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

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.7 by sf-exg, Sun Jun 3 20:34:25 2012 UTC vs.
Revision 1.94 by root, Fri Jun 15 18:10:40 2012 UTC

…		…
		1	#include <string.h>
1	#include <math.h>	2	#include <math.h>
2	#include "../config.h"	3	#include "../config.h"
3	#include "rxvt.h"	4	#include "rxvt.h"
4		5
5	#if HAVE_IMG	6	#if HAVE_IMG
6		7
7	#define float_to_component(d) ((d) * 65535.99)	8	typedef rxvt_img::nv nv;
8		9
		10	namespace
		11	{
		12
		13	struct mat3x3
		14	{
		15	nv v[3][3];
		16
		17	mat3x3 ()
		18	{
		19	}
		20
		21	mat3x3 (nv matrix[3][3])
		22	{
		23	memcpy (v, matrix, sizeof (v));
		24	}
		25
		26	mat3x3 (nv v11, nv v12, nv v13, nv v21, nv v22, nv v23, nv v31, nv v32, nv v33)
		27	{
		28	v[0][0] = v11; v[0][1] = v12; v[0][2] = v13;
		29	v[1][0] = v21; v[1][1] = v22; v[1][2] = v23;
		30	v[2][0] = v31; v[2][1] = v32; v[2][2] = v33;
		31	}
		32
		33	mat3x3 invert ();
		34
		35	nv *operator [](int i) { return &v[i][0]; }
		36	const nv *operator [](int i) const { return &v[i][0]; }
		37
		38	// quite inefficient, hopefully gcc pulls the w calc out of any loops
		39	nv apply1 (int i, nv x, nv y)
		40	{
		41	mat3x3 &m = *this;
		42
		43	nv v = m[i][0] * x + m[i][1] * y + m[i][2];
		44	nv w = m[2][0] * x + m[2][1] * y + m[2][2];
		45
		46	return v * (1. / w);
		47	}
		48
		49	static mat3x3 translate (nv x, nv y);
		50	};
		51
		52	mat3x3
		53	mat3x3::invert ()
		54	{
		55	mat3x3 &m = *this;
		56	mat3x3 inv;
		57
		58	nv s0 = m[2][2] * m[1][1] - m[2][1] * m[1][2];
		59	nv s1 = m[2][1] * m[0][2] - m[2][2] * m[0][1];
		60	nv s2 = m[1][2] * m[0][1] - m[1][1] * m[0][2];
		61
		62	nv invdet = 1. / (m[0][0] * s0 + m[1][0] * s1 + m[2][0] * s2);
		63
		64	inv[0][0] = invdet * s0;
		65	inv[0][1] = invdet * s1;
		66	inv[0][2] = invdet * s2;
		67
		68	inv[1][0] = invdet * (m[2][0] * m[1][2] - m[2][2] * m[1][0]);
		69	inv[1][1] = invdet * (m[2][2] * m[0][0] - m[2][0] * m[0][2]);
		70	inv[1][2] = invdet * (m[1][0] * m[0][2] - m[1][2] * m[0][0]);
		71
		72	inv[2][0] = invdet * (m[2][1] * m[1][0] - m[2][0] * m[1][1]);
		73	inv[2][1] = invdet * (m[2][0] * m[0][1] - m[2][1] * m[0][0]);
		74	inv[2][2] = invdet * (m[1][1] * m[0][0] - m[1][0] * m[0][1]);
		75
		76	return inv;
		77	}
		78
		79	static mat3x3
		80	operator *(const mat3x3 &a, const mat3x3 &b)
		81	{
		82	mat3x3 r;
		83
		84	for (int i = 0; i < 3; ++i)
		85	for (int j = 0; j < 3; ++j)
		86	r[i][j] = a[i][0] * b[0][j]
		87	+ a[i][1] * b[1][j]
		88	+ a[i][2] * b[2][j];
		89
		90	return r;
		91	}
		92
		93	mat3x3
		94	mat3x3::translate (nv x, nv y)
		95	{
		96	return mat3x3 (
		97	1, 0, x,
		98	0, 1, y,
		99	0, 0, 1
		100	);
		101	}
		102
		103	}
		104
		105	#if 0
		106	struct pict
		107	{
		108	Display *dpy;
		109	Picture pic;
		110
		111	operator Picture () const
		112	{
		113	return pic;
		114	}
		115
		116	pict ()
		117	: pic (0)
		118	{
		119	}
		120
		121	pict (rxvt_img img, XRenderPictFormat format = 0)
		122	: dpy (img->s->display->dpy)
		123	{
		124	XRenderPictureAttributes pa;
		125	pa.repeat = img->repeat;
		126	pic = XRenderCreatePicture (dpy, img->pm, format ? format : img->format, CPRepeat, &pa);
		127	}
		128
		129	~pict ()
		130	{
		131	if (pic)
		132	XRenderFreePicture (dpy, pic);
		133	}
		134	};
		135	#endif
		136
		137	static XRenderPictFormat *
		138	find_alpha_format_for (Display dpy, XRenderPictFormat format)
		139	{
		140	if (format->direct.alphaMask)
		141	return format; // already has alpha
		142
		143	// try to find a suitable alpha format, one bit alpha is enough for our purposes
		144	if (format->type == PictTypeDirect)
		145	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
		146	if (f->direct.alphaMask
		147	&& f->type == PictTypeDirect
		148	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
		149	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
		150	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
		151	return f;
		152
		153	// should be a very good fallback
		154	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
		155	}
		156
9	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height)	157	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)	158	: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
