ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/rxvt-unicode/src/urxvt.pm
(Generate patch)

Comparing rxvt-unicode/src/urxvt.pm (file contents):
Revision 1.19 by root, Tue Jan 3 02:42:17 2006 UTC vs.
Revision 1.38 by root, Fri Jan 6 03:43:12 2006 UTC

39 39
40=over 4 40=over 4
41 41
42=item selection 42=item selection
43 43
44Miscellaneous selection modifications. 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:
45 50
46=over 4 51=over 4
47 52
48=item rot13 53=item rot13
49 54
52 URxvt.keysym.C-M-r: perl:selection:rot13 57 URxvt.keysym.C-M-r: perl:selection:rot13
53 58
54=back 59=back
55 60
56=item digital-clock 61=item digital-clock
62
63Displays a digital clock using the built-in overlay.
64
65=item mark-urls
66
67Uses per-line filtering (C<on_line_update>) to underline urls.
68
69=item example-refresh-hooks
57 70
58Displays a very simple digital clock in the upper right corner of the 71Displays a very simple digital clock in the upper right corner of the
59window. Illustrates overwriting the refresh callbacks to create your own 72window. Illustrates overwriting the refresh callbacks to create your own
60overlays or changes. 73overlays or changes.
61 74
62=item simple-overlay-clock 75=item example-filter-input
63 76
64Displays a digital clock using the built-in overlay (colourful, useless). 77A not very useful example of filtering all text output to the terminal, by
78underlining all urls that matches a certain regex (i.e. some urls :). It
79is not very useful because urls that are output in multiple steps (e.g.
80when typing them) do not get marked.
65 81
66=back 82=back
67 83
68=head2 General API Considerations 84=head2 General API Considerations
69 85
70All objects (such as terminals, time watchers etc.) are typical 86All objects (such as terminals, time watchers etc.) are typical
71reference-to-hash objects. The hash can be used to store anything you 87reference-to-hash objects. The hash can be used to store anything you
72like. All members starting with an underscore (such as C<_ptr> or 88like. All members starting with an underscore (such as C<_ptr> or
73C<_hook>) are reserved for internal uses and must not be accessed or 89C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
74modified). 90modified).
75 91
76When objects are destroyed on the C++ side, the perl object hashes are 92When objects are destroyed on the C++ side, the perl object hashes are
77emptied, so its best to store related objects such as time watchers and 93emptied, so its best to store related objects such as time watchers and
78the like inside the terminal object so they get destroyed as soon as the 94the like inside the terminal object so they get destroyed as soon as the
79terminal is destroyed. 95terminal is destroyed.
80 96
97Argument names also often indicate the type of a parameter. Here are some
98hints on what they mean:
99
100=over 4
101
102=item $text
103
104Rxvt-unicodes special way of encoding text, where one "unicode" character
105always represents one screen cell. See L<row_t> for a discussion of this format.
106
107=item $string
108
109A perl text string, with an emphasis on I<text>. It can store all unicode
110characters and is to be distinguished with text encoded in a specific
111encoding (often locale-specific) and binary data.
112
113=item $octets
114
115Either binary data or - more common - a text string encoded in a
116locale-specific way.
117
118=back
119
81=head2 Hooks 120=head2 Hooks
82 121
83The following subroutines can be declared in loaded scripts, and will be called 122The following subroutines can be declared in loaded scripts, and will be
84whenever the relevant event happens. 123called whenever the relevant event happens.
124
125The first argument passed to them is an object private to each terminal
126and extension package. You can call all C<urxvt::term> methods on it, but
127its not a real C<urxvt::term> object. Instead, the real C<urxvt::term>
128object that is shared between all packages is stored in the C<term>
129member.
85 130
86All of them must return a boolean value. If it is true, then the event 131All of them must return a boolean value. If it is true, then the event
87counts as being I<consumed>, and the invocation of other hooks is skipped, 132counts as being I<consumed>, and the invocation of other hooks is skipped,
88and the relevant action might not be carried out by the C++ code. 133and the relevant action might not be carried out by the C++ code.
89 134
92=over 4 137=over 4
93 138
94=item on_init $term 139=item on_init $term
95 140
96Called after a new terminal object has been initialized, but before 141Called after a new terminal object has been initialized, but before
97windows are created or the command gets run. 142windows are created or the command gets run. Most methods are unsafe to
143call or deliver senseless data, as terminal size and other characteristics
144have not yet been determined. You can safely query and change resources,
145though.
98 146
99=item on_reset $term 147=item on_reset $term
100 148
101Called after the screen is "reset" for any reason, such as resizing or 149Called after the screen is "reset" for any reason, such as resizing or
102control sequences. Here is where you can react on changes to size-related 150control sequences. Here is where you can react on changes to size-related
122requested from the server. The selection text can be queried and changed 170requested from the server. The selection text can be queried and changed
123by calling C<< $term->selection >>. 171by calling C<< $term->selection >>.
124 172
125Returning a true value aborts selection grabbing. It