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Comparing rxvt-unicode/src/background.C (file contents):
Revision 1.158 by sf-exg, Wed Aug 10 07:28:36 2011 UTC vs.
Revision 1.248 by sf-exg, Sun Dec 30 11:34:43 2012 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 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 2 of the License, or
13	* (at your option) any later version.	13	* (at your option) any later version.
…		…
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 <cmath>
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	/*
38	* Pixmap geometry string interpretation :
39	* Each geometry string contains zero or one scale/position
40	* adjustment and may optionally be followed by a colon and one or more
41	* colon-delimited pixmap operations.
42	* The following table shows the valid geometry strings and their
43	* effects on the background image :
44	*
45	* WxH+X+Y Set scaling to W% by H%, and position to X% by Y%.
46	* W and H are percentages of the terminal window size.
47	* X and Y are also percentages; e.g., +50+50 centers
48	* the image in the window.
49	*
50	* Pixmap Operations : (should be prepended by a colon)
51	* tile Tile image. Scaling/position modifiers above will affect
52	* the tile size and origin.
53	* propscale When scaling, scale proportionally. That is, maintain the
54	* proper aspect ratio for the image. Any portion of the
55	* background not covered by the image is filled with the
56	* current background color.
57	* scale Scale both up and down
58	*/
59
60	#ifdef HAVE_BG_PIXMAP	28	#ifdef HAVE_BG_PIXMAP
		29
61	void	30	void
62	rxvt_term::bg_destroy ()	31	rxvt_term::bg_destroy ()
63	{	32	{
64	#ifdef HAVE_AFTERIMAGE	33	# if BG_IMAGE_FROM_ROOT
65	if (original_asim)	34	delete root_img;
66	safe_asimage_destroy (original_asim);	35	root_img = 0;
67	if (asv)
68	destroy_asvisual (asv, 0);
69	if (asimman)
70	destroy_image_manager (asimman, 0);
71	#endif	36	# endif
72		37
73	#ifdef HAVE_PIXBUF	38	# if BG_IMAGE_FROM_FILE
74	if (pixbuf)	39	fimage.destroy ();
75	g_object_unref (pixbuf);
76	#endif	40	# endif
77
78	if (bg_pixmap)
79	XFreePixmap (dpy, bg_pixmap);
80	}	41	}
81		42
82	bool	43	bool
83	rxvt_term::bg_set_position (int x, int y)	44	rxvt_term::bg_window_size_sensitive ()
84	{	45	{
		46	# if BG_IMAGE_FROM_ROOT
		47	if (option (Opt_transparent))
		48	return true;
		49	# endif
85		50
86	if (target_x != x	51	# if BG_IMAGE_FROM_FILE
87	|| target_y != y)	52	if (fimage.img)
88	{	53	{
89	target_x = x;	54	if ((fimage.flags & IM_IS_SIZE_SENSITIVE)
90	target_y = y;	55	|| fimage.img->w > szHint.width
		56	|| fimage.img->h > szHint.height)
91	return true;	57	return true;
92	}	58	}
		59	# endif
		60
93	return false;	61	return false;
94	}	62	}
95		63
96	bool	64	bool
97	rxvt_term::bg_window_size_sensitive ()	65	rxvt_term::bg_window_position_sensitive ()
98	{	66	{
99	# ifdef ENABLE_TRANSPARENCY	67	# if BG_IMAGE_FROM_ROOT
100	if (bg_flags & BG_IS_TRANSPARENT)	68	if (option (Opt_transparent))
101	return true;	69	return true;
102	# endif	70	# endif
103		71
104	# ifdef BG_IMAGE_FROM_FILE	72	# if BG_IMAGE_FROM_FILE
105	if (bg_flags & BG_IS_FROM_FILE)	73	if (fimage.img)
106	{	74	{
107	if (bg_flags & BG_IS_SIZE_SENSITIVE)	75	if (fimage.flags & IM_ROOT_ALIGN)
108	return true;	76	return true;
109	}	77	}
110	# endif	78	# endif
111		79
112	return false;	80	return false;
113	}	81	}
114		82
115	bool
116	rxvt_term::bg_window_position_sensitive ()
117	{
118	# ifdef ENABLE_TRANSPARENCY
119	if (bg_flags & BG_IS_TRANSPARENT)
120	return true;
121	# endif
122
123	# ifdef BG_IMAGE_FROM_FILE	83	# if BG_IMAGE_FROM_FILE
124	if (bg_flags & BG_IS_FROM_FILE)
125	{
126	if (bg_flags & BG_ROOT_ALIGN)
127	return true;
128	}
129	# endif
130
131	return false;
132	}
133
134	# ifdef BG_IMAGE_FROM_FILE
135	static inline bool
136	check_set_scale_value (int geom_flags, int flag, unsigned int &scale, unsigned int new_value)
137	{
138	if (geom_flags & flag)
139	{
140	if (new_value > 1000)
141	new_value = 1000;
142	if (new_value != scale)
143	{
144	scale = new_value;
145	return true;
146	}
147	}
148	return false;
149	}
150
151	static inline bool
152	check_set_align_value (int geom_flags, int flag, int &align, int new_value)
153	{
154	if (geom_flags & flag)
155	{
156	if (new_value < -100)
157	new_value = -100;
158	else if (new_value > 200)
159	new_value = 200;
160	if (new_value != align)
161	{
162	align = new_value;
163	return true;
164	}
165	}
166	return false;
167	}
168
169	static inline int	84	static inline int
170	make_align_position (int align, int window_size, int image_size)	85	make_align_position (int align, int window_size, int image_size)
171	{	86	{
172	int diff = window_size - image_size;
173	int smaller = min (image_size, window_size);
174
175	if (align >= 0 && align <= 100)	87	if (align >= 0 && align <= 100)
176	return diff * align / 100;	88	return lerp (0, window_size - image_size, align);
177	else if (align > 100 && align <= 200)	89	else if (align > 100)
178	return ((align - 100) * smaller / 100) + window_size - smaller;	90	return lerp (window_size - image_size, window_size, align - 100);
179	else if (align >= -100 && align < 0)	91	else
180	return ((align + 100) * smaller / 100) - image_size;	92	return lerp (-image_size, 0, align + 100);
181	return 0;
182	}	93	}
183		94
184	static inline int	95	static void
185	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)
186	{	97	{
187	int src_pos = 0;	98	if (!strcasecmp (style, "tiled"))
188	dst_pos = pos;
189	dst_size = size;
190	if (pos < 0)
191	{
192	src_pos = -pos;
193	dst_pos = 0;
194	dst_size += pos;
195	}	99	{
196		100	flags = IM_TILE;
197	if (dst_pos + dst_size > target_size)	101	w = h = noScale;
198	dst_size = target_size - dst_pos;	102	x = y = 0;
199	return src_pos;	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	}
200	}	128	}
201		129
202	bool	130	bool
203	rxvt_term::bg_set_geometry (const char *geom, bool update)	131	rxvt_image::set_geometry (const char *geom, bool update)
204	{	132	{
205	bool changed = false;	133	bool changed = false;
206	int geom_flags = 0;	134	int geom_flags = 0;
207	int x = 0, y = 0;	135	int x = h_align;
		136	int y = v_align;
208	unsigned int w = 0, h = 0;	137	unsigned int w = h_scale;
209	unsigned int n;	138	unsigned int h = v_scale;
210	unsigned long new_flags = (bg_flags & (~BG_GEOMETRY_FLAGS));	139	uint8_t new_flags = 0;
211	const char *ops;
212		140
213	if (geom == NULL)	141	if (geom == NULL)
