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Revision 1.12 by root, Mon Jan 2 22:23:26 2006 UTC vs.
Revision 1.30 by root, Wed Jan 4 05:35:34 2006 UTC

1=encoding utf8
2
1=head1 NAME 3=head1 NAME
2 4
3@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter 5@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter
4 6
5=head1 SYNOPSIS 7=head1 SYNOPSIS
22 24
23Scripts are compiled in a 'use strict' and 'use utf8' environment, and 25Scripts are compiled in a 'use strict' and 'use utf8' environment, and
24thus must be encoded as UTF-8. 26thus must be encoded as UTF-8.
25 27
26Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where 28Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
27scripts will be shared (But not enabled) for all terminals. 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
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 digital-clock
62
63Displays a digital clock using the built-in overlay.
64
65=item example-refresh-hooks
66
67Displays a very simple digital clock in the upper right corner of the
68window. Illustrates overwriting the refresh callbacks to create your own
69overlays or changes.
70
71=back
28 72
29=head2 General API Considerations 73=head2 General API Considerations
30 74
31All objects (such as terminals, time watchers etc.) are typical 75All objects (such as terminals, time watchers etc.) are typical
32reference-to-hash objects. The hash can be used to store anything you 76reference-to-hash objects. The hash can be used to store anything you
33like. All members starting with an underscore (such as C<_ptr> or 77like. All members starting with an underscore (such as C<_ptr> or
34C<_hook>) are reserved for internal uses and must not be accessed or 78C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
35modified). 79modified).
36 80
37When objects are destroyed on the C++ side, the perl object hashes are 81When objects are destroyed on the C++ side, the perl object hashes are
38emptied, so its best to store related objects such as time watchers and 82emptied, so its best to store related objects such as time watchers and
39the like inside the terminal object so they get destroyed as soon as the 83the like inside the terminal object so they get destroyed as soon as the
40terminal is destroyed. 84terminal is destroyed.
41 85
42=head2 Hooks 86=head2 Hooks
43 87
44The following subroutines can be declared in loaded scripts, and will be called 88The following subroutines can be declared in loaded scripts, and will be
45whenever the relevant event happens. 89called whenever the relevant event happens.
90
91The first argument passed to them is an object private to each terminal
92and extension package. You can call all C<urxvt::term> methods on it, but
93its not a real C<urxvt::term> object. Instead, the real C<urxvt::term>
94object that is shared between all packages is stored in the C<term>
95member.
46 96
47All of them must return a boolean value. If it is true, then the event 97All of them must return a boolean value. If it is true, then the event
48counts as being I<consumed>, and the invocation of other hooks is skipped, 98counts as being I<consumed>, and the invocation of other hooks is skipped,
49and the relevant action might not be carried out by the C++ code. 99and the relevant action might not be carried out by the C++ code.
50 100
83requested from the server. The selection text can be queried and changed 133requested from the server. The selection text can be queried and changed
84by calling C<< $term->selection >>. 134by calling C<< $term->selection >>.
85 135
86Returning a true value aborts selection grabbing. It will still be hilighted. 136Returning a true value aborts selection grabbing. It will still be hilighted.
87 137
138=item on_sel_extend $term
139
140Called whenever the user tries to extend the selection (e.g. with a double
141click) and is either supposed to return false (normal operation), or
142should extend the selection itelf and return true to suppress the built-in
143processing.
144
145See the F<selection> example extension.
146
88=item on_focus_in $term 147=item on_focus_in $term
89 148
90Called whenever the window gets the keyboard focus, before urxvt does 149Called whenever the window gets the keyboard focus, before urxvt does
91focus in processing. 150focus in processing.
92 151
112number of lines that will be in the scrollback buffer. 171number of lines that will be in the scrollback buffer.
113 172
114=item on_tty_activity $term *NYI* 173=item on_tty_activity $term *NYI*
115 174
116Called whenever the program(s) running in the urxvt window send output. 175Called whenever the program(s) running in the urxvt window send output.
