1 |
#include <string.h> |
2 |
#include <math.h> |
3 |
#include "../config.h" |
4 |
#include "rxvt.h" |
5 |
|
6 |
#if HAVE_IMG |
7 |
|
8 |
typedef rxvt_img::nv nv; |
9 |
|
10 |
namespace |
11 |
{ |
12 |
|
13 |
struct mat3x3 |
14 |
{ |
15 |
nv v[3][3]; |
16 |
|
17 |
mat3x3 () |
18 |
{ |
19 |
} |
20 |
|
21 |
mat3x3 (nv matrix[3][3]) |
22 |
{ |
23 |
memcpy (v, matrix, sizeof (v)); |
24 |
} |
25 |
|
26 |
mat3x3 (nv v11, nv v12, nv v13, nv v21, nv v22, nv v23, nv v31, nv v32, nv v33) |
27 |
{ |
28 |
v[0][0] = v11; v[0][1] = v12; v[0][2] = v13; |
29 |
v[1][0] = v21; v[1][1] = v22; v[1][2] = v23; |
30 |
v[2][0] = v31; v[2][1] = v32; v[2][2] = v33; |
31 |
} |
32 |
|
33 |
mat3x3 invert (); |
34 |
|
35 |
nv *operator [](int i) { return &v[i][0]; } |
36 |
const nv *operator [](int i) const { return &v[i][0]; } |
37 |
|
38 |
// quite inefficient, hopefully gcc pulls the w calc out of any loops |
39 |
nv apply1 (int i, nv x, nv y) |
40 |
{ |
41 |
mat3x3 &m = *this; |
42 |
|
43 |
nv v = m[i][0] * x + m[i][1] * y + m[i][2]; |
44 |
nv w = m[2][0] * x + m[2][1] * y + m[2][2]; |
45 |
|
46 |
return v * (1. / w); |
47 |
} |
48 |
|
49 |
static mat3x3 translate (nv x, nv y); |
50 |
}; |
51 |
|
52 |
mat3x3 |
53 |
mat3x3::invert () |
54 |
{ |
55 |
mat3x3 &m = *this; |
56 |
mat3x3 inv; |
57 |
|
58 |
nv s0 = m[2][2] * m[1][1] - m[2][1] * m[1][2]; |
59 |
nv s1 = m[2][1] * m[0][2] - m[2][2] * m[0][1]; |
60 |
nv s2 = m[1][2] * m[0][1] - m[1][1] * m[0][2]; |
61 |
|
62 |
nv invdet = 1. / (m[0][0] * s0 + m[1][0] * s1 + m[2][0] * s2); |
63 |
|
64 |
inv[0][0] = invdet * s0; |
65 |
inv[0][1] = invdet * s1; |
66 |
inv[0][2] = invdet * s2; |
67 |
|
68 |
inv[1][0] = invdet * (m[2][0] * m[1][2] - m[2][2] * m[1][0]); |
69 |
inv[1][1] = invdet * (m[2][2] * m[0][0] - m[2][0] * m[0][2]); |
70 |
inv[1][2] = invdet * (m[1][0] * m[0][2] - m[1][2] * m[0][0]); |
71 |
|
72 |
inv[2][0] = invdet * (m[2][1] * m[1][0] - m[2][0] * m[1][1]); |
73 |
inv[2][1] = invdet * (m[2][0] * m[0][1] - m[2][1] * m[0][0]); |
74 |
inv[2][2] = invdet * (m[1][1] * m[0][0] - m[1][0] * m[0][1]); |
75 |
|
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return inv; |
77 |
} |
78 |
|
79 |
static mat3x3 |
80 |
operator *(const mat3x3 &a, const mat3x3 &b) |
81 |
{ |
82 |
mat3x3 r; |
83 |
|
84 |
for (int i = 0; i < 3; ++i) |
85 |
for (int j = 0; j < 3; ++j) |
86 |
r[i][j] = a[i][0] * b[0][j] |
87 |
+ a[i][1] * b[1][j] |
88 |
+ a[i][2] * b[2][j]; |
89 |
|
90 |
return r; |
91 |
} |
92 |
|
93 |
mat3x3 |
94 |
mat3x3::translate (nv x, nv y) |
95 |
{ |
96 |
return mat3x3 ( |
97 |
1, 0, x, |
98 |
0, 1, y, |
99 |
0, 0, 1 |
100 |
); |
101 |
} |
102 |
|
103 |
} |
104 |
|
105 |
#if 0 |
106 |
struct pict |
107 |
{ |
108 |
Display *dpy; |
109 |
Picture pic; |
110 |
|
111 |
operator Picture () const |
112 |
{ |
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return pic; |
114 |
} |
115 |
|
116 |
pict () |
117 |
: pic (0) |
118 |
{ |
119 |
} |
120 |
|
121 |
pict (rxvt_img *img, XRenderPictFormat *format = 0) |
122 |
: dpy (img->s->display->dpy) |
123 |
{ |
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XRenderPictureAttributes pa; |
125 |
pa.repeat = img->repeat; |
126 |
pic = XRenderCreatePicture (dpy, img->pm, format ? format : img->format, CPRepeat, &pa); |
127 |
} |
128 |
|
129 |
~pict () |
130 |
{ |
131 |
if (pic) |
132 |
XRenderFreePicture (dpy, pic); |
133 |
} |
134 |
}; |
135 |
#endif |
136 |
|
137 |
static XRenderPictFormat * |
138 |
