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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.9 by root, Sun Jun 3 20:47:00 2012 UTC vs.
Revision 1.60 by sf-exg, Fri Jun 8 10:12:45 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
7#define float_to_component(d) ((d) * 65535.99)
8
9rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height) 7rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat)
10: s(screen), w(width), h(height), format(format), shared(false)
11{
12 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
13}
14
15rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap)
16: s(screen), pm(pixmap), w(width), h(height), format(format), shared(false) 8: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
9 pm(0), ref(0)
17{ 10{
18} 11}
19 12
20rxvt_img * 13rxvt_img::rxvt_img (const rxvt_img &img)
21rxvt_img::new_from_file (rxvt_screen *s, const char *filename) 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)
22{ 15{
23 GError *err; 16 ++ref->cnt;
24 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); 17}
25 18
26 if (!pb) 19rxvt_img *
20rxvt_img::new_from_root (rxvt_screen *s)
21{
22 Display *dpy = s->display->dpy;
23 unsigned int root_pm_w, root_pm_h;
24 Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]);
25 if (root_pixmap == None)
26 root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]);
27
28 if (root_pixmap == None)
29 return 0;
30
31 Window wdummy;
32 int idummy;
33 unsigned int udummy;
34
35 if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy))
27 return 0; 36 return 0;
28 37
29 rxvt_img *img = new rxvt_img ( 38 rxvt_img *img = new rxvt_img (
30 s, 39 s,
31 XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24), 40 XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
32 gdk_pixbuf_get_width (pb), 41 0,
33 gdk_pixbuf_get_height (pb) 42 0,
43 root_pm_w,
44 root_pm_h
34 ); 45 );
35 46
36 img->render (pb, 0, 0, img->w, img->h, 0, 0); 47 img->pm = root_pixmap;
48 img->ref = new pixref (root_pm_w, root_pm_h);
49 img->ref->ours = false;
37 50
51 return img;
52}
53
54rxvt_img *
55rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb)
56{
57 Display *dpy = s->display->dpy;
58
59 int width = gdk_pixbuf_get_width (pb);
60 int height = gdk_pixbuf_get_height (pb);
61
62 if (width > 32767 || height > 32767) // well, we *could* upload in chunks
63 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
64
65 // since we require rgb24/argb32 formats from xrender we assume
66 // that both 24 and 32 bpp MUST be supported by any screen that supports xrender
67 int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24;
68
69 int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
70
71 XImage xi;
72
73 xi.width = width;
74 xi.height = height;
75 xi.xoffset = 0;
76 xi.format = ZPixmap;
77 xi.byte_order = ImageByteOrder (dpy);
78 xi.bitmap_unit = 0; //XY only, unused
79 xi.bitmap_bit_order = 0; //XY only, unused
80 xi.bitmap_pad = BitmapPad (dpy);
81 xi.depth = depth;
82 xi.bytes_per_line = 0;
83 xi.bits_per_pixel = 32; //Z only
84 xi.red_mask = 0x00000000; //Z only, unused
85 xi.green_mask = 0x00000000; //Z only, unused
86 xi.blue_mask = 0x00000000; //Z only, unused
87 xi.obdata = 0; // probably unused
88
89 bool byte_order_mismatch = byte_order != xi.byte_order;
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 *src = row;
108 uint32_t *dst = (uint32_t *)line;
109
110 if (depth == 24)
111 for (int x = 0; x < width; x++)
112 {
113 uint8_t r = *src++;
114 uint8_t g = *src++;
115 uint8_t b = *src++;
116
117 uint32_t v = (r << 16) | (g << 8) | b;
118
119 if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
120 v = ecb_bswap32 (v);
121
122 *dst++ = v;
123 }
124 else
125 for (int x = 0; x < width; x++)
126 {
127 uint32_t v = *(uint32_t *)src; src += 4;
128
129 if (ecb_big_endian ())
130 v = ecb_bswap32 (v);
131
132 v = ecb_rotl32 (v, 8); // abgr to bgra
133
134 if (!byte_order_mismatch)
135 v = ecb_bswap32 (v);
136
137 *dst++ = v;
138 }
139
140 row += rowstride;
141 line += xi.bytes_per_line;
142 }
143
144 rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height);
145 img->alloc ();
146
147 GC gc = XCreateGC (dpy, img->pm, 0, 0);
148 XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
149 XFreeGC (dpy, gc);
150
151 free (xi.data);
152
153 return img;
154}
155
156rxvt_img *
157rxvt_img::new_from_file (rxvt_screen *s, const char *filename)
158{
159 GError *err = 0;
