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

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.32 by root, Thu Jun 7 07:53:12 2012 UTC vs.
Revision 1.97 by sf-exg, Sun Jun 17 17:06:47 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
		31	typedef rxvt_img::nv nv;
		32
		33	namespace
		34	{
		35
		36	struct mat3x3
		37	{
		38	nv v[3][3];
		39
		40	mat3x3 ()
		41	{
		42	}
		43
		44	mat3x3 (const nv *matrix)
		45	{
		46	memcpy (v, matrix, sizeof (v));
		47	}
		48
		49	mat3x3 (nv v11, nv v12, nv v13, nv v21, nv v22, nv v23, nv v31, nv v32, nv v33)
		50	{
		51	v[0][0] = v11; v[0][1] = v12; v[0][2] = v13;
		52	v[1][0] = v21; v[1][1] = v22; v[1][2] = v23;
		53	v[2][0] = v31; v[2][1] = v32; v[2][2] = v33;
		54	}
		55
		56	mat3x3 invert ();
		57
		58	nv *operator [](int i) { return &v[i][0]; }
		59	const nv *operator [](int i) const { return &v[i][0]; }
		60
		61	operator const nv * () const { return &v[0][0]; }
		62	operator nv * () { return &v[0][0]; }
		63
		64	// quite inefficient, hopefully gcc pulls the w calc out of any loops
		65	nv apply1 (int i, nv x, nv y)
		66	{
		67	mat3x3 &m = *this;
		68
		69	nv v = m[i][0] * x + m[i][1] * y + m[i][2];
		70	nv w = m[2][0] * x + m[2][1] * y + m[2][2];
		71
		72	return v * (1. / w);
		73	}
		74
		75	static mat3x3 translate (nv x, nv y);
		76	static mat3x3 scale (nv s, nv t);
		77	static mat3x3 rotate (nv phi);
		78	};
		79
		80	mat3x3
		81	mat3x3::invert ()
		82	{
		83	mat3x3 &m = *this;
		84	mat3x3 inv;
		85
		86	nv s0 = m[2][2] * m[1][1] - m[2][1] * m[1][2];
		87	nv s1 = m[2][1] * m[0][2] - m[2][2] * m[0][1];
		88	nv s2 = m[1][2] * m[0][1] - m[1][1] * m[0][2];
		89
		90	nv invdet = 1. / (m[0][0] * s0 + m[1][0] * s1 + m[2][0] * s2);
		91
		92	inv[0][0] = invdet * s0;
		93	inv[0][1] = invdet * s1;
		94	inv[0][2] = invdet * s2;
		95
		96	inv[1][0] = invdet * (m[2][0] * m[1][2] - m[2][2] * m[1][0]);
		97	inv[1][1] = invdet * (m[2][2] * m[0][0] - m[2][0] * m[0][2]);
		98	inv[1][2] = invdet * (m[1][0] * m[0][2] - m[1][2] * m[0][0]);
		99
		100	inv[2][0] = invdet * (m[2][1] * m[1][0] - m[2][0] * m[1][1]);
		101	inv[2][1] = invdet * (m[2][0] * m[0][1] - m[2][1] * m[0][0]);
		102	inv[2][2] = invdet * (m[1][1] * m[0][0] - m[1][0] * m[0][1]);
		103
		104	return inv;
		105	}
		106
		107	static mat3x3
		108	operator *(const mat3x3 &a, const mat3x3 &b)
		109	{
		110	mat3x3 r;
		111
		112	for (int i = 0; i < 3; ++i)
		113	for (int j = 0; j < 3; ++j)
		114	r[i][j] = a[i][0] * b[0][j]
		115	+ a[i][1] * b[1][j]
		116	+ a[i][2] * b[2][j];
		117
		118	return r;
		119	}
		120
		121	mat3x3
		122	mat3x3::translate (nv x, nv y)
		123	{
		124	return mat3x3 (
		125	1, 0, x,
		126	0, 1, y,
		127	0, 0, 1
		128	);
		129	}
		130
		131	mat3x3
		132	mat3x3::scale (nv s, nv t)
		133	{
		134	return mat3x3 (
		135	s, 0, 0,
		136	0, t, 0,
		137	0, 0, 1
		138	);
		139	}
		140
		141	// clockwise
		142	mat3x3
		143	mat3x3::rotate (nv phi)
		144	{
		145	nv s = sin (phi);
		146	nv c = cos (phi);
		147
		148	return mat3x3 (
		149	c, -s, 0,
		150	s, c, 0,
		151	0, 0, 1
		152	);
		153	}
		154
		155	}
		156
		157	#if 0
		158	struct pict
		159	{
		160	Display *dpy;
		161	Picture pic;
		162
		163	operator Picture () const
		164	{
		165	return pic;
		166	}
		167
		168	pict ()
		169	: pic (0)
		170	{
		171	}
		172
		173	pict (rxvt_img img, XRenderPictFormat format = 0)
		174	: dpy (img->s->display->dpy)
		175	{
		176	XRenderPictureAttributes pa;
		177	pa.repeat = img->repeat;
		178	pic = XRenderCreatePicture (dpy, img->pm, format ? format : img->format, CPRepeat, &pa);
		179	}
		180
		181	~pict ()
		182	{
		183	if (pic)
		184	XRenderFreePicture (dpy, pic);
		185	}
		186	};
		187	#endif
		188
		189	static XRenderPictFormat *
		190	find_alpha_format_for (Display dpy, XRenderPictFormat format)
		191	{
		192	if (format->direct.alphaMask)
		193	return format; // already has alpha
		194
		195	// try to find a suitable alpha format, one bit alpha is enough for our purposes
		196	if (format->type == PictTypeDirect)
		197	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
		198	if (f->direct.alphaMask
		199	&& f->type == PictTypeDirect
