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

Comparing rxvt-unicode/src/perl/background (file contents):
Revision 1.82 by sf-exg, Sat Jan 19 10:04:34 2013 UTC vs.
Revision 1.100 by root, Sat Jul 24 09:48:43 2021 UTC

…		…
1	#! perl	1	#! perl
2		2
3	#:META:X_RESOURCE:%.expr:string:background expression	3	#:META:RESOURCE:%.expr:string:background expression
4	#:META:X_RESOURCE:%.border:boolean:respect the terminal border	4	#:META:RESOURCE:%.border:boolean:respect the terminal border
5	#:META:X_RESOURCE:%.interval:seconds:minimum time between updates	5	#:META:RESOURCE:%.interval:seconds:minimum time between updates
		6	#:META:RESOURCE:pixmap:file[;geom]:set image as background
		7	#:META:RESOURCE:backgroundPixmap:file[;geom]:set image as background
		8	#:META:RESOURCE:tr:boolean:set root pixmap as background
		9	#:META:RESOURCE:transparent:boolean:set root pixmap as background
		10	#:META:RESOURCE:tint:color:tint background with color
		11	#:META:RESOURCE:tintColor:color:tint background with color
		12	#:META:RESOURCE:sh:number:shade background by number %
		13	#:META:RESOURCE:shading:number:shade background by number %
		14	#:META:RESOURCE:blr:HxV:gaussian-blur background with radii
		15	#:META:RESOURCE:blurRadius:HxV:gaussian-blur background with radii
6		16
7	=head1 NAME	17	=head1 NAME
8		18
9	background - manage terminal background	19	background - manage terminal background
10		20
14	--background-border	24	--background-border
15	--background-interval seconds	25	--background-interval seconds
16		26
17	=head1 QUICK AND DIRTY CHEAT SHEET	27	=head1 QUICK AND DIRTY CHEAT SHEET
18		28
19	Just load a random jpeg image and tile the background with it without	29	Load a random jpeg image and tile the background with it without scaling
20	scaling or anything else:	30	or anything else:
21		31
22	load "/path/to/img.jpg"	32	load "/path/to/img.jpg"
23		33
24	The same, but use mirroring/reflection instead of tiling:	34	The same, but use mirroring/reflection instead of tiling:
25		35
…		…
54		64
55	urxvt --background-expr 'scale keep { load "/path/to/mybg.png" }'	65	urxvt --background-expr 'scale keep { load "/path/to/mybg.png" }'
56		66
57	Or specified as a X resource:	67	Or specified as a X resource:
58		68
59	URxvt.background-expr: scale keep { load "/path/to/mybg.png" }	69	URxvt.background.expr: scale keep { load "/path/to/mybg.png" }
60		70
61	=head1 THEORY OF OPERATION	71	=head1 THEORY OF OPERATION
62		72
63	At startup, just before the window is mapped for the first time, the	73	At startup, just before the window is mapped for the first time, the
64	expression is evaluated and must yield an image. The image is then	74	expression is evaluated and must yield an image. The image is then
…		…
132	get a percentage):	142	get a percentage):
133		143
134	scale 2, load "$HOME/mypic.png"	144	scale 2, load "$HOME/mypic.png"
135		145
136	This enlarges the image by a factor of 2 (200%). As you can see, C<scale>	146	This enlarges the image by a factor of 2 (200%). As you can see, C<scale>
137	has now two arguments, the C<200> and the C<load> expression, while	147	has now two arguments, the C<2> and the C<load> expression, while
138	C<load> only has one argument. Arguments are separated from each other by	148	C<load> only has one argument. Arguments are separated from each other by
139	commas.	149	commas.
140		150
141	Scale also accepts two arguments, which are then separate factors for both	151	Scale also accepts two arguments, which are then separate factors for both
142	horizontal and vertical dimensions. For example, this halves the image	152	horizontal and vertical dimensions. For example, this halves the image
…		…
249		259
250	=head1 REFERENCE	260	=head1 REFERENCE
251		261
252	=head2 COMMAND LINE SWITCHES	262	=head2 COMMAND LINE SWITCHES
253		263
254	=over 4	264	=over
255		265
256	=item --background-expr perl-expression	266	=item --background-expr perl-expression
