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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.2 by root, Sun Jun 3 10:01:32 2012 UTC vs.
Revision 1.50 by root, Thu Jun 7 19:42:09 2012 UTC

1#include <math.h>
1#include "../config.h" 2#include "../config.h"
2#include "rxvt.h" 3#include "rxvt.h"
3 4
4#if HAVE_IMG 5#if HAVE_IMG
5 6
7rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat)
8: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
9 pm(0), ref(0)
10{
11}
12
13rxvt_img::rxvt_img (const rxvt_img &img)
14: s(img.s), x(img.x), y(img.y), w(img.w), h(img.h), format(img.format), repeat(img.repeat), pm(img.pm), ref(img.ref)
15{
16 ++ref->cnt;
17}
18
19#if 0
6rxvt_img::rxvt_img (rxvt_screen *screen, Pixmap *pm, XRenderPictFormat *format, int width, int height) 20rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap)
7: s(screen), pm(pixmap) w(width), h(height), format(format) 21: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap)
8{ 22{
9} 23}
24#endif
10 25
11rxvt_img::rxvt_img (rxvt_screen *screen, GdkPixbuf *pixbuf, 26rxvt_img *
12 int x, int y, int width, int height) 27rxvt_img::new_from_root (rxvt_screen *s)
13: s(screen), w(width), h(height)
14{ 28{
29 Display *dpy = s->display->dpy;
30 unsigned int root_pm_w, root_pm_h;
31 Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]);
32 if (root_pixmap == None)
33 root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]);
34
35 if (root_pixmap == None)
36 return 0;
37
38 Window wdummy;
39 int idummy;
40 unsigned int udummy;
41
42 if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy))
43 return 0;
44
45 rxvt_img *img = new rxvt_img (
46 s,
47 XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
48 0,
49 0,
50 root_pm_w,
51 root_pm_h
52 );
53
54 img->pm = root_pixmap;
55 img->ref = new pixref (root_pm_w, root_pm_h);
56 img->ref->ours = false;
57
58 return img;
59}
60
61rxvt_img *
62rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb)
63{
64 Display *dpy = s->display->dpy;
65
66 int width = gdk_pixbuf_get_width (pb);
67 int height = gdk_pixbuf_get_height (pb);
68
69 if (width > 32767 || height > 32767) // well, we *could* upload in chunks
70 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
71
72 // since we require rgb24/argb32 formats from xrender we assume
73 // that both 24 and 32 bpp MUST be supported by any screen that supports xrender
74 int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24;
75
76 XImage xi;
77
78 xi.width = width;
79 xi.height = height;
80 xi.xoffset = 0;
81 xi.format = ZPixmap;
82 xi.byte_order = LSBFirst; // maybe go for host byte order, because servers are usually local?
83 xi.bitmap_unit = 32;
84 xi.bitmap_bit_order = LSBFirst;
85 xi.bitmap_pad = BitmapPad (dpy);
86 xi.depth = depth;
87 xi.bytes_per_line = 0;
88 xi.bits_per_pixel = 32;
89 xi.red_mask = 0x000000ff;
90 xi.green_mask = 0x0000ff00;
91 xi.blue_mask = 0x00ff0000;
92
93 if (!XInitImage (&xi))
94 rxvt_fatal ("unable to initialise ximage, please report.\n");
95
96 if (height > INT_MAX / xi.bytes_per_line)
97 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
98
99 xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line);
100
101 int rowstride = gdk_pixbuf_get_rowstride (pb);
102
103 assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb));
104 unsigned char *row = gdk_pixbuf_get_pixels (pb);
105 char *line = xi.data;
106
107 for (int y = 0; y < height; y++)
108 {
109 unsigned char *src = row;
110 uint32_t *dst = (uint32_t *)line;
111
112 if (depth == 24)
113 for (int x = 0; x < width; x++)
114 {
115 uint8_t r = *src++;
116 uint8_t g = *src++;
117 uint8_t b = *src++;
118
119 uint32_t v = r | (g << 8) | (b << 16);
120
121 if (ecb_big_endian ())
122 v = ecb_bswap32 (v);
123
124 *dst++ = x;
125 }
126 else
127 for (int x = 0; x < width; x++)
128 {
129 uint32_t v = *(uint32_t *)src; src += 4;
130 v = ecb_big_endian () ? ecb_rotr32 (v, 8) : ecb_rotl32 (v, 8);
131 *dst++ = ecb_bswap32 (v);
132 }
133
134 row += rowstride;
135 line += xi.bytes_per_line;
136 }
137
138 rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height);
139 img->alloc ();
140
141 GC gc = XCreateGC (dpy, img->pm, 0, 0);
142 XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
143 XFreeGC (dpy, gc);
144
145 free (xi.data);
146
147 return img;
148}
149
150rxvt_img *
151rxvt_img::new_from_file (rxvt_screen *s, const char *filename)
152{
153 GError *err = 0;
154 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
155
156 if (!pb)
157 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
158
159 rxvt_img *img = new_from_pixbuf (s, pb);
160
161 g_object_unref (pb);
162
163 return img;
164}
165
166void
167rxvt_img::destroy ()
168{
169 if (--ref->cnt)
170 return;
171
172 if (pm && ref->ours)
173 XFreePixmap (s->display->dpy, pm);
174
175 delete ref;
15} 176}
16 177
17rxvt_img::~rxvt_img () 178rxvt_img::~rxvt_img ()
18{ 179{
19 if (pm) 180 destroy ();
181}
182
183void
184rxvt_img::alloc ()
185{
186 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
187 ref = new pixref (w, h);