		200	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
		201	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
		202	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
		203	return f;
		204
		205	// should be a very good fallback
		206	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
		207	}
		208
7	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height)	209	rxvt_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),	210	: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
9	pm(0), refcnt(0)	211	pm(0), ref(0)
10	{	212	{
11	}	213	}
12		214
13	rxvt_img::rxvt_img (const rxvt_img &img)	215	rxvt_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)	216	: 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	{	217	{
16	if (refcnt)
17	++*refcnt;	218	++ref->cnt;
18	}	219	}
19
20	#if 0
21	rxvt_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		220
27	rxvt_img *	221	rxvt_img *
28	rxvt_img::new_from_root (rxvt_screen *s)	222	rxvt_img::new_from_root (rxvt_screen *s)
29	{	223	{
30	Display *dpy = s->display->dpy;	224	Display *dpy = s->display->dpy;
44	return 0;	238	return 0;
45		239
46	rxvt_img *img = new rxvt_img (	240	rxvt_img *img = new rxvt_img (
47	s,	241	s,
48	XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),	242	XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
		243	0,
		244	0,
49	root_pm_w,	245	root_pm_w,
50	root_pm_h	246	root_pm_h
51	);	247	);
52		248
53	img->pm = root_pixmap;	249	img->pm = root_pixmap;
		250	img->ref = new pixref (root_pm_w, root_pm_h);
		251	img->ref->ours = false;
		252
		253	return img;
		254	}
		255
		256	# if HAVE_PIXBUF
		257
		258	rxvt_img *
		259	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)
		260	{
		261	Display *dpy = s->display->dpy;
		262
		263	int width = gdk_pixbuf_get_width (pb);
		264	int height = gdk_pixbuf_get_height (pb);
		265
		266	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks
		267	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
		268
		269	// since we require rgb24/argb32 formats from xrender we assume
		270	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender
		271
		272	int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
		273
		274	XImage xi;
		275
		276	xi.width = width;
		277	xi.height = height;
		278	xi.xoffset = 0;
		279	xi.format = ZPixmap;
		280	xi.byte_order = ImageByteOrder (dpy);
		281	xi.bitmap_unit = 0; //XY only, unused
		282	xi.bitmap_bit_order = 0; //XY only, unused
		283	xi.bitmap_pad = BitmapPad (dpy);
		284	xi.depth = 32;
		285	xi.bytes_per_line = 0;
		286	xi.bits_per_pixel = 32; //Z only
		287	xi.red_mask = 0x00000000; //Z only, unused
		288	xi.green_mask = 0x00000000; //Z only, unused
		289	xi.blue_mask = 0x00000000; //Z only, unused
		290	xi.obdata = 0; // probably unused
		291
		292	bool byte_order_mismatch = byte_order != xi.byte_order;
		293
		294	if (!XInitImage (&xi))
		295	rxvt_fatal ("unable to initialise ximage, please report.\n");
		296
		297	if (height > INT_MAX / xi.bytes_per_line)
		298	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
		299
		300	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);
		301
		302	int rowstride = gdk_pixbuf_get_rowstride (pb);
		303	bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb);
		304	unsigned char *row = gdk_pixbuf_get_pixels (pb);
		305
		306	char *line = xi.data;
		307
		308	for (int y = 0; y < height; y++)
		309	{
		310	unsigned char *src = row;
		311	uint32_t dst = (uint32_t )line;
		312
		313	if (!pb_has_alpha)
		314	for (int x = 0; x < width; x++)
		315	{
		316	uint8_t r = *src++;
		317	uint8_t g = *src++;
		318	uint8_t b = *src++;
		319
		320	uint32_t v = (255 << 24) \| (r << 16) \| (g << 8) \| b;
		321
		322	if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
		323	v = ecb_bswap32 (v);
		324
		325	*dst++ = v;
		326	}
		327	else
		328	for (int x = 0; x < width; x++)
		329	{
		330	uint32_t v = (uint32_t )src; src += 4;
		331
		332	if (ecb_big_endian ())
		333	v = ecb_bswap32 (v);
		334
		335	v = ecb_rotl32 (v, 8); // abgr to bgra
		336
		337	if (!byte_order_mismatch)
		338	v = ecb_bswap32 (v);
		339
		340	*dst++ = v;
