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Revision 1.10 by root, Mon Jan 2 20:47:52 2006 UTC vs.
Revision 1.79 by root, Wed Jan 11 02:13:56 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	Everytime 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	=over 4
		41
		42	=item selection (enabled by default)
		43
		44	(More) intelligent selection. This extension tries to be more intelligent
		45	when the user extends selections (double-click). Right now, it tries to
		46	select urls and complete shell-quoted arguments, which is very convenient,
		47	too, if your F<ls> supports C<--quoting-style=shell>.
		48
		49	It also offers the following bindable keyboard command:
		50
		51	=over 4
		52
		53	=item rot13
		54
		55	Rot-13 the selection when activated. Used via keyboard trigger:
		56
		57	URxvt.keysym.C-M-r: perl:selection:rot13
		58
		59	=back
		60
		61	=item option-popup (enabled by default)
		62
		63	Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
		64	runtime.
		65
		66	=item selection-popup (enabled by default)
		67
		68	Binds a popup menu to Ctrl-Button3 that lets you convert the selection
		69	text into various other formats/action (such as uri unescaping, perl
		70	evalution, web-browser starting etc.), depending on content.
		71
		72	=item searchable-scrollback<hotkey> (enabled by default)
		73
		74	Adds regex search functionality to the scrollback buffer, triggered
		75	by a hotkey (default: C<M-s>). When in search mode, normal terminal
		76	input/output is suspended.
		77
		78	C</> starts an incremental regex search, C<n> searches further, C<p> or
		79	C<N> jump to the previous match, C<G> jumps to the bottom and clears the
		80	history, C<enter> leaves search mode at the current position and C<escape>
		81	returns to the original position.
		82
		83	=item digital-clock
		84
		85	Displays a digital clock using the built-in overlay.
		86
		87	=item mark-urls
		88
		89	Uses per-line display filtering (C<on_line_update>) to underline urls and
		90	make them clickable. When clicked, the program specified in the resource
		91	C<urlLauncher> (default C<x-www-browser>) will be started.
		92
		93	=item block-graphics-to-ascii
		94
		95	A not very useful example of filtering all text output to the terminal,
		96	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		97	similar-looking ascii character.
		98
		99	=item example-refresh-hooks
		100
		101	Displays a very simple digital clock in the upper right corner of the
		102	window. Illustrates overwriting the refresh callbacks to create your own
		103	overlays or changes.
		104
		105	=back
		106
		107	=head1 API DOCUMENTATION
28		108
29	=head2 General API Considerations	109	=head2 General API Considerations
30		110
31	All objects (such as terminals, time watchers etc.) are typical	111	All objects (such as terminals, time watchers etc.) are typical
32	reference-to-hash objects. The hash can be used to store anything you	112	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	113	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	114	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
35	modified).	115	modified).
36		116
37	When objects are destroyed on the C++ side, the perl object hashes are	117	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	118	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	119	the like inside the terminal object so they get destroyed as soon as the
40	terminal is destroyed.	120	terminal is destroyed.
41		121
		122	Argument names also often indicate the type of a parameter. Here are some
		123	hints on what they mean:
		124
		125	=over 4
		126
		127	=item $text
		128
		129	Rxvt-unicodes special way of encoding text, where one "unicode" character
		130	always represents one screen cell. See L<ROW_t> for a discussion of this format.
		131
		132	=item $string
		133
		134	A perl text string, with an emphasis on I<text>. It can store all unicode
		135	characters and is to be distinguished with text encoded in a specific
		136	encoding (often locale-specific) and binary data.
		137
		138	=item $octets
		139
		140	Either binary data or - more common - a text string encoded in a
		141	locale-specific way.
		142
		143	=back
		144
		145	=head2 Extension Objects
		146
		147	Very perl extension is a perl class. A separate perl object is created
		148	for each terminal and each extension and passed as the first parameter to
		149	hooks. So extensions can use their C<$self> object without having to think
		150	about other extensions, with the exception of methods and members that
		151	begin with an underscore character C<_>: these are reserved for internal
		152	use.
		153
		154	Although it isn't a C<urxvt::term> object, you can call all methods of the
		155	C<urxvt::term> class on this object.
		156
		157	It has the following methods and data members:
		158
		159	=over 4
		160
		161	=item $urxvt_term = $self->{term}
		162
		163	Returns the C<urxvt::term> object associated with this instance of the
		164	extension. This member I<must not> be changed in any way.
		165
		166	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		167
		168	Dynamically enable the given hooks (named without the C<on_> prefix) for
		169	this extension, replacing any previous hook. This is useful when you want
		170	to overwrite time-critical hooks only temporarily.
		171
		172	=item $self->disable ($hook_name[, $hook_name..])
		173
		174	Dynamically disable the given hooks.
		175
		176	=back
		177
42	=head2 Hooks	178	=head2 Hooks
43		179
44	The following subroutines can be declared in loaded scripts, and will be called	180	The following subroutines can be declared in extension files, and will be
45	whenever the relevant event happens.	181	called whenever the relevant event happens.
46		182
		183	The first argument passed to them is an extension oject as described in
		184	the in the C<Extension Objects> section.
		185
47	All of them must return a boolean value. If it is true, then the event	186	B<All> of these hooks must return a boolean value. If it is true, then the
48	counts as being I<consumed>, and the invocation of other hooks is skipped,	187	event counts as being I<consumed>, and the invocation of other hooks is
49	and the relevant action might not be carried out by the C++ code.	188	skipped, and the relevant action might not be carried out by the C++ code.
50		189
51	When in doubt, return a false value (preferably C<()>).	190	I<< When in doubt, return a false value (preferably C<()>). >>
52		191
53	=over 4	192	=over 4
54		193
55	=item on_init $term	194	=item on_init $term
56		195
57	Called after a new terminal object has been initialized, but before	196	Called after a new terminal object has been initialized, but before
58	windows are created or the command gets run.	197	windows are created or the command gets run. Most methods are unsafe to
		198	call or deliver senseless data, as terminal size and other characteristics
		199	have not yet been determined. You can safely query and change resources,
		200	though.
59		201
60	=item on_reset $term	202	=item on_reset $term
61		203
62	Called after the screen is "reset" for any reason, such as resizing or	204	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	205	control sequences. Here is where you can react on changes to size-related
…		…
83	requested from the server. The selection text can be queried and changed	225	requested from the server. The selection text can be queried and changed
84	by calling C<< $term->selection >>.	226	by calling C<< $term->selection >>.
85		227
86	Returning a true value aborts selection grabbing. It will still be hilighted.	228	Returning a true value aborts selection grabbing. It will still be hilighted.