176
177=item on_osc_seq $term, $string
178
179Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
180operating system command) is processed. Cursor position and other state
181information is up-to-date when this happens. For interoperability, the
182string should start with the extension name and a colon, to distinguish
183it from commands for other extensions, and this might be enforced in the
184future.
185
186Be careful not ever to trust (in a security sense) the data you receive,
187as its source can not easily be controleld (e-mail content, messages from
188other users on the same system etc.).
117 189
118=item on_refresh_begin $term 190=item on_refresh_begin $term
119 191
120Called just before the screen gets redrawn. Can be used for overlay 192Called just before the screen gets redrawn. Can be used for overlay
121or similar effects by modify terminal contents in refresh_begin, and 193or similar effects by modify terminal contents in refresh_begin, and
132C<perl:string> action bound to it (see description of the B<keysym> 204C<perl:string> action bound to it (see description of the B<keysym>
133resource in the @@RXVT_NAME@@(1) manpage). 205resource in the @@RXVT_NAME@@(1) manpage).
134 206
135=back 207=back
136 208
209=head2 Variables in the C<urxvt> Package
210
211=over 4
212
213=item $urxvt::TERM
214
215The current terminal. Whenever a callback/Hook is bein executed, this
216variable stores the current C<urxvt::term> object.
217
218=back
219
137=head2 Functions in the C<urxvt> Package 220=head2 Functions in the C<urxvt> Package
138 221
139=over 4 222=over 4
140 223
141=item urxvt::fatal $errormessage 224=item urxvt::fatal $errormessage
155 238
156=item $time = urxvt::NOW 239=item $time = urxvt::NOW
157 240
158Returns the "current time" (as per the event loop). 241Returns the "current time" (as per the event loop).
159 242
243=back
244
245=head2 RENDITION
246
247Rendition bitsets contain information about colour, font, font styles and
248similar information for each screen cell.
249
250The following "macros" deal with changes in rendition sets. You should
251never just create a bitset, you should always modify an existing one,
252as they contain important information required for correct operation of
253rxvt-unicode.
254
255=over 4
256
257=item $rend = urxvt::DEFAULT_RSTYLE
258
259Returns the default rendition, as used when the terminal is starting up or
260being reset. Useful as a base to start when creating renditions.
261
262=item $rend = urxvt::OVERLAY_RSTYLE
263
264Return the rendition mask used for overlays by default.
265
266=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
267
268Return the bit that enabled bold, italic, blink, reverse-video and
269underline, respectively. To enable such a style, just logically OR it into
270the bitset.
271
272=item $foreground = urxvt::GET_BASEFG $rend
273
274=item $background = urxvt::GET_BASEBG $rend
275
276Return the foreground/background colour index, respectively.
277
278=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)
279
280=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)
281
282Replace the foreground/background colour in the rendition mask with the
283specified one.
284
285=item $value = urxvt::GET_CUSTOM ($rend)
286
287Return the "custom" value: Every rendition has 5 bits for use by
288extensions. They can be set and changed as you like and are initially
289zero.
290
291=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)
292
293Change the custom value.
