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

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.30 by root, Wed Jun 6 22:01:44 2012 UTC vs.
Revision 1.92 by root, Fri Jun 15 18:05:15 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	struct mat3x3
		11	{
		12	nv v[3][3];
		13
		14	mat3x3 ()
		15	{
		16	}
		17
		18	mat3x3 (nv matrix[3][3])
		19	{
		20	memcpy (v, matrix, sizeof (v));
		21	}
		22
		23	mat3x3 (nv v11, nv v12, nv v13, nv v21, nv v22, nv v23, nv v31, nv v32, nv v33)
		24	{
		25	v[0][0] = v11; v[0][1] = v12; v[0][2] = v13;
		26	v[1][0] = v21; v[1][1] = v22; v[1][2] = v23;
		27	v[2][0] = v31; v[2][1] = v32; v[2][2] = v33;
		28	}
		29
		30	mat3x3 invert ();
		31
		32	nv *operator [](int i) { return &v[i][0]; }
		33	const nv *operator [](int i) const { return &v[i][0]; }
		34
		35	// quite inefficient, hopefully gcc pulls the w calc out of any loops
		36	nv apply1 (int i, nv x, nv y)
		37	{
		38	mat3x3 &m = *this;
		39
		40	nv v = m[i][0] * x + m[i][1] * y + m[i][2];
		41	nv w = m[2][0] * x + m[2][1] * y + m[2][2];
		42
		43	return v * (1. / w);
		44	}
		45
		46	static mat3x3 translate (nv x, nv y);
		47	};
		48
		49	mat3x3
		50	mat3x3::invert ()
		51	{
		52	mat3x3 &m = *this;
		53	mat3x3 inv;
		54
		55	nv s0 = m[2][2] * m[1][1] - m[2][1] * m[1][2];
		56	nv s1 = m[2][1] * m[0][2] - m[2][2] * m[0][1];
		57	nv s2 = m[1][2] * m[0][1] - m[1][1] * m[0][2];
		58
		59	nv invdet = 1. / (m[0][0] * s0 + m[1][0] * s1 + m[2][0] * s2);
		60
		61	inv[0][0] = invdet * s0;
		62	inv[0][1] = invdet * s1;
		63	inv[0][2] = invdet * s2;
		64
		65	inv[1][0] = invdet * (m[2][0] * m[1][2] - m[2][2] * m[1][0]);
		66	inv[1][1] = invdet * (m[2][2] * m[0][0] - m[2][0] * m[0][2]);
		67	inv[1][2] = invdet * (m[1][0] * m[0][2] - m[1][2] * m[0][0]);
		68
		69	inv[2][0] = invdet * (m[2][1] * m[1][0] - m[2][0] * m[1][1]);
		70	inv[2][1] = invdet * (m[2][0] * m[0][1] - m[2][1] * m[0][0]);
		71	inv[2][2] = invdet * (m[1][1] * m[0][0] - m[1][0] * m[0][1]);
		72
		73	return inv;
		74	}
		75
		76	static mat3x3
		77	operator *(const mat3x3 &a, const mat3x3 &b)
		78	{
		79	mat3x3 r;
		80
		81	for (int i = 0; i < 3; ++i)
		82	for (int j = 0; j < 3; ++j)
		83	r[i][j] = a[i][0] * b[0][j]
		84	+ a[i][1] * b[1][j]
		85	+ a[i][2] * b[2][j];
		86
		87	return r;
		88	}
		89
		90	mat3x3
		91	mat3x3::translate (nv x, nv y)
		92	{
		93	return mat3x3 (
		94	1, 0, x,
		95	0, 1, y,
		96	0, 0, 1
		97	);
		98	}
		99
		100	#if 0
		101	struct pict
		102	{
		103	Display *dpy;
		104	Picture pic;
		105
		106	operator Picture () const
		107	{
		108	return pic;
		109	}
		110
		111	pict ()
		112	: pic (0)
		113	{
		114	}
		115
		116	pict (rxvt_img img, XRenderPictFormat format = 0)
		117	: dpy (img->s->display->dpy)
		118	{
		119	XRenderPictureAttributes pa;
		120	pa.repeat = img->repeat;
		121	pic = XRenderCreatePicture (dpy, img->pm, format ? format : img->format, CPRepeat, &pa);
		122	}
		123
		124	~pict ()
		125	{
		126	if (pic)
		127	XRenderFreePicture (dpy, pic);
		128	}
		129	};
		130	#endif
		131
		132	static XRenderPictFormat *
		133	find_alpha_format_for (Display dpy, XRenderPictFormat format)
		134	{
		135	if (format->direct.alphaMask)
		136	return format; // already has alpha
		137
		138	// try to find a suitable alpha format, one bit alpha is enough for our purposes
		139	if (format->type == PictTypeDirect)
		140	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
		141	if (f->direct.alphaMask
		142	&& f->type == PictTypeDirect
		143	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
		144	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
		145	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
		146	return f;
		147
		148	// should be a very good fallback
		149	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
		150	}
		151
9	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height)	152	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int x, int y, int width, int height, int repeat)
