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Revision 1.3 by root, Mon Jan 2 15:59:25 2006 UTC vs.
Revision 1.67 by root, Mon Jan 9 19:29:06 2006 UTC

1=encoding utf8
2
1=head1 NAME 3=head1 NAME
2 4
3rxvtperl - 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* Each script will only be loaded once, even in urxvtd, and will be valid
10globally.
11
12* Scripts are evaluated in a 'use strict' and 'use utf8' environment, and
13thus must be encoded as 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;
17 () 13 ()
18 } 14 }
19 15
20 1 16 # start a @@RXVT_NAME@@ using it:
17
18 @@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
21 19
22=head1 DESCRIPTION 20=head1 DESCRIPTION
23 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
24=head2 Hooks 129=head2 Hooks
25 130
26The following subroutines can be declared in loaded scripts, and will be called 131The following subroutines can be declared in extension files, and will be
27whenever 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.
28 140
29All 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
30counts 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,
31and 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.
32 144
35=over 4 147=over 4
36 148
37=item on_init $term 149=item on_init $term
38 150
39Called after a new terminal object has been initialized, but before 151Called after a new terminal object has been initialized, but before
40windows 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.
41 156
42=item on_reset $term 157=item on_reset $term
43 158
44Called 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
45control 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
65requested from the server. The selection text can be queried and changed 180requested from the server. The selection text can be queried and changed
66by calling C<< $term->selection >>. 181by calling C<< $term->selection >>.
67 182
68Returning a true value aborts selection grabbing. It will still be hilighted. 183Returning a true value aborts selection grabbing. It will still be hilighted.
69 184
70=item on_focus_in $term 185=item on_sel_extend $term
71 186
72Called whenever the window gets the keyboard focus, before urxvt does 187Called whenever the user tries to extend the selection (e.g. with a double
73focus in processing. 188click) and is either supposed to return false (normal operation), or
74 189should extend the selection itelf and return true to suppress the built-in
75=item on_focus_out $term
76
77Called wheneever the window loses keyboard focus, before urxvt does focus
78out processing. 190processing.
191
192See the F<selection> example extension.
79 193
80=item on_view_change $term, $offset 194=item on_view_change $term, $offset
81 195
82Called whenever the view offset changes, i..e the user or program 196Called whenever the view offset changes, i..e the user or program
83scrolls. Offset C<0> means display the normal terminal, positive values 197scrolls. Offset C<0> means display the normal terminal, positive values
91 205
92It is called before lines are scrolled out (so rows 0 .. min ($lines - 1, 206It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
93$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
94number of lines that will be in the scrollback buffer. 208number of lines that will be in the scrollback buffer.
95 209
96=item on_tty_activity $term *NYI* 210=item on_osc_seq $term, $string
97 211
98Called 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.
99 244
100=item on_refresh_begin $term 245=item on_refresh_begin $term
101 246
102Called just before the screen gets redrawn. Can be used for overlay 247Called just before the screen gets redrawn. Can be used for overlay
103or similar effects by modify terminal contents in refresh_begin, and 248or similar effects by modify terminal contents in refresh_begin, and
106 251
107=item on_refresh_end $term 252=item on_refresh_end $term
108 253
109Called just after the screen gets redrawn. See C<on_refresh_begin>. 254Called just after the screen gets redrawn. See C<on_refresh_begin>.
110 255
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
111=back 298=back
112 299
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
113=head2 Functions in the C<urxvt> Package 311=head2 Functions in the C<urxvt> Package
114 312
115=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.
116 322
117=item urxvt::fatal $errormessage 323=item urxvt::fatal $errormessage
118 324
119Fatally aborts execution with the given error message. Avoid at all 325Fatally aborts execution with the given error message. Avoid at all
120costs! The only time this is acceptable is when the terminal process 326costs! The only time this is acceptable is when the terminal process
121starts up. 327starts up.