find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
139 |
{ |
140 |
if (format->direct.alphaMask) |
141 |
return format; // already has alpha |
142 |
|
143 |
// try to find a suitable alpha format, one bit alpha is enough for our purposes |
144 |
if (format->type == PictTypeDirect) |
145 |
for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
146 |
if (f->direct.alphaMask |
147 |
&& f->type == PictTypeDirect |
148 |
&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
149 |
&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
150 |
&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
151 |
return f; |
152 |
|
153 |
// should be a very good fallback |
154 |
return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
155 |
} |
156 |
|
157 |
rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat) |
158 |
: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat), |
159 |
pm(0), ref(0) |
160 |
{ |
161 |
} |
162 |
|
163 |
rxvt_img::rxvt_img (const rxvt_img &img) |
164 |
: 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) |
165 |
{ |
166 |
++ref->cnt; |
167 |
} |
168 |
|
169 |
rxvt_img * |
170 |
rxvt_img::new_from_root (rxvt_screen *s) |
171 |
{ |
172 |
Display *dpy = s->display->dpy; |
173 |
unsigned int root_pm_w, root_pm_h; |
174 |
Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]); |
175 |
if (root_pixmap == None) |
176 |
root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]); |
177 |
|
178 |
if (root_pixmap == None) |
179 |
return 0; |
180 |
|
181 |
Window wdummy; |
182 |
int idummy; |
183 |
unsigned int udummy; |
184 |
|
185 |
if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy)) |
186 |
return 0; |
187 |
|
188 |
rxvt_img *img = new rxvt_img ( |
189 |
s, |
190 |
XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)), |
191 |
0, |
192 |
0, |
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root_pm_w, |
194 |
root_pm_h |
195 |
); |
196 |
|
197 |
img->pm = root_pixmap; |
198 |
img->ref = new pixref (root_pm_w, root_pm_h); |
199 |
img->ref->ours = false; |
200 |
|
201 |
return img; |
202 |
} |
203 |
|
204 |
# if HAVE_PIXBUF |
205 |
|
206 |
rxvt_img * |
207 |
rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
208 |
{ |
209 |
Display *dpy = s->display->dpy; |
210 |
|
211 |
int width = gdk_pixbuf_get_width (pb); |
212 |
int height = gdk_pixbuf_get_height (pb); |
213 |
|
214 |
if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
215 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
216 |
|
217 |
// since we require rgb24/argb32 formats from xrender we assume |
218 |
// that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
219 |
|
220 |
int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
221 |
|
222 |
XImage xi; |
223 |
|
224 |
xi.width = width; |
225 |
xi.height = height; |
226 |
xi.xoffset = 0; |
227 |
xi.format = ZPixmap; |
228 |
xi.byte_order = ImageByteOrder (dpy); |
229 |
xi.bitmap_unit = 0; //XY only, unused |
230 |
xi.bitmap_bit_order = 0; //XY only, unused |
231 |
xi.bitmap_pad = BitmapPad (dpy); |
232 |
xi.depth = 32; |
233 |
xi.bytes_per_line = 0; |
234 |
xi.bits_per_pixel = 32; //Z only |
235 |
xi.red_mask = 0x00000000; //Z only, unused |
236 |
xi.green_mask = 0x00000000; //Z only, unused |
237 |
xi.blue_mask = 0x00000000; //Z only, unused |
238 |
xi.obdata = 0; // probably unused |
239 |
|
240 |
bool byte_order_mismatch = byte_order != xi.byte_order; |
241 |
|
242 |
if (!XInitImage (&xi)) |
243 |