294
295=back
296
160=cut 297=cut
161 298
162package urxvt; 299package urxvt;
163 300
164use strict; 301use strict;
302use Scalar::Util ();
165 303
166our $term; 304our $TERM;
167our @HOOKNAME; 305our @HOOKNAME;
168our $LIBDIR; 306our $LIBDIR;
169 307
170BEGIN { 308BEGIN {
171 urxvt->bootstrap; 309 urxvt->bootstrap;
196 my $name = $HOOKNAME[$htype]; 334 my $name = $HOOKNAME[$htype];
197 335
198 my $ref = $pkg->can ("on_" . lc $name) 336 my $ref = $pkg->can ("on_" . lc $name)
199 or next; 337 or next;
200 338
201 $term->{_hook}[$htype]{$ref*1} = $ref; 339 $TERM->{_hook}[$htype]{$pkg} = $ref;
202 $hook_count[$htype]++ 340 $hook_count[$htype]++
203 or set_should_invoke $htype, 1; 341 or set_should_invoke $htype, 1;
204 } 342 }
205} 343}
206 344
230 } 368 }
231} 369}
232 370
233# called by the rxvt core 371# called by the rxvt core
234sub invoke { 372sub invoke {
235 local $term = shift; 373 local $TERM = shift;
236 my $htype = shift; 374 my $htype = shift;
237 375
238 if ($htype == 0) { # INIT 376 if ($htype == 0) { # INIT
239 my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl"); 377 my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
240 378
241 for my $ext (split /:/, $term->resource ("perl_ext")) { 379 for my $ext (map { split /:/, $TERM->resource ("perl_ext_$_") } 1, 2) {
242 my @files = grep -f $_, map "$_/$ext", @dirs; 380 my @files = grep -f $_, map "$_/$ext", @dirs;
243 381
244 if (@files) { 382 if (@files) {
245 register_package script_package $files[0]; 383 register_package script_package $files[0];
246 } else { 384 } else {
247 warn "perl extension '$ext' not found in perl library search path\n"; 385 warn "perl extension '$ext' not found in perl library search path\n";
248 } 386 }
249 } 387 }
250 388
251 } elsif ($htype == 1) { # DESTROY 389 } elsif ($htype == 1) { # DESTROY
252 if (my $hook = $term->{_hook}) { 390 if (my $hook = $TERM->{_hook}) {
253 for my $htype (0..$#$hook) { 391 for my $htype (0..$#$hook) {
254 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} } 392 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
255 or set_should_invoke $htype, 0; 393 or set_should_invoke $htype, 0;
256 } 394 }
257 } 395 }
258 } 396 }
259 397
260 my $cb = $term->{_hook}[$htype] 398 my $cb = $TERM->{_hook}[$htype]
261 or return; 399 or return;
262 400
263 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")" 401 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
264 if $verbosity >= 10; 402 if $verbosity >= 10;
265 403
404 keys %$cb;
405
266 while (my ($k, $v) = each %$cb) { 406 while (my ($pkg, $cb) = each %$cb) {
267 return 1 if $v->($term, @_); 407 return 1
408 if $cb->(
409 $TERM->{$pkg} ||= do {
410 my $proxy = bless { }, urxvt::term::proxy::;
411 Scalar::Util::weaken ($proxy->{term} = $TERM);
412 $proxy
413 },
414 @_,
415 );
268 } 416 }
269 417
270 0 418 0
271} 419}
272 420
273=back 421sub urxvt::term::proxy::AUTOLOAD {
422 $urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/
423 or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";
424
425 eval qq{
426 sub $urxvt::term::proxy::AUTOLOAD {
427 my \$proxy = shift;
428 \$proxy->{term}->$1 (\@_)
429 }
430 1
431 } or die "FATAL: unable to compile method forwarder: $@";
432
433 goto &$urxvt::term::proxy::AUTOLOAD;
434}
274 435
275=head2 The C<urxvt::term> Class 436=head2 The C<urxvt::term> Class
276 437
277=over 4 438=over 4
278 439
300 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont 461 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
301 borderLess color cursorBlink cursorUnderline cutchars delete_key 462 borderLess color cursorBlink cursorUnderline cutchars delete_key
302 display_name embed ext_bwidth fade font geometry hold iconName 463 display_name embed ext_bwidth fade font geometry hold iconName
303 imFont imLocale inputMethod insecure int_bwidth intensityStyles 464 imFont imLocale inputMethod insecure int_bwidth intensityStyles
304 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier 465 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
305 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext 466 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
306 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd 467 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
307 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating 468 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
308 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput 469 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
309 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle 470 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
310 shade term_name title transparent transparent_all tripleclickwords 471 shade term_name title transparent transparent_all tripleclickwords
334 495
335=item $oldtext = $term->selection ([$newtext]) 496=item $oldtext = $term->selection ([$newtext])
336 497
337Return the current selection text and optionally replace it by C<$newtext>. 498Return the current selection text and optionally replace it by C<$newtext>.
