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

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.47 by root, Thu Jun 7 19:06:26 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
		8	typedef rxvt_img::nv nv;
		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
7	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int x, int y, int width, int height, int repeat)	152	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int x, int y, int width, int height, int repeat)
8	: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),	153	: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
9	pm(0), ref(0)	154	pm(0), ref(0)
10	{	155	{
11	}	156	}
13	rxvt_img::rxvt_img (const rxvt_img &img)	158	rxvt_img::rxvt_img (const rxvt_img &img)
14	: s(img.s), x(img.x), y(img.y), w(img.w), h(img.h), format(img.format), repeat(img.repeat), pm(img.pm), ref(img.ref)	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)
15	{	160	{
16	++ref->cnt;	161	++ref->cnt;
17	}	162	}
18
19	#if 0
20	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height, Pixmap pixmap)
21	: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap)
22	{
23	}
24	#endif
25		163
26	rxvt_img *	164	rxvt_img *
27	rxvt_img::new_from_root (rxvt_screen *s)	165	rxvt_img::new_from_root (rxvt_screen *s)
28	{	166	{
29	Display *dpy = s->display->dpy;	167	Display *dpy = s->display->dpy;
…		…
56	img->ref->ours = false;	194	img->ref->ours = false;
57		195
58	return img;	196	return img;
59	}	197	}
60		198
		199	# if HAVE_PIXBUF
		200
61	rxvt_img *	201	rxvt_img *
62	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)	202	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)
63	{	203	{
		204	Display *dpy = s->display->dpy;
		205
64	int width = gdk_pixbuf_get_width (pb);	206	int width = gdk_pixbuf_get_width (pb);
65	int height = gdk_pixbuf_get_height (pb);	207	int height = gdk_pixbuf_get_height (pb);
66		208
67	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks	209	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks
68	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");	210	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
69		211
70	// since we require rgb24/argb32 formats from xrender we assume	212	// since we require rgb24/argb32 formats from xrender we assume
71	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender	213	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender
72	int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24;	214
		215	int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
73		216
74	XImage xi;	217	XImage xi;
75		218
76	xi.width = width;	219	xi.width = width;
77	xi.height = height;	220	xi.height = height;
78	xi.xoffset = 0;	221	xi.xoffset = 0;
79	xi.format = ZPixmap;	222	xi.format = ZPixmap;
80	xi.byte_order = MSBFirst; // maybe go for host byte order, because servers are usually local?	223	xi.byte_order = ImageByteOrder (dpy);
81	xi.bitmap_unit = 32;	224	xi.bitmap_unit = 0; //XY only, unused
82	xi.bitmap_bit_order = MSBFirst;	225	xi.bitmap_bit_order = 0; //XY only, unused
83	xi.bitmap_pad = 32;	226	xi.bitmap_pad = BitmapPad (dpy);
84	xi.depth = depth;	227	xi.depth = 32;
85	xi.bytes_per_line = 0;	228	xi.bytes_per_line = 0;
86	xi.bits_per_pixel = 32;	229	xi.bits_per_pixel = 32; //Z only
87	xi.red_mask = 0x00ff0000;	230	xi.red_mask = 0x00000000; //Z only, unused
88	xi.green_mask = 0x0000ff00;	231	xi.green_mask = 0x00000000; //Z only, unused
89	xi.blue_mask = 0x000000ff;	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;
90		236
91	if (!XInitImage (&xi))	237	if (!XInitImage (&xi))
92	rxvt_fatal ("unable to initialise ximage, please report.\n");	238	rxvt_fatal ("unable to initialise ximage, please report.\n");
93		239
94	if (height > INT_MAX / xi.bytes_per_line)	240	if (height > INT_MAX / xi.bytes_per_line)
95	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");	241	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
96		242
97	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);	243	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);
98		244
99	int rowstride = gdk_pixbuf_get_rowstride (pb);	245	int rowstride = gdk_pixbuf_get_rowstride (pb);
100		246	bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb);
101	assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb));
102	unsigned char *row = gdk_pixbuf_get_pixels (pb);	247	unsigned char *row = gdk_pixbuf_get_pixels (pb);
		248
103	char *line = xi.data;	249	char *line = xi.data;
104		250
105	for (int y = 0; y < height; y++)	251	for (int y = 0; y < height; y++)
106	{	252	{
107	unsigned char r, g, b, a;
108	unsigned char *data = row;	253	unsigned char *src = row;
		254	uint32_t dst = (uint32_t )line;
109		255
110	if (depth == 24)	256	if (!pb_has_alpha)
111	for (int x = 0; x < width; x++)	257	for (int x = 0; x < width; x++)
112	{	258	{
113	r = *data++;	259	uint8_t r = *src++;
114	g = *data++;	260	uint8_t g = *src++;
115	b = *data++;	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
116	*line++ = 0;	268	*dst++ = v;
117	*line++ = r;
118	*line++ = g;
119	*line++ = b;
120	}	269	}
