ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/rxvt-unicode/src/rxvtimg.C
(Generate patch)

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.10 by sf-exg, Mon Jun 4 06:59:50 2012 UTC vs.
Revision 1.101 by root, Mon Jul 2 03:57:53 2012 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 2 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{
18} 254}
19 255
20rxvt_img * 256rxvt_img::rxvt_img (const rxvt_img &img)
21rxvt_img::new_from_file (rxvt_screen *s, const char *filename) 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)
22{ 258{
23 GError *err; 259 ++ref->cnt;
24 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); 260}
25 261
26 if (!pb) 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))
27 return 0; 279 return 0;
28 280
29 rxvt_img *img = new rxvt_img ( 281 rxvt_img *img = new rxvt_img (
30 s, 282 s,
31 XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24), 283 XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
32 gdk_pixbuf_get_width (pb), 284 0,
33 gdk_pixbuf_get_height (pb) 285 0,
286 root_pm_w,
287 root_pm_h
34 ); 288 );
35 289
36 img->render (pb, 0, 0, img->w, img->h, 0, 0); 290 img->pm = root_pixmap;
291 img->ref = new pixref (root_pm_w, root_pm_h);
292 img->ref->ours = false;
37 293
38 return img; 294 return img;
39} 295}
40 296
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 if (!pb_has_alpha)
355 for (int x = 0; x < width; x++)
356 {
357 uint8_t r = *src++;
358 uint8_t g = *src++;
359 uint8_t b = *src++;
360
361 uint32_t v = (255 << 24) | (r << 16) | (g << 8) | b;
362
363 if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
364 v = ecb_bswap32 (v);
365
366 *dst++ = v;
367 }
368 else
369 for (int x = 0; x < width; x++)
370 {
371 uint32_t v = *(uint32_t *)src; src += 4;
372
373 if (ecb_big_endian ())
374 v = ecb_bswap32 (v);
375
376 v = ecb_rotl32 (v, 8); // abgr to bgra
377
378 if (!byte_order_mismatch)
379 v = ecb_bswap32 (v);
380
381 *dst++ = v;
382 }
383
384 row += rowstride;
385 line += xi.bytes_per_line;
386 }
387
388 rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
389 img->alloc ();
390
391 GC gc = XCreateGC (dpy, img->pm, 0, 0);
392 XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
393 XFreeGC (dpy, gc);
394
395 free (xi.data);
396
397 return img;
398}
399
400rxvt_img *
401rxvt_img::new_from_file (rxvt_screen *s, const char *filename)
402{
403 GError *err = 0;
404 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
405
406 if (!pb)
407 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
408
409 rxvt_img *img = new_from_pixbuf (s, pb);
410
411 g_object_unref (pb);
412
413 return img;
414}
415
416# endif
417
418void
419rxvt_img::destroy ()
420{
421 if (--ref->cnt)
422 return;
423
424 if (pm && ref->ours)
425 XFreePixmap (s->dpy, pm);
426
427 delete ref;
428}
429
41rxvt_img::~rxvt_img () 430rxvt_img::~rxvt_img ()
42{ 431{
43 if (!shared) 432 destroy ();
44 XFreePixmap (s->display->dpy, pm);
45} 433}
46 434
47void 435void
48rxvt_img::fill (const rxvt_color &c) 436rxvt_img::alloc ()
49{ 437{
50 XGCValues gcv; 438 pm = XCreatePixmap (s->dpy, s->display->root, w, h, format->depth);
51 gcv.foreground = c; 439 ref = new pixref (w, h);
52 GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); 440}
53 XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); 441
442rxvt_img *
443rxvt_img::new_empty ()
444{
445 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
446 img->alloc ();
447
448 return img;
449}
450
451Picture
452rxvt_img::picture ()
453{
454 Display *dpy = s->dpy;
455
456 XRenderPictureAttributes pa;
457 pa.repeat = repeat;
458 Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
459
460 return pic;
461}
462
463void
464rxvt_img::unshare ()
465{
466 if (ref->cnt == 1 && ref->ours)
467 return;
468
469 Pixmap pm2 = XCreatePixmap (s->dpy, s->display->root, ref->w, ref->h, format->depth);
470 GC gc = XCreateGC (s->dpy, pm, 0, 0);
471 XCopyArea (s->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
