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Comparing rxvt-unicode/src/background.C (file contents):
Revision 1.211 by sf-exg, Sun May 13 15:28:44 2012 UTC vs.
Revision 1.237 by root, Sun Jun 10 15:01:14 2012 UTC

… …
20 * You should have received a copy of the GNU General Public License 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 21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *---------------------------------------------------------------------*/ 23 *---------------------------------------------------------------------*/
24 24
25#include <math.h>
26#include "../config.h" /* NECESSARY */ 25#include "../config.h" /* NECESSARY */
27#include "rxvt.h" /* NECESSARY */ 26#include "rxvt.h" /* NECESSARY */
28 27
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 28#ifdef HAVE_BG_PIXMAP
42# if XRENDER
43static Picture
44create_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 29
60void 30void
61rxvt_term::bg_destroy () 31rxvt_term::bg_destroy ()
62{ 32{
63#ifdef HAVE_PIXBUF 33# if ENABLE_TRANSPARENCY
64 if (pixbuf) 34 delete root_img;
65 g_object_unref (pixbuf); 35 root_img = 0;
66#endif 36# endif
67 37
68 if (bg_pixmap) 38# if BG_IMAGE_FROM_FILE
69 XFreePixmap (dpy, bg_pixmap); 39 fimage.destroy ();
40# endif
41
42 delete bg_img;
43 bg_img = 0;
70} 44}
71 45
72bool 46bool
73rxvt_term::bg_set_position (int x, int y) 47rxvt_term::bg_set_position (int x, int y)
74{ 48{
… …
84} 58}
85 59
86bool 60bool
87rxvt_term::bg_window_size_sensitive () 61rxvt_term::bg_window_size_sensitive ()
88{ 62{
89# ifdef ENABLE_TRANSPARENCY 63# if ENABLE_TRANSPARENCY
90 if (bg_flags & BG_IS_TRANSPARENT) 64 if (bg_flags & BG_IS_TRANSPARENT)
91 return true; 65 return true;
92# endif 66# endif
93 67
94# ifdef BG_IMAGE_FROM_FILE 68# if BG_IMAGE_FROM_FILE
95 if (bg_flags & BG_IS_FROM_FILE) 69 if (fimage.img)
96 { 70 {
97 if (bg_flags & BG_IS_SIZE_SENSITIVE) 71 if ((fimage.flags & IM_IS_SIZE_SENSITIVE)
72 || fimage.img->w > szHint.width
73 || fimage.img->h > szHint.height)
98 return true; 74 return true;
99 } 75 }
100# endif 76# endif
101 77
102 return false; 78 return false;
103} 79}
104 80
105bool 81bool
106rxvt_term::bg_window_position_sensitive () 82rxvt_term::bg_window_position_sensitive ()
107{ 83{
108# ifdef ENABLE_TRANSPARENCY 84# if ENABLE_TRANSPARENCY
109 if (bg_flags & BG_IS_TRANSPARENT) 85 if (bg_flags & BG_IS_TRANSPARENT)
110 return true; 86 return true;
111# endif 87# endif
112 88
113# ifdef BG_IMAGE_FROM_FILE 89# if BG_IMAGE_FROM_FILE
114 if (bg_flags & BG_IS_FROM_FILE) 90 if (fimage.img)
115 { 91 {
116 if (bg_flags & BG_ROOT_ALIGN) 92 if (fimage.flags & IM_ROOT_ALIGN)
117 return true; 93 return true;
118 } 94 }
119# endif 95# endif
120 96
121 return false; 97 return false;
122} 98}
123 99
124# ifdef BG_IMAGE_FROM_FILE 100# if BG_IMAGE_FROM_FILE
125static inline int 101static inline int
126make_align_position (int align, int window_size, int image_size) 102make_align_position (int align, int window_size, int image_size)
127{ 103{
128 if (align >= 0 && align <= 100) 104 if (align >= 0 && align <= 100)
129 return lerp (0, window_size - image_size, align); 105 return lerp (0, window_size - image_size, align);
… …
148 124
149 min_it (dst_size, target_size - dst_pos); 125 min_it (dst_size, target_size - dst_pos);
150 return src_pos; 126 return src_pos;
151} 127}
152 128
129static void
