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

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.21 by sf-exg, Tue Jun 5 14:59:44 2012 UTC vs.
Revision 1.81 by root, Tue Jun 12 19:00:57 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;
18	}	17	}
19		18
20	rxvt_img *	19	rxvt_img *
21	rxvt_img::new_from_root (rxvt_screen *s)	20	rxvt_img::new_from_root (rxvt_screen *s)
22	{	21	{
…		…
37	return 0;	36	return 0;
38		37
39	rxvt_img *img = new rxvt_img (	38	rxvt_img *img = new rxvt_img (
40	s,	39	s,
41	XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),	40	XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
		41	0,
		42	0,
42	root_pm_w,	43	root_pm_w,
43	root_pm_h,	44	root_pm_h
44	root_pixmap
45	);	45	);
46		46
47	img->shared = true;	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);
48		153
49	return img;	154	return img;
50	}	155	}
51		156
52	rxvt_img *	157	rxvt_img *
…		…
56	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);	161	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
57		162
58	if (!pb)	163	if (!pb)
59	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);	164	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
60		165
61	rxvt_img *img = new rxvt_img (	166	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		167
68	img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);	168	g_object_unref (pb);
69		169
		170	return img;
		171	}
		172
		173	# endif
		174
		175	void
		176	rxvt_img::destroy ()
		177	{
		178	if (--ref->cnt)
70	return img;	179	return;
		180
		181	if (pm && ref->ours)
		182	XFreePixmap (s->display->dpy, pm);
		183
		184	delete ref;
71	}	185	}
72		186
73	rxvt_img::~rxvt_img ()	187	rxvt_img::~rxvt_img ()
74	{	188	{
75	if (!shared)	189	destroy ();
76	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;
77	}	209	}
78		210
79	void	211	void
80	rxvt_img::unshare ()	212	rxvt_img::unshare ()
81	{	213	{
82	if (!shared)	214	if (ref->cnt == 1 && ref->ours)
83	return;	215	return;
84		216
85	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);
86		221
87	::swap (pm , img->pm);	222	destroy ();
88	::swap (shared, img->shared);
89		223
90	delete img;	224	pm = pm2;
		225	ref = new pixref (ref->w, ref->h);
91	}	226	}
92		227
93	void	228	void
94	rxvt_img::fill (const rxvt_color &c)	229	rxvt_img::fill (const rxvt_color &c)
95	{	230	{
96	XGCValues gcv;	231	rgba cc;
97	gcv.foreground = c;	232	c.get (cc);
98	GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);	233	XRenderColor rc = { cc.r, cc.g, cc.b, cc.a };
99	XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);	234
100	XFreeGC (s->display->dpy, gc);	235	Display *dpy = s->display->dpy;
		236	Picture src = src_picture ();
		237	XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h);
		238	XRenderFreePicture (dpy, src);
101	}	239	}
102		240
103	static void	241	static void
104	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)	242	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)
105	{	243	{
…		…
119		257
120	for (int i = 0; i < width; i++)	258	for (int i = 0; i < width; i++)
121	params[i+2] = XDoubleToFixed (kernel[i] / sum);	259	params[i+2] = XDoubleToFixed (kernel[i] / sum);
122	}	260	}
123		261
124	void	262	rxvt_img *
125	rxvt_img::blur (int rh, int rv)	263	rxvt_img::blur (int rh, int rv)
126	{	264	{
127	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))	265	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
128	return;	266	return clone ();
129		267
130	Display *dpy = s->display->dpy;	268	Display *dpy = s->display->dpy;
131	int size = max (rh, rv) * 2 + 1;	269	int size = max (rh, rv) * 2 + 1;
132	double kernel = (double )malloc (size * sizeof (double));	270	double kernel = (double )malloc (size * sizeof (double));
133	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));	271	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
		272	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
		273	img->alloc ();
134		274
135	XRenderPictureAttributes pa;	275	XRenderPictureAttributes pa;
136
137	pa.repeat = RepeatPad;	276	pa.repeat = RepeatPad;