257		267
258	Specifies the Perl expression to evaluate.	268	Specifies the Perl expression to evaluate.
259		269
…		…
279	=cut	289	=cut
280		290
281	our %_IMG_CACHE;	291	our %_IMG_CACHE;
282	our $HOME;	292	our $HOME;
283	our ($self, $frame);	293	our ($self, $frame);
284	our ($x, $y, $w, $h);	294	our ($x, $y, $w, $h, $focus);
285		295
286	# enforce at least this interval between updates	296	# enforce at least this interval between updates
287	our $MIN_INTERVAL = 6/59.951;	297	our $MIN_INTERVAL = 6/59.951;
288		298
289	{	299	{
…		…
300		310
301	These functions provide an image, by loading it from disk, grabbing it	311	These functions provide an image, by loading it from disk, grabbing it
302	from the root screen or by simply generating it. They are used as starting	312	from the root screen or by simply generating it. They are used as starting
303	points to get an image you can play with.	313	points to get an image you can play with.
304		314
305	=over 4	315	=over
306		316
307	=item load $path	317	=item load $path
308		318
309	Loads the image at the given C<$path>. The image is set to plane tiling	319	Loads the image at the given C<$path>. The image is set to plane tiling
310	mode.	320	mode.
311		321
312	If the image is already in memory (e.g. because another terminal instance	322	If the image is already in memory (e.g. because another terminal instance
313	uses it), then the in-memory copy us returned instead.	323	uses it), then the in-memory copy is returned instead.
314		324
315	=item load_uc $path	325	=item load_uc $path
316		326
317	Load uncached - same as load, but does not cache the image, which means it	327	Load uncached - same as load, but does not cache the image, which means it
318	is I<always> loaded from the filesystem again, even if another copy of it	328	is I<always> loaded from the filesystem again, even if another copy of it
…		…
429	=head2 TILING MODES	439	=head2 TILING MODES
430		440
431	The following operators modify the tiling mode of an image, that is, the	441	The following operators modify the tiling mode of an image, that is, the
432	way that pixels outside the image area are painted when the image is used.	442	way that pixels outside the image area are painted when the image is used.
433		443
434	=over 4	444	=over
435		445
436	=item tile $img	446	=item tile $img
437		447
438	Tiles the whole plane with the image and returns this new image - or in	448	Tiles the whole plane with the image and returns this new image - or in
439	other words, it returns a copy of the image in plane tiling mode.	449	other words, it returns a copy of the image in plane tiling mode.
…		…
514	dimensions. They are not (Perl-) variables, they just return stuff that	524	dimensions. They are not (Perl-) variables, they just return stuff that
515	varies. Most of them make your expression sensitive to some events, for	525	varies. Most of them make your expression sensitive to some events, for
516	example using C<TW> (terminal width) means your expression is evaluated	526	example using C<TW> (terminal width) means your expression is evaluated
517	again when the terminal is resized.	527	again when the terminal is resized.
518		528
519	=over 4	529	=over
520		530
521	=item TX	531	=item TX
522		532
523	=item TY	533	=item TY
524		534
525	Return the X and Y coordinates of the terminal window (the terminal	535	Return the X and Y coordinates of the terminal window (the terminal
526	window is the full window by default, and the character area only when in	536	window is the full window by default, and the character area only when in
527	border-respect mode).	537	border-respect mode).
528		538
529	Using these functions make your expression sensitive to window moves.	539	Using these functions makes your expression sensitive to window moves.
530		540
531	These functions are mainly useful to align images to the root window.	541	These functions are mainly useful to align images to the root window.
532		542
533	Example: load an image and align it so it looks as if anchored to the	543	Example: load an image and align it so it looks as if anchored to the
534	background (that's exactly what C<rootalign> does btw.):	544	background (that's exactly what C<rootalign> does btw.):
…		…
541		551
542	Return the width (C<TW>) and height (C<TH>) of the terminal window (the	552	Return the width (C<TW>) and height (C<TH>) of the terminal window (the
543	terminal window is the full window by default, and the character area only	553	terminal window is the full window by default, and the character area only
544	when in border-respect mode).	554	when in border-respect mode).
545		555
546	Using these functions make your expression sensitive to window resizes.	556	Using these functions makes your expression sensitive to window resizes.
547		557
548	These functions are mainly useful to scale images, or to clip images to	558	These functions are mainly useful to scale images, or to clip images to
549	the window size to conserve memory.	559	the window size to conserve memory.
550		560
551	Example: take the screen background, clip it to the window size, blur it a	561	Example: take the screen background, clip it to the window size, blur it a
552	bit, align it to the window position and use it as background.	562	bit, align it to the window position and use it as background.
