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Revision 1.8 by root, Mon Jan 2 20:35:39 2006 UTC vs.
Revision 1.72 by root, Mon Jan 9 23:30:01 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	* Put your scripts into F<@@RXVT_LIBDIR@@/urxvt/perl-ext/>, they will be loaded automatically.	9	# create a file grab_test in $HOME:
8
9	* Scripts are evaluated in a 'use strict' and 'use utf8' environment, and
10	thus must be encoded as UTF-8.
11		10
12	sub on_sel_grab {	11	sub on_sel_grab {
13	warn "you selected ", $_[0]->selection;	12	warn "you selected ", $_[0]->selection;
14	()	13	()
15	}	14	}
16		15
17	1	16	# start a @@RXVT_NAME@@ using it:
		17
		18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
18		19
19	=head1 DESCRIPTION	20	=head1 DESCRIPTION
20		21
21	Everytime a terminal object gets created, scripts specified via the	22	Everytime a terminal object gets created, extension scripts specified via
22	C<perl> resource are associated with it.	23	the C<perl> resource are loaded and associated with it.
		24
		25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
		26	thus must be encoded as UTF-8.
23		27
24	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
25	scripts will be shared (But not enabled) for all terminals.	29	scripts will be shared (but not enabled) for all terminals.
		30
		31	=head2 Prepackaged Extensions
		32
		33	This section describes the extensiosn delivered with this version. 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	Intelligent selection. This extension tries to be more intelligent when
		45	the user extends selections (double-click). Right now, it tries to select
		46	urls and complete shell-quoted arguments, which is very convenient, too,
		47	if your F<ls> supports C<--quoting-style=shell>.
		48
		49	It also offers the following bindable event:
		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.
		70
		71	=item searchable-scrollback (enabled by default)
		72
		73	Adds regex search functionality to the scrollback buffer, triggered by a
		74	hotkey (default: C<M-s>). When in search mode, terminal input/output is
		75	suspended, C</> starts an incremental regex search, C<n> searches further,
		76	C<p> jumps to the previous match. C<enter> leaves search mode at the
		77	current position and C<escape> returns to the original position.
		78
		79	=item digital-clock
		80
		81	Displays a digital clock using the built-in overlay.
		82
		83	=item mark-urls
		84
		85	Uses per-line display filtering (C<on_line_update>) to underline urls.
		86
		87	=item block-graphics-to-ascii
		88
		89	A not very useful example of filtering all text output to the terminal,
		90	by replacing all line-drawing characters (U+2500 .. U+259F) by a
		91	similar-looking ascii character.
		92
		93	=item example-refresh-hooks
		94
		95	Displays a very simple digital clock in the upper right corner of the
		96	window. Illustrates overwriting the refresh callbacks to create your own
		97	overlays or changes.
		98
		99	=back
26		100
27	=head2 General API Considerations	101	=head2 General API Considerations
28		102
29	All objects (such as terminals, time watchers etc.) are typical	103	All objects (such as terminals, time watchers etc.) are typical
30	reference-to-hash objects. The hash can be used to store anything you	104	reference-to-hash objects. The hash can be used to store anything you
31	like. All members starting with an underscore (such as C<_ptr> or	105	like. All members starting with an underscore (such as C<_ptr> or
32	C<_hook>) are reserved for internal uses and must not be accessed or	106	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
33	modified).	107	modified).
34		108
35	When objects are destroyed on the C++ side, the perl object hashes are	109	When objects are destroyed on the C++ side, the perl object hashes are
36	emptied, so its best to store related objects such as time watchers and	110	emptied, so its best to store related objects such as time watchers and
37	the like inside the terminal object so they get destroyed as soon as the	111	the like inside the terminal object so they get destroyed as soon as the
38	terminal is destroyed.	112	terminal is destroyed.
39		113
		114	Argument names also often indicate the type of a parameter. Here are some
		115	hints on what they mean:
		116
		117	=over 4
		118
		119	=item $text
		120
		121	Rxvt-unicodes special way of encoding text, where one "unicode" character
		122	always represents one screen cell. See L<row_t> for a discussion of this format.
		123
		124	=item $string
		125
		126	A perl text string, with an emphasis on I<text>. It can store all unicode
		127	characters and is to be distinguished with text encoded in a specific
		128	encoding (often locale-specific) and binary data.
		129
		130	=item $octets
		131
		132	Either binary data or - more common - a text string encoded in a
		133	locale-specific way.
		134
		135	=back
		136
		137	=head2 Extension Objects
		138
		139	Very perl extension is a perl class. A separate perl object is created
		140	for each terminal and each extension and passed as the first parameter to
		141	hooks. So extensions can use their C<$self> object without having to think
		142	about other extensions, with the exception of methods and members that
		143	begin with an underscore character C<_>: these are reserved for internal
		144	use.
		145
		146	Although it isn't a C<urxvt::term> object, you can call all methods of the
		147	C<urxvt::term> class on this object.
		148
		149	It has the following methods and data members:
		150
		151	=over 4
		152
		153	=item $urxvt_term = $self->{term}
		154
		155	Returns the C<urxvt::term> object associated with this instance of the
		156	extension. This member I<must not> be changed in any way.
		157
		158	=item $self->enable ($hook_name => $cb, [$hook_name => $cb..])
		159
		160	Dynamically enable the given hooks (named without the C<on_> prefix) for
		161	this extension, replacing any previous hook. This is useful when you want
		162	to overwrite time-critical hooks only temporarily.
		163
		164	=item $self->disable ($hook_name[, $hook_name..])
		165
		166	Dynamically disable the given hooks.
		167
		168	=back
		169
40	=head2 Hooks	170	=head2 Hooks
41		171
42	The following subroutines can be declared in loaded scripts, and will be called	172	The following subroutines can be declared in extension files, and will be
43	whenever the relevant event happens.	173	called whenever the relevant event happens.
44		174
		175	The first argument passed to them is an extension oject as described in
		176	the in the C<Extension Objects> section.
		177
45	All of them must return a boolean value. If it is true, then the event	178	B<All> of these hooks must return a boolean value. If it is true, then the
46	counts as being I<consumed>, and the invocation of other hooks is skipped,	179	event counts as being I<consumed>, and the invocation of other hooks is
47	and the relevant action might not be carried out by the C++ code.	180	skipped, and the relevant action might not be carried out by the C++ code.
48		181
49	When in doubt, return a false value (preferably C<()>).	182	I<< When in doubt, return a false value (preferably C<()>). >>
50		183
51	=over 4	184	=over 4
52		185
53	=item on_init $term	186	=item on_init $term
54		187
55	Called after a new terminal object has been initialized, but before	188	Called after a new terminal object has been initialized, but before
56	windows are created or the command gets run.	189	windows are created or the command gets run. Most methods are unsafe to
		190	call or deliver senseless data, as terminal size and other characteristics
		191	have not yet been determined. You can safely query and change resources,
		192	though.
