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Revision 1.16 by root, Tue Jan 3 01:41:06 2006 UTC vs.
Revision 1.145 by root, Thu Aug 10 22:53:20 2006 UTC

		1	=encoding utf8
		2
1	=head1 NAME	3	=head1 NAME
2		4
3	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter	5	@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter
4		6
5	=head1 SYNOPSIS	7	=head1 SYNOPSIS
…		…
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.
28		30
29	=head1 PACKAGED EXTENSIONS	31	=head1 PREPACKAGED EXTENSIONS
30		32
31	This section describes the extensiosn delivered with this version. You can	33	This section describes the extensions delivered with this release. You can
32	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.	34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
33		35
34	You can activate them like this:	36	You can activate them like this:
35		37
36	@@RXVT_NAME@@ -pe <extensionname>	38	@@RXVT_NAME@@ -pe <extensionname>
37		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
38	=over 4	44	=over 4
39		45
40	=item selection	46	=item selection (enabled by default)
41		47
42	Miscellaneous selection modifications.	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:
43		83
44	=over 4	84	=over 4
45		85
46	=item rot13	86	=item rot13
47		87
…		…
49		89
50	URxvt.keysym.C-M-r: perl:selection:rot13	90	URxvt.keysym.C-M-r: perl:selection:rot13
51		91
52	=back	92	=back
53		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
54	=item digital-clock	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
55		352
56	Displays a very simple digital clock in the upper right corner of the	353	Displays a very simple digital clock in the upper right corner of the
57	window. Illustrates overwriting the refresh callbacks to create your own	354	window. Illustrates overwriting the refresh callbacks to create your own
58	overlays or changes.	355	overlays or changes.
59		356
60	=item simple-overlay-clock
61
62	Displays a digital clock using the built-in overlay (colorful, useless).
63
64	=back	357	=back
		358
		359	=head1 API DOCUMENTATION
65		360
66	=head2 General API Considerations	361	=head2 General API Considerations
67		362
68	All objects (such as terminals, time watchers etc.) are typical	363	All objects (such as terminals, time watchers etc.) are typical
69	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
70	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
71	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
72	modified).	367	modified).
73		368
74	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
75	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
76	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
77	terminal is destroyed.	372	terminal is destroyed.
78		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 $octets
		391
		392	Either binary data or - more common - a text string encoded in a
		393	locale-specific way.
		394
		395	=back
		396
		397	=head2 Extension Objects
		398
		399	Every perl extension is a perl class. A separate perl object is created
		400	for each terminal, and each terminal has its own set of extenion objects,
		401	which are passed as the first parameter to hooks. So extensions can use
		402	their C<$self> object without having to think about clashes with other
		403	extensions or other terminals, with the exception of methods and members
		404	that begin with an underscore character C<_>: these are reserved for
		405	internal use.
		406
		407	Although it isn't a C<urxvt::term> object, you can call all methods of the
		408	C<urxvt::term> class on this object.
		409
		410	It has the following methods and data members:
		411
		412	=over 4
		413
		414	=item $urxvt_term = $self->{term}
		415
		416	Returns the C<urxvt::term> object associated with this instance of the
		417	extension. This member I<must not> be changed in any way.
		418
		419	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		420
		421	Dynamically enable the given hooks (named without the C<on_> prefix) for
		422	this extension, replacing any previous hook. This is useful when you want
		423	to overwrite time-critical hooks only temporarily.
		424
		425	=item $self->disable ($hook_name[, $hook_name..])
		426
		427	Dynamically disable the given hooks.
		428
		429	=back
		430
79	=head2 Hooks	431	=head2 Hooks
80		432
81	The following subroutines can be declared in loaded scripts, and will be called	433	The following subroutines can be declared in extension files, and will be
82	whenever the relevant event happens.	434	called whenever the relevant event happens.
83		435
84	All of them must return a boolean value. If it is true, then the event	436	The first argument passed to them is an extension object as described in
85	counts as being I<consumed>, and the invocation of other hooks is skipped,	437	the in the C<Extension Objects> section.
		438
		439	B<All> of these hooks must return a boolean value. If any of the called
		440	hooks returns true, then the event counts as being I<consumed>, and the
86	and the relevant action might not be carried out by the C++ code.	441	relevant action might not be carried out by the C++ code.
87		442
88	When in doubt, return a false value (preferably C<()>).	443	I<< When in doubt, return a false value (preferably C<()>). >>
89		444
90	=over 4	445	=over 4
91		446
92	=item on_init $term	447	=item on_init $term
93		448
94	Called after a new terminal object has been initialized, but before	449	Called after a new terminal object has been initialized, but before
95	windows are created or the command gets run.	450	windows are created or the command gets run. Most methods are unsafe to
		451	call or deliver senseless data, as terminal size and other characteristics
		452	have not yet been determined. You can safely query and change resources
		453	and options, though. For many purposes the C<on_start> hook is a better
		454	place.
		455
		456	=item on_start $term
		457
		458	Called at the very end of initialisation of a new terminal, just before
		459	trying to map (display) the toplevel and returning to the main loop.
		460
		461	=item on_destroy $term
		462
		463	Called whenever something tries to destroy terminal, when the terminal is
		464	still fully functional (not for long, though).
96		465
97	=item on_reset $term	466	=item on_reset $term
98		467
99	Called after the screen is "reset" for any reason, such as resizing or	468	Called after the screen is "reset" for any reason, such as resizing or
100	control sequences. Here is where you can react on changes to size-related	469	control sequences. Here is where you can react on changes to size-related
101	variables.	470	variables.
102		471
103	=item on_start $term	472	=item on_child_start $term, $pid
104		473
105	Called at the very end of initialisation of a new terminal, just before	474	Called just after the child process has been C<fork>ed.
106	returning to the mainloop.	475
		476	=item on_child_exit $term, $status
		477
		478	Called just after the child process has exited. C<$status> is the status
		479	from C<waitpid>.
107		480
108	=item on_sel_make $term, $eventtime	481	=item on_sel_make $term, $eventtime
109		482
110	Called whenever a selection has been made by the user, but before the	483	Called whenever a selection has been made by the user, but before the
111	selection text is copied, so changes to the beginning, end or type of the	484	selection text is copied, so changes to the beginning, end or type of the
…		…
118		491
119	Called whenever a selection has been copied, but before the selection is	492	Called whenever a selection has been copied, but before the selection is
120	requested from the server. The selection text can be queried and changed	493	requested from the server. The selection text can be queried and changed
121	by calling C<< $term->selection >>.	494	by calling C<< $term->selection >>.
122		495
123	Returning a true value aborts selection grabbing. It will still be hilighted.	496	Returning a true value aborts selection grabbing. It will still be highlighted.
124		497
125	=item on_focus_in $term	498	=item on_sel_extend $term
126		499
127	Called whenever the window gets the keyboard focus, before urxvt does	500	Called whenever the user tries to extend the selection (e.g. with a double
128	focus in processing.	501	click) and is either supposed to return false (normal operation), or
		502	should extend the selection itself and return true to suppress the built-in
		503	processing. This can happen multiple times, as long as the callback
		504	returns true, it will be called on every further click by the user and is
		505	supposed to enlarge the selection more and more, if possible.
129		506
130	=item on_focus_out $term	507	See the F<selection> example extension.
131
132	Called wheneever the window loses keyboard focus, before urxvt does focus
133	out processing.
134		508
135	=item on_view_change $term, $offset	509	=item on_view_change $term, $offset
136		510
137	Called whenever the view offset changes, i..e the user or program	511	Called whenever the view offset changes, i.e. the user or program
138	scrolls. Offset C<0> means display the normal terminal, positive values	512	scrolls. Offset C<0> means display the normal terminal, positive values
139	show this many lines of scrollback.	513	show this many lines of scrollback.
140		514
141	=item on_scroll_back $term, $lines, $saved	515	=item on_scroll_back $term, $lines, $saved
142		516
…		…
146		520
147	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	521	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
148	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	522	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
149	number of lines that will be in the scrollback buffer.	523	number of lines that will be in the scrollback buffer.
150		524
151	=item on_tty_activity $term *NYI*	525	=item on_osc_seq $term, $op, $args
152		526
153	Called whenever the program(s) running in the urxvt window send output.	527	Called on every OSC sequence and can be used to suppress it or modify its
		528	behaviour. The default should be to return an empty list. A true value
		529	suppresses execution of the request completely. Make sure you don't get
		530	confused by recursive invocations when you output an osc sequence within
		531	this callback.