		159	pm(0), ref(0)
17	{	160	{
18	}	161	}
19		162
20	rxvt_img *	163	rxvt_img::rxvt_img (const rxvt_img &img)
21	rxvt_img::new_from_file (rxvt_screen s, const char filename)	164	: 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)
22	{	165	{
23	GError *err;	166	++ref->cnt;
24	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);	167	}
25		168
26	if (!pb)	169	rxvt_img *
		170	rxvt_img::new_from_root (rxvt_screen *s)
		171	{
		172	Display *dpy = s->display->dpy;
		173	unsigned int root_pm_w, root_pm_h;
		174	Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]);
		175	if (root_pixmap == None)
		176	root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]);
		177
		178	if (root_pixmap == None)
		179	return 0;
		180
		181	Window wdummy;
		182	int idummy;
		183	unsigned int udummy;
		184
		185	if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy))
27	return 0;	186	return 0;
28		187
29	rxvt_img *img = new rxvt_img (	188	rxvt_img *img = new rxvt_img (
30	s,	189	s,
31	XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),	190	XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
32	gdk_pixbuf_get_width (pb),	191	0,
33	gdk_pixbuf_get_height (pb)	192	0,
		193	root_pm_w,
		194	root_pm_h
34	);	195	);
35		196
36	img->render (pb, 0, 0, img->w, img->h, 0, 0);	197	img->pm = root_pixmap;
		198	img->ref = new pixref (root_pm_w, root_pm_h);
		199	img->ref->ours = false;
37		200
		201	return img;
		202	}
		203
		204	# if HAVE_PIXBUF
		205
		206	rxvt_img *
		207	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)
		208	{
		209	Display *dpy = s->display->dpy;
		210
		211	int width = gdk_pixbuf_get_width (pb);
		212	int height = gdk_pixbuf_get_height (pb);
		213
		214	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks
		215	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
		216
		217	// since we require rgb24/argb32 formats from xrender we assume
		218	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender
		219
		220	int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
		221
		222	XImage xi;
		223
		224	xi.width = width;
		225	xi.height = height;
		226	xi.xoffset = 0;
		227	xi.format = ZPixmap;
		228	xi.byte_order = ImageByteOrder (dpy);
		229	xi.bitmap_unit = 0; //XY only, unused
		230	xi.bitmap_bit_order = 0; //XY only, unused
		231	xi.bitmap_pad = BitmapPad (dpy);
		232	xi.depth = 32;
		233	xi.bytes_per_line = 0;
		234	xi.bits_per_pixel = 32; //Z only
		235	xi.red_mask = 0x00000000; //Z only, unused
		236	xi.green_mask = 0x00000000; //Z only, unused
		237	xi.blue_mask = 0x00000000; //Z only, unused
		238	xi.obdata = 0; // probably unused
		239
		240	bool byte_order_mismatch = byte_order != xi.byte_order;
		241
		242	if (!XInitImage (&xi))
		243	rxvt_fatal ("unable to initialise ximage, please report.\n");
		244
		245	if (height > INT_MAX / xi.bytes_per_line)
		246	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
		247
		248	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);
		249
		250	int rowstride = gdk_pixbuf_get_rowstride (pb);
		251	bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb);
		252	unsigned char *row = gdk_pixbuf_get_pixels (pb);
		253
		254	char *line = xi.data;
		255
		256	for (int y = 0; y < height; y++)
		257	{
		258	unsigned char *src = row;
		259	uint32_t dst = (uint32_t )line;
		260
		261	if (!pb_has_alpha)
		262	for (int x = 0; x < width; x++)
		263	{
		264	uint8_t r = *src++;
		265	uint8_t g = *src++;
		266	uint8_t b = *src++;
		267
		268	uint32_t v = (255 << 24) \| (r << 16) \| (g << 8) \| b;
		269
		270	if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
		271	v = ecb_bswap32 (v);
		272
		273	*dst++ = v;
		274	}
		275	else
		276	for (int x = 0; x < width; x++)
		277	{
		278	uint32_t v = (uint32_t )src; src += 4;
		279
		280	if (ecb_big_endian ())
		281	v = ecb_bswap32 (v);
		282
		283	v = ecb_rotl32 (v, 8); // abgr to bgra
		284
		285	if (!byte_order_mismatch)
		286	v = ecb_bswap32 (v);
		287
		288	*dst++ = v;
		289	}
		290
		291	row += rowstride;
		292	line += xi.bytes_per_line;
		293	}
		294
		295	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
		296	img->alloc ();
		297
		298	GC gc = XCreateGC (dpy, img->pm, 0, 0);
		299	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