57		193
58	=item on_reset $term	194	=item on_reset $term
59		195
60	Called after the screen is "reset" for any reason, such as resizing or	196	Called after the screen is "reset" for any reason, such as resizing or
61	control sequences. Here is where you can react on changes to size-related	197	control sequences. Here is where you can react on changes to size-related
…		…
81	requested from the server. The selection text can be queried and changed	217	requested from the server. The selection text can be queried and changed
82	by calling C<< $term->selection >>.	218	by calling C<< $term->selection >>.
83		219
84	Returning a true value aborts selection grabbing. It will still be hilighted.	220	Returning a true value aborts selection grabbing. It will still be hilighted.
85		221
86	=item on_focus_in $term	222	=item on_sel_extend $term
87		223
88	Called whenever the window gets the keyboard focus, before urxvt does	224	Called whenever the user tries to extend the selection (e.g. with a double
89	focus in processing.	225	click) and is either supposed to return false (normal operation), or
90		226	should extend the selection itelf and return true to suppress the built-in
91	=item on_focus_out $term
92
93	Called wheneever the window loses keyboard focus, before urxvt does focus
94	out processing.	227	processing.
		228
		229	See the F<selection> example extension.
95		230
96	=item on_view_change $term, $offset	231	=item on_view_change $term, $offset
97		232
98	Called whenever the view offset changes, i..e the user or program	233	Called whenever the view offset changes, i..e the user or program
99	scrolls. Offset C<0> means display the normal terminal, positive values	234	scrolls. Offset C<0> means display the normal terminal, positive values
…		…
107		242
108	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,	243	It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
109	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total	244	$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
110	number of lines that will be in the scrollback buffer.	245	number of lines that will be in the scrollback buffer.
111		246
112	=item on_tty_activity $term *NYI*	247	=item on_osc_seq $term, $string
113		248
114	Called whenever the program(s) running in the urxvt window send output.	249	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		250	operating system command) is processed. Cursor position and other state
		251	information is up-to-date when this happens. For interoperability, the
		252	string should start with the extension name and a colon, to distinguish
		253	it from commands for other extensions, and this might be enforced in the
		254	future.
		255
		256	Be careful not ever to trust (in a security sense) the data you receive,
		257	as its source can not easily be controleld (e-mail content, messages from
		258	other users on the same system etc.).
		259
		260	=item on_add_lines $term, $string
		261
		262	Called whenever text is about to be output, with the text as argument. You
		263	can filter/change and output the text yourself by returning a true value
		264	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		265	might be very slow, however, as your hook is called for B<all> text being
		266	output.
		267
		268	=item on_tt_write $term, $octets
		269
		270	Called whenever some data is written to the tty/pty and can be used to
		271	suppress or filter tty input.
		272
		273	=item on_line_update $term, $row
		274
		275	Called whenever a line was updated or changed. Can be used to filter
		276	screen output (e.g. underline urls or other useless stuff). Only lines
		277	that are being shown will be filtered, and, due to performance reasons,
		278	not always immediately.
		279
		280	The row number is always the topmost row of the line if the line spans
		281	multiple rows.
		282
		283	Please note that, if you change the line, then the hook might get called
		284	later with the already-modified line (e.g. if unrelated parts change), so
		285	you cannot just toggle rendition bits, but only set them.
115		286
116	=item on_refresh_begin $term	287	=item on_refresh_begin $term
117		288
118	Called just before the screen gets redrawn. Can be used for overlay	289	Called just before the screen gets redrawn. Can be used for overlay
119	or similar effects by modify terminal contents in refresh_begin, and	290	or similar effects by modify terminal contents in refresh_begin, and
…		…
122		293
123	=item on_refresh_end $term	294	=item on_refresh_end $term
124		295
125	Called just after the screen gets redrawn. See C<on_refresh_begin>.	296	Called just after the screen gets redrawn. See C<on_refresh_begin>.
126		297
		298	=item on_keyboard_command $term, $string
		299
		300	Called whenever the user presses a key combination that has a
		301	C<perl:string> action bound to it (see description of the B<keysym>
		302	resource in the @@RXVT_NAME@@(1) manpage).
		303
		304	=item on_focus_in $term
		305
		306	Called whenever the window gets the keyboard focus, before rxvt-unicode
		307	does focus in processing.
		308
		309	=item on_focus_out $term
		310
		311	Called wheneever the window loses keyboard focus, before rxvt-unicode does
		312	focus out processing.
		313
		314	=item on_key_press $term, $event, $keysym, $octets
		315
		316	=item on_key_release $term, $event, $keysym
		317
		318	=item on_button_press $term, $event
		319
		320	=item on_button_release $term, $event
		321
		322	=item on_motion_notify $term, $event
		323
		324	=item on_map_notify $term, $event
		325
		326	=item on_unmap_notify $term, $event
		327
		328	Called whenever the corresponding X event is received for the terminal If
		329	the hook returns true, then the even will be ignored by rxvt-unicode.
		330
		331	The event is a hash with most values as named by Xlib (see the XEvent
		332	manpage), with the additional members C<row> and C<col>, which are the row
		333	and column under the mouse cursor.
		334
		335	C<on_key_press> additionally receives the string rxvt-unicode would
		336	output, if any, in locale-specific encoding.
		337
		338	subwindow.
		339
127	=back	340	=back
128		341
		342	=head2 Variables in the C<urxvt> Package
		343
		344	=over 4
		345
		346	=item $urxvt::TERM
		347
		348	The current terminal. This variable stores the current C<urxvt::term>
		349	object, whenever a callback/hook is executing.
		350
		351	=back
		352
129	=head2 Functions in the C<urxvt> Package	353	=head2 Functions in the C<urxvt> Package
130		354
131	=over 4	355	=over 4
		356
		357	=item $term = new urxvt [arg...]
		358
		359	Creates a new terminal, very similar as if you had started it with
		360	C<system $binfile, arg...>. Croaks (and probably outputs an error message)
		361	if the new instance couldn't be created. Returns C<undef> if the new
		362	instance didn't initialise perl, and the terminal object otherwise. The
		363	C<init> and C<start> hooks will be called during the call.
132		364
133	=item urxvt::fatal $errormessage	365	=item urxvt::fatal $errormessage
134		366
135	Fatally aborts execution with the given error message. Avoid at all	367	Fatally aborts execution with the given error message. Avoid at all
136	costs! The only time this is acceptable is when the terminal process	368	costs! The only time this is acceptable is when the terminal process
…		…
143	that calls this function.	375	that calls this function.