214	return false;	142	return false;
215		143
216	char str[256];	144	if (geom[0])
217
218	ops = strchr (geom, ':');
219	if (ops == NULL)
220	n = strlen (geom);
221	else
222	n = ops - geom;
223
224	if (n >= sizeof (str))
225	return false;
226
227	memcpy (str, geom, n);
228	str[n] = '\0';
229	rxvt_strtrim (str);
230
231	if (str[0])
232	{	145	{
233	/* we have geometry string - let's handle it prior to applying ops */	146	char **arr = rxvt_strsplit (':', geom);
		147
		148	for (int i = 0; arr[i]; i++)
		149	{
		150	if (!strncasecmp (arr[i], "style=", 6))
		151	{
		152	parse_style (arr[i] + 6, x, y, w, h, new_flags);
		153	geom_flags = WidthValue|HeightValue|XValue|YValue;
		154	}
		155	else if (!strcasecmp (arr[i], "op=tile"))
		156	new_flags |= IM_TILE;
		157	else if (!strcasecmp (arr[i], "op=keep-aspect"))
		158	new_flags |= IM_KEEP_ASPECT;
		159	else if (!strcasecmp (arr[i], "op=root-align"))
		160	new_flags |= IM_ROOT_ALIGN;
		161
		162	// deprecated
		163	else if (!strcasecmp (arr[i], "tile"))
		164	{
		165	new_flags |= IM_TILE;
		166	w = h = noScale;
		167	geom_flags |= WidthValue|HeightValue;
		168	}
		169	else if (!strcasecmp (arr[i], "propscale"))
		170	{
		171	new_flags |= IM_KEEP_ASPECT;
		172	w = h = windowScale;
		173	geom_flags |= WidthValue|HeightValue;
		174	}
		175	else if (!strcasecmp (arr[i], "hscale"))
		176	{
		177	new_flags |= IM_TILE;
		178	w = windowScale;
		179	h = noScale;
		180	geom_flags |= WidthValue|HeightValue;
		181	}
		182	else if (!strcasecmp (arr[i], "vscale"))
		183	{
		184	new_flags |= IM_TILE;
		185	h = windowScale;
		186	w = noScale;
		187	geom_flags |= WidthValue|HeightValue;
		188	}
		189	else if (!strcasecmp (arr[i], "scale"))
		190	{
		191	w = h = windowScale;
		192	geom_flags |= WidthValue|HeightValue;
		193	}
		194	else if (!strcasecmp (arr[i], "auto"))
		195	{
		196	w = h = windowScale;
		197	x = y = centerAlign;
		198	geom_flags |= WidthValue|HeightValue|XValue|YValue;
		199	}
		200	else if (!strcasecmp (arr[i], "root"))
		201	{
		202	new_flags |= IM_TILE|IM_ROOT_ALIGN;
		203	w = h = noScale;
		204	geom_flags |= WidthValue|HeightValue;
		205	}
		206
		207	else
234	geom_flags = XParseGeometry (str, &x, &y, &w, &h);	208	geom_flags |= XParseGeometry (arr[i], &x, &y, &w, &h);
235	} /* done parsing geometry string */	209	} /* done parsing ops */
		210
		211	rxvt_free_strsplit (arr);
		212	}
		213
		214	new_flags |= flags & ~IM_GEOMETRY_FLAGS;
236		215
237	if (!update)	216	if (!update)
238	{	217	{
239	if (!(geom_flags & XValue))	218	if (!(geom_flags & XValue))
240	x = y = defaultAlign;	219	x = y = defaultAlign;
…		…
245	w = h = defaultScale;	224	w = h = defaultScale;
246	else if (!(geom_flags & HeightValue))	225	else if (!(geom_flags & HeightValue))
247	h = w;	226	h = w;
248	else if (!(geom_flags & WidthValue))	227	else if (!(geom_flags & WidthValue))
249	w = h;	228	w = h;
250
251	geom_flags |= WidthValue|HeightValue|XValue|YValue;
252	}
253
254	if (ops)
255	{	229	}
256	char **arr = rxvt_strsplit (':', ops + 1);
257		230
258	for (int i = 0; arr[i]; i++)	231	clamp_it (x, -100, 200);
259	{	232	clamp_it (y, -100, 200);
260	if (!strcasecmp (arr[i], "tile"))
261	{
262	new_flags |= BG_TILE;
263	w = h = noScale;
264	geom_flags |= WidthValue|HeightValue;
265	}
266	else if (!strcasecmp (arr[i], "propscale"))
267	{
268	new_flags |= BG_PROP_SCALE;
269	}
270	else if (!strcasecmp (arr[i], "scale"))
271	{
272	if (h == 0) h = windowScale;
273	if (w == 0) w = windowScale;
274		233
275	geom_flags |= WidthValue|HeightValue;	234	if (flags != new_flags
276	}	235	|| h_scale != w
277	else if (!strcasecmp (arr[i], "root"))	236	|| v_scale != h
278	{	237	|| h_align != x
279	new_flags |= BG_TILE|BG_ROOT_ALIGN;	238	|| v_align != y)
280	w = h = noScale;
281	geom_flags |= WidthValue|HeightValue;
282	}
283	} /* done parsing ops */
284
285	rxvt_free_strsplit (arr);
286	}	239	{
287
288	if (check_set_scale_value (geom_flags, WidthValue, h_scale, w)) changed = true;
289	if (check_set_scale_value (geom_flags, HeightValue, v_scale, h)) changed = true;
290	if (check_set_align_value (geom_flags, XValue, h_align, x)) changed = true;
291	if (check_set_align_value (geom_flags, YValue, v_align, y)) changed = true;
292
293	if (new_flags != bg_flags)
294	{
295	bg_flags = new_flags;	240	flags = new_flags;
		241	h_scale = w;
		242	v_scale = h;
		243	h_align = x;
		244	v_align = y;
296	changed = true;	245	changed = true;
297	}	246	}
298		247
		248	if (is_size_sensitive ())
		249	flags |= IM_IS_SIZE_SENSITIVE;
		250	else
		251	flags &= ~IM_IS_SIZE_SENSITIVE;
		252
299	return changed;	253	return changed;
300	}	254	}
301		255
302	void	256	void
303	rxvt_term::get_image_geometry (int image_width, int image_height, int &w, int &h, int &x, int &y)	257	rxvt_term::get_image_geometry (rxvt_image &image, int &w, int &h, int &x, int &y)
304	{	258	{
		259	int image_width = image.img->w;
		260	int image_height = image.img->h;
305	int target_width = szHint.width;	261	int parent_width = szHint.width;
306	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);
307		265
308	if (bg_flags & BG_PROP_SCALE)	266	w = h_scale * parent_width / 100;
		267	h = v_scale * parent_height / 100;
		268
		269	if (image.flags & IM_KEEP_ASPECT)
309	{	270	{
310	float scale = (float)target_width / image_width;	271	float scale = (float)w / image_width;
311	min_it (scale, (float)target_height / image_height);	272	min_it (scale, (float)h / image_height);
312	w = image_width * scale + 0.5;	273	w = image_width * scale + 0.5;
313	h = image_height * scale + 0.5;	274	h = image_height * scale + 0.5;
314	}	275	}
315	else
316	{
317	w = h_scale * target_width / 100;
318	h = v_scale * target_height / 100;
319	}
320		276
321	if (!w) w = image_width;	277	if (!w) w = image_width;
322	if (!h) h = image_height;	278	if (!h) h = image_height;
323		279
324	if (bg_flags & BG_ROOT_ALIGN)	280	if (image.flags & IM_ROOT_ALIGN)
325	{	281	{
326	x = -target_x;	282	x = -parent_x;
327	y = -target_y;	283	y = -parent_y;
328	}	284	}
329	else	285	else
330	{	286	{
331	x = make_align_position (h_align, target_width, w);	287	x = make_align_position (image.h_align, parent_width, w);
332	y = make_align_position (v_align, target_height, h);	288	y = make_align_position (image.v_align, parent_height, h);
333	}
334
335	bg_flags &= ~BG_IS_SIZE_SENSITIVE;
336	if (!(bg_flags & BG_TILE)
337	|| (bg_flags & BG_PROP_SCALE) || h_scale || v_scale
