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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.22 by sf-exg, Tue Jun 5 15:18:23 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;
18} 260}
19 261
20rxvt_img * 262rxvt_img *
21rxvt_img::new_from_root (rxvt_screen *s) 263rxvt_img::new_from_root (rxvt_screen *s)
22{ 264{
23 Display *dpy = s->display->dpy; 265 Display *dpy = s->dpy;
24 unsigned int root_pm_w, root_pm_h; 266 unsigned int root_pm_w, root_pm_h;
25 Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]); 267 Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa [XA_XROOTPMAP_ID]);
26 if (root_pixmap == None) 268 if (root_pixmap == None)
27 root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]); 269 root_pixmap = s->display->get_pixmap_property (s->display->xa [XA_ESETROOT_PMAP_ID]);
28 270
29 if (root_pixmap == None) 271 if (root_pixmap == None)
30 return 0; 272 return 0;
31 273
32 Window wdummy; 274 Window wdummy;
… …
37 return 0; 279 return 0;
38 280
39 rxvt_img *img = new rxvt_img ( 281 rxvt_img *img = new rxvt_img (
40 s, 282 s,
41 XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)), 283 XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
284 0,
285 0,
42 root_pm_w, 286 root_pm_w,
43 root_pm_h, 287 root_pm_h
44 root_pixmap
45 ); 288 );
46 289
47 img->shared = true; 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);
48 389
49 return img; 390 return img;
50} 391}
51 392
52rxvt_img * 393rxvt_img *
… …
56 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); 397 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
57 398
58 if (!pb) 399 if (!pb)
59 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); 400 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
60 401
61 rxvt_img *img = new rxvt_img ( 402 rxvt_img *img = new_from_pixbuf (s, pb);
62 s,
63 XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
64 gdk_pixbuf_get_width (pb),
65 gdk_pixbuf_get_height (pb)
66 );
67 403
68 img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0); 404 g_object_unref (pb);
69 405
70 return img; 406 return img;
71} 407}
72 408
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
73rxvt_img::~rxvt_img () 423rxvt_img::~rxvt_img ()
74{ 424{
75 if (!shared) 425 destroy ();
76 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;
77} 454}
78 455
79void 456void
80rxvt_img::unshare () 457rxvt_img::unshare ()
81{ 458{
82 if (!shared) 459 if (ref->cnt == 1 && ref->ours)
83 return; 460 return;
84 461
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
85 rxvt_img *img = clone (); 500 rxvt_img *img = cc;
86 501
87 ::swap (pm , img->pm); 502 ::swap (img->ref, ref);
88 ::swap (shared, img->shared); 503 ::swap (img->pm , pm );
89 504
90 delete img; 505 delete img;
91} 506}
92 507
93void
94rxvt_img::fill (const rxvt_color &c)
95{
96 XGCValues gcv;
97 gcv.foreground = c;
98 GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);
99 XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);
100 XFreeGC (s->display->dpy, gc);
101}
102
103static void 508static void
104get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) 509get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params)
105{ 510{
106 double sigma = radius / 2.0; 511 nv sigma = radius / 2.0;
107 double scale = sqrt (2.0 * M_PI) * sigma; 512 nv scale = sqrt (2.0 * M_PI) * sigma;
108 double sum = 0.0; 513 nv sum = 0.0;
109 514
110 for (int i = 0; i < width; i++) 515 for (int i = 0; i < width; i++)
111 { 516 {
112 double x = i - width / 2; 517 nv x = i - width / 2;
113 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; 518 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
114 sum += kernel[i]; 519 sum += kernel[i];
115 } 520 }
116 521
117 params[0] = XDoubleToFixed (width); 522 params[0] = XDoubleToFixed (width);
… …
125rxvt_img::blur (int rh, int rv) 530rxvt_img::blur (int rh, int rv)
126{ 531{
127 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) 532 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
128 return clone (); 533 return clone ();
129 534
130 Display *dpy = s->display->dpy; 535 Display *dpy = s->dpy;
131 int size = max (rh, rv) * 2 + 1; 536 int size = max (rh, rv) * 2 + 1;