		300	XFreeGC (dpy, gc);
		301
		302	free (xi.data);
		303
		304	return img;
		305	}
		306
		307	rxvt_img *
		308	rxvt_img::new_from_file (rxvt_screen s, const char filename)
		309	{
		310	GError *err = 0;
		311	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
		312
		313	if (!pb)
		314	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
		315
		316	rxvt_img *img = new_from_pixbuf (s, pb);
		317
		318	g_object_unref (pb);
		319
		320	return img;
		321	}
		322
		323	# endif
		324
		325	void
		326	rxvt_img::destroy ()
		327	{
		328	if (--ref->cnt)
38	return img;	329	return;
		330
		331	if (pm && ref->ours)
		332	XFreePixmap (s->display->dpy, pm);
		333
		334	delete ref;
39	}	335	}
40		336
41	rxvt_img::~rxvt_img ()	337	rxvt_img::~rxvt_img ()
42	{	338	{
43	if (!shared)	339	destroy ();
44	XFreePixmap (s->display->dpy, pm);
45	}	340	}
46		341
47	void	342	void
48	rxvt_img::fill (const rxvt_color &c)	343	rxvt_img::alloc ()
49	{	344	{
50	XGCValues gcv;	345	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
51	gcv.foreground = c;	346	ref = new pixref (w, h);
		347	}
		348
		349	Picture
		350	rxvt_img::picture ()
		351	{
		352	Display *dpy = s->display->dpy;
		353
		354	XRenderPictureAttributes pa;
		355	pa.repeat = repeat;
		356	Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
		357
		358	return pic;
		359	}
		360
		361	void
		362	rxvt_img::unshare ()
		363	{
		364	if (ref->cnt == 1 && ref->ours)
		365	return;
		366
		367	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
52	GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);	368	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
53	XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);	369	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
54	XFreeGC (s->display->dpy, gc);	370	XFreeGC (s->display->dpy, gc);
		371
		372	destroy ();
		373
		374	pm = pm2;
		375	ref = new pixref (ref->w, ref->h);
		376	}
		377
		378	void
		379	rxvt_img::fill (const rgba &c)
		380	{
		381	XRenderColor rc = { c.r, c.g, c.b, c.a };
		382
		383	Display *dpy = s->display->dpy;
		384	Picture src = picture ();
		385	XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h);
		386	XRenderFreePicture (dpy, src);
		387	}
		388
		389	void
		390	rxvt_img::add_alpha ()
		391	{
		392	if (format->direct.alphaMask)
		393	return;
		394
		395	Display *dpy = s->display->dpy;
		396
		397	rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat);
		398	img->alloc ();
		399
		400	Picture src = picture ();
		401	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
		402
		403	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
		404
		405	XRenderFreePicture (dpy, src);
		406	XRenderFreePicture (dpy, dst);
		407
		408	::swap (img->ref, ref);
		409	::swap (img->pm , pm );
		410
		411	delete img;
55	}	412	}
56		413
57	static void	414	static void
58	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)	415	get_gaussian_kernel (int radius, int width, nv kernel, XFixed params)
59	{	416	{
60	double sigma = radius / 2.0;	417	nv sigma = radius / 2.0;
61	double scale = sqrt (2.0 * M_PI) * sigma;	418	nv scale = sqrt (2.0 * M_PI) * sigma;
62	double sum = 0.0;	419	nv sum = 0.0;
63		420
64	for (int i = 0; i < width; i++)	421	for (int i = 0; i < width; i++)
65	{	422	{
66	double x = i - width / 2;	423	nv x = i - width / 2;
67	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;	424	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
68	sum += kernel[i];	425	sum += kernel[i];
69	}	426	}
70		427
71	params[0] = XDoubleToFixed (width);	428	params[0] = XDoubleToFixed (width);
73		430
74	for (int i = 0; i < width; i++)	431	for (int i = 0; i < width; i++)
75	params[i+2] = XDoubleToFixed (kernel[i] / sum);	432	params[i+2] = XDoubleToFixed (kernel[i] / sum);
76	}	433	}
77		434
78	void	435	rxvt_img *
79	rxvt_img::blur (int rh, int rv)	436	rxvt_img::blur (int rh, int rv)
80	{	437	{
81	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))	438	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
82	return;	439	return clone ();
83		440
84	Display *dpy = s->display->dpy;	441	Display *dpy = s->display->dpy;
85	int size = max (rh, rv) * 2 + 1;	442	int size = max (rh, rv) * 2 + 1;
