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

Comparing rxvt-unicode/src/background.C (file contents):
Revision 1.213 by sf-exg, Sun May 13 21:12:01 2012 UTC vs.
Revision 1.258 by root, Thu May 22 18:54:32 2014 UTC

…		…
1	/----------------------------------------------------------------------	1	/----------------------------------------------------------------------
2	* File: background.C - former xpm.C	2	* File: background.C
3	----------------------------------------------------------------------	3	----------------------------------------------------------------------
4	*	4	*
5	* All portions of code are copyright by their respective author/s.	5	* All portions of code are copyright by their respective author/s.
6	* Copyright (c) 2005-2008 Marc Lehmann <schmorp@schmorp.de>	6	* Copyright (c) 2005-2008 Marc Lehmann <schmorp@schmorp.de>
7	* Copyright (c) 2007 Sasha Vasko <sasha@aftercode.net>	7	* Copyright (c) 2007 Sasha Vasko <sasha@aftercode.net>
8	* Copyright (c) 2010-2012 Emanuele Giaquinta <e.giaquinta@glauco.it>	8	* Copyright (c) 2010-2012 Emanuele Giaquinta <e.giaquinta@glauco.it>
9	*	9	*
10	* This program is free software; you can redistribute it and/or modify	10	* This program is free software; you can redistribute it and/or modify
11	* it under the terms of the GNU General Public License as published by	11	* it under the terms of the GNU General Public License as published by
12	* the Free Software Foundation; either version 2 of the License, or	12	* the Free Software Foundation; either version 3 of the License, or
13	* (at your option) any later version.	13	* (at your option) any later version.
14	*	14	*
15	* This program is distributed in the hope that it will be useful,	15	* This program is distributed in the hope that it will be useful,
16	* but WITHOUT ANY WARRANTY; without even the implied warranty of	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20	* You should have received a copy of the GNU General Public License	20	* You should have received a copy of the GNU General Public License
21	* along with this program; if not, write to the Free Software	21	* along with this program; if not, write to the Free Software
22	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.	22	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23	---------------------------------------------------------------------/	23	---------------------------------------------------------------------/
24		24
25	#include <math.h>
26	#include "../config.h" /* NECESSARY */	25	#include "../config.h" /* NECESSARY */
27	#include "rxvt.h" /* NECESSARY */	26	#include "rxvt.h" /* NECESSARY */
28		27
29	#if XRENDER
30	# include <X11/extensions/Xrender.h>
31	#endif
32
33	#ifndef FilterConvolution
34	#define FilterConvolution "convolution"
35	#endif
36
37	#ifndef RepeatPad
38	#define RepeatPad True
39	#endif
40
41	#ifdef HAVE_BG_PIXMAP	28	#ifdef HAVE_BG_PIXMAP
42	# if XRENDER
43	static Picture
44	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha)
45	{
46	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
47
48	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
49	XRenderPictureAttributes pa;
50	pa.repeat = True;
51	pa.component_alpha = component_alpha;
52	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat \| CPComponentAlpha, &pa);
53
54	XFreePixmap (dpy, pixmap);
55
56	return mask;
57	}
58	# endif
59		29
60	void	30	void
61	rxvt_term::bg_destroy ()	31	rxvt_term::bg_destroy ()
62	{	32	{
63	#ifdef HAVE_PIXBUF	33	# if BG_IMAGE_FROM_ROOT
64	if (pixbuf)	34	delete root_img;
65	g_object_unref (pixbuf);	35	root_img = 0;
66	#endif	36	# endif
67		37
68	if (bg_pixmap)	38	# if BG_IMAGE_FROM_FILE
69	XFreePixmap (dpy, bg_pixmap);	39	fimage.destroy ();
70	}	40	# endif
71
72	bool
73	rxvt_term::bg_set_position (int x, int y)
74	{
75
76	if (target_x != x
77	\|\| target_y != y)
78	{
79	target_x = x;
80	target_y = y;
81	return true;
82	}
83	return false;
84	}	41	}
85		42
86	bool	43	bool
87	rxvt_term::bg_window_size_sensitive ()	44	rxvt_term::bg_window_size_sensitive ()
88	{	45	{
89	# ifdef ENABLE_TRANSPARENCY	46	# if BG_IMAGE_FROM_ROOT
90	if (bg_flags & BG_IS_TRANSPARENT)	47	if (root_img)
91	return true;	48	return true;
92	# endif	49	# endif
93		50
94	# ifdef BG_IMAGE_FROM_FILE	51	# if BG_IMAGE_FROM_FILE
95	if (bg_flags & BG_IS_FROM_FILE)	52	if (fimage.img)
96	{	53	{
97	if (bg_flags & BG_IS_SIZE_SENSITIVE)	54	if ((fimage.flags & IM_IS_SIZE_SENSITIVE)
		55	\|\| fimage.img->w > szHint.width
		56	\|\| fimage.img->h > szHint.height)
98	return true;	57	return true;
99	}	58	}
100	# endif	59	# endif
101		60
102	return false;	61	return false;
103	}	62	}
104		63
105	bool	64	bool
106	rxvt_term::bg_window_position_sensitive ()	65	rxvt_term::bg_window_position_sensitive ()
107	{	66	{
108	# ifdef ENABLE_TRANSPARENCY	67	# if BG_IMAGE_FROM_ROOT
109	if (bg_flags & BG_IS_TRANSPARENT)	68	if (root_img)
110	return true;	69	return true;
111	# endif	70	# endif
112		71
113	# ifdef BG_IMAGE_FROM_FILE	72	# if BG_IMAGE_FROM_FILE
114	if (bg_flags & BG_IS_FROM_FILE)	73	if (fimage.img)
115	{	74	{
116	if (bg_flags & BG_ROOT_ALIGN)	75	if (fimage.flags & IM_ROOT_ALIGN)
117	return true;	76	return true;
118	}	77	}
119	# endif	78	# endif
120		79
121	return false;	80	return false;
122	}	81	}
123		82
124	# ifdef BG_IMAGE_FROM_FILE	83	# if BG_IMAGE_FROM_FILE
