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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.14 by root, Mon Jun 4 15:53:12 2012 UTC vs.
Revision 1.107 by root, Thu May 22 18:54:33 2014 UTC

1/*----------------------------------------------------------------------*
2 * File: rxvtimg.C
3 *----------------------------------------------------------------------*
4 *
5 * All portions of code are copyright by their respective author/s.
6 * Copyright (c) 2012 Marc Lehmann <schmorp@schmorp.de>
7 * Copyright (c) 2012 Emanuele Giaquinta <e.giaquinta@glauco.it>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 *---------------------------------------------------------------------*/
23
24#include <string.h>
1#include <math.h> 25#include <math.h>
2#include "../config.h" 26#include "../config.h"
3#include "rxvt.h" 27#include "rxvt.h"
4 28
5#if HAVE_IMG 29#if HAVE_IMG
6 30
7#define float_to_component(d) ((d) * 65535.99) 31typedef rxvt_img::nv nv;
8 32
33namespace
34{
35 struct mat3x3
36 {
37 nv v[3][3];
38
39 mat3x3 ()
40 {
41 }
42
43 mat3x3 (const nv *matrix)
44 {
45 memcpy (v, matrix, sizeof (v));
46 }
47
48 mat3x3 (nv v11, nv v12, nv v13, nv v21, nv v22, nv v23, nv v31, nv v32, nv v33)
49 {
50 v[0][0] = v11; v[0][1] = v12; v[0][2] = v13;
51 v[1][0] = v21; v[1][1] = v22; v[1][2] = v23;
52 v[2][0] = v31; v[2][1] = v32; v[2][2] = v33;
53 }
54
55 mat3x3 inverse ();
56
57 nv *operator [](int i) { return &v[i][0]; }
58 const nv *operator [](int i) const { return &v[i][0]; }
59
60 operator const nv * () const { return &v[0][0]; }
61 operator nv * () { return &v[0][0]; }
62
63 // quite inefficient, hopefully gcc pulls the w calc out of any loops
64 nv apply1 (int i, nv x, nv y)
65 {
66 mat3x3 &m = *this;
67
68 nv v = m[i][0] * x + m[i][1] * y + m[i][2];
69 nv w = m[2][0] * x + m[2][1] * y + m[2][2];
70
71 return v * (1. / w);
72 }
73
74 static mat3x3 translate (nv x, nv y);
75 static mat3x3 scale (nv s, nv t);
76 static mat3x3 rotate (nv phi);
77 };
78
79 mat3x3
80 mat3x3::inverse ()
81 {
82 mat3x3 &m = *this;
83 mat3x3 inv;
84
85 nv s0 = m[2][2] * m[1][1] - m[2][1] * m[1][2];
86 nv s1 = m[2][1] * m[0][2] - m[2][2] * m[0][1];
87 nv s2 = m[1][2] * m[0][1] - m[1][1] * m[0][2];
88
89 nv invdet = 1. / (m[0][0] * s0 + m[1][0] * s1 + m[2][0] * s2);
90
91 inv[0][0] = invdet * s0;
92 inv[0][1] = invdet * s1;
93 inv[0][2] = invdet * s2;
94
95 inv[1][0] = invdet * (m[2][0] * m[1][2] - m[2][2] * m[1][0]);
96 inv[1][1] = invdet * (m[2][2] * m[0][0] - m[2][0] * m[0][2]);
97 inv[1][2] = invdet * (m[1][0] * m[0][2] - m[1][2] * m[0][0]);
98
99 inv[2][0] = invdet * (m[2][1] * m[1][0] - m[2][0] * m[1][1]);
100 inv[2][1] = invdet * (m[2][0] * m[0][1] - m[2][1] * m[0][0]);
101 inv[2][2] = invdet * (m[1][1] * m[0][0] - m[1][0] * m[0][1]);
102
103 return inv;
104 }
105
106 static mat3x3
107 operator *(const mat3x3 &a, const mat3x3 &b)
108 {
109 mat3x3 r;
110
111 for (int i = 0; i < 3; ++i)
112 for (int j = 0; j < 3; ++j)
113 r[i][j] = a[i][0] * b[0][j]
114 + a[i][1] * b[1][j]
115 + a[i][2] * b[2][j];
116
117 return r;
118 }
119
120 mat3x3
121 mat3x3::translate (nv x, nv y)
122 {
123 return mat3x3 (
124 1, 0, x,
125 0, 1, y,
126 0, 0, 1
127 );
128 }
129
130 mat3x3
131 mat3x3::scale (nv s, nv t)
132 {
133 return mat3x3 (
134 s, 0, 0,
135 0, t, 0,
136 0, 0, 1
137 );
138 }
139
140 // clockwise
141 mat3x3
142 mat3x3::rotate (nv phi)
143 {
144 nv s = sin (phi);
145 nv c = cos (phi);
146
147 return mat3x3 (
148 c, -s, 0,
149 s, c, 0,
150 0, 0, 1
151 );
152 }
153
154 struct composer
155 {
156 rxvt_img *srcimg, *dstimg;
157 Picture src, dst, msk;
158 Display *dpy;
159
160 ecb_noinline
161 composer (rxvt_img *srcimg, rxvt_img *dstimg = 0)
162 : srcimg (srcimg), dstimg (dstimg), msk (0)
163 {
164 if (!this->dstimg)
165 this->dstimg = srcimg->new_empty ();
166 else if (!this->dstimg->pm) // somewhat unsatisfying
167 this->dstimg->alloc ();
168
169 dpy = srcimg->s->dpy;
170 src = srcimg->picture ();
171 dst = this->dstimg->picture ();
172 }
173
174 ecb_noinline
