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 |
|
56 |
rxvt_img * |
57 |
rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
58 |
{ |
59 |
Display *dpy = s->display->dpy; |
60 |
|
61 |
int width = gdk_pixbuf_get_width (pb); |
62 |
int height = gdk_pixbuf_get_height (pb); |
63 |
|
64 |
if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
65 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
66 |
|
67 |
// since we require rgb24/argb32 formats from xrender we assume |
68 |
// that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
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 = 32; |
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 |
bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb); |
102 |
unsigned char *row = gdk_pixbuf_get_pixels (pb); |
103 |
|
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 (!pb_has_alpha) |
112 |
for (int x = 0; x < width; x++) |
113 |
{ |
114 |
uint8_t r = *src++; |
115 |
uint8_t g = *src++; |
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uint8_t b = *src++; |
117 |
|
118 |
uint32_t v = (255 << 24) | (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, 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 |
|
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return img; |
155 |
} |
156 |
|
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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 |
|
173 |
# endif |
174 |
|
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void |
176 |
rxvt_img::destroy () |
177 |
{ |
178 |
if (--ref->cnt) |
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return; |
180 |
|
181 |
if (pm && ref->ours) |
182 |
XFreePixmap (s->display->dpy, pm); |
183 |
|
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delete ref; |
185 |
} |
186 |
|
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rxvt_img::~rxvt_img () |
188 |
{ |
189 |
destroy (); |
190 |
} |
191 |
|
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void |
193 |
rxvt_img::alloc () |
194 |
{ |
195 |
pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
196 |
ref = new pixref (w, h); |
197 |
} |
198 |
|
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Picture |
200 |
rxvt_img::src_picture () |
201 |
{ |
202 |
Display *dpy = s->display->dpy; |
203 |
|
204 |
XRenderPictureAttributes pa; |
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pa.repeat = repeat; |
206 |
Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
207 |
|
208 |
return pic; |
209 |
} |
210 |
|
211 |
void |
212 |
rxvt_img::unshare () |
213 |
{ |
214 |
if (ref->cnt == 1 && ref->ours) |
215 |
return; |
216 |
|
217 |
Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); |
218 |
GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
219 |
XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); |
220 |
XFreeGC (s->display->dpy, gc); |
221 |
|
222 |
destroy (); |
223 |
|
224 |
pm = pm2; |
225 |
ref = new pixref (ref->w, ref->h); |
226 |
} |
227 |
|
228 |
void |
229 |
rxvt_img::fill (const rxvt_color &c) |
230 |
{ |
231 |
rgba cc; |
232 |
c.get (cc); |
233 |
XRenderColor rc = { cc.r, cc.g, cc.b, cc.a }; |
234 |
|
235 |
Display *dpy = s->display->dpy; |
236 |
Picture src = src_picture (); |
237 |
XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h); |
238 |
XRenderFreePicture (dpy, src); |
239 |
} |
240 |
|
241 |
static void |
242 |
get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) |
243 |
{ |
244 |
double sigma = radius / 2.0; |
245 |
double scale = sqrt (2.0 * M_PI) * sigma; |
246 |
double sum = 0.0; |