132 double *kernel = (double *)malloc (size * sizeof (double)); 537 nv *kernel = (nv *)malloc (size * sizeof (nv));
133 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); 538 XFixed *params = rxvt_temp_buf<XFixed> (size + 2);
134 rxvt_img *img = new rxvt_img (s, format, w, h); 539 rxvt_img *img = new_empty ();
135 540
136 XRenderPictureAttributes pa; 541 XRenderPictureAttributes pa;
137
138 pa.repeat = RepeatPad; 542 pa.repeat = RepeatPad;
139 Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa); 543 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
140 Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa); 544 Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
141 545
142 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); 546 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
143 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); 547 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
144 XFreePixmap (dpy, tmp_pm); 548 XFreePixmap (dpy, tmp_pm);
145 549
… …
161 565
162 size = rv * 2 + 1; 566 size = rv * 2 + 1;
163 get_gaussian_kernel (rv, size, kernel, params); 567 get_gaussian_kernel (rv, size, kernel, params);
164 ::swap (params[0], params[1]); 568 ::swap (params[0], params[1]);
165 569
166 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); 570 XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
167 XRenderComposite (dpy, 571 XRenderComposite (dpy,
168 PictOpSrc, 572 PictOpSrc,
169 tmp, 573 tmp,
170 None, 574 None,
171 dst, 575 dst,
… …
174 0, 0, 578 0, 0,
175 w, h); 579 w, h);
176 } 580 }
177 581
178 free (kernel); 582 free (kernel);
179 free (params); 583
180 XRenderFreePicture (dpy, src); 584 XRenderFreePicture (dpy, src);
181 XRenderFreePicture (dpy, dst); 585 XRenderFreePicture (dpy, dst);
182 XRenderFreePicture (dpy, tmp); 586 XRenderFreePicture (dpy, tmp);
183 587
184 return img; 588 return img;
185} 589}
186 590
187static Picture 591rxvt_img *
188create_xrender_mask (Display *dpy, Drawable drawable, Bool argb) 592rxvt_img::muladd (nv mul, nv add)
189{ 593{
190 Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); 594 // STEP 1: double the image width, fill all odd columns with white (==1)
191 595
192 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); 596 composer cc (this, new rxvt_img (s, format, 0, 0, w * 2, h, repeat));
193 XRenderPictureAttributes pa;
194 pa.repeat = True;
195 Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
196 597
197 XFreePixmap (dpy, pixmap); 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 };
198 605
199 return mask; 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;
200} 666}
201 667
202void 668void
203rxvt_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)
204{ 670{
671 unshare ();
672
205 Display *dpy = s->display->dpy; 673 Display *dpy = s->dpy;
206 Picture src = create_xrender_mask (dpy, pm, True);
207 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 674 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
208 675
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;
209 XRenderColor mask_c; 680 XRenderColor mask_c;
210 mask_c.red = float_to_component (r); 681
211 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))
212 mask_c.blue = float_to_component (b);
213 mask_c.alpha = float_to_component (a);
214 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 683 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
215 684
216 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);
217} 699}
218 700
219void 701void
220rxvt_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)
221{ 703{
222 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL)) 704 if (r < 0 || g < 0 || b < 0 || a < 0)
223 return; 705 rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
224 706
225 Display *dpy = s->display->dpy; 707 // premultiply (yeah, these are not exact, sue me or fix it)
226 Picture src = create_xrender_mask (dpy, pm, True); 708 r = (r * (a >> 8)) >> 8;
227 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 709 g = (g * (a >> 8)) >> 8;
710 b = (b * (a >> 8)) >> 8;
228 711
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;
229 XRenderColor mask_c; 722 XRenderColor mask_c;
230 mask_c.red = float_to_component (r);
231 mask_c.green = float_to_component (g);