338 499
339=item $term->scr_overlay ($x, $y, $text) 500#=item $term->overlay ($x, $y, $text)
340 501#
341Create a simple multi-line overlay box. See the next method for details. 502#Create a simple multi-line overlay box. See the next method for details.
342 503#
343=cut 504#=cut
344 505
345sub urxvt::term::scr_overlay { 506sub urxvt::term::scr_overlay {
507die;
346 my ($self, $x, $y, $text) = @_; 508 my ($self, $x, $y, $text) = @_;
347 509
348 my @lines = split /\n/, $text; 510 my @lines = split /\n/, $text;
349 511
350 my $w = 0; 512 my $w = 0;
354 516
355 $self->scr_overlay_new ($x, $y, $w, scalar @lines); 517 $self->scr_overlay_new ($x, $y, $w, scalar @lines);
356 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines; 518 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
357} 519}
358 520
359=item $term->scr_overlay_new ($x, $y, $width, $height) 521=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
360 522
361Create a new (empty) overlay at the given position with the given 523Create a new (empty) overlay at the given position with the given
362width/height. A border will be put around the box. If either C<$x> or 524width/height. C<$rstyle> defines the initial rendition style
363C<$y> is negative, then this is counted from the right/bottom side, 525(default: C<OVERLAY_RSTYLE>).
364respectively.
365 526
366=item $term->scr_overlay_off 527If C<$border> is C<2> (default), then a decorative border will be put
528around the box.
367 529
368Switch the overlay off again. 530If either C<$x> or C<$y> is negative, then this is counted from the
531right/bottom side, respectively.
369 532
370=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE) 533This method returns an urxvt::overlay object. The overlay will be visible
534as long as the perl object is referenced.
371 535
372Put a single character (specified numerically) at the given overlay 536The methods currently supported on C<urxvt::overlay> objects are:
373position.
374 537
538=over 4
539
375=item $term->scr_overlay_set ($x, $y, $text) 540=item $overlay->set ($x, $y, $text, $rend)
376 541
377Write a string at the given position into the overlay. 542Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
543text in rxvt-unicode's special encoding and an array of rendition values
544at a specific position inside the overlay.
545
546=item $overlay->hide
547
548If visible, hide the overlay, but do not destroy it.
549
550=item $overlay->show
551
552If hidden, display the overlay again.
553
554=back
378 555
379=item $cellwidth = $term->strwidth $string 556=item $cellwidth = $term->strwidth $string
380 557
381Returns the number of screen-cells this string would need. Correctly 558Returns the number of screen-cells this string would need. Correctly
382accounts for wide and combining characters. 559accounts for wide and combining characters.
393 570
394Write the octets given in C<$data> to the tty (i.e. as program input). To 571Write the octets given in C<$data> to the tty (i.e. as program input). To
395pass characters instead of octets, you should convert your strings first 572pass characters instead of octets, you should convert your strings first
396to the locale-specific encoding using C<< $term->locale_encode >>. 573to the locale-specific encoding using C<< $term->locale_encode >>.
397 574
575=item $nrow = $term->nrow
576
577=item $ncol = $term->ncol
578
579Return the number of rows/columns of the terminal window (i.e. as
580specified by C<-geometry>, excluding any scrollback).
581
398=item $nsaved = $term->nsaved 582=item $nsaved = $term->nsaved
399 583
400Returns the number of lines in the scrollback buffer. 584Returns the number of lines in the scrollback buffer.
401 585
402=item $view_start = $term->view_start ([$newvalue]) 586=item $view_start = $term->view_start ([$newvalue])
403 587
404Returns the negative row number of the topmost line. Minimum value is 588Returns the negative row number of the topmost line. Minimum value is
405C<0>, which displays the normal terminal contents. Larger values scroll 589C<0>, which displays the normal terminal contents. Larger values scroll
406this many lines into the scrollback buffer. 590this many lines into the scrollback buffer.