553		563
554	clip move -TX, -TY, keep { blur 5, root }	564	clip move -TX, -TY, keep { blur 5, root }
555		565
556	=cut	566	=item FOCUS
557		567
		568	Returns a boolean indicating whether the terminal window has keyboard
		569	focus, in which case it returns true.
		570
		571	Using this function makes your expression sensitive to focus changes.
		572
		573	A common use case is to fade the background image when the terminal loses
		574	focus, often together with the C<-fade> command line option. In fact,
		575	there is a special function for just that use case: C<focus_fade>.
		576
		577	Example: use two entirely different background images, depending on
		578	whether the window has focus.
		579
		580	FOCUS ? keep { load "has_focus.jpg" } : keep { load "no_focus.jpg" }
		581
		582	=cut
		583
558	sub TX() { $frame->[FR_AGAIN]{position} = 1; $x }	584	sub TX () { $frame->[FR_AGAIN]{position} = 1; $x }
559	sub TY() { $frame->[FR_AGAIN]{position} = 1; $y }	585	sub TY () { $frame->[FR_AGAIN]{position} = 1; $y }
560	sub TW() { $frame->[FR_AGAIN]{size} = 1; $w }	586	sub TW () { $frame->[FR_AGAIN]{size} = 1; $w }
561	sub TH() { $frame->[FR_AGAIN]{size} = 1; $h }	587	sub TH () { $frame->[FR_AGAIN]{size} = 1; $h }
		588	sub FOCUS() { $frame->[FR_AGAIN]{focus} = 1; $focus }
562		589
563	=item now	590	=item now
564		591
565	Returns the current time as (fractional) seconds since the epoch.	592	Returns the current time as (fractional) seconds since the epoch.
566		593
…		…
600		627
601	=head2 SHAPE CHANGING OPERATORS	628	=head2 SHAPE CHANGING OPERATORS
602		629
603	The following operators modify the shape, size or position of the image.	630	The following operators modify the shape, size or position of the image.
604		631
605	=over 4	632	=over
606		633
607	=item clip $img	634	=item clip $img
608		635
609	=item clip $width, $height, $img	636	=item clip $width, $height, $img
610		637
…		…
797		824
798	=head2 COLOUR MODIFICATIONS	825	=head2 COLOUR MODIFICATIONS
799		826
800	The following operators change the pixels of the image.	827	The following operators change the pixels of the image.
801		828
802	=over 4	829	=over
803		830
804	=item tint $color, $img	831	=item tint $color, $img
805		832
806	Tints the image in the given colour.	833	Tints the image in the given colour.
807		834
…		…
932	sub blur($$;$) {	959	sub blur($$;$) {
933	my $img = pop;	960	my $img = pop;
934	$img->blur ($_[0], @_ >= 2 ? $_[1] : $_[0])	961	$img->blur ($_[0], @_ >= 2 ? $_[1] : $_[0])
935	}	962	}
936		963
		964	=item focus_fade $img
		965
		966	=item focus_fade $factor, $img
		967
		968	=item focus_fade $factor, $color, $img
		969
		970	Fades the image by the given factor (and colour) when focus is lost (the
		971	same as the C<-fade>/C<-fadecolor> command line options, which also supply
		972	the default values for C<factor> and C<$color>. Unlike with C<-fade>, the
		973	C<$factor> is a real value, not a percentage value (that is, 0..1, not
		974	0..100).
		975
		976	Example: do the right thing when focus fading is requested.
		977
		978	focus_fade load "mybg.jpg";
		979
		980	=cut
		981
		982	sub focus_fade($;$$) {
		983	my $img = pop;
		984
		985	return $img
		986	if FOCUS;
		987
		988	my $fade = @_ >= 1 ? $_[0] : defined $self->resource ("fade") ? $self->resource ("fade") * 0.01 : 0;
		989	my $color = @_ >= 2 ? $_[1] : $self->resource ("color+" . urxvt::Color_fade);
		990
		991	$img = $img->tint ($color) if $color ne "rgb:00/00/00";
		992	$img = $img->muladd (1 - $fade, 0) if $fade;
		993
		994	$img
		995	}
		996
937	=back	997	=back
938		998
939	=head2 OTHER STUFF	999	=head2 OTHER STUFF
940		1000
941	Anything that didn't fit any of the other categories, even after applying	1001	Anything that didn't fit any of the other categories, even after applying
942	force and closing our eyes.	1002	force and closing our eyes.
