
1047 |
XFreeGC (dpy, gc); |
1048 |
} |
1049 |
|
1050 |
if (recoded_root_pmap != root_pixmap) |
1051 |
XFreePixmap (dpy, recoded_root_pmap); |
1052 |
|
1053 |
return ret; |
1054 |
} |
1055 |
|
1056 |
void |
1057 |
rxvt_term::bg_set_root_pixmap () |
1058 |
{ |
1059 |
Pixmap new_root_pixmap = get_pixmap_property (xa[XA_XROOTPMAP_ID]); |
1060 |
if (new_root_pixmap == None) |
1061 |
new_root_pixmap = get_pixmap_property (xa[XA_ESETROOT_PMAP_ID]); |
1062 |
|
1063 |
root_pixmap = new_root_pixmap; |
1064 |
} |
1065 |
# endif /* ENABLE_TRANSPARENCY */ |
1066 |
|
1067 |
bool |
1068 |
rxvt_term::bg_render () |
1069 |
{ |
1070 |
bool transparent = false; |
1071 |
|
1072 |
bg_invalidate (); |
1073 |
# ifdef ENABLE_TRANSPARENCY |
1074 |
if (bg_flags & BG_IS_TRANSPARENT) |
1075 |
{ |
1076 |
/* we need to re-generate transparency pixmap in that case ! */ |
1077 |
transparent = make_transparency_pixmap (); |
1078 |
if (transparent) |
1079 |
bg_flags |= BG_IS_VALID; |
1080 |
} |
1081 |
# endif |
1082 |
|
1083 |
# ifdef BG_IMAGE_FROM_FILE |
1084 |
if (bg_flags & BG_IS_FROM_FILE) |
1085 |
{ |
1086 |
if (render_image (transparent)) |
1087 |
bg_flags |= BG_IS_VALID; |
1088 |
} |
1089 |
# endif |
1090 |
|
1091 |
if (!(bg_flags & BG_IS_VALID)) |
1092 |
{ |
1093 |
if (bg_pixmap != None) |
1094 |
{ |
1095 |
XFreePixmap (dpy, bg_pixmap); |
1096 |
bg_pixmap = None; |
1097 |
} |
1098 |
} |
1099 |
|
1100 |
scr_recolour (false); |
1101 |
bg_flags |= BG_NEEDS_REFRESH; |
1102 |
|
1103 |
bg_valid_since = ev::now (); |
1104 |
|
1105 |
return true; |
1106 |
} |
1107 |
|
1108 |
void |
1109 |
rxvt_term::bg_init () |
1110 |
{ |
1111 |
#ifdef ENABLE_TRANSPARENCY |
1112 |
shade = 100; |
1113 |
#endif |
1114 |
|
1115 |
bg_flags &= ~(BG_HAS_RENDER | BG_HAS_RENDER_CONV); |
1116 |
#if XRENDER |
1117 |
int major, minor; |
1118 |
if (XRenderQueryVersion (dpy, &major, &minor)) |
1119 |
bg_flags |= BG_HAS_RENDER; |
1120 |
XFilters *filters = XRenderQueryFilters (dpy, vt); |
1121 |
if (filters) |
1122 |
{ |
1123 |
for (int i = 0; i < filters->nfilter; i++) |
1124 |
if (!strcmp (filters->filter[i], FilterConvolution)) |
1125 |
bg_flags |= BG_HAS_RENDER_CONV; |
1126 |
|
1127 |
XFree (filters); |
1128 |
} |
1129 |
#endif |
1130 |
} |
1131 |
|
1132 |
#endif /* HAVE_BG_PIXMAP */ |
1133 |
|
1134 |
#ifdef ENABLE_TRANSPARENCY |
1135 |
/* based on code from aterm-0.4.2 */ |
1136 |
|
1137 |
static inline void |
1138 |
fill_lut (uint32_t *lookup, uint32_t mask, int sh, unsigned short low, unsigned short high) |
1139 |
{ |
1140 |
for (int i = 0; i <= mask >> sh; i++) |
1141 |
{ |
1142 |
uint32_t tmp; |
1143 |
tmp = i * high; |
1144 |
tmp += (mask >> sh) * low; |
1145 |
lookup[i] = (tmp / 0xffff) << sh; |
1146 |
} |
1147 |
} |
1148 |
|
1149 |
void |
1150 |
rxvt_term::tint_ximage (Visual *visual, XImage *ximage) |
1151 |
{ |
1152 |
int sh_r, sh_g, sh_b; |
1153 |
uint32_t mask_r, mask_g, mask_b; |
1154 |
uint32_t *lookup, *lookup_r, *lookup_g, *lookup_b; |
1155 |
unsigned short low; |
1156 |
int host_byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
1157 |
|
1158 |
if (visual->c_class != TrueColor || ximage->format != ZPixmap) return; |
1159 |
|
1160 |
/* for convenience */ |
1161 |
mask_r = visual->red_mask; |
1162 |
mask_g = visual->green_mask; |
1163 |
mask_b = visual->blue_mask; |
1164 |
|
1165 |
/* boring lookup table pre-initialization */ |
1166 |
switch (ximage->depth) |
1167 |
{ |
1168 |
case 15: |
1169 |
if ((mask_r != 0x7c00) || |
1170 |
(mask_g != 0x03e0) || |
1171 |
(mask_b != 0x001f)) |
1172 |
return; |
1173 |