247 |
|
248 |
for (int i = 0; i < width; i++) |
249 |
{ |
250 |
double x = i - width / 2; |
251 |
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
252 |
sum += kernel[i]; |
253 |
} |
254 |
|
255 |
params[0] = XDoubleToFixed (width); |
256 |
params[1] = XDoubleToFixed (1); |
257 |
|
258 |
for (int i = 0; i < width; i++) |
259 |
params[i+2] = XDoubleToFixed (kernel[i] / sum); |
260 |
} |
261 |
|
262 |
rxvt_img * |
263 |
rxvt_img::blur (int rh, int rv) |
264 |
{ |
265 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
266 |
return clone (); |
267 |
|
268 |
Display *dpy = s->display->dpy; |
269 |
int size = max (rh, rv) * 2 + 1; |
270 |
double *kernel = (double *)malloc (size * sizeof (double)); |
271 |
XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
272 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
273 |
img->alloc (); |
274 |
|
275 |
XRenderPictureAttributes pa; |
276 |
pa.repeat = RepeatPad; |
277 |
Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
278 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
279 |
|
280 |
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
281 |
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
282 |
XFreePixmap (dpy, tmp_pm); |
283 |
|
284 |
if (kernel && params) |
285 |
{ |
286 |
size = rh * 2 + 1; |
287 |
get_gaussian_kernel (rh, size, kernel, params); |
288 |
|
289 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
290 |
XRenderComposite (dpy, |
291 |
PictOpSrc, |
292 |
src, |
293 |
None, |
294 |
tmp, |
295 |
0, 0, |
296 |
0, 0, |
297 |
0, 0, |
298 |
w, h); |
299 |
|
300 |
size = rv * 2 + 1; |
301 |
get_gaussian_kernel (rv, size, kernel, params); |
302 |
::swap (params[0], params[1]); |
303 |
|
304 |
XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2); |
305 |
XRenderComposite (dpy, |
306 |
PictOpSrc, |
307 |
tmp, |
308 |
None, |
309 |
dst, |
310 |
0, 0, |
311 |
0, 0, |
312 |
0, 0, |
313 |
w, h); |
314 |
} |
315 |
|
316 |
free (kernel); |
317 |
free (params); |
318 |
|
319 |
XRenderFreePicture (dpy, src); |
320 |
XRenderFreePicture (dpy, dst); |
321 |
XRenderFreePicture (dpy, tmp); |
322 |
|
323 |
return img; |
324 |
} |
325 |
|
326 |
static Picture |
327 |
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha) |
328 |
{ |
329 |
Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
330 |
|
331 |
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
332 |
XRenderPictureAttributes pa; |
333 |
pa.repeat = RepeatNormal; |
334 |
pa.component_alpha = component_alpha; |
335 |
Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); |
336 |
|
337 |
XFreePixmap (dpy, pixmap); |
338 |
|
339 |
return mask; |
340 |
} |
341 |
|
342 |
static void |
343 |
extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc) |
344 |
{ |
345 |
int32_t x = clamp (c, cl0, cl1); |
346 |
c -= x; |
347 |
xc = x; |
348 |
} |
349 |
|
350 |
static bool |
351 |
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) |
352 |
{ |
353 |
extract (cl0, cl1, r, xr); |
354 |
extract (cl0, cl1, g, xg); |
355 |
extract (cl0, cl1, b, xb); |
356 |
extract (cl0, cl1, a, xa); |
357 |
|
358 |
return xr | xg | xb | xa; |
359 |
} |
360 |
|
361 |
void |
362 |
rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) |
363 |
{ |
364 |
unshare (); |
365 |
|
366 |
Display *dpy = s->display->dpy; |
367 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
368 |
|
369 |
// loop should not be needed for brightness, as only -1..1 makes sense |
370 |
//while (r | g | b | a) |
371 |
{ |
372 |
unsigned short xr, xg, xb, xa; |
373 |
XRenderColor mask_c; |