121	else	270	else
122	for (int x = 0; x < width; x++)	271	for (int x = 0; x < width; x++)
123	{	272	{
124	r = *data++;	273	uint32_t v = (uint32_t )src; src += 4;
125	g = *data++;	274
126	b = *data++;	275	if (ecb_big_endian ())
127	a = *data++;	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
128	*line++ = a;	283	*dst++ = v;
129	*line++ = r;
130	*line++ = g;
131	*line++ = b;
132	}	284	}
133		285
134	row += rowstride;	286	row += rowstride;
		287	line += xi.bytes_per_line;
135	}	288	}
136		289
137	Display *dpy = s->display->dpy;
138
139	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height);	290	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
140	img->alloc ();	291	img->alloc ();
141		292
142	GC gc = XCreateGC (dpy, img->pm, 0, 0);	293	GC gc = XCreateGC (dpy, img->pm, 0, 0);
143	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);	294	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
144	XFreeGC (dpy, gc);	295	XFreeGC (dpy, gc);
…		…
162	g_object_unref (pb);	313	g_object_unref (pb);
163		314
164	return img;	315	return img;
165	}	316	}
166		317
		318	# endif
		319
167	void	320	void
168	rxvt_img::destroy ()	321	rxvt_img::destroy ()
169	{	322	{
170	if (--ref->cnt)	323	if (--ref->cnt)
171	return;	324	return;
…		…
187	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);	340	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
188	ref = new pixref (w, h);	341	ref = new pixref (w, h);
189	}	342	}
190		343
191	Picture	344	Picture
192	rxvt_img::src_picture ()	345	rxvt_img::picture ()
193	{	346	{
194	Display *dpy = s->display->dpy;	347	Display *dpy = s->display->dpy;
195		348
196	XRenderPictureAttributes pa;	349	XRenderPictureAttributes pa;
197	pa.repeat = repeat;	350	pa.repeat = repeat;
…		…
204	rxvt_img::unshare ()	357	rxvt_img::unshare ()
205	{	358	{
206	if (ref->cnt == 1 && ref->ours)	359	if (ref->cnt == 1 && ref->ours)
207	return;	360	return;
208		361
209	//TODO: maybe should reify instead
210	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);	362	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
211	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);	363	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
212	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);	364	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
213	XFreeGC (s->display->dpy, gc);	365	XFreeGC (s->display->dpy, gc);
214		366
…		…
217	pm = pm2;	369	pm = pm2;
218	ref = new pixref (ref->w, ref->h);	370	ref = new pixref (ref->w, ref->h);
219	}	371	}
220		372
221	void	373	void
222	rxvt_img::fill (const rxvt_color &c)	374	rxvt_img::fill (const rgba &c)
223	{	375	{
224	XGCValues gcv;	376	XRenderColor rc = { c.r, c.g, c.b, c.a };
225	gcv.foreground = c;	377
226	GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);	378	Display *dpy = s->display->dpy;
227	XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);	379	Picture src = picture ();
228	XFreeGC (s->display->dpy, gc);	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 );
		405
		406	delete img;
229	}	407	}
230		408
231	static void	409	static void
232	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)	410	get_gaussian_kernel (int radius, int width, nv kernel, XFixed params)
233	{	411	{
234	double sigma = radius / 2.0;	412	nv sigma = radius / 2.0;
235	double scale = sqrt (2.0 * M_PI) * sigma;	413	nv scale = sqrt (2.0 * M_PI) * sigma;
236	double sum = 0.0;	414	nv sum = 0.0;
237		415
238	for (int i = 0; i < width; i++)	416	for (int i = 0; i < width; i++)
239	{	417	{
240	double x = i - width / 2;	418	nv x = i - width / 2;
241	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;	419	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
242	sum += kernel[i];	420	sum += kernel[i];
243	}	421	}
244		422
245	params[0] = XDoubleToFixed (width);	423	params[0] = XDoubleToFixed (width);
…		…
255	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))	433	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
256	return clone ();	434	return clone ();
257		435
258	Display *dpy = s->display->dpy;	436	Display *dpy = s->display->dpy;
259	int size = max (rh, rv) * 2 + 1;	437	int size = max (rh, rv) * 2 + 1;
260	double kernel = (double )malloc (size * sizeof (double));	438	nv kernel = (nv )malloc (size * sizeof (nv));
261	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));	439	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
262	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);	440	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
263	img->alloc ();	441	img->alloc ();
264		442
265	Picture src = src_picture ();
266
267	XRenderPictureAttributes pa;	443	XRenderPictureAttributes pa;
268	pa.repeat = RepeatPad;	444	pa.repeat = RepeatPad;
269	Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);	445	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
		446	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
270		447
271	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);	448	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