160 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
161
162 if (!pb)
163 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
164
165 rxvt_img *img = new_from_pixbuf (s, pb);
166
167 g_object_unref (pb);
168
169 return img;
170}
171
172void
173rxvt_img::destroy ()
174{
175 if (--ref->cnt)
38 return img; 176 return;
177
178 if (pm && ref->ours)
179 XFreePixmap (s->display->dpy, pm);
180
181 delete ref;
39} 182}
40 183
41rxvt_img::~rxvt_img () 184rxvt_img::~rxvt_img ()
42{ 185{
43 if (!shared) 186 destroy ();
187}
188
189void
190rxvt_img::alloc ()
191{
192 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
193 ref = new pixref (w, h);
194}
195
196Picture
197rxvt_img::src_picture ()
198{
199 Display *dpy = s->display->dpy;
200
201 XRenderPictureAttributes pa;
202 pa.repeat = repeat;
203 Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
204
205 return pic;
206}
207
208void
209rxvt_img::unshare ()
210{
211 if (ref->cnt == 1 && ref->ours)
212 return;
213
214 //TODO: maybe should reify instead
215 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 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
44 XFreePixmap (s->display->dpy, pm); 218 XFreeGC (s->display->dpy, gc);
219
220 destroy ();
221
222 pm = pm2;
223 ref = new pixref (ref->w, ref->h);
45} 224}
46 225
47void 226void
48rxvt_img::fill (const rxvt_color &c) 227rxvt_img::fill (const rxvt_color &c)
49{ 228{
73 252
74 for (int i = 0; i < width; i++) 253 for (int i = 0; i < width; i++)
75 params[i+2] = XDoubleToFixed (kernel[i] / sum); 254 params[i+2] = XDoubleToFixed (kernel[i] / sum);
76} 255}
77 256
78void 257rxvt_img *
79rxvt_img::blur (int rh, int rv) 258rxvt_img::blur (int rh, int rv)
80{ 259{
81 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) 260 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
82 return; 261 return clone ();
83 262
84 Display *dpy = s->display->dpy; 263 Display *dpy = s->display->dpy;
85 int size = max (rh, rv) * 2 + 1; 264 int size = max (rh, rv) * 2 + 1;
86 double *kernel = (double *)malloc (size * sizeof (double)); 265 double *kernel = (double *)malloc (size * sizeof (double));
87 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); 266 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
267 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
268 img->alloc ();
269
270 Picture src = src_picture ();
88 271
89 XRenderPictureAttributes pa; 272 XRenderPictureAttributes pa;
90
91 pa.repeat = RepeatPad; 273 pa.repeat = RepeatPad;
92 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); 274 Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);
275
93 Pixmap tmp = XCreatePixmap (dpy, pm, w, h, format->depth); 276 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
94 Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa); 277 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
95 XFreePixmap (dpy, tmp); 278 XFreePixmap (dpy, tmp_pm);
96 279
97 if (kernel && params) 280 if (kernel && params)
98 { 281 {
99 size = rh * 2 + 1; 282 size = rh * 2 + 1;
100 get_gaussian_kernel (rh, size, kernel, params); 283 get_gaussian_kernel (rh, size, kernel, params);
102 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); 285 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
103 XRenderComposite (dpy, 286 XRenderComposite (dpy,
104 PictOpSrc, 287 PictOpSrc,
105 src, 288 src,
106 None, 289 None,
107 dst, 290 tmp,
108 0, 0, 291 0, 0,
109 0, 0, 292 0, 0,
110 0, 0, 293 0, 0,
111 w, h); 294 w, h);
112 295
113 ::swap (src, dst);
114
115 size = rv * 2 + 1; 296 size = rv * 2 + 1;
116 get_gaussian_kernel (rv, size, kernel, params); 297 get_gaussian_kernel (rv, size, kernel, params);
117 ::swap (params[0], params[1]); 298 ::swap (params[0], params[1]);
118 299
119 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); 300 XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
120 XRenderComposite (dpy, 301 XRenderComposite (dpy,
121 PictOpSrc, 302 PictOpSrc,
122 src, 303 tmp,
123 None, 304 None,
124 dst, 305 dst,
125 0, 0, 306 0, 0,
126 0, 0, 307 0, 0,
127 0, 0, 308 0, 0,
130 311
131 free (kernel); 312 free (kernel);
132 free (params); 313 free (params);
133 XRenderFreePicture (dpy, src); 314 XRenderFreePicture (dpy, src);
134 XRenderFreePicture (dpy, dst); 315 XRenderFreePicture (dpy, dst);
316 XRenderFreePicture (dpy, tmp);
317
318 return img;
135} 319}
136 320
137static Picture 321static Picture