374 |
|
375 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
376 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
377 |
|
378 |
if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
379 |
{ |
380 |
XRenderColor mask_w = { 65535, 65535, 65535, 65535 }; |
381 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
382 |
mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing |
383 |
mask_c.green = -mask_c.green; |
384 |
mask_c.blue = -mask_c.blue; |
385 |
mask_c.alpha = -mask_c.alpha; |
386 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
387 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
388 |
} |
389 |
} |
390 |
|
391 |
XRenderFreePicture (dpy, dst); |
392 |
} |
393 |
|
394 |
void |
395 |
rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a) |
396 |
{ |
397 |
if (r < 0 || g < 0 || b < 0 || a < 0) |
398 |
rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); |
399 |
|
400 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
401 |
img->alloc (); |
402 |
|
403 |
{ |
404 |
rxvt_color empty; |
405 |
empty.set (s, rgba (0, 0, 0, 0)); |
406 |
img->fill (empty); |
407 |
} |
408 |
|
409 |
// premultiply (yeah, these are not exact, sue me or fix it) |
410 |
r = (r * (a >> 8)) >> 8; |
411 |
g = (g * (a >> 8)) >> 8; |
412 |
b = (b * (a >> 8)) >> 8; |
413 |
|
414 |
Display *dpy = s->display->dpy; |
415 |
|
416 |
Picture src = src_picture (); |
417 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
418 |
Picture mul = create_xrender_mask (dpy, pm, True, True); |
419 |
|
420 |
//TODO: this operator does not yet implement some useful contrast |
421 |
while (r | g | b | a) |
422 |
{ |
423 |
unsigned short xr, xg, xb, xa; |
424 |
XRenderColor mask_c; |
425 |
|
426 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
427 |
{ |
428 |
XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1); |
429 |
XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h); |
430 |
} |
431 |
} |
432 |
|
433 |
XRenderFreePicture (dpy, mul); |
434 |
XRenderFreePicture (dpy, dst); |
435 |
XRenderFreePicture (dpy, src); |
436 |
|
437 |
::swap (img->ref, ref); |
438 |
::swap (img->pm , pm ); |
439 |
|
440 |
delete img; |
441 |
} |
442 |
|
443 |
rxvt_img * |
444 |
rxvt_img::clone () |
445 |
{ |
446 |
return new rxvt_img (*this); |
447 |
} |
448 |
|
449 |
static XRenderPictFormat * |
450 |
find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
451 |
{ |
452 |
if (format->direct.alphaMask) |
453 |
return format; // already has alpha |
454 |
|
455 |
// try to find a suitable alpha format, one bit alpha is enough for our purposes |
456 |
if (format->type == PictTypeDirect) |
457 |
for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
458 |
if (f->direct.alphaMask |
459 |
&& f->type == PictTypeDirect |
460 |
&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
461 |
&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
462 |
&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
463 |
return f; |
464 |
|
465 |
// should be a very good fallback |
466 |
return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
467 |
} |
468 |
|
469 |
rxvt_img * |
470 |
rxvt_img::reify () |
471 |
{ |
472 |
if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
473 |
return clone (); |
474 |
|
475 |
Display *dpy = s->display->dpy; |
476 |
|
477 |
// add an alpha channel if... |
478 |
bool alpha = !format->direct.alphaMask // pixmap has none yet |
479 |
&& (x || y) // we need one because of non-zero offset |
480 |
&& repeat == RepeatNone; // and we have no good pixels to fill with |
