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Revision 1.9 by root, Mon Jan 2 20:40:20 2006 UTC vs.
Revision 1.32 by root, Wed Jan 4 21:37:55 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/>, they will be loaded automatically. 9 # create a file grab_test in $HOME:
8
9* Scripts are evaluated in a 'use strict' and 'use utf8' environment, and
10thus must be encoded as UTF-8.
11 10
12 sub on_sel_grab { 11 sub on_sel_grab {
13 warn "you selected ", $_[0]->selection; 12 warn "you selected ", $_[0]->selection;
14 () 13 ()
15 } 14 }
16 15
17 1 16 # start a @@RXVT_NAME@@ using it:
17
18 @@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
18 19
19=head1 DESCRIPTION 20=head1 DESCRIPTION
20 21
21Everytime a terminal object gets created, scripts specified via the 22Everytime a terminal object gets created, scripts specified via the
22C<perl> resource are associated with it. 23C<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.
23 27
24Each 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
25scripts 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
26 72
27=head2 General API Considerations 73=head2 General API Considerations
28 74
29All objects (such as terminals, time watchers etc.) are typical 75All objects (such as terminals, time watchers etc.) are typical
30reference-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
31like. All members starting with an underscore (such as C<_ptr> or 77like. All members starting with an underscore (such as C<_ptr> or
32C<_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
33modified). 79modified).
34 80
35When 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
36emptied, 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
37the 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
38terminal is destroyed. 84terminal is destroyed.
39 85
40=head2 Hooks 86=head2 Hooks
41 87
42The following subroutines can be declared in loaded scripts, and will be called 88The following subroutines can be declared in loaded scripts, and will be
43whenever 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.
44 96
45All 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
46counts 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,
47and 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.
48 100
81requested from the server. The selection text can be queried and changed 133requested from the server. The selection text can be queried and changed
82by calling C<< $term->selection >>. 134by calling C<< $term->selection >>.
83 135
84Returning a true value aborts selection grabbing. It will still be hilighted. 136Returning a true value aborts selection grabbing. It will still be hilighted.
85 137
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
86=item on_focus_in $term 147=item on_focus_in $term
87 148
88Called whenever the window gets the keyboard focus, before urxvt does 149Called whenever the window gets the keyboard focus, before urxvt does
89focus in processing. 150focus in processing.
90 151
110number of lines that will be in the scrollback buffer. 171number of lines that will be in the scrollback buffer.
111 172
112=item on_tty_activity $term *NYI* 173=item on_tty_activity $term *NYI*
113 174
114Called 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.).
115 189
116=item on_refresh_begin $term 190=item on_refresh_begin $term
117 191
118Called just before the screen gets redrawn. Can be used for overlay 192Called just before the screen gets redrawn. Can be used for overlay
119or similar effects by modify terminal contents in refresh_begin, and 193or similar effects by modify terminal contents in refresh_begin, and
122 196
123=item on_refresh_end $term 197=item on_refresh_end $term
124 198
125Called just after the screen gets redrawn. See C<on_refresh_begin>. 199Called just after the screen gets redrawn. See C<on_refresh_begin>.
126 200
201=item on_keyboard_command $term, $string
202
203Called whenever the user presses a key combination that has a
204C<perl:string> action bound to it (see description of the B<keysym>
205resource in the @@RXVT_NAME@@(1) manpage).
206
207=back
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
127=back 218=back
128 219
129=head2 Functions in the C<urxvt> Package 220=head2 Functions in the C<urxvt> Package
130 221
131=over 4 222=over 4
147 238
148=item $time = urxvt::NOW 239=item $time = urxvt::NOW
149 240
150Returns the "current time" (as per the event loop). 241Returns the "current time" (as per the event loop).