87		229
88	=item on_focus_in $term	230	=item on_sel_extend $term
89		231
90	Called whenever the window gets the keyboard focus, before urxvt does	232	Called whenever the user tries to extend the selection (e.g. with a double
91	focus in processing.	233	click) and is either supposed to return false (normal operation), or
92		234	should extend the selection itelf and return true to suppress the built-in
93	=item on_focus_out $term
94
95	Called wheneever the window loses keyboard focus, before urxvt does focus
96	out processing.	235	processing.
		236
		237	See the F<selection> example extension.
97		238
98	=item on_view_change $term, $offset	239	=item on_view_change $term, $offset
99		240
100	Called whenever the view offset changes, i..e the user or program	241	Called whenever the view offset changes, i..e the user or program
101	scrolls. Offset C<0> means display the normal terminal, positive values	242	scrolls. Offset C<0> means display the normal terminal, positive values
…		…
109		250
110	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	251	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	252	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
112	number of lines that will be in the scrollback buffer.	253	number of lines that will be in the scrollback buffer.
113		254
114	=item on_tty_activity $term *NYI*	255	=item on_osc_seq $term, $string
115		256
116	Called whenever the program(s) running in the urxvt window send output.	257	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		258	operating system command) is processed. Cursor position and other state
		259	information is up-to-date when this happens. For interoperability, the
		260	string should start with the extension name and a colon, to distinguish
		261	it from commands for other extensions, and this might be enforced in the
		262	future.
		263
		264	Be careful not ever to trust (in a security sense) the data you receive,
		265	as its source can not easily be controleld (e-mail content, messages from
		266	other users on the same system etc.).
		267
		268	=item on_add_lines $term, $string
		269
		270	Called whenever text is about to be output, with the text as argument. You
		271	can filter/change and output the text yourself by returning a true value
		272	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		273	might be very slow, however, as your hook is called for B<all> text being
		274	output.
		275
		276	=item on_tt_write $term, $octets
		277
		278	Called whenever some data is written to the tty/pty and can be used to
		279	suppress or filter tty input.
		280
		281	=item on_line_update $term, $row
		282
		283	Called whenever a line was updated or changed. Can be used to filter
		284	screen output (e.g. underline urls or other useless stuff). Only lines
		285	that are being shown will be filtered, and, due to performance reasons,
		286	not always immediately.
		287
		288	The row number is always the topmost row of the line if the line spans
		289	multiple rows.
		290
		291	Please note that, if you change the line, then the hook might get called
		292	later with the already-modified line (e.g. if unrelated parts change), so
		293	you cannot just toggle rendition bits, but only set them.
117		294
118	=item on_refresh_begin $term	295	=item on_refresh_begin $term
119		296
120	Called just before the screen gets redrawn. Can be used for overlay	297	Called just before the screen gets redrawn. Can be used for overlay
121	or similar effects by modify terminal contents in refresh_begin, and	298	or similar effects by modify terminal contents in refresh_begin, and
…		…
124		301
125	=item on_refresh_end $term	302	=item on_refresh_end $term
126		303
127	Called just after the screen gets redrawn. See C<on_refresh_begin>.	304	Called just after the screen gets redrawn. See C<on_refresh_begin>.
128		305
		306	=item on_keyboard_command $term, $string
		307
		308	Called whenever the user presses a key combination that has a
		309	C<perl:string> action bound to it (see description of the B<keysym>
		310	resource in the @@RXVT_NAME@@(1) manpage).
		311
		312	=item on_focus_in $term
		313
		314	Called whenever the window gets the keyboard focus, before rxvt-unicode
		315	does focus in processing.
		316
		317	=item on_focus_out $term
		318
		319	Called wheneever the window loses keyboard focus, before rxvt-unicode does
		320	focus out processing.
		321
		322	=item on_key_press $term, $event, $keysym, $octets
		323
		324	=item on_key_release $term, $event, $keysym
		325
		326	=item on_button_press $term, $event
		327
		328	=item on_button_release $term, $event
		329
		330	=item on_motion_notify $term, $event
		331
		332	=item on_map_notify $term, $event
		333
		334	=item on_unmap_notify $term, $event
		335
		336	Called whenever the corresponding X event is received for the terminal If
		337	the hook returns true, then the even will be ignored by rxvt-unicode.
		338
		339	The event is a hash with most values as named by Xlib (see the XEvent
		340	manpage), with the additional members C<row> and C<col>, which are the row
		341	and column under the mouse cursor.
		342
		343	C<on_key_press> additionally receives the string rxvt-unicode would
		344	output, if any, in locale-specific encoding.
		345
		346	subwindow.
		347
		348	=back
		349
		350	=cut
		351
		352	package urxvt;
		353
		354	use utf8;
		355	use strict;
		356	use Carp ();
		357	use Scalar::Util ();
		358	use List::Util ();
		359
		360	our $VERSION = 1;
		361	our $TERM;
		362	our @HOOKNAME;
		363	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		364	our %OPTION;
		365
		366	our $LIBDIR;
		367	our $RESNAME;
		368	our $RESCLASS;
		369	our $RXVTNAME;
		370
		371	=head2 Variables in the C<urxvt> Package
		372
		373	=over 4
		374
		375	=item $urxvt::LIBDIR
		376
		377	The rxvt-unicode library directory, where, among other things, the perl
		378	modules and scripts are stored.
		379
		380	=item $urxvt::RESCLASS, $urxvt::RESCLASS
		381
		382	The resource class and name rxvt-unicode uses to look up X resources.
		383
		384	=item $urxvt::RXVTNAME
		385
		386	The basename of the installed binaries, usually C<urxvt>.
		387
		388	=item $urxvt::TERM
		389
		390	The current terminal. This variable stores the current C<urxvt::term>
		391	object, whenever a callback/hook is executing.
		392
129	=back	393	=back
130		394
131	=head2 Functions in the C<urxvt> Package	395	=head2 Functions in the C<urxvt> Package
132		396
133	=over 4	397	=over 4
…		…
145	that calls this function.	409	that calls this function.
146		410
147	Using this function has the advantage that its output ends up in the	411	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.	412	correct place, e.g. on stderr of the connecting urxvtc client.
149		413
		414	Messages have a size limit of 1023 bytes currently.
		415
		416	=item $is_safe = urxvt::safe
		417
		418	Returns true when it is safe to do potentially unsafe things, such as
		419	evaluating perl code specified by the user. This is true when urxvt was
		420	started setuid or setgid.
		421
150	=item $time = urxvt::NOW	422	=item $time = urxvt::NOW
151		423
152	Returns the "current time" (as per the event loop).	424	Returns the "current time" (as per the event loop).
153		425
154	=cut	426	=item urxvt::CurrentTime
155		427
156	package urxvt;	428	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		429	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		430	Button4Mask, Button5Mask, AnyModifier
157		431
158	use strict;	432	Various constants for use in X calls and event processing.
