[ViewVC] Diff of: cvs/rxvt-unicode/src/rxvtimg.C

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.74 by root, Sat Jun 9 19:20:04 2012 UTC vs.
Revision 1.90 by root, Thu Jun 14 19:44:45 2012 UTC

…		…
1	#include <math.h>	1	#include <math.h>
2	#include "../config.h"	2	#include "../config.h"
3	#include "rxvt.h"	3	#include "rxvt.h"
4		4
5	#if HAVE_IMG	5	#if HAVE_IMG
		6
		7	#if 0
		8	struct pict
		9	{
		10	Display *dpy;
		11	Picture pic;
		12
		13	operator Picture () const
		14	{
		15	return pic;
		16	}
		17
		18	pict ()
		19	: pic (0)
		20	{
		21	}
		22
		23	pict (rxvt_img img, XRenderPictFormat format = 0)
		24	: dpy (img->s->display->dpy)
		25	{
		26	XRenderPictureAttributes pa;
		27	pa.repeat = img->repeat;
		28	pic = XRenderCreatePicture (dpy, img->pm, format ? format : img->format, CPRepeat, &pa);
		29	}
		30
		31	~pict ()
		32	{
		33	if (pic)
		34	XRenderFreePicture (dpy, pic);
		35	}
		36	};
		37	#endif
		38
		39	static XRenderPictFormat *
		40	find_alpha_format_for (Display dpy, XRenderPictFormat format)
		41	{
		42	if (format->direct.alphaMask)
		43	return format; // already has alpha
		44
		45	// try to find a suitable alpha format, one bit alpha is enough for our purposes
		46	if (format->type == PictTypeDirect)
		47	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
		48	if (f->direct.alphaMask
		49	&& f->type == PictTypeDirect
		50	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
		51	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
		52	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
		53	return f;
		54
		55	// should be a very good fallback
		56	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
		57	}
6		58
7	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int x, int y, int width, int height, int repeat)	59	rxvt_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(repeat),	60	: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
9	pm(0), ref(0)	61	pm(0), ref(0)
10	{	62	{
50		102
51	return img;	103	return img;
52	}	104	}
53		105
54	# if HAVE_PIXBUF	106	# if HAVE_PIXBUF
		107
55	rxvt_img *	108	rxvt_img *
56	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)	109	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)
57	{	110	{
58	Display *dpy = s->display->dpy;	111	Display *dpy = s->display->dpy;
59		112
…		…
63	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks	116	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks
64	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");	117	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
65		118
66	// since we require rgb24/argb32 formats from xrender we assume	119	// since we require rgb24/argb32 formats from xrender we assume
67	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender	120	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender
68	int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24;
69		121
70	int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;	122	int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
71		123
72	XImage xi;	124	XImage xi;
73		125
…		…
77	xi.format = ZPixmap;	129	xi.format = ZPixmap;
78	xi.byte_order = ImageByteOrder (dpy);	130	xi.byte_order = ImageByteOrder (dpy);
79	xi.bitmap_unit = 0; //XY only, unused	131	xi.bitmap_unit = 0; //XY only, unused
80	xi.bitmap_bit_order = 0; //XY only, unused	132	xi.bitmap_bit_order = 0; //XY only, unused
81	xi.bitmap_pad = BitmapPad (dpy);	133	xi.bitmap_pad = BitmapPad (dpy);
82	xi.depth = depth;	134	xi.depth = 32;
83	xi.bytes_per_line = 0;	135	xi.bytes_per_line = 0;
84	xi.bits_per_pixel = 32; //Z only	136	xi.bits_per_pixel = 32; //Z only
85	xi.red_mask = 0x00000000; //Z only, unused	137	xi.red_mask = 0x00000000; //Z only, unused
86	xi.green_mask = 0x00000000; //Z only, unused	138	xi.green_mask = 0x00000000; //Z only, unused
87	xi.blue_mask = 0x00000000; //Z only, unused	139	xi.blue_mask = 0x00000000; //Z only, unused
…		…
96	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");	148	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
97		149
98	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);	150	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);
99		151
100	int rowstride = gdk_pixbuf_get_rowstride (pb);	152	int rowstride = gdk_pixbuf_get_rowstride (pb);