		532
		533	C<on_osc_seq_perl> should be used for new behaviour.
		534
		535	=item on_osc_seq_perl $term, $string
		536
		537	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		538	operating system command) is processed. Cursor position and other state
		539	information is up-to-date when this happens. For interoperability, the
		540	string should start with the extension name and a colon, to distinguish
		541	it from commands for other extensions, and this might be enforced in the
		542	future.
		543
		544	Be careful not ever to trust (in a security sense) the data you receive,
		545	as its source can not easily be controlled (e-mail content, messages from
		546	other users on the same system etc.).
		547
		548	=item on_add_lines $term, $string
		549
		550	Called whenever text is about to be output, with the text as argument. You
		551	can filter/change and output the text yourself by returning a true value
		552	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		553	might be very slow, however, as your hook is called for B<all> text being
		554	output.
		555
		556	=item on_tt_write $term, $octets
		557
		558	Called whenever some data is written to the tty/pty and can be used to
		559	suppress or filter tty input.
		560
		561	=item on_line_update $term, $row
		562
		563	Called whenever a line was updated or changed. Can be used to filter
		564	screen output (e.g. underline urls or other useless stuff). Only lines
		565	that are being shown will be filtered, and, due to performance reasons,
		566	not always immediately.
		567
		568	The row number is always the topmost row of the line if the line spans
		569	multiple rows.
		570
		571	Please note that, if you change the line, then the hook might get called
		572	later with the already-modified line (e.g. if unrelated parts change), so
		573	you cannot just toggle rendition bits, but only set them.
154		574
155	=item on_refresh_begin $term	575	=item on_refresh_begin $term
156		576
157	Called just before the screen gets redrawn. Can be used for overlay	577	Called just before the screen gets redrawn. Can be used for overlay
158	or similar effects by modify terminal contents in refresh_begin, and	578	or similar effects by modify terminal contents in refresh_begin, and
…		…
161		581
162	=item on_refresh_end $term	582	=item on_refresh_end $term
163		583
164	Called just after the screen gets redrawn. See C<on_refresh_begin>.	584	Called just after the screen gets redrawn. See C<on_refresh_begin>.
165		585
166	=item on_keyboard_command $term, $string	586	=item on_user_command $term, $string
167		587
168	Called whenever the user presses a key combination that has a	588	Called whenever a user-configured event is being activated (e.g. via
169	C<perl:string> action bound to it (see description of the B<keysym>	589	a C<perl:string> action bound to a key, see description of the B<keysym>
170	resource in the @@RXVT_NAME@@(1) manpage).	590	resource in the @@RXVT_NAME@@(1) manpage).
		591
		592	The event is simply the action string. This interface is assumed to change
		593	slightly in the future.
		594
		595	=item on_resize_all_windows $tern, $new_width, $new_height
		596
		597	Called just after the new window size has been calculated, but before
		598	windows are actually being resized or hints are being set. If this hook
		599	returns TRUE, setting of the window hints is being skipped.
		600
		601	=item on_x_event $term, $event
		602
		603	Called on every X event received on the vt window (and possibly other
		604	windows). Should only be used as a last resort. Most event structure
		605	members are not passed.
		606
		607	=item on_root_event $term, $event
		608
		609	Like C<on_x_event>, but is called for events on the root window.
		610
		611	=item on_focus_in $term
		612
		613	Called whenever the window gets the keyboard focus, before rxvt-unicode
		614	does focus in processing.
		615
		616	=item on_focus_out $term
		617
		618	Called whenever the window loses keyboard focus, before rxvt-unicode does
		619	focus out processing.
		620
		621	=item on_configure_notify $term, $event
		622
		623	=item on_property_notify $term, $event
		624
		625	=item on_key_press $term, $event, $keysym, $octets
		626
		627	=item on_key_release $term, $event, $keysym
		628
		629	=item on_button_press $term, $event
		630
		631	=item on_button_release $term, $event
		632
		633	=item on_motion_notify $term, $event
		634
		635	=item on_map_notify $term, $event
		636
		637	=item on_unmap_notify $term, $event
		638
		639	Called whenever the corresponding X event is received for the terminal If
		640	the hook returns true, then the even will be ignored by rxvt-unicode.
		641
		642	The event is a hash with most values as named by Xlib (see the XEvent
		643	manpage), with the additional members C<row> and C<col>, which are the
		644	(real, not screen-based) row and column under the mouse cursor.
		645
		646	C<on_key_press> additionally receives the string rxvt-unicode would
		647	output, if any, in locale-specific encoding.
		648
		649	subwindow.
		650
		651	=item on_client_message $term, $event
		652
		653	=item on_wm_protocols $term, $event
		654
		655	=item on_wm_delete_window $term, $event
		656
		657	Called when various types of ClientMessage events are received (all with
		658	format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
		659
		660	=back
		661
		662	=cut
		663
		664	package urxvt;
		665
		666	use utf8;
		667	use strict;
		668	use Carp ();
		669	use Scalar::Util ();
		670	use List::Util ();
		671
		672	our $VERSION = 1;
		673	our $TERM;
		674	our @TERM_INIT;
		675	our @TERM_EXT;
		676	our @HOOKNAME;
		677	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		678	our %OPTION;
		679
		680	our $LIBDIR;
		681	our $RESNAME;
		682	our $RESCLASS;
		683	our $RXVTNAME;
		684
		685	our $NOCHAR = chr 0xffff;
		686
		687	=head2 Variables in the C<urxvt> Package
		688
		689	=over 4
		690
		691	=item $urxvt::LIBDIR
		692
		693	The rxvt-unicode library directory, where, among other things, the perl
		694	modules and scripts are stored.
		695
		696	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		697
		698	The resource class and name rxvt-unicode uses to look up X resources.
		699
		700	=item $urxvt::RXVTNAME
		701
		702	The basename of the installed binaries, usually C<urxvt>.
		703
		704	=item $urxvt::TERM
		705
		706	The current terminal. This variable stores the current C<urxvt::term>
		707	object, whenever a callback/hook is executing.
		708
		709	=item @urxvt::TERM_INIT
		710
		711	All code references in this array will be called as methods of the next newly
		712	created C<urxvt::term> object (during the C<on_init> phase). The array
		713	gets cleared before the code references that were in it are being executed,
		714	so references can push themselves onto it again if they so desire.
		715
		716	This complements to the perl-eval command line option, but gets executed
		717	first.
		718
		719	=item @urxvt::TERM_EXT
		720
		721	Works similar to C<@TERM_INIT>, but contains perl package/class names, which
		722	get registered as normal extensions after calling the hooks in C<@TERM_INIT>
		723	but before other extensions. Gets cleared just like C<@TERM_INIT>.
171		724
172	=back	725	=back
173		726
174	=head2 Functions in the C<urxvt> Package	727	=head2 Functions in the C<urxvt> Package
175		728
…		…
188	that calls this function.	741	that calls this function.
189		742
190	Using this function has the advantage that its output ends up in the	743	Using this function has the advantage that its output ends up in the
191	correct place, e.g. on stderr of the connecting urxvtc client.	744	correct place, e.g. on stderr of the connecting urxvtc client.
192		745
		746	Messages have a size limit of 1023 bytes currently.
		747
		748	=item @terms = urxvt::termlist
		749
		750	Returns all urxvt::term objects that exist in this process, regardless of
		751	whether they are started, being destroyed etc., so be careful. Only term
		752	objects that have perl extensions attached will be returned (because there
		753	is no urxvt::term objet associated with others).
		754
193	=item $time = urxvt::NOW	755	=item $time = urxvt::NOW
194		756
195	Returns the "current time" (as per the event loop).	757	Returns the "current time" (as per the event loop).
196		758
		759	=item urxvt::CurrentTime
		760
		761	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		762	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		763	Button4Mask, Button5Mask, AnyModifier
		764
		765	=item urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
		766	ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
		767	PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
		768	Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
		769	KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
		770	ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
		771	FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask
		772
		773	=item urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
		774	EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
		775	GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
		776	UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
		777	ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
		778	CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
		779	SelectionNotify, ColormapNotify, ClientMessage, MappingNotify
		780
		781	Various constants for use in X calls and event processing.
		782
		783	=back
		784
		785	=head2 RENDITION
		786
		787	Rendition bitsets contain information about colour, font, font styles and
		788	similar information for each screen cell.
		789
		790	The following "macros" deal with changes in rendition sets. You should
		791	never just create a bitset, you should always modify an existing one,
		792	as they contain important information required for correct operation of
		793	rxvt-unicode.
