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

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.14 by root, Mon Jun 4 15:53:12 2012 UTC vs.
Revision 1.82 by root, Thu Jun 14 17:06:57 2012 UTC

…		…
2	#include "../config.h"	2	#include "../config.h"
3	#include "rxvt.h"	3	#include "rxvt.h"
4		4
5	#if HAVE_IMG	5	#if HAVE_IMG
6		6
7	#define float_to_component(d) ((d) * 65535.99)
8
9	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height)	7	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)	8	: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
		9	pm(0), ref(0)
17	{	10	{
		11	}
		12
		13	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)
		15	{
		16	++ref->cnt;
		17	}
		18
		19	rxvt_img *
		20	rxvt_img::new_from_root (rxvt_screen *s)
		21	{
		22	Display *dpy = s->display->dpy;
		23	unsigned int root_pm_w, root_pm_h;
		24	Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]);
		25	if (root_pixmap == None)
		26	root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]);
		27
		28	if (root_pixmap == None)
		29	return 0;
		30
		31	Window wdummy;
		32	int idummy;
		33	unsigned int udummy;
		34
		35	if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy))
		36	return 0;
		37
		38	rxvt_img *img = new rxvt_img (
		39	s,
		40	XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
		41	0,
		42	0,
		43	root_pm_w,
		44	root_pm_h
		45	);
		46
		47	img->pm = root_pixmap;
		48	img->ref = new pixref (root_pm_w, root_pm_h);
		49	img->ref->ours = false;
		50
		51	return img;
		52	}
		53
		54	# if HAVE_PIXBUF
		55
		56	rxvt_img *
		57	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)
		58	{
		59	Display *dpy = s->display->dpy;
		60
		61	int width = gdk_pixbuf_get_width (pb);
		62	int height = gdk_pixbuf_get_height (pb);
		63
		64	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks
		65	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
		66
		67	// since we require rgb24/argb32 formats from xrender we assume
		68	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender
		69
		70	int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
		71
		72	XImage xi;
		73
		74	xi.width = width;
		75	xi.height = height;
		76	xi.xoffset = 0;
		77	xi.format = ZPixmap;
		78	xi.byte_order = ImageByteOrder (dpy);
		79	xi.bitmap_unit = 0; //XY only, unused
		80	xi.bitmap_bit_order = 0; //XY only, unused
		81	xi.bitmap_pad = BitmapPad (dpy);
		82	xi.depth = 32;
		83	xi.bytes_per_line = 0;
		84	xi.bits_per_pixel = 32; //Z only
		85	xi.red_mask = 0x00000000; //Z only, unused
		86	xi.green_mask = 0x00000000; //Z only, unused
		87	xi.blue_mask = 0x00000000; //Z only, unused
		88	xi.obdata = 0; // probably unused
		89
		90	bool byte_order_mismatch = byte_order != xi.byte_order;
		91
		92	if (!XInitImage (&xi))
		93	rxvt_fatal ("unable to initialise ximage, please report.\n");
		94
		95	if (height > INT_MAX / xi.bytes_per_line)
		96	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
		97
		98	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);
		99
		100	int rowstride = gdk_pixbuf_get_rowstride (pb);
		101	bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb);
		102	unsigned char *row = gdk_pixbuf_get_pixels (pb);
		103
		104	char *line = xi.data;
		105
		106	for (int y = 0; y < height; y++)
		107	{
		108	unsigned char *src = row;
		109	uint32_t dst = (uint32_t )line;
		110
		111	if (!pb_has_alpha)
		112	for (int x = 0; x < width; x++)
		113	{
		114	uint8_t r = *src++;
		115	uint8_t g = *src++;
		116	uint8_t b = *src++;
		117
		118	uint32_t v = (255 << 24) \| (r << 16) \| (g << 8) \| b;
		119
		120	if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
		121	v = ecb_bswap32 (v);
		122
		123	*dst++ = v;
		124	}
		125	else
		126	for (int x = 0; x < width; x++)
		127	{
		128	uint32_t v = (uint32_t )src; src += 4;
		129
		130	if (ecb_big_endian ())
		131	v = ecb_bswap32 (v);
		132
		133	v = ecb_rotl32 (v, 8); // abgr to bgra
		134
		135	if (!byte_order_mismatch)
		136	v = ecb_bswap32 (v);
		137
		138	*dst++ = v;
		139	}
		140
		141	row += rowstride;
		142	line += xi.bytes_per_line;
		143	}
		144
		145	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
		146	img->alloc ();
