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

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.54 by root, Thu Jun 7 20:24:39 2012 UTC vs.
Revision 1.84 by root, Thu Jun 14 18:19:11 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	static XRenderPictFormat *
		8	find_alpha_format_for (Display dpy, XRenderPictFormat format)
		9	{
		10	if (format->direct.alphaMask)
		11	return format; // already has alpha
		12
		13	// try to find a suitable alpha format, one bit alpha is enough for our purposes
		14	if (format->type == PictTypeDirect)
		15	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
		16	if (f->direct.alphaMask
		17	&& f->type == PictTypeDirect
		18	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
		19	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
		20	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
		21	return f;
		22
		23	// should be a very good fallback
		24	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
		25	}
		26
7	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int x, int y, int width, int height, int repeat)	27	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),	28	: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
9	pm(0), ref(0)	29	pm(0), ref(0)
10	{	30	{
11	}	31	}
…		…
13	rxvt_img::rxvt_img (const rxvt_img &img)	33	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)	34	: 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	{	35	{
16	++ref->cnt;	36	++ref->cnt;
17	}	37	}
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		38
26	rxvt_img *	39	rxvt_img *
27	rxvt_img::new_from_root (rxvt_screen *s)	40	rxvt_img::new_from_root (rxvt_screen *s)
28	{	41	{
29	Display *dpy = s->display->dpy;	42	Display *dpy = s->display->dpy;
…		…
56	img->ref->ours = false;	69	img->ref->ours = false;
57		70
58	return img;	71	return img;
59	}	72	}
60		73
		74	# if HAVE_PIXBUF
		75
61	rxvt_img *	76	rxvt_img *
62	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)	77	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)
63	{	78	{
64	Display *dpy = s->display->dpy;	79	Display *dpy = s->display->dpy;
65		80
…		…
69	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks	84	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks
70	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");	85	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
71		86
72	// since we require rgb24/argb32 formats from xrender we assume	87	// since we require rgb24/argb32 formats from xrender we assume
73	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender	88	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender
74	int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24;
75		89
76	int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;	90	int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
77		91
78	XImage xi;	92	XImage xi;
79		93
80	xi.width = width;	94	xi.width = width;
81	xi.height = height;	95	xi.height = height;
82	xi.xoffset = 0;	96	xi.xoffset = 0;
83	xi.format = ZPixmap;	97	xi.format = ZPixmap;
84	xi.byte_order = ImageByteOrder (dpy);	98	xi.byte_order = ImageByteOrder (dpy);
85	xi.bitmap_unit = 32; //XY only, unused	99	xi.bitmap_unit = 0; //XY only, unused
86	xi.bitmap_bit_order = LSBFirst; //XY only, unused	100	xi.bitmap_bit_order = 0; //XY only, unused
87	xi.bitmap_pad = BitmapPad (dpy);	101	xi.bitmap_pad = BitmapPad (dpy);
88	xi.depth = depth;	102	xi.depth = 32;
89	xi.bytes_per_line = 0;	103	xi.bytes_per_line = 0;
90	xi.bits_per_pixel = 32; //Z only	104	xi.bits_per_pixel = 32; //Z only
91	xi.red_mask = 0x00000000; //Z only, unused	105	xi.red_mask = 0x00000000; //Z only, unused
92	xi.green_mask = 0x00000000; //Z only, unused	106	xi.green_mask = 0x00000000; //Z only, unused
93	xi.blue_mask = 0x00000000; //Z only, unused	107	xi.blue_mask = 0x00000000; //Z only, unused
…		…
102	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");	116	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
103		117
104	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);	118	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);
105		119
106	int rowstride = gdk_pixbuf_get_rowstride (pb);	120	int rowstride = gdk_pixbuf_get_rowstride (pb);
107		121	bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb);
108	assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb));
109	unsigned char *row = gdk_pixbuf_get_pixels (pb);	122	unsigned char *row = gdk_pixbuf_get_pixels (pb);
		123
110	char *line = xi.data;	124	char *line = xi.data;
