1 |
#include <math.h> |
2 |
#include "../config.h" |
3 |
#include "rxvt.h" |
4 |
|
5 |
#if HAVE_IMG |
6 |
|
7 |
static XRenderPictFormat * |
8 |
find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
9 |
{ |
10 |
if (format->direct.alphaMask) |
11 |
return format; // already has alpha |
12 |
|
13 |
// try to find a suitable alpha format, one bit alpha is enough for our purposes |
14 |
if (format->type == PictTypeDirect) |
15 |
for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
16 |
if (f->direct.alphaMask |
17 |
&& f->type == PictTypeDirect |
18 |
&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
19 |
&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
20 |
&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
21 |
return f; |
22 |
|
23 |
// should be a very good fallback |
24 |
return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
25 |
} |
26 |
|
27 |
rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat) |
28 |
: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat), |
29 |
pm(0), ref(0) |
30 |
{ |
31 |
} |
32 |
|
33 |
rxvt_img::rxvt_img (const rxvt_img &img) |
34 |
: 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) |
35 |
{ |
36 |
++ref->cnt; |
37 |
} |
38 |
|
39 |
rxvt_img * |
40 |
rxvt_img::new_from_root (rxvt_screen *s) |
41 |
{ |
42 |
Display *dpy = s->display->dpy; |
43 |
unsigned int root_pm_w, root_pm_h; |
44 |
Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]); |
45 |
if (root_pixmap == None) |
46 |
root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]); |
47 |
|
48 |
if (root_pixmap == None) |
49 |
return 0; |
50 |
|
51 |
Window wdummy; |
52 |
int idummy; |
53 |
unsigned int udummy; |
54 |
|
55 |
if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy)) |
56 |
return 0; |
57 |
|
58 |
rxvt_img *img = new rxvt_img ( |
59 |
s, |
60 |
XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)), |
61 |
0, |
62 |
0, |
63 |
root_pm_w, |
64 |
root_pm_h |
65 |
); |
66 |
|
67 |
img->pm = root_pixmap; |
68 |
img->ref = new pixref (root_pm_w, root_pm_h); |
69 |
img->ref->ours = false; |
70 |
|
71 |
return img; |
72 |
} |
73 |
|
74 |
# if HAVE_PIXBUF |
75 |
|
76 |
rxvt_img * |
77 |
rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
78 |
{ |
79 |
Display *dpy = s->display->dpy; |
80 |
|
81 |
int width = gdk_pixbuf_get_width (pb); |
82 |
int height = gdk_pixbuf_get_height (pb); |
83 |
|
84 |
if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
85 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
86 |
|
87 |
// since we require rgb24/argb32 formats from xrender we assume |
88 |
// that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
89 |
|
90 |
int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
91 |
|
92 |
XImage xi; |
93 |
|
94 |
xi.width = width; |
95 |
xi.height = height; |
96 |
xi.xoffset = 0; |
97 |
xi.format = ZPixmap; |
98 |
xi.byte_order = ImageByteOrder (dpy); |
99 |
xi.bitmap_unit = 0; //XY only, unused |
100 |
xi.bitmap_bit_order = 0; //XY only, unused |
101 |
xi.bitmap_pad = BitmapPad (dpy); |
102 |
xi.depth = 32; |
103 |
xi.bytes_per_line = 0; |
104 |
xi.bits_per_pixel = 32; //Z only |
105 |
xi.red_mask = 0x00000000; //Z only, unused |
106 |
xi.green_mask = 0x00000000; //Z only, unused |
107 |
xi.blue_mask = 0x00000000; //Z only, unused |
108 |
xi.obdata = 0; // probably unused |
109 |
|
110 |
bool byte_order_mismatch = byte_order != xi.byte_order; |
111 |
|
112 |
if (!XInitImage (&xi)) |
113 |
rxvt_fatal ("unable to initialise ximage, please report.\n"); |
114 |
|
115 |
if (height > INT_MAX / xi.bytes_per_line) |
