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Revision 1.1 by root, Mon Jan 2 15:35:43 2006 UTC vs.
Revision 1.62 by root, Mon Jan 9 02:06:43 2006 UTC

1=encoding utf8
2
1=head1 NAME 3=head1 NAME
2 4
3urxvt - 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
7Put your scripts into $LIBDIR/perl-init/, they will be loaded automatically. 9 # create a file grab_test in $HOME:
8
9Each script will only be loaded once, even in urxvtd, and will be valid
10globally.
11
12Scripts are evaluated in a 'use strict' and 'use utf8' environment, and
13thus must be written in utf-8.
14 10
15 sub on_sel_grab { 11 sub on_sel_grab {
16 warn "you selected ", $_[0]->selection; 12 warn "you selected ", $_[0]->selection;
13 ()
17 } 14 }
18 15
19 1 16 # start a @@RXVT_NAME@@ using it:
17
18 @@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
20 19
21=head1 DESCRIPTION 20=head1 DESCRIPTION
22 21
22Everytime a terminal object gets created, extension scripts specified via
23the C<perl> resource are loaded and associated with it.
24
25Scripts are compiled in a 'use strict' and 'use utf8' environment, and
26thus must be encoded as UTF-8.
27
28Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
29scripts will be shared (but not enabled) for all terminals.
30
31=head2 Prepackaged Extensions
32
33This section describes the extensiosn delivered with this version. You can
34find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
35
36You can activate them like this:
37
38 @@RXVT_NAME@@ -pe <extensionname>
39
40=over 4
41
42=item selection (enabled by default)
43
44Intelligent selection. This extension tries to be more intelligent when
45the user extends selections (double-click). Right now, it tries to select
46urls and complete shell-quoted arguments, which is very convenient, too,
47if your F<ls> supports C<--quoting-style=shell>.
48
49It also offers the following bindable event:
50
51=over 4
52
53=item rot13
54
55Rot-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
63Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
64runtime.
65
66=item selection-popup (enabled by default)
67
68Binds a popup menu to Ctrl-Button3 that lets you convert the selection
69text into various other formats/action.
70
71=item digital-clock
72
73Displays a digital clock using the built-in overlay.
74
75=item mark-urls
76
77Uses per-line display filtering (C<on_line_update>) to underline urls.
78
79=item block-graphics-to-ascii
80
81A not very useful example of filtering all text output to the terminal,
82by replacing all line-drawing characters (U+2500 .. U+259F) by a
83similar-looking ascii character.
84
85=item example-refresh-hooks
86
87Displays a very simple digital clock in the upper right corner of the
88window. Illustrates overwriting the refresh callbacks to create your own
89overlays or changes.
90
91=back
92
93=head2 General API Considerations
94
95All objects (such as terminals, time watchers etc.) are typical
96reference-to-hash objects. The hash can be used to store anything you
97like. All members starting with an underscore (such as C<_ptr> or
98C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
99modified).
100
101When objects are destroyed on the C++ side, the perl object hashes are
102emptied, so its best to store related objects such as time watchers and
103the like inside the terminal object so they get destroyed as soon as the
104terminal is destroyed.
105
106Argument names also often indicate the type of a parameter. Here are some
107hints on what they mean:
108
109=over 4
110
111=item $text
112
113Rxvt-unicodes special way of encoding text, where one "unicode" character
114always represents one screen cell. See L<row_t> for a discussion of this format.
115
116=item $string
117
118A perl text string, with an emphasis on I<text>. It can store all unicode
119characters and is to be distinguished with text encoded in a specific
120encoding (often locale-specific) and binary data.
121
122=item $octets
123
124Either binary data or - more common - a text string encoded in a
125locale-specific way.
126
127=back
128
23=head2 Hooks 129=head2 Hooks
24 130
25The following subroutines can be declared in loaded scripts, and will be called 131The following subroutines can be declared in extension files, and will be
26whenever the relevant event happens. 132called whenever the relevant event happens.
133
134The first argument passed to them is an object private to each terminal
135and extension package. You can call all C<urxvt::term> methods on it, but
136its not a real C<urxvt::term> object. Instead, the real C<urxvt::term>
137object that is shared between all packages is stored in the C<term>
138member. It is, however, blessed intot he package of the extension script,
139so for all practical purposes you can treat an extension script as a class.
27 140
28All of them must return a boolean value. If it is true, then the event 141All of them must return a boolean value. If it is true, then the event
29counts as being I<consumed>, and the invocation of other hooks is skipped, 142counts as being I<consumed>, and the invocation of other hooks is skipped,
30and the relevant action might not be carried out by the C++ code. 143and the relevant action might not be carried out by the C++ code.
31 144
34=over 4 147=over 4
35 148
36=item on_init $term 149=item on_init $term
37 150
38Called after a new terminal object has been initialized, but before 151Called after a new terminal object has been initialized, but before
39windows are created or the command gets run. 152windows are created or the command gets run. Most methods are unsafe to
153call or deliver senseless data, as terminal size and other characteristics
154have not yet been determined. You can safely query and change resources,
155though.
40 156
41=item on_reset $term 157=item on_reset $term
42 158
43Called after the screen is "reset" for any reason, such as resizing or 159Called after the screen is "reset" for any reason, such as resizing or
44control sequences. Here is where you can react on changes to size-related 160control sequences. Here is where you can react on changes to size-related
64requested from the server. The selection text can be queried and changed 180requested from the server. The selection text can be queried and changed
65by calling C<< $term->selection >>. 181by calling C<< $term->selection >>.