138	Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa);	277	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
		278	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
		279
139	Pixmap tmp = XCreatePixmap (dpy, pm, w, h, format->depth);	280	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
140	Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa);	281	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
141	XFreePixmap (dpy, tmp);	282	XFreePixmap (dpy, tmp_pm);
142		283
143	if (kernel && params)	284	if (kernel && params)
144	{	285	{
145	size = rh * 2 + 1;	286	size = rh * 2 + 1;
146	get_gaussian_kernel (rh, size, kernel, params);	287	get_gaussian_kernel (rh, size, kernel, params);
147		288
148	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);	289	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
149	XRenderComposite (dpy,	290	XRenderComposite (dpy,
150	PictOpSrc,	291	PictOpSrc,
151	src,	292	src,
		293	None,
		294	tmp,
		295	0, 0,
		296	0, 0,
		297	0, 0,
		298	w, h);
		299
		300	size = rv * 2 + 1;
		301	get_gaussian_kernel (rv, size, kernel, params);
		302	::swap (params[0], params[1]);
		303
		304	XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
		305	XRenderComposite (dpy,
		306	PictOpSrc,
		307	tmp,
152	None,	308	None,
153	dst,	309	dst,
154	0, 0,	310	0, 0,
155	0, 0,	311	0, 0,
156	0, 0,	312	0, 0,
157	w, h);	313	w, h);
158
159	::swap (src, dst);
160
161	size = rv * 2 + 1;
162	get_gaussian_kernel (rv, size, kernel, params);
163	::swap (params[0], params[1]);
164
165	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
166	XRenderComposite (dpy,
167	PictOpSrc,
168	src,
169	None,
170	dst,
171	0, 0,
172	0, 0,
173	0, 0,
174	w, h);
175	}	314	}
176		315
177	free (kernel);	316	free (kernel);
178	free (params);	317	free (params);
		318
179	XRenderFreePicture (dpy, src);	319	XRenderFreePicture (dpy, src);
180	XRenderFreePicture (dpy, dst);	320	XRenderFreePicture (dpy, dst);
		321	XRenderFreePicture (dpy, tmp);
		322
		323	return img;
181	}	324	}
182		325
183	static Picture	326	static Picture
184	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)	327	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha)
185	{	328	{
186	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);	329	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
187		330
188	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);	331	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
189	XRenderPictureAttributes pa;	332	XRenderPictureAttributes pa;
190	pa.repeat = True;	333	pa.repeat = RepeatNormal;
		334	pa.component_alpha = component_alpha;
191	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);	335	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat \| CPComponentAlpha, &pa);
192		336
193	XFreePixmap (dpy, pixmap);	337	XFreePixmap (dpy, pixmap);
194		338
195	return mask;	339	return mask;
196	}	340	}
197		341
		342	static void
		343	extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
		344	{
		345	int32_t x = clamp (c, cl0, cl1);
		346	c -= x;
		347	xc = x;
		348	}
		349
		350	static bool
		351	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)
		352	{
		353	extract (cl0, cl1, r, xr);
		354	extract (cl0, cl1, g, xg);
		355	extract (cl0, cl1, b, xb);
		356	extract (cl0, cl1, a, xa);
		357
		358	return xr \| xg \| xb \| xa;
		359	}
		360
198	void	361	void
199	rxvt_img::brightness (double r, double g, double b, double a)	362	rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
200	{	363	{
		364	unshare ();
		365
201	Display *dpy = s->display->dpy;	366	Display *dpy = s->display->dpy;
202	Picture src = create_xrender_mask (dpy, pm, True);
203	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	367	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
204		368
		369	// loop should not be needed for brightness, as only -1..1 makes sense
		370	//while (r \| g \| b \| a)
		371	{
		372	unsigned short xr, xg, xb, xa;
205	XRenderColor mask_c;	373	XRenderColor mask_c;
206	mask_c.red = float_to_component (r);	374