		147
		148	GC gc = XCreateGC (dpy, img->pm, 0, 0);
		149	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
		150	XFreeGC (dpy, gc);
		151
		152	free (xi.data);
		153
		154	return img;
18	}	155	}
19		156
20	rxvt_img *	157	rxvt_img *
21	rxvt_img::new_from_file (rxvt_screen s, const char filename)	158	rxvt_img::new_from_file (rxvt_screen s, const char filename)
22	{	159	{
…		…
24	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);	161	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
25		162
26	if (!pb)	163	if (!pb)
27	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);	164	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
28		165
29	rxvt_img *img = new rxvt_img (	166	rxvt_img *img = new_from_pixbuf (s, pb);
30	s,
31	XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
32	gdk_pixbuf_get_width (pb),
33	gdk_pixbuf_get_height (pb)
34	);
35		167
36	img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);	168	g_object_unref (pb);
37		169
		170	return img;
		171	}
		172
		173	# endif
		174
		175	void
		176	rxvt_img::destroy ()
		177	{
		178	if (--ref->cnt)
38	return img;	179	return;
		180
		181	if (pm && ref->ours)
		182	XFreePixmap (s->display->dpy, pm);
		183
		184	delete ref;
39	}	185	}
40		186
41	rxvt_img::~rxvt_img ()	187	rxvt_img::~rxvt_img ()
42	{	188	{
43	if (!shared)	189	destroy ();
44	XFreePixmap (s->display->dpy, pm);	190	}
		191
		192	void
		193	rxvt_img::alloc ()
		194	{
		195	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
		196	ref = new pixref (w, h);
		197	}
		198
		199	Picture
		200	rxvt_img::src_picture ()
		201	{
		202	Display *dpy = s->display->dpy;
		203
		204	XRenderPictureAttributes pa;
		205	pa.repeat = repeat;
		206	Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
		207
		208	return pic;
45	}	209	}
46		210
47	void	211	void
48	rxvt_img::unshare ()	212	rxvt_img::unshare ()
49	{	213	{
50	if (!shared)	214	if (ref->cnt == 1 && ref->ours)
51	return;	215	return;
52		216
53	rxvt_img *img = clone ();	217	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
		218	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
		219	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
		220	XFreeGC (s->display->dpy, gc);
54		221
55	::swap (pm , img->pm);	222	destroy ();
56	::swap (shared, img->shared);
57		223
58	delete img;	224	pm = pm2;
		225	ref = new pixref (ref->w, ref->h);
59	}	226	}
60		227
61	void	228	void
62	rxvt_img::fill (const rxvt_color &c)	229	rxvt_img::fill (const rgba &c)
63	{	230	{
64	XGCValues gcv;	231	XRenderColor rc = { c.r, c.g, c.b, c.a };
65	gcv.foreground = c;	232
66	GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);	233	Display *dpy = s->display->dpy;
67	XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);	234	Picture src = src_picture ();
68	XFreeGC (s->display->dpy, gc);	235	XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h);
		236	XRenderFreePicture (dpy, src);
69	}	237	}
70		238
71	static void	239	static void
72	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)	240	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)
73	{	241	{
…		…
87		255
88	for (int i = 0; i < width; i++)	256	for (int i = 0; i < width; i++)
89	params[i+2] = XDoubleToFixed (kernel[i] / sum);	257	params[i+2] = XDoubleToFixed (kernel[i] / sum);
90	}	258	}
91		259
92	void	260	rxvt_img *
93	rxvt_img::blur (int rh, int rv)	261	rxvt_img::blur (int rh, int rv)
94	{	262	{
95	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))	263	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
96	return;	264	return clone ();
97		265
98	Display *dpy = s->display->dpy;	266	Display *dpy = s->display->dpy;
99	int size = max (rh, rv) * 2 + 1;	267	int size = max (rh, rv) * 2 + 1;
100	double kernel = (double )malloc (size * sizeof (double));	268	double kernel = (double )malloc (size * sizeof (double));
101	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));	269	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
		270	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
		271	img->alloc ();
102		272
103	XRenderPictureAttributes pa;	273	XRenderPictureAttributes pa;
104
105	pa.repeat = RepeatPad;	274	pa.repeat = RepeatPad;