130parse_style (const char *style, int &x, int &y, unsigned int &w, unsigned int &h, uint8_t &flags)
131{
132 if (!strcasecmp (style, "tiled"))
133 {
134 flags = IM_TILE;
135 w = h = noScale;
136 x = y = 0;
137 }
138 else if (!strcasecmp (style, "aspect-stretched"))
139 {
140 flags = IM_KEEP_ASPECT;
141 w = h = windowScale;
142 x = y = centerAlign;
143 }
144 else if (!strcasecmp (style, "stretched"))
145 {
146 flags = 0;
147 w = h = windowScale;
148 x = y = centerAlign;
149 }
150 else if (!strcasecmp (style, "centered"))
151 {
152 flags = 0;
153 w = h = noScale;
154 x = y = centerAlign;
155 }
156 else if (!strcasecmp (style, "root-tiled"))
157 {
158 flags = IM_TILE|IM_ROOT_ALIGN;
159 w = h = noScale;
160 x = y = 0;
161 }
162}
163
153bool 164bool
154rxvt_term::bg_set_geometry (const char *geom, bool update) 165rxvt_image::set_geometry (const char *geom, bool update)
155{ 166{
156 bool changed = false; 167 bool changed = false;
157 int geom_flags = 0; 168 int geom_flags = 0;
158 int x = h_align; 169 int x = h_align;
159 int y = v_align; 170 int y = v_align;
160 unsigned int w = h_scale; 171 unsigned int w = h_scale;
161 unsigned int h = v_scale; 172 unsigned int h = v_scale;
162 unsigned long new_flags = 0; 173 uint8_t new_flags = 0;
163 174
164 if (geom == NULL) 175 if (geom == NULL)
165 return false; 176 return false;
166 177
167 if (geom[0]) 178 if (geom[0])
168 { 179 {
169 char **arr = rxvt_strsplit (':', geom); 180 char **arr = rxvt_strsplit (':', geom);
170 181
171 for (int i = 0; arr[i]; i++) 182 for (int i = 0; arr[i]; i++)
172 { 183 {
173 if (!strcasecmp (arr[i], "style=tiled")) 184 if (!strncasecmp (arr[i], "style=", 6))
174 { 185 {
175 new_flags = BG_TILE; 186 parse_style (arr[i] + 6, x, y, w, h, new_flags);
176 w = h = noScale;
177 x = y = 0;
178 geom_flags = WidthValue|HeightValue|XValue|YValue; 187 geom_flags = WidthValue|HeightValue|XValue|YValue;
179 } 188 }
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")) 189 else if (!strcasecmp (arr[i], "op=tile"))
207 new_flags |= BG_TILE; 190 new_flags |= IM_TILE;
208 else if (!strcasecmp (arr[i], "op=keep-aspect")) 191 else if (!strcasecmp (arr[i], "op=keep-aspect"))
209 new_flags |= BG_KEEP_ASPECT; 192 new_flags |= IM_KEEP_ASPECT;
210 else if (!strcasecmp (arr[i], "op=root-align")) 193 else if (!strcasecmp (arr[i], "op=root-align"))
211 new_flags |= BG_ROOT_ALIGN; 194 new_flags |= IM_ROOT_ALIGN;
212 195
213 // deprecated 196 // deprecated
214 else if (!strcasecmp (arr[i], "tile")) 197 else if (!strcasecmp (arr[i], "tile"))
215 { 198 {
216 new_flags |= BG_TILE; 199 new_flags |= IM_TILE;
217 w = h = noScale; 200 w = h = noScale;
218 geom_flags |= WidthValue|HeightValue; 201 geom_flags |= WidthValue|HeightValue;
219 } 202 }
220 else if (!strcasecmp (arr[i], "propscale")) 203 else if (!strcasecmp (arr[i], "propscale"))
221 { 204 {
222 new_flags |= BG_KEEP_ASPECT; 205 new_flags |= IM_KEEP_ASPECT;
223 w = h = windowScale; 206 w = h = windowScale;
224 geom_flags |= WidthValue|HeightValue; 207 geom_flags |= WidthValue|HeightValue;
225 } 208 }
226 else if (!strcasecmp (arr[i], "hscale")) 209 else if (!strcasecmp (arr[i], "hscale"))
227 { 210 {
228 new_flags |= BG_TILE; 211 new_flags |= IM_TILE;
229 w = windowScale; 212 w = windowScale;
230 h = noScale; 213 h = noScale;
231 geom_flags |= WidthValue|HeightValue; 214 geom_flags |= WidthValue|HeightValue;
232 } 215 }
233 else if (!strcasecmp (arr[i], "vscale")) 216 else if (!strcasecmp (arr[i], "vscale"))
