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 (const nv *matrix) |
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 |
{ |
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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 |
operator const nv * () const { return &v[0][0]; } |
39 |
operator nv * () { return &v[0][0]; } |
40 |
|
41 |
// quite inefficient, hopefully gcc pulls the w calc out of any loops |
42 |
nv apply1 (int i, nv x, nv y) |
43 |
{ |
44 |
mat3x3 &m = *this; |
45 |
|
46 |
nv v = m[i][0] * x + m[i][1] * y + m[i][2]; |
47 |
nv w = m[2][0] * x + m[2][1] * y + m[2][2]; |
48 |
|
49 |
return v * (1. / w); |
50 |
} |
51 |
|
52 |
static mat3x3 translate (nv x, nv y); |
53 |
static mat3x3 scale (nv s, nv t); |
54 |
static mat3x3 rotate (nv phi); |
55 |
}; |
56 |
|
57 |
mat3x3 |
58 |
mat3x3::invert () |
59 |
{ |
60 |
mat3x3 &m = *this; |
61 |
mat3x3 inv; |
62 |
|
63 |
nv s0 = m[2][2] * m[1][1] - m[2][1] * m[1][2]; |
64 |
nv s1 = m[2][1] * m[0][2] - m[2][2] * m[0][1]; |
65 |
nv s2 = m[1][2] * m[0][1] - m[1][1] * m[0][2]; |
66 |
|
67 |
nv invdet = 1. / (m[0][0] * s0 + m[1][0] * s1 + m[2][0] * s2); |
68 |
|
69 |
inv[0][0] = invdet * s0; |
70 |
inv[0][1] = invdet * s1; |
71 |
inv[0][2] = invdet * s2; |
72 |
|
73 |
inv[1][0] = invdet * (m[2][0] * m[1][2] - m[2][2] * m[1][0]); |
74 |
inv[1][1] = invdet * (m[2][2] * m[0][0] - m[2][0] * m[0][2]); |
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inv[1][2] = invdet * (m[1][0] * m[0][2] - m[1][2] * m[0][0]); |
76 |
|
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inv[2][0] = invdet * (m[2][1] * m[1][0] - m[2][0] * m[1][1]); |
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inv[2][1] = invdet * (m[2][0] * m[0][1] - m[2][1] * m[0][0]); |
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inv[2][2] = invdet * (m[1][1] * m[0][0] - m[1][0] * m[0][1]); |
80 |
|
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return inv; |
82 |
} |
83 |
|
84 |
static mat3x3 |
85 |
operator *(const mat3x3 &a, const mat3x3 &b) |
86 |
{ |
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mat3x3 r; |
88 |
|
89 |
for (int i = 0; i < 3; ++i) |
90 |
for (int j = 0; j < 3; ++j) |
91 |
r[i][j] = a[i][0] * b[0][j] |
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+ a[i][1] * b[1][j] |
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+ a[i][2] * b[2][j]; |
94 |
|
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return r; |
96 |
} |
97 |
|
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mat3x3 |
99 |
mat3x3::translate (nv x, nv y) |
100 |
{ |
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return mat3x3 ( |
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1, 0, x, |
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0, 1, y, |
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0, 0, 1 |
105 |
); |
106 |
} |
107 |
|
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mat3x3 |
109 |
mat3x3::scale (nv s, nv t) |
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{ |
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return mat3x3 ( |
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s, 0, 0, |
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0, t, 0, |
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0, 0, 1 |
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); |
116 |
} |
117 |
|
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// clockwise |
119 |
mat3x3 |
120 |
mat3x3::rotate (nv phi) |
121 |
{ |
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nv s = sin (phi); |
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nv c = cos (phi); |
124 |
|
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return mat3x3 ( |
126 |
c, -s, 0, |
