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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.32 by root, Thu Jun 7 07:53:12 2012 UTC vs.
Revision 1.104 by root, Sat Jul 14 08:27:55 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
31typedef rxvt_img::nv nv;
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
7rxvt_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)
8: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), 251: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
9 pm(0), refcnt(0) 252 pm(0), ref(0)
10{ 253{
11} 254}
12 255
13rxvt_img::rxvt_img (const rxvt_img &img) 256rxvt_img::rxvt_img (const rxvt_img &img)
14: s(img.s), x(img.x), y(img.y), w(img.w), h(img.h), format(img.format), repeat(img.repeat), pm(img.pm), refcnt(img.refcnt) 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)
15{ 258{
16 if (refcnt)
17 ++*refcnt; 259 ++ref->cnt;
18} 260}
19
20#if 0
21rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap)
22: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap)
23{
24}
25#endif
26 261
27rxvt_img * 262rxvt_img *
28rxvt_img::new_from_root (rxvt_screen *s) 263rxvt_img::new_from_root (rxvt_screen *s)
29{ 264{
30 Display *dpy = s->display->dpy; 265 Display *dpy = s->dpy;
31 unsigned int root_pm_w, root_pm_h; 266 unsigned int root_pm_w, root_pm_h;
32 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]);
33 if (root_pixmap == None) 268 if (root_pixmap == None)
34 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]);
35 270
36 if (root_pixmap == None) 271 if (root_pixmap == None)
37 return 0; 272 return 0;
38 273
39 Window wdummy; 274 Window wdummy;
… …
44 return 0; 279 return 0;
45 280
46 rxvt_img *img = new rxvt_img ( 281 rxvt_img *img = new rxvt_img (
47 s, 282 s,
48 XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)), 283 XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
284 0,
285 0,
49 root_pm_w, 286 root_pm_w,
50 root_pm_h 287 root_pm_h
51 ); 288 );
52 289
53 img->pm = root_pixmap; 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);
54 389
55 return img; 390 return img;
56} 391}
57 392
58rxvt_img * 393rxvt_img *
… …
62 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); 397 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
63 398
64 if (!pb) 399 if (!pb)
65 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); 400 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
66 401
67 rxvt_img *img = new rxvt_img ( 402 rxvt_img *img = new_from_pixbuf (s, pb);
68 s,
69 XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
70 gdk_pixbuf_get_width (pb),
71 gdk_pixbuf_get_height (pb)
72 );
73 img->alloc ();
74 img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);
75 403
76 g_object_unref (pb); 404 g_object_unref (pb);
77 405
78 return img; 406 return img;
79} 407}
408
409# endif
80 410
81void 411void
82rxvt_img::destroy () 412rxvt_img::destroy ()
83{ 413{
84 if (!refcnt || --*refcnt) 414 if (--ref->cnt)
85 return; 415 return;
86 416
87 if (pm) 417 if (pm && ref->ours)
88 XFreePixmap (s->display->dpy, pm); 418 XFreePixmap (s->dpy, pm);
89 419
90 delete refcnt; 420 delete ref;
91} 421}
92 422
93rxvt_img::~rxvt_img () 423rxvt_img::~rxvt_img ()
94{ 424{
95 destroy (); 425 destroy ();
96} 426}
97 427
98void 428void
99rxvt_img::alloc () 429rxvt_img::alloc ()
100{ 430{
101 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); 431 pm = XCreatePixmap (s->dpy, s->display->root, w, h, format->depth);
102 refcnt = new int (1); 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;
103} 454}
104 455
105void 456void
106rxvt_img::unshare () 457rxvt_img::unshare ()
107{ 458{
108 if (refcnt && *refcnt == 1) 459 if (ref->cnt == 1 && ref->ours)
109 return; 460 return;
110 461
111 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); 462 Pixmap pm2 = XCreatePixmap (s->dpy, s->display->root, ref->w, ref->h, format->depth);
112 GC gc = XCreateGC (s->display->dpy, pm, 0, 0); 463 GC gc = XCreateGC (s->dpy, pm, 0, 0);
113 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0); 464 XCopyArea (s->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
114 XFreeGC (s->display->dpy, gc); 465 XFreeGC (s->dpy, gc);
115 466
116 destroy (); 467 destroy ();
117 468
118 pm = pm2; 469 pm = pm2;
119 refcnt = new int (1); 470 ref = new pixref (ref->w, ref->h);
120} 471}
121 472