234 { 217 {
235 new_flags |= BG_TILE; 218 new_flags |= IM_TILE;
236 h = windowScale; 219 h = windowScale;
237 w = noScale; 220 w = noScale;
238 geom_flags |= WidthValue|HeightValue; 221 geom_flags |= WidthValue|HeightValue;
239 } 222 }
240 else if (!strcasecmp (arr[i], "scale")) 223 else if (!strcasecmp (arr[i], "scale"))
… …
248 x = y = centerAlign; 231 x = y = centerAlign;
249 geom_flags |= WidthValue|HeightValue|XValue|YValue; 232 geom_flags |= WidthValue|HeightValue|XValue|YValue;
250 } 233 }
251 else if (!strcasecmp (arr[i], "root")) 234 else if (!strcasecmp (arr[i], "root"))
252 { 235 {
253 new_flags |= BG_TILE|BG_ROOT_ALIGN; 236 new_flags |= IM_TILE|IM_ROOT_ALIGN;
254 w = h = noScale; 237 w = h = noScale;
255 geom_flags |= WidthValue|HeightValue; 238 geom_flags |= WidthValue|HeightValue;
256 } 239 }
257 240
258 else 241 else
… …
260 } /* done parsing ops */ 243 } /* done parsing ops */
261 244
262 rxvt_free_strsplit (arr); 245 rxvt_free_strsplit (arr);
263 } 246 }
264 247
265 new_flags |= bg_flags & ~BG_GEOMETRY_FLAGS; 248 new_flags |= flags & ~IM_GEOMETRY_FLAGS;
266 249
267 if (!update) 250 if (!update)
268 { 251 {
269 if (!(geom_flags & XValue)) 252 if (!(geom_flags & XValue))
270 x = y = defaultAlign; 253 x = y = defaultAlign;
… …
277 h = w; 260 h = w;
278 else if (!(geom_flags & WidthValue)) 261 else if (!(geom_flags & WidthValue))
279 w = h; 262 w = h;
280 } 263 }
281 264
282 min_it (w, 1000);
283 min_it (h, 1000);
284 clamp_it (x, -100, 200); 265 clamp_it (x, -100, 200);
285 clamp_it (y, -100, 200); 266 clamp_it (y, -100, 200);
286 267
287 if (bg_flags != new_flags 268 if (flags != new_flags
288 || h_scale != w 269 || h_scale != w
289 || v_scale != h 270 || v_scale != h
290 || h_align != x 271 || h_align != x
291 || v_align != y) 272 || v_align != y)
292 { 273 {
293 bg_flags = new_flags; 274 flags = new_flags;
294 h_scale = w; 275 h_scale = w;
295 v_scale = h; 276 v_scale = h;
296 h_align = x; 277 h_align = x;
297 v_align = y; 278 v_align = y;
298 changed = true; 279 changed = true;
299 } 280 }
300 281
282 if (is_size_sensitive ())
283 flags |= IM_IS_SIZE_SENSITIVE;
284 else
285 flags &= ~IM_IS_SIZE_SENSITIVE;
286
301 return changed; 287 return changed;
302} 288}
303 289
304void 290void
305rxvt_term::get_image_geometry (int image_width, int image_height, int &w, int &h, int &x, int &y) 291rxvt_term::get_image_geometry (rxvt_image &image, int &w, int &h, int &x, int &y)
306{ 292{
293 int image_width = image.img->w;
294 int image_height = image.img->h;
307 int target_width = szHint.width; 295 int target_width = szHint.width;
308 int target_height = szHint.height; 296 int target_height = szHint.height;
297 int h_scale = min (image.h_scale, 32767 * 100 / target_width);
298 int v_scale = min (image.v_scale, 32767 * 100 / target_height);
309 299
310 w = h_scale * target_width / 100; 300 w = h_scale * target_width / 100;
311 h = v_scale * target_height / 100; 301 h = v_scale * target_height / 100;
312 302
313 if (bg_flags & BG_KEEP_ASPECT) 303 if (image.flags & IM_KEEP_ASPECT)
314 { 304 {
315 float scale = (float)w / image_width; 305 float scale = (float)w / image_width;
316 min_it (scale, (float)h / image_height); 306 min_it (scale, (float)h / image_height);
317 w = image_width * scale + 0.5; 307 w = image_width * scale + 0.5;
318 h = image_height * scale + 0.5; 308 h = image_height * scale + 0.5;