		794
		795	=over 4
		796
		797	=item $rend = urxvt::DEFAULT_RSTYLE
		798
		799	Returns the default rendition, as used when the terminal is starting up or
		800	being reset. Useful as a base to start when creating renditions.
		801
		802	=item $rend = urxvt::OVERLAY_RSTYLE
		803
		804	Return the rendition mask used for overlays by default.
		805
		806	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
		807
		808	Return the bit that enabled bold, italic, blink, reverse-video and
		809	underline, respectively. To enable such a style, just logically OR it into
		810	the bitset.
		811
		812	=item $foreground = urxvt::GET_BASEFG $rend
		813
		814	=item $background = urxvt::GET_BASEBG $rend
		815
		816	Return the foreground/background colour index, respectively.
		817
		818	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
		819
		820	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		821
		822	=item $rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg
		823
		824	Replace the foreground/background colour in the rendition mask with the
		825	specified one.
		826
		827	=item $value = urxvt::GET_CUSTOM $rend
		828
		829	Return the "custom" value: Every rendition has 5 bits for use by
		830	extensions. They can be set and changed as you like and are initially
		831	zero.
		832
		833	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		834
		835	Change the custom value.
		836
		837	=back
		838
197	=cut	839	=cut
198		840
199	package urxvt;
200
201	use strict;
202
203	our $term;
204	our @HOOKNAME;
205	our $LIBDIR;
206
207	BEGIN {	841	BEGIN {
208	urxvt->bootstrap;
209
210	# overwrite perl's warn	842	# overwrite perl's warn
211	*CORE::GLOBAL::warn = sub {	843	*CORE::GLOBAL::warn = sub {
212	my $msg = join "", @_;	844	my $msg = join "", @_;
213	$msg .= "\n"	845	$msg .= "\n"
214	unless $msg =~ /\n$/;	846	unless $msg =~ /\n$/;
215	urxvt::warn ($msg);	847	urxvt::warn ($msg);
216	};	848	};
217	}	849	}
218		850
219	my @hook_count;	851	no warnings 'utf8';
		852
220	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	853	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
221		854
222	sub verbose {	855	sub verbose {
223	my ($level, $msg) = @_;	856	my ($level, $msg) = @_;
224	warn "$msg\n" if $level <= $verbosity;	857	warn "$msg\n" if $level <= $verbosity;
225	}	858	}
226		859
227	# find on_xxx subs in the package and register them	860	my %extension_pkg;
228	# as hooks
229	sub register_package($) {
230	my ($pkg) = @_;
231
232	for my $htype (0.. $#HOOKNAME) {
233	my $name = $HOOKNAME[$htype];
234
235	my $ref = $pkg->can ("on_" . lc $name)
236	or next;
237
238	$term->{_hook}[$htype]{$ref*1} = $ref;
239	$hook_count[$htype]++
240	or set_should_invoke $htype, 1;
241	}
242	}
243
244	my $script_pkg = "script0000";
245	my %script_pkg;
246		861
247	# load a single script into its own package, once only	862	# load a single script into its own package, once only
248	sub script_package($) {	863	sub extension_package($) {
249	my ($path) = @_;	864	my ($path) = @_;
250		865
251	$script_pkg{$path} ||= do {	866	$extension_pkg{$path} ||= do {
252	my $pkg = "urxvt::" . ($script_pkg++);	867	$path =~ /([^\/\\]+)$/;
		868	my $pkg = $1;
		869	$pkg =~ s/[^[:word:]]/_/g;
		870	$pkg = "urxvt::ext::$pkg";
253		871
254	verbose 3, "loading script '$path' into package '$pkg'";	872	verbose 3, "loading extension '$path' into package '$pkg'";
255		873
256	open my $fh, "<:raw", $path	874	open my $fh, "<:raw", $path
257	or die "$path: $!";	875	or die "$path: $!";
258		876
259	my $source = "package $pkg; use strict; use utf8;\n"	877	my $source =
		878	"package $pkg; use strict; use utf8; no warnings 'utf8';\n"
260	. "#line 1 \"$path\"\n{\n"	879	. "#line 1 \"$path\"\n{\n"
261	. (do { local $/; <$fh> })	880	. (do { local $/; <$fh> })
262	. "\n};\n1";	881	. "\n};\n1";
263		882
		883	eval $source
264	eval $source or die "$path: $@";	884	or die "$path: $@";
265		885
266	$pkg	886	$pkg
267	}	887	}
268	}	888	}
269		889
		890	our $retval; # return value for urxvt
		891
270	# called by the rxvt core	892	# called by the rxvt core
271	sub invoke {	893	sub invoke {
272	local $term = shift;	894	local $TERM = shift;
273	my $htype = shift;	895	my $htype = shift;
274		896
275	if ($htype == 0) { # INIT	897	if ($htype == 0) { # INIT
276	my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl");	898	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		899
		900	my %ext_arg;
277		901
278	for my $ext (split /:/, $term->resource ("perl_ext")) {	902	{
		903	my @init = @TERM_INIT;
		904	@TERM_INIT = ();
		905	$_->($TERM) for @init;
		906	my @pkg = @TERM_EXT;
		907	@TERM_EXT = ();
		908	$TERM->register_package ($_) for @pkg;
		909	}
		910
		911	for (grep $_, map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		912	if ($_ eq "default") {
		913	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback readline);
		914	} elsif (/^-(.*)$/) {
		915	delete $ext_arg{$1};
		916	} elsif (/^([^<]+)<(.*)>$/) {
		917	push @{ $ext_arg{$1} }, $2;
		918	} else {
		919	$ext_arg{$_} ||= [];
		920	}
		921	}
		922
		923	for my $ext (sort keys %ext_arg) {
279	my @files = grep -f $_, map "$_/$ext", @dirs;	924	my @files = grep -f $_, map "$_/$ext", @dirs;
280		925
281	if (@files) {	926	if (@files) {
282	register_package script_package $files[0];	927	$TERM->register_package (extension_package $files[0], $ext_arg{$ext});
283	} else {	928	} else {
284	warn "perl extension '$ext' not found in perl library search path\n";	929	warn "perl extension '$ext' not found in perl library search path\n";
285	}	930	}
286	}	931	}
287		932
288	} elsif ($htype == 1) { # DESTROY	933	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
289	if (my $hook = $term->{_hook}) {	934	warn $@ if $@;
290	for my $htype (0..$#$hook) {	935	}
291	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }	936
292	or set_should_invoke $htype, 0;	937	$retval = undef;
		938
		939	if (my $cb = $TERM->{_hook}[$htype]) {
		940	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		941	if $verbosity >= 10;
		942
		943	for my $pkg (keys %$cb) {
		944	my $retval_ = eval { $cb->{$pkg}->($TERM->{_pkg}{$pkg}, @_) };
		945	$retval ||= $retval_;
		946
		947	if ($@) {
		948	$TERM->ungrab; # better to lose the grab than the session
		949	warn $@;
293	}	950	}
294	}	951	}
		952
		953	verbose 11, "$HOOKNAME[$htype] returning <$retval>"
		954	if $verbosity >= 11;
295	}	955	}
296		956
297	my $cb = $term->{_hook}[$htype]	957	if ($htype == 1) { # DESTROY
298	or return;	958	# clear package objects
		959	%$_ = () for values %{ $TERM->{_pkg} };
299		960
300	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	961	# clear package
301	if $verbosity >= 10;	962	%$TERM = ();
302
303	while (my ($k, $v) = each %$cb) {
304	return 1 if $v->($term, @_);
305	}	963	}
306		964
		965	$retval
		966	}
		967
		968	sub SET_COLOR($$$) {
		969	SET_BGCOLOR (SET_FGCOLOR ($_[0], $_[1]), $_[2])
		970	}
		971
		972	# urxvt::term::extension
		973
		974	package urxvt::term::extension;
		975
		976	sub enable {
		977	my ($self, %hook) = @_;
		978	my $pkg = $self->{_pkg};
		979
		980	while (my ($name, $cb) = each %hook) {
		981	my $htype = $HOOKTYPE{uc $name};
		982	defined $htype
		983	or Carp::croak "unsupported hook type '$name'";
		984
		985	$self->set_should_invoke ($htype, +1)
		986	unless exists $self->{term}{_hook}[$htype]{$pkg};
		987
		988	$self->{term}{_hook}[$htype]{$pkg} = $cb;
307	0	989	}
308	}	990	}
309		991
310	=back	992	sub disable {
		993	my ($self, @hook) = @_;
		994	my $pkg = $self->{_pkg};
		995
		996	for my $name (@hook) {
		997	my $htype = $HOOKTYPE{uc $name};
		998	defined $htype
		999	or Carp::croak "unsupported hook type '$name'";
		1000
		1001	$self->set_should_invoke ($htype, -1)
		1002	if delete $self->{term}{_hook}[$htype]{$pkg};
		1003	}
		1004	}
		1005
		1006	our $AUTOLOAD;
		1007
		1008	sub AUTOLOAD {
		1009	$AUTOLOAD =~ /:([^:]+)$/
		1010	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		1011
		1012	eval qq{
		1013	sub $AUTOLOAD {
		1014	my \$proxy = shift;
		1015	\$proxy->{term}->$1 (\@_)
		1016	}
		1017	1
		1018	} or die "FATAL: unable to compile method forwarder: $@";
		1019
		1020	goto &$AUTOLOAD;
		1021	}
		1022
		1023	sub DESTROY {
		1024	# nop
		1025	}
		1026
		1027	# urxvt::destroy_hook
		1028
		1029	sub urxvt::destroy_hook::DESTROY {
		1030	${$_[0]}->();
		1031	}
		1032
		1033	sub urxvt::destroy_hook(&) {
		1034	bless \shift, urxvt::destroy_hook::
		1035	}
		1036
		1037	package urxvt::anyevent;
		1038
		1039	=head2 The C<urxvt::anyevent> Class
		1040
		1041	The sole purpose of this class is to deliver an interface to the
		1042	C<AnyEvent> module - any module using it will work inside urxvt without
		1043	further programming. The only exception is that you cannot wait on
		1044	condition variables, but non-blocking condvar use is ok. What this means
		1045	is that you cannot use blocking APIs, but the non-blocking variant should
		1046	work.