272	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);	449	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
273	XFreePixmap (dpy, tmp_pm);	450	XFreePixmap (dpy, tmp_pm);
274		451
…		…
290		467
291	size = rv * 2 + 1;	468	size = rv * 2 + 1;
292	get_gaussian_kernel (rv, size, kernel, params);	469	get_gaussian_kernel (rv, size, kernel, params);
293	::swap (params[0], params[1]);	470	::swap (params[0], params[1]);
294		471
295	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);	472	XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
296	XRenderComposite (dpy,	473	XRenderComposite (dpy,
297	PictOpSrc,	474	PictOpSrc,
298	tmp,	475	tmp,
299	None,	476	None,
300	dst,	477	dst,
…		…
304	w, h);	481	w, h);
305	}	482	}
306		483
307	free (kernel);	484	free (kernel);
308	free (params);	485	free (params);
		486
309	XRenderFreePicture (dpy, src);	487	XRenderFreePicture (dpy, src);
310	XRenderFreePicture (dpy, dst);	488	XRenderFreePicture (dpy, dst);
311	XRenderFreePicture (dpy, tmp);	489	XRenderFreePicture (dpy, tmp);
312		490
313	return img;	491	return img;
314	}	492	}
315		493
316	static Picture	494	static Picture
317	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)	495	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha)
318	{	496	{
319	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);	497	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
320		498
321	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);	499	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
322	XRenderPictureAttributes pa;	500	XRenderPictureAttributes pa;
323	pa.repeat = True;	501	pa.repeat = RepeatNormal;
		502	pa.component_alpha = component_alpha;
324	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);	503	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat \| CPComponentAlpha, &pa);
325		504
326	XFreePixmap (dpy, pixmap);	505	XFreePixmap (dpy, pixmap);
327		506
328	return mask;	507	return mask;
329	}	508	}
330		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
331	void	529	void
332	rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)	530	rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
333	{	531	{
		532	unshare ();
		533
334	Display *dpy = s->display->dpy;	534	Display *dpy = s->display->dpy;
335	Picture src = create_xrender_mask (dpy, pm, True);
336	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	535	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
337		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;
338	XRenderColor mask_c;	541	XRenderColor mask_c;
339	mask_c.red = r;	542
340	mask_c.green = g;	543	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
341	mask_c.blue = b;	544	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
342	mask_c.alpha = 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) };
343	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	620	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
		621	}
344		622
345	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);
346		624
347	XRenderFreePicture (dpy, src);	625	XRenderFreePicture (dpy, src);
348	XRenderFreePicture (dpy, dst);	626	XRenderFreePicture (dpy, dst);
349	}
350		627
351	void	628	if (mask_p)
352	rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
353	{
354	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
355	return;
356
357	Display *dpy = s->display->dpy;
358	Picture src = create_xrender_mask (dpy, pm, True);
359	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
360
361	XRenderColor mask_c;
362	mask_c.red = r;
363	mask_c.green = g;
364	mask_c.blue = b;
365	mask_c.alpha = a;
366	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
367
368	XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
369
370	XRenderFreePicture (dpy, src);	629	XRenderFreePicture (dpy, mask_p);
371	XRenderFreePicture (dpy, dst);
372	}	630	}
373		631
374	rxvt_img *	632	rxvt_img *
375	rxvt_img::clone ()	633	rxvt_img::clone ()
376	{	634	{
377	return new rxvt_img (*this);	635	return new rxvt_img (*this);
378	}
379
380	static XRenderPictFormat *
381	find_alpha_format_for (Display dpy, XRenderPictFormat format)
382	{
383	if (format->direct.alphaMask)
384	return format; // already has alpha
385
386	// try to find a suitable alpha format, one bit alpha is enough for our purposes
387	if (format->type == PictTypeDirect)
388	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
389	if (f->direct.alphaMask
390	&& f->type == PictTypeDirect
391	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
392	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
393	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
394	return f;
395
396	// should be a very good fallback
397	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
398	}	636	}
399		637
400	rxvt_img *	638	rxvt_img *
401	rxvt_img::reify ()	639	rxvt_img::reify ()
402	{	640	{
403	if (x == 0 && y == 0 && w == ref->w && h == ref->h)	641	if (x == 0 && y == 0 && w == ref->w && h == ref->h)
404	return clone ();	642	return clone ();
405		643
406	Display *dpy = s->display->dpy;	644	Display *dpy = s->display->dpy;
407		645
		646	// add an alpha channel if...