232 mask_c.blue = float_to_component (b);
233 mask_c.alpha = float_to_component (a);
234 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
235 723
236 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 724 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
237}
238
239bool
240rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
241{
242 Display *dpy = s->display->dpy;
243
244 if (s->visual->c_class != TrueColor)
245 return false;
246
247 uint32_t red_mask, green_mask, blue_mask, alpha_mask;
248
249 red_mask = (uint32_t)format->direct.redMask << format->direct.red;
250 green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
251 blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue;
252 alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
253
254 int width_r = ecb_popcount32 (red_mask);
255 int width_g = ecb_popcount32 (green_mask);
256 int width_b = ecb_popcount32 (blue_mask);
257 int width_a = ecb_popcount32 (alpha_mask);
258
259 if (width_r > 8 || width_g > 8 || width_b > 8 || width_a > 8)
260 return false;
261
262 int sh_r = ecb_ctz32 (red_mask);
263 int sh_g = ecb_ctz32 (green_mask);
264 int sh_b = ecb_ctz32 (blue_mask);
265 int sh_a = ecb_ctz32 (alpha_mask);
266
267 if (width > 32767 || height > 32767)
268 return false;
269
270 XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
271 width, height, 32, 0);
272 if (!ximage)
273 return false;
274
275 if (height > INT_MAX / ximage->bytes_per_line
276 || !(ximage->data = (char *)malloc (height * ximage->bytes_per_line)))
277 {
278 XDestroyImage (ximage);
279 return false;
280 }
281
282 GC gc = XCreateGC (dpy, pm, 0, 0);
283
284 ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
285
286 int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
287 int channels = gdk_pixbuf_get_n_channels (pixbuf);
288 unsigned char *row = gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * channels;
289 char *line = ximage->data;
290
291 rgba c (0, 0, 0);
292
293 if (channels == 4 && alpha_mask == 0)
294 {
295 //pix_colors[Color_bg].get (c);
296 //TODO
297 c.r = 0xffff; c.g = 0xc0c0; c.b = 0xcbcb;//D
298 c.r >>= 8;
299 c.g >>= 8;
300 c.b >>= 8;
301 }
302
303 for (int y = 0; y < height; y++)
304 {
305 for (int x = 0; x < width; x++)
306 { 725 {
307 unsigned char *pixel = row + x * channels; 726 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &mask_c, 0, 0, 1, 1);
308 uint32_t value; 727 XRenderComposite (cc.dpy, PictOpAdd, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
309 unsigned char r, g, b, a;
310
311 if (channels == 4)
312 {
313 a = pixel[3];
314 r = (pixel[0] * a + c.r * (0xff - a)) / 0xff;
315 g = (pixel[1] * a + c.g * (0xff - a)) / 0xff;
316 b = (pixel[2] * a + c.b * (0xff - a)) / 0xff;
317 }
318 else
319 {
320 a = 0xff;
321 r = pixel[0];
322 g = pixel[1];
323 b = pixel[2];
324 }
325
326 value = ((r >> (8 - width_r)) << sh_r)
327 | ((g >> (8 - width_g)) << sh_g)
328 | ((b >> (8 - width_b)) << sh_b)
329 | ((a >> (8 - width_a)) << sh_a);
330
331 if (ximage->bits_per_pixel == 32)
332 ((uint32_t *)line)[x] = value;
333 else
334 XPutPixel (ximage, x, y, value);
335 } 728 }
336
337 row += rowstride;
338 line += ximage->bytes_per_line;
339 } 729 }
340 730
341 XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height); 731 ::swap (img->ref, ref);
342 XDestroyImage (ximage); 732 ::swap (img->pm , pm );
343 XFreeGC (dpy, gc);
344 733
345 return true; 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);
346} 748}
347 749
348rxvt_img * 750rxvt_img *
349rxvt_img::clone () 751rxvt_img::clone ()
350{ 752{
351 rxvt_img *img = new rxvt_img (s, format, w, h); 753 return new rxvt_img (*this);
754}
352 755
353 GC gc = XCreateGC (s->display->dpy, pm, 0, 0); 756rxvt_img *
354 XCopyArea (s->display->dpy, pm, img->pm, gc, 0, 0, w, h, 0, 0); 757rxvt_img::reify ()
355 XFreeGC (s->display->dpy, gc); 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);
775 }
776 else
777 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, -x, -y, 0, 0, 0, 0, w, h);
778
779 return cc;
780}
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)
791 {
792 img->w = width;
793 img->h = height;
794
795 rxvt_img *img2 = img->reify ();
796 delete img;
797 img = img2;