151 242
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
152=cut 297=cut
153 298
154package urxvt; 299package urxvt;
155 300
156use strict; 301use strict;
302use Scalar::Util ();
157 303
158our $term; 304our $TERM;
159our @HOOKNAME; 305our @HOOKNAME;
160our $LIBDIR; 306our $LIBDIR;
161 307
162BEGIN { 308BEGIN {
163 urxvt->bootstrap; 309 urxvt->bootstrap;
188 my $name = $HOOKNAME[$htype]; 334 my $name = $HOOKNAME[$htype];
189 335
190 my $ref = $pkg->can ("on_" . lc $name) 336 my $ref = $pkg->can ("on_" . lc $name)
191 or next; 337 or next;
192 338
193 $term->{_hook}[$htype]{$ref*1} = $ref; 339 $TERM->{_hook}[$htype]{$pkg} = $ref;
194 $hook_count[$htype]++ 340 $hook_count[$htype]++
195 or set_should_invoke $htype, 1; 341 or set_should_invoke $htype, 1;
196 } 342 }
197} 343}
198 344
220 366
221 $pkg 367 $pkg
222 } 368 }
223} 369}
224 370
371our $retval; # return value for urxvt
372
225# called by the rxvt core 373# called by the rxvt core
226sub invoke { 374sub invoke {
227 local $term = shift; 375 local $TERM = shift;
228 my $htype = shift; 376 my $htype = shift;
229 377
230 if ($htype == 0) { # INIT 378 if ($htype == 0) { # INIT
231 my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl"); 379 my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
232 380
233 for my $ext (split /:/, $term->resource ("perl_ext")) { 381 for my $ext (map { split /:/, $TERM->resource ("perl_ext_$_") } 1, 2) {
234 my @files = grep -f $_, map "$_/$ext", @dirs; 382 my @files = grep -f $_, map "$_/$ext", @dirs;
235 383
236 if (@files) { 384 if (@files) {
237 register_package script_package $files[0]; 385 register_package script_package $files[0];
238 } else { 386 } else {
239 warn "perl extension '$ext' not found in perl library search path\n"; 387 warn "perl extension '$ext' not found in perl library search path\n";
240 } 388 }
241 } 389 }
390 }
242 391
392 $retval = undef;
393
394 if (my $cb = $TERM->{_hook}[$htype]) {
395 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
396 if $verbosity >= 10;
397
398 keys %$cb;
399
400 while (my ($pkg, $cb) = each %$cb) {
401 $retval = $cb->(
402 $TERM->{_pkg}{$pkg} ||= do {
403 my $proxy = bless { }, urxvt::term::proxy::;
404 Scalar::Util::weaken ($proxy->{term} = $TERM);
405 $proxy
406 },
407 @_,
408 ) and last;
409 }
410 }
411
243 } elsif ($htype == 1) { # DESTROY 412 if ($htype == 1) { # DESTROY
413 # remove hooks if unused
244 if (my $hook = $term->{_hook}) { 414 if (my $hook = $TERM->{_hook}) {
245 for my $htype (0..$#$hook) { 415 for my $htype (0..$#$hook) {
246 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} } 416 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
247 or set_should_invoke $htype, 0; 417 or set_should_invoke $htype, 0;
248 } 418 }
249 } 419 }
420
421 # clear package objects
422 %$_ = () for values %{ $TERM->{_pkg} };
423
424 # clear package
425 %$TERM = ();
250 } 426 }
251 427
252 my $cb = $term->{_hook}[$htype] 428 $retval
253 or return;
254
255 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"
256 if $verbosity >= 10;
257
258 while (my ($k, $v) = each %$cb) {
259 return 1 if $v->($term, @_);
260 }
261
262 0
263} 429}
264 430
265=back 431sub urxvt::term::proxy::AUTOLOAD {
432 $urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/
433 or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";
434
435 eval qq{
436 sub $urxvt::term::proxy::AUTOLOAD {
437 my \$proxy = shift;
438 \$proxy->{term}->$1 (\@_)
439 }
440 1
441 } or die "FATAL: unable to compile method forwarder: $@";
442
443 goto &$urxvt::term::proxy::AUTOLOAD;
444}
266 445
267=head2 The C<urxvt::term> Class 446=head2 The C<urxvt::term> Class
268 447
269=over 4 448=over 4
270 449
292 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont 471 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
293 borderLess color cursorBlink cursorUnderline cutchars delete_key 472 borderLess color cursorBlink cursorUnderline cutchars delete_key
294 display_name embed ext_bwidth fade font geometry hold iconName 473 display_name embed ext_bwidth fade font geometry hold iconName
295 imFont imLocale inputMethod insecure int_bwidth intensityStyles 474 imFont imLocale inputMethod insecure int_bwidth intensityStyles
296 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier 475 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
297 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext 476 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
298 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd 477 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
299 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating 478 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
300 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput 479 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
301 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle 480 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
302 shade term_name title transparent transparent_all tripleclickwords 481 shade term_name title transparent transparent_all tripleclickwords
308 my ($self, $name) = (shift, shift); 487 my ($self, $name) = (shift, shift);
309 unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0); 488 unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
310 goto &urxvt::term::_resource; 489 goto &urxvt::term::_resource;
311} 490}
312 491
492=item $rend = $term->screen_rstyle ([$new_rstyle])
493
494Return and optionally change the current rendition. Text thta is output by
495the temrianl application will use this style.