		1047
		1048	=cut
		1049
		1050	our $VERSION = 1;
		1051
		1052	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		1053	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		1054
		1055	sub timer {
		1056	my ($class, %arg) = @_;
		1057
		1058	my $cb = $arg{cb};
		1059
		1060	urxvt::timer
		1061	->new
		1062	->start (urxvt::NOW + $arg{after})
		1063	->cb (sub {
		1064	$_[0]->stop; # need to cancel manually
		1065	$cb->();
		1066	})
		1067	}
		1068
		1069	sub io {
		1070	my ($class, %arg) = @_;
		1071
		1072	my $cb = $arg{cb};
		1073
		1074	bless [$arg{fh}, urxvt::iow
		1075	->new
		1076	->fd (fileno $arg{fh})
		1077	->events (($arg{poll} =~ /r/ ? 1 : 0)
		1078	| ($arg{poll} =~ /w/ ? 2 : 0))
		1079	->start
		1080	->cb (sub {
		1081	$cb->(($_[1] & 1 ? 'r' : '')
		1082	. ($_[1] & 2 ? 'w' : ''));
		1083	})],
		1084	urxvt::anyevent::
		1085	}
		1086
		1087	sub DESTROY {
		1088	$_[0][1]->stop;
		1089	}
		1090
		1091	sub condvar {
		1092	bless \my $flag, urxvt::anyevent::condvar::
		1093	}
		1094
		1095	sub urxvt::anyevent::condvar::broadcast {
		1096	${$_[0]}++;
		1097	}
		1098
		1099	sub urxvt::anyevent::condvar::wait {
		1100	unless (${$_[0]}) {
		1101	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
		1102	}
		1103	}
		1104
		1105	package urxvt::term;
311		1106
312	=head2 The C<urxvt::term> Class	1107	=head2 The C<urxvt::term> Class
313		1108
314	=over 4	1109	=over 4
		1110
		1111	=cut
		1112
		1113	# find on_xxx subs in the package and register them
		1114	# as hooks
		1115	sub register_package {
		1116	my ($self, $pkg, $argv) = @_;
		1117
		1118	no strict 'refs';
		1119
		1120	urxvt::verbose 6, "register package $pkg to $self";
		1121
		1122	@{"$pkg\::ISA"} = urxvt::term::extension::;
		1123
		1124	my $proxy = bless {
		1125	_pkg => $pkg,
		1126	argv => $argv,
		1127	}, $pkg;
		1128	Scalar::Util::weaken ($proxy->{term} = $self);
		1129
		1130	$self->{_pkg}{$pkg} = $proxy;
		1131
		1132	for my $name (@HOOKNAME) {
		1133	if (my $ref = $pkg->can ("on_" . lc $name)) {
		1134	$proxy->enable ($name => $ref);
		1135	}
		1136	}
		1137	}
		1138
		1139	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		1140
		1141	Creates a new terminal, very similar as if you had started it with system
		1142	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		1143	hash which defines the environment of the new terminal.
		1144
		1145	Croaks (and probably outputs an error message) if the new instance
		1146	couldn't be created. Returns C<undef> if the new instance didn't
		1147	initialise perl, and the terminal object otherwise. The C<init> and
		1148	C<start> hooks will be called before this call returns, and are free to
		1149	refer to global data (which is race free).
		1150
		1151	=cut
		1152
		1153	sub new {
		1154	my ($class, $env, @args) = @_;
		1155
		1156	$env or Carp::croak "environment hash missing in call to urxvt::term->new";
		1157	@args or Carp::croak "name argument missing in call to urxvt::term->new";
		1158
		1159	_new ([ map "$_=$env->{$_}", keys %$env ], \@args);
		1160	}
		1161
		1162	=item $term->destroy
		1163
		1164	Destroy the terminal object (close the window, free resources
		1165	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		1166	watchers (timers, io watchers) are still active.
		1167
		1168	=item $term->exec_async ($cmd[, @args])
		1169
		1170	Works like the combination of the C<fork>/C<exec> builtins, which executes
		1171	("starts") programs in the background. This function takes care of setting
		1172	the user environment before exec'ing the command (e.g. C<PATH>) and should
		1173	be preferred over explicit calls to C<exec> or C<system>.
		1174
		1175	Returns the pid of the subprocess or C<undef> on error.
		1176
		1177	=cut
		1178
		1179	sub exec_async {
		1180	my $self = shift;
		1181
		1182	my $pid = fork;
		1183
		1184	return $pid
		1185	if !defined $pid or $pid;
		1186
		1187	%ENV = %{ $self->env };
		1188
		1189	exec @_;
		1190	urxvt::_exit 255;
		1191	}
		1192
		1193	=item $isset = $term->option ($optval[, $set])
		1194
		1195	Returns true if the option specified by C<$optval> is enabled, and
		1196	optionally change it. All option values are stored by name in the hash
		1197	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		1198
		1199	Here is a likely non-exhaustive list of option names, please see the
		1200	source file F</src/optinc.h> to see the actual list:
		1201
		1202	borderLess console cursorBlink cursorUnderline hold iconic insecure
		1203	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		1204	override-redirect pastableTabs pointerBlank reverseVideo scrollBar
		1205	scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
		1206	scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
		1207	transparent tripleclickwords utmpInhibit visualBell
315		1208
316	=item $value = $term->resource ($name[, $newval])	1209	=item $value = $term->resource ($name[, $newval])
317		1210
318	Returns the current resource value associated with a given name and	1211	Returns the current resource value associated with a given name and
319	optionally sets a new value. Setting values is most useful in the C<init>	1212	optionally sets a new value. Setting values is most useful in the C<init>
…		…
328	likely change).	1221	likely change).
329		1222
330	Please note that resource strings will currently only be freed when the	1223	Please note that resource strings will currently only be freed when the
331	terminal is destroyed, so changing options frequently will eat memory.	1224	terminal is destroyed, so changing options frequently will eat memory.
332		1225
333	Here is a a likely non-exhaustive list of resource names, not all of which	1226	Here is a likely non-exhaustive list of resource names, not all of which
334	are supported in every build, please see the source to see the actual	1227	are supported in every build, please see the source file F</src/rsinc.h>
335	list:	1228	to see the actual list:
336		1229
337	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	1230	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
338	borderLess color cursorBlink cursorUnderline cutchars delete_key	1231	borderLess color cursorBlink cursorUnderline cutchars delete_key
339	display_name embed ext_bwidth fade font geometry hold iconName	1232	display_name embed ext_bwidth fade font geometry hold iconName
340	imFont imLocale inputMethod insecure int_bwidth intensityStyles	1233	imFont imLocale inputMethod insecure int_bwidth intensityStyles
341	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	1234	italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
342	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext	1235	mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
343	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	1236	perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
344	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	1237	preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
345	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	1238	scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
346	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	1239	scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
347	shade term_name title transparent transparent_all tripleclickwords	1240	secondaryScreen secondaryScroll selectstyle shade term_name title
348	utmpInhibit visualBell	1241	transient_for transparent transparent_all tripleclickwords utmpInhibit
		1242	visualBell
349		1243
350	=cut	1244	=cut
351		1245
352	sub urxvt::term::resource($$;$) {	1246	sub resource($$;$) {
353	my ($self, $name) = (shift, shift);	1247	my ($self, $name) = (shift, shift);
354	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	1248	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
355	goto &urxvt::term::_resource;	1249	&urxvt::term::_resource
356	}	1250	}
		1251
		1252	=item $value = $term->x_resource ($pattern)
		1253
		1254	Returns the X-Resource for the given pattern, excluding the program or
		1255	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		1256	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		1257	resource with that pattern exists.