207	mask_c.green = float_to_component (g);	375	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
208	mask_c.blue = float_to_component (b);
209	mask_c.alpha = float_to_component (a);
210	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	376	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
211		377
212	XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	378	if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
		379	{
		380	XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
		381	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		382	mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
		383	mask_c.green = -mask_c.green;
		384	mask_c.blue = -mask_c.blue;
		385	mask_c.alpha = -mask_c.alpha;
		386	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
		387	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		388	}
		389	}
		390
		391	XRenderFreePicture (dpy, dst);
213	}	392	}
214		393
215	void	394	void
216	rxvt_img::contrast (double r, double g, double b, double a)	395	rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
217	{	396	{
218	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))	397	if (r < 0 \|\| g < 0 \|\| b < 0 \|\| a < 0)
219	return;	398	rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
220		399
		400	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
		401	img->alloc ();
		402
		403	{
		404	rxvt_color empty;
		405	empty.set (s, rgba (0, 0, 0, 0));
		406	img->fill (empty);
		407	}
		408
		409	// premultiply (yeah, these are not exact, sue me or fix it)
		410	r = (r * (a >> 8)) >> 8;
		411	g = (g * (a >> 8)) >> 8;
		412	b = (b * (a >> 8)) >> 8;
		413
221	Display *dpy = s->display->dpy;	414	Display *dpy = s->display->dpy;
222	Picture src = create_xrender_mask (dpy, pm, True);	415
		416	Picture src = src_picture ();
223	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	417	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
		418	Picture mul = create_xrender_mask (dpy, pm, True, True);
224		419
		420	//TODO: this operator does not yet implement some useful contrast
		421	while (r \| g \| b \| a)
		422	{
		423	unsigned short xr, xg, xb, xa;
225	XRenderColor mask_c;	424	XRenderColor mask_c;
226	mask_c.red = float_to_component (r);
227	mask_c.green = float_to_component (g);
228	mask_c.blue = float_to_component (b);
229	mask_c.alpha = float_to_component (a);
230	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
231		425
232	XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	426	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
233	}
234
235	bool
236	rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
237	{
238	Display *dpy = s->display->dpy;
239
240	if (s->visual->c_class != TrueColor)
241	return false;
242
243	uint32_t red_mask, green_mask, blue_mask, alpha_mask;
244
245	red_mask = (uint32_t)format->direct.redMask << format->direct.red;
246	green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
247	blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue;
248	alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
249
250	int width_r = ecb_popcount32 (red_mask);
251	int width_g = ecb_popcount32 (green_mask);
252	int width_b = ecb_popcount32 (blue_mask);
253	int width_a = ecb_popcount32 (alpha_mask);
254
255	if (width_r > 8 \|\| width_g > 8 \|\| width_b > 8 \|\| width_a > 8)
256	return false;
257
258	int sh_r = ecb_ctz32 (red_mask);
259	int sh_g = ecb_ctz32 (green_mask);
260	int sh_b = ecb_ctz32 (blue_mask);
261	int sh_a = ecb_ctz32 (alpha_mask);
262
263	if (width > 32767 \|\| height > 32767)
264	return false;
265
266	XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
267	width, height, 32, 0);
268	if (!ximage)
269	return false;
270
271	if (height > INT_MAX / ximage->bytes_per_line
272	\|\| !(ximage->data = (char )malloc (height ximage->bytes_per_line)))
273	{
274	XDestroyImage (ximage);
275	return false;
276	}
277
278	GC gc = XCreateGC (dpy, pm, 0, 0);
279
280	ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
281
282	int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
283	int channels = gdk_pixbuf_get_n_channels (pixbuf);