66 182
67Returning a true value aborts selection grabbing. It will still be hilighted. 183Returning a true value aborts selection grabbing. It will still be hilighted.
68 184
69=item on_focus_in $term 185=item on_sel_extend $term
70 186
71Called whenever the window gets the keyboard focus, before urxvt does 187Called whenever the user tries to extend the selection (e.g. with a double
72focus in processing. 188click) and is either supposed to return false (normal operation), or
73 189should extend the selection itelf and return true to suppress the built-in
74=item on_focus_out $term
75
76Called wheneever the window loses keyboard focus, before urxvt does focus
77out processing. 190processing.
191
192See the F<selection> example extension.
78 193
79=item on_view_change $term, $offset 194=item on_view_change $term, $offset
80 195
81Called whenever the view offset changes, i..e the user or program 196Called whenever the view offset changes, i..e the user or program
82scrolls. Offset C<0> means display the normal terminal, positive values 197scrolls. Offset C<0> means display the normal terminal, positive values
90 205
91It is called before lines are scrolled out (so rows 0 .. min ($lines - 1, 206It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
92$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total 207$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total
93number of lines that will be in the scrollback buffer. 208number of lines that will be in the scrollback buffer.
94 209
95=item on_tty_activity $term *NYI* 210=item on_osc_seq $term, $string
96 211
97Called whenever the program(s) running in the urxvt window send output. 212Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
213operating system command) is processed. Cursor position and other state
214information is up-to-date when this happens. For interoperability, the
215string should start with the extension name and a colon, to distinguish
216it from commands for other extensions, and this might be enforced in the
217future.
218
219Be careful not ever to trust (in a security sense) the data you receive,
220as its source can not easily be controleld (e-mail content, messages from
221other users on the same system etc.).
222
223=item on_add_lines $term, $string
224
225Called whenever text is about to be output, with the text as argument. You
226can filter/change and output the text yourself by returning a true value
227and calling C<< $term->scr_add_lines >> yourself. Please note that this
228might be very slow, however, as your hook is called for B<all> text being
229output.
230
231=item on_line_update $term, $row
232
233Called whenever a line was updated or changed. Can be used to filter
234screen output (e.g. underline urls or other useless stuff). Only lines
235that are being shown will be filtered, and, due to performance reasons,
236not always immediately.
237
238The row number is always the topmost row of the line if the line spans
239multiple rows.
240
241Please note that, if you change the line, then the hook might get called
242later with the already-modified line (e.g. if unrelated parts change), so
243you cannot just toggle rendition bits, but only set them.
98 244
99=item on_refresh_begin $term 245=item on_refresh_begin $term
100 246
101Called just before the screen gets redrawn. Can be used for overlay 247Called just before the screen gets redrawn. Can be used for overlay
102or similar effects by modify terminal contents in refresh_begin, and 248or similar effects by modify terminal contents in refresh_begin, and
105 251
106=item on_refresh_end $term 252=item on_refresh_end $term
107 253
108Called just after the screen gets redrawn. See C<on_refresh_begin>. 254Called just after the screen gets redrawn. See C<on_refresh_begin>.
109 255
256=item on_keyboard_command $term, $string
257
258Called whenever the user presses a key combination that has a
259C<perl:string> action bound to it (see description of the B<keysym>
260resource in the @@RXVT_NAME@@(1) manpage).
261
262=item on_focus_in $term
263
264Called whenever the window gets the keyboard focus, before rxvt-unicode
265does focus in processing.
266
267=item on_focus_out $term
268
269Called wheneever the window loses keyboard focus, before rxvt-unicode does
270focus out processing.
271
272=item on_key_press $term, $event, $octets
273
274=item on_key_release $term, $event
275
276=item on_button_press $term, $event
277
278=item on_button_release $term, $event
279
280=item on_motion_notify $term, $event
281
282=item on_map_notify $term, $event
283
284=item on_unmap_notify $term, $event
285
286Called whenever the corresponding X event is received for the terminal If
287the hook returns true, then the even will be ignored by rxvt-unicode.
288
289The event is a hash with most values as named by Xlib (see the XEvent
290manpage), with the additional members C<row> and C<col>, which are the row
291and column under the mouse cursor.
292
293C<on_key_press> additionally receives the string rxvt-unicode would
294output, if any, in locale-specific encoding.
295
296subwindow.
297
110=back 298=back
111 299
300=head2 Variables in the C<urxvt> Package
301
302=over 4
303
304=item $urxvt::TERM
305
306The current terminal. This variable stores the current C<urxvt::term>
307object, whenever a callback/hook is executing.
308
309=back
310
112=head2 Functions in the C<urxvt> Package 311=head2 Functions in the C<urxvt> Package
113 312
114=over 4 313=over 4
314
315=item $term = new urxvt [arg...]
316
317Creates a new terminal, very similar as if you had started it with
318C<system $binfile, arg...>. Croaks (and probably outputs an error message)
319if the new instance couldn't be created. Returns C<undef> if the new
320instance didn't initialise perl, and the terminal object otherwise. The
321C<init> and C<start> hooks will be called during the call.