10	: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false)	153	: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
		154	pm(0), ref(0)
11	{	155	{
12	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
13	}	156	}
14		157
15	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height, Pixmap pixmap)	158	rxvt_img::rxvt_img (const rxvt_img &img)
16	: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap)	159	: 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)
17	{	160	{
		161	++ref->cnt;
18	}	162	}
19		163
20	rxvt_img *	164	rxvt_img *
21	rxvt_img::new_from_root (rxvt_screen *s)	165	rxvt_img::new_from_root (rxvt_screen *s)
22	{	166	{
37	return 0;	181	return 0;
38		182
39	rxvt_img *img = new rxvt_img (	183	rxvt_img *img = new rxvt_img (
40	s,	184	s,
41	XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),	185	XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
		186	0,
		187	0,
42	root_pm_w,	188	root_pm_w,
43	root_pm_h,	189	root_pm_h
44	root_pixmap
45	);	190	);
46		191
47	img->shared = true;	192	img->pm = root_pixmap;
		193	img->ref = new pixref (root_pm_w, root_pm_h);
		194	img->ref->ours = false;
		195
		196	return img;
		197	}
		198
		199	# if HAVE_PIXBUF
		200
		201	rxvt_img *
		202	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)
		203	{
		204	Display *dpy = s->display->dpy;
		205
		206	int width = gdk_pixbuf_get_width (pb);
		207	int height = gdk_pixbuf_get_height (pb);
		208
		209	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks
		210	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
		211
		212	// since we require rgb24/argb32 formats from xrender we assume
		213	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender
		214
		215	int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
		216
		217	XImage xi;
		218
		219	xi.width = width;
		220	xi.height = height;
		221	xi.xoffset = 0;
		222	xi.format = ZPixmap;
		223	xi.byte_order = ImageByteOrder (dpy);
		224	xi.bitmap_unit = 0; //XY only, unused
		225	xi.bitmap_bit_order = 0; //XY only, unused
		226	xi.bitmap_pad = BitmapPad (dpy);
		227	xi.depth = 32;
		228	xi.bytes_per_line = 0;
		229	xi.bits_per_pixel = 32; //Z only
		230	xi.red_mask = 0x00000000; //Z only, unused
		231	xi.green_mask = 0x00000000; //Z only, unused
		232	xi.blue_mask = 0x00000000; //Z only, unused
		233	xi.obdata = 0; // probably unused
		234
		235	bool byte_order_mismatch = byte_order != xi.byte_order;
		236
		237	if (!XInitImage (&xi))
		238	rxvt_fatal ("unable to initialise ximage, please report.\n");
		239
		240	if (height > INT_MAX / xi.bytes_per_line)
		241	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
		242
		243	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);
		244
		245	int rowstride = gdk_pixbuf_get_rowstride (pb);
		246	bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb);
		247	unsigned char *row = gdk_pixbuf_get_pixels (pb);
		248
		249	char *line = xi.data;
		250
		251	for (int y = 0; y < height; y++)
		252	{
		253	unsigned char *src = row;
		254	uint32_t dst = (uint32_t )line;
		255
		256	if (!pb_has_alpha)
		257	for (int x = 0; x < width; x++)
		258	{
		259	uint8_t r = *src++;
		260	uint8_t g = *src++;
		261	uint8_t b = *src++;
		262
		263	uint32_t v = (255 << 24) \| (r << 16) \| (g << 8) \| b;
		264
		265	if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
		266	v = ecb_bswap32 (v);
		267
		268	*dst++ = v;
		269	}
		270	else
		271	for (int x = 0; x < width; x++)
		272	{
		273	uint32_t v = (uint32_t )src; src += 4;
		274
		275	if (ecb_big_endian ())
		276	v = ecb_bswap32 (v);
		277
		278	v = ecb_rotl32 (v, 8); // abgr to bgra
		279
		280	if (!byte_order_mismatch)
		281	v = ecb_bswap32 (v);
		282
		283	*dst++ = v;
		284	}
		285
		286	row += rowstride;
		287	line += xi.bytes_per_line;
		288	}
		289
		290	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
		291	img->alloc ();
		292
		293	GC gc = XCreateGC (dpy, img->pm, 0, 0);
