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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.52 by root, Thu Jun 7 20:20:35 2012 UTC vs.
Revision 1.74 by root, Sat Jun 9 19:20:04 2012 UTC

… …
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), ref(img.ref) 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 ++ref->cnt; 16 ++ref->cnt;
17} 17}
18
19#if 0
20rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap)
21: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap)
22{
23}
24#endif
25 18
26rxvt_img * 19rxvt_img *
27rxvt_img::new_from_root (rxvt_screen *s) 20rxvt_img::new_from_root (rxvt_screen *s)
28{ 21{
29 Display *dpy = s->display->dpy; 22 Display *dpy = s->display->dpy;
… …
56 img->ref->ours = false; 49 img->ref->ours = false;
57 50
58 return img; 51 return img;
59} 52}
60 53
54# if HAVE_PIXBUF
61rxvt_img * 55rxvt_img *
62rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) 56rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb)
63{ 57{
64 Display *dpy = s->display->dpy; 58 Display *dpy = s->display->dpy;
65 59
… …
70 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); 64 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
71 65
72 // since we require rgb24/argb32 formats from xrender we assume 66 // 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 67 // 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; 68 int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24;
69
70 int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
75 71
76 XImage xi; 72 XImage xi;
77 73
78 xi.width = width; 74 xi.width = width;
79 xi.height = height; 75 xi.height = height;
80 xi.xoffset = 0; 76 xi.xoffset = 0;
81 xi.format = ZPixmap; 77 xi.format = ZPixmap;
82 xi.byte_order = LSBFirst; // maybe go for host byte order, because servers are usually local? 78 xi.byte_order = ImageByteOrder (dpy);
83 xi.bitmap_unit = 32; //XY only, unused 79 xi.bitmap_unit = 0; //XY only, unused
84 xi.bitmap_bit_order = LSBFirst; //XY only, unused 80 xi.bitmap_bit_order = 0; //XY only, unused
85 xi.bitmap_pad = BitmapPad (dpy); 81 xi.bitmap_pad = BitmapPad (dpy);
86 xi.depth = depth; 82 xi.depth = depth;
87 xi.bytes_per_line = 0; 83 xi.bytes_per_line = 0;
88 xi.bits_per_pixel = 32; //Z only 84 xi.bits_per_pixel = 32; //Z only
89 xi.red_mask = 0x00000000; //Z only, unused 85 xi.red_mask = 0x00000000; //Z only, unused
90 xi.green_mask = 0x00000000; //Z only, unused 86 xi.green_mask = 0x00000000; //Z only, unused
91 xi.blue_mask = 0x00000000; //Z only, unused 87 xi.blue_mask = 0x00000000; //Z only, unused
92 xi.obdata = 0; // probably unused 88 xi.obdata = 0; // probably unused
93 89
90 bool byte_order_mismatch = byte_order != xi.byte_order;
91
94 if (!XInitImage (&xi)) 92 if (!XInitImage (&xi))
95 rxvt_fatal ("unable to initialise ximage, please report.\n"); 93 rxvt_fatal ("unable to initialise ximage, please report.\n");
96 94
97 if (height > INT_MAX / xi.bytes_per_line) 95 if (height > INT_MAX / xi.bytes_per_line)
98 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); 96 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
… …
115 { 113 {
116 uint8_t r = *src++; 114 uint8_t r = *src++;
117 uint8_t g = *src++; 115 uint8_t g = *src++;
118 uint8_t b = *src++; 116 uint8_t b = *src++;
119 117
120 uint32_t v = r | (g << 8) | (b << 16); 118 uint32_t v = (r << 16) | (g << 8) | b;
121 119
122 if (ecb_big_endian ()) 120 if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
123 v = ecb_bswap32 (v); 121 v = ecb_bswap32 (v);
124 122
125 *dst++ = v; 123 *dst++ = v;
126 } 124 }
127 else 125 else
128 for (int x = 0; x < width; x++) 126 for (int x = 0; x < width; x++)
129 { 127 {
130 uint32_t v = *(uint32_t *)src; src += 4; 128 uint32_t v = *(uint32_t *)src; src += 4;
131 129
132 if (ecb_little_endian ()) 130 if (ecb_big_endian ())
133 v = ecb_bswap32 (v); 131 v = ecb_bswap32 (v);
134 132
133 v = ecb_rotl32 (v, 8); // abgr to bgra
134
135 if (!byte_order_mismatch)
135 v = ecb_rotr32 (v, 8); 136 v = ecb_bswap32 (v);
136 137
137 *dst++ = v; 138 *dst++ = v;
138 } 139 }
139 140
140 row += rowstride; 141 row += rowstride;
… …
166 167
167 g_object_unref (pb); 168 g_object_unref (pb);
168 169
169 return img; 170 return img;
170} 171}
172# endif
171 173
172void 174void
173rxvt_img::destroy () 175rxvt_img::destroy ()
174{ 176{
175 if (--ref->cnt) 177 if (--ref->cnt)
… …
209rxvt_img::unshare () 211rxvt_img::unshare ()
210{ 212{
211 if (ref->cnt == 1 && ref->ours) 213 if (ref->cnt == 1 && ref->ours)
212 return; 214 return;
213 215
214 //TODO: maybe should reify instead
215 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); 216 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