116 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); |
117 |
|
118 |
xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); |
119 |
|
120 |
int rowstride = gdk_pixbuf_get_rowstride (pb); |
121 |
bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb); |
122 |
unsigned char *row = gdk_pixbuf_get_pixels (pb); |
123 |
|
124 |
char *line = xi.data; |
125 |
|
126 |
for (int y = 0; y < height; y++) |
127 |
{ |
128 |
unsigned char *src = row; |
129 |
uint32_t *dst = (uint32_t *)line; |
130 |
|
131 |
if (!pb_has_alpha) |
132 |
for (int x = 0; x < width; x++) |
133 |
{ |
134 |
uint8_t r = *src++; |
135 |
uint8_t g = *src++; |
136 |
uint8_t b = *src++; |
137 |
|
138 |
uint32_t v = (255 << 24) | (r << 16) | (g << 8) | b; |
139 |
|
140 |
if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) |
141 |
v = ecb_bswap32 (v); |
142 |
|
143 |
*dst++ = v; |
144 |
} |
145 |
else |
146 |
for (int x = 0; x < width; x++) |
147 |
{ |
148 |
uint32_t v = *(uint32_t *)src; src += 4; |
149 |
|
150 |
if (ecb_big_endian ()) |
151 |
v = ecb_bswap32 (v); |
152 |
|
153 |
v = ecb_rotl32 (v, 8); // abgr to bgra |
154 |
|
155 |
if (!byte_order_mismatch) |
156 |
v = ecb_bswap32 (v); |
157 |
|
158 |
*dst++ = v; |
159 |
} |
160 |
|
161 |
row += rowstride; |
162 |
line += xi.bytes_per_line; |
163 |
} |
164 |
|
165 |
rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height); |
166 |
img->alloc (); |
167 |
|
168 |
GC gc = XCreateGC (dpy, img->pm, 0, 0); |
169 |
XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); |
170 |
XFreeGC (dpy, gc); |
171 |
|
172 |
free (xi.data); |
173 |
|
174 |
return img; |
175 |
} |
176 |
|
177 |
rxvt_img * |
178 |
rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
179 |
{ |
180 |
GError *err = 0; |
181 |
GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
182 |
|
183 |
if (!pb) |
184 |
rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
185 |
|
186 |
rxvt_img *img = new_from_pixbuf (s, pb); |
187 |
|
188 |
g_object_unref (pb); |
189 |
|
190 |
return img; |
191 |
} |
192 |
|
193 |
# endif |
194 |
|
195 |
void |
196 |
rxvt_img::destroy () |
197 |
{ |
198 |
if (--ref->cnt) |
199 |
return; |
200 |
|
201 |
if (pm && ref->ours) |
202 |
XFreePixmap (s->display->dpy, pm); |
203 |
|
204 |
delete ref; |
205 |
} |
206 |
|
207 |
rxvt_img::~rxvt_img () |
208 |
{ |
209 |
destroy (); |
210 |
} |
211 |
|
212 |
void |
213 |
rxvt_img::alloc () |
214 |
{ |
215 |
pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
216 |
ref = new pixref (w, h); |
217 |
} |
218 |
|
219 |
Picture |
220 |
rxvt_img::src_picture () |
221 |
{ |
222 |
Display *dpy = s->display->dpy; |
223 |
|
224 |
XRenderPictureAttributes pa; |
225 |
pa.repeat = repeat; |
226 |
Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
227 |
|
228 |
return pic; |
229 |
} |
230 |
|
231 |
void |
232 |
rxvt_img::unshare () |
233 |
{ |
234 |
if (ref->cnt == 1 && ref->ours) |
235 |
return; |
236 |
|
237 |
Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); |
238 |
GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
239 |
XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); |
240 |
XFreeGC (s->display->dpy, gc); |
241 |
|
242 |
destroy (); |
243 |
|
244 |
pm = pm2; |
245 |
ref = new pixref (ref->w, ref->h); |
246 |
} |
247 |
|
248 |
void |
249 |
rxvt_img::fill (const rgba &c) |
250 |
{ |
251 |
XRenderColor rc = { c.r, c.g, c.b, c.a }; |
252 |
|
253 |
Display *dpy = s->display->dpy; |
254 |
Picture src = src_picture (); |
255 |
XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h); |
256 |