159		433
160	our $term;	434	=back
161	our @HOOKNAME;	435
162	our $LIBDIR;	436	=head2 RENDITION
		437
		438	Rendition bitsets contain information about colour, font, font styles and
		439	similar information for each screen cell.
		440
		441	The following "macros" deal with changes in rendition sets. You should
		442	never just create a bitset, you should always modify an existing one,
		443	as they contain important information required for correct operation of
		444	rxvt-unicode.
		445
		446	=over 4
		447
		448	=item $rend = urxvt::DEFAULT_RSTYLE
		449
		450	Returns the default rendition, as used when the terminal is starting up or
		451	being reset. Useful as a base to start when creating renditions.
		452
		453	=item $rend = urxvt::OVERLAY_RSTYLE
		454
		455	Return the rendition mask used for overlays by default.
		456
		457	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
		458
		459	Return the bit that enabled bold, italic, blink, reverse-video and
		460	underline, respectively. To enable such a style, just logically OR it into
		461	the bitset.
		462
		463	=item $foreground = urxvt::GET_BASEFG $rend
		464
		465	=item $background = urxvt::GET_BASEBG $rend
		466
		467	Return the foreground/background colour index, respectively.
		468
		469	=item $rend = urxvt::SET_FGCOLOR $rend, $new_colour
		470
		471	=item $rend = urxvt::SET_BGCOLOR $rend, $new_colour
		472
		473	Replace the foreground/background colour in the rendition mask with the
		474	specified one.
		475
		476	=item $value = urxvt::GET_CUSTOM $rend
		477
		478	Return the "custom" value: Every rendition has 5 bits for use by
		479	extensions. They can be set and changed as you like and are initially
		480	zero.
		481
		482	=item $rend = urxvt::SET_CUSTOM $rend, $new_value
		483
		484	Change the custom value.
		485
		486	=back
		487
		488	=cut
163		489
164	BEGIN {	490	BEGIN {
165	urxvt->bootstrap;	491	urxvt->bootstrap;
166		492
167	# overwrite perl's warn	493	# overwrite perl's warn
…		…
169	my $msg = join "", @_;	495	my $msg = join "", @_;
170	$msg .= "\n"	496	$msg .= "\n"
171	unless $msg =~ /\n$/;	497	unless $msg =~ /\n$/;
172	urxvt::warn ($msg);	498	urxvt::warn ($msg);
173	};	499	};
		500
		501	delete $ENV{IFS};
		502	delete $ENV{CDPATH};
		503	delete $ENV{BASH_ENV};
		504	$ENV{PATH} = "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/opt/bin:/opt/sbin";
174	}	505	}
175		506
176	my @hook_count;	507	my @hook_count;
177	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	508	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
178		509
179	sub verbose {	510	sub verbose {
180	my ($level, $msg) = @_;	511	my ($level, $msg) = @_;
181	warn "$msg\n" if $level <= $verbosity;	512	warn "$msg\n" if $level <= $verbosity;
182	}	513	}
183		514
184	# find on_xxx subs in the package and register them	515	my $extension_pkg = "extension0000";
185	# as hooks	516	my %extension_pkg;
186	sub register_package($) {
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 $script_pkg = "script0000";
202	my %script_pkg;
203		517
204	# load a single script into its own package, once only	518	# load a single script into its own package, once only
205	sub script_package($) {	519	sub extension_package($) {
206	my ($path) = @_;	520	my ($path) = @_;
207		521
208	$script_pkg{$path} ||= do {	522	$extension_pkg{$path} ||= do {
209	my $pkg = "urxvt::" . ($script_pkg++);	523	my $pkg = "urxvt::" . ($extension_pkg++);
210		524
211	verbose 3, "loading script '$path' into package '$pkg'";	525	verbose 3, "loading extension '$path' into package '$pkg'";
212		526
213	open my $fh, "<:raw", $path	527	open my $fh, "<:raw", $path
214	or die "$path: $!";	528	or die "$path: $!";
215		529
		530	my $source = untaint
216	my $source = "package $pkg; use strict; use utf8;\n"	531	"package $pkg; use strict; use utf8;\n"
		532	. "use base urxvt::term::extension::;\n"
217	. "#line 1 \"$path\"\n{\n"	533	. "#line 1 \"$path\"\n{\n"
218	. (do { local $/; <$fh> })	534	. (do { local $/; <$fh> })
219	. "\n};\n1";	535	. "\n};\n1";
220		536
		537	eval $source
221	eval $source or die "$path: $@";	538	or die "$path: $@";
222		539
223	$pkg	540	$pkg
224	}	541	}
225	}	542	}
226		543
		544	our $retval; # return value for urxvt
		545
227	# called by the rxvt core	546	# called by the rxvt core
228	sub invoke {	547	sub invoke {
229	local $term = shift;	548	local $TERM = shift;
230	my $htype = shift;	549	my $htype = shift;
231		550
232	if ($htype == 0) { # INIT	551	if ($htype == 0) { # INIT
233	my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl");	552	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		553
		554	my %ext_arg;
234		555
235	for my $ext (split /:/, $term->resource ("perl_ext")) {	556	for (map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		557	if ($_ eq "default") {
		558	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback);
		559	} elsif (/^-(.*)$/) {
		560	delete $ext_arg{$1};
		561	} elsif (/^([^<]+)<(.*)>$/) {
		562	push @{ $ext_arg{$1} }, $2;
		563	} else {
		564	$ext_arg{$_} ||= [];
		565	}
		566	}
		567
		568	while (my ($ext, $argv) = each %ext_arg) {
236	my @files = grep -f $_, map "$_/$ext", @dirs;	569	my @files = grep -f $_, map "$_/$ext", @dirs;
237		570
238	if (@files) {	571	if (@files) {
239	register_package script_package $files[0];	572	$TERM->register_package (extension_package $files[0], $argv);
240	} else {	573	} else {
241	warn "perl extension '$ext' not found in perl library search path\n";	574	warn "perl extension '$ext' not found in perl library search path\n";
242	}	575	}
243	}	576	}
244		577
		578	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		579	warn $@ if $@;
		580	}
		581
		582	$retval = undef;
		583
		584	if (my $cb = $TERM->{_hook}[$htype]) {
		585	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		586	if $verbosity >= 10;
		587
		588	keys %$cb;
		589
		590	while (my ($pkg, $cb) = each %$cb) {
