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

Comparing rxvt-unicode/src/perl/background (file contents):
Revision 1.45 by root, Sun Jun 10 11:53:32 2012 UTC vs.
Revision 1.62 by root, Sun Jun 17 21:58:18 2012 UTC

…		…
1	#! perl	1	#! perl
2		2
3	#:META:X_RESOURCE:%.expr:string:background expression	3	#:META:X_RESOURCE:%.expr:string:background expression
4	#:META:X_RESOURCE:%.border.:boolean:respect the terminal border	4	#:META:X_RESOURCE:%.border:boolean:respect the terminal border
5		5	#:META:X_RESOURCE:%.interval:seconds:minimum time between updates
6	#TODO: once, rootalign
7		6
8	=head1 NAME	7	=head1 NAME
9		8
10	background - manage terminal background	9	background - manage terminal background
11		10
12	=head1 SYNOPSIS	11	=head1 SYNOPSIS
13		12
14	urxvt --background-expr 'background expression'	13	urxvt --background-expr 'background expression'
15	--background-border	14	--background-border
		15	--background-interval seconds
16		16
17	=head1 DESCRIPTION	17	=head1 DESCRIPTION
18		18
19	This extension manages the terminal background by creating a picture that	19	This extension manages the terminal background by creating a picture that
20	is behind the text, replacing the normal background colour.	20	is behind the text, replacing the normal background colour.
57		57
58	For example, an expression such as C<scale load "$HOME/mybg.png"> scales the	58	For example, an expression such as C<scale load "$HOME/mybg.png"> scales the
59	image to the window size, so it relies on the window size and will	59	image to the window size, so it relies on the window size and will
60	be reevaluated each time it is changed, but not when it moves for	60	be reevaluated each time it is changed, but not when it moves for
61	example. That ensures that the picture always fills the terminal, even	61	example. That ensures that the picture always fills the terminal, even
62	after it's size changes.	62	after its size changes.
63		63
64	=head2 EXPRESSIONS	64	=head2 EXPRESSIONS
65		65
66	Expressions are normal Perl expressions, in fact, they are Perl blocks -	66	Expressions are normal Perl expressions, in fact, they are Perl blocks -
67	which means you could use multiple lines and statements:	67	which means you could use multiple lines and statements:
…		…
71	return scale load "$HOME/weekday.png";	71	return scale load "$HOME/weekday.png";
72	} else {	72	} else {
73	return scale load "$HOME/sunday.png";	73	return scale load "$HOME/sunday.png";
74	}	74	}
75		75
76	This expression gets evaluated once per hour. It will set F<sunday.png> as	76	This expression is evaluated once per hour. It will set F<sunday.png> as
77	background on Sundays, and F<weekday.png> on all other days.	77	background on Sundays, and F<weekday.png> on all other days.
78		78
79	Fortunately, we expect that most expressions will be much simpler, with	79	Fortunately, we expect that most expressions will be much simpler, with
80	little Perl knowledge needed.	80	little Perl knowledge needed.
81		81
…		…
115	horizontal and vertical dimensions. For example, this halves the image	115	horizontal and vertical dimensions. For example, this halves the image
116	width and doubles the image height:	116	width and doubles the image height:
117		117
118	scale 0.5, 2, load "$HOME/mypic.png"	118	scale 0.5, 2, load "$HOME/mypic.png"
119		119
120	Other effects than scalign are also readily available, for exmaple, you can	120	Other effects than scaling are also readily available, for example, you can
121	tile the image to fill the whole window, instead of resizing it:	121	tile the image to fill the whole window, instead of resizing it:
122		122
123	tile load "$HOME/mypic.png"	123	tile load "$HOME/mypic.png"
124		124
125	In fact, images returned by C<load> are in C<tile> mode by default, so the C<tile> operator	125	In fact, images returned by C<load> are in C<tile> mode by default, so the C<tile> operator
…		…
151	This only works for one cycle though, so as long as you load the same	151	This only works for one cycle though, so as long as you load the same
152	image every time, it will always be cached, but when you load a different	152	image every time, it will always be cached, but when you load a different
153	image, it will forget about the first one.	153	image, it will forget about the first one.