338	|| (!(bg_flags & BG_ROOT_ALIGN) && (h_align || v_align))
339	|| w > target_width || h > target_height)
340	bg_flags |= BG_IS_SIZE_SENSITIVE;
341	}
342
343	# ifdef HAVE_AFTERIMAGE
344	bool
345	rxvt_term::render_image (unsigned long tr_flags)
346	{
347	init_asv ();
348
349	ASImage *background = NULL;
350	ARGB32 background_tint = TINT_LEAVE_SAME;
351
352	# ifdef ENABLE_TRANSPARENCY
353	if (tr_flags)
354	background = pixmap2ximage (asv, bg_pixmap, 0, 0, bg_pmap_width, bg_pmap_height, AllPlanes, 100);
355
356	if (tr_flags & BG_NEEDS_TINT)
357	{	289	}
358	ShadingInfo as_shade;	290	}
359	as_shade.shading = shade;
360		291
361	rgba c (rgba::MAX_CC,rgba::MAX_CC,rgba::MAX_CC);	292	bool
362	if (bg_flags & BG_TINT_SET)	293	rxvt_term::render_image (rxvt_image &image)
363	tint.get (c);	294	{
364	as_shade.tintColor.red = c.r;
365	as_shade.tintColor.green = c.g;
366	as_shade.tintColor.blue = c.b;
367
368	background_tint = shading2tint32 (&as_shade);
369	}
370
371	if ((tr_flags & BG_NEEDS_BLUR) && background != NULL)
372	{
373	ASImage *tmp = blur_asimage_gauss (asv, background, h_blurRadius, v_blurRadius, 0xFFFFFFFF,
374	(original_asim == NULL || tint == TINT_LEAVE_SAME) ? ASA_XImage : ASA_ASImage,
375	100, ASIMAGE_QUALITY_DEFAULT);
376	if (tmp)
377	{
378	destroy_asimage (&background);
379	background = tmp;
380	}
381	}
382	# endif
383
384	ASImage *result = 0;
385
386	int target_width = szHint.width;	295	int parent_width = szHint.width;
387	int target_height = szHint.height;	296	int parent_height = szHint.height;
388	int new_pmap_width = target_width;
389	int new_pmap_height = target_height;
390		297
391	int x = 0;	298	int x = 0;
392	int y = 0;	299	int y = 0;
393	int w = 0;	300	int w = 0;
394	int h = 0;	301	int h = 0;
395		302
396	if (original_asim)	303	get_image_geometry (image, w, h, x, y);
397	get_image_geometry (original_asim->width, original_asim->height, w, h, x, y);
398		304
399	if (!original_asim	305	if (!(image.flags & IM_ROOT_ALIGN)
400	|| (!(bg_flags & BG_ROOT_ALIGN)
401	&& (x >= target_width	306	&& (x >= parent_width
402	|| y >= target_height	307	|| y >= parent_height
403	|| (x + w <= 0)	308	|| x + w <= 0
404	|| (y + h <= 0))))	309	|| y + h <= 0))
405	{	310	return false;
406	if (background)
407	{
408	new_pmap_width = background->width;
409	new_pmap_height = background->height;
410	result = background;
411		311
412	if (background_tint != TINT_LEAVE_SAME)	312	rxvt_img *img = image.img->scale (w, h);
413	{	313
414	ASImage *tmp = tile_asimage (asv, background, 0, 0,	314	if (image.flags & IM_TILE)
415	target_width, target_height, background_tint,	315	img->repeat_mode (RepeatNormal);
416	ASA_XImage, 100, ASIMAGE_QUALITY_DEFAULT);
417	if (tmp)
418	result = tmp;
419	}
420	}
421	else
422	new_pmap_width = new_pmap_height = 0;
423	}
424	else	316	else
425	{	317	img->repeat_mode (RepeatNone);
426	result = original_asim;	318	img->sub_rect (-x, -y, parent_width, parent_height)->replace (img);
427		319
428	if ((w != original_asim->width)	320	if (bg_flags & BG_IS_VALID)
429	|| (h != original_asim->height))	321	img->draw (bg_img, PictOpOver, image.alpha * 1. / 0xffff);
430	{
431	result = scale_asimage (asv, original_asim,
432	w, h,
433	background ? ASA_ASImage : ASA_XImage,
434	100, ASIMAGE_QUALITY_DEFAULT);
435	}
436		322
437	if (background == NULL)	323	XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
438	{	324	img->convert_format (format, pix_colors [Color_bg])->replace (img);
439	if (bg_flags & BG_TILE)
440	{
441	/* if tiling - pixmap has to be sized exactly as the image,
442	but there is no need to make it bigger than the window! */
443	new_pmap_width = min (result->width, target_width);
444	new_pmap_height = min (result->height, target_height);
445		325
446	/* we also need to tile our image in both directions */	326	delete bg_img;
447	ASImage *tmp = tile_asimage (asv, result,	327	bg_img = img;
448	(int)result->width - x,
449	(int)result->height - y,
450	new_pmap_width,
451	new_pmap_height,
452	TINT_LEAVE_SAME, ASA_XImage,
453	100, ASIMAGE_QUALITY_DEFAULT);
454	if (tmp)
455	{
456	if (result != original_asim)
457	destroy_asimage (&result);
458		328
459	result = tmp;
460	}
461	}
462	}
463	else
464	{
465	/* if blending background and image - pixmap has to be sized same as target window */
466	ASImageLayer *layers = create_image_layers (2);
467
468	layers[0].im = background;
469	layers[0].clip_width = target_width;
470	layers[0].clip_height = target_height;
471	layers[0].tint = background_tint;
472	layers[1].im = result;
473
474	if (bg_flags & BG_TILE)
475	{
476	/* tile horizontally */
477	while (x > 0) x -= (int)result->width;
478	layers[1].dst_x = x;
479	layers[1].clip_width = result->width+target_width;
480	}
481	else
482	{
483	/* clip horizontally */
484	layers[1].dst_x = x;
485	layers[1].clip_width = result->width;
486	}
487
488	if (bg_flags & BG_TILE)
489	{
490	while (y > 0) y -= (int)result->height;
491	layers[1].dst_y = y;
492	layers[1].clip_height = result->height + target_height;
493	}
494	else
495	{
496	layers[1].dst_y = y;
497	layers[1].clip_height = result->height;
498	}
499
500	if (rs[Rs_blendtype])
501	{
502	layers[1].merge_scanlines = blend_scanlines_name2func (rs[Rs_blendtype]);
503	if (layers[1].merge_scanlines == NULL)
504	layers[1].merge_scanlines = alphablend_scanlines;
505	}
506
507	ASImage *tmp = merge_layers (asv, layers, 2, target_width, target_height,
508	ASA_XImage, 0, ASIMAGE_QUALITY_DEFAULT);
509
510	if (tmp)
511	{
512	if (result != original_asim)
513	destroy_asimage (&result);
514
515	result = tmp;
516	}
517
518	free (layers);
519	}
520	}
521
522	bool ret = false;
523
524	if (result)
525	{
526	XGCValues gcv;
527	GC gc;
528
529	/* create Pixmap */
530	if (bg_pixmap == None
531	|| bg_pmap_width != new_pmap_width
532	|| bg_pmap_height != new_pmap_height)
533	{
534	if (bg_pixmap)
535	XFreePixmap (dpy, bg_pixmap);
536	bg_pixmap = XCreatePixmap (dpy, vt, new_pmap_width, new_pmap_height, depth);
537	bg_pmap_width = new_pmap_width;
538	bg_pmap_height = new_pmap_height;
539	}
540	/* fill with background color (if result's not completely overlapping it) */
541	gcv.foreground = pix_colors[Color_bg];
542	gc = XCreateGC (dpy, vt, GCForeground, &gcv);
543
544	int src_x = 0, src_y = 0, dst_x = 0, dst_y = 0;
545	int dst_width = result->width, dst_height = result->height;
546	if (background == NULL)
547	{
548	if (!(bg_flags & BG_TILE))
549	{
