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Revision 1.10 by root, Mon Jan 2 20:47:52 2006 UTC vs.
Revision 1.144 by root, Mon Aug 7 15:59:44 2006 UTC

		1	=encoding utf8
		2
1	=head1 NAME	3	=head1 NAME
2		4
3	rxvtperl - rxvt-unicode's embedded perl interpreter	5	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter
4		6
5	=head1 SYNOPSIS	7	=head1 SYNOPSIS
6		8
7	# create a file grab_test in $HOME:	9	# create a file grab_test in $HOME:
8		10
…		…
15		17
16	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test	18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
17		19
18	=head1 DESCRIPTION	20	=head1 DESCRIPTION
19		21
20	Everytime a terminal object gets created, scripts specified via the	22	Every time a terminal object gets created, extension scripts specified via
21	C<perl> resource are loaded and associated with it.	23	the C<perl> resource are loaded and associated with it.
22		24
23	Scripts are compiled in a 'use strict' and 'use utf8' environment, and	25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
24	thus must be encoded as UTF-8.	26	thus must be encoded as UTF-8.
25		27
26	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where	28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
27	scripts will be shared (But not enabled) for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
		30
		31	=head1 PREPACKAGED EXTENSIONS
		32
		33	This section describes the extensions delivered with this release. You can
		34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
		35
		36	You can activate them like this:
		37
		38	@@RXVT_NAME@@ -pe <extensionname>
		39
		40	Or by adding them to the resource for extensions loaded by default:
		41
		42	URxvt.perl-ext-common: default,automove-background,selection-autotransform
		43
		44	=over 4
		45
		46	=item selection (enabled by default)
		47
		48	(More) intelligent selection. This extension tries to be more intelligent
		49	when the user extends selections (double-click and further clicks). Right
		50	now, it tries to select words, urls and complete shell-quoted
		51	arguments, which is very convenient, too, if your F<ls> supports
		52	C<--quoting-style=shell>.
		53
		54	A double-click usually selects the word under the cursor, further clicks
		55	will enlarge the selection.
		56
		57	The selection works by trying to match a number of regexes and displaying
		58	them in increasing order of length. You can add your own regexes by
		59	specifying resources of the form:
		60
		61	URxvt.selection.pattern-0: perl-regex
		62	URxvt.selection.pattern-1: perl-regex
		63	...
		64
		65	The index number (0, 1...) must not have any holes, and each regex must
		66	contain at least one pair of capturing parentheses, which will be used for
		67	the match. For example, the following adds a regex that matches everything
		68	between two vertical bars:
		69
		70	URxvt.selection.pattern-0: \\|([^|]+)\\|
		71
		72	Another example: Programs I use often output "absolute path: " at the
		73	beginning of a line when they process multiple files. The following
		74	pattern matches the filename (note, there is a single space at the very
		75	end):
		76
		77	URxvt.selection.pattern-0: ^(/[^:]+):\
		78
		79	You can look at the source of the selection extension to see more
		80	interesting uses, such as parsing a line from beginning to end.
		81
		82	This extension also offers following bindable keyboard commands:
		83
		84	=over 4
		85
		86	=item rot13
		87
		88	Rot-13 the selection when activated. Used via keyboard trigger:
		89
		90	URxvt.keysym.C-M-r: perl:selection:rot13
		91
		92	=back
		93
		94	=item option-popup (enabled by default)
		95
		96	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		97	runtime.
		98
		99	Other extensions can extend this popup menu by pushing a code reference
		100	onto C<@{ $term->{option_popup_hook} }>, which gets called whenever the
		101	popup is being displayed.
		102
		103	It's sole argument is the popup menu, which can be modified. It should
		104	either return nothing or a string, the initial boolean value and a code
		105	reference. The string will be used as button text and the code reference
		106	will be called when the toggle changes, with the new boolean value as
		107	first argument.
		108
		109	The following will add an entry C<myoption> that changes
		110	C<$self->{myoption}>:
		111
		112	push @{ $self->{term}{option_popup_hook} }, sub {
		113	("my option" => $myoption, sub { $self->{myoption} = $_[0] })
		114	};
		115
		116	=item selection-popup (enabled by default)
		117
		118	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		119	text into various other formats/action (such as uri unescaping, perl
		120	evaluation, web-browser starting etc.), depending on content.
		121
		122	Other extensions can extend this popup menu by pushing a code reference
		123	onto C<@{ $term->{selection_popup_hook} }>, which gets called whenever the
		124	popup is being displayed.
		125
		126	It's sole argument is the popup menu, which can be modified. The selection
		127	is in C<$_>, which can be used to decide whether to add something or not.
		128	It should either return nothing or a string and a code reference. The
		129	string will be used as button text and the code reference will be called
		130	when the button gets activated and should transform C<$_>.
		131
		132	The following will add an entry C<a to b> that transforms all C<a>s in
		133	the selection to C<b>s, but only if the selection currently contains any
		134	C<a>s:
		135
		136	push @{ $self->{term}{selection_popup_hook} }, sub {
		137	/a/ ? ("a to be" => sub { s/a/b/g }
		138	: ()
		139	};
		140
		141	=item searchable-scrollback<hotkey> (enabled by default)
		142
		143	Adds regex search functionality to the scrollback buffer, triggered
		144	by a hotkey (default: C<M-s>). While in search mode, normal terminal
		145	input/output is suspended and a regex is displayed at the bottom of the
		146	screen.
		147
		148	Inputting characters appends them to the regex and continues incremental
		149	search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
		150	search upwards/downwards in the scrollback buffer, C<End> jumps to the
		151	bottom. C<Escape> leaves search mode and returns to the point where search
		152	was started, while C<Enter> or C<Return> stay at the current position and
		153	additionally stores the first match in the current line into the primary
		154	selection.
		155
		156	The regex defaults to "(?i)", resulting in a case-insensitive search. To
		157	get a case-sensitive search you can delete this prefix using C<BackSpace>
		158	or simply use an uppercase character which removes the "(?i)" prefix.
		159
		160	See L<perlre> for more info about perl regular expression syntax.
		161
		162	=item readline (enabled by default)
		163
		164	A support package that tries to make editing with readline easier. At
		165	the moment, it reacts to clicking shift-left mouse button by trying to
		166	move the text cursor to this position. It does so by generating as many
		167	cursor-left or cursor-right keypresses as required (the this only works
		168	for programs that correctly support wide characters).
		169
		170	To avoid too many false positives, this is only done when:
		171
		172	=over 4
		173
		174	=item - the tty is in ICANON state.
		175
		176	=item - the text cursor is visible.
		177
		178	=item - the primary screen is currently being displayed.
		179
		180	=item - the mouse is on the same (multi-row-) line as the text cursor.
		181
		182	=back
		183
		184	The normal selection mechanism isn't disabled, so quick successive clicks
		185	might interfere with selection creation in harmless ways.
		186
		187	=item selection-autotransform
		188
		189	This selection allows you to do automatic transforms on a selection
		190	whenever a selection is made.
		191
		192	It works by specifying perl snippets (most useful is a single C<s///>
		193	operator) that modify C<$_> as resources:
		194
		195	URxvt.selection-autotransform.0: transform
		196	URxvt.selection-autotransform.1: transform
		197	...
		198
		199	For example, the following will transform selections of the form
		200	C<filename:number>, often seen in compiler messages, into C<vi +$filename
		201	$word>:
		202
		203	URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/
		204
		205	And this example matches the same,but replaces it with vi-commands you can
		206	paste directly into your (vi :) editor:
		207
		208	URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/
		209
		210	Of course, this can be modified to suit your needs and your editor :)
		211
		212	To expand the example above to typical perl error messages ("XXX at
		213	FILENAME line YYY."), you need a slightly more elaborate solution:
		214
		215	URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
		216	URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/
		217
		218	The first line tells the selection code to treat the unchanging part of
		219	every error message as a selection pattern, and the second line transforms
		220	the message into vi commands to load the file.
		221
		222	=item tabbed
		223
		224	This transforms the terminal into a tabbar with additional terminals, that
		225	is, it implements what is commonly referred to as "tabbed terminal". The topmost line
		226	displays a "[NEW]" button, which, when clicked, will add a new tab, followed by one
		227	button per tab.
		228
		229	Clicking a button will activate that tab. Pressing B<Shift-Left> and
		230	B<Shift-Right> will switch to the tab left or right of the current one,
		231	while B<Shift-Down> creates a new tab.
		232
		233	The tabbar itself can be configured similarly to a normal terminal, but
		234	with a resource class of C<URxvt.tabbed>. In addition, it supports the
		235	following four resources (shown with defaults):
		236
		237	URxvt.tabbed.tabbar-fg: <colour-index, default 3>
		238	URxvt.tabbed.tabbar-bg: <colour-index, default 0>
		239	URxvt.tabbed.tab-fg: <colour-index, default 0>
		240	URxvt.tabbed.tab-bg: <colour-index, default 1>
		241
		242	See I<COLOR AND GRAPHICS> in the @@RXVT_NAME@@(1) manpage for valid
		243	indices.
		244
		245	=item mark-urls
		246
		247	Uses per-line display filtering (C<on_line_update>) to underline urls and
		248	make them clickable. When middle-clicked, the program specified in the
		249	resource C<urlLauncher> (default C<x-www-browser>) will be started with
		250	the URL as first argument.
		251
		252	=item xim-onthespot
		253
		254	This (experimental) perl extension implements OnTheSpot editing. It does
		255	not work perfectly, and some input methods don't seem to work well with
		256	OnTheSpot editing in general, but it seems to work at leats for SCIM and
		257	kinput2.