154		154
155	This allows you to either speed things up by keeping multiple images in	155	This allows you to either speed things up by keeping multiple images in
156	memory, or comserve memory by loading images more often.	156	memory, or conserve memory by loading images more often.
157		157
158	For example, you can keep two images in memory and use a random one like	158	For example, you can keep two images in memory and use a random one like
159	this:	159	this:
160		160
161	my $img1 = load "img1.png";	161	my $img1 = load "img1.png";
…		…
189	overwriting borders and any other areas, such as the scrollbar.	189	overwriting borders and any other areas, such as the scrollbar.
190		190
191	Specifying this flag changes the behaviour, so that the image only	191	Specifying this flag changes the behaviour, so that the image only
192	replaces the background of the character area.	192	replaces the background of the character area.
193		193
		194	=item --background-interval seconds
		195
		196	Since some operations in the underlying XRender extension can effectively
		197	freeze your X-server for prolonged time, this extension enforces a minimum
		198	time between updates, which is normally about 0.1 seconds.
		199
		200	If you want to do updates more often, you can decrease this safety
		201	interval with this switch.
		202
194	=back	203	=back
195		204
196	=cut	205	=cut
197		206
		207	our %_IMG_CACHE;
198	our $HOME;	208	our $HOME;
199	our ($self, $old, $new);	209	our ($self, $old, $new);
200	our ($x, $y, $w, $h);	210	our ($x, $y, $w, $h);
201		211
202	# enforce at least this interval between updates	212	# enforce at least this interval between updates
203	our $MIN_INTERVAL = 1/100;	213	our $MIN_INTERVAL = 6/59.951;
204		214
205	{	215	{
206	package urxvt::bgdsl; # background language	216	package urxvt::bgdsl; # background language
207		217
208	use List::Util qw(min max sum shuffle);	218	use List::Util qw(min max sum shuffle);
…		…
218	=item load $path	228	=item load $path
219		229
220	Loads the image at the given C<$path>. The image is set to plane tiling	230	Loads the image at the given C<$path>. The image is set to plane tiling
221	mode.	231	mode.
222		232
223	Loaded images will be cached for one cycle.	233	Loaded images will be cached for one cycle, and shared between temrinals
		234	running in the same process (e.g. in C<urxvtd>).
224		235
		236	=item load_uc $path
		237
		238	Load uncached - same as load, but does not cache the image. This function
		239	is most useufl if you want to optimise a background expression in some
		240	way.
		241
225	=cut	242	=cut
		243
		244	sub load_uc($) {
		245	my ($path) = @_;
		246
		247	$_IMG_CACHE{$path} \|\| do {
		248	my $img = $self->new_img_from_file ($path);
		249	Scalar::Util::weaken ($_IMG_CACHE{$path} = $img);
		250	$img
		251	}
		252	}
226		253
227	sub load($) {	254	sub load($) {
228	my ($path) = @_;	255	my ($path) = @_;
229		256
230	$new->{load}{$path} = $old->{load}{$path} \|\| $self->new_img_from_file ($path);	257	$new->{load}{$path} = $old->{load}{$path} \|\| load_uc $path;
231	}	258	}
232		259
233	=item root	260	=item root
234		261
235	Returns the root window pixmap, that is, hopefully, the background image	262	Returns the root window pixmap, that is, hopefully, the background image
236	of your screen. The image is set to extend mode.	263	of your screen.
237		264
238	This function makes your expression root sensitive, that means it will be	265	This function makes your expression root sensitive, that means it will be
239	reevaluated when the bg image changes.	266	reevaluated when the bg image changes.