188}
189
190Picture
191rxvt_img::src_picture ()
192{
193 Display *dpy = s->display->dpy;
194
195 XRenderPictureAttributes pa;
196 pa.repeat = repeat;
197 Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
198
199 return pic;
200}
201
202void
203rxvt_img::unshare ()
204{
205 if (ref->cnt == 1 && ref->ours)
206 return;
207
208 //TODO: maybe should reify instead
209 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
210 GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
211 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
20 XFreePixmap (s->display->dpy, pm); 212 XFreeGC (s->display->dpy, gc);
213
214 destroy ();
215
216 pm = pm2;
217 ref = new pixref (ref->w, ref->h);
21} 218}
22 219
23void 220void
24rxvt_img::fill (const rxvt_color &c) 221rxvt_img::fill (const rxvt_color &c)
25{ 222{
26 XGCValues gcv; 223 XGCValues gcv;
27 gcv.foreground = c; 224 gcv.foreground = c;
28 GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); 225 GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);
29 XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); 226 XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);
227 XFreeGC (s->display->dpy, gc);
30} 228}
31 229
32rxvt_img *copy () 230static void
231get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params)
33{ 232{
233 double sigma = radius / 2.0;
234 double scale = sqrt (2.0 * M_PI) * sigma;
235 double sum = 0.0;
236
237 for (int i = 0; i < width; i++)
238 {
239 double x = i - width / 2;
240 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
241 sum += kernel[i];
242 }
243
244 params[0] = XDoubleToFixed (width);
245 params[1] = XDoubleToFixed (1);
246
247 for (int i = 0; i < width; i++)
248 params[i+2] = XDoubleToFixed (kernel[i] / sum);
249}
250
251rxvt_img *
252rxvt_img::blur (int rh, int rv)
253{
254 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
255 return clone ();
256
257 Display *dpy = s->display->dpy;
258 int size = max (rh, rv) * 2 + 1;
259 double *kernel = (double *)malloc (size * sizeof (double));
260 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
261 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
262 img->alloc ();
263
264 Picture src = src_picture ();
265
266 XRenderPictureAttributes pa;
267 pa.repeat = RepeatPad;
268 Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);
269
34 Pixmap pm2 = XCreatePixmap (s->display->dpy, pm, w, h, depth); 270 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
35 XCopyArea (s->display->dpy, pm, pm2, 0, 0, w, h, 0, 0); 271 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
36 return new rxvt_img (s, pm2, format, w, h); 272 XFreePixmap (dpy, tmp_pm);
37}
38 273
274 if (kernel && params)
275 {
276 size = rh * 2 + 1;
277 get_gaussian_kernel (rh, size, kernel, params);
278
279 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
280 XRenderComposite (dpy,
281 PictOpSrc,
282 src,
283 None,
284 tmp,
285 0, 0,
286 0, 0,
287 0, 0,
288 w, h);
289
290 size = rv * 2 + 1;
291 get_gaussian_kernel (rv, size, kernel, params);
292 ::swap (params[0], params[1]);
293
294 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
295 XRenderComposite (dpy,
296 PictOpSrc,
297 tmp,
298 None,
299 dst,
300 0, 0,
301 0, 0,
302 0, 0,
303 w, h);
304 }
305
306 free (kernel);
307 free (params);
308 XRenderFreePicture (dpy, src);
309 XRenderFreePicture (dpy, dst);
310 XRenderFreePicture (dpy, tmp);
311
312 return img;
313}
314
315static Picture
316create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
317{
318 Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
319
320 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
321 XRenderPictureAttributes pa;
322 pa.repeat = True;
323 Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
324
325 XFreePixmap (dpy, pixmap);
326
327 return mask;
328}
329
330void
331rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
332{
333 Display *dpy = s->display->dpy;
334 Picture src = create_xrender_mask (dpy, pm, True);
335 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
336
337 XRenderColor mask_c;
338 mask_c.red = r;
339 mask_c.green = g;
340 mask_c.blue = b;
341 mask_c.alpha = a;
342 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
343
344 XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
345
346 XRenderFreePicture (dpy, src);
347 XRenderFreePicture (dpy, dst);
348}
349
350void
351rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
352{
353 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
354 return;
355
356 Display *dpy = s->display->dpy;
357 Picture src = create_xrender_mask (dpy, pm, True);
358 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
359
360 XRenderColor mask_c;
361 mask_c.red = r;
362 mask_c.green = g;
363 mask_c.blue = b;
364 mask_c.alpha = a;
365 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
366
367 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
368
369 XRenderFreePicture (dpy, src);
370 XRenderFreePicture (dpy, dst);
371}
372
373rxvt_img *
374rxvt_img::clone ()
375{
376 return new rxvt_img (*this);
377}
378