138create_xrender_mask (Display *dpy, Drawable drawable, Bool argb) 322create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
139{ 323{
148 332
149 return mask; 333 return mask;
150} 334}
151 335
152void 336void
153rxvt_img::brightness (double r, double g, double b, double a) 337rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
154{ 338{
155 Display *dpy = s->display->dpy; 339 Display *dpy = s->display->dpy;
156 Picture src = create_xrender_mask (dpy, pm, True); 340 Picture src = create_xrender_mask (dpy, pm, True);
157 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 341 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
158 342
159 XRenderColor mask_c; 343 XRenderColor mask_c;
160 mask_c.red = float_to_component (r); 344 mask_c.red = r;
161 mask_c.green = float_to_component (g); 345 mask_c.green = g;
162 mask_c.blue = float_to_component (b); 346 mask_c.blue = b;
163 mask_c.alpha = float_to_component (a); 347 mask_c.alpha = a;
164 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 348 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
165 349
166 XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 350 XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
351
352 XRenderFreePicture (dpy, src);
353 XRenderFreePicture (dpy, dst);
167} 354}
168 355
169void 356void
170rxvt_img::contrast (double r, double g, double b, double a) 357rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
171{ 358{
172 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL)) 359 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
173 return; 360 return;
174 361
175 Display *dpy = s->display->dpy; 362 Display *dpy = s->display->dpy;
176 Picture src = create_xrender_mask (dpy, pm, True); 363 Picture src = create_xrender_mask (dpy, pm, True);
177 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 364 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
178 365
179 XRenderColor mask_c; 366 XRenderColor mask_c;
180 mask_c.red = float_to_component (r); 367 mask_c.red = r;
181 mask_c.green = float_to_component (g); 368 mask_c.green = g;
182 mask_c.blue = float_to_component (b); 369 mask_c.blue = b;
183 mask_c.alpha = float_to_component (a); 370 mask_c.alpha = a;
184 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 371 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
185 372
186 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 373 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
187}
188 374
189void 375 XRenderFreePicture (dpy, src);
190rxvt_img::render (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y) 376 XRenderFreePicture (dpy, dst);
191{
192 //TODO
193} 377}
194 378
195rxvt_img * 379rxvt_img *
196rxvt_img::copy () 380rxvt_img::clone ()
197{ 381{
198 GC gc = XCreateGC (s->display->dpy, pm, 0, 0); 382 return new rxvt_img (*this);
199 Pixmap pm2 = XCreatePixmap (s->display->dpy, pm, w, h, format->depth);
200 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0);
201 XFreeGC (s->display->dpy, gc);
202 return new rxvt_img (s, format, w, h, pm2);
203} 383}
204 384
385static XRenderPictFormat *
386find_alpha_format_for (Display *dpy, XRenderPictFormat *format)
387{
388 if (format->direct.alphaMask)
389 return format; // already has alpha
390
391 // try to find a suitable alpha format, one bit alpha is enough for our purposes
392 if (format->type == PictTypeDirect)
393 for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
394 if (f->direct.alphaMask
395 && f->type == PictTypeDirect
396 && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
397 && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
398 && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
399 return f;
400
401 // should be a very good fallback
402 return XRenderFindStandardFormat (dpy, PictStandardARGB32);
403}
404
205rxvt_img * 405rxvt_img *
406rxvt_img::reify ()
407{
408 if (x == 0 && y == 0 && w == ref->w && h == ref->h)
409 return clone ();
410
411 Display *dpy = s->display->dpy;
412
413 bool alpha = !format->direct.alphaMask
414 && (x || y)
415 && repeat == RepeatNone;
416
417 rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
418 img->alloc ();
419
420 Picture src = src_picture ();
421 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
422
423 if (alpha)
424 {
425 XRenderColor rc = { 0, 0, 0, 0 };
426 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
427 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h);
428 }
429 else