175 void mask (bool rgb = true, int w = 1, int h = 1)
176 {
177 Pixmap pixmap = XCreatePixmap (dpy, srcimg->pm, w, h, rgb ? 32 : 8);
178
179 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, rgb ? PictStandardARGB32 : PictStandardA8);
180 XRenderPictureAttributes pa;
181 pa.repeat = RepeatNormal;
182 pa.component_alpha = rgb;
183 msk = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa);
184
185 XFreePixmap (dpy, pixmap);
186
187 ecb_assume (msk);
188 }
189
190 // CreateSolidFill creates a very very very weird picture
191 void mask (const rgba &c)
192 {
193 XRenderColor rc = {
194 c.r * c.a / 65535,
195 c.g * c.a / 65535,
196 c.b * c.a / 65535,
197 c.a
198 };
199 msk = XRenderCreateSolidFill (dpy, &rc);
200 ecb_assume (msk);
201 }
202
203 void fill (const rgba &c)
204 {
205 XRenderColor rc = {
206 c.r * c.a / 65535,
207 c.g * c.a / 65535,
208 c.b * c.a / 65535,
209 c.a
210 };
211
212 XRenderFillRectangle (dpy, PictOpSrc, msk, &rc, 0, 0, 1, 1);
213 }
214
215 operator rxvt_img *()
216 {
217 return dstimg;
218 }
219
220 ecb_noinline
221 ~composer ()
222 {
223 XRenderFreePicture (dpy, src);
224 XRenderFreePicture (dpy, dst);
225 if (msk) XRenderFreePicture (dpy, msk);
226 }
227 };
228}
229
230static XRenderPictFormat *
231find_alpha_format_for (Display *dpy, XRenderPictFormat *format)
232{
233 if (format->direct.alphaMask)
234 return format; // already has alpha
235
236 // try to find a suitable alpha format, one bit alpha is enough for our purposes
237 if (format->type == PictTypeDirect)
238 for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
239 if (f->direct.alphaMask
240 && f->type == PictTypeDirect
241 && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
242 && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
243 && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
244 return f;
245
246 // should be a very good fallback
247 return XRenderFindStandardFormat (dpy, PictStandardARGB32);
248}
249
9rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height) 250rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat)
10: s(screen), w(width), h(height), format(format), shared(false)
11{
12 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
13}
14
15rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap)
16: s(screen), pm(pixmap), w(width), h(height), format(format), shared(false) 251: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
252 pm(0), ref(0)
17{ 253{
254}
255
256rxvt_img::rxvt_img (const rxvt_img &img)
257: 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)
258{
259 ++ref->cnt;
260}
261
262rxvt_img *
263rxvt_img::new_from_root (rxvt_screen *s)
264{
265 Display *dpy = s->dpy;
266 unsigned int root_pm_w, root_pm_h;
267 Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa [XA_XROOTPMAP_ID]);
268 if (root_pixmap == None)
269 root_pixmap = s->display->get_pixmap_property (s->display->xa [XA_ESETROOT_PMAP_ID]);
270
271 if (root_pixmap == None)
272 return 0;
273
274 Window wdummy;
275 int idummy;
276 unsigned int udummy;
277
278 if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy))
279 return 0;
280
281 rxvt_img *img = new rxvt_img (
282 s,
283 XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
284 0,
285 0,
286 root_pm_w,
287 root_pm_h
288 );
289
290 img->pm = root_pixmap;
291 img->ref = new pixref (root_pm_w, root_pm_h);
292 img->ref->ours = false;
293
294 return img;
295}
296
297# if HAVE_PIXBUF
298
299rxvt_img *
300rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb)
301{
302 Display *dpy = s->dpy;
303
304 int width = gdk_pixbuf_get_width (pb);
305 int height = gdk_pixbuf_get_height (pb);
306
307 if (width > 32767 || height > 32767) // well, we *could* upload in chunks
308 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
309
310 // since we require rgb24/argb32 formats from xrender we assume
311 // that both 24 and 32 bpp MUST be supported by any screen that supports xrender
312
313 int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
314
315 XImage xi;
