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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.33 by root, Thu Jun 7 08:12:55 2012 UTC vs.
Revision 1.100 by root, Mon Jul 2 02:01:41 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 x = 1, int y = 1)
176 {
177 Pixmap pixmap = XCreatePixmap (dpy, srcimg->pm, x, y, 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 x, int y, 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(x), y(y), 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;
… …
51 root_pm_w, 286 root_pm_w,
52 root_pm_h 287 root_pm_h
53 ); 288 );
54 289
55 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 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);
56 396
57 return img; 397 return img;
58} 398}
59 399
60rxvt_img * 400rxvt_img *
… …
64 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); 404 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
65 405
66 if (!pb) 406 if (!pb)
67 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); 407 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
68 408
69 rxvt_img *img = new rxvt_img ( 409 rxvt_img *img = new_from_pixbuf (s, pb);
70 s,
71 XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
72 0,
73 0,
74 gdk_pixbuf_get_width (pb),
75 gdk_pixbuf_get_height (pb)
76 );
77 img->alloc ();
78 img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);
79 410
80 g_object_unref (pb); 411 g_object_unref (pb);
81 412
82 return img; 413 return img;
83} 414}
415
416# endif
84 417
85void 418void
86rxvt_img::destroy () 419rxvt_img::destroy ()
87{ 420{
88 if (!refcnt || --*refcnt) 421 if (--ref->cnt)
89 return; 422 return;
90 423
91 if (pm) 424 if (pm && ref->ours)
92 XFreePixmap (s->display->dpy, pm); 425 XFreePixmap (s->dpy, pm);
93 426
94 delete refcnt; 427 delete ref;
95} 428}
96 429
97rxvt_img::~rxvt_img () 430rxvt_img::~rxvt_img ()
98{ 431{
99 destroy (); 432 destroy ();
100} 433}
101 434
102void 435void
103rxvt_img::alloc () 436rxvt_img::alloc ()
104{ 437{
105 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); 438 pm = XCreatePixmap (s->dpy, s->display->root, w, h, format->depth);
106 refcnt = new int (1); 439 ref = new pixref (w, h);
440}
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;
107} 461}
108 462
109void 463void
110rxvt_img::unshare () 464rxvt_img::unshare ()
111{ 465{
112 if (refcnt && *refcnt == 1) 466 if (ref->cnt == 1 && ref->ours)
113 return; 467 return;
114 468
115 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); 469 Pixmap pm2 = XCreatePixmap (s->dpy, s->display->root, ref->w, ref->h, format->depth);
116 GC gc = XCreateGC (s->display->dpy, pm, 0, 0); 470 GC gc = XCreateGC (s->dpy, pm, 0, 0);
117 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0); 471 XCopyArea (s->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
118 XFreeGC (s->display->dpy, gc); 472 XFreeGC (s->dpy, gc);
119 473
120 destroy (); 474 destroy ();
121 475
122 pm = pm2; 476 pm = pm2;
123 refcnt = new int (1); 477 ref = new pixref (ref->w, ref->h);
124} 478}
125 479
126void 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
127rxvt_img::fill (const rxvt_color &c) 492rxvt_img::fill (const rgba &c)
128{ 493{
129 XGCValues gcv; 494 fill (c, 0, 0, w, h);
130 gcv.foreground = c; 495}
131 GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); 496
132 XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); 497void
133 XFreeGC (s->display->dpy, gc); 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;
134} 513}
135 514
136static void 515static void
137get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) 516get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params)
138{ 517{
139 double sigma = radius / 2.0; 518 nv sigma = radius / 2.0;
140 double scale = sqrt (2.0 * M_PI) * sigma; 519 nv scale = sqrt (2.0 * M_PI) * sigma;
141 double sum = 0.0; 520 nv sum = 0.0;
142 521
143 for (int i = 0; i < width; i++) 522 for (int i = 0; i < width; i++)
144 { 523 {
145 double x = i - width / 2; 524 nv x = i - width / 2;
146 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; 525 kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
147 sum += kernel[i]; 526 sum += kernel[i];
148 } 527 }
149 528
150 params[0] = XDoubleToFixed (width); 529 params[0] = XDoubleToFixed (width);
… …
158rxvt_img::blur (int rh, int rv) 537rxvt_img::blur (int rh, int rv)
159{ 538{
160 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) 539 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