481 |
|
482 |
rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
483 |
img->alloc (); |
484 |
|
485 |
Picture src = src_picture (); |
486 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
487 |
|
488 |
if (alpha) |
489 |
{ |
490 |
XRenderColor rc = { 0, 0, 0, 0 }; |
491 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
492 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h); |
493 |
} |
494 |
else |
495 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); |
496 |
|
497 |
XRenderFreePicture (dpy, src); |
498 |
XRenderFreePicture (dpy, dst); |
499 |
|
500 |
return img; |
501 |
} |
502 |
|
503 |
rxvt_img * |
504 |
rxvt_img::sub_rect (int x, int y, int width, int height) |
505 |
{ |
506 |
rxvt_img *img = clone (); |
507 |
|
508 |
img->x += x; |
509 |
img->y += y; |
510 |
|
511 |
if (w != width || h != height) |
512 |
{ |
513 |
img->w = width; |
514 |
img->h = height; |
515 |
|
516 |
rxvt_img *img2 = img->reify (); |
517 |
delete img; |
518 |
img = img2; |
519 |
} |
520 |
|
521 |
return img; |
522 |
} |
523 |
|
524 |
static void |
525 |
mat_invert (double mat[3][3], double (&inv)[3][3]) |
526 |
{ |
527 |
double s0 = mat [2][2] * mat [1][1] - mat [2][1] * mat [1][2]; |
528 |
double s1 = mat [2][1] * mat [0][2] - mat [2][2] * mat [0][1]; |
529 |
double s2 = mat [1][2] * mat [0][1] - mat [1][1] * mat [0][2]; |
530 |
|
531 |
double invdet = 1. / (mat [0][0] * s0 + mat [1][0] * s1 + mat [2][0] * s2); |
532 |
|
533 |
inv [0][0] = invdet * s0; |
534 |
inv [0][1] = invdet * s1; |
535 |
inv [0][2] = invdet * s2; |
536 |
|
537 |
inv [1][0] = invdet * (mat [2][0] * mat [1][2] - mat [2][2] * mat [1][0]); |
538 |
inv [1][1] = invdet * (mat [2][2] * mat [0][0] - mat [2][0] * mat [0][2]); |
539 |
inv [1][2] = invdet * (mat [1][0] * mat [0][2] - mat [1][2] * mat [0][0]); |
540 |
|
541 |
inv [2][0] = invdet * (mat [2][1] * mat [1][0] - mat [2][0] * mat [1][1]); |
542 |
inv [2][1] = invdet * (mat [2][0] * mat [0][1] - mat [2][1] * mat [0][0]); |
543 |
inv [2][2] = invdet * (mat [1][1] * mat [0][0] - mat [1][0] * mat [0][1]); |
544 |
} |
545 |
|
546 |
static double |
547 |
mat_apply (double mat[3][3], int i, double x, double y) |
548 |
{ |
549 |
double v = mat [i][0] * x + mat [i][1] * y + mat [i][2]; |
550 |
double w = mat [2][0] * x + mat [2][1] * y + mat [2][2]; |
551 |
|
552 |
return v * (1. / w); |
553 |
} |
554 |
|
555 |
rxvt_img * |
556 |
rxvt_img::transform (double matrix[3][3]) |
557 |
{ |
558 |
// find new offset |
559 |
int ox = mat_apply (matrix, 0, x, y); |
560 |
int oy = mat_apply (matrix, 1, x, y); |
561 |
|
562 |
// calculate new pixel bounding box coordinates |
563 |
double rmin[2], rmax[2]; |
564 |
|
565 |
for (int i = 0; i < 2; ++i) |
566 |
{ |
567 |
double v; |
568 |
v = mat_apply (matrix, i, 0, 0); rmin [i] = rmax [i] = v; |
569 |
v = mat_apply (matrix, i, w, 0); min_it (rmin [i], v); max_it (rmax [i], v); |
570 |
v = mat_apply (matrix, i, 0, h); min_it (rmin [i], v); max_it (rmax [i], v); |
571 |
v = mat_apply (matrix, i, w, h); min_it (rmin [i], v); max_it (rmax [i], v); |
572 |
} |
573 |
|
574 |
int dx = floor (rmin [0]); |
575 |
int dy = floor (rmin [1]); |
576 |
|
577 |
int new_width = ceil (rmax [0] - dx); |
578 |
int new_height = ceil (rmax [1] - dy); |
579 |
|
580 |
double inv[3][3]; |
581 |
mat_invert (matrix, inv); |
582 |
|
583 |
rxvt_img *img = new rxvt_img (s, format, ox - dx, oy - dy, new_width, new_height, repeat); |
584 |
img->alloc (); |
585 |
|
586 |
Display *dpy = s->display->dpy; |
587 |
Picture src = src_picture (); |