316
317 xi.width = width;
318 xi.height = height;
319 xi.xoffset = 0;
320 xi.format = ZPixmap;
321 xi.byte_order = ImageByteOrder (dpy);
322 xi.bitmap_unit = 0; //XY only, unused
323 xi.bitmap_bit_order = 0; //XY only, unused
324 xi.bitmap_pad = BitmapPad (dpy);
325 xi.depth = 32;
326 xi.bytes_per_line = 0;
327 xi.bits_per_pixel = 32; //Z only
328 xi.red_mask = 0x00000000; //Z only, unused
329 xi.green_mask = 0x00000000; //Z only, unused
330 xi.blue_mask = 0x00000000; //Z only, unused
331 xi.obdata = 0; // probably unused
332
333 bool byte_order_mismatch = byte_order != xi.byte_order;
334
335 if (!XInitImage (&xi))
336 rxvt_fatal ("unable to initialise ximage, please report.\n");
337
338 if (height > INT_MAX / xi.bytes_per_line)
339 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
340
341 xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line);
342
343 int rowstride = gdk_pixbuf_get_rowstride (pb);
344 bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb);
345 unsigned char *row = gdk_pixbuf_get_pixels (pb);
346
347 char *line = xi.data;
348
349 for (int y = 0; y < height; y++)
350 {
351 unsigned char *src = row;
352 uint32_t *dst = (uint32_t *)line;
353
354 for (int x = 0; x < width; x++)
355 {
356 uint8_t r = *src++;
357 uint8_t g = *src++;
358 uint8_t b = *src++;
359 uint8_t a = *src;
360
361 // this is done so it can be jump-free, but newer gcc's clone inner the loop
362 a = pb_has_alpha ? a : 255;
363 src += pb_has_alpha;
364
365 r = (r * a + 127) / 255;
366 g = (g * a + 127) / 255;
367 b = (b * a + 127) / 255;
368
369 uint32_t v = (a << 24) | (r << 16) | (g << 8) | b;
370
371 if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
372 v = ecb_bswap32 (v);
373
374 *dst++ = v;
375 }
376
377 row += rowstride;
378 line += xi.bytes_per_line;
379 }
380
381 rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
382 img->alloc ();
383
384 GC gc = XCreateGC (dpy, img->pm, 0, 0);
385 XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
386 XFreeGC (dpy, gc);
387
388 free (xi.data);
389
390 return img;
18} 391}
19 392
20rxvt_img * 393rxvt_img *
21rxvt_img::new_from_file (rxvt_screen *s, const char *filename) 394rxvt_img::new_from_file (rxvt_screen *s, const char *filename)
22{ 395{
24 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); 397 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
25 398
26 if (!pb) 399 if (!pb)
27 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); 400 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
28 401
29 rxvt_img *img = new rxvt_img ( 402 rxvt_img *img = new_from_pixbuf (s, pb);
30 s,
31 XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
32 gdk_pixbuf_get_width (pb),
33 gdk_pixbuf_get_height (pb)
34 );
35 403
36 img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0); 404 g_object_unref (pb);
37 405
38 return img; 406 return img;
39} 407}
40 408
409# endif
410
411void
412rxvt_img::destroy ()
413{
414 if (--ref->cnt)
415 return;
416
417 if (pm && ref->ours)
418 XFreePixmap (s->dpy, pm);
419
420 delete ref;
421}
422
41rxvt_img::~rxvt_img () 423rxvt_img::~rxvt_img ()
42{ 424{
43 if (!shared) 425 destroy ();
44 XFreePixmap (s->display->dpy, pm); 426}
427
428void
429rxvt_img::alloc ()
430{
431 pm = XCreatePixmap (s->dpy, s->display->root, w, h, format->depth);
432 ref = new pixref (w, h);
433}
434
435rxvt_img *
436rxvt_img::new_empty ()
437{
438 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
439 img->alloc ();
440
441 return img;
442}
443
444Picture
445rxvt_img::picture ()
446{
447 Display *dpy = s->dpy;
448
449 XRenderPictureAttributes pa;
450 pa.repeat = repeat;
451 Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
452
453 return pic;
45} 454}
46 455
47void 456void
48rxvt_img::unshare () 457rxvt_img::unshare ()
49{ 458{
50 if (!shared) 459 if (ref->cnt == 1 && ref->ours)
51 return; 460 return;
52 461
462 Pixmap pm2 = XCreatePixmap (s->dpy, s->display->root, ref->w, ref->h, format->depth);
463 GC gc = XCreateGC (s->dpy, pm, 0, 0);