106	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);	275	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
		276	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
		277
107	Pixmap tmp = XCreatePixmap (dpy, pm, w, h, format->depth);	278	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
108	Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa);	279	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
109	XFreePixmap (dpy, tmp);	280	XFreePixmap (dpy, tmp_pm);
110		281
111	if (kernel && params)	282	if (kernel && params)
112	{	283	{
113	size = rh * 2 + 1;	284	size = rh * 2 + 1;
114	get_gaussian_kernel (rh, size, kernel, params);	285	get_gaussian_kernel (rh, size, kernel, params);
115		286
116	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);	287	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
117	XRenderComposite (dpy,	288	XRenderComposite (dpy,
118	PictOpSrc,	289	PictOpSrc,
119	src,	290	src,
		291	None,
		292	tmp,
		293	0, 0,
		294	0, 0,
		295	0, 0,
		296	w, h);
		297
		298	size = rv * 2 + 1;
		299	get_gaussian_kernel (rv, size, kernel, params);
		300	::swap (params[0], params[1]);
		301
		302	XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
		303	XRenderComposite (dpy,
		304	PictOpSrc,
		305	tmp,
120	None,	306	None,
121	dst,	307	dst,
122	0, 0,	308	0, 0,
123	0, 0,	309	0, 0,
124	0, 0,	310	0, 0,
125	w, h);	311	w, h);
126
127	::swap (src, dst);
128
129	size = rv * 2 + 1;
130	get_gaussian_kernel (rv, size, kernel, params);
131	::swap (params[0], params[1]);
132
133	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
134	XRenderComposite (dpy,
135	PictOpSrc,
136	src,
137	None,
138	dst,
139	0, 0,
140	0, 0,
141	0, 0,
142	w, h);
143	}	312	}
144		313
145	free (kernel);	314	free (kernel);
146	free (params);	315	free (params);
		316
147	XRenderFreePicture (dpy, src);	317	XRenderFreePicture (dpy, src);
148	XRenderFreePicture (dpy, dst);	318	XRenderFreePicture (dpy, dst);
		319	XRenderFreePicture (dpy, tmp);
		320
		321	return img;
149	}	322	}
150		323
151	static Picture	324	static Picture
152	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)	325	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha)
153	{	326	{
154	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);	327	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
155		328
156	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);	329	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
157	XRenderPictureAttributes pa;	330	XRenderPictureAttributes pa;
158	pa.repeat = True;	331	pa.repeat = RepeatNormal;
		332	pa.component_alpha = component_alpha;
159	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);	333	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat \| CPComponentAlpha, &pa);
160		334
161	XFreePixmap (dpy, pixmap);	335	XFreePixmap (dpy, pixmap);
162		336
163	return mask;	337	return mask;
164	}	338	}
165		339
		340	static void
		341	extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
		342	{
		343	int32_t x = clamp (c, cl0, cl1);
		344	c -= x;
		345	xc = x;
		346	}
		347
		348	static bool
		349	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)
		350	{
		351	extract (cl0, cl1, r, xr);
		352	extract (cl0, cl1, g, xg);
		353	extract (cl0, cl1, b, xb);
		354	extract (cl0, cl1, a, xa);
		355
		356	return xr \| xg \| xb \| xa;
		357	}
		358
166	void	359	void
167	rxvt_img::brightness (double r, double g, double b, double a)	360	rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
168	{	361	{
		362	unshare ();
		363
169	Display *dpy = s->display->dpy;	364	Display *dpy = s->display->dpy;
170	Picture src = create_xrender_mask (dpy, pm, True);
171	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	365	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
172		366
		367	// loop should not be needed for brightness, as only -1..1 makes sense
		368	//while (r \| g \| b \| a)
		369	{
		370	unsigned short xr, xg, xb, xa;
173	XRenderColor mask_c;	371	XRenderColor mask_c;
174	mask_c.red = float_to_component (r);	372
175	mask_c.green = float_to_component (g);	373	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
176	mask_c.blue = float_to_component (b);
177	mask_c.alpha = float_to_component (a);