101		153	bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb);
102	assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb));
103	unsigned char *row = gdk_pixbuf_get_pixels (pb);	154	unsigned char *row = gdk_pixbuf_get_pixels (pb);
		155
104	char *line = xi.data;	156	char *line = xi.data;
105		157
106	for (int y = 0; y < height; y++)	158	for (int y = 0; y < height; y++)
107	{	159	{
108	unsigned char *src = row;	160	unsigned char *src = row;
109	uint32_t dst = (uint32_t )line;	161	uint32_t dst = (uint32_t )line;
110		162
111	if (depth == 24)	163	if (!pb_has_alpha)
112	for (int x = 0; x < width; x++)	164	for (int x = 0; x < width; x++)
113	{	165	{
114	uint8_t r = *src++;	166	uint8_t r = *src++;
115	uint8_t g = *src++;	167	uint8_t g = *src++;
116	uint8_t b = *src++;	168	uint8_t b = *src++;
117		169
118	uint32_t v = (r << 16) \| (g << 8) \| b;	170	uint32_t v = (255 << 24) \| (r << 16) \| (g << 8) \| b;
119		171
120	if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)	172	if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
121	v = ecb_bswap32 (v);	173	v = ecb_bswap32 (v);
122		174
123	*dst++ = v;	175	*dst++ = v;
…		…
140		192
141	row += rowstride;	193	row += rowstride;
142	line += xi.bytes_per_line;	194	line += xi.bytes_per_line;
143	}	195	}
144		196
145	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height);	197	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
146	img->alloc ();	198	img->alloc ();
147		199
148	GC gc = XCreateGC (dpy, img->pm, 0, 0);	200	GC gc = XCreateGC (dpy, img->pm, 0, 0);
149	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);	201	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
150	XFreeGC (dpy, gc);	202	XFreeGC (dpy, gc);
…		…
167		219
168	g_object_unref (pb);	220	g_object_unref (pb);
169		221
170	return img;	222	return img;
171	}	223	}
		224
172	# endif	225	# endif
173		226
174	void	227	void
175	rxvt_img::destroy ()	228	rxvt_img::destroy ()
176	{	229	{
…		…
194	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);	247	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
195	ref = new pixref (w, h);	248	ref = new pixref (w, h);
196	}	249	}
197		250
198	Picture	251	Picture
199	rxvt_img::src_picture ()	252	rxvt_img::picture ()
200	{	253	{
201	Display *dpy = s->display->dpy;	254	Display *dpy = s->display->dpy;
202		255
203	XRenderPictureAttributes pa;	256	XRenderPictureAttributes pa;
204	pa.repeat = repeat;	257	pa.repeat = repeat;
…		…
223	pm = pm2;	276	pm = pm2;
224	ref = new pixref (ref->w, ref->h);	277	ref = new pixref (ref->w, ref->h);
225	}	278	}
226		279
227	void	280	void
228	rxvt_img::fill (const rxvt_color &c)	281	rxvt_img::fill (const rgba &c)
229	{	282	{
230	XGCValues gcv;	283	XRenderColor rc = { c.r, c.g, c.b, c.a };
231	gcv.foreground = c;	284
232	GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);	285	Display *dpy = s->display->dpy;
233	XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);	286	Picture src = picture ();
234	XFreeGC (s->display->dpy, gc);	287	XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h);
		288	XRenderFreePicture (dpy, src);
		289	}
		290
		291	void
		292	rxvt_img::add_alpha ()
		293	{
		294	if (format->direct.alphaMask)
		295	return;
		296
		297	Display *dpy = s->display->dpy;
		298
		299	rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat);
		300	img->alloc ();
		301
		302	Picture src = picture ();
		303	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
		304
		305	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
		306
		307	XRenderFreePicture (dpy, src);
		308	XRenderFreePicture (dpy, dst);
		309
		310	::swap (img->ref, ref);
		311	::swap (img->pm , pm );
		312
		313	delete img;
235	}	314	}
236		315
237	static void	316	static void
238	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)	317	get_gaussian_kernel (int radius, int width, rxvt_img::nv kernel, XFixed params)
239	{	318	{
240	double sigma = radius / 2.0;	319	rxvt_img::nv sigma = radius / 2.0;
241	double scale = sqrt (2.0 * M_PI) * sigma;	320	rxvt_img::nv scale = sqrt (2.0 * M_PI) * sigma;
242	double sum = 0.0;	321	rxvt_img::nv sum = 0.0;
243		322
244	for (int i = 0; i < width; i++)	323	for (int i = 0; i < width; i++)
245	{	324	{
246	double x = i - width / 2;	325	rxvt_img::nv x = i - width / 2;