122void 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
123rxvt_img::fill (const rxvt_color &c) 485rxvt_img::fill (const rgba &c)
124{ 486{
125 XGCValues gcv; 487 fill (c, 0, 0, w, h);
126 gcv.foreground = c; 488}
127 GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); 489
128 XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); 490void
129 XFreeGC (s->display->dpy, gc); 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
500 rxvt_img *img = cc;
501
502 ::swap (img->ref, ref);
503 ::swap (img->pm , pm );
504
505 delete img;
130} 506}
131 507
132static void 508static void
133get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) 509get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params)
134{ 510{
135 double sigma = radius / 2.0; 511 nv sigma = radius / 2.0;
136 double scale = sqrt (2.0 * M_PI) * sigma; 512 nv scale = sqrt (2.0 * M_PI) * sigma;
137 double sum = 0.0; 513 nv sum = 0.0;
138 514
139 for (int i = 0; i < width; i++) 515 for (int i = 0; i < width; i++)
140 { 516 {
141 double x = i - width / 2; 517 nv x = i - width / 2;
142 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; 518 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
143 sum += kernel[i]; 519 sum += kernel[i];
144 } 520 }
145 521
146 params[0] = XDoubleToFixed (width); 522 params[0] = XDoubleToFixed (width);
… …
154rxvt_img::blur (int rh, int rv) 530rxvt_img::blur (int rh, int rv)
155{ 531{
156 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) 532 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
157 return clone (); 533 return clone ();
158 534
159 Display *dpy = s->display->dpy; 535 Display *dpy = s->dpy;
160 int size = max (rh, rv) * 2 + 1; 536 int size = max (rh, rv) * 2 + 1;
161 double *kernel = (double *)malloc (size * sizeof (double)); 537 nv *kernel = (nv *)malloc (size * sizeof (nv));
162 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); 538 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
163 rxvt_img *img = new rxvt_img (s, format, w, h); 539 rxvt_img *img = new_empty ();
164 img->alloc ();
165 540
166 XRenderPictureAttributes pa; 541 XRenderPictureAttributes pa;
167
168 pa.repeat = RepeatPad; 542 pa.repeat = RepeatPad;
169 Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa); 543 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
170 Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa); 544 Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
171 545
172 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); 546 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
173 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); 547 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
174 XFreePixmap (dpy, tmp_pm); 548 XFreePixmap (dpy, tmp_pm);
175 549
… …
191 565
192 size = rv * 2 + 1; 566 size = rv * 2 + 1;
193 get_gaussian_kernel (rv, size, kernel, params); 567 get_gaussian_kernel (rv, size, kernel, params);
194 ::swap (params[0], params[1]); 568 ::swap (params[0], params[1]);
195 569
196 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); 570 XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
197 XRenderComposite (dpy, 571 XRenderComposite (dpy,
198 PictOpSrc, 572 PictOpSrc,
199 tmp, 573 tmp,
200 None, 574 None,
201 dst, 575 dst,
… …
205 w, h); 579 w, h);
206 } 580 }
207 581
208 free (kernel); 582 free (kernel);
209 free (params); 583 free (params);
584
210 XRenderFreePicture (dpy, src); 585 XRenderFreePicture (dpy, src);
211 XRenderFreePicture (dpy, dst); 586 XRenderFreePicture (dpy, dst);
212 XRenderFreePicture (dpy, tmp); 587 XRenderFreePicture (dpy, tmp);
213 588
214 return img; 589 return img;
215} 590}
216 591
217static Picture 592rxvt_img *
218create_xrender_mask (Display *dpy, Drawable drawable, Bool argb) 593rxvt_img::muladd (nv mul, nv add)
219{ 594{
220 Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); 595 // STEP 1: double the image width, fill all odd columns with white (==1)
221 596
222 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); 597 composer cc (this, new rxvt_img (s, format, 0, 0, w * 2, h, repeat));
223 XRenderPictureAttributes pa;
224 pa.repeat = True;
225 Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
226 598
227 XFreePixmap (dpy, pixmap); 599 // why the hell does XRenderSetPictureTransform want a writable matrix :(
600 // that keeps us from just static const'ing this matrix.
