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

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.22 by sf-exg, Tue Jun 5 15:18:23 2012 UTC vs.
Revision 1.98 by root, Sun Jun 17 21:58:18 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)
		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, 0, 0, w, h);
		488	XRenderFreePicture (dpy, src);
		489	}
		490
		491	void
		492	rxvt_img::add_alpha ()
		493	{
		494	if (format->direct.alphaMask)
		495	return;
		496
		497	composer cc (this, new rxvt_img (s, find_alpha_format_for (s->dpy, format), x, y, w, h, repeat));
		498
		499	XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
		500
85	rxvt_img *img = clone ();	501	rxvt_img *img = cc;
86		502
87	::swap (pm , img->pm);	503	::swap (img->ref, ref);
88	::swap (shared, img->shared);	504	::swap (img->pm , pm );
89		505
90	delete img;	506	delete img;
91	}	507	}
92		508
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	509	static void
104	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)	510	get_gaussian_kernel (int radius, int width, nv kernel, XFixed params)
105	{	511	{
106	double sigma = radius / 2.0;	512	nv sigma = radius / 2.0;
107	double scale = sqrt (2.0 * M_PI) * sigma;	513	nv scale = sqrt (2.0 * M_PI) * sigma;
108	double sum = 0.0;	514	nv sum = 0.0;
109		515
110	for (int i = 0; i < width; i++)	516	for (int i = 0; i < width; i++)
111	{	517	{
112	double x = i - width / 2;	518	nv x = i - width / 2;
113	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;	519	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
114	sum += kernel[i];	520	sum += kernel[i];
115	}	521	}
116		522
117	params[0] = XDoubleToFixed (width);	523	params[0] = XDoubleToFixed (width);
…		…
125	rxvt_img::blur (int rh, int rv)	531	rxvt_img::blur (int rh, int rv)
126	{	532	{
127	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))	533	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
128	return clone ();	534	return clone ();
129		535
130	Display *dpy = s->display->dpy;	536	Display *dpy = s->dpy;
131	int size = max (rh, rv) * 2 + 1;	537	int size = max (rh, rv) * 2 + 1;
132	double kernel = (double )malloc (size * sizeof (double));	538	nv kernel = (nv )malloc (size * sizeof (nv));
133	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));	539	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
134	rxvt_img *img = new rxvt_img (s, format, w, h);	540	rxvt_img *img = new_empty ();
135		541
136	XRenderPictureAttributes pa;	542	XRenderPictureAttributes pa;
137
138	pa.repeat = RepeatPad;	543	pa.repeat = RepeatPad;
139	Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa);	544	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
140	Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);	545	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
141		546
142	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);	547	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
143	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);	548	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
144	XFreePixmap (dpy, tmp_pm);	549	XFreePixmap (dpy, tmp_pm);
145		550
…		…
161		566
162	size = rv * 2 + 1;	567	size = rv * 2 + 1;
163	get_gaussian_kernel (rv, size, kernel, params);	568	get_gaussian_kernel (rv, size, kernel, params);
164	::swap (params[0], params[1]);	569	::swap (params[0], params[1]);
165		570
166	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);	571	XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
167	XRenderComposite (dpy,	572	XRenderComposite (dpy,
168	PictOpSrc,	573	PictOpSrc,
169	tmp,	574	tmp,
170	None,	575	None,
171	dst,	576	dst,
…		…
175	w, h);	580	w, h);
176	}	581	}
177		582
178	free (kernel);	583	free (kernel);
179	free (params);	584	free (params);
		585
180	XRenderFreePicture (dpy, src);	586	XRenderFreePicture (dpy, src);
181	XRenderFreePicture (dpy, dst);	587	XRenderFreePicture (dpy, dst);
182	XRenderFreePicture (dpy, tmp);	588	XRenderFreePicture (dpy, tmp);
183		589
184	return img;	590	return img;
185	}	591	}
186		592
187	static Picture	593	ecb_noinline static void
188	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)	594	extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
189	{	595	{
190	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);	596	int32_t x = clamp (c, cl0, cl1);
		597	c -= x;
		598	xc = x;
		599	}
191		600
192	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);	601	ecb_noinline static bool
193	XRenderPictureAttributes pa;	602	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)
194	pa.repeat = True;	603	{
195	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);	604	extract (cl0, cl1, r, xr);