		258
		259	You enable it by specifying this extension and a preedit style of
		260	C<OnTheSpot>, i.e.:
		261
		262	@@RXVT_NAME@@ -pt OnTheSpot -pe xim-onthespot
		263
		264	=item kuake<hotkey>
		265
		266	A very primitive quake-console-like extension. It was inspired by a
		267	description of how the programs C<kuake> and C<yakuake> work: Whenever the
		268	user presses a global accelerator key (by default C<F10>), the terminal
		269	will show or hide itself. Another press of the accelerator key will hide
		270	or show it again.
		271
		272	Initially, the window will not be shown when using this extension.
		273
		274	This is useful if you need a single terminal thats not using any desktop
		275	space most of the time but is quickly available at the press of a key.
		276
		277	The accelerator key is grabbed regardless of any modifiers, so this
		278	extension will actually grab a physical key just for this function.
		279
		280	If you want a quake-like animation, tell your window manager to do so
		281	(fvwm can do it).
		282
		283	=item automove-background
		284
		285	This is basically a very small extension that dynamically changes the
		286	background pixmap offset to the window position, in effect creating the
		287	same effect as pseudo transparency with a custom pixmap. No scaling is
		288	supported in this mode. Example:
		289
		290	@@RXVT_NAME@@ -pixmap background.xpm -pe automove-background
		291
		292	=item block-graphics-to-ascii
		293
		294	A not very useful example of filtering all text output to the terminal
		295	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		296	similar-looking ascii character.
		297
		298	=item digital-clock
		299
		300	Displays a digital clock using the built-in overlay.
		301
		302	=item remote-clipboard
		303
		304	Somewhat of a misnomer, this extension adds two menu entries to the
		305	selection popup that allows one ti run external commands to store the
		306	selection somewhere and fetch it again.
		307
		308	We use it to implement a "distributed selection mechanism", which just
		309	means that one command uploads the file to a remote server, and another
		310	reads it.
		311
		312	The commands can be set using the C<URxvt.remote-selection.store> and
		313	C<URxvt.remote-selection.fetch> resources. The first should read the
		314	selection to store from STDIN (always in UTF-8), the second should provide
		315	the selection data on STDOUT (also in UTF-8).
		316
		317	The defaults (which are likely useless to you) use rsh and cat:
		318
		319	URxvt.remote-selection.store: rsh ruth 'cat >/tmp/distributed-selection'
		320	URxvt.remote-selection.fetch: rsh ruth 'cat /tmp/distributed-selection'
		321
		322	=item selection-pastebin
		323
		324	This is a little rarely useful extension that Uploads the selection as
		325	textfile to a remote site (or does other things). (The implementation is
		326	not currently secure for use in a multiuser environment as it writes to
		327	F</tmp> directly.).
		328
		329	It listens to the C<selection-pastebin:remote-pastebin> keyboard command,
		330	i.e.
		331
		332	URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin
		333
		334	Pressing this combination runs a command with C<%> replaced by the name of
		335	the textfile. This command can be set via a resource:
		336
		337	URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.
		338
		339	And the default is likely not useful to anybody but the few people around
		340	here :)
		341
		342	The name of the textfile is the hex encoded md5 sum of the selection, so
		343	the same content should lead to the same filename.
		344
		345	After a successful upload the selection will be replaced by the text given
		346	in the C<selection-pastebin-url> resource (again, the % is the placeholder
		347	for the filename):
		348
		349	URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/%
		350
		351	=item example-refresh-hooks
		352
		353	Displays a very simple digital clock in the upper right corner of the
		354	window. Illustrates overwriting the refresh callbacks to create your own
		355	overlays or changes.
		356
		357	=back
		358
		359	=head1 API DOCUMENTATION
28		360
29	=head2 General API Considerations	361	=head2 General API Considerations
30		362
31	All objects (such as terminals, time watchers etc.) are typical	363	All objects (such as terminals, time watchers etc.) are typical
32	reference-to-hash objects. The hash can be used to store anything you	364	reference-to-hash objects. The hash can be used to store anything you
33	like. All members starting with an underscore (such as C<_ptr> or	365	like. All members starting with an underscore (such as C<_ptr> or
34	C<_hook>) are reserved for internal uses and must not be accessed or	366	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
35	modified).	367	modified).
36		368
37	When objects are destroyed on the C++ side, the perl object hashes are	369	When objects are destroyed on the C++ side, the perl object hashes are
38	emptied, so its best to store related objects such as time watchers and	370	emptied, so its best to store related objects such as time watchers and
39	the like inside the terminal object so they get destroyed as soon as the	371	the like inside the terminal object so they get destroyed as soon as the
40	terminal is destroyed.	372	terminal is destroyed.
41		373
		374	Argument names also often indicate the type of a parameter. Here are some
		375	hints on what they mean:
		376
		377	=over 4
		378
		379	=item $text
		380
		381	Rxvt-unicodes special way of encoding text, where one "unicode" character
		382	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		383
		384	=item $string
		385
		386	A perl text string, with an emphasis on I<text>. It can store all unicode
		387	characters and is to be distinguished with text encoded in a specific
		388	encoding (often locale-specific) and binary data.
		389
		390	=item $octets
		391
		392	Either binary data or - more common - a text string encoded in a
		393	locale-specific way.
		394
		395	=back
		396
		397	=head2 Extension Objects
		398
		399	Every perl extension is a perl class. A separate perl object is created
		400	for each terminal and each extension and passed as the first parameter to
		401	hooks. So extensions can use their C<$self> object without having to think
		402	about other extensions, with the exception of methods and members that
		403	begin with an underscore character C<_>: these are reserved for internal
		404	use.
		405
		406	Although it isn't a C<urxvt::term> object, you can call all methods of the
		407	C<urxvt::term> class on this object.
		408
		409	It has the following methods and data members:
		410
		411	=over 4
		412
		413	=item $urxvt_term = $self->{term}
		414
		415	Returns the C<urxvt::term> object associated with this instance of the
		416	extension. This member I<must not> be changed in any way.
		417
		418	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		419
		420	Dynamically enable the given hooks (named without the C<on_> prefix) for
		421	this extension, replacing any previous hook. This is useful when you want
		422	to overwrite time-critical hooks only temporarily.
		423
		424	=item $self->disable ($hook_name[, $hook_name..])
		425
		426	Dynamically disable the given hooks.
		427
		428	=back
		429
42	=head2 Hooks	430	=head2 Hooks
43		431
44	The following subroutines can be declared in loaded scripts, and will be called	432	The following subroutines can be declared in extension files, and will be
45	whenever the relevant event happens.	433	called whenever the relevant event happens.
46		434
47	All of them must return a boolean value. If it is true, then the event	435	The first argument passed to them is an extension object as described in
48	counts as being I<consumed>, and the invocation of other hooks is skipped,	436	the in the C<Extension Objects> section.
		437
		438	B<All> of these hooks must return a boolean value. If any of the called
		439	hooks returns true, then the event counts as being I<consumed>, and the
49	and the relevant action might not be carried out by the C++ code.	440	relevant action might not be carried out by the C++ code.
50		441
51	When in doubt, return a false value (preferably C<()>).	442	I<< When in doubt, return a false value (preferably C<()>). >>
52		443
53	=over 4	444	=over 4
54		445
55	=item on_init $term	446	=item on_init $term
56		447
57	Called after a new terminal object has been initialized, but before	448	Called after a new terminal object has been initialized, but before
58	windows are created or the command gets run.	449	windows are created or the command gets run. Most methods are unsafe to
		450	call or deliver senseless data, as terminal size and other characteristics
		451	have not yet been determined. You can safely query and change resources
		452	and options, though. For many purposes the C<on_start> hook is a better
		453	place.
		454
		455	=item on_start $term
		456
		457	Called at the very end of initialisation of a new terminal, just before
		458	trying to map (display) the toplevel and returning to the main loop.
		459
		460	=item on_destroy $term
		461
		462	Called whenever something tries to destroy terminal, when the terminal is
		463	still fully functional (not for long, though).
59		464
60	=item on_reset $term	465	=item on_reset $term
61		466
62	Called after the screen is "reset" for any reason, such as resizing or	467	Called after the screen is "reset" for any reason, such as resizing or
63	control sequences. Here is where you can react on changes to size-related	468	control sequences. Here is where you can react on changes to size-related
64	variables.	469	variables.
65		470
66	=item on_start $term	471	=item on_child_start $term, $pid
67		472
68	Called at the very end of initialisation of a new terminal, just before	473	Called just after the child process has been C<fork>ed.
69	returning to the mainloop.	474
		475	=item on_child_exit $term, $status
		476
		477	Called just after the child process has exited. C<$status> is the status
		478	from C<waitpid>.
70		479
71	=item on_sel_make $term, $eventtime	480	=item on_sel_make $term, $eventtime
72		481
73	Called whenever a selection has been made by the user, but before the	482	Called whenever a selection has been made by the user, but before the
74	selection text is copied, so changes to the beginning, end or type of the	483	selection text is copied, so changes to the beginning, end or type of the
…		…
81		490
82	Called whenever a selection has been copied, but before the selection is	491	Called whenever a selection has been copied, but before the selection is
83	requested from the server. The selection text can be queried and changed	492	requested from the server. The selection text can be queried and changed
84	by calling C<< $term->selection >>.	493	by calling C<< $term->selection >>.