284	unsigned char row = gdk_pixbuf_get_pixels (pixbuf) + src_y rowstride + src_x * channels;
285	char *line = ximage->data;
286
287	rgba c (0, 0, 0);
288
289	if (channels == 4 && alpha_mask == 0)
290	{
291	//pix_colors[Color_bg].get (c);
292	//TODO
293	c.r = 0xffff; c.g = 0xc0c0; c.b = 0xcbcb;//D
294	c.r >>= 8;
295	c.g >>= 8;
296	c.b >>= 8;
297	}
298
299	for (int y = 0; y < height; y++)
300	{
301	for (int x = 0; x < width; x++)
302	{	427	{
303	unsigned char pixel = row + x channels;	428	XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1);
304	uint32_t value;	429	XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h);
305	unsigned char r, g, b, a;
306
307	if (channels == 4)
308	{
309	a = pixel[3];
310	r = (pixel[0] * a + c.r * (0xff - a)) / 0xff;
311	g = (pixel[1] * a + c.g * (0xff - a)) / 0xff;
312	b = (pixel[2] * a + c.b * (0xff - 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	}	430	}
332
333	row += rowstride;
334	line += ximage->bytes_per_line;
335	}	431	}
336		432
337	XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);	433	XRenderFreePicture (dpy, mul);
338	XDestroyImage (ximage);	434	XRenderFreePicture (dpy, dst);
339	XFreeGC (dpy, gc);	435	XRenderFreePicture (dpy, src);
340		436
341	return true;	437	::swap (img->ref, ref);
		438	::swap (img->pm , pm );
		439
		440	delete img;
342	}	441	}
343		442
344	rxvt_img *	443	rxvt_img *
345	rxvt_img::clone ()	444	rxvt_img::clone ()
346	{	445	{
347	rxvt_img *img = new rxvt_img (s, format, w, h);	446	return new rxvt_img (*this);
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
353	return img;
354	}	447	}
355		448
356	rxvt_img *	449	static XRenderPictFormat *
357	rxvt_img::sub_rect (int x, int y, int width, int height, int repeat)	450	find_alpha_format_for (Display dpy, XRenderPictFormat format)
358	{	451	{
359	rxvt_img *img = new rxvt_img (s, format, width, height);	452	if (format->direct.alphaMask)
		453	return format; // already has alpha
360		454
		455	// try to find a suitable alpha format, one bit alpha is enough for our purposes
		456	if (format->type == PictTypeDirect)
		457	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
		458	if (f->direct.alphaMask
		459	&& f->type == PictTypeDirect
		460	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
		461	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
		462	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
		463	return f;
		464
		465	// should be a very good fallback
		466	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
		467	}
		468
		469	rxvt_img *
		470	rxvt_img::reify ()
		471	{
		472	if (x == 0 && y == 0 && w == ref->w && h == ref->h)
		473	return clone ();
		474
361	Display *dpy = s->display->dpy;	475	Display *dpy = s->display->dpy;
362	XRenderPictureAttributes pa;	476
363	pa.repeat = repeat;	477	// add an alpha channel if...
364	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);	478	bool alpha = !format->direct.alphaMask // pixmap has none yet
		479	&& (x \|\| y) // we need one because of non-zero offset
		480	&& repeat == RepeatNone; // and we have no good pixels to fill with
		481
		482	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
		483	img->alloc ();
		484
		485	Picture src = src_picture ();
365	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	486	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
366		487
		488	if (alpha)
		489	{
		490	XRenderColor rc = { 0, 0, 0, 0 };
		491	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
		492	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h);
		493	}
		494	else
367	XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, width, height);	495	XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);
368		496
369	XRenderFreePicture (dpy, src);	497	XRenderFreePicture (dpy, src);
370	XRenderFreePicture (dpy, dst);	498	XRenderFreePicture (dpy, dst);
371		499
372	return img;	500	return img;
373	}	501	}
374		502
375	rxvt_img *	503	rxvt_img *
376	rxvt_img::transform (int new_width, int new_height, double matrix[9], int repeat)	504	rxvt_img::sub_rect (int x, int y, int width, int height)