496
497=item ($row, $col) = $term->screen_cur ([$row, $col])
498
499Return the current coordinates of the text cursor position and optionally
500set it (which is usually bad as applications don't expect that).
501
313=item ($row, $col) = $term->selection_mark ([$row, $col]) 502=item ($row, $col) = $term->selection_mark ([$row, $col])
314 503
315=item ($row, $col) = $term->selection_beg ([$row, $col]) 504=item ($row, $col) = $term->selection_beg ([$row, $col])
316 505
317=item ($row, $col) = $term->selection_end ([$row, $col]) 506=item ($row, $col) = $term->selection_end ([$row, $col])
326 515
327=item $oldtext = $term->selection ([$newtext]) 516=item $oldtext = $term->selection ([$newtext])
328 517
329Return the current selection text and optionally replace it by C<$newtext>. 518Return the current selection text and optionally replace it by C<$newtext>.
330 519
331=item $term->scr_overlay ($x, $y, $text) 520#=item $term->overlay ($x, $y, $text)
332 521#
333Create a simple multi-line overlay box. See the next method for details. 522#Create a simple multi-line overlay box. See the next method for details.
334 523#
335=cut 524#=cut
336 525
337sub urxvt::term::scr_overlay { 526sub urxvt::term::scr_overlay {
527die;
338 my ($self, $x, $y, $text) = @_; 528 my ($self, $x, $y, $text) = @_;
339 529
340 my @lines = split /\n/, $text; 530 my @lines = split /\n/, $text;
341 531
342 my $w = 0; 532 my $w = 0;
346 536
347 $self->scr_overlay_new ($x, $y, $w, scalar @lines); 537 $self->scr_overlay_new ($x, $y, $w, scalar @lines);
348 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines; 538 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
349} 539}
350 540
351=item $term->scr_overlay_new ($x, $y, $width, $height) 541=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
352 542
353Create a new (empty) overlay at the given position with the given 543Create a new (empty) overlay at the given position with the given
354width/height. A border will be put around the box. If either C<$x> or 544width/height. C<$rstyle> defines the initial rendition style
355C<$y> is negative, then this is counted from the right/bottom side, 545(default: C<OVERLAY_RSTYLE>).
356respectively.
357 546
358=item $term->scr_overlay_off 547If C<$border> is C<2> (default), then a decorative border will be put
548around the box.
359 549
360Switch the overlay off again. 550If either C<$x> or C<$y> is negative, then this is counted from the
551right/bottom side, respectively.
361 552
362=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE) 553This method returns an urxvt::overlay object. The overlay will be visible
554as long as the perl object is referenced.
363 555
364Put a single character (specified numerically) at the given overlay 556The methods currently supported on C<urxvt::overlay> objects are:
365position.
366 557
558=over 4
559
367=item $term->scr_overlay_set ($x, $y, $text) 560=item $overlay->set ($x, $y, $text, $rend)
368 561
369Write a string at the given position into the overlay. 562Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
563text in rxvt-unicode's special encoding and an array of rendition values
564at a specific position inside the overlay.
565
566=item $overlay->hide
567
568If visible, hide the overlay, but do not destroy it.
569
570=item $overlay->show
571
572If hidden, display the overlay again.
573
574=back
370 575
371=item $cellwidth = $term->strwidth $string 576=item $cellwidth = $term->strwidth $string
372 577
373Returns the number of screen-cells this string would need. Correctly 578Returns the number of screen-cells this string would need. Correctly
374accounts for wide and combining characters. 579accounts for wide and combining characters.
382Convert the given locale-encoded octets into a perl string. 587Convert the given locale-encoded octets into a perl string.