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s, c, 0, |
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0, 0, 1 |
129 |
); |
130 |
} |
131 |
|
132 |
} |
133 |
|
134 |
#if 0 |
135 |
struct pict |
136 |
{ |
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Display *dpy; |
138 |
Picture pic; |
139 |
|
140 |
operator Picture () const |
141 |
{ |
142 |
return pic; |
143 |
} |
144 |
|
145 |
pict () |
146 |
: pic (0) |
147 |
{ |
148 |
} |
149 |
|
150 |
pict (rxvt_img *img, XRenderPictFormat *format = 0) |
151 |
: dpy (img->s->display->dpy) |
152 |
{ |
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XRenderPictureAttributes pa; |
154 |
pa.repeat = img->repeat; |
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pic = XRenderCreatePicture (dpy, img->pm, format ? format : img->format, CPRepeat, &pa); |
156 |
} |
157 |
|
158 |
~pict () |
159 |
{ |
160 |
if (pic) |
161 |
XRenderFreePicture (dpy, pic); |
162 |
} |
163 |
}; |
164 |
#endif |
165 |
|
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static XRenderPictFormat * |
167 |
find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
168 |
{ |
169 |
if (format->direct.alphaMask) |
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return format; // already has alpha |
171 |
|
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// try to find a suitable alpha format, one bit alpha is enough for our purposes |
173 |
if (format->type == PictTypeDirect) |
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for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
175 |
if (f->direct.alphaMask |
176 |
&& f->type == PictTypeDirect |
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&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
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&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
179 |
&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
180 |
return f; |
181 |
|
182 |
// should be a very good fallback |
183 |
return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
184 |
} |
185 |
|
186 |
rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat) |
187 |
: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat), |
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pm(0), ref(0) |
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{ |
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} |
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|
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rxvt_img::rxvt_img (const rxvt_img &img) |
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: 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) |
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{ |
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++ref->cnt; |
196 |
} |
197 |
|
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rxvt_img * |
199 |
rxvt_img::new_from_root (rxvt_screen *s) |
200 |
{ |
201 |
Display *dpy = s->display->dpy; |
202 |
unsigned int root_pm_w, root_pm_h; |
203 |
Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]); |
204 |
if (root_pixmap == None) |
205 |
root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]); |
206 |
|
207 |
if (root_pixmap == None) |
208 |
return 0; |
209 |
|
210 |
Window wdummy; |
211 |
int idummy; |
212 |
unsigned int udummy; |
213 |
|
214 |
if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy)) |
215 |
return 0; |
216 |
|
217 |
rxvt_img *img = new rxvt_img ( |
218 |
s, |
219 |
XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)), |
220 |
0, |
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0, |
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root_pm_w, |
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root_pm_h |