86	double kernel = (double )malloc (size * sizeof (double));	443	nv kernel = (nv )malloc (size * sizeof (nv));
87	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));	444	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
		445	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
		446	img->alloc ();
88		447
89	XRenderPictureAttributes pa;	448	XRenderPictureAttributes pa;
90
91	pa.repeat = RepeatPad;	449	pa.repeat = RepeatPad;
92	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);	450	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
		451	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
		452
93	Pixmap tmp = XCreatePixmap (dpy, pm, w, h, format->depth);	453	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
94	Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa);	454	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
95	XFreePixmap (dpy, tmp);	455	XFreePixmap (dpy, tmp_pm);
96		456
97	if (kernel && params)	457	if (kernel && params)
98	{	458	{
99	size = rh * 2 + 1;	459	size = rh * 2 + 1;
100	get_gaussian_kernel (rh, size, kernel, params);	460	get_gaussian_kernel (rh, size, kernel, params);
101		461
102	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);	462	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
103	XRenderComposite (dpy,	463	XRenderComposite (dpy,
104	PictOpSrc,	464	PictOpSrc,
105	src,	465	src,
		466	None,
		467	tmp,
		468	0, 0,
		469	0, 0,
		470	0, 0,
		471	w, h);
		472
		473	size = rv * 2 + 1;
		474	get_gaussian_kernel (rv, size, kernel, params);
		475	::swap (params[0], params[1]);
		476
		477	XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
		478	XRenderComposite (dpy,
		479	PictOpSrc,
		480	tmp,
106	None,	481	None,
107	dst,	482	dst,
108	0, 0,	483	0, 0,
109	0, 0,	484	0, 0,
110	0, 0,	485	0, 0,
111	w, h);	486	w, h);
112
113	::swap (src, dst);
114
115	size = rv * 2 + 1;
116	get_gaussian_kernel (rv, size, kernel, params);
117	::swap (params[0], params[1]);
118
119	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
120	XRenderComposite (dpy,
121	PictOpSrc,
122	src,
123	None,
124	dst,
125	0, 0,
126	0, 0,
127	0, 0,
128	w, h);
129	}	487	}
130		488
131	free (kernel);	489	free (kernel);
132	free (params);	490	free (params);
		491
133	XRenderFreePicture (dpy, src);	492	XRenderFreePicture (dpy, src);
134	XRenderFreePicture (dpy, dst);	493	XRenderFreePicture (dpy, dst);
		494	XRenderFreePicture (dpy, tmp);
		495
		496	return img;
135	}	497	}
136		498
137	static Picture	499	static Picture
138	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)	500	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha)
139	{	501	{
140	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);	502	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
141		503
142	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);	504	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
143	XRenderPictureAttributes pa;	505	XRenderPictureAttributes pa;
144	pa.repeat = True;	506	pa.repeat = RepeatNormal;
		507	pa.component_alpha = component_alpha;
145	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);	508	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat \| CPComponentAlpha, &pa);
146		509
147	XFreePixmap (dpy, pixmap);	510	XFreePixmap (dpy, pixmap);
148		511
149	return mask;	512	return mask;
150	}	513	}
151		514
		515	static void
		516	extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
		517	{
		518	int32_t x = clamp (c, cl0, cl1);
		519	c -= x;
		520	xc = x;
		521	}
		522
		523	static bool
		524	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)
		525	{
		526	extract (cl0, cl1, r, xr);
		527	extract (cl0, cl1, g, xg);
		528	extract (cl0, cl1, b, xb);
		529	extract (cl0, cl1, a, xa);
		530
		531	return xr \| xg \| xb \| xa;
		532	}
		533
152	void	534	void
153	rxvt_img::brightness (double r, double g, double b, double a)	535	rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
154	{	536	{
		537	unshare ();
		538
155	Display *dpy = s->display->dpy;	539	Display *dpy = s->display->dpy;
156	Picture src = create_xrender_mask (dpy, pm, True);
157	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	540	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
158		541
		542	// loop should not be needed for brightness, as only -1..1 makes sense