550	src_x = make_clip_rectangle (x, result->width , new_pmap_width , dst_x, dst_width );
551	src_y = make_clip_rectangle (y, result->height, new_pmap_height, dst_y, dst_height);
552	}
553
554	if (dst_x > 0 || dst_y > 0
555	|| dst_x + dst_width < new_pmap_width
556	|| dst_y + dst_height < new_pmap_height)
557	XFillRectangle (dpy, bg_pixmap, gc, 0, 0, new_pmap_width, new_pmap_height);
558	}
559
560	/* put result on pixmap */
561	if (dst_x < new_pmap_width && dst_y < new_pmap_height)
562	asimage2drawable (asv, bg_pixmap, result, gc, src_x, src_y, dst_x, dst_y, dst_width, dst_height, True);
563
564	if (result != background && result != original_asim)
565	destroy_asimage (&result);
566
567	XFreeGC (dpy, gc);
568
569	ret = true;
570	}
571
572	if (background)
573	destroy_asimage (&background);
574
575	return ret;
576	}
577	# endif /* HAVE_AFTERIMAGE */
578
579	# ifdef HAVE_PIXBUF
580	bool
581	rxvt_term::pixbuf_to_pixmap (GdkPixbuf *pixbuf, Pixmap pixmap, GC gc,
582	int src_x, int src_y, int dst_x, int dst_y,
583	unsigned int width, unsigned int height)
584	{
585	XImage *ximage;
586	char *data, *line;
587	int bytes_per_pixel;
588	int width_r, width_g, width_b;
589	int sh_r, sh_g, sh_b;
590	int rowstride;
591	int channels;
592	unsigned char *row;
593
594	if (visual->c_class != TrueColor)
595	return false;
596
597	if (depth == 24 || depth == 32)
598	bytes_per_pixel = 4;
599	else if (depth == 15 || depth == 16)
600	bytes_per_pixel = 2;
601	else
602	return false;
603
604	width_r = ecb_popcount32 (visual->red_mask);
605	width_g = ecb_popcount32 (visual->green_mask);
606	width_b = ecb_popcount32 (visual->blue_mask);
607
608	if (width_r > 8 || width_g > 8 || width_b > 8)
609	return false;
610
611	sh_r = ecb_ctz32 (visual->red_mask);
612	sh_g = ecb_ctz32 (visual->green_mask);
613	sh_b = ecb_ctz32 (visual->blue_mask);
614
615	if (width > INT_MAX / height / bytes_per_pixel)
616	return false;
617
618	data = (char *)malloc (width * height * bytes_per_pixel);
619	if (!data)
620	return false;
621
622	ximage = XCreateImage (dpy, visual, depth, ZPixmap, 0, data,
623	width, height, bytes_per_pixel * 8, 0);
624	if (!ximage)
625	{
626	free (data);
627	return false;
628	}
629
630	ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
631
632	rowstride = gdk_pixbuf_get_rowstride (pixbuf);
633	channels = gdk_pixbuf_get_n_channels (pixbuf);
634	row = gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * channels;
635	line = data;
636
637	for (int y = 0; y < height; y++)
638	{
639	for (int x = 0; x < width; x++)
640	{
641	unsigned char *pixel = row + x * channels;
642	uint32_t value;
643
644	value = ((pixel[0] >> (8 - width_r)) << sh_r)
645	| ((pixel[1] >> (8 - width_g)) << sh_g)
646	| ((pixel[2] >> (8 - width_b)) << sh_b);
647
648	if (bytes_per_pixel == 4)
649	((uint32_t *)line)[x] = value;
650	else
651	((uint16_t *)line)[x] = value;
652	}
653
654	row += rowstride;
655	line += ximage->bytes_per_line;
656	}
657
658	XPutImage (dpy, pixmap, gc, ximage, 0, 0, dst_x, dst_y, width, height);
659	XDestroyImage (ximage);
660	return true;	329	return true;
661	}	330	}
662		331
663	bool	332	rxvt_image::rxvt_image ()
664	rxvt_term::render_image (unsigned long tr_flags)
665	{	333	{
666	if (!pixbuf)	334	alpha = 0xffff;
667	return false;	335	flags = 0;
		336	h_scale =
		337	v_scale = defaultScale;
		338	h_align =
		339	v_align = defaultAlign;
668		340
669	if (tr_flags	341	img = 0;
670	&& !(bg_flags & BG_HAS_RENDER))
671	return false;
672
673	GdkPixbuf *result;
674
675	int image_width = gdk_pixbuf_get_width (pixbuf);
676	int image_height = gdk_pixbuf_get_height (pixbuf);
677
678	int target_width = szHint.width;
679	int target_height = szHint.height;
680	int new_pmap_width = target_width;
681	int new_pmap_height = target_height;
682
683	int x = 0;
684	int y = 0;
685	int w = 0;
686	int h = 0;
687
688	get_image_geometry (image_width, image_height, w, h, x, y);
689
690	if (!(bg_flags & BG_ROOT_ALIGN)
691	&& (x >= target_width
692	|| y >= target_height
693	|| (x + w <= 0)
694	|| (y + h <= 0)))
695	return false;
696
697	result = pixbuf;
698
699	if ((w != image_width)
700	|| (h != image_height))
701	{
702	result = gdk_pixbuf_scale_simple (pixbuf,
703	w, h,
704	GDK_INTERP_BILINEAR);
705	}
706
707	if (!result)
708	return false;
709
710	bool ret = false;
711
712	XGCValues gcv;
713	GC gc;
714	Pixmap root_pmap;
715
716	image_width = gdk_pixbuf_get_width (result);
717	image_height = gdk_pixbuf_get_height (result);
718
719	if (tr_flags)
720	{
721	root_pmap = bg_pixmap;
722	bg_pixmap = None;
723	}
724	else
725	{
726	if (bg_flags & BG_TILE)
727	{
728	new_pmap_width = min (image_width, target_width);
729	new_pmap_height = min (image_height, target_height);
730	}
731	}
732
733	if (bg_pixmap == None
734	|| bg_pmap_width != new_pmap_width
735	|| bg_pmap_height != new_pmap_height)
736	{
737	if (bg_pixmap)
738	XFreePixmap (dpy, bg_pixmap);
739	bg_pixmap = XCreatePixmap (dpy, vt, new_pmap_width, new_pmap_height, depth);
740	bg_pmap_width = new_pmap_width;
741	bg_pmap_height = new_pmap_height;
742	}
743
744	gcv.foreground = pix_colors[Color_bg];
745	gc = XCreateGC (dpy, vt, GCForeground, &gcv);
746
747	if (gc)
748	{
749	if (bg_flags & BG_TILE)
750	{
751	Pixmap tile = XCreatePixmap (dpy, vt, image_width, image_height, depth);
752	pixbuf_to_pixmap (result, tile, gc,
753	0, 0,
754	0, 0,
755	image_width, image_height);
756
757	gcv.tile = tile;
758	gcv.fill_style = FillTiled;
759	gcv.ts_x_origin = x;
760	gcv.ts_y_origin = y;
761	XChangeGC (dpy, gc, GCFillStyle | GCTile | GCTileStipXOrigin | GCTileStipYOrigin, &gcv);
762
763	XFillRectangle (dpy, bg_pixmap, gc, 0, 0, new_pmap_width, new_pmap_height);
764	XFreePixmap (dpy, tile);
765	}
766	else
767	{
768	int src_x, src_y, dst_x, dst_y;
769	int dst_width, dst_height;
770
771	src_x = make_clip_rectangle (x, image_width , new_pmap_width , dst_x, dst_width );
772	src_y = make_clip_rectangle (y, image_height, new_pmap_height, dst_y, dst_height);
773
774	if (dst_x > 0 || dst_y > 0
775	|| dst_x + dst_width < new_pmap_width
776	|| dst_y + dst_height < new_pmap_height)
777	XFillRectangle (dpy, bg_pixmap, gc, 0, 0, new_pmap_width, new_pmap_height);
778
779	if (dst_x < new_pmap_width && dst_y < new_pmap_height)
780	pixbuf_to_pixmap (result, bg_pixmap, gc,
781	src_x, src_y,
782	dst_x, dst_y,
783	dst_width, dst_height);
784	}
785
786	#if XRENDER
787	if (tr_flags)
788	{
789	XRenderPictureAttributes pa;
790