247	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;	326	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
248	sum += kernel[i];	327	sum += kernel[i];
249	}	328	}
250		329
251	params[0] = XDoubleToFixed (width);	330	params[0] = XDoubleToFixed (width);
…		…
261	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))	340	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
262	return clone ();	341	return clone ();
263		342
264	Display *dpy = s->display->dpy;	343	Display *dpy = s->display->dpy;
265	int size = max (rh, rv) * 2 + 1;	344	int size = max (rh, rv) * 2 + 1;
266	double kernel = (double )malloc (size * sizeof (double));	345	nv kernel = (nv )malloc (size * sizeof (nv));
267	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));	346	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
268	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);	347	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
269	img->alloc ();	348	img->alloc ();
270		349
271	XRenderPictureAttributes pa;	350	XRenderPictureAttributes pa;
…		…
309	w, h);	388	w, h);
310	}	389	}
311		390
312	free (kernel);	391	free (kernel);
313	free (params);	392	free (params);
		393
314	XRenderFreePicture (dpy, src);	394	XRenderFreePicture (dpy, src);
315	XRenderFreePicture (dpy, dst);	395	XRenderFreePicture (dpy, dst);
316	XRenderFreePicture (dpy, tmp);	396	XRenderFreePicture (dpy, tmp);
317		397
318	return img;	398	return img;
319	}	399	}
320		400
321	static Picture	401	static Picture
322	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)	402	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha)
323	{	403	{
324	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);	404	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
325		405
326	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);	406	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
327	XRenderPictureAttributes pa;	407	XRenderPictureAttributes pa;
328	pa.repeat = RepeatNormal;	408	pa.repeat = RepeatNormal;
		409	pa.component_alpha = component_alpha;
329	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);	410	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat \| CPComponentAlpha, &pa);
330		411
331	XFreePixmap (dpy, pixmap);	412	XFreePixmap (dpy, pixmap);
332		413
333	return mask;	414	return mask;
334	}	415	}
…		…
391	if (r < 0 \|\| g < 0 \|\| b < 0 \|\| a < 0)	472	if (r < 0 \|\| g < 0 \|\| b < 0 \|\| a < 0)
392	rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");	473	rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
393		474
394	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);	475	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
395	img->alloc ();	476	img->alloc ();
396		477	img->fill (rgba (0, 0, 0, 0));
397	{
398	rxvt_color empty;
399	empty.set (s, rgba (0, 0, 0, 0));
400	img->fill (empty);
401	}
402		478
403	// premultiply (yeah, these are not exact, sue me or fix it)	479	// premultiply (yeah, these are not exact, sue me or fix it)
404	r = (r * (a >> 8)) >> 8;	480	r = (r * (a >> 8)) >> 8;
405	g = (g * (a >> 8)) >> 8;	481	g = (g * (a >> 8)) >> 8;
406	b = (b * (a >> 8)) >> 8;	482	b = (b * (a >> 8)) >> 8;
407		483
408	Display *dpy = s->display->dpy;	484	Display *dpy = s->display->dpy;
409		485
410	Picture src = src_picture ();	486	Picture src = picture ();
411	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);	487	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
412	Picture mul = create_xrender_mask (dpy, pm, True);	488	Picture mul = create_xrender_mask (dpy, pm, True, True);
413
414	XRenderPictureAttributes pa;
415	pa.component_alpha = 1;
416	XRenderChangePicture (dpy, mul, CPComponentAlpha, &pa);
417		489
418	//TODO: this operator does not yet implement some useful contrast	490	//TODO: this operator does not yet implement some useful contrast
419	while (r \| g \| b \| a)	491	while (r \| g \| b \| a)
420	{	492	{
421	unsigned short xr, xg, xb, xa;	493	unsigned short xr, xg, xb, xa;
…		…
436	::swap (img->pm , pm );	508	::swap (img->pm , pm );
437		509
438	delete img;	510	delete img;
439	}	511	}
440		512
		513	void
		514	rxvt_img::draw (rxvt_img *img, int op, nv mask)
		515	{
		516	unshare ();
		517
		518	Display *dpy = s->display->dpy;
		519	Picture src = img->picture ();
		520	Picture dst = picture ();
		521	Picture mask_p = 0;
		522
		523	if (mask != 1.)