161 return clone (); 540 return clone ();
162 541
163 Display *dpy = s->display->dpy; 542 Display *dpy = s->dpy;
164 int size = max (rh, rv) * 2 + 1; 543 int size = max (rh, rv) * 2 + 1;
165 double *kernel = (double *)malloc (size * sizeof (double)); 544 nv *kernel = (nv *)malloc (size * sizeof (nv));
166 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); 545 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
167 rxvt_img *img = new rxvt_img (s, format, x, y, w, h); 546 rxvt_img *img = new_empty ();
168 img->alloc ();
169 547
170 XRenderPictureAttributes pa; 548 XRenderPictureAttributes pa;
171
172 pa.repeat = RepeatPad; 549 pa.repeat = RepeatPad;
173 Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa); 550 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
174 Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa); 551 Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
175 552
176 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); 553 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
177 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); 554 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
178 XFreePixmap (dpy, tmp_pm); 555 XFreePixmap (dpy, tmp_pm);
179 556
… …
195 572
196 size = rv * 2 + 1; 573 size = rv * 2 + 1;
197 get_gaussian_kernel (rv, size, kernel, params); 574 get_gaussian_kernel (rv, size, kernel, params);
198 ::swap (params[0], params[1]); 575 ::swap (params[0], params[1]);
199 576
200 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); 577 XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
201 XRenderComposite (dpy, 578 XRenderComposite (dpy,
202 PictOpSrc, 579 PictOpSrc,
203 tmp, 580 tmp,
204 None, 581 None,
205 dst, 582 dst,
… …
209 w, h); 586 w, h);
210 } 587 }
211 588
212 free (kernel); 589 free (kernel);
213 free (params); 590 free (params);
591
214 XRenderFreePicture (dpy, src); 592 XRenderFreePicture (dpy, src);
215 XRenderFreePicture (dpy, dst); 593 XRenderFreePicture (dpy, dst);
216 XRenderFreePicture (dpy, tmp); 594 XRenderFreePicture (dpy, tmp);
217 595
218 return img; 596 return img;
219} 597}
220 598
221static Picture 599ecb_noinline static void
222create_xrender_mask (Display *dpy, Drawable drawable, Bool argb) 600extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
223{ 601{
224 Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); 602 int32_t x = clamp (c, cl0, cl1);
603 c -= x;
604 xc = x;
605}
225 606
226 XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); 607ecb_noinline static bool
227 XRenderPictureAttributes pa; 608extract (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)
228 pa.repeat = True; 609{
229 Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa); 610 extract (cl0, cl1, r, xr);
611 extract (cl0, cl1, g, xg);
612 extract (cl0, cl1, b, xb);
613 extract (cl0, cl1, a, xa);
230 614
231 XFreePixmap (dpy, pixmap); 615 return xr | xg | xb | xa;
232
233 return mask;
234} 616}
235 617
236void 618void
237rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a) 619rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
238{ 620{
621 unshare ();
622
239 Display *dpy = s->display->dpy; 623 Display *dpy = s->dpy;
240 Picture src = create_xrender_mask (dpy, pm, True);
241 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 624 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
242 625
626 // loop should not be needed for brightness, as only -1..1 makes sense
627 //while (r | g | b | a)
628 {
629 unsigned short xr, xg, xb, xa;
243 XRenderColor mask_c; 630 XRenderColor mask_c;
244 mask_c.red = r; 631
245 mask_c.green = g; 632 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
246 mask_c.blue = b;
247 mask_c.alpha = a;
248 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 633 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
249 634
250 XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 635 if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
636 {
637 XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
638 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
639 mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
640 mask_c.green = -mask_c.green;
641 mask_c.blue = -mask_c.blue;
642 mask_c.alpha = -mask_c.alpha;
643 XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
644 XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
645 }
646 }
251 647
