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

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.61 by sf-exg, Fri Jun 8 10:28:30 2012 UTC vs.
Revision 1.91 by root, Fri Jun 15 13:21:59 2012 UTC

…		…
1	#include <math.h>	1	#include <math.h>
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
		7	#if 0
		8	struct pict
		9	{
		10	Display *dpy;
		11	Picture pic;
		12
		13	operator Picture () const
		14	{
		15	return pic;
		16	}
		17
		18	pict ()
		19	: pic (0)
		20	{
		21	}
		22
		23	pict (rxvt_img img, XRenderPictFormat format = 0)
		24	: dpy (img->s->display->dpy)
		25	{
		26	XRenderPictureAttributes pa;
		27	pa.repeat = img->repeat;
		28	pic = XRenderCreatePicture (dpy, img->pm, format ? format : img->format, CPRepeat, &pa);
		29	}
		30
		31	~pict ()
		32	{
		33	if (pic)
		34	XRenderFreePicture (dpy, pic);
		35	}
		36	};
		37	#endif
		38
		39	static XRenderPictFormat *
		40	find_alpha_format_for (Display dpy, XRenderPictFormat format)
		41	{
		42	if (format->direct.alphaMask)
		43	return format; // already has alpha
		44
		45	// try to find a suitable alpha format, one bit alpha is enough for our purposes
		46	if (format->type == PictTypeDirect)
		47	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
		48	if (f->direct.alphaMask
		49	&& f->type == PictTypeDirect
		50	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
		51	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
		52	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
		53	return f;
		54
		55	// should be a very good fallback
		56	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
		57	}
6		58
7	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int x, int y, int width, int height, int repeat)	59	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),	60	: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
9	pm(0), ref(0)	61	pm(0), ref(0)
10	{	62	{
49	img->ref->ours = false;	101	img->ref->ours = false;
50		102
51	return img;	103	return img;
52	}	104	}
53		105
		106	# if HAVE_PIXBUF
		107
54	rxvt_img *	108	rxvt_img *
55	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)	109	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)
56	{	110	{
57	Display *dpy = s->display->dpy;	111	Display *dpy = s->display->dpy;
58		112
…		…
62	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks	116	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks
63	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");	117	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
64		118
65	// since we require rgb24/argb32 formats from xrender we assume	119	// since we require rgb24/argb32 formats from xrender we assume
66	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender	120	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender
67	int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24;
68		121
69	int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;	122	int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
70		123
71	XImage xi;	124	XImage xi;
72		125
…		…
76	xi.format = ZPixmap;	129	xi.format = ZPixmap;
77	xi.byte_order = ImageByteOrder (dpy);	130	xi.byte_order = ImageByteOrder (dpy);
78	xi.bitmap_unit = 0; //XY only, unused	131	xi.bitmap_unit = 0; //XY only, unused
79	xi.bitmap_bit_order = 0; //XY only, unused	132	xi.bitmap_bit_order = 0; //XY only, unused
80	xi.bitmap_pad = BitmapPad (dpy);	133	xi.bitmap_pad = BitmapPad (dpy);
81	xi.depth = depth;	134	xi.depth = 32;
82	xi.bytes_per_line = 0;	135	xi.bytes_per_line = 0;
83	xi.bits_per_pixel = 32; //Z only	136	xi.bits_per_pixel = 32; //Z only
84	xi.red_mask = 0x00000000; //Z only, unused	137	xi.red_mask = 0x00000000; //Z only, unused
85	xi.green_mask = 0x00000000; //Z only, unused	138	xi.green_mask = 0x00000000; //Z only, unused
86	xi.blue_mask = 0x00000000; //Z only, unused	139	xi.blue_mask = 0x00000000; //Z only, unused
…		…
95	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");	148	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
96		149
97	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);	150	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);
98		151
99	int rowstride = gdk_pixbuf_get_rowstride (pb);	152	int rowstride = gdk_pixbuf_get_rowstride (pb);
100		153	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);	154	unsigned char *row = gdk_pixbuf_get_pixels (pb);
		155
103	char *line = xi.data;	156	char *line = xi.data;
104		157
105	for (int y = 0; y < height; y++)	158	for (int y = 0; y < height; y++)
106	{	159	{
107	unsigned char *src = row;	160	unsigned char *src = row;
108	uint32_t dst = (uint32_t )line;	161	uint32_t dst = (uint32_t )line;
109		162
110	if (depth == 24)	163	if (!pb_has_alpha)
111	for (int x = 0; x < width; x++)	164	for (int x = 0; x < width; x++)
112	{	165	{
113	uint8_t r = *src++;	166	uint8_t r = *src++;
114	uint8_t g = *src++;	167	uint8_t g = *src++;
115	uint8_t b = *src++;	168	uint8_t b = *src++;
116		169
117	uint32_t v = (r << 16) \| (g << 8) \| b;	170	uint32_t v = (255 << 24) \| (r << 16) \| (g << 8) \| b;
118		171
119	if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)	172	if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
120	v = ecb_bswap32 (v);	173	v = ecb_bswap32 (v);
121		174
122	*dst++ = v;	175	*dst++ = v;
…		…
139		192
140	row += rowstride;	193	row += rowstride;
141	line += xi.bytes_per_line;	194	line += xi.bytes_per_line;
142	}	195	}
143		196
144	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height);	197	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
145	img->alloc ();	198	img->alloc ();
146		199
147	GC gc = XCreateGC (dpy, img->pm, 0, 0);	200	GC gc = XCreateGC (dpy, img->pm, 0, 0);
148	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);	201	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
149	XFreeGC (dpy, gc);	202	XFreeGC (dpy, gc);
…		…
167	g_object_unref (pb);	220	g_object_unref (pb);
168		221
169	return img;	222	return img;
170	}	223	}
171		224
		225	# endif
		226
172	void	227	void
173	rxvt_img::destroy ()	228	rxvt_img::destroy ()
174	{	229	{
175	if (--ref->cnt)	230	if (--ref->cnt)
176	return;	231	return;
…		…
192	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);	247	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
193	ref = new pixref (w, h);	248	ref = new pixref (w, h);
194	}	249	}
195		250
196	Picture	251	Picture
197	rxvt_img::src_picture ()	252	rxvt_img::picture ()
198	{	253	{
199	Display *dpy = s->display->dpy;	254	Display *dpy = s->display->dpy;
200		255
201	XRenderPictureAttributes pa;	256	XRenderPictureAttributes pa;
202	pa.repeat = repeat;	257	pa.repeat = repeat;
…		…
209	rxvt_img::unshare ()	264	rxvt_img::unshare ()
210	{	265	{
211	if (ref->cnt == 1 && ref->ours)	266	if (ref->cnt == 1 && ref->ours)
212	return;	267	return;
213		268
214	//TODO: maybe should reify instead
215	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);	269	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
216	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);	270	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
217	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);	271	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
218	XFreeGC (s->display->dpy, gc);	272	XFreeGC (s->display->dpy, gc);
219		273
…		…
222	pm = pm2;	276	pm = pm2;
223	ref = new pixref (ref->w, ref->h);	277	ref = new pixref (ref->w, ref->h);
224	}	278	}
225		279
226	void	280	void
227	rxvt_img::fill (const rxvt_color &c)	281	rxvt_img::fill (const rgba &c)
228	{	282	{
229	XGCValues gcv;	283	XRenderColor rc = { c.r, c.g, c.b, c.a };
230	gcv.foreground = c;	284
231	GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);	285	Display *dpy = s->display->dpy;
232	XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);	286	Picture src = picture ();
233	XFreeGC (s->display->dpy, gc);	287	XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h);
		288	XRenderFreePicture (dpy, src);
		289	}
		290
		291	void
		292	rxvt_img::add_alpha ()
		293	{
		294	if (format->direct.alphaMask)
		295	return;
		296
		297	Display *dpy = s->display->dpy;
		298
		299	rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat);
		300	img->alloc ();
		301
		302	Picture src = picture ();
		303	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
		304
		305	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
		306
		307	XRenderFreePicture (dpy, src);
		308	XRenderFreePicture (dpy, dst);
		309
		310	::swap (img->ref, ref);
		311	::swap (img->pm , pm );
		312
		313	delete img;
234	}	314	}
235		315
236	static void	316	static void
237	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)	317	get_gaussian_kernel (int radius, int width, rxvt_img::nv kernel, XFixed params)
238	{	318	{
239	double sigma = radius / 2.0;	319	rxvt_img::nv sigma = radius / 2.0;
240	double scale = sqrt (2.0 * M_PI) * sigma;	320	rxvt_img::nv scale = sqrt (2.0 * M_PI) * sigma;
241	double sum = 0.0;	321	rxvt_img::nv sum = 0.0;
242		322
243	for (int i = 0; i < width; i++)	323	for (int i = 0; i < width; i++)
244	{	324	{
245	double x = i - width / 2;	325	rxvt_img::nv x = i - width / 2;
246	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;	326	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
247	sum += kernel[i];	327	sum += kernel[i];
248	}	328	}
249		329
250	params[0] = XDoubleToFixed (width);	330	params[0] = XDoubleToFixed (width);
…		…
260	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))	340	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
261	return clone ();	341	return clone ();
262		342
263	Display *dpy = s->display->dpy;	343	Display *dpy = s->display->dpy;
264	int size = max (rh, rv) * 2 + 1;	344	int size = max (rh, rv) * 2 + 1;
265	double kernel = (double )malloc (size * sizeof (double));	345	nv kernel = (nv )malloc (size * sizeof (nv));
266	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));	346	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
267	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);	347	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
268	img->alloc ();	348	img->alloc ();
269		349
270	XRenderPictureAttributes pa;	350	XRenderPictureAttributes pa;
…		…
308	w, h);	388	w, h);
309	}	389	}
310		390
311	free (kernel);	391	free (kernel);
312	free (params);	392	free (params);
		393
313	XRenderFreePicture (dpy, src);	394	XRenderFreePicture (dpy, src);
314	XRenderFreePicture (dpy, dst);	395	XRenderFreePicture (dpy, dst);
315	XRenderFreePicture (dpy, tmp);	396	XRenderFreePicture (dpy, tmp);
316		397
317	return img;	398	return img;
318	}	399	}
319		400
320	static Picture	401	static Picture
321	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)	402	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha)
322	{	403	{
323	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);	404	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
324		405
325	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);	406	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
326	XRenderPictureAttributes pa;	407	XRenderPictureAttributes pa;
327	pa.repeat = True;	408	pa.repeat = RepeatNormal;
		409	pa.component_alpha = component_alpha;
328	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);	410	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat \| CPComponentAlpha, &pa);
329		411
330	XFreePixmap (dpy, pixmap);	412	XFreePixmap (dpy, pixmap);
331		413
332	return mask;	414	return mask;
333	}	415	}
334		416
		417	static void
		418	extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
		419	{
		420	int32_t x = clamp (c, cl0, cl1);
		421	c -= x;
		422	xc = x;
		423	}
		424
		425	static bool
		426	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)
		427	{
		428	extract (cl0, cl1, r, xr);
		429	extract (cl0, cl1, g, xg);
		430	extract (cl0, cl1, b, xb);
		431	extract (cl0, cl1, a, xa);
		432
		433	return xr \| xg \| xb \| xa;
		434	}
		435
335	void	436	void
336	rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)	437	rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
337	{	438	{
		439	unshare ();
		440
338	Display *dpy = s->display->dpy;	441	Display *dpy = s->display->dpy;
339	Picture src = create_xrender_mask (dpy, pm, True);
340	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	442	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
341		443
		444	// loop should not be needed for brightness, as only -1..1 makes sense
		445	//while (r \| g \| b \| a)
		446	{
		447	unsigned short xr, xg, xb, xa;
342	XRenderColor mask_c;	448	XRenderColor mask_c;
343	mask_c.red = r;	449
344	mask_c.green = g;	450	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
345	mask_c.blue = b;	451	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
346	mask_c.alpha = a;	452
		453	if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
		454	{
		455	XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
		456	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		457	mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
		458	mask_c.green = -mask_c.green;
		459	mask_c.blue = -mask_c.blue;
		460	mask_c.alpha = -mask_c.alpha;
		461	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
		462	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		463	}
		464	}
		465
		466	XRenderFreePicture (dpy, dst);
		467	}
		468
		469	void
		470	rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
		471	{
		472	if (r < 0 \|\| g < 0 \|\| b < 0 \|\| a < 0)
		473	rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
		474
		475	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
		476	img->alloc ();
		477	img->fill (rgba (0, 0, 0, 0));
		478
		479	// premultiply (yeah, these are not exact, sue me or fix it)
		480	r = (r * (a >> 8)) >> 8;
		481	g = (g * (a >> 8)) >> 8;
		482	b = (b * (a >> 8)) >> 8;
		483
		484	Display *dpy = s->display->dpy;
		485
		486	Picture src = picture ();
		487	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
		488	Picture mul = create_xrender_mask (dpy, pm, True, True);
		489
		490	//TODO: this operator does not yet implement some useful contrast
		491	while (r \| g \| b \| a)
		492	{
		493	unsigned short xr, xg, xb, xa;
		494	XRenderColor mask_c;
		495
		496	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
		497	{
		498	XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1);
		499	XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h);
		500	}
		501	}
		502
		503	XRenderFreePicture (dpy, mul);
		504	XRenderFreePicture (dpy, dst);
		505	XRenderFreePicture (dpy, src);
		506
		507	::swap (img->ref, ref);
		508	::swap (img->pm , pm );
		509
		510	delete img;
		511	}
		512
		513	void
		514	rxvt_img::draw (rxvt_img *img, int op, nv mask)
		515	{
		516	unshare ();
		517
		518	Display *dpy = s->display->dpy;
		519	Picture src = img->picture ();
		520	Picture dst = picture ();
		521	Picture mask_p = 0;
		522
		523	if (mask != 1.)
		524	{
		525	mask_p = create_xrender_mask (dpy, img->pm, False, False);
		526	XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) };
347	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	527	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
		528	}
348		529
349	XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	530	XRenderComposite (dpy, op, src, mask_p, dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h);
350		531
351	XRenderFreePicture (dpy, src);	532	XRenderFreePicture (dpy, src);
352	XRenderFreePicture (dpy, dst);	533	XRenderFreePicture (dpy, dst);
353	}
354		534
355	void	535	if (mask_p)
356	rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
357	{
358	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
359	return;
360
361	Display *dpy = s->display->dpy;
362	Picture src = create_xrender_mask (dpy, pm, True);
363	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
364
365	XRenderColor mask_c;
366	mask_c.red = r;
367	mask_c.green = g;
368	mask_c.blue = b;
369	mask_c.alpha = a;
370	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
371
372	XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
373
374	XRenderFreePicture (dpy, src);	536	XRenderFreePicture (dpy, mask_p);
375	XRenderFreePicture (dpy, dst);
376	}	537	}
377		538
378	rxvt_img *	539	rxvt_img *
379	rxvt_img::clone ()	540	rxvt_img::clone ()
380	{	541	{
381	return new rxvt_img (*this);	542	return new rxvt_img (*this);
382	}
383
384	static XRenderPictFormat *
385	find_alpha_format_for (Display dpy, XRenderPictFormat format)
386	{
387	if (format->direct.alphaMask)
388	return format; // already has alpha
389
390	// try to find a suitable alpha format, one bit alpha is enough for our purposes
391	if (format->type == PictTypeDirect)
392	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
393	if (f->direct.alphaMask
394	&& f->type == PictTypeDirect
395	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
396	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
397	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
398	return f;
399
400	// should be a very good fallback
401	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
402	}	543	}
403		544
404	rxvt_img *	545	rxvt_img *
405	rxvt_img::reify ()	546	rxvt_img::reify ()
406	{	547	{
407	if (x == 0 && y == 0 && w == ref->w && h == ref->h)	548	if (x == 0 && y == 0 && w == ref->w && h == ref->h)
408	return clone ();	549	return clone ();
409		550
410	Display *dpy = s->display->dpy;	551	Display *dpy = s->display->dpy;
411		552
		553	// add an alpha channel if...
412	bool alpha = !format->direct.alphaMask	554	bool alpha = !format->direct.alphaMask // pixmap has none yet
413	&& (x \|\| y)	555	&& (x \|\| y) // we need one because of non-zero offset
414	&& repeat == RepeatNone;	556	&& repeat == RepeatNone; // and we have no good pixels to fill with
415		557
416	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);	558	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
417	img->alloc ();	559	img->alloc ();
418		560
419	Picture src = src_picture ();	561	Picture src = picture ();
420	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	562	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
421		563
422	if (alpha)	564	if (alpha)
423	{	565	{
424	XRenderColor rc = { 0, 0, 0, 0 };	566	XRenderColor rc = { 0, 0, 0, 0 };
425	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles	567	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
426	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h);	568	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
427	}	569	}
428	else	570	else
429	XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);	571	XRenderComposite (dpy, PictOpSrc, src, None, dst, -x, -y, 0, 0, 0, 0, w, h);
430		572
431	XRenderFreePicture (dpy, src);	573	XRenderFreePicture (dpy, src);
432	XRenderFreePicture (dpy, dst);	574	XRenderFreePicture (dpy, dst);
433		575
434	return img;	576	return img;
…		…
437	rxvt_img *	579	rxvt_img *
438	rxvt_img::sub_rect (int x, int y, int width, int height)	580	rxvt_img::sub_rect (int x, int y, int width, int height)
439	{	581	{
440	rxvt_img *img = clone ();	582	rxvt_img *img = clone ();
441		583
442	img->x += x;	584	img->x -= x;
443	img->y += y;	585	img->y -= y;
444		586
445	if (w != width \|\| h != height)	587	if (w != width \|\| h != height)
446	{	588	{
447	img->w = width;	589	img->w = width;
448	img->h = height;	590	img->h = height;
…		…
453	}	595	}
454		596
455	return img;	597	return img;
456	}	598	}
457		599
458	rxvt_img *	600	typedef rxvt_img::nv matrix[3][3];
459	rxvt_img::transform (int new_width, int new_height, double matrix[9])
460	{
461	rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat);
462	img->alloc ();
463		601
464	Display *dpy = s->display->dpy;	602	static void
465	Picture src = src_picture ();	603	mat_invert (matrix mat, rxvt_img::nv (&inv)[3][3])
466	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	604	{
		605	rxvt_img::nv s0 = mat [2][2] * mat [1][1] - mat [2][1] * mat [1][2];
		606	rxvt_img::nv s1 = mat [2][1] * mat [0][2] - mat [2][2] * mat [0][1];
		607	rxvt_img::nv s2 = mat [1][2] * mat [0][1] - mat [1][1] * mat [0][2];
467		608
468	XTransform xfrm;	609	rxvt_img::nv invdet = 1. / (mat [0][0] * s0 + mat [1][0] * s1 + mat [2][0] * s2);
469		610
		611	inv [0][0] = invdet * s0;
		612	inv [0][1] = invdet * s1;
		613	inv [0][2] = invdet * s2;
		614
		615	inv [1][0] = invdet * (mat [2][0] * mat [1][2] - mat [2][2] * mat [1][0]);
		616	inv [1][1] = invdet * (mat [2][2] * mat [0][0] - mat [2][0] * mat [0][2]);
		617	inv [1][2] = invdet * (mat [1][0] * mat [0][2] - mat [1][2] * mat [0][0]);
		618
		619	inv [2][0] = invdet * (mat [2][1] * mat [1][0] - mat [2][0] * mat [1][1]);
		620	inv [2][1] = invdet * (mat [2][0] * mat [0][1] - mat [2][1] * mat [0][0]);
		621	inv [2][2] = invdet * (mat [1][1] * mat [0][0] - mat [1][0] * mat [0][1]);
		622	}
		623
		624	static rxvt_img::nv
		625	mat_apply (matrix mat, int i, rxvt_img::nv x, rxvt_img::nv y)
		626	{
		627	rxvt_img::nv v = mat [i][0] * x + mat [i][1] * y + mat [i][2];
		628	rxvt_img::nv w = mat [2][0] * x + mat [2][1] * y + mat [2][2];
		629
		630	return v * (1. / w);
		631	}
		632
		633	static void
		634	mat_mult (matrix a, matrix b, matrix r)
		635	{
470	for (int i = 0; i < 3; ++i)	636	for (int i = 0; i < 3; ++i)
471	for (int j = 0; j < 3; ++j)	637	for (int j = 0; j < 3; ++j)
		638	r [i][j] = a [i][0] * b [0][j]
		639	+ a [i][1] * b [1][j]
		640	+ a [i][2] * b [2][j];
		641	}
		642
		643	static void
		644	mat_trans (rxvt_img::nv x, rxvt_img::nv y, matrix mat)
		645	{
		646	mat [0][0] = 1; mat [0][1] = 0; mat [0][2] = x;
		647	mat [1][0] = 0; mat [1][1] = 1; mat [1][2] = y;
		648	mat [2][0] = 0; mat [2][1] = 0; mat [2][2] = 1;
		649	}
		650
		651	rxvt_img *
		652	rxvt_img::transform (nv matrix[3][3])
		653	{
		654	// calculate new pixel bounding box coordinates
		655	nv r[2], rmin[2], rmax[2];
		656
		657	for (int i = 0; i < 2; ++i)
		658	{
		659	nv v;
		660
		661	v = mat_apply (matrix, i, 0+x, 0+y); rmin [i] = rmax [i] = v; r [i] = v;
		662	v = mat_apply (matrix, i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
		663	v = mat_apply (matrix, i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		664	v = mat_apply (matrix, i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		665	}
		666
		667	float sx = rmin [0] - x;
		668	float sy = rmin [1] - y;
		669
		670	// TODO: adjust matrix for subpixel accuracy
		671	int nx = floor (rmin [0]);
		672	int ny = floor (rmin [1]);
		673
		674	int new_width = ceil (rmax [0] - rmin [0]);
		675	int new_height = ceil (rmax [1] - rmin [1]);
		676
		677	::matrix tr, tmp;
		678	mat_trans (x, y, tr);
		679	mat_mult (matrix, tr, tmp);
		680	mat_trans (-x, -y, tr);
		681	mat_mult (tr, tmp, matrix);
		682
		683	::matrix inv;
		684	mat_invert (matrix, inv);
		685
		686	rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat);
		687	img->alloc ();
		688
		689	Display *dpy = s->display->dpy;
		690	Picture src = picture ();
		691	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
		692
		693	XTransform xfrm;
		694
		695	for (int i = 0; i < 3; ++i)
		696	for (int j = 0; j < 3; ++j)
472	xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);	697	xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
473
474	#if 0
475	xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
476	xfrm.matrix [1][2] -= XDoubleToFixed (y);
477	#endif
478		698
479	XRenderSetPictureFilter (dpy, src, "good", 0, 0);	699	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
480	XRenderSetPictureTransform (dpy, src, &xfrm);	700	XRenderSetPictureTransform (dpy, src, &xfrm);
481	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);	701	XRenderComposite (dpy, PictOpSrc, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
		702	#if 1
		703	{
		704	XRenderColor rc = { 65535,0,0,65535 };
		705	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, new_width, new_height);
		706	}{
		707	XRenderColor rc = { 0,0,0,65535 };
		708	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 1, 1, new_width - 2, new_height - 2);
		709	}
		710	XRenderComposite (dpy, PictOpOver, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
		711	#endif
482		712
483	XRenderFreePicture (dpy, src);	713	XRenderFreePicture (dpy, src);
484	XRenderFreePicture (dpy, dst);	714	XRenderFreePicture (dpy, dst);
485		715
486	return img;	716	return img;
…		…
490	rxvt_img::scale (int new_width, int new_height)	720	rxvt_img::scale (int new_width, int new_height)
491	{	721	{
492	if (w == new_width && h == new_height)	722	if (w == new_width && h == new_height)
493	return clone ();	723	return clone ();
494		724
495	double matrix[9] = {	725	nv matrix[3][3] = {
496	w / (double)new_width, 0, 0,	726	{ new_width / (nv)w, 0, 0 },
497	0, h / (double)new_height, 0,	727	{ 0, new_height / (nv)h, 0 },
498	0, 0, 1	728	{ 0, 0, 1 }
499	};	729	};
500		730
501	int old_repeat_mode = repeat;	731	int old_repeat_mode = repeat;
502	repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems	732	repeat = RepeatPad; // not right, but xrender can't properly scale it seems