601 XTransform h_double = {
602 0x08000, 0, 0,
603 0, 0x10000, 0,
604 0, 0, 0x10000
605 };
228 606
229 return mask; 607 XRenderSetPictureFilter (cc.dpy, cc.src, "nearest", 0, 0);
608 XRenderSetPictureTransform (cc.dpy, cc.src, &h_double);
609 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
610
611 cc.mask (false, 2, 1);
612
613 static const XRenderColor c0 = { 0, 0, 0, 0 };
614 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c0, 0, 0, 1, 1);
615 static const XRenderColor c1 = { 65535, 65535, 65535, 65535 };
616 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c1, 1, 0, 1, 1);
617
618 Picture white = XRenderCreateSolidFill (cc.dpy, &c1);
619
620 XRenderComposite (cc.dpy, PictOpOver, white, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
621
622 XRenderFreePicture (cc.dpy, white);
623
624 // STEP 2: convolve the image with a 3x1 filter
625 // a 2x1 filter would obviously suffice, but given the total lack of specification
626 // for xrender, I expect different xrender implementations to randomly diverge.
627 // we also halve the image, and hope for the best (again, for lack of specs).
628 composer cc2 (cc.dstimg);
629
630 XFixed kernel [] = {
631 XDoubleToFixed (3), XDoubleToFixed (1),
632 XDoubleToFixed (0), XDoubleToFixed (mul), XDoubleToFixed (add)
633 };
634
635 XTransform h_halve = {
636 0x20000, 0, 0,
637 0, 0x10000, 0,
638 0, 0, 0x10000
639 };
640
641 XRenderSetPictureFilter (cc.dpy, cc2.src, "nearest", 0, 0);
642 XRenderSetPictureTransform (cc.dpy, cc2.src, &h_halve);
643 XRenderSetPictureFilter (cc.dpy, cc2.src, FilterConvolution, kernel, ecb_array_length (kernel));
644
645 XRenderComposite (cc.dpy, PictOpSrc, cc2.src, None, cc2.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
646
647 return cc2;
648}
649
650ecb_noinline static void
651extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
652{
653 int32_t x = clamp (c, cl0, cl1);
654 c -= x;
655 xc = x;
656}
657
658ecb_noinline static bool
659extract (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)
660{
661 extract (cl0, cl1, r, xr);
662 extract (cl0, cl1, g, xg);
663 extract (cl0, cl1, b, xb);
664 extract (cl0, cl1, a, xa);
665
666 return xr | xg | xb | xa;
230} 667}
231 668
232void 669void
233rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a) 670rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
234{ 671{
672 unshare ();
673
235 Display *dpy = s->display->dpy; 674 Display *dpy = s->dpy;
236 Picture src = create_xrender_mask (dpy, pm, True);
237 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 675 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
238 676
677 // loop should not be needed for brightness, as only -1..1 makes sense
678 //while (r | g | b | a)
679 {
680 unsigned short xr, xg, xb, xa;
239 XRenderColor mask_c; 681 XRenderColor mask_c;
240 mask_c.red = r; 682
241 mask_c.green = g; 683 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
242 mask_c.blue = b;
243 mask_c.alpha = a;
244 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 684 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
245 685
246 XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 686 if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
687 {
688 XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
689 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
690 mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
691 mask_c.green = -mask_c.green;
692 mask_c.blue = -mask_c.blue;
693 mask_c.alpha = -mask_c.alpha;
694 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
695 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
696 }
697 }
247 698
248 XRenderFreePicture (dpy, src);
249 XRenderFreePicture (dpy, dst); 699 XRenderFreePicture (dpy, dst);
250} 700}
251 701
252void 702void
253rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a) 703rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
254{ 704{
255 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL)) 705 if (r < 0 || g < 0 || b < 0 || a < 0)