798 }
356 799
357 return img; 800 return img;
358} 801}
359 802
360rxvt_img * 803rxvt_img *
361rxvt_img::sub_rect (int x, int y, int width, int height, int repeat) 804rxvt_img::transform (const nv matrix[3][3])
362{ 805{
363 rxvt_img *img = new rxvt_img (s, format, width, height); 806 return transform (mat3x3 (&matrix[0][0]));
364
365 Display *dpy = s->display->dpy;
366 XRenderPictureAttributes pa;
367 pa.repeat = repeat;
368 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
369 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
370
371 XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, width, height);
372
373 XRenderFreePicture (dpy, src);
374 XRenderFreePicture (dpy, dst);
375
376 return img;
377} 807}
378 808
379rxvt_img * 809rxvt_img *
380rxvt_img::transform (int new_width, int new_height, double matrix[9], int repeat) 810rxvt_img::transform (const nv *matrix)
381{ 811{
382 rxvt_img *img = new rxvt_img (s, format, new_width, new_height); 812 mat3x3 m (matrix);
383 813
384 Display *dpy = s->display->dpy; 814 // calculate new pixel bounding box coordinates
385 XRenderPictureAttributes pa; 815 nv rmin[2], rmax[2];
386 pa.repeat = repeat; 816
387 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); 817 for (int i = 0; i < 2; ++i)
388 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); 818 {
819 nv v;
820
821 v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v;
822 v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
823 v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
824 v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
825 }
826
827 float sx = rmin [0] - x;
828 float sy = rmin [1] - y;
829
830 // TODO: adjust matrix for subpixel accuracy
831 int nx = floor (rmin [0]);
832 int ny = floor (rmin [1]);
833
834 int new_width = ceil (rmax [0] - rmin [0]);
835 int new_height = ceil (rmax [1] - rmin [1]);
836
837 mat3x3 inv = (mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y)).inverse ();
838
839 composer cc (this, new rxvt_img (s, format, nx, ny, new_width, new_height, repeat));
389 840
390 XTransform xfrm; 841 XTransform xfrm;
391 842
392 for (int i = 0; i < 3; ++i) 843 for (int i = 0; i < 3; ++i)
393 for (int j = 0; j < 3; ++j) 844 for (int j = 0; j < 3; ++j)
394 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); 845 xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
395 846
396 XRenderSetPictureFilter (dpy, src, "good", 0, 0); 847 XRenderSetPictureFilter (cc.dpy, cc.src, "good", 0, 0);
397 XRenderSetPictureTransform (dpy, src, &xfrm); 848 XRenderSetPictureTransform (cc.dpy, cc.src, &xfrm);
398 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);
399 850
400 XRenderFreePicture (dpy, src); 851 return cc;
401 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;
402 867
403 return img; 868 return img;
404} 869}
405 870
406rxvt_img * 871rxvt_img *
407rxvt_img::scale (int new_width, int new_height) 872rxvt_img::rotate (int cx, int cy, nv phi)
408{ 873{
409 double matrix[9] = { 874 move (-cx, -cy);
410 w / (double)new_width, 0, 0, 875 rxvt_img *img = transform (mat3x3::rotate (phi));
411 0, h / (double)new_height, 0, 876 move ( cx, cy);
412 0, 0, 1 877 img->move (cx, cy);
413 };
414
415 return transform (new_width, new_height, matrix);
416}
417
418rxvt_img *
419rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi, int repeat)
420{
421 double s = sin (phi);
422 double c = cos (phi);
423
424 double matrix[9] = {
425 c, -s, -c * x + s * y + x,
426 s, c, -s * x - c * y + y,
427 0, 0, 1
428 };
429
430 return transform (new_width, new_height, matrix, repeat);
431}
432
433rxvt_img *
434rxvt_img::convert_to (XRenderPictFormat *new_format)
435{
436 rxvt_img *img = new rxvt_img (s, new_format, w, h);
437
438 Display *dpy = s->display->dpy;
439 Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);
440 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
441
442 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
443
444 XRenderFreePicture (dpy, src);
445 XRenderFreePicture (dpy, dst);
446 878
447 return img; 879 return img;
448} 880}
449 881
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
450#endif 969#endif
451 970

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