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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.33 by root, Thu Jun 7 08:12:55 2012 UTC vs.
Revision 1.47 by root, Thu Jun 7 19:06:26 2012 UTC

2#include "../config.h" 2#include "../config.h"
3#include "rxvt.h" 3#include "rxvt.h"
4 4
5#if HAVE_IMG 5#if HAVE_IMG
6 6
7rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height) 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(RepeatNormal), 8: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
9 pm(0), refcnt(0) 9 pm(0), ref(0)
10{ 10{
11} 11}
12 12
13rxvt_img::rxvt_img (const rxvt_img &img) 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), refcnt(img.refcnt) 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{ 15{
16 if (refcnt)
17 ++*refcnt; 16 ++ref->cnt;
18} 17}
19 18
20#if 0 19#if 0
21rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap) 20rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap)
22: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap) 21: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap)
51 root_pm_w, 50 root_pm_w,
52 root_pm_h 51 root_pm_h
53 ); 52 );
54 53
55 img->pm = root_pixmap; 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 int width = gdk_pixbuf_get_width (pb);
65 int height = gdk_pixbuf_get_height (pb);
66
67 if (width > 32767 || height > 32767) // well, we *could* upload in chunks
68 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
69
70 // since we require rgb24/argb32 formats from xrender we assume
71 // that both 24 and 32 bpp MUST be supported by any screen that supports xrender
72 int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24;
73
74 XImage xi;
75
76 xi.width = width;
77 xi.height = height;
78 xi.xoffset = 0;
79 xi.format = ZPixmap;
80 xi.byte_order = MSBFirst; // maybe go for host byte order, because servers are usually local?
81 xi.bitmap_unit = 32;
82 xi.bitmap_bit_order = MSBFirst;
83 xi.bitmap_pad = 32;
84 xi.depth = depth;
85 xi.bytes_per_line = 0;
86 xi.bits_per_pixel = 32;
87 xi.red_mask = 0x00ff0000;
88 xi.green_mask = 0x0000ff00;
89 xi.blue_mask = 0x000000ff;
90
91 if (!XInitImage (&xi))
92 rxvt_fatal ("unable to initialise ximage, please report.\n");
93
94 if (height > INT_MAX / xi.bytes_per_line)
95 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
96
97 xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line);
98
99 int rowstride = gdk_pixbuf_get_rowstride (pb);
100
101 assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb));
102 unsigned char *row = gdk_pixbuf_get_pixels (pb);
103 char *line = xi.data;
104
105 for (int y = 0; y < height; y++)
106 {
107 unsigned char r, g, b, a;
108 unsigned char *data = row;
109
110 if (depth == 24)
111 for (int x = 0; x < width; x++)
112 {
113 r = *data++;
114 g = *data++;
115 b = *data++;
116 *line++ = 0;
117 *line++ = r;
118 *line++ = g;
119 *line++ = b;
120 }
121 else
122 for (int x = 0; x < width; x++)
123 {
124 r = *data++;
125 g = *data++;
126 b = *data++;
127 a = *data++;
128 *line++ = a;
129 *line++ = r;
130 *line++ = g;
131 *line++ = b;
132 }
133
134 row += rowstride;
135 }
136
137 Display *dpy = s->display->dpy;
138
139 rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height);
140 img->alloc ();
141
142 GC gc = XCreateGC (dpy, img->pm, 0, 0);
143 XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
144 XFreeGC (dpy, gc);
145
146 free (xi.data);
56 147
57 return img; 148 return img;
58} 149}
59 150
60rxvt_img * 151rxvt_img *
64 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); 155 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
65 156
66 if (!pb) 157 if (!pb)
67 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); 158 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
68 159
69 rxvt_img *img = new rxvt_img ( 160 rxvt_img *img = new_from_pixbuf (s, pb);
70 s,
71 XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
72 0,
73 0,