XRenderFreePicture (dpy, src); |
257 |
} |
258 |
|
259 |
void |
260 |
rxvt_img::add_alpha () |
261 |
{ |
262 |
if (format->direct.alphaMask) |
263 |
return; |
264 |
|
265 |
Display *dpy = s->display->dpy; |
266 |
|
267 |
rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat); |
268 |
img->alloc (); |
269 |
|
270 |
Picture src = src_picture (); |
271 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
272 |
|
273 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
274 |
|
275 |
XRenderFreePicture (dpy, src); |
276 |
XRenderFreePicture (dpy, dst); |
277 |
|
278 |
::swap (img->ref, ref); |
279 |
::swap (img->pm , pm ); |
280 |
|
281 |
delete img; |
282 |
} |
283 |
|
284 |
static void |
285 |
get_gaussian_kernel (int radius, int width, rxvt_img::nv *kernel, XFixed *params) |
286 |
{ |
287 |
rxvt_img::nv sigma = radius / 2.0; |
288 |
rxvt_img::nv scale = sqrt (2.0 * M_PI) * sigma; |
289 |
rxvt_img::nv sum = 0.0; |
290 |
|
291 |
for (int i = 0; i < width; i++) |
292 |
{ |
293 |
rxvt_img::nv x = i - width / 2; |
294 |
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
295 |
sum += kernel[i]; |
296 |
} |
297 |
|
298 |
params[0] = XDoubleToFixed (width); |
299 |
params[1] = XDoubleToFixed (1); |
300 |
|
301 |
for (int i = 0; i < width; i++) |
302 |
params[i+2] = XDoubleToFixed (kernel[i] / sum); |
303 |
} |
304 |
|
305 |
rxvt_img * |
306 |
rxvt_img::blur (int rh, int rv) |
307 |
{ |
308 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
309 |
return clone (); |
310 |
|
311 |
Display *dpy = s->display->dpy; |
312 |
int size = max (rh, rv) * 2 + 1; |
313 |
nv *kernel = (nv *)malloc (size * sizeof (nv)); |
314 |
XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
315 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
316 |
img->alloc (); |
317 |
|
318 |
XRenderPictureAttributes pa; |
319 |
pa.repeat = RepeatPad; |
320 |
Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
321 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
322 |
|
323 |
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
324 |
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
325 |
XFreePixmap (dpy, tmp_pm); |
326 |
|
327 |
if (kernel && params) |
328 |
{ |
329 |
size = rh * 2 + 1; |
330 |
get_gaussian_kernel (rh, size, kernel, params); |
331 |
|
332 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
333 |
XRenderComposite (dpy, |
334 |
PictOpSrc, |
335 |
src, |
336 |
None, |
337 |
tmp, |
338 |
0, 0, |
339 |
0, 0, |
340 |
0, 0, |
341 |
w, h); |
342 |
|
343 |
size = rv * 2 + 1; |
344 |
get_gaussian_kernel (rv, size, kernel, params); |
345 |
::swap (params[0], params[1]); |
346 |
|
347 |
XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2); |
348 |
XRenderComposite (dpy, |
349 |
PictOpSrc, |
350 |
tmp, |
351 |
None, |
352 |
dst, |
353 |
0, 0, |
354 |
0, 0, |
355 |
0, 0, |
356 |
w, h); |
357 |
} |
358 |
|
359 |
free (kernel); |
360 |
free (params); |
361 |
|
362 |
XRenderFreePicture (dpy, src); |
363 |
XRenderFreePicture (dpy, dst); |
364 |
XRenderFreePicture (dpy, tmp); |
365 |
|
366 |
return img; |
367 |
} |
368 |
|
369 |
static Picture |
370 |
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha) |
371 |
{ |
372 |
Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
373 |
|
374 |
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
375 |
XRenderPictureAttributes pa; |
376 |
pa.repeat = RepeatNormal; |
377 |
pa.component_alpha = component_alpha; |
378 |
Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); |
379 |
|
380 |
XFreePixmap (dpy, pixmap); |
381 |
|
382 |
return mask; |