122 328
123=item urxvt::warn $string 329=item urxvt::warn $string
124 330
125Calls 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
126newline. The module also overwrites the C<warn> builtin with a function 332newline. The module also overwrites the C<warn> builtin with a function
127that calls this function. 333that calls this function.
128 334
129Using 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
130correct place, e.g. on stderr of the connecting urxvtc client. 336correct place, e.g. on stderr of the connecting urxvtc client.
131 337
132=item $cellwidth = urxvt::wcswidth $string 338=item $is_safe = urxvt::safe
133 339
134Returns the number of screen-cells this string would need. Correctly 340Returns true when it is safe to do potentially unsafe things, such as
135accounts for wide and combining characters. 341evaluating perl code specified by the user. This is true when urxvt was
342started setuid or setgid.
136 343
137=item $time = urxvt::NOW 344=item $time = urxvt::NOW
138 345
139Returns the "current time" (as per the event loop). 346Returns the "current time" (as per the event loop).
140 347
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
141=cut 410=cut
142 411
143package urxvt; 412package urxvt;
144 413
414use utf8;
145use strict; 415use strict;
416use Scalar::Util ();
417use List::Util ();
146 418
147our $term; 419our $VERSION = 1;
420our $TERM;
148our @HOOKNAME; 421our @HOOKNAME;
422our %OPTION;
149our $LIBDIR; 423our $LIBDIR;
150 424
151BEGIN { 425BEGIN {
152 urxvt->bootstrap; 426 urxvt->bootstrap;
153 427
156 my $msg = join "", @_; 430 my $msg = join "", @_;
157 $msg .= "\n" 431 $msg .= "\n"
158 unless $msg =~ /\n$/; 432 unless $msg =~ /\n$/;
159 urxvt::warn ($msg); 433 urxvt::warn ($msg);
160 }; 434 };
161}
162 435
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;
163my $verbosity = $ENV{URXVT_PERL_VERBOSITY} || 10; 443my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
164 444
165sub verbose { 445sub verbose {
166 my ($level, $msg) = @_; 446 my ($level, $msg) = @_;
167 warn "$msg\n"; #d# 447 warn "$msg\n" if $level <= $verbosity;
168}
169
170my @invoke_cb;
171
172# called by the rxvt core
173sub invoke {
174 local $term = shift;
175 my $htype = shift;
176
177 my $cb = $invoke_cb[$htype];
178
179 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"
180 if $verbosity >= 10;
181
182 while (my ($k, $v) = each %$cb) {
183 return 1 if $v->($term, @_);
184 }
185
186 0
187} 448}
188 449
189# find on_xxx subs in the package and register them 450# find on_xxx subs in the package and register them
190# as hooks 451# as hooks
191sub register_package($) { 452sub register_package($) {
192 my ($pkg) = @_; 453 my ($pkg) = @_;
193 454
194 for my $hook (0.. $#HOOKNAME) { 455 for my $htype (0.. $#HOOKNAME) {
195 my $name = $HOOKNAME[$hook]; 456 my $name = $HOOKNAME[$htype];
196 457
197 my $ref = $pkg->can ("on_" . lc $name) 458 my $ref = $pkg->can ("on_" . lc $name)
198 or next; 459 or next;
199 460
200 $invoke_cb[$hook]{$ref*1} = $ref; 461 $TERM->{_hook}[$htype]{$pkg} = $ref;
462 $hook_count[$htype]++
201 set_should_invoke $hook, 1; 463 or set_should_invoke $htype, 1;
202 } 464 }
203} 465}
204 466
205my $script_pkg = "script0000"; 467my $extension_pkg = "extension0000";
206my %script_pkg; 468my %extension_pkg;
207 469
208# load a single script into its own package, once only 470# load a single script into its own package, once only
209sub load_script($) { 471sub extension_package($) {
210 my ($path) = @_; 472 my ($path) = @_;
211 473
212 $script_pkg{$path} ||= do { 474 $extension_pkg{$path} ||= do {
213 my $pkg = $script_pkg++; 475 my $pkg = "urxvt::" . ($extension_pkg++);
476