216 GC gc = XCreateGC (s->display->dpy, pm, 0, 0); 217 GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
217 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); 218 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
218 XFreeGC (s->display->dpy, gc); 219 XFreeGC (s->display->dpy, gc);
219 220
… …
265 double *kernel = (double *)malloc (size * sizeof (double)); 266 double *kernel = (double *)malloc (size * sizeof (double));
266 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); 267 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
267 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); 268 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
268 img->alloc (); 269 img->alloc ();
269 270
270 Picture src = src_picture ();
271
272 XRenderPictureAttributes pa; 271 XRenderPictureAttributes pa;
273 pa.repeat = RepeatPad; 272 pa.repeat = RepeatPad;
274 Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa); 273 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
274 Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
275 275
276 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); 276 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
277 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); 277 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
278 XFreePixmap (dpy, tmp_pm); 278 XFreePixmap (dpy, tmp_pm);
279 279
… …
295 295
296 size = rv * 2 + 1; 296 size = rv * 2 + 1;
297 get_gaussian_kernel (rv, size, kernel, params); 297 get_gaussian_kernel (rv, size, kernel, params);
298 ::swap (params[0], params[1]); 298 ::swap (params[0], params[1]);
299 299
300 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); 300 XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
301 XRenderComposite (dpy, 301 XRenderComposite (dpy,
302 PictOpSrc, 302 PictOpSrc,
303 tmp, 303 tmp,
304 None, 304 None,
305 dst, 305 dst,
… …
323{ 323{
324 Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); 324 Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
325 325
326 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); 326 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
327 XRenderPictureAttributes pa; 327 XRenderPictureAttributes pa;
328 pa.repeat = True; 328 pa.repeat = RepeatNormal;
329 Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa); 329 Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
330 330
331 XFreePixmap (dpy, pixmap); 331 XFreePixmap (dpy, pixmap);
332 332
333 return mask; 333 return mask;
334} 334}
335 335
336static void
337extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
338{
339 int32_t x = clamp (c, cl0, cl1);
340 c -= x;
341 xc = x;
342}
343
344static bool
345extract (int32_t cl0, int32_t cl1, int32_t &r, int32_t &g, int32_t &b, int32_t &a, unsigned short &xr, unsigned short &xg, unsigned short &xb, unsigned short &xa)
346{
347 extract (cl0, cl1, r, xr);
348 extract (cl0, cl1, g, xg);
349 extract (cl0, cl1, b, xb);
350 extract (cl0, cl1, a, xa);
351
352 return xr | xg | xb | xa;
353}
354
336void 355void
337rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a) 356rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
338{ 357{
358 unshare ();
359
339 Display *dpy = s->display->dpy; 360 Display *dpy = s->display->dpy;
340 Picture src = create_xrender_mask (dpy, pm, True);
341 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 361 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
342 362
363 // loop should not be needed for brightness, as only -1..1 makes sense
364 //while (r | g | b | a)
365 {
366 unsigned short xr, xg, xb, xa;
343 XRenderColor mask_c; 367 XRenderColor mask_c;
344 mask_c.red = r; 368
345 mask_c.green = g; 369 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
346 mask_c.blue = b; 370 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
347 mask_c.alpha = a; 371
372 if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
373 {
374 XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
375 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
376 mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
377 mask_c.green = -mask_c.green;
378 mask_c.blue = -mask_c.blue;
379 mask_c.alpha = -mask_c.alpha;
380 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
381 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
382 }
383 }
384
385 XRenderFreePicture (dpy, dst);
386}
387
388void
389rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
390{
391 if (r < 0 || g < 0 || b < 0 || a < 0)
392 rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
393
394 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
395 img->alloc ();