943		1003
944	=over 4	1004	=over
945		1005
946	=item keep { ... }	1006	=item keep { ... }
947		1007
948	This operator takes a code block as argument, that is, one or more	1008	This operator takes a code block as argument, that is, one or more
949	statements enclosed by braces.	1009	statements enclosed by braces.
…		…
971		1031
972	This leaves the question of how to force reevaluation of the block,	1032	This leaves the question of how to force reevaluation of the block,
973	in case the root background changes: If expression inside the block	1033	in case the root background changes: If expression inside the block
974	is sensitive to some event (root background changes, window geometry	1034	is sensitive to some event (root background changes, window geometry
975	changes), then it will be reevaluated automatically as needed.	1035	changes), then it will be reevaluated automatically as needed.
		1036
		1037	=back
		1038
		1039	=head1 OLD BACKGROUND IMAGE SETTINGS
		1040
		1041	This extension also provides support for the old options/resources and
		1042	OSC sequences for setting a background image. These settings are
		1043	B<deprecated> and will be removed in future versions.
		1044
		1045	=head2 OPTIONS AND RESOURCES
		1046
		1047	=over
		1048
		1049	=item B<-pixmap> I<file[;oplist]>
		1050
		1051	=item B<backgroundPixmap:> I<file[;oplist]>
		1052
		1053	Use the specified image file as the window's background and also
		1054	optionally specify a colon separated list of operations to modify it.
		1055	Note that you may need to quote the C<;> character when using the
		1056	command line option, as C<;> is usually a metacharacter in shells.
		1057	Supported operations are:
		1058
		1059	=over
		1060
		1061	=item B<WxH+X+Y>
		1062
		1063	sets scale and position. B<"W" / "H"> specify the horizontal/vertical
		1064	scale (percent), and B<"X" / "Y"> locate the image centre (percent). A
		1065	scale of 0 disables scaling.
		1066
		1067	=item B<op=tile>
		1068
		1069	enables tiling
		1070
		1071	=item B<op=keep-aspect>
		1072
		1073	maintain the image aspect ratio when scaling
		1074
		1075	=item B<op=root-align>
		1076
		1077	use the position of the terminal window relative to the root window as
		1078	the image offset, simulating a root window background
		1079
		1080	=back
		1081
		1082	The default scale and position setting is C<100x100+50+50>.
		1083	Alternatively, a predefined set of templates can be used to achieve
		1084	the most common setups:
		1085
		1086	=over
		1087
		1088	=item B<style=tiled>
		1089
		1090	the image is tiled with no scaling. Equivalent to 0x0+0+0:op=tile
		1091
		1092	=item B<style=aspect-stretched>
		1093
		1094	the image is scaled to fill the whole window maintaining the aspect
		1095	ratio and centered. Equivalent to 100x100+50+50:op=keep-aspect
		1096
		1097	=item B<style=stretched>
		1098
		1099	the image is scaled to fill the whole window. Equivalent to 100x100
		1100
		1101	=item B<style=centered>
		1102
		1103	the image is centered with no scaling. Equivalent to 0x0+50+50
		1104
		1105	=item B<style=root-tiled>
		1106
		1107	the image is tiled with no scaling and using 'root' positioning.
		1108	Equivalent to 0x0:op=tile:op=root-align
		1109
		1110	=back
		1111
		1112	If multiple templates are specified the last one wins. Note that a
		1113	template overrides all the scale, position and operations settings.
		1114
		1115	If used in conjunction with pseudo-transparency, the specified image
		1116	will be blended over the transparent background using alpha-blending.
		1117
		1118	=item B<-tr>\|B<+tr>
		1119
		1120	=item B<transparent:> I<boolean>
		1121
		1122	Turn on/off pseudo-transparency by using the root pixmap as background.
		1123
		1124	=item B<-tint> I<colour>
		1125
		1126	=item B<tintColor:> I<colour>
		1127
		1128	Tint the transparent background with the given colour. Note that a
		1129	black tint yields a completely black image while a white tint yields
		1130	the image unchanged.
		1131
		1132	=item B<-sh> I<number>
		1133
		1134	=item B<shading:> I<number>
		1135
		1136	Darken (0 .. 99) or lighten (101 .. 200) the transparent background.
		1137	A value of 100 means no shading.
		1138
		1139	=item B<-blr> I<HxV>
		1140
		1141	=item B<blurRadius:> I<HxV>
		1142
		1143	Apply gaussian blur with the specified radius to the transparent
		1144	background. If a single number is specified, the vertical and
		1145	horizontal radii are considered to be the same. Setting one of the
		1146	radii to 1 and the other to a large number creates interesting effects
		1147	on some backgrounds. The maximum radius value is 128. An horizontal or
		1148	vertical radius of 0 disables blurring.