111		125
112	for (int y = 0; y < height; y++)	126	for (int y = 0; y < height; y++)
113	{	127	{
114	unsigned char *src = row;	128	unsigned char *src = row;
115	uint32_t dst = (uint32_t )line;	129	uint32_t dst = (uint32_t )line;
116		130
117	if (depth == 24)	131	if (!pb_has_alpha)
118	for (int x = 0; x < width; x++)	132	for (int x = 0; x < width; x++)
119	{	133	{
120	uint8_t r = *src++;	134	uint8_t r = *src++;
121	uint8_t g = *src++;	135	uint8_t g = *src++;
122	uint8_t b = *src++;	136	uint8_t b = *src++;
123		137
124	uint32_t v = (r << 16) \| (g << 8) \| b;	138	uint32_t v = (255 << 24) \| (r << 16) \| (g << 8) \| b;
125		139
126	if (ecb_big_endian ())	140	if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
127	v = ecb_bswap32 (v);
128
129	if (byte_order_mismatch)
130	v = ecb_bswap32 (v);	141	v = ecb_bswap32 (v);
131		142
132	*dst++ = v;	143	*dst++ = v;
133	}	144	}
134	else	145	else
135	for (int x = 0; x < width; x++)	146	for (int x = 0; x < width; x++)
136	{	147	{
137	uint32_t v = (uint32_t )src; src += 4;	148	uint32_t v = (uint32_t )src; src += 4;
138		149
139	if (ecb_little_endian ())	150	if (ecb_big_endian ())
140	v = ecb_bswap32 (v);	151	v = ecb_bswap32 (v);
141		152
142	v = ecb_rotr32 (v, 8);	153	v = ecb_rotl32 (v, 8); // abgr to bgra
143		154
144	if (byte_order_mismatch)	155	if (!byte_order_mismatch)
145	v = ecb_bswap32 (v);	156	v = ecb_bswap32 (v);
146		157
147	*dst++ = v;	158	*dst++ = v;
148	}	159	}
149		160
150	row += rowstride;	161	row += rowstride;
151	line += xi.bytes_per_line;	162	line += xi.bytes_per_line;
152	}	163	}
153		164
154	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height);	165	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
155	img->alloc ();	166	img->alloc ();
156		167
157	GC gc = XCreateGC (dpy, img->pm, 0, 0);	168	GC gc = XCreateGC (dpy, img->pm, 0, 0);
158	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);	169	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
159	XFreeGC (dpy, gc);	170	XFreeGC (dpy, gc);
…		…
177	g_object_unref (pb);	188	g_object_unref (pb);
178		189
179	return img;	190	return img;
180	}	191	}
181		192
		193	# endif
		194
182	void	195	void
183	rxvt_img::destroy ()	196	rxvt_img::destroy ()
184	{	197	{
185	if (--ref->cnt)	198	if (--ref->cnt)
186	return;	199	return;
…		…
219	rxvt_img::unshare ()	232	rxvt_img::unshare ()
220	{	233	{
221	if (ref->cnt == 1 && ref->ours)	234	if (ref->cnt == 1 && ref->ours)
222	return;	235	return;
223		236
224	//TODO: maybe should reify instead
225	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);	237	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
226	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);	238	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
227	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);	239	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
228	XFreeGC (s->display->dpy, gc);	240	XFreeGC (s->display->dpy, gc);
229		241
…		…
232	pm = pm2;	244	pm = pm2;
233	ref = new pixref (ref->w, ref->h);	245	ref = new pixref (ref->w, ref->h);
234	}	246	}
235		247
236	void	248	void
237	rxvt_img::fill (const rxvt_color &c)	249	rxvt_img::fill (const rgba &c)
238	{	250	{
239	XGCValues gcv;	251	XRenderColor rc = { c.r, c.g, c.b, c.a };
240	gcv.foreground = c;	252
241	GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);	253	Display *dpy = s->display->dpy;
242	XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);	254	Picture src = src_picture ();
243	XFreeGC (s->display->dpy, gc);	255	XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h);
		256	XRenderFreePicture (dpy, src);
		257	}
		258
		259	void
		260	rxvt_img::add_alpha ()
		261	{
		262	if (format->direct.alphaMask)
		263	return;
		264
		265	Display *dpy = s->display->dpy;
		266
		267	rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat);
		268	img->alloc ();
		269
		270	Picture src = src_picture ();
		271	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
		272
		273	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
		274
		275	XRenderFreePicture (dpy, src);
		276	XRenderFreePicture (dpy, dst);
		277
		278	::swap (img->ref, ref);
		279	::swap (img->pm , pm );
		280
		281	delete img;
244	}	282	}
245		283
246	static void	284	static void
247	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)	285	get_gaussian_kernel (int radius, int width, rxvt_img::nv kernel, XFixed params)
248	{	286	{
249	double sigma = radius / 2.0;	287	rxvt_img::nv sigma = radius / 2.0;