379static XRenderPictFormat *
380find_alpha_format_for (Display *dpy, XRenderPictFormat *format)
381{
382 if (format->direct.alphaMask)
383 return format; // already has alpha
384
385 // try to find a suitable alpha format, one bit alpha is enough for our purposes
386 if (format->type == PictTypeDirect)
387 for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
388 if (f->direct.alphaMask
389 && f->type == PictTypeDirect
390 && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
391 && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
392 && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
393 return f;
394
395 // should be a very good fallback
396 return XRenderFindStandardFormat (dpy, PictStandardARGB32);
397}
398
399rxvt_img *
400rxvt_img::reify ()
401{
402 if (x == 0 && y == 0 && w == ref->w && h == ref->h)
403 return clone ();
404
405 Display *dpy = s->display->dpy;
406
407 bool alpha = !format->direct.alphaMask
408 && (x || y)
409 && repeat == RepeatNone;
410
411 rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
412 img->alloc ();
413
414 Picture src = src_picture ();
415 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
416
417 if (alpha)
418 {
419 XRenderColor rc = { 0, 0, 0, 0 };
420 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
421 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h);
422 }
423 else
424 XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);
425
426 XRenderFreePicture (dpy, src);
427 XRenderFreePicture (dpy, dst);
428
429 return img;
430}
431
432rxvt_img *
433rxvt_img::sub_rect (int x, int y, int width, int height)
434{
435 rxvt_img *img = clone ();
436
437 img->x += x;
438 img->y += y;
439
440 if (w != width || h != height)
441 {
442 img->w = width;
443 img->h = height;
444
445 rxvt_img *img2 = img->reify ();
446 delete img;
447 img = img2;
448 }
449
450 return img;
451}
452
453rxvt_img *
454rxvt_img::transform (int new_width, int new_height, double matrix[9])
455{
456 rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat);
457 img->alloc ();
458
459 Display *dpy = s->display->dpy;
460 Picture src = src_picture ();
461 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
462
463 XTransform xfrm;
464
465 for (int i = 0; i < 3; ++i)
466 for (int j = 0; j < 3; ++j)
467 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
468
469#if 0
470 xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
471 xfrm.matrix [1][2] -= XDoubleToFixed (y);
39#endif 472#endif
40 473
474 XRenderSetPictureFilter (dpy, src, "good", 0, 0);
475 XRenderSetPictureTransform (dpy, src, &xfrm);
476 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
477
478 XRenderFreePicture (dpy, src);
479 XRenderFreePicture (dpy, dst);
480
481 return img;
482}
483
484rxvt_img *
485rxvt_img::scale (int new_width, int new_height)
486{
487 if (w == new_width && h == new_height)
488 return clone ();
489
490 double matrix[9] = {
491 w / (double)new_width, 0, 0,
492 0, h / (double)new_height, 0,
493 0, 0, 1
494 };
495
496 int old_repeat_mode = repeat;
497 repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems
498
499 rxvt_img *img = transform (new_width, new_height, matrix);
500
501 repeat = old_repeat_mode;
502 img->repeat = repeat;
503
504 return img;
505}
506
507rxvt_img *
508rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
509{
510 double s = sin (phi);
511 double c = cos (phi);
512
513 double matrix[9] = {
514 c, -s, -c * x + s * y + x,
515 s, c, -s * x - c * y + y,
516 0, 0, 1
517 };
518
519 return transform (new_width, new_height, matrix);
520}
521
522rxvt_img *
523rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg)
524{
525 if (new_format == format)
526 return clone ();
527
528 rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
529 img->alloc ();
530
531 Display *dpy = s->display->dpy;
532 Picture src = src_picture ();
533 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
534 int op = PictOpSrc;
535
536 if (format->direct.alphaMask && !new_format->direct.alphaMask)
537 {
538 // does it have to be that complicated
539 rgba c;
540 bg.get (c);
541
542 XRenderColor rc = { c.r, c.g, c.b, 0xffff };
543 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
544
545 op = PictOpOver;
546 }
547
548 XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
549
550 XRenderFreePicture (dpy, src);
551 XRenderFreePicture (dpy, dst);
552
553 return img;
554}
555
556rxvt_img *
557rxvt_img::blend (rxvt_img *img, double factor)
558{
559 rxvt_img *img2 = clone ();
560 Display *dpy = s->display->dpy;
561 Picture src = img->src_picture ();
562 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
563 Picture mask = create_xrender_mask (dpy, img->pm, False);
564
565 XRenderColor mask_c;
566
567 mask_c.alpha = float_to_component (factor);
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, w, h);
574
575 XRenderFreePicture (dpy, src);
576 XRenderFreePicture (dpy, dst);
577 XRenderFreePicture (dpy, mask);
578
579 return img2;
580}
581
582#endif
583

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