178	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	374	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
179		375
180	XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	376	if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
		377	{
		378	XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
		379	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		380	mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
		381	mask_c.green = -mask_c.green;
		382	mask_c.blue = -mask_c.blue;
		383	mask_c.alpha = -mask_c.alpha;
		384	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
		385	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		386	}
		387	}
		388
		389	XRenderFreePicture (dpy, dst);
181	}	390	}
182		391
183	void	392	void
184	rxvt_img::contrast (double r, double g, double b, double a)	393	rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
185	{	394	{
186	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))	395	if (r < 0 \|\| g < 0 \|\| b < 0 \|\| a < 0)
187	return;	396	rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
188		397
		398	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
		399	img->alloc ();
		400	img->fill (rgba (0, 0, 0, 0));
		401
		402	// premultiply (yeah, these are not exact, sue me or fix it)
		403	r = (r * (a >> 8)) >> 8;
		404	g = (g * (a >> 8)) >> 8;
		405	b = (b * (a >> 8)) >> 8;
		406
189	Display *dpy = s->display->dpy;	407	Display *dpy = s->display->dpy;
190	Picture src = create_xrender_mask (dpy, pm, True);	408
		409	Picture src = src_picture ();
191	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	410	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
		411	Picture mul = create_xrender_mask (dpy, pm, True, True);
192		412
		413	//TODO: this operator does not yet implement some useful contrast
		414	while (r \| g \| b \| a)
		415	{
		416	unsigned short xr, xg, xb, xa;
193	XRenderColor mask_c;	417	XRenderColor mask_c;
194	mask_c.red = float_to_component (r);	418
195	mask_c.green = float_to_component (g);	419	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
196	mask_c.blue = float_to_component (b);	420	{
197	mask_c.alpha = float_to_component (a);
198	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	421	XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1);
199
200	XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	422	XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h);
201	}	423	}
202
203	bool
204	rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
205	{
206	bool argb = format->id == PictStandardARGB32;
207
208	Display *dpy = s->display->dpy;
209
210	if (s->visual->c_class != TrueColor)
211	return false;
212
213	uint32_t red_mask, green_mask, blue_mask, alpha_mask;
214
215	if (argb)
216	{	424	}
217	red_mask = 0xff << 16;	425
218	green_mask = 0xff << 8;	426	XRenderFreePicture (dpy, mul);
219	blue_mask = 0xff;	427	XRenderFreePicture (dpy, dst);
220	alpha_mask = 0xff << 24;	428	XRenderFreePicture (dpy, src);
		429
		430	::swap (img->ref, ref);
		431	::swap (img->pm , pm );
		432
		433	delete img;
		434	}
		435
		436	rxvt_img *
		437	rxvt_img::clone ()
		438	{
		439	return new rxvt_img (*this);
		440	}
		441
		442	static XRenderPictFormat *
		443	find_alpha_format_for (Display dpy, XRenderPictFormat format)
		444	{
		445	if (format->direct.alphaMask)
		446	return format; // already has alpha
		447
		448	// try to find a suitable alpha format, one bit alpha is enough for our purposes
		449	if (format->type == PictTypeDirect)
		450	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
		451	if (f->direct.alphaMask
		452	&& f->type == PictTypeDirect
		453	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
		454	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
		455	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
		456	return f;
		457
		458	// should be a very good fallback
		459	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
		460	}
		461
		462	rxvt_img *
		463	rxvt_img::reify ()
		464	{
		465	if (x == 0 && y == 0 && w == ref->w && h == ref->h)
		466	return clone ();
		467
		468	Display *dpy = s->display->dpy;
		469
		470	// add an alpha channel if...