383 |
} |
384 |
|
385 |
static void |
386 |
extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc) |
387 |
{ |
388 |
int32_t x = clamp (c, cl0, cl1); |
389 |
c -= x; |
390 |
xc = x; |
391 |
} |
392 |
|
393 |
static bool |
394 |
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) |
395 |
{ |
396 |
extract (cl0, cl1, r, xr); |
397 |
extract (cl0, cl1, g, xg); |
398 |
extract (cl0, cl1, b, xb); |
399 |
extract (cl0, cl1, a, xa); |
400 |
|
401 |
return xr | xg | xb | xa; |
402 |
} |
403 |
|
404 |
void |
405 |
rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) |
406 |
{ |
407 |
unshare (); |
408 |
|
409 |
Display *dpy = s->display->dpy; |
410 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
411 |
|
412 |
// loop should not be needed for brightness, as only -1..1 makes sense |
413 |
//while (r | g | b | a) |
414 |
{ |
415 |
unsigned short xr, xg, xb, xa; |
416 |
XRenderColor mask_c; |
417 |
|
418 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
419 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
420 |
|
421 |
if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
422 |
{ |
423 |
XRenderColor mask_w = { 65535, 65535, 65535, 65535 }; |
424 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
425 |
mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing |
426 |
mask_c.green = -mask_c.green; |
427 |
mask_c.blue = -mask_c.blue; |
428 |
mask_c.alpha = -mask_c.alpha; |
429 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
430 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
431 |
} |
432 |
} |
433 |
|
434 |
XRenderFreePicture (dpy, dst); |
435 |
} |
436 |
|
437 |
void |
438 |
rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a) |
439 |
{ |
440 |
if (r < 0 || g < 0 || b < 0 || a < 0) |
441 |
rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); |
442 |
|
443 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
444 |
img->alloc (); |
445 |
img->fill (rgba (0, 0, 0, 0)); |
446 |
|
447 |
// premultiply (yeah, these are not exact, sue me or fix it) |
448 |
r = (r * (a >> 8)) >> 8; |
449 |
g = (g * (a >> 8)) >> 8; |
450 |
b = (b * (a >> 8)) >> 8; |
451 |
|
452 |
Display *dpy = s->display->dpy; |
453 |
|
454 |
Picture src = src_picture (); |
455 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
456 |
Picture mul = create_xrender_mask (dpy, pm, True, True); |
457 |
|
458 |
//TODO: this operator does not yet implement some useful contrast |
459 |
while (r | g | b | a) |
460 |
{ |
461 |
unsigned short xr, xg, xb, xa; |
462 |
XRenderColor mask_c; |
463 |
|
464 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
465 |
{ |
466 |
XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1); |
467 |
XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h); |
468 |
} |
469 |
} |
470 |
|
471 |
XRenderFreePicture (dpy, mul); |
472 |
XRenderFreePicture (dpy, dst); |
473 |
XRenderFreePicture (dpy, src); |
474 |
|
475 |
::swap (img->ref, ref); |
476 |
::swap (img->pm , pm ); |
477 |
|
478 |
delete img; |
479 |
} |
480 |
|
481 |
rxvt_img * |
482 |
rxvt_img::clone () |
483 |
{ |
484 |
return new rxvt_img (*this); |
485 |
} |
486 |
|
487 |
rxvt_img * |
488 |
rxvt_img::reify () |
489 |
{ |
490 |
if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
491 |
return clone (); |
492 |
|
493 |
Display *dpy = s->display->dpy; |
494 |
|
495 |
// add an alpha channel if... |
496 |
bool alpha = !format->direct.alphaMask // pixmap has none yet |
497 |
&& (x || y) // we need one because of non-zero offset |
498 |
&& repeat == RepeatNone; // and we have no good pixels to fill with |