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); |
225 |
|
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img->pm = root_pixmap; |
227 |
img->ref = new pixref (root_pm_w, root_pm_h); |
228 |
img->ref->ours = false; |
229 |
|
230 |
return img; |
231 |
} |
232 |
|
233 |
# if HAVE_PIXBUF |
234 |
|
235 |
rxvt_img * |
236 |
rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
237 |
{ |
238 |
Display *dpy = s->display->dpy; |
239 |
|
240 |
int width = gdk_pixbuf_get_width (pb); |
241 |
int height = gdk_pixbuf_get_height (pb); |
242 |
|
243 |
if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
244 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
245 |
|
246 |
// since we require rgb24/argb32 formats from xrender we assume |
247 |
// that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
248 |
|
249 |
int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
250 |
|
251 |
XImage xi; |
252 |
|
253 |
xi.width = width; |
254 |
xi.height = height; |
255 |
xi.xoffset = 0; |
256 |
xi.format = ZPixmap; |
257 |
xi.byte_order = ImageByteOrder (dpy); |
258 |
xi.bitmap_unit = 0; //XY only, unused |
259 |
xi.bitmap_bit_order = 0; //XY only, unused |
260 |
xi.bitmap_pad = BitmapPad (dpy); |
261 |
xi.depth = 32; |
262 |
xi.bytes_per_line = 0; |
263 |
xi.bits_per_pixel = 32; //Z only |
264 |
xi.red_mask = 0x00000000; //Z only, unused |
265 |
xi.green_mask = 0x00000000; //Z only, unused |
266 |
xi.blue_mask = 0x00000000; //Z only, unused |
267 |
xi.obdata = 0; // probably unused |
268 |
|
269 |
bool byte_order_mismatch = byte_order != xi.byte_order; |
270 |
|
271 |
if (!XInitImage (&xi)) |
272 |
rxvt_fatal ("unable to initialise ximage, please report.\n"); |
273 |
|
274 |
if (height > INT_MAX / xi.bytes_per_line) |
275 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); |
276 |
|
277 |
xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); |
278 |
|
279 |
int rowstride = gdk_pixbuf_get_rowstride (pb); |
280 |
bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb); |
281 |
unsigned char *row = gdk_pixbuf_get_pixels (pb); |
282 |
|
283 |
char *line = xi.data; |
284 |
|
285 |
for (int y = 0; y < height; y++) |
286 |
{ |
287 |
unsigned char *src = row; |
288 |
uint32_t *dst = (uint32_t *)line; |
289 |
|
290 |
if (!pb_has_alpha) |
291 |
for (int x = 0; x < width; x++) |
292 |
{ |
293 |
uint8_t r = *src++; |
294 |
uint8_t g = *src++; |
295 |
uint8_t b = *src++; |
296 |
|
297 |
uint32_t v = (255 << 24) | (r << 16) | (g << 8) | b; |
298 |
|
299 |
if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) |
300 |
v = ecb_bswap32 (v); |
301 |
|
302 |
*dst++ = v; |
303 |
} |
304 |
else |
305 |
for (int x = 0; x < width; x++) |
306 |
{ |
307 |
uint32_t v = *(uint32_t *)src; src += 4; |
308 |
|
309 |
if (ecb_big_endian ()) |
310 |
v = ecb_bswap32 (v); |
311 |
|
312 |
v = ecb_rotl32 (v, 8); // abgr to bgra |
313 |
|
314 |
if (!byte_order_mismatch) |
315 |
v = ecb_bswap32 (v); |
316 |
|
317 |
*dst++ = v; |
318 |
} |
319 |
|
320 |
row += rowstride; |
321 |
line += xi.bytes_per_line; |
322 |
} |
323 |
|
324 |
rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height); |
325 |
img->alloc (); |
326 |
|
327 |
GC gc = XCreateGC (dpy, img->pm, 0, 0); |
328 |
XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); |
329 |
XFreeGC (dpy, gc); |
330 |
|
331 |
free (xi.data); |
332 |
|
333 |
return img; |
334 |
} |
335 |
|
336 |
rxvt_img * |
337 |
rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
338 |
{ |
339 |
GError *err = 0; |
340 |
GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
341 |
|
342 |
if (!pb) |
343 |
rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
344 |
|
345 |
rxvt_img *img = new_from_pixbuf (s, pb); |
346 |
|
347 |
g_object_unref (pb); |
348 |
|
349 |