256 return; 706 rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
257 707
258 Display *dpy = s->display->dpy; 708 // premultiply (yeah, these are not exact, sue me or fix it)
259 Picture src = create_xrender_mask (dpy, pm, True); 709 r = (r * (a >> 8)) >> 8;
260 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 710 g = (g * (a >> 8)) >> 8;
711 b = (b * (a >> 8)) >> 8;
261 712
713 composer cc (this);
714 rxvt_img *img = cc;
715 img->fill (rgba (0, 0, 0, 0));
716
717 cc.mask (true);
718
719 //TODO: this operator does not yet implement some useful contrast
720 while (r | g | b | a)
721 {
722 unsigned short xr, xg, xb, xa;
262 XRenderColor mask_c; 723 XRenderColor mask_c;
263 mask_c.red = r;
264 mask_c.green = g;
265 mask_c.blue = b;
266 mask_c.alpha = a;
267 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
268 724
269 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 725 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
270
271 XRenderFreePicture (dpy, src);
272 XRenderFreePicture (dpy, dst);
273}
274
275bool
276rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
277{
278 Display *dpy = s->display->dpy;
279
280 if (s->visual->c_class != TrueColor)
281 return false;
282
283 uint32_t red_mask, green_mask, blue_mask, alpha_mask;
284
285 red_mask = (uint32_t)format->direct.redMask << format->direct.red;
286 green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
287 blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue;
288 alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
289
290 int width_r = ecb_popcount32 (red_mask);
291 int width_g = ecb_popcount32 (green_mask);
292 int width_b = ecb_popcount32 (blue_mask);
293 int width_a = ecb_popcount32 (alpha_mask);
294
295 if (width_r > 8 || width_g > 8 || width_b > 8 || width_a > 8)
296 return false;
297
298 int sh_r = ecb_ctz32 (red_mask);
299 int sh_g = ecb_ctz32 (green_mask);
300 int sh_b = ecb_ctz32 (blue_mask);
301 int sh_a = ecb_ctz32 (alpha_mask);
302
303 if (width > 32767 || height > 32767)
304 return false;
305
306 XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
307 width, height, 32, 0);
308 if (!ximage)
309 return false;
310
311 if (height > INT_MAX / ximage->bytes_per_line
312 || !(ximage->data = (char *)malloc (height * ximage->bytes_per_line)))
313 {
314 XDestroyImage (ximage);
315 return false;
316 }
317
318 GC gc = XCreateGC (dpy, pm, 0, 0);
319
320 ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
321
322 int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
323 int channels = gdk_pixbuf_get_n_channels (pixbuf);
324 unsigned char *row = gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * channels;
325 char *line = ximage->data;
326
327 for (int y = 0; y < height; y++)
328 {
329 for (int x = 0; x < width; x++)
330 { 726 {
331 unsigned char *pixel = row + x * channels; 727 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &mask_c, 0, 0, 1, 1);
332 uint32_t value; 728 XRenderComposite (cc.dpy, PictOpAdd, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
333 unsigned char r, g, b, a;
334
335 if (channels == 4)
336 {
337 a = pixel[3];
338 r = pixel[0] * a / 0xff;
339 g = pixel[1] * a / 0xff;
340 b = pixel[2] * a / 0xff;
341 }
342 else
343 {
344 a = 0xff;
345 r = pixel[0];
346 g = pixel[1];
347 b = pixel[2];
348 }
349
350 value = ((r >> (8 - width_r)) << sh_r)
351 | ((g >> (8 - width_g)) << sh_g)
352 | ((b >> (8 - width_b)) << sh_b)
353 | ((a >> (8 - width_a)) << sh_a);
354
355 if (ximage->bits_per_pixel == 32)
356 ((uint32_t *)line)[x] = value;
357 else
358 XPutPixel (ximage, x, y, value);
359 } 729 }
360
361 row += rowstride;
362 line += ximage->bytes_per_line;
363 } 730 }
364 731
365 XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height); 732 ::swap (img->ref, ref);
366 XDestroyImage (ximage); 733 ::swap (img->pm , pm );
367 XFreeGC (dpy, gc);
368 734
369 return true; 735 delete img;
736}
737
738void
739rxvt_img::draw (rxvt_img *img, int op, nv mask)
740{
741 unshare ();
742
743 composer cc (img, this);
744
745 if (mask != 1.)