464 XCopyArea (s->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
465 XFreeGC (s->dpy, gc);
466
467 destroy ();
468
469 pm = pm2;
470 ref = new pixref (ref->w, ref->h);
471}
472
473void
474rxvt_img::fill (const rgba &c, int x, int y, int w, int h)
475{
476 XRenderColor rc = { c.r, c.g, c.b, c.a };
477
478 Display *dpy = s->dpy;
479 Picture src = picture ();
480 XRenderFillRectangle (dpy, PictOpSrc, src, &rc, x, y, w, h);
481 XRenderFreePicture (dpy, src);
482}
483
484void
485rxvt_img::fill (const rgba &c)
486{
487 fill (c, 0, 0, w, h);
488}
489
490void
491rxvt_img::add_alpha ()
492{
493 if (format->direct.alphaMask)
494 return;
495
496 composer cc (this, new rxvt_img (s, find_alpha_format_for (s->dpy, format), x, y, w, h, repeat));
497
498 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
499
53 rxvt_img *img = clone (); 500 rxvt_img *img = cc;
54 501
55 ::swap (pm , img->pm); 502 ::swap (img->ref, ref);
56 ::swap (shared, img->shared); 503 ::swap (img->pm , pm );
57 504
58 delete img; 505 delete img;
59} 506}
60 507
61void
62rxvt_img::fill (const rxvt_color &c)
63{
64 XGCValues gcv;
65 gcv.foreground = c;
66 GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);
67 XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);
68 XFreeGC (s->display->dpy, gc);
69}
70
71static void 508static void
72get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) 509get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params)
73{ 510{
74 double sigma = radius / 2.0; 511 nv sigma = radius / 2.0;
75 double scale = sqrt (2.0 * M_PI) * sigma; 512 nv scale = sqrt (2.0 * M_PI) * sigma;
76 double sum = 0.0; 513 nv sum = 0.0;
77 514
78 for (int i = 0; i < width; i++) 515 for (int i = 0; i < width; i++)
79 { 516 {
80 double x = i - width / 2; 517 nv x = i - width / 2;
81 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; 518 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
82 sum += kernel[i]; 519 sum += kernel[i];
83 } 520 }
84 521
85 params[0] = XDoubleToFixed (width); 522 params[0] = XDoubleToFixed (width);
87 524
88 for (int i = 0; i < width; i++) 525 for (int i = 0; i < width; i++)
89 params[i+2] = XDoubleToFixed (kernel[i] / sum); 526 params[i+2] = XDoubleToFixed (kernel[i] / sum);
90} 527}
91 528
92void 529rxvt_img *
93rxvt_img::blur (int rh, int rv) 530rxvt_img::blur (int rh, int rv)
94{ 531{
95 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) 532 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
96 return; 533 return clone ();
97 534
98 Display *dpy = s->display->dpy; 535 Display *dpy = s->dpy;
99 int size = max (rh, rv) * 2 + 1; 536 int size = max (rh, rv) * 2 + 1;
100 double *kernel = (double *)malloc (size * sizeof (double)); 537 nv *kernel = (nv *)malloc (size * sizeof (nv));
101 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); 538 XFixed *params = rxvt_temp_buf<XFixed> (size + 2);
539 rxvt_img *img = new_empty ();
102 540
103 XRenderPictureAttributes pa; 541 XRenderPictureAttributes pa;
104
105 pa.repeat = RepeatPad; 542 pa.repeat = RepeatPad;
106 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); 543 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
544 Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
545
107 Pixmap tmp = XCreatePixmap (dpy, pm, w, h, format->depth); 546 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
108 Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa); 547 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
109 XFreePixmap (dpy, tmp); 548 XFreePixmap (dpy, tmp_pm);
110 549
111 if (kernel && params) 550 if (kernel && params)
112 { 551 {
113 size = rh * 2 + 1; 552 size = rh * 2 + 1;
114 get_gaussian_kernel (rh, size, kernel, params); 553 get_gaussian_kernel (rh, size, kernel, params);
115 554
116 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); 555 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
117 XRenderComposite (dpy, 556 XRenderComposite (dpy,
118 PictOpSrc, 557 PictOpSrc,
119 src, 558 src,
559 None,
560 tmp,
561 0, 0,
562 0, 0,