319 } 309 }
320 310
321 if (!w) w = image_width; 311 if (!w) w = image_width;
322 if (!h) h = image_height; 312 if (!h) h = image_height;
323 313
324 if (bg_flags & BG_ROOT_ALIGN) 314 if (image.flags & IM_ROOT_ALIGN)
325 { 315 {
326 x = -target_x; 316 x = -target_x;
327 y = -target_y; 317 y = -target_y;
328 } 318 }
329 else 319 else
330 { 320 {
331 x = make_align_position (h_align, target_width, w); 321 x = make_align_position (image.h_align, target_width, w);
332 y = make_align_position (v_align, target_height, h); 322 y = make_align_position (image.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
345bool
346rxvt_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 { 323 }
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} 324}
457 325
458bool 326bool
459rxvt_term::render_image (bool transparent) 327rxvt_term::render_image (rxvt_image &image)
460{ 328{
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; 329 int target_width = szHint.width;
474 int target_height = szHint.height; 330 int target_height = szHint.height;
475 int new_pmap_width = target_width;
476 int new_pmap_height = target_height;
477 331
478 int x = 0; 332 int x = 0;
479 int y = 0; 333 int y = 0;
480 int w = 0; 334 int w = 0;
481 int h = 0; 335 int h = 0;
482 336
483 get_image_geometry (image_width, image_height, w, h, x, y); 337 get_image_geometry (image, w, h, x, y);
484 338
485 if (!(bg_flags & BG_ROOT_ALIGN) 339 if (!(image.flags & IM_ROOT_ALIGN)
486 && (x >= target_width 340 && (x >= target_width
487 || y >= target_height 341 || y >= target_height
488 || x + w <= 0 342 || x + w <= 0
489 || y + h <= 0)) 343 || y + h <= 0))
490 return false; 344 return false;
491 345
492 result = pixbuf; 346 rxvt_img *img = image.img->scale (w, h);
493 347
494 if (w != image_width 348 if (image.flags & IM_TILE)
495 || h != image_height) 349 img->repeat_mode (RepeatNormal);
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 350 else
520 { 351 img->repeat_mode (RepeatNone);
352 img->sub_rect (-x, -y, target_width, target_height)->replace (img);
353
521 if (bg_flags & BG_TILE) 354 if (bg_flags & BG_IS_VALID)
522 {
523 new_pmap_width = min (image_width, target_width);
524 new_pmap_height = min (image_height, target_height);
525 }
526 } 355 {
527 356 double factor = image.alpha * 1. / 0xffff;
528 if (bg_pixmap == None 357 bg_img->blend (img, factor)->replace (img);
529 || bg_pmap_width != new_pmap_width
530 || bg_pmap_height != new_pmap_height)
531 { 358 }
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 }
538 359
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); 360 XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
361 img->convert_format (format, pix_colors [Color_bg])->replace (img);
585 362
586 Picture src = XRenderCreatePicture (dpy, root_pmap, format, 0, 0); 363 delete bg_img;
364 bg_img = img;
587 365
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; 366 return true;
620} 367}
621# endif /* HAVE_PIXBUF */
622 368
369rxvt_image::rxvt_image ()
370{
371 alpha = 0xffff;
372 flags = 0;
373 h_scale =
374 v_scale = defaultScale;
375 h_align =
376 v_align = defaultAlign;
377
378 img = 0;
379}
380
623bool 381bool
624rxvt_term::bg_set_file (const char *file) 382rxvt_image::set_file_geometry (rxvt_screen *s, const char *file)
625{ 383{
626 if (!file || !*file) 384 if (!file || !*file)
627 return false; 385 return false;
628 386
629 bool ret = false;