		471	bool alpha = !format->direct.alphaMask // pixmap has none yet
		472	&& (x \|\| y) // we need one because of non-zero offset
		473	&& repeat == RepeatNone; // and we have no good pixels to fill with
		474
		475	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
		476	img->alloc ();
		477
		478	Picture src = src_picture ();
		479	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
		480
		481	if (alpha)
		482	{
		483	XRenderColor rc = { 0, 0, 0, 0 };
		484	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
		485	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h);
221	}	486	}
222	else	487	else
223	{	488	XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);
224	red_mask = s->visual->red_mask;	489
225	green_mask = s->visual->green_mask;	490	XRenderFreePicture (dpy, src);
226	blue_mask = s->visual->blue_mask;	491	XRenderFreePicture (dpy, dst);
227	alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;	492
		493	return img;
		494	}
		495
		496	rxvt_img *
		497	rxvt_img::sub_rect (int x, int y, int width, int height)
		498	{
		499	rxvt_img *img = clone ();
		500
		501	img->x += x;
		502	img->y += y;
		503
		504	if (w != width \|\| h != height)
228	}	505	{
		506	img->w = width;
		507	img->h = height;
229		508
230	int width_r = ecb_popcount32 (red_mask);	509	rxvt_img *img2 = img->reify ();
231	int width_g = ecb_popcount32 (green_mask);	510	delete img;
232	int width_b = ecb_popcount32 (blue_mask);	511	img = img2;
233	int width_a = ecb_popcount32 (alpha_mask);
234
235	if (width_r > 8 \|\| width_g > 8 \|\| width_b > 8 \|\| width_a > 8)
236	return false;
237
238	int sh_r = ecb_ctz32 (red_mask);
239	int sh_g = ecb_ctz32 (green_mask);
240	int sh_b = ecb_ctz32 (blue_mask);
241	int sh_a = ecb_ctz32 (alpha_mask);
242
243	if (width > 32767 \|\| height > 32767)
244	return false;
245
246	XImage *ximage = XCreateImage (dpy, s->visual, argb ? 32 : format->depth, ZPixmap, 0, 0,
247	width, height, 32, 0);
248	if (!ximage)
249	return false;
250
251	if (height > INT_MAX / ximage->bytes_per_line
252	\|\| !(ximage->data = (char )malloc (height ximage->bytes_per_line)))
253	{	512	}
254	XDestroyImage (ximage);	513
255	return false;	514	return img;
		515	}
		516
		517	static void
		518	mat_invert (double mat[3][3], double (&inv)[3][3])
		519	{
		520	double s0 = mat [2][2] * mat [1][1] - mat [2][1] * mat [1][2];
		521	double s1 = mat [2][1] * mat [0][2] - mat [2][2] * mat [0][1];
		522	double s2 = mat [1][2] * mat [0][1] - mat [1][1] * mat [0][2];
		523
		524	double invdet = 1. / (mat [0][0] * s0 + mat [1][0] * s1 + mat [2][0] * s2);
		525
		526	inv [0][0] = invdet * s0;
		527	inv [0][1] = invdet * s1;
		528	inv [0][2] = invdet * s2;
		529
		530	inv [1][0] = invdet * (mat [2][0] * mat [1][2] - mat [2][2] * mat [1][0]);
		531	inv [1][1] = invdet * (mat [2][2] * mat [0][0] - mat [2][0] * mat [0][2]);
		532	inv [1][2] = invdet * (mat [1][0] * mat [0][2] - mat [1][2] * mat [0][0]);
		533
		534	inv [2][0] = invdet * (mat [2][1] * mat [1][0] - mat [2][0] * mat [1][1]);
		535	inv [2][1] = invdet * (mat [2][0] * mat [0][1] - mat [2][1] * mat [0][0]);
		536	inv [2][2] = invdet * (mat [1][1] * mat [0][0] - mat [1][0] * mat [0][1]);
		537	}
		538
		539	static double
		540	mat_apply (double mat[3][3], int i, double x, double y)
		541	{
		542	double v = mat [i][0] * x + mat [i][1] * y + mat [i][2];
		543	double w = mat [2][0] * x + mat [2][1] * y + mat [2][2];
		544
		545	return v * (1. / w);
		546	}
		547
		548	rxvt_img *
		549	rxvt_img::transform (double matrix[3][3])
		550	{
		551	// find new offset
		552	int ox = mat_apply (matrix, 0, x, y);
		553	int oy = mat_apply (matrix, 1, x, y);
		554
		555	// calculate new pixel bounding box coordinates
		556	double d [2], rmin[2], rmax[2];
		557
		558	for (int i = 0; i < 2; ++i)
256	}	559	{
257		560	double v;