		524	{
		525	mask_p = create_xrender_mask (dpy, img->pm, False, False);
		526	XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) };
		527	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
		528	}
		529
		530	XRenderComposite (dpy, op, src, mask_p, dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h);
		531
		532	XRenderFreePicture (dpy, src);
		533	XRenderFreePicture (dpy, dst);
		534
		535	if (mask_p)
		536	XRenderFreePicture (dpy, mask_p);
		537	}
		538
441	rxvt_img *	539	rxvt_img *
442	rxvt_img::clone ()	540	rxvt_img::clone ()
443	{	541	{
444	return new rxvt_img (*this);	542	return new rxvt_img (*this);
445	}
446
447	static XRenderPictFormat *
448	find_alpha_format_for (Display dpy, XRenderPictFormat format)
449	{
450	if (format->direct.alphaMask)
451	return format; // already has alpha
452
453	// try to find a suitable alpha format, one bit alpha is enough for our purposes
454	if (format->type == PictTypeDirect)
455	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
456	if (f->direct.alphaMask
457	&& f->type == PictTypeDirect
458	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
459	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
460	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
461	return f;
462
463	// should be a very good fallback
464	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
465	}	543	}
466		544
467	rxvt_img *	545	rxvt_img *
468	rxvt_img::reify ()	546	rxvt_img::reify ()
469	{	547	{
…		…
478	&& repeat == RepeatNone; // and we have no good pixels to fill with	556	&& repeat == RepeatNone; // and we have no good pixels to fill with
479		557
480	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);	558	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
481	img->alloc ();	559	img->alloc ();
482		560
483	Picture src = src_picture ();	561	Picture src = picture ();
484	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	562	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
485		563
486	if (alpha)	564	if (alpha)
487	{	565	{
488	XRenderColor rc = { 0, 0, 0, 0 };	566	XRenderColor rc = { 0, 0, 0, 0 };
489	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles	567	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
490	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h);	568	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
491	}	569	}
492	else	570	else
493	XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);	571	XRenderComposite (dpy, PictOpSrc, src, None, dst, -x, -y, 0, 0, 0, 0, w, h);
494		572
495	XRenderFreePicture (dpy, src);	573	XRenderFreePicture (dpy, src);
496	XRenderFreePicture (dpy, dst);	574	XRenderFreePicture (dpy, dst);
497		575
498	return img;	576	return img;
…		…
501	rxvt_img *	579	rxvt_img *
502	rxvt_img::sub_rect (int x, int y, int width, int height)	580	rxvt_img::sub_rect (int x, int y, int width, int height)
503	{	581	{
504	rxvt_img *img = clone ();	582	rxvt_img *img = clone ();
505		583
506	img->x += x;	584	img->x -= x;
507	img->y += y;	585	img->y -= y;
508		586
509	if (w != width \|\| h != height)	587	if (w != width \|\| h != height)
510	{	588	{
511	img->w = width;	589	img->w = width;
512	img->h = height;	590	img->h = height;
…		…
517	}	595	}
518		596
519	return img;	597	return img;
520	}	598	}
521		599
522	rxvt_img *	600	static void
523	rxvt_img::transform (int new_width, int new_height, double matrix[9])	601	mat_invert (rxvt_img::nv mat[3][3], rxvt_img::nv (&inv)[3][3])
524	{	602	{
		603	rxvt_img::nv s0 = mat [2][2] * mat [1][1] - mat [2][1] * mat [1][2];
		604	rxvt_img::nv s1 = mat [2][1] * mat [0][2] - mat [2][2] * mat [0][1];
		605	rxvt_img::nv s2 = mat [1][2] * mat [0][1] - mat [1][1] * mat [0][2];
		606
		607	rxvt_img::nv invdet = 1. / (mat [0][0] * s0 + mat [1][0] * s1 + mat [2][0] * s2);
		608
		609	inv [0][0] = invdet * s0;
		610	inv [0][1] = invdet * s1;