		341	}
		342
		343	row += rowstride;
		344	line += xi.bytes_per_line;
		345	}
		346
		347	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
		348	img->alloc ();
		349
		350	GC gc = XCreateGC (dpy, img->pm, 0, 0);
		351	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
		352	XFreeGC (dpy, gc);
		353
		354	free (xi.data);
54		355
55	return img;	356	return img;
56	}	357	}
57		358
58	rxvt_img *	359	rxvt_img *
…		…
62	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);	363	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
63		364
64	if (!pb)	365	if (!pb)
65	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);	366	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
66		367
67	rxvt_img *img = new rxvt_img (	368	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		369
76	g_object_unref (pb);	370	g_object_unref (pb);
77		371
78	return img;	372	return img;
79	}	373	}
		374
		375	# endif
80		376
81	void	377	void
82	rxvt_img::destroy ()	378	rxvt_img::destroy ()
83	{	379	{
84	if (!refcnt \|\| --*refcnt)	380	if (--ref->cnt)
85	return;	381	return;
86		382
87	if (pm)	383	if (pm && ref->ours)
88	XFreePixmap (s->display->dpy, pm);	384	XFreePixmap (s->display->dpy, pm);
89		385
90	delete refcnt;	386	delete ref;
91	}	387	}
92		388
93	rxvt_img::~rxvt_img ()	389	rxvt_img::~rxvt_img ()
94	{	390	{
95	destroy ();	391	destroy ();
…		…
97		393
98	void	394	void
99	rxvt_img::alloc ()	395	rxvt_img::alloc ()
100	{	396	{
101	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);	397	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
102	refcnt = new int (1);	398	ref = new pixref (w, h);
		399	}
		400
		401	Picture
		402	rxvt_img::picture ()
		403	{
		404	Display *dpy = s->display->dpy;
		405
		406	XRenderPictureAttributes pa;
		407	pa.repeat = repeat;
		408	Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
		409
		410	return pic;
103	}	411	}
104		412
105	void	413	void
106	rxvt_img::unshare ()	414	rxvt_img::unshare ()
107	{	415	{
108	if (refcnt && *refcnt == 1)	416	if (ref->cnt == 1 && ref->ours)
109	return;	417	return;
110		418
111	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);	419	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
112	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);	420	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
113	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0);	421	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
114	XFreeGC (s->display->dpy, gc);	422	XFreeGC (s->display->dpy, gc);
115		423
116	destroy ();	424	destroy ();
117		425
118	pm = pm2;	426	pm = pm2;
119	refcnt = new int (1);	427	ref = new pixref (ref->w, ref->h);
120	}	428	}
121		429
122	void	430	void
123	rxvt_img::fill (const rxvt_color &c)	431	rxvt_img::fill (const rgba &c)
124	{	432	{
125	XGCValues gcv;	433	XRenderColor rc = { c.r, c.g, c.b, c.a };
126	gcv.foreground = c;	434
127	GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);	435	Display *dpy = s->display->dpy;
128	XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);	436	Picture src = picture ();
129	XFreeGC (s->display->dpy, gc);	437	XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h);
		438	XRenderFreePicture (dpy, src);
		439	}
		440
		441	void
		442	rxvt_img::add_alpha ()
		443	{
		444	if (format->direct.alphaMask)
		445	return;
		446
		447	Display *dpy = s->display->dpy;
		448
		449	rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat);
		450	img->alloc ();
		451
		452	Picture src = picture ();
		453	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
		454
		455	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
		456
		457	XRenderFreePicture (dpy, src);
		458	XRenderFreePicture (dpy, dst);
		459
		460	::swap (img->ref, ref);
		461	::swap (img->pm , pm );
		462
		463	delete img;
130	}	464	}
131		465
132	static void	466	static void
133	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)	467	get_gaussian_kernel (int radius, int width, nv kernel, XFixed params)
134	{	468	{
135	double sigma = radius / 2.0;	469	nv sigma = radius / 2.0;
136	double scale = sqrt (2.0 * M_PI) * sigma;	470	nv scale = sqrt (2.0 * M_PI) * sigma;