791	XRenderPictFormat *src_format = XRenderFindVisualFormat (dpy, visual);
792	Picture src = XRenderCreatePicture (dpy, root_pmap, src_format, 0, &pa);
793
794	XRenderPictFormat *dst_format = XRenderFindVisualFormat (dpy, visual);
795	Picture dst = XRenderCreatePicture (dpy, bg_pixmap, dst_format, 0, &pa);
796
797	pa.repeat = True;
798	Pixmap mask_pmap = XCreatePixmap (dpy, vt, 1, 1, 8);
799	XRenderPictFormat *mask_format = XRenderFindStandardFormat (dpy, PictStandardA8);
800	Picture mask = XRenderCreatePicture (dpy, mask_pmap, mask_format, CPRepeat, &pa);
801	XFreePixmap (dpy, mask_pmap);
802
803	XRenderColor mask_c;
804
805	mask_c.alpha = 0x8000;
806	mask_c.red = 0;
807	mask_c.green = 0;
808	mask_c.blue = 0;
809	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
810	XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, target_width, target_height);
811
812	XRenderFreePicture (dpy, src);
813	XRenderFreePicture (dpy, dst);
814	XRenderFreePicture (dpy, mask);
815	}
816	#endif
817
818	XFreeGC (dpy, gc);
819
820	ret = true;
821	}
822
823	if (result != pixbuf)
824	g_object_unref (result);
825
826	if (tr_flags)
827	XFreePixmap (dpy, root_pmap);
828
829	return ret;
830	}	342	}
831	# endif /* HAVE_PIXBUF */
832		343
833	bool	344	void
834	rxvt_term::bg_set_file (const char *file)	345	rxvt_image::set_file_geometry (rxvt_screen *s, const char *file)
835	{	346	{
836	if (!file || !*file)	347	if (!file || !*file)
837	return false;	348	return;
838		349
839	if (const char *p = strchr (file, ';'))	350	const char *p = strchr (file, ';');
		351
		352	if (p)
840	{	353	{
841	size_t len = p - file;	354	size_t len = p - file;
842	char *f = rxvt_temp_buf<char> (len + 1);	355	char *f = rxvt_temp_buf<char> (len + 1);
843	memcpy (f, file, len);	356	memcpy (f, file, len);
844	f[len] = '\0';	357	f[len] = '\0';
845	file = f;	358	file = f;
846	}	359	}
847		360
848	# ifdef HAVE_AFTERIMAGE	361	set_file (s, file);
849	if (!asimman)	362	alpha = 0x8000;
850	asimman = create_generic_imageman (rs[Rs_path]);	363	set_geometry (p ? p + 1 : "");
851	ASImage *image = get_asimage (asimman, file, 0xFFFFFFFF, 100);	364	}
852	if (image)
853	{
854	if (original_asim)
855	safe_asimage_destroy (original_asim);
856	original_asim = image;
857	bg_flags |= BG_IS_FROM_FILE | BG_CLIENT_RENDER;
858	return true;
859	}
860	# endif
861		365
862	# ifdef HAVE_PIXBUF	366	void
863	GdkPixbuf *image = gdk_pixbuf_new_from_file (file, NULL);	367	rxvt_image::set_file (rxvt_screen *s, const char *file)
864	if (image)	368	{
865	{	369	rxvt_img *img2 = rxvt_img::new_from_file (s, file);
866	if (pixbuf)	370	delete img;
867	g_object_unref (pixbuf);	371	img = img2;
868	pixbuf = image;
869	bg_flags |= BG_IS_FROM_FILE;
870	return true;
871	}
872	# endif
873
874	return false;
875	}	372	}
876		373
877	# endif /* BG_IMAGE_FROM_FILE */	374	# endif /* BG_IMAGE_FROM_FILE */
878		375
879	# ifdef ENABLE_TRANSPARENCY
880	bool	376	bool
881	rxvt_term::bg_set_transparent ()	377	image_effects::set_blur (const char *geom)
882	{
883	if (!(bg_flags & BG_IS_TRANSPARENT))
884	{
885	bg_flags |= BG_IS_TRANSPARENT;
886	return true;
887	}
888
889	return false;
890	}
891
892	bool
893	rxvt_term::bg_set_blur (const char *geom)
894	{	378	{
895	bool changed = false;	379	bool changed = false;
896	unsigned int hr, vr;	380	unsigned int hr, vr;
897	int junk;	381	int junk;
898	int geom_flags = XParseGeometry (geom, &junk, &junk, &hr, &vr);	382	int geom_flags = XParseGeometry (geom, &junk, &junk, &hr, &vr);
…		…
915	{	399	{
916	changed = true;	400	changed = true;
917	v_blurRadius = vr;	401	v_blurRadius = vr;
918	}	402	}
919		403
920	if (v_blurRadius == 0 && h_blurRadius == 0)
921	bg_flags &= ~BG_NEEDS_BLUR;
922	else
923	bg_flags |= BG_NEEDS_BLUR;
924
925	return changed;	404	return changed;
926	}	405	}
927		406
928	void
929	rxvt_term::set_tint_shade_flags ()
930	{
931	rgba c (rgba::MAX_CC,rgba::MAX_CC,rgba::MAX_CC);
932	bool has_shade = shade != 100;
933
934	bg_flags &= ~BG_TINT_FLAGS;
935
936	if (bg_flags & BG_TINT_SET)
937	{
938	tint.get (c);
939	if (!has_shade
940	&& (c.r <= 0x00ff || c.r >= 0xff00)
941	&& (c.g <= 0x00ff || c.g >= 0xff00)
942	&& (c.b <= 0x00ff || c.b >= 0xff00))
943	bg_flags |= BG_TINT_BITAND;
944	}
945
946	if (has_shade || (bg_flags & BG_TINT_SET))
947	bg_flags |= BG_NEEDS_TINT;
948	}
949
950	bool	407	bool
951	rxvt_term::bg_set_tint (rxvt_color &new_tint)	408	image_effects::set_tint (const rxvt_color &new_tint)
952	{	409	{
953	if (!(bg_flags & BG_TINT_SET) || tint != new_tint)	410	if (!tint_set || tint != new_tint)
954	{	411	{
955	tint = new_tint;	412	tint = new_tint;
956	bg_flags |= BG_TINT_SET;	413	tint_set = true;
957	set_tint_shade_flags ();	414
958	return true;	415	return true;
959	}	416	}
960		417
961	return false;	418	return false;
962	}	419	}
963		420
964	bool	421	bool
965	rxvt_term::bg_set_shade (const char *shade_str)	422	image_effects::set_shade (const char *shade_str)
966	{	423	{
967	int new_shade = (shade_str) ? atoi (shade_str) : 100;	424	int new_shade = atoi (shade_str);
968		425
969	clamp_it (new_shade, -100, 200);	426	clamp_it (new_shade, -100, 200);
970	if (new_shade < 0)	427	if (new_shade < 0)
971	new_shade = 200 - (100 + new_shade);	428	new_shade = 200 - (100 + new_shade);
972		429
973	if (new_shade != shade)	430	if (new_shade != shade)
974	{	431	{
975	shade = new_shade;	432	shade = new_shade;
976	set_tint_shade_flags ();
977	return true;	433	return true;
978	}	434	}
979		435
980	return false;	436	return false;
981	}	437	}
982		438
983	#if XRENDER	439	# if BG_IMAGE_FROM_ROOT
984	static void
985	get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params)
986	{
987	double sigma = radius / 2.0;
988	double scale = sqrt (2.0 * M_PI) * sigma;
989	double sum = 0.0;
990
991	for (int i = 0; i < width; i++)
992	{
993	double x = i - width / 2;
994	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
995	sum += kernel[i];
996	}
997
998	params[0] = XDoubleToFixed (width);
999	params[1] = XDoubleToFixed (1);
1000
1001	for (int i = 0; i < width; i++)
1002	params[i+2] = XDoubleToFixed (kernel[i] / sum);
1003	}
1004	#endif
1005
1006	bool
1007	rxvt_term::blur_pixmap (Pixmap pixmap, Visual *visual, int width, int height)
1008	{
1009	bool ret = false;
1010	#if XRENDER
1011	int size = max (h_blurRadius, v_blurRadius) * 2 + 1;
1012	double *kernel = (double *)malloc (size * sizeof (double));
1013	XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
1014