115 322
116=item urxvt::fatal $errormessage 323=item urxvt::fatal $errormessage
117 324
118Fatally aborts execution with the given error message. Avoid at all 325Fatally aborts execution with the given error message. Avoid at all
119costs! The only time this is acceptable is when the terminal process 326costs! The only time this is acceptable is when the terminal process
120starts up. 327starts up.
121 328
122=item urxvt::warn $string 329=item urxvt::warn $string
123 330
124Calls C<rxvt_warn> witht eh given string which should not include a 331Calls C<rxvt_warn> with the given string which should not include a
125newline. The module also overwrites the C<warn> builtin with a function 332newline. The module also overwrites the C<warn> builtin with a function
126that calls this function. 333that calls this function.
127 334
128Using this function has the advantage that its output ends up in the 335Using this function has the advantage that its output ends up in the
129correct place, e.g. on stderr of the connecting urxvtc client. 336correct place, e.g. on stderr of the connecting urxvtc client.
130 337
131=item $cellwidth = urxvt::wcswidth $string 338=item $is_safe = urxvt::safe
132 339
133Returns the number of screen-cells this string would need. Correctly 340Returns true when it is safe to do potentially unsafe things, such as
134accounts for wide and combining characters. 341evaluating perl code specified by the user. This is true when urxvt was
342started setuid or setgid.
135 343
136=item $time = urxvt::NOW 344=item $time = urxvt::NOW
137 345
138Returns the "current time" (as per the event loop). 346Returns the "current time" (as per the event loop).
139 347
348=item urxvt::CurrentTime
349
350=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
351Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
352Button4Mask, Button5Mask, AnyModifier
353
354Various constants for use in X calls and event processing.
355
356=back
357
358=head2 RENDITION
359
360Rendition bitsets contain information about colour, font, font styles and
361similar information for each screen cell.
362
363The following "macros" deal with changes in rendition sets. You should
364never just create a bitset, you should always modify an existing one,
365as they contain important information required for correct operation of
366rxvt-unicode.
367
368=over 4
369
370=item $rend = urxvt::DEFAULT_RSTYLE
371
372Returns the default rendition, as used when the terminal is starting up or
373being reset. Useful as a base to start when creating renditions.
374
375=item $rend = urxvt::OVERLAY_RSTYLE
376
377Return the rendition mask used for overlays by default.
378
379=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
380
381Return the bit that enabled bold, italic, blink, reverse-video and
382underline, respectively. To enable such a style, just logically OR it into
383the bitset.
384
385=item $foreground = urxvt::GET_BASEFG $rend
386
387=item $background = urxvt::GET_BASEBG $rend
388
389Return the foreground/background colour index, respectively.
390
391=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)
392
393=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)
394
395Replace the foreground/background colour in the rendition mask with the
396specified one.
397
398=item $value = urxvt::GET_CUSTOM ($rend)
399
400Return the "custom" value: Every rendition has 5 bits for use by
401extensions. They can be set and changed as you like and are initially
402zero.
403
404=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)
405
406Change the custom value.
407
408=back
409
140=cut 410=cut
141 411
142package urxvt; 412package urxvt;
143 413
414use utf8;
144use strict; 415use strict;
416use Scalar::Util ();
417use List::Util ();
145 418
146our $term; 419our $VERSION = 1;
420our $TERM;
147our @HOOKNAME; 421our @HOOKNAME;
422our %OPTION;
148our $LIBDIR; 423our $LIBDIR;
149 424
150BEGIN { 425BEGIN {
151 urxvt->bootstrap; 426 urxvt->bootstrap;
152 427
155 my $msg = join "", @_; 430 my $msg = join "", @_;
156 $msg .= "\n" 431 $msg .= "\n"
157 unless $msg =~ /\n$/; 432 unless $msg =~ /\n$/;
158 urxvt::warn ($msg); 433 urxvt::warn ($msg);
159 }; 434 };
160}
161 435
436 delete $ENV{IFS};
437 delete $ENV{CDPATH};
438 delete $ENV{BASH_ENV};
439 $ENV{PATH} = "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/opt/bin:/opt/sbin";
440}
441
442my @hook_count;
162my $verbosity = $ENV{URXVT_PERL_VERBOSITY} || 10; 443my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
163 444
164sub verbose { 445sub verbose {
165 my ($level, $msg) = @_; 446 my ($level, $msg) = @_;
166 warn "$msg\n"; #d# 447 warn "$msg\n" if $level <= $verbosity;
167}
168
169my @invoke_cb;
170
171# called by the rxvt core
172sub invoke {
173 local $term = shift;
174 my $htype = shift;
175
176 my $cb = $invoke_cb[$htype];
177
178 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"
179 if $verbosity >= 10;
180
181 while (my ($k, $v) = each %$cb) {
