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

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.21 by sf-exg, Tue Jun 5 14:59:44 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
7	#define float_to_component(d) ((d) * 65535.99)	31	typedef rxvt_img::nv nv;
8		32
		33	namespace
		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
		230	static XRenderPictFormat *
		231	find_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
9	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height)	250	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int x, int y, int width, int height, int repeat)
10	: s(screen), w(width), h(height), format(format), shared(false)
11	{
12	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
13	}
14
15	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height, Pixmap pixmap)
16	: s(screen), pm(pixmap), w(width), h(height), format(format), shared(false)	251	: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
		252	pm(0), ref(0)
17	{	253	{
		254	}
		255
		256	rxvt_img::rxvt_img (const rxvt_img &img)
		257	: s(img.s), x(img.x), y(img.y), w(img.w), h(img.h), format(img.format), repeat(img.repeat), pm(img.pm), ref(img.ref)
		258	{
		259	++ref->cnt;
18	}	260	}
19		261
20	rxvt_img *	262	rxvt_img *
21	rxvt_img::new_from_root (rxvt_screen *s)	263	rxvt_img::new_from_root (rxvt_screen *s)
22	{	264	{
23	Display *dpy = s->display->dpy;	265	Display *dpy = s->dpy;
24	unsigned int root_pm_w, root_pm_h;	266	unsigned int root_pm_w, root_pm_h;
25	Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]);	267	Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa [XA_XROOTPMAP_ID]);
26	if (root_pixmap == None)	268	if (root_pixmap == None)
27	root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]);	269	root_pixmap = s->display->get_pixmap_property (s->display->xa [XA_ESETROOT_PMAP_ID]);
28		270
29	if (root_pixmap == None)	271	if (root_pixmap == None)
30	return 0;	272	return 0;
31		273
32	Window wdummy;	274	Window wdummy;
37	return 0;	279	return 0;
38		280
39	rxvt_img *img = new rxvt_img (	281	rxvt_img *img = new rxvt_img (
40	s,	282	s,
41	XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),	283	XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
		284	0,
		285	0,
42	root_pm_w,	286	root_pm_w,
43	root_pm_h,	287	root_pm_h
44	root_pixmap
45	);	288	);
46		289
47	img->shared = true;	290	img->pm = root_pixmap;
		291	img->ref = new pixref (root_pm_w, root_pm_h);
		292	img->ref->ours = false;
		293
		294	return img;
		295	}
		296
		297	# if HAVE_PIXBUF
		298
		299	rxvt_img *
		300	rxvt_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);
48		396
49	return img;	397	return img;
50	}	398	}
51		399
52	rxvt_img *	400	rxvt_img *
…		…
56	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);	404	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
57		405
58	if (!pb)	406	if (!pb)
59	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);	407	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
60		408
61	rxvt_img *img = new rxvt_img (	409	rxvt_img *img = new_from_pixbuf (s, pb);
62	s,
63	XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
64	gdk_pixbuf_get_width (pb),
65	gdk_pixbuf_get_height (pb)
66	);
67		410
68	img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);	411	g_object_unref (pb);
69		412
70	return img;	413	return img;
71	}	414	}
72		415
		416	# endif
		417
		418	void
		419	rxvt_img::destroy ()
		420	{
		421	if (--ref->cnt)
		422	return;
		423
		424	if (pm && ref->ours)
		425	XFreePixmap (s->dpy, pm);
		426
		427	delete ref;
		428	}
		429
73	rxvt_img::~rxvt_img ()	430	rxvt_img::~rxvt_img ()
74	{	431	{
75	if (!shared)	432	destroy ();
76	XFreePixmap (s->display->dpy, pm);	433	}
		434
		435	void
		436	rxvt_img::alloc ()
		437	{
		438	pm = XCreatePixmap (s->dpy, s->display->root, w, h, format->depth);
		439	ref = new pixref (w, h);
		440	}
		441
		442	rxvt_img *
		443	rxvt_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
		451	Picture