		605	extract (cl0, cl1, g, xg);
		606	extract (cl0, cl1, b, xb);
		607	extract (cl0, cl1, a, xa);
196		608
197	XFreePixmap (dpy, pixmap);	609	return xr \| xg \| xb \| xa;
198
199	return mask;
200	}	610	}
201		611
202	void	612	void
203	rxvt_img::brightness (double r, double g, double b, double a)	613	rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
204	{	614	{
		615	unshare ();
		616
205	Display *dpy = s->display->dpy;	617	Display *dpy = s->dpy;
206	Picture src = create_xrender_mask (dpy, pm, True);
207	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	618	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
208		619
		620	// loop should not be needed for brightness, as only -1..1 makes sense
		621	//while (r \| g \| b \| a)
		622	{
		623	unsigned short xr, xg, xb, xa;
209	XRenderColor mask_c;	624	XRenderColor mask_c;
210	mask_c.red = float_to_component (r);	625
211	mask_c.green = float_to_component (g);	626	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
212	mask_c.blue = float_to_component (b);
213	mask_c.alpha = float_to_component (a);
214	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	627	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
215		628
216	XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	629	if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
		630	{
		631	XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
		632	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		633	mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
		634	mask_c.green = -mask_c.green;
		635	mask_c.blue = -mask_c.blue;
		636	mask_c.alpha = -mask_c.alpha;
		637	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
		638	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		639	}
		640	}
		641
		642	XRenderFreePicture (dpy, dst);
217	}	643	}
218		644
219	void	645	void
220	rxvt_img::contrast (double r, double g, double b, double a)	646	rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
221	{	647	{
222	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))	648	if (r < 0 \|\| g < 0 \|\| b < 0 \|\| a < 0)
223	return;	649	rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
224		650
225	Display *dpy = s->display->dpy;	651	// premultiply (yeah, these are not exact, sue me or fix it)
226	Picture src = create_xrender_mask (dpy, pm, True);	652	r = (r * (a >> 8)) >> 8;
227	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	653	g = (g * (a >> 8)) >> 8;
		654	b = (b * (a >> 8)) >> 8;
228		655
		656	composer cc (this);
		657	rxvt_img *img = cc;
		658	img->fill (rgba (0, 0, 0, 0));
		659
		660	cc.mask (true);
		661
		662	//TODO: this operator does not yet implement some useful contrast
		663	while (r \| g \| b \| a)
		664	{
		665	unsigned short xr, xg, xb, xa;
229	XRenderColor mask_c;	666	XRenderColor mask_c;
230	mask_c.red = float_to_component (r);
231	mask_c.green = float_to_component (g);
232	mask_c.blue = float_to_component (b);
233	mask_c.alpha = float_to_component (a);
234	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
235		667
236	XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	668	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
237	}
238
239	bool
240	rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
241	{
242	Display *dpy = s->display->dpy;
243
244	if (s->visual->c_class != TrueColor)
245	return false;
246
247	uint32_t red_mask, green_mask, blue_mask, alpha_mask;
248
249	red_mask = (uint32_t)format->direct.redMask << format->direct.red;
250	green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
251	blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue;
252	alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
253
254	int width_r = ecb_popcount32 (red_mask);
255	int width_g = ecb_popcount32 (green_mask);
256	int width_b = ecb_popcount32 (blue_mask);
257	int width_a = ecb_popcount32 (alpha_mask);
258
259	if (width_r > 8 \|\| width_g > 8 \|\| width_b > 8 \|\| width_a > 8)
260	return false;
261
262	int sh_r = ecb_ctz32 (red_mask);
263	int sh_g = ecb_ctz32 (green_mask);
264	int sh_b = ecb_ctz32 (blue_mask);
265	int sh_a = ecb_ctz32 (alpha_mask);
266
267	if (width > 32767 \|\| height > 32767)
268	return false;
269
270	XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
271	width, height, 32, 0);
272	if (!ximage)
273	return false;
274
275	if (height > INT_MAX / ximage->bytes_per_line
276	\|\| !(ximage->data = (char )malloc (height ximage->bytes_per_line)))
277	{
278	XDestroyImage (ximage);
279	return false;
280	}
281
282	GC gc = XCreateGC (dpy, pm, 0, 0);
283
284	ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
285
286	int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