563 0, 0,
564 w, h);
565
566 size = rv * 2 + 1;
567 get_gaussian_kernel (rv, size, kernel, params);
568 ::swap (params[0], params[1]);
569
570 XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
571 XRenderComposite (dpy,
572 PictOpSrc,
573 tmp,
120 None, 574 None,
121 dst, 575 dst,
122 0, 0, 576 0, 0,
123 0, 0, 577 0, 0,
124 0, 0, 578 0, 0,
125 w, h); 579 w, h);
126
127 ::swap (src, dst);
128
129 size = rv * 2 + 1;
130 get_gaussian_kernel (rv, size, kernel, params);
131 ::swap (params[0], params[1]);
132
133 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
134 XRenderComposite (dpy,
135 PictOpSrc,
136 src,
137 None,
138 dst,
139 0, 0,
140 0, 0,
141 0, 0,
142 w, h);
143 } 580 }
144 581
145 free (kernel); 582 free (kernel);
146 free (params); 583
147 XRenderFreePicture (dpy, src); 584 XRenderFreePicture (dpy, src);
148 XRenderFreePicture (dpy, dst); 585 XRenderFreePicture (dpy, dst);
149} 586 XRenderFreePicture (dpy, tmp);
150 587
151static Picture
152create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
153{
154 Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
155
156 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
157 XRenderPictureAttributes pa;
158 pa.repeat = True;
159 Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
160
161 XFreePixmap (dpy, pixmap);
162
163 return mask; 588 return img;
589}
590
591rxvt_img *
592rxvt_img::muladd (nv mul, nv add)
593{
594 // STEP 1: double the image width, fill all odd columns with white (==1)
595
596 composer cc (this, new rxvt_img (s, format, 0, 0, w * 2, h, repeat));
597
598 // why the hell does XRenderSetPictureTransform want a writable matrix :(
599 // that keeps us from just static const'ing this matrix.
600 XTransform h_double = {
601 0x08000, 0, 0,
602 0, 0x10000, 0,
603 0, 0, 0x10000
604 };
605
606 XRenderSetPictureFilter (cc.dpy, cc.src, "nearest", 0, 0);
607 XRenderSetPictureTransform (cc.dpy, cc.src, &h_double);
608 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
609
610 cc.mask (false, 2, 1);
611
612 static const XRenderColor c0 = { 0, 0, 0, 0 };
613 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c0, 0, 0, 1, 1);
614 static const XRenderColor c1 = { 65535, 65535, 65535, 65535 };
615 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c1, 1, 0, 1, 1);
616
617 Picture white = XRenderCreateSolidFill (cc.dpy, &c1);
618
619 XRenderComposite (cc.dpy, PictOpOver, white, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
620
621 XRenderFreePicture (cc.dpy, white);
622
623 // STEP 2: convolve the image with a 3x1 filter
624 // a 2x1 filter would obviously suffice, but given the total lack of specification
625 // for xrender, I expect different xrender implementations to randomly diverge.
626 // we also halve the image, and hope for the best (again, for lack of specs).
627 composer cc2 (cc.dstimg);
628
629 XFixed kernel [] = {
630 XDoubleToFixed (3), XDoubleToFixed (1),
631 XDoubleToFixed (0), XDoubleToFixed (mul), XDoubleToFixed (add)
632 };
633
634 XTransform h_halve = {
635 0x20000, 0, 0,
636 0, 0x10000, 0,
637 0, 0, 0x10000
638 };
639
640 XRenderSetPictureFilter (cc.dpy, cc2.src, "nearest", 0, 0);
641 XRenderSetPictureTransform (cc.dpy, cc2.src, &h_halve);
642 XRenderSetPictureFilter (cc.dpy, cc2.src, FilterConvolution, kernel, ecb_array_length (kernel));
643
644 XRenderComposite (cc.dpy, PictOpSrc, cc2.src, None, cc2.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
645
646 return cc2;
647}
648
649ecb_noinline static void
650extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
651{
652 int32_t x = clamp (c, cl0, cl1);
653 c -= x;
654 xc = x;
655}
656
657ecb_noinline static bool
658extract (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)
659{
660 extract (cl0, cl1, r, xr);
661 extract (cl0, cl1, g, xg);
662 extract (cl0, cl1, b, xb);
663 extract (cl0, cl1, a, xa);
664
665 return xr | xg | xb | xa;
164} 666}
165 667
166void 668void
167rxvt_img::brightness (double r, double g, double b, double a) 669rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