182 return 1 if $v->($term, @_);
183 }
184
185 0
186} 448}
187 449
188# find on_xxx subs in the package and register them 450# find on_xxx subs in the package and register them
189# as hooks 451# as hooks
190sub register_package($) { 452sub register_package($) {
191 my ($pkg) = @_; 453 my ($pkg) = @_;
192 454
193 for my $hook (0.. $#HOOKNAME) { 455 for my $htype (0.. $#HOOKNAME) {
194 my $name = $HOOKNAME[$hook]; 456 my $name = $HOOKNAME[$htype];
195 457
196 my $ref = $pkg->can ("on_" . lc $name) 458 my $ref = $pkg->can ("on_" . lc $name)
197 or next; 459 or next;
198 460
199 $invoke_cb[$hook]{$ref*1} = $ref; 461 $TERM->{_hook}[$htype]{$pkg} = $ref;
462 $hook_count[$htype]++
200 set_should_invoke $hook, 1; 463 or set_should_invoke $htype, 1;
201 } 464 }
202} 465}
203 466
204my $script_pkg = "script0000"; 467my $extension_pkg = "extension0000";
205my %script_pkg; 468my %extension_pkg;
206 469
207# load a single script into its own package, once only 470# load a single script into its own package, once only
208sub load_script($) { 471sub extension_package($) {
209 my ($path) = @_; 472 my ($path) = @_;
210 473
211 $script_pkg{$path} ||= do { 474 $extension_pkg{$path} ||= do {
212 my $pkg = $script_pkg++; 475 my $pkg = "urxvt::" . ($extension_pkg++);
476
213 verbose 3, "loading script '$path' into package '$pkg'"; 477 verbose 3, "loading extension '$path' into package '$pkg'";
214 478
215 open my $fh, "<:raw", $path 479 open my $fh, "<:raw", $path
216 or die "$path: $!"; 480 or die "$path: $!";
217 481
218 eval "package $pkg; use strict; use utf8;\n" 482 my $source = untaint "package $pkg; use strict; use utf8;\n"
483 . "use base urxvt::term::proxy::;\n"
219 . "#line 1 \"$path\"\n" 484 . "#line 1 \"$path\"\n{\n"
220 . do { local $/; <$fh> } 485 . (do { local $/; <$fh> })
486 . "\n};\n1";
487
221 or die "$path: $@"; 488 eval $source or die "$path: $@";
222
223 register_package $pkg;
224 489
225 $pkg 490 $pkg
226 }; 491 }
227} 492}
228 493
229load_script $_ for grep -f $_, <$LIBDIR/perl-init/*>; 494our $retval; # return value for urxvt
230 495
496# called by the rxvt core
497sub invoke {
498 local $TERM = shift;
499 my $htype = shift;
231 500
232=back 501 if ($htype == 0) { # INIT
502 my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
503
504 my %want_ext;
505
506 for (map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
507 if ($_ eq "default") {
508 $want_ext{$_}++ for qw(selection option-popup selection-popup);
509 } elsif (/^-(.*)$/) {
510 delete $want_ext{$1};
511 } else {
512 $want_ext{$_}++;
513 }
514 }
515
516 for my $ext (keys %want_ext) {
517 my @files = grep -f $_, map "$_/$ext", @dirs;
518
519 if (@files) {
520 register_package extension_package $files[0];
521 } else {
522 warn "perl extension '$ext' not found in perl library search path\n";
523 }
524 }
525
526 eval "#line 1 \"--perl-eval resource/argument\"\n" . $TERM->resource ("perl_eval");
527 warn $@ if $@;
528 }
529
530 $retval = undef;
531
532 if (my $cb = $TERM->{_hook}[$htype]) {
533 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
534 if $verbosity >= 10;
535
536 keys %$cb;
537
538 while (my ($pkg, $cb) = each %$cb) {
539 eval {
540 $retval = $cb->(
541 $TERM->{_pkg}{$pkg} ||= do {
542 my $proxy = bless { }, $pkg;
543 Scalar::Util::weaken ($proxy->{term} = $TERM);
544 $proxy
545 },
546 @_,
547 ) and last;
548 };
549 if ($@) {
550 $TERM->ungrab; # better to lose the grab than the session
551 warn $@;
552 }
553 }
554 }
555
556 if ($htype == 1) { # DESTROY
557 # remove hooks if unused
558 if (my $hook = $TERM->{_hook}) {
559 for my $htype (0..$#$hook) {
560 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
561 or set_should_invoke $htype, 0;
562 }
563 }
564
565 # clear package objects
566 %$_ = () for values %{ $TERM->{_pkg} };
567
568 # clear package
569 %$TERM = ();
570 }
571
572 $retval
573}
574
575# urxvt::term::proxy
576
577sub urxvt::term::proxy::AUTOLOAD {
578 $urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/
579 or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";
580
581 eval qq{
582 sub $urxvt::term::proxy::AUTOLOAD {
583 my \$proxy = shift;
584 \$proxy->{term}->$1 (\@_)
585 }
586 1
587 } or die "FATAL: unable to compile method forwarder: $@";
588
589 goto &$urxvt::term::proxy::AUTOLOAD;
590}
591
592sub urxvt::term::proxy::DESTROY {
593 # nop
594}
595
596# urxvt::destroy_hook
597
598sub urxvt::destroy_hook::DESTROY {
599 ${$_[0]}->();
600}
601
602sub urxvt::destroy_hook(&) {
603 bless \shift, urxvt::destroy_hook::
604}
605
606package urxvt::anyevent;
607
608=head2 The C<urxvt::anyevent> Class
609
610The sole purpose of this class is to deliver an interface to the
611C<AnyEvent> module - any module using it will work inside urxvt without
612further work. The only exception is that you cannot wait on condition
613variables, but non-blocking condvar use is ok. What this means is that you
614cannot use blocking APIs, but the non-blocking variant should work.