144		376
145	Using this function has the advantage that its output ends up in the	377	Using this function has the advantage that its output ends up in the
146	correct place, e.g. on stderr of the connecting urxvtc client.	378	correct place, e.g. on stderr of the connecting urxvtc client.
147		379
		380	=item $is_safe = urxvt::safe
		381
		382	Returns true when it is safe to do potentially unsafe things, such as
		383	evaluating perl code specified by the user. This is true when urxvt was
		384	started setuid or setgid.
		385
148	=item $time = urxvt::NOW	386	=item $time = urxvt::NOW
149		387
150	Returns the "current time" (as per the event loop).	388	Returns the "current time" (as per the event loop).
151		389
		390	=item urxvt::CurrentTime
		391
		392	=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
		393	Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
		394	Button4Mask, Button5Mask, AnyModifier
		395
		396	Various constants for use in X calls and event processing.
		397
		398	=back
		399
		400	=head2 RENDITION
		401
		402	Rendition bitsets contain information about colour, font, font styles and
		403	similar information for each screen cell.
		404
		405	The following "macros" deal with changes in rendition sets. You should
		406	never just create a bitset, you should always modify an existing one,
		407	as they contain important information required for correct operation of
		408	rxvt-unicode.
		409
		410	=over 4
		411
		412	=item $rend = urxvt::DEFAULT_RSTYLE
		413
		414	Returns the default rendition, as used when the terminal is starting up or
		415	being reset. Useful as a base to start when creating renditions.
		416
		417	=item $rend = urxvt::OVERLAY_RSTYLE
		418
		419	Return the rendition mask used for overlays by default.
		420
		421	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
		422
		423	Return the bit that enabled bold, italic, blink, reverse-video and
		424	underline, respectively. To enable such a style, just logically OR it into
		425	the bitset.
		426
		427	=item $foreground = urxvt::GET_BASEFG $rend
		428
		429	=item $background = urxvt::GET_BASEBG $rend
		430
		431	Return the foreground/background colour index, respectively.
		432
		433	=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)
		434
		435	=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)
		436
		437	Replace the foreground/background colour in the rendition mask with the
		438	specified one.
		439
		440	=item $value = urxvt::GET_CUSTOM ($rend)
		441
		442	Return the "custom" value: Every rendition has 5 bits for use by
		443	extensions. They can be set and changed as you like and are initially
		444	zero.
		445
		446	=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)
		447
		448	Change the custom value.
		449
		450	=back
		451
152	=cut	452	=cut
153		453
154	package urxvt;	454	package urxvt;
155		455
		456	use utf8;
156	use strict;	457	use strict;
		458	use Carp ();
		459	use Scalar::Util ();
		460	use List::Util ();
157		461
158	our $term;	462	our $VERSION = 1;
		463	our $TERM;
159	our @HOOKNAME;	464	our @HOOKNAME;
		465	our %HOOKTYPE = map +($HOOKNAME[$_] => $_), 0..$#HOOKNAME;
		466	our %OPTION;
160	our $LIBDIR;	467	our $LIBDIR;
161		468
162	BEGIN {	469	BEGIN {
163	urxvt->bootstrap;	470	urxvt->bootstrap;
164		471
…		…
167	my $msg = join "", @_;	474	my $msg = join "", @_;
168	$msg .= "\n"	475	$msg .= "\n"
169	unless $msg =~ /\n$/;	476	unless $msg =~ /\n$/;
170	urxvt::warn ($msg);	477	urxvt::warn ($msg);
171	};	478	};
		479
		480	delete $ENV{IFS};
		481	delete $ENV{CDPATH};
		482	delete $ENV{BASH_ENV};
		483	$ENV{PATH} = "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/opt/bin:/opt/sbin";
172	}	484	}
173		485
174	my @hook_count;	486	my @hook_count;
175	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};	487	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
176		488
177	sub verbose {	489	sub verbose {
178	my ($level, $msg) = @_;	490	my ($level, $msg) = @_;
179	warn "$msg\n" if $level <= $verbosity;	491	warn "$msg\n" if $level <= $verbosity;
180	}	492	}
181		493
182	# find on_xxx subs in the package and register them	494	my $extension_pkg = "extension0000";
183	# as hooks	495	my %extension_pkg;
184	sub register_package($) {
185	my ($pkg) = @_;
186
187	for my $htype (0.. $#HOOKNAME) {
188	my $name = $HOOKNAME[$htype];
189
190	my $ref = $pkg->can ("on_" . lc $name)
191	or next;
192
193	$term->{_hook}[$htype]{$ref*1} = $ref;
194	$hook_count[$htype]++
195	or set_should_invoke $htype, 1;
196	}
197	}
198
199	my $script_pkg = "script0000";
200	my %script_pkg;
201		496
202	# load a single script into its own package, once only	497	# load a single script into its own package, once only
203	sub script_package($) {	498	sub extension_package($) {
204	my ($path) = @_;	499	my ($path) = @_;
205		500
206	$script_pkg{$path} ||= do {	501	$extension_pkg{$path} ||= do {
207	my $pkg = "urxvt::" . ($script_pkg++);	502	my $pkg = "urxvt::" . ($extension_pkg++);
208		503
209	verbose 3, "loading script '$path' into package '$pkg'";	504	verbose 3, "loading extension '$path' into package '$pkg'";
210		505
211	open my $fh, "<:raw", $path	506	open my $fh, "<:raw", $path
212	or die "$path: $!";	507	or die "$path: $!";
213		508
		509	my $source = untaint
214	my $source = "package $pkg; use strict; use utf8;\n"	510	"package $pkg; use strict; use utf8;\n"
		511	. "use base urxvt::term::extension::;\n"
215	. "#line 1 \"$path\"\n{\n"	512	. "#line 1 \"$path\"\n{\n"
216	. (do { local $/; <$fh> })	513	. (do { local $/; <$fh> })
217	. "\n};\n1";	514	. "\n};\n1";
218		515
		516	eval $source
219	eval $source or die "$path: $@";	517	or die "$path: $@";
220		518
221	$pkg	519	$pkg
222	}	520	}
223	}	521	}
224		522
		523	our $retval; # return value for urxvt
		524
225	# called by the rxvt core	525	# called by the rxvt core
226	sub invoke {	526	sub invoke {
227	local $term = shift;	527	local $TERM = shift;
228	my $htype = shift;	528	my $htype = shift;
229		529
230	if ($htype == 0) { # INIT	530	if ($htype == 0) { # INIT
231	my @dirs = ((split /:/, $term->resource ("perl_lib")), $LIBDIR);	531	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		532
		533	my %ext_arg;
232		534