252 XRenderFreePicture (dpy, src);
253 XRenderFreePicture (dpy, dst); 648 XRenderFreePicture (dpy, dst);
254} 649}
255 650
256void 651void
257rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a) 652rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
258{ 653{
259 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL)) 654 if (r < 0 || g < 0 || b < 0 || a < 0)
260 return; 655 rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
261 656
262 Display *dpy = s->display->dpy; 657 // premultiply (yeah, these are not exact, sue me or fix it)
263 Picture src = create_xrender_mask (dpy, pm, True); 658 r = (r * (a >> 8)) >> 8;
264 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 659 g = (g * (a >> 8)) >> 8;
660 b = (b * (a >> 8)) >> 8;
265 661
662 composer cc (this);
663 rxvt_img *img = cc;
664 img->fill (rgba (0, 0, 0, 0));
665
666 cc.mask (true);
667
668 //TODO: this operator does not yet implement some useful contrast
669 while (r | g | b | a)
670 {
671 unsigned short xr, xg, xb, xa;
266 XRenderColor mask_c; 672 XRenderColor mask_c;
267 mask_c.red = r;
268 mask_c.green = g;
269 mask_c.blue = b;
270 mask_c.alpha = a;
271 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
272 673
273 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 674 if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
274
275 XRenderFreePicture (dpy, src);
276 XRenderFreePicture (dpy, dst);
277}
278
279bool
280rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
281{
282 Display *dpy = s->display->dpy;
283
284 if (s->visual->c_class != TrueColor)
285 return false;
286
287 uint32_t red_mask, green_mask, blue_mask, alpha_mask;
288
289 red_mask = (uint32_t)format->direct.redMask << format->direct.red;
290 green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
291 blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue;
292 alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
293
294 int width_r = ecb_popcount32 (red_mask);
295 int width_g = ecb_popcount32 (green_mask);
296 int width_b = ecb_popcount32 (blue_mask);
297 int width_a = ecb_popcount32 (alpha_mask);
298
299 if (width_r > 8 || width_g > 8 || width_b > 8 || width_a > 8)
300 return false;
301
302 int sh_r = ecb_ctz32 (red_mask);
303 int sh_g = ecb_ctz32 (green_mask);
304 int sh_b = ecb_ctz32 (blue_mask);
305 int sh_a = ecb_ctz32 (alpha_mask);
306
307 if (width > 32767 || height > 32767)
308 return false;
309
310 XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
311 width, height, 32, 0);
312 if (!ximage)
313 return false;
314
315 if (height > INT_MAX / ximage->bytes_per_line
316 || !(ximage->data = (char *)malloc (height * ximage->bytes_per_line)))
317 {
318 XDestroyImage (ximage);
319 return false;
320 }
321
322 GC gc = XCreateGC (dpy, pm, 0, 0);
323
324 ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
325
326 int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
327 int channels = gdk_pixbuf_get_n_channels (pixbuf);
328 unsigned char *row = gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * channels;
329 char *line = ximage->data;
330
331 for (int y = 0; y < height; y++)
332 {
333 for (int x = 0; x < width; x++)
334 { 675 {
335 unsigned char *pixel = row + x * channels; 676 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &mask_c, 0, 0, 1, 1);
336 uint32_t value; 677 XRenderComposite (cc.dpy, PictOpAdd, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
337 unsigned char r, g, b, a;
338
339 if (channels == 4)
340 {
341 a = pixel[3];
342 r = pixel[0] * a / 0xff;
343 g = pixel[1] * a / 0xff;
344 b = pixel[2] * a / 0xff;
345 }
346 else
347 {
348 a = 0xff;
349 r = pixel[0];
350 g = pixel[1];
351 b = pixel[2];
352 }
353
354 value = ((r >> (8 - width_r)) << sh_r)
355 | ((g >> (8 - width_g)) << sh_g)
356 | ((b >> (8 - width_b)) << sh_b)
357 | ((a >> (8 - width_a)) << sh_a);
358
359 if (ximage->bits_per_pixel == 32)
360 ((uint32_t *)line)[x] = value;
361 else
362 XPutPixel (ximage, x, y, value);
363 } 678 }
364
365 row += rowstride;
366 line += ximage->bytes_per_line;
367 } 679 }
368 680
369 XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height); 681 ::swap (img->ref, ref);
370 XDestroyImage (ximage); 682 ::swap (img->pm , pm );
371 XFreeGC (dpy, gc);
372 683
373 return true; 684 delete img;
685}
686
687void
688rxvt_img::draw (rxvt_img *img, int op, nv mask)
689{
690 unshare ();
691
692 composer cc (img, this);
693
694 if (mask != 1.)