137	double sum = 0.0;	471	nv sum = 0.0;
138		472
139	for (int i = 0; i < width; i++)	473	for (int i = 0; i < width; i++)
140	{	474	{
141	double x = i - width / 2;	475	nv x = i - width / 2;
142	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;	476	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
143	sum += kernel[i];	477	sum += kernel[i];
144	}	478	}
145		479
146	params[0] = XDoubleToFixed (width);	480	params[0] = XDoubleToFixed (width);
…		…
156	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))	490	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
157	return clone ();	491	return clone ();
158		492
159	Display *dpy = s->display->dpy;	493	Display *dpy = s->display->dpy;
160	int size = max (rh, rv) * 2 + 1;	494	int size = max (rh, rv) * 2 + 1;
161	double kernel = (double )malloc (size * sizeof (double));	495	nv kernel = (nv )malloc (size * sizeof (nv));
162	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));	496	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
163	rxvt_img *img = new rxvt_img (s, format, w, h);	497	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
164	img->alloc ();	498	img->alloc ();
165		499
166	XRenderPictureAttributes pa;	500	XRenderPictureAttributes pa;
167
168	pa.repeat = RepeatPad;	501	pa.repeat = RepeatPad;
169	Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa);	502	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
170	Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);	503	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
171		504
172	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);	505	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
173	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);	506	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
174	XFreePixmap (dpy, tmp_pm);	507	XFreePixmap (dpy, tmp_pm);
175		508
…		…
191		524
192	size = rv * 2 + 1;	525	size = rv * 2 + 1;
193	get_gaussian_kernel (rv, size, kernel, params);	526	get_gaussian_kernel (rv, size, kernel, params);
194	::swap (params[0], params[1]);	527	::swap (params[0], params[1]);
195		528
196	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);	529	XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
197	XRenderComposite (dpy,	530	XRenderComposite (dpy,
198	PictOpSrc,	531	PictOpSrc,
199	tmp,	532	tmp,
200	None,	533	None,
201	dst,	534	dst,
…		…
205	w, h);	538	w, h);
206	}	539	}
207		540
208	free (kernel);	541	free (kernel);
209	free (params);	542	free (params);
		543
210	XRenderFreePicture (dpy, src);	544	XRenderFreePicture (dpy, src);
211	XRenderFreePicture (dpy, dst);	545	XRenderFreePicture (dpy, dst);
212	XRenderFreePicture (dpy, tmp);	546	XRenderFreePicture (dpy, tmp);
213		547
214	return img;	548	return img;
215	}	549	}
216		550
217	static Picture	551	static Picture
218	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)	552	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha)
219	{	553	{
220	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);	554	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
221		555
222	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);	556	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
223	XRenderPictureAttributes pa;	557	XRenderPictureAttributes pa;
224	pa.repeat = True;	558	pa.repeat = RepeatNormal;
		559	pa.component_alpha = component_alpha;
225	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);	560	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat \| CPComponentAlpha, &pa);
226		561
227	XFreePixmap (dpy, pixmap);	562	XFreePixmap (dpy, pixmap);
228		563
229	return mask;	564	return mask;
230	}	565	}
231		566
		567	static void
		568	extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
		569	{
		570	int32_t x = clamp (c, cl0, cl1);
		571	c -= x;
		572	xc = x;
		573	}
		574
		575	static bool
		576	extract (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)
		577	{
		578	extract (cl0, cl1, r, xr);
		579	extract (cl0, cl1, g, xg);
		580	extract (cl0, cl1, b, xb);
		581	extract (cl0, cl1, a, xa);
		582
		583	return xr \| xg \| xb \| xa;
		584	}
		585
232	void	586	void
