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++; |
116 |
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 |
|
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 |
|
173 |
# endif |
174 |
|
175 |
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 |
|
187 |
rxvt_img::~rxvt_img () |
188 |
{ |
189 |
destroy (); |
190 |
} |
191 |
|
192 |
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; |
205 |
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 rgba &c) |
230 |
{ |
231 |
XRenderColor rc = { c.r, c.g, c.b, c.a }; |
232 |
|
233 |
Display *dpy = s->display->dpy; |
234 |
Picture src = src_picture (); |
235 |
XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h); |
236 |
XRenderFreePicture (dpy, src); |
237 |
} |
238 |
|
239 |
static void |
240 |
get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) |
241 |
{ |
242 |
double sigma = radius / 2.0; |
243 |
double scale = sqrt (2.0 * M_PI) * sigma; |
244 |
double sum = 0.0; |
245 |
|
246 |
for (int i = 0; i < width; i++) |
247 |
{ |
248 |
double x = i - width / 2; |
249 |
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
250 |
sum += kernel[i]; |
251 |
} |
252 |
|
253 |
params[0] = XDoubleToFixed (width); |
254 |
params[1] = XDoubleToFixed (1); |
255 |
|
256 |
for (int i = 0; i < width; i++) |
257 |
params[i+2] = XDoubleToFixed (kernel[i] / sum); |
258 |
} |
259 |
|
260 |
rxvt_img * |
261 |
rxvt_img::blur (int rh, int rv) |
262 |
{ |
263 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
264 |
return clone (); |
265 |
|
266 |
Display *dpy = s->display->dpy; |
267 |
int size = max (rh, rv) * 2 + 1; |
268 |
double *kernel = (double *)malloc (size * sizeof (double)); |
269 |
XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
270 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
271 |
img->alloc (); |
272 |
|
273 |
XRenderPictureAttributes pa; |
274 |
pa.repeat = RepeatPad; |
275 |
Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
276 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
277 |
|
278 |
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
279 |
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
280 |
XFreePixmap (dpy, tmp_pm); |
281 |
|
282 |
if (kernel && params) |
283 |
{ |
284 |
size = rh * 2 + 1; |
285 |
get_gaussian_kernel (rh, size, kernel, params); |
286 |
|
287 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
288 |
XRenderComposite (dpy, |
289 |
PictOpSrc, |
290 |
src, |
291 |
None, |
292 |
tmp, |
293 |
0, 0, |
294 |
0, 0, |
295 |
0, 0, |
296 |
w, h); |
297 |
|
298 |
size = rv * 2 + 1; |
299 |
get_gaussian_kernel (rv, size, kernel, params); |
300 |
::swap (params[0], params[1]); |
301 |
|
302 |
XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2); |
303 |
XRenderComposite (dpy, |
304 |
PictOpSrc, |
305 |
tmp, |
306 |
None, |
307 |
dst, |
308 |
0, 0, |
309 |
0, 0, |
310 |
0, 0, |
311 |
w, h); |
312 |
} |
313 |
|
314 |
free (kernel); |
315 |
free (params); |
316 |
|
317 |
XRenderFreePicture (dpy, src); |
318 |
XRenderFreePicture (dpy, dst); |
319 |
XRenderFreePicture (dpy, tmp); |
320 |
|
321 |
return img; |
322 |
} |
323 |
|
324 |
static Picture |
325 |
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha) |
326 |
{ |
327 |
Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
328 |
|
329 |
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
330 |
XRenderPictureAttributes pa; |
331 |
pa.repeat = RepeatNormal; |
332 |
pa.component_alpha = component_alpha; |
333 |
Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); |
334 |
|
335 |
XFreePixmap (dpy, pixmap); |
336 |
|
337 |
return mask; |
338 |
} |
339 |
|
340 |
static void |
341 |
extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc) |
342 |
{ |
343 |
int32_t x = clamp (c, cl0, cl1); |
344 |