233	for my $ext (split /:/, $term->resource ("perl_ext")) {	535	for (map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		536	if ($_ eq "default") {
		537	$ext_arg{$_} ||= [] for qw(selection option-popup selection-popup searchable-scrollback);
		538	} elsif (/^-(.*)$/) {
		539	delete $ext_arg{$1};
		540	} elsif (/^([^<]+)<(.*)>$/) {
		541	push @{ $ext_arg{$1} }, $2;
		542	} else {
		543	$ext_arg{$_} ||= [];
		544	}
		545	}
		546
		547	while (my ($ext, $argv) = each %ext_arg) {
234	my @files = grep -f $_, map "$_/$ext", @dirs;	548	my @files = grep -f $_, map "$_/$ext", @dirs;
235		549
236	if (@files) {	550	if (@files) {
237	register_package script_package $files[0];	551	$TERM->register_package (extension_package $files[0], $argv);
238	} else {	552	} else {
239	warn "perl extension '$ext' not found in perl library search path\n";	553	warn "perl extension '$ext' not found in perl library search path\n";
240	}	554	}
241	}	555	}
242		556
		557	eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
		558	warn $@ if $@;
		559	}
		560
		561	$retval = undef;
		562
		563	if (my $cb = $TERM->{_hook}[$htype]) {
		564	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		565	if $verbosity >= 10;
		566
		567	keys %$cb;
		568
		569	while (my ($pkg, $cb) = each %$cb) {
		570	$retval = eval { $cb->($TERM->{_pkg}{$pkg}, @_) }
		571	and last;
		572
		573	if ($@) {
		574	$TERM->ungrab; # better to lose the grab than the session
		575	warn $@;
		576	}
		577	}
		578	}
		579
243	} elsif ($htype == 1) { # DESTROY	580	if ($htype == 1) { # DESTROY
244	if (my $hook = $term->{_hook}) {	581	if (my $hook = delete $TERM->{_hook}) {
245	for my $htype (0..$#$hook) {	582	for my $htype (0..$#$hook) {
246	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }	583	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
247	or set_should_invoke $htype, 0;	584	or set_should_invoke $htype, 0;
248	}	585	}
249	}	586	}
		587
		588	# clear package objects
		589	%$_ = () for values %{ $TERM->{_pkg} };
		590
		591	# clear package
		592	%$TERM = ();
250	}	593	}
251		594
252	my $cb = $term->{_hook}[$htype]	595	$retval
253	or return;	596	}
254		597
255	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"	598	# urxvt::term::extension
256	if $verbosity >= 10;
257		599
		600	package urxvt::term::extension;
		601
		602	sub enable {
		603	my ($self, %hook) = @_;
		604	my $pkg = $self->{_pkg};
		605
258	while (my ($k, $v) = each %$cb) {	606	while (my ($name, $cb) = each %hook) {
259	return 1 if $v->($term, @_);	607	my $htype = $HOOKTYPE{uc $name};
		608	defined $htype
		609	or Carp::croak "unsupported hook type '$name'";
		610
		611	unless (exists $self->{term}{_hook}[$htype]{$pkg}) {
		612	$hook_count[$htype]++
		613	or urxvt::set_should_invoke $htype, 1;
		614	}
		615
		616	$self->{term}{_hook}[$htype]{$pkg} = $cb;
260	}	617	}
		618	}
261		619
		620	sub disable {
		621	my ($self, @hook) = @_;
		622	my $pkg = $self->{_pkg};
		623
		624	for my $name (@hook) {
		625	my $htype = $HOOKTYPE{uc $name};
		626	defined $htype
		627	or Carp::croak "unsupported hook type '$name'";
		628
		629	if (delete $self->{term}{_hook}[$htype]{$pkg}) {
		630	--$hook_count[$htype]
		631	or urxvt::set_should_invoke $htype, 0;
		632	}
262	0	633	}
263	}	634	}
264		635
265	=back	636	our $AUTOLOAD;
		637
		638	sub AUTOLOAD {
		639	$AUTOLOAD =~ /:([^:]+)$/
		640	or die "FATAL: \$AUTOLOAD '$AUTOLOAD' unparsable";
		641
		642	eval qq{
		643	sub $AUTOLOAD {
		644	my \$proxy = shift;
		645	\$proxy->{term}->$1 (\@_)
		646	}
		647	1
		648	} or die "FATAL: unable to compile method forwarder: $@";
		649
		650	goto &$AUTOLOAD;
		651	}
		652
		653	sub DESTROY {
		654	# nop
		655	}
		656
		657	# urxvt::destroy_hook
		658
		659	sub urxvt::destroy_hook::DESTROY {
		660	${$_[0]}->();
		661	}
		662
		663	sub urxvt::destroy_hook(&) {
		664	bless \shift, urxvt::destroy_hook::
		665	}
		666
		667	package urxvt::anyevent;
		668
		669	=head2 The C<urxvt::anyevent> Class
		670
		671	The sole purpose of this class is to deliver an interface to the
		672	C<AnyEvent> module - any module using it will work inside urxvt without
		673	further work. The only exception is that you cannot wait on condition
		674	variables, but non-blocking condvar use is ok. What this means is that you
		675	cannot use blocking APIs, but the non-blocking variant should work.
		676
		677	=cut
		678
		679	our $VERSION = 1;
		680
		681	$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
		682	push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
		683
		684	sub timer {
		685	my ($class, %arg) = @_;
		686
		687	my $cb = $arg{cb};
		688
		689	urxvt::timer
		690	->new
		691	->start (urxvt::NOW + $arg{after})
		692	->cb (sub {
		693	$_[0]->stop; # need to cancel manually
		694	$cb->();
		695	})
		696	}
		697
		698	sub io {
		699	my ($class, %arg) = @_;
		700
		701	my $cb = $arg{cb};
		702
		703	bless [$arg{fh}, urxvt::iow
		704	->new
		705	->fd (fileno $arg{fh})
		706	->events (($arg{poll} =~ /r/ ? 1 : 0)
		707	| ($arg{poll} =~ /w/ ? 2 : 0))
		708	->start
		709	->cb (sub {
		710	$cb->(($_[1] & 1 ? 'r' : '')
		711	. ($_[1] & 2 ? 'w' : ''));
		712	})],
		713	urxvt::anyevent::
		714	}
		715
		716	sub DESTROY {
		717	$_[0][1]->stop;
		718	}
		719
		720	sub condvar {
		721	bless \my $flag, urxvt::anyevent::condvar::
		722	}
		723
		724	sub urxvt::anyevent::condvar::broadcast {
		725	${$_[0]}++;
		726	}
		727
		728	sub urxvt::anyevent::condvar::wait {
		729	unless (${$_[0]}) {
		730	Carp::croak "AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API";
		731	}
		732	}
		733
		734	package urxvt::term;
266		735
267	=head2 The C<urxvt::term> Class	736	=head2 The C<urxvt::term> Class
268		737
269	=over 4	738	=over 4
		739
		740	=cut
		741
		742	# find on_xxx subs in the package and register them
		743	# as hooks
		744	sub register_package {
		745	my ($self, $pkg, $argv) = @_;
		746
		747	my $proxy = bless {
		748	_pkg => $pkg,
		749	argv => $argv,
		750	}, $pkg;
		751	Scalar::Util::weaken ($proxy->{term} = $self);
		752
		753	$self->{_pkg}{$pkg} = $proxy;
		754
		755	for my $name (@HOOKNAME) {
		756	if (my $ref = $pkg->can ("on_" . lc $name)) {
		757	$proxy->enable ($name => $ref);