240		267
241	=cut	268	=cut
242		269
243	sub root() {	270	sub root() {
244	$new->{rootpmap_sensitive} = 1;	271	$new->{again}{rootpmap} = 1;
245	die "root op not supported, exg, we need you";	272	$self->new_img_from_root
246	}	273	}
247		274
248	=item solid $colour	275	=item solid $colour
249		276
250	=item solid $width, $height, $colour	277	=item solid $width, $height, $colour
…		…
258	=cut	285	=cut
259		286
260	sub solid($;$$) {	287	sub solid($;$$) {
261	my $colour = pop;	288	my $colour = pop;
262		289
263	my $img = $self->new_img (urxvt::PictStandardARGB32, $_[0] \|\| 1, $_[1] \|\| 1);	290	my $img = $self->new_img (urxvt::PictStandardARGB32, 0, 0, $_[0] \|\| 1, $_[1] \|\| 1);
264	$img->fill ($colour);	291	$img->fill ($colour);
265	$img	292	$img
266	}	293	}
267		294
268	=item clone $img	295	=item clone $img
…		…
274		301
275	sub clone($) {	302	sub clone($) {
276	$_[0]->clone	303	$_[0]->clone
277	}	304	}
278		305
279	=back	306	=item merge $img ...
		307
		308	Takes any number of images and merges them together, creating a single
		309	image containing them all. The tiling mode of the first image is used as
		310	the tiling mdoe of the resulting image.
		311
		312	This function is called automatically when an expression returns multiple
		313	images.
		314
		315	=cut
		316
		317	sub merge(@) {
		318	return $_[0] unless $#_;
		319
		320	# rather annoyingly clumsy, but optimisation is for another time
		321
		322	my $x0 = +1e9;
		323	my $y0 = +1e9;
		324	my $x1 = -1e9;
		325	my $y1 = -1e9;
		326
		327	for (@_) {
		328	my ($x, $y, $w, $h) = $_->geometry;
		329
		330	$x0 = $x if $x0 > $x;
		331	$y0 = $y if $y0 > $y;
		332
		333	$x += $w;
		334	$y += $h;
		335
		336	$x1 = $x if $x1 < $x;
		337	$y1 = $y if $y1 < $y;
		338	}
		339
		340	my $base = $self->new_img (urxvt::PictStandardARGB32, $x0, $y0, $x1 - $x0, $y1 - $y0);
		341	$base->repeat_mode ($_[0]->repeat_mode);
		342	$base->fill ([0, 0, 0, 0]);
		343
		344	$base->draw ($_)
		345	for @_;
		346
		347	$base
		348	}
280		349
281	=head2 TILING MODES	350	=head2 TILING MODES
282		351
283	The following operators modify the tiling mode of an image, that is, the	352	The following operators modify the tiling mode of an image, that is, the
284	way that pixels outside the image area are painted when the image is used.	353	way that pixels outside the image area are painted when the image is used.
…		…
314	become transparent. This mode is most useful when you want to place an	383	become transparent. This mode is most useful when you want to place an
315	image over another image or the background colour while leaving all	384	image over another image or the background colour while leaving all
316	background pixels outside the image unchanged.	385	background pixels outside the image unchanged.
317		386
318	Example: load an image and display it in the upper left corner. The rest	387	Example: load an image and display it in the upper left corner. The rest
319	of the space is left "empty" (transparent or wahtever your compisotr does	388	of the space is left "empty" (transparent or whatever your compositor does
320	in alpha mode, else background colour).	389	in alpha mode, else background colour).
321		390
322	pad load "mybg.png"	391	pad load "mybg.png"
323		392
324	=item extend $img	393	=item extend $img
325		394
326	Extends the image over the whole plane, using the closest pixel in the	395	Extends the image over the whole plane, using the closest pixel in the
327	area outside the image. This mode is mostly useful when you more complex	396	area outside the image. This mode is mostly useful when you use more complex
328	filtering operations and want the pixels outside the image to have the	397	filtering operations and want the pixels outside the image to have the
329	same values as the pixels near the edge.	398	same values as the pixels near the edge.
330		399
331	Example: just for curiosity, how does this pixel extension stuff work?	400	Example: just for curiosity, how does this pixel extension stuff work?
332		401
…		…
399	the window size to conserve memory.	468	the window size to conserve memory.