588 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
589 |
|
590 |
XTransform xfrm; |
591 |
|
592 |
for (int i = 0; i < 3; ++i) |
593 |
for (int j = 0; j < 3; ++j) |
594 |
xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
595 |
|
596 |
XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
597 |
XRenderSetPictureTransform (dpy, src, &xfrm); |
598 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, dx, dy, 0, 0, 0, 0, new_width, new_height); |
599 |
|
600 |
XRenderFreePicture (dpy, src); |
601 |
XRenderFreePicture (dpy, dst); |
602 |
|
603 |
return img; |
604 |
} |
605 |
|
606 |
rxvt_img * |
607 |
rxvt_img::scale (int new_width, int new_height) |
608 |
{ |
609 |
if (w == new_width && h == new_height) |
610 |
return clone (); |
611 |
|
612 |
double matrix[3][3] = { |
613 |
{ new_width / (double)w, 0, 0 }, |
614 |
{ 0, new_height / (double)h, 0 }, |
615 |
{ 0, 0, 1 } |
616 |
}; |
617 |
|
618 |
int old_repeat_mode = repeat; |
619 |
repeat = RepeatPad; // not right, but xrender can't properly scale it seems |
620 |
|
621 |
rxvt_img *img = transform (matrix); |
622 |
|
623 |
repeat = old_repeat_mode; |
624 |
img->repeat = repeat; |
625 |
|
626 |
return img; |
627 |
} |
628 |
|
629 |
rxvt_img * |
630 |
rxvt_img::rotate (int cx, int cy, double phi) |
631 |
{ |
632 |
double s = sin (phi); |
633 |
double c = cos (phi); |
634 |
|
635 |
double matrix[3][3] = { |
636 |
//{ c, -s, cx - c * cx + s * cy }, |
637 |
//{ s, c, cy - s * cx - c * cy }, |
638 |
//{ 0, 0, 1 } |
639 |
{ c, -s, 0 }, |
640 |
{ s, c, 0 }, |
641 |
{ 0, 0, 1 } |
642 |
}; |
643 |
|
644 |
move (-cx, -cy); |
645 |
rxvt_img *img = transform (matrix); |
646 |
move ( cx, cy); |
647 |
img->move (cx, cy); |
648 |
|
649 |
return img; |
650 |
} |
651 |
|
652 |
rxvt_img * |
653 |
rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg) |
654 |
{ |
655 |
if (new_format == format) |
656 |
return clone (); |
657 |
|
658 |
rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
659 |
img->alloc (); |
660 |
|
661 |
Display *dpy = s->display->dpy; |
662 |
Picture src = src_picture (); |
663 |
Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
664 |
int op = PictOpSrc; |
665 |
|
666 |
if (format->direct.alphaMask && !new_format->direct.alphaMask) |
667 |
{ |
668 |
// does it have to be that complicated |
669 |
rgba c; |
670 |
bg.get (c); |
671 |
|
672 |
XRenderColor rc = { c.r, c.g, c.b, 0xffff }; |
673 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
674 |
|
675 |
op = PictOpOver; |
676 |
} |
677 |
|
678 |
XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
679 |
|
680 |
XRenderFreePicture (dpy, src); |
681 |
XRenderFreePicture (dpy, dst); |
682 |
|
683 |
return img; |
684 |
} |
685 |
|
686 |
rxvt_img * |
687 |
rxvt_img::blend (rxvt_img *img, double factor) |
688 |
{ |
689 |
rxvt_img *img2 = clone (); |
690 |
Display *dpy = s->display->dpy; |
691 |
Picture src = img->src_picture (); |
692 |
Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
693 |
Picture mask = create_xrender_mask (dpy, img->pm, False, False); |
694 |
|
695 |
XRenderColor mask_c; |
696 |
|
697 |
mask_c.alpha = float_to_component (factor); |
698 |
mask_c.red = |
699 |
mask_c.green = |
700 |
mask_c.blue = 0; |
701 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
702 |
|
703 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
704 |
|
705 |
XRenderFreePicture (dpy, src); |
706 |
XRenderFreePicture (dpy, dst); |
707 |
XRenderFreePicture (dpy, mask); |
708 |
|
709 |
return img2; |
710 |
} |
711 |
|
712 |
#endif |
713 |
|