125	static inline int	84	static inline int
126	make_align_position (int align, int window_size, int image_size)	85	make_align_position (int align, int window_size, int image_size)
127	{	86	{
128	if (align >= 0 && align <= 100)	87	if (align >= 0 && align <= 100)
129	return lerp (0, window_size - image_size, align);	88	return lerp (0, window_size - image_size, align);
…		…
131	return lerp (window_size - image_size, window_size, align - 100);	90	return lerp (window_size - image_size, window_size, align - 100);
132	else	91	else
133	return lerp (-image_size, 0, align + 100);	92	return lerp (-image_size, 0, align + 100);
134	}	93	}
135		94
136	static inline int	95	static void
137	make_clip_rectangle (int pos, int size, int target_size, int &dst_pos, int &dst_size)	96	parse_style (const char *style, int &x, int &y, unsigned int &w, unsigned int &h, uint8_t &flags)
138	{	97	{
139	int src_pos = 0;	98	if (!strcasecmp (style, "tiled"))
140	dst_pos = pos;
141	dst_size = size;
142	if (pos < 0)
143	{
144	src_pos = -pos;
145	dst_pos = 0;
146	dst_size += pos;
147	}	99	{
148		100	flags = IM_TILE;
149	min_it (dst_size, target_size - dst_pos);	101	w = h = noScale;
150	return src_pos;	102	x = y = 0;
		103	}
		104	else if (!strcasecmp (style, "aspect-stretched"))
		105	{
		106	flags = IM_KEEP_ASPECT;
		107	w = h = windowScale;
		108	x = y = centerAlign;
		109	}
		110	else if (!strcasecmp (style, "stretched"))
		111	{
		112	flags = 0;
		113	w = h = windowScale;
		114	x = y = centerAlign;
		115	}
		116	else if (!strcasecmp (style, "centered"))
		117	{
		118	flags = 0;
		119	w = h = noScale;
		120	x = y = centerAlign;
		121	}
		122	else if (!strcasecmp (style, "root-tiled"))
		123	{
		124	flags = IM_TILE\|IM_ROOT_ALIGN;
		125	w = h = noScale;
		126	x = y = 0;
		127	}
151	}	128	}
152		129
153	bool	130	bool
154	rxvt_term::bg_set_geometry (const char *geom, bool update)	131	rxvt_image::set_geometry (const char *geom, bool update)
155	{	132	{
156	bool changed = false;	133	bool changed = false;
157	int geom_flags = 0;	134	int geom_flags = 0;
158	int x = h_align;	135	int x = h_align;
159	int y = v_align;	136	int y = v_align;
160	unsigned int w = h_scale;	137	unsigned int w = h_scale;
161	unsigned int h = v_scale;	138	unsigned int h = v_scale;
162	unsigned long new_flags = 0;	139	uint8_t new_flags = 0;
163		140
164	if (geom == NULL)	141	if (geom == NULL)
165	return false;	142	return false;
166		143
167	if (geom[0])	144	if (geom[0])
168	{	145	{
169	char **arr = rxvt_strsplit (':', geom);	146	char **arr = rxvt_strsplit (':', geom);
170		147
171	for (int i = 0; arr[i]; i++)	148	for (int i = 0; arr[i]; i++)
172	{	149	{
173	if (!strcasecmp (arr[i], "style=tiled"))	150	if (!strncasecmp (arr[i], "style=", 6))
174	{	151	{
175	new_flags = BG_TILE;	152	parse_style (arr[i] + 6, x, y, w, h, new_flags);
176	w = h = noScale;
177	x = y = 0;
178	geom_flags = WidthValue\|HeightValue\|XValue\|YValue;	153	geom_flags = WidthValue\|HeightValue\|XValue\|YValue;
179	}	154	}
180	else if (!strcasecmp (arr[i], "style=aspect-stretched"))
181	{
182	new_flags = BG_KEEP_ASPECT;
183	w = h = windowScale;
184	x = y = centerAlign;
185	geom_flags = WidthValue\|HeightValue\|XValue\|YValue;
186	}
187	else if (!strcasecmp (arr[i], "style=stretched"))
188	{
189	new_flags = 0;
190	w = h = windowScale;
191	geom_flags = WidthValue\|HeightValue;
192	}
193	else if (!strcasecmp (arr[i], "style=centered"))
194	{
195	new_flags = 0;
196	w = h = noScale;
197	x = y = centerAlign;
198	geom_flags = WidthValue\|HeightValue\|XValue\|YValue;
199	}
200	else if (!strcasecmp (arr[i], "style=root-tiled"))
201	{
202	new_flags = BG_TILE\|BG_ROOT_ALIGN;
203	w = h = noScale;
204	geom_flags = WidthValue\|HeightValue;
205	}
206	else if (!strcasecmp (arr[i], "op=tile"))	155	else if (!strcasecmp (arr[i], "op=tile"))
207	new_flags \|= BG_TILE;	156	new_flags \|= IM_TILE;
208	else if (!strcasecmp (arr[i], "op=keep-aspect"))	157	else if (!strcasecmp (arr[i], "op=keep-aspect"))
209	new_flags \|= BG_KEEP_ASPECT;	158	new_flags \|= IM_KEEP_ASPECT;
210	else if (!strcasecmp (arr[i], "op=root-align"))	159	else if (!strcasecmp (arr[i], "op=root-align"))
211	new_flags \|= BG_ROOT_ALIGN;	160	new_flags \|= IM_ROOT_ALIGN;
212		161
213	// deprecated	162	// deprecated
214	else if (!strcasecmp (arr[i], "tile"))	163	else if (!strcasecmp (arr[i], "tile"))
215	{	164	{
216	new_flags \|= BG_TILE;	165	new_flags \|= IM_TILE;
217	w = h = noScale;	166	w = h = noScale;
218	geom_flags \|= WidthValue\|HeightValue;	167	geom_flags \|= WidthValue\|HeightValue;
219	}	168	}
220	else if (!strcasecmp (arr[i], "propscale"))	169	else if (!strcasecmp (arr[i], "propscale"))
221	{	170	{
222	new_flags \|= BG_KEEP_ASPECT;	171	new_flags \|= IM_KEEP_ASPECT;
223	w = h = windowScale;	172	w = h = windowScale;
224	geom_flags \|= WidthValue\|HeightValue;	173	geom_flags \|= WidthValue\|HeightValue;
225	}	174	}
226	else if (!strcasecmp (arr[i], "hscale"))	175	else if (!strcasecmp (arr[i], "hscale"))
227	{	176	{
228	new_flags \|= BG_TILE;	177	new_flags \|= IM_TILE;
229	w = windowScale;	178	w = windowScale;
230	h = noScale;	179	h = noScale;
231	geom_flags \|= WidthValue\|HeightValue;	180	geom_flags \|= WidthValue\|HeightValue;
232	}	181	}
233	else if (!strcasecmp (arr[i], "vscale"))	182	else if (!strcasecmp (arr[i], "vscale"))
234	{	183	{
235	new_flags \|= BG_TILE;	184	new_flags \|= IM_TILE;