400		469
401	Example: take the screen background, clip it to the window size, blur it a	470	Example: take the screen background, clip it to the window size, blur it a
402	bit, align it to the window position and use it as background.	471	bit, align it to the window position and use it as background.
403		472
404	clip move -TX, -TY, blur 5, root	473	clip move -TX, -TY, once { blur 5, root }
405		474
406	=cut	475	=cut
407		476
408	sub TX() { $new->{position_sensitive} = 1; $x }	477	sub TX() { $new->{again}{position} = 1; $x }
409	sub TY() { $new->{position_sensitive} = 1; $y }	478	sub TY() { $new->{again}{position} = 1; $y }
410	sub TW() { $new->{size_sensitive} = 1; $w }	479	sub TW() { $new->{again}{size} = 1; $w }
411	sub TH() { $new->{size_sensitive} = 1; $h }	480	sub TH() { $new->{again}{size} = 1; $h }
412		481
413	=item now	482	=item now
414		483
415	Returns the current time as (fractional) seconds since the epoch.	484	Returns the current time as (fractional) seconds since the epoch.
416		485
…		…
423	C<$seconds> seconds.	492	C<$seconds> seconds.
424		493
425	Example: load some image and rotate it according to the time of day (as if it were	494	Example: load some image and rotate it according to the time of day (as if it were
426	the hour pointer of a clock). Update this image every minute.	495	the hour pointer of a clock). Update this image every minute.
427		496
428	again 60; rotate TW, TH, 50, 50, (now % 86400) * -720 / 86400, scale load "myclock.png"	497	again 60; rotate 50, 50, (now % 86400) * -720 / 86400, scale load "myclock.png"
429		498
430	=item counter $seconds	499	=item counter $seconds
431		500
432	Like C<again>, but also returns an increasing counter value, starting at	501	Like C<again>, but also returns an increasing counter value, starting at
433	0, which might be useful for some simple animation effects.	502	0, which might be useful for some simple animation effects.
…		…
435	=cut	504	=cut
436		505
437	sub now() { urxvt::NOW }	506	sub now() { urxvt::NOW }
438		507
439	sub again($) {	508	sub again($) {
440	$new->{again} = $_[0];	509	$new->{again}{time} = $_[0];
441	}	510	}
442		511
443	sub counter($) {	512	sub counter($) {
444	$new->{again} = $_[0];	513	$new->{again}{time} = $_[0];
445	$self->{counter} + 0	514	$self->{counter} + 0
446	}	515	}
447		516
448	=back	517	=back
449		518
…		…
553		622
554	Example: move the image right by 20 pixels and down by 30.	623	Example: move the image right by 20 pixels and down by 30.
555		624
556	move 20, 30, ...	625	move 20, 30, ...
557		626
		627	=item align $xalign, $yalign, $img
		628
		629	Aligns the image according to a factor - C<0> means the image is moved to
		630	the left or top edge (for C<$xalign> or C<$yalign>), C<0.5> means it is
		631	exactly centered and C<1> means it touches the right or bottom edge.
		632
		633	Example: remove any visible border around an image, center it vertically but move
		634	it to the right hand side.
		635
		636	align 1, 0.5, pad $img
		637
558	=item center $img	638	=item center $img
559		639
560	=item center $width, $height, $img	640	=item center $width, $height, $img
561		641
562	Centers the image, i.e. the center of the image is moved to the center of	642	Centers the image, i.e. the center of the image is moved to the center of
563	the terminal window (or the box specified by C<$width> and C<$height> if	643	the terminal window (or the box specified by C<$width> and C<$height> if
564	given).	644	given).
		645
		646	Example: load an image and center it.
		647
		648	center pad load "mybg.png"
565		649
566	=item rootalign $img	650	=item rootalign $img
567		651
568	Moves the image so that it appears glued to the screen as opposed to the	652	Moves the image so that it appears glued to the screen as opposed to the
569	window. This gives the illusion of a larger area behind the window. It is	653	window. This gives the illusion of a larger area behind the window. It is
…		…
575	rootalign mirror load "mybg.png"	659	rootalign mirror load "mybg.png"
576		660
577	Example: take the screen background and align it, giving the illusion of	661	Example: take the screen background and align it, giving the illusion of
578	transparency as long as the window isn't in front of other windows.	662	transparency as long as the window isn't in front of other windows.