c -= x; |
345 |
xc = x; |
346 |
} |
347 |
|
348 |
static bool |
349 |
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) |
350 |
{ |
351 |
extract (cl0, cl1, r, xr); |
352 |
extract (cl0, cl1, g, xg); |
353 |
extract (cl0, cl1, b, xb); |
354 |
extract (cl0, cl1, a, xa); |
355 |
|
356 |
return xr | xg | xb | xa; |
357 |
} |
358 |
|
359 |
void |
360 |
rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) |
361 |
{ |
362 |
unshare (); |
363 |
|
364 |
Display *dpy = s->display->dpy; |
365 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
366 |
|
367 |
// loop should not be needed for brightness, as only -1..1 makes sense |
368 |
//while (r | g | b | a) |
369 |
{ |
370 |
unsigned short xr, xg, xb, xa; |
371 |
XRenderColor mask_c; |
372 |
|
373 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
374 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
375 |
|
376 |
if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
377 |
{ |
378 |
XRenderColor mask_w = { 65535, 65535, 65535, 65535 }; |
379 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
380 |
mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing |
381 |
mask_c.green = -mask_c.green; |
382 |
mask_c.blue = -mask_c.blue; |
383 |
mask_c.alpha = -mask_c.alpha; |
384 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
385 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
386 |
} |
387 |
} |
388 |
|
389 |
XRenderFreePicture (dpy, dst); |
390 |
} |
391 |
|
392 |
void |
393 |
rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a) |
394 |
{ |
395 |
if (r < 0 || g < 0 || b < 0 || a < 0) |
396 |
rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); |
397 |
|
398 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
399 |
img->alloc (); |
400 |
img->fill (rgba (0, 0, 0, 0)); |
401 |
|
402 |
// premultiply (yeah, these are not exact, sue me or fix it) |
403 |
r = (r * (a >> 8)) >> 8; |
404 |
g = (g * (a >> 8)) >> 8; |
405 |
b = (b * (a >> 8)) >> 8; |
406 |
|
407 |
Display *dpy = s->display->dpy; |
408 |
|
409 |
Picture src = src_picture (); |
410 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
411 |
Picture mul = create_xrender_mask (dpy, pm, True, True); |
412 |
|
413 |
//TODO: this operator does not yet implement some useful contrast |
414 |
while (r | g | b | a) |
415 |
{ |
416 |
unsigned short xr, xg, xb, xa; |
417 |
XRenderColor mask_c; |
418 |
|
419 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
420 |
{ |
421 |
XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1); |
422 |
XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h); |
423 |
} |
424 |
} |
425 |
|
426 |
XRenderFreePicture (dpy, mul); |
427 |
XRenderFreePicture (dpy, dst); |
428 |
XRenderFreePicture (dpy, src); |
429 |
|
430 |
::swap (img->ref, ref); |
431 |
::swap (img->pm , pm ); |
432 |
|
433 |
delete img; |
434 |
} |
435 |
|
436 |
rxvt_img * |
437 |
rxvt_img::clone () |
438 |
{ |
439 |
return new rxvt_img (*this); |
440 |
} |
441 |
|
442 |
static XRenderPictFormat * |
443 |
find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
444 |
{ |
445 |
if (format->direct.alphaMask) |
446 |
return format; // already has alpha |
447 |
|
448 |
// try to find a suitable alpha format, one bit alpha is enough for our purposes |
449 |
if (format->type == PictTypeDirect) |
450 |
for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
451 |
if (f->direct.alphaMask |
452 |
&& f->type == PictTypeDirect |
453 |
&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
454 |
&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
455 |
&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
456 |
return f; |
457 |
|
458 |
// should be a very good fallback |
459 |
return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
460 |
} |
461 |
