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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.55 by root, Thu Jun 7 20:26:21 2012 UTC vs.
Revision 1.76 by root, Sun Jun 10 10:29:26 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
… …
69 if (width > 32767 || height > 32767) // well, we *could* upload in chunks 63 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"); 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;
75 68
76 int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; 69 int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
77 70
78 XImage xi; 71 XImage xi;
79 72
… …
83 xi.format = ZPixmap; 76 xi.format = ZPixmap;
84 xi.byte_order = ImageByteOrder (dpy); 77 xi.byte_order = ImageByteOrder (dpy);
85 xi.bitmap_unit = 0; //XY only, unused 78 xi.bitmap_unit = 0; //XY only, unused
86 xi.bitmap_bit_order = 0; //XY only, unused 79 xi.bitmap_bit_order = 0; //XY only, unused
87 xi.bitmap_pad = BitmapPad (dpy); 80 xi.bitmap_pad = BitmapPad (dpy);
88 xi.depth = depth; 81 xi.depth = 32;
89 xi.bytes_per_line = 0; 82 xi.bytes_per_line = 0;
90 xi.bits_per_pixel = 32; //Z only 83 xi.bits_per_pixel = 32; //Z only
91 xi.red_mask = 0x00000000; //Z only, unused 84 xi.red_mask = 0x00000000; //Z only, unused
92 xi.green_mask = 0x00000000; //Z only, unused 85 xi.green_mask = 0x00000000; //Z only, unused
93 xi.blue_mask = 0x00000000; //Z only, unused 86 xi.blue_mask = 0x00000000; //Z only, unused
… …
102 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); 95 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
103 96
104 xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); 97 xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line);
105 98
106 int rowstride = gdk_pixbuf_get_rowstride (pb); 99 int rowstride = gdk_pixbuf_get_rowstride (pb);
107 100 bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb);
108 assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb));
109 unsigned char *row = gdk_pixbuf_get_pixels (pb); 101 unsigned char *row = gdk_pixbuf_get_pixels (pb);
102
110 char *line = xi.data; 103 char *line = xi.data;
111 104
112 for (int y = 0; y < height; y++) 105 for (int y = 0; y < height; y++)
113 { 106 {
114 unsigned char *src = row; 107 unsigned char *src = row;
115 uint32_t *dst = (uint32_t *)line; 108 uint32_t *dst = (uint32_t *)line;
116 109
117 if (depth == 24) 110 if (!pb_has_alpha)
118 for (int x = 0; x < width; x++) 111 for (int x = 0; x < width; x++)
119 { 112 {
120 uint8_t r = *src++; 113 uint8_t r = *src++;
121 uint8_t g = *src++; 114 uint8_t g = *src++;
122 uint8_t b = *src++; 115 uint8_t b = *src++;
123 116
124 uint32_t v = (r << 16) | (g << 8) | b; 117 uint32_t v = (255 << 24) | (r << 16) | (g << 8) | b;
125 118
126 if (ecb_big_endian ()) 119 if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
127 v = ecb_bswap32 (v);
128
129 if (byte_order_mismatch)
130 v = ecb_bswap32 (v); 120 v = ecb_bswap32 (v);
131 121
132 *dst++ = v; 122 *dst++ = v;
133 } 123 }
134 else 124 else
135 for (int x = 0; x < width; x++) 125 for (int x = 0; x < width; x++)
136 { 126 {
137 uint32_t v = *(uint32_t *)src; src += 4; 127 uint32_t v = *(uint32_t *)src; src += 4;
138 128
139 if (ecb_little_endian ()) 129 if (ecb_big_endian ())
140 v = ecb_bswap32 (v); 130 v = ecb_bswap32 (v);
141 131
142 v = ecb_rotr32 (v, 8); 132 v = ecb_rotl32 (v, 8); // abgr to bgra
143 133
144 if (byte_order_mismatch) 134 if (!byte_order_mismatch)
145 v = ecb_bswap32 (v); 135 v = ecb_bswap32 (v);
146 136
147 *dst++ = v; 137 *dst++ = v;
148 } 138 }
149 139
150 row += rowstride; 140 row += rowstride;
151 line += xi.bytes_per_line; 141 line += xi.bytes_per_line;
152 } 142 }
153 143
154 rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height); 144 rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
155 img->alloc (); 145 img->alloc ();
156 146
157 GC gc = XCreateGC (dpy, img->pm, 0, 0); 147 GC gc = XCreateGC (dpy, img->pm, 0, 0);
158 XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); 148 XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
159 XFreeGC (dpy, gc); 149 XFreeGC (dpy, gc);
… …
176 166
177 g_object_unref (pb); 167 g_object_unref (pb);
178 168
179 return img; 169 return img;
180} 170}
171# endif
181 172
182void 173void
183rxvt_img::destroy () 174rxvt_img::destroy ()
184{ 175{
185 if (--ref->cnt) 176 if (--ref->cnt)
… …
219rxvt_img::unshare () 210rxvt_img::unshare ()
220{ 211{
221 if (ref->cnt == 1 && ref->ours) 212 if (ref->cnt == 1 && ref->ours)
222 return; 213 return;
223 214
224 //TODO: maybe should reify instead
225 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); 215 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
226 GC gc = XCreateGC (s->display->dpy, pm, 0, 0); 216 GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
227 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); 217 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
228 XFreeGC (s->display->dpy, gc); 218 XFreeGC (s->display->dpy, gc);
229 219
… …
275 double *kernel = (double *)malloc (size * sizeof (double)); 265 double *kernel = (double *)malloc (size * sizeof (double));
276 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); 266 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
277 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); 267 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
278 img->alloc (); 268 img->alloc ();
279 269
280 Picture src = src_picture ();
281
282 XRenderPictureAttributes pa; 270 XRenderPictureAttributes pa;
283 pa.repeat = RepeatPad; 271 pa.repeat = RepeatPad;
284 Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa); 272 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
273 Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
285 274
286 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); 275 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
287 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); 276 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
288 XFreePixmap (dpy, tmp_pm); 277 XFreePixmap (dpy, tmp_pm);