236	h = windowScale;	185	h = windowScale;
237	w = noScale;	186	w = noScale;
238	geom_flags \|= WidthValue\|HeightValue;	187	geom_flags \|= WidthValue\|HeightValue;
239	}	188	}
240	else if (!strcasecmp (arr[i], "scale"))	189	else if (!strcasecmp (arr[i], "scale"))
…		…
248	x = y = centerAlign;	197	x = y = centerAlign;
249	geom_flags \|= WidthValue\|HeightValue\|XValue\|YValue;	198	geom_flags \|= WidthValue\|HeightValue\|XValue\|YValue;
250	}	199	}
251	else if (!strcasecmp (arr[i], "root"))	200	else if (!strcasecmp (arr[i], "root"))
252	{	201	{
253	new_flags \|= BG_TILE\|BG_ROOT_ALIGN;	202	new_flags \|= IM_TILE\|IM_ROOT_ALIGN;
254	w = h = noScale;	203	w = h = noScale;
255	geom_flags \|= WidthValue\|HeightValue;	204	geom_flags \|= WidthValue\|HeightValue;
256	}	205	}
257		206
258	else	207	else
…		…
260	} /* done parsing ops */	209	} /* done parsing ops */
261		210
262	rxvt_free_strsplit (arr);	211	rxvt_free_strsplit (arr);
263	}	212	}
264		213
265	new_flags \|= bg_flags & ~BG_GEOMETRY_FLAGS;	214	new_flags \|= flags & ~IM_GEOMETRY_FLAGS;
266		215
267	if (!update)	216	if (!update)
268	{	217	{
269	if (!(geom_flags & XValue))	218	if (!(geom_flags & XValue))
270	x = y = defaultAlign;	219	x = y = defaultAlign;
…		…
277	h = w;	226	h = w;
278	else if (!(geom_flags & WidthValue))	227	else if (!(geom_flags & WidthValue))
279	w = h;	228	w = h;
280	}	229	}
281		230
282	min_it (w, 1000);
283	min_it (h, 1000);
284	clamp_it (x, -100, 200);	231	clamp_it (x, -100, 200);
285	clamp_it (y, -100, 200);	232	clamp_it (y, -100, 200);
286		233
287	if (bg_flags != new_flags	234	if (flags != new_flags
288	\|\| h_scale != w	235	\|\| h_scale != w
289	\|\| v_scale != h	236	\|\| v_scale != h
290	\|\| h_align != x	237	\|\| h_align != x
291	\|\| v_align != y)	238	\|\| v_align != y)
292	{	239	{
293	bg_flags = new_flags;	240	flags = new_flags;
294	h_scale = w;	241	h_scale = w;
295	v_scale = h;	242	v_scale = h;
296	h_align = x;	243	h_align = x;
297	v_align = y;	244	v_align = y;
298	changed = true;	245	changed = true;
299	}	246	}
300		247
		248	if (is_size_sensitive ())
		249	flags \|= IM_IS_SIZE_SENSITIVE;
		250	else
		251	flags &= ~IM_IS_SIZE_SENSITIVE;
		252
301	return changed;	253	return changed;
302	}	254	}
303		255
304	void	256	void
305	rxvt_term::get_image_geometry (int image_width, int image_height, int &w, int &h, int &x, int &y)	257	rxvt_term::render_image (rxvt_image &image)
306	{	258	{
		259	int image_width = image.img->w;
		260	int image_height = image.img->h;
307	int target_width = szHint.width;	261	int parent_width = szHint.width;
308	int target_height = szHint.height;	262	int parent_height = szHint.height;
		263	int h_scale = min (image.h_scale, 32767 * 100 / parent_width);
		264	int v_scale = min (image.v_scale, 32767 * 100 / parent_height);
309		265
		266	int w;
		267	int h;
		268	int x;
		269	int y;
		270
310	w = h_scale * target_width / 100;	271	w = h_scale * parent_width / 100;
311	h = v_scale * target_height / 100;	272	h = v_scale * parent_height / 100;
312		273
313	if (bg_flags & BG_KEEP_ASPECT)	274	if (image.flags & IM_KEEP_ASPECT)
314	{	275	{
315	float scale = (float)w / image_width;	276	float scale = (float)w / image_width;
316	min_it (scale, (float)h / image_height);	277	min_it (scale, (float)h / image_height);
317	w = image_width * scale + 0.5;	278	w = image_width * scale + 0.5;
318	h = image_height * scale + 0.5;	279	h = image_height * scale + 0.5;
319	}	280	}
320		281
321	if (!w) w = image_width;	282	if (!w) w = image_width;
322	if (!h) h = image_height;	283	if (!h) h = image_height;
323		284
324	if (bg_flags & BG_ROOT_ALIGN)	285	if (image.flags & IM_ROOT_ALIGN)
325	{	286	{
326	x = -target_x;	287	x = -parent_x;
327	y = -target_y;	288	y = -parent_y;
328	}	289	}
329	else	290	else
330	{	291	{
331	x = make_align_position (h_align, target_width, w);	292	x = make_align_position (image.h_align, parent_width, w);
332	y = make_align_position (v_align, target_height, h);	293	y = make_align_position (image.v_align, parent_height, h);
333	}
334
335	if (!(bg_flags & BG_TILE)
336	\|\| h_scale \|\| v_scale
337	\|\| (!(bg_flags & BG_ROOT_ALIGN) && (h_align \|\| v_align))
338	\|\| image_width > target_width \|\| image_height > target_height)
339	bg_flags \|= BG_IS_SIZE_SENSITIVE;
340	else
341	bg_flags &= ~BG_IS_SIZE_SENSITIVE;
342	}
343
344	# ifdef HAVE_PIXBUF
345	bool
346	rxvt_term::pixbuf_to_pixmap (GdkPixbuf *pixbuf, Pixmap pixmap, GC gc,
347	int src_x, int src_y, int dst_x, int dst_y,
348	unsigned int width, unsigned int height)
349	{
350	XImage *ximage;
351	char *line;
352	int width_r, width_g, width_b, width_a;
353	int sh_r, sh_g, sh_b, sh_a;
354	uint32_t alpha_mask;
355	int rowstride;
356	int channels;
357	unsigned char *row;
358
359	if (visual->c_class != TrueColor)
360	return false;
361
362	#if XRENDER
363	XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
364	if (format)
365	alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
366	else
367	#endif
368	alpha_mask = 0;
369
370	width_r = ecb_popcount32 (visual->red_mask);
371	width_g = ecb_popcount32 (visual->green_mask);
372	width_b = ecb_popcount32 (visual->blue_mask);
373	width_a = ecb_popcount32 (alpha_mask);
374
375	if (width_r > 8 \|\| width_g > 8 \|\| width_b > 8 \|\| width_a > 8)
376	return false;
377
378	sh_r = ecb_ctz32 (visual->red_mask);
379	sh_g = ecb_ctz32 (visual->green_mask);