85		494
86	Returning a true value aborts selection grabbing. It will still be hilighted.	495	Returning a true value aborts selection grabbing. It will still be highlighted.
87		496
88	=item on_focus_in $term	497	=item on_sel_extend $term
89		498
90	Called whenever the window gets the keyboard focus, before urxvt does	499	Called whenever the user tries to extend the selection (e.g. with a double
91	focus in processing.	500	click) and is either supposed to return false (normal operation), or
		501	should extend the selection itself and return true to suppress the built-in
		502	processing. This can happen multiple times, as long as the callback
		503	returns true, it will be called on every further click by the user and is
		504	supposed to enlarge the selection more and more, if possible.
92		505
93	=item on_focus_out $term	506	See the F<selection> example extension.
94
95	Called wheneever the window loses keyboard focus, before urxvt does focus
96	out processing.
97		507
98	=item on_view_change $term, $offset	508	=item on_view_change $term, $offset
99		509
100	Called whenever the view offset changes, i..e the user or program	510	Called whenever the view offset changes, i.e. the user or program
101	scrolls. Offset C<0> means display the normal terminal, positive values	511	scrolls. Offset C<0> means display the normal terminal, positive values
102	show this many lines of scrollback.	512	show this many lines of scrollback.
103		513
104	=item on_scroll_back $term, $lines, $saved	514	=item on_scroll_back $term, $lines, $saved
105		515
…		…
109		519
110	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	520	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
111	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	521	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
112	number of lines that will be in the scrollback buffer.	522	number of lines that will be in the scrollback buffer.
113		523
114	=item on_tty_activity $term *NYI*	524	=item on_osc_seq $term, $op, $args
115		525
116	Called whenever the program(s) running in the urxvt window send output.	526	Called on every OSC sequence and can be used to suppress it or modify its
		527	behaviour. The default should be to return an empty list. A true value
		528	suppresses execution of the request completely. Make sure you don't get
		529	confused by recursive invocations when you output an osc sequence within
		530	this callback.
		531
		532	C<on_osc_seq_perl> should be used for new behaviour.
		533
		534	=item on_osc_seq_perl $term, $string
		535
		536	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		537	operating system command) is processed. Cursor position and other state
		538	information is up-to-date when this happens. For interoperability, the
		539	string should start with the extension name and a colon, to distinguish
		540	it from commands for other extensions, and this might be enforced in the
		541	future.
		542
		543	Be careful not ever to trust (in a security sense) the data you receive,
		544	as its source can not easily be controlled (e-mail content, messages from
		545	other users on the same system etc.).
		546
		547	=item on_add_lines $term, $string
		548
		549	Called whenever text is about to be output, with the text as argument. You
		550	can filter/change and output the text yourself by returning a true value
		551	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		552	might be very slow, however, as your hook is called for B<all> text being
		553	output.
		554
		555	=item on_tt_write $term, $octets
		556
		557	Called whenever some data is written to the tty/pty and can be used to
		558	suppress or filter tty input.
		559
		560	=item on_line_update $term, $row
		561
		562	Called whenever a line was updated or changed. Can be used to filter
		563	screen output (e.g. underline urls or other useless stuff). Only lines
		564	that are being shown will be filtered, and, due to performance reasons,
		565	not always immediately.
		566
		567	The row number is always the topmost row of the line if the line spans
		568	multiple rows.
		569
		570	Please note that, if you change the line, then the hook might get called
		571	later with the already-modified line (e.g. if unrelated parts change), so
		572	you cannot just toggle rendition bits, but only set them.
117		573
118	=item on_refresh_begin $term	574	=item on_refresh_begin $term
119		575
120	Called just before the screen gets redrawn. Can be used for overlay	576	Called just before the screen gets redrawn. Can be used for overlay
121	or similar effects by modify terminal contents in refresh_begin, and	577	or similar effects by modify terminal contents in refresh_begin, and
…		…
124		580
125	=item on_refresh_end $term	581	=item on_refresh_end $term
126		582
127	Called just after the screen gets redrawn. See C<on_refresh_begin>.	583	Called just after the screen gets redrawn. See C<on_refresh_begin>.
128		584
		585	=item on_user_command $term, $string
		586
		587	Called whenever a user-configured event is being activated (e.g. via
		588	a C<perl:string> action bound to a key, see description of the B<keysym>
		589	resource in the @@RXVT_NAME@@(1) manpage).
		590
		591	The event is simply the action string. This interface is assumed to change
		592	slightly in the future.
		593
		594	=item on_resize_all_windows $tern, $new_width, $new_height
		595
		596	Called just after the new window size has been calculated, but before
		597	windows are actually being resized or hints are being set. If this hook
		598	returns TRUE, setting of the window hints is being skipped.
		599
		600	=item on_x_event $term, $event
		601
		602	Called on every X event received on the vt window (and possibly other
		603	windows). Should only be used as a last resort. Most event structure
		604	members are not passed.
		605
		606	=item on_root_event $term, $event
		607
		608	Like C<on_x_event>, but is called for events on the root window.
		609
		610	=item on_focus_in $term
		611
		612	Called whenever the window gets the keyboard focus, before rxvt-unicode
		613	does focus in processing.
		614
		615	=item on_focus_out $term
		616
		617	Called whenever the window loses keyboard focus, before rxvt-unicode does
		618	focus out processing.
		619
		620	=item on_configure_notify $term, $event
		621
		622	=item on_property_notify $term, $event
		623
		624	=item on_key_press $term, $event, $keysym, $octets
		625
		626	=item on_key_release $term, $event, $keysym
		627
		628	=item on_button_press $term, $event
		629
		630	=item on_button_release $term, $event
		631
		632	=item on_motion_notify $term, $event
		633
		634	=item on_map_notify $term, $event
		635
		636	=item on_unmap_notify $term, $event
		637
		638	Called whenever the corresponding X event is received for the terminal If
		639	the hook returns true, then the even will be ignored by rxvt-unicode.
		640
		641	The event is a hash with most values as named by Xlib (see the XEvent
		642	manpage), with the additional members C<row> and C<col>, which are the
		643	(real, not screen-based) row and column under the mouse cursor.
		644
		645	C<on_key_press> additionally receives the string rxvt-unicode would
		646	output, if any, in locale-specific encoding.
		647
		648	subwindow.
		649
		650	=item on_client_message $term, $event
		651
		652	=item on_wm_protocols $term, $event
		653
		654	=item on_wm_delete_window $term, $event
		655
		656	Called when various types of ClientMessage events are received (all with
		657	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		658
		659	=back
		660
		661	=cut
		662
		663	package urxvt;
		664
		665	use utf8;
		666	use strict;
		667	use Carp ();
		668	use Scalar::Util ();
		669	use List::Util ();
		670
		671	our $VERSION = 1;
		672	our $TERM;
		673	our @TERM_INIT;
		674	our @TERM_EXT;
		675	our @HOOKNAME;
		676	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		677	our %OPTION;
		678
		679	our $LIBDIR;
		680	our $RESNAME;
		681	our $RESCLASS;
		682	our $RXVTNAME;
		683
		684	our $NOCHAR = chr 0xffff;
		685
		686	=head2 Variables in the C<urxvt> Package
		687
		688	=over 4
		689
		690	=item $urxvt::LIBDIR
		691
		692	The rxvt-unicode library directory, where, among other things, the perl
		693	modules and scripts are stored.
		694
		695	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		696
		697	The resource class and name rxvt-unicode uses to look up X resources.
		698
		699	=item $urxvt::RXVTNAME
		700
		701	The basename of the installed binaries, usually C<urxvt>.
		702
		703	=item $urxvt::TERM
		704
		705	The current terminal. This variable stores the current C<urxvt::term>
		706	object, whenever a callback/hook is executing.
		707
		708	=item @urxvt::TERM_INIT
		709
		710	All code references in this array will be called as methods of the next newly
		711	created C<urxvt::term> object (during the C<on_init> phase). The array
		712	gets cleared before the code references that were in it are being executed,
		713	so references can push themselves onto it again if they so desire.
		714
		715	This complements to the perl-eval command line option, but gets executed
		716	first.
		717
		718	=item @urxvt::TERM_EXT
		719
		720	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		721	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		722	but before other extensions. Gets cleared just like C<@TERM_INIT>.
		723
129	=back	724	=back
130		725
131	=head2 Functions in the C<urxvt> Package	726	=head2 Functions in the C<urxvt> Package
132		727
133	=over 4	728	=over 4
…		…
145	that calls this function.	740	that calls this function.
146		741
147	Using this function has the advantage that its output ends up in the	742	Using this function has the advantage that its output ends up in the
148	correct place, e.g. on stderr of the connecting urxvtc client.	743	correct place, e.g. on stderr of the connecting urxvtc client.
149		744
		745	Messages have a size limit of 1023 bytes currently.
		746
		747	=item @terms = urxvt::termlist
		748
		749	Returns all urxvt::term objects that exist in this process, regardless of
		750	whether they are started, being destroyed etc., so be careful. Only term
		751	objects that have perl extensions attached will be returned (because there
		752	is no urxvt::term objet associated with others).
		753
150	=item $time = urxvt::NOW	754	=item $time = urxvt::NOW
151		755
152	Returns the "current time" (as per the event loop).	756	Returns the "current time" (as per the event loop).
153		757
		758	=item urxvt::CurrentTime
		759
		760	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		761	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		762	Button4Mask, Button5Mask, AnyModifier
		763
		764	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		765	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		766	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		767	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		768	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		769	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		770	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		771
		772	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		773	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		774	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		775	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		776	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		777	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		778	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		779
		780	Various constants for use in X calls and event processing.
		781
		782	=back
		783
		784	=head2 RENDITION
		785
		786	Rendition bitsets contain information about colour, font, font styles and
		787	similar information for each screen cell.