rxvt_fatal ("unable to initialise ximage, please report.\n"); |
244 |
|
245 |
if (height > INT_MAX / xi.bytes_per_line) |
246 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); |
247 |
|
248 |
xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); |
249 |
|
250 |
int rowstride = gdk_pixbuf_get_rowstride (pb); |
251 |
bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb); |
252 |
unsigned char *row = gdk_pixbuf_get_pixels (pb); |
253 |
|
254 |
char *line = xi.data; |
255 |
|
256 |
for (int y = 0; y < height; y++) |
257 |
{ |
258 |
unsigned char *src = row; |
259 |
uint32_t *dst = (uint32_t *)line; |
260 |
|
261 |
if (!pb_has_alpha) |
262 |
for (int x = 0; x < width; x++) |
263 |
{ |
264 |
uint8_t r = *src++; |
265 |
uint8_t g = *src++; |
266 |
uint8_t b = *src++; |
267 |
|
268 |
uint32_t v = (255 << 24) | (r << 16) | (g << 8) | b; |
269 |
|
270 |
if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) |
271 |
v = ecb_bswap32 (v); |
272 |
|
273 |
*dst++ = v; |
274 |
} |
275 |
else |
276 |
for (int x = 0; x < width; x++) |
277 |
{ |
278 |
uint32_t v = *(uint32_t *)src; src += 4; |
279 |
|
280 |
if (ecb_big_endian ()) |
281 |
v = ecb_bswap32 (v); |
282 |
|
283 |
v = ecb_rotl32 (v, 8); // abgr to bgra |
284 |
|
285 |
if (!byte_order_mismatch) |
286 |
v = ecb_bswap32 (v); |
287 |
|
288 |
*dst++ = v; |
289 |
} |
290 |
|
291 |
row += rowstride; |
292 |
line += xi.bytes_per_line; |
293 |
} |
294 |
|
295 |
rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height); |
296 |
img->alloc (); |
297 |
|
298 |
GC gc = XCreateGC (dpy, img->pm, 0, 0); |
299 |
XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); |
300 |
XFreeGC (dpy, gc); |
301 |
|
302 |
free (xi.data); |
303 |
|
304 |
return img; |
305 |
} |
306 |
|
307 |
rxvt_img * |
308 |
rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
309 |
{ |
310 |
GError *err = 0; |
311 |
GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
312 |
|
313 |
if (!pb) |
314 |
rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
315 |
|
316 |
rxvt_img *img = new_from_pixbuf (s, pb); |
317 |
|
318 |
g_object_unref (pb); |
319 |
|
320 |
return img; |
321 |
} |
322 |
|
323 |
# endif |
324 |
|
325 |
void |
326 |
rxvt_img::destroy () |
327 |
{ |
328 |
if (--ref->cnt) |
329 |
return; |
330 |
|
331 |
if (pm && ref->ours) |
332 |
XFreePixmap (s->display->dpy, pm); |
333 |
|
334 |
delete ref; |
335 |
} |
336 |
|
337 |
rxvt_img::~rxvt_img () |
338 |
{ |
339 |
destroy (); |
340 |
} |
341 |
|
342 |
void |
343 |
rxvt_img::alloc () |
344 |
{ |
345 |
pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
346 |
ref = new pixref (w, h); |
347 |
} |
348 |
|
349 |
Picture |
350 |
rxvt_img::picture () |
351 |
{ |
352 |
Display *dpy = s->display->dpy; |
353 |
|
354 |
XRenderPictureAttributes pa; |
355 |
pa.repeat = repeat; |
356 |
Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
357 |
|
358 |
return pic; |
359 |
} |
360 |
|
361 |
void |
362 |
rxvt_img::unshare () |
363 |
{ |
364 |
if (ref->cnt == 1 && ref->ours) |
365 |
return; |
366 |
|
367 |
Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); |
368 |
GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
369 |
XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); |
370 |
XFreeGC (s->display->dpy, gc); |
371 |
|
372 |
destroy (); |
373 |
|
374 |
pm = pm2; |
375 |
ref = new pixref (ref->w, ref->h); |
376 |
} |
377 |
|
378 |
void |
379 |
rxvt_img::fill (const rgba &c) |
380 |