615
616=cut
617
618our $VERSION = 1;
619
620$INC{"urxvt/anyevent.pm"} = 1; # mark us as there
621push @AnyEvent::REGISTRY, [urxvt => urxvt::anyevent::];
622
623sub timer {
624 my ($class, %arg) = @_;
625
626 my $cb = $arg{cb};
627
628 urxvt::timer
629 ->new
630 ->start (urxvt::NOW + $arg{after})
631 ->cb (sub {
632 $_[0]->stop; # need to cancel manually
633 $cb->();
634 })
635}
636
637sub io {
638 my ($class, %arg) = @_;
639
640 my $cb = $arg{cb};
641
642 bless [$arg{fh}, urxvt::iow
643 ->new
644 ->fd (fileno $arg{fh})
645 ->events (($arg{poll} =~ /r/ ? 1 : 0)
646 | ($arg{poll} =~ /w/ ? 2 : 0))
647 ->start
648 ->cb (sub {
649 $cb->(($_[1] & 1 ? 'r' : '')
650 . ($_[1] & 2 ? 'w' : ''));
651 })],
652 urxvt::anyevent::
653}
654
655sub DESTROY {
656 $_[0][1]->stop;
657}
658
659sub condvar {
660 bless \my $flag, urxvt::anyevent::condvar::
661}
662
663sub urxvt::anyevent::condvar::broadcast {
664 ${$_[0]}++;
665}
666
667sub urxvt::anyevent::condvar::wait {
668 unless (${$_[0]}) {
669 require Carp;
670 Carp::croak ("AnyEvent->condvar blocking wait unsupported in urxvt, use a non-blocking API");
671 }
672}
673
674package urxvt::term;
233 675
234=head2 The C<urxvt::term> Class 676=head2 The C<urxvt::term> Class
235 677
236=over 4 678=over 4
679
680=item $term->destroy
681
682Destroy the terminal object (close the window, free resources etc.).
683
684=item $isset = $term->option ($optval[, $set])
685
686Returns true if the option specified by C<$optval> is enabled, and
687optionally change it. All option values are stored by name in the hash
688C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
689
690Here is a a likely non-exhaustive list of option names, please see the
691source file F</src/optinc.h> to see the actual list:
692
693 borderLess console cursorBlink cursorUnderline hold iconic insecure
694 intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
695 pastableTabs pointerBlank reverseVideo scrollBar scrollBar_floating
696 scrollBar_right scrollTtyKeypress scrollTtyOutput scrollWithBuffer
697 secondaryScreen secondaryScroll skipBuiltinGlyphs transparent
698 tripleclickwords utmpInhibit visualBell
699
700=item $value = $term->resource ($name[, $newval])
701
702Returns the current resource value associated with a given name and
703optionally sets a new value. Setting values is most useful in the C<init>
704hook. Unset resources are returned and accepted as C<undef>.
705
706The new value must be properly encoded to a suitable character encoding
707before passing it to this method. Similarly, the returned value may need
708to be converted from the used encoding to text.
709
710Resource names are as defined in F<src/rsinc.h>. Colours can be specified
711as resource names of the form C<< color+<index> >>, e.g. C<color+5>. (will
712likely change).
713
714Please note that resource strings will currently only be freed when the
715terminal is destroyed, so changing options frequently will eat memory.
716
717Here is a a likely non-exhaustive list of resource names, not all of which
718are supported in every build, please see the source file F</src/rsinc.h>
719to see the actual list:
720
721 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
722 borderLess color cursorBlink cursorUnderline cutchars delete_key
723 display_name embed ext_bwidth fade font geometry hold iconName
724 imFont imLocale inputMethod insecure int_bwidth intensityStyles
725 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
726 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
727 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
728 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
729 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
730 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
731 shade term_name title transparent transparent_all tripleclickwords
732 utmpInhibit visualBell
733
734=cut
735
736sub resource($$;$) {
737 my ($self, $name) = (shift, shift);
738 unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
739 &urxvt::term::_resource
740}
741
742=item $rend = $term->rstyle ([$new_rstyle])
743
744Return and optionally change the current rendition. Text that is output by
745the terminal application will use this style.
746
747=item ($row, $col) = $term->screen_cur ([$row, $col])
748
749Return the current coordinates of the text cursor position and optionally
750set it (which is usually bad as applications don't expect that).
237 751
238=item ($row, $col) = $term->selection_mark ([$row, $col]) 752=item ($row, $col) = $term->selection_mark ([$row, $col])
239 753
240=item ($row, $col) = $term->selection_beg ([$row, $col]) 754=item ($row, $col) = $term->selection_beg ([$row, $col])
241 755
251 765
252=item $oldtext = $term->selection ([$newtext]) 766=item $oldtext = $term->selection ([$newtext])
253 767
254Return the current selection text and optionally replace it by C<$newtext>. 768Return the current selection text and optionally replace it by C<$newtext>.
255 769
256=item $term->scr_overlay ($x, $y, $text) 770#=item $term->overlay ($x, $y, $text)
257 771#
258Create a simple multi-line overlay box. See the next method for details. 772#Create a simple multi-line overlay box. See the next method for details.
773#
774#=cut
775#
776#sub urxvt::term::scr_overlay {
777# my ($self, $x, $y, $text) = @_;
778#
779# my @lines = split /\n/, $text;
780#
781# my $w = 0;
782# for (map $self->strwidth ($_), @lines) {
783# $w = $_ if $w < $_;
784# }
785#
786# $self->scr_overlay_new ($x, $y, $w, scalar @lines);
787# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
788#}
789
790=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
791
792Create a new (empty) overlay at the given position with the given
793width/height. C<$rstyle> defines the initial rendition style
794(default: C<OVERLAY_RSTYLE>).