380	sh_b = ecb_ctz32 (visual->blue_mask);
381	sh_a = ecb_ctz32 (alpha_mask);
382
383	if (width > 32767 \|\| height > 32767)
384	return false;
385
386	ximage = XCreateImage (dpy, visual, depth, ZPixmap, 0, 0,
387	width, height, 32, 0);
388	if (!ximage)
389	return false;
390
391	if (height > INT_MAX / ximage->bytes_per_line
392	\|\| !(ximage->data = (char )malloc (height ximage->bytes_per_line)))
393	{	294	}
394	XDestroyImage (ximage);
395	return false;
396	}
397		295
398	ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
399
400	rowstride = gdk_pixbuf_get_rowstride (pixbuf);
401	channels = gdk_pixbuf_get_n_channels (pixbuf);
402	row = gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * channels;
403	line = ximage->data;
404
405	rgba c (0, 0, 0);
406
407	if (channels == 4 && alpha_mask == 0)
408	{
409	pix_colors[Color_bg].get (c);
410	c.r >>= 8;
411	c.g >>= 8;
412	c.b >>= 8;
413	}
414
415	for (int y = 0; y < height; y++)
416	{
417	for (int x = 0; x < width; x++)
418	{
419	unsigned char pixel = row + x channels;
420	uint32_t value;
421	unsigned char r, g, b, a;
422
423	if (channels == 4)
424	{
425	a = pixel[3];
426	r = (pixel[0] * a + c.r * (0xff - a)) / 0xff;
427	g = (pixel[1] * a + c.g * (0xff - a)) / 0xff;
428	b = (pixel[2] * a + c.b * (0xff - a)) / 0xff;
429	}
430	else
431	{
432	a = 0xff;
433	r = pixel[0];
434	g = pixel[1];
435	b = pixel[2];
436	}
437
438	value = ((r >> (8 - width_r)) << sh_r)
439	\| ((g >> (8 - width_g)) << sh_g)
440	\| ((b >> (8 - width_b)) << sh_b)
441	\| ((a >> (8 - width_a)) << sh_a);
442
443	if (ximage->bits_per_pixel == 32)
444	((uint32_t *)line)[x] = value;
445	else
446	XPutPixel (ximage, x, y, value);
447	}
448
449	row += rowstride;
450	line += ximage->bytes_per_line;
451	}
452
453	XPutImage (dpy, pixmap, gc, ximage, 0, 0, dst_x, dst_y, width, height);
454	XDestroyImage (ximage);
455	return true;
456	}
457
458	bool
459	rxvt_term::render_image (bool transparent)
460	{
461	if (!pixbuf)
462	return false;
463
464	if (transparent
465	&& !(bg_flags & BG_HAS_RENDER))
466	return false;
467
468	GdkPixbuf *result;
469
470	int image_width = gdk_pixbuf_get_width (pixbuf);
471	int image_height = gdk_pixbuf_get_height (pixbuf);
472
473	int target_width = szHint.width;
474	int target_height = szHint.height;
475	int new_pmap_width = target_width;
476	int new_pmap_height = target_height;
477
478	int x = 0;
479	int y = 0;
480	int w = 0;
481	int h = 0;
482
483	get_image_geometry (image_width, image_height, w, h, x, y);
484
485	if (!(bg_flags & BG_ROOT_ALIGN)	296	if (!(image.flags & IM_ROOT_ALIGN)
486	&& (x >= target_width	297	&& (x >= parent_width
487	\|\| y >= target_height	298	\|\| y >= parent_height
488	\|\| x + w <= 0	299	\|\| x + w <= 0
489	\|\| y + h <= 0))	300	\|\| y + h <= 0))
490	return false;	301	return;
491		302
492	result = pixbuf;	303	rxvt_img *img = image.img->scale (w, h);
493		304
494	if (w != image_width	305	if (image.flags & IM_TILE)
495	\|\| h != image_height)	306	img->repeat_mode (RepeatNormal);
496	{
497	result = gdk_pixbuf_scale_simple (pixbuf,
498	w, h,
499	GDK_INTERP_BILINEAR);
500	}
501
502	if (!result)
503	return false;
504
505	bool ret = false;
506
507	XGCValues gcv;
508	GC gc;
509	Pixmap root_pmap;
510
511	image_width = gdk_pixbuf_get_width (result);
512	image_height = gdk_pixbuf_get_height (result);
513
514	if (transparent)
515	{
516	root_pmap = bg_pixmap;
517	bg_pixmap = None;
518	}
519	else	307	else
520	{	308	img->repeat_mode (RepeatNone);
521	if (bg_flags & BG_TILE)	309	img->sub_rect (-x, -y, parent_width, parent_height)->replace (img);
522	{
523	new_pmap_width = min (image_width, target_width);
524	new_pmap_height = min (image_height, target_height);
525	}
526	}
527		310
528	if (bg_pixmap == None	311	if (bg_img)
529	\|\| bg_pmap_width != new_pmap_width	312	img->draw (bg_img, PictOpOver, image.alpha * 1. / 0xffff);
530	\|\| bg_pmap_height != new_pmap_height)
531	{
532	if (bg_pixmap)
533	XFreePixmap (dpy, bg_pixmap);
534	bg_pixmap = XCreatePixmap (dpy, vt, new_pmap_width, new_pmap_height, depth);
535	bg_pmap_width = new_pmap_width;
536	bg_pmap_height = new_pmap_height;
537	}
538		313
539	gcv.foreground = pix_colors[Color_bg];
540	gc = XCreateGC (dpy, vt, GCForeground, &gcv);
541
542	if (gc)
543	{
544	if (bg_flags & BG_TILE)
545	{
546	Pixmap tile = XCreatePixmap (dpy, vt, image_width, image_height, depth);
547	pixbuf_to_pixmap (result, tile, gc,
548	0, 0,
549	0, 0,
550	image_width, image_height);
551
552	gcv.tile = tile;
553	gcv.fill_style = FillTiled;
554	gcv.ts_x_origin = x;
555	gcv.ts_y_origin = y;
556	XChangeGC (dpy, gc, GCFillStyle \| GCTile \| GCTileStipXOrigin \| GCTileStipYOrigin, &gcv);
557
558	XFillRectangle (dpy, bg_pixmap, gc, 0, 0, new_pmap_width, new_pmap_height);
559	XFreePixmap (dpy, tile);
560	}
561	else
562	{
563	int src_x, src_y, dst_x, dst_y;
564	int dst_width, dst_height;
565
566	src_x = make_clip_rectangle (x, image_width , new_pmap_width , dst_x, dst_width );
567	src_y = make_clip_rectangle (y, image_height, new_pmap_height, dst_y, dst_height);
568
569	if (dst_x > 0 \|\| dst_y > 0
570	\|\| dst_x + dst_width < new_pmap_width
571	\|\| dst_y + dst_height < new_pmap_height)
572	XFillRectangle (dpy, bg_pixmap, gc, 0, 0, new_pmap_width, new_pmap_height);
573
574	if (dst_x < new_pmap_width && dst_y < new_pmap_height)