579		663
580	rootalign root	664	rootalign root
581		665
582	=cut	666	=cut
583		667
584	sub move($$;$) {	668	sub move($$;$) {
585	my $img = pop->clone;	669	my $img = pop->clone;
586	$img->move ($_[0], $_[1]);	670	$img->move ($_[0], $_[1]);
587	$img	671	$img
588	}	672	}
589		673
		674	sub align($;$$) {
		675	my $img = pop;
		676
		677	move $_[0] * (TW - $img->w),
		678	$_[1] * (TH - $img->h),
		679	$img
		680	}
		681
590	sub center($;$$) {	682	sub center($;$$) {
591	my $img = pop;	683	my $img = pop;
592	my $w = $_[0] \|\| TW;	684	my $w = $_[0] \|\| TW;
593	my $h = $_[0] \|\| TH;	685	my $h = $_[1] \|\| TH;
594		686
595	move 0.5 * ($w - $img->w), 0.5 * ($h - $img->h), $img	687	move 0.5 * ($w - $img->w), 0.5 * ($h - $img->h), $img
596	}	688	}
597		689
598	sub rootalign($) {	690	sub rootalign($) {
599	move -TX, -TY, $_[0]	691	move -TX, -TY, $_[0]
		692	}
		693
		694	=item rotate $center_x, $center_y, $degrees
		695
		696	Rotates the image by C<$degrees> degrees, counter-clockwise, around the
		697	pointer at C<$center_x> and C<$center_y> (specified as factor of image
		698	width/height).
		699
		700	#TODO# new width, height, maybe more operators?
		701
		702	Example: rotate the image by 90 degrees
		703
		704	=cut
		705
		706	sub rotate($$$$) {
		707	my $img = pop;
		708	$img->rotate (
		709	$_[0] * ($img->w + $img->x),
		710	$_[1] * ($img->h + $img->y),
		711	$_[2] * (3.14159265 / 180),
		712	)
600	}	713	}
601		714
602	=back	715	=back
603		716
604	=head2 COLOUR MODIFICATIONS	717	=head2 COLOUR MODIFICATIONS
…		…
640		753
641	Values less than 0 reduce brightness, while values larger than 0 increase	754	Values less than 0 reduce brightness, while values larger than 0 increase
642	it. Useful range is from -1 to 1 - the former results in a black, the	755	it. Useful range is from -1 to 1 - the former results in a black, the
643	latter in a white picture.	756	latter in a white picture.
644		757
645	Due to idiosynchrasies in the underlying XRender extension, biases less	758	Due to idiosyncrasies in the underlying XRender extension, biases less
646	than zero can be I<very> slow.	759	than zero can be I<very> slow.