408	bool alpha = !format->direct.alphaMask	647	bool alpha = !format->direct.alphaMask // pixmap has none yet
409	&& (x \|\| y)	648	&& (x \|\| y) // we need one because of non-zero offset
410	&& repeat == RepeatNone;	649	&& repeat == RepeatNone; // and we have no good pixels to fill with
411		650
412	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);	651	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
413	img->alloc ();	652	img->alloc ();
414		653
415	Picture src = src_picture ();	654	Picture src = picture ();
416	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	655	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
417		656
418	if (alpha)	657	if (alpha)
419	{	658	{
420	XRenderColor rc = { 0, 0, 0, 0 };	659	XRenderColor rc = { 0, 0, 0, 0 };
421	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles	660	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
422	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h);	661	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
423	}	662	}
424	else	663	else
425	XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);	664	XRenderComposite (dpy, PictOpSrc, src, None, dst, -x, -y, 0, 0, 0, 0, w, h);
426		665
427	XRenderFreePicture (dpy, src);	666	XRenderFreePicture (dpy, src);
428	XRenderFreePicture (dpy, dst);	667	XRenderFreePicture (dpy, dst);
429		668
430	return img;	669	return img;
…		…
433	rxvt_img *	672	rxvt_img *
434	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)
435	{	674	{
436	rxvt_img *img = clone ();	675	rxvt_img *img = clone ();
437		676
438	img->x += x;	677	img->x -= x;
439	img->y += y;	678	img->y -= y;
440		679
441	if (w != width \|\| h != height)	680	if (w != width \|\| h != height)
442	{	681	{
443	img->w = width;	682	img->w = width;
444	img->h = height;	683	img->h = height;
…		…
450		689
451	return img;	690	return img;
452	}	691	}
453		692
454	rxvt_img *	693	rxvt_img *
455	rxvt_img::transform (int new_width, int new_height, double matrix[9])	694	rxvt_img::transform (nv matrix[3][3])
456	{	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
457	rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat);	725	rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat);
458	img->alloc ();	726	img->alloc ();
459		727
460	Display *dpy = s->display->dpy;	728	Display *dpy = s->display->dpy;
461	Picture src = src_picture ();	729	Picture src = picture ();
462	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	730	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
463		731
464	XTransform xfrm;	732	XTransform xfrm;
465		733
466	for (int i = 0; i < 3; ++i)	734	for (int i = 0; i < 3; ++i)
467	for (int j = 0; j < 3; ++j)	735	for (int j = 0; j < 3; ++j)
468	xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);	736	xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
469
470	#if 0
471	xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
472	xfrm.matrix [1][2] -= XDoubleToFixed (y);
473	#endif
474		737
475	XRenderSetPictureFilter (dpy, src, "good", 0, 0);	738	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
476	XRenderSetPictureTransform (dpy, src, &xfrm);	739	XRenderSetPictureTransform (dpy, src, &xfrm);
477	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_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
478		751
479	XRenderFreePicture (dpy, src);	752	XRenderFreePicture (dpy, src);
480	XRenderFreePicture (dpy, dst);	753	XRenderFreePicture (dpy, dst);
481		754
482	return img;	755	return img;
…		…
486	rxvt_img::scale (int new_width, int new_height)	759	rxvt_img::scale (int new_width, int new_height)
487	{	760	{
488	if (w == new_width && h == new_height)	761	if (w == new_width && h == new_height)
489	return clone ();	762	return clone ();
490		763
491	double matrix[9] = {	764	nv matrix[3][3] = {
492	w / (double)new_width, 0, 0,	765	{ new_width / (nv)w, 0, 0 },
493	0, h / (double)new_height, 0,	766	{ 0, new_height / (nv)h, 0 },