		294	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
		295	XFreeGC (dpy, gc);
		296
		297	free (xi.data);
48		298
49	return img;	299	return img;
50	}	300	}
51		301
52	rxvt_img *	302	rxvt_img *
…		…
56	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);	306	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
57		307
58	if (!pb)	308	if (!pb)
59	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);	309	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
60		310
61	rxvt_img *img = new rxvt_img (	311	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
68	img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);
69		312
70	g_object_unref (pb);	313	g_object_unref (pb);
71		314
72	return img;	315	return img;
73	}	316	}
74		317
		318	# endif
		319
		320	void
		321	rxvt_img::destroy ()
		322	{
		323	if (--ref->cnt)
		324	return;
		325
		326	if (pm && ref->ours)
		327	XFreePixmap (s->display->dpy, pm);
		328
		329	delete ref;
		330	}
		331
75	rxvt_img::~rxvt_img ()	332	rxvt_img::~rxvt_img ()
76	{	333	{
77	if (!shared)	334	destroy ();
78	XFreePixmap (s->display->dpy, pm);	335	}
		336
		337	void
		338	rxvt_img::alloc ()
		339	{
		340	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
		341	ref = new pixref (w, h);
		342	}
		343
		344	Picture
		345	rxvt_img::picture ()
		346	{
		347	Display *dpy = s->display->dpy;
		348
		349	XRenderPictureAttributes pa;
		350	pa.repeat = repeat;
		351	Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
		352
		353	return pic;
79	}	354	}
80		355
81	void	356	void
82	rxvt_img::unshare ()	357	rxvt_img::unshare ()
83	{	358	{
84	if (!shared)	359	if (ref->cnt == 1 && ref->ours)
85	return;	360	return;
86		361
87	rxvt_img *img = clone ();	362	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
		363	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
		364	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
		365	XFreeGC (s->display->dpy, gc);
88		366
89	::swap (pm , img->pm);	367	destroy ();
90	::swap (shared, img->shared);	368
		369	pm = pm2;
		370	ref = new pixref (ref->w, ref->h);
		371	}
		372
		373	void
		374	rxvt_img::fill (const rgba &c)
		375	{
		376	XRenderColor rc = { c.r, c.g, c.b, c.a };
		377
		378	Display *dpy = s->display->dpy;
		379	Picture src = picture ();
		380	XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h);
		381	XRenderFreePicture (dpy, src);
		382	}
		383
		384	void
		385	rxvt_img::add_alpha ()
		386	{
		387	if (format->direct.alphaMask)
		388	return;
		389
		390	Display *dpy = s->display->dpy;
		391
		392	rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat);
		393	img->alloc ();
		394
		395	Picture src = picture ();
		396	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
		397
		398	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
		399
		400	XRenderFreePicture (dpy, src);
		401	XRenderFreePicture (dpy, dst);
		402
		403	::swap (img->ref, ref);
		404	::swap (img->pm , pm );
91		405
92	delete img;	406	delete img;
93	}	407	}
94		408
95	void
96	rxvt_img::fill (const rxvt_color &c)
97	{
98	XGCValues gcv;
99	gcv.foreground = c;
100	GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);
101	XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);
102	XFreeGC (s->display->dpy, gc);
103	}
104
105	static void	409	static void
106	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)	410	get_gaussian_kernel (int radius, int width, nv kernel, XFixed params)
107	{	411	{
108	double sigma = radius / 2.0;	412	nv sigma = radius / 2.0;
109	double scale = sqrt (2.0 * M_PI) * sigma;	413	nv scale = sqrt (2.0 * M_PI) * sigma;
110	double sum = 0.0;	414	nv sum = 0.0;
111		415
112	for (int i = 0; i < width; i++)	416	for (int i = 0; i < width; i++)
113	{	417	{
114	double x = i - width / 2;	418	nv x = i - width / 2;
115	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;	419	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
116	sum += kernel[i];	420	sum += kernel[i];
117	}	421	}
118		422