		1149
		1150	=back
		1151
		1152	=head2 OSC sequences
		1153
		1154	This extension will react to the following OSC sequences. Note that
		1155	this extension will not be autoloaded when these are used currently,
		1156	so to make urxvt recognize them, you have to enable the C<background>
		1157	extension. One way to achieve that is to use the C<--background-expr ''>
		1158	command line argument or by specifying an empty C<URxvt.background.expr:>>
		1159	resource.
		1160
		1161	=over
		1162
		1163	=item B<< C<ESC ] 705 ; Pt ST> >> Change transparent background tint colour to B<< C<Pt> >>.
		1164
		1165	=item B<< C<ESC ] 20 ; Pt ST> >> Change/Query background image
		1166	parameters: the value of B<< C<Pt> >> can be one of the following
		1167	commands:
		1168
		1169	=over
		1170
		1171	=item B<< C<?> >>
		1172
		1173	display scale and position in the title
		1174
		1175	=item B<< C<;WxH+X+Y> >>
		1176
		1177	change scale and/or position
		1178
		1179	=item B<< C<FILE;WxH+X+Y> >>
		1180
		1181	change background image
		1182
		1183	=back
976		1184
977	=cut	1185	=cut
978		1186
979	sub keep(&) {	1187	sub keep(&) {
980	my $id = $_[0]+0;	1188	my $id = $_[0]+0;
…		…
1013	=cut	1221	=cut
1014		1222
1015	}	1223	}
1016		1224
1017	sub parse_expr {	1225	sub parse_expr {
		1226	my ($expr) = @_;
		1227
		1228	# an empty expression is valid and represents the default background
		1229	if ($expr !~ /\S/) {
		1230	$expr = sub {
		1231	undef
		1232	};
		1233	} else {
1018	my $expr = eval	1234	$expr = eval
1019	"sub {\n"	1235	"sub {\n"
1020	. "package urxvt::bgdsl;\n"	1236	. "package urxvt::bgdsl;\n"
1021	. "#line 0 'background expression'\n"	1237	. "#line 0 'background expression'\n"
1022	. "$_[0]\n"	1238	. "$expr\n"
1023	. "}";	1239	. "}";
1024	die if $@;	1240	die if $@;
		1241	}
		1242
1025	$expr	1243	$expr
1026	}	1244	}
1027		1245
1028	# compiles a parsed expression	1246	# compiles a parsed expression
1029	sub set_expr {	1247	sub set_expr {
…		…
1078	if ($again->{rootpmap}) {	1296	if ($again->{rootpmap}) {
1079	$state->{rootpmap} = $self->on (rootpmap_change => $cb);	1297	$state->{rootpmap} = $self->on (rootpmap_change => $cb);
1080	} else {	1298	} else {
1081	delete $state->{rootpmap};	1299	delete $state->{rootpmap};
1082	}	1300	}
		1301
		1302	if ($again->{focus}) {
		1303	$state->{focus} = $self->on (focus_in => $cb, focus_out => $cb);
		1304	} else {
		1305	delete $state->{focus};
		1306	}
1083	}	1307	}
1084		1308
1085	# evaluate the current bg expression	1309	# evaluate the current bg expression
1086	sub recalculate {	1310	sub recalculate {
1087	my ($arg_self) = @_;	1311	my ($arg_self) = @_;
…		…
1095	return;	1319	return;
1096	}	1320	}
1097		1321
1098	$arg_self->{next_refresh} = urxvt::NOW + $MIN_INTERVAL;	1322	$arg_self->{next_refresh} = urxvt::NOW + $MIN_INTERVAL;
1099		1323
		1324	unless ($arg_self->has_render) {
		1325	warn "background extension needs RENDER extension 0.10 or higher, ignoring background-expr.\n";
		1326	return;
		1327	}
		1328
1100	# set environment to evaluate user expression	1329	# set environment to evaluate user expression
1101		1330
1102	local $self = $arg_self;	1331	local $self = $arg_self;
1103	local $HOME = $ENV{HOME};	1332	local $HOME = $ENV{HOME};