|
462 |
rxvt_img * |
463 |
rxvt_img::reify () |
464 |
{ |
465 |
if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
466 |
return clone (); |
467 |
|
468 |
Display *dpy = s->display->dpy; |
469 |
|
470 |
// add an alpha channel if... |
471 |
bool alpha = !format->direct.alphaMask // pixmap has none yet |
472 |
&& (x || y) // we need one because of non-zero offset |
473 |
&& repeat == RepeatNone; // and we have no good pixels to fill with |
474 |
|
475 |
rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
476 |
img->alloc (); |
477 |
|
478 |
Picture src = src_picture (); |
479 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
480 |
|
481 |
if (alpha) |
482 |
{ |
483 |
XRenderColor rc = { 0, 0, 0, 0 }; |
484 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
485 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h); |
486 |
} |
487 |
else |
488 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); |
489 |
|
490 |
XRenderFreePicture (dpy, src); |
491 |
XRenderFreePicture (dpy, dst); |
492 |
|
493 |
return img; |
494 |
} |
495 |
|
496 |
rxvt_img * |
497 |
rxvt_img::sub_rect (int x, int y, int width, int height) |
498 |
{ |
499 |
rxvt_img *img = clone (); |
500 |
|
501 |
img->x += x; |
502 |
img->y += y; |
503 |
|
504 |
if (w != width || h != height) |
505 |
{ |
506 |
img->w = width; |
507 |
img->h = height; |
508 |
|
509 |
rxvt_img *img2 = img->reify (); |
510 |
delete img; |
511 |
img = img2; |
512 |
} |
513 |
|
514 |
return img; |
515 |
} |
516 |
|
517 |
static void |
518 |
mat_invert (double mat[3][3], double (&inv)[3][3]) |
519 |
{ |
520 |
double s0 = mat [2][2] * mat [1][1] - mat [2][1] * mat [1][2]; |
521 |
double s1 = mat [2][1] * mat [0][2] - mat [2][2] * mat [0][1]; |
522 |
double s2 = mat [1][2] * mat [0][1] - mat [1][1] * mat [0][2]; |
523 |
|
524 |
double invdet = 1. / (mat [0][0] * s0 + mat [1][0] * s1 + mat [2][0] * s2); |
525 |
|
526 |
inv [0][0] = invdet * s0; |
527 |
inv [0][1] = invdet * s1; |
528 |
inv [0][2] = invdet * s2; |
529 |
|
530 |
inv [1][0] = invdet * (mat [2][0] * mat [1][2] - mat [2][2] * mat [1][0]); |
531 |
inv [1][1] = invdet * (mat [2][2] * mat [0][0] - mat [2][0] * mat [0][2]); |
532 |
inv [1][2] = invdet * (mat [1][0] * mat [0][2] - mat [1][2] * mat [0][0]); |
533 |
|
534 |
inv [2][0] = invdet * (mat [2][1] * mat [1][0] - mat [2][0] * mat [1][1]); |
535 |
inv [2][1] = invdet * (mat [2][0] * mat [0][1] - mat [2][1] * mat [0][0]); |
536 |
inv [2][2] = invdet * (mat [1][1] * mat [0][0] - mat [1][0] * mat [0][1]); |
537 |
} |
538 |
|
539 |
static double |
540 |
mat_apply (double mat[3][3], int i, double x, double y) |
541 |
{ |
542 |
double v = mat [i][0] * x + mat [i][1] * y + mat [i][2]; |
543 |
double w = mat [2][0] * x + mat [2][1] * y + mat [2][2]; |
544 |
|
545 |
return v * (1. / w); |
546 |
} |
547 |
|
548 |
rxvt_img * |
549 |
rxvt_img::transform (double matrix[3][3]) |
550 |
{ |
551 |
// find new offset |
552 |
int ox = mat_apply (matrix, 0, x, y); |
553 |
int oy = mat_apply (matrix, 1, x, y); |
554 |
|
555 |
// calculate new pixel bounding box coordinates |
556 |
double d [2], rmin[2], rmax[2]; |
557 |
|
558 |
for (int i = 0; i < 2; ++i) |
559 |
{ |
560 |
double v; |
561 |
v = mat_apply (matrix, i, 0, 0); rmin [i] = rmax [i] = v; d [i] = v; |
562 |
v = mat_apply (matrix, i, w, 0); min_it (rmin [i], v); max_it (rmax [i], v); |
563 |
v = mat_apply (matrix, i, 0, h); min_it (rmin [i], v); max_it (rmax [i], v); |
564 |
v = mat_apply (matrix, i, w, h); min_it (rmin [i], v); max_it (rmax [i], v); |
565 |
} |
566 |
|
567 |
int dx = floor (rmin [0]); |
568 |
int dy = floor (rmin [1]); |
569 |
|
570 |
int new_width = ceil (rmax [0] - dx); |
571 |
int new_height = ceil (rmax [1] - dy); |
572 |
|
573 |
double inv[3][3]; |
574 |
