1 |
#include <math.h> |
2 |
#include "../config.h" |
3 |
#include "rxvt.h" |
4 |
|
5 |
#if HAVE_IMG |
6 |
|
7 |
rxvt_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(repeat), |
9 |
pm(0), ref(0) |
10 |
{ |
11 |
} |
12 |
|
13 |
rxvt_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 |
|
19 |
rxvt_img * |
20 |
rxvt_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 |
|
54 |
# if HAVE_PIXBUF |
55 |
rxvt_img * |
56 |
rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
57 |
{ |
58 |
Display *dpy = s->display->dpy; |
59 |
|
60 |
int width = gdk_pixbuf_get_width (pb); |
61 |
int height = gdk_pixbuf_get_height (pb); |
62 |
|
63 |
if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
64 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
65 |
|
66 |
// since we require rgb24/argb32 formats from xrender we assume |
67 |
// that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
68 |
int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24; |
69 |
|
70 |
int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
71 |
|
72 |
XImage xi; |
73 |
|
74 |
xi.width = width; |
75 |
xi.height = height; |
76 |
xi.xoffset = 0; |
77 |
xi.format = ZPixmap; |
78 |
xi.byte_order = ImageByteOrder (dpy); |
79 |
xi.bitmap_unit = 0; //XY only, unused |
80 |
xi.bitmap_bit_order = 0; //XY only, unused |
81 |
xi.bitmap_pad = BitmapPad (dpy); |
82 |
xi.depth = depth; |
83 |
xi.bytes_per_line = 0; |
84 |
xi.bits_per_pixel = 32; //Z only |
85 |
xi.red_mask = 0x00000000; //Z only, unused |
86 |
xi.green_mask = 0x00000000; //Z only, unused |
87 |
xi.blue_mask = 0x00000000; //Z only, unused |
88 |
xi.obdata = 0; // probably unused |
89 |
|
90 |
bool byte_order_mismatch = byte_order != xi.byte_order; |
91 |
|
92 |
if (!XInitImage (&xi)) |
93 |
rxvt_fatal ("unable to initialise ximage, please report.\n"); |
94 |
|
95 |
if (height > INT_MAX / xi.bytes_per_line) |
96 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); |
97 |
|
98 |
xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); |
99 |
|
100 |
int rowstride = gdk_pixbuf_get_rowstride (pb); |
101 |
|
102 |
assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb)); |
103 |
unsigned char *row = gdk_pixbuf_get_pixels (pb); |
104 |
char *line = xi.data; |
105 |
|
106 |
for (int y = 0; y < height; y++) |
107 |
{ |
108 |
unsigned char *src = row; |
109 |
uint32_t *dst = (uint32_t *)line; |
110 |
|
111 |
if (depth == 24) |
112 |
for (int x = 0; x < width; x++) |
113 |
{ |
114 |
uint8_t r = *src++; |
115 |
uint8_t g = *src++; |
116 |
uint8_t b = *src++; |
117 |
|
118 |
uint32_t v = (r << 16) | (g << 8) | b; |
119 |
|
120 |
if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) |
121 |
v = ecb_bswap32 (v); |
122 |
|
123 |
*dst++ = v; |
124 |
} |
125 |
else |
126 |
for (int x = 0; x < width; x++) |
127 |
{ |
128 |
uint32_t v = *(uint32_t *)src; src += 4; |
129 |
|
130 |
if (ecb_big_endian ()) |
131 |
v = ecb_bswap32 (v); |
132 |
|
133 |
v = ecb_rotl32 (v, 8); // abgr to bgra |
134 |
|
135 |
if (!byte_order_mismatch) |
136 |
v = ecb_bswap32 (v); |
137 |
|
138 |
*dst++ = v; |
139 |
} |
140 |
|
141 |
row += rowstride; |
142 |
line += xi.bytes_per_line; |
143 |
} |
144 |
|
145 |
rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height); |
146 |
img->alloc (); |
147 |
|
148 |
GC gc = XCreateGC (dpy, img->pm, 0, 0); |
149 |
XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); |
150 |
XFreeGC (dpy, gc); |
151 |
|
152 |
free (xi.data); |
153 |
|
154 |
return img; |
155 |
} |
156 |
|