1104	local $frame = $self->{root};	1333	local $frame = $self->{root};
1105		1334
1106	($x, $y, $w, $h) = $self->background_geometry ($self->{border});	1335	($x, $y, $w, $h) = $self->background_geometry ($self->{border});
		1336	$focus = $self->focus;
1107		1337
1108	# evaluate user expression	1338	# evaluate user expression
1109		1339
1110	my @img = eval { $self->{expr}->() };	1340	my @img = eval { $self->{expr}->() };
1111	die $@ if $@;	1341	die $@ if $@;
1112	die "background-expr did not return anything.\n" unless @img;	1342	die "background-expr did not return anything.\n" unless @img;
		1343
		1344	if ($img[0]) {
1113	die "background-expr: expected image(s), got something else.\n"	1345	die "background-expr: expected image(s), got something else.\n"
1114	if grep { !UNIVERSAL::isa $_, "urxvt::img" } @img;	1346	if grep { !UNIVERSAL::isa $_, "urxvt::img" } @img;
1115		1347
1116	my $img = urxvt::bgdsl::merge @img;	1348	my $img = urxvt::bgdsl::merge @img;
1117		1349
1118	$frame->[FR_AGAIN]{size} = 1	1350	$frame->[FR_AGAIN]{size} = 1
1119	if $img->repeat_mode != urxvt::RepeatNormal;	1351	if $img->repeat_mode != urxvt::RepeatNormal;
1120		1352
1121	# if the expression is sensitive to external events, prepare reevaluation then	1353	# if the expression is sensitive to external events, prepare reevaluation then
1122	$self->compile_frame ($frame, sub { $arg_self->recalculate });	1354	$self->compile_frame ($frame, sub { $arg_self->recalculate });
1123		1355
1124	# clear stuff we no longer need	1356	# clear stuff we no longer need
1125		1357
1126	# unless (%{ $frame->[FR_STATE] }) {	1358	# unless (%{ $frame->[FR_STATE] }) {
1127	# delete $self->{state};	1359	# delete $self->{state};
1128	# delete $self->{expr};	1360	# delete $self->{expr};
1129	# }	1361	# }
1130		1362
1131	# set background pixmap	1363	# set background pixmap
1132		1364
1133	$self->set_background ($img, $self->{border});	1365	$self->set_background ($img, $self->{border});
		1366	} else {
		1367	$self->clr_background;
		1368	}
		1369
1134	$self->scr_recolour (0);	1370	$self->scr_recolor (0);
1135	$self->want_refresh;	1371	$self->want_refresh;
1136	}	1372	}
1137		1373
		1374	sub old_bg_opts {
		1375	my ($self, $arg) = @_;
		1376
		1377	$arg or return;
		1378
		1379	my @str = split /;/, $arg;
		1380
		1381	return unless $str[0] or $self->{bg_opts}->{path};
		1382
		1383	my $bg_opts = $self->{bg_opts};
		1384
		1385	if ($str[0]) {
		1386	$bg_opts->{tile} = 0;
		1387	$bg_opts->{keep_aspect} = 0;
		1388	$bg_opts->{root_align} = 0;
		1389	$bg_opts->{h_scale} = $bg_opts->{v_scale} = 100;
		1390	$bg_opts->{h_align} = $bg_opts->{v_align} = 50;
		1391	$bg_opts->{path} = $str[0];
		1392	}
		1393
		1394	my @oplist = split /:/, $str[1];
		1395
		1396	for (@oplist) {
		1397	if (/style=tiled/i) {
		1398	$bg_opts->{tile} = 1;
		1399	$bg_opts->{keep_aspect} = 0;
		1400	$bg_opts->{root_align} = 0;
		1401	$bg_opts->{h_scale} = $bg_opts->{v_scale} = 0;
		1402	$bg_opts->{h_align} = $bg_opts->{v_align} = 0;
		1403	} elsif (/style=aspect-stretched/i) {
		1404	$bg_opts->{tile} = 0;
		1405	$bg_opts->{keep_aspect} = 1;
		1406	$bg_opts->{root_align} = 0;
		1407	$bg_opts->{h_scale} = $bg_opts->{v_scale} = 100;
		1408	$bg_opts->{h_align} = $bg_opts->{v_align} = 50;