119	params[0] = XDoubleToFixed (width);	423	params[0] = XDoubleToFixed (width);
…		…
129	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))	433	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
130	return clone ();	434	return clone ();
131		435
132	Display *dpy = s->display->dpy;	436	Display *dpy = s->display->dpy;
133	int size = max (rh, rv) * 2 + 1;	437	int size = max (rh, rv) * 2 + 1;
134	double kernel = (double )malloc (size * sizeof (double));	438	nv kernel = (nv )malloc (size * sizeof (nv));
135	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));	439	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
136	rxvt_img *img = new rxvt_img (s, format, w, h);	440	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
		441	img->alloc ();
137		442
138	XRenderPictureAttributes pa;	443	XRenderPictureAttributes pa;
139
140	pa.repeat = RepeatPad;	444	pa.repeat = RepeatPad;
141	Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa);	445	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
142	Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);	446	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
143		447
144	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);	448	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
145	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);	449	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
146	XFreePixmap (dpy, tmp_pm);	450	XFreePixmap (dpy, tmp_pm);
147		451
…		…
163		467
164	size = rv * 2 + 1;	468	size = rv * 2 + 1;
165	get_gaussian_kernel (rv, size, kernel, params);	469	get_gaussian_kernel (rv, size, kernel, params);
166	::swap (params[0], params[1]);	470	::swap (params[0], params[1]);
167		471
168	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);	472	XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
169	XRenderComposite (dpy,	473	XRenderComposite (dpy,
170	PictOpSrc,	474	PictOpSrc,
171	tmp,	475	tmp,
172	None,	476	None,
173	dst,	477	dst,
…		…
177	w, h);	481	w, h);
178	}	482	}
179		483
180	free (kernel);	484	free (kernel);
181	free (params);	485	free (params);
		486
182	XRenderFreePicture (dpy, src);	487	XRenderFreePicture (dpy, src);
183	XRenderFreePicture (dpy, dst);	488	XRenderFreePicture (dpy, dst);
184	XRenderFreePicture (dpy, tmp);	489	XRenderFreePicture (dpy, tmp);
185		490
186	return img;	491	return img;
187	}	492	}
188		493
189	static Picture	494	static Picture
190	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)	495	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha)
191	{	496	{
192	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);	497	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
193		498
194	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);	499	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
195	XRenderPictureAttributes pa;	500	XRenderPictureAttributes pa;
196	pa.repeat = True;	501	pa.repeat = RepeatNormal;
		502	pa.component_alpha = component_alpha;
197	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);	503	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat \| CPComponentAlpha, &pa);
198		504
199	XFreePixmap (dpy, pixmap);	505	XFreePixmap (dpy, pixmap);
200		506
201	return mask;	507	return mask;
202	}	508	}
203		509
		510	static void
		511	extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
		512	{
		513	int32_t x = clamp (c, cl0, cl1);
		514	c -= x;
		515	xc = x;
		516	}
		517
		518	static bool
		519	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)
		520	{
		521	extract (cl0, cl1, r, xr);
		522	extract (cl0, cl1, g, xg);
		523	extract (cl0, cl1, b, xb);
		524	extract (cl0, cl1, a, xa);
		525
		526	return xr \| xg \| xb \| xa;
		527	}
		528
204	void	529	void
205	rxvt_img::brightness (double r, double g, double b, double a)	530	rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
206	{	531	{
		532	unshare ();
		533
207	Display *dpy = s->display->dpy;	534	Display *dpy = s->display->dpy;
208	Picture src = create_xrender_mask (dpy, pm, True);