214 verbose 3, "loading script '$path' into package '$pkg'"; 477 verbose 3, "loading extension '$path' into package '$pkg'";
215 478
216 open my $fh, "<:raw", $path 479 open my $fh, "<:raw", $path
217 or die "$path: $!"; 480 or die "$path: $!";
218 481
219 eval "package $pkg; use strict; use utf8;\n" 482 my $source = untaint "package $pkg; use strict; use utf8;\n"
483 . "use base urxvt::term::proxy::;\n"
220 . "#line 1 \"$path\"\n" 484 . "#line 1 \"$path\"\n{\n"
221 . do { local $/; <$fh> } 485 . (do { local $/; <$fh> })
486 . "\n};\n1";
487
222 or die "$path: $@"; 488 eval $source or die "$path: $@";
223
224 register_package $pkg;
225 489
226 $pkg 490 $pkg
227 }; 491 }
228} 492}
229 493
230load_script $_ for grep -f $_, <$LIBDIR/perl-ext/*>; 494our $retval; # return value for urxvt
231 495
496# called by the rxvt core
497sub invoke {
498 local $TERM = shift;
499 my $htype = shift;
232 500
233=back 501 if ($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;
234 675
235=head2 The C<urxvt::term> Class 676=head2 The C<urxvt::term> Class
236 677
237=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, $col])
748
749Return the current coordinates of the text cursor position and optionally
750set it (which is usually bad as applications don't expect that).
238 751
239=item ($row, $col) = $term->selection_mark ([$row, $col]) 752=item ($row, $col) = $term->selection_mark ([$row, $col])
240 753
241=item ($row, $col) = $term->selection_beg ([$row, $col]) 754=item ($row, $col) = $term->selection_beg ([$row, $col])
242 755
252 765
253=item $oldtext = $term->selection ([$newtext]) 766=item $oldtext = $term->selection ([$newtext])
254 767
255Return the current selection text and optionally replace it by C<$newtext>. 768Return the current selection text and optionally replace it by C<$newtext>.
256 769
257=item $term->scr_overlay ($x, $y, $text) 770#=item $term->overlay ($x, $y, $text)
258 771#
259Create a simple multi-line overlay box. See the next method for details. 772#Create a simple multi-line overlay box. See the next method for details.
773#
774#=cut
775#
776#sub urxvt::term::scr_overlay {
777# my ($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<$event> I<must> be the event causing the menu to pop up (a button event,
829currently).
260 830
261=cut 831=cut
262 832
263sub urxvt::term::scr_overlay { 833sub popup {
264 my ($self, $x, $y, $text) = @_; 834 my ($self, $event) = @_;
265 835
266 my @lines = split /\n/, $text; 836 $self->grab ($event->{time}, 1)
837 or return;
267 838
268 my $w = 0; 839 my $popup = bless {
269 for (map urxvt::wcswidth $_, @lines) { 840 term => $self,
270 $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 $lc_ctype = $term->locale
923
924Returns the LC_CTYPE category string used by this rxvt-unicode.
925
926=item $x_display = $term->display_id
927
928Return the DISPLAY used by rxvt-unicode.
929
930=item $modifiermask = $term->ModLevel3Mask
931
932=item $modifiermask = $term->ModMetaMask
933
934=item $modifiermask = $term->ModNumLockMask
935
936Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
937AltGr), the meta key (often Alt) and the num lock key, if applicable.
938
939=item $view_start = $term->view_start ([$newvalue])
940
941Returns the negative row number of the topmost line. Minimum value is
942C<0>, which displays the normal terminal contents. Larger values scroll
943this many lines into the scrollback buffer.
944
945=item $term->want_refresh
946
947Requests a screen refresh. At the next opportunity, rxvt-unicode will
948compare the on-screen display with its stored representation. If they
949differ, it redraws the differences.
950
951Used after changing terminal contents to display them.