647		760
648	=cut	761	=cut
649		762
650	sub contrast($$;$$;$) {	763	sub contrast($$;$$;$) {
651	my $img = pop;	764	my $img = pop;
652	my ($r, $g, $b, $a) = @_;	765	my ($r, $g, $b, $a) = @_;
653		766
654	($g, $b) = ($r, $r) if @_ < 4;	767	($g, $b) = ($r, $r) if @_ < 3;
655	$a = 1 if @_ < 5;	768	$a = 1 if @_ < 4;
656		769
657	$img = $img->clone;	770	$img = $img->clone;
658	$img->contrast ($r, $g, $b, $a);	771	$img->contrast ($r, $g, $b, $a);
659	$img	772	$img
660	}	773	}
661		774
662	sub brightness($$;$$;$) {	775	sub brightness($$;$$;$) {
663	my $img = pop;	776	my $img = pop;
664	my ($r, $g, $b, $a) = @_;	777	my ($r, $g, $b, $a) = @_;
665		778
666	($g, $b) = ($r, $r) if @_ < 4;	779	($g, $b) = ($r, $r) if @_ < 3;
667	$a = 1 if @_ < 5;	780	$a = 1 if @_ < 4;
668		781
669	$img = $img->clone;	782	$img = $img->clone;
670	$img->brightness ($r, $g, $b, $a);	783	$img->brightness ($r, $g, $b, $a);
671	$img	784	$img
672	}	785	}
…		…
688	sub blur($$;$) {	801	sub blur($$;$) {
689	my $img = pop;	802	my $img = pop;
690	$img->blur ($_[0], @_ >= 2 ? $_[1] : $_[0])	803	$img->blur ($_[0], @_ >= 2 ? $_[1] : $_[0])
691	}	804	}
692		805
693	=item rotate $new_width, $new_height, $center_x, $center_y, $degrees	806	=back
694		807
695	Rotates the image by C<$degrees> degrees, counter-clockwise, around the	808	=head2 OTHER STUFF
696	pointer at C<$center_x> and C<$center_y> (specified as factor of image
697	width/height), generating a new image with width C<$new_width> and height
698	C<$new_height>.
699		809
700	#TODO# new width, height, maybe more operators?	810	Anything that didn't fit any of the other categories, even after applying
		811	force and closing our eyes.
701		812
702	Example: rotate the image by 90 degrees	813	=over 4
703		814
704	=cut	815	=item once { ... }
705		816
706	sub rotate($$$$$$) {	817	This function takes a code block as argument, that is, one or more
707	my $img = pop;	818	statements enclosed by braces.
708	$img->rotate (	819
709	$_[0],	820	The trick is that this code block is only evaluated once - future calls
710	$_[1],	821	will simply return the original image (yes, it should only be used with
711	$_[2] * $img->w,	822	images).
712	$_[3] * $img->h,	823
713	$_[4] * (3.14159265 / 180),	824	This can be extremely useful to avoid redoign the same slow operations
		825	again and again- for example, if your background expression takes the root
		826	background, blurs it and then root-aligns it it would have to blur the
		827	root background on every window move or resize.
		828
		829	Putting the blur into a C<once> block will make sure the blur is only done
		830	once:
		831
		832	rootlign once { blur 10, root }
		833
		834	This leaves the question of how to force reevaluation of the block, in
		835	case the root background changes: Right now, all once blocks forget that
		836	they ahve been executed before each time the root background changes (if
		837	the expression is sensitive to that) or when C<once_again> is called.
		838
		839	=item once_again
		840
		841	Resets all C<once> block as if they had never been called, i.e. on the
		842	next call they will be reevaluated again.
		843
		844	=cut
		845
		846	sub once(&) {
		847	my $once = $self->{once_cache}{$_[0]+0} \|\|= do {
		848	local $new->{again};
		849	my @res = $_[0]();
		850	[$new->{again}, \@res]
714	)	851	};
		852
		853	$new->{again} = {
		854	%{ $new->{again} },
		855	%{ $once->[0] }
		856	};
		857
		858	# in scalar context we always return the first original result, which
		859	# is not quite how perl works.