74 gdk_pixbuf_get_width (pb),
75 gdk_pixbuf_get_height (pb)
76 );
77 img->alloc ();
78 img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);
79 161
80 g_object_unref (pb); 162 g_object_unref (pb);
81 163
82 return img; 164 return img;
83} 165}
84 166
85void 167void
86rxvt_img::destroy () 168rxvt_img::destroy ()
87{ 169{
88 if (!refcnt || --*refcnt) 170 if (--ref->cnt)
89 return; 171 return;
90 172
91 if (pm) 173 if (pm && ref->ours)
92 XFreePixmap (s->display->dpy, pm); 174 XFreePixmap (s->display->dpy, pm);
93 175
94 delete refcnt; 176 delete ref;
95} 177}
96 178
97rxvt_img::~rxvt_img () 179rxvt_img::~rxvt_img ()
98{ 180{
99 destroy (); 181 destroy ();
101 183
102void 184void
103rxvt_img::alloc () 185rxvt_img::alloc ()
104{ 186{
105 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); 187 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
106 refcnt = new int (1); 188 ref = new pixref (w, h);
189}
190
191Picture
192rxvt_img::src_picture ()
193{
194 Display *dpy = s->display->dpy;
195
196 XRenderPictureAttributes pa;
197 pa.repeat = repeat;
198 Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
199
200 return pic;
107} 201}
108 202
109void 203void
110rxvt_img::unshare () 204rxvt_img::unshare ()
111{ 205{
112 if (refcnt && *refcnt == 1) 206 if (ref->cnt == 1 && ref->ours)
113 return; 207 return;
114 208
209 //TODO: maybe should reify instead
115 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); 210 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
116 GC gc = XCreateGC (s->display->dpy, pm, 0, 0); 211 GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
117 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0); 212 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
118 XFreeGC (s->display->dpy, gc); 213 XFreeGC (s->display->dpy, gc);
119 214
120 destroy (); 215 destroy ();
121 216
122 pm = pm2; 217 pm = pm2;
123 refcnt = new int (1); 218 ref = new pixref (ref->w, ref->h);
124} 219}
125 220
126void 221void
127rxvt_img::fill (const rxvt_color &c) 222rxvt_img::fill (const rxvt_color &c)
128{ 223{
162 257
163 Display *dpy = s->display->dpy; 258 Display *dpy = s->display->dpy;
164 int size = max (rh, rv) * 2 + 1; 259 int size = max (rh, rv) * 2 + 1;
165 double *kernel = (double *)malloc (size * sizeof (double)); 260 double *kernel = (double *)malloc (size * sizeof (double));
166 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); 261 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
167 rxvt_img *img = new rxvt_img (s, format, x, y, w, h); 262 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
168 img->alloc (); 263 img->alloc ();
169 264
265 Picture src = src_picture ();
266
170 XRenderPictureAttributes pa; 267 XRenderPictureAttributes pa;
171
172 pa.repeat = RepeatPad; 268 pa.repeat = RepeatPad;
173 Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa);
174 Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa); 269 Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);
175 270
176 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); 271 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
177 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); 272 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
178 XFreePixmap (dpy, tmp_pm); 273 XFreePixmap (dpy, tmp_pm);
274 369
275 XRenderFreePicture (dpy, src); 370 XRenderFreePicture (dpy, src);
276 XRenderFreePicture (dpy, dst); 371 XRenderFreePicture (dpy, dst);
277} 372}
278 373
279bool 374rxvt_img *
280rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y) 375rxvt_img::clone ()
281{ 376{
282 Display *dpy = s->display->dpy; 377 return new rxvt_img (*this);
378}
283 379
284 if (s->visual->c_class != TrueColor) 380static XRenderPictFormat *
381find_alpha_format_for (Display *dpy, XRenderPictFormat *format)
382{
383 if (format->direct.alphaMask)
384 return format; // already has alpha
385
386 // try to find a suitable alpha format, one bit alpha is enough for our purposes