209	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	535	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
210		536
		537	// loop should not be needed for brightness, as only -1..1 makes sense
		538	//while (r \| g \| b \| a)
		539	{
		540	unsigned short xr, xg, xb, xa;
211	XRenderColor mask_c;	541	XRenderColor mask_c;
212	mask_c.red = float_to_component (r);	542
213	mask_c.green = float_to_component (g);	543	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
214	mask_c.blue = float_to_component (b);	544	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
215	mask_c.alpha = float_to_component (a);	545
		546	if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
		547	{
		548	XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
		549	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		550	mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
		551	mask_c.green = -mask_c.green;
		552	mask_c.blue = -mask_c.blue;
		553	mask_c.alpha = -mask_c.alpha;
		554	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
		555	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		556	}
		557	}
		558
		559	XRenderFreePicture (dpy, dst);
		560	}
		561
		562	void
		563	rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
		564	{
		565	if (r < 0 \|\| g < 0 \|\| b < 0 \|\| a < 0)
		566	rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
		567
		568	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
		569	img->alloc ();
		570	img->fill (rgba (0, 0, 0, 0));
		571
		572	// premultiply (yeah, these are not exact, sue me or fix it)
		573	r = (r * (a >> 8)) >> 8;
		574	g = (g * (a >> 8)) >> 8;
		575	b = (b * (a >> 8)) >> 8;
		576
		577	Display *dpy = s->display->dpy;
		578
		579	Picture src = picture ();
		580	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
		581	Picture mul = create_xrender_mask (dpy, pm, True, True);
		582
		583	//TODO: this operator does not yet implement some useful contrast
		584	while (r \| g \| b \| a)
		585	{
		586	unsigned short xr, xg, xb, xa;
		587	XRenderColor mask_c;
		588
		589	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
		590	{
		591	XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1);
		592	XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h);
		593	}
		594	}
		595
		596	XRenderFreePicture (dpy, mul);
		597	XRenderFreePicture (dpy, dst);
		598	XRenderFreePicture (dpy, src);
		599
		600	::swap (img->ref, ref);
		601	::swap (img->pm , pm );
		602
		603	delete img;
		604	}
		605
		606	void
		607	rxvt_img::draw (rxvt_img *img, int op, nv mask)
		608	{
		609	unshare ();
		610
		611	Display *dpy = s->display->dpy;
		612	Picture src = img->picture ();
		613	Picture dst = picture ();
		614	Picture mask_p = 0;
		615
		616	if (mask != 1.)
		617	{
		618	mask_p = create_xrender_mask (dpy, img->pm, False, False);
		619	XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) };
216	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	620	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
		621	}
217		622
218	XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	623	XRenderComposite (dpy, op, src, mask_p, dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h);
219		624
220	XRenderFreePicture (dpy, src);	625	XRenderFreePicture (dpy, src);
221	XRenderFreePicture (dpy, dst);	626	XRenderFreePicture (dpy, dst);
222	}
223		627
224	void	628	if (mask_p)
225	rxvt_img::contrast (double r, double g, double b, double a)	629	XRenderFreePicture (dpy, mask_p);
226	{	630	}
227	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
228	return;
229		631
		632	rxvt_img *
		633	rxvt_img::clone ()
		634	{
		635	return new rxvt_img (*this);
		636	}
		637
		638	rxvt_img *
		639	rxvt_img::reify ()
		640	{
		641	if (x == 0 && y == 0 && w == ref->w && h == ref->h)
		642	return clone ();
		643
230	Display *dpy = s->display->dpy;	644	Display *dpy = s->display->dpy;
231	Picture src = create_xrender_mask (dpy, pm, True);	645
		646	// add an alpha channel if...
