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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 1.48 by root, Thu Jun 7 19:24:02 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 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 = MSBFirst; // maybe go for host byte order, because servers are usually local?
83 xi.bitmap_unit = 32;
84 xi.bitmap_bit_order = MSBFirst;
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 = 0x00ff0000;
90 xi.green_mask = 0x0000ff00;
91 xi.blue_mask = 0x000000ff;
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 r, g, b, a;
110 unsigned char *data = row;
111
112 if (depth == 24)
113 for (int x = 0; x < width; x++)
114 {
115 asm volatile("nop");
116 r = *data++;
117 g = *data++;
118 b = *data++;
119 *line++ = 0;
120 *line++ = r;
121 *line++ = g;
122 *line++ = b;
123 asm volatile("nop");
124 }
125 else
126 for (int x = 0; x < width; x++)
127 {
128 uint32_t v = *(uint32_t *)data; data += 4;
129 v = ecb_big_endian () ? ecb_rotr32 (v, 8) : ecb_rotl32 (v, 8);
130 *(uint32_t *)line = x; line += 4;
131 }
132
133 row += rowstride;
134 }
135
136 rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height);
137 img->alloc ();
138
139 GC gc = XCreateGC (dpy, img->pm, 0, 0);
140 XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
141 XFreeGC (dpy, gc);
142
143 free (xi.data);
56 144
57 return img; 145 return img;
58} 146}
59 147
60rxvt_img * 148rxvt_img *
64 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); 152 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
65 153
66 if (!pb) 154 if (!pb)
67 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); 155 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
68 156
69 rxvt_img *img = new rxvt_img ( 157 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);
79 158
80 g_object_unref (pb); 159 g_object_unref (pb);
81 160
82 return img; 161 return img;
83} 162}
84 163
85void 164void
86rxvt_img::destroy () 165rxvt_img::destroy ()
87{ 166{
88 if (!refcnt || --*refcnt) 167 if (--ref->cnt)
89 return; 168 return;
90 169
91 if (pm) 170 if (pm && ref->ours)
92 XFreePixmap (s->display->dpy, pm); 171 XFreePixmap (s->display->dpy, pm);
93 172
94 delete refcnt; 173 delete ref;
95} 174}
96 175
97rxvt_img::~rxvt_img () 176rxvt_img::~rxvt_img ()
98{ 177{
99 destroy (); 178 destroy ();
101 180
102void 181void
103rxvt_img::alloc () 182rxvt_img::alloc ()
104{ 183{
105 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); 184 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
106 refcnt = new int (1); 185 ref = new pixref (w, h);
186}
187
188Picture
189rxvt_img::src_picture ()
190{
191 Display *dpy = s->display->dpy;
192
193 XRenderPictureAttributes pa;
194 pa.repeat = repeat;
195 Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
196
197 return pic;
107} 198}
108 199
109void 200void
110rxvt_img::unshare () 201rxvt_img::unshare ()
111{ 202{
112 if (refcnt && *refcnt == 1) 203 if (ref->cnt == 1 && ref->ours)
113 return; 204 return;
114 205
206 //TODO: maybe should reify instead
115 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); 207 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); 208 GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
117 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0); 209 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
118 XFreeGC (s->display->dpy, gc); 210 XFreeGC (s->display->dpy, gc);
119 211
120 destroy (); 212 destroy ();
121 213
122 pm = pm2; 214 pm = pm2;
123 refcnt = new int (1); 215 ref = new pixref (ref->w, ref->h);
124} 216}
125 217
126void 218void
127rxvt_img::fill (const rxvt_color &c) 219rxvt_img::fill (const rxvt_color &c)
128{ 220{
162 254
163 Display *dpy = s->display->dpy; 255 Display *dpy = s->display->dpy;
164 int size = max (rh, rv) * 2 + 1; 256 int size = max (rh, rv) * 2 + 1;
165 double *kernel = (double *)malloc (size * sizeof (double)); 257 double *kernel = (double *)malloc (size * sizeof (double));
166 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); 258 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
167 rxvt_img *img = new rxvt_img (s, format, x, y, w, h); 259 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
168 img->alloc (); 260 img->alloc ();
169 261
262 Picture src = src_picture ();
263
170 XRenderPictureAttributes pa; 264 XRenderPictureAttributes pa;
171
172 pa.repeat = RepeatPad; 265 pa.repeat = RepeatPad;
173 Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa);
174 Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa); 266 Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);
175 267
176 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); 268 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
177 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); 269 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
178 XFreePixmap (dpy, tmp_pm); 270 XFreePixmap (dpy, tmp_pm);
274 366
275 XRenderFreePicture (dpy, src); 367 XRenderFreePicture (dpy, src);
276 XRenderFreePicture (dpy, dst); 368 XRenderFreePicture (dpy, dst);
277} 369}
278 370
279bool 371rxvt_img *
280rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y) 372rxvt_img::clone ()
281{ 373{
282 Display *dpy = s->display->dpy; 374 return new rxvt_img (*this);
375}
283 376
284 if (s->visual->c_class != TrueColor) 377static XRenderPictFormat *
378find_alpha_format_for (Display *dpy, XRenderPictFormat *format)
379{
380 if (format->direct.alphaMask)
381 return format; // already has alpha
382
383 // try to find a suitable alpha format, one bit alpha is enough for our purposes
384 if (format->type == PictTypeDirect)
385 for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
386 if (f->direct.alphaMask
387 && f->type == PictTypeDirect
388 && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
389 && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
390 && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
285 return false; 391 return f;
286 392
287 uint32_t red_mask, green_mask, blue_mask, alpha_mask; 393 // should be a very good fallback
394 return XRenderFindStandardFormat (dpy, PictStandardARGB32);
395}
288 396
289 red_mask = (uint32_t)format->direct.redMask << format->direct.red; 397rxvt_img *