		591	$retval = eval { $cb->($TERM->{_pkg}{$pkg}, @_) }
		592	and last;
		593
		594	if ($@) {
		595	$TERM->ungrab; # better to lose the grab than the session
		596	warn $@;
		597	}
		598	}
		599	}
		600
245	} elsif ($htype == 1) { # DESTROY	601	if ($htype == 1) { # DESTROY
246	if (my $hook = $term->{_hook}) {	602	if (my $hook = delete $TERM->{_hook}) {
247	for my $htype (0..$#$hook) {	603	for my $htype (0..$#$hook) {
248	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }	604	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
249	or set_should_invoke $htype, 0;	605	or set_should_invoke $htype, 0;
250	}	606	}
251	}	607	}
		608
		609	# clear package objects
		610	%$_ = () for values %{ $TERM->{_pkg} };
		611
		612	# clear package
		613	%$TERM = ();
252	}	614	}
253		615
254	my $cb = $term->{_hook}[$htype]	616	$retval
255	or return;	617	}
256		618
257	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	619	# urxvt::term::extension
258	if $verbosity >= 10;
259		620
		621	package urxvt::term::extension;
		622
		623	sub enable {
		624	my ($self, %hook) = @_;
		625	my $pkg = $self->{_pkg};
		626
260	while (my ($k, $v) = each %$cb) {	627	while (my ($name, $cb) = each %hook) {
261	return 1 if $v->($term, @_);	628	my $htype = $HOOKTYPE{uc $name};
		629	defined $htype
		630	or Carp::croak "unsupported hook type '$name'";
		631
		632	unless (exists $self->{term}{_hook}[$htype]{$pkg}) {
		633	$hook_count[$htype]++
		634	or urxvt::set_should_invoke $htype, 1;
		635	}
		636
		637	$self->{term}{_hook}[$htype]{$pkg} = $cb;
262	}	638	}
		639	}
263		640
		641	sub disable {
		642	my ($self, @hook) = @_;
		643	my $pkg = $self->{_pkg};
		644
		645	for my $name (@hook) {
		646	my $htype = $HOOKTYPE{uc $name};
		647	defined $htype
		648	or Carp::croak "unsupported hook type '$name'";
		649
		650	if (delete $self->{term}{_hook}[$htype]{$pkg}) {
		651	--$hook_count[$htype]
		652	or urxvt::set_should_invoke $htype, 0;
		653	}
264	0	654	}
265	}	655	}
266		656
267	=back	657	our $AUTOLOAD;
		658
		659	sub AUTOLOAD {
		660	$AUTOLOAD =~ /:([^:]+)$/
		661	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		662
		663	eval qq{
		664	sub $AUTOLOAD {
		665	my \$proxy = shift;
		666	\$proxy->{term}->$1 (\@_)
		667	}
		668	1
		669	} or die "FATAL: unable to compile method forwarder: $@";
		670
		671	goto &$AUTOLOAD;
		672	}
		673
		674	sub DESTROY {
		675	# nop
		676	}
		677
		678	# urxvt::destroy_hook
		679
		680	sub urxvt::destroy_hook::DESTROY {
		681	${$_[0]}->();
		682	}
		683
		684	sub urxvt::destroy_hook(&) {
		685	bless \shift, urxvt::destroy_hook::
		686	}
		687
		688	package urxvt::anyevent;
		689
		690	=head2 The C<urxvt::anyevent> Class
		691
		692	The sole purpose of this class is to deliver an interface to the
		693	C<AnyEvent> module - any module using it will work inside urxvt without
		694	further programming. The only exception is that you cannot wait on
		695	condition variables, but non-blocking condvar use is ok. What this means
		696	is that you cannot use blocking APIs, but the non-blocking variant should
		697	work.
		698
		699	=cut
		700
		701	our $VERSION = 1;
		702
		703	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		704	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		705
		706	sub timer {
		707	my ($class, %arg) = @_;
		708
		709	my $cb = $arg{cb};
		710
		711	urxvt::timer
		712	->new
		713	->start (urxvt::NOW + $arg{after})
		714	->cb (sub {
		715	$_[0]->stop; # need to cancel manually
		716	$cb->();
		717	})
		718	}
		719
		720	sub io {
		721	my ($class, %arg) = @_;
		722
		723	my $cb = $arg{cb};
		724
		725	bless [$arg{fh}, urxvt::iow
		726	->new
		727	->fd (fileno $arg{fh})
		728	->events (($arg{poll} =~ /r/ ? 1 : 0)
		729	| ($arg{poll} =~ /w/ ? 2 : 0))
		730	->start
		731	->cb (sub {
		732	$cb->(($_[1] & 1 ? 'r' : '')
		733	. ($_[1] & 2 ? 'w' : ''));
		734	})],
		735	urxvt::anyevent::
		736	}
		737
		738	sub DESTROY {
		739	$_[0][1]->stop;
		740	}
		741
		742	sub condvar {
		743	bless \my $flag, urxvt::anyevent::condvar::
		744	}
		745
		746	sub urxvt::anyevent::condvar::broadcast {
		747	${$_[0]}++;
		748	}
		749
		750	sub urxvt::anyevent::condvar::wait {
		751	unless (${$_[0]}) {
		752	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
		753	}
		754	}
		755
		756	package urxvt::term;
268		757
269	=head2 The C<urxvt::term> Class	758	=head2 The C<urxvt::term> Class
270		759
271	=over 4	760	=over 4
		761
		762	=cut
		763
		764	# find on_xxx subs in the package and register them
		765	# as hooks
		766	sub register_package {
		767	my ($self, $pkg, $argv) = @_;
		768
		769	my $proxy = bless {
		770	_pkg => $pkg,
		771	argv => $argv,
		772	}, $pkg;
		773	Scalar::Util::weaken ($proxy->{term} = $self);
		774
		775	$self->{_pkg}{$pkg} = $proxy;
		776
		777	for my $name (@HOOKNAME) {
		778	if (my $ref = $pkg->can ("on_" . lc $name)) {
		779	$proxy->enable ($name => $ref);
		780	}
		781	}
		782	}
		783
		784	=item $term = new urxvt::term $envhashref, $rxvtname, [arg...]
		785
		786	Creates a new terminal, very similar as if you had started it with system
		787	C<$rxvtname, arg...>. C<$envhashref> must be a reference to a C<%ENV>-like
		788	hash which defines the environment of the new terminal.
		789
		790	Croaks (and probably outputs an error message) if the new instance
		791	couldn't be created. Returns C<undef> if the new instance didn't
		792	initialise perl, and the terminal object otherwise. The C<init> and
		793	C<start> hooks will be called during this call.
		794
		795	=cut
		796
		797	sub new {
		798	my ($class, $env, @args) = @_;
		799
		800	_new ([ map "$_=$env->{$_}", keys %$env ], @args);
		801	}
		802
		803	=item $term->destroy
		804
		805	Destroy the terminal object (close the window, free resources
		806	etc.). Please note that @@RXVT_NAME@@ will not exit as long as any event
		807	watchers (timers, io watchers) are still active.