return img; |
350 |
} |
351 |
|
352 |
# endif |
353 |
|
354 |
void |
355 |
rxvt_img::destroy () |
356 |
{ |
357 |
if (--ref->cnt) |
358 |
return; |
359 |
|
360 |
if (pm && ref->ours) |
361 |
XFreePixmap (s->display->dpy, pm); |
362 |
|
363 |
delete ref; |
364 |
} |
365 |
|
366 |
rxvt_img::~rxvt_img () |
367 |
{ |
368 |
destroy (); |
369 |
} |
370 |
|
371 |
void |
372 |
rxvt_img::alloc () |
373 |
{ |
374 |
pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
375 |
ref = new pixref (w, h); |
376 |
} |
377 |
|
378 |
Picture |
379 |
rxvt_img::picture () |
380 |
{ |
381 |
Display *dpy = s->display->dpy; |
382 |
|
383 |
XRenderPictureAttributes pa; |
384 |
pa.repeat = repeat; |
385 |
Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
386 |
|
387 |
return pic; |
388 |
} |
389 |
|
390 |
void |
391 |
rxvt_img::unshare () |
392 |
{ |
393 |
if (ref->cnt == 1 && ref->ours) |
394 |
return; |
395 |
|
396 |
Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); |
397 |
GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
398 |
XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); |
399 |
XFreeGC (s->display->dpy, gc); |
400 |
|
401 |
destroy (); |
402 |
|
403 |
pm = pm2; |
404 |
ref = new pixref (ref->w, ref->h); |
405 |
} |
406 |
|
407 |
void |
408 |
rxvt_img::fill (const rgba &c) |
409 |
{ |
410 |
XRenderColor rc = { c.r, c.g, c.b, c.a }; |
411 |
|
412 |
Display *dpy = s->display->dpy; |
413 |
Picture src = picture (); |
414 |
XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h); |
415 |
XRenderFreePicture (dpy, src); |
416 |
} |
417 |
|
418 |
void |
419 |
rxvt_img::add_alpha () |
420 |
{ |
421 |
if (format->direct.alphaMask) |
422 |
return; |
423 |
|
424 |
Display *dpy = s->display->dpy; |
425 |
|
426 |
rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat); |
427 |
img->alloc (); |
428 |
|
429 |
Picture src = picture (); |
430 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
431 |
|
432 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
433 |
|
434 |
XRenderFreePicture (dpy, src); |
435 |
XRenderFreePicture (dpy, dst); |
436 |
|
437 |
::swap (img->ref, ref); |
438 |
::swap (img->pm , pm ); |
439 |
|
440 |
delete img; |
441 |
} |
442 |
|
443 |
static void |
444 |
get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params) |
445 |
{ |
446 |
nv sigma = radius / 2.0; |
447 |
nv scale = sqrt (2.0 * M_PI) * sigma; |
448 |
nv sum = 0.0; |
449 |
|
450 |
for (int i = 0; i < width; i++) |
451 |
{ |
452 |
nv x = i - width / 2; |
453 |
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
454 |
sum += kernel[i]; |
455 |
} |
456 |
|
457 |
params[0] = XDoubleToFixed (width); |
458 |
params[1] = XDoubleToFixed (1); |
459 |
|
460 |
for (int i = 0; i < width; i++) |
461 |
params[i+2] = XDoubleToFixed (kernel[i] / sum); |
462 |
} |
463 |
|
464 |
rxvt_img * |
465 |
rxvt_img::blur (int rh, int rv) |
466 |
{ |
467 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
468 |
return clone (); |
469 |
|
470 |
Display *dpy = s->display->dpy; |
471 |
int size = max (rh, rv) * 2 + 1; |
472 |
nv *kernel = (nv *)malloc (size * sizeof (nv)); |
473 |
XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
474 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
475 |
img->alloc (); |
476 |
|
477 |
XRenderPictureAttributes pa; |
478 |
pa.repeat = RepeatPad; |
479 |
Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
480 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
481 |
|
482 |
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
483 |
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
484 |
XFreePixmap (dpy, tmp_pm); |
485 |
|
486 |
if (kernel && params) |
487 |
{ |
488 |
size = rh * 2 + 1; |
489 |
get_gaussian_kernel (rh, size, kernel, params); |