		758	}
		759	}
		760	}
		761
		762	=item $term->destroy
		763
		764	Destroy the terminal object (close the window, free resources etc.).
		765
		766	=item $isset = $term->option ($optval[, $set])
		767
		768	Returns true if the option specified by C<$optval> is enabled, and
		769	optionally change it. All option values are stored by name in the hash
		770	C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
		771
		772	Here is a a likely non-exhaustive list of option names, please see the
		773	source file F</src/optinc.h> to see the actual list:
		774
		775	borderLess console cursorBlink cursorUnderline hold iconic insecure
		776	intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
		777	pastableTabs pointerBlank reverseVideo scrollBar scrollBar_floating
		778	scrollBar_right scrollTtyKeypress scrollTtyOutput scrollWithBuffer
		779	secondaryScreen secondaryScroll skipBuiltinGlyphs transparent
		780	tripleclickwords utmpInhibit visualBell
270		781
271	=item $value = $term->resource ($name[, $newval])	782	=item $value = $term->resource ($name[, $newval])
272		783
273	Returns the current resource value associated with a given name and	784	Returns the current resource value associated with a given name and
274	optionally sets a new value. Setting values is most useful in the C<init>	785	optionally sets a new value. Setting values is most useful in the C<init>
…		…
284		795
285	Please note that resource strings will currently only be freed when the	796	Please note that resource strings will currently only be freed when the
286	terminal is destroyed, so changing options frequently will eat memory.	797	terminal is destroyed, so changing options frequently will eat memory.
287		798
288	Here is a a likely non-exhaustive list of resource names, not all of which	799	Here is a a likely non-exhaustive list of resource names, not all of which
289	are supported in every build, please see the source to see the actual	800	are supported in every build, please see the source file F</src/rsinc.h>
290	list:	801	to see the actual list:
291		802
292	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont	803	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
293	borderLess color cursorBlink cursorUnderline cutchars delete_key	804	borderLess color cursorBlink cursorUnderline cutchars delete_key
294	display_name embed ext_bwidth fade font geometry hold iconName	805	display_name embed ext_bwidth fade font geometry hold iconName
295	imFont imLocale inputMethod insecure int_bwidth intensityStyles	806	imFont imLocale inputMethod insecure int_bwidth intensityStyles
296	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier	807	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
297	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext	808	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
298	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd	809	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
299	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating	810	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
300	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput	811	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
301	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle	812	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
302	shade term_name title transparent transparent_all tripleclickwords	813	shade term_name title transparent transparent_all tripleclickwords
303	utmpInhibit visualBell	814	utmpInhibit visualBell
304		815
305	=cut	816	=cut
306		817
307	sub urxvt::term::resource($$;$) {	818	sub resource($$;$) {
308	my ($self, $name) = (shift, shift);	819	my ($self, $name) = (shift, shift);
309	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);	820	unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
310	goto &urxvt::term::_resource;	821	&urxvt::term::_resource
311	}	822	}
		823
		824	=item $success = $term->parse_keysym ($keysym_spec, $command_string)
		825
		826	Adds a keymap translation exactly as specified via a resource. See the
		827	C<keysym> resource in the @@RXVT_NAME@@(1) manpage.
		828
		829	=item $rend = $term->rstyle ([$new_rstyle])
		830
		831	Return and optionally change the current rendition. Text that is output by
		832	the terminal application will use this style.
		833
		834	=item ($row, $col) = $term->screen_cur ([$row, $col])
		835
		836	Return the current coordinates of the text cursor position and optionally
		837	set it (which is usually bad as applications don't expect that).
312		838
313	=item ($row, $col) = $term->selection_mark ([$row, $col])	839	=item ($row, $col) = $term->selection_mark ([$row, $col])
314		840
315	=item ($row, $col) = $term->selection_beg ([$row, $col])	841	=item ($row, $col) = $term->selection_beg ([$row, $col])
316		842
…		…
326		852
327	=item $oldtext = $term->selection ([$newtext])	853	=item $oldtext = $term->selection ([$newtext])
328		854
329	Return the current selection text and optionally replace it by C<$newtext>.	855	Return the current selection text and optionally replace it by C<$newtext>.
330		856
331	=item $term->scr_overlay ($x, $y, $text)	857	=item $term->overlay_simple ($x, $y, $text)
332		858
333	Create a simple multi-line overlay box. See the next method for details.	859	Create a simple multi-line overlay box. See the next method for details.
334		860
335	=cut	861	=cut
336		862
337	sub urxvt::term::scr_overlay {	863	sub overlay_simple {
338	my ($self, $x, $y, $text) = @_;	864	my ($self, $x, $y, $text) = @_;
339		865
340	my @lines = split /\n/, $text;	866	my @lines = split /\n/, $text;
341		867
342	my $w = 0;	868	my $w = List::Util::max map $self->strwidth ($_), @lines;
343	for (map $self->strwidth ($_), @lines) {
344	$w = $_ if $w < $_;
345	}
346		869
347	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	870	my $overlay = $self->overlay ($x, $y, $w, scalar @lines);
348	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;	871	$overlay->set (0, $_, $lines[$_]) for 0.. $#lines;
349	}
350		872
		873	$overlay
		874	}
		875
351	=item $term->scr_overlay_new ($x, $y, $width, $height)	876	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
352		877
353	Create a new (empty) overlay at the given position with the given	878	Create a new (empty) overlay at the given position with the given
354	width/height. A border will be put around the box. If either C<$x> or	879	width/height. C<$rstyle> defines the initial rendition style
355	C<$y> is negative, then this is counted from the right/bottom side,	880	(default: C<OVERLAY_RSTYLE>).
356	respectively.
357		881
358	=item $term->scr_overlay_off	882	If C<$border> is C<2> (default), then a decorative border will be put
		883	around the box.