		808
		809	=item $isset = $term->option ($optval[, $set])
		810
		811	Returns true if the option specified by C<$optval> is enabled, and
		812	optionally change it. All option values are stored by name in the hash
		813	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		814
		815	Here is a a likely non-exhaustive list of option names, please see the
		816	source file F</src/optinc.h> to see the actual list:
		817
		818	borderLess console cursorBlink cursorUnderline hold iconic insecure
		819	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		820	pastableTabs pointerBlank reverseVideo scrollBar scrollBar_floating
		821	scrollBar_right scrollTtyKeypress scrollTtyOutput scrollWithBuffer
		822	secondaryScreen secondaryScroll skipBuiltinGlyphs transparent
		823	tripleclickwords utmpInhibit visualBell
272		824
273	=item $value = $term->resource ($name[, $newval])	825	=item $value = $term->resource ($name[, $newval])
274		826
275	Returns the current resource value associated with a given name and	827	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>	828	optionally sets a new value. Setting values is most useful in the C<init>
…		…
286		838
287	Please note that resource strings will currently only be freed when the	839	Please note that resource strings will currently only be freed when the
288	terminal is destroyed, so changing options frequently will eat memory.	840	terminal is destroyed, so changing options frequently will eat memory.
289		841
290	Here is a a likely non-exhaustive list of resource names, not all of which	842	Here is a 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	843	are supported in every build, please see the source file F</src/rsinc.h>
292	list:	844	to see the actual list:
293		845
294	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	846	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
295	borderLess color cursorBlink cursorUnderline cutchars delete_key	847	borderLess color cursorBlink cursorUnderline cutchars delete_key
296	display_name embed ext_bwidth fade font geometry hold iconName	848	display_name embed ext_bwidth fade font geometry hold iconName
297	imFont imLocale inputMethod insecure int_bwidth intensityStyles	849	imFont imLocale inputMethod insecure int_bwidth intensityStyles
298	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	850	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
299	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext	851	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
300	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	852	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
301	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	853	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
302	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	854	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
303	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	855	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
304	shade term_name title transparent transparent_all tripleclickwords	856	shade term_name title transparent transparent_all tripleclickwords
305	utmpInhibit visualBell	857	utmpInhibit visualBell
306		858
307	=cut	859	=cut
308		860
309	sub urxvt::term::resource($$;$) {	861	sub resource($$;$) {
310	my ($self, $name) = (shift, shift);	862	my ($self, $name) = (shift, shift);
311	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	863	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
312	goto &urxvt::term::_resource;	864	&urxvt::term::_resource
313	}	865	}
		866
		867	=item $value = $term->x_resource ($pattern)
		868
		869	Returns the X-Resource for the given pattern, excluding the program or
		870	class name, i.e. C<< $term->x_resource ("boldFont") >> should return the
		871	same value as used by this instance of rxvt-unicode. Returns C<undef> if no
		872	resource with that pattern exists.
		873
		874	This method should only be called during the C<on_start> hook, as there is
		875	only one resource database per display, and later invocations might return
		876	the wrong resources.
		877
		878	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		879
		880	Adds a keymap translation exactly as specified via a resource. See the
		881	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		882
		883	=item $rend = $term->rstyle ([$new_rstyle])
		884
		885	Return and optionally change the current rendition. Text that is output by
		886	the terminal application will use this style.
		887
		888	=item ($row, $col) = $term->screen_cur ([$row, $col])
		889
		890	Return the current coordinates of the text cursor position and optionally
		891	set it (which is usually bad as applications don't expect that).
314		892
315	=item ($row, $col) = $term->selection_mark ([$row, $col])	893	=item ($row, $col) = $term->selection_mark ([$row, $col])
316		894
317	=item ($row, $col) = $term->selection_beg ([$row, $col])	895	=item ($row, $col) = $term->selection_beg ([$row, $col])
318		896
…		…
328		906
329	=item $oldtext = $term->selection ([$newtext])	907	=item $oldtext = $term->selection ([$newtext])
330		908
331	Return the current selection text and optionally replace it by C<$newtext>.	909	Return the current selection text and optionally replace it by C<$newtext>.
332		910
333	=item $term->scr_overlay ($x, $y, $text)	911	=item $term->overlay_simple ($x, $y, $text)
334		912
335	Create a simple multi-line overlay box. See the next method for details.	913	Create a simple multi-line overlay box. See the next method for details.
336		914
337	=cut	915	=cut
338		916
339	sub urxvt::term::scr_overlay {	917	sub overlay_simple {
340	my ($self, $x, $y, $text) = @_;	918	my ($self, $x, $y, $text) = @_;
341		919
342	my @lines = split /\n/, $text;	920	my @lines = split /\n/, $text;
343		921
344	my $w = 0;	922	my $w = List::Util::max map $self->strwidth ($_), @lines;
345	for (map $self->strwidth ($_), @lines) {
346	$w = $_ if $w < $_;
347	}
348		923
349	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	924	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
350	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	925	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
351	}
352		926
		927	$overlay
		928	}
		929
353	=item $term->scr_overlay_new ($x, $y, $width, $height)	930	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
354		931
355	Create a new (empty) overlay at the given position with the given	932	Create a new (empty) overlay at the given position with the given
356	width/height. A border will be put around the box. If either C<$x> or	933	width/height. C<$rstyle> defines the initial rendition style
357	C<$y> is negative, then this is counted from the right/bottom side,	934	(default: C<OVERLAY_RSTYLE>).
358	respectively.
359		935
360	=item $term->scr_overlay_off	936	If C<$border> is C<2> (default), then a decorative border will be put
		937	around the box.
361		938
362	Switch the overlay off again.	939	If either C<$x> or C<$y> is negative, then this is counted from the
		940	right/bottom side, respectively.
363		941
364	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	942	This method returns an urxvt::overlay object. The overlay will be visible
		943	as long as the perl object is referenced.
365		944
366	Put a single character (specified numerically) at the given overlay	945	The methods currently supported on C<urxvt::overlay> objects are:
367	position.
368		946
		947	=over 4
		948
369	=item $term->scr_overlay_set ($x, $y, $text)	949	=item $overlay->set ($x, $y, $text, $rend)
370		950
371	Write a string at the given position into the overlay.	951	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		952	text in rxvt-unicode's special encoding and an array of rendition values
		953	at a specific position inside the overlay.
372		954
		955	=item $overlay->hide
		956
		957	If visible, hide the overlay, but do not destroy it.
		958
		959	=item $overlay->show
		960
		961	If hidden, display the overlay again.
		962
		963	=back
		964
		965	=item $popup = $term->popup ($event)
		966
		967	Creates a new C<urxvt::popup> object that implements a popup menu. The
		968	C<$event> I<must> be the event causing the menu to pop up (a button event,
		969	currently).