54 XFreeGC (s->display->dpy, gc); 472 XFreeGC (s->dpy, gc);
473
474 destroy ();
475
476 pm = pm2;
477 ref = new pixref (ref->w, ref->h);
478}
479
480void
481rxvt_img::fill (const rgba &c, int x, int y, int w, int h)
482{
483 XRenderColor rc = { c.r, c.g, c.b, c.a };
484
485 Display *dpy = s->dpy;
486 Picture src = picture ();
487 XRenderFillRectangle (dpy, PictOpSrc, src, &rc, x, y, w, h);
488 XRenderFreePicture (dpy, src);
489}
490
491void
492rxvt_img::fill (const rgba &c)
493{
494 fill (c, 0, 0, w, h);
495}
496
497void
498rxvt_img::add_alpha ()
499{
500 if (format->direct.alphaMask)
501 return;
502
503 composer cc (this, new rxvt_img (s, find_alpha_format_for (s->dpy, format), x, y, w, h, repeat));
504
505 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
506
507 rxvt_img *img = cc;
508
509 ::swap (img->ref, ref);
510 ::swap (img->pm , pm );
511
512 delete img;
55} 513}
56 514
57static void 515static void
58get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) 516get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params)
59{ 517{
60 double sigma = radius / 2.0; 518 nv sigma = radius / 2.0;
61 double scale = sqrt (2.0 * M_PI) * sigma; 519 nv scale = sqrt (2.0 * M_PI) * sigma;
62 double sum = 0.0; 520 nv sum = 0.0;
63 521
64 for (int i = 0; i < width; i++) 522 for (int i = 0; i < width; i++)
65 { 523 {
66 double x = i - width / 2; 524 nv x = i - width / 2;
67 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; 525 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
68 sum += kernel[i]; 526 sum += kernel[i];
69 } 527 }
70 528
71 params[0] = XDoubleToFixed (width); 529 params[0] = XDoubleToFixed (width);
… …
73 531
74 for (int i = 0; i < width; i++) 532 for (int i = 0; i < width; i++)
75 params[i+2] = XDoubleToFixed (kernel[i] / sum); 533 params[i+2] = XDoubleToFixed (kernel[i] / sum);
76} 534}
77 535
78void 536rxvt_img *
79rxvt_img::blur (int rh, int rv) 537rxvt_img::blur (int rh, int rv)
80{ 538{
81 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) 539 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
82 return; 540 return clone ();
83 541
84 Display *dpy = s->display->dpy; 542 Display *dpy = s->dpy;
85 int size = max (rh, rv) * 2 + 1; 543 int size = max (rh, rv) * 2 + 1;
86 double *kernel = (double *)malloc (size * sizeof (double)); 544 nv *kernel = (nv *)malloc (size * sizeof (nv));
87 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); 545 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
546 rxvt_img *img = new_empty ();
88 547
89 XRenderPictureAttributes pa; 548 XRenderPictureAttributes pa;
90
91 pa.repeat = RepeatPad; 549 pa.repeat = RepeatPad;
92 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); 550 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
551 Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
552
93 Pixmap tmp = XCreatePixmap (dpy, pm, w, h, format->depth); 553 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
94 Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa); 554 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
95 XFreePixmap (dpy, tmp); 555 XFreePixmap (dpy, tmp_pm);
96 556
97 if (kernel && params) 557 if (kernel && params)
98 { 558 {
99 size = rh * 2 + 1; 559 size = rh * 2 + 1;
100 get_gaussian_kernel (rh, size, kernel, params); 560 get_gaussian_kernel (rh, size, kernel, params);
101 561
102 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); 562 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
103 XRenderComposite (dpy, 563 XRenderComposite (dpy,
104 PictOpSrc, 564 PictOpSrc,
105 src, 565 src,
566 None,
567 tmp,
568 0, 0,
569 0, 0,
570 0, 0,
571 w, h);
572
573 size = rv * 2 + 1;
574 get_gaussian_kernel (rv, size, kernel, params);
575 ::swap (params[0], params[1]);
576
577 XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
578 XRenderComposite (dpy,
579 PictOpSrc,
580 tmp,
106 None, 581 None,
107 dst, 582 dst,
108 0, 0, 583 0, 0,