lookup = (uint32_t *) malloc (sizeof (uint32_t)*(32+32+32)); |
1174 |
lookup_r = lookup; |
1175 |
lookup_g = lookup+32; |
1176 |
lookup_b = lookup+32+32; |
1177 |
sh_r = 10; |
1178 |
sh_g = 5; |
1179 |
sh_b = 0; |
1180 |
break; |
1181 |
case 16: |
1182 |
if ((mask_r != 0xf800) || |
1183 |
(mask_g != 0x07e0) || |
1184 |
(mask_b != 0x001f)) |
1185 |
return; |
1186 |
lookup = (uint32_t *) malloc (sizeof (uint32_t)*(32+64+32)); |
1187 |
lookup_r = lookup; |
1188 |
lookup_g = lookup+32; |
1189 |
lookup_b = lookup+32+64; |
1190 |
sh_r = 11; |
1191 |
sh_g = 5; |
1192 |
sh_b = 0; |
1193 |
break; |
1194 |
case 24: |
1195 |
if ((mask_r != 0xff0000) || |
1196 |
(mask_g != 0x00ff00) || |
1197 |
(mask_b != 0x0000ff)) |
1198 |
return; |
1199 |
lookup = (uint32_t *) malloc (sizeof (uint32_t)*(256+256+256)); |
1200 |
lookup_r = lookup; |
1201 |
lookup_g = lookup+256; |
1202 |
lookup_b = lookup+256+256; |
1203 |
sh_r = 16; |
1204 |
sh_g = 8; |
1205 |
sh_b = 0; |
1206 |
break; |
1207 |
case 32: |
1208 |
if ((mask_r != 0xff0000) || |
1209 |
(mask_g != 0x00ff00) || |
1210 |
(mask_b != 0x0000ff)) |
1211 |
return; |
1212 |
lookup = (uint32_t *) malloc (sizeof (uint32_t)*(256+256+256)); |
1213 |
lookup_r = lookup; |
1214 |
lookup_g = lookup+256; |
1215 |
lookup_b = lookup+256+256; |
1216 |
sh_r = 16; |
1217 |
sh_g = 8; |
1218 |
sh_b = 0; |
1219 |
break; |
1220 |
default: |
1221 |
return; /* we do not support this color depth */ |
1222 |
} |
1223 |
|
1224 |
rgba c (rgba::MAX_CC, rgba::MAX_CC, rgba::MAX_CC); |
1225 |
|
1226 |
if (bg_flags & BG_TINT_SET) |
1227 |
tint.get (c); |
1228 |
|
1229 |
/* prepare limits for color transformation (each channel is handled separately) */ |
1230 |
if (shade > 100) |
1231 |
{ |
1232 |
c.r = c.r * (200 - shade) / 100; |
1233 |
c.g = c.g * (200 - shade) / 100; |
1234 |
c.b = c.b * (200 - shade) / 100; |
1235 |
|
1236 |
low = 0xffff * (shade - 100) / 100; |
1237 |
} |
1238 |
else |
1239 |
{ |
1240 |
c.r = c.r * shade / 100; |
1241 |
c.g = c.g * shade / 100; |
1242 |
c.b = c.b * shade / 100; |
1243 |
|
1244 |
low = 0; |
1245 |
} |
1246 |
|
1247 |
/* fill our lookup tables */ |
1248 |
fill_lut (lookup_r, mask_r, sh_r, low, c.r); |
1249 |
fill_lut (lookup_g, mask_g, sh_g, low, c.g); |
1250 |
fill_lut (lookup_b, mask_b, sh_b, low, c.b); |
1251 |
|
1252 |
/* apply table to input image (replacing colors by newly calculated ones) */ |
1253 |
if (ximage->bits_per_pixel == 32 |
1254 |
&& (ximage->depth == 24 || ximage->depth == 32) |
1255 |
&& ximage->byte_order == host_byte_order) |
1256 |
{ |
1257 |
uint32_t *p1, *pf, *p, *pl; |
1258 |
p1 = (uint32_t *) ximage->data; |
1259 |
pf = (uint32_t *) (ximage->data + ximage->height * ximage->bytes_per_line); |
1260 |
|
1261 |
while (p1 < pf) |
1262 |
{ |
1263 |
p = p1; |
1264 |
pl = p1 + ximage->width; |
1265 |
for (; p < pl; p++) |
1266 |
{ |
1267 |
*p = lookup_r[(*p & 0xff0000) >> 16] | |
1268 |
lookup_g[(*p & 0x00ff00) >> 8] | |
1269 |
lookup_b[(*p & 0x0000ff)] | |
1270 |
(*p & 0xff000000); |
1271 |
} |
1272 |
p1 = (uint32_t *) ((char *) p1 + ximage->bytes_per_line); |
1273 |
} |
1274 |
} |
1275 |
else |
1276 |
{ |
1277 |
for (int y = 0; y < ximage->height; y++) |
1278 |
for (int x = 0; x < ximage->width; x++) |
1279 |
{ |
1280 |
unsigned long pixel = XGetPixel (ximage, x, y); |
1281 |
pixel = lookup_r[(pixel & mask_r) >> sh_r] | |
1282 |
lookup_g[(pixel & mask_g) >> sh_g] | |
1283 |
lookup_b[(pixel & mask_b) >> sh_b]; |
1284 |
XPutPixel (ximage, x, y, pixel); |
1285 |
} |
1286 |
} |
1287 |
|
1288 |
free (lookup); |
1289 |
} |
1290 |
#endif /* ENABLE_TRANSPARENCY */ |