		970
		971	=cut
		972
		973	sub popup {
		974	my ($self, $event) = @_;
		975
		976	$self->grab ($event->{time}, 1)
		977	or return;
		978
		979	my $popup = bless {
		980	term => $self,
		981	event => $event,
		982	}, urxvt::popup::;
		983
		984	Scalar::Util::weaken $popup->{term};
		985
		986	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		987	Scalar::Util::weaken $self->{_destroy}{$popup};
		988
		989	$popup
		990	}
		991
373	=item $cellwidth = $term->strwidth $string	992	=item $cellwidth = $term->strwidth ($string)
374		993
375	Returns the number of screen-cells this string would need. Correctly	994	Returns the number of screen-cells this string would need. Correctly
376	accounts for wide and combining characters.	995	accounts for wide and combining characters.
377		996
378	=item $octets = $term->locale_encode $string	997	=item $octets = $term->locale_encode ($string)
379		998
380	Convert the given text string into the corresponding locale encoding.	999	Convert the given text string into the corresponding locale encoding.
381		1000
382	=item $string = $term->locale_decode $octets	1001	=item $string = $term->locale_decode ($octets)
383		1002
384	Convert the given locale-encoded octets into a perl string.	1003	Convert the given locale-encoded octets into a perl string.
385		1004
		1005	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		1006
		1007	XORs the rendition values in the given span with the provided value
		1008	(default: C<RS_RVid>). Useful in refresh hooks to provide effects similar
		1009	to the selection.
		1010
		1011	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		1012
		1013	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		1014	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		1015	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		1016	it instead.
		1017
		1018	=item $term->scr_bell
		1019
		1020	Ring the bell!
		1021
		1022	=item $term->scr_add_lines ($string)
		1023
		1024	Write the given text string to the screen, as if output by the application
		1025	running inside the terminal. It may not contain command sequences (escape
		1026	codes), but is free to use line feeds, carriage returns and tabs. The
		1027	string is a normal text string, not in locale-dependent encoding.
		1028
		1029	Normally its not a good idea to use this function, as programs might be
		1030	confused by changes in cursor position or scrolling. Its useful inside a
		1031	C<on_add_lines> hook, though.
		1032
		1033	=item $term->cmd_parse ($octets)
		1034
		1035	Similar to C<scr_add_lines>, but the argument must be in the
		1036	locale-specific encoding of the terminal and can contain command sequences
		1037	(escape codes) that will be interpreted.
		1038
386	=item $term->tt_write ($octets)	1039	=item $term->tt_write ($octets)
387		1040
388	Write the octets given in C<$data> to the tty (i.e. as program input). To	1041	Write the octets given in C<$data> to the tty (i.e. as program input). To
389	pass characters instead of octets, you should convetr you strings first to	1042	pass characters instead of octets, you should convert your strings first
390	the locale-specific encoding using C<< $term->locale_encode >>.	1043	to the locale-specific encoding using C<< $term->locale_encode >>.
		1044
		1045	=item $old_events = $term->pty_ev_events ([$new_events])
		1046
		1047	Replaces the event mask of the pty watcher by the given event mask. Can
		1048	be used to suppress input and output handling to the pty/tty. See the
		1049	description of C<< urxvt::timer->events >>. Make sure to always restore
		1050	the previous value.
		1051
		1052	=item $windowid = $term->parent
		1053
		1054	Return the window id of the toplevel window.
		1055
		1056	=item $windowid = $term->vt
		1057
		1058	Return the window id of the terminal window.
		1059
		1060	=item $window_width = $term->width
		1061
		1062	=item $window_height = $term->height
		1063
		1064	=item $font_width = $term->fwidth
		1065
		1066	=item $font_height = $term->fheight
		1067
		1068	=item $font_ascent = $term->fbase
		1069
		1070	=item $terminal_rows = $term->nrow
		1071
		1072	=item $terminal_columns = $term->ncol
		1073
		1074	=item $has_focus = $term->focus
		1075
		1076	=item $is_mapped = $term->mapped
		1077
		1078	=item $max_scrollback = $term->saveLines
		1079
		1080	=item $nrow_plus_saveLines = $term->total_rows
		1081
		1082	=item $lines_in_scrollback = $term->nsaved
		1083
		1084	Return various integers describing terminal characteristics.
		1085
		1086	=item $x_display = $term->display_id
		1087
		1088	Return the DISPLAY used by rxvt-unicode.
		1089
		1090	=item $lc_ctype = $term->locale
		1091
		1092	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1093
		1094	=item $env = $term->env
		1095
		1096	Returns a copy of the environment in effect for the terminal as a hashref
		1097	similar to C<\%ENV>.
		1098
		1099	=cut
		1100
		1101	sub env {
		1102	if (my $env = $_[0]->_env) {
		1103	+{ map /^([^=]+)(?:=(.*))?$/s && ($1 => $2), @$env }
		1104	} else {
		1105	+{ %ENV }
		1106	}
		1107	}
		1108
		1109	=item $modifiermask = $term->ModLevel3Mask
		1110
		1111	=item $modifiermask = $term->ModMetaMask
		1112
		1113	=item $modifiermask = $term->ModNumLockMask
		1114
		1115	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1116	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1117
		1118	=item $view_start = $term->view_start ([$newvalue])
		1119
		1120	Returns the negative row number of the topmost line. Minimum value is
		1121	C<0>, which displays the normal terminal contents. Larger values scroll
		1122	this many lines into the scrollback buffer.
		1123
		1124	=item $term->want_refresh
		1125
		1126	Requests a screen refresh. At the next opportunity, rxvt-unicode will
		1127	compare the on-screen display with its stored representation. If they
		1128	differ, it redraws the differences.
		1129
		1130	Used after changing terminal contents to display them.
		1131
		1132	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
		1133
		1134	Returns the text of the entire row with number C<$row_number>. Row C<0>
		1135	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
		1136	terminal line. The scrollback buffer starts at line C<-1> and extends to
		1137	line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
		1138	is requested.
		1139
		1140	If C<$new_text> is specified, it will replace characters in the current
		1141	line, starting at column C<$start_col> (default C<0>), which is useful
		1142	to replace only parts of a line. The font index in the rendition will
		1143	automatically be updated.
		1144
		1145	C<$text> is in a special encoding: tabs and wide characters that use more
		1146	than one cell when displayed are padded with urxvt::NOCHAR characters
		1147	(C<chr 65535>). Characters with combining characters and other characters
		1148	that do not fit into the normal tetx encoding will be replaced with
		1149	characters in the private use area.
