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 |
|
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 = 32; |
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 |
bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb); |
101 |
unsigned char *row = gdk_pixbuf_get_pixels (pb); |
102 |
|
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 (!pb_has_alpha) |
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 = (255 << 24) | (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, 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 |
|
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rxvt_img * |
157 |
rxvt_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 |
# endif |
172 |
|
173 |
void |
174 |
rxvt_img::destroy () |
175 |
{ |
176 |
if (--ref->cnt) |
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return; |
178 |
|
179 |
if (pm && ref->ours) |
180 |
XFreePixmap (s->display->dpy, pm); |
181 |
|
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delete ref; |
183 |
} |
184 |
|
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rxvt_img::~rxvt_img () |
186 |
{ |
187 |
destroy (); |
188 |
} |
189 |
|
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void |
191 |
rxvt_img::alloc () |
192 |
{ |
193 |
pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
194 |
ref = new pixref (w, h); |
195 |
} |
196 |
|
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Picture |
198 |
rxvt_img::src_picture () |
199 |
{ |
200 |
Display *dpy = s->display->dpy; |
201 |
|
202 |
XRenderPictureAttributes pa; |
203 |
pa.repeat = repeat; |
204 |
Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
205 |
|
206 |
return pic; |
207 |
} |
208 |
|
209 |
void |
210 |
rxvt_img::unshare () |
211 |
{ |
212 |
if (ref->cnt == 1 && ref->ours) |
213 |
return; |
214 |
|
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); |
218 |
XFreeGC (s->display->dpy, gc); |
219 |
|
220 |
destroy (); |
221 |
|
222 |
pm = pm2; |
223 |
ref = new pixref (ref->w, ref->h); |
224 |
} |
225 |
|
226 |
void |
227 |
rxvt_img::fill (const rxvt_color &c) |
228 |
{ |
229 |
XGCValues gcv; |
230 |
gcv.foreground = c; |
231 |
GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); |
232 |
XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); |
233 |
XFreeGC (s->display->dpy, gc); |
234 |
} |
235 |
|
236 |
static void |
237 |
get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) |
238 |
{ |
239 |
double sigma = radius / 2.0; |
240 |
double scale = sqrt (2.0 * M_PI) * sigma; |
241 |
double sum = 0.0; |
242 |
|
243 |
for (int i = 0; i < width; i++) |
244 |
{ |
245 |
double x = i - width / 2; |
246 |
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
247 |
sum += kernel[i]; |
248 |
} |
249 |
|
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params[0] = XDoubleToFixed (width); |
251 |
params[1] = XDoubleToFixed (1); |
252 |
|
253 |
for (int i = 0; i < width; i++) |
254 |
params[i+2] = XDoubleToFixed (kernel[i] / sum); |
255 |
} |
256 |
|
257 |
rxvt_img * |
258 |
rxvt_img::blur (int rh, int rv) |
259 |
{ |
260 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
261 |
return clone (); |
262 |
|
263 |
Display *dpy = s->display->dpy; |
264 |
int size = max (rh, rv) * 2 + 1; |
265 |
double *kernel = (double *)malloc (size * sizeof (double)); |
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 |
XRenderPictureAttributes pa; |
271 |
pa.repeat = RepeatPad; |
272 |
Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
273 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
274 |
|
275 |
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
276 |
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
277 |
XFreePixmap (dpy, tmp_pm); |
278 |
|
279 |
if (kernel && params) |
280 |
{ |
281 |
size = rh * 2 + 1; |
282 |
get_gaussian_kernel (rh, size, kernel, params); |
283 |
|
284 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
285 |
XRenderComposite (dpy, |
286 |
PictOpSrc, |
287 |
src, |
288 |
None, |
289 |
tmp, |
290 |
0, 0, |
291 |
0, 0, |
292 |
0, 0, |
293 |
w, h); |
294 |
|
295 |
size = rv * 2 + 1; |
296 |
get_gaussian_kernel (rv, size, kernel, params); |
297 |