695 cc.mask (rgba (0, 0, 0, float_to_component (mask)));
696
697 XRenderComposite (cc.dpy, op, cc.src, cc.msk, cc.dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h);
374} 698}
375 699
376rxvt_img * 700rxvt_img *
377rxvt_img::clone () 701rxvt_img::clone ()
378{ 702{
… …
380} 704}
381 705
382rxvt_img * 706rxvt_img *
383rxvt_img::reify () 707rxvt_img::reify ()
384{ 708{
385 rxvt_img *img = new rxvt_img (s, format, 0, 0, w, h); 709 if (x == 0 && y == 0 && w == ref->w && h == ref->h)
386 img->alloc (); 710 return clone ();
387 711
388 // todo, if x==0 and y==0 and w==real width we could clone
389 // but that involves an rtt to find pixmap width.
390
391 Display *dpy = s->display->dpy; 712 Display *dpy = s->dpy;
392 XRenderPictureAttributes pa; 713
393 pa.repeat = repeat; 714 // add an alpha channel if...
394 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); 715 bool alpha = !format->direct.alphaMask // pixmap has none yet
395 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); 716 && (x || y) // we need one because of non-zero offset
396 717 && repeat == RepeatNone; // and we have no good pixels to fill with
718
719 composer cc (this, new rxvt_img (s, alpha ? find_alpha_format_for (s->dpy, format) : format,
720 0, 0, w, h, repeat));
721
722 if (alpha)
723 {
724 XRenderColor rc = { 0, 0, 0, 0 };
725 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
726 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
727 }
728 else
397 XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); 729 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, -x, -y, 0, 0, 0, 0, w, h);
398 730
399 XRenderFreePicture (dpy, src); 731 return cc;
400 XRenderFreePicture (dpy, dst); 732}
733
734rxvt_img *
735rxvt_img::sub_rect (int x, int y, int width, int height)
736{
737 rxvt_img *img = clone ();
738
739 img->x -= x;
740 img->y -= y;
741
742 if (w != width || h != height)
743 {
744 img->w = width;
745 img->h = height;
746
747 rxvt_img *img2 = img->reify ();
748 delete img;
749 img = img2;
750 }
401 751
402 return img; 752 return img;
403} 753}
404 754
405rxvt_img * 755rxvt_img *
406rxvt_img::sub_rect (int x, int y, int width, int height) 756rxvt_img::transform (const nv matrix[3][3])
407{ 757{
408 rxvt_img *img = clone (); 758 return transform (mat3x3 (&matrix[0][0]));
409
410 img->x += x;
411 img->y += y;
412 img->w = width;
413 img->h = height;
414
415 return img;
416} 759}
417 760
418rxvt_img * 761rxvt_img *
419rxvt_img::transform (int new_width, int new_height, double matrix[9]) 762rxvt_img::transform (const nv *matrix)
420{ 763{
421 rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height); 764 mat3x3 m (matrix);
422 img->alloc ();
423 765
424 Display *dpy = s->display->dpy; 766 // calculate new pixel bounding box coordinates
425 XRenderPictureAttributes pa; 767 nv rmin[2], rmax[2];
426 pa.repeat = repeat; 768
427 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); 769 for (int i = 0; i < 2; ++i)
428 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); 770 {
771 nv v;
772
773 v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v;
774 v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
775 v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
776 v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
777 }
778
779 float sx = rmin [0] - x;
780 float sy = rmin [1] - y;
781
782 // TODO: adjust matrix for subpixel accuracy
783 int nx = floor (rmin [0]);
784 int ny = floor (rmin [1]);
785
786 int new_width = ceil (rmax [0] - rmin [0]);
787 int new_height = ceil (rmax [1] - rmin [1]);
788
789 mat3x3 inv = (mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y)).inverse ();
790
791 composer cc (this, new rxvt_img (s, format, nx, ny, new_width, new_height, repeat));
429 792
430 XTransform xfrm; 793 XTransform xfrm;
431 794
432 for (int i = 0; i < 3; ++i) 795 for (int i = 0; i < 3; ++i)
433 for (int j = 0; j < 3; ++j) 796 for (int j = 0; j < 3; ++j)
434 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); 797 xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
435 798
436 xfrm.matrix [0][2] += XDoubleToFixed (x);//TODO
437 xfrm.matrix [0][3] += XDoubleToFixed (y);
438
439 XRenderSetPictureFilter (dpy, src, "good", 0, 0); 799 XRenderSetPictureFilter (cc.dpy, cc.src, "good", 0, 0);
440 XRenderSetPictureTransform (dpy, src, &xfrm); 800 XRenderSetPictureTransform (cc.dpy, cc.src, &xfrm);