233	rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)	587	rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
234	{	588	{
		589	unshare ();
		590
235	Display *dpy = s->display->dpy;	591	Display *dpy = s->display->dpy;
236	Picture src = create_xrender_mask (dpy, pm, True);
237	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	592	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
238		593
		594	// loop should not be needed for brightness, as only -1..1 makes sense
		595	//while (r \| g \| b \| a)
		596	{
		597	unsigned short xr, xg, xb, xa;
239	XRenderColor mask_c;	598	XRenderColor mask_c;
240	mask_c.red = r;	599
241	mask_c.green = g;	600	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;	601	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
243	mask_c.alpha = a;	602
		603	if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
		604	{
		605	XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
		606	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		607	mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
		608	mask_c.green = -mask_c.green;
		609	mask_c.blue = -mask_c.blue;
		610	mask_c.alpha = -mask_c.alpha;
		611	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
		612	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		613	}
		614	}
		615
		616	XRenderFreePicture (dpy, dst);
		617	}
		618
		619	void
		620	rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
		621	{
		622	if (r < 0 \|\| g < 0 \|\| b < 0 \|\| a < 0)
		623	rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
		624
		625	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
		626	img->alloc ();
		627	img->fill (rgba (0, 0, 0, 0));
		628
		629	// premultiply (yeah, these are not exact, sue me or fix it)
		630	r = (r * (a >> 8)) >> 8;
		631	g = (g * (a >> 8)) >> 8;
		632	b = (b * (a >> 8)) >> 8;
		633
		634	Display *dpy = s->display->dpy;
		635
		636	Picture src = picture ();
		637	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
		638	Picture mul = create_xrender_mask (dpy, pm, True, True);
		639
		640	//TODO: this operator does not yet implement some useful contrast
		641	while (r \| g \| b \| a)
		642	{
		643	unsigned short xr, xg, xb, xa;
		644	XRenderColor mask_c;
		645
		646	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
		647	{
		648	XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1);
		649	XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h);
		650	}
		651	}
		652
		653	XRenderFreePicture (dpy, mul);
		654	XRenderFreePicture (dpy, dst);
		655	XRenderFreePicture (dpy, src);
		656
		657	::swap (img->ref, ref);
		658	::swap (img->pm , pm );
		659
		660	delete img;
		661	}
		662
		663	void
		664	rxvt_img::draw (rxvt_img *img, int op, nv mask)
		665	{
		666	unshare ();
		667
		668	Display *dpy = s->display->dpy;
		669	Picture src = img->picture ();
		670	Picture dst = picture ();
		671	Picture mask_p = 0;
		672
		673	if (mask != 1.)
		674	{
		675	mask_p = create_xrender_mask (dpy, img->pm, False, False);
		676	XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) };
244	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	677	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
		678	}
245		679
246	XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	680	XRenderComposite (dpy, op, src, mask_p, dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h);
247		681
248	XRenderFreePicture (dpy, src);	682	XRenderFreePicture (dpy, src);
249	XRenderFreePicture (dpy, dst);	683	XRenderFreePicture (dpy, dst);
250	}
251		684
252	void	685	if (mask_p)
253	rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)	686	XRenderFreePicture (dpy, mask_p);
254	{	687	}
255	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
256	return;
257		688
		689	rxvt_img *
		690	rxvt_img::clone ()
		691	{
		692	return new rxvt_img (*this);
		693	}
		694
		695	rxvt_img *
		696	rxvt_img::reify ()
		697	{
		698	if (x == 0 && y == 0 && w == ref->w && h == ref->h)
		699	return clone ();
		700
258	Display *dpy = s->display->dpy;	701	Display *dpy = s->display->dpy;
259	Picture src = create_xrender_mask (dpy, pm, True);	702
		703	// add an alpha channel if...