396
397 {
398 rxvt_color empty;
399 empty.set (s, rgba (0, 0, 0, 0));
400 img->fill (empty);
401 }
402
403 // premultiply (yeah, these are not exact, sue me or fix it)
404 r = (r * (a >> 8)) >> 8;
405 g = (g * (a >> 8)) >> 8;
406 b = (b * (a >> 8)) >> 8;
407
408 Display *dpy = s->display->dpy;
409
410 Picture src = src_picture ();
411 Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
412 Picture mul = create_xrender_mask (dpy, pm, True);
413
414 XRenderPictureAttributes pa;
415 pa.component_alpha = 1;
416 XRenderChangePicture (dpy, mul, CPComponentAlpha, &pa);
417
418 //TODO: this operator does not yet implement some useful contrast
419 while (r | g | b | a)
420 {
421 unsigned short xr, xg, xb, xa;
422 XRenderColor mask_c;
423
424 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
425 {
348 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 426 XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1);
349
350 XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 427 XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h);
428 }
429 }
351 430
431 XRenderFreePicture (dpy, mul);
432 XRenderFreePicture (dpy, dst);
352 XRenderFreePicture (dpy, src); 433 XRenderFreePicture (dpy, src);
353 XRenderFreePicture (dpy, dst);
354}
355 434
356void 435 ::swap (img->ref, ref);
357rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a) 436 ::swap (img->pm , pm );
358{
359 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
360 return;
361 437
362 Display *dpy = s->display->dpy; 438 delete img;
363 Picture src = create_xrender_mask (dpy, pm, True);
364 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
365
366 XRenderColor mask_c;
367 mask_c.red = r;
368 mask_c.green = g;
369 mask_c.blue = b;
370 mask_c.alpha = a;
371 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
372
373 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
374
375 XRenderFreePicture (dpy, src);
376 XRenderFreePicture (dpy, dst);
377} 439}
378 440
379rxvt_img * 441rxvt_img *
380rxvt_img::clone () 442rxvt_img::clone ()
381{ 443{
… …
408 if (x == 0 && y == 0 && w == ref->w && h == ref->h) 470 if (x == 0 && y == 0 && w == ref->w && h == ref->h)
409 return clone (); 471 return clone ();
410 472
411 Display *dpy = s->display->dpy; 473 Display *dpy = s->display->dpy;
412 474
475 // add an alpha channel if...
413 bool alpha = !format->direct.alphaMask 476 bool alpha = !format->direct.alphaMask // pixmap has none yet
414 && (x || y) 477 && (x || y) // we need one because of non-zero offset
415 && repeat == RepeatNone; 478 && repeat == RepeatNone; // and we have no good pixels to fill with
416 479
417 rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); 480 rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
418 img->alloc (); 481 img->alloc ();
419 482
420 Picture src = src_picture (); 483 Picture src = src_picture ();
… …
470 533
471 for (int i = 0; i < 3; ++i) 534 for (int i = 0; i < 3; ++i)
472 for (int j = 0; j < 3; ++j) 535 for (int j = 0; j < 3; ++j)
473 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); 536 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
474 537
475#if 0
476 xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO 538 xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
477 xfrm.matrix [1][2] -= XDoubleToFixed (y); 539 xfrm.matrix [1][2] -= XDoubleToFixed (y);
478#endif
479 540
480 XRenderSetPictureFilter (dpy, src, "good", 0, 0); 541 XRenderSetPictureFilter (dpy, src, "good", 0, 0);
481 XRenderSetPictureTransform (dpy, src, &xfrm); 542 XRenderSetPictureTransform (dpy, src, &xfrm);
482 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); 543 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
483 544
… …
564{ 625{
565 rxvt_img *img2 = clone (); 626 rxvt_img *img2 = clone ();
566 Display *dpy = s->display->dpy; 627 Display *dpy = s->display->dpy;
567 Picture src = img->src_picture (); 628 Picture src = img->src_picture ();
568 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); 629 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
569 Picture mask = create_xrender_mask (dpy, img->pm, False); 630
631 Pixmap pixmap = XCreatePixmap (dpy, img->pm, 1, 1, 8);
632 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, PictStandardA8);
633 XRenderPictureAttributes pa;
634 pa.repeat = True;
635 Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
636 XFreePixmap (dpy, pixmap);
570 637
571 XRenderColor mask_c; 638 XRenderColor mask_c;
572 639
573 mask_c.alpha = float_to_component (factor); 640 mask_c.alpha = float_to_component (factor);
574 mask_c.red = 641 mask_c.red =

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