168{ 670{
671 unshare ();
672
169 Display *dpy = s->display->dpy; 673 Display *dpy = s->dpy;
170 Picture src = create_xrender_mask (dpy, pm, True);
171 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 674 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
172 675
676 // loop should not be needed for brightness, as only -1..1 makes sense
677 //while (r | g | b | a)
678 {
679 unsigned short xr, xg, xb, xa;
173 XRenderColor mask_c; 680 XRenderColor mask_c;
174 mask_c.red = float_to_component (r); 681
175 mask_c.green = float_to_component (g); 682 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
176 mask_c.blue = float_to_component (b);
177 mask_c.alpha = float_to_component (a);
178 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 683 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
179 684
180 XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 685 if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
686 {
687 XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
688 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
689 mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
690 mask_c.green = -mask_c.green;
691 mask_c.blue = -mask_c.blue;
692 mask_c.alpha = -mask_c.alpha;
693 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
694 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
695 }
696 }
697
698 XRenderFreePicture (dpy, dst);
181} 699}
182 700
183void 701void
184rxvt_img::contrast (double r, double g, double b, double a) 702rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
185{ 703{
186 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL)) 704 if (r < 0 || g < 0 || b < 0 || a < 0)
187 return; 705 rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
188 706
189 Display *dpy = s->display->dpy; 707 // premultiply (yeah, these are not exact, sue me or fix it)
190 Picture src = create_xrender_mask (dpy, pm, True); 708 r = (r * (a >> 8)) >> 8;
191 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 709 g = (g * (a >> 8)) >> 8;
710 b = (b * (a >> 8)) >> 8;
192 711
712 composer cc (this);
713 rxvt_img *img = cc;
714 img->fill (rgba (0, 0, 0, 0));
715
716 cc.mask (true);
717
718 //TODO: this operator does not yet implement some useful contrast
719 while (r | g | b | a)
720 {
721 unsigned short xr, xg, xb, xa;
193 XRenderColor mask_c; 722 XRenderColor mask_c;
194 mask_c.red = float_to_component (r); 723
195 mask_c.green = float_to_component (g); 724 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
196 mask_c.blue = float_to_component (b); 725 {
197 mask_c.alpha = float_to_component (a);
198 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 726 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &mask_c, 0, 0, 1, 1);
199
200 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 727 XRenderComposite (cc.dpy, PictOpAdd, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
201} 728 }
202
203bool
204rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
205{
206 bool argb = format->id == PictStandardARGB32;
207
208 Display *dpy = s->display->dpy;
209
210 if (s->visual->c_class != TrueColor)
211 return false;
212
213 uint32_t red_mask, green_mask, blue_mask, alpha_mask;
214
215 if (argb)
216 { 729 }
217 red_mask = 0xff << 16; 730
218 green_mask = 0xff << 8; 731 ::swap (img->ref, ref);
219 blue_mask = 0xff; 732 ::swap (img->pm , pm );
220 alpha_mask = 0xff << 24; 733
734 delete img;
735}
736
737void
738rxvt_img::draw (rxvt_img *img, int op, nv mask)
739{
740 unshare ();
741
742 composer cc (img, this);
743
744 if (mask != 1.)
745 cc.mask (rgba (0, 0, 0, float_to_component (mask)));
746
747 XRenderComposite (cc.dpy, op, cc.src, cc.msk, cc.dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h);
748}
749
750rxvt_img *
751rxvt_img::clone ()
752{
753 return new rxvt_img (*this);
754}
755
756rxvt_img *
757rxvt_img::reify ()
758{
759 if (x == 0 && y == 0 && w == ref->w && h == ref->h)
760 return clone ();
761
762 // add an alpha channel if...