		1150
		1151	You have to obey this encoding when changing text. The advantage is
		1152	that C<substr> and similar functions work on screen cells and not on
		1153	characters.
		1154
		1155	The methods C<< $term->special_encode >> and C<< $term->special_decode >>
		1156	can be used to convert normal strings into this encoding and vice versa.
		1157
		1158	=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
		1159
		1160	Like C<< $term->ROW_t >>, but returns an arrayref with rendition
		1161	bitsets. Rendition bitsets contain information about colour, font, font
		1162	styles and similar information. See also C<< $term->ROW_t >>.
		1163
		1164	When setting rendition, the font mask will be ignored.
		1165
		1166	See the section on RENDITION, above.
		1167
		1168	=item $length = $term->ROW_l ($row_number[, $new_length])
		1169
		1170	Returns the number of screen cells that are in use ("the line
		1171	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
		1172	line is joined with the following one.
		1173
		1174	=item $bool = $term->is_longer ($row_number)
		1175
		1176	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1177	joined with the following row), which means all characters are in use
		1178	and it is continued on the next row (and possibly a continuation of the
		1179	previous row(s)).
		1180
		1181	=item $line = $term->line ($row_number)
		1182
		1183	Create and return a new C<urxvt::line> object that stores information
		1184	about the logical line that row C<$row_number> is part of. It supports the
		1185	following methods:
		1186
		1187	=over 4
		1188
		1189	=item $text = $line->t ([$new_text])
		1190
		1191	Returns or replaces the full text of the line, similar to C<ROW_t>
		1192
		1193	=item $rend = $line->r ([$new_rend])
		1194
		1195	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1196
		1197	=item $length = $line->l
		1198
		1199	Returns the length of the line in cells, similar to C<ROW_l>.
		1200
		1201	=item $rownum = $line->beg
		1202
		1203	=item $rownum = $line->end
		1204
		1205	Return the row number of the first/last row of the line, respectively.
		1206
		1207	=item $offset = $line->offset_of ($row, $col)
		1208
		1209	Returns the character offset of the given row|col pair within the logical
		1210	line.
		1211
		1212	=item ($row, $col) = $line->coord_of ($offset)
		1213
		1214	Translates a string offset into terminal coordinates again.
		1215
		1216	=back
		1217
		1218	=cut
		1219
		1220	sub line {
		1221	my ($self, $row) = @_;
		1222
		1223	my $maxrow = $self->nrow - 1;
		1224
		1225	my ($beg, $end) = ($row, $row);
		1226
		1227	--$beg while $self->ROW_is_longer ($beg - 1);
		1228	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1229
		1230	bless {
		1231	term => $self,
		1232	beg => $beg,
		1233	end => $end,
		1234	ncol => $self->ncol,
		1235	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1236	}, urxvt::line::
		1237	}
		1238
		1239	sub urxvt::line::t {
		1240	my ($self) = @_;
		1241
		1242	if (@_ > 1)
		1243	{
		1244	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1245	for $self->{beg} .. $self->{end};
		1246	}
		1247
		1248	defined wantarray &&
		1249	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1250	0, $self->{len}
		1251	}
		1252
		1253	sub urxvt::line::r {
		1254	my ($self) = @_;
		1255
		1256	if (@_ > 1)
		1257	{
		1258	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1259	for $self->{beg} .. $self->{end};
		1260	}
		1261
		1262	if (defined wantarray) {
		1263	my $rend = [
		1264	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1265	];
		1266	$#$rend = $self->{len} - 1;
		1267	return $rend;
		1268	}
		1269
		1270	()
		1271	}
		1272
		1273	sub urxvt::line::beg { $_[0]{beg} }
		1274	sub urxvt::line::end { $_[0]{end} }
		1275	sub urxvt::line::l { $_[0]{len} }
		1276
		1277	sub urxvt::line::offset_of {
		1278	my ($self, $row, $col) = @_;
		1279
		1280	($row - $self->{beg}) * $self->{ncol} + $col
		1281	}
		1282
		1283	sub urxvt::line::coord_of {
		1284	my ($self, $offset) = @_;
		1285
		1286	use integer;
		1287
		1288	(
		1289	$offset / $self->{ncol} + $self->{beg},
		1290	$offset % $self->{ncol}
		1291	)
		1292	}
		1293
		1294	=item $text = $term->special_encode $string
		1295
		1296	Converts a perl string into the special encoding used by rxvt-unicode,
		1297	where one character corresponds to one screen cell. See
		1298	C<< $term->ROW_t >> for details.
		1299
		1300	=item $string = $term->special_decode $text
		1301
		1302	Converts rxvt-unicodes text reprsentation into a perl string. See
		1303	C<< $term->ROW_t >> for details.
		1304
		1305	=item $success = $term->grab_button ($button, $modifiermask)
		1306
		1307	Registers a synchronous button grab. See the XGrabButton manpage.
		1308
		1309	=item $success = $term->grab ($eventtime[, $sync])
		1310
		1311	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1312	synchronous (C<$sync> is true). Also remembers the grab timestampe.
		1313
		1314	=item $term->allow_events_async
		1315
		1316	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1317
		1318	=item $term->allow_events_sync
		1319
		1320	Calls XAllowEvents with SyncBoth for the most recent grab.
		1321
		1322	=item $term->allow_events_replay
		1323
		1324	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1325	recent grab.
		1326
		1327	=item $term->ungrab
		1328
		1329	Calls XUngrab for the most recent grab. Is called automatically on
		1330	evaluation errors, as it is better to lose the grab in the error case as
		1331	the session.
		1332
		1333	=back
		1334
		1335	=cut
		1336
		1337	package urxvt::popup;
		1338
		1339	=head2 The C<urxvt::popup> Class
		1340
		1341	=over 4
		1342
		1343	=cut
		1344
		1345	sub add_item {
		1346	my ($self, $item) = @_;
		1347
		1348	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1349	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1350	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1351
		1352	$item->{render} ||= sub { $_[0]{text} };
		1353
		1354	push @{ $self->{item} }, $item;
		1355	}
		1356
		1357	=item $popup->add_title ($title)
		1358
		1359	Adds a non-clickable title to the popup.
		1360
		1361	=cut
		1362
		1363	sub add_title {
		1364	my ($self, $title) = @_;
		1365
		1366	$self->add_item ({
		1367	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1368	text => $title,
		1369	activate => sub { },
		1370	});
		1371	}
		1372
		1373	=item $popup->add_separator ([$sepchr])
		1374
		1375	Creates a separator, optionally using the character given as C<$sepchr>.
		1376
		1377	=cut
		1378
		1379	sub add_separator {
		1380	my ($self, $sep) = @_;
		1381
		1382	$sep ||= "=";
		1383
		1384	$self->add_item ({
		1385	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1386	text => "",
		1387	render => sub { $sep x $self->{term}->ncol },
		1388	activate => sub { },
		1389	});
		1390	}
		1391
		1392	=item $popup->add_button ($text, $cb)
		1393
		1394	Adds a clickable button to the popup. C<$cb> is called whenever it is
		1395	selected.