359		884
360	Switch the overlay off again.	885	If either C<$x> or C<$y> is negative, then this is counted from the
		886	right/bottom side, respectively.
361		887
362	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	888	This method returns an urxvt::overlay object. The overlay will be visible
		889	as long as the perl object is referenced.
363		890
364	Put a single character (specified numerically) at the given overlay	891	The methods currently supported on C<urxvt::overlay> objects are:
365	position.
366		892
		893	=over 4
		894
367	=item $term->scr_overlay_set ($x, $y, $text)	895	=item $overlay->set ($x, $y, $text, $rend)
368		896
369	Write a string at the given position into the overlay.	897	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		898	text in rxvt-unicode's special encoding and an array of rendition values
		899	at a specific position inside the overlay.
370		900
		901	=item $overlay->hide
		902
		903	If visible, hide the overlay, but do not destroy it.
		904
		905	=item $overlay->show
		906
		907	If hidden, display the overlay again.
		908
		909	=back
		910
		911	=item $popup = $term->popup ($event)
		912
		913	Creates a new C<urxvt::popup> object that implements a popup menu. The
		914	C<$event> I<must> be the event causing the menu to pop up (a button event,
		915	currently).
		916
		917	=cut
		918
		919	sub popup {
		920	my ($self, $event) = @_;
		921
		922	$self->grab ($event->{time}, 1)
		923	or return;
		924
		925	my $popup = bless {
		926	term => $self,
		927	event => $event,
		928	}, urxvt::popup::;
		929
		930	Scalar::Util::weaken $popup->{term};
		931
		932	$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
		933	Scalar::Util::weaken $self->{_destroy}{$popup};
		934
		935	$popup
		936	}
		937
371	=item $cellwidth = $term->strwidth $string	938	=item $cellwidth = $term->strwidth ($string)
372		939
373	Returns the number of screen-cells this string would need. Correctly	940	Returns the number of screen-cells this string would need. Correctly
374	accounts for wide and combining characters.	941	accounts for wide and combining characters.
375		942
376	=item $octets = $term->locale_encode $string	943	=item $octets = $term->locale_encode ($string)
377		944
378	Convert the given text string into the corresponding locale encoding.	945	Convert the given text string into the corresponding locale encoding.
379		946
380	=item $string = $term->locale_decode $octets	947	=item $string = $term->locale_decode ($octets)
381		948
382	Convert the given locale-encoded octets into a perl string.	949	Convert the given locale-encoded octets into a perl string.
383		950
		951	=item $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
		952
		953	XORs the rendition values in the given span with the provided value
		954	(default: C<RS_RVid>). Useful in refresh hooks to provide effects similar
		955	to the selection.
		956
		957	=item $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])
		958
		959	Similar to C<scr_xor_span>, but xors a rectangle instead. Trailing
		960	whitespace will additionally be xored with the C<$rstyle2>, which defaults
		961	to C<RS_RVid | RS_Uline>, which removes reverse video again and underlines
		962	it instead.
		963
		964	=item $term->scr_bell
		965
		966	Ring the bell!
		967
		968	=item $term->scr_add_lines ($string)
		969
		970	Write the given text string to the screen, as if output by the application
		971	running inside the terminal. It may not contain command sequences (escape
		972	codes), but is free to use line feeds, carriage returns and tabs. The
		973	string is a normal text string, not in locale-dependent encoding.
		974
		975	Normally its not a good idea to use this function, as programs might be
		976	confused by changes in cursor position or scrolling. Its useful inside a
		977	C<on_add_lines> hook, though.
		978
		979	=item $term->cmd_parse ($octets)
		980
		981	Similar to C<scr_add_lines>, but the argument must be in the
		982	locale-specific encoding of the terminal and can contain command sequences
		983	(escape codes) that will be interpreted.
		984
384	=item $term->tt_write ($octets)	985	=item $term->tt_write ($octets)
385		986
386	Write the octets given in C<$data> to the tty (i.e. as program input). To	987	Write the octets given in C<$data> to the tty (i.e. as program input). To
387	pass characters instead of octets, you should convetr you strings first to	988	pass characters instead of octets, you should convert your strings first
388	the locale-specific encoding using C<< $term->locale_encode >>.	989	to the locale-specific encoding using C<< $term->locale_encode >>.
		990
		991	=item $old_events = $term->pty_ev_events ([$new_events])
		992
		993	Replaces the event mask of the pty watcher by the given event mask. Can
		994	be used to suppress input and output handling to the pty/tty. See the
		995	description of C<< urxvt::timer->events >>. Make sure to always restore
		996	the previous value.
		997
		998	=item $windowid = $term->parent
		999
		1000	Return the window id of the toplevel window.
		1001
		1002	=item $windowid = $term->vt
		1003
		1004	Return the window id of the terminal window.
		1005
		1006	=item $window_width = $term->width
		1007
		1008	=item $window_height = $term->height
		1009
		1010	=item $font_width = $term->fwidth
		1011
		1012	=item $font_height = $term->fheight
		1013
		1014	=item $font_ascent = $term->fbase
		1015
		1016	=item $terminal_rows = $term->nrow
		1017
		1018	=item $terminal_columns = $term->ncol
		1019
		1020	=item $has_focus = $term->focus
		1021
		1022	=item $is_mapped = $term->mapped
		1023
		1024	=item $max_scrollback = $term->saveLines
		1025
		1026	=item $nrow_plus_saveLines = $term->total_rows
		1027
		1028	=item $lines_in_scrollback = $term->nsaved
		1029
		1030	Return various integers describing terminal characteristics.
		1031
		1032	=item $lc_ctype = $term->locale
		1033
		1034	Returns the LC_CTYPE category string used by this rxvt-unicode.
		1035
		1036	=item $x_display = $term->display_id
		1037
		1038	Return the DISPLAY used by rxvt-unicode.
		1039
		1040	=item $modifiermask = $term->ModLevel3Mask
		1041
		1042	=item $modifiermask = $term->ModMetaMask
		1043
		1044	=item $modifiermask = $term->ModNumLockMask
		1045
		1046	Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
		1047	AltGr), the meta key (often Alt) and the num lock key, if applicable.
		1048
		1049	=item $view_start = $term->view_start ([$newvalue])
		1050
		1051	Returns the negative row number of the topmost line. Minimum value is
		1052	C<0>, which displays the normal terminal contents. Larger values scroll
		1053	this many lines into the scrollback buffer.
		1054
		1055	=item $term->want_refresh
		1056
		1057	Requests a screen refresh. At the next opportunity, rxvt-unicode will
		1058	compare the on-screen display with its stored representation. If they
		1059	differ, it redraws the differences.