		452	rxvt_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;
77	}	461	}
78		462
79	void	463	void
80	rxvt_img::unshare ()	464	rxvt_img::unshare ()
81	{	465	{
82	if (!shared)	466	if (ref->cnt == 1 && ref->ours)
83	return;	467	return;
84		468
		469	Pixmap pm2 = XCreatePixmap (s->dpy, s->display->root, ref->w, ref->h, format->depth);
		470	GC gc = XCreateGC (s->dpy, pm, 0, 0);
		471	XCopyArea (s->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
		472	XFreeGC (s->dpy, gc);
		473
		474	destroy ();
		475
		476	pm = pm2;
		477	ref = new pixref (ref->w, ref->h);
		478	}
		479
		480	void
		481	rxvt_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
		491	void
		492	rxvt_img::fill (const rgba &c)
		493	{
		494	fill (c, 0, 0, w, h);
		495	}
		496
		497	void
		498	rxvt_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
85	rxvt_img *img = clone ();	507	rxvt_img *img = cc;
86		508
87	::swap (pm , img->pm);	509	::swap (img->ref, ref);
88	::swap (shared, img->shared);	510	::swap (img->pm , pm );
89		511
90	delete img;	512	delete img;
91	}	513	}
92		514
93	void
94	rxvt_img::fill (const rxvt_color &c)
95	{
96	XGCValues gcv;
97	gcv.foreground = c;
98	GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);
99	XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);
100	XFreeGC (s->display->dpy, gc);
101	}
102
103	static void	515	static void
104	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)	516	get_gaussian_kernel (int radius, int width, nv kernel, XFixed params)
105	{	517	{
106	double sigma = radius / 2.0;	518	nv sigma = radius / 2.0;
107	double scale = sqrt (2.0 * M_PI) * sigma;	519	nv scale = sqrt (2.0 * M_PI) * sigma;
108	double sum = 0.0;	520	nv sum = 0.0;
109		521
110	for (int i = 0; i < width; i++)	522	for (int i = 0; i < width; i++)
111	{	523	{
112	double x = i - width / 2;	524	nv x = i - width / 2;
113	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;	525	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
114	sum += kernel[i];	526	sum += kernel[i];
115	}	527	}
116		528
117	params[0] = XDoubleToFixed (width);	529	params[0] = XDoubleToFixed (width);
…		…
119		531
120	for (int i = 0; i < width; i++)	532	for (int i = 0; i < width; i++)
121	params[i+2] = XDoubleToFixed (kernel[i] / sum);	533	params[i+2] = XDoubleToFixed (kernel[i] / sum);
122	}	534	}
123		535
124	void	536	rxvt_img *
125	rxvt_img::blur (int rh, int rv)	537	rxvt_img::blur (int rh, int rv)
126	{	538	{
127	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))	539	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
128	return;	540	return clone ();
129		541
130	Display *dpy = s->display->dpy;	542	Display *dpy = s->dpy;
131	int size = max (rh, rv) * 2 + 1;	543	int size = max (rh, rv) * 2 + 1;
132	double kernel = (double )malloc (size * sizeof (double));	544	nv kernel = (nv )malloc (size * sizeof (nv));
133	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));	545	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
		546	rxvt_img *img = new_empty ();
134		547
135	XRenderPictureAttributes pa;	548	XRenderPictureAttributes pa;
136
137	pa.repeat = RepeatPad;	549	pa.repeat = RepeatPad;
138	Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa);	550	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
		551	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
		552
139	Pixmap tmp = XCreatePixmap (dpy, pm, w, h, format->depth);	553	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
140	Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa);	554	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
141	XFreePixmap (dpy, tmp);	555	XFreePixmap (dpy, tmp_pm);
142		556
143	if (kernel && params)	557	if (kernel && params)
144	{	558	{
145	size = rh * 2 + 1;	559	size = rh * 2 + 1;
146	get_gaussian_kernel (rh, size, kernel, params);	560	get_gaussian_kernel (rh, size, kernel, params);
147		561
148	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);	562	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