		543	//while (r \| g \| b \| a)
		544	{
		545	unsigned short xr, xg, xb, xa;
159	XRenderColor mask_c;	546	XRenderColor mask_c;
160	mask_c.red = float_to_component (r);	547
161	mask_c.green = float_to_component (g);	548	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
162	mask_c.blue = float_to_component (b);
163	mask_c.alpha = float_to_component (a);
164	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	549	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
165		550
166	XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	551	if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
		552	{
		553	XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
		554	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		555	mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
		556	mask_c.green = -mask_c.green;
		557	mask_c.blue = -mask_c.blue;
		558	mask_c.alpha = -mask_c.alpha;
		559	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
		560	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		561	}
		562	}
		563
		564	XRenderFreePicture (dpy, dst);
167	}	565	}
168		566
169	void	567	void
170	rxvt_img::contrast (double r, double g, double b, double a)	568	rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
171	{	569	{
172	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))	570	if (r < 0 \|\| g < 0 \|\| b < 0 \|\| a < 0)
173	return;	571	rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
174		572
		573	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
		574	img->alloc ();
		575	img->fill (rgba (0, 0, 0, 0));
		576
		577	// premultiply (yeah, these are not exact, sue me or fix it)
		578	r = (r * (a >> 8)) >> 8;
		579	g = (g * (a >> 8)) >> 8;
		580	b = (b * (a >> 8)) >> 8;
		581
175	Display *dpy = s->display->dpy;	582	Display *dpy = s->display->dpy;
176	Picture src = create_xrender_mask (dpy, pm, True);	583
		584	Picture src = picture ();
177	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	585	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
		586	Picture mul = create_xrender_mask (dpy, pm, True, True);
178		587
		588	//TODO: this operator does not yet implement some useful contrast
		589	while (r \| g \| b \| a)
		590	{
		591	unsigned short xr, xg, xb, xa;
179	XRenderColor mask_c;	592	XRenderColor mask_c;
180	mask_c.red = float_to_component (r);	593
181	mask_c.green = float_to_component (g);	594	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
182	mask_c.blue = float_to_component (b);	595	{
183	mask_c.alpha = float_to_component (a);
184	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	596	XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1);
185
186	XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	597	XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h);
		598	}
		599	}
		600
		601	XRenderFreePicture (dpy, mul);
		602	XRenderFreePicture (dpy, dst);
		603	XRenderFreePicture (dpy, src);
		604
		605	::swap (img->ref, ref);
		606	::swap (img->pm , pm );
		607
		608	delete img;
187	}	609	}
188		610
189	void	611	void
190	rxvt_img::render (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)	612	rxvt_img::draw (rxvt_img *img, int op, nv mask)
191	{	613	{
192	//TODO	614	unshare ();
193	}
194		615
195	rxvt_img *
196	rxvt_img::copy ()
197	{
198	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
199	Pixmap pm2 = XCreatePixmap (s->display->dpy, pm, w, h, format->depth);
200	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0);
201	XFreeGC (s->display->dpy, gc);
202	return new rxvt_img (s, format, w, h, pm2);
203	}
204
205	rxvt_img *
206	rxvt_img::transform (int new_width, int new_height, double matrix[16])
207	{
208	//TODO
209	}
210
211	rxvt_img *
212	rxvt_img::scale (int new_width, int new_height)
213	{
214	// use transform
215	//TODO
216	}
217
218	rxvt_img *
219	rxvt_img::convert_to (XRenderPictFormat *new_format)
220	{
221	Display *dpy = s->display->dpy;	616	Display *dpy = s->display->dpy;
222	Pixmap new_pm = XCreatePixmap (dpy, pm, w, h, new_format->depth);	617	Picture src = img->picture ();
223	Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);	618	Picture dst = picture ();
224	Picture dst = XRenderCreatePicture (dpy, new_pm, new_format, 0, 0);	619	Picture mask_p = 0;
		620
		621	if (mask != 1.)