		1060
		1061	Used after changing terminal contents to display them.
		1062
		1063	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
		1064
		1065	Returns the text of the entire row with number C<$row_number>. Row C<0>
		1066	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
		1067	terminal line. The scrollback buffer starts at line C<-1> and extends to
		1068	line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
		1069	is requested.
		1070
		1071	If C<$new_text> is specified, it will replace characters in the current
		1072	line, starting at column C<$start_col> (default C<0>), which is useful
		1073	to replace only parts of a line. The font index in the rendition will
		1074	automatically be updated.
		1075
		1076	C<$text> is in a special encoding: tabs and wide characters that use more
		1077	than one cell when displayed are padded with urxvt::NOCHAR characters
		1078	(C<chr 65535>). Characters with combining characters and other characters
		1079	that do not fit into the normal tetx encoding will be replaced with
		1080	characters in the private use area.
		1081
		1082	You have to obey this encoding when changing text. The advantage is
		1083	that C<substr> and similar functions work on screen cells and not on
		1084	characters.
		1085
		1086	The methods C<< $term->special_encode >> and C<< $term->special_decode >>
		1087	can be used to convert normal strings into this encoding and vice versa.
		1088
		1089	=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
		1090
		1091	Like C<< $term->ROW_t >>, but returns an arrayref with rendition
		1092	bitsets. Rendition bitsets contain information about colour, font, font
		1093	styles and similar information. See also C<< $term->ROW_t >>.
		1094
		1095	When setting rendition, the font mask will be ignored.
		1096
		1097	See the section on RENDITION, above.
		1098
		1099	=item $length = $term->ROW_l ($row_number[, $new_length])
		1100
		1101	Returns the number of screen cells that are in use ("the line
		1102	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
		1103	line is joined with the following one.
		1104
		1105	=item $bool = $term->is_longer ($row_number)
		1106
		1107	Returns true if the row is part of a multiple-row logical "line" (i.e.
		1108	joined with the following row), which means all characters are in use
		1109	and it is continued on the next row (and possibly a continuation of the
		1110	previous row(s)).
		1111
		1112	=item $line = $term->line ($row_number)
		1113
		1114	Create and return a new C<urxvt::line> object that stores information
		1115	about the logical line that row C<$row_number> is part of. It supports the
		1116	following methods:
		1117
		1118	=over 4
		1119
		1120	=item $text = $line->t ([$new_text])
		1121
		1122	Returns or replaces the full text of the line, similar to C<ROW_t>
		1123
		1124	=item $rend = $line->r ([$new_rend])
		1125
		1126	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		1127
		1128	=item $length = $line->l
		1129
		1130	Returns the length of the line in cells, similar to C<ROW_l>.
		1131
		1132	=item $rownum = $line->beg
		1133
		1134	=item $rownum = $line->end
		1135
		1136	Return the row number of the first/last row of the line, respectively.
		1137
		1138	=item $offset = $line->offset_of ($row, $col)
		1139
		1140	Returns the character offset of the given row|col pair within the logical
		1141	line.
		1142
		1143	=item ($row, $col) = $line->coord_of ($offset)
		1144
		1145	Translates a string offset into terminal coordinates again.
389		1146
390	=back	1147	=back
		1148
		1149	=cut
		1150
		1151	sub line {
		1152	my ($self, $row) = @_;
		1153
		1154	my $maxrow = $self->nrow - 1;
		1155
		1156	my ($beg, $end) = ($row, $row);
		1157
		1158	--$beg while $self->ROW_is_longer ($beg - 1);
		1159	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		1160
		1161	bless {
		1162	term => $self,
		1163	beg => $beg,
		1164	end => $end,
		1165	ncol => $self->ncol,
		1166	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		1167	}, urxvt::line::
		1168	}
		1169
		1170	sub urxvt::line::t {
		1171	my ($self) = @_;
		1172
		1173	if (@_ > 1)
		1174	{
		1175	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1176	for $self->{beg} .. $self->{end};
		1177	}
		1178
		1179	defined wantarray &&
		1180	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		1181	0, $self->{len}
		1182	}
		1183
		1184	sub urxvt::line::r {
		1185	my ($self) = @_;
		1186
		1187	if (@_ > 1)
		1188	{
		1189	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		1190	for $self->{beg} .. $self->{end};
		1191	}
		1192
		1193	if (defined wantarray) {
		1194	my $rend = [
		1195	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		1196	];
		1197	$#$rend = $self->{len} - 1;
		1198	return $rend;
		1199	}
		1200
		1201	()
		1202	}
		1203
		1204	sub urxvt::line::beg { $_[0]{beg} }
		1205	sub urxvt::line::end { $_[0]{end} }
		1206	sub urxvt::line::l { $_[0]{len} }
		1207
		1208	sub urxvt::line::offset_of {
		1209	my ($self, $row, $col) = @_;
		1210
		1211	($row - $self->{beg}) * $self->{ncol} + $col
		1212	}
		1213
		1214	sub urxvt::line::coord_of {
		1215	my ($self, $offset) = @_;
		1216
		1217	use integer;
		1218
		1219	(
		1220	$offset / $self->{ncol} + $self->{beg},
		1221	$offset % $self->{ncol}
		1222	)
		1223	}
		1224
		1225	=item $text = $term->special_encode $string
		1226
		1227	Converts a perl string into the special encoding used by rxvt-unicode,
		1228	where one character corresponds to one screen cell. See
		1229	C<< $term->ROW_t >> for details.
		1230
		1231	=item $string = $term->special_decode $text
		1232
		1233	Converts rxvt-unicodes text reprsentation into a perl string. See
		1234	C<< $term->ROW_t >> for details.
		1235
		1236	=item $success = $term->grab_button ($button, $modifiermask)
		1237
		1238	Registers a synchronous button grab. See the XGrabButton manpage.
		1239
		1240	=item $success = $term->grab ($eventtime[, $sync])
		1241
		1242	Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
		1243	synchronous (C<$sync> is true). Also remembers the grab timestampe.
		1244
		1245	=item $term->allow_events_async
		1246
		1247	Calls XAllowEvents with AsyncBoth for the most recent grab.
		1248
		1249	=item $term->allow_events_sync
		1250
		1251	Calls XAllowEvents with SyncBoth for the most recent grab.
		1252
		1253	=item $term->allow_events_replay
		1254
		1255	Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
		1256	recent grab.
		1257
		1258	=item $term->ungrab
		1259
		1260	Calls XUngrab for the most recent grab. Is called automatically on
		1261	evaluation errors, as it is better to lose the grab in the error case as
		1262	the session.