1015	XRenderPictureAttributes pa;
1016	XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
1017
1018	Picture src = XRenderCreatePicture (dpy, pixmap, format, 0, &pa);
1019	Picture dst = XRenderCreatePicture (dpy, pixmap, format, 0, &pa);
1020
1021	if (kernel && params)
1022	{
1023	if (h_blurRadius)
1024	{
1025	size = h_blurRadius * 2 + 1;
1026	get_gaussian_kernel (h_blurRadius, size, kernel, params);
1027
1028	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
1029	XRenderComposite (dpy,
1030	PictOpSrc,
1031	src,
1032	None,
1033	dst,
1034	0, 0,
1035	0, 0,
1036	0, 0,
1037	width, height);
1038	}
1039
1040	if (v_blurRadius)
1041	{
1042	size = v_blurRadius * 2 + 1;
1043	get_gaussian_kernel (v_blurRadius, size, kernel, params);
1044	::swap (params[0], params[1]);
1045
1046	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
1047	XRenderComposite (dpy,
1048	PictOpSrc,
1049	src,
1050	None,
1051	dst,
1052	0, 0,
1053	0, 0,
1054	0, 0,
1055	width, height);
1056	}
1057
1058	ret = true;
1059	}
1060
1061	free (kernel);
1062	free (params);
1063	XRenderFreePicture (dpy, src);
1064	XRenderFreePicture (dpy, dst);
1065	#endif
1066	return ret;
1067	}
1068
1069	bool
1070	rxvt_term::tint_pixmap (Pixmap pixmap, Visual *visual, int width, int height)
1071	{
1072	bool ret = false;
1073
1074	if (bg_flags & BG_TINT_BITAND)
1075	{
1076	XGCValues gcv;
1077	GC gc;
1078
1079	/* In this case we can tint image server-side getting significant
1080	* performance improvements, as we eliminate XImage transfer
1081	*/
1082	gcv.foreground = Pixel (tint);
1083	gcv.function = GXand;
1084	gcv.fill_style = FillSolid;
1085	gc = XCreateGC (dpy, pixmap, GCFillStyle | GCForeground | GCFunction, &gcv);
1086	if (gc)
1087	{
1088	XFillRectangle (dpy, pixmap, gc, 0, 0, width, height);
1089	ret = true;
1090	XFreeGC (dpy, gc);
1091	}
1092	}
1093	else
1094	{
1095	# if XRENDER
1096	rgba c (rgba::MAX_CC, rgba::MAX_CC, rgba::MAX_CC);
1097
1098	if (bg_flags & BG_TINT_SET)
1099	tint.get (c);
1100
1101	if (shade <= 100)
1102	{
1103	c.r = c.r * shade / 100;
1104	c.g = c.g * shade / 100;
1105	c.b = c.b * shade / 100;
1106	}
1107	else
1108	{
1109	c.r = c.r * (200 - shade) / 100;
1110	c.g = c.g * (200 - shade) / 100;
1111	c.b = c.b * (200 - shade) / 100;
1112	}
1113
1114	XRenderPictFormat *solid_format = XRenderFindStandardFormat (dpy, PictStandardARGB32);
1115	XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
1116	XRenderPictureAttributes pa;
1117
1118	Picture back_pic = XRenderCreatePicture (dpy, pixmap, format, 0, &pa);
1119
1120	pa.repeat = True;
1121
1122	Pixmap overlay_pmap = XCreatePixmap (dpy, pixmap, 1, 1, 32);
1123	Picture overlay_pic = XRenderCreatePicture (dpy, overlay_pmap, solid_format, CPRepeat, &pa);
1124	XFreePixmap (dpy, overlay_pmap);
1125
1126	pa.component_alpha = True;
1127	Pixmap mask_pmap = XCreatePixmap (dpy, pixmap, 1, 1, 32);
1128	Picture mask_pic = XRenderCreatePicture (dpy, mask_pmap, solid_format, CPRepeat | CPComponentAlpha, &pa);
1129	XFreePixmap (dpy, mask_pmap);
1130
1131	XRenderColor mask_c;
1132
1133	mask_c.alpha = 0xffff;
1134	mask_c.red =
1135	mask_c.green =
1136	mask_c.blue = 0;
1137	XRenderFillRectangle (dpy, PictOpSrc, overlay_pic, &mask_c, 0, 0, 1, 1);
1138
1139	mask_c.alpha = 0;
1140	mask_c.red = 0xffff - c.r;
1141	mask_c.green = 0xffff - c.g;
1142	mask_c.blue = 0xffff - c.b;
1143	XRenderFillRectangle (dpy, PictOpSrc, mask_pic, &mask_c, 0, 0, 1, 1);
1144	XRenderComposite (dpy, PictOpOver, overlay_pic, mask_pic, back_pic, 0, 0, 0, 0, 0, 0, width, height);
1145
1146	if (shade > 100)
1147	{
1148	mask_c.red = mask_c.green = mask_c.blue = 0xffff * (shade - 100) / 100;
1149	mask_c.alpha = 0;
1150	XRenderFillRectangle (dpy, PictOpSrc, overlay_pic, &mask_c, 0, 0, 1, 1);
1151
1152	XRenderComposite (dpy, PictOpOver, overlay_pic, None, back_pic, 0, 0, 0, 0, 0, 0, width, height);
1153	}
1154
1155	ret = true;
1156
1157	XRenderFreePicture (dpy, mask_pic);
1158	XRenderFreePicture (dpy, overlay_pic);
1159	XRenderFreePicture (dpy, back_pic);
1160	# endif
1161	}
1162
1163	return ret;
1164	}
1165
1166	/*	440	/*
1167	* Builds a pixmap of the same size as the terminal window that contains	441	* Builds a pixmap of the same size as the terminal window that contains
1168	* the tiled portion of the root pixmap that is supposed to be covered by	442	* the tiled portion of the root pixmap that is supposed to be covered by
1169	* our window.	443	* our window.
1170	*/	444	*/
1171	unsigned long	445	bool
1172	rxvt_term::make_transparency_pixmap ()	446	rxvt_term::render_root_image ()
1173	{	447	{
1174	unsigned long result = 0;
1175
1176	/* root dimensions may change from call to call - but Display structure should	448	/* root dimensions may change from call to call - but Display structure should
1177	* be always up-to-date, so let's use it :	449	* be always up-to-date, so let's use it :
1178	*/	450	*/
1179	int screen = display->screen;	451	int screen = display->screen;
1180	int root_depth = DefaultDepth (dpy, screen);
1181	int root_width = DisplayWidth (dpy, screen);	452	int root_width = DisplayWidth (dpy, screen);
1182	int root_height = DisplayHeight (dpy, screen);	453	int root_height = DisplayHeight (dpy, screen);
1183	unsigned int root_pmap_width, root_pmap_height;
1184	int window_width = szHint.width;	454	int parent_width = szHint.width;
1185	int window_height = szHint.height;	455	int parent_height = szHint.height;
1186	int sx, sy;	456	int sx, sy;
1187	XGCValues gcv;
1188	GC gc;
1189		457
1190	sx = target_x;	458	sx = parent_x;
1191	sy = target_y;	459	sy = parent_y;
		460
		461	if (!root_img)
		462	return false;
1192		463
1193	/* check if we are outside of the visible part of the virtual screen : */	464	/* check if we are outside of the visible part of the virtual screen : */
1194	if (sx + window_width <= 0 || sy + window_height <= 0	465	if (sx + parent_width <= 0 || sy + parent_height <= 0
1195	|| sx >= root_width || sy >= root_height)	466	|| sx >= root_width || sy >= root_height)
1196	return 0;	467	return 0;
1197		468
1198	// validate root pixmap and get its size	469	while (sx < 0) sx += root_img->w;
1199	if (root_pixmap != None)	470	while (sy < 0) sy += root_img->h;
1200	{
1201	Window wdummy;
1202	int idummy;
1203	unsigned int udummy;
1204		471
1205	allowedxerror = -1;	472	rxvt_img *img = root_img->sub_rect (sx, sy, parent_width, parent_height);
1206		473