377	{	505	{
		506	rxvt_img *img = clone ();
		507
		508	img->x += x;
		509	img->y += y;
		510
		511	if (w != width \|\| h != height)
		512	{
		513	img->w = width;
		514	img->h = height;
		515
		516	rxvt_img *img2 = img->reify ();
		517	delete img;
		518	img = img2;
		519	}
		520
		521	return img;
		522	}
		523
		524	static void
		525	mat_invert (double mat[3][3], double (&inv)[3][3])
		526	{
		527	double s0 = mat [2][2] * mat [1][1] - mat [2][1] * mat [1][2];
		528	double s1 = mat [2][1] * mat [0][2] - mat [2][2] * mat [0][1];
		529	double s2 = mat [1][2] * mat [0][1] - mat [1][1] * mat [0][2];
		530
		531	double invdet = 1. / (mat [0][0] * s0 + mat [1][0] * s1 + mat [2][0] * s2);
		532
		533	inv [0][0] = invdet * s0;
		534	inv [0][1] = invdet * s1;
		535	inv [0][2] = invdet * s2;
		536
		537	inv [1][0] = invdet * (mat [2][0] * mat [1][2] - mat [2][2] * mat [1][0]);
		538	inv [1][1] = invdet * (mat [2][2] * mat [0][0] - mat [2][0] * mat [0][2]);
		539	inv [1][2] = invdet * (mat [1][0] * mat [0][2] - mat [1][2] * mat [0][0]);
		540
		541	inv [2][0] = invdet * (mat [2][1] * mat [1][0] - mat [2][0] * mat [1][1]);
		542	inv [2][1] = invdet * (mat [2][0] * mat [0][1] - mat [2][1] * mat [0][0]);
		543	inv [2][2] = invdet * (mat [1][1] * mat [0][0] - mat [1][0] * mat [0][1]);
		544	}
		545
		546	static double
		547	mat_apply (double mat[3][3], int i, double x, double y)
		548	{
		549	double v = mat [i][0] * x + mat [i][1] * y + mat [i][2];
		550	double w = mat [2][0] * x + mat [2][1] * y + mat [2][2];
		551
		552	return v * (1. / w);
		553	}
		554
		555	rxvt_img *
		556	rxvt_img::transform (double matrix[3][3])
		557	{
		558	// find new offset
		559	int ox = mat_apply (matrix, 0, x, y);
		560	int oy = mat_apply (matrix, 1, x, y);
		561
		562	// calculate new pixel bounding box coordinates
		563	double d [2], rmin[2], rmax[2];
		564
		565	for (int i = 0; i < 2; ++i)
		566	{
		567	double v;
		568	v = mat_apply (matrix, i, 0, 0); rmin [i] = rmax [i] = v; d [i] = v;
		569	v = mat_apply (matrix, i, w, 0); min_it (rmin [i], v); max_it (rmax [i], v);
		570	v = mat_apply (matrix, i, 0, h); min_it (rmin [i], v); max_it (rmax [i], v);
		571	v = mat_apply (matrix, i, w, h); min_it (rmin [i], v); max_it (rmax [i], v);
		572	}
		573
		574	int dx = floor (rmin [0]);
		575	int dy = floor (rmin [1]);
		576
		577	int new_width = ceil (rmax [0] - dx);
		578	int new_height = ceil (rmax [1] - dy);
		579
		580	double inv[3][3];
		581	mat_invert (matrix, inv);
		582
378	rxvt_img *img = new rxvt_img (s, format, new_width, new_height);	583	rxvt_img *img = new rxvt_img (s, format, ox - dx - d [0], oy - dy - d [1], new_width, new_height, repeat);
		584	img->alloc ();
379		585
380	Display *dpy = s->display->dpy;	586	Display *dpy = s->display->dpy;
381	XRenderPictureAttributes pa;	587	Picture src = src_picture ();
382	pa.repeat = repeat;
383	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
384	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	588	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
385		589
386	XTransform xfrm;	590	XTransform xfrm;
387		591
388	for (int i = 0; i < 3; ++i)	592	for (int i = 0; i < 3; ++i)
389	for (int j = 0; j < 3; ++j)	593	for (int j = 0; j < 3; ++j)
390	xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);	594	xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
391		595
392	XRenderSetPictureFilter (dpy, src, "good", 0, 0);	596	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
393	XRenderSetPictureTransform (dpy, src, &xfrm);	597	XRenderSetPictureTransform (dpy, src, &xfrm);
394	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);	598	XRenderComposite (dpy, PictOpSrc, src, None, dst, dx, dy, 0, 0, 0, 0, new_width, new_height);
395		599
396	XRenderFreePicture (dpy, src);	600	XRenderFreePicture (dpy, src);
397	XRenderFreePicture (dpy, dst);	601	XRenderFreePicture (dpy, dst);
398		602
399	return img;	603	return img;
400	}	604	}
401		605
402	rxvt_img *	606	rxvt_img *
403	rxvt_img::scale (int new_width, int new_height)	607	rxvt_img::scale (int new_width, int new_height)