		1263
		1264	=back
		1265
		1266	=cut
		1267
		1268	package urxvt::popup;
		1269
		1270	=head2 The C<urxvt::popup> Class
		1271
		1272	=over 4
		1273
		1274	=cut
		1275
		1276	sub add_item {
		1277	my ($self, $item) = @_;
		1278
		1279	$item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
		1280	$item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
		1281	$item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
		1282
		1283	$item->{render} ||= sub { $_[0]{text} };
		1284
		1285	push @{ $self->{item} }, $item;
		1286	}
		1287
		1288	sub add_separator {
		1289	my ($self, $sep) = @_;
		1290
		1291	$sep ||= "=";
		1292
		1293	$self->add_item ({
		1294	rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
		1295	text => "",
		1296	render => sub { $sep x $self->{term}->ncol },
		1297	activate => sub { },
		1298	});
		1299	}
		1300
		1301	sub add_title {
		1302	my ($self, $title) = @_;
		1303
		1304	$self->add_item ({
		1305	rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
		1306	text => $title,
		1307	activate => sub { },
		1308	});
		1309	}
		1310
		1311	sub add_button {
		1312	my ($self, $text, $cb) = @_;
		1313
		1314	$self->add_item ({ type => "button", text => $text, activate => $cb});
		1315	}
		1316
		1317	sub add_toggle {
		1318	my ($self, $text, $cb, $value) = @_;
		1319
		1320	my $item; $item = {
		1321	type => "button",
		1322	text => " $text",
		1323	value => $value,
		1324	render => sub { ($_[0]{value} ? "* " : " ") . $text },
		1325	activate => sub { $cb->($_[0]{value} = !$_[0]{value}); },
		1326	};
		1327
		1328	$self->add_item ($item);
		1329	}
		1330
		1331	sub show {
		1332	my ($self) = @_;
		1333
		1334	local $urxvt::popup::self = $self;
		1335
		1336	local $ENV{LC_ALL} = $self->{term}->locale;
		1337
		1338	urxvt->new ("--perl-lib" => "", "--perl-ext-common" => "", "-pty-fd" => -1, "-sl" => 0, "-b" => 0,
		1339	"--transient-for" => $self->{term}->parent,
		1340	"-display" => $self->{term}->display_id,
		1341	"-pe" => "urxvt-popup")
		1342	or die "unable to create popup window\n";
		1343	}
		1344
		1345	sub DESTROY {
		1346	my ($self) = @_;
		1347
		1348	delete $self->{term}{_destroy}{$self};
		1349	$self->{term}->ungrab;
		1350	}
391		1351
392	=head2 The C<urxvt::timer> Class	1352	=head2 The C<urxvt::timer> Class
393		1353
394	This class implements timer watchers/events. Time is represented as a	1354	This class implements timer watchers/events. Time is represented as a
395	fractional number of seconds since the epoch. Example:	1355	fractional number of seconds since the epoch. Example:
396		1356
397	# create a digital clock display in upper right corner	1357	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
398	$term->{timer} = urxvt::timer	1358	$term->{timer} = urxvt::timer
399	->new	1359	->new
400	->start (urxvt::NOW)	1360	->interval (1)
401	->cb (sub {	1361	->cb (sub {
402	my ($timer) = @_;
403	my $time = $timer->at;
404	$timer->start ($time + 1);
405	$self->scr_overlay (-1, 0,	1362	$term->{overlay}->set (0, 0,
406	POSIX::strftime "%H:%M:%S", localtime $time);	1363	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
407	});	1364	});
408		1365
409	=over 4	1366	=over 4
410		1367
411	=item $timer = new urxvt::timer	1368	=item $timer = new urxvt::timer
412		1369
413	Create a new timer object in stopped state.	1370	Create a new timer object in started state. It is scheduled to fire
		1371	immediately.
414		1372
415	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	1373	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
416		1374
417	Set the callback to be called when the timer triggers.	1375	Set the callback to be called when the timer triggers.
418		1376
…		…
421	Return the time this watcher will fire next.	1379	Return the time this watcher will fire next.
422		1380
423	=item $timer = $timer->set ($tstamp)	1381	=item $timer = $timer->set ($tstamp)
424		1382
425	Set the time the event is generated to $tstamp.	1383	Set the time the event is generated to $tstamp.
		1384
		1385	=item $timer = $timer->interval ($interval)
		1386
		1387	Normally (and when C<$interval> is C<0>), the timer will automatically
		1388	stop after it has fired once. If C<$interval> is non-zero, then the timer
		1389	is automatically rescheduled at the given intervals.
426		1390
427	=item $timer = $timer->start	1391	=item $timer = $timer->start
428		1392
429	Start the timer.	1393	Start the timer.
430		1394
…		…
444		1408
445	$term->{socket} = ...	1409	$term->{socket} = ...
446	$term->{iow} = urxvt::iow	1410	$term->{iow} = urxvt::iow
447	->new	1411	->new
448	->fd (fileno $term->{socket})	1412	->fd (fileno $term->{socket})
449	->events (1) # wait for read data	1413	->events (urxvt::EVENT_READ)
450	->start	1414	->start
451	->cb (sub {	1415	->cb (sub {
452	my ($iow, $revents) = @_;	1416	my ($iow, $revents) = @_;
453	# $revents must be 1 here, no need to check	1417	# $revents must be 1 here, no need to check
454	sysread $term->{socket}, my $buf, 8192	1418	sysread $term->{socket}, my $buf, 8192
…		…
471		1435
472	Set the filedescriptor (not handle) to watch.	1436	Set the filedescriptor (not handle) to watch.
473		1437
474	=item $iow = $iow->events ($eventmask)	1438	=item $iow = $iow->events ($eventmask)
475		1439
476	Set the event mask to watch. Bit #0 (value C<1>) enables watching for read	1440	Set the event mask to watch. The only allowed values are
477	data, Bit #1 (value C<2>) enables watching for write data.	1441	C<urxvt::EVENT_READ> and C<urxvt::EVENT_WRITE>, which might be ORed
		1442	together, or C<urxvt::EVENT_NONE>.
478		1443
479	=item $iow = $iow->start	1444	=item $iow = $iow->start
480		1445
481	Start watching for requested events on the given handle.	1446	Start watching for requested events on the given handle.
482		1447
…		…
493	This variable controls the verbosity level of the perl extension. Higher	1458	This variable controls the verbosity level of the perl extension. Higher
494	numbers indicate more verbose output.	1459	numbers indicate more verbose output.
495		1460
496	=over 4	1461	=over 4
497		1462
498	=item 0 - only fatal messages	1463	=item == 0 - fatal messages
499		1464
500	=item 3 - script loading and management	1465	=item >= 3 - script loading and management
501		1466
502	=item 10 - all events received	1467	=item >=10 - all events received
503		1468
504	=back	1469	=back
505		1470
506	=head1 AUTHOR	1471	=head1 AUTHOR
507		1472

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