		788
		789	The following "macros" deal with changes in rendition sets. You should
		790	never just create a bitset, you should always modify an existing one,
		791	as they contain important information required for correct operation of
		792	rxvt-unicode.
		793
		794	=over 4
		795
		796	=item $rend = urxvt::DEFAULT_RSTYLE
		797
		798	Returns the default rendition, as used when the terminal is starting up or
		799	being reset. Useful as a base to start when creating renditions.
		800
		801	=item $rend = urxvt::OVERLAY_RSTYLE
		802
		803	Return the rendition mask used for overlays by default.
		804
		805	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
		806
		807	Return the bit that enabled bold, italic, blink, reverse-video and
		808	underline, respectively. To enable such a style, just logically OR it into
		809	the bitset.
		810
		811	=item $foreground = urxvt::GET_BASEFG $rend
		812
		813	=item $background = urxvt::GET_BASEBG $rend
		814
		815	Return the foreground/background colour index, respectively.
		816
		817	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
		818
		819	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		820
		821	=item $rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg
		822
		823	Replace the foreground/background colour in the rendition mask with the
		824	specified one.
		825
		826	=item $value = urxvt::GET_CUSTOM $rend
		827
		828	Return the "custom" value: Every rendition has 5 bits for use by
		829	extensions. They can be set and changed as you like and are initially
		830	zero.
		831
		832	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		833
		834	Change the custom value.
		835
		836	=back
		837
154	=cut	838	=cut
155		839
156	package urxvt;
157
158	use strict;
159
160	our $term;
161	our @HOOKNAME;
162	our $LIBDIR;
163
164	BEGIN {	840	BEGIN {
165	urxvt->bootstrap;
166
167	# overwrite perl's warn	841	# overwrite perl's warn
168	*CORE::GLOBAL::warn = sub {	842	*CORE::GLOBAL::warn = sub {
169	my $msg = join "", @_;	843	my $msg = join "", @_;
170	$msg .= "\n"	844	$msg .= "\n"
171	unless $msg =~ /\n$/;	845	unless $msg =~ /\n$/;
172	urxvt::warn ($msg);	846	urxvt::warn ($msg);
173	};	847	};
174	}	848	}
175		849
176	my @hook_count;	850	no warnings 'utf8';
		851
177	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	852	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
178		853
179	sub verbose {	854	sub verbose {
180	my ($level, $msg) = @_;	855	my ($level, $msg) = @_;
181	warn "$msg\n" if $level <= $verbosity;	856	warn "$msg\n" if $level <= $verbosity;
182	}	857	}
183		858
184	# find on_xxx subs in the package and register them	859	my %extension_pkg;
185	# as hooks
186	sub register_package($) {
187	my ($pkg) = @_;
188
189	for my $htype (0.. $#HOOKNAME) {
190	my $name = $HOOKNAME[$htype];
191
192	my $ref = $pkg->can ("on_" . lc $name)
193	or next;
194
195	$term->{_hook}[$htype]{$ref*1} = $ref;
196	$hook_count[$htype]++
197	or set_should_invoke $htype, 1;
198	}
199	}
200
201	my $script_pkg = "script0000";
202	my %script_pkg;
203		860
204	# load a single script into its own package, once only	861	# load a single script into its own package, once only
205	sub script_package($) {	862	sub extension_package($) {
206	my ($path) = @_;	863	my ($path) = @_;
207		864
208	$script_pkg{$path} ||= do {	865	$extension_pkg{$path} ||= do {
209	my $pkg = "urxvt::" . ($script_pkg++);	866	$path =~ /([^\/\\]+)$/;
		867	my $pkg = $1;
		868	$pkg =~ s/[^[:word:]]/_/g;
		869	$pkg = "urxvt::ext::$pkg";
210		870
211	verbose 3, "loading script '$path' into package '$pkg'";	871	verbose 3, "loading extension '$path' into package '$pkg'";
212		872
213	open my $fh, "<:raw", $path	873	open my $fh, "<:raw", $path
214	or die "$path: $!";	874	or die "$path: $!";
215		875
216	my $source = "package $pkg; use strict; use utf8;\n"	876	my $source =
		877	"package $pkg; use strict; use utf8; no warnings 'utf8';\n"
217	. "#line 1 \"$path\"\n{\n"	878	. "#line 1 \"$path\"\n{\n"
218	. (do { local $/; <$fh> })	879	. (do { local $/; <$fh> })
219	. "\n};\n1";	880	. "\n};\n1";
220		881
		882	eval $source
221	eval $source or die "$path: $@";	883	or die "$path: $@";
222		884
223	$pkg	885	$pkg
224	}	886	}
225	}	887	}
226		888
		889	our $retval; # return value for urxvt
		890
227	# called by the rxvt core	891	# called by the rxvt core
228	sub invoke {	892	sub invoke {
229	local $term = shift;	893	local $TERM = shift;
230	my $htype = shift;	894	my $htype = shift;
231		895
232	if ($htype == 0) { # INIT	896	if ($htype == 0) { # INIT
233	my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl");	897	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		898
		899	my %ext_arg;
234		900
235	for my $ext (split /:/, $term->resource ("perl_ext")) {	901	{
		902	my @init = @TERM_INIT;
		903	@TERM_INIT = ();
		904	$_->($TERM) for @init;
		905	my @pkg = @TERM_EXT;
		906	@TERM_EXT = ();
		907	$TERM->register_package ($_) for @pkg;
		908	}
		909
		910	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		911	if ($_ eq "default") {
		912	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline);
		913	} elsif (/^-(.*)$/) {
		914	delete $ext_arg{$1};
		915	} elsif (/^([^<]+)<(.*)>$/) {
		916	push @{ $ext_arg{$1} }, $2;
		917	} else {
		918	$ext_arg{$_} ||= [];
		919	}
		920	}
		921
		922	for my $ext (sort keys %ext_arg) {
236	my @files = grep -f $_, map "$_/$ext", @dirs;	923	my @files = grep -f $_, map "$_/$ext", @dirs;
237		924
238	if (@files) {	925	if (@files) {
239	register_package script_package $files[0];	926	$TERM->register_package (extension_package $files[0], $ext_arg{$ext});
240	} else {	927	} else {
241	warn "perl extension '$ext' not found in perl library search path\n";	928	warn "perl extension '$ext' not found in perl library search path\n";
242	}	929	}
243	}	930	}
244		931
245	} elsif ($htype == 1) { # DESTROY	932	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
246	if (my $hook = $term->{_hook}) {	933	warn $@ if $@;
247	for my $htype (0..$#$hook) {	934	}
248	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }	935
249	or set_should_invoke $htype, 0;	936	$retval = undef;
		937
		938	if (my $cb = $TERM->{_hook}[$htype]) {
		939	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		940	if $verbosity >= 10;
		941
		942	for my $pkg (keys %$cb) {
		943	my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg}, @_) };
		944	$retval ||= $retval_;
		945
		946	if ($@) {
		947	$TERM->ungrab; # better to lose the grab than the session
		948	warn $@;
250	}	949	}
251	}	950	}
		951
		952	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		953	if $verbosity >= 11;
252	}	954	}
253		955
254	my $cb = $term->{_hook}[$htype]	956	if ($htype == 1) { # DESTROY
255	or return;	957	# clear package objects
		958	%$_ = () for values %{ $TERM->{_pkg} };
256		959
257	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	960	# clear package
258	if $verbosity >= 10;	961	%$TERM = ();
259
260	while (my ($k, $v) = each %$cb) {
261	return 1 if $v->($term, @_);
262	}	962	}
263		963
		964	$retval
		965	}
		966
		967	sub SET_COLOR($$$) {
		968	SET_BGCOLOR (SET_FGCOLOR ($_[0], $_[1]), $_[2])
		969	}
		970
		971	# urxvt::term::extension
		972
		973	package urxvt::term::extension;
		974
		975	sub enable {
		976	my ($self, %hook) = @_;
		977	my $pkg = $self->{_pkg};
		978
		979	while (my ($name, $cb) = each %hook) {
		980	my $htype = $HOOKTYPE{uc $name};
		981	defined $htype
		982	or Carp::croak "unsupported hook type '$name'";
		983
		984	$self->set_should_invoke ($htype, +1)
		985	unless exists $self->{term}{_hook}[$htype]{$pkg};
		986
		987	$self->{term}{_hook}[$htype]{$pkg} = $cb;
264	0	988	}
265	}	989	}
266		990
267	=back	991	sub disable {
		992	my ($self, @hook) = @_;
		993	my $pkg = $self->{_pkg};
		994
		995	for my $name (@hook) {
		996	my $htype = $HOOKTYPE{uc $name};
		997	defined $htype
		998	or Carp::croak "unsupported hook type '$name'";
		999
		1000	$self->set_should_invoke ($htype, -1)
		1001	if delete $self->{term}{_hook}[$htype]{$pkg};
		1002	}
		1003	}
		1004
		1005	our $AUTOLOAD;
		1006
		1007	sub AUTOLOAD {
		1008	$AUTOLOAD =~ /:([^:]+)$/
		1009	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		1010
		1011	eval qq{
		1012	sub $AUTOLOAD {
		1013	my \$proxy = shift;
		1014	\$proxy->{term}->$1 (\@_)
		1015	}
		1016	1
		1017	} or die "FATAL: unable to compile method forwarder: $@";
		1018
		1019	goto &$AUTOLOAD;
		1020	}
		1021
		1022	sub DESTROY {
		1023	# nop
		1024	}
		1025
		1026	# urxvt::destroy_hook
		1027
		1028	sub urxvt::destroy_hook::DESTROY {
		1029	${$_[0]}->();
		1030	}
		1031
		1032	sub urxvt::destroy_hook(&) {
		1033	bless \shift, urxvt::destroy_hook::
		1034	}
		1035
		1036	package urxvt::anyevent;
		1037
		1038	=head2 The C<urxvt::anyevent> Class
		1039
		1040	The sole purpose of this class is to deliver an interface to the
		1041	C<AnyEvent> module - any module using it will work inside urxvt without
		1042	further programming. The only exception is that you cannot wait on
		1043	condition variables, but non-blocking condvar use is ok. What this means
		1044	is that you cannot use blocking APIs, but the non-blocking variant should
		1045	work.