		622	{
		623	mask_p = create_xrender_mask (dpy, img->pm, False, False);
		624	XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) };
		625	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
		626	}
225		627
226	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	628	XRenderComposite (dpy, op, src, mask_p, dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h);
227		629
228	XRenderFreePicture (dpy, src);	630	XRenderFreePicture (dpy, src);
229	XRenderFreePicture (dpy, dst);	631	XRenderFreePicture (dpy, dst);
230		632
231	rxvt_img *img = new rxvt_img (	633	if (mask_p)
232	s,	634	XRenderFreePicture (dpy, mask_p);
233	new_format,	635	}
234	w,	636
235	h,	637	rxvt_img *
236	new_pm	638	rxvt_img::clone ()
		639	{
		640	return new rxvt_img (*this);
		641	}
		642
		643	rxvt_img *
		644	rxvt_img::reify ()
		645	{
		646	if (x == 0 && y == 0 && w == ref->w && h == ref->h)
		647	return clone ();
		648
		649	Display *dpy = s->display->dpy;
		650
		651	// add an alpha channel if...
		652	bool alpha = !format->direct.alphaMask // pixmap has none yet
		653	&& (x \|\| y) // we need one because of non-zero offset
		654	&& repeat == RepeatNone; // and we have no good pixels to fill with
		655
		656	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
		657	img->alloc ();
		658
		659	Picture src = picture ();
		660	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
		661
		662	if (alpha)
		663	{
		664	XRenderColor rc = { 0, 0, 0, 0 };
		665	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
		666	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
		667	}
		668	else
		669	XRenderComposite (dpy, PictOpSrc, src, None, dst, -x, -y, 0, 0, 0, 0, w, h);
		670
		671	XRenderFreePicture (dpy, src);
		672	XRenderFreePicture (dpy, dst);
		673
		674	return img;
		675	}
		676
		677	rxvt_img *
		678	rxvt_img::sub_rect (int x, int y, int width, int height)
		679	{
		680	rxvt_img *img = clone ();
		681
		682	img->x -= x;
		683	img->y -= y;
		684
		685	if (w != width \|\| h != height)
		686	{
		687	img->w = width;
		688	img->h = height;
		689
		690	rxvt_img *img2 = img->reify ();
		691	delete img;
		692	img = img2;
		693	}
		694
		695	return img;
		696	}
		697
		698	rxvt_img *
		699	rxvt_img::transform (nv matrix[3][3])
		700	{
		701	// calculate new pixel bounding box coordinates
		702	nv r[2], rmin[2], rmax[2];
		703
		704	mat3x3 m (matrix);
		705
		706	for (int i = 0; i < 2; ++i)
		707	{
		708	nv v;
		709
		710	v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v; r [i] = v;
		711	v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
		712	v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		713	v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		714	}
		715
		716	float sx = rmin [0] - x;
		717	float sy = rmin [1] - y;
		718
		719	// TODO: adjust matrix for subpixel accuracy
		720	int nx = floor (rmin [0]);
		721	int ny = floor (rmin [1]);
		722
		723	int new_width = ceil (rmax [0] - rmin [0]);
		724	int new_height = ceil (rmax [1] - rmin [1]);
		725
		726	m = mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y);
		727
		728	mat3x3 inv = m.invert ();
		729
		730	rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat);
		731	img->alloc ();
		732
		733	Display *dpy = s->display->dpy;
		734	Picture src = picture ();
		735	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
		736
		737	XTransform xfrm;
		738
		739	for (int i = 0; i < 3; ++i)
		740	for (int j = 0; j < 3; ++j)
		741	xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