149	XRenderComposite (dpy,	563	XRenderComposite (dpy,
150	PictOpSrc,	564	PictOpSrc,
151	src,	565	src,
		566	None,
		567	tmp,
		568	0, 0,
		569	0, 0,
		570	0, 0,
		571	w, h);
		572
		573	size = rv * 2 + 1;
		574	get_gaussian_kernel (rv, size, kernel, params);
		575	::swap (params[0], params[1]);
		576
		577	XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
		578	XRenderComposite (dpy,
		579	PictOpSrc,
		580	tmp,
152	None,	581	None,
153	dst,	582	dst,
154	0, 0,	583	0, 0,
155	0, 0,	584	0, 0,
156	0, 0,	585	0, 0,
157	w, h);	586	w, h);
158
159	::swap (src, dst);
160
161	size = rv * 2 + 1;
162	get_gaussian_kernel (rv, size, kernel, params);
163	::swap (params[0], params[1]);
164
165	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
166	XRenderComposite (dpy,
167	PictOpSrc,
168	src,
169	None,
170	dst,
171	0, 0,
172	0, 0,
173	0, 0,
174	w, h);
175	}	587	}
176		588
177	free (kernel);	589	free (kernel);
178	free (params);	590	free (params);
		591
179	XRenderFreePicture (dpy, src);	592	XRenderFreePicture (dpy, src);
180	XRenderFreePicture (dpy, dst);	593	XRenderFreePicture (dpy, dst);
181	}	594	XRenderFreePicture (dpy, tmp);
182		595
183	static Picture
184	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
185	{
186	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
187
188	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
189	XRenderPictureAttributes pa;
190	pa.repeat = True;
191	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
192
193	XFreePixmap (dpy, pixmap);
194
195	return mask;	596	return img;
		597	}
		598
		599	ecb_noinline static void
		600	extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
		601	{
		602	int32_t x = clamp (c, cl0, cl1);
		603	c -= x;
		604	xc = x;
		605	}
		606
		607	ecb_noinline static bool
		608	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)
		609	{
		610	extract (cl0, cl1, r, xr);
		611	extract (cl0, cl1, g, xg);
		612	extract (cl0, cl1, b, xb);
		613	extract (cl0, cl1, a, xa);
		614
		615	return xr \| xg \| xb \| xa;
196	}	616	}
197		617
198	void	618	void
199	rxvt_img::brightness (double r, double g, double b, double a)	619	rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
200	{	620	{
		621	unshare ();
		622
201	Display *dpy = s->display->dpy;	623	Display *dpy = s->dpy;
202	Picture src = create_xrender_mask (dpy, pm, True);
203	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	624	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
204		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;
205	XRenderColor mask_c;	630	XRenderColor mask_c;
206	mask_c.red = float_to_component (r);	631
207	mask_c.green = float_to_component (g);	632	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
208	mask_c.blue = float_to_component (b);
209	mask_c.alpha = float_to_component (a);
210	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	633	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
211		634
212	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	}
		647
		648	XRenderFreePicture (dpy, dst);
213	}	649	}
214		650
215	void	651	void
216	rxvt_img::contrast (double r, double g, double b, double a)	652	rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
217	{	653	{
218	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))	654	if (r < 0 \|\| g < 0 \|\| b < 0 \|\| a < 0)
219	return;	655	rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
220		656
221	Display *dpy = s->display->dpy;	657	// premultiply (yeah, these are not exact, sue me or fix it)
222	Picture src = create_xrender_mask (dpy, pm, True);	658	r = (r * (a >> 8)) >> 8;
223	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	659	g = (g * (a >> 8)) >> 8;
		660	b = (b * (a >> 8)) >> 8;
224		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;
225	XRenderColor mask_c;	672	XRenderColor mask_c;
226	mask_c.red = float_to_component (r);
227	mask_c.green = float_to_component (g);
228	mask_c.blue = float_to_component (b);
229	mask_c.alpha = float_to_component (a);