		860	wantarray
		861	? @{ $once->[1] }
		862	: $once->[1][0]
		863	}
		864
		865	sub once_again() {
		866	delete $self->{once_cache};
715	}	867	}
716		868
717	=back	869	=back
718		870
719	=cut	871	=cut
…		…
760	($x, $y, $w, $h) =	912	($x, $y, $w, $h) =
761	$self->background_geometry ($self->{border});	913	$self->background_geometry ($self->{border});
762		914
763	# evaluate user expression	915	# evaluate user expression
764		916
765	my $img = eval { $self->{expr}->() };	917	my $img = eval { urxvt::bgdsl::merge $self->{expr}->() };
766	warn $@ if $@;#d#	918	die $@ if $@;
767	die if !UNIVERSAL::isa $img, "urxvt::img";	919	die "background-expr did not return an image.\n" if !UNIVERSAL::isa $img, "urxvt::img";
768		920
769	$state->{size_sensitive} = 1	921	# if the expression is sensitive to external events, prepare reevaluation then
		922
		923	my $again = delete $state->{again};
		924
		925	$again->{size} = 1
770	if $img->repeat_mode != urxvt::RepeatNormal;	926	if $img->repeat_mode != urxvt::RepeatNormal;
771		927
772	# if the expression is sensitive to external events, prepare reevaluation then
773
774	my $repeat;
775
776	if (my $again = $state->{again}) {	928	if (my $again = $again->{time}) {
777	$repeat = 1;
778	my $self = $self;	929	my $self = $self;
779	$state->{timer} = $again == $old->{again}	930	$state->{timer} = $again == $old->{again}
780	? $old->{timer}	931	? $old->{timer}
781	: urxvt::timer->new->after ($again)->interval ($again)->cb (sub {	932	: urxvt::timer->new->after ($again)->interval ($again)->cb (sub {
782	++$self->{counter};	933	++$self->{counter};
783	$self->recalculate	934	$self->recalculate
784	});	935	});
785	}	936	}
786		937
787	if (delete $state->{position_sensitive}) {	938	if ($again->{position}) {
788	$repeat = 1;
789	$self->enable (position_change => sub { $_[0]->recalculate });	939	$self->enable (position_change => sub { $_[0]->recalculate });
790	} else {	940	} else {
791	$self->disable ("position_change");	941	$self->disable ("position_change");
792	}	942	}
793		943
794	if (delete $state->{size_sensitive}) {	944	if ($again->{size}) {
795	$repeat = 1;
796	$self->enable (size_change => sub { $_[0]->recalculate });	945	$self->enable (size_change => sub { $_[0]->recalculate });
797	} else {	946	} else {
798	$self->disable ("size_change");	947	$self->disable ("size_change");
799	}	948	}
800		949
801	if (delete $state->{rootpmap_sensitive}) {	950	if ($again->{rootpmap}) {
802	$repeat = 1;
803	$self->enable (rootpmap_change => sub { $_[0]->recalculate });	951	$self->enable (rootpmap_change => sub {
		952	delete $_[0]{once_cache}; # this will override once-block values from
		953	$_[0]->recalculate;
		954	});
804	} else {	955	} else {
805	$self->disable ("rootpmap_change");	956	$self->disable ("rootpmap_change");
806	}	957	}
807		958
808	# clear stuff we no longer need	959	# clear stuff we no longer need
809		960
810	%$old = ();	961	%$old = ();
811		962
812	unless ($repeat) {	963	unless (%$again) {
813	delete $self->{state};	964	delete $self->{state};
814	delete $self->{expr};	965	delete $self->{expr};
815	}	966	}
816		967
817	# set background pixmap	968	# set background pixmap
…		…
822	}	973	}
823		974
824	sub on_start {	975	sub on_start {
825	my ($self) = @_;	976	my ($self) = @_;
826		977
827	my $expr = $self->x_resource ("background.expr")	978	my $expr = $self->x_resource ("%.expr")
828	or return;	979	or return;
829		980
		981	$self->has_render
		982	or die "background extension needs RENDER extension 0.10 or higher, ignoring background-expr.\n";
		983
830	$self->set_expr (parse_expr $expr);	984	$self->set_expr (parse_expr $expr);
831	$self->{border} = $self->x_resource_boolean ("background.border");	985	$self->{border} = $self->x_resource_boolean ("%.border");
		986
		987	$MIN_INTERVAL = $self->x_resource ("%.interval");
832		988
833	()	989	()
834	}	990	}
835		991

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Comparing rxvt-unicode/src/perl/background (file contents): Revision 1.45 by root, Sun Jun 10 11:53:32 2012 UTC vs. Revision 1.62 by root, Sun Jun 17 21:58:18 2012 UTC

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Comparing rxvt-unicode/src/perl/background (file contents):
Revision 1.45 by root, Sun Jun 10 11:53:32 2012 UTC vs.
Revision 1.62 by root, Sun Jun 17 21:58:18 2012 UTC