::swap (params[0], params[1]); |
298 |
|
299 |
XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2); |
300 |
XRenderComposite (dpy, |
301 |
PictOpSrc, |
302 |
tmp, |
303 |
None, |
304 |
dst, |
305 |
0, 0, |
306 |
0, 0, |
307 |
0, 0, |
308 |
w, h); |
309 |
} |
310 |
|
311 |
free (kernel); |
312 |
free (params); |
313 |
XRenderFreePicture (dpy, src); |
314 |
XRenderFreePicture (dpy, dst); |
315 |
XRenderFreePicture (dpy, tmp); |
316 |
|
317 |
return img; |
318 |
} |
319 |
|
320 |
static Picture |
321 |
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha) |
322 |
{ |
323 |
Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
324 |
|
325 |
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
326 |
XRenderPictureAttributes pa; |
327 |
pa.repeat = RepeatNormal; |
328 |
pa.component_alpha = component_alpha; |
329 |
Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); |
330 |
|
331 |
XFreePixmap (dpy, pixmap); |
332 |
|
333 |
return mask; |
334 |
} |
335 |
|
336 |
static void |
337 |
extract (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 |
|
344 |
static bool |
345 |
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) |
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 |
|
355 |
void |
356 |
rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) |
357 |
{ |
358 |
unshare (); |
359 |
|
360 |
Display *dpy = s->display->dpy; |
361 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
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; |
367 |
XRenderColor mask_c; |
368 |
|
369 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
370 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
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 |
|
388 |
void |
389 |
rxvt_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 |
{ |
422 |
XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1); |
423 |
XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h); |
424 |
} |
425 |
} |
426 |
|
427 |
XRenderFreePicture (dpy, mul); |
428 |
XRenderFreePicture (dpy, dst); |
429 |
XRenderFreePicture (dpy, src); |
430 |
|
431 |
::swap (img->ref, ref); |
432 |
::swap (img->pm , pm ); |
433 |
|
434 |
delete img; |
435 |
} |
436 |
|
437 |
rxvt_img * |
438 |
rxvt_img::clone () |
439 |
{ |
440 |
return new rxvt_img (*this); |
441 |
} |
442 |
|
443 |
static XRenderPictFormat * |
444 |
find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
445 |
{ |
446 |
if (format->direct.alphaMask) |
447 |
return format; // already has alpha |
448 |
|
449 |
// try to find a suitable alpha format, one bit alpha is enough for our purposes |
450 |
if (format->type == PictTypeDirect) |
451 |
for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
452 |
if (f->direct.alphaMask |
453 |
&& f->type == PictTypeDirect |
454 |
&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
455 |
&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
456 |
&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
457 |
return f; |
458 |
|
459 |
// should be a very good fallback |
460 |
return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
461 |
} |
462 |
|
463 |
rxvt_img * |
464 |
rxvt_img::reify () |
465 |
{ |
466 |
if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
467 |
return clone (); |
468 |
|
469 |
Display *dpy = s->display->dpy; |
470 |
|
471 |
// add an alpha channel if... |
472 |
bool alpha = !format->direct.alphaMask // pixmap has none yet |
473 |
&& (x || y) // we need one because of non-zero offset |
474 |
&& repeat == RepeatNone; // and we have no good pixels to fill with |
475 |
|
476 |
rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
477 |
img->alloc (); |
478 |
|
479 |
Picture src = src_picture (); |
480 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
481 |
|
482 |
if (alpha) |
483 |
{ |
484 |
XRenderColor rc = { 0, 0, 0, 0 }; |
485 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
486 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h); |
487 |
} |
488 |
else |
489 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); |
490 |
|
491 |
XRenderFreePicture (dpy, src); |
492 |
XRenderFreePicture (dpy, dst); |
493 |
|
494 |
return img; |
495 |
} |
496 |
|