		647	bool alpha = !format->direct.alphaMask // pixmap has none yet
		648	&& (x \|\| y) // we need one because of non-zero offset
		649	&& repeat == RepeatNone; // and we have no good pixels to fill with
		650
		651	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
		652	img->alloc ();
		653
		654	Picture src = picture ();
232	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	655	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
233		656
234	XRenderColor mask_c;	657	if (alpha)
235	mask_c.red = float_to_component (r);	658	{
236	mask_c.green = float_to_component (g);	659	XRenderColor rc = { 0, 0, 0, 0 };
237	mask_c.blue = float_to_component (b);	660	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
238	mask_c.alpha = float_to_component (a);	661	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
239	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	662	}
240		663	else
241	XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	664	XRenderComposite (dpy, PictOpSrc, src, None, dst, -x, -y, 0, 0, 0, 0, w, h);
242		665
243	XRenderFreePicture (dpy, src);	666	XRenderFreePicture (dpy, src);
244	XRenderFreePicture (dpy, dst);	667	XRenderFreePicture (dpy, dst);
245	}
246
247	bool
248	rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
249	{
250	Display *dpy = s->display->dpy;
251
252	if (s->visual->c_class != TrueColor)
253	return false;
254
255	uint32_t red_mask, green_mask, blue_mask, alpha_mask;
256
257	red_mask = (uint32_t)format->direct.redMask << format->direct.red;
258	green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
259	blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue;
260	alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
261
262	int width_r = ecb_popcount32 (red_mask);
263	int width_g = ecb_popcount32 (green_mask);
264	int width_b = ecb_popcount32 (blue_mask);
265	int width_a = ecb_popcount32 (alpha_mask);
266
267	if (width_r > 8 \|\| width_g > 8 \|\| width_b > 8 \|\| width_a > 8)
268	return false;
269
270	int sh_r = ecb_ctz32 (red_mask);
271	int sh_g = ecb_ctz32 (green_mask);
272	int sh_b = ecb_ctz32 (blue_mask);
273	int sh_a = ecb_ctz32 (alpha_mask);
274
275	if (width > 32767 \|\| height > 32767)
276	return false;
277
278	XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
279	width, height, 32, 0);
280	if (!ximage)
281	return false;
282
283	if (height > INT_MAX / ximage->bytes_per_line
284	\|\| !(ximage->data = (char )malloc (height ximage->bytes_per_line)))
285	{
286	XDestroyImage (ximage);
287	return false;
288	}
289
290	GC gc = XCreateGC (dpy, pm, 0, 0);
291
292	ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
293
294	int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
295	int channels = gdk_pixbuf_get_n_channels (pixbuf);
296	unsigned char row = gdk_pixbuf_get_pixels (pixbuf) + src_y rowstride + src_x * channels;
297	char *line = ximage->data;
298
299	for (int y = 0; y < height; y++)
300	{
301	for (int x = 0; x < width; x++)
302	{
303	unsigned char pixel = row + x channels;
304	uint32_t value;
305	unsigned char r, g, b, a;
306
307	if (channels == 4)
308	{
309	a = pixel[3];
310	r = pixel[0] * a / 0xff;
311	g = pixel[1] * a / 0xff;
312	b = pixel[2] * 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	}
332
333	row += rowstride;
334	line += ximage->bytes_per_line;
335	}
336
337	XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);
338	XDestroyImage (ximage);
339	XFreeGC (dpy, gc);
340
341	return true;
342	}
343
344	rxvt_img *
345	rxvt_img::clone ()
346	{
347	rxvt_img *img = new rxvt_img (s, format, w, h);
348
349	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
350	XCopyArea (s->display->dpy, pm, img->pm, gc, 0, 0, w, h, 0, 0);
351	XFreeGC (s->display->dpy, gc);
352		668
353	return img;	669	return img;
354	}	670	}
355		671
356	rxvt_img *	672	rxvt_img *