109 0, 0, 584 0, 0,
110 0, 0, 585 0, 0,
111 w, h); 586 w, h);
112
113 ::swap (src, dst);
114
115 size = rv * 2 + 1;
116 get_gaussian_kernel (rv, size, kernel, params);
117 ::swap (params[0], params[1]);
118
119 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
120 XRenderComposite (dpy,
121 PictOpSrc,
122 src,
123 None,
124 dst,
125 0, 0,
126 0, 0,
127 0, 0,
128 w, h);
129 } 587 }
130 588
131 free (kernel); 589 free (kernel);
132 free (params); 590 free (params);
591
133 XRenderFreePicture (dpy, src); 592 XRenderFreePicture (dpy, src);
134 XRenderFreePicture (dpy, dst); 593 XRenderFreePicture (dpy, dst);
135} 594 XRenderFreePicture (dpy, tmp);
136 595
137static Picture
138create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
139{
140 Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
141
142 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
143 XRenderPictureAttributes pa;
144 pa.repeat = True;
145 Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
146
147 XFreePixmap (dpy, pixmap);
148
149 return mask; 596 return img;
597}
598
599rxvt_img *
600rxvt_img::muladd (nv mul, nv add)
601{
602 // STEP 1: double the image width, fill all odd columns with white (==1)
603
604 composer cc (this, new rxvt_img (s, format, 0, 0, w * 2, h, repeat));
605
606 // why the hell does XRenderSetPictureTransform want a writable matrix :(
607 // that keeps us from just static const'ing this matrix.
608 XTransform h_double = {
609 32768, 0, 0,
610 0, 65536, 0,
611 0, 0, 65536
612 };
613
614 XRenderSetPictureFilter (cc.dpy, cc.src, "nearest", 0, 0);
615 XRenderSetPictureTransform (cc.dpy, cc.src, &h_double);
616 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
617
618 cc.mask (false, 2, 1);
619
620 static const XRenderColor c0 = { 0, 0, 0, 0 };
621 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c0, 0, 0, 1, 1);
622 static const XRenderColor c1 = { 65535, 65535, 65535, 65535 };
623 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c1, 1, 0, 1, 1);
624
625 Picture white = XRenderCreateSolidFill (cc.dpy, &c1);
626
627 XRenderComposite (cc.dpy, PictOpOver, white, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
628
629 XRenderFreePicture (cc.dpy, white);
630
631 // STEP 2: convolve the image with a 3x1 filter
632 // a 2x1 filter would obviously suffice, but given the total lack of specification
633 // for xrender, I expect different xrender implementations to randomly diverge.
634 // we also halve the image, and hope for the best (again, for lack of specs).
635 composer cc2 (cc.dstimg);
636
637 XFixed kernel [] = {
638 XDoubleToFixed (3), XDoubleToFixed (1),
639 XDoubleToFixed (0), XDoubleToFixed (mul), XDoubleToFixed (add)
640 };
641
642 XTransform h_halve = {
643 131072, 0, 0,
644 0, 65536, 0,
645 0, 0, 65536
646 };
647
648 XRenderSetPictureFilter (cc.dpy, cc2.src, "nearest", 0, 0);
649 XRenderSetPictureTransform (cc.dpy, cc2.src, &h_halve);
650 XRenderSetPictureFilter (cc.dpy, cc2.src, FilterConvolution, kernel, ecb_array_length (kernel));
651
652 XRenderComposite (cc.dpy, PictOpSrc, cc2.src, None, cc2.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
653
654 return cc2;
655}
656
657ecb_noinline static void
658extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
659{
660 int32_t x = clamp (c, cl0, cl1);
661 c -= x;
662 xc = x;
663}
664
665ecb_noinline static bool
666extract (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)
667{
668 extract (cl0, cl1, r, xr);
669 extract (cl0, cl1, g, xg);
670 extract (cl0, cl1, b, xb);
671 extract (cl0, cl1, a, xa);
672
673 return xr | xg | xb | xa;
150} 674}
151 675
152void 676void
153rxvt_img::brightness (double r, double g, double b, double a) 677rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
154{ 678{
679 unshare ();
680
155 Display *dpy = s->display->dpy; 681 Display *dpy = s->dpy;
156 Picture src = create_xrender_mask (dpy, pm, True);