287	int channels = gdk_pixbuf_get_n_channels (pixbuf);
288	unsigned char row = gdk_pixbuf_get_pixels (pixbuf) + src_y rowstride + src_x * channels;
289	char *line = ximage->data;
290
291	rgba c (0, 0, 0);
292
293	if (channels == 4 && alpha_mask == 0)
294	{
295	//pix_colors[Color_bg].get (c);
296	//TODO
297	c.r = 0xffff; c.g = 0xc0c0; c.b = 0xcbcb;//D
298	c.r >>= 8;
299	c.g >>= 8;
300	c.b >>= 8;
301	}
302
303	for (int y = 0; y < height; y++)
304	{
305	for (int x = 0; x < width; x++)
306	{	669	{
307	unsigned char pixel = row + x channels;	670	XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &mask_c, 0, 0, 1, 1);
308	uint32_t value;	671	XRenderComposite (cc.dpy, PictOpAdd, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
309	unsigned char r, g, b, a;
310
311	if (channels == 4)
312	{
313	a = pixel[3];
314	r = (pixel[0] * a + c.r * (0xff - a)) / 0xff;
315	g = (pixel[1] * a + c.g * (0xff - a)) / 0xff;
316	b = (pixel[2] * a + c.b * (0xff - a)) / 0xff;
317	}
318	else
319	{
320	a = 0xff;
321	r = pixel[0];
322	g = pixel[1];
323	b = pixel[2];
324	}
325
326	value = ((r >> (8 - width_r)) << sh_r)
327	\| ((g >> (8 - width_g)) << sh_g)
328	\| ((b >> (8 - width_b)) << sh_b)
329	\| ((a >> (8 - width_a)) << sh_a);
330
331	if (ximage->bits_per_pixel == 32)
332	((uint32_t *)line)[x] = value;
333	else
334	XPutPixel (ximage, x, y, value);
335	}	672	}
336
337	row += rowstride;
338	line += ximage->bytes_per_line;
339	}	673	}
340		674
341	XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);	675	::swap (img->ref, ref);
342	XDestroyImage (ximage);	676	::swap (img->pm , pm );
343	XFreeGC (dpy, gc);
344		677
345	return true;	678	delete img;
		679	}
		680
		681	void
		682	rxvt_img::draw (rxvt_img *img, int op, nv mask)
		683	{
		684	unshare ();
		685
		686	composer cc (img, this);
		687
		688	if (mask != 1.)
		689	cc.mask (rgba (0, 0, 0, float_to_component (mask)));
		690
		691	XRenderComposite (cc.dpy, op, cc.src, cc.msk, cc.dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h);
346	}	692	}
347		693
348	rxvt_img *	694	rxvt_img *
349	rxvt_img::clone ()	695	rxvt_img::clone ()
350	{	696	{
351	rxvt_img *img = new rxvt_img (s, format, w, h);	697	return new rxvt_img (*this);
		698	}
352		699
353	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);	700	rxvt_img *
354	XCopyArea (s->display->dpy, pm, img->pm, gc, 0, 0, w, h, 0, 0);	701	rxvt_img::reify ()
355	XFreeGC (s->display->dpy, gc);	702	{
		703	if (x == 0 && y == 0 && w == ref->w && h == ref->h)
		704	return clone ();
		705
		706	Display *dpy = s->dpy;
		707
		708	// add an alpha channel if...
		709	bool alpha = !format->direct.alphaMask // pixmap has none yet
		710	&& (x \|\| y) // we need one because of non-zero offset
		711	&& repeat == RepeatNone; // and we have no good pixels to fill with
		712
		713	composer cc (this, new rxvt_img (s, alpha ? find_alpha_format_for (s->dpy, format) : format,
		714	0, 0, w, h, repeat));
		715
		716	if (alpha)
		717	{
		718	XRenderColor rc = { 0, 0, 0, 0 };
		719	XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
		720	XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
		721	}
		722	else
		723	XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, -x, -y, 0, 0, 0, 0, w, h);
		724
		725	return cc;
		726	}
		727
		728	rxvt_img *
		729	rxvt_img::sub_rect (int x, int y, int width, int height)
		730	{
		731	rxvt_img *img = clone ();
		732
		733	img->x -= x;
		734	img->y -= y;
		735
		736	if (w != width \|\| h != height)
		737	{
		738	img->w = width;
		739	img->h = height;
		740
		741	rxvt_img *img2 = img->reify ();
		742	delete img;
		743	img = img2;
		744	}
356		745
357	return img;	746	return img;
358	}	747	}
359		748
360	rxvt_img *	749	rxvt_img *
361	rxvt_img::sub_rect (int x, int y, int width, int height, int repeat)	750	rxvt_img::transform (const nv matrix[3][3])
362	{	751	{
363	rxvt_img *img = new rxvt_img (s, format, width, height);	752	return transform (mat3x3 (&matrix[0][0]));
364
365	Display *dpy = s->display->dpy;
366	XRenderPictureAttributes pa;
367	pa.repeat = repeat;
368	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
369	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
370
371	XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, width, height);
372
373	XRenderFreePicture (dpy, src);
374	XRenderFreePicture (dpy, dst);
375
376	return img;
377	}	753	}
378		754
379	rxvt_img *	755	rxvt_img *
380	rxvt_img::transform (int new_width, int new_height, double matrix[9], int repeat)	756	rxvt_img::transform (const nv *matrix)
381	{	757	{
382	rxvt_img *img = new rxvt_img (s, format, new_width, new_height);	758	mat3x3 m (matrix);
383		759