795
796If C<$border> is C<2> (default), then a decorative border will be put
797around the box.
798
799If either C<$x> or C<$y> is negative, then this is counted from the
800right/bottom side, respectively.
801
802This method returns an urxvt::overlay object. The overlay will be visible
803as long as the perl object is referenced.
804
805The methods currently supported on C<urxvt::overlay> objects are:
806
807=over 4
808
809=item $overlay->set ($x, $y, $text, $rend)
810
811Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
812text in rxvt-unicode's special encoding and an array of rendition values
813at a specific position inside the overlay.
814
815=item $overlay->hide
816
817If visible, hide the overlay, but do not destroy it.
818
819=item $overlay->show
820
821If hidden, display the overlay again.
822
823=back
824
825=item $popup = $term->popup ($event)
826
827Creates a new C<urxvt::popup> object that implements a popup menu. The
828C<$event> I<must> be the event causing the menu to pop up (a button event,
829currently).
259 830
260=cut 831=cut
261 832
262sub urxvt::term::scr_overlay { 833sub popup {
263 my ($self, $x, $y, $text) = @_; 834 my ($self, $event) = @_;
264 835
265 my @lines = split /\n/, $text; 836 $self->grab ($event->{time}, 1)
837 or return;
266 838
267 my $w = 0; 839 my $popup = bless {
268 for (map urxvt::wcswidth $_, @lines) { 840 term => $self,
269 $w = $_ if $w < $_; 841 event => $event,
842 }, urxvt::popup::;
843
844 Scalar::Util::weaken $popup->{term};
845
846 $self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
847 Scalar::Util::weaken $self->{_destroy}{$popup};
848
849 $popup
850}
851
852=item $cellwidth = $term->strwidth ($string)
853
854Returns the number of screen-cells this string would need. Correctly
855accounts for wide and combining characters.
856
857=item $octets = $term->locale_encode ($string)
858
859Convert the given text string into the corresponding locale encoding.
860
861=item $string = $term->locale_decode ($octets)
862
863Convert the given locale-encoded octets into a perl string.
864
865=item $term->scr_add_lines ($string)
866
867Write the given text string to the screen, as if output by the application
868running inside the terminal. It may not contain command sequences (escape
869codes), but is free to use line feeds, carriage returns and tabs. The
870string is a normal text string, not in locale-dependent encoding.
871
872Normally its not a good idea to use this function, as programs might be
873confused by changes in cursor position or scrolling. Its useful inside a
874C<on_add_lines> hook, though.
875
876=item $term->cmd_parse ($octets)
877
878Similar to C<scr_add_lines>, but the argument must be in the
879locale-specific encoding of the terminal and can contain command sequences
880(escape codes) that will be interpreted.
881
882=item $term->tt_write ($octets)
883
884Write the octets given in C<$data> to the tty (i.e. as program input). To
885pass characters instead of octets, you should convert your strings first
886to the locale-specific encoding using C<< $term->locale_encode >>.
887
888=item $windowid = $term->parent
889
890Return the window id of the toplevel window.
891
892=item $windowid = $term->vt
893
894Return the window id of the terminal window.
895
896=item $window_width = $term->width
897
898=item $window_height = $term->height
899
900=item $font_width = $term->fwidth
901
902=item $font_height = $term->fheight
903
904=item $font_ascent = $term->fbase
905
906=item $terminal_rows = $term->nrow
907
908=item $terminal_columns = $term->ncol
909
910=item $has_focus = $term->focus
911
912=item $is_mapped = $term->mapped
913
914=item $max_scrollback = $term->saveLines
915
916=item $nrow_plus_saveLines = $term->total_rows
917
918=item $lines_in_scrollback = $term->nsaved
919
920Return various integers describing terminal characteristics.
921
922=item $modifiermask = $term->ModLevel3Mask
923
924=item $modifiermask = $term->ModMetaMask
925
926=item $modifiermask = $term->ModNumLockMask
927
928Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
929AltGr), the meta key (often Alt) and the num lock key, if applicable.
930
931=item $view_start = $term->view_start ([$newvalue])
932
933Returns the negative row number of the topmost line. Minimum value is
934C<0>, which displays the normal terminal contents. Larger values scroll
935this many lines into the scrollback buffer.
936
937=item $term->want_refresh
938
939Requests a screen refresh. At the next opportunity, rxvt-unicode will
940compare the on-screen display with its stored representation. If they
941differ, it redraws the differences.
942
943Used after changing terminal contents to display them.
944
945=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
946
947Returns the text of the entire row with number C<$row_number>. Row C<0>
948is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
949terminal line. The scrollback buffer starts at line C<-1> and extends to
950line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
951is requested.
952
953If C<$new_text> is specified, it will replace characters in the current
954line, starting at column C<$start_col> (default C<0>), which is useful
955to replace only parts of a line. The font index in the rendition will
956automatically be updated.
957
958C<$text> is in a special encoding: tabs and wide characters that use more
959than one cell when displayed are padded with urxvt::NOCHAR characters
960(C<chr 65535>). Characters with combining characters and other characters
961that do not fit into the normal tetx encoding will be replaced with
962characters in the private use area.
963
964You have to obey this encoding when changing text. The advantage is
965that C<substr> and similar functions work on screen cells and not on
966characters.
