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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.12 by root, Mon Jun 4 15:28:49 2012 UTC vs.
Revision 1.69 by root, Sat Jun 9 11:15:29 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{
11}
12
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)
15{
16 ++ref->cnt;
17}
18
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))
36 return 0;
37
38 rxvt_img *img = new rxvt_img (
39 s,
40 XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
41 0,
42 0,
43 root_pm_w,
44 root_pm_h
45 );
46
47 img->pm = root_pixmap;
48 img->ref = new pixref (root_pm_w, root_pm_h);
49 img->ref->ours = false;
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;
18} 154}
19 155
20rxvt_img * 156rxvt_img *
21rxvt_img::new_from_file (rxvt_screen *s, const char *filename) 157rxvt_img::new_from_file (rxvt_screen *s, const char *filename)
22{ 158{
24 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); 160 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
25 161
26 if (!pb) 162 if (!pb)
27 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); 163 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
28 164
29 rxvt_img *img = new rxvt_img ( 165 rxvt_img *img = new_from_pixbuf (s, pb);
30 s,
31 XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
32 gdk_pixbuf_get_width (pb),
33 gdk_pixbuf_get_height (pb)
34 );
35 166
36 img->render (pb, 0, 0, img->w, img->h, 0, 0); 167 g_object_unref (pb);
37 168
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 ();
44 XFreePixmap (s->display->dpy, pm); 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;
45} 206}
46 207
47void 208void
48rxvt_img::unshare () 209rxvt_img::unshare ()
49{ 210{
50 if (!shared) 211 if (ref->cnt == 1 && ref->ours)
51 return; 212 return;
52 213
53 rxvt_img *img = clone (); 214 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
215 GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
216 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
217 XFreeGC (s->display->dpy, gc);
54 218
55 ::swap (pm , img->pm); 219 destroy ();
56 ::swap (shared, img->shared);
57 220
58 delete img; 221 pm = pm2;
222 ref = new pixref (ref->w, ref->h);
59} 223}
60 224
61void 225void
62rxvt_img::fill (const rxvt_color &c) 226rxvt_img::fill (const rxvt_color &c)
63{ 227{
87 251
88 for (int i = 0; i < width; i++) 252 for (int i = 0; i < width; i++)
89 params[i+2] = XDoubleToFixed (kernel[i] / sum); 253 params[i+2] = XDoubleToFixed (kernel[i] / sum);
90} 254}
91 255
92void 256rxvt_img *
93rxvt_img::blur (int rh, int rv) 257rxvt_img::blur (int rh, int rv)
94{ 258{
95 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) 259 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
96 return; 260 return clone ();
97 261
98 Display *dpy = s->display->dpy; 262 Display *dpy = s->display->dpy;
99 int size = max (rh, rv) * 2 + 1; 263 int size = max (rh, rv) * 2 + 1;
100 double *kernel = (double *)malloc (size * sizeof (double)); 264 double *kernel = (double *)malloc (size * sizeof (double));
101 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); 265 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
266 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
267 img->alloc ();
102 268
103 XRenderPictureAttributes pa; 269 XRenderPictureAttributes pa;
104
105 pa.repeat = RepeatPad; 270 pa.repeat = RepeatPad;
106 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); 271 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
272 Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
273
107 Pixmap tmp = XCreatePixmap (dpy, pm, w, h, format->depth); 274 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
108 Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa); 275 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
109 XFreePixmap (dpy, tmp); 276 XFreePixmap (dpy, tmp_pm);
110 277
111 if (kernel && params) 278 if (kernel && params)
112 { 279 {
113 size = rh * 2 + 1; 280 size = rh * 2 + 1;
114 get_gaussian_kernel (rh, size, kernel, params); 281 get_gaussian_kernel (rh, size, kernel, params);
115 282
116 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); 283 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
117 XRenderComposite (dpy, 284 XRenderComposite (dpy,
118 PictOpSrc, 285 PictOpSrc,
119 src, 286 src,
287 None,
288 tmp,
289 0, 0,
290 0, 0,
291 0, 0,
292 w, h);
293
294 size = rv * 2 + 1;
295 get_gaussian_kernel (rv, size, kernel, params);
296 ::swap (params[0], params[1]);
297
298 XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
299 XRenderComposite (dpy,
300 PictOpSrc,
301 tmp,
120 None, 302 None,
121 dst, 303 dst,
122 0, 0, 304 0, 0,
123 0, 0, 305 0, 0,
124 0, 0, 306 0, 0,
125 w, h); 307 w, h);
126
127 ::swap (src, dst);
128
129 size = rv * 2 + 1;
130 get_gaussian_kernel (rv, size, kernel, params);
131 ::swap (params[0], params[1]);
132
133 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
134 XRenderComposite (dpy,
135 PictOpSrc,
136 src,
137 None,
138 dst,
139 0, 0,
140 0, 0,
141 0, 0,
142 w, h);
143 } 308 }
144 309
145 free (kernel); 310 free (kernel);
146 free (params); 311 free (params);
147 XRenderFreePicture (dpy, src); 312 XRenderFreePicture (dpy, src);
148 XRenderFreePicture (dpy, dst); 313 XRenderFreePicture (dpy, dst);
314 XRenderFreePicture (dpy, tmp);
315
316 return img;
149} 317}
150 318
151static Picture 319static Picture
152create_xrender_mask (Display *dpy, Drawable drawable, Bool argb) 320create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
153{ 321{
161 XFreePixmap (dpy, pixmap); 329 XFreePixmap (dpy, pixmap);
162 330
163 return mask; 331 return mask;
164} 332}
165 333
334static void
335extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
336{
337 int32_t x = clamp (c, cl0, cl1);
338 c -= x;
339 xc = x;
340}
341
342static bool
343extract (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)
344{
345 extract (cl0, cl1, r, xr);
346 extract (cl0, cl1, g, xg);
347 extract (cl0, cl1, b, xb);
348 extract (cl0, cl1, a, xa);
349
350 return xr | xg | xb | xa;
351}
352
166void 353void
167rxvt_img::brightness (double r, double g, double b, double a) 354rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
168{ 355{
356 unshare ();
357
358 Display *dpy = s->display->dpy;
359 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
360
361 // loop should not be needed for brightness, as only -1..1 makes sense
362
363 while (r | g | b | a)
364 {
365 unsigned short xr, xg, xb, xa;
366 XRenderColor mask_c;
367
368 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
369 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
370
371 if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
372 {
373 XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
374 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
375 mask_c.red = -mask_c.red;
376 mask_c.green = -mask_c.green;
377 mask_c.blue = -mask_c.blue;
378 mask_c.alpha = -mask_c.alpha;
379 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
380 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
381 }
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 (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
392 {
393 rxvt_warn ("rxvt_img::contrast operation not supported on this display, RENDER extension too old.\n");
394 return;
395 }
396
397 unshare ();
398
169 Display *dpy = s->display->dpy; 399 Display *dpy = s->display->dpy;
170 Picture src = create_xrender_mask (dpy, pm, True); 400 Picture src = create_xrender_mask (dpy, pm, True);
171 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 401 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
172 402
173 XRenderColor mask_c; 403 XRenderColor mask_c;
174 mask_c.red = float_to_component (r); 404 mask_c.red = r;
175 mask_c.green = float_to_component (g); 405 mask_c.green = g;
176 mask_c.blue = float_to_component (b); 406 mask_c.blue = b;
177 mask_c.alpha = float_to_component (a); 407 mask_c.alpha = a;
178 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 408 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
179 409
180 XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
181}
182
183void
184rxvt_img::contrast (double r, double g, double b, double a)
185{
186 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
187 return;
188
189 Display *dpy = s->display->dpy;
190 Picture src = create_xrender_mask (dpy, pm, True);
191 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
192
193 XRenderColor mask_c;
194 mask_c.red = float_to_component (r);
195 mask_c.green = float_to_component (g);
196 mask_c.blue = float_to_component (b);
197 mask_c.alpha = float_to_component (a);
198 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
199
200 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 410 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
201}
202 411
203void 412 XRenderFreePicture (dpy, src);
204rxvt_img::render (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y) 413 XRenderFreePicture (dpy, dst);
205{
206 //TODO
207} 414}
208 415
209rxvt_img * 416rxvt_img *
210rxvt_img::clone () 417rxvt_img::clone ()
211{ 418{
212 GC gc = XCreateGC (s->display->dpy, pm, 0, 0); 419 return new rxvt_img (*this);
213 Pixmap pm2 = XCreatePixmap (s->display->dpy, pm, w, h, format->depth);
214 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0);
215 XFreeGC (s->display->dpy, gc);
216 return new rxvt_img (s, format, w, h, pm2);
217} 420}
218 421
422static XRenderPictFormat *
423find_alpha_format_for (Display *dpy, XRenderPictFormat *format)
424{
425 if (format->direct.alphaMask)
426 return format; // already has alpha
427
428 // try to find a suitable alpha format, one bit alpha is enough for our purposes
429 if (format->type == PictTypeDirect)
430 for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
431 if (f->direct.alphaMask
432 && f->type == PictTypeDirect
433 && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
434 && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
435 && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
436 return f;
437
438 // should be a very good fallback
439 return XRenderFindStandardFormat (dpy, PictStandardARGB32);
440}
441
219rxvt_img * 442rxvt_img *
443rxvt_img::reify ()
444{
445 if (x == 0 && y == 0 && w == ref->w && h == ref->h)
446 return clone ();
447
448 Display *dpy = s->display->dpy;
449
450 // add an alpha channel if...