250	double scale = sqrt (2.0 * M_PI) * sigma;	288	rxvt_img::nv scale = sqrt (2.0 * M_PI) * sigma;
251	double sum = 0.0;	289	rxvt_img::nv sum = 0.0;
252		290
253	for (int i = 0; i < width; i++)	291	for (int i = 0; i < width; i++)
254	{	292	{
255	double x = i - width / 2;	293	rxvt_img::nv x = i - width / 2;
256	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;	294	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
257	sum += kernel[i];	295	sum += kernel[i];
258	}	296	}
259		297
260	params[0] = XDoubleToFixed (width);	298	params[0] = XDoubleToFixed (width);
…		…
270	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))	308	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
271	return clone ();	309	return clone ();
272		310
273	Display *dpy = s->display->dpy;	311	Display *dpy = s->display->dpy;
274	int size = max (rh, rv) * 2 + 1;	312	int size = max (rh, rv) * 2 + 1;
275	double kernel = (double )malloc (size * sizeof (double));	313	nv kernel = (nv )malloc (size * sizeof (nv));
276	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));	314	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
277	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);	315	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
278	img->alloc ();	316	img->alloc ();
279		317
280	Picture src = src_picture ();
281
282	XRenderPictureAttributes pa;	318	XRenderPictureAttributes pa;
283	pa.repeat = RepeatPad;	319	pa.repeat = RepeatPad;
284	Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);	320	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
		321	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
285		322
286	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);	323	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
287	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);	324	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
288	XFreePixmap (dpy, tmp_pm);	325	XFreePixmap (dpy, tmp_pm);
289		326
…		…
305		342
306	size = rv * 2 + 1;	343	size = rv * 2 + 1;
307	get_gaussian_kernel (rv, size, kernel, params);	344	get_gaussian_kernel (rv, size, kernel, params);
308	::swap (params[0], params[1]);	345	::swap (params[0], params[1]);
309		346
310	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);	347	XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
311	XRenderComposite (dpy,	348	XRenderComposite (dpy,
312	PictOpSrc,	349	PictOpSrc,
313	tmp,	350	tmp,
314	None,	351	None,
315	dst,	352	dst,
…		…
319	w, h);	356	w, h);
320	}	357	}
321		358
322	free (kernel);	359	free (kernel);
323	free (params);	360	free (params);
		361
324	XRenderFreePicture (dpy, src);	362	XRenderFreePicture (dpy, src);
325	XRenderFreePicture (dpy, dst);	363	XRenderFreePicture (dpy, dst);
326	XRenderFreePicture (dpy, tmp);	364	XRenderFreePicture (dpy, tmp);
327		365
328	return img;	366	return img;
329	}	367	}
330		368
331	static Picture	369	static Picture
332	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)	370	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha)
333	{	371	{
334	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);	372	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
335		373
336	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);	374	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
337	XRenderPictureAttributes pa;	375	XRenderPictureAttributes pa;
338	pa.repeat = True;	376	pa.repeat = RepeatNormal;
		377	pa.component_alpha = component_alpha;
339	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);	378	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat \| CPComponentAlpha, &pa);
340		379
341	XFreePixmap (dpy, pixmap);	380	XFreePixmap (dpy, pixmap);
342		381
343	return mask;	382	return mask;
344	}	383	}
345		384
		385	static void
		386	extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
		387	{
		388	int32_t x = clamp (c, cl0, cl1);
		389	c -= x;
		390	xc = x;
		391	}
		392
		393	static bool
		394	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)
		395	{
		396	extract (cl0, cl1, r, xr);
		397	extract (cl0, cl1, g, xg);
		398	extract (cl0, cl1, b, xb);
		399	extract (cl0, cl1, a, xa);
		400
		401	return xr \| xg \| xb \| xa;
		402	}
		403
346	void	404	void
347	rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)	405	rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
348	{	406	{
		407	unshare ();
		408
349	Display *dpy = s->display->dpy;	409	Display *dpy = s->display->dpy;
350	Picture src = create_xrender_mask (dpy, pm, True);