		1046
		1047	=cut
		1048
		1049	our $VERSION = 1;
		1050
		1051	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		1052	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		1053
		1054	sub timer {
		1055	my ($class, %arg) = @_;
		1056
		1057	my $cb = $arg{cb};
		1058
		1059	urxvt::timer
		1060	->new
		1061	->start (urxvt::NOW + $arg{after})
		1062	->cb (sub {
		1063	$_[0]->stop; # need to cancel manually
		1064	$cb->();
		1065	})
		1066	}
		1067
		1068	sub io {
		1069	my ($class, %arg) = @_;
		1070
		1071	my $cb = $arg{cb};
		1072
		1073	bless [$arg{fh}, urxvt::iow
		1074	->new
		1075	->fd (fileno $arg{fh})
		1076	->events (($arg{poll} =~ /r/ ? 1 : 0)
		1077	| ($arg{poll} =~ /w/ ? 2 : 0))
		1078	->start
		1079	->cb (sub {
		1080	$cb->(($_[1] & 1 ? 'r' : '')
		1081	. ($_[1] & 2 ? 'w' : ''));
		1082	})],
		1083	urxvt::anyevent::
		1084	}
		1085
		1086	sub DESTROY {
		1087	$_[0][1]->stop;
		1088	}
		1089
		1090	sub condvar {
		1091	bless \my $flag, urxvt::anyevent::condvar::
		1092	}
		1093
		1094	sub urxvt::anyevent::condvar::broadcast {
		1095	${$_[0]}++;
		1096	}
		1097
		1098	sub urxvt::anyevent::condvar::wait {
		1099	unless (${$_[0]}) {
		1100	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
		1101	}
		1102	}
		1103
		1104	package urxvt::term;
268		1105
269	=head2 The C<urxvt::term> Class	1106	=head2 The C<urxvt::term> Class
270		1107
271	=over 4	1108	=over 4
		1109
		1110	=cut
		1111
		1112	# find on_xxx subs in the package and register them
		1113	# as hooks
		1114	sub register_package {
		1115	my ($self, $pkg, $argv) = @_;
		1116
		1117	no strict 'refs';
		1118
		1119	urxvt::verbose 6, "register package $pkg to $self";
		1120
		1121	@{"$pkg\::ISA"} = urxvt::term::extension::;
		1122
		1123	my $proxy = bless {
		1124	_pkg => $pkg,
		1125	argv => $argv,
		1126	}, $pkg;
		1127	Scalar::Util::weaken ($proxy->{term} = $self);
		1128
		1129	$self->{_pkg}{$pkg} = $proxy;
		1130
		1131	for my $name (@HOOKNAME) {
		1132	if (my $ref = $pkg->can ("on_" . lc $name)) {
		1133	$proxy->enable ($name => $ref);
		1134	}
		1135	}
		1136	}
		1137
		1138	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		1139
		1140	Creates a new terminal, very similar as if you had started it with system
		1141	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1142	hash which defines the environment of the new terminal.
		1143
		1144	Croaks (and probably outputs an error message) if the new instance
		1145	couldn't be created. Returns C<undef> if the new instance didn't
		1146	initialise perl, and the terminal object otherwise. The C<init> and
		1147	C<start> hooks will be called before this call returns, and are free to
		1148	refer to global data (which is race free).
		1149
		1150	=cut
		1151
		1152	sub new {
		1153	my ($class, $env, @args) = @_;
		1154
		1155	$env or Carp::croak "environment hash missing in call to urxvt::term->new";
		1156	@args or Carp::croak "name argument missing in call to urxvt::term->new";
		1157
		1158	_new ([ map "$_=$env->{$_}", keys %$env ], \@args);
		1159	}
		1160
		1161	=item $term->destroy
		1162
		1163	Destroy the terminal object (close the window, free resources
		1164	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1165	watchers (timers, io watchers) are still active.
		1166
		1167	=item $term->exec_async ($cmd[, @args])
		1168
		1169	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1170	("starts") programs in the background. This function takes care of setting
		1171	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1172	be preferred over explicit calls to C<exec> or C<system>.
		1173
		1174	Returns the pid of the subprocess or C<undef> on error.
		1175
		1176	=cut
		1177
		1178	sub exec_async {
		1179	my $self = shift;
		1180
		1181	my $pid = fork;
		1182
		1183	return $pid
		1184	if !defined $pid or $pid;
		1185
		1186	%ENV = %{ $self->env };
		1187
		1188	exec @_;
		1189	urxvt::_exit 255;
		1190	}
		1191
		1192	=item $isset = $term->option ($optval[, $set])
		1193
		1194	Returns true if the option specified by C<$optval> is enabled, and
		1195	optionally change it. All option values are stored by name in the hash
		1196	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1197
		1198	Here is a likely non-exhaustive list of option names, please see the
		1199	source file F</src/optinc.h> to see the actual list:
		1200
		1201	borderLess console cursorBlink cursorUnderline hold iconic insecure
		1202	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		1203	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
		1204	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
		1205	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
		1206	transparent tripleclickwords utmpInhibit visualBell
272		1207
273	=item $value = $term->resource ($name[, $newval])	1208	=item $value = $term->resource ($name[, $newval])
274		1209
275	Returns the current resource value associated with a given name and	1210	Returns the current resource value associated with a given name and
276	optionally sets a new value. Setting values is most useful in the C<init>	1211	optionally sets a new value. Setting values is most useful in the C<init>
…		…
285	likely change).	1220	likely change).
286		1221
287	Please note that resource strings will currently only be freed when the	1222	Please note that resource strings will currently only be freed when the
288	terminal is destroyed, so changing options frequently will eat memory.	1223	terminal is destroyed, so changing options frequently will eat memory.
289		1224
290	Here is a a likely non-exhaustive list of resource names, not all of which	1225	Here is a likely non-exhaustive list of resource names, not all of which
291	are supported in every build, please see the source to see the actual	1226	are supported in every build, please see the source file F</src/rsinc.h>
292	list:	1227	to see the actual list:
293		1228
294	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1229	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
295	borderLess color cursorBlink cursorUnderline cutchars delete_key	1230	borderLess color cursorBlink cursorUnderline cutchars delete_key
296	display_name embed ext_bwidth fade font geometry hold iconName	1231	display_name embed ext_bwidth fade font geometry hold iconName
297	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1232	imFont imLocale inputMethod insecure int_bwidth intensityStyles
298	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1233	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
299	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext	1234	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
300	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1235	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
301	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1236	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
302	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1237	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
303	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1238	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
304	shade term_name title transparent transparent_all tripleclickwords	1239	secondaryScreen secondaryScroll selectstyle shade term_name title
305	utmpInhibit visualBell	1240	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1241	visualBell
306		1242
307	=cut	1243	=cut
308		1244
309	sub urxvt::term::resource($$;$) {	1245	sub resource($$;$) {
310	my ($self, $name) = (shift, shift);	1246	my ($self, $name) = (shift, shift);
311	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1247	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
312	goto &urxvt::term::_resource;	1248	&urxvt::term::_resource
313	}	1249	}
		1250
		1251	=item $value = $term->x_resource ($pattern)
		1252
		1253	Returns the X-Resource for the given pattern, excluding the program or
		1254	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1255	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1256	resource with that pattern exists.
		1257
		1258	This method should only be called during the C<on_start> hook, as there is
		1259	only one resource database per display, and later invocations might return
		1260	the wrong resources.
		1261
		1262	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1263
		1264	Adds a keymap translation exactly as specified via a resource. See the
		1265	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		1266
		1267	=item $rend = $term->rstyle ([$new_rstyle])
		1268
		1269	Return and optionally change the current rendition. Text that is output by
		1270	the terminal application will use this style.
		1271
		1272	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1273
		1274	Return the current coordinates of the text cursor position and optionally
		1275	set it (which is usually bad as applications don't expect that).
314		1276
315	=item ($row, $col) = $term->selection_mark ([$row, $col])	1277	=item ($row, $col) = $term->selection_mark ([$row, $col])
316		1278
317	=item ($row, $col) = $term->selection_beg ([$row, $col])	1279	=item ($row, $col) = $term->selection_beg ([$row, $col])
318		1280
319	=item ($row, $col) = $term->selection_end ([$row, $col])	1281	=item ($row, $col) = $term->selection_end ([$row, $col])
320		1282
321	Return the current values of the selection mark, begin or end positions,	1283	Return the current values of the selection mark, begin or end positions,
322	and optionally set them to new values.	1284	and optionally set them to new values.