1207	if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pmap_width, &root_pmap_height, &udummy, &udummy))	474	if (root_effects.need_blur ())
1208	root_pixmap = None;	475	img->blur (root_effects.h_blurRadius, root_effects.v_blurRadius)->replace (img);
1209		476
1210	allowedxerror = 0;	477	if (root_effects.need_tint ())
1211	}	478	tint_image (img, root_effects.tint, root_effects.tint_set, root_effects.shade);
1212		479
1213	Pixmap recoded_root_pmap = root_pixmap;
1214
1215	if (root_pixmap != None && root_depth != depth)
1216	{
1217	#if XRENDER
1218	if (bg_flags & BG_HAS_RENDER)
1219	{
1220	recoded_root_pmap = XCreatePixmap (dpy, vt, root_pmap_width, root_pmap_height, depth);
1221
1222	XRenderPictureAttributes pa;
1223
1224	XRenderPictFormat *src_format = XRenderFindVisualFormat (dpy, DefaultVisual (dpy, screen));
1225	Picture src = XRenderCreatePicture (dpy, root_pixmap, src_format, 0, &pa);
1226
1227	XRenderPictFormat *dst_format = XRenderFindVisualFormat (dpy, visual);	480	XRenderPictFormat *format = XRenderFindVisualFormat (dpy, visual);
1228	Picture dst = XRenderCreatePicture (dpy, recoded_root_pmap, dst_format, 0, &pa);	481	img->convert_format (format, pix_colors [Color_bg])->replace (img);
1229		482
1230	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, root_pmap_width, root_pmap_height);	483	delete bg_img;
		484	bg_img = img;
1231		485
1232	XRenderFreePicture (dpy, src);
1233	XRenderFreePicture (dpy, dst);
1234	}
1235	else
1236	#endif
1237	recoded_root_pmap = None;
1238	}
1239
1240	if (recoded_root_pmap == None)
1241	return 0;
1242
1243	if (bg_pixmap == None
1244	|| bg_pmap_width != window_width
1245	|| bg_pmap_height != window_height)
1246	{
1247	if (bg_pixmap)
1248	XFreePixmap (dpy, bg_pixmap);
1249	bg_pixmap = XCreatePixmap (dpy, vt, window_width, window_height, depth);
1250	bg_pmap_width = window_width;
1251	bg_pmap_height = window_height;
1252	}
1253
1254	/* straightforward pixmap copy */
1255	while (sx < 0) sx += root_width;
1256	while (sy < 0) sy += root_height;
1257
1258	gcv.tile = recoded_root_pmap;
1259	gcv.fill_style = FillTiled;
1260	gcv.ts_x_origin = -sx;
1261	gcv.ts_y_origin = -sy;
1262	gc = XCreateGC (dpy, vt, GCFillStyle | GCTile | GCTileStipXOrigin | GCTileStipYOrigin, &gcv);
1263
1264	if (gc)
1265	{
1266	XFillRectangle (dpy, bg_pixmap, gc, 0, 0, window_width, window_height);
1267	result |= BG_IS_VALID | (bg_flags & BG_EFFECTS_FLAGS);
1268	XFreeGC (dpy, gc);
1269
1270	if (!(bg_flags & BG_CLIENT_RENDER))
1271	{
1272	if ((bg_flags & BG_NEEDS_BLUR)
1273	&& (bg_flags & BG_HAS_RENDER_CONV))
1274	{
1275	if (blur_pixmap (bg_pixmap, visual, window_width, window_height))
1276	result &= ~BG_NEEDS_BLUR;
1277	}
1278	if ((bg_flags & BG_NEEDS_TINT)
1279	&& (bg_flags & (BG_TINT_BITAND | BG_HAS_RENDER)))
1280	{
1281	if (tint_pixmap (bg_pixmap, visual, window_width, window_height))
1282	result &= ~BG_NEEDS_TINT;
1283	}
1284	} /* server side rendering completed */
1285	}
1286
1287	if (recoded_root_pmap != root_pixmap)
1288	XFreePixmap (dpy, recoded_root_pmap);
1289
1290	return result;	486	return true;
1291	}	487	}
1292		488
1293	void	489	void
1294	rxvt_term::bg_set_root_pixmap ()	490	rxvt_term::bg_set_root_pixmap ()
1295	{	491	{
1296	Pixmap new_root_pixmap = get_pixmap_property (xa[XA_XROOTPMAP_ID]);	492	delete root_img;
1297	if (new_root_pixmap == None)	493	root_img = rxvt_img::new_from_root (this);
1298	new_root_pixmap = get_pixmap_property (xa[XA_ESETROOT_PMAP_ID]);
1299
1300	root_pixmap = new_root_pixmap;
1301	}	494	}
1302	# endif /* ENABLE_TRANSPARENCY */	495	# endif /* BG_IMAGE_FROM_ROOT */
1303		496
1304	#if defined(ENABLE_TRANSPARENCY) && !defined(HAVE_AFTERIMAGE)	497	void
1305	static void shade_ximage (Visual *visual, XImage *ximage, int shade, const rgba &c);
1306	# endif
1307
1308	bool
1309	rxvt_term::bg_render ()	498	rxvt_term::bg_render ()
1310	{	499	{
1311	unsigned long tr_flags = 0;	500	if (bg_flags & BG_INHIBIT_RENDER)
		501	return;
1312		502
1313	bg_invalidate ();	503	bg_invalidate ();
1314	# ifdef ENABLE_TRANSPARENCY	504	# if BG_IMAGE_FROM_ROOT
1315	if (bg_flags & BG_IS_TRANSPARENT)	505	if (option (Opt_transparent))
1316	{	506	{
1317	/* we need to re-generate transparency pixmap in that case ! */	507	/* we need to re-generate transparency pixmap in that case ! */
1318	tr_flags = make_transparency_pixmap ();	508	if (render_root_image ())
1319	if (tr_flags == 0)	509	bg_flags |= BG_IS_VALID | BG_IS_TRANSPARENT;
1320	return false;	510	}
1321	else if (!(tr_flags & BG_EFFECTS_FLAGS))	511	# endif
		512
		513	# if BG_IMAGE_FROM_FILE
		514	if (fimage.img)
		515	{
		516	if (render_image (fimage))
1322	bg_flags |= BG_IS_VALID;	517	bg_flags |= BG_IS_VALID;
1323	}	518	}
1324	# endif	519	# endif
1325		520
1326	# ifdef BG_IMAGE_FROM_FILE
1327	if ((bg_flags & BG_IS_FROM_FILE)
1328	|| (tr_flags & BG_EFFECTS_FLAGS))
1329	{
1330	if (render_image (tr_flags))
1331	bg_flags |= BG_IS_VALID;
1332	}
1333	# endif
1334
1335	# if defined(ENABLE_TRANSPARENCY) && !defined(HAVE_AFTERIMAGE)
1336	XImage *result = NULL;
1337
1338	if (tr_flags && !(bg_flags & BG_IS_VALID))
1339	{
1340	result = XGetImage (dpy, bg_pixmap, 0, 0, bg_pmap_width, bg_pmap_height, AllPlanes, ZPixmap);
1341	}
1342
1343	if (result)
1344	{
1345	/* our own client-side tinting */
1346	if (tr_flags & BG_NEEDS_TINT)
1347	{
1348	rgba c (rgba::MAX_CC,rgba::MAX_CC,rgba::MAX_CC);
1349	if (bg_flags & BG_TINT_SET)
1350	tint.get (c);
1351	shade_ximage (DefaultVisual (dpy, display->screen), result, shade, c);
1352	}
1353
1354	GC gc = XCreateGC (dpy, vt, 0UL, NULL);
1355
1356	if (gc)
1357	{
1358	XPutImage (dpy, bg_pixmap, gc, result, 0, 0, 0, 0, result->width, result->height);
1359
1360	XFreeGC (dpy, gc);
1361	bg_flags |= BG_IS_VALID;
1362	}
1363
1364	XDestroyImage (result);
1365	}
1366	# endif
1367
1368	if (!(bg_flags & BG_IS_VALID))	521	if (!(bg_flags & BG_IS_VALID))
1369	{	522	{
1370	if (bg_pixmap != None)	523	delete bg_img;
1371	{	524	bg_img = 0;
1372	XFreePixmap (dpy, bg_pixmap);
1373	bg_pixmap = None;
1374	}
1375	}	525	}
1376		526
1377	scr_recolour (false);	527	scr_recolour (false);
1378	bg_flags |= BG_NEEDS_REFRESH;	528	bg_flags |= BG_NEEDS_REFRESH;
1379		529
1380	bg_valid_since = ev::now ();	530	bg_valid_since = ev::now ();
1381
1382	return true;
1383	}	531	}
1384		532
1385	void	533	void
1386	rxvt_term::bg_init ()	534	rxvt_term::bg_init ()
1387	{	535	{
1388	#ifdef ENABLE_TRANSPARENCY	536	#if BG_IMAGE_FROM_ROOT
1389	shade = 100;	537	if (option (Opt_transparent))