763 bool alpha = !format->direct.alphaMask // pixmap has none yet
764 && (x || y) // we need one because of non-zero offset
765 && repeat == RepeatNone; // and we have no good pixels to fill with
766
767 composer cc (this, new rxvt_img (s, alpha ? find_alpha_format_for (s->dpy, format) : format,
768 0, 0, w, h, repeat));
769
770 if (repeat == RepeatNone)
771 {
772 XRenderColor rc = { 0, 0, 0, 0 };
773 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
774 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
221 } 775 }
222 else 776 else
223 { 777 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, -x, -y, 0, 0, 0, 0, w, h);
224 red_mask = s->visual->red_mask; 778
225 green_mask = s->visual->green_mask; 779 return cc;
226 blue_mask = s->visual->blue_mask; 780}
227 alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha; 781
782rxvt_img *
783rxvt_img::sub_rect (int x, int y, int width, int height)
784{
785 rxvt_img *img = clone ();
786
787 img->x -= x;
788 img->y -= y;
789
790 if (w != width || h != height)
228 } 791 {
792 img->w = width;
793 img->h = height;
229 794
230 int width_r = ecb_popcount32 (red_mask); 795 rxvt_img *img2 = img->reify ();
231 int width_g = ecb_popcount32 (green_mask); 796 delete img;
232 int width_b = ecb_popcount32 (blue_mask); 797 img = img2;
233 int width_a = ecb_popcount32 (alpha_mask);
234
235 if (width_r > 8 || width_g > 8 || width_b > 8 || width_a > 8)
236 return false;
237
238 int sh_r = ecb_ctz32 (red_mask);
239 int sh_g = ecb_ctz32 (green_mask);
240 int sh_b = ecb_ctz32 (blue_mask);
241 int sh_a = ecb_ctz32 (alpha_mask);
242
243 if (width > 32767 || height > 32767)
244 return false;
245
246 XImage *ximage = XCreateImage (dpy, s->visual, argb ? 32 : format->depth, ZPixmap, 0, 0,
247 width, height, 32, 0);
248 if (!ximage)
249 return false;
250
251 if (height > INT_MAX / ximage->bytes_per_line
252 || !(ximage->data = (char *)malloc (height * ximage->bytes_per_line)))
253 { 798 }
254 XDestroyImage (ximage); 799
255 return false; 800 return img;
801}
802
803rxvt_img *
804rxvt_img::transform (const nv matrix[3][3])
805{
806 return transform (mat3x3 (&matrix[0][0]));
807}
808
809rxvt_img *
810rxvt_img::transform (const nv *matrix)
811{
812 mat3x3 m (matrix);
813
814 // calculate new pixel bounding box coordinates
815 nv rmin[2], rmax[2];
816
817 for (int i = 0; i < 2; ++i)
256 } 818 {
819 nv v;
257 820
258 GC gc = XCreateGC (dpy, pm, 0, 0); 821 v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v;
259 822 v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
260 ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; 823 v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
261 824 v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
262 int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
263 int channels = gdk_pixbuf_get_n_channels (pixbuf);
264 unsigned char *row = gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * channels;
265 char *line = ximage->data;
266
267 rgba c (0, 0, 0);
268
269 if (channels == 4 && alpha_mask == 0)
270 { 825 }
271 //pix_colors[Color_bg].get (c);
272 //TODO
273 c.r >>= 8;
274 c.g >>= 8;
275 c.b >>= 8;
276 }
277 826
278 for (int y = 0; y < height; y++) 827 float sx = rmin [0] - x;
279 { 828 float sy = rmin [1] - y;
280 for (int x = 0; x < width; x++)
281 {
282 unsigned char *pixel = row + x * channels;
283 uint32_t value;
284 unsigned char r, g, b, a;
285 829
286 if (channels == 4) 830 // TODO: adjust matrix for subpixel accuracy
287 { 831 int nx = floor (rmin [0]);
288 a = pixel[3]; 832 int ny = floor (rmin [1]);
289 r = (pixel[0] * a + c.r * (0xff - a)) / 0xff;
290 g = (pixel[1] * a + c.g * (0xff - a)) / 0xff;
291 b = (pixel[2] * a + c.b * (0xff - a)) / 0xff;
292 }
293 else
294 {
295 a = 0xff;
296 r = pixel[0];
297 g = pixel[1];
298 b = pixel[2];
299 }
300 833
301 value = ((r >> (8 - width_r)) << sh_r) 834 int new_width = ceil (rmax [0] - rmin [0]);
302 | ((g >> (8 - width_g)) << sh_g) 835 int new_height = ceil (rmax [1] - rmin [1]);
303 | ((b >> (8 - width_b)) << sh_b)
304 | ((a >> (8 - width_a)) << sh_a);
305 836
306 if (ximage->bits_per_pixel == 32) 837 mat3x3 inv = (mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y)).inverse ();
307 ((uint32_t *)line)[x] = value;
308 else
309 XPutPixel (ximage, x, y, value);
310 }
311 838
312 row += rowstride; 839 composer cc (this, new rxvt_img (s, format, nx, ny, new_width, new_height, repeat));
313 line += ximage->bytes_per_line;
314 }
315
316 XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);
317 XDestroyImage (ximage);
318 XFreeGC (dpy, gc);
319
320 return true;
321}
322
323rxvt_img *
324rxvt_img::clone ()
325{
326 GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