323		1285
		1286	=item $term->selection_make ($eventtime[, $rectangular])
		1287
		1288	Tries to make a selection as set by C<selection_beg> and
		1289	C<selection_end>. If C<$rectangular> is true (default: false), a
		1290	rectangular selection will be made. This is the prefered function to make
		1291	a selection.
		1292
324	=item $success = $term->selection_grab ($eventtime)	1293	=item $success = $term->selection_grab ($eventtime)
325		1294
326	Try to request the primary selection from the server (for example, as set	1295	Try to request the primary selection text from the server (for example, as
327	by the next method).	1296	set by the next method). No visual feedback will be given. This function
		1297	is mostly useful from within C<on_sel_grab> hooks.
328		1298
329	=item $oldtext = $term->selection ([$newtext])	1299	=item $oldtext = $term->selection ([$newtext])
330		1300
331	Return the current selection text and optionally replace it by C<$newtext>.	1301	Return the current selection text and optionally replace it by C<$newtext>.
332		1302
333	=item $term->scr_overlay ($x, $y, $text)	1303	=item $term->overlay_simple ($x, $y, $text)
334		1304
335	Create a simple multi-line overlay box. See the next method for details.	1305	Create a simple multi-line overlay box. See the next method for details.
336		1306
337	=cut	1307	=cut
338		1308
339	sub urxvt::term::scr_overlay {	1309	sub overlay_simple {
340	my ($self, $x, $y, $text) = @_;	1310	my ($self, $x, $y, $text) = @_;
341		1311
342	my @lines = split /\n/, $text;	1312	my @lines = split /\n/, $text;
343		1313
344	my $w = 0;	1314	my $w = List::Util::max map $self->strwidth ($_), @lines;
345	for (map $self->strwidth ($_), @lines) {
346	$w = $_ if $w < $_;
347	}
348		1315
349	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	1316	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
350	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1317	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
351	}
352		1318
		1319	$overlay
		1320	}
		1321
353	=item $term->scr_overlay_new ($x, $y, $width, $height)	1322	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
354		1323
355	Create a new (empty) overlay at the given position with the given	1324	Create a new (empty) overlay at the given position with the given
356	width/height. A border will be put around the box. If either C<$x> or	1325	width/height. C<$rstyle> defines the initial rendition style
357	C<$y> is negative, then this is counted from the right/bottom side,	1326	(default: C<OVERLAY_RSTYLE>).
358	respectively.
359		1327
360	=item $term->scr_overlay_off	1328	If C<$border> is C<2> (default), then a decorative border will be put
		1329	around the box.
361		1330
362	Switch the overlay off again.	1331	If either C<$x> or C<$y> is negative, then this is counted from the
		1332	right/bottom side, respectively.
363		1333
364	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	1334	This method returns an urxvt::overlay object. The overlay will be visible
		1335	as long as the perl object is referenced.
365		1336
366	Put a single character (specified numerically) at the given overlay	1337	The methods currently supported on C<urxvt::overlay> objects are:
367	position.
368		1338
		1339	=over 4
		1340
369	=item $term->scr_overlay_set ($x, $y, $text)	1341	=item $overlay->set ($x, $y, $text, $rend)
370		1342
371	Write a string at the given position into the overlay.	1343	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1344	text in rxvt-unicode's special encoding and an array of rendition values
		1345	at a specific position inside the overlay.
372		1346
		1347	=item $overlay->hide
		1348
		1349	If visible, hide the overlay, but do not destroy it.
		1350
		1351	=item $overlay->show
		1352
		1353	If hidden, display the overlay again.
		1354
		1355	=back
		1356
		1357	=item $popup = $term->popup ($event)
		1358
		1359	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1360	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1361	currently).
		1362
		1363	=cut
		1364
		1365	sub popup {
		1366	my ($self, $event) = @_;
		1367
		1368	$self->grab ($event->{time}, 1)
		1369	or return;
		1370
		1371	my $popup = bless {
		1372	term => $self,
		1373	event => $event,
		1374	}, urxvt::popup::;
		1375
		1376	Scalar::Util::weaken $popup->{term};
		1377
		1378	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1379	Scalar::Util::weaken $self->{_destroy}{$popup};
		1380
		1381	$popup
		1382	}
		1383
373	=item $cellwidth = $term->strwidth $string	1384	=item $cellwidth = $term->strwidth ($string)
374		1385
375	Returns the number of screen-cells this string would need. Correctly	1386	Returns the number of screen-cells this string would need. Correctly
376	accounts for wide and combining characters.	1387	accounts for wide and combining characters.
377		1388
378	=item $octets = $term->locale_encode $string	1389	=item $octets = $term->locale_encode ($string)
379		1390
380	Convert the given text string into the corresponding locale encoding.	1391	Convert the given text string into the corresponding locale encoding.
381		1392
382	=item $string = $term->locale_decode $octets	1393	=item $string = $term->locale_decode ($octets)
383		1394
384	Convert the given locale-encoded octets into a perl string.	1395	Convert the given locale-encoded octets into a perl string.
385		1396
		1397	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1398
		1399	XORs the rendition values in the given span with the provided value
		1400	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1401	refresh hooks to provide effects similar to the selection.
		1402
		1403	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1404
		1405	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1406	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1407	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1408	it instead. Both styles I<MUST NOT> contain font styles.
		1409
		1410	=item $term->scr_bell
		1411
		1412	Ring the bell!
		1413
		1414	=item $term->scr_add_lines ($string)
		1415
		1416	Write the given text string to the screen, as if output by the application
		1417	running inside the terminal. It may not contain command sequences (escape
		1418	codes), but is free to use line feeds, carriage returns and tabs. The
		1419	string is a normal text string, not in locale-dependent encoding.
		1420
		1421	Normally its not a good idea to use this function, as programs might be
		1422	confused by changes in cursor position or scrolling. Its useful inside a
		1423	C<on_add_lines> hook, though.
		1424
		1425	=item $term->scr_change_screen ($screen)
		1426
		1427	Switch to given screen - 0 primary, 1 secondary.
		1428
		1429	=item $term->cmd_parse ($octets)
		1430
		1431	Similar to C<scr_add_lines>, but the argument must be in the
		1432	locale-specific encoding of the terminal and can contain command sequences
		1433	(escape codes) that will be interpreted.
		1434
386	=item $term->tt_write ($octets)	1435	=item $term->tt_write ($octets)
387		1436
388	Write the octets given in C<$data> to the tty (i.e. as program input). To	1437	Write the octets given in C<$data> to the tty (i.e. as program input). To
389	pass characters instead of octets, you should convetr you strings first to	1438	pass characters instead of octets, you should convert your strings first
390	the locale-specific encoding using C<< $term->locale_encode >>.	1439	to the locale-specific encoding using C<< $term->locale_encode >>.
		1440
		1441	=item $old_events = $term->pty_ev_events ([$new_events])
		1442
		1443	Replaces the event mask of the pty watcher by the given event mask. Can
		1444	be used to suppress input and output handling to the pty/tty. See the
		1445	description of C<< urxvt::timer->events >>. Make sure to always restore
		1446	the previous value.
		1447
		1448	=item $fd = $term->pty_fd
		1449
		1450	Returns the master file descriptor for the pty in use, or C<-1> if no pty
		1451	is used.
		1452
		1453	=item $windowid = $term->parent
		1454
		1455	Return the window id of the toplevel window.
		1456
		1457	=item $windowid = $term->vt
		1458
		1459	Return the window id of the terminal window.
		1460
		1461	=item $term->vt_emask_add ($x_event_mask)
		1462
		1463	Adds the specified events to the vt event mask. Useful e.g. when you want
		1464	to receive pointer events all the times:
		1465
		1466	$term->vt_emask_add (urxvt::PointerMotionMask);
		1467
		1468	=item $term->focus_in
		1469
		1470	=item $term->focus_out
		1471
		1472	=item $term->key_press ($state, $keycode[, $time])
		1473
		1474	=item $term->key_release ($state, $keycode[, $time])
		1475
		1476	Deliver various fake events to to terminal.
		1477
		1478	=item $window_width = $term->width
		1479
		1480	=item $window_height = $term->height
		1481
		1482	=item $font_width = $term->fwidth
		1483
		1484	=item $font_height = $term->fheight
		1485
		1486	=item $font_ascent = $term->fbase
		1487
		1488	=item $terminal_rows = $term->nrow
		1489
		1490	=item $terminal_columns = $term->ncol
		1491
		1492	=item $has_focus = $term->focus
		1493
		1494	=item $is_mapped = $term->mapped
		1495
		1496	=item $max_scrollback = $term->saveLines
		1497
		1498	=item $nrow_plus_saveLines = $term->total_rows
		1499
		1500	=item $topmost_scrollback_row = $term->top_row
		1501
		1502	Return various integers describing terminal characteristics.
		1503
		1504	=item $x_display = $term->display_id
		1505
		1506	Return the DISPLAY used by rxvt-unicode.
		1507
		1508	=item $lc_ctype = $term->locale
		1509
		1510	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1511
		1512	=item $env = $term->env
		1513
		1514	Returns a copy of the environment in effect for the terminal as a hashref
		1515	similar to C<\%ENV>.
		1516
		1517	=item @envv = $term->envv
		1518
		1519	Returns the environment as array of strings of the form C<VAR=VALUE>.
		1520
		1521	=item @argv = $term->argv
		1522
		1523	Return the argument vector as this terminal, similar to @ARGV, but
		1524	includes the program name as first element.