351	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	410	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
352		411
		412	// loop should not be needed for brightness, as only -1..1 makes sense
		413	//while (r \| g \| b \| a)
		414	{
		415	unsigned short xr, xg, xb, xa;
353	XRenderColor mask_c;	416	XRenderColor mask_c;
354	mask_c.red = r;	417
355	mask_c.green = g;	418	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
356	mask_c.blue = b;	419	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
357	mask_c.alpha = a;	420
		421	if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
		422	{
		423	XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
		424	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		425	mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
		426	mask_c.green = -mask_c.green;
		427	mask_c.blue = -mask_c.blue;
		428	mask_c.alpha = -mask_c.alpha;
		429	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
		430	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		431	}
		432	}
		433
		434	XRenderFreePicture (dpy, dst);
		435	}
		436
		437	void
		438	rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
		439	{
		440	if (r < 0 \|\| g < 0 \|\| b < 0 \|\| a < 0)
		441	rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
		442
		443	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
		444	img->alloc ();
		445	img->fill (rgba (0, 0, 0, 0));
		446
		447	// premultiply (yeah, these are not exact, sue me or fix it)
		448	r = (r * (a >> 8)) >> 8;
		449	g = (g * (a >> 8)) >> 8;
		450	b = (b * (a >> 8)) >> 8;
		451
		452	Display *dpy = s->display->dpy;
		453
		454	Picture src = src_picture ();
		455	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
		456	Picture mul = create_xrender_mask (dpy, pm, True, True);
		457
		458	//TODO: this operator does not yet implement some useful contrast
		459	while (r \| g \| b \| a)
		460	{
		461	unsigned short xr, xg, xb, xa;
		462	XRenderColor mask_c;
		463
		464	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
		465	{
358	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	466	XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1);
359
360	XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	467	XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h);
		468	}
		469	}
361		470
		471	XRenderFreePicture (dpy, mul);
		472	XRenderFreePicture (dpy, dst);
362	XRenderFreePicture (dpy, src);	473	XRenderFreePicture (dpy, src);
363	XRenderFreePicture (dpy, dst);
364	}
365		474
366	void	475	::swap (img->ref, ref);
367	rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)	476	::swap (img->pm , pm );
368	{
369	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
370	return;
371		477
372	Display *dpy = s->display->dpy;	478	delete img;
373	Picture src = create_xrender_mask (dpy, pm, True);
374	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
375
376	XRenderColor mask_c;
377	mask_c.red = r;
378	mask_c.green = g;
379	mask_c.blue = b;
380	mask_c.alpha = a;
381	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
382
383	XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
384
385	XRenderFreePicture (dpy, src);
386	XRenderFreePicture (dpy, dst);
387	}	479	}
388		480
389	rxvt_img *	481	rxvt_img *
390	rxvt_img::clone ()	482	rxvt_img::clone ()
391	{	483	{
392	return new rxvt_img (*this);	484	return new rxvt_img (*this);
393	}
394
395	static XRenderPictFormat *
396	find_alpha_format_for (Display dpy, XRenderPictFormat format)
397	{
398	if (format->direct.alphaMask)
399	return format; // already has alpha
400
401	// try to find a suitable alpha format, one bit alpha is enough for our purposes
402	if (format->type == PictTypeDirect)
403	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
404	if (f->direct.alphaMask
405	&& f->type == PictTypeDirect
406	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
407	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
408	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
409	return f;
410
411	// should be a very good fallback
412	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
413	}	485	}
414		486
415	rxvt_img *	487	rxvt_img *
416	rxvt_img::reify ()	488	rxvt_img::reify ()
417	{	489	{
418	if (x == 0 && y == 0 && w == ref->w && h == ref->h)	490	if (x == 0 && y == 0 && w == ref->w && h == ref->h)
419	return clone ();	491	return clone ();
420		492
421	Display *dpy = s->display->dpy;	493	Display *dpy = s->display->dpy;
422		494
		495	// add an alpha channel if...