357	rxvt_img::sub_rect (int x, int y, int width, int height)	673	rxvt_img::sub_rect (int x, int y, int width, int height)
358	{	674	{
		675	rxvt_img *img = clone ();
		676
		677	img->x -= x;
		678	img->y -= y;
		679
		680	if (w != width \|\| h != height)
		681	{
		682	img->w = width;
		683	img->h = height;
		684
		685	rxvt_img *img2 = img->reify ();
		686	delete img;
		687	img = img2;
		688	}
		689
		690	return img;
		691	}
		692
		693	rxvt_img *
		694	rxvt_img::transform (nv matrix[3][3])
		695	{
		696	// calculate new pixel bounding box coordinates
		697	nv r[2], rmin[2], rmax[2];
		698
		699	mat3x3 m (matrix);
		700
		701	for (int i = 0; i < 2; ++i)
		702	{
		703	nv v;
		704
		705	v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v; r [i] = v;
		706	v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
		707	v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		708	v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		709	}
		710
		711	float sx = rmin [0] - x;
		712	float sy = rmin [1] - y;
		713
		714	// TODO: adjust matrix for subpixel accuracy
		715	int nx = floor (rmin [0]);
		716	int ny = floor (rmin [1]);
		717
		718	int new_width = ceil (rmax [0] - rmin [0]);
		719	int new_height = ceil (rmax [1] - rmin [1]);
		720
		721	m = mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y);
		722
		723	mat3x3 inv = m.invert ();
		724
359	rxvt_img *img = new rxvt_img (s, format, width, height);	725	rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat);
		726	img->alloc ();
360		727
361	Display *dpy = s->display->dpy;	728	Display *dpy = s->display->dpy;
362	XRenderPictureAttributes pa;	729	Picture src = picture ();
363	pa.repeat = repeat;
364	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
365	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	730	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
366		731
		732	XTransform xfrm;
		733
		734	for (int i = 0; i < 3; ++i)
		735	for (int j = 0; j < 3; ++j)
		736	xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
		737
		738	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
		739	XRenderSetPictureTransform (dpy, src, &xfrm);
367	XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, width, height);	740	XRenderComposite (dpy, PictOpSrc, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
		741	#if 1
		742	{
		743	XRenderColor rc = { 65535,0,0,65535 };
		744	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, new_width, new_height);
		745	}{
		746	XRenderColor rc = { 0,0,0,65535 };
		747	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 1, 1, new_width - 2, new_height - 2);
		748	}
		749	XRenderComposite (dpy, PictOpOver, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
		750	#endif
368		751
369	XRenderFreePicture (dpy, src);	752	XRenderFreePicture (dpy, src);
370	XRenderFreePicture (dpy, dst);	753	XRenderFreePicture (dpy, dst);
371		754
372	return img;	755	return img;
373	}	756	}
374		757
375	rxvt_img *	758	rxvt_img *
376	rxvt_img::transform (int new_width, int new_height, double matrix[9])	759	rxvt_img::scale (int new_width, int new_height)
377	{	760	{
378	rxvt_img *img = new rxvt_img (s, format, new_width, new_height);	761	if (w == new_width && h == new_height)
		762	return clone ();
379		763
380	Display *dpy = s->display->dpy;	764	nv matrix[3][3] = {
381	XRenderPictureAttributes pa;	765	{ new_width / (nv)w, 0, 0 },
		766	{ 0, new_height / (nv)h, 0 },
		767	{ 0, 0, 1 }
		768	};
		769
		770	int old_repeat_mode = repeat;
		771	repeat = RepeatPad; // not right, but xrender can't properly scale it seems
		772
		773	rxvt_img *img = transform (matrix);
		774
		775	repeat = old_repeat_mode;
382	pa.repeat = repeat;	776	img->repeat = repeat;
383	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);	777
		778	return img;
		779	}
		780
		781	rxvt_img *
		782	rxvt_img::rotate (int cx, int cy, nv phi)
		783	{
		784	nv s = sin (phi);
		785	nv c = cos (phi);
		786
