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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.3 by root, Sun Jun 3 10:14:44 2012 UTC vs.
Revision 1.51 by root, Thu Jun 7 20:04:54 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, XRenderPictFormat *format, int width, int height) 20rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap)
7: s(screen), 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)
22{
23}
24#endif
25
26rxvt_img *
27rxvt_img::new_from_root (rxvt_screen *s)
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; //XY only, unused
84 xi.bitmap_bit_order = LSBFirst; //XY only, unused
85 xi.bitmap_pad = BitmapPad (dpy);
86 xi.depth = depth;
87 xi.bytes_per_line = 0;
88 xi.bits_per_pixel = 32; //Z only
89 xi.red_mask = 0x000000ff; //Z only
90 xi.green_mask = 0x0000ff00; //Z only
91 xi.blue_mask = 0x00ff0000; //Z only
92 xi.obdata = 0; // probbaly unused
93
94 if (!XInitImage (&xi))
95 rxvt_fatal ("unable to initialise ximage, please report.\n");
96
97 if (height > INT_MAX / xi.bytes_per_line)
98 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
99
100 xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line);
101
102 int rowstride = gdk_pixbuf_get_rowstride (pb);
103
104 assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb));
105 unsigned char *row = gdk_pixbuf_get_pixels (pb);
106 char *line = xi.data;
107
108 for (int y = 0; y < height; y++)
109 {
110 unsigned char *src = row;
111 uint32_t *dst = (uint32_t *)line;
112
113 if (depth == 24)
114 for (int x = 0; x < width; x++)
115 {
116 uint8_t r = *src++;
117 uint8_t g = *src++;
118 uint8_t b = *src++;
119
120 uint32_t v = r | (g << 8) | (b << 16);
121
122 if (ecb_big_endian ())
123 v = ecb_bswap32 (v);
124
125 *dst++ = v;
126 }
127 else
128 for (int x = 0; x < width; x++)
129 {
130 uint32_t v = *(uint32_t *)src; src += 4;
131
132 if (ecb_big_endian ())
133 v = ecb_bswap32 (v);
134
135 *dst++ = v;
136 }
137
138 row += rowstride;
139 line += xi.bytes_per_line;
140 }
141
142 rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height);
143 img->alloc ();
144
145 GC gc = XCreateGC (dpy, img->pm, 0, 0);
146 XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
147 XFreeGC (dpy, gc);
148
149 free (xi.data);
150
151 return img;
152}
153
154rxvt_img *
155rxvt_img::new_from_file (rxvt_screen *s, const char *filename)
156{
157 GError *err = 0;
158 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
159
160 if (!pb)
161 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
162
163 rxvt_img *img = new_from_pixbuf (s, pb);
164
165 g_object_unref (pb);
166
167 return img;
168}
169
170void
171rxvt_img::destroy ()
172{
173 if (--ref->cnt)
174 return;
175
176 if (pm && ref->ours)
177 XFreePixmap (s->display->dpy, pm);
178
179 delete ref;
180}
181
182rxvt_img::~rxvt_img ()
183{
184 destroy ();
185}
186
187void
188rxvt_img::alloc ()
8{ 189{
9 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); 190 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
191 ref = new pixref (w, h);
10} 192}
11 193
12rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap) 194Picture
13: s(screen), pm(pixmap), w(width), h(height), format(format) 195rxvt_img::src_picture ()
14{ 196{
15} 197 Display *dpy = s->display->dpy;
16 198
17rxvt_img::~rxvt_img () 199 XRenderPictureAttributes pa;
200 pa.repeat = repeat;
201 Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
202
203 return pic;
204}
205
206void
207rxvt_img::unshare ()
18{ 208{
19 if (pm) 209 if (ref->cnt == 1 && ref->ours)
210 return;
211
212 //TODO: maybe should reify instead
213 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
214 GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
215 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
20 XFreePixmap (s->display->dpy, pm); 216 XFreeGC (s->display->dpy, gc);
217
218 destroy ();
219
220 pm = pm2;
221 ref = new pixref (ref->w, ref->h);
21} 222}
22 223
23void 224void
24rxvt_img::fill (const rxvt_color &c) 225rxvt_img::fill (const rxvt_color &c)
25{ 226{
… …
28 GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); 229 GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);
29 XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); 230 XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);
30 XFreeGC (s->display->dpy, gc); 231 XFreeGC (s->display->dpy, gc);
31} 232}
32 233
234static void
235get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params)
236{
237 double sigma = radius / 2.0;
238 double scale = sqrt (2.0 * M_PI) * sigma;
239 double sum = 0.0;
240
241 for (int i = 0; i < width; i++)
242 {
243 double x = i - width / 2;
244 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