423	bool alpha = !format->direct.alphaMask	496	bool alpha = !format->direct.alphaMask // pixmap has none yet
424	&& (x \|\| y)	497	&& (x \|\| y) // we need one because of non-zero offset
425	&& repeat == RepeatNone;	498	&& repeat == RepeatNone; // and we have no good pixels to fill with
426		499
427	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);	500	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
428	img->alloc ();	501	img->alloc ();
429		502
430	Picture src = src_picture ();	503	Picture src = src_picture ();
…		…
464	}	537	}
465		538
466	return img;	539	return img;
467	}	540	}
468		541
469	rxvt_img *	542	static void
470	rxvt_img::transform (int new_width, int new_height, double matrix[9])	543	mat_invert (rxvt_img::nv mat[3][3], rxvt_img::nv (&inv)[3][3])
471	{	544	{
		545	rxvt_img::nv s0 = mat [2][2] * mat [1][1] - mat [2][1] * mat [1][2];
		546	rxvt_img::nv s1 = mat [2][1] * mat [0][2] - mat [2][2] * mat [0][1];
		547	rxvt_img::nv s2 = mat [1][2] * mat [0][1] - mat [1][1] * mat [0][2];
		548
		549	rxvt_img::nv invdet = 1. / (mat [0][0] * s0 + mat [1][0] * s1 + mat [2][0] * s2);
		550
		551	inv [0][0] = invdet * s0;
		552	inv [0][1] = invdet * s1;
		553	inv [0][2] = invdet * s2;
		554
		555	inv [1][0] = invdet * (mat [2][0] * mat [1][2] - mat [2][2] * mat [1][0]);
		556	inv [1][1] = invdet * (mat [2][2] * mat [0][0] - mat [2][0] * mat [0][2]);
		557	inv [1][2] = invdet * (mat [1][0] * mat [0][2] - mat [1][2] * mat [0][0]);
		558
		559	inv [2][0] = invdet * (mat [2][1] * mat [1][0] - mat [2][0] * mat [1][1]);
		560	inv [2][1] = invdet * (mat [2][0] * mat [0][1] - mat [2][1] * mat [0][0]);
		561	inv [2][2] = invdet * (mat [1][1] * mat [0][0] - mat [1][0] * mat [0][1]);
		562	}
		563
		564	static rxvt_img::nv
		565	mat_apply (rxvt_img::nv mat[3][3], int i, rxvt_img::nv x, rxvt_img::nv y)
		566	{
		567	rxvt_img::nv v = mat [i][0] * x + mat [i][1] * y + mat [i][2];
		568	rxvt_img::nv w = mat [2][0] * x + mat [2][1] * y + mat [2][2];
		569
		570	return v * (1. / w);
		571	}
		572
		573	rxvt_img *
		574	rxvt_img::transform (nv matrix[3][3])
		575	{
		576	// find new offset
		577	int ox = mat_apply (matrix, 0, x, y);
		578	int oy = mat_apply (matrix, 1, x, y);
		579
		580	// calculate new pixel bounding box coordinates
		581	nv d [2], rmin[2], rmax[2];
		582
		583	for (int i = 0; i < 2; ++i)
		584	{
		585	nv v;
		586	v = mat_apply (matrix, i, 0, 0); rmin [i] = rmax [i] = v; d [i] = v;
		587	v = mat_apply (matrix, i, w, 0); min_it (rmin [i], v); max_it (rmax [i], v);
		588	v = mat_apply (matrix, i, 0, h); min_it (rmin [i], v); max_it (rmax [i], v);
		589	v = mat_apply (matrix, i, w, h); min_it (rmin [i], v); max_it (rmax [i], v);
		590	}
		591
		592	int dx = floor (rmin [0]);
		593	int dy = floor (rmin [1]);
		594
		595	int new_width = ceil (rmax [0] - dx);
		596	int new_height = ceil (rmax [1] - dy);
		597
		598	nv inv[3][3];
		599	mat_invert (matrix, inv);
		600
472	rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat);	601	rxvt_img *img = new rxvt_img (s, format, ox - dx - d [0], oy - dy - d [1], new_width, new_height, repeat);
473	img->alloc ();	602	img->alloc ();
474		603
475	Display *dpy = s->display->dpy;	604	Display *dpy = s->display->dpy;
476	Picture src = src_picture ();	605	Picture src = src_picture ();
477	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	606	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
478		607
479	XTransform xfrm;	608	XTransform xfrm;
480		609
481	for (int i = 0; i < 3; ++i)	610	for (int i = 0; i < 3; ++i)
482	for (int j = 0; j < 3; ++j)	611	for (int j = 0; j < 3; ++j)
483	xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);	612	xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
484
485	#if 0
486	xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
487	xfrm.matrix [1][2] -= XDoubleToFixed (y);
488	#endif
489		613
490	XRenderSetPictureFilter (dpy, src, "good", 0, 0);	614	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
491	XRenderSetPictureTransform (dpy, src, &xfrm);	615	XRenderSetPictureTransform (dpy, src, &xfrm);
492	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);	616	XRenderComposite (dpy, PictOpSrc, src, None, dst, dx, dy, 0, 0, 0, 0, new_width, new_height);
493		617