383 588
384=item $term->tt_write ($octets) 589=item $term->tt_write ($octets)
385 590
386Write the octets given in C<$data> to the tty (i.e. as program input). To 591Write the octets given in C<$data> to the tty (i.e. as program input). To
387pass characters instead of octets, you should convetr you strings first to 592pass characters instead of octets, you should convert your strings first
388the locale-specific encoding using C<< $term->locale_encode >>. 593to the locale-specific encoding using C<< $term->locale_encode >>.
594
595=item $window_width = $term->width
596
597=item $window_height = $term->height
598
599=item $font_width = $term->fwidth
600
601=item $font_height = $term->fheight
602
603=item $font_ascent = $term->fbase
604
605=item $terminal_rows = $term->nrow
606
607=item $terminal_columns = $term->ncol
608
609=item $has_focus = $term->focus
610
611=item $is_mapped = $term->mapped
612
613=item $max_scrollback = $term->saveLines
614
615=item $nrow_plus_saveLines = $term->total_rows
616
617=item $lines_in_scrollback = $term->nsaved
618
619Return various integers describing terminal characteristics.
620
621=item $view_start = $term->view_start ([$newvalue])
622
623Returns the negative row number of the topmost line. Minimum value is
624C<0>, which displays the normal terminal contents. Larger values scroll
625this many lines into the scrollback buffer.
626
627=item $term->want_refresh
628
629Requests a screen refresh. At the next opportunity, rxvt-unicode will
630compare the on-screen display with its stored representation. If they
631differ, it redraws the differences.
632
633Used after changing terminal contents to display them.
634
635=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
636
637Returns the text of the entire row with number C<$row_number>. Row C<0>
638is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
639terminal line. The scrollback buffer starts at line C<-1> and extends to
640line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
641is requested.
642
643If C<$new_text> is specified, it will replace characters in the current
644line, starting at column C<$start_col> (default C<0>), which is useful
645to replace only parts of a line. The font index in the rendition will
646automatically be updated.
647
648C<$text> is in a special encoding: tabs and wide characters that use more
649than one cell when displayed are padded with urxvt::NOCHAR characters
650(C<chr 65535>). Characters with combining characters and other characters
651that do not fit into the normal tetx encoding will be replaced with
652characters in the private use area.
653
654You have to obey this encoding when changing text. The advantage is
655that C<substr> and similar functions work on screen cells and not on
656characters.
657
658The methods C<< $term->special_encode >> and C<< $term->special_decode >>
659can be used to convert normal strings into this encoding and vice versa.
660
661=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
662
663Like C<< $term->ROW_t >>, but returns an arrayref with rendition
664bitsets. Rendition bitsets contain information about colour, font, font
665styles and similar information. See also C<< $term->ROW_t >>.
666
667When setting rendition, the font mask will be ignored.
668
669See the section on RENDITION, above.
670
671=item $length = $term->ROW_l ($row_number[, $new_length])
672
673Returns the number of screen cells that are in use ("the line
674length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
675line is joined with the following one.
676
677=item $bool = $term->is_longer ($row_number)
678
679Returns true if the row is part of a multiple-row logical "line" (i.e.
680joined with the following row), which means all characters are in use
681and it is continued on the next row (and possibly a continuation of the
682previous row(s)).
683
684=item $line = $term->line ($row_number)
685
686Create and return a new C<urxvt::line> object that stores information
687about the logical line that row C<$row_number> is part of. It supports the
688following methods:
689
690=over 4
691
692=item $text = $line->t
693
694Returns the full text of the line, similar to C<ROW_t>
695
696=item $rend = $line->r
697
698Returns the full rendition array of the line, similar to C<ROW_r>
699
700=item $length = $line->l
701
702Returns the length of the line in cells, similar to C<ROW_l>.
703
704=item $rownum = $line->beg
705
706=item $rownum = $line->end
707
708Return the row number of the first/last row of the line, respectively.
709
710=item $offset = $line->offset_of ($row, $col)
711
712Returns the character offset of the given row|col pair within the logical
713line.
714
715=item ($row, $col) = $line->coord_of ($offset)
716
717Translates a string offset into terminal coordinates again.