245 sum += kernel[i];
246 }
247
248 params[0] = XDoubleToFixed (width);
249 params[1] = XDoubleToFixed (1);
250
251 for (int i = 0; i < width; i++)
252 params[i+2] = XDoubleToFixed (kernel[i] / sum);
253}
254
255rxvt_img *
256rxvt_img::blur (int rh, int rv)
257{
258 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
259 return clone ();
260
261 Display *dpy = s->display->dpy;
262 int size = max (rh, rv) * 2 + 1;
263 double *kernel = (double *)malloc (size * sizeof (double));
264 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
265 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
266 img->alloc ();
267
268 Picture src = src_picture ();
269
270 XRenderPictureAttributes pa;
271 pa.repeat = RepeatPad;
272 Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);
273
274 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
275 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
276 XFreePixmap (dpy, tmp_pm);
277
278 if (kernel && params)
279 {
280 size = rh * 2 + 1;
281 get_gaussian_kernel (rh, size, kernel, params);
282
283 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
284 XRenderComposite (dpy,
285 PictOpSrc,
286 src,
287 None,
288 tmp,
289 0, 0,
290 0, 0,
291 0, 0,
292 w, h);
293
294 size = rv * 2 + 1;
295 get_gaussian_kernel (rv, size, kernel, params);
296 ::swap (params[0], params[1]);
297
298 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
299 XRenderComposite (dpy,
300 PictOpSrc,
301 tmp,
302 None,
303 dst,
304 0, 0,
305 0, 0,
306 0, 0,
307 w, h);
308 }
309
310 free (kernel);
311 free (params);
312 XRenderFreePicture (dpy, src);
313 XRenderFreePicture (dpy, dst);
314 XRenderFreePicture (dpy, tmp);
315
316 return img;
317}
318
319static Picture
320create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
321{
322 Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
323
324 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
325 XRenderPictureAttributes pa;
326 pa.repeat = True;
327 Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
328
329 XFreePixmap (dpy, pixmap);
330
331 return mask;
332}
333
33void 334void
34rxvt_img::blur (int rh, int rv) 335rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
35{ 336{
36 //TODO 337 Display *dpy = s->display->dpy;
338 Picture src = create_xrender_mask (dpy, pm, True);
339 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
340
341 XRenderColor mask_c;
342 mask_c.red = r;
343 mask_c.green = g;
344 mask_c.blue = b;
345 mask_c.alpha = a;
346 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
347
348 XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
349
350 XRenderFreePicture (dpy, src);
351 XRenderFreePicture (dpy, dst);
37} 352}
38 353
39void 354void
40rxvt_img::brightness (double r, double g, double b, double a) 355rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
41{ 356{
42 //TODO 357 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
43} 358 return;
44 359
45void 360 Display *dpy = s->display->dpy;
46rxvt_img::contrast (double r, double g, double b, double a) 361 Picture src = create_xrender_mask (dpy, pm, True);
47{ 362 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
48 //TODO
49}
50 363
51void 364 XRenderColor mask_c;
52rxvt_img::render (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y) 365 mask_c.red = r;
53{ 366 mask_c.green = g;
54 //TODO 367 mask_c.blue = b;
55} 368 mask_c.alpha = a;
369 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
56 370
371 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
372
373 XRenderFreePicture (dpy, src);
374 XRenderFreePicture (dpy, dst);
375}
376
57rxvt_img * 377rxvt_img *
58rxvt_img::copy () 378rxvt_img::clone ()
59{ 379{
60 GC gc = XCreateGC (s->display->dpy, pm, 0, 0); 380 return new rxvt_img (*this);
61 Pixmap pm2 = XCreatePixmap (s->display->dpy, pm, w, h, format->depth);
62 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0);
63 XFreeGC (s->display->dpy, gc);
64 return new rxvt_img (s, format, w, h, pm2);
65} 381}
66 382
383static XRenderPictFormat *
384find_alpha_format_for (Display *dpy, XRenderPictFormat *format)
385{
386 if (format->direct.alphaMask)
387 return format; // already has alpha
388
389 // try to find a suitable alpha format, one bit alpha is enough for our purposes
390 if (format->type == PictTypeDirect)
391 for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
392 if (f->direct.alphaMask
393 && f->type == PictTypeDirect
394 && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
395 && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
396 && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
397 return f;
398
399 // should be a very good fallback