490 |
|
491 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
492 |
XRenderComposite (dpy, |
493 |
PictOpSrc, |
494 |
src, |
495 |
None, |
496 |
tmp, |
497 |
0, 0, |
498 |
0, 0, |
499 |
0, 0, |
500 |
w, h); |
501 |
|
502 |
size = rv * 2 + 1; |
503 |
get_gaussian_kernel (rv, size, kernel, params); |
504 |
::swap (params[0], params[1]); |
505 |
|
506 |
XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2); |
507 |
XRenderComposite (dpy, |
508 |
PictOpSrc, |
509 |
tmp, |
510 |
None, |
511 |
dst, |
512 |
0, 0, |
513 |
0, 0, |
514 |
0, 0, |
515 |
w, h); |
516 |
} |
517 |
|
518 |
free (kernel); |
519 |
free (params); |
520 |
|
521 |
XRenderFreePicture (dpy, src); |
522 |
XRenderFreePicture (dpy, dst); |
523 |
XRenderFreePicture (dpy, tmp); |
524 |
|
525 |
return img; |
526 |
} |
527 |
|
528 |
static Picture |
529 |
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha) |
530 |
{ |
531 |
Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
532 |
|
533 |
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
534 |
XRenderPictureAttributes pa; |
535 |
pa.repeat = RepeatNormal; |
536 |
pa.component_alpha = component_alpha; |
537 |
Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); |
538 |
|
539 |
XFreePixmap (dpy, pixmap); |
540 |
|
541 |
return mask; |
542 |
} |
543 |
|
544 |
static void |
545 |
extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc) |
546 |
{ |
547 |
int32_t x = clamp (c, cl0, cl1); |
548 |
c -= x; |
549 |
xc = x; |
550 |
} |
551 |
|
552 |
static bool |
553 |
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) |
554 |
{ |
555 |
extract (cl0, cl1, r, xr); |
556 |
extract (cl0, cl1, g, xg); |
557 |
extract (cl0, cl1, b, xb); |
558 |
extract (cl0, cl1, a, xa); |
559 |
|
560 |
return xr | xg | xb | xa; |
561 |
} |
562 |
|
563 |
void |
564 |
rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) |
565 |
{ |
566 |
unshare (); |
567 |
|
568 |
Display *dpy = s->display->dpy; |
569 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
570 |
|
571 |
// loop should not be needed for brightness, as only -1..1 makes sense |
572 |
//while (r | g | b | a) |
573 |
{ |
574 |
unsigned short xr, xg, xb, xa; |
575 |
XRenderColor mask_c; |
576 |
|
577 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
578 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
579 |
|
580 |
if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
581 |
{ |
582 |
XRenderColor mask_w = { 65535, 65535, 65535, 65535 }; |
583 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
584 |
mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing |
585 |
mask_c.green = -mask_c.green; |
586 |
mask_c.blue = -mask_c.blue; |
587 |
mask_c.alpha = -mask_c.alpha; |
588 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
589 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
590 |
} |
591 |
} |
592 |
|
593 |
XRenderFreePicture (dpy, dst); |
594 |
} |
595 |
|
596 |
void |
597 |
rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a) |
598 |
{ |
599 |
if (r < 0 || g < 0 || b < 0 || a < 0) |
600 |
rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); |
601 |
|
602 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
603 |
img->alloc (); |
604 |
img->fill (rgba (0, 0, 0, 0)); |
605 |
|
606 |
// premultiply (yeah, these are not exact, sue me or fix it) |
607 |
r = (r * (a >> 8)) >> 8; |
608 |
g = (g * (a >> 8)) >> 8; |
609 |
b = (b * (a >> 8)) >> 8; |
610 |
|
611 |
Display *dpy = s->display->dpy; |
612 |
|
613 |
Picture src = picture (); |
614 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
615 |
Picture mul = create_xrender_mask (dpy, pm, True, True); |
616 |
|
617 |
//TODO: this operator does not yet implement some useful contrast |
618 |
while (r | g | b | a) |
619 |