{ |
381 |
XRenderColor rc = { c.r, c.g, c.b, c.a }; |
382 |
|
383 |
Display *dpy = s->display->dpy; |
384 |
Picture src = picture (); |
385 |
XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h); |
386 |
XRenderFreePicture (dpy, src); |
387 |
} |
388 |
|
389 |
void |
390 |
rxvt_img::add_alpha () |
391 |
{ |
392 |
if (format->direct.alphaMask) |
393 |
return; |
394 |
|
395 |
Display *dpy = s->display->dpy; |
396 |
|
397 |
rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat); |
398 |
img->alloc (); |
399 |
|
400 |
Picture src = picture (); |
401 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
402 |
|
403 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
404 |
|
405 |
XRenderFreePicture (dpy, src); |
406 |
XRenderFreePicture (dpy, dst); |
407 |
|
408 |
::swap (img->ref, ref); |
409 |
::swap (img->pm , pm ); |
410 |
|
411 |
delete img; |
412 |
} |
413 |
|
414 |
static void |
415 |
get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params) |
416 |
{ |
417 |
nv sigma = radius / 2.0; |
418 |
nv scale = sqrt (2.0 * M_PI) * sigma; |
419 |
nv sum = 0.0; |
420 |
|
421 |
for (int i = 0; i < width; i++) |
422 |
{ |
423 |
nv x = i - width / 2; |
424 |
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
425 |
sum += kernel[i]; |
426 |
} |
427 |
|
428 |
params[0] = XDoubleToFixed (width); |
429 |
params[1] = XDoubleToFixed (1); |
430 |
|
431 |
for (int i = 0; i < width; i++) |
432 |
params[i+2] = XDoubleToFixed (kernel[i] / sum); |
433 |
} |
434 |
|
435 |
rxvt_img * |
436 |
rxvt_img::blur (int rh, int rv) |
437 |
{ |
438 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
439 |
return clone (); |
440 |
|
441 |
Display *dpy = s->display->dpy; |
442 |
int size = max (rh, rv) * 2 + 1; |
443 |
nv *kernel = (nv *)malloc (size * sizeof (nv)); |
444 |
XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
445 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
446 |
img->alloc (); |
447 |
|
448 |
XRenderPictureAttributes pa; |
449 |
pa.repeat = RepeatPad; |
450 |
Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
451 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
452 |
|
453 |
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
454 |
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
455 |
XFreePixmap (dpy, tmp_pm); |
456 |
|
457 |
if (kernel && params) |
458 |
{ |
459 |
size = rh * 2 + 1; |
460 |
get_gaussian_kernel (rh, size, kernel, params); |
461 |
|
462 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
463 |
XRenderComposite (dpy, |
464 |
PictOpSrc, |
465 |
src, |
466 |
None, |
467 |
tmp, |
468 |
0, 0, |
469 |
0, 0, |
470 |
0, 0, |
471 |
w, h); |
472 |
|
473 |
size = rv * 2 + 1; |
474 |
get_gaussian_kernel (rv, size, kernel, params); |
475 |
::swap (params[0], params[1]); |
476 |
|
477 |
XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2); |
478 |
XRenderComposite (dpy, |
479 |
PictOpSrc, |
480 |
tmp, |
481 |
None, |
482 |
dst, |
483 |
0, 0, |
484 |
0, 0, |
485 |
0, 0, |
486 |
w, h); |
487 |
} |
488 |
|
489 |
free (kernel); |
490 |
free (params); |
491 |
|
492 |
XRenderFreePicture (dpy, src); |
493 |
XRenderFreePicture (dpy, dst); |
494 |
XRenderFreePicture (dpy, tmp); |
495 |
|
496 |
return img; |
497 |
} |
498 |
|
499 |
static Picture |
500 |
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha) |
501 |
{ |
502 |
Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
503 |
|
504 |
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