		1258
		1259	This method should only be called during the C<on_start> hook, as there is
		1260	only one resource database per display, and later invocations might return
		1261	the wrong resources.
		1262
		1263	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		1264
		1265	Adds a keymap translation exactly as specified via a resource. See the
		1266	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		1267
		1268	=item $rend = $term->rstyle ([$new_rstyle])
		1269
		1270	Return and optionally change the current rendition. Text that is output by
		1271	the terminal application will use this style.
		1272
		1273	=item ($row, $col) = $term->screen_cur ([$row, $col])
		1274
		1275	Return the current coordinates of the text cursor position and optionally
		1276	set it (which is usually bad as applications don't expect that).
357		1277
358	=item ($row, $col) = $term->selection_mark ([$row, $col])	1278	=item ($row, $col) = $term->selection_mark ([$row, $col])
359		1279
360	=item ($row, $col) = $term->selection_beg ([$row, $col])	1280	=item ($row, $col) = $term->selection_beg ([$row, $col])
361		1281
362	=item ($row, $col) = $term->selection_end ([$row, $col])	1282	=item ($row, $col) = $term->selection_end ([$row, $col])
363		1283
364	Return the current values of the selection mark, begin or end positions,	1284	Return the current values of the selection mark, begin or end positions,
365	and optionally set them to new values.	1285	and optionally set them to new values.
366		1286
		1287	=item $term->selection_make ($eventtime[, $rectangular])
		1288
		1289	Tries to make a selection as set by C<selection_beg> and
		1290	C<selection_end>. If C<$rectangular> is true (default: false), a
		1291	rectangular selection will be made. This is the prefered function to make
		1292	a selection.
		1293
367	=item $success = $term->selection_grab ($eventtime)	1294	=item $success = $term->selection_grab ($eventtime)
368		1295
369	Try to request the primary selection from the server (for example, as set	1296	Try to request the primary selection text from the server (for example, as
370	by the next method).	1297	set by the next method). No visual feedback will be given. This function
		1298	is mostly useful from within C<on_sel_grab> hooks.
371		1299
372	=item $oldtext = $term->selection ([$newtext])	1300	=item $oldtext = $term->selection ([$newtext])
373		1301
374	Return the current selection text and optionally replace it by C<$newtext>.	1302	Return the current selection text and optionally replace it by C<$newtext>.
375		1303
376	=item $term->scr_overlay ($x, $y, $text)	1304	=item $term->overlay_simple ($x, $y, $text)
377		1305
378	Create a simple multi-line overlay box. See the next method for details.	1306	Create a simple multi-line overlay box. See the next method for details.
379		1307
380	=cut	1308	=cut
381		1309
382	sub urxvt::term::scr_overlay {	1310	sub overlay_simple {
383	my ($self, $x, $y, $text) = @_;	1311	my ($self, $x, $y, $text) = @_;
384		1312
385	my @lines = split /\n/, $text;	1313	my @lines = split /\n/, $text;
386		1314
387	my $w = 0;	1315	my $w = List::Util::max map $self->strwidth ($_), @lines;
388	for (map $self->strwidth ($_), @lines) {
389	$w = $_ if $w < $_;
390	}
391		1316
392	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	1317	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
393	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	1318	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
394	}
395		1319
		1320	$overlay
		1321	}
		1322
396	=item $term->scr_overlay_new ($x, $y, $width, $height)	1323	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
397		1324
398	Create a new (empty) overlay at the given position with the given	1325	Create a new (empty) overlay at the given position with the given
399	width/height. A border will be put around the box. If either C<$x> or	1326	width/height. C<$rstyle> defines the initial rendition style
400	C<$y> is negative, then this is counted from the right/bottom side,	1327	(default: C<OVERLAY_RSTYLE>).
401	respectively.
402		1328
403	=item $term->scr_overlay_off	1329	If C<$border> is C<2> (default), then a decorative border will be put
		1330	around the box.
404		1331
405	Switch the overlay off again.	1332	If either C<$x> or C<$y> is negative, then this is counted from the
		1333	right/bottom side, respectively.
406		1334
407	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	1335	This method returns an urxvt::overlay object. The overlay will be visible
		1336	as long as the perl object is referenced.
408		1337
409	Put a single character (specified numerically) at the given overlay	1338	The methods currently supported on C<urxvt::overlay> objects are:
410	position.
411		1339
		1340	=over 4
		1341
412	=item $term->scr_overlay_set ($x, $y, $text)	1342	=item $overlay->set ($x, $y, $text, $rend)
413		1343
414	Write a string at the given position into the overlay.	1344	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		1345	text in rxvt-unicode's special encoding and an array of rendition values
		1346	at a specific position inside the overlay.
415		1347
		1348	=item $overlay->hide
		1349
		1350	If visible, hide the overlay, but do not destroy it.
		1351
		1352	=item $overlay->show
		1353
		1354	If hidden, display the overlay again.
		1355
		1356	=back
		1357
		1358	=item $popup = $term->popup ($event)
		1359
		1360	Creates a new C<urxvt::popup> object that implements a popup menu. The
		1361	C<$event> I<must> be the event causing the menu to pop up (a button event,
		1362	currently).
		1363
		1364	=cut
		1365
		1366	sub popup {
		1367	my ($self, $event) = @_;
		1368
		1369	$self->grab ($event->{time}, 1)
		1370	or return;
		1371
		1372	my $popup = bless {
		1373	term => $self,
		1374	event => $event,
		1375	}, urxvt::popup::;
		1376
		1377	Scalar::Util::weaken $popup->{term};
		1378
		1379	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		1380	Scalar::Util::weaken $self->{_destroy}{$popup};
		1381
		1382	$popup
		1383	}
		1384
416	=item $cellwidth = $term->strwidth $string	1385	=item $cellwidth = $term->strwidth ($string)
417		1386
418	Returns the number of screen-cells this string would need. Correctly	1387	Returns the number of screen-cells this string would need. Correctly
419	accounts for wide and combining characters.	1388	accounts for wide and combining characters.
420		1389
421	=item $octets = $term->locale_encode $string	1390	=item $octets = $term->locale_encode ($string)
422		1391
423	Convert the given text string into the corresponding locale encoding.	1392	Convert the given text string into the corresponding locale encoding.
424		1393
425	=item $string = $term->locale_decode $octets	1394	=item $string = $term->locale_decode ($octets)
426		1395
427	Convert the given locale-encoded octets into a perl string.	1396	Convert the given locale-encoded octets into a perl string.
		1397
		1398	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1399
		1400	XORs the rendition values in the given span with the provided value
		1401	(default: C<RS_RVid>), which I<MUST NOT> contain font styles. Useful in
		1402	refresh hooks to provide effects similar to the selection.
		1403
		1404	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1405
		1406	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1407	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1408	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1409	it instead. Both styles I<MUST NOT> contain font styles.
		1410
		1411	=item $term->scr_bell
		1412
		1413	Ring the bell!
		1414
		1415	=item $term->scr_add_lines ($string)
		1416
		1417	Write the given text string to the screen, as if output by the application
		1418	running inside the terminal. It may not contain command sequences (escape
		1419	codes), but is free to use line feeds, carriage returns and tabs. The
		1420	string is a normal text string, not in locale-dependent encoding.
		1421
		1422	Normally its not a good idea to use this function, as programs might be
		1423	confused by changes in cursor position or scrolling. Its useful inside a
		1424	C<on_add_lines> hook, though.
		1425
		1426	=item $term->scr_change_screen ($screen)
		1427
		1428	Switch to given screen - 0 primary, 1 secondary.
		1429
		1430	=item $term->cmd_parse ($octets)
		1431
		1432	Similar to C<scr_add_lines>, but the argument must be in the
		1433	locale-specific encoding of the terminal and can contain command sequences
		1434	(escape codes) that will be interpreted.