		1525
		1526	=cut
		1527
		1528	sub env {
		1529	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), $_[0]->envv }
		1530	}
		1531
		1532	=item $modifiermask = $term->ModLevel3Mask
		1533
		1534	=item $modifiermask = $term->ModMetaMask
		1535
		1536	=item $modifiermask = $term->ModNumLockMask
		1537
		1538	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1539	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1540
		1541	=item $screen = $term->current_screen
		1542
		1543	Returns the currently displayed screen (0 primary, 1 secondary).
		1544
		1545	=item $cursor_is_hidden = $term->hidden_cursor
		1546
		1547	Returns whether the cursor is currently hidden or not.
		1548
		1549	=item $view_start = $term->view_start ([$newvalue])
		1550
		1551	Returns the row number of the topmost displayed line. Maximum value is
		1552	C<0>, which displays the normal terminal contents. Lower values scroll
		1553	this many lines into the scrollback buffer.
		1554
		1555	=item $term->want_refresh
		1556
		1557	Requests a screen refresh. At the next opportunity, rxvt-unicode will
		1558	compare the on-screen display with its stored representation. If they
		1559	differ, it redraws the differences.
		1560
		1561	Used after changing terminal contents to display them.
		1562
		1563	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
		1564
		1565	Returns the text of the entire row with number C<$row_number>. Row C<0>
		1566	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
		1567	terminal line. The scrollback buffer starts at line C<-1> and extends to
		1568	line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
		1569	is requested.
		1570
		1571	If C<$new_text> is specified, it will replace characters in the current
		1572	line, starting at column C<$start_col> (default C<0>), which is useful
		1573	to replace only parts of a line. The font index in the rendition will
		1574	automatically be updated.
		1575
		1576	C<$text> is in a special encoding: tabs and wide characters that use more
		1577	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
		1578	characters. Characters with combining characters and other characters that
		1579	do not fit into the normal tetx encoding will be replaced with characters
		1580	in the private use area.
		1581
		1582	You have to obey this encoding when changing text. The advantage is
		1583	that C<substr> and similar functions work on screen cells and not on
		1584	characters.
		1585
		1586	The methods C<< $term->special_encode >> and C<< $term->special_decode >>
		1587	can be used to convert normal strings into this encoding and vice versa.
		1588
		1589	=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
		1590
		1591	Like C<< $term->ROW_t >>, but returns an arrayref with rendition
		1592	bitsets. Rendition bitsets contain information about colour, font, font
		1593	styles and similar information. See also C<< $term->ROW_t >>.
		1594
		1595	When setting rendition, the font mask will be ignored.
		1596
		1597	See the section on RENDITION, above.
		1598
		1599	=item $length = $term->ROW_l ($row_number[, $new_length])
		1600
		1601	Returns the number of screen cells that are in use ("the line
		1602	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
		1603	line is joined with the following one.
		1604
		1605	=item $bool = $term->is_longer ($row_number)
		1606
		1607	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1608	joined with the following row), which means all characters are in use
		1609	and it is continued on the next row (and possibly a continuation of the
		1610	previous row(s)).
		1611
		1612	=item $line = $term->line ($row_number)
		1613
		1614	Create and return a new C<urxvt::line> object that stores information
		1615	about the logical line that row C<$row_number> is part of. It supports the
		1616	following methods:
		1617
		1618	=over 4
		1619
		1620	=item $text = $line->t ([$new_text])
		1621
		1622	Returns or replaces the full text of the line, similar to C<ROW_t>
		1623
		1624	=item $rend = $line->r ([$new_rend])
		1625
		1626	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1627
		1628	=item $length = $line->l
		1629
		1630	Returns the length of the line in cells, similar to C<ROW_l>.
		1631
		1632	=item $rownum = $line->beg
		1633
		1634	=item $rownum = $line->end
		1635
		1636	Return the row number of the first/last row of the line, respectively.
		1637
		1638	=item $offset = $line->offset_of ($row, $col)
		1639
		1640	Returns the character offset of the given row|col pair within the logical
		1641	line. Works for rows outside the line, too, and returns corresponding
		1642	offsets outside the string.
		1643
		1644	=item ($row, $col) = $line->coord_of ($offset)
		1645
		1646	Translates a string offset into terminal coordinates again.
391		1647
392	=back	1648	=back
		1649
		1650	=cut
		1651
		1652	sub line {
		1653	my ($self, $row) = @_;
		1654
		1655	my $maxrow = $self->nrow - 1;
		1656
		1657	my ($beg, $end) = ($row, $row);
		1658
		1659	--$beg while $self->ROW_is_longer ($beg - 1);
		1660	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1661
		1662	bless {
		1663	term => $self,
		1664	beg => $beg,
		1665	end => $end,
		1666	ncol => $self->ncol,
		1667	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1668	}, urxvt::line::
		1669	}
		1670
		1671	sub urxvt::line::t {
		1672	my ($self) = @_;
		1673
		1674	if (@_ > 1)
		1675	{
		1676	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1677	for $self->{beg} .. $self->{end};
		1678	}
		1679
		1680	defined wantarray &&
		1681	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1682	0, $self->{len}
		1683	}
		1684
		1685	sub urxvt::line::r {
		1686	my ($self) = @_;
		1687
		1688	if (@_ > 1)
		1689	{
		1690	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1691	for $self->{beg} .. $self->{end};
		1692	}
		1693
		1694	if (defined wantarray) {
		1695	my $rend = [
		1696	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1697	];
		1698	$#$rend = $self->{len} - 1;
		1699	return $rend;
		1700	}
		1701
		1702	()
		1703	}
		1704
		1705	sub urxvt::line::beg { $_[0]{beg} }
		1706	sub urxvt::line::end { $_[0]{end} }
		1707	sub urxvt::line::l { $_[0]{len} }
		1708
		1709	sub urxvt::line::offset_of {
		1710	my ($self, $row, $col) = @_;
		1711
		1712	($row - $self->{beg}) * $self->{ncol} + $col
		1713	}
		1714
		1715	sub urxvt::line::coord_of {
		1716	my ($self, $offset) = @_;
		1717
		1718	use integer;
		1719
		1720	(
		1721	$offset / $self->{ncol} + $self->{beg},
		1722	$offset % $self->{ncol}
		1723	)
		1724	}
		1725
		1726	=item $text = $term->special_encode $string
		1727
		1728	Converts a perl string into the special encoding used by rxvt-unicode,
		1729	where one character corresponds to one screen cell. See
		1730	C<< $term->ROW_t >> for details.
		1731
		1732	=item $string = $term->special_decode $text
		1733
		1734	Converts rxvt-unicodes text representation into a perl string. See
		1735	C<< $term->ROW_t >> for details.
		1736
		1737	=item $success = $term->grab_button ($button, $modifiermask[, $window = $term->vt])
		1738
		1739	=item $term->ungrab_button ($button, $modifiermask[, $window = $term->vt])
		1740
		1741	Register/unregister a synchronous button grab. See the XGrabButton
		1742	manpage.
		1743
		1744	=item $success = $term->grab ($eventtime[, $sync])
		1745
		1746	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1747	synchronous (C<$sync> is true). Also remembers the grab timestamp.
		1748
		1749	=item $term->allow_events_async
		1750
		1751	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1752
		1753	=item $term->allow_events_sync
		1754
		1755	Calls XAllowEvents with SyncBoth for the most recent grab.
		1756
		1757	=item $term->allow_events_replay
		1758
		1759	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1760	recent grab.
		1761
		1762	=item $term->ungrab
		1763
		1764	Calls XUngrab for the most recent grab. Is called automatically on
		1765	evaluation errors, as it is better to lose the grab in the error case as
		1766	the session.
		1767
		1768	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1769
		1770	=item $atom_name = $term->XGetAtomName ($atom)
		1771
		1772	=item @atoms = $term->XListProperties ($window)
		1773
		1774	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1775
		1776	=item $term->XChangeWindowProperty ($window, $property, $type, $format, $octets)
		1777
		1778	=item $term->XDeleteProperty ($window, $property)
		1779
		1780	=item $window = $term->DefaultRootWindow
		1781
		1782	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1783
		1784	=item $term->XMapWindow ($window)
		1785
		1786	=item $term->XUnmapWindow ($window)
		1787
		1788	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1789
		1790	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1791
		1792	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1793
		1794	Various X or X-related functions. The C<$term> object only serves as
		1795	the source of the display, otherwise those functions map more-or-less
		1796	directory onto the X functions of the same name.
		1797
		1798	=back
		1799
		1800	=cut
		1801
		1802	package urxvt::popup;
		1803
		1804	=head2 The C<urxvt::popup> Class
		1805
		1806	=over 4
		1807
		1808	=cut
		1809
		1810	sub add_item {
		1811	my ($self, $item) = @_;
		1812
		1813	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1814	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1815	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1816
		1817	$item->{render} ||= sub { $_[0]{text} };
		1818
		1819	push @{ $self->{item} }, $item;
		1820	}
		1821
		1822	=item $popup->add_title ($title)
		1823
		1824	Adds a non-clickable title to the popup.
		1825
		1826	=cut
		1827
		1828	sub add_title {
		1829	my ($self, $title) = @_;
		1830
		1831	$self->add_item ({
		1832	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1833	text => $title,
		1834	activate => sub { },
		1835	});
		1836	}
		1837
		1838	=item $popup->add_separator ([$sepchr])
		1839
		1840	Creates a separator, optionally using the character given as C<$sepchr>.
		1841
		1842	=cut
		1843
		1844	sub add_separator {
		1845	my ($self, $sep) = @_;
		1846
		1847	$sep ||= "=";
		1848
		1849	$self->add_item ({
		1850	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1851	text => "",
		1852	render => sub { $sep x $self->{term}->ncol },
		1853	activate => sub { },
		1854	});
		1855	}
		1856
		1857	=item $popup->add_button ($text, $cb)
		1858
		1859	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1860	selected.