505 |
XRenderPictureAttributes pa; |
506 |
pa.repeat = RepeatNormal; |
507 |
pa.component_alpha = component_alpha; |
508 |
Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); |
509 |
|
510 |
XFreePixmap (dpy, pixmap); |
511 |
|
512 |
return mask; |
513 |
} |
514 |
|
515 |
static void |
516 |
extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc) |
517 |
{ |
518 |
int32_t x = clamp (c, cl0, cl1); |
519 |
c -= x; |
520 |
xc = x; |
521 |
} |
522 |
|
523 |
static bool |
524 |
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) |
525 |
{ |
526 |
extract (cl0, cl1, r, xr); |
527 |
extract (cl0, cl1, g, xg); |
528 |
extract (cl0, cl1, b, xb); |
529 |
extract (cl0, cl1, a, xa); |
530 |
|
531 |
return xr | xg | xb | xa; |
532 |
} |
533 |
|
534 |
void |
535 |
rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) |
536 |
{ |
537 |
unshare (); |
538 |
|
539 |
Display *dpy = s->display->dpy; |
540 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
541 |
|
542 |
// loop should not be needed for brightness, as only -1..1 makes sense |
543 |
//while (r | g | b | a) |
544 |
{ |
545 |
unsigned short xr, xg, xb, xa; |
546 |
XRenderColor mask_c; |
547 |
|
548 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
549 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
550 |
|
551 |
if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
552 |
{ |
553 |
XRenderColor mask_w = { 65535, 65535, 65535, 65535 }; |
554 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
555 |
mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing |
556 |
mask_c.green = -mask_c.green; |
557 |
mask_c.blue = -mask_c.blue; |
558 |
mask_c.alpha = -mask_c.alpha; |
559 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
560 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
561 |
} |
562 |
} |
563 |
|
564 |
XRenderFreePicture (dpy, dst); |
565 |
} |
566 |
|
567 |
void |
568 |
rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a) |
569 |
{ |
570 |
if (r < 0 || g < 0 || b < 0 || a < 0) |
571 |
rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); |
572 |
|
573 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
574 |
img->alloc (); |
575 |
img->fill (rgba (0, 0, 0, 0)); |
576 |
|
577 |
// premultiply (yeah, these are not exact, sue me or fix it) |
578 |
r = (r * (a >> 8)) >> 8; |
579 |
g = (g * (a >> 8)) >> 8; |
580 |
b = (b * (a >> 8)) >> 8; |
581 |
|
582 |
Display *dpy = s->display->dpy; |
583 |
|
584 |
Picture src = picture (); |
585 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
586 |
Picture mul = create_xrender_mask (dpy, pm, True, True); |
587 |
|
588 |
//TODO: this operator does not yet implement some useful contrast |
589 |
while (r | g | b | a) |
590 |
{ |
591 |
unsigned short xr, xg, xb, xa; |
592 |
XRenderColor mask_c; |
593 |
|
594 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
595 |
{ |
596 |
XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1); |
597 |
XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h); |
598 |
} |
599 |
} |
600 |
|
601 |
XRenderFreePicture (dpy, mul); |
602 |
XRenderFreePicture (dpy, dst); |
603 |
XRenderFreePicture (dpy, src); |
604 |
|
605 |
::swap (img->ref, ref); |
606 |
::swap (img->pm , pm ); |
607 |
|
608 |
delete img; |
609 |
} |
610 |
|
611 |
void |
612 |
rxvt_img::draw (rxvt_img *img, int op, nv mask) |
613 |
{ |
614 |
unshare (); |
615 |
|
616 |
Display *dpy = s->display->dpy; |
617 |
Picture src = img->picture (); |