428		1435
429	=item $term->tt_write ($octets)	1436	=item $term->tt_write ($octets)
430		1437
431	Write the octets given in C<$data> to the tty (i.e. as program input). To	1438	Write the octets given in C<$data> to the tty (i.e. as program input). To
432	pass characters instead of octets, you should convert your strings first	1439	pass characters instead of octets, you should convert your strings first
433	to the locale-specific encoding using C<< $term->locale_encode >>.	1440	to the locale-specific encoding using C<< $term->locale_encode >>.
434		1441
		1442	=item $old_events = $term->pty_ev_events ([$new_events])
		1443
		1444	Replaces the event mask of the pty watcher by the given event mask. Can
		1445	be used to suppress input and output handling to the pty/tty. See the
		1446	description of C<< urxvt::timer->events >>. Make sure to always restore
		1447	the previous value.
		1448
		1449	=item $fd = $term->pty_fd
		1450
		1451	Returns the master file descriptor for the pty in use, or C<-1> if no pty
		1452	is used.
		1453
		1454	=item $windowid = $term->parent
		1455
		1456	Return the window id of the toplevel window.
		1457
		1458	=item $windowid = $term->vt
		1459
		1460	Return the window id of the terminal window.
		1461
		1462	=item $term->vt_emask_add ($x_event_mask)
		1463
		1464	Adds the specified events to the vt event mask. Useful e.g. when you want
		1465	to receive pointer events all the times:
		1466
		1467	$term->vt_emask_add (urxvt::PointerMotionMask);
		1468
		1469	=item $term->focus_in
		1470
		1471	=item $term->focus_out
		1472
		1473	=item $term->key_press ($state, $keycode[, $time])
		1474
		1475	=item $term->key_release ($state, $keycode[, $time])
		1476
		1477	Deliver various fake events to to terminal.
		1478
		1479	=item $window_width = $term->width
		1480
		1481	=item $window_height = $term->height
		1482
		1483	=item $font_width = $term->fwidth
		1484
		1485	=item $font_height = $term->fheight
		1486
		1487	=item $font_ascent = $term->fbase
		1488
435	=item $nrow = $term->nrow	1489	=item $terminal_rows = $term->nrow
436		1490
437	=item $ncol = $term->ncol	1491	=item $terminal_columns = $term->ncol
438		1492
439	Return the number of rows/columns of the terminal window (i.e. as	1493	=item $has_focus = $term->focus
440	specified by C<-geometry>, excluding any scrollback).
441		1494
		1495	=item $is_mapped = $term->mapped
		1496
		1497	=item $max_scrollback = $term->saveLines
		1498
		1499	=item $nrow_plus_saveLines = $term->total_rows
		1500
		1501	=item $topmost_scrollback_row = $term->top_row
		1502
		1503	Return various integers describing terminal characteristics.
		1504
		1505	=item $x_display = $term->display_id
		1506
		1507	Return the DISPLAY used by rxvt-unicode.
		1508
		1509	=item $lc_ctype = $term->locale
		1510
		1511	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1512
442	=item $nsaved = $term->nsaved	1513	=item $env = $term->env
443		1514
444	Returns the number of lines in the scrollback buffer.	1515	Returns a copy of the environment in effect for the terminal as a hashref
		1516	similar to C<\%ENV>.
		1517
		1518	=item @envv = $term->envv
		1519
		1520	Returns the environment as array of strings of the form C<VAR=VALUE>.
		1521
		1522	=item @argv = $term->argv
		1523
		1524	Return the argument vector as this terminal, similar to @ARGV, but
		1525	includes the program name as first element.
		1526
		1527	=cut
		1528
		1529	sub env {
		1530	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), $_[0]->envv }
		1531	}
		1532
		1533	=item $modifiermask = $term->ModLevel3Mask
		1534
		1535	=item $modifiermask = $term->ModMetaMask
		1536
		1537	=item $modifiermask = $term->ModNumLockMask
		1538
		1539	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1540	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1541
		1542	=item $screen = $term->current_screen
		1543
		1544	Returns the currently displayed screen (0 primary, 1 secondary).
		1545
		1546	=item $cursor_is_hidden = $term->hidden_cursor
		1547
		1548	Returns whether the cursor is currently hidden or not.
445		1549
446	=item $view_start = $term->view_start ([$newvalue])	1550	=item $view_start = $term->view_start ([$newvalue])
447		1551
448	Returns the negative row number of the topmost line. Minimum value is	1552	Returns the row number of the topmost displayed line. Maximum value is
449	C<0>, which displays the normal terminal contents. Larger values scroll	1553	C<0>, which displays the normal terminal contents. Lower values scroll
450	this many lines into the scrollback buffer.	1554	this many lines into the scrollback buffer.
451		1555
452	=item $term->want_refresh	1556	=item $term->want_refresh
453		1557
454	Requests a screen refresh. At the next opportunity, rxvt-unicode will	1558	Requests a screen refresh. At the next opportunity, rxvt-unicode will
…		…
460	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])	1564	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
461		1565
462	Returns the text of the entire row with number C<$row_number>. Row C<0>	1566	Returns the text of the entire row with number C<$row_number>. Row C<0>
463	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost	1567	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
464	terminal line. The scrollback buffer starts at line C<-1> and extends to	1568	terminal line. The scrollback buffer starts at line C<-1> and extends to
465	line C<< -$term->nsaved >>.	1569	line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
		1570	is requested.
466		1571
467	If C<$new_text> is specified, it will replace characters in the current	1572	If C<$new_text> is specified, it will replace characters in the current
468	line, starting at column C<$start_col> (default C<0>), which is useful	1573	line, starting at column C<$start_col> (default C<0>), which is useful
469	to replace only parts of a line. The font iindex in the rendition will	1574	to replace only parts of a line. The font index in the rendition will
470	automatically be updated.	1575	automatically be updated.
471		1576
472	C<$text> is in a special encoding: tabs and wide characters that use more	1577	C<$text> is in a special encoding: tabs and wide characters that use more
473	than one cell when displayed are padded with urxvt::NOCHAR characters	1578	than one cell when displayed are padded with C<$urxvt::NOCHAR> (chr 65535)
474	(C<chr 65535>). Characters with combining characters and other characters	1579	characters. Characters with combining characters and other characters that
475	that do not fit into the normal tetx encoding will be replaced with	1580	do not fit into the normal tetx encoding will be replaced with characters
476	characters in the private use area.	1581	in the private use area.
477		1582
478	You have to obey this encoding when changing text. The advantage is	1583	You have to obey this encoding when changing text. The advantage is
479	that C<substr> and similar functions work on screen cells and not on	1584	that C<substr> and similar functions work on screen cells and not on
480	characters.	1585	characters.
481		1586
…		…
488	bitsets. Rendition bitsets contain information about colour, font, font	1593	bitsets. Rendition bitsets contain information about colour, font, font
489	styles and similar information. See also C<< $term->ROW_t >>.	1594	styles and similar information. See also C<< $term->ROW_t >>.
490		1595
491	When setting rendition, the font mask will be ignored.	1596	When setting rendition, the font mask will be ignored.
492		1597
493	See the section on RENDITION, below.	1598	See the section on RENDITION, above.
494		1599
495	=item $length = $term->ROW_l ($row_number[, $new_length])	1600	=item $length = $term->ROW_l ($row_number[, $new_length])
496		1601
497	Returns the number of screen cells that are in use ("the line length"). If	1602	Returns the number of screen cells that are in use ("the line
498	it is C<-1>, then the line is part of a multiple-row logical "line", which	1603	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
499	means all characters are in use and it is continued on the next row.	1604	line is joined with the following one.
		1605
		1606	=item $bool = $term->is_longer ($row_number)
		1607
		1608	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1609	joined with the following row), which means all characters are in use
		1610	and it is continued on the next row (and possibly a continuation of the
		1611	previous row(s)).