		787	nv matrix[3][3] = {
		788	#if 0
		789	{ c, -s, cx - c * cx + s * cy },
		790	{ s, c, cy - s * cx - c * cy },
		791	{ 0, 0, 1 }
		792	#else
		793	{ c, -s, 0 },
		794	{ s, c, 0 },
		795	{ 0, 0, 1 }
		796	#endif
		797	};
		798
		799	move (-cx, -cy);
		800	rxvt_img *img = transform (matrix);
		801	move ( cx, cy);
		802	img->move (cx, cy);
		803
		804	return img;
		805	}
		806
		807	rxvt_img *
		808	rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
		809	{
		810	if (new_format == format)
		811	return clone ();
		812
		813	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
		814	img->alloc ();
		815
		816	Display *dpy = s->display->dpy;
		817	Picture src = picture ();
384	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	818	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
		819	int op = PictOpSrc;
385		820
386	XTransform xfrm;	821	if (format->direct.alphaMask && !new_format->direct.alphaMask)
		822	{
		823	// does it have to be that complicated
		824	XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
		825	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
387		826
388	for (int i = 0; i < 3; ++i)	827	op = PictOpOver;
389	for (int j = 0; j < 3; ++j)	828	}
390	xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
391		829
392	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
393	XRenderSetPictureTransform (dpy, src, &xfrm);
394	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);	830	XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
395		831
396	XRenderFreePicture (dpy, src);	832	XRenderFreePicture (dpy, src);
397	XRenderFreePicture (dpy, dst);	833	XRenderFreePicture (dpy, dst);
398		834
399	return img;	835	return img;
400	}	836	}
401		837
402	rxvt_img *	838	rxvt_img *
403	rxvt_img::scale (int new_width, int new_height)
404	{
405	double matrix[9] = {
406	w / (double)new_width, 0, 0,
407	0, h / (double)new_height, 0,
408	0, 0, 1
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)
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);
427	}
428
429	rxvt_img *
430	rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg)
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	int op = PictOpSrc;
438
439	if (format->direct.alphaMask && !new_format->direct.alphaMask)
440	{
441	// does it have to be that complicated
442	rgba c;
443	bg.get (c);
444
445	XRenderColor rc = { c.r, c.g, c.b, 0xffff };
446	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
447
448	op = PictOpOver;
449	}
450
451	XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
452
453	XRenderFreePicture (dpy, src);
454	XRenderFreePicture (dpy, dst);
455
456	return img;
457	}
458
459	rxvt_img *
460	rxvt_img::blend (rxvt_img *img, double factor)	839	rxvt_img::blend (rxvt_img *img, nv factor)
461	{	840	{
462	rxvt_img *img2 = clone ();	841	rxvt_img *img2 = clone ();
463	Display *dpy = s->display->dpy;	842	Display *dpy = s->display->dpy;
464	Picture src = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	843	Picture src = img->picture ();
465	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);	844	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
466	Picture mask = create_xrender_mask (dpy, img->pm, False);	845	Picture mask = create_xrender_mask (dpy, img->pm, False, False);
467		846
468	XRenderColor mask_c;	847	XRenderColor mask_c;
469		848
470	mask_c.alpha = float_to_component (factor);	849	mask_c.alpha = float_to_component (factor);
471	mask_c.red =	850	mask_c.red =

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Comparing rxvt-unicode/src/rxvtimg.C (file contents): Revision 1.30 by root, Wed Jun 6 22:01:44 2012 UTC vs. Revision 1.92 by root, Fri Jun 15 18:05:15 2012 UTC

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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.30 by root, Wed Jun 6 22:01:44 2012 UTC vs.
Revision 1.92 by root, Fri Jun 15 18:05:15 2012 UTC