384	Display *dpy = s->display->dpy;	760	// calculate new pixel bounding box coordinates
385	XRenderPictureAttributes pa;	761	nv rmin[2], rmax[2];
386	pa.repeat = repeat;	762
387	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);	763	for (int i = 0; i < 2; ++i)
388	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	764	{
		765	nv v;
		766
		767	v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v;
		768	v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
		769	v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		770	v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		771	}
		772
		773	float sx = rmin [0] - x;
		774	float sy = rmin [1] - y;
		775
		776	// TODO: adjust matrix for subpixel accuracy
		777	int nx = floor (rmin [0]);
		778	int ny = floor (rmin [1]);
		779
		780	int new_width = ceil (rmax [0] - rmin [0]);
		781	int new_height = ceil (rmax [1] - rmin [1]);
		782
		783	mat3x3 inv = (mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y)).inverse ();
		784
		785	composer cc (this, new rxvt_img (s, format, nx, ny, new_width, new_height, repeat));
389		786
390	XTransform xfrm;	787	XTransform xfrm;
391		788
392	for (int i = 0; i < 3; ++i)	789	for (int i = 0; i < 3; ++i)
393	for (int j = 0; j < 3; ++j)	790	for (int j = 0; j < 3; ++j)
394	xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);	791	xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
395		792
396	XRenderSetPictureFilter (dpy, src, "good", 0, 0);	793	XRenderSetPictureFilter (cc.dpy, cc.src, "good", 0, 0);
397	XRenderSetPictureTransform (dpy, src, &xfrm);	794	XRenderSetPictureTransform (cc.dpy, cc.src, &xfrm);
398	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);	795	XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
399		796
400	XRenderFreePicture (dpy, src);	797	return cc;
401	XRenderFreePicture (dpy, dst);	798	}
		799
		800	rxvt_img *
		801	rxvt_img::scale (int new_width, int new_height)
		802	{
		803	if (w == new_width && h == new_height)
		804	return clone ();
		805
		806	int old_repeat_mode = repeat;
		807	repeat = RepeatPad; // not right, but xrender can't properly scale it seems
		808
		809	rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h));
		810
		811	repeat = old_repeat_mode;
		812	img->repeat = repeat;
402		813
403	return img;	814	return img;
404	}	815	}
405		816
406	rxvt_img *	817	rxvt_img *
407	rxvt_img::scale (int new_width, int new_height)	818	rxvt_img::rotate (int cx, int cy, nv phi)
408	{	819	{
409	double matrix[9] = {	820	#if 0
410	w / (double)new_width, 0, 0,
411	0, h / (double)new_height, 0,
412	0, 0, 1
413	};
414
415	return transform (new_width, new_height, matrix);
416	}
417
418	rxvt_img *
419	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi, int repeat)
420	{
421	double s = sin (phi);
422	double c = cos (phi);
423
424	double matrix[9] = {
425	c, -s, -c * x + s * y + x,	821	{ c, -s, cx - c * cx + s * cy },
426	s, c, -s * x - c * y + y,	822	{ s, c, cy - s * cx - c * cy },
427	0, 0, 1	823	{ 0, 0, 1 }
428	};	824	#endif
429		825
430	return transform (new_width, new_height, matrix, repeat);	826	move (-cx, -cy);
431	}	827	rxvt_img *img = transform (mat3x3::rotate (phi));
432		828	move ( cx, cy);
433	rxvt_img *	829	img->move (cx, cy);
434	rxvt_img::convert_to (XRenderPictFormat *new_format)
435	{
436	rxvt_img *img = new rxvt_img (s, new_format, w, h);
437
438	Display *dpy = s->display->dpy;
439	Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);
440	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
441
442	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
443
444	XRenderFreePicture (dpy, src);
445	XRenderFreePicture (dpy, dst);
446		830
447	return img;	831	return img;
448	}	832	}
449		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	rxvt_img *img = new_empty ();
		874
		875	composer cc (img);
		876
		877	XFixed *xparams = rxvt_temp_buf<XFixed> (nparams);
		878
		879	for (int i = 0; i < nparams; ++i)
		880	xparams [i] = XDoubleToFixed (params [i]);
		881
		882	XRenderSetPictureFilter (cc.dpy, cc.src, name, xparams, nparams);
		883
		884	XRenderComposite (cc.dpy, PictOpSrc, cc.src, 0, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
		885
		886	return cc;
		887	}
		888
450	#endif	889	#endif
451		890

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Comparing rxvt-unicode/src/rxvtimg.C (file contents): Revision 1.22 by sf-exg, Tue Jun 5 15:18:23 2012 UTC vs. Revision 1.98 by root, Sun Jun 17 21:58:18 2012 UTC

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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.22 by sf-exg, Tue Jun 5 15:18:23 2012 UTC vs.
Revision 1.98 by root, Sun Jun 17 21:58:18 2012 UTC