		1612
		1613	=item $line = $term->line ($row_number)
		1614
		1615	Create and return a new C<urxvt::line> object that stores information
		1616	about the logical line that row C<$row_number> is part of. It supports the
		1617	following methods:
		1618
		1619	=over 4
		1620
		1621	=item $text = $line->t ([$new_text])
		1622
		1623	Returns or replaces the full text of the line, similar to C<ROW_t>
		1624
		1625	=item $rend = $line->r ([$new_rend])
		1626
		1627	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1628
		1629	=item $length = $line->l
		1630
		1631	Returns the length of the line in cells, similar to C<ROW_l>.
		1632
		1633	=item $rownum = $line->beg
		1634
		1635	=item $rownum = $line->end
		1636
		1637	Return the row number of the first/last row of the line, respectively.
		1638
		1639	=item $offset = $line->offset_of ($row, $col)
		1640
		1641	Returns the character offset of the given row|col pair within the logical
		1642	line. Works for rows outside the line, too, and returns corresponding
		1643	offsets outside the string.
		1644
		1645	=item ($row, $col) = $line->coord_of ($offset)
		1646
		1647	Translates a string offset into terminal coordinates again.
		1648
		1649	=back
		1650
		1651	=cut
		1652
		1653	sub line {
		1654	my ($self, $row) = @_;
		1655
		1656	my $maxrow = $self->nrow - 1;
		1657
		1658	my ($beg, $end) = ($row, $row);
		1659
		1660	--$beg while $self->ROW_is_longer ($beg - 1);
		1661	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1662
		1663	bless {
		1664	term => $self,
		1665	beg => $beg,
		1666	end => $end,
		1667	ncol => $self->ncol,
		1668	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1669	}, urxvt::line::
		1670	}
		1671
		1672	sub urxvt::line::t {
		1673	my ($self) = @_;
		1674
		1675	if (@_ > 1)
		1676	{
		1677	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1678	for $self->{beg} .. $self->{end};
		1679	}
		1680
		1681	defined wantarray &&
		1682	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1683	0, $self->{len}
		1684	}
		1685
		1686	sub urxvt::line::r {
		1687	my ($self) = @_;
		1688
		1689	if (@_ > 1)
		1690	{
		1691	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1692	for $self->{beg} .. $self->{end};
		1693	}
		1694
		1695	if (defined wantarray) {
		1696	my $rend = [
		1697	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1698	];
		1699	$#$rend = $self->{len} - 1;
		1700	return $rend;
		1701	}
		1702
		1703	()
		1704	}
		1705
		1706	sub urxvt::line::beg { $_[0]{beg} }
		1707	sub urxvt::line::end { $_[0]{end} }
		1708	sub urxvt::line::l { $_[0]{len} }
		1709
		1710	sub urxvt::line::offset_of {
		1711	my ($self, $row, $col) = @_;
		1712
		1713	($row - $self->{beg}) * $self->{ncol} + $col
		1714	}
		1715
		1716	sub urxvt::line::coord_of {
		1717	my ($self, $offset) = @_;
		1718
		1719	use integer;
		1720
		1721	(
		1722	$offset / $self->{ncol} + $self->{beg},
		1723	$offset % $self->{ncol}
		1724	)
		1725	}
500		1726
501	=item $text = $term->special_encode $string	1727	=item $text = $term->special_encode $string
502		1728
503	Converts a perl string into the special encoding used by rxvt-unicode,	1729	Converts a perl string into the special encoding used by rxvt-unicode,
504	where one character corresponds to one screen cell. See	1730	where one character corresponds to one screen cell. See
505	C<< $term->ROW_t >> for details.	1731	C<< $term->ROW_t >> for details.
506		1732
507	=item $string = $term->special_decode $text	1733	=item $string = $term->special_decode $text
508		1734
509	Converts rxvt-unicodes text reprsentation into a perl string. See	1735	Converts rxvt-unicodes text representation into a perl string. See
510	C<< $term->ROW_t >> for details.	1736	C<< $term->ROW_t >> for details.
511		1737
		1738	=item $success = $term->grab_button ($button, $modifiermask[, $window = $term->vt])
		1739
		1740	=item $term->ungrab_button ($button, $modifiermask[, $window = $term->vt])
		1741
		1742	Register/unregister a synchronous button grab. See the XGrabButton
		1743	manpage.
		1744
		1745	=item $success = $term->grab ($eventtime[, $sync])
		1746
		1747	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1748	synchronous (C<$sync> is true). Also remembers the grab timestamp.
		1749
		1750	=item $term->allow_events_async
		1751
		1752	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1753
		1754	=item $term->allow_events_sync
		1755
		1756	Calls XAllowEvents with SyncBoth for the most recent grab.
		1757
		1758	=item $term->allow_events_replay
		1759
		1760	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1761	recent grab.
		1762
		1763	=item $term->ungrab
		1764
		1765	Calls XUngrab for the most recent grab. Is called automatically on
		1766	evaluation errors, as it is better to lose the grab in the error case as
		1767	the session.
		1768
		1769	=item $atom = $term->XInternAtom ($atom_name[, $only_if_exists])
		1770
		1771	=item $atom_name = $term->XGetAtomName ($atom)
		1772
		1773	=item @atoms = $term->XListProperties ($window)
		1774
		1775	=item ($type,$format,$octets) = $term->XGetWindowProperty ($window, $property)
		1776
		1777	=item $term->XChangeWindowProperty ($window, $property, $type, $format, $octets)
		1778
		1779	=item $term->XDeleteProperty ($window, $property)
		1780
		1781	=item $window = $term->DefaultRootWindow
		1782
		1783	=item $term->XReparentWindow ($window, $parent, [$x, $y])
		1784
		1785	=item $term->XMapWindow ($window)
		1786
		1787	=item $term->XUnmapWindow ($window)
		1788
		1789	=item $term->XMoveResizeWindow ($window, $x, $y, $width, $height)
		1790
		1791	=item ($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x, $y)
		1792
		1793	=item $term->XChangeInput ($window, $add_events[, $del_events])
		1794
		1795	Various X or X-related functions. The C<$term> object only serves as
		1796	the source of the display, otherwise those functions map more-or-less
		1797	directory onto the X functions of the same name.
		1798
512	=back	1799	=back
513		1800
514	=head2 RENDITION	1801	=cut
515		1802
516	Rendition bitsets contain information about colour, font, font styles and	1803	package urxvt::popup;
517	similar information for each screen cell.
518		1804
519	The following "macros" deal with changes in rendition sets. You should	1805	=head2 The C<urxvt::popup> Class
520	never just create a bitset, you should always modify an existing one,
521	as they contain important information required for correct operation of
522	rxvt-unicode.
523		1806
524	=over 4	1807	=over 4
525		1808
526	=item $rend = urxvt::DEFAULT_RSTYLE	1809	=cut
527		1810
528	Returns the default rendition, as used when the terminal is starting up or	1811	sub add_item {
529	being reset. Useful as a base	1812	my ($self, $item) = @_;
		1813
		1814	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1815	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1816	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1817
		1818	$item->{render} ||= sub { $_[0]{text} };
		1819
		1820	push @{ $self->{item} }, $item;
		1821	}
		1822
		1823	=item $popup->add_title ($title)
		1824
		1825	Adds a non-clickable title to the popup.
		1826
		1827	=cut
		1828
		1829	sub add_title {
		1830	my ($self, $title) = @_;
		1831
		1832	$self->add_item ({
		1833	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1834	text => $title,
		1835	activate => sub { },
		1836	});
		1837	}
		1838
		1839	=item $popup->add_separator ([$sepchr])
		1840
		1841	Creates a separator, optionally using the character given as C<$sepchr>.
		1842
		1843	=cut
		1844
		1845	sub add_separator {
		1846	my ($self, $sep) = @_;
		1847
		1848	$sep ||= "=";
		1849
		1850	$self->add_item ({
		1851	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1852	text => "",
		1853	render => sub { $sep x $self->{term}->ncol },
		1854	activate => sub { },
		1855	});
		1856	}
		1857
		1858	=item $popup->add_button ($text, $cb)
		1859
		1860	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1861	selected.
		1862
		1863	=cut
		1864
		1865	sub add_button {
		1866	my ($self, $text, $cb) = @_;
		1867
		1868	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1869	}
		1870
		1871	=item $popup->add_toggle ($text, $initial_value, $cb)
		1872
		1873	Adds a toggle/checkbox item to the popup. The callback gets called
		1874	whenever it gets toggled, with a boolean indicating its new value as its
		1875	first argument.