400 return XRenderFindStandardFormat (dpy, PictStandardARGB32);
401}
402
67rxvt_img * 403rxvt_img *
404rxvt_img::reify ()
405{
406 if (x == 0 && y == 0 && w == ref->w && h == ref->h)
407 return clone ();
408
409 Display *dpy = s->display->dpy;
410
411 bool alpha = !format->direct.alphaMask
412 && (x || y)
413 && repeat == RepeatNone;
414
415 rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
416 img->alloc ();
417
418 Picture src = src_picture ();
419 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
420
421 if (alpha)
422 {
423 XRenderColor rc = { 0, 0, 0, 0 };
424 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
425 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h);
426 }
427 else
428 XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);
429
430 XRenderFreePicture (dpy, src);
431 XRenderFreePicture (dpy, dst);
432
433 return img;
434}
435
436rxvt_img *
437rxvt_img::sub_rect (int x, int y, int width, int height)
438{
439 rxvt_img *img = clone ();
440
441 img->x += x;
442 img->y += y;
443
444 if (w != width || h != height)
445 {
446 img->w = width;
447 img->h = height;
448
449 rxvt_img *img2 = img->reify ();
450 delete img;
451 img = img2;
452 }
453
454 return img;
455}
456
457rxvt_img *
68rxvt_img::transform (int new_width, int new_height, double matrix[16]) 458rxvt_img::transform (int new_width, int new_height, double matrix[9])
69{ 459{
70 //TODO 460 rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat);
461 img->alloc ();
462
463 Display *dpy = s->display->dpy;
464 Picture src = src_picture ();
465 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
466
467 XTransform xfrm;
468
469 for (int i = 0; i < 3; ++i)
470 for (int j = 0; j < 3; ++j)
471 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
472
473#if 0
474 xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
475 xfrm.matrix [1][2] -= XDoubleToFixed (y);
476#endif
477
478 XRenderSetPictureFilter (dpy, src, "good", 0, 0);
479 XRenderSetPictureTransform (dpy, src, &xfrm);
480 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
481
482 XRenderFreePicture (dpy, src);
483 XRenderFreePicture (dpy, dst);
484
485 return img;
71} 486}
72 487
73rxvt_img * 488rxvt_img *
74rxvt_img::scale (int new_width, int new_height) 489rxvt_img::scale (int new_width, int new_height)
75{ 490{
76 // use transform 491 if (w == new_width && h == new_height)
77 //TODO 492 return clone ();
78}
79 493
494 double matrix[9] = {
495 w / (double)new_width, 0, 0,
496 0, h / (double)new_height, 0,
497 0, 0, 1
498 };
499
500 int old_repeat_mode = repeat;
501 repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems
502
503 rxvt_img *img = transform (new_width, new_height, matrix);
504
505 repeat = old_repeat_mode;
506 img->repeat = repeat;
507
508 return img;
509}
510
511rxvt_img *
512rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
513{
514 double s = sin (phi);
515 double c = cos (phi);
516
517 double matrix[9] = {
518 c, -s, -c * x + s * y + x,
519 s, c, -s * x - c * y + y,
520 0, 0, 1
521 };
522
523 return transform (new_width, new_height, matrix);
524}
525
526rxvt_img *
527rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg)
528{
529 if (new_format == format)
530 return clone ();
531
532 rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
533 img->alloc ();
534
535 Display *dpy = s->display->dpy;
536 Picture src = src_picture ();
537 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
538 int op = PictOpSrc;
539
540 if (format->direct.alphaMask && !new_format->direct.alphaMask)
541 {
542 // does it have to be that complicated
543 rgba c;
544 bg.get (c);
545
546 XRenderColor rc = { c.r, c.g, c.b, 0xffff };
547 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
548
549 op = PictOpOver;
550 }
551
552 XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
553
554 XRenderFreePicture (dpy, src);
555 XRenderFreePicture (dpy, dst);
556
557 return img;
558}
559
560rxvt_img *
561rxvt_img::blend (rxvt_img *img, double factor)
562{
563 rxvt_img *img2 = clone ();
564 Display *dpy = s->display->dpy;
565 Picture src = img->src_picture ();
566 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
567 Picture mask = create_xrender_mask (dpy, img->pm, False);
568
569 XRenderColor mask_c;
570
571 mask_c.alpha = float_to_component (factor);
572 mask_c.red =
573 mask_c.green =
574 mask_c.blue = 0;
575 XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
576
577 XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);
578
579 XRenderFreePicture (dpy, src);
580 XRenderFreePicture (dpy, dst);
581 XRenderFreePicture (dpy, mask);
582
583 return img2;
584}
80 585
81#endif 586#endif
82 587

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