575	pixbuf_to_pixmap (result, bg_pixmap, gc,
576	src_x, src_y,
577	dst_x, dst_y,
578	dst_width, dst_height);
579	}
580
581	#if XRENDER
582	if (transparent)
583	{
584	XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);	314	XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
		315	img->convert_format (format, pix_colors [Color_bg])->replace (img);
585		316
586	Picture src = XRenderCreatePicture (dpy, root_pmap, format, 0, 0);	317	delete bg_img;
587		318	bg_img = img;
588	Picture dst = XRenderCreatePicture (dpy, bg_pixmap, format, 0, 0);
589
590	Picture mask = create_xrender_mask (dpy, vt, False, False);
591
592	XRenderColor mask_c;
593
594	mask_c.alpha = 0x8000;
595	mask_c.red =
596	mask_c.green =
597	mask_c.blue = 0;
598	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
599
600	XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, target_width, target_height);
601
602	XRenderFreePicture (dpy, src);
603	XRenderFreePicture (dpy, dst);
604	XRenderFreePicture (dpy, mask);
605	}
606	#endif
607
608	XFreeGC (dpy, gc);
609
610	ret = true;
611	}
612
613	if (result != pixbuf)
614	g_object_unref (result);
615
616	if (transparent)
617	XFreePixmap (dpy, root_pmap);
618
619	return ret;
620	}	319	}
621	# endif /* HAVE_PIXBUF */
622		320
623	bool	321	rxvt_image::rxvt_image ()
624	rxvt_term::bg_set_file (const char *file)	322	{
		323	alpha = 0xffff;
		324	flags = 0;
		325	h_scale =
		326	v_scale = defaultScale;
		327	h_align =
		328	v_align = defaultAlign;
		329
		330	img = 0;
		331	}
		332
		333	void
		334	rxvt_image::set_file_geometry (rxvt_screen s, const char file)
625	{	335	{
626	if (!file \|\| !*file)	336	if (!file \|\| !*file)
627	return false;	337	return;
628		338
629	bool ret = false;
630	const char *p = strchr (file, ';');	339	const char *p = strchr (file, ';');
631		340
632	if (p)	341	if (p)
633	{	342	{
634	size_t len = p - file;	343	size_t len = p - file;
…		…
636	memcpy (f, file, len);	345	memcpy (f, file, len);
637	f[len] = '\0';	346	f[len] = '\0';
638	file = f;	347	file = f;
639	}	348	}
640		349
641	# ifdef HAVE_PIXBUF	350	set_file (s, file);
642	GdkPixbuf *image = gdk_pixbuf_new_from_file (file, NULL);	351	alpha = 0x8000;
643	if (image)	352	set_geometry (p ? p + 1 : "");
644	{	353	}
645	if (pixbuf)
646	g_object_unref (pixbuf);
647	pixbuf = image;
648	bg_flags \|= BG_IS_FROM_FILE;
649	ret = true;
650	}
651	# endif
652		354
653	if (ret)	355	void
654	{	356	rxvt_image::set_file (rxvt_screen s, const char file)
655	if (p)	357	{
656	bg_set_geometry (p + 1);	358	rxvt_img *img2 = rxvt_img::new_from_file (s, file);
657	else	359	delete img;
658	bg_set_default_geometry ();	360	img = img2;
659	}
660
661	return ret;
662	}	361	}
663		362
664	# endif /* BG_IMAGE_FROM_FILE */	363	# endif /* BG_IMAGE_FROM_FILE */
665		364
666	# ifdef ENABLE_TRANSPARENCY
667	bool	365	bool
668	rxvt_term::bg_set_blur (const char *geom)	366	image_effects::set_blur (const char *geom)
669	{	367	{
670	bool changed = false;	368	bool changed = false;
671	unsigned int hr, vr;	369	unsigned int hr, vr;
672	int junk;	370	int junk;
673	int geom_flags = XParseGeometry (geom, &junk, &junk, &hr, &vr);	371	int geom_flags = XParseGeometry (geom, &junk, &junk, &hr, &vr);
…		…
694		392
695	return changed;	393	return changed;
696	}	394	}
697		395
698	bool	396	bool
699	rxvt_term::bg_set_tint (rxvt_color &new_tint)	397	image_effects::set_tint (const rxvt_color &new_tint)
700	{	398	{
701	if (!(bg_flags & BG_TINT_SET) \|\| tint != new_tint)	399	if (!tint_set \|\| tint != new_tint)
702	{	400	{
703	tint = new_tint;	401	tint = new_tint;
704	bg_flags \|= BG_TINT_SET;	402	tint_set = true;
705
706	rgba c;
707	tint.get (c);
708	if ((c.r <= 0x00ff \|\| c.r >= 0xff00)
709	&& (c.g <= 0x00ff \|\| c.g >= 0xff00)
710	&& (c.b <= 0x00ff \|\| c.b >= 0xff00))
711	bg_flags \|= BG_TINT_BITAND;
712	else
713	bg_flags &= ~BG_TINT_BITAND;
714		403
715	return true;	404	return true;
716	}	405	}
717		406
718	return false;	407	return false;
719	}	408	}
720		409
721	bool	410	bool
722	rxvt_term::bg_set_shade (const char *shade_str)	411	image_effects::set_shade (const char *shade_str)
723	{	412	{
724	int new_shade = atoi (shade_str);	413	int new_shade = atoi (shade_str);
725		414
726	clamp_it (new_shade, -100, 200);	415	clamp_it (new_shade, -100, 200);
727	if (new_shade < 0)	416	if (new_shade < 0)
…		…
734	}	423	}
735		424
736	return false;	425	return false;
737	}	426	}
738		427
739	#if XRENDER	428	# if BG_IMAGE_FROM_ROOT
740	static void
741	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)
742	{
743	double sigma = radius / 2.0;
744	double scale = sqrt (2.0 * M_PI) * sigma;
745	double sum = 0.0;
746
747	for (int i = 0; i < width; i++)
748	{
749	double x = i - width / 2;
750	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
751	sum += kernel[i];
752	}
753
754	params[0] = XDoubleToFixed (width);
755	params[1] = XDoubleToFixed (1);
756
757	for (int i = 0; i < width; i++)
758	params[i+2] = XDoubleToFixed (kernel[i] / sum);
759	}
760	#endif
761
762	bool
763	rxvt_term::blur_pixmap (Pixmap pixmap, int width, int height)
764	{
765	bool ret = false;
766	#if XRENDER
767	if (!(bg_flags & BG_HAS_RENDER_CONV))
768	return false;
769
770	int size = max (h_blurRadius, v_blurRadius) * 2 + 1;
771	double kernel = (double )malloc (size * sizeof (double));
772	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
773