618 |
Picture dst = picture (); |
619 |
Picture mask_p = 0; |
620 |
|
621 |
if (mask != 1.) |
622 |
{ |
623 |
mask_p = create_xrender_mask (dpy, img->pm, False, False); |
624 |
XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) }; |
625 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
626 |
} |
627 |
|
628 |
XRenderComposite (dpy, op, src, mask_p, dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h); |
629 |
|
630 |
XRenderFreePicture (dpy, src); |
631 |
XRenderFreePicture (dpy, dst); |
632 |
|
633 |
if (mask_p) |
634 |
XRenderFreePicture (dpy, mask_p); |
635 |
} |
636 |
|
637 |
rxvt_img * |
638 |
rxvt_img::clone () |
639 |
{ |
640 |
return new rxvt_img (*this); |
641 |
} |
642 |
|
643 |
rxvt_img * |
644 |
rxvt_img::reify () |
645 |
{ |
646 |
if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
647 |
return clone (); |
648 |
|
649 |
Display *dpy = s->display->dpy; |
650 |
|
651 |
// add an alpha channel if... |
652 |
bool alpha = !format->direct.alphaMask // pixmap has none yet |
653 |
&& (x || y) // we need one because of non-zero offset |
654 |
&& repeat == RepeatNone; // and we have no good pixels to fill with |
655 |
|
656 |
rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
657 |
img->alloc (); |
658 |
|
659 |
Picture src = picture (); |
660 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
661 |
|
662 |
if (alpha) |
663 |
{ |
664 |
XRenderColor rc = { 0, 0, 0, 0 }; |
665 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
666 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, x, y, ref->w, ref->h); |
667 |
} |
668 |
else |
669 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, -x, -y, 0, 0, 0, 0, w, h); |
670 |
|
671 |
XRenderFreePicture (dpy, src); |
672 |
XRenderFreePicture (dpy, dst); |
673 |
|
674 |
return img; |
675 |
} |
676 |
|
677 |
rxvt_img * |
678 |
rxvt_img::sub_rect (int x, int y, int width, int height) |
679 |
{ |
680 |
rxvt_img *img = clone (); |
681 |
|
682 |
img->x -= x; |
683 |
img->y -= y; |
684 |
|
685 |
if (w != width || h != height) |
686 |
{ |
687 |
img->w = width; |
688 |
img->h = height; |
689 |
|
690 |
rxvt_img *img2 = img->reify (); |
691 |
delete img; |
692 |
img = img2; |
693 |
} |
694 |
|
695 |
return img; |
696 |
} |
697 |
|
698 |
rxvt_img * |
699 |
rxvt_img::transform (nv matrix[3][3]) |
700 |
{ |
701 |
// calculate new pixel bounding box coordinates |
702 |
nv r[2], rmin[2], rmax[2]; |
703 |
|
704 |
mat3x3 m (matrix); |
705 |
|
706 |
for (int i = 0; i < 2; ++i) |
707 |
{ |
708 |
nv v; |
709 |
|
710 |
v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v; r [i] = v; |
711 |
v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v); |
712 |
v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
713 |
v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
714 |
} |
715 |
|
716 |
float sx = rmin [0] - x; |
717 |
float sy = rmin [1] - y; |
718 |
|
719 |
// TODO: adjust matrix for subpixel accuracy |
720 |
int nx = floor (rmin [0]); |
721 |
int ny = floor (rmin [1]); |
722 |
|
723 |
int new_width = ceil (rmax [0] - rmin [0]); |
724 |
int new_height = ceil (rmax [1] - rmin [1]); |
725 |
|
726 |
m = mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y); |
727 |
|
728 |
mat3x3 inv = m.invert (); |
729 |
|
730 |
rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat); |
731 |
img->alloc (); |
732 |
|
733 |
Display *dpy = s->display->dpy; |
734 |
Picture src = picture (); |