967
968The methods C<< $term->special_encode >> and C<< $term->special_decode >>
969can be used to convert normal strings into this encoding and vice versa.
970
971=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
972
973Like C<< $term->ROW_t >>, but returns an arrayref with rendition
974bitsets. Rendition bitsets contain information about colour, font, font
975styles and similar information. See also C<< $term->ROW_t >>.
976
977When setting rendition, the font mask will be ignored.
978
979See the section on RENDITION, above.
980
981=item $length = $term->ROW_l ($row_number[, $new_length])
982
983Returns the number of screen cells that are in use ("the line
984length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
985line is joined with the following one.
986
987=item $bool = $term->is_longer ($row_number)
988
989Returns true if the row is part of a multiple-row logical "line" (i.e.
990joined with the following row), which means all characters are in use
991and it is continued on the next row (and possibly a continuation of the
992previous row(s)).
993
994=item $line = $term->line ($row_number)
995
996Create and return a new C<urxvt::line> object that stores information
997about the logical line that row C<$row_number> is part of. It supports the
998following methods:
999
1000=over 4
1001
1002=item $text = $line->t ([$new_text])
1003
1004Returns or replaces the full text of the line, similar to C<ROW_t>
1005
1006=item $rend = $line->r ([$new_rend])
1007
1008Returns or replaces the full rendition array of the line, similar to C<ROW_r>
1009
1010=item $length = $line->l
1011
1012Returns the length of the line in cells, similar to C<ROW_l>.
1013
1014=item $rownum = $line->beg
1015
1016=item $rownum = $line->end
1017
1018Return the row number of the first/last row of the line, respectively.
1019
1020=item $offset = $line->offset_of ($row, $col)
1021
1022Returns the character offset of the given row|col pair within the logical
1023line.
1024
1025=item ($row, $col) = $line->coord_of ($offset)
1026
1027Translates a string offset into terminal coordinates again.
1028
1029=back
1030
1031=cut
1032
1033sub line {
1034 my ($self, $row) = @_;
1035
1036 my $maxrow = $self->nrow - 1;
1037
1038 my ($beg, $end) = ($row, $row);
1039
1040 --$beg while $self->ROW_is_longer ($beg - 1);
1041 ++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
1042
1043 bless {
1044 term => $self,
1045 beg => $beg,
1046 end => $end,
1047 ncol => $self->ncol,
1048 len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
1049 }, urxvt::line::
1050}
1051
1052sub urxvt::line::t {
1053 my ($self) = @_;
1054
1055 if (@_ > 1)
1056 {
1057 $self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
1058 for $self->{beg} .. $self->{end};
1059 }
1060
1061 defined wantarray &&
1062 substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
1063 0, $self->{len}
1064}
1065
1066sub urxvt::line::r {
1067 my ($self) = @_;
1068
1069 if (@_ > 1)
1070 {
1071 $self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
1072 for $self->{beg} .. $self->{end};
1073 }
1074
1075 if (defined wantarray) {
1076 my $rend = [
1077 map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
1078 ];
1079 $#$rend = $self->{len} - 1;
1080 return $rend;
270 } 1081 }
271 1082
272 $self->scr_overlay_new ($x, $y, $w, scalar @lines); 1083 ()
273 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
274} 1084}
275 1085
276=item $term->scr_overlay_new ($x, $y, $width, $height) 1086sub urxvt::line::beg { $_[0]{beg} }
1087sub urxvt::line::end { $_[0]{end} }
1088sub urxvt::line::l { $_[0]{len} }
277 1089
278Create a new (empty) overlay at the given position with the given 1090sub urxvt::line::offset_of {
279width/height. A border will be put around the box. If either C<$x> or 1091 my ($self, $row, $col) = @_;
280C<$y> is negative, then this is counted from the right/bottom side,
281respectively.
282 1092
283=item $term->scr_overlay_off 1093 ($row - $self->{beg}) * $self->{ncol} + $col
1094}
284 1095
285Switch the overlay off again. 1096sub urxvt::line::coord_of {
1097 my ($self, $offset) = @_;
286 1098
287=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE) 1099 use integer;
288 1100
289Put a single character (specified numerically) at the given overlay 1101 (
290position. 1102 $offset / $self->{ncol} + $self->{beg},
1103 $offset % $self->{ncol}
1104 )
1105}
291 1106
292=item $term->scr_overlay_set ($x, $y, $text) 1107=item $text = $term->special_encode $string
293 1108
294Write a string at the given position into the overlay. 1109Converts a perl string into the special encoding used by rxvt-unicode,
1110where one character corresponds to one screen cell. See
1111C<< $term->ROW_t >> for details.
1112
1113=item $string = $term->special_decode $text
1114
1115Converts rxvt-unicodes text reprsentation into a perl string. See
1116C<< $term->ROW_t >> for details.
1117
1118=item $success = $term->grab_button ($button, $modifiermask)
1119
1120Registers a synchronous button grab. See XGrabButton.
1121
1122=item $success = $term->grab ($eventtime[, $sync])
1123
1124Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
1125synchronous (C<$sync> is true). Also remembers the grab timestampe.
1126
1127=item $term->allow_events_async
1128
1129Calls XAllowEvents with AsyncBoth for the most recent grab.
1130
1131=item $term->allow_events_sync
1132
1133Calls XAllowEvents with SyncBoth for the most recent grab.
1134
1135=item $term->allow_events_replay
1136
1137Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
1138recent grab.