		611	inv [0][2] = invdet * s2;
		612
		613	inv [1][0] = invdet * (mat [2][0] * mat [1][2] - mat [2][2] * mat [1][0]);
		614	inv [1][1] = invdet * (mat [2][2] * mat [0][0] - mat [2][0] * mat [0][2]);
		615	inv [1][2] = invdet * (mat [1][0] * mat [0][2] - mat [1][2] * mat [0][0]);
		616
		617	inv [2][0] = invdet * (mat [2][1] * mat [1][0] - mat [2][0] * mat [1][1]);
		618	inv [2][1] = invdet * (mat [2][0] * mat [0][1] - mat [2][1] * mat [0][0]);
		619	inv [2][2] = invdet * (mat [1][1] * mat [0][0] - mat [1][0] * mat [0][1]);
		620	}
		621
		622	static rxvt_img::nv
		623	mat_apply (rxvt_img::nv mat[3][3], int i, rxvt_img::nv x, rxvt_img::nv y)
		624	{
		625	rxvt_img::nv v = mat [i][0] * x + mat [i][1] * y + mat [i][2];
		626	rxvt_img::nv w = mat [2][0] * x + mat [2][1] * y + mat [2][2];
		627
		628	return v * (1. / w);
		629	}
		630
		631	rxvt_img *
		632	rxvt_img::transform (nv matrix[3][3])
		633	{
		634	// calculate new pixel bounding box coordinates
		635	nv rmin[2], rmax[2];
		636
		637	for (int i = 0; i < 2; ++i)
		638	{
		639	nv v;
		640
		641	v = mat_apply (matrix, i, 0+x, 0+y); rmin [i] = rmax [i] = v;
		642	v = mat_apply (matrix, i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
		643	v = mat_apply (matrix, i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		644	v = mat_apply (matrix, i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		645	}
		646
		647	// TODO: adjust matrix for subpixel accuracy
		648	int dx = floor (rmin [0]);
		649	int dy = floor (rmin [1]);
		650
		651	int new_width = ceil (rmax [0] - dx);
		652	int new_height = ceil (rmax [1] - dy);
		653
		654	nv inv[3][3];
		655	mat_invert (matrix, inv);
		656
525	rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat);	657	rxvt_img *img = new rxvt_img (s, format, dx, dy, new_width, new_height, repeat);
526	img->alloc ();	658	img->alloc ();
527		659
528	Display *dpy = s->display->dpy;	660	Display *dpy = s->display->dpy;
529	Picture src = src_picture ();	661	Picture src = picture ();
530	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	662	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
531		663
532	XTransform xfrm;	664	XTransform xfrm;
533		665
534	for (int i = 0; i < 3; ++i)	666	for (int i = 0; i < 3; ++i)
535	for (int j = 0; j < 3; ++j)	667	for (int j = 0; j < 3; ++j)
536	xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);	668	xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
537
538	xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
539	xfrm.matrix [1][2] -= XDoubleToFixed (y);
540		669
541	XRenderSetPictureFilter (dpy, src, "good", 0, 0);	670	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
542	XRenderSetPictureTransform (dpy, src, &xfrm);	671	XRenderSetPictureTransform (dpy, src, &xfrm);
543	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);	672	XRenderComposite (dpy, PictOpSrc, src, None, dst, dx, dy, 0, 0, 0, 0, new_width, new_height);
544		673
545	XRenderFreePicture (dpy, src);	674	XRenderFreePicture (dpy, src);
546	XRenderFreePicture (dpy, dst);	675	XRenderFreePicture (dpy, dst);
547		676
548	return img;	677	return img;
…		…
552	rxvt_img::scale (int new_width, int new_height)	681	rxvt_img::scale (int new_width, int new_height)
553	{	682	{
554	if (w == new_width && h == new_height)	683	if (w == new_width && h == new_height)
555	return clone ();	684	return clone ();
556		685
557	double matrix[9] = {	686	nv matrix[3][3] = {
558	w / (double)new_width, 0, 0,	687	{ new_width / (nv)w, 0, 0 },
559	0, h / (double)new_height, 0,	688	{ 0, new_height / (nv)h, 0 },
560	0, 0, 1	689	{ 0, 0, 1 }
561	};	690	};
562		691
563	int old_repeat_mode = repeat;	692	int old_repeat_mode = repeat;
564	repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems	693	repeat = RepeatPad; // not right, but xrender can't properly scale it seems
565		694