230	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
231		673
232	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))
233	}
234
235	bool
236	rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
237	{
238	Display *dpy = s->display->dpy;
239
240	if (s->visual->c_class != TrueColor)
241	return false;
242
243	uint32_t red_mask, green_mask, blue_mask, alpha_mask;
244
245	red_mask = (uint32_t)format->direct.redMask << format->direct.red;
246	green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
247	blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue;
248	alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
249
250	int width_r = ecb_popcount32 (red_mask);
251	int width_g = ecb_popcount32 (green_mask);
252	int width_b = ecb_popcount32 (blue_mask);
253	int width_a = ecb_popcount32 (alpha_mask);
254
255	if (width_r > 8 \|\| width_g > 8 \|\| width_b > 8 \|\| width_a > 8)
256	return false;
257
258	int sh_r = ecb_ctz32 (red_mask);
259	int sh_g = ecb_ctz32 (green_mask);
260	int sh_b = ecb_ctz32 (blue_mask);
261	int sh_a = ecb_ctz32 (alpha_mask);
262
263	if (width > 32767 \|\| height > 32767)
264	return false;
265
266	XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
267	width, height, 32, 0);
268	if (!ximage)
269	return false;
270
271	if (height > INT_MAX / ximage->bytes_per_line
272	\|\| !(ximage->data = (char )malloc (height ximage->bytes_per_line)))
273	{
274	XDestroyImage (ximage);
275	return false;
276	}
277
278	GC gc = XCreateGC (dpy, pm, 0, 0);
279
280	ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
281
282	int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
283	int channels = gdk_pixbuf_get_n_channels (pixbuf);
284	unsigned char row = gdk_pixbuf_get_pixels (pixbuf) + src_y rowstride + src_x * channels;
285	char *line = ximage->data;
286
287	rgba c (0, 0, 0);
288
289	if (channels == 4 && alpha_mask == 0)
290	{
291	//pix_colors[Color_bg].get (c);
292	//TODO
293	c.r = 0xffff; c.g = 0xc0c0; c.b = 0xcbcb;//D
294	c.r >>= 8;
295	c.g >>= 8;
296	c.b >>= 8;
297	}
298
299	for (int y = 0; y < height; y++)
300	{
301	for (int x = 0; x < width; x++)
302	{	675	{
303	unsigned char pixel = row + x channels;	676	XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &mask_c, 0, 0, 1, 1);
304	uint32_t value;	677	XRenderComposite (cc.dpy, PictOpAdd, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
305	unsigned char r, g, b, a;
306
307	if (channels == 4)
308	{
309	a = pixel[3];
310	r = (pixel[0] * a + c.r * (0xff - a)) / 0xff;
311	g = (pixel[1] * a + c.g * (0xff - a)) / 0xff;
312	b = (pixel[2] * a + c.b * (0xff - a)) / 0xff;
313	}
314	else
315	{
316	a = 0xff;
317	r = pixel[0];
318	g = pixel[1];
319	b = pixel[2];
320	}
321
322	value = ((r >> (8 - width_r)) << sh_r)
323	\| ((g >> (8 - width_g)) << sh_g)
324	\| ((b >> (8 - width_b)) << sh_b)
325	\| ((a >> (8 - width_a)) << sh_a);
326
327	if (ximage->bits_per_pixel == 32)
328	((uint32_t *)line)[x] = value;
329	else
330	XPutPixel (ximage, x, y, value);
331	}	678	}
332
333	row += rowstride;
334	line += ximage->bytes_per_line;
335	}	679	}
336		680
337	XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);	681	::swap (img->ref, ref);
338	XDestroyImage (ximage);	682	::swap (img->pm , pm );
339	XFreeGC (dpy, gc);
340		683
341	return true;	684	delete img;
		685	}
		686
		687	void
		688	rxvt_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);
342	}	698	}
343		699
344	rxvt_img *	700	rxvt_img *
345	rxvt_img::clone ()	701	rxvt_img::clone ()
346	{	702	{
347	rxvt_img *img = new rxvt_img (s, format, w, h);	703	return new rxvt_img (*this);
		704	}
348		705
349	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);	706	rxvt_img *
350	XCopyArea (s->display->dpy, pm, img->pm, gc, 0, 0, w, h, 0, 0);	707	rxvt_img::reify ()
351	XFreeGC (s->display->dpy, gc);	708	{
		709	if (x == 0 && y == 0 && w == ref->w && h == ref->h)
		710	return clone ();
		711
		712	Display *dpy = s->dpy;
		713
		714	// add an alpha channel if...