746 cc.mask (rgba (0, 0, 0, float_to_component (mask)));
747
748 XRenderComposite (cc.dpy, op, cc.src, cc.msk, cc.dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h);
370} 749}
371 750
372rxvt_img * 751rxvt_img *
373rxvt_img::clone () 752rxvt_img::clone ()
374{ 753{
375 return new rxvt_img (*this); 754 return new rxvt_img (*this);
376} 755}
377 756
378rxvt_img * 757rxvt_img *
758rxvt_img::reify ()
759{
760 if (x == 0 && y == 0 && w == ref->w && h == ref->h)
761 return clone ();
762
763 // add an alpha channel if...
764 bool alpha = !format->direct.alphaMask // pixmap has none yet
765 && (x || y) // we need one because of non-zero offset
766 && repeat == RepeatNone; // and we have no good pixels to fill with
767
768 composer cc (this, new rxvt_img (s, alpha ? find_alpha_format_for (s->dpy, format) : format,
769 0, 0, w, h, repeat));
770
771 if (repeat == RepeatNone)
772 {
773 XRenderColor rc = { 0, 0, 0, 0 };
774 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
775 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
776 }
777 else
778 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, -x, -y, 0, 0, 0, 0, w, h);
779
780 return cc;
781}
782
783rxvt_img *
379rxvt_img::sub_rect (int x, int y, int width, int height) 784rxvt_img::sub_rect (int x, int y, int width, int height)
380{ 785{
381 rxvt_img *img = new rxvt_img (s, format, width, height); 786 rxvt_img *img = clone ();
382 img->alloc ();
383 787
384 Display *dpy = s->display->dpy; 788 img->x -= x;
385 XRenderPictureAttributes pa; 789 img->y -= y;
386 pa.repeat = repeat;
387 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
388 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
389 790
390 XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, width, height); 791 if (w != width || h != height)
792 {
793 img->w = width;
794 img->h = height;
391 795
392 XRenderFreePicture (dpy, src); 796 rxvt_img *img2 = img->reify ();
393 XRenderFreePicture (dpy, dst); 797 delete img;
798 img = img2;
799 }
394 800
395 return img; 801 return img;
396} 802}
397 803
398rxvt_img * 804rxvt_img *
399rxvt_img::transform (int new_width, int new_height, double matrix[9]) 805rxvt_img::transform (const nv matrix[3][3])
400{ 806{
401 rxvt_img *img = new rxvt_img (s, format, new_width, new_height); 807 return transform (mat3x3 (&matrix[0][0]));
402 img->alloc (); 808}
403 809
404 Display *dpy = s->display->dpy; 810rxvt_img *
405 XRenderPictureAttributes pa; 811rxvt_img::transform (const nv *matrix)
406 pa.repeat = repeat; 812{
407 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); 813 mat3x3 m (matrix);
408 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); 814
815 // calculate new pixel bounding box coordinates
816 nv rmin[2], rmax[2];
817
818 for (int i = 0; i < 2; ++i)
819 {
820 nv v;
821
822 v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v;
823 v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
824 v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
825 v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
826 }
827
828 float sx = rmin [0] - x;
829 float sy = rmin [1] - y;
830
831 // TODO: adjust matrix for subpixel accuracy
832 int nx = floor (rmin [0]);
833 int ny = floor (rmin [1]);
834
835 int new_width = ceil (rmax [0] - rmin [0]);
836 int new_height = ceil (rmax [1] - rmin [1]);
837
838 mat3x3 inv = (mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y)).inverse ();
839
840 composer cc (this, new rxvt_img (s, format, nx, ny, new_width, new_height, repeat));
409 841
410 XTransform xfrm; 842 XTransform xfrm;
411 843
412 for (int i = 0; i < 3; ++i) 844 for (int i = 0; i < 3; ++i)
413 for (int j = 0; j < 3; ++j) 845 for (int j = 0; j < 3; ++j)
414 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); 846 xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
415 847
416 XRenderSetPictureFilter (dpy, src, "good", 0, 0); 848 XRenderSetPictureFilter (cc.dpy, cc.src, "good", 0, 0);
417 XRenderSetPictureTransform (dpy, src, &xfrm); 849 XRenderSetPictureTransform (cc.dpy, cc.src, &xfrm);
418 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); 850 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
419 851
420 XRenderFreePicture (dpy, src); 852 return cc;