		704	bool alpha = !format->direct.alphaMask // pixmap has none yet
		705	&& (x \|\| y) // we need one because of non-zero offset
		706	&& repeat == RepeatNone; // and we have no good pixels to fill with
		707
		708	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
		709	img->alloc ();
		710
		711	Picture src = picture ();
260	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	712	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
261		713
262	XRenderColor mask_c;	714	if (alpha)
263	mask_c.red = r;	715	{
264	mask_c.green = g;	716	XRenderColor rc = { 0, 0, 0, 0 };
265	mask_c.blue = b;	717	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
266	mask_c.alpha = a;	718	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
267	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	719	}
268		720	else
269	XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	721	XRenderComposite (dpy, PictOpSrc, src, None, dst, -x, -y, 0, 0, 0, 0, w, h);
270		722
271	XRenderFreePicture (dpy, src);	723	XRenderFreePicture (dpy, src);
272	XRenderFreePicture (dpy, dst);	724	XRenderFreePicture (dpy, dst);
273	}
274		725
275	bool	726	return img;
276	rxvt_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	{
331	unsigned char pixel = row + x channels;
332	uint32_t value;
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	}
360
361	row += rowstride;
362	line += ximage->bytes_per_line;
363	}
364
365	XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);
366	XDestroyImage (ximage);
367	XFreeGC (dpy, gc);
368
369	return true;
370	}
371
372	rxvt_img *
373	rxvt_img::clone ()
374	{
375	return new rxvt_img (*this);
376	}	727	}
377		728
378	rxvt_img *	729	rxvt_img *
379	rxvt_img::sub_rect (int x, int y, int width, int height)	730	rxvt_img::sub_rect (int x, int y, int width, int height)
380	{	731	{
		732	rxvt_img *img = clone ();
		733
		734	img->x -= x;
		735	img->y -= y;
		736
		737	if (w != width \|\| h != height)
		738	{
		739	img->w = width;
		740	img->h = height;
		741
		742	rxvt_img *img2 = img->reify ();
		743	delete img;
		744	img = img2;
		745	}
		746
		747	return img;
		748	}
		749
		750	rxvt_img *
		751	rxvt_img::transform (const nv matrix[3][3])
		752	{
		753	return transform (mat3x3 (&matrix[0][0]));
		754	}
		755
		756	rxvt_img *
		757	rxvt_img::transform (const nv *matrix)
		758	{
		759	mat3x3 m (matrix);
		760
		761	// calculate new pixel bounding box coordinates
		762	nv r[2], rmin[2], rmax[2];
		763
		764	for (int i = 0; i < 2; ++i)
		765	{
		766	nv v;
		767
		768	v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v; r [i] = v;
		769	v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
		770	v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		771	v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		772	}
		773
		774	float sx = rmin [0] - x;
		775	float sy = rmin [1] - y;
		776
		777	// TODO: adjust matrix for subpixel accuracy
		778	int nx = floor (rmin [0]);
		779	int ny = floor (rmin [1]);
		780
		781	int new_width = ceil (rmax [0] - rmin [0]);
		782	int new_height = ceil (rmax [1] - rmin [1]);
		783
		784	m = mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y);
		785
		786	mat3x3 inv = m.invert ();
		787
381	rxvt_img *img = new rxvt_img (s, format, width, height);	788	rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat);
382	img->alloc ();	789	img->alloc ();
383		790
384	Display *dpy = s->display->dpy;	791	Display *dpy = s->display->dpy;
385	XRenderPictureAttributes pa;	792	Picture src = picture ();
386	pa.repeat = repeat;
387	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
388	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	793	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
389		794
		795	XTransform xfrm;
		796
		797	for (int i = 0; i < 3; ++i)
		798	for (int j = 0; j < 3; ++j)
		799	xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
		800
		801	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
		802	XRenderSetPictureTransform (dpy, src, &xfrm);
390	XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, width, height);	803	XRenderComposite (dpy, PictOpSrc, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
391		804
392	XRenderFreePicture (dpy, src);	805	XRenderFreePicture (dpy, src);
393	XRenderFreePicture (dpy, dst);	806	XRenderFreePicture (dpy, dst);
394		807
395	return img;	808	return img;
396	}	809	}
397		810
398	rxvt_img *	811	rxvt_img *
399	rxvt_img::transform (int new_width, int new_height, double matrix[9])	812	rxvt_img::scale (int new_width, int new_height)