952
953=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
954
955Returns the text of the entire row with number C<$row_number>. Row C<0>
956is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
957terminal line. The scrollback buffer starts at line C<-1> and extends to
958line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
959is requested.
960
961If C<$new_text> is specified, it will replace characters in the current
962line, starting at column C<$start_col> (default C<0>), which is useful
963to replace only parts of a line. The font index in the rendition will
964automatically be updated.
965
966C<$text> is in a special encoding: tabs and wide characters that use more
967than one cell when displayed are padded with urxvt::NOCHAR characters
968(C<chr 65535>). Characters with combining characters and other characters
969that do not fit into the normal tetx encoding will be replaced with
970characters in the private use area.
971
972You have to obey this encoding when changing text. The advantage is
973that C<substr> and similar functions work on screen cells and not on
974characters.
975
976The methods C<< $term->special_encode >> and C<< $term->special_decode >>
977can be used to convert normal strings into this encoding and vice versa.
978
979=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
980
981Like C<< $term->ROW_t >>, but returns an arrayref with rendition
982bitsets. Rendition bitsets contain information about colour, font, font
983styles and similar information. See also C<< $term->ROW_t >>.
984
985When setting rendition, the font mask will be ignored.
986
987See the section on RENDITION, above.
988
989=item $length = $term->ROW_l ($row_number[, $new_length])
990
991Returns the number of screen cells that are in use ("the line
992length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
993line is joined with the following one.
994
995=item $bool = $term->is_longer ($row_number)
996
997Returns true if the row is part of a multiple-row logical "line" (i.e.
998joined with the following row), which means all characters are in use
999and it is continued on the next row (and possibly a continuation of the
1000previous row(s)).
1001
1002=item $line = $term->line ($row_number)
1003
1004Create and return a new C<urxvt::line> object that stores information
1005about the logical line that row C<$row_number> is part of. It supports the
1006following methods:
1007
1008=over 4
1009
1010=item $text = $line->t ([$new_text])
1011
1012Returns or replaces the full text of the line, similar to C<ROW_t>
1013
1014=item $rend = $line->r ([$new_rend])
1015
1016Returns or replaces the full rendition array of the line, similar to C<ROW_r>
1017
1018=item $length = $line->l
1019
1020Returns the length of the line in cells, similar to C<ROW_l>.
1021
1022=item $rownum = $line->beg
1023
1024=item $rownum = $line->end
1025
1026Return the row number of the first/last row of the line, respectively.
1027
1028=item $offset = $line->offset_of ($row, $col)
1029
1030Returns the character offset of the given row|col pair within the logical
1031line.
1032
1033=item ($row, $col) = $line->coord_of ($offset)
1034
1035Translates a string offset into terminal coordinates again.
1036
1037=back
1038
1039=cut
1040
1041sub line {
1042 my ($self, $row) = @_;
1043
1044 my $maxrow = $self->nrow - 1;
1045
1046 my ($beg, $end) = ($row, $row);
1047
1048 --$beg while $self->ROW_is_longer ($beg - 1);
1049 ++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
1050
1051 bless {
1052 term => $self,
1053 beg => $beg,
1054 end => $end,
1055 ncol => $self->ncol,
1056 len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
1057 }, urxvt::line::
1058}
1059
1060sub urxvt::line::t {
1061 my ($self) = @_;
1062
1063 if (@_ > 1)
1064 {
1065 $self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
1066 for $self->{beg} .. $self->{end};
1067 }
1068
1069 defined wantarray &&
1070 substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
1071 0, $self->{len}
1072}
1073
1074sub urxvt::line::r {
1075 my ($self) = @_;
1076
1077 if (@_ > 1)
1078 {
1079 $self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
1080 for $self->{beg} .. $self->{end};
1081 }
1082
1083 if (defined wantarray) {
1084 my $rend = [
1085 map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
1086 ];
1087 $#$rend = $self->{len} - 1;
1088 return $rend;
271 } 1089 }
272 1090
273 $self->scr_overlay_new ($x, $y, $w, scalar @lines); 1091 ()
274 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
275} 1092}
276 1093
277=item $term->scr_overlay_new ($x, $y, $width, $height) 1094sub urxvt::line::beg { $_[0]{beg} }
1095sub urxvt::line::end { $_[0]{end} }
1096sub urxvt::line::l { $_[0]{len} }
278 1097
279Create a new (empty) overlay at the given position with the given 1098sub urxvt::line::offset_of {
280width/height. A border will be put around the box. If either C<$x> or 1099 my ($self, $row, $col) = @_;
281C<$y> is negative, then this is counted from the right/bottom side,
282respectively.