497 |
rxvt_img * |
498 |
rxvt_img::sub_rect (int x, int y, int width, int height) |
499 |
{ |
500 |
rxvt_img *img = clone (); |
501 |
|
502 |
img->x += x; |
503 |
img->y += y; |
504 |
|
505 |
if (w != width || h != height) |
506 |
{ |
507 |
img->w = width; |
508 |
img->h = height; |
509 |
|
510 |
rxvt_img *img2 = img->reify (); |
511 |
delete img; |
512 |
img = img2; |
513 |
} |
514 |
|
515 |
return img; |
516 |
} |
517 |
|
518 |
rxvt_img * |
519 |
rxvt_img::transform (int new_width, int new_height, double matrix[9]) |
520 |
{ |
521 |
rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat); |
522 |
img->alloc (); |
523 |
|
524 |
Display *dpy = s->display->dpy; |
525 |
Picture src = src_picture (); |
526 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
527 |
|
528 |
XTransform xfrm; |
529 |
|
530 |
for (int i = 0; i < 3; ++i) |
531 |
for (int j = 0; j < 3; ++j) |
532 |
xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); |
533 |
|
534 |
xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO |
535 |
xfrm.matrix [1][2] -= XDoubleToFixed (y); |
536 |
|
537 |
XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
538 |
XRenderSetPictureTransform (dpy, src, &xfrm); |
539 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); |
540 |
|
541 |
XRenderFreePicture (dpy, src); |
542 |
XRenderFreePicture (dpy, dst); |
543 |
|
544 |
return img; |
545 |
} |
546 |
|
547 |
rxvt_img * |
548 |
rxvt_img::scale (int new_width, int new_height) |
549 |
{ |
550 |
if (w == new_width && h == new_height) |
551 |
return clone (); |
552 |
|
553 |
double matrix[9] = { |
554 |
w / (double)new_width, 0, 0, |
555 |
0, h / (double)new_height, 0, |
556 |
0, 0, 1 |
557 |
}; |
558 |
|
559 |
int old_repeat_mode = repeat; |
560 |
repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems |
561 |
|
562 |
rxvt_img *img = transform (new_width, new_height, matrix); |
563 |
|
564 |
repeat = old_repeat_mode; |
565 |
img->repeat = repeat; |
566 |
|
567 |
return img; |
568 |
} |
569 |
|
570 |
rxvt_img * |
571 |
rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi) |
572 |
{ |
573 |
double s = sin (phi); |
574 |
double c = cos (phi); |
575 |
|
576 |
double matrix[9] = { |
577 |
c, -s, -c * x + s * y + x, |
578 |
s, c, -s * x - c * y + y, |
579 |
0, 0, 1 |
580 |
}; |
581 |
|
582 |
return transform (new_width, new_height, matrix); |
583 |
} |
584 |
|
585 |
rxvt_img * |
586 |
rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg) |
587 |
{ |
588 |
if (new_format == format) |
589 |
return clone (); |
590 |
|
591 |
rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
592 |
img->alloc (); |
593 |
|
594 |
Display *dpy = s->display->dpy; |
595 |
Picture src = src_picture (); |
596 |
Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
597 |
int op = PictOpSrc; |
598 |
|
599 |
if (format->direct.alphaMask && !new_format->direct.alphaMask) |
600 |
{ |
601 |
// does it have to be that complicated |
602 |
rgba c; |
603 |
bg.get (c); |
604 |
|
605 |
XRenderColor rc = { c.r, c.g, c.b, 0xffff }; |
606 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
607 |
|
608 |
op = PictOpOver; |
609 |
} |
610 |
|
611 |
XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
612 |
|
613 |
XRenderFreePicture (dpy, src); |
614 |
XRenderFreePicture (dpy, dst); |
615 |
|
616 |
return img; |
617 |
} |
618 |
|
619 |
rxvt_img * |
620 |
rxvt_img::blend (rxvt_img *img, double factor) |
621 |
{ |
622 |
rxvt_img *img2 = clone (); |
623 |
Display *dpy = s->display->dpy; |
624 |
Picture src = img->src_picture (); |
625 |
Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
626 |
Picture mask = create_xrender_mask (dpy, img->pm, False, False); |
627 |
|
628 |
XRenderColor mask_c; |
629 |
|
630 |
mask_c.alpha = float_to_component (factor); |
631 |
mask_c.red = |
632 |
mask_c.green = |
633 |
mask_c.blue = 0; |
634 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
635 |
|
636 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
637 |
|
638 |
XRenderFreePicture (dpy, src); |
639 |
XRenderFreePicture (dpy, dst); |
640 |
XRenderFreePicture (dpy, mask); |
641 |
|
642 |
return img2; |
643 |
} |
644 |
|
645 |
#endif |
646 |
|