421 XRenderFreePicture (dpy, dst); 853}
854
855rxvt_img *
856rxvt_img::scale (int new_width, int new_height)
857{
858 if (w == new_width && h == new_height)
859 return clone ();
860
861 int old_repeat_mode = repeat;
862 repeat = RepeatPad; // not right, but xrender can't properly scale it seems
863
864 rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h));
865
866 repeat = old_repeat_mode;
867 img->repeat = repeat;
422 868
423 return img; 869 return img;
424} 870}
425 871
426rxvt_img * 872rxvt_img *
427rxvt_img::scale (int new_width, int new_height) 873rxvt_img::rotate (int cx, int cy, nv phi)
428{ 874{
429 double matrix[9] = { 875 move (-cx, -cy);
430 w / (double)new_width, 0, 0, 876 rxvt_img *img = transform (mat3x3::rotate (phi));
431 0, h / (double)new_height, 0, 877 move ( cx, cy);
432 0, 0, 1 878 img->move (cx, cy);
433 };
434 879
435 return transform (new_width, new_height, matrix); 880 return img;
436} 881}
437 882
438rxvt_img * 883rxvt_img *
439rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
440{
441 double s = sin (phi);
442 double c = cos (phi);
443
444 double matrix[9] = {
445 c, -s, -c * x + s * y + x,
446 s, c, -s * x - c * y + y,
447 0, 0, 1
448 };
449
450 return transform (new_width, new_height, matrix);
451}
452
453rxvt_img *
454rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg) 884rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
455{ 885{
456 if (new_format == format) 886 if (new_format == format)
457 return clone (); 887 return clone ();
458 888
459 rxvt_img *img = new rxvt_img (s, new_format, w, h); 889 composer cc (this, new rxvt_img (s, new_format, x, y, w, h, repeat));
460 img->alloc ();
461 890
462 Display *dpy = s->display->dpy;
463 Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);
464 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
465 int op = PictOpSrc; 891 int op = PictOpSrc;
466 892
467 if (format->direct.alphaMask && !new_format->direct.alphaMask) 893 if (format->direct.alphaMask && !new_format->direct.alphaMask)
468 { 894 {
469 // does it have to be that complicated 895 // does it have to be that complicated
470 rgba c;
471 bg.get (c);
472
473 XRenderColor rc = { c.r, c.g, c.b, 0xffff }; 896 XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
474 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); 897 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);
475 898
476 op = PictOpOver; 899 op = PictOpOver;
477 } 900 }
478 901
479 XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 902 XRenderComposite (cc.dpy, op, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
480 903
481 XRenderFreePicture (dpy, src);
482 XRenderFreePicture (dpy, dst);
483
484 return img; 904 return cc;
485} 905}
486 906
487rxvt_img * 907rxvt_img *
488rxvt_img::blend (rxvt_img *img, double factor) 908rxvt_img::tint (const rgba &c)
489{ 909{
490 rxvt_img *img2 = clone (); 910 composer cc (this);
491 Display *dpy = s->display->dpy; 911 cc.mask (true);
492 Picture src = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); 912 cc.fill (c);
493 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
494 Picture mask = create_xrender_mask (dpy, img->pm, False);
495 913
496 XRenderColor mask_c;
497
498 mask_c.alpha = float_to_component (factor);
499 mask_c.red =
500 mask_c.green =
501 mask_c.blue = 0;
502 XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
503
504 XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); 914 XRenderComposite (cc.dpy, PictOpSrc, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
505 915
506 XRenderFreePicture (dpy, src);
507 XRenderFreePicture (dpy, dst);
508 XRenderFreePicture (dpy, mask);
509
510 return img2; 916 return cc;
917}
918
919rxvt_img *
920rxvt_img::filter (const char *name, int nparams, nv *params)
921{
922 composer cc (this);
923
924 XFixed *xparams = rxvt_temp_buf<XFixed> (nparams);
925
926 for (int i = 0; i < nparams; ++i)
927 xparams [i] = XDoubleToFixed (params [i]);
928
929 XRenderSetPictureFilter (cc.dpy, cc.src, name, xparams, nparams);
930
931 XRenderComposite (cc.dpy, PictOpSrc, cc.src, 0, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
932
933 return cc;
511} 934}
512 935
513#endif 936#endif
514 937

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