630 const char *p = strchr (file, ';'); 387 const char *p = strchr (file, ';');
631 388
632 if (p) 389 if (p)
633 { 390 {
634 size_t len = p - file; 391 size_t len = p - file;
… …
636 memcpy (f, file, len); 393 memcpy (f, file, len);
637 f[len] = '\0'; 394 f[len] = '\0';
638 file = f; 395 file = f;
639 } 396 }
640 397
641# ifdef HAVE_PIXBUF 398 bool ret = set_file (s, file);
642 GdkPixbuf *image = gdk_pixbuf_new_from_file (file, NULL); 399 alpha = 0x8000;
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) 400 if (ret)
654 {
655 if (p)
656 bg_set_geometry (p + 1); 401 set_geometry (p ? p + 1 : "");
657 else
658 bg_set_default_geometry ();
659 }
660
661 return ret; 402 return ret;
662} 403}
663 404
405bool
406rxvt_image::set_file (rxvt_screen *s, const char *file)
407{
408 delete img;
409 img = rxvt_img::new_from_file (s, file);
410 return img != 0;
411}
412
664# endif /* BG_IMAGE_FROM_FILE */ 413# endif /* BG_IMAGE_FROM_FILE */
665 414
666# ifdef ENABLE_TRANSPARENCY
667bool 415bool
668rxvt_term::bg_set_blur (const char *geom) 416image_effects::set_blur (const char *geom)
669{ 417{
670 bool changed = false; 418 bool changed = false;
671 unsigned int hr, vr; 419 unsigned int hr, vr;
672 int junk; 420 int junk;
673 int geom_flags = XParseGeometry (geom, &junk, &junk, &hr, &vr); 421 int geom_flags = XParseGeometry (geom, &junk, &junk, &hr, &vr);
… …
690 { 438 {
691 changed = true; 439 changed = true;
692 v_blurRadius = vr; 440 v_blurRadius = vr;
693 } 441 }
694 442
695 if (h_blurRadius && v_blurRadius)
696 bg_flags |= BG_NEEDS_BLUR;
697 else
698 bg_flags &= ~BG_NEEDS_BLUR;
699
700 return changed; 443 return changed;
701} 444}
702 445
703void
704rxvt_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
712bool 446bool
713rxvt_term::bg_set_tint (rxvt_color &new_tint) 447image_effects::set_tint (const rxvt_color &new_tint)
714{ 448{
715 if (!(bg_flags & BG_TINT_SET) || tint != new_tint) 449 if (!tint_set || tint != new_tint)
716 { 450 {
717 tint = new_tint; 451 tint = new_tint;
718 bg_flags |= BG_TINT_SET; 452 tint_set = true;
719 453
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; 454 return true;
731 } 455 }
732 456
733 return false; 457 return false;
734} 458}
735 459
736bool 460bool
737rxvt_term::bg_set_shade (const char *shade_str) 461image_effects::set_shade (const char *shade_str)
738{ 462{
739 int new_shade = atoi (shade_str); 463 int new_shade = atoi (shade_str);
740 464
741 clamp_it (new_shade, -100, 200); 465 clamp_it (new_shade, -100, 200);
742 if (new_shade < 0) 466 if (new_shade < 0)
743 new_shade = 200 - (100 + new_shade); 467 new_shade = 200 - (100 + new_shade);
744 468
745 if (new_shade != shade) 469 if (new_shade != shade)
746 { 470 {
747 shade = new_shade; 471 shade = new_shade;
748 set_tint_shade_flags ();
749 return true; 472 return true;
750 } 473 }
751 474
752 return false; 475 return false;
753} 476}
754 477
755#if XRENDER 478# if ENABLE_TRANSPARENCY
756static void
757get_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
778bool
779rxvt_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
843bool
844rxvt_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/* 479/*
935 * Builds a pixmap of the same size as the terminal window that contains 480 * 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 481 * the tiled portion of the root pixmap that is supposed to be covered by
937 * our window. 482 * our window.