774	XRenderPictureAttributes pa;
775	XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
776
777	pa.repeat = RepeatPad;
778	Picture src = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
779	Pixmap tmp = XCreatePixmap (dpy, pixmap, width, height, depth);
780	Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa);
781	XFreePixmap (dpy, tmp);
782
783	if (kernel && params)
784	{
785	size = h_blurRadius * 2 + 1;
786	get_gaussian_kernel (h_blurRadius, size, kernel, params);
787
788	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
789	XRenderComposite (dpy,
790	PictOpSrc,
791	src,
792	None,
793	dst,
794	0, 0,
795	0, 0,
796	0, 0,
797	width, height);
798
799	::swap (src, dst);
800
801	size = v_blurRadius * 2 + 1;
802	get_gaussian_kernel (v_blurRadius, size, kernel, params);
803	::swap (params[0], params[1]);
804
805	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
806	XRenderComposite (dpy,
807	PictOpSrc,
808	src,
809	None,
810	dst,
811	0, 0,
812	0, 0,
813	0, 0,
814	width, height);
815
816	ret = true;
817	}
818
819	free (kernel);
820	free (params);
821	XRenderFreePicture (dpy, src);
822	XRenderFreePicture (dpy, dst);
823	#endif
824	return ret;
825	}
826
827	bool
828	rxvt_term::tint_pixmap (Pixmap pixmap, int width, int height)
829	{
830	bool ret = false;
831
832	if (shade == 100 && (bg_flags & BG_TINT_BITAND))
833	{
834	XGCValues gcv;
835	GC gc;
836
837	/* In this case we can tint image server-side getting significant
838	* performance improvements, as we eliminate XImage transfer
839	*/
840	gcv.foreground = Pixel (tint);
841	gcv.function = GXand;
842	gcv.fill_style = FillSolid;
843	gc = XCreateGC (dpy, pixmap, GCFillStyle \| GCForeground \| GCFunction, &gcv);
844	if (gc)
845	{
846	XFillRectangle (dpy, pixmap, gc, 0, 0, width, height);
847	ret = true;
848	XFreeGC (dpy, gc);
849	}
850	}
851	# if XRENDER
852	else if (bg_flags & BG_HAS_RENDER)
853	{
854	rgba c (rgba::MAX_CC, rgba::MAX_CC, rgba::MAX_CC);
855
856	if (bg_flags & BG_TINT_SET)
857	tint.get (c);
858
859	if (shade <= 100)
860	{
861	c.r = c.r * shade / 100;
862	c.g = c.g * shade / 100;
863	c.b = c.b * shade / 100;
864	}
865	else
866	{
867	c.r = c.r * (200 - shade) / 100;
868	c.g = c.g * (200 - shade) / 100;
869	c.b = c.b * (200 - shade) / 100;
870	}
871
872	XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
873
874	Picture back_pic = XRenderCreatePicture (dpy, pixmap, format, 0, 0);
875
876	Picture overlay_pic = create_xrender_mask (dpy, pixmap, True, False);
877
878	Picture mask_pic = create_xrender_mask (dpy, pixmap, True, True);
879
880	XRenderColor mask_c;
881
882	mask_c.alpha = 0xffff;
883	mask_c.red =
884	mask_c.green =
885	mask_c.blue = 0;
886	XRenderFillRectangle (dpy, PictOpSrc, overlay_pic, &mask_c, 0, 0, 1, 1);
887
888	mask_c.alpha = 0;
889	mask_c.red = 0xffff - c.r;
890	mask_c.green = 0xffff - c.g;
891	mask_c.blue = 0xffff - c.b;
892	XRenderFillRectangle (dpy, PictOpSrc, mask_pic, &mask_c, 0, 0, 1, 1);
893
894	XRenderComposite (dpy, PictOpOver, overlay_pic, mask_pic, back_pic, 0, 0, 0, 0, 0, 0, width, height);
895
896	if (shade > 100)
897	{
898	mask_c.alpha = 0;
899	mask_c.red =
900	mask_c.green =
901	mask_c.blue = 0xffff * (shade - 100) / 100;
902	XRenderFillRectangle (dpy, PictOpSrc, overlay_pic, &mask_c, 0, 0, 1, 1);
903
904	XRenderComposite (dpy, PictOpOver, overlay_pic, None, back_pic, 0, 0, 0, 0, 0, 0, width, height);
905	}
906
907	ret = true;
908
909	XRenderFreePicture (dpy, mask_pic);
910	XRenderFreePicture (dpy, overlay_pic);
911	XRenderFreePicture (dpy, back_pic);
912	}
913	# endif
914
915	return ret;
916	}
917
918	/*	429	/*
919	* Builds a pixmap of the same size as the terminal window that contains	430	* Builds a pixmap of the same size as the terminal window that contains
920	* the tiled portion of the root pixmap that is supposed to be covered by	431	* the tiled portion of the root pixmap that is supposed to be covered by
921	* our window.	432	* our window.
922	*/	433	*/
923	bool	434	void
924	rxvt_term::make_transparency_pixmap ()	435	rxvt_term::render_root_image ()
925	{	436	{
926	bool ret = false;
927
928	/* root dimensions may change from call to call - but Display structure should	437	/* root dimensions may change from call to call - but Display structure should
929	* be always up-to-date, so let's use it :	438	* be always up-to-date, so let's use it :
930	*/	439	*/
931	int screen = display->screen;	440	int screen = display->screen;
932	int root_depth = DefaultDepth (dpy, screen);
933	int root_width = DisplayWidth (dpy, screen);	441	int root_width = DisplayWidth (dpy, screen);
934	int root_height = DisplayHeight (dpy, screen);	442	int root_height = DisplayHeight (dpy, screen);
935	unsigned int root_pmap_width, root_pmap_height;
936	int window_width = szHint.width;	443	int parent_width = szHint.width;
937	int window_height = szHint.height;	444	int parent_height = szHint.height;
938	int sx, sy;	445	int sx, sy;
939	XGCValues gcv;
940	GC gc;
941		446
942	sx = target_x;	447	sx = parent_x;
943	sy = target_y;	448	sy = parent_y;
944		449
945	/* check if we are outside of the visible part of the virtual screen : */	450	/* check if we are outside of the visible part of the virtual screen : */
946	if (sx + window_width <= 0 \|\| sy + window_height <= 0	451	if (sx + parent_width <= 0 \|\| sy + parent_height <= 0