		715	bool alpha = !format->direct.alphaMask // pixmap has none yet
		716	&& (x \|\| y) // we need one because of non-zero offset
		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
		729	XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, -x, -y, 0, 0, 0, 0, w, h);
		730
		731	return cc;
		732	}
		733
		734	rxvt_img *
		735	rxvt_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	}
352		751
353	return img;	752	return img;
354	}	753	}
355		754
356	rxvt_img *	755	rxvt_img *
357	rxvt_img::sub_rect (int x, int y, int width, int height, int repeat)	756	rxvt_img::transform (const nv matrix[3][3])
358	{	757	{
359	rxvt_img *img = new rxvt_img (s, format, width, height);	758	return transform (mat3x3 (&matrix[0][0]));
360
361	Display *dpy = s->display->dpy;
362	XRenderPictureAttributes pa;
363	pa.repeat = repeat;
364	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
365	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
366
367	XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, width, height);
368
369	XRenderFreePicture (dpy, src);
370	XRenderFreePicture (dpy, dst);
371
372	return img;
373	}	759	}
374		760
375	rxvt_img *	761	rxvt_img *
376	rxvt_img::transform (int new_width, int new_height, double matrix[9], int repeat)	762	rxvt_img::transform (const nv *matrix)
377	{	763	{
378	rxvt_img *img = new rxvt_img (s, format, new_width, new_height);	764	mat3x3 m (matrix);
379		765
380	Display *dpy = s->display->dpy;	766	// calculate new pixel bounding box coordinates
381	XRenderPictureAttributes pa;	767	nv rmin[2], rmax[2];
382	pa.repeat = repeat;	768
383	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);	769	for (int i = 0; i < 2; ++i)
384	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));
385		792
386	XTransform xfrm;	793	XTransform xfrm;
387		794
388	for (int i = 0; i < 3; ++i)	795	for (int i = 0; i < 3; ++i)
389	for (int j = 0; j < 3; ++j)	796	for (int j = 0; j < 3; ++j)
390	xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);	797	xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
391		798
392	XRenderSetPictureFilter (dpy, src, "good", 0, 0);	799	XRenderSetPictureFilter (cc.dpy, cc.src, "good", 0, 0);
393	XRenderSetPictureTransform (dpy, src, &xfrm);	800	XRenderSetPictureTransform (cc.dpy, cc.src, &xfrm);
394	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);
395		802
396	XRenderFreePicture (dpy, src);	803	return cc;
397	XRenderFreePicture (dpy, dst);	804	}
		805
		806	rxvt_img *
		807	rxvt_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;
398		819
399	return img;	820	return img;
400	}	821	}
401		822
402	rxvt_img *	823	rxvt_img *
403	rxvt_img::scale (int new_width, int new_height)	824	rxvt_img::rotate (int cx, int cy, nv phi)
404	{	825	{
405	double matrix[9] = {	826	move (-cx, -cy);
406	w / (double)new_width, 0, 0,	827	rxvt_img *img = transform (mat3x3::rotate (phi));
407	0, h / (double)new_height, 0,	828	move ( cx, cy);
408	0, 0, 1	829	img->move (cx, cy);
409	};
410
411	return transform (new_width, new_height, matrix);
412	}
413
414	rxvt_img *
415	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi, int repeat)
416	{
417	double s = sin (phi);
418	double c = cos (phi);
419
420	double matrix[9] = {
421	c, -s, -c * x + s * y + x,
422	s, c, -s * x - c * y + y,
423	0, 0, 1
424	};
425
426	return transform (new_width, new_height, matrix, repeat);
427	}
428
429	rxvt_img *
430	rxvt_img::convert_to (XRenderPictFormat *new_format)
431	{
432	rxvt_img *img = new rxvt_img (s, new_format, w, h);
433
434	Display *dpy = s->display->dpy;
435	Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);
436	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
437
438	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
439
440	XRenderFreePicture (dpy, src);
441	XRenderFreePicture (dpy, dst);
442		830
443	return img;	831	return img;
444	}	832	}
445		833
		834	rxvt_img *
		835	rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
		836	{
		837	if (new_format == format)
		838	return clone ();
		839
		840	composer cc (this, new rxvt_img (s, new_format, x, y, w, h, repeat));
		841
		842	int op = PictOpSrc;
		843
		844	if (format->direct.alphaMask && !new_format->direct.alphaMask)
		845	{
		846	// does it have to be that complicated
		847	XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
		848	XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);
		849
		850	op = PictOpOver;
		851	}
		852
		853	XRenderComposite (cc.dpy, op, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
		854
		855	return cc;
		856	}
		857
		858	rxvt_img *
		859	rxvt_img::tint (const rgba &c)
		860	{
		861	composer cc (this);
		862	cc.mask (true);
		863	cc.fill (c);
		864
		865	XRenderComposite (cc.dpy, PictOpSrc, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
		866
		867	return cc;
		868	}
		869
		870	rxvt_img *
		871	rxvt_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;
		885	}
		886
446	#endif	887	#endif
447		888

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Comparing rxvt-unicode/src/rxvtimg.C (file contents): Revision 1.21 by sf-exg, Tue Jun 5 14:59:44 2012 UTC vs. Revision 1.100 by root, Mon Jul 2 02:01:41 2012 UTC

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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.21 by sf-exg, Tue Jun 5 14:59:44 2012 UTC vs.
Revision 1.100 by root, Mon Jul 2 02:01:41 2012 UTC