938 */ 483 */
939bool 484bool
940rxvt_term::make_transparency_pixmap () 485rxvt_term::render_root_image ()
941{ 486{
942 bool ret = false;
943
944 /* root dimensions may change from call to call - but Display structure should 487 /* root dimensions may change from call to call - but Display structure should
945 * be always up-to-date, so let's use it : 488 * be always up-to-date, so let's use it :
946 */ 489 */
947 int screen = display->screen; 490 int screen = display->screen;
948 int root_depth = DefaultDepth (dpy, screen);
949 int root_width = DisplayWidth (dpy, screen); 491 int root_width = DisplayWidth (dpy, screen);
950 int root_height = DisplayHeight (dpy, screen); 492 int root_height = DisplayHeight (dpy, screen);
951 unsigned int root_pmap_width, root_pmap_height;
952 int window_width = szHint.width; 493 int window_width = szHint.width;
953 int window_height = szHint.height; 494 int window_height = szHint.height;
954 int sx, sy; 495 int sx, sy;
955 XGCValues gcv;
956 GC gc;
957 496
958 sx = target_x; 497 sx = target_x;
959 sy = target_y; 498 sy = target_y;
499
500 if (!root_img)
501 return false;
960 502
961 /* check if we are outside of the visible part of the virtual screen : */ 503 /* check if we are outside of the visible part of the virtual screen : */
962 if (sx + window_width <= 0 || sy + window_height <= 0 504 if (sx + window_width <= 0 || sy + window_height <= 0
963 || sx >= root_width || sy >= root_height) 505 || sx >= root_width || sy >= root_height)
964 return 0; 506 return 0;
965 507
966 // validate root pixmap and get its size 508 while (sx < 0) sx += root_img->w;
967 if (root_pixmap != None) 509 while (sy < 0) sy += root_img->h;
968 {
969 Window wdummy;
970 int idummy;
971 unsigned int udummy;
972 510
973 allowedxerror = -1; 511 rxvt_img *img = root_img->sub_rect (sx, sy, window_width, window_height);
974 512
975 if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pmap_width, &root_pmap_height, &udummy, &udummy)) 513 if (root_effects.need_blur ())
976 root_pixmap = None; 514 img->blur (root_effects.h_blurRadius, root_effects.v_blurRadius)->replace (img);
977 515
978 allowedxerror = 0; 516 if (root_effects.need_tint ())
979 } 517 tint_image (img, root_effects.tint, root_effects.tint_set, root_effects.shade);
980 518
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); 519 XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
994 Picture dst = XRenderCreatePicture (dpy, recoded_root_pmap, dst_format, 0, 0); 520 img->convert_format (format, pix_colors [Color_bg])->replace (img);
995 521
996 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, root_pmap_width, root_pmap_height); 522 delete bg_img;
523 bg_img = img;
997 524
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; 525 return true;
1069} 526}
1070 527
1071void 528void
1072rxvt_term::bg_set_root_pixmap () 529rxvt_term::bg_set_root_pixmap ()
1073{ 530{
1074 Pixmap new_root_pixmap = get_pixmap_property (xa[XA_XROOTPMAP_ID]); 531 delete root_img;
1075 if (new_root_pixmap == None) 532 root_img = rxvt_img::new_from_root (this);
1076 new_root_pixmap = get_pixmap_property (xa[XA_ESETROOT_PMAP_ID]);
1077
1078 root_pixmap = new_root_pixmap;
1079} 533}
1080# endif /* ENABLE_TRANSPARENCY */ 534# endif /* ENABLE_TRANSPARENCY */
1081 535
1082bool 536void
1083rxvt_term::bg_render () 537rxvt_term::bg_render ()
1084{ 538{
1085 bool transparent = false; 539 if (bg_flags & BG_INHIBIT_RENDER)
540 return;
1086 541