		1409	} elsif (/style=stretched/i) {
		1410	$bg_opts->{tile} = 0;
		1411	$bg_opts->{keep_aspect} = 0;
		1412	$bg_opts->{root_align} = 0;
		1413	$bg_opts->{h_scale} = $bg_opts->{v_scale} = 100;
		1414	$bg_opts->{h_align} = $bg_opts->{v_align} = 50;
		1415	} elsif (/style=centered/i) {
		1416	$bg_opts->{tile} = 0;
		1417	$bg_opts->{keep_aspect} = 0;
		1418	$bg_opts->{root_align} = 0;
		1419	$bg_opts->{h_scale} = $bg_opts->{v_scale} = 0;
		1420	$bg_opts->{h_align} = $bg_opts->{v_align} = 50;
		1421	} elsif (/style=root-tiled/i) {
		1422	$bg_opts->{tile} = 1;
		1423	$bg_opts->{keep_aspect} = 0;
		1424	$bg_opts->{root_align} = 1;
		1425	$bg_opts->{h_scale} = $bg_opts->{v_scale} = 0;
		1426	$bg_opts->{h_align} = $bg_opts->{v_align} = 0;
		1427	} elsif (/op=tile/i) {
		1428	$bg_opts->{tile} = 1;
		1429	} elsif (/op=keep-aspect/i) {
		1430	$bg_opts->{keep_aspect} = 1;
		1431	} elsif (/op=root-align/i) {
		1432	$bg_opts->{root_align} = 1;
		1433	} elsif (/^ =? ([0-9]+)? (?:[xX] ([0-9]+))? ([+-][0-9]+)? ([+-][0-9]+)? $/x) {
		1434	my ($w, $h, $x, $y) = ($1, $2, $3, $4);
		1435
		1436	if ($str[0]) {
		1437	$w = $h unless defined $w;
		1438	$h = $w unless defined $h;
		1439	$y = $x unless defined $y;
		1440	}
		1441
		1442	$bg_opts->{h_scale} = $w if defined $w;
		1443	$bg_opts->{v_scale} = $h if defined $h;
		1444	$bg_opts->{h_align} = $x if defined $x;
		1445	$bg_opts->{v_align} = $y if defined $y;
		1446	}
		1447	}
		1448	}
		1449
		1450	# helper function, quote string as perl without allowing
		1451	# any code execution or other shenanigans. does not
		1452	# support binary NULs in string.
		1453	sub q0 {
		1454	(my $str = shift) =~ s/\x00//g; # make sure there really aren't any embedded NULs
		1455	"q\x00$str\x00"
		1456	}
		1457
		1458	sub old_bg_expr {
		1459	my ($self) = @_;
		1460
		1461	my $expr;
		1462
		1463	my $bg_opts = $self->{bg_opts};
		1464
		1465	if ($bg_opts->{root} =~ /^\s(?:true\|yes\|on\|1)\s$/i) {
		1466	$expr .= "tile (";
		1467
		1468	my $shade = $bg_opts->{shade};
		1469
		1470	if ($shade) {
		1471	$shade = List::Util::min $shade, 200;
		1472	$shade = List::Util::max $shade, -100;
		1473	$shade = 200 - (100 + $shade) if $shade < 0;
		1474
		1475	$shade = $shade * 0.01 - 1;
		1476	$expr .= "shade $shade, ";
		1477	}
		1478
		1479	my $tint = $bg_opts->{tint};
		1480
		1481	if ($tint) {
		1482	$tint = q0 $tint;
		1483	$expr .= "tint $tint,";
		1484	}
		1485
		1486	my $blur = $bg_opts->{blur};
		1487
		1488	if ($blur and $blur =~ /^ =? ([0-9]+)? (?:[xX] ([0-9]+))? $/x) {
		1489	my $hr = defined $1 ? $1 : 1;
		1490	my $vr = defined $2 ? $2 : $hr;
		1491
		1492	if ($hr != 0 and $vr != 0) {
		1493	$expr .= "blur $hr, $vr, ";
		1494	}
		1495	}
		1496
		1497	$expr .= "rootalign root)";
		1498	}
		1499
		1500	if ($bg_opts->{path}) {
		1501	my $file_expr;
		1502	my $h_scale = $bg_opts->{h_scale} * 0.01;
		1503	my $v_scale = $bg_opts->{v_scale} * 0.01;
		1504	my $h_align = $bg_opts->{h_align} * 0.01;
		1505	my $v_align = $bg_opts->{v_align} * 0.01;
		1506
		1507	if (!$bg_opts->{tile}) {
		1508	$file_expr .= "pad (";
		1509	} else {
		1510	$file_expr .= "tile (";
		1511	}
		1512
		1513	if ($bg_opts->{root_align}) {
		1514	$file_expr .= "rootalign ";