258	GC gc = XCreateGC (dpy, pm, 0, 0);	561	v = mat_apply (matrix, i, 0, 0); rmin [i] = rmax [i] = v; d [i] = v;
259		562	v = mat_apply (matrix, i, w, 0); min_it (rmin [i], v); max_it (rmax [i], v);
260	ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;	563	v = mat_apply (matrix, i, 0, h); min_it (rmin [i], v); max_it (rmax [i], v);
261		564	v = mat_apply (matrix, i, w, h); min_it (rmin [i], v); max_it (rmax [i], v);
262	int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
263	int channels = gdk_pixbuf_get_n_channels (pixbuf);
264	unsigned char row = gdk_pixbuf_get_pixels (pixbuf) + src_y rowstride + src_x * channels;
265	char *line = ximage->data;
266
267	rgba c (0, 0, 0);
268
269	if (channels == 4 && alpha_mask == 0)
270	{	565	}
271	//pix_colors[Color_bg].get (c);
272	//TODO
273	c.r >>= 8;
274	c.g >>= 8;
275	c.b >>= 8;
276	}
277		566
278	for (int y = 0; y < height; y++)	567	int dx = floor (rmin [0]);
279	{	568	int dy = floor (rmin [1]);
280	for (int x = 0; x < width; x++)
281	{
282	unsigned char pixel = row + x channels;
283	uint32_t value;
284	unsigned char r, g, b, a;
285		569
286	if (channels == 4)	570	int new_width = ceil (rmax [0] - dx);
287	{	571	int new_height = ceil (rmax [1] - dy);
288	a = pixel[3];
289	r = (pixel[0] * a + c.r * (0xff - a)) / 0xff;
290	g = (pixel[1] * a + c.g * (0xff - a)) / 0xff;
291	b = (pixel[2] * a + c.b * (0xff - a)) / 0xff;
292	}
293	else
294	{
295	a = 0xff;
296	r = pixel[0];
297	g = pixel[1];
298	b = pixel[2];
299	}
300		572
301	value = ((r >> (8 - width_r)) << sh_r)	573	double inv[3][3];
302	\| ((g >> (8 - width_g)) << sh_g)	574	mat_invert (matrix, inv);
303	\| ((b >> (8 - width_b)) << sh_b)
304	\| ((a >> (8 - width_a)) << sh_a);
305		575
306	if (ximage->bits_per_pixel == 32)
307	((uint32_t *)line)[x] = value;
308	else
309	XPutPixel (ximage, x, y, value);
310	}
311
312	row += rowstride;
313	line += ximage->bytes_per_line;
314	}
315
316	XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);
317	XDestroyImage (ximage);
318	XFreeGC (dpy, gc);
319
320	return true;
321	}
322
323	rxvt_img *
324	rxvt_img::clone ()
325	{
326	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
327	Pixmap pm2 = XCreatePixmap (s->display->dpy, pm, w, h, format->depth);
328	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0);
329	XFreeGC (s->display->dpy, gc);
330	return new rxvt_img (s, format, w, h, pm2);
331	}
332
333	rxvt_img *
334	rxvt_img::transform (int new_width, int new_height, int repeat, double matrix[9])
335	{
336	rxvt_img *img = new rxvt_img (s, format, new_width, new_height);	576	rxvt_img *img = new rxvt_img (s, format, ox - dx - d [0], oy - dy - d [1], new_width, new_height, repeat);
		577	img->alloc ();
337		578
338	Display *dpy = s->display->dpy;	579	Display *dpy = s->display->dpy;
339	XRenderPictureAttributes pa;	580	Picture src = src_picture ();
340	pa.repeat = repeat;
341	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
342	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	581	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
343		582
344	XTransform xfrm;	583	XTransform xfrm;
345		584
346	for (int i = 0; i < 3; ++i)	585	for (int i = 0; i < 3; ++i)
347	for (int j = 0; j < 3; ++j)	586	for (int j = 0; j < 3; ++j)
348	xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);	587	xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
349		588
		589	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
350	XRenderSetPictureTransform (dpy, src, &xfrm);	590	XRenderSetPictureTransform (dpy, src, &xfrm);
351	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);	591	XRenderComposite (dpy, PictOpSrc, src, None, dst, dx, dy, 0, 0, 0, 0, new_width, new_height);
352		592
353	XRenderFreePicture (dpy, src);	593	XRenderFreePicture (dpy, src);
354	XRenderFreePicture (dpy, dst);	594	XRenderFreePicture (dpy, dst);
355		595
356	return img;	596	return img;