		1396
		1397	=cut
		1398
		1399	sub add_button {
		1400	my ($self, $text, $cb) = @_;
		1401
		1402	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1403	}
		1404
		1405	=item $popup->add_toggle ($text, $cb, $initial_value)
		1406
		1407	Adds a toggle/checkbox item to the popup. Teh callback gets called
		1408	whenever it gets toggled, with a boolean indicating its value as its first
		1409	argument.
		1410
		1411	=cut
		1412
		1413	sub add_toggle {
		1414	my ($self, $text, $cb, $value) = @_;
		1415
		1416	my $item; $item = {
		1417	type => "button",
		1418	text => " $text",
		1419	value => $value,
		1420	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1421	activate => sub { $cb->($_[1]{value} = !$_[1]{value}); },
		1422	};
		1423
		1424	$self->add_item ($item);
		1425	}
		1426
		1427	=item $popup->show
		1428
		1429	Displays the popup (which is initially hidden).
		1430
		1431	=cut
		1432
		1433	sub show {
		1434	my ($self) = @_;
		1435
		1436	local $urxvt::popup::self = $self;
		1437
		1438	my $env = $self->{term}->env;
		1439	# we can't hope to reproduce the locale algorithm, so nuke LC_ALL and set LC_CTYPE.
		1440	delete $env->{LC_ALL};
		1441	$env->{LC_CTYPE} = $self->{term}->locale;
		1442
		1443	urxvt::term->new ($env, $self->{term}->resource ("name"),
		1444	"--perl-lib" => "", "--perl-ext-common" => "", "-pty-fd" => -1, "-sl" => 0, "-b" => 0,
		1445	"--transient-for" => $self->{term}->parent,
		1446	"-display" => $self->{term}->display_id,
		1447	"-pe" => "urxvt-popup")
		1448	or die "unable to create popup window\n";
		1449	}
		1450
		1451	sub DESTROY {
		1452	my ($self) = @_;
		1453
		1454	delete $self->{term}{_destroy}{$self};
		1455	$self->{term}->ungrab;
		1456	}
391		1457
392	=back	1458	=back
393		1459
394	=head2 The C<urxvt::timer> Class	1460	=head2 The C<urxvt::timer> Class
395		1461
396	This class implements timer watchers/events. Time is represented as a	1462	This class implements timer watchers/events. Time is represented as a
397	fractional number of seconds since the epoch. Example:	1463	fractional number of seconds since the epoch. Example:
398		1464
399	# create a digital clock display in upper right corner	1465	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
400	$term->{timer} = urxvt::timer	1466	$term->{timer} = urxvt::timer
401	->new	1467	->new
402	->start (urxvt::NOW)	1468	->interval (1)
403	->cb (sub {	1469	->cb (sub {
404	my ($timer) = @_;
405	my $time = $timer->at;
406	$timer->start ($time + 1);
407	$self->scr_overlay (-1, 0,	1470	$term->{overlay}->set (0, 0,
408	POSIX::strftime "%H:%M:%S", localtime $time);	1471	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
409	});	1472	});
410		1473
411	=over 4	1474	=over 4
412		1475
413	=item $timer = new urxvt::timer	1476	=item $timer = new urxvt::timer
414		1477
415	Create a new timer object in stopped state.	1478	Create a new timer object in started state. It is scheduled to fire
		1479	immediately.
416		1480
417	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	1481	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
418		1482
419	Set the callback to be called when the timer triggers.	1483	Set the callback to be called when the timer triggers.
420		1484
…		…
423	Return the time this watcher will fire next.	1487	Return the time this watcher will fire next.
424		1488
425	=item $timer = $timer->set ($tstamp)	1489	=item $timer = $timer->set ($tstamp)
426		1490
427	Set the time the event is generated to $tstamp.	1491	Set the time the event is generated to $tstamp.
		1492
		1493	=item $timer = $timer->interval ($interval)
		1494
		1495	Normally (and when C<$interval> is C<0>), the timer will automatically
		1496	stop after it has fired once. If C<$interval> is non-zero, then the timer
		1497	is automatically rescheduled at the given intervals.
428		1498
429	=item $timer = $timer->start	1499	=item $timer = $timer->start
430		1500
431	Start the timer.	1501	Start the timer.
432		1502
…		…
446		1516
447	$term->{socket} = ...	1517	$term->{socket} = ...
448	$term->{iow} = urxvt::iow	1518	$term->{iow} = urxvt::iow
449	->new	1519	->new
450	->fd (fileno $term->{socket})	1520	->fd (fileno $term->{socket})
451	->events (1) # wait for read data	1521	->events (urxvt::EVENT_READ)
452	->start	1522	->start
453	->cb (sub {	1523	->cb (sub {
454	my ($iow, $revents) = @_;	1524	my ($iow, $revents) = @_;
455	# $revents must be 1 here, no need to check	1525	# $revents must be 1 here, no need to check
456	sysread $term->{socket}, my $buf, 8192	1526	sysread $term->{socket}, my $buf, 8192
…		…
473		1543
474	Set the filedescriptor (not handle) to watch.	1544	Set the filedescriptor (not handle) to watch.
475		1545
476	=item $iow = $iow->events ($eventmask)	1546	=item $iow = $iow->events ($eventmask)
477		1547
478	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	1548	Set the event mask to watch. The only allowed values are
479	data, Bit #1 (value C<2>) enables watching for write data.	1549	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		1550	together, or C<urxvt::EVENT_NONE>.
480		1551
481	=item $iow = $iow->start	1552	=item $iow = $iow->start
482		1553
483	Start watching for requested events on the given handle.	1554	Start watching for requested events on the given handle.
484		1555
…		…
495	This variable controls the verbosity level of the perl extension. Higher	1566	This variable controls the verbosity level of the perl extension. Higher
496	numbers indicate more verbose output.	1567	numbers indicate more verbose output.
497		1568
498	=over 4	1569	=over 4
499		1570
500	=item 0 - only fatal messages	1571	=item == 0 - fatal messages
501		1572
502	=item 3 - script loading and management	1573	=item >= 3 - script loading and management
503		1574
504	=item 10 - all events received	1575	=item >=10 - all events received
505		1576
506	=back	1577	=back
507		1578
508	=head1 AUTHOR	1579	=head1 AUTHOR
509		1580

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