mat_invert (matrix, inv); |
575 |
|
576 |
rxvt_img *img = new rxvt_img (s, format, ox - dx - d [0], oy - dy - d [1], new_width, new_height, repeat); |
577 |
img->alloc (); |
578 |
|
579 |
Display *dpy = s->display->dpy; |
580 |
Picture src = src_picture (); |
581 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
582 |
|
583 |
XTransform xfrm; |
584 |
|
585 |
for (int i = 0; i < 3; ++i) |
586 |
for (int j = 0; j < 3; ++j) |
587 |
xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
588 |
|
589 |
XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
590 |
XRenderSetPictureTransform (dpy, src, &xfrm); |
591 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, dx, dy, 0, 0, 0, 0, new_width, new_height); |
592 |
|
593 |
XRenderFreePicture (dpy, src); |
594 |
XRenderFreePicture (dpy, dst); |
595 |
|
596 |
return img; |
597 |
} |
598 |
|
599 |
rxvt_img * |
600 |
rxvt_img::scale (int new_width, int new_height) |
601 |
{ |
602 |
if (w == new_width && h == new_height) |
603 |
return clone (); |
604 |
|
605 |
double matrix[3][3] = { |
606 |
{ new_width / (double)w, 0, 0 }, |
607 |
{ 0, new_height / (double)h, 0 }, |
608 |
{ 0, 0, 1 } |
609 |
}; |
610 |
|
611 |
int old_repeat_mode = repeat; |
612 |
repeat = RepeatPad; // not right, but xrender can't properly scale it seems |
613 |
|
614 |
rxvt_img *img = transform (matrix); |
615 |
|
616 |
repeat = old_repeat_mode; |
617 |
img->repeat = repeat; |
618 |
|
619 |
return img; |
620 |
} |
621 |
|
622 |
rxvt_img * |
623 |
rxvt_img::rotate (int cx, int cy, double phi) |
624 |
{ |
625 |
double s = sin (phi); |
626 |
double c = cos (phi); |
627 |
|
628 |
double matrix[3][3] = { |
629 |
{ c, -s, cx - c * cx + s * cy }, |
630 |
{ s, c, cy - s * cx - c * cy }, |
631 |
{ 0, 0, 1 } |
632 |
//{ c, -s, 0 }, |
633 |
//{ s, c, 0 }, |
634 |
//{ 0, 0, 1 } |
635 |
}; |
636 |
|
637 |
//move (-cx, -cy); |
638 |
rxvt_img *img = transform (matrix); |
639 |
//move ( cx, cy); |
640 |
//img->move (cx, cy); |
641 |
|
642 |
return img; |
643 |
} |
644 |
|
645 |
rxvt_img * |
646 |
rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg) |
647 |
{ |
648 |
if (new_format == format) |
649 |
return clone (); |
650 |
|
651 |
rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
652 |
img->alloc (); |
653 |
|
654 |
Display *dpy = s->display->dpy; |
655 |
Picture src = src_picture (); |
656 |
Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
657 |
int op = PictOpSrc; |
658 |
|
659 |
if (format->direct.alphaMask && !new_format->direct.alphaMask) |
660 |
{ |
661 |
// does it have to be that complicated |
662 |
XRenderColor rc = { bg.r, bg.g, bg.b, bg.a }; |
663 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
664 |
|
665 |
op = PictOpOver; |
666 |
} |
667 |
|
668 |
XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
669 |
|
670 |
XRenderFreePicture (dpy, src); |
671 |
XRenderFreePicture (dpy, dst); |
672 |
|
673 |
return img; |
674 |
} |
675 |
|
676 |
rxvt_img * |
677 |
rxvt_img::blend (rxvt_img *img, double factor) |
678 |
{ |
679 |
rxvt_img *img2 = clone (); |
680 |
Display *dpy = s->display->dpy; |
681 |
Picture src = img->src_picture (); |
682 |
Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
683 |
Picture mask = create_xrender_mask (dpy, img->pm, False, False); |
684 |
|
685 |
XRenderColor mask_c; |
686 |
|
687 |
mask_c.alpha = float_to_component (factor); |
688 |
mask_c.red = |
689 |
mask_c.green = |
690 |
mask_c.blue = 0; |
691 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
692 |
|
693 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
694 |
|
695 |
XRenderFreePicture (dpy, src); |
696 |
XRenderFreePicture (dpy, dst); |
697 |
XRenderFreePicture (dpy, mask); |
698 |
|
699 |
return img2; |
700 |
} |
701 |
|
702 |
#endif |
703 |
|