157 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 682 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
158 683
684 // loop should not be needed for brightness, as only -1..1 makes sense
685 //while (r | g | b | a)
686 {
687 unsigned short xr, xg, xb, xa;
159 XRenderColor mask_c; 688 XRenderColor mask_c;
160 mask_c.red = float_to_component (r); 689
161 mask_c.green = float_to_component (g); 690 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
162 mask_c.blue = float_to_component (b);
163 mask_c.alpha = float_to_component (a);
164 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 691 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
165 692
166 XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 693 if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
694 {
695 XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
696 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
697 mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
698 mask_c.green = -mask_c.green;
699 mask_c.blue = -mask_c.blue;
700 mask_c.alpha = -mask_c.alpha;
701 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
702 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
703 }
704 }
705
706 XRenderFreePicture (dpy, dst);
167} 707}
168 708
169void 709void
170rxvt_img::contrast (double r, double g, double b, double a) 710rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
171{ 711{
172 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL)) 712 if (r < 0 || g < 0 || b < 0 || a < 0)
173 return; 713 rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
174 714
175 Display *dpy = s->display->dpy; 715 // premultiply (yeah, these are not exact, sue me or fix it)
176 Picture src = create_xrender_mask (dpy, pm, True); 716 r = (r * (a >> 8)) >> 8;
177 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 717 g = (g * (a >> 8)) >> 8;
718 b = (b * (a >> 8)) >> 8;
178 719
720 composer cc (this);
721 rxvt_img *img = cc;
722 img->fill (rgba (0, 0, 0, 0));
723
724 cc.mask (true);
725
726 //TODO: this operator does not yet implement some useful contrast
727 while (r | g | b | a)
728 {
729 unsigned short xr, xg, xb, xa;
179 XRenderColor mask_c; 730 XRenderColor mask_c;
180 mask_c.red = float_to_component (r); 731
181 mask_c.green = float_to_component (g); 732 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
182 mask_c.blue = float_to_component (b); 733 {
183 mask_c.alpha = float_to_component (a);
184 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 734 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &mask_c, 0, 0, 1, 1);
185
186 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 735 XRenderComposite (cc.dpy, PictOpAdd, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
736 }
737 }
738
739 ::swap (img->ref, ref);
740 ::swap (img->pm , pm );
741
742 delete img;
187} 743}
188 744
189void 745void
190rxvt_img::render (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y) 746rxvt_img::draw (rxvt_img *img, int op, nv mask)
191{ 747{
192 //TODO 748 unshare ();
193}
194 749
750 composer cc (img, this);
751
752 if (mask != 1.)
753 cc.mask (rgba (0, 0, 0, float_to_component (mask)));
754
755 XRenderComposite (cc.dpy, op, cc.src, cc.msk, cc.dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h);
756}
757
195rxvt_img * 758rxvt_img *
196rxvt_img::copy () 759rxvt_img::clone ()
197{ 760{
198 GC gc = XCreateGC (s->display->dpy, pm, 0, 0); 761 return new rxvt_img (*this);
199 Pixmap pm2 = XCreatePixmap (s->display->dpy, pm, w, h, format->depth);
200 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0);
201 XFreeGC (s->display->dpy, gc);
202 return new rxvt_img (s, format, w, h, pm2);
203} 762}
204 763
205rxvt_img * 764rxvt_img *
206rxvt_img::transform (int new_width, int new_height, double matrix[16]) 765rxvt_img::reify ()
207{ 766{
208 //TODO 767 if (x == 0 && y == 0 && w == ref->w && h == ref->h)
768 return clone ();
769
770 Display *dpy = s->dpy;
771
772 // add an alpha channel if...