157 |
rxvt_img * |
158 |
rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
159 |
{ |
160 |
GError *err = 0; |
161 |
GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
162 |
|
163 |
if (!pb) |
164 |
rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
165 |
|
166 |
rxvt_img *img = new_from_pixbuf (s, pb); |
167 |
|
168 |
g_object_unref (pb); |
169 |
|
170 |
return img; |
171 |
} |
172 |
# endif |
173 |
|
174 |
void |
175 |
rxvt_img::destroy () |
176 |
{ |
177 |
if (--ref->cnt) |
178 |
return; |
179 |
|
180 |
if (pm && ref->ours) |
181 |
XFreePixmap (s->display->dpy, pm); |
182 |
|
183 |
delete ref; |
184 |
} |
185 |
|
186 |
rxvt_img::~rxvt_img () |
187 |
{ |
188 |
destroy (); |
189 |
} |
190 |
|
191 |
void |
192 |
rxvt_img::alloc () |
193 |
{ |
194 |
pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
195 |
ref = new pixref (w, h); |
196 |
} |
197 |
|
198 |
Picture |
199 |
rxvt_img::src_picture () |
200 |
{ |
201 |
Display *dpy = s->display->dpy; |
202 |
|
203 |
XRenderPictureAttributes pa; |
204 |
pa.repeat = repeat; |
205 |
Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
206 |
|
207 |
return pic; |
208 |
} |
209 |
|
210 |
void |
211 |
rxvt_img::unshare () |
212 |
{ |
213 |
if (ref->cnt == 1 && ref->ours) |
214 |
return; |
215 |
|
216 |
Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); |
217 |
GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
218 |
XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); |
219 |
XFreeGC (s->display->dpy, gc); |
220 |
|
221 |
destroy (); |
222 |
|
223 |
pm = pm2; |
224 |
ref = new pixref (ref->w, ref->h); |
225 |
} |
226 |
|
227 |
void |
228 |
rxvt_img::fill (const rxvt_color &c) |
229 |
{ |
230 |
XGCValues gcv; |
231 |
gcv.foreground = c; |
232 |
GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); |
233 |
XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); |
234 |
XFreeGC (s->display->dpy, gc); |
235 |
} |
236 |
|
237 |
static void |
238 |
get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) |
239 |
{ |
240 |
double sigma = radius / 2.0; |
241 |
double scale = sqrt (2.0 * M_PI) * sigma; |
242 |
double sum = 0.0; |
243 |
|
244 |
for (int i = 0; i < width; i++) |
245 |
{ |
246 |
double x = i - width / 2; |
247 |
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
248 |
sum += kernel[i]; |
249 |
} |
250 |
|
251 |
params[0] = XDoubleToFixed (width); |
252 |
params[1] = XDoubleToFixed (1); |
253 |
|
254 |
for (int i = 0; i < width; i++) |
255 |
params[i+2] = XDoubleToFixed (kernel[i] / sum); |
256 |
} |
257 |
|
258 |
rxvt_img * |
259 |
rxvt_img::blur (int rh, int rv) |
260 |
{ |
261 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
262 |
return clone (); |
263 |
|
264 |
Display *dpy = s->display->dpy; |
265 |
int size = max (rh, rv) * 2 + 1; |
266 |
double *kernel = (double *)malloc (size * sizeof (double)); |
267 |
XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
268 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
269 |
img->alloc (); |
270 |
|
271 |
XRenderPictureAttributes pa; |
272 |
pa.repeat = RepeatPad; |
273 |
Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
274 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
275 |
|
276 |
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
277 |
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
278 |
XFreePixmap (dpy, tmp_pm); |
279 |
|
280 |
if (kernel && params) |
281 |
{ |
282 |
size = rh * 2 + 1; |
283 |
get_gaussian_kernel (rh, size, kernel, params); |
284 |
|
285 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
286 |
XRenderComposite (dpy, |
287 |
PictOpSrc, |
288 |
src, |
289 |
None, |
290 |
tmp, |
291 |
0, 0, |
292 |
0, 0, |
293 |
0, 0, |
294 |
w, h); |
295 |
|
296 |
size = rv * 2 + 1; |
297 |
get_gaussian_kernel (rv, size, kernel, params); |
298 |
::swap (params[0], params[1]); |
299 |
|
300 |
XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2); |
301 |
XRenderComposite (dpy, |
302 |
PictOpSrc, |
303 |
tmp, |
304 |
None, |
305 |
dst, |
306 |
0, 0, |
307 |
0, 0, |
308 |
0, 0, |
309 |
w, h); |
310 |
} |
311 |
|
312 |
free (kernel); |
313 |
free (params); |
314 |
XRenderFreePicture (dpy, src); |
315 |
XRenderFreePicture (dpy, dst); |
316 |
XRenderFreePicture (dpy, tmp); |
317 |
|
318 |
return img; |
319 |
} |
320 |
|
321 |
static Picture |
322 |
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha) |
323 |
{ |
324 |
Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
325 |
|
326 |
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
327 |
XRenderPictureAttributes pa; |
328 |
pa.repeat = RepeatNormal; |
329 |
pa.component_alpha = component_alpha; |
330 |
Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); |
331 |
|
332 |
XFreePixmap (dpy, pixmap); |
333 |
|
334 |
return mask; |
335 |
} |
336 |
|
337 |
static void |
338 |
extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc) |
339 |
{ |
340 |
int32_t x = clamp (c, cl0, cl1); |
341 |
c -= x; |
342 |
xc = x; |
343 |
} |
344 |
|
345 |
static bool |
346 |
extract (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) |
347 |
{ |
348 |
extract (cl0, cl1, r, xr); |
349 |
extract (cl0, cl1, g, xg); |
350 |
extract (cl0, cl1, b, xb); |
351 |
extract (cl0, cl1, a, xa); |
352 |
|
353 |
return xr | xg | xb | xa; |
354 |
} |
355 |
|
356 |
void |
357 |
rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) |
358 |
{ |
359 |
unshare (); |
360 |
|
361 |
Display *dpy = s->display->dpy; |
362 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
363 |
|
364 |
// loop should not be needed for brightness, as only -1..1 makes sense |
365 |
//while (r | g | b | a) |
366 |
{ |
367 |
unsigned short xr, xg, xb, xa; |
368 |
XRenderColor mask_c; |
369 |
|
370 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
371 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
372 |
|
373 |
if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
374 |
{ |
375 |
XRenderColor mask_w = { 65535, 65535, 65535, 65535 }; |
376 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
377 |
mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing |
378 |
mask_c.green = -mask_c.green; |
379 |
mask_c.blue = -mask_c.blue; |
380 |
mask_c.alpha = -mask_c.alpha; |
381 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
382 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
383 |
} |
384 |
} |
385 |
|
386 |
XRenderFreePicture (dpy, dst); |
387 |
} |
388 |
|
389 |
void |
390 |
rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a) |
391 |
{ |
392 |
if (r < 0 || g < 0 || b < 0 || a < 0) |
393 |
rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); |
394 |
|
395 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
396 |
img->alloc (); |
397 |
|
398 |
{ |
399 |
rxvt_color empty; |
400 |
empty.set (s, rgba (0, 0, 0, 0)); |
401 |
img->fill (empty); |
402 |
} |
403 |
|
404 |
// premultiply (yeah, these are not exact, sue me or fix it) |
405 |
r = (r * (a >> 8)) >> 8; |
406 |
g = (g * (a >> 8)) >> 8; |
407 |
b = (b * (a >> 8)) >> 8; |
408 |
|
409 |