1087 bg_invalidate (); 542 bg_invalidate ();
1088# ifdef ENABLE_TRANSPARENCY 543# if ENABLE_TRANSPARENCY
1089 if (bg_flags & BG_IS_TRANSPARENT) 544 if (bg_flags & BG_IS_TRANSPARENT)
1090 { 545 {
1091 /* we need to re-generate transparency pixmap in that case ! */ 546 /* we need to re-generate transparency pixmap in that case ! */
1092 transparent = make_transparency_pixmap (); 547 if (render_root_image ())
1093 if (transparent)
1094 bg_flags |= BG_IS_VALID; 548 bg_flags |= BG_IS_VALID;
1095 } 549 }
1096# endif 550# endif
1097 551
1098# ifdef BG_IMAGE_FROM_FILE 552# if BG_IMAGE_FROM_FILE
1099 if (bg_flags & BG_IS_FROM_FILE) 553 if (fimage.img)
1100 { 554 {
1101 if (render_image (transparent)) 555 if (render_image (fimage))
1102 bg_flags |= BG_IS_VALID; 556 bg_flags |= BG_IS_VALID;
1103 } 557 }
1104# endif 558# endif
1105 559
1106 if (!(bg_flags & BG_IS_VALID)) 560 if (!(bg_flags & BG_IS_VALID))
1107 { 561 {
1108 if (bg_pixmap != None) 562 delete bg_img;
1109 { 563 bg_img = 0;
1110 XFreePixmap (dpy, bg_pixmap);
1111 bg_pixmap = None;
1112 }
1113 } 564 }
1114 565
1115 scr_recolour (false); 566 scr_recolour (false);
1116 bg_flags |= BG_NEEDS_REFRESH; 567 bg_flags |= BG_NEEDS_REFRESH;
1117 568
1118 bg_valid_since = ev::now (); 569 bg_valid_since = ev::now ();
1119
1120 return true;
1121} 570}
1122 571
1123void 572void
1124rxvt_term::bg_init () 573rxvt_term::bg_init ()
1125{ 574{
1126#ifdef ENABLE_TRANSPARENCY 575#if BG_IMAGE_FROM_FILE
1127 shade = 100; 576 if (rs[Rs_backgroundPixmap])
577 {
578 if (fimage.set_file_geometry (this, rs[Rs_backgroundPixmap])
579 && !bg_window_position_sensitive ())
580 update_background ();
581 }
1128#endif 582#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
1152static inline void
1153fill_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} 583}
1163 584
1164void 585void
1165rxvt_term::tint_ximage (Visual *visual, XImage *ximage) 586rxvt_term::tint_image (rxvt_img *img, rxvt_color &tint, bool tint_set, int shade)
1166{ 587{
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); 588 rgba c (rgba::MAX_CC, rgba::MAX_CC, rgba::MAX_CC);
1199 589
1200 if (bg_flags & BG_TINT_SET) 590 if (tint_set)
1201 tint.get (c); 591 tint.get (c);
1202 592
1203 /* prepare limits for color transformation (each channel is handled separately) */
1204 if (shade > 100) 593 if (shade > 100)
1205 { 594 {
1206 c.r = c.r * (200 - shade) / 100; 595 c.r = c.r * (200 - shade) / 100;
1207 c.g = c.g * (200 - shade) / 100; 596 c.g = c.g * (200 - shade) / 100;
1208 c.b = c.b * (200 - shade) / 100; 597 c.b = c.b * (200 - shade) / 100;
1209
1210 low = 0xffff * (shade - 100) / 100;
1211 } 598 }
1212 else 599 else
1213 { 600 {
1214 c.r = c.r * shade / 100; 601 c.r = c.r * shade / 100;
1215 c.g = c.g * shade / 100; 602 c.g = c.g * shade / 100;
1216 c.b = c.b * shade / 100; 603 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 { 604 }
1230 char *line = ximage->data;
1231 605
1232 for (int y = 0; y < ximage->height; y++) 606 img->contrast (c.r, c.g, c.b, c.a);
1233 { 607
1234 uint32_t *p = (uint32_t *)line; 608 if (shade > 100)
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 } 609 {
1245 else 610 c.a = 0xffff;
611 c.r =
612 c.g =
613 c.b = 0xffff * (shade - 100) / 100;
614 img->brightness (c.r, c.g, c.b, c.a);
1246 { 615 }
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} 616}
1260#endif /* ENABLE_TRANSPARENCY */ 617
618#endif /* HAVE_BG_PIXMAP */

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