		1876
		1877	=cut
		1878
		1879	sub add_toggle {
		1880	my ($self, $text, $value, $cb) = @_;
		1881
		1882	my $item; $item = {
		1883	type => "button",
		1884	text => " $text",
		1885	value => $value,
		1886	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1887	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1888	};
		1889
		1890	$self->add_item ($item);
		1891	}
		1892
		1893	=item $popup->show
		1894
		1895	Displays the popup (which is initially hidden).
		1896
		1897	=cut
		1898
		1899	sub show {
		1900	my ($self) = @_;
		1901
		1902	local $urxvt::popup::self = $self;
		1903
		1904	my $env = $self->{term}->env;
		1905	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1906	delete $env->{LC_ALL};
		1907	$env->{LC_CTYPE} = $self->{term}->locale;
		1908
		1909	urxvt::term->new ($env, "popup",
		1910	"--perl-lib" => "", "--perl-ext-common" => "",
		1911	"-pty-fd" => -1, "-sl" => 0,
		1912	"-b" => 1, "-bd" => "grey80", "-bl", "-override-redirect",
		1913	"--transient-for" => $self->{term}->parent,
		1914	"-display" => $self->{term}->display_id,
		1915	"-pe" => "urxvt-popup")
		1916	or die "unable to create popup window\n";
		1917	}
		1918
		1919	sub DESTROY {
		1920	my ($self) = @_;
		1921
		1922	delete $self->{term}{_destroy}{$self};
		1923	$self->{term}->ungrab;
		1924	}
530		1925
531	=back	1926	=back
532		1927
533	=cut	1928	=cut
		1929
		1930	package urxvt::watcher;
		1931
		1932	@urxvt::timer::ISA = __PACKAGE__;
		1933	@urxvt::iow::ISA = __PACKAGE__;
		1934	@urxvt::pw::ISA = __PACKAGE__;
		1935	@urxvt::iw::ISA = __PACKAGE__;
534		1936
535	=head2 The C<urxvt::timer> Class	1937	=head2 The C<urxvt::timer> Class
536		1938
537	This class implements timer watchers/events. Time is represented as a	1939	This class implements timer watchers/events. Time is represented as a
538	fractional number of seconds since the epoch. Example:	1940	fractional number of seconds since the epoch. Example:
539		1941
540	# create a digital clock display in upper right corner	1942	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
541	$term->{timer} = urxvt::timer	1943	$term->{timer} = urxvt::timer
542	->new	1944	->new
543	->start (urxvt::NOW)	1945	->interval (1)
544	->cb (sub {	1946	->cb (sub {
545	my ($timer) = @_;
546	my $time = $timer->at;
547	$timer->start ($time + 1);
548	$self->scr_overlay (-1, 0,	1947	$term->{overlay}->set (0, 0,
549	POSIX::strftime "%H:%M:%S", localtime $time);	1948	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
550	});	1949	});
551		1950
552	=over 4	1951	=over 4
553		1952
554	=item $timer = new urxvt::timer	1953	=item $timer = new urxvt::timer
555		1954
556	Create a new timer object in stopped state.	1955	Create a new timer object in started state. It is scheduled to fire
		1956	immediately.
557		1957
558	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	1958	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
559		1959
560	Set the callback to be called when the timer triggers.	1960	Set the callback to be called when the timer triggers.
561		1961
…		…
565		1965
566	=item $timer = $timer->set ($tstamp)	1966	=item $timer = $timer->set ($tstamp)
567		1967
568	Set the time the event is generated to $tstamp.	1968	Set the time the event is generated to $tstamp.
569		1969
		1970	=item $timer = $timer->interval ($interval)
		1971
		1972	Normally (and when C<$interval> is C<0>), the timer will automatically
		1973	stop after it has fired once. If C<$interval> is non-zero, then the timer
		1974	is automatically rescheduled at the given intervals.
		1975
570	=item $timer = $timer->start	1976	=item $timer = $timer->start
571		1977
572	Start the timer.	1978	Start the timer.
573		1979
574	=item $timer = $timer->start ($tstamp)	1980	=item $timer = $timer->start ($tstamp)
575		1981
576	Set the event trigger time to C<$tstamp> and start the timer.	1982	Set the event trigger time to C<$tstamp> and start the timer.
		1983
		1984	=item $timer = $timer->after ($delay)
		1985
		1986	Like C<start>, but sets the expiry timer to c<urxvt::NOW + $delay>.
577		1987
578	=item $timer = $timer->stop	1988	=item $timer = $timer->stop
579		1989
580	Stop the timer.	1990	Stop the timer.
581		1991
…		…
587		1997
588	$term->{socket} = ...	1998	$term->{socket} = ...
589	$term->{iow} = urxvt::iow	1999	$term->{iow} = urxvt::iow
590	->new	2000	->new
591	->fd (fileno $term->{socket})	2001	->fd (fileno $term->{socket})
592	->events (1) # wait for read data	2002	->events (urxvt::EVENT_READ)
593	->start	2003	->start
594	->cb (sub {	2004	->cb (sub {
595	my ($iow, $revents) = @_;	2005	my ($iow, $revents) = @_;
596	# $revents must be 1 here, no need to check	2006	# $revents must be 1 here, no need to check
597	sysread $term->{socket}, my $buf, 8192	2007	sysread $term->{socket}, my $buf, 8192
…		…
610	Set the callback to be called when io events are triggered. C<$reventmask>	2020	Set the callback to be called when io events are triggered. C<$reventmask>
611	is a bitset as described in the C<events> method.	2021	is a bitset as described in the C<events> method.
612		2022
613	=item $iow = $iow->fd ($fd)	2023	=item $iow = $iow->fd ($fd)
614		2024
615	Set the filedescriptor (not handle) to watch.	2025	Set the file descriptor (not handle) to watch.
616		2026
617	=item $iow = $iow->events ($eventmask)	2027	=item $iow = $iow->events ($eventmask)
618		2028
619	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	2029	Set the event mask to watch. The only allowed values are
620	data, Bit #1 (value C<2>) enables watching for write data.	2030	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		2031	together, or C<urxvt::EVENT_NONE>.
621		2032
622	=item $iow = $iow->start	2033	=item $iow = $iow->start
623		2034
624	Start watching for requested events on the given handle.	2035	Start watching for requested events on the given handle.
625		2036
626	=item $iow = $iow->stop	2037	=item $iow = $iow->stop
627		2038
628	Stop watching for events on the given filehandle.	2039	Stop watching for events on the given file handle.
		2040
		2041	=back
		2042
		2043	=head2 The C<urxvt::iw> Class
		2044
		2045	This class implements idle watchers, that get called automatically when
		2046	the process is idle. They should return as fast as possible, after doing
		2047	some useful work.
		2048
		2049	=over 4
		2050
		2051	=item $iw = new urxvt::iw
		2052
		2053	Create a new idle watcher object in stopped state.
		2054
		2055	=item $iw = $iw->cb (sub { my ($iw) = @_; ... })
		2056
		2057	Set the callback to be called when the watcher triggers.
		2058
		2059	=item $timer = $timer->start
		2060
		2061	Start the watcher.
		2062
		2063	=item $timer = $timer->stop
		2064
		2065	Stop the watcher.
		2066
		2067	=back
		2068
		2069	=head2 The C<urxvt::pw> Class
		2070
		2071	This class implements process watchers. They create an event whenever a
		2072	process exits, after which they stop automatically.
		2073
		2074	my $pid = fork;
		2075	...
		2076	$term->{pw} = urxvt::pw
		2077	->new
		2078	->start ($pid)
		2079	->cb (sub {
		2080	my ($pw, $exit_status) = @_;
		2081	...
		2082	});
		2083
		2084	=over 4
		2085
		2086	=item $pw = new urxvt::pw
		2087
		2088	Create a new process watcher in stopped state.
		2089
		2090	=item $pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
		2091
		2092	Set the callback to be called when the timer triggers.
		2093
		2094	=item $pw = $timer->start ($pid)
		2095
		2096	Tells the watcher to start watching for process C<$pid>.
		2097
		2098	=item $pw = $pw->stop
		2099
		2100	Stop the watcher.
629		2101
630	=back	2102	=back
631		2103
632	=head1 ENVIRONMENT	2104	=head1 ENVIRONMENT
633		2105
…		…
636	This variable controls the verbosity level of the perl extension. Higher	2108	This variable controls the verbosity level of the perl extension. Higher
637	numbers indicate more verbose output.	2109	numbers indicate more verbose output.
638		2110
639	=over 4	2111	=over 4
640		2112
641	=item 0 - only fatal messages	2113	=item == 0 - fatal messages
642		2114
643	=item 3 - script loading and management	2115	=item >= 3 - script loading and management
644		2116
645	=item 10 - all events received	2117	=item >=10 - all called hooks
		2118
		2119	=item >=11 - hook return values
646		2120
647	=back	2121	=back
648		2122
649	=head1 AUTHOR	2123	=head1 AUTHOR
650		2124

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