1139
1140=item $term->ungrab
1141
1142Calls XUngrab for the most recent grab. Is called automatically on
1143evaluation errors, as it is better to lose the grab in the error case as
1144the session.
295 1145
296=back 1146=back
1147
1148=cut
1149
1150package urxvt::popup;
1151
1152=head2 The C<urxvt::popup> Class
1153
1154=over 4
1155
1156=cut
1157
1158sub add_item {
1159 my ($self, $item) = @_;
1160
1161 $item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
1162 $item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
1163 $item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
1164
1165 $item->{render} ||= sub { $_[0]{text} };
1166
1167 push @{ $self->{item} }, $item;
1168}
1169
1170sub add_separator {
1171 my ($self, $sep) = @_;
1172
1173 $sep ||= "═";
1174
1175 $self->add_item ({
1176 rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
1177 text => "",
1178 render => sub { $sep x $urxvt::TERM->ncol },
1179 activate => sub { },
1180 });
1181}
1182
1183sub add_title {
1184 my ($self, $title) = @_;
1185
1186 $self->add_item ({
1187 rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
1188 text => $title,
1189 activate => sub { },
1190 });
1191}
1192
1193sub add_button {
1194 my ($self, $text, $cb) = @_;
1195
1196 $self->add_item ({ type => "button", text => "[ $text ]", activate => $cb});
1197}
1198
1199sub add_toggle {
1200 my ($self, $text, $cb, $value) = @_;
1201
1202 my $item; $item = {
1203 type => "button",
1204 text => " $text",
1205 value => $value,
1206 render => sub { ($_[0]{value} ? "* " : " ") . $text },
1207 activate => sub { $cb->($_[0]{value} = !$_[0]{value}); },
1208 };
1209
1210 $self->add_item ($item);
1211}
1212
1213sub show {
1214 my ($self) = @_;
1215
1216 local $urxvt::popup::self = $self;
1217
1218 urxvt->new ("--perl-lib" => "", "--perl-ext-common" => "", "-pty-fd" => -1, "-sl" => 0, "-b" => 0,
1219 "--transient-for" => $self->{term}->parent,
1220 "-pe" => "urxvt-popup")
1221 or die "unable to create popup window\n";
1222}
1223
1224sub DESTROY {
1225 my ($self) = @_;
1226
1227 delete $self->{term}{_destroy}{$self};
1228 $self->{term}->ungrab;
1229}
297 1230
298=head2 The C<urxvt::timer> Class 1231=head2 The C<urxvt::timer> Class
299 1232
300This class implements timer watchers/events. Time is represented as a 1233This class implements timer watchers/events. Time is represented as a
301fractional number of seconds since the epoch. Example: 1234fractional number of seconds since the epoch. Example:
302 1235
303 # create a digital clock display in upper right corner 1236 $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
304 $term->{timer} = urxvt::timer 1237 $term->{timer} = urxvt::timer
305 ->new 1238 ->new
306 ->start (urxvt::NOW) 1239 ->interval (1)
307 ->cb (sub { 1240 ->cb (sub {
308 my ($timer) = @_;
309 my $time = $timer->at;
310 $timer->start ($time + 1);
311 $self->scr_overlay (-1, 0, 1241 $term->{overlay}->set (0, 0,
312 POSIX::strftime "%H:%M:%S", localtime $time); 1242 sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
313 }); 1243 });
314 1244
315=over 4 1245=over 4
316 1246
317=item $timer = new urxvt::timer 1247=item $timer = new urxvt::timer
318 1248
319Create a new timer object in stopped state. 1249Create a new timer object in started state. It is scheduled to fire
1250immediately.
320 1251
321=item $timer = $timer->cb (sub { my ($timer) = @_; ... }) 1252=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
322 1253
323Set the callback to be called when the timer triggers. 1254Set the callback to be called when the timer triggers.
324 1255
327Return the time this watcher will fire next. 1258Return the time this watcher will fire next.
328 1259
329=item $timer = $timer->set ($tstamp) 1260=item $timer = $timer->set ($tstamp)
330 1261
331Set the time the event is generated to $tstamp. 1262Set the time the event is generated to $tstamp.
1263
1264=item $timer = $timer->interval ($interval)
1265
1266Normally (and when C<$interval> is C<0>), the timer will automatically
1267stop after it has fired once. If C<$interval> is non-zero, then the timer
1268is automatically rescheduled at the given intervals.
332 1269
333=item $timer = $timer->start 1270=item $timer = $timer->start
334 1271
335Start the timer. 1272Start the timer.
336 1273
390 1327
391Stop watching for events on the given filehandle. 1328Stop watching for events on the given filehandle.
392 1329
393=back 1330=back
394 1331
1332=head1 ENVIRONMENT
1333
1334=head2 URXVT_PERL_VERBOSITY
1335
1336This variable controls the verbosity level of the perl extension. Higher
1337numbers indicate more verbose output.
1338
1339=over 4
1340
1341=item == 0 - fatal messages
1342
1343=item >= 3 - script loading and management
1344
1345=item >=10 - all events received
1346
1347=back
1348
395=head1 AUTHOR 1349=head1 AUTHOR
396 1350
397 Marc Lehmann <pcg@goof.com> 1351 Marc Lehmann <pcg@goof.com>
398 http://software.schmorp.de/pkg/rxvt-unicode 1352 http://software.schmorp.de/pkg/rxvt-unicode
399 1353

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