494	XRenderFreePicture (dpy, src);	618	XRenderFreePicture (dpy, src);
495	XRenderFreePicture (dpy, dst);	619	XRenderFreePicture (dpy, dst);
496		620
497	return img;	621	return img;
…		…
501	rxvt_img::scale (int new_width, int new_height)	625	rxvt_img::scale (int new_width, int new_height)
502	{	626	{
503	if (w == new_width && h == new_height)	627	if (w == new_width && h == new_height)
504	return clone ();	628	return clone ();
505		629
506	double matrix[9] = {	630	nv matrix[3][3] = {
507	w / (double)new_width, 0, 0,	631	{ new_width / (nv)w, 0, 0 },
508	0, h / (double)new_height, 0,	632	{ 0, new_height / (nv)h, 0 },
509	0, 0, 1	633	{ 0, 0, 1 }
510	};	634	};
511		635
512	int old_repeat_mode = repeat;	636	int old_repeat_mode = repeat;
513	repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems	637	repeat = RepeatPad; // not right, but xrender can't properly scale it seems
514		638
515	rxvt_img *img = transform (new_width, new_height, matrix);	639	rxvt_img *img = transform (matrix);
516		640
517	repeat = old_repeat_mode;	641	repeat = old_repeat_mode;
518	img->repeat = repeat;	642	img->repeat = repeat;
519		643
520	return img;	644	return img;
521	}	645	}
522		646
523	rxvt_img *	647	rxvt_img *
524	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)	648	rxvt_img::rotate (int cx, int cy, nv phi)
525	{	649	{
526	double s = sin (phi);	650	nv s = sin (phi);
527	double c = cos (phi);	651	nv c = cos (phi);
528		652
529	double matrix[9] = {	653	nv matrix[3][3] = {
530	c, -s, -c * x + s * y + x,	654	{ c, -s, cx - c * cx + s * cy },
531	s, c, -s * x - c * y + y,	655	{ s, c, cy - s * cx - c * cy },
532	0, 0, 1	656	{ 0, 0, 1 }
		657	//{ c, -s, 0 },
		658	//{ s, c, 0 },
		659	//{ 0, 0, 1 }
533	};	660	};
534		661
535	return transform (new_width, new_height, matrix);	662	//move (-cx, -cy);
536	}	663	rxvt_img *img = transform (matrix);
		664	//move ( cx, cy);
		665	//img->move (cx, cy);
537		666
		667	return img;
		668	}
		669
538	rxvt_img *	670	rxvt_img *
539	rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg)	671	rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
540	{	672	{
541	if (new_format == format)	673	if (new_format == format)
542	return clone ();	674	return clone ();
543		675
544	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);	676	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
…		…
550	int op = PictOpSrc;	682	int op = PictOpSrc;
551		683
552	if (format->direct.alphaMask && !new_format->direct.alphaMask)	684	if (format->direct.alphaMask && !new_format->direct.alphaMask)
553	{	685	{
554	// does it have to be that complicated	686	// does it have to be that complicated
555	rgba c;
556	bg.get (c);
557
558	XRenderColor rc = { c.r, c.g, c.b, 0xffff };	687	XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
559	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);	688	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
560		689
561	op = PictOpOver;	690	op = PictOpOver;
562	}	691	}
563		692
…		…
568		697
569	return img;	698	return img;
570	}	699	}
571		700
572	rxvt_img *	701	rxvt_img *
573	rxvt_img::blend (rxvt_img *img, double factor)	702	rxvt_img::blend (rxvt_img *img, nv factor)
574	{	703	{
575	rxvt_img *img2 = clone ();	704	rxvt_img *img2 = clone ();
576	Display *dpy = s->display->dpy;	705	Display *dpy = s->display->dpy;
577	Picture src = img->src_picture ();	706	Picture src = img->src_picture ();
578	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);	707	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
579	Picture mask = create_xrender_mask (dpy, img->pm, False);	708	Picture mask = create_xrender_mask (dpy, img->pm, False, False);
580		709
581	XRenderColor mask_c;	710	XRenderColor mask_c;
582		711
583	mask_c.alpha = float_to_component (factor);	712	mask_c.alpha = float_to_component (factor);
584	mask_c.red =	713	mask_c.red =

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Comparing rxvt-unicode/src/rxvtimg.C (file contents): Revision 1.54 by root, Thu Jun 7 20:24:39 2012 UTC vs. Revision 1.84 by root, Thu Jun 14 18:19:11 2012 UTC

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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.54 by root, Thu Jun 7 20:24:39 2012 UTC vs.
Revision 1.84 by root, Thu Jun 14 18:19:11 2012 UTC