407 591
592=item $term->want_refresh
593
594Requests a screen refresh. At the next opportunity, rxvt-unicode will
595compare the on-screen display with its stored representation. If they
596differ, it redraws the differences.
597
598Used after changing terminal contents to display them.
599
408=item $text = $term->ROW_t ($row_number[, $new_text]) 600=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
409 601
410Returns the text of the entire row with number C<$row_number>. Row C<0> 602Returns the text of the entire row with number C<$row_number>. Row C<0>
411is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost 603is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
412terminal line. The scrollback buffer starts at line C<-1> and extends to 604terminal line. The scrollback buffer starts at line C<-1> and extends to
413line C<< -$term->nsaved >>. 605line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
606is requested.
414 607
415If C<$new_text> is specified, it will completely replace the current line. 608If C<$new_text> is specified, it will replace characters in the current
609line, starting at column C<$start_col> (default C<0>), which is useful
610to replace only parts of a line. The font index in the rendition will
611automatically be updated.
416 612
417C<$text> is in a special encoding: tabs and wide characters that use more 613C<$text> is in a special encoding: tabs and wide characters that use more
418than one cell when displayed are padded with urxvt::NOCHAR characters 614than one cell when displayed are padded with urxvt::NOCHAR characters
419(C<chr 65535>). Characters with combining characters and other characters 615(C<chr 65535>). Characters with combining characters and other characters
420that do not fit into the normal tetx encoding will be replaced with 616that do not fit into the normal tetx encoding will be replaced with
425characters. 621characters.
426 622
427The methods C<< $term->special_encode >> and C<< $term->special_decode >> 623The methods C<< $term->special_encode >> and C<< $term->special_decode >>
428can be used to convert normal strings into this encoding and vice versa. 624can be used to convert normal strings into this encoding and vice versa.
429 625
430=item $rend = $term->ROW_r ($row_number[, $new_rend]) 626=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
431 627
432Like C<< $term->ROW_t >> 628Like C<< $term->ROW_t >>, but returns an arrayref with rendition
629bitsets. Rendition bitsets contain information about colour, font, font
630styles and similar information. See also C<< $term->ROW_t >>.
433 631
632When setting rendition, the font mask will be ignored.
633
634See the section on RENDITION, above.
635
636=item $length = $term->ROW_l ($row_number[, $new_length])
637
638Returns the number of screen cells that are in use ("the line
639length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
640line is joined with the following one.
641
642=item $bool = $term->is_longer ($row_number)
643
644Returns true if the row is part of a multiple-row logical "line" (i.e.
645joined with the following row), which means all characters are in use
646and it is continued on the next row (and possibly a continuation of the
647previous row(s)).
648
649=item $line = $term->line ($row_number)
650
651Create and return a new C<urxvt::line> object that stores information
652about the logical line that row C<$row_number> is part of. It supports the
653following methods:
654
655=over 4
656
657=item $text = $line->t
658
659Returns the full text of the line, similar to C<ROW_t>
660
661=item $rend = $line->r
662
663Returns the full rendition array of the line, similar to C<ROW_r>
664
665=item $length = $line->l
666
667Returns the length of the line in cells, similar to C<ROW_l>.
668
669=item $rownum = $line->beg
670
671=item $rownum = $line->end
672
673Return the row number of the first/last row of the line, respectively.
674
675=item $offset = $line->offset_of ($row, $col)
676
677Returns the character offset of the given row|col pair within the logical
678line.
679
680=item ($row, $col) = $line->coord_of ($offset)
681
682Translates a string offset into terminal coordinates again.