283 1100
284=item $term->scr_overlay_off 1101 ($row - $self->{beg}) * $self->{ncol} + $col
1102}
285 1103
286Switch the overlay off again. 1104sub urxvt::line::coord_of {
1105 my ($self, $offset) = @_;
287 1106
288=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE) 1107 use integer;
289 1108
290Put a single character (specified numerically) at the given overlay 1109 (
291position. 1110 $offset / $self->{ncol} + $self->{beg},
1111 $offset % $self->{ncol}
1112 )
1113}
292 1114
293=item $term->scr_overlay_set ($x, $y, $text) 1115=item $text = $term->special_encode $string
294 1116
295Write a string at the given position into the overlay. 1117Converts a perl string into the special encoding used by rxvt-unicode,
1118where one character corresponds to one screen cell. See
1119C<< $term->ROW_t >> for details.
1120
1121=item $string = $term->special_decode $text
1122
1123Converts rxvt-unicodes text reprsentation into a perl string. See
1124C<< $term->ROW_t >> for details.
1125
1126=item $success = $term->grab_button ($button, $modifiermask)
1127
1128Registers a synchronous button grab. See the XGrabButton manpage.
1129
1130=item $success = $term->grab ($eventtime[, $sync])
1131
1132Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
1133synchronous (C<$sync> is true). Also remembers the grab timestampe.
1134
1135=item $term->allow_events_async
1136
1137Calls XAllowEvents with AsyncBoth for the most recent grab.
1138
1139=item $term->allow_events_sync
1140
1141Calls XAllowEvents with SyncBoth for the most recent grab.
1142
1143=item $term->allow_events_replay
1144
1145Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
1146recent grab.
1147
1148=item $term->ungrab
1149
1150Calls XUngrab for the most recent grab. Is called automatically on
1151evaluation errors, as it is better to lose the grab in the error case as
1152the session.
296 1153
297=back 1154=back
1155
1156=cut
1157
1158package urxvt::popup;
1159
1160=head2 The C<urxvt::popup> Class
1161
1162=over 4
1163
1164=cut
1165
1166sub add_item {
1167 my ($self, $item) = @_;
1168
1169 $item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
1170 $item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
1171 $item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
1172
1173 $item->{render} ||= sub { $_[0]{text} };
1174
1175 push @{ $self->{item} }, $item;
1176}
1177
1178sub add_separator {
1179 my ($self, $sep) = @_;
1180
1181 $sep ||= "=";
1182
1183 $self->add_item ({
1184 rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
1185 text => "",
1186 render => sub { $sep x $self->{term}->ncol },
1187 activate => sub { },
1188 });
1189}
1190
1191sub add_title {
1192 my ($self, $title) = @_;
1193
1194 $self->add_item ({
1195 rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
1196 text => $title,
1197 activate => sub { },
1198 });
1199}
1200
1201sub add_button {
1202 my ($self, $text, $cb) = @_;
1203
1204 $self->add_item ({ type => "button", text => $text, activate => $cb});
1205}
1206
1207sub add_toggle {
1208 my ($self, $text, $cb, $value) = @_;
1209
1210 my $item; $item = {
1211 type => "button",
1212 text => " $text",
1213 value => $value,
1214 render => sub { ($_[0]{value} ? "* " : " ") . $text },
1215 activate => sub { $cb->($_[0]{value} = !$_[0]{value}); },
1216 };
1217
1218 $self->add_item ($item);
1219}
1220
1221sub show {
1222 my ($self) = @_;
1223
1224 local $urxvt::popup::self = $self;