430 XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);
431
432 XRenderFreePicture (dpy, src);
433 XRenderFreePicture (dpy, dst);
434
435 return img;
436}
437
438rxvt_img *
439rxvt_img::sub_rect (int x, int y, int width, int height)
440{
441 rxvt_img *img = clone ();
442
443 img->x += x;
444 img->y += y;
445
446 if (w != width || h != height)
447 {
448 img->w = width;
449 img->h = height;
450
451 rxvt_img *img2 = img->reify ();
452 delete img;
453 img = img2;
454 }
455
456 return img;
457}
458
459rxvt_img *
206rxvt_img::transform (int new_width, int new_height, double matrix[16]) 460rxvt_img::transform (int new_width, int new_height, double matrix[9])
207{ 461{
208 //TODO 462 rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat);
463 img->alloc ();
464
465 Display *dpy = s->display->dpy;
466 Picture src = src_picture ();
467 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
468
469 XTransform xfrm;
470
471 for (int i = 0; i < 3; ++i)
472 for (int j = 0; j < 3; ++j)
473 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
474
475#if 0
476 xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
477 xfrm.matrix [1][2] -= XDoubleToFixed (y);
478#endif
479
480 XRenderSetPictureFilter (dpy, src, "good", 0, 0);
481 XRenderSetPictureTransform (dpy, src, &xfrm);
482 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
483
484 XRenderFreePicture (dpy, src);
485 XRenderFreePicture (dpy, dst);
486
487 return img;
209} 488}
210 489
211rxvt_img * 490rxvt_img *
212rxvt_img::scale (int new_width, int new_height) 491rxvt_img::scale (int new_width, int new_height)
213{ 492{
214 // use transform 493 if (w == new_width && h == new_height)
215 //TODO 494 return clone ();
216}
217 495
496 double matrix[9] = {
497 w / (double)new_width, 0, 0,
498 0, h / (double)new_height, 0,
499 0, 0, 1
500 };
501
502 int old_repeat_mode = repeat;
503 repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems
504
505 rxvt_img *img = transform (new_width, new_height, matrix);
506
507 repeat = old_repeat_mode;
508 img->repeat = repeat;
509
510 return img;
511}
512
218rxvt_img * 513rxvt_img *
514rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
515{
516 double s = sin (phi);
517 double c = cos (phi);
518
519 double matrix[9] = {
520 c, -s, -c * x + s * y + x,
521 s, c, -s * x - c * y + y,
522 0, 0, 1
523 };
524
525 return transform (new_width, new_height, matrix);
526}
527
528rxvt_img *
219rxvt_img::convert_to (XRenderPictFormat *new_format) 529rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg)
220{ 530{
531 if (new_format == format)
532 return clone ();
533
221 rxvt_img *img = new rxvt_img (s,new_format,w, h); 534 rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
535 img->alloc ();
222 536
223 Display *dpy = s->display->dpy; 537 Display *dpy = s->display->dpy;
224 Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0); 538 Picture src = src_picture ();
225 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); 539 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
540 int op = PictOpSrc;
226 541
542 if (format->direct.alphaMask && !new_format->direct.alphaMask)
543 {
544 // does it have to be that complicated
545 rgba c;
546 bg.get (c);
547
548 XRenderColor rc = { c.r, c.g, c.b, 0xffff };
549 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
550
551 op = PictOpOver;
552 }
553
227 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 554 XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
228 555
229 XRenderFreePicture (dpy, src);
230 XRenderFreePicture (dpy, dst); 556 XRenderFreePicture (dpy, src);
557 XRenderFreePicture (dpy, dst);
231 558
559 return img;
560}
561
562rxvt_img *
563rxvt_img::blend (rxvt_img *img, double factor)
564{
565 rxvt_img *img2 = clone ();
566 Display *dpy = s->display->dpy;
567 Picture src = img->src_picture ();
568 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
569 Picture mask = create_xrender_mask (dpy, img->pm, False);
570
571 XRenderColor mask_c;
572
573 mask_c.alpha = float_to_component (factor);
574 mask_c.red =
575 mask_c.green =
576 mask_c.blue = 0;
577 XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
578
579 XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);
580
581 XRenderFreePicture (dpy, src);
582 XRenderFreePicture (dpy, dst);
583 XRenderFreePicture (dpy, mask);
584
232 return img; 585 return img2;
233} 586}
234 587
235#endif 588#endif
236 589

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