494	0, 0, 1	767	{ 0, 0, 1 }
495	};	768	};
496		769
497	int old_repeat_mode = repeat;	770	int old_repeat_mode = repeat;
498	repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems	771	repeat = RepeatPad; // not right, but xrender can't properly scale it seems
499		772
500	rxvt_img *img = transform (new_width, new_height, matrix);	773	rxvt_img *img = transform (matrix);
501		774
502	repeat = old_repeat_mode;	775	repeat = old_repeat_mode;
503	img->repeat = repeat;	776	img->repeat = repeat;
504		777
505	return img;	778	return img;
506	}	779	}
507		780
508	rxvt_img *	781	rxvt_img *
509	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)	782	rxvt_img::rotate (int cx, int cy, nv phi)
510	{	783	{
511	double s = sin (phi);	784	nv s = sin (phi);
512	double c = cos (phi);	785	nv c = cos (phi);
513		786
514	double matrix[9] = {	787	nv matrix[3][3] = {
		788	#if 0
515	c, -s, -c * x + s * y + x,	789	{ c, -s, cx - c * cx + s * cy },
516	s, c, -s * x - c * y + y,	790	{ s, c, cy - s * cx - c * cy },
517	0, 0, 1	791	{ 0, 0, 1 }
		792	#else
		793	{ c, -s, 0 },
		794	{ s, c, 0 },
		795	{ 0, 0, 1 }
		796	#endif
518	};	797	};
519		798
520	return transform (new_width, new_height, matrix);	799	move (-cx, -cy);
521	}	800	rxvt_img *img = transform (matrix);
		801	move ( cx, cy);
		802	img->move (cx, cy);
522		803
		804	return img;
		805	}
		806
523	rxvt_img *	807	rxvt_img *
524	rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg)	808	rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
525	{	809	{
526	if (new_format == format)	810	if (new_format == format)
527	return clone ();	811	return clone ();
528		812
529	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);	813	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
530	img->alloc ();	814	img->alloc ();
531		815
532	Display *dpy = s->display->dpy;	816	Display *dpy = s->display->dpy;
533	Picture src = src_picture ();	817	Picture src = picture ();
534	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);	818	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
535	int op = PictOpSrc;	819	int op = PictOpSrc;
536		820
537	if (format->direct.alphaMask && !new_format->direct.alphaMask)	821	if (format->direct.alphaMask && !new_format->direct.alphaMask)
538	{	822	{
539	// does it have to be that complicated	823	// does it have to be that complicated
540	rgba c;
541	bg.get (c);
542
543	XRenderColor rc = { c.r, c.g, c.b, 0xffff };	824	XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
544	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);	825	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
545		826
546	op = PictOpOver;	827	op = PictOpOver;
547	}	828	}
548		829
…		…
553		834
554	return img;	835	return img;
555	}	836	}
556		837
557	rxvt_img *	838	rxvt_img *
558	rxvt_img::blend (rxvt_img *img, double factor)	839	rxvt_img::blend (rxvt_img *img, nv factor)
559	{	840	{
560	rxvt_img *img2 = clone ();	841	rxvt_img *img2 = clone ();
561	Display *dpy = s->display->dpy;	842	Display *dpy = s->display->dpy;
562	Picture src = img->src_picture ();	843	Picture src = img->picture ();
563	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);	844	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
564	Picture mask = create_xrender_mask (dpy, img->pm, False);	845	Picture mask = create_xrender_mask (dpy, img->pm, False, False);
565		846
566	XRenderColor mask_c;	847	XRenderColor mask_c;
567		848
568	mask_c.alpha = float_to_component (factor);	849	mask_c.alpha = float_to_component (factor);
569	mask_c.red =	850	mask_c.red =

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Comparing rxvt-unicode/src/rxvtimg.C (file contents): Revision 1.47 by root, Thu Jun 7 19:06:26 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 1.47 by root, Thu Jun 7 19:06:26 2012 UTC vs.
Revision 1.92 by root, Fri Jun 15 18:05:15 2012 UTC