Display *dpy = s->display->dpy; |
410 |
|
411 |
Picture src = src_picture (); |
412 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
413 |
Picture mul = create_xrender_mask (dpy, pm, True, True); |
414 |
|
415 |
//TODO: this operator does not yet implement some useful contrast |
416 |
while (r | g | b | a) |
417 |
{ |
418 |
unsigned short xr, xg, xb, xa; |
419 |
XRenderColor mask_c; |
420 |
|
421 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
422 |
{ |
423 |
XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1); |
424 |
XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h); |
425 |
} |
426 |
} |
427 |
|
428 |
XRenderFreePicture (dpy, mul); |
429 |
XRenderFreePicture (dpy, dst); |
430 |
XRenderFreePicture (dpy, src); |
431 |
|
432 |
::swap (img->ref, ref); |
433 |
::swap (img->pm , pm ); |
434 |
|
435 |
delete img; |
436 |
} |
437 |
|
438 |
rxvt_img * |
439 |
rxvt_img::clone () |
440 |
{ |
441 |
return new rxvt_img (*this); |
442 |
} |
443 |
|
444 |
static XRenderPictFormat * |
445 |
find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
446 |
{ |
447 |
if (format->direct.alphaMask) |
448 |
return format; // already has alpha |
449 |
|
450 |
// try to find a suitable alpha format, one bit alpha is enough for our purposes |
451 |
if (format->type == PictTypeDirect) |
452 |
for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
453 |
if (f->direct.alphaMask |
454 |
&& f->type == PictTypeDirect |
455 |
&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
456 |
&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
457 |
&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
458 |
return f; |
459 |
|
460 |
// should be a very good fallback |
461 |
return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
462 |
} |
463 |
|
464 |
rxvt_img * |
465 |
rxvt_img::reify () |
466 |
{ |
467 |
if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
468 |
return clone (); |
469 |
|
470 |
Display *dpy = s->display->dpy; |
471 |
|
472 |
// add an alpha channel if... |
473 |
bool alpha = !format->direct.alphaMask // pixmap has none yet |
474 |
&& (x || y) // we need one because of non-zero offset |
475 |
&& repeat == RepeatNone; // and we have no good pixels to fill with |
476 |
|
477 |
rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
478 |
img->alloc (); |
479 |
|
480 |
Picture src = src_picture (); |
481 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
482 |
|
483 |
if (alpha) |
484 |
{ |
485 |
XRenderColor rc = { 0, 0, 0, 0 }; |
486 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
487 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h); |
488 |
} |
489 |
else |
490 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); |
491 |
|
492 |
XRenderFreePicture (dpy, src); |
493 |
XRenderFreePicture (dpy, dst); |
494 |
|
495 |
return img; |
496 |
} |
497 |
|
498 |
rxvt_img * |
499 |
rxvt_img::sub_rect (int x, int y, int width, int height) |
500 |
{ |
501 |
rxvt_img *img = clone (); |
502 |
|
503 |
img->x += x; |
504 |
img->y += y; |
505 |
|
506 |
if (w != width || h != height) |
507 |
{ |
508 |
img->w = width; |
509 |
img->h = height; |
510 |
|
511 |
rxvt_img *img2 = img->reify (); |
512 |
delete img; |
513 |
img = img2; |
514 |
} |
515 |
|
516 |
return img; |
517 |
} |
518 |
|
519 |
rxvt_img * |
520 |
rxvt_img::transform (int new_width, int new_height, double matrix[9]) |
521 |
{ |
522 |
rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat); |
523 |
img->alloc (); |
524 |
|
525 |