327 Pixmap pm2 = XCreatePixmap (s->display->dpy, pm, w, h, format->depth);
328 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0);
329 XFreeGC (s->display->dpy, gc);
330 return new rxvt_img (s, format, w, h, pm2);
331}
332
333rxvt_img *
334rxvt_img::transform (int new_width, int new_height, int repeat, double matrix[9])
335{
336 rxvt_img *img = new rxvt_img (s, format, new_width, new_height);
337
338 Display *dpy = s->display->dpy;
339 XRenderPictureAttributes pa;
340 pa.repeat = repeat;
341 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
342 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
343 840
344 XTransform xfrm; 841 XTransform xfrm;
345 842
346 for (int i = 0; i < 3; ++i) 843 for (int i = 0; i < 3; ++i)
347 for (int j = 0; j < 3; ++j) 844 for (int j = 0; j < 3; ++j)
348 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); 845 xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
349 846
847 XRenderSetPictureFilter (cc.dpy, cc.src, "good", 0, 0);
350 XRenderSetPictureTransform (dpy, src, &xfrm); 848 XRenderSetPictureTransform (cc.dpy, cc.src, &xfrm);
351 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); 849 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
352 850
353 XRenderFreePicture (dpy, src); 851 return cc;
354 XRenderFreePicture (dpy, dst); 852}
853
854rxvt_img *
855rxvt_img::scale (int new_width, int new_height)
856{
857 if (w == new_width && h == new_height)
858 return clone ();
859
860 int old_repeat_mode = repeat;
861 repeat = RepeatPad; // not right, but xrender can't properly scale it seems
862
863 rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h));
864
865 repeat = old_repeat_mode;
866 img->repeat = repeat;
355 867
356 return img; 868 return img;
357} 869}
358 870
359rxvt_img * 871rxvt_img *
360rxvt_img::scale (int new_width, int new_height) 872rxvt_img::rotate (int cx, int cy, nv phi)
361{ 873{
362 double matrix[9] = { 874 move (-cx, -cy);
363 new_width / (double)w, 0, 0, 875 rxvt_img *img = transform (mat3x3::rotate (phi));
364 0, new_height / (double)h, 0, 876 move ( cx, cy);
365 0, 0, 1 877 img->move (cx, cy);
366 };
367
368 return transform (new_width, new_height, RepeatNormal, matrix);
369}
370
371rxvt_img *
372rxvt_img::convert_to (XRenderPictFormat *new_format)
373{
374 rxvt_img *img = new rxvt_img (s, new_format, w, h);
375
376 Display *dpy = s->display->dpy;
377 Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);
378 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
379
380 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
381
382 XRenderFreePicture (dpy, src);
383 XRenderFreePicture (dpy, dst);
384 878
385 return img; 879 return img;
386} 880}
387 881
882rxvt_img *
883rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
884{
885 if (new_format == format)
886 return clone ();
887
888 composer cc (this, new rxvt_img (s, new_format, x, y, w, h, repeat));
889
890 int op = PictOpSrc;
891
892 if (format->direct.alphaMask && !new_format->direct.alphaMask)
893 {
894 // does it have to be that complicated
895 XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
896 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);
897
898 op = PictOpOver;
899 }
900
901 XRenderComposite (cc.dpy, op, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
902
903 return cc;
904}
905
906rxvt_img *
907rxvt_img::tint (const rgba &c)
908{
909 composer cc (this);
910 cc.mask (true);
911 cc.fill (c);
912
913 XRenderComposite (cc.dpy, PictOpSrc, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
914
915 return cc;
916}
917
918rxvt_img *
919rxvt_img::shade (nv factor, rgba c)
920{
921 clamp_it (factor, -1., 1.);
922 factor++;
923
924 if (factor > 1)
925 {
926 c.r = c.r * (2 - factor);
927 c.g = c.g * (2 - factor);
928 c.b = c.b * (2 - factor);
929 }
930 else
931 {
932 c.r = c.r * factor;
933 c.g = c.g * factor;
934 c.b = c.b * factor;
935 }
936
937 rxvt_img *img = this->tint (c);
938
939 if (factor > 1)
940 {
941 c.a = 0xffff;
942 c.r =
943 c.g =
944 c.b = 0xffff * (factor - 1);
945
946 img->brightness (c.r, c.g, c.b, c.a);
947 }
948
949 return img;
950}
951
952rxvt_img *
953rxvt_img::filter (const char *name, int nparams, nv *params)
954{
955 composer cc (this);
956
957 XFixed *xparams = rxvt_temp_buf<XFixed> (nparams);
958
959 for (int i = 0; i < nparams; ++i)
960 xparams [i] = XDoubleToFixed (params [i]);
961
962 XRenderSetPictureFilter (cc.dpy, cc.src, name, xparams, nparams);
963
964 XRenderComposite (cc.dpy, PictOpSrc, cc.src, 0, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
965
966 return cc;
967}
968
388#endif 969#endif
389 970

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