947	\|\| sx >= root_width \|\| sy >= root_height)	452	\|\| sx >= root_width \|\| sy >= root_height)
948	return 0;	453	return;
949		454
950	// validate root pixmap and get its size	455	while (sx < 0) sx += root_img->w;
951	if (root_pixmap != None)	456	while (sy < 0) sy += root_img->h;
952	{
953	Window wdummy;
954	int idummy;
955	unsigned int udummy;
956		457
957	allowedxerror = -1;	458	rxvt_img *img = root_img->sub_rect (sx, sy, parent_width, parent_height);
958		459
959	if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pmap_width, &root_pmap_height, &udummy, &udummy))	460	if (root_effects.need_blur ())
960	root_pixmap = None;	461	img->blur (root_effects.h_blurRadius, root_effects.v_blurRadius)->replace (img);
961		462
962	allowedxerror = 0;	463	if (root_effects.need_tint ())
963	}	464	{
		465	rgba c (rgba::MAX_CC, rgba::MAX_CC, rgba::MAX_CC);
964		466
965	Pixmap recoded_root_pmap = root_pixmap;	467	if (root_effects.tint_set)
966		468	root_effects.tint.get (c);
967	if (root_pixmap != None && root_depth != depth)	469	rxvt_img::nv factor = root_effects.shade / 100. - 1.;
		470	img->shade (factor, c)->replace (img);
968	{	471	}
969	#if XRENDER
970	if (bg_flags & BG_HAS_RENDER)
971	{
972	recoded_root_pmap = XCreatePixmap (dpy, vt, root_pmap_width, root_pmap_height, depth);
973		472
974	XRenderPictFormat *src_format = XRenderFindVisualFormat (dpy, DefaultVisual (dpy, screen));
975	Picture src = XRenderCreatePicture (dpy, root_pixmap, src_format, 0, 0);
976
977	XRenderPictFormat *dst_format = XRenderFindVisualFormat (dpy, visual);	473	XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
978	Picture dst = XRenderCreatePicture (dpy, recoded_root_pmap, dst_format, 0, 0);	474	img->convert_format (format, pix_colors [Color_bg])->replace (img);
979		475
980	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, root_pmap_width, root_pmap_height);	476	delete bg_img;
981		477	bg_img = img;
982	XRenderFreePicture (dpy, src);
983	XRenderFreePicture (dpy, dst);
984	}
985	else
986	#endif
987	recoded_root_pmap = None;
988	}
989
990	if (recoded_root_pmap == None)
991	return 0;
992
993	if (bg_pixmap == None
994	\|\| bg_pmap_width != window_width
995	\|\| bg_pmap_height != window_height)
996	{
997	if (bg_pixmap)
998	XFreePixmap (dpy, bg_pixmap);
999	bg_pixmap = XCreatePixmap (dpy, vt, window_width, window_height, depth);
1000	bg_pmap_width = window_width;
1001	bg_pmap_height = window_height;
1002	}
1003
1004	/* straightforward pixmap copy */
1005	while (sx < 0) sx += root_pmap_width;
1006	while (sy < 0) sy += root_pmap_height;
1007
1008	gcv.tile = recoded_root_pmap;
1009	gcv.fill_style = FillTiled;
1010	gcv.ts_x_origin = -sx;
1011	gcv.ts_y_origin = -sy;
1012	gc = XCreateGC (dpy, vt, GCFillStyle \| GCTile \| GCTileStipXOrigin \| GCTileStipYOrigin, &gcv);
1013
1014	if (gc)
1015	{
1016	XFillRectangle (dpy, bg_pixmap, gc, 0, 0, window_width, window_height);
1017	ret = true;
1018	bool need_blur = h_blurRadius && v_blurRadius;
1019	bool need_tint = shade != 100 \|\| (bg_flags & BG_TINT_SET);
1020
1021	if (!(bg_flags & BG_CLIENT_RENDER))
1022	{
1023	if (need_blur)
1024	{
1025	if (blur_pixmap (bg_pixmap, window_width, window_height))
1026	need_blur = false;
1027	}
1028	if (need_tint)
1029	{
1030	if (tint_pixmap (bg_pixmap, window_width, window_height))
1031	need_tint = false;
1032	}
1033	if (need_tint)
1034	{
1035	XImage *ximage = XGetImage (dpy, bg_pixmap, 0, 0, bg_pmap_width, bg_pmap_height, AllPlanes, ZPixmap);
1036	if (ximage)
1037	{
1038	/* our own client-side tinting */
1039	tint_ximage (ximage);
1040
1041	XPutImage (dpy, bg_pixmap, gc, ximage, 0, 0, 0, 0, ximage->width, ximage->height);
1042	XDestroyImage (ximage);
1043	}
1044	}
1045	} /* server side rendering completed */
1046
1047	XFreeGC (dpy, gc);
1048	}
1049
1050	if (recoded_root_pmap != root_pixmap)
1051	XFreePixmap (dpy, recoded_root_pmap);
1052
1053	return ret;
1054	}	478	}
		479	# endif /* BG_IMAGE_FROM_ROOT */
1055		480
1056	void	481	void
1057	rxvt_term::bg_set_root_pixmap ()
1058	{
1059	Pixmap new_root_pixmap = get_pixmap_property (xa[XA_XROOTPMAP_ID]);
1060	if (new_root_pixmap == None)
1061	new_root_pixmap = get_pixmap_property (xa[XA_ESETROOT_PMAP_ID]);
1062
1063	root_pixmap = new_root_pixmap;
1064	}
1065	# endif /* ENABLE_TRANSPARENCY */
1066
1067	bool
1068	rxvt_term::bg_render ()	482	rxvt_term::bg_render ()
1069	{	483	{
1070	bool transparent = false;	484	if (bg_flags & BG_INHIBIT_RENDER)
		485	return;
1071		486
1072	bg_invalidate ();	487	delete bg_img;
1073	# ifdef ENABLE_TRANSPARENCY	488	bg_img = 0;
		489	bg_flags = 0;
		490
		491	if (!mapped)
		492	return;
		493
		494	# if BG_IMAGE_FROM_ROOT
		495	if (root_img)
		496	{
		497	render_root_image ();
1074	if (bg_flags & BG_IS_TRANSPARENT)	498	bg_flags \|= BG_IS_TRANSPARENT;
1075	{	499	}
1076	/* we need to re-generate transparency pixmap in that case ! */
1077	transparent = make_transparency_pixmap ();
1078	if (transparent)
1079	bg_flags \|= BG_IS_VALID;
1080	}
1081	# endif	500	# endif
1082		501
1083	# ifdef BG_IMAGE_FROM_FILE	502	# if BG_IMAGE_FROM_FILE
1084	if (bg_flags & BG_IS_FROM_FILE)	503	if (fimage.img)
1085	{	504	render_image (fimage);
1086	if (render_image (transparent))
1087	bg_flags \|= BG_IS_VALID;
1088	}
1089	# endif	505	# endif
1090
1091	if (!(bg_flags & BG_IS_VALID))
1092	{
1093	if (bg_pixmap != None)
1094	{
1095	XFreePixmap (dpy, bg_pixmap);