Display *dpy = s->display->dpy; |
526 |
Picture src = src_picture (); |
527 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
528 |
|
529 |
XTransform xfrm; |
530 |
|
531 |
for (int i = 0; i < 3; ++i) |
532 |
for (int j = 0; j < 3; ++j) |
533 |
xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); |
534 |
|
535 |
xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO |
536 |
xfrm.matrix [1][2] -= XDoubleToFixed (y); |
537 |
|
538 |
XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
539 |
XRenderSetPictureTransform (dpy, src, &xfrm); |
540 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); |
541 |
|
542 |
XRenderFreePicture (dpy, src); |
543 |
XRenderFreePicture (dpy, dst); |
544 |
|
545 |
return img; |
546 |
} |
547 |
|
548 |
rxvt_img * |
549 |
rxvt_img::scale (int new_width, int new_height) |
550 |
{ |
551 |
if (w == new_width && h == new_height) |
552 |
return clone (); |
553 |
|
554 |
double matrix[9] = { |
555 |
w / (double)new_width, 0, 0, |
556 |
0, h / (double)new_height, 0, |
557 |
0, 0, 1 |
558 |
}; |
559 |
|
560 |
int old_repeat_mode = repeat; |
561 |
repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems |
562 |
|
563 |
rxvt_img *img = transform (new_width, new_height, matrix); |
564 |
|
565 |
repeat = old_repeat_mode; |
566 |
img->repeat = repeat; |
567 |
|
568 |
return img; |
569 |
} |
570 |
|
571 |
rxvt_img * |
572 |
rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi) |
573 |
{ |
574 |
double s = sin (phi); |
575 |
double c = cos (phi); |
576 |
|
577 |
double matrix[9] = { |
578 |
c, -s, -c * x + s * y + x, |
579 |
s, c, -s * x - c * y + y, |
580 |
0, 0, 1 |
581 |
}; |
582 |
|
583 |
return transform (new_width, new_height, matrix); |
584 |
} |
585 |
|
586 |
rxvt_img * |
587 |
rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg) |
588 |
{ |
589 |
if (new_format == format) |
590 |
return clone (); |
591 |
|
592 |
rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
593 |
img->alloc (); |
594 |
|
595 |
Display *dpy = s->display->dpy; |
596 |
Picture src = src_picture (); |
597 |
Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
598 |
int op = PictOpSrc; |
599 |
|
600 |
if (format->direct.alphaMask && !new_format->direct.alphaMask) |
601 |
{ |
602 |
// does it have to be that complicated |
603 |
rgba c; |
604 |
bg.get (c); |
605 |
|
606 |
XRenderColor rc = { c.r, c.g, c.b, 0xffff }; |
607 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
608 |
|
609 |
op = PictOpOver; |
610 |
} |
611 |
|
612 |
XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
613 |
|
614 |
XRenderFreePicture (dpy, src); |
615 |
XRenderFreePicture (dpy, dst); |
616 |
|
617 |
return img; |
618 |
} |
619 |
|
620 |
rxvt_img * |
621 |
rxvt_img::blend (rxvt_img *img, double factor) |
622 |
{ |
623 |
rxvt_img *img2 = clone (); |
624 |
Display *dpy = s->display->dpy; |
625 |
Picture src = img->src_picture (); |
626 |
Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
627 |
Picture mask = create_xrender_mask (dpy, img->pm, False, False); |
628 |
|
629 |
XRenderColor mask_c; |
630 |
|
631 |
mask_c.alpha = float_to_component (factor); |
632 |
mask_c.red = |
633 |
mask_c.green = |
634 |
mask_c.blue = 0; |
635 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
636 |
|
637 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
638 |
|
639 |
XRenderFreePicture (dpy, src); |
640 |
XRenderFreePicture (dpy, dst); |
641 |
XRenderFreePicture (dpy, mask); |
642 |
|
643 |
return img2; |
644 |
} |
645 |
|
646 |
#endif |
647 |
|