499 |
|
500 |
rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
501 |
img->alloc (); |
502 |
|
503 |
Picture src = src_picture (); |
504 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
505 |
|
506 |
if (alpha) |
507 |
{ |
508 |
XRenderColor rc = { 0, 0, 0, 0 }; |
509 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
510 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h); |
511 |
} |
512 |
else |
513 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); |
514 |
|
515 |
XRenderFreePicture (dpy, src); |
516 |
XRenderFreePicture (dpy, dst); |
517 |
|
518 |
return img; |
519 |
} |
520 |
|
521 |
rxvt_img * |
522 |
rxvt_img::sub_rect (int x, int y, int width, int height) |
523 |
{ |
524 |
rxvt_img *img = clone (); |
525 |
|
526 |
img->x += x; |
527 |
img->y += y; |
528 |
|
529 |
if (w != width || h != height) |
530 |
{ |
531 |
img->w = width; |
532 |
img->h = height; |
533 |
|
534 |
rxvt_img *img2 = img->reify (); |
535 |
delete img; |
536 |
img = img2; |
537 |
} |
538 |
|
539 |
return img; |
540 |
} |
541 |
|
542 |
static void |
543 |
mat_invert (rxvt_img::nv mat[3][3], rxvt_img::nv (&inv)[3][3]) |
544 |
{ |
545 |
rxvt_img::nv s0 = mat [2][2] * mat [1][1] - mat [2][1] * mat [1][2]; |
546 |
rxvt_img::nv s1 = mat [2][1] * mat [0][2] - mat [2][2] * mat [0][1]; |
547 |
rxvt_img::nv s2 = mat [1][2] * mat [0][1] - mat [1][1] * mat [0][2]; |
548 |
|
549 |
rxvt_img::nv invdet = 1. / (mat [0][0] * s0 + mat [1][0] * s1 + mat [2][0] * s2); |
550 |
|
551 |
inv [0][0] = invdet * s0; |
552 |
inv [0][1] = invdet * s1; |
553 |
inv [0][2] = invdet * s2; |
554 |
|
555 |
inv [1][0] = invdet * (mat [2][0] * mat [1][2] - mat [2][2] * mat [1][0]); |
556 |
inv [1][1] = invdet * (mat [2][2] * mat [0][0] - mat [2][0] * mat [0][2]); |
557 |
inv [1][2] = invdet * (mat [1][0] * mat [0][2] - mat [1][2] * mat [0][0]); |
558 |
|
559 |
inv [2][0] = invdet * (mat [2][1] * mat [1][0] - mat [2][0] * mat [1][1]); |
560 |
inv [2][1] = invdet * (mat [2][0] * mat [0][1] - mat [2][1] * mat [0][0]); |
561 |
inv [2][2] = invdet * (mat [1][1] * mat [0][0] - mat [1][0] * mat [0][1]); |
562 |
} |
563 |
|
564 |
static rxvt_img::nv |
565 |
mat_apply (rxvt_img::nv mat[3][3], int i, rxvt_img::nv x, rxvt_img::nv y) |
566 |
{ |
567 |
rxvt_img::nv v = mat [i][0] * x + mat [i][1] * y + mat [i][2]; |
568 |
rxvt_img::nv w = mat [2][0] * x + mat [2][1] * y + mat [2][2]; |
569 |
|
570 |
return v * (1. / w); |
571 |
} |
572 |
|
573 |
rxvt_img * |
574 |
rxvt_img::transform (nv matrix[3][3]) |
575 |
{ |
576 |
// find new offset |
577 |
int ox = mat_apply (matrix, 0, x, y); |
578 |
int oy = mat_apply (matrix, 1, x, y); |
579 |
|
580 |
// calculate new pixel bounding box coordinates |
581 |
nv d [2], rmin[2], rmax[2]; |
582 |
|
583 |
for (int i = 0; i < 2; ++i) |
584 |
{ |
585 |
nv v; |
586 |
v = mat_apply (matrix, i, 0, 0); rmin [i] = rmax [i] = v; d [i] = v; |
587 |
v = mat_apply (matrix, i, w, 0); min_it (rmin [i], v); max_it (rmax [i], v); |
588 |
v = mat_apply (matrix, i, 0, h); min_it (rmin [i], v); max_it (rmax [i], v); |
589 |
v = mat_apply (matrix, i, w, h); min_it (rmin [i], v); max_it (rmax [i], v); |
590 |
} |
591 |
|
592 |
int dx = floor (rmin [0]); |
593 |
int dy = floor (rmin [1]); |
594 |
|
595 |
int new_width = ceil (rmax [0] - dx); |
596 |
int new_height = ceil (rmax [1] - dy); |
597 |
|
598 |
nv inv[3][3]; |
599 |
mat_invert (matrix, inv); |
600 |
|
601 |
rxvt_img *img = new rxvt_img (s, format, ox - dx - d [0], oy - dy - d [1], new_width, new_height, repeat); |
602 |
img->alloc (); |