1096	bg_pixmap = None;
1097	}
1098	}
1099		506
1100	scr_recolour (false);	507	scr_recolour (false);
1101	bg_flags \|= BG_NEEDS_REFRESH;	508	bg_flags \|= BG_NEEDS_REFRESH;
1102		509
1103	bg_valid_since = ev::now ();	510	bg_valid_since = ev::now ();
1104
1105	return true;
1106	}	511	}
1107		512
1108	void	513	void
1109	rxvt_term::bg_init ()	514	rxvt_term::bg_init ()
1110	{	515	{
1111	#ifdef ENABLE_TRANSPARENCY	516	#if BG_IMAGE_FROM_ROOT
1112	shade = 100;	517	if (option (Opt_transparent))
		518	{
		519	if (rs [Rs_blurradius])
		520	root_effects.set_blur (rs [Rs_blurradius]);
		521
		522	if (ISSET_PIXCOLOR (Color_tint))
		523	root_effects.set_tint (pix_colors_focused [Color_tint]);
		524
		525	if (rs [Rs_shade])
		526	root_effects.set_shade (rs [Rs_shade]);
		527
		528	rxvt_img::new_from_root (this)->replace (root_img);
		529	XSelectInput (dpy, display->root, PropertyChangeMask);
		530	rootwin_ev.start (display, display->root);
		531	}
1113	#endif	532	#endif
1114		533
1115	bg_flags &= ~(BG_HAS_RENDER \| BG_HAS_RENDER_CONV);	534	#if BG_IMAGE_FROM_FILE
1116	#if XRENDER	535	if (rs[Rs_backgroundPixmap])
1117	int major, minor;
1118	if (XRenderQueryVersion (dpy, &major, &minor))
1119	bg_flags \|= BG_HAS_RENDER;
1120	XFilters *filters = XRenderQueryFilters (dpy, vt);
1121	if (filters)
1122	{	536	{
1123	for (int i = 0; i < filters->nfilter; i++)	537	fimage.set_file_geometry (this, rs[Rs_backgroundPixmap]);
1124	if (!strcmp (filters->filter[i], FilterConvolution))	538	if (!bg_window_position_sensitive ())
1125	bg_flags \|= BG_HAS_RENDER_CONV;	539	update_background ();
1126
1127	XFree (filters);
1128	}	540	}
1129	#endif	541	#endif
1130	}	542	}
1131		543
1132	#endif /* HAVE_BG_PIXMAP */	544	#endif /* HAVE_BG_PIXMAP */
1133
1134	#ifdef ENABLE_TRANSPARENCY
1135	/* based on code from aterm-0.4.2 */
1136
1137	static inline void
1138	fill_lut (uint32_t *lookup, uint32_t mask, int sh, unsigned short low, unsigned short high)
1139	{
1140	for (int i = 0; i <= mask >> sh; i++)
1141	{
1142	uint32_t tmp;
1143	tmp = i * high;
1144	tmp += (mask >> sh) * low;
1145	lookup[i] = (tmp / 0xffff) << sh;
1146	}
1147	}
1148
1149	void
1150	rxvt_term::tint_ximage (XImage *ximage)
1151	{
1152	unsigned int size_r, size_g, size_b;
1153	int sh_r, sh_g, sh_b;
1154	uint32_t mask_r, mask_g, mask_b;
1155	uint32_t lookup, lookup_r, lookup_g, lookup_b;
1156	unsigned short low;
1157	int host_byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
1158
1159	if (visual->c_class != TrueColor \|\| ximage->format != ZPixmap) return;
1160
1161	/* for convenience */
1162	mask_r = visual->red_mask;
1163	mask_g = visual->green_mask;
1164	mask_b = visual->blue_mask;
1165
1166	/* boring lookup table pre-initialization */
1167	sh_r = ecb_ctz32 (mask_r);
1168	sh_g = ecb_ctz32 (mask_g);
1169	sh_b = ecb_ctz32 (mask_b);
1170
1171	size_r = mask_r >> sh_r;
1172	size_g = mask_g >> sh_g;
1173	size_b = mask_b >> sh_b;
1174
1175	if (size_r++ > 255 \|\| size_g++ > 255 \|\| size_b++ > 255)
1176	return;
1177
1178	lookup = (uint32_t )malloc (sizeof (uint32_t) (size_r + size_g + size_b));
1179	lookup_r = lookup;
1180	lookup_g = lookup + size_r;
1181	lookup_b = lookup + size_r + size_g;
1182
1183	rgba c (rgba::MAX_CC, rgba::MAX_CC, rgba::MAX_CC);
1184
1185	if (bg_flags & BG_TINT_SET)
1186	tint.get (c);
1187
1188	/* prepare limits for color transformation (each channel is handled separately) */
1189	if (shade > 100)
1190	{
1191	c.r = c.r * (200 - shade) / 100;
1192	c.g = c.g * (200 - shade) / 100;
1193	c.b = c.b * (200 - shade) / 100;
1194
1195	low = 0xffff * (shade - 100) / 100;
1196	}
1197	else
1198	{
1199	c.r = c.r * shade / 100;
1200	c.g = c.g * shade / 100;
1201	c.b = c.b * shade / 100;
1202
1203	low = 0;
1204	}
1205
1206	/* fill our lookup tables */
1207	fill_lut (lookup_r, mask_r, sh_r, low, c.r);
1208	fill_lut (lookup_g, mask_g, sh_g, low, c.g);
1209	fill_lut (lookup_b, mask_b, sh_b, low, c.b);
1210
1211	/* apply table to input image (replacing colors by newly calculated ones) */
1212	if (ximage->bits_per_pixel == 32
1213	&& ximage->byte_order == host_byte_order)
1214	{
1215	char *line = ximage->data;
1216
1217	for (int y = 0; y < ximage->height; y++)
1218	{
1219	uint32_t p = (uint32_t )line;
1220	for (int x = 0; x < ximage->width; x++)
1221	{
1222	p = lookup_r[(p & mask_r) >> sh_r] \|
1223	lookup_g[(*p & mask_g) >> sh_g] \|
1224	lookup_b[(*p & mask_b) >> sh_b];
1225	p++;
1226	}
1227	line += ximage->bytes_per_line;
1228	}
1229	}
1230	else
1231	{
1232	for (int y = 0; y < ximage->height; y++)
1233	for (int x = 0; x < ximage->width; x++)
1234	{
1235	unsigned long pixel = XGetPixel (ximage, x, y);
1236	pixel = lookup_r[(pixel & mask_r) >> sh_r] \|
1237	lookup_g[(pixel & mask_g) >> sh_g] \|
1238	lookup_b[(pixel & mask_b) >> sh_b];
1239	XPutPixel (ximage, x, y, pixel);
1240	}
1241	}
1242
1243	free (lookup);
1244	}
1245	#endif /* ENABLE_TRANSPARENCY */

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Comparing rxvt-unicode/src/background.C (file contents): Revision 1.213 by sf-exg, Sun May 13 21:12:01 2012 UTC vs. Revision 1.258 by root, Thu May 22 18:54:32 2014 UTC

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Comparing rxvt-unicode/src/background.C (file contents):
Revision 1.213 by sf-exg, Sun May 13 21:12:01 2012 UTC vs.
Revision 1.258 by root, Thu May 22 18:54:32 2014 UTC