{ |
620 |
unsigned short xr, xg, xb, xa; |
621 |
XRenderColor mask_c; |
622 |
|
623 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
624 |
{ |
625 |
XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1); |
626 |
XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h); |
627 |
} |
628 |
} |
629 |
|
630 |
XRenderFreePicture (dpy, mul); |
631 |
XRenderFreePicture (dpy, dst); |
632 |
XRenderFreePicture (dpy, src); |
633 |
|
634 |
::swap (img->ref, ref); |
635 |
::swap (img->pm , pm ); |
636 |
|
637 |
delete img; |
638 |
} |
639 |
|
640 |
void |
641 |
rxvt_img::draw (rxvt_img *img, int op, nv mask) |
642 |
{ |
643 |
unshare (); |
644 |
|
645 |
Display *dpy = s->display->dpy; |
646 |
Picture src = img->picture (); |
647 |
Picture dst = picture (); |
648 |
Picture mask_p = 0; |
649 |
|
650 |
if (mask != 1.) |
651 |
{ |
652 |
mask_p = create_xrender_mask (dpy, img->pm, False, False); |
653 |
XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) }; |
654 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
655 |
} |
656 |
|
657 |
XRenderComposite (dpy, op, src, mask_p, dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h); |
658 |
|
659 |
XRenderFreePicture (dpy, src); |
660 |
XRenderFreePicture (dpy, dst); |
661 |
|
662 |
if (mask_p) |
663 |
XRenderFreePicture (dpy, mask_p); |
664 |
} |
665 |
|
666 |
rxvt_img * |
667 |
rxvt_img::clone () |
668 |
{ |
669 |
return new rxvt_img (*this); |
670 |
} |
671 |
|
672 |
rxvt_img * |
673 |
rxvt_img::reify () |
674 |
{ |
675 |
if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
676 |
return clone (); |
677 |
|
678 |
Display *dpy = s->display->dpy; |
679 |
|
680 |
// add an alpha channel if... |
681 |
bool alpha = !format->direct.alphaMask // pixmap has none yet |
682 |
&& (x || y) // we need one because of non-zero offset |
683 |
&& repeat == RepeatNone; // and we have no good pixels to fill with |
684 |
|
685 |
rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
686 |
img->alloc (); |
687 |
|
688 |
Picture src = picture (); |
689 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
690 |
|
691 |
if (alpha) |
692 |
{ |
693 |
XRenderColor rc = { 0, 0, 0, 0 }; |
694 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
695 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, x, y, ref->w, ref->h); |
696 |
} |
697 |
else |
698 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, -x, -y, 0, 0, 0, 0, w, h); |
699 |
|
700 |
XRenderFreePicture (dpy, src); |
701 |
XRenderFreePicture (dpy, dst); |
702 |
|
703 |
return img; |
704 |
} |
705 |
|
706 |
rxvt_img * |
707 |
rxvt_img::sub_rect (int x, int y, int width, int height) |
708 |
{ |
709 |
rxvt_img *img = clone (); |
710 |
|
711 |
img->x -= x; |
712 |
img->y -= y; |
713 |
|
714 |
if (w != width || h != height) |
715 |
{ |
716 |
img->w = width; |
717 |
img->h = height; |
718 |
|
719 |
rxvt_img *img2 = img->reify (); |
720 |
delete img; |
721 |
img = img2; |
722 |
} |
723 |
|
724 |
return img; |
725 |
} |
726 |
|
727 |
rxvt_img * |
728 |
rxvt_img::transform (const nv matrix[3][3]) |
729 |
{ |
730 |
return transform (mat3x3 (&matrix[0][0])); |
731 |
} |
732 |
|
733 |
rxvt_img * |
734 |
rxvt_img::transform (const nv *matrix) |
735 |
{ |
736 |
mat3x3 m (matrix); |
737 |
|
738 |
// calculate new pixel bounding box coordinates |
739 |
nv r[2], rmin[2], rmax[2]; |
740 |
|
741 |
for (int i = 0; i < 2; ++i) |
742 |
{ |
743 |
nv v; |
744 |
|
745 |
v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v; r [i] = v; |
746 |
v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v); |
747 |
v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
748 |
v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
749 |
} |
750 |
|
751 |
float sx = rmin [0] - x; |
752 |