566	rxvt_img *img = transform (new_width, new_height, matrix);	695	rxvt_img *img = transform (matrix);
567		696
568	repeat = old_repeat_mode;	697	repeat = old_repeat_mode;
569	img->repeat = repeat;	698	img->repeat = repeat;
570		699
571	return img;	700	return img;
572	}	701	}
573		702
574	rxvt_img *	703	rxvt_img *
575	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)	704	rxvt_img::rotate (int cx, int cy, nv phi)
576	{	705	{
577	double s = sin (phi);	706	nv s = sin (phi);
578	double c = cos (phi);	707	nv c = cos (phi);
579		708
580	double matrix[9] = {	709	nv matrix[3][3] = {
581	c, -s, -c * x + s * y + x,	710	{ c, -s, cx - c * cx + s * cy + 200 },
582	s, c, -s * x - c * y + y,	711	{ s, c, cy - s * cx - c * cy },
583	0, 0, 1	712	{ 0, 0, 1 }
		713	//{ c, -s, 0 },
		714	//{ s, c, 0 },
		715	//{ 0, 0, 1 }
584	};	716	};
585		717
586	return transform (new_width, new_height, matrix);	718	//move (-cx, -cy);
587	}	719	rxvt_img *img = transform (matrix);
		720	//move ( cx, cy);
		721	//img->move (cx, cy);
588		722
		723	return img;
		724	}
		725
589	rxvt_img *	726	rxvt_img *
590	rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg)	727	rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
591	{	728	{
592	if (new_format == format)	729	if (new_format == format)
593	return clone ();	730	return clone ();
594		731
595	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);	732	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
596	img->alloc ();	733	img->alloc ();
597		734
598	Display *dpy = s->display->dpy;	735	Display *dpy = s->display->dpy;
599	Picture src = src_picture ();	736	Picture src = picture ();
600	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);	737	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
601	int op = PictOpSrc;	738	int op = PictOpSrc;
602		739
603	if (format->direct.alphaMask && !new_format->direct.alphaMask)	740	if (format->direct.alphaMask && !new_format->direct.alphaMask)
604	{	741	{
605	// does it have to be that complicated	742	// does it have to be that complicated
606	rgba c;
607	bg.get (c);
608
609	XRenderColor rc = { c.r, c.g, c.b, 0xffff };	743	XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
610	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);	744	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
611		745
612	op = PictOpOver;	746	op = PictOpOver;
613	}	747	}
614		748
…		…
619		753
620	return img;	754	return img;
621	}	755	}
622		756
623	rxvt_img *	757	rxvt_img *
624	rxvt_img::blend (rxvt_img *img, double factor)	758	rxvt_img::blend (rxvt_img *img, nv factor)
625	{	759	{
626	rxvt_img *img2 = clone ();	760	rxvt_img *img2 = clone ();
627	Display *dpy = s->display->dpy;	761	Display *dpy = s->display->dpy;
628	Picture src = img->src_picture ();	762	Picture src = img->picture ();
629	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);	763	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
630		764	Picture mask = create_xrender_mask (dpy, img->pm, False, False);
631	Pixmap pixmap = XCreatePixmap (dpy, img->pm, 1, 1, 8);
632	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, PictStandardA8);
633	XRenderPictureAttributes pa;
634	pa.repeat = True;
635	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
636	XFreePixmap (dpy, pixmap);
637		765
638	XRenderColor mask_c;	766	XRenderColor mask_c;
639		767
640	mask_c.alpha = float_to_component (factor);	768	mask_c.alpha = float_to_component (factor);
641	mask_c.red =	769	mask_c.red =

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Comparing rxvt-unicode/src/rxvtimg.C (file contents): Revision 1.74 by root, Sat Jun 9 19:20:04 2012 UTC vs. Revision 1.90 by root, Thu Jun 14 19:44:45 2012 UTC

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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.74 by root, Sat Jun 9 19:20:04 2012 UTC vs.
Revision 1.90 by root, Thu Jun 14 19:44:45 2012 UTC