1225
1226 local $ENV{LC_ALL} = $self->{term}->locale;
1227
1228 urxvt->new ("--perl-lib" => "", "--perl-ext-common" => "", "-pty-fd" => -1, "-sl" => 0, "-b" => 0,
1229 "--transient-for" => $self->{term}->parent,
1230 "-display" => $self->{term}->display_id,
1231 "-pe" => "urxvt-popup")
1232 or die "unable to create popup window\n";
1233}
1234
1235sub DESTROY {
1236 my ($self) = @_;
1237
1238 delete $self->{term}{_destroy}{$self};
1239 $self->{term}->ungrab;
1240}
298 1241
299=head2 The C<urxvt::timer> Class 1242=head2 The C<urxvt::timer> Class
300 1243
301This class implements timer watchers/events. Time is represented as a 1244This class implements timer watchers/events. Time is represented as a
302fractional number of seconds since the epoch. Example: 1245fractional number of seconds since the epoch. Example:
303 1246
304 # create a digital clock display in upper right corner 1247 $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
305 $term->{timer} = urxvt::timer 1248 $term->{timer} = urxvt::timer
306 ->new 1249 ->new
307 ->start (urxvt::NOW) 1250 ->interval (1)
308 ->cb (sub { 1251 ->cb (sub {
309 my ($timer) = @_;
310 my $time = $timer->at;
311 $timer->start ($time + 1);
312 $self->scr_overlay (-1, 0, 1252 $term->{overlay}->set (0, 0,
313 POSIX::strftime "%H:%M:%S", localtime $time); 1253 sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
314 }); 1254 });
315 1255
316=over 4 1256=over 4
317 1257
318=item $timer = new urxvt::timer 1258=item $timer = new urxvt::timer
319 1259
320Create a new timer object in stopped state. 1260Create a new timer object in started state. It is scheduled to fire
1261immediately.
321 1262
322=item $timer = $timer->cb (sub { my ($timer) = @_; ... }) 1263=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
323 1264
324Set the callback to be called when the timer triggers. 1265Set the callback to be called when the timer triggers.
325 1266
328Return the time this watcher will fire next. 1269Return the time this watcher will fire next.
329 1270
330=item $timer = $timer->set ($tstamp) 1271=item $timer = $timer->set ($tstamp)
331 1272
332Set the time the event is generated to $tstamp. 1273Set the time the event is generated to $tstamp.
1274
1275=item $timer = $timer->interval ($interval)
1276
1277Normally (and when C<$interval> is C<0>), the timer will automatically
1278stop after it has fired once. If C<$interval> is non-zero, then the timer
1279is automatically rescheduled at the given intervals.
333 1280
334=item $timer = $timer->start 1281=item $timer = $timer->start
335 1282
336Start the timer. 1283Start the timer.
337 1284
391 1338
392Stop watching for events on the given filehandle. 1339Stop watching for events on the given filehandle.
393 1340
394=back 1341=back
395 1342
1343=head1 ENVIRONMENT
1344
1345=head2 URXVT_PERL_VERBOSITY
1346
1347This variable controls the verbosity level of the perl extension. Higher
1348numbers indicate more verbose output.
1349
1350=over 4
1351
1352=item == 0 - fatal messages
1353
1354=item >= 3 - script loading and management
1355
1356=item >=10 - all events received
1357
1358=back
1359
396=head1 AUTHOR 1360=head1 AUTHOR
397 1361
398 Marc Lehmann <pcg@goof.com> 1362 Marc Lehmann <pcg@goof.com>
399 http://software.schmorp.de/pkg/rxvt-unicode 1363 http://software.schmorp.de/pkg/rxvt-unicode
400 1364

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