		1861
		1862	=cut
		1863
		1864	sub add_button {
		1865	my ($self, $text, $cb) = @_;
		1866
		1867	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1868	}
		1869
		1870	=item $popup->add_toggle ($text, $initial_value, $cb)
		1871
		1872	Adds a toggle/checkbox item to the popup. The callback gets called
		1873	whenever it gets toggled, with a boolean indicating its new value as its
		1874	first argument.
		1875
		1876	=cut
		1877
		1878	sub add_toggle {
		1879	my ($self, $text, $value, $cb) = @_;
		1880
		1881	my $item; $item = {
		1882	type => "button",
		1883	text => " $text",
		1884	value => $value,
		1885	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1886	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1887	};
		1888
		1889	$self->add_item ($item);
		1890	}
		1891
		1892	=item $popup->show
		1893
		1894	Displays the popup (which is initially hidden).
		1895
		1896	=cut
		1897
		1898	sub show {
		1899	my ($self) = @_;
		1900
		1901	local $urxvt::popup::self = $self;
		1902
		1903	my $env = $self->{term}->env;
		1904	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1905	delete $env->{LC_ALL};
		1906	$env->{LC_CTYPE} = $self->{term}->locale;
		1907
		1908	urxvt::term->new ($env, "popup",
		1909	"--perl-lib" => "", "--perl-ext-common" => "",
		1910	"-pty-fd" => -1, "-sl" => 0,
		1911	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		1912	"--transient-for" => $self->{term}->parent,
		1913	"-display" => $self->{term}->display_id,
		1914	"-pe" => "urxvt-popup")
		1915	or die "unable to create popup window\n";
		1916	}
		1917
		1918	sub DESTROY {
		1919	my ($self) = @_;
		1920
		1921	delete $self->{term}{_destroy}{$self};
		1922	$self->{term}->ungrab;
		1923	}
		1924
		1925	=back
		1926
		1927	=cut
		1928
		1929	package urxvt::watcher;
		1930
		1931	@urxvt::timer::ISA = __PACKAGE__;
		1932	@urxvt::iow::ISA = __PACKAGE__;
		1933	@urxvt::pw::ISA = __PACKAGE__;
		1934	@urxvt::iw::ISA = __PACKAGE__;
393		1935
394	=head2 The C<urxvt::timer> Class	1936	=head2 The C<urxvt::timer> Class
395		1937
396	This class implements timer watchers/events. Time is represented as a	1938	This class implements timer watchers/events. Time is represented as a
397	fractional number of seconds since the epoch. Example:	1939	fractional number of seconds since the epoch. Example:
398		1940
399	# create a digital clock display in upper right corner	1941	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
400	$term->{timer} = urxvt::timer	1942	$term->{timer} = urxvt::timer
401	->new	1943	->new
402	->start (urxvt::NOW)	1944	->interval (1)
403	->cb (sub {	1945	->cb (sub {
404	my ($timer) = @_;
405	my $time = $timer->at;
406	$timer->start ($time + 1);
407	$self->scr_overlay (-1, 0,	1946	$term->{overlay}->set (0, 0,
408	POSIX::strftime "%H:%M:%S", localtime $time);	1947	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
409	});	1948	});
410		1949
411	=over 4	1950	=over 4
412		1951
413	=item $timer = new urxvt::timer	1952	=item $timer = new urxvt::timer
414		1953
415	Create a new timer object in stopped state.	1954	Create a new timer object in started state. It is scheduled to fire
		1955	immediately.
416		1956
417	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	1957	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
418		1958
419	Set the callback to be called when the timer triggers.	1959	Set the callback to be called when the timer triggers.
420		1960
…		…
424		1964
425	=item $timer = $timer->set ($tstamp)	1965	=item $timer = $timer->set ($tstamp)
426		1966
427	Set the time the event is generated to $tstamp.	1967	Set the time the event is generated to $tstamp.
428		1968
		1969	=item $timer = $timer->interval ($interval)
		1970
		1971	Normally (and when C<$interval> is C<0>), the timer will automatically
		1972	stop after it has fired once. If C<$interval> is non-zero, then the timer
		1973	is automatically rescheduled at the given intervals.
		1974
429	=item $timer = $timer->start	1975	=item $timer = $timer->start
430		1976
431	Start the timer.	1977	Start the timer.
432		1978
433	=item $timer = $timer->start ($tstamp)	1979	=item $timer = $timer->start ($tstamp)
434		1980
435	Set the event trigger time to C<$tstamp> and start the timer.	1981	Set the event trigger time to C<$tstamp> and start the timer.
		1982
		1983	=item $timer = $timer->after ($delay)
		1984
		1985	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
436		1986
437	=item $timer = $timer->stop	1987	=item $timer = $timer->stop
438		1988
439	Stop the timer.	1989	Stop the timer.
440		1990
…		…
446		1996
447	$term->{socket} = ...	1997	$term->{socket} = ...
448	$term->{iow} = urxvt::iow	1998	$term->{iow} = urxvt::iow
449	->new	1999	->new
450	->fd (fileno $term->{socket})	2000	->fd (fileno $term->{socket})
451	->events (1) # wait for read data	2001	->events (urxvt::EVENT_READ)
452	->start	2002	->start
453	->cb (sub {	2003	->cb (sub {
454	my ($iow, $revents) = @_;	2004	my ($iow, $revents) = @_;
455	# $revents must be 1 here, no need to check	2005	# $revents must be 1 here, no need to check
456	sysread $term->{socket}, my $buf, 8192	2006	sysread $term->{socket}, my $buf, 8192
…		…
469	Set the callback to be called when io events are triggered. C<$reventmask>	2019	Set the callback to be called when io events are triggered. C<$reventmask>
470	is a bitset as described in the C<events> method.	2020	is a bitset as described in the C<events> method.
471		2021
472	=item $iow = $iow->fd ($fd)	2022	=item $iow = $iow->fd ($fd)
473		2023
474	Set the filedescriptor (not handle) to watch.	2024	Set the file descriptor (not handle) to watch.
475		2025
476	=item $iow = $iow->events ($eventmask)	2026	=item $iow = $iow->events ($eventmask)
477		2027
478	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	2028	Set the event mask to watch. The only allowed values are
479	data, Bit #1 (value C<2>) enables watching for write data.	2029	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		2030	together, or C<urxvt::EVENT_NONE>.
480		2031
481	=item $iow = $iow->start	2032	=item $iow = $iow->start
482		2033
483	Start watching for requested events on the given handle.	2034	Start watching for requested events on the given handle.
484		2035
485	=item $iow = $iow->stop	2036	=item $iow = $iow->stop
486		2037
487	Stop watching for events on the given filehandle.	2038	Stop watching for events on the given file handle.
		2039
		2040	=back
		2041
		2042	=head2 The C<urxvt::iw> Class
		2043
		2044	This class implements idle watchers, that get called automatically when
		2045	the process is idle. They should return as fast as possible, after doing
		2046	some useful work.
		2047
		2048	=over 4
		2049
		2050	=item $iw = new urxvt::iw
		2051
		2052	Create a new idle watcher object in stopped state.
		2053
		2054	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		2055
		2056	Set the callback to be called when the watcher triggers.
		2057
		2058	=item $timer = $timer->start
		2059
		2060	Start the watcher.
		2061
		2062	=item $timer = $timer->stop
		2063
		2064	Stop the watcher.
		2065
		2066	=back
		2067
		2068	=head2 The C<urxvt::pw> Class
		2069
		2070	This class implements process watchers. They create an event whenever a
		2071	process exits, after which they stop automatically.
		2072
		2073	my $pid = fork;
		2074	...
		2075	$term->{pw} = urxvt::pw
		2076	->new
		2077	->start ($pid)
		2078	->cb (sub {
		2079	my ($pw, $exit_status) = @_;
		2080	...
		2081	});
		2082
		2083	=over 4
		2084
		2085	=item $pw = new urxvt::pw
		2086
		2087	Create a new process watcher in stopped state.
		2088
		2089	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		2090
		2091	Set the callback to be called when the timer triggers.
		2092
		2093	=item $pw = $timer->start ($pid)
		2094
		2095	Tells the watcher to start watching for process C<$pid>.
		2096
		2097	=item $pw = $pw->stop
		2098
		2099	Stop the watcher.
488		2100
489	=back	2101	=back
490		2102
491	=head1 ENVIRONMENT	2103	=head1 ENVIRONMENT
492		2104
…		…
495	This variable controls the verbosity level of the perl extension. Higher	2107	This variable controls the verbosity level of the perl extension. Higher
496	numbers indicate more verbose output.	2108	numbers indicate more verbose output.
497		2109
498	=over 4	2110	=over 4
499		2111
500	=item 0 - only fatal messages	2112	=item == 0 - fatal messages
501		2113
502	=item 3 - script loading and management	2114	=item >= 3 - script loading and management
503		2115
504	=item 10 - all events received	2116	=item >=10 - all called hooks
		2117
		2118	=item >=11 - hook return values
505		2119
506	=back	2120	=back
507		2121
508	=head1 AUTHOR	2122	=head1 AUTHOR
509		2123

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