387 if (format->type == PictTypeDirect)
388 for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
389 if (f->direct.alphaMask
390 && f->type == PictTypeDirect
391 && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
392 && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
393 && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
285 return false; 394 return f;
286 395
287 uint32_t red_mask, green_mask, blue_mask, alpha_mask; 396 // should be a very good fallback
397 return XRenderFindStandardFormat (dpy, PictStandardARGB32);
398}
288 399
289 red_mask = (uint32_t)format->direct.redMask << format->direct.red; 400rxvt_img *
290 green_mask = (uint32_t)format->direct.greenMask << format->direct.green; 401rxvt_img::reify ()
291 blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue; 402{
292 alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha; 403 if (x == 0 && y == 0 && w == ref->w && h == ref->h)
293
294 int width_r = ecb_popcount32 (red_mask);
295 int width_g = ecb_popcount32 (green_mask);
296 int width_b = ecb_popcount32 (blue_mask);
297 int width_a = ecb_popcount32 (alpha_mask);
298
299 if (width_r > 8 || width_g > 8 || width_b > 8 || width_a > 8)
300 return false; 404 return clone ();
301 405
302 int sh_r = ecb_ctz32 (red_mask); 406 Display *dpy = s->display->dpy;
303 int sh_g = ecb_ctz32 (green_mask);
304 int sh_b = ecb_ctz32 (blue_mask);
305 int sh_a = ecb_ctz32 (alpha_mask);
306 407
307 if (width > 32767 || height > 32767) 408 bool alpha = !format->direct.alphaMask
308 return false; 409 && (x || y)
410 && repeat == RepeatNone;
309 411
310 XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0, 412 rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
311 width, height, 32, 0); 413 img->alloc ();
312 if (!ximage)
313 return false;
314 414
315 if (height > INT_MAX / ximage->bytes_per_line 415 Picture src = src_picture ();
316 || !(ximage->data = (char *)malloc (height * ximage->bytes_per_line))) 416 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
417
418 if (alpha)
317 { 419 {
318 XDestroyImage (ximage); 420 XRenderColor rc = { 0, 0, 0, 0 };
319 return false; 421 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
422 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h);
320 } 423 }
321 424 else
322 GC gc = XCreateGC (dpy, pm, 0, 0);
323
324 ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
325
326 int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
327 int channels = gdk_pixbuf_get_n_channels (pixbuf);
328 unsigned char *row = gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * channels;
329 char *line = ximage->data;
330
331 for (int y = 0; y < height; y++)
332 {
333 for (int x = 0; x < width; x++)
334 {
335 unsigned char *pixel = row + x * channels;
336 uint32_t value;
337 unsigned char r, g, b, a;
338
339 if (channels == 4)
340 {
341 a = pixel[3];
342 r = pixel[0] * a / 0xff;
343 g = pixel[1] * a / 0xff;
344 b = pixel[2] * a / 0xff;
345 }
346 else
347 {
348 a = 0xff;
349 r = pixel[0];
350 g = pixel[1];
351 b = pixel[2];
352 }
353
354 value = ((r >> (8 - width_r)) << sh_r)
355 | ((g >> (8 - width_g)) << sh_g)
356 | ((b >> (8 - width_b)) << sh_b)
357 | ((a >> (8 - width_a)) << sh_a);
358
359 if (ximage->bits_per_pixel == 32)
360 ((uint32_t *)line)[x] = value;
361 else
362 XPutPixel (ximage, x, y, value);
363 }
364
365 row += rowstride;
366 line += ximage->bytes_per_line;
367 }
368
369 XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);
370 XDestroyImage (ximage);
371 XFreeGC (dpy, gc);
372
373 return true;
374}
375
376rxvt_img *
377rxvt_img::clone ()
378{
379 return new rxvt_img (*this);
380}
381
382rxvt_img *
383rxvt_img::reify ()
384{
385 rxvt_img *img = new rxvt_img (s, format, 0, 0, w, h);
386 img->alloc ();
387
388 // todo, if x==0 and y==0 and w==real width we could clone
389 // but that involves an rtt to find pixmap width.