718
719=back
720
721=cut
722
723sub urxvt::term::line {
724 my ($self, $row) = @_;
725
726 my $maxrow = $self->nrow - 1;
727
728 my ($beg, $end) = ($row, $row);
729
730 --$beg while $self->ROW_is_longer ($beg - 1);
731 ++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
732
733 bless {
734 term => $self,
735 beg => $beg,
736 end => $end,
737 len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
738 }, urxvt::line::
739}
740
741sub urxvt::line::t {
742 my ($self) = @_;
743
744 substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
745 0, $self->{len}
746}
747
748sub urxvt::line::r {
749 my ($self) = @_;
750
751 my $rend = [
752 map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
753 ];
754 $#$rend = $self->{len} - 1;
755 $rend
756}
757
758sub urxvt::line::beg { $_[0]{beg} }
759sub urxvt::line::end { $_[0]{end} }
760sub urxvt::line::l { $_[0]{len} }
761
762sub urxvt::line::offset_of {
763 my ($self, $row, $col) = @_;
764
765 ($row - $self->{beg}) * $self->{term}->ncol + $col
766}
767
768sub urxvt::line::coord_of {
769 my ($self, $offset) = @_;
770
771 use integer;
772
773 (
774 $offset / $self->{term}->ncol + $self->{beg},
775 $offset % $self->{term}->ncol
776 )
777}
778
779=item ($row, $col) = $line->coord_of ($offset)
780=item $text = $term->special_encode $string
781
782Converts a perl string into the special encoding used by rxvt-unicode,
783where one character corresponds to one screen cell. See
784C<< $term->ROW_t >> for details.
785
786=item $string = $term->special_decode $text
787
788Converts rxvt-unicodes text reprsentation into a perl string. See
789C<< $term->ROW_t >> for details.
389 790
390=back 791=back
391 792
392=head2 The C<urxvt::timer> Class 793=head2 The C<urxvt::timer> Class
393 794
394This class implements timer watchers/events. Time is represented as a 795This class implements timer watchers/events. Time is represented as a
395fractional number of seconds since the epoch. Example: 796fractional number of seconds since the epoch. Example:
396 797
397 # create a digital clock display in upper right corner 798 $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
398 $term->{timer} = urxvt::timer 799 $term->{timer} = urxvt::timer
399 ->new 800 ->new
400 ->start (urxvt::NOW) 801 ->interval (1)
401 ->cb (sub { 802 ->cb (sub {
402 my ($timer) = @_;
403 my $time = $timer->at;
404 $timer->start ($time + 1);
405 $self->scr_overlay (-1, 0, 803 $term->{overlay}->set (0, 0,
406 POSIX::strftime "%H:%M:%S", localtime $time); 804 sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
407 }); 805 });
408 806
409=over 4 807=over 4
410 808
411=item $timer = new urxvt::timer 809=item $timer = new urxvt::timer
412 810
413Create a new timer object in stopped state. 811Create a new timer object in started state. It is scheduled to fire
812immediately.
414 813
415=item $timer = $timer->cb (sub { my ($timer) = @_; ... }) 814=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
416 815
417Set the callback to be called when the timer triggers. 816Set the callback to be called when the timer triggers.
418 817
421Return the time this watcher will fire next. 820Return the time this watcher will fire next.
422 821
423=item $timer = $timer->set ($tstamp) 822=item $timer = $timer->set ($tstamp)
424 823
425Set the time the event is generated to $tstamp. 824Set the time the event is generated to $tstamp.
825
826=item $timer = $timer->interval ($interval)
827
828Normally (and when C<$interval> is C<0>), the timer will automatically
829stop after it has fired once. If C<$interval> is non-zero, then the timer
830is automatically rescheduled at the given intervals.
426 831
427=item $timer = $timer->start 832=item $timer = $timer->start
428 833
429Start the timer. 834Start the timer.
430 835
493This variable controls the verbosity level of the perl extension. Higher 898This variable controls the verbosity level of the perl extension. Higher
494numbers indicate more verbose output. 899numbers indicate more verbose output.
495 900
496=over 4 901=over 4
497 902
498=item 0 - only fatal messages 903=item =0 - only fatal messages
499 904
500=item 3 - script loading and management 905=item =3 - script loading and management
501 906
502=item 10 - all events received 907=item =10 - all events received
503 908
504=back 909=back
505 910
506=head1 AUTHOR 911=head1 AUTHOR
507 912

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