773 bool alpha = !format->direct.alphaMask // pixmap has none yet
774 && (x || y) // we need one because of non-zero offset
775 && repeat == RepeatNone; // and we have no good pixels to fill with
776
777 composer cc (this, new rxvt_img (s, alpha ? find_alpha_format_for (s->dpy, format) : format,
778 0, 0, w, h, repeat));
779
780 if (alpha)
781 {
782 XRenderColor rc = { 0, 0, 0, 0 };
783 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
784 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
785 }
786 else
787 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, -x, -y, 0, 0, 0, 0, w, h);
788
789 return cc;
790}
791
792rxvt_img *
793rxvt_img::sub_rect (int x, int y, int width, int height)
794{
795 rxvt_img *img = clone ();
796
797 img->x -= x;
798 img->y -= y;
799
800 if (w != width || h != height)
801 {
802 img->w = width;
803 img->h = height;
804
805 rxvt_img *img2 = img->reify ();
806 delete img;
807 img = img2;
808 }
809
810 return img;
811}
812
813rxvt_img *
814rxvt_img::transform (const nv matrix[3][3])
815{
816 return transform (mat3x3 (&matrix[0][0]));
817}
818
819rxvt_img *
820rxvt_img::transform (const nv *matrix)
821{
822 mat3x3 m (matrix);
823
824 // calculate new pixel bounding box coordinates
825 nv rmin[2], rmax[2];
826
827 for (int i = 0; i < 2; ++i)
828 {
829 nv v;
830
831 v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v;
832 v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
833 v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
834 v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
835 }
836
837 float sx = rmin [0] - x;
838 float sy = rmin [1] - y;
839
840 // TODO: adjust matrix for subpixel accuracy
841 int nx = floor (rmin [0]);
842 int ny = floor (rmin [1]);
843
844 int new_width = ceil (rmax [0] - rmin [0]);
845 int new_height = ceil (rmax [1] - rmin [1]);
846
847 mat3x3 inv = (mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y)).inverse ();
848
849 composer cc (this, new rxvt_img (s, format, nx, ny, new_width, new_height, repeat));
850
851 XTransform xfrm;
852
853 for (int i = 0; i < 3; ++i)
854 for (int j = 0; j < 3; ++j)
855 xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
856
857 XRenderSetPictureFilter (cc.dpy, cc.src, "good", 0, 0);
858 XRenderSetPictureTransform (cc.dpy, cc.src, &xfrm);
859 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
860
861 return cc;
209} 862}
210 863
211rxvt_img * 864rxvt_img *
212rxvt_img::scale (int new_width, int new_height) 865rxvt_img::scale (int new_width, int new_height)
213{ 866{
214 // use transform 867 if (w == new_width && h == new_height)
215 //TODO 868 return clone ();
216}
217 869
218rxvt_img * 870 int old_repeat_mode = repeat;
219rxvt_img::convert_to (XRenderPictFormat *new_format) 871 repeat = RepeatPad; // not right, but xrender can't properly scale it seems
220{
221 rxvt_img *img = new rxvt_img (s, new_format, w, h);
222 872
223 Display *dpy = s->display->dpy; 873 rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h));
224 Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);
225 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
226 874
227 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 875 repeat = old_repeat_mode;
228 876 img->repeat = repeat;
229 XRenderFreePicture (dpy, src);
230 XRenderFreePicture (dpy, dst);
231 877
232 return img; 878 return img;
233} 879}
234 880
881rxvt_img *
882rxvt_img::rotate (int cx, int cy, nv phi)
883{
884 move (-cx, -cy);
885 rxvt_img *img = transform (mat3x3::rotate (phi));
886 move ( cx, cy);
887 img->move (cx, cy);
888
889 return img;
890}
891
892rxvt_img *
893rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
894{
895 if (new_format == format)
896 return clone ();
897
898 composer cc (this, new rxvt_img (s, new_format, x, y, w, h, repeat));
899
900 int op = PictOpSrc;
901
902 if (format->direct.alphaMask && !new_format->direct.alphaMask)
903 {
904 // does it have to be that complicated
905 XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
906 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);
907
908 op = PictOpOver;
909 }
910
911 XRenderComposite (cc.dpy, op, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
912
913 return cc;
914}
915
916rxvt_img *
917rxvt_img::tint (const rgba &c)
918{
919 composer cc (this);
920 cc.mask (true);
921 cc.fill (c);
922
923 XRenderComposite (cc.dpy, PictOpSrc, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
924
925 return cc;
926}
927
928rxvt_img *
929rxvt_img::filter (const char *name, int nparams, nv *params)
930{
931 composer cc (this);
932
933 XFixed *xparams = rxvt_temp_buf<XFixed> (nparams);
934
935 for (int i = 0; i < nparams; ++i)
936 xparams [i] = XDoubleToFixed (params [i]);
937
938 XRenderSetPictureFilter (cc.dpy, cc.src, name, xparams, nparams);
939
940 XRenderComposite (cc.dpy, PictOpSrc, cc.src, 0, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
941
942 return cc;
943}
944
235#endif 945#endif
236 946

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines