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

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.47 by root, Thu Jun 7 19:06:26 2012 UTC vs.
Revision 1.109 by sf-exg, Sat Jul 15 08:16:31 2017 UTC

…		…
		1	/----------------------------------------------------------------------
		2	* File: rxvtimg.C
		3	----------------------------------------------------------------------
		4	*
		5	* All portions of code are copyright by their respective author/s.
		6	* Copyright (c) 2012 Marc Lehmann <schmorp@schmorp.de>
		7	* Copyright (c) 2012 Emanuele Giaquinta <e.giaquinta@glauco.it>
		8	*
		9	* This program is free software; you can redistribute it and/or modify
		10	* it under the terms of the GNU General Public License as published by
		11	* the Free Software Foundation; either version 3 of the License, or
		12	* (at your option) any later version.
		13	*
		14	* This program is distributed in the hope that it will be useful,
		15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
		16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		17	* GNU General Public License for more details.
		18	*
		19	* You should have received a copy of the GNU General Public License
		20	* along with this program; if not, write to the Free Software
		21	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
		22	---------------------------------------------------------------------/
		23
		24	#include <string.h>
1	#include <math.h>	25	#include <math.h>
2	#include "../config.h"	26	#include "../config.h"
3	#include "rxvt.h"	27	#include "rxvt.h"
4		28
5	#if HAVE_IMG	29	#if HAVE_IMG
6		30
		31	typedef rxvt_img::nv nv;
		32
		33	namespace
		34	{
		35	struct mat3x3
		36	{
		37	nv v[3][3];
		38
		39	mat3x3 ()
		40	{
		41	}
		42
		43	mat3x3 (const nv *matrix)
		44	{
		45	memcpy (v, matrix, sizeof (v));
		46	}
		47
		48	mat3x3 (nv v11, nv v12, nv v13, nv v21, nv v22, nv v23, nv v31, nv v32, nv v33)
		49	{
		50	v[0][0] = v11; v[0][1] = v12; v[0][2] = v13;
		51	v[1][0] = v21; v[1][1] = v22; v[1][2] = v23;
		52	v[2][0] = v31; v[2][1] = v32; v[2][2] = v33;
		53	}
		54
		55	mat3x3 inverse ();
		56
		57	nv *operator [](int i) { return &v[i][0]; }
		58	const nv *operator [](int i) const { return &v[i][0]; }
		59
		60	operator const nv * () const { return &v[0][0]; }
		61	operator nv * () { return &v[0][0]; }
		62
		63	// quite inefficient, hopefully gcc pulls the w calc out of any loops
		64	nv apply1 (int i, nv x, nv y)
		65	{
		66	mat3x3 &m = *this;
		67
		68	nv v = m[i][0] * x + m[i][1] * y + m[i][2];
		69	nv w = m[2][0] * x + m[2][1] * y + m[2][2];
		70
		71	return v * (1. / w);
		72	}
		73
		74	static mat3x3 translate (nv x, nv y);
		75	static mat3x3 scale (nv s, nv t);
		76	static mat3x3 rotate (nv phi);
		77	};
		78
		79	mat3x3
		80	mat3x3::inverse ()
		81	{
		82	mat3x3 &m = *this;
		83	mat3x3 inv;
		84
		85	nv s0 = m[2][2] * m[1][1] - m[2][1] * m[1][2];
		86	nv s1 = m[2][1] * m[0][2] - m[2][2] * m[0][1];
		87	nv s2 = m[1][2] * m[0][1] - m[1][1] * m[0][2];
		88
		89	nv invdet = 1. / (m[0][0] * s0 + m[1][0] * s1 + m[2][0] * s2);
		90
		91	inv[0][0] = invdet * s0;
		92	inv[0][1] = invdet * s1;
		93	inv[0][2] = invdet * s2;
		94
		95	inv[1][0] = invdet * (m[2][0] * m[1][2] - m[2][2] * m[1][0]);
		96	inv[1][1] = invdet * (m[2][2] * m[0][0] - m[2][0] * m[0][2]);
		97	inv[1][2] = invdet * (m[1][0] * m[0][2] - m[1][2] * m[0][0]);
		98
		99	inv[2][0] = invdet * (m[2][1] * m[1][0] - m[2][0] * m[1][1]);
		100	inv[2][1] = invdet * (m[2][0] * m[0][1] - m[2][1] * m[0][0]);
		101	inv[2][2] = invdet * (m[1][1] * m[0][0] - m[1][0] * m[0][1]);
		102
		103	return inv;
		104	}
		105
		106	static mat3x3
		107	operator *(const mat3x3 &a, const mat3x3 &b)
		108	{
		109	mat3x3 r;
		110
		111	for (int i = 0; i < 3; ++i)
		112	for (int j = 0; j < 3; ++j)
		113	r[i][j] = a[i][0] * b[0][j]
		114	+ a[i][1] * b[1][j]
		115	+ a[i][2] * b[2][j];
		116
		117	return r;
		118	}
		119
		120	mat3x3
		121	mat3x3::translate (nv x, nv y)
		122	{
		123	return mat3x3 (
		124	1, 0, x,
		125	0, 1, y,
		126	0, 0, 1
		127	);
		128	}
		129
		130	mat3x3
		131	mat3x3::scale (nv s, nv t)
		132	{
		133	return mat3x3 (
		134	s, 0, 0,
		135	0, t, 0,
		136	0, 0, 1
		137	);
		138	}
		139
		140	// clockwise
		141	mat3x3
		142	mat3x3::rotate (nv phi)
		143	{
		144	nv s = sin (phi);
		145	nv c = cos (phi);
		146
		147	return mat3x3 (
		148	c, -s, 0,
		149	s, c, 0,
		150	0, 0, 1
		151	);
		152	}
		153
		154	struct composer
		155	{
		156	rxvt_img srcimg, dstimg;
		157	Picture src, dst, msk;
		158	Display *dpy;
		159
		160	ecb_noinline
		161	composer (rxvt_img srcimg, rxvt_img dstimg = 0)
		162	: srcimg (srcimg), dstimg (dstimg), msk (0)
		163	{
		164	if (!this->dstimg)
		165	this->dstimg = srcimg->new_empty ();
		166	else if (!this->dstimg->pm) // somewhat unsatisfying
		167	this->dstimg->alloc ();
		168
		169	dpy = srcimg->d->dpy;
		170	src = srcimg->picture ();
		171	dst = this->dstimg->picture ();
		172	}
		173
		174	ecb_noinline
		175	void mask (bool rgb = true, int w = 1, int h = 1)
		176	{
		177	Pixmap pixmap = XCreatePixmap (dpy, srcimg->pm, w, h, rgb ? 32 : 8);
		178
		179	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, rgb ? PictStandardARGB32 : PictStandardA8);
		180	XRenderPictureAttributes pa;
		181	pa.repeat = RepeatNormal;
		182	pa.component_alpha = rgb;
		183	msk = XRenderCreatePicture (dpy, pixmap, format, CPRepeat \| CPComponentAlpha, &pa);
		184
		185	XFreePixmap (dpy, pixmap);
		186
		187	ecb_assume (msk);
		188	}
		189
		190	// CreateSolidFill creates a very very very weird picture
		191	void mask (const rgba &c)
		192	{
		193	// the casts are needed in C++11 (see 8.5.1)
		194	XRenderColor rc = {
		195	(unsigned short)(c.r * c.a / 65535),
		196	(unsigned short)(c.g * c.a / 65535),
		197	(unsigned short)(c.b * c.a / 65535),
		198	c.a
		199	};
		200	msk = XRenderCreateSolidFill (dpy, &rc);
		201	ecb_assume (msk);
		202	}
		203
		204	void fill (const rgba &c)
		205	{
		206	XRenderColor rc = {
		207	(unsigned short)(c.r * c.a / 65535),
		208	(unsigned short)(c.g * c.a / 65535),
		209	(unsigned short)(c.b * c.a / 65535),
		210	c.a
		211	};
		212
		213	XRenderFillRectangle (dpy, PictOpSrc, msk, &rc, 0, 0, 1, 1);
		214	}
		215
		216	operator rxvt_img *()
		217	{
		218	return dstimg;
		219	}
		220
		221	ecb_noinline
		222	~composer ()
		223	{
		224	XRenderFreePicture (dpy, src);
		225	XRenderFreePicture (dpy, dst);
		226	if (msk) XRenderFreePicture (dpy, msk);
		227	}
		228	};
		229	}
		230
		231	static XRenderPictFormat *
		232	find_alpha_format_for (Display dpy, XRenderPictFormat format)
		233	{
		234	if (format->direct.alphaMask)
		235	return format; // already has alpha
		236
		237	// try to find a suitable alpha format, one bit alpha is enough for our purposes
		238	if (format->type == PictTypeDirect)
		239	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
		240	if (f->direct.alphaMask
		241	&& f->type == PictTypeDirect
		242	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
		243	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
		244	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
		245	return f;
		246
		247	// should be a very good fallback
		248	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
		249	}
		250
7	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int x, int y, int width, int height, int repeat)	251	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),	252	: d(screen->display), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
9	pm(0), ref(0)	253	pm(0), ref(0)
10	{	254	{
11	}	255	}
12		256
		257	rxvt_img::rxvt_img (rxvt_display display, XRenderPictFormat format, int x, int y, int width, int height, int repeat)
		258	: d(display), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
		259	pm(0), ref(0)
		260	{
		261	}
		262
13	rxvt_img::rxvt_img (const rxvt_img &img)	263	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)	264	: d(img.d), 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	{	265	{
16	++ref->cnt;	266	++ref->cnt;
17	}	267	}
18		268
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
26	rxvt_img *	269	rxvt_img *
27	rxvt_img::new_from_root (rxvt_screen *s)	270	rxvt_img::new_from_root (rxvt_screen *s)
28	{	271	{
29	Display *dpy = s->display->dpy;	272	Display *dpy = s->dpy;
30	unsigned int root_pm_w, root_pm_h;	273	unsigned int root_pm_w, root_pm_h;
31	Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]);	274	Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa [XA_XROOTPMAP_ID]);
32	if (root_pixmap == None)	275	if (root_pixmap == None)
33	root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]);	276	root_pixmap = s->display->get_pixmap_property (s->display->xa [XA_ESETROOT_PMAP_ID]);
34		277
35	if (root_pixmap == None)	278	if (root_pixmap == None)
36	return 0;	279	return 0;
37		280
38	Window wdummy;	281	Window wdummy;
56	img->ref->ours = false;	299	img->ref->ours = false;
57		300
58	return img;	301	return img;
59	}	302	}
60		303
		304	# if HAVE_PIXBUF
		305
61	rxvt_img *	306	rxvt_img *
62	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)	307	rxvt_img::new_from_pixbuf (rxvt_screen s, GdkPixbuf pb)
63	{	308	{
		309	Display *dpy = s->dpy;
		310
64	int width = gdk_pixbuf_get_width (pb);	311	int width = gdk_pixbuf_get_width (pb);
65	int height = gdk_pixbuf_get_height (pb);	312	int height = gdk_pixbuf_get_height (pb);
66		313
67	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks	314	if (width > 32767 \|\| height > 32767) // well, we could upload in chunks
68	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");	315	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
69		316
70	// since we require rgb24/argb32 formats from xrender we assume	317	// since we require rgb24/argb32 formats from xrender we assume
71	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender	318	// that both 24 and 32 bpp MUST be supported by any screen that supports xrender
72	int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24;	319
		320	int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
73		321
74	XImage xi;	322	XImage xi;
75		323
76	xi.width = width;	324	xi.width = width;
77	xi.height = height;	325	xi.height = height;
78	xi.xoffset = 0;	326	xi.xoffset = 0;
79	xi.format = ZPixmap;	327	xi.format = ZPixmap;
80	xi.byte_order = MSBFirst; // maybe go for host byte order, because servers are usually local?	328	xi.byte_order = ImageByteOrder (dpy);
81	xi.bitmap_unit = 32;	329	xi.bitmap_unit = 0; //XY only, unused
82	xi.bitmap_bit_order = MSBFirst;	330	xi.bitmap_bit_order = 0; //XY only, unused
83	xi.bitmap_pad = 32;	331	xi.bitmap_pad = BitmapPad (dpy);
84	xi.depth = depth;	332	xi.depth = 32;
85	xi.bytes_per_line = 0;	333	xi.bytes_per_line = 0;
86	xi.bits_per_pixel = 32;	334	xi.bits_per_pixel = 32; //Z only
87	xi.red_mask = 0x00ff0000;	335	xi.red_mask = 0x00000000; //Z only, unused
88	xi.green_mask = 0x0000ff00;	336	xi.green_mask = 0x00000000; //Z only, unused
89	xi.blue_mask = 0x000000ff;	337	xi.blue_mask = 0x00000000; //Z only, unused
		338	xi.obdata = 0; // probably unused
		339
		340	bool byte_order_mismatch = byte_order != xi.byte_order;
90		341
91	if (!XInitImage (&xi))	342	if (!XInitImage (&xi))
92	rxvt_fatal ("unable to initialise ximage, please report.\n");	343	rxvt_fatal ("unable to initialise ximage, please report.\n");
93		344
94	if (height > INT_MAX / xi.bytes_per_line)	345	if (height > INT_MAX / xi.bytes_per_line)
95	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");	346	rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
96		347
97	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);	348	xi.data = (char )rxvt_malloc (height xi.bytes_per_line);
98		349
99	int rowstride = gdk_pixbuf_get_rowstride (pb);	350	int rowstride = gdk_pixbuf_get_rowstride (pb);
100		351	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);	352	unsigned char *row = gdk_pixbuf_get_pixels (pb);
		353
103	char *line = xi.data;	354	char *line = xi.data;
104		355
105	for (int y = 0; y < height; y++)	356	for (int y = 0; y < height; y++)
106	{	357	{
107	unsigned char r, g, b, a;
108	unsigned char *data = row;	358	unsigned char *src = row;
		359	uint32_t dst = (uint32_t )line;
109		360
110	if (depth == 24)
111	for (int x = 0; x < width; x++)	361	for (int x = 0; x < width; x++)
112	{	362	{
113	r = *data++;	363	uint8_t r = *src++;
114	g = *data++;	364	uint8_t g = *src++;
115	b = *data++;	365	uint8_t b = *src++;
		366	uint8_t a = *src;
		367
		368	// this is done so it can be jump-free, but newer gcc's clone inner the loop
		369	a = pb_has_alpha ? a : 255;
		370	src += pb_has_alpha;
		371
		372	r = (r * a + 127) / 255;
		373	g = (g * a + 127) / 255;
		374	b = (b * a + 127) / 255;
		375
		376	uint32_t v = (a << 24) \| (r << 16) \| (g << 8) \| b;
		377
		378	if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
		379	v = ecb_bswap32 (v);
		380
116	*line++ = 0;	381	*dst++ = v;
117	*line++ = r;
118	*line++ = g;
119	*line++ = b;
120	}	382	}
121	else
122	for (int x = 0; x < width; x++)
123	{
124	r = *data++;
125	g = *data++;
126	b = *data++;
127	a = *data++;
128	*line++ = a;
129	*line++ = r;
130	*line++ = g;
131	*line++ = b;
132	}
133		383
134	row += rowstride;	384	row += rowstride;
		385	line += xi.bytes_per_line;
135	}	386	}
136		387
137	Display *dpy = s->display->dpy;
138
139	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height);	388	rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height);
140	img->alloc ();	389	img->alloc ();
141		390
142	GC gc = XCreateGC (dpy, img->pm, 0, 0);	391	GC gc = XCreateGC (dpy, img->pm, 0, 0);
143	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);	392	XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
144	XFreeGC (dpy, gc);	393	XFreeGC (dpy, gc);
…		…
162	g_object_unref (pb);	411	g_object_unref (pb);
163		412
164	return img;	413	return img;
165	}	414	}
166		415
		416	# endif
		417
167	void	418	void
168	rxvt_img::destroy ()	419	rxvt_img::destroy ()
169	{	420	{
170	if (--ref->cnt)	421	if (--ref->cnt)
171	return;	422	return;
172		423
173	if (pm && ref->ours)	424	if (pm && ref->ours)
174	XFreePixmap (s->display->dpy, pm);	425	XFreePixmap (d->dpy, pm);
175		426
176	delete ref;	427	delete ref;
177	}	428	}
178		429
179	rxvt_img::~rxvt_img ()	430	rxvt_img::~rxvt_img ()
…		…
182	}	433	}
183		434
184	void	435	void
185	rxvt_img::alloc ()	436	rxvt_img::alloc ()
186	{	437	{
187	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);	438	pm = XCreatePixmap (d->dpy, d->root, w, h, format->depth);
188	ref = new pixref (w, h);	439	ref = new pixref (w, h);
189	}	440	}
190		441
		442	rxvt_img *
		443	rxvt_img::new_empty ()
		444	{
		445	rxvt_img *img = new rxvt_img (d, format, x, y, w, h, repeat);
		446	img->alloc ();
		447
		448	return img;
		449	}
		450
191	Picture	451	Picture
192	rxvt_img::src_picture ()	452	rxvt_img::picture ()
193	{	453	{
194	Display *dpy = s->display->dpy;	454	Display *dpy = d->dpy;
195		455
196	XRenderPictureAttributes pa;	456	XRenderPictureAttributes pa;
197	pa.repeat = repeat;	457	pa.repeat = repeat;
198	Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);	458	Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
199		459
…		…
204	rxvt_img::unshare ()	464	rxvt_img::unshare ()
205	{	465	{
206	if (ref->cnt == 1 && ref->ours)	466	if (ref->cnt == 1 && ref->ours)
207	return;	467	return;
208		468
209	//TODO: maybe should reify instead
210	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);	469	Pixmap pm2 = XCreatePixmap (d->dpy, d->root, ref->w, ref->h, format->depth);
211	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);	470	GC gc = XCreateGC (d->dpy, pm, 0, 0);
212	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);	471	XCopyArea (d->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
213	XFreeGC (s->display->dpy, gc);	472	XFreeGC (d->dpy, gc);
214		473
215	destroy ();	474	destroy ();
216		475
217	pm = pm2;	476	pm = pm2;
218	ref = new pixref (ref->w, ref->h);	477	ref = new pixref (ref->w, ref->h);
219	}	478	}
220		479
221	void	480	void
		481	rxvt_img::fill (const rgba &c, int x, int y, int w, int h)
		482	{
		483	XRenderColor rc = { c.r, c.g, c.b, c.a };
		484
		485	Display *dpy = d->dpy;
		486	Picture src = picture ();
		487	XRenderFillRectangle (dpy, PictOpSrc, src, &rc, x, y, w, h);
		488	XRenderFreePicture (dpy, src);
		489	}
		490
		491	void
222	rxvt_img::fill (const rxvt_color &c)	492	rxvt_img::fill (const rgba &c)
223	{	493	{
224	XGCValues gcv;	494	fill (c, 0, 0, w, h);
225	gcv.foreground = c;	495	}
226	GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);	496
227	XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);	497	void
228	XFreeGC (s->display->dpy, gc);	498	rxvt_img::add_alpha ()
		499	{
		500	if (format->direct.alphaMask)
		501	return;
		502
		503	composer cc (this, new rxvt_img (d, find_alpha_format_for (d->dpy, format), x, y, w, h, repeat));
		504
		505	XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
		506
		507	rxvt_img *img = cc;
		508
		509	::swap (img->ref, ref);
		510	::swap (img->pm , pm );
		511
		512	delete img;
229	}	513	}
230		514
231	static void	515	static void
232	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)	516	get_gaussian_kernel (int radius, int width, nv kernel, XFixed params)
233	{	517	{
234	double sigma = radius / 2.0;	518	nv sigma = radius / 2.0;
235	double scale = sqrt (2.0 * M_PI) * sigma;	519	nv scale = sqrt (2.0 * M_PI) * sigma;
236	double sum = 0.0;	520	nv sum = 0.0;
237		521
238	for (int i = 0; i < width; i++)	522	for (int i = 0; i < width; i++)
239	{	523	{
240	double x = i - width / 2;	524	nv x = i - width / 2;
241	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;	525	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
242	sum += kernel[i];	526	sum += kernel[i];
243	}	527	}
244		528
245	params[0] = XDoubleToFixed (width);	529	params[0] = XDoubleToFixed (width);
…		…
250	}	534	}
251		535
252	rxvt_img *	536	rxvt_img *
253	rxvt_img::blur (int rh, int rv)	537	rxvt_img::blur (int rh, int rv)
254	{	538	{
255	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))	539	if (!(d->flags & DISPLAY_HAS_RENDER_CONV))
256	return clone ();	540	return clone ();
257		541
258	Display *dpy = s->display->dpy;	542	Display *dpy = d->dpy;
259	int size = max (rh, rv) * 2 + 1;	543	int size = max (rh, rv) * 2 + 1;
260	double kernel = (double )malloc (size * sizeof (double));	544	nv kernel = (nv )malloc (size * sizeof (nv));
261	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));	545	XFixed *params = rxvt_temp_buf<XFixed> (size + 2);
262	rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);	546	rxvt_img *img = new_empty ();
263	img->alloc ();
264
265	Picture src = src_picture ();
266		547
267	XRenderPictureAttributes pa;	548	XRenderPictureAttributes pa;
268	pa.repeat = RepeatPad;	549	pa.repeat = RepeatPad;
269	Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);	550	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
		551	Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
270		552
271	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);	553	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
272	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);	554	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
273	XFreePixmap (dpy, tmp_pm);	555	XFreePixmap (dpy, tmp_pm);
274		556
…		…
290		572
291	size = rv * 2 + 1;	573	size = rv * 2 + 1;
292	get_gaussian_kernel (rv, size, kernel, params);	574	get_gaussian_kernel (rv, size, kernel, params);
293	::swap (params[0], params[1]);	575	::swap (params[0], params[1]);
294		576
295	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);	577	XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
296	XRenderComposite (dpy,	578	XRenderComposite (dpy,
297	PictOpSrc,	579	PictOpSrc,
298	tmp,	580	tmp,
299	None,	581	None,
300	dst,	582	dst,
…		…
303	0, 0,	585	0, 0,
304	w, h);	586	w, h);
305	}	587	}
306		588
307	free (kernel);	589	free (kernel);
308	free (params);	590
309	XRenderFreePicture (dpy, src);	591	XRenderFreePicture (dpy, src);
310	XRenderFreePicture (dpy, dst);	592	XRenderFreePicture (dpy, dst);
311	XRenderFreePicture (dpy, tmp);	593	XRenderFreePicture (dpy, tmp);
312		594
313	return img;	595	return img;
314	}	596	}
315		597
316	static Picture	598	rxvt_img *
317	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)	599	rxvt_img::muladd (nv mul, nv add)
318	{	600	{
319	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);	601	// STEP 1: double the image width, fill all odd columns with white (==1)
320		602
321	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);	603	composer cc (this, new rxvt_img (d, format, 0, 0, w * 2, h, repeat));
322	XRenderPictureAttributes pa;
323	pa.repeat = True;
324	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
325		604
326	XFreePixmap (dpy, pixmap);	605	// why the hell does XRenderSetPictureTransform want a writable matrix :(
		606	// that keeps us from just static const'ing this matrix.
		607	XTransform h_double = {
		608	0x08000, 0, 0,
		609	0, 0x10000, 0,
		610	0, 0, 0x10000
		611	};
327		612
328	return mask;	613	XRenderSetPictureFilter (cc.dpy, cc.src, "nearest", 0, 0);
		614	XRenderSetPictureTransform (cc.dpy, cc.src, &h_double);
		615	XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
		616
		617	cc.mask (false, 2, 1);
		618
		619	static const XRenderColor c0 = { 0, 0, 0, 0 };
		620	XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c0, 0, 0, 1, 1);
		621	static const XRenderColor c1 = { 65535, 65535, 65535, 65535 };
		622	XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &c1, 1, 0, 1, 1);
		623
		624	Picture white = XRenderCreateSolidFill (cc.dpy, &c1);
		625
		626	XRenderComposite (cc.dpy, PictOpOver, white, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
		627
		628	XRenderFreePicture (cc.dpy, white);
		629
		630	// STEP 2: convolve the image with a 3x1 filter
		631	// a 2x1 filter would obviously suffice, but given the total lack of specification
		632	// for xrender, I expect different xrender implementations to randomly diverge.
		633	// we also halve the image, and hope for the best (again, for lack of specs).
		634	composer cc2 (cc.dstimg);
		635
		636	XFixed kernel [] = {
		637	XDoubleToFixed (3), XDoubleToFixed (1),
		638	XDoubleToFixed (0), XDoubleToFixed (mul), XDoubleToFixed (add)
		639	};
		640
		641	XTransform h_halve = {
		642	0x20000, 0, 0,
		643	0, 0x10000, 0,
		644	0, 0, 0x10000
		645	};
		646
		647	XRenderSetPictureFilter (cc.dpy, cc2.src, "nearest", 0, 0);
		648	XRenderSetPictureTransform (cc.dpy, cc2.src, &h_halve);
		649	XRenderSetPictureFilter (cc.dpy, cc2.src, FilterConvolution, kernel, ecb_array_length (kernel));
		650
		651	XRenderComposite (cc.dpy, PictOpSrc, cc2.src, None, cc2.dst, 0, 0, 0, 0, 0, 0, w * 2, h);
		652
		653	return cc2;
		654	}
		655
		656	ecb_noinline static void
		657	extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc)
		658	{
		659	int32_t x = clamp (c, cl0, cl1);
		660	c -= x;
		661	xc = x;
		662	}
		663
		664	ecb_noinline static bool
		665	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)
		666	{
		667	extract (cl0, cl1, r, xr);
		668	extract (cl0, cl1, g, xg);
		669	extract (cl0, cl1, b, xb);
		670	extract (cl0, cl1, a, xa);
		671
		672	return xr \| xg \| xb \| xa;
329	}	673	}
330		674
331	void	675	void
332	rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)	676	rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a)
333	{	677	{
		678	unshare ();
		679
334	Display *dpy = s->display->dpy;	680	Display *dpy = d->dpy;
335	Picture src = create_xrender_mask (dpy, pm, True);
336	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	681	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
337		682
		683	// loop should not be needed for brightness, as only -1..1 makes sense
		684	//while (r \| g \| b \| a)
		685	{
		686	unsigned short xr, xg, xb, xa;
338	XRenderColor mask_c;	687	XRenderColor mask_c;
339	mask_c.red = r;	688
340	mask_c.green = g;	689	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
341	mask_c.blue = b;
342	mask_c.alpha = a;
343	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	690	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
344		691
345	XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	692	if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
		693	{
		694	XRenderColor mask_w = { 65535, 65535, 65535, 65535 };
		695	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		696	mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing
		697	mask_c.green = -mask_c.green;
		698	mask_c.blue = -mask_c.blue;
		699	mask_c.alpha = -mask_c.alpha;
		700	XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h);
		701	XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h);
		702	}
		703	}
346		704
347	XRenderFreePicture (dpy, src);
348	XRenderFreePicture (dpy, dst);	705	XRenderFreePicture (dpy, dst);
349	}	706	}
350		707
351	void	708	void
352	rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)	709	rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a)
353	{	710	{
354	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))	711	if (r < 0 \|\| g < 0 \|\| b < 0 \|\| a < 0)
355	return;	712	rxvt_fatal ("rxvt_img::contrast does not support negative values.\n");
356		713
357	Display *dpy = s->display->dpy;	714	// premultiply (yeah, these are not exact, sue me or fix it)
358	Picture src = create_xrender_mask (dpy, pm, True);	715	r = (r * (a >> 8)) >> 8;
359	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);	716	g = (g * (a >> 8)) >> 8;
		717	b = (b * (a >> 8)) >> 8;
360		718
		719	composer cc (this);
		720	rxvt_img *img = cc;
		721	img->fill (rgba (0, 0, 0, 0));
		722
		723	cc.mask (true);
		724
		725	//TODO: this operator does not yet implement some useful contrast
		726	while (r \| g \| b \| a)
		727	{
		728	unsigned short xr, xg, xb, xa;
361	XRenderColor mask_c;	729	XRenderColor mask_c;
362	mask_c.red = r;	730
363	mask_c.green = g;	731	if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha))
364	mask_c.blue = b;	732	{
365	mask_c.alpha = a;
366	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);	733	XRenderFillRectangle (cc.dpy, PictOpSrc, cc.msk, &mask_c, 0, 0, 1, 1);
367
368	XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	734	XRenderComposite (cc.dpy, PictOpAdd, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
		735	}
		736	}
369		737
370	XRenderFreePicture (dpy, src);	738	::swap (img->ref, ref);
371	XRenderFreePicture (dpy, dst);	739	::swap (img->pm , pm );
		740
		741	delete img;
		742	}
		743
		744	void
		745	rxvt_img::draw (rxvt_img *img, int op, nv mask)
		746	{
		747	unshare ();
		748
		749	composer cc (img, this);
		750
		751	if (mask != 1.)
		752	cc.mask (rgba (0, 0, 0, float_to_component (mask)));
		753
		754	XRenderComposite (cc.dpy, op, cc.src, cc.msk, cc.dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h);
372	}	755	}
373		756
374	rxvt_img *	757	rxvt_img *
375	rxvt_img::clone ()	758	rxvt_img::clone ()
376	{	759	{
377	return new rxvt_img (*this);	760	return new rxvt_img (*this);
378	}
379
380	static XRenderPictFormat *
381	find_alpha_format_for (Display dpy, XRenderPictFormat format)
382	{
383	if (format->direct.alphaMask)
384	return format; // already has alpha
385
386	// try to find a suitable alpha format, one bit alpha is enough for our purposes
387	if (format->type == PictTypeDirect)
388	for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
389	if (f->direct.alphaMask
390	&& f->type == PictTypeDirect
391	&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
392	&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
393	&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
394	return f;
395
396	// should be a very good fallback
397	return XRenderFindStandardFormat (dpy, PictStandardARGB32);
398	}	761	}
399		762
400	rxvt_img *	763	rxvt_img *
401	rxvt_img::reify ()	764	rxvt_img::reify ()
402	{	765	{
403	if (x == 0 && y == 0 && w == ref->w && h == ref->h)	766	if (x == 0 && y == 0 && w == ref->w && h == ref->h)
404	return clone ();	767	return clone ();
405		768
406	Display *dpy = s->display->dpy;	769	// add an alpha channel if...
407
408	bool alpha = !format->direct.alphaMask	770	bool alpha = !format->direct.alphaMask // pixmap has none yet
409	&& (x \|\| y)	771	&& (x \|\| y) // we need one because of non-zero offset
410	&& repeat == RepeatNone;	772	&& repeat == RepeatNone; // and we have no good pixels to fill with
411		773
412	rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);	774	composer cc (this, new rxvt_img (d, alpha ? find_alpha_format_for (d->dpy, format) : format,
413	img->alloc ();	775	0, 0, w, h, repeat));
414		776
415	Picture src = src_picture ();	777	if (repeat == RepeatNone)
416	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
417
418	if (alpha)
419	{	778	{
420	XRenderColor rc = { 0, 0, 0, 0 };	779	XRenderColor rc = { 0, 0, 0, 0 };
421	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles	780	XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
422	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h);	781	XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, 0, 0, 0, 0, x, y, ref->w, ref->h);
423	}	782	}
424	else	783	else
425	XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);	784	XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, -x, -y, 0, 0, 0, 0, w, h);
426		785
427	XRenderFreePicture (dpy, src);
428	XRenderFreePicture (dpy, dst);
429
430	return img;	786	return cc;
431	}	787	}
432		788
433	rxvt_img *	789	rxvt_img *
434	rxvt_img::sub_rect (int x, int y, int width, int height)	790	rxvt_img::sub_rect (int x, int y, int width, int height)
435	{	791	{
436	rxvt_img *img = clone ();	792	rxvt_img *img = clone ();
437		793
438	img->x += x;	794	img->x -= x;
439	img->y += y;	795	img->y -= y;
440		796
441	if (w != width \|\| h != height)	797	if (w != width \|\| h != height)
442	{	798	{
443	img->w = width;	799	img->w = width;
444	img->h = height;	800	img->h = height;
…		…
450		806
451	return img;	807	return img;
452	}	808	}
453		809
454	rxvt_img *	810	rxvt_img *
455	rxvt_img::transform (int new_width, int new_height, double matrix[9])	811	rxvt_img::transform (const nv matrix[3][3])
456	{	812	{
457	rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat);	813	return transform (mat3x3 (&matrix[0][0]));
458	img->alloc ();	814	}
459		815
460	Display *dpy = s->display->dpy;	816	rxvt_img *
461	Picture src = src_picture ();	817	rxvt_img::transform (const nv *matrix)
462	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);	818	{
		819	mat3x3 m (matrix);
		820
		821	// calculate new pixel bounding box coordinates
		822	nv rmin[2], rmax[2];
		823
		824	for (int i = 0; i < 2; ++i)
		825	{
		826	nv v;
		827
		828	v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v;
		829	v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v);
		830	v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		831	v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v);
		832	}
		833
		834	float sx = rmin [0] - x;
		835	float sy = rmin [1] - y;
		836
		837	// TODO: adjust matrix for subpixel accuracy
		838	int nx = floor (rmin [0]);
		839	int ny = floor (rmin [1]);
		840
		841	int new_width = ceil (rmax [0] - rmin [0]);
		842	int new_height = ceil (rmax [1] - rmin [1]);
		843
		844	mat3x3 inv = (mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y)).inverse ();
		845
		846	composer cc (this, new rxvt_img (d, format, nx, ny, new_width, new_height, repeat));
463		847
464	XTransform xfrm;	848	XTransform xfrm;
465		849
466	for (int i = 0; i < 3; ++i)	850	for (int i = 0; i < 3; ++i)
467	for (int j = 0; j < 3; ++j)	851	for (int j = 0; j < 3; ++j)
468	xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);	852	xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]);
469		853
470	#if 0
471	xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
472	xfrm.matrix [1][2] -= XDoubleToFixed (y);
473	#endif
474
475	XRenderSetPictureFilter (dpy, src, "good", 0, 0);	854	XRenderSetPictureFilter (cc.dpy, cc.src, "good", 0, 0);
476	XRenderSetPictureTransform (dpy, src, &xfrm);	855	XRenderSetPictureTransform (cc.dpy, cc.src, &xfrm);
477	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);	856	XRenderComposite (cc.dpy, PictOpSrc, cc.src, None, cc.dst, sx, sy, 0, 0, 0, 0, new_width, new_height);
478		857
479	XRenderFreePicture (dpy, src);
480	XRenderFreePicture (dpy, dst);
481
482	return img;	858	return cc;
483	}	859	}
484		860
485	rxvt_img *	861	rxvt_img *
486	rxvt_img::scale (int new_width, int new_height)	862	rxvt_img::scale (int new_width, int new_height)
487	{	863	{
488	if (w == new_width && h == new_height)	864	if (w == new_width && h == new_height)
489	return clone ();	865	return clone ();
490		866
491	double matrix[9] = {
492	w / (double)new_width, 0, 0,
493	0, h / (double)new_height, 0,
494	0, 0, 1
495	};
496
497	int old_repeat_mode = repeat;	867	int old_repeat_mode = repeat;
498	repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems	868	repeat = RepeatPad; // not right, but xrender can't properly scale it seems
499		869
500	rxvt_img *img = transform (new_width, new_height, matrix);	870	rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h));
501		871
502	repeat = old_repeat_mode;	872	repeat = old_repeat_mode;
503	img->repeat = repeat;	873	img->repeat = repeat;
504		874
505	return img;	875	return img;
506	}	876	}
507		877
508	rxvt_img *	878	rxvt_img *
509	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)	879	rxvt_img::rotate (int cx, int cy, nv phi)
510	{	880	{
511	double s = sin (phi);	881	move (-cx, -cy);
512	double c = cos (phi);	882	rxvt_img *img = transform (mat3x3::rotate (phi));
		883	move ( cx, cy);
		884	img->move (cx, cy);
513		885
514	double matrix[9] = {	886	return img;
515	c, -s, -c * x + s * y + x,
516	s, c, -s * x - c * y + y,
517	0, 0, 1
518	};
519
520	return transform (new_width, new_height, matrix);
521	}	887	}
522		888
523	rxvt_img *	889	rxvt_img *
524	rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg)	890	rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg)
525	{	891	{
526	if (new_format == format)	892	if (new_format == format)
527	return clone ();	893	return clone ();
528		894
529	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);	895	composer cc (this, new rxvt_img (d, new_format, x, y, w, h, repeat));
530	img->alloc ();
531		896
532	Display *dpy = s->display->dpy;
533	Picture src = src_picture ();
534	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
535	int op = PictOpSrc;	897	int op = PictOpSrc;
536		898
537	if (format->direct.alphaMask && !new_format->direct.alphaMask)	899	if (format->direct.alphaMask && !new_format->direct.alphaMask)
538	{	900	{
539	// does it have to be that complicated	901	// does it have to be that complicated
540	rgba c;
541	bg.get (c);
542
543	XRenderColor rc = { c.r, c.g, c.b, 0xffff };	902	XRenderColor rc = { bg.r, bg.g, bg.b, bg.a };
544	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);	903	XRenderFillRectangle (cc.dpy, PictOpSrc, cc.dst, &rc, 0, 0, w, h);
545		904
546	op = PictOpOver;	905	op = PictOpOver;
547	}	906	}
548		907
549	XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);	908	XRenderComposite (cc.dpy, op, cc.src, None, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
550		909
551	XRenderFreePicture (dpy, src);	910	return cc;
552	XRenderFreePicture (dpy, dst);	911	}
		912
		913	rxvt_img *
		914	rxvt_img::tint (const rgba &c)
		915	{
		916	composer cc (this);
		917	cc.mask (true);
		918	cc.fill (c);
		919
		920	XRenderComposite (cc.dpy, PictOpSrc, cc.src, cc.msk, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
		921
		922	return cc;
		923	}
		924
		925	rxvt_img *
		926	rxvt_img::shade (nv factor, rgba c)
		927	{
		928	clamp_it (factor, -1., 1.);
		929	factor++;
		930
		931	if (factor > 1)
		932	{
		933	c.r = c.r * (2 - factor);
		934	c.g = c.g * (2 - factor);
		935	c.b = c.b * (2 - factor);
		936	}
		937	else
		938	{
		939	c.r = c.r * factor;
		940	c.g = c.g * factor;
		941	c.b = c.b * factor;
		942	}
		943
		944	rxvt_img *img = this->tint (c);
		945
		946	if (factor > 1)
		947	{
		948	c.a = 0xffff;
		949	c.r =
		950	c.g =
		951	c.b = 0xffff * (factor - 1);
		952
		953	img->brightness (c.r, c.g, c.b, c.a);
		954	}
553		955
554	return img;	956	return img;
555	}	957	}
556		958
557	rxvt_img *	959	rxvt_img *
558	rxvt_img::blend (rxvt_img *img, double factor)	960	rxvt_img::filter (const char name, int nparams, nv params)
559	{	961	{
560	rxvt_img *img2 = clone ();	962	composer cc (this);
561	Display *dpy = s->display->dpy;
562	Picture src = img->src_picture ();
563	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
564	Picture mask = create_xrender_mask (dpy, img->pm, False);
565		963
566	XRenderColor mask_c;	964	XFixed *xparams = rxvt_temp_buf<XFixed> (nparams);
567		965
568	mask_c.alpha = float_to_component (factor);	966	for (int i = 0; i < nparams; ++i)
569	mask_c.red =	967	xparams [i] = XDoubleToFixed (params [i]);
570	mask_c.green =
571	mask_c.blue = 0;
572	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
573		968
		969	XRenderSetPictureFilter (cc.dpy, cc.src, name, xparams, nparams);
		970
574	XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);	971	XRenderComposite (cc.dpy, PictOpSrc, cc.src, 0, cc.dst, 0, 0, 0, 0, 0, 0, w, h);
575		972
576	XRenderFreePicture (dpy, src);
577	XRenderFreePicture (dpy, dst);
578	XRenderFreePicture (dpy, mask);
579
580	return img2;	973	return cc;
581	}	974	}
582		975
583	#endif	976	#endif
584		977

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Comparing rxvt-unicode/src/rxvtimg.C (file contents): Revision 1.47 by root, Thu Jun 7 19:06:26 2012 UTC vs. Revision 1.109 by sf-exg, Sat Jul 15 08:16:31 2017 UTC

Diff Legend

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.47 by root, Thu Jun 7 19:06:26 2012 UTC vs.
Revision 1.109 by sf-exg, Sat Jul 15 08:16:31 2017 UTC