451 bool alpha = !format->direct.alphaMask // pixmap has none yet
452 && (x || y) // we need one because of non-zero offset
453 && repeat == RepeatNone; // and we have no good pixels to fill with
454
455 rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
456 img->alloc ();
457
458 Picture src = src_picture ();
459 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
460
461 if (alpha)
462 {
463 XRenderColor rc = { 0, 0, 0, 0 };
464 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
465 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h);
466 }
467 else
468 XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);
469
470 XRenderFreePicture (dpy, src);
471 XRenderFreePicture (dpy, dst);
472
473 return img;
474}
475
476rxvt_img *
477rxvt_img::sub_rect (int x, int y, int width, int height)
478{
479 rxvt_img *img = clone ();
480
481 img->x += x;
482 img->y += y;
483
484 if (w != width || h != height)
485 {
486 img->w = width;
487 img->h = height;
488
489 rxvt_img *img2 = img->reify ();
490 delete img;
491 img = img2;
492 }
493
494 return img;
495}
496
497rxvt_img *
220rxvt_img::transform (int new_width, int new_height, int repeat, double matrix[9]) 498rxvt_img::transform (int new_width, int new_height, double matrix[9])
221{ 499{
222 rxvt_img *img = new rxvt_img (s, format, new_width, new_height); 500 rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat);
501 img->alloc ();
223 502
224 Display *dpy = s->display->dpy; 503 Display *dpy = s->display->dpy;
225 Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0); 504 Picture src = src_picture ();
226 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); 505 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
227 506
228 XTransform xfrm; 507 XTransform xfrm;
229 508
230 for (int i = 0; i < 3; ++i) 509 for (int i = 0; i < 3; ++i)
231 for (int j = 0; j < 3; ++j) 510 for (int j = 0; j < 3; ++j)
232 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); 511 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
233 512
513 xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
514 xfrm.matrix [1][2] -= XDoubleToFixed (y);
515
516 XRenderSetPictureFilter (dpy, src, "good", 0, 0);
234 XRenderSetPictureTransform (dpy, src, &xfrm); 517 XRenderSetPictureTransform (dpy, src, &xfrm);
235 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); 518 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
236 519
237 XRenderFreePicture (dpy, src); 520 XRenderFreePicture (dpy, src);
238 XRenderFreePicture (dpy, dst); 521 XRenderFreePicture (dpy, dst);
241} 524}
242 525
243rxvt_img * 526rxvt_img *
244rxvt_img::scale (int new_width, int new_height) 527rxvt_img::scale (int new_width, int new_height)
245{ 528{
529 if (w == new_width && h == new_height)
530 return clone ();
531
246 double matrix[9] = { 532 double matrix[9] = {
247 new_width / (double)w, 0, 0, 533 w / (double)new_width, 0, 0,
248 0, new_height / (double)h, 0, 534 0, h / (double)new_height, 0,
249 0, 0, 1 535 0, 0, 1
250 }; 536 };
251 537
538 int old_repeat_mode = repeat;
539 repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems
540
541 rxvt_img *img = transform (new_width, new_height, matrix);
542
543 repeat = old_repeat_mode;
544 img->repeat = repeat;
545
546 return img;
547}
548
549rxvt_img *
550rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
551{
552 double s = sin (phi);
553 double c = cos (phi);
554
555 double matrix[9] = {
556 c, -s, -c * x + s * y + x,
557 s, c, -s * x - c * y + y,
558 0, 0, 1
559 };
560
252 return transform (new_width, new_height, RepeatNormal, matrix); 561 return transform (new_width, new_height, matrix);
253} 562}
254 563
255rxvt_img * 564rxvt_img *
256rxvt_img::convert_to (XRenderPictFormat *new_format) 565rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg)
257{ 566{
567 if (new_format == format)
568 return clone ();
569
258 rxvt_img *img = new rxvt_img (s, new_format, w, h); 570 rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
571 img->alloc ();
259 572
260 Display *dpy = s->display->dpy; 573 Display *dpy = s->display->dpy;
261 Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0); 574 Picture src = src_picture ();
262 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); 575 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
576 int op = PictOpSrc;
263 577
578 if (format->direct.alphaMask && !new_format->direct.alphaMask)
579 {
580 // does it have to be that complicated
581 rgba c;
582 bg.get (c);
583
584 XRenderColor rc = { c.r, c.g, c.b, 0xffff };
585 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
586
587 op = PictOpOver;
588 }
589
264 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 590 XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
265 591
266 XRenderFreePicture (dpy, src); 592 XRenderFreePicture (dpy, src);
267 XRenderFreePicture (dpy, dst); 593 XRenderFreePicture (dpy, dst);
268 594
269 return img; 595 return img;
270} 596}
271 597
598rxvt_img *
599rxvt_img::blend (rxvt_img *img, double factor)
600{
601 rxvt_img *img2 = clone ();
602 Display *dpy = s->display->dpy;
603 Picture src = img->src_picture ();
604 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
605 Picture mask = create_xrender_mask (dpy, img->pm, False);
606
607 XRenderColor mask_c;
608
609 mask_c.alpha = float_to_component (factor);
610 mask_c.red =
611 mask_c.green =
612 mask_c.blue = 0;
613 XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
614
615 XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);
616
617 XRenderFreePicture (dpy, src);
618 XRenderFreePicture (dpy, dst);
619 XRenderFreePicture (dpy, mask);
620
621 return img2;
622}
623
272#endif 624#endif
273 625

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