683
684=back
685
686=cut
687
688sub urxvt::term::line {
689 my ($self, $row) = @_;
690
691 my $maxrow = $self->nrow - 1;
692
693 my ($beg, $end) = ($row, $row);
694
695 --$beg while $self->ROW_is_longer ($beg - 1);
696 ++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
697
698 bless {
699 term => $self,
700 beg => $beg,
701 end => $end,
702 len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
703 }, urxvt::line::
704}
705
706sub urxvt::line::t {
707 my ($self) = @_;
708
709 substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
710 0, $self->{len}
711}
712
713sub urxvt::line::r {
714 my ($self) = @_;
715
716 my $rend = [
717 map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
718 ];
719 $#$rend = $self->{len} - 1;
720 $rend
721}
722
723sub urxvt::line::beg { $_[0]{beg} }
724sub urxvt::line::end { $_[0]{end} }
725sub urxvt::line::l { $_[0]{len} }
726
727sub urxvt::line::offset_of {
728 my ($self, $row, $col) = @_;
729
730 ($row - $self->{beg}) * $self->{term}->ncol + $col
731}
732
733sub urxvt::line::coord_of {
734 my ($self, $offset) = @_;
735
736 use integer;
737
738 (
739 $offset / $self->{term}->ncol + $self->{beg},
740 $offset % $self->{term}->ncol
741 )
742}
743
744=item ($row, $col) = $line->coord_of ($offset)
434=item $text = $term->special_encode $string 745=item $text = $term->special_encode $string
435 746
436Converts a perl string into the special encoding used by rxvt-unicode, 747Converts a perl string into the special encoding used by rxvt-unicode,
437where one character corresponds to one screen cell. See 748where one character corresponds to one screen cell. See
438C<< $term->ROW_t >> for details. 749C<< $term->ROW_t >> for details.
447=head2 The C<urxvt::timer> Class 758=head2 The C<urxvt::timer> Class
448 759
449This class implements timer watchers/events. Time is represented as a 760This class implements timer watchers/events. Time is represented as a
450fractional number of seconds since the epoch. Example: 761fractional number of seconds since the epoch. Example:
451 762
452 # create a digital clock display in upper right corner 763 $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
453 $term->{timer} = urxvt::timer 764 $term->{timer} = urxvt::timer
454 ->new 765 ->new
455 ->start (urxvt::NOW) 766 ->interval (1)
456 ->cb (sub { 767 ->cb (sub {
457 my ($timer) = @_;
458 my $time = $timer->at;
459 $timer->start ($time + 1);
460 $self->scr_overlay (-1, 0, 768 $term->{overlay}->set (0, 0,
461 POSIX::strftime "%H:%M:%S", localtime $time); 769 sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
462 }); 770 });
463 771
464=over 4 772=over 4
465 773
466=item $timer = new urxvt::timer 774=item $timer = new urxvt::timer
467 775
468Create a new timer object in stopped state. 776Create a new timer object in started state. It is scheduled to fire
777immediately.
469 778
470=item $timer = $timer->cb (sub { my ($timer) = @_; ... }) 779=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
471 780
472Set the callback to be called when the timer triggers. 781Set the callback to be called when the timer triggers.
473 782
476Return the time this watcher will fire next. 785Return the time this watcher will fire next.
477 786
478=item $timer = $timer->set ($tstamp) 787=item $timer = $timer->set ($tstamp)
479 788
480Set the time the event is generated to $tstamp. 789Set the time the event is generated to $tstamp.
790
791=item $timer = $timer->interval ($interval)
792
793Normally (and when C<$interval> is C<0>), the timer will automatically
794stop after it has fired once. If C<$interval> is non-zero, then the timer
795is automatically rescheduled at the given intervals.
481 796
482=item $timer = $timer->start 797=item $timer = $timer->start
483 798
484Start the timer. 799Start the timer.
485 800
548This variable controls the verbosity level of the perl extension. Higher 863This variable controls the verbosity level of the perl extension. Higher
549numbers indicate more verbose output. 864numbers indicate more verbose output.
550 865
551=over 4 866=over 4
552 867
553=item 0 - only fatal messages 868=item =0 - only fatal messages
554 869
555=item 3 - script loading and management 870=item =3 - script loading and management
556 871
557=item 10 - all events received 872=item =10 - all events received
558 873
559=back 874=back
560 875
561=head1 AUTHOR 876=head1 AUTHOR
562 877

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