357	}	597	}
358		598
359	rxvt_img *	599	rxvt_img *
360	rxvt_img::scale (int new_width, int new_height)	600	rxvt_img::scale (int new_width, int new_height)
361	{	601	{
		602	if (w == new_width && h == new_height)
		603	return clone ();
		604
362	double matrix[9] = {	605	double matrix[3][3] = {
363	new_width / (double)w, 0, 0,	606	{ new_width / (double)w, 0, 0 },
364	0, new_height / (double)h, 0,	607	{ 0, new_height / (double)h, 0 },
365	0, 0, 1	608	{ 0, 0, 1 }
366	};	609	};
367		610
368	return transform (new_width, new_height, RepeatNormal, matrix);	611	int old_repeat_mode = repeat;
369	}	612	repeat = RepeatPad; // not right, but xrender can't properly scale it seems
370		613
		614	rxvt_img *img = transform (matrix);
		615
		616	repeat = old_repeat_mode;
		617	img->repeat = repeat;
		618
		619	return img;
		620	}
		621
371	rxvt_img *	622	rxvt_img *
		623	rxvt_img::rotate (int cx, int cy, double phi)
		624	{
		625	double s = sin (phi);
		626	double c = cos (phi);
		627
		628	double matrix[3][3] = {
		629	{ c, -s, cx - c * cx + s * cy },
		630	{ s, c, cy - s * cx - c * cy },
		631	{ 0, 0, 1 }
		632	//{ c, -s, 0 },
		633	//{ s, c, 0 },
		634	//{ 0, 0, 1 }
		635	};
		636
		637	//move (-cx, -cy);
		638	rxvt_img *img = transform (matrix);
		639	//move ( cx, cy);
		640	//img->move (cx, cy);
		641
		642	return img;
		643	}
		644
		645	rxvt_img *
372	rxvt_img::convert_to (XRenderPictFormat *new_format)	646	rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
373	{	647	{
		648	if (new_format == format)
		649	return clone ();
		650
374	rxvt_img *img = new rxvt_img (s, new_format, w, h);	651	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
		652	img->alloc ();
375		653
376	Display *dpy = s->display->dpy;	654	Display *dpy = s->display->dpy;
377	Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);	655	Picture src = src_picture ();
378	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);	656	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
		657	int op = PictOpSrc;
379		658
		659	if (format->direct.alphaMask && !new_format->direct.alphaMask)
		660	{
		661	// does it have to be that complicated
		662	XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
		663	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
		664
		665	op = PictOpOver;
		666	}
		667
380	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	668	XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
381		669
382	XRenderFreePicture (dpy, src);	670	XRenderFreePicture (dpy, src);
383	XRenderFreePicture (dpy, dst);	671	XRenderFreePicture (dpy, dst);
384		672
385	return img;	673	return img;
386	}	674	}
387		675
		676	rxvt_img *
		677	rxvt_img::blend (rxvt_img *img, double factor)
		678	{
		679	rxvt_img *img2 = clone ();
		680	Display *dpy = s->display->dpy;
		681	Picture src = img->src_picture ();
		682	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
		683	Picture mask = create_xrender_mask (dpy, img->pm, False, False);
		684
		685	XRenderColor mask_c;
		686
		687	mask_c.alpha = float_to_component (factor);
		688	mask_c.red =
		689	mask_c.green =
		690	mask_c.blue = 0;
		691	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
		692
		693	XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);
		694
		695	XRenderFreePicture (dpy, src);
		696	XRenderFreePicture (dpy, dst);
		697	XRenderFreePicture (dpy, mask);
		698
		699	return img2;
		700	}
		701
388	#endif	702	#endif
389		703

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Comparing rxvt-unicode/src/rxvtimg.C (file contents): Revision 1.14 by root, Mon Jun 4 15:53:12 2012 UTC vs. Revision 1.82 by root, Thu Jun 14 17:06:57 2012 UTC

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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.14 by root, Mon Jun 4 15:53:12 2012 UTC vs.
Revision 1.82 by root, Thu Jun 14 17:06:57 2012 UTC