503		733
504	rxvt_img *img = transform (new_width, new_height, matrix);	734	rxvt_img *img = transform (matrix);
505		735
506	repeat = old_repeat_mode;	736	repeat = old_repeat_mode;
507	img->repeat = repeat;	737	img->repeat = repeat;
508		738
509	return img;	739	return img;
510	}	740	}
511		741
512	rxvt_img *	742	rxvt_img *
513	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)	743	rxvt_img::rotate (int cx, int cy, nv phi)
514	{	744	{
515	double s = sin (phi);	745	nv s = sin (phi);
516	double c = cos (phi);	746	nv c = cos (phi);
517		747
518	double matrix[9] = {	748	nv matrix[3][3] = {
		749	#if 0
519	c, -s, -c * x + s * y + x,	750	{ c, -s, cx - c * cx + s * cy },
520	s, c, -s * x - c * y + y,	751	{ s, c, cy - s * cx - c * cy },
521	0, 0, 1	752	{ 0, 0, 1 }
		753	#else
		754	{ c, -s, 0 },
		755	{ s, c, 0 },
		756	{ 0, 0, 1 }
		757	#endif
522	};	758	};
523		759
524	return transform (new_width, new_height, matrix);	760	move (-cx, -cy);
525	}	761	rxvt_img *img = transform (matrix);
		762	move ( cx, cy);
		763	img->move (cx, cy);
526		764
		765	return img;
		766	}
		767
527	rxvt_img *	768	rxvt_img *
528	rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg)	769	rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
529	{	770	{
530	if (new_format == format)	771	if (new_format == format)
531	return clone ();	772	return clone ();
532		773
533	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);	774	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
534	img->alloc ();	775	img->alloc ();
535		776
536	Display *dpy = s->display->dpy;	777	Display *dpy = s->display->dpy;
537	Picture src = src_picture ();	778	Picture src = picture ();
538	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);	779	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
539	int op = PictOpSrc;	780	int op = PictOpSrc;
540		781
541	if (format->direct.alphaMask && !new_format->direct.alphaMask)	782	if (format->direct.alphaMask && !new_format->direct.alphaMask)
542	{	783	{
543	// does it have to be that complicated	784	// does it have to be that complicated
544	rgba c;
545	bg.get (c);
546
547	XRenderColor rc = { c.r, c.g, c.b, 0xffff };	785	XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
548	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);	786	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
549		787
550	op = PictOpOver;	788	op = PictOpOver;
551	}	789	}
552		790
…		…
557		795
558	return img;	796	return img;
559	}	797	}
560		798
561	rxvt_img *	799	rxvt_img *
562	rxvt_img::blend (rxvt_img *img, double factor)	800	rxvt_img::blend (rxvt_img *img, nv factor)
563	{	801	{
564	rxvt_img *img2 = clone ();	802	rxvt_img *img2 = clone ();
565	Display *dpy = s->display->dpy;	803	Display *dpy = s->display->dpy;
566	Picture src = img->src_picture ();	804	Picture src = img->picture ();
567	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);	805	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
568	Picture mask = create_xrender_mask (dpy, img->pm, False);	806	Picture mask = create_xrender_mask (dpy, img->pm, False, False);
569		807
570	XRenderColor mask_c;	808	XRenderColor mask_c;
571		809
572	mask_c.alpha = float_to_component (factor);	810	mask_c.alpha = float_to_component (factor);
573	mask_c.red =	811	mask_c.red =

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Comparing rxvt-unicode/src/rxvtimg.C (file contents): Revision 1.61 by sf-exg, Fri Jun 8 10:28:30 2012 UTC vs. Revision 1.91 by root, Fri Jun 15 13:21:59 2012 UTC

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Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.61 by sf-exg, Fri Jun 8 10:28:30 2012 UTC vs.
Revision 1.91 by root, Fri Jun 15 13:21:59 2012 UTC