289 278
… …
305 294
306 size = rv * 2 + 1; 295 size = rv * 2 + 1;
307 get_gaussian_kernel (rv, size, kernel, params); 296 get_gaussian_kernel (rv, size, kernel, params);
308 ::swap (params[0], params[1]); 297 ::swap (params[0], params[1]);
309 298
310 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); 299 XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
311 XRenderComposite (dpy, 300 XRenderComposite (dpy,
312 PictOpSrc, 301 PictOpSrc,
313 tmp, 302 tmp,
314 None, 303 None,
315 dst, 304 dst,
… …
327 316
328 return img; 317 return img;
329} 318}
330 319
331static Picture 320static Picture
332create_xrender_mask (Display *dpy, Drawable drawable, Bool argb) 321create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha)
333{ 322{
334 Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); 323 Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
335 324
336 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); 325 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
337 XRenderPictureAttributes pa; 326 XRenderPictureAttributes pa;
338 pa.repeat = True; 327 pa.repeat = RepeatNormal;
328 pa.component_alpha = component_alpha;
339 Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa); 329 Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa);
340 330
341 XFreePixmap (dpy, pixmap); 331 XFreePixmap (dpy, pixmap);
342 332
343 return mask; 333 return mask;
344} 334}
345 335
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
346void 355void
347rxvt_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)
348{ 357{
358 unshare ();
359
349 Display *dpy = s->display->dpy; 360 Display *dpy = s->display->dpy;
350 Picture src = create_xrender_mask (dpy, pm, True);
351 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 361 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
352 362
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;
353 XRenderColor mask_c; 367 XRenderColor mask_c;
354 mask_c.red = r; 368
355 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))
356 mask_c.blue = b; 370 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
357 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, True);
413
414 //TODO: this operator does not yet implement some useful contrast
415 while (r | g | b | a)
416 {
417 unsigned short xr, xg, xb, xa;
418 XRenderColor mask_c;
419
420 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
421 {
358 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 422 XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1);
359
360 XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 423 XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h);
424 }
425 }
361 426
427 XRenderFreePicture (dpy, mul);
428 XRenderFreePicture (dpy, dst);
362 XRenderFreePicture (dpy, src); 429 XRenderFreePicture (dpy, src);
363 XRenderFreePicture (dpy, dst);
364}
365 430
366void 431 ::swap (img->ref, ref);
367rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a) 432 ::swap (img->pm , pm );
368{
369 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
370 return;
371 433
372 Display *dpy = s->display->dpy; 434 delete img;
373 Picture src = create_xrender_mask (dpy, pm, True);
374 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
375
376 XRenderColor mask_c;
377 mask_c.red = r;
378 mask_c.green = g;
379 mask_c.blue = b;
380 mask_c.alpha = a;
381 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
382
383 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
384
385 XRenderFreePicture (dpy, src);
386 XRenderFreePicture (dpy, dst);
387} 435}
388 436
389rxvt_img * 437rxvt_img *
390rxvt_img::clone () 438rxvt_img::clone ()
391{ 439{
… …
418 if (x == 0 && y == 0 && w == ref->w && h == ref->h) 466 if (x == 0 && y == 0 && w == ref->w && h == ref->h)
419 return clone (); 467 return clone ();
420 468
421 Display *dpy = s->display->dpy; 469 Display *dpy = s->display->dpy;
422 470
471 // add an alpha channel if...
423 bool alpha = !format->direct.alphaMask 472 bool alpha = !format->direct.alphaMask // pixmap has none yet
424 && (x || y) 473 && (x || y) // we need one because of non-zero offset
425 && repeat == RepeatNone; 474 && repeat == RepeatNone; // and we have no good pixels to fill with
426 475
427 rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); 476 rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
428 img->alloc (); 477 img->alloc ();
429 478
430 Picture src = src_picture (); 479 Picture src = src_picture ();
… …
480 529
481 for (int i = 0; i < 3; ++i) 530 for (int i = 0; i < 3; ++i)
482 for (int j = 0; j < 3; ++j) 531 for (int j = 0; j < 3; ++j)
483 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); 532 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
484 533
485#if 0
486 xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO 534 xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
487 xfrm.matrix [1][2] -= XDoubleToFixed (y); 535 xfrm.matrix [1][2] -= XDoubleToFixed (y);
488#endif
489 536
490 XRenderSetPictureFilter (dpy, src, "good", 0, 0); 537 XRenderSetPictureFilter (dpy, src, "good", 0, 0);
491 XRenderSetPictureTransform (dpy, src, &xfrm); 538 XRenderSetPictureTransform (dpy, src, &xfrm);
492 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); 539 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
493 540
… …
574{ 621{
575 rxvt_img *img2 = clone (); 622 rxvt_img *img2 = clone ();
576 Display *dpy = s->display->dpy; 623 Display *dpy = s->display->dpy;
577 Picture src = img->src_picture (); 624 Picture src = img->src_picture ();
578 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); 625 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
579 Picture mask = create_xrender_mask (dpy, img->pm, False); 626 Picture mask = create_xrender_mask (dpy, img->pm, False, False);
580 627
581 XRenderColor mask_c; 628 XRenderColor mask_c;
582 629
583 mask_c.alpha = float_to_component (factor); 630 mask_c.alpha = float_to_component (factor);
584 mask_c.red = 631 mask_c.red =

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