390
391 Display *dpy = s->display->dpy;
392 XRenderPictureAttributes pa;
393 pa.repeat = repeat;
394 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
395 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
396
397 XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); 425 XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);
398 426
399 XRenderFreePicture (dpy, src); 427 XRenderFreePicture (dpy, src);
400 XRenderFreePicture (dpy, dst); 428 XRenderFreePicture (dpy, dst);
401 429
402 return img; 430 return img;
403} 431}
407{ 435{
408 rxvt_img *img = clone (); 436 rxvt_img *img = clone ();
409 437
410 img->x += x; 438 img->x += x;
411 img->y += y; 439 img->y += y;
440
441 if (w != width || h != height)
442 {
412 img->w = width; 443 img->w = width;
413 img->h = height; 444 img->h = height;
445
446 rxvt_img *img2 = img->reify ();
447 delete img;
448 img = img2;
449 }
414 450
415 return img; 451 return img;
416} 452}
417 453
418rxvt_img * 454rxvt_img *
419rxvt_img::transform (int new_width, int new_height, double matrix[9]) 455rxvt_img::transform (int new_width, int new_height, double matrix[9])
420{ 456{
421 rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height); 457 rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat);
422 img->alloc (); 458 img->alloc ();
423 459
424 Display *dpy = s->display->dpy; 460 Display *dpy = s->display->dpy;
425 XRenderPictureAttributes pa; 461 Picture src = src_picture ();
426 pa.repeat = repeat;
427 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
428 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); 462 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
429 463
430 XTransform xfrm; 464 XTransform xfrm;
431 465
432 for (int i = 0; i < 3; ++i) 466 for (int i = 0; i < 3; ++i)
433 for (int j = 0; j < 3; ++j) 467 for (int j = 0; j < 3; ++j)
434 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); 468 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
435 469
470#if 0
436 xfrm.matrix [0][2] += XDoubleToFixed (x);//TODO 471 xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
437 xfrm.matrix [0][3] += XDoubleToFixed (y); 472 xfrm.matrix [1][2] -= XDoubleToFixed (y);
473#endif
438 474
439 XRenderSetPictureFilter (dpy, src, "good", 0, 0); 475 XRenderSetPictureFilter (dpy, src, "good", 0, 0);
440 XRenderSetPictureTransform (dpy, src, &xfrm); 476 XRenderSetPictureTransform (dpy, src, &xfrm);
441 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); 477 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
442 478
447} 483}
448 484
449rxvt_img * 485rxvt_img *
450rxvt_img::scale (int new_width, int new_height) 486rxvt_img::scale (int new_width, int new_height)
451{ 487{
488 if (w == new_width && h == new_height)
489 return clone ();
490
452 double matrix[9] = { 491 double matrix[9] = {
453 w / (double)new_width, 0, 0, 492 w / (double)new_width, 0, 0,
454 0, h / (double)new_height, 0, 493 0, h / (double)new_height, 0,
455 0, 0, 1 494 0, 0, 1
456 }; 495 };
457 496
497 int old_repeat_mode = repeat;
498 repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems
499
458 return transform (new_width, new_height, matrix); 500 rxvt_img *img = transform (new_width, new_height, matrix);
501
502 repeat = old_repeat_mode;
503 img->repeat = repeat;
504
505 return img;
459} 506}
460 507
461rxvt_img * 508rxvt_img *
462rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi) 509rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
463{ 510{
472 519
473 return transform (new_width, new_height, matrix); 520 return transform (new_width, new_height, matrix);
474} 521}
475 522
476rxvt_img * 523rxvt_img *
477rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg) 524rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg)
478{ 525{
479 if (new_format == format) 526 if (new_format == format)
480 return clone (); 527 return clone ();
481 528
482 rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h); 529 rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
483 img->alloc (); 530 img->alloc ();
484 531
485 Display *dpy = s->display->dpy; 532 Display *dpy = s->display->dpy;
486 Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0); 533 Picture src = src_picture ();
487 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); 534 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
488 int op = PictOpSrc; 535 int op = PictOpSrc;
489 536
490 if (format->direct.alphaMask && !new_format->direct.alphaMask) 537 if (format->direct.alphaMask && !new_format->direct.alphaMask)
491 { 538 {
510rxvt_img * 557rxvt_img *
511rxvt_img::blend (rxvt_img *img, double factor) 558rxvt_img::blend (rxvt_img *img, double factor)
512{ 559{
513 rxvt_img *img2 = clone (); 560 rxvt_img *img2 = clone ();
514 Display *dpy = s->display->dpy; 561 Display *dpy = s->display->dpy;
515 Picture src = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); 562 Picture src = img->src_picture ();
516 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); 563 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
517 Picture mask = create_xrender_mask (dpy, img->pm, False); 564 Picture mask = create_xrender_mask (dpy, img->pm, False);
518 565
519 XRenderColor mask_c; 566 XRenderColor mask_c;
520 567

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