290 green_mask = (uint32_t)format->direct.greenMask << format->direct.green; 398rxvt_img::reify ()
291 blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue; 399{
292 alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha; 400 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; 401 return clone ();
301 402
302 int sh_r = ecb_ctz32 (red_mask); 403 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);
306 404
307 if (width > 32767 || height > 32767) 405 bool alpha = !format->direct.alphaMask
308 return false; 406 && (x || y)
407 && repeat == RepeatNone;
309 408
310 XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0, 409 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); 410 img->alloc ();
312 if (!ximage)
313 return false;
314 411
315 if (height > INT_MAX / ximage->bytes_per_line 412 Picture src = src_picture ();
316 || !(ximage->data = (char *)malloc (height * ximage->bytes_per_line))) 413 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
414
415 if (alpha)
317 { 416 {
318 XDestroyImage (ximage); 417 XRenderColor rc = { 0, 0, 0, 0 };
319 return false; 418 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
419 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h);
320 } 420 }
321 421 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); 422 XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);
398 423
399 XRenderFreePicture (dpy, src); 424 XRenderFreePicture (dpy, src);
400 XRenderFreePicture (dpy, dst); 425 XRenderFreePicture (dpy, dst);
401 426
402 return img; 427 return img;
403} 428}
407{ 432{
408 rxvt_img *img = clone (); 433 rxvt_img *img = clone ();
409 434
410 img->x += x; 435 img->x += x;
411 img->y += y; 436 img->y += y;
437
438 if (w != width || h != height)
439 {
412 img->w = width; 440 img->w = width;
413 img->h = height; 441 img->h = height;
442
443 rxvt_img *img2 = img->reify ();
444 delete img;
445 img = img2;
446 }
414 447
415 return img; 448 return img;
416} 449}
417 450
418rxvt_img * 451rxvt_img *
419rxvt_img::transform (int new_width, int new_height, double matrix[9]) 452rxvt_img::transform (int new_width, int new_height, double matrix[9])
420{ 453{
421 rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height); 454 rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat);
422 img->alloc (); 455 img->alloc ();
423 456
424 Display *dpy = s->display->dpy; 457 Display *dpy = s->display->dpy;
425 XRenderPictureAttributes pa; 458 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); 459 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
429 460
430 XTransform xfrm; 461 XTransform xfrm;
431 462
432 for (int i = 0; i < 3; ++i) 463 for (int i = 0; i < 3; ++i)
433 for (int j = 0; j < 3; ++j) 464 for (int j = 0; j < 3; ++j)
434 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); 465 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
435 466
467#if 0
436 xfrm.matrix [0][2] += XDoubleToFixed (x);//TODO 468 xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
437 xfrm.matrix [0][3] += XDoubleToFixed (y); 469 xfrm.matrix [1][2] -= XDoubleToFixed (y);
470#endif
438 471
439 XRenderSetPictureFilter (dpy, src, "good", 0, 0); 472 XRenderSetPictureFilter (dpy, src, "good", 0, 0);
440 XRenderSetPictureTransform (dpy, src, &xfrm); 473 XRenderSetPictureTransform (dpy, src, &xfrm);
441 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); 474 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
442 475
447} 480}
448 481
449rxvt_img * 482rxvt_img *
450rxvt_img::scale (int new_width, int new_height) 483rxvt_img::scale (int new_width, int new_height)
451{ 484{
485 if (w == new_width && h == new_height)
486 return clone ();
487
452 double matrix[9] = { 488 double matrix[9] = {
453 w / (double)new_width, 0, 0, 489 w / (double)new_width, 0, 0,
454 0, h / (double)new_height, 0, 490 0, h / (double)new_height, 0,
455 0, 0, 1 491 0, 0, 1
456 }; 492 };
457 493
494 int old_repeat_mode = repeat;
495 repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems
496
458 return transform (new_width, new_height, matrix); 497 rxvt_img *img = transform (new_width, new_height, matrix);
498
499 repeat = old_repeat_mode;
500 img->repeat = repeat;
501
502 return img;
459} 503}
460 504
461rxvt_img * 505rxvt_img *
462rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi) 506rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
463{ 507{
472 516
473 return transform (new_width, new_height, matrix); 517 return transform (new_width, new_height, matrix);
474} 518}
475 519
476rxvt_img * 520rxvt_img *
477rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg) 521rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg)
478{ 522{
479 if (new_format == format) 523 if (new_format == format)
480 return clone (); 524 return clone ();
481 525
482 rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h); 526 rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
483 img->alloc (); 527 img->alloc ();
484 528
485 Display *dpy = s->display->dpy; 529 Display *dpy = s->display->dpy;
486 Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0); 530 Picture src = src_picture ();
487 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); 531 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
488 int op = PictOpSrc; 532 int op = PictOpSrc;
489 533
490 if (format->direct.alphaMask && !new_format->direct.alphaMask) 534 if (format->direct.alphaMask && !new_format->direct.alphaMask)
491 { 535 {
510rxvt_img * 554rxvt_img *
511rxvt_img::blend (rxvt_img *img, double factor) 555rxvt_img::blend (rxvt_img *img, double factor)
512{ 556{
513 rxvt_img *img2 = clone (); 557 rxvt_img *img2 = clone ();
514 Display *dpy = s->display->dpy; 558 Display *dpy = s->display->dpy;
515 Picture src = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); 559 Picture src = img->src_picture ();
516 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); 560 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
517 Picture mask = create_xrender_mask (dpy, img->pm, False); 561 Picture mask = create_xrender_mask (dpy, img->pm, False);
518 562
519 XRenderColor mask_c; 563 XRenderColor mask_c;
520 564

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