		538	{
		539	if (rs [Rs_blurradius])
		540	root_effects.set_blur (rs [Rs_blurradius]);
		541
		542	if (ISSET_PIXCOLOR (Color_tint))
		543	root_effects.set_tint (pix_colors_focused [Color_tint]);
		544
		545	if (rs [Rs_shade])
		546	root_effects.set_shade (rs [Rs_shade]);
		547
		548	bg_set_root_pixmap ();
		549	XSelectInput (dpy, display->root, PropertyChangeMask);
		550	rootwin_ev.start (display, display->root);
		551	}
1390	#endif	552	#endif
1391		553
1392	bg_flags &= ~(BG_HAS_RENDER | BG_HAS_RENDER_CONV);	554	#if BG_IMAGE_FROM_FILE
1393	#if XRENDER	555	if (rs[Rs_backgroundPixmap])
1394	int major, minor;
1395	if (XRenderQueryVersion (dpy, &major, &minor))
1396	bg_flags |= BG_HAS_RENDER;
1397	XFilters *filters = XRenderQueryFilters (dpy, vt);
1398	if (filters)
1399	{	556	{
1400	for (int i = 0; i < filters->nfilter; i++)	557	fimage.set_file_geometry (this, rs[Rs_backgroundPixmap]);
1401	if (!strcmp (filters->filter[i], FilterConvolution))	558	if (!bg_window_position_sensitive ())
1402	bg_flags |= BG_HAS_RENDER_CONV;	559	update_background ();
1403
1404	XFree (filters);
1405	}	560	}
1406	#endif	561	#endif
1407	}	562	}
1408		563
		564	void
		565	rxvt_term::tint_image (rxvt_img *img, rxvt_color &tint, bool tint_set, int shade)
		566	{
		567	rgba c (rgba::MAX_CC, rgba::MAX_CC, rgba::MAX_CC);
		568
		569	if (tint_set)
		570	tint.get (c);
		571
		572	if (shade > 100)
		573	{
		574	c.r = c.r * (200 - shade) / 100;
		575	c.g = c.g * (200 - shade) / 100;
		576	c.b = c.b * (200 - shade) / 100;
		577	}
		578	else
		579	{
		580	c.r = c.r * shade / 100;
		581	c.g = c.g * shade / 100;
		582	c.b = c.b * shade / 100;
		583	}
		584
		585	img->contrast (c.r, c.g, c.b, c.a);
		586
		587	if (shade > 100)
		588	{
		589	c.a = 0xffff;
		590	c.r =
		591	c.g =
		592	c.b = 0xffff * (shade - 100) / 100;
		593	img->brightness (c.r, c.g, c.b, c.a);
		594	}
		595	}
		596
1409	#endif /* HAVE_BG_PIXMAP */	597	#endif /* HAVE_BG_PIXMAP */
1410
1411	#if defined(ENABLE_TRANSPARENCY) && !defined(HAVE_AFTERIMAGE)
1412	/* taken from aterm-0.4.2 */
1413
1414	static void
1415	shade_ximage (Visual *visual, XImage *ximage, int shade, const rgba &c)
1416	{
1417	int sh_r, sh_g, sh_b;
1418	uint32_t mask_r, mask_g, mask_b;
1419	uint32_t *lookup, *lookup_r, *lookup_g, *lookup_b;
1420	rgba low;
1421	rgba high;
1422	int i;
1423	int host_byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
1424
1425	if (visual->c_class != TrueColor || ximage->format != ZPixmap) return;
1426
1427	/* for convenience */
1428	mask_r = visual->red_mask;
1429	mask_g = visual->green_mask;
1430	mask_b = visual->blue_mask;
1431
1432	/* boring lookup table pre-initialization */
1433	switch (ximage->depth)
1434	{
1435	case 15:
1436	if ((mask_r != 0x7c00) ||
1437	(mask_g != 0x03e0) ||
1438	(mask_b != 0x001f))
1439	return;
1440	lookup = (uint32_t *) malloc (sizeof (uint32_t)*(32+32+32));
1441	lookup_r = lookup;
1442	lookup_g = lookup+32;
1443	lookup_b = lookup+32+32;
1444	sh_r = 10;
1445	sh_g = 5;
1446	sh_b = 0;
1447	break;
1448	case 16:
1449	if ((mask_r != 0xf800) ||
1450	(mask_g != 0x07e0) ||
1451	(mask_b != 0x001f))
1452	return;
1453	lookup = (uint32_t *) malloc (sizeof (uint32_t)*(32+64+32));
1454	lookup_r = lookup;
1455	lookup_g = lookup+32;
1456	lookup_b = lookup+32+64;
1457	sh_r = 11;
1458	sh_g = 5;
1459	sh_b = 0;
1460	break;
1461	case 24:
1462	if ((mask_r != 0xff0000) ||
1463	(mask_g != 0x00ff00) ||
1464	(mask_b != 0x0000ff))
1465	return;
1466	lookup = (uint32_t *) malloc (sizeof (uint32_t)*(256+256+256));
1467	lookup_r = lookup;
1468	lookup_g = lookup+256;
1469	lookup_b = lookup+256+256;
1470	sh_r = 16;
1471	sh_g = 8;
1472	sh_b = 0;
1473	break;
1474	case 32:
1475	if ((mask_r != 0xff0000) ||
1476	(mask_g != 0x00ff00) ||
1477	(mask_b != 0x0000ff))
1478	return;
1479	lookup = (uint32_t *) malloc (sizeof (uint32_t)*(256+256+256));
1480	lookup_r = lookup;
1481	lookup_g = lookup+256;
1482	lookup_b = lookup+256+256;
1483	sh_r = 16;
1484	sh_g = 8;
1485	sh_b = 0;
1486	break;
1487	default:
1488	return; /* we do not support this color depth */
1489	}
1490
1491	/* prepare limits for color transformation (each channel is handled separately) */
1492	if (shade > 100)
1493	{
1494	shade = 200 - shade;
1495
1496	high.r = c.r * shade / 100;
1497	high.g = c.g * shade / 100;
1498	high.b = c.b * shade / 100;
1499
1500	low.r = 65535 * (100 - shade) / 100;
1501	low.g = 65535 * (100 - shade) / 100;
1502	low.b = 65535 * (100 - shade) / 100;
1503	}
1504	else
1505	{
1506	high.r = c.r * shade / 100;
1507	high.g = c.g * shade / 100;
1508	high.b = c.b * shade / 100;
1509
1510	low.r = low.g = low.b = 0;
1511	}
1512
1513	/* fill our lookup tables */
1514	for (i = 0; i <= mask_r>>sh_r; i++)
1515	{
1516	uint32_t tmp;
1517	tmp = i * high.r;
1518	tmp += (mask_r>>sh_r) * low.r;
1519	lookup_r[i] = (tmp/65535)<<sh_r;
1520	}
1521	for (i = 0; i <= mask_g>>sh_g; i++)
1522	{
1523	uint32_t tmp;
1524	tmp = i * high.g;
1525	tmp += (mask_g>>sh_g) * low.g;
1526	lookup_g[i] = (tmp/65535)<<sh_g;
1527	}
1528	for (i = 0; i <= mask_b>>sh_b; i++)
1529	{
1530	uint32_t tmp;
1531	tmp = i * high.b;
1532	tmp += (mask_b>>sh_b) * low.b;
1533	lookup_b[i] = (tmp/65535)<<sh_b;
1534	}
1535
1536	/* apply table to input image (replacing colors by newly calculated ones) */
1537	if (ximage->bits_per_pixel == 32
1538	&& (ximage->depth == 24 || ximage->depth == 32)
1539	&& ximage->byte_order == host_byte_order)
1540	{
1541	uint32_t *p1, *pf, *p, *pl;
1542	p1 = (uint32_t *) ximage->data;
1543	pf = (uint32_t *) (ximage->data + ximage->height * ximage->bytes_per_line);
1544
1545	while (p1 < pf)
1546	{
1547	p = p1;
1548	pl = p1 + ximage->width;
1549	for (; p < pl; p++)
1550	{
1551	*p = lookup_r[(*p & 0xff0000) >> 16] |
1552	lookup_g[(*p & 0x00ff00) >> 8] |
1553	lookup_b[(*p & 0x0000ff)] |
1554	(*p & 0xff000000);
1555	}
1556	p1 = (uint32_t *) ((char *) p1 + ximage->bytes_per_line);
1557	}
1558	}
1559	else
1560	{
1561	for (int y = 0; y < ximage->height; y++)
1562	for (int x = 0; x < ximage->width; x++)
1563	{
1564	unsigned long pixel = XGetPixel (ximage, x, y);
1565	pixel = lookup_r[(pixel & mask_r) >> sh_r] |
1566	lookup_g[(pixel & mask_g) >> sh_g] |
1567	lookup_b[(pixel & mask_b) >> sh_b];
1568	XPutPixel (ximage, x, y, pixel);
1569	}
1570	}
1571
1572	free (lookup);
1573	}
1574	#endif /* defined(ENABLE_TRANSPARENCY) && !defined(HAVE_AFTERIMAGE) */

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