404	{	608	{
		609	if (w == new_width && h == new_height)
		610	return clone ();
		611
405	double matrix[9] = {	612	double matrix[3][3] = {
406	w / (double)new_width, 0, 0,	613	{ new_width / (double)w, 0, 0 },
407	0, h / (double)new_height, 0,	614	{ 0, new_height / (double)h, 0 },
408	0, 0, 1	615	{ 0, 0, 1 }
409	};	616	};
410		617
411	return transform (new_width, new_height, matrix);	618	int old_repeat_mode = repeat;
412	}	619	repeat = RepeatPad; // not right, but xrender can't properly scale it seems
413		620
		621	rxvt_img *img = transform (matrix);
		622
		623	repeat = old_repeat_mode;
		624	img->repeat = repeat;
		625
		626	return img;
		627	}
		628
414	rxvt_img *	629	rxvt_img *
415	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi, int repeat)	630	rxvt_img::rotate (int cx, int cy, double phi)
416	{	631	{
417	double s = sin (phi);	632	double s = sin (phi);
418	double c = cos (phi);	633	double c = cos (phi);
419		634
420	double matrix[9] = {	635	double matrix[3][3] = {
421	c, -s, -c * x + s * y + x,	636	{ c, -s, cx - c * cx + s * cy },
422	s, c, -s * x - c * y + y,	637	{ s, c, cy - s * cx - c * cy },
423	0, 0, 1	638	{ 0, 0, 1 }
		639	//{ c, -s, 0 },
		640	//{ s, c, 0 },
		641	//{ 0, 0, 1 }
424	};	642	};
425		643
426	return transform (new_width, new_height, matrix, repeat);	644	//move (-cx, -cy);
427	}	645	rxvt_img *img = transform (matrix);
		646	//move ( cx, cy);
		647	//img->move (cx, cy);
428		648
		649	return img;
		650	}
		651
429	rxvt_img *	652	rxvt_img *
430	rxvt_img::convert_to (XRenderPictFormat *new_format)	653	rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg)
431	{	654	{
		655	if (new_format == format)
		656	return clone ();
		657
432	rxvt_img *img = new rxvt_img (s, new_format, w, h);	658	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
		659	img->alloc ();
433		660
434	Display *dpy = s->display->dpy;	661	Display *dpy = s->display->dpy;
435	Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);	662	Picture src = src_picture ();
436	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);	663	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
		664	int op = PictOpSrc;
437		665
		666	if (format->direct.alphaMask && !new_format->direct.alphaMask)
		667	{
		668	// does it have to be that complicated
		669	rgba c;
		670	bg.get (c);
		671
		672	XRenderColor rc = { c.r, c.g, c.b, 0xffff };
		673	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
		674
		675	op = PictOpOver;
		676	}
		677
438	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	678	XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
439		679
440	XRenderFreePicture (dpy, src);	680	XRenderFreePicture (dpy, src);
441	XRenderFreePicture (dpy, dst);	681	XRenderFreePicture (dpy, dst);
442		682
443	return img;	683	return img;
444	}	684	}
445		685
		686	rxvt_img *
		687	rxvt_img::blend (rxvt_img *img, double factor)
		688	{
		689	rxvt_img *img2 = clone ();
		690	Display *dpy = s->display->dpy;
		691	Picture src = img->src_picture ();
		692	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
		693	Picture mask = create_xrender_mask (dpy, img->pm, False, False);
		694
		695	XRenderColor mask_c;
		696
		697	mask_c.alpha = float_to_component (factor);
		698	mask_c.red =
		699	mask_c.green =
		700	mask_c.blue = 0;
		701	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
		702
		703	XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);
		704
		705	XRenderFreePicture (dpy, src);
		706	XRenderFreePicture (dpy, dst);
		707	XRenderFreePicture (dpy, mask);
		708
		709	return img2;
		710	}
		711
446	#endif	712	#endif
447		713

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Comparing rxvt-unicode/src/rxvtimg.C (file contents): Revision 1.21 by sf-exg, Tue Jun 5 14:59:44 2012 UTC vs. Revision 1.81 by root, Tue Jun 12 19:00:57 2012 UTC

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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.21 by sf-exg, Tue Jun 5 14:59:44 2012 UTC vs.
Revision 1.81 by root, Tue Jun 12 19:00:57 2012 UTC