603 |
|
604 |
Display *dpy = s->display->dpy; |
605 |
Picture src = src_picture (); |
606 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
607 |
|
608 |
XTransform xfrm; |
609 |
|
610 |
for (int i = 0; i < 3; ++i) |
611 |
for (int j = 0; j < 3; ++j) |
612 |
xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
613 |
|
614 |
XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
615 |
XRenderSetPictureTransform (dpy, src, &xfrm); |
616 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, dx, dy, 0, 0, 0, 0, new_width, new_height); |
617 |
|
618 |
XRenderFreePicture (dpy, src); |
619 |
XRenderFreePicture (dpy, dst); |
620 |
|
621 |
return img; |
622 |
} |
623 |
|
624 |
rxvt_img * |
625 |
rxvt_img::scale (int new_width, int new_height) |
626 |
{ |
627 |
if (w == new_width && h == new_height) |
628 |
return clone (); |
629 |
|
630 |
nv matrix[3][3] = { |
631 |
{ new_width / (nv)w, 0, 0 }, |
632 |
{ 0, new_height / (nv)h, 0 }, |
633 |
{ 0, 0, 1 } |
634 |
}; |
635 |
|
636 |
int old_repeat_mode = repeat; |
637 |
repeat = RepeatPad; // not right, but xrender can't properly scale it seems |
638 |
|
639 |
rxvt_img *img = transform (matrix); |
640 |
|
641 |
repeat = old_repeat_mode; |
642 |
img->repeat = repeat; |
643 |
|
644 |
return img; |
645 |
} |
646 |
|
647 |
rxvt_img * |
648 |
rxvt_img::rotate (int cx, int cy, nv phi) |
649 |
{ |
650 |
nv s = sin (phi); |
651 |
nv c = cos (phi); |
652 |
|
653 |
nv matrix[3][3] = { |
654 |
{ c, -s, cx - c * cx + s * cy }, |
655 |
{ s, c, cy - s * cx - c * cy }, |
656 |
{ 0, 0, 1 } |
657 |
//{ c, -s, 0 }, |
658 |
//{ s, c, 0 }, |
659 |
//{ 0, 0, 1 } |
660 |
}; |
661 |
|
662 |
//move (-cx, -cy); |
663 |
rxvt_img *img = transform (matrix); |
664 |
//move ( cx, cy); |
665 |
//img->move (cx, cy); |
666 |
|
667 |
return img; |
668 |
} |
669 |
|
670 |
rxvt_img * |
671 |
rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg) |
672 |
{ |
673 |
if (new_format == format) |
674 |
return clone (); |
675 |
|
676 |
rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
677 |
img->alloc (); |
678 |
|
679 |
Display *dpy = s->display->dpy; |
680 |
Picture src = src_picture (); |
681 |
Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
682 |
int op = PictOpSrc; |
683 |
|
684 |
if (format->direct.alphaMask && !new_format->direct.alphaMask) |
685 |
{ |
686 |
// does it have to be that complicated |
687 |
XRenderColor rc = { bg.r, bg.g, bg.b, bg.a }; |
688 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
689 |
|
690 |
op = PictOpOver; |
691 |
} |
692 |
|
693 |
XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
694 |
|
695 |
XRenderFreePicture (dpy, src); |
696 |
XRenderFreePicture (dpy, dst); |
697 |
|
698 |
return img; |
699 |
} |
700 |
|
701 |
rxvt_img * |
702 |
rxvt_img::blend (rxvt_img *img, nv factor) |
703 |
{ |
704 |
rxvt_img *img2 = clone (); |
705 |
Display *dpy = s->display->dpy; |
706 |
Picture src = img->src_picture (); |
707 |
Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
708 |
Picture mask = create_xrender_mask (dpy, img->pm, False, False); |
709 |
|
710 |
XRenderColor mask_c; |
711 |
|
712 |
mask_c.alpha = float_to_component (factor); |
713 |
mask_c.red = |
714 |
mask_c.green = |
715 |
mask_c.blue = 0; |
716 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
717 |
|
718 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
719 |
|
720 |
XRenderFreePicture (dpy, src); |
721 |
XRenderFreePicture (dpy, dst); |
722 |
XRenderFreePicture (dpy, mask); |
723 |
|
724 |
return img2; |
725 |
} |
726 |
|
727 |
#endif |
728 |
|