		742
		743	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
		744	XRenderSetPictureTransform (dpy, src, &xfrm);
		745	XRenderComposite (dpy, PictOpSrc, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
		746
		747	XRenderFreePicture (dpy, src);
		748	XRenderFreePicture (dpy, dst);
		749
		750	return img;
		751	}
		752
		753	rxvt_img *
		754	rxvt_img::scale (int new_width, int new_height)
		755	{
		756	if (w == new_width && h == new_height)
		757	return clone ();
		758
		759	nv matrix[3][3] = {
		760	{ new_width / (nv)w, 0, 0 },
		761	{ 0, new_height / (nv)h, 0 },
		762	{ 0, 0, 1 }
237	);	763	};
238		764
239	return img;	765	int old_repeat_mode = repeat;
240	}	766	repeat = RepeatPad; // not right, but xrender can't properly scale it seems
241		767
		768	rxvt_img *img = transform (matrix);
		769
		770	repeat = old_repeat_mode;
		771	img->repeat = repeat;
		772
		773	return img;
		774	}
		775
		776	rxvt_img *
		777	rxvt_img::rotate (int cx, int cy, nv phi)
		778	{
		779	nv s = sin (phi);
		780	nv c = cos (phi);
		781
		782	nv matrix[3][3] = {
		783	#if 0
		784	{ c, -s, cx - c * cx + s * cy },
		785	{ s, c, cy - s * cx - c * cy },
		786	{ 0, 0, 1 }
		787	#else
		788	{ c, -s, 0 },
		789	{ s, c, 0 },
		790	{ 0, 0, 1 }
242	#endif	791	#endif
		792	};
243		793
		794	move (-cx, -cy);
		795	rxvt_img *img = transform (matrix);
		796	move ( cx, cy);
		797	img->move (cx, cy);
		798
		799	return img;
		800	}
		801
		802	rxvt_img *
		803	rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
		804	{
		805	if (new_format == format)
		806	return clone ();
		807
		808	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
		809	img->alloc ();
		810
		811	Display *dpy = s->display->dpy;
		812	Picture src = picture ();
		813	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
		814	int op = PictOpSrc;
		815
		816	if (format->direct.alphaMask && !new_format->direct.alphaMask)
		817	{
		818	// does it have to be that complicated
		819	XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
		820	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
		821
		822	op = PictOpOver;
		823	}
		824
		825	XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
		826
		827	XRenderFreePicture (dpy, src);
		828	XRenderFreePicture (dpy, dst);
		829
		830	return img;
		831	}
		832
		833	rxvt_img *
		834	rxvt_img::blend (rxvt_img *img, nv factor)
		835	{
		836	rxvt_img *img2 = clone ();
		837	Display *dpy = s->display->dpy;
		838	Picture src = img->picture ();
		839	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
		840	Picture mask = create_xrender_mask (dpy, img->pm, False, False);
		841
		842	XRenderColor mask_c;
		843
		844	mask_c.alpha = float_to_component (factor);
		845	mask_c.red =
		846	mask_c.green =
		847	mask_c.blue = 0;
		848	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
		849
		850	XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);
		851
		852	XRenderFreePicture (dpy, src);
		853	XRenderFreePicture (dpy, dst);
		854	XRenderFreePicture (dpy, mask);
		855
		856	return img2;
		857	}
		858
		859	#endif
		860

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Comparing rxvt-unicode/src/rxvtimg.C (file contents): Revision 1.7 by sf-exg, Sun Jun 3 20:34:25 2012 UTC vs. Revision 1.94 by root, Fri Jun 15 18:10:40 2012 UTC

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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.7 by sf-exg, Sun Jun 3 20:34:25 2012 UTC vs.
Revision 1.94 by root, Fri Jun 15 18:10:40 2012 UTC