441 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); 801 XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
442 802
443 XRenderFreePicture (dpy, src); 803 return cc;
444 XRenderFreePicture (dpy, dst); 804}
805
806rxvt_img *
807rxvt_img::scale (int new_width, int new_height)
808{
809 if (w == new_width && h == new_height)
810 return clone ();
811
812 int old_repeat_mode = repeat;
813 repeat = RepeatPad; // not right, but xrender can't properly scale it seems
814
815 rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h));
816
817 repeat = old_repeat_mode;
818 img->repeat = repeat;
445 819
446 return img; 820 return img;
447} 821}
448 822
449rxvt_img * 823rxvt_img *
450rxvt_img::scale (int new_width, int new_height) 824rxvt_img::rotate (int cx, int cy, nv phi)
451{ 825{
452 double matrix[9] = { 826 move (-cx, -cy);
453 w / (double)new_width, 0, 0, 827 rxvt_img *img = transform (mat3x3::rotate (phi));
454 0, h / (double)new_height, 0, 828 move ( cx, cy);
455 0, 0, 1 829 img->move (cx, cy);
456 };
457 830
458 return transform (new_width, new_height, matrix); 831 return img;
459} 832}
460 833
461rxvt_img * 834rxvt_img *
462rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
463{
464 double s = sin (phi);
465 double c = cos (phi);
466
467 double matrix[9] = {
468 c, -s, -c * x + s * y + x,
469 s, c, -s * x - c * y + y,
470 0, 0, 1
471 };
472
473 return transform (new_width, new_height, matrix);
474}
475
476rxvt_img *
477rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg) 835rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
478{ 836{
479 if (new_format == format) 837 if (new_format == format)
480 return clone (); 838 return clone ();
481 839
482 rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h); 840 composer cc (this, new rxvt_img (s, new_format, x, y, w, h, repeat));
483 img->alloc ();
484 841
485 Display *dpy = s->display->dpy;
486 Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);
487 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
488 int op = PictOpSrc; 842 int op = PictOpSrc;
489 843
490 if (format->direct.alphaMask && !new_format->direct.alphaMask) 844 if (format->direct.alphaMask && !new_format->direct.alphaMask)
491 { 845 {
492 // does it have to be that complicated 846 // does it have to be that complicated
493 rgba c;
494 bg.get (c);
495
496 XRenderColor rc = { c.r, c.g, c.b, 0xffff }; 847 XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
497 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); 848 XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);
498 849
499 op = PictOpOver; 850 op = PictOpOver;
500 } 851 }
501 852
502 XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 853 XRenderComposite (cc.dpy, op, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
503 854
504 XRenderFreePicture (dpy, src);
505 XRenderFreePicture (dpy, dst);
506
507 return img; 855 return cc;
508} 856}
509 857
510rxvt_img * 858rxvt_img *
511rxvt_img::blend (rxvt_img *img, double factor) 859rxvt_img::tint (const rgba &c)
512{ 860{
513 rxvt_img *img2 = clone (); 861 composer cc (this);
514 Display *dpy = s->display->dpy; 862 cc.mask (true);
515 Picture src = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); 863 cc.fill (c);
516 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
517 Picture mask = create_xrender_mask (dpy, img->pm, False);
518 864
519 XRenderColor mask_c;
520
521 mask_c.alpha = float_to_component (factor);
522 mask_c.red =
523 mask_c.green =
524 mask_c.blue = 0;
525 XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
526
527 XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); 865 XRenderComposite (cc.dpy, PictOpSrc, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
528 866
529 XRenderFreePicture (dpy, src);
530 XRenderFreePicture (dpy, dst);
531 XRenderFreePicture (dpy, mask);
532
533 return img2; 867 return cc;
868}
869
870rxvt_img *
871rxvt_img::filter (const char *name, int nparams, nv *params)
872{
873 composer cc (this);
874
875 XFixed *xparams = rxvt_temp_buf<XFixed> (nparams);
876
877 for (int i = 0; i < nparams; ++i)
878 xparams [i] = XDoubleToFixed (params [i]);
879
880 XRenderSetPictureFilter (cc.dpy, cc.src, name, xparams, nparams);
881
882 XRenderComposite (cc.dpy, PictOpSrc, cc.src, 0, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
883
884 return cc;
534} 885}
535 886
536#endif 887#endif
537 888

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