		1515	} else {
		1516	$file_expr .= "align $h_align, $v_align, ";
		1517	}
		1518
		1519	if ($h_scale != 0 and $v_scale != 0) {
		1520	my $op = $bg_opts->{keep_aspect} ? "fit" : "resize";
		1521	$file_expr .= "$op TW * $h_scale, TH * $v_scale, ";
		1522	}
		1523
		1524	my $path = q0 $bg_opts->{path};
		1525
		1526	$file_expr .= "keep { load $path })";
		1527
		1528	if ($expr) {
		1529	$expr .= ", tint (\"[50]white\", $file_expr)";
		1530	} else {
		1531	$expr = $file_expr;
		1532	}
		1533	}
		1534
		1535	$expr
		1536	}
		1537
		1538	sub on_osc_seq {
		1539	my ($self, $op, $arg) = @_;
		1540
		1541	$self->{bg_opts} or return;
		1542
		1543	$op =~ /^(?:20\|705)$/ or return;
		1544
		1545	if ($op eq "20") {
		1546	if ($arg eq "?") {
		1547	my $h_scale = $self->{bg_opts}->{h_scale};
		1548	my $v_scale = $self->{bg_opts}->{v_scale};
		1549	my $h_align = $self->{bg_opts}->{h_align};
		1550	my $v_align = $self->{bg_opts}->{v_align};
		1551	$self->cmd_parse ("\033]2;[${h_scale}x${v_scale}+${h_align}+${v_align}]\007");
		1552	} else {
		1553	$self->old_bg_opts ($arg);
		1554	my $expr = $self->old_bg_expr;
		1555	$self->set_expr (parse_expr $expr) if $expr;
		1556	}
		1557	} elsif ($op eq "705") {
		1558	$self->{bg_opts}->{tint} = $arg;
		1559	my $expr = $self->old_bg_expr;
		1560	$self->set_expr (parse_expr $expr) if $expr;
		1561	}
		1562
		1563	1
		1564	}
		1565
		1566	sub find_resource {
		1567	my ($self, $res, $opt) = @_;
		1568
		1569	my $v = $self->x_resource ($opt);
		1570	$v = $self->x_resource ($res) unless defined $v;
		1571
		1572	$v
		1573	}
		1574
1138	sub on_start {	1575	sub on_start {
1139	my ($self) = @_;	1576	my ($self) = @_;
1140		1577
1141	my $expr = $self->x_resource ("%.expr")	1578	my $expr = $self->x_resource ("%.expr");
1142	or return;
1143		1579
1144	$self->has_render	1580	if (!$expr) {
1145	or die "background extension needs RENDER extension 0.10 or higher, ignoring background-expr.\n";	1581	$self->{bg_opts} = { h_scale => 100, v_scale => 100,
		1582	h_align => 50, v_align => 50 };
		1583
		1584	$self->{bg_opts}{shade} = $self->find_resource ("shading", "sh");
		1585	$self->{bg_opts}{tint} = $self->find_resource ("tintColor", "tint");
		1586	$self->{bg_opts}{blur} = $self->find_resource ("blurRadius", "blr");
		1587	$self->{bg_opts}{root} = $self->find_resource ("transparent", "tr");
		1588
		1589	$self->old_bg_opts ($self->find_resource ("backgroundPixmap", "pixmap"));
		1590	$expr = $self->old_bg_expr;
		1591	}
1146		1592
1147	$self->set_expr (parse_expr $expr);	1593	$self->set_expr (parse_expr $expr);
1148	$self->{border} = $self->x_resource_boolean ("%.border");	1594	$self->{border} = $self->x_resource_boolean ("%.border");
1149		1595
1150	$MIN_INTERVAL = $self->x_resource ("%.interval");	1596	$MIN_INTERVAL = $self->x_resource ("%.interval");

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Comparing rxvt-unicode/src/perl/background (file contents): Revision 1.82 by sf-exg, Sat Jan 19 10:04:34 2013 UTC vs. Revision 1.100 by root, Sat Jul 24 09:48:43 2021 UTC

Diff Legend

Comparing rxvt-unicode/src/perl/background (file contents):
Revision 1.82 by sf-exg, Sat Jan 19 10:04:34 2013 UTC vs.
Revision 1.100 by root, Sat Jul 24 09:48:43 2021 UTC