float sy = rmin [1] - y; |
753 |
|
754 |
// TODO: adjust matrix for subpixel accuracy |
755 |
int nx = floor (rmin [0]); |
756 |
int ny = floor (rmin [1]); |
757 |
|
758 |
int new_width = ceil (rmax [0] - rmin [0]); |
759 |
int new_height = ceil (rmax [1] - rmin [1]); |
760 |
|
761 |
m = mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y); |
762 |
|
763 |
mat3x3 inv = m.invert (); |
764 |
|
765 |
rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat); |
766 |
img->alloc (); |
767 |
|
768 |
Display *dpy = s->display->dpy; |
769 |
Picture src = picture (); |
770 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
771 |
|
772 |
XTransform xfrm; |
773 |
|
774 |
for (int i = 0; i < 3; ++i) |
775 |
for (int j = 0; j < 3; ++j) |
776 |
xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
777 |
|
778 |
XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
779 |
XRenderSetPictureTransform (dpy, src, &xfrm); |
780 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height); |
781 |
|
782 |
XRenderFreePicture (dpy, src); |
783 |
XRenderFreePicture (dpy, dst); |
784 |
|
785 |
return img; |
786 |
} |
787 |
|
788 |
rxvt_img * |
789 |
rxvt_img::scale (int new_width, int new_height) |
790 |
{ |
791 |
if (w == new_width && h == new_height) |
792 |
return clone (); |
793 |
|
794 |
int old_repeat_mode = repeat; |
795 |
repeat = RepeatPad; // not right, but xrender can't properly scale it seems |
796 |
|
797 |
rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h)); |
798 |
|
799 |
repeat = old_repeat_mode; |
800 |
img->repeat = repeat; |
801 |
|
802 |
return img; |
803 |
} |
804 |
|
805 |
rxvt_img * |
806 |
rxvt_img::rotate (int cx, int cy, nv phi) |
807 |
{ |
808 |
#if 0 |
809 |
{ c, -s, cx - c * cx + s * cy }, |
810 |
{ s, c, cy - s * cx - c * cy }, |
811 |
{ 0, 0, 1 } |
812 |
#endif |
813 |
|
814 |
move (-cx, -cy); |
815 |
rxvt_img *img = transform (mat3x3::rotate (phi)); |
816 |
move ( cx, cy); |
817 |
img->move (cx, cy); |
818 |
|
819 |
return img; |
820 |
} |
821 |
|
822 |
rxvt_img * |
823 |
rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg) |
824 |
{ |
825 |
if (new_format == format) |
826 |
return clone (); |
827 |
|
828 |
rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
829 |
img->alloc (); |
830 |
|
831 |
Display *dpy = s->display->dpy; |
832 |
Picture src = picture (); |
833 |
Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
834 |
int op = PictOpSrc; |
835 |
|
836 |
if (format->direct.alphaMask && !new_format->direct.alphaMask) |
837 |
{ |
838 |
// does it have to be that complicated |
839 |
XRenderColor rc = { bg.r, bg.g, bg.b, bg.a }; |
840 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
841 |
|
842 |
op = PictOpOver; |
843 |
} |
844 |
|
845 |
XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
846 |
|
847 |
XRenderFreePicture (dpy, src); |
848 |
XRenderFreePicture (dpy, dst); |
849 |
|
850 |
return img; |
851 |
} |
852 |
|
853 |
rxvt_img * |
854 |
rxvt_img::blend (rxvt_img *img, nv factor) |
855 |
{ |
856 |
rxvt_img *img2 = clone (); |
857 |
Display *dpy = s->display->dpy; |
858 |
Picture src = img->picture (); |
859 |
Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
860 |
Picture mask = create_xrender_mask (dpy, img->pm, False, False); |
861 |
|
862 |
XRenderColor mask_c; |
863 |
|
864 |
mask_c.alpha = float_to_component (factor); |
865 |
mask_c.red = |
866 |
mask_c.green = |
867 |
mask_c.blue = 0; |
868 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
869 |
|
870 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
871 |
|
872 |
XRenderFreePicture (dpy, src); |
873 |
XRenderFreePicture (dpy, dst); |
874 |
XRenderFreePicture (dpy, mask); |
875 |
|
876 |
return img2; |
877 |
} |
878 |
|
879 |
#endif |
880 |
|