735 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
736 |
|
737 |
XTransform xfrm; |
738 |
|
739 |
for (int i = 0; i < 3; ++i) |
740 |
for (int j = 0; j < 3; ++j) |
741 |
xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
742 |
|
743 |
XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
744 |
XRenderSetPictureTransform (dpy, src, &xfrm); |
745 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height); |
746 |
|
747 |
XRenderFreePicture (dpy, src); |
748 |
XRenderFreePicture (dpy, dst); |
749 |
|
750 |
return img; |
751 |
} |
752 |
|
753 |
rxvt_img * |
754 |
rxvt_img::scale (int new_width, int new_height) |
755 |
{ |
756 |
if (w == new_width && h == new_height) |
757 |
return clone (); |
758 |
|
759 |
nv matrix[3][3] = { |
760 |
{ new_width / (nv)w, 0, 0 }, |
761 |
{ 0, new_height / (nv)h, 0 }, |
762 |
{ 0, 0, 1 } |
763 |
}; |
764 |
|
765 |
int old_repeat_mode = repeat; |
766 |
repeat = RepeatPad; // not right, but xrender can't properly scale it seems |
767 |
|
768 |
rxvt_img *img = transform (matrix); |
769 |
|
770 |
repeat = old_repeat_mode; |
771 |
img->repeat = repeat; |
772 |
|
773 |
return img; |
774 |
} |
775 |
|
776 |
rxvt_img * |
777 |
rxvt_img::rotate (int cx, int cy, nv phi) |
778 |
{ |
779 |
nv s = sin (phi); |
780 |
nv c = cos (phi); |
781 |
|
782 |
nv matrix[3][3] = { |
783 |
#if 0 |
784 |
{ c, -s, cx - c * cx + s * cy }, |
785 |
{ s, c, cy - s * cx - c * cy }, |
786 |
{ 0, 0, 1 } |
787 |
#else |
788 |
{ c, -s, 0 }, |
789 |
{ s, c, 0 }, |
790 |
{ 0, 0, 1 } |
791 |
#endif |
792 |
}; |
793 |
|
794 |
move (-cx, -cy); |
795 |
rxvt_img *img = transform (matrix); |
796 |
move ( cx, cy); |
797 |
img->move (cx, cy); |
798 |
|
799 |
return img; |
800 |
} |
801 |
|
802 |
rxvt_img * |
803 |
rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg) |
804 |
{ |
805 |
if (new_format == format) |
806 |
return clone (); |
807 |
|
808 |
rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
809 |
img->alloc (); |
810 |
|
811 |
Display *dpy = s->display->dpy; |
812 |
Picture src = picture (); |
813 |
Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
814 |
int op = PictOpSrc; |
815 |
|
816 |
if (format->direct.alphaMask && !new_format->direct.alphaMask) |
817 |
{ |
818 |
// does it have to be that complicated |
819 |
XRenderColor rc = { bg.r, bg.g, bg.b, bg.a }; |
820 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
821 |
|
822 |
op = PictOpOver; |
823 |
} |
824 |
|
825 |
XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
826 |
|
827 |
XRenderFreePicture (dpy, src); |
828 |
XRenderFreePicture (dpy, dst); |
829 |
|
830 |
return img; |
831 |
} |
832 |
|
833 |
rxvt_img * |
834 |
rxvt_img::blend (rxvt_img *img, nv factor) |
835 |
{ |
836 |
rxvt_img *img2 = clone (); |
837 |
Display *dpy = s->display->dpy; |
838 |
Picture src = img->picture (); |
839 |
Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
840 |
Picture mask = create_xrender_mask (dpy, img->pm, False, False); |
841 |
|
842 |
XRenderColor mask_c; |
843 |
|
844 |
mask_c.alpha = float_to_component (factor); |
845 |
mask_c.red = |
846 |
mask_c.green = |
847 |
mask_c.blue = 0; |
848 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
849 |
|
850 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
851 |
|
852 |
XRenderFreePicture (dpy, src); |
853 |
XRenderFreePicture (dpy, dst); |
854 |
XRenderFreePicture (dpy, mask); |
855 |
|
856 |
return img2; |
857 |
} |
858 |
|
859 |
#endif |
860 |
|