400	{	813	{
		814	if (w == new_width && h == new_height)
		815	return clone ();
		816
		817	int old_repeat_mode = repeat;
		818	repeat = RepeatPad; // not right, but xrender can't properly scale it seems
		819
		820	rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h));
		821
		822	repeat = old_repeat_mode;
		823	img->repeat = repeat;
		824
		825	return img;
		826	}
		827
		828	rxvt_img *
		829	rxvt_img::rotate (int cx, int cy, nv phi)
		830	{
		831	#if 0
		832	{ c, -s, cx - c * cx + s * cy },
		833	{ s, c, cy - s * cx - c * cy },
		834	{ 0, 0, 1 }
		835	#endif
		836
		837	move (-cx, -cy);
		838	rxvt_img *img = transform (mat3x3::rotate (phi));
		839	move ( cx, cy);
		840	img->move (cx, cy);
		841
		842	return img;
		843	}
		844
		845	rxvt_img *
		846	rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
		847	{
		848	if (new_format == format)
		849	return clone ();
		850
401	rxvt_img *img = new rxvt_img (s, format, new_width, new_height);	851	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
402	img->alloc ();	852	img->alloc ();
403		853
404	Display *dpy = s->display->dpy;	854	Display *dpy = s->display->dpy;
405	XRenderPictureAttributes pa;	855	Picture src = picture ();
406	pa.repeat = repeat;
407	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
408	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	856	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
		857	int op = PictOpSrc;
409		858
410	XTransform xfrm;	859	if (format->direct.alphaMask && !new_format->direct.alphaMask)
		860	{
		861	// does it have to be that complicated
		862	XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
		863	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
411		864
412	for (int i = 0; i < 3; ++i)	865	op = PictOpOver;
413	for (int j = 0; j < 3; ++j)	866	}
414	xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
415		867
416	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
417	XRenderSetPictureTransform (dpy, src, &xfrm);
418	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);	868	XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
419		869
420	XRenderFreePicture (dpy, src);	870	XRenderFreePicture (dpy, src);
421	XRenderFreePicture (dpy, dst);	871	XRenderFreePicture (dpy, dst);
422		872
423	return img;	873	return img;
424	}	874	}
425		875
426	rxvt_img *	876	rxvt_img *
427	rxvt_img::scale (int new_width, int new_height)
428	{
429	double matrix[9] = {
430	w / (double)new_width, 0, 0,
431	0, h / (double)new_height, 0,
432	0, 0, 1
433	};
434
435	return transform (new_width, new_height, matrix);
436	}
437
438	rxvt_img *
439	rxvt_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
453	rxvt_img *
454	rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg)
455	{
456	if (new_format == format)
457	return clone ();
458
459	rxvt_img *img = new rxvt_img (s, new_format, w, h);
460	img->alloc ();
461
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;
466
467	if (format->direct.alphaMask && !new_format->direct.alphaMask)
468	{
469	// 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 };
474	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
475
476	op = PictOpOver;
477	}
478
479	XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
480
481	XRenderFreePicture (dpy, src);
482	XRenderFreePicture (dpy, dst);
483
484	return img;
485	}
486
487	rxvt_img *
488	rxvt_img::blend (rxvt_img *img, double factor)	877	rxvt_img::blend (rxvt_img *img, nv factor)
489	{	878	{
490	rxvt_img *img2 = clone ();	879	rxvt_img *img2 = clone ();
491	Display *dpy = s->display->dpy;	880	Display *dpy = s->display->dpy;
492	Picture src = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	881	Picture src = img->picture ();
493	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);	882	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
494	Picture mask = create_xrender_mask (dpy, img->pm, False);	883	Picture mask = create_xrender_mask (dpy, img->pm, False, False);
495		884
496	XRenderColor mask_c;	885	XRenderColor mask_c;
497		886
498	mask_c.alpha = float_to_component (factor);	887	mask_c.alpha = float_to_component (factor);
499	mask_c.red =	888	mask_c.red =

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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 1.97 by sf-exg, Sun Jun 17 17:06:47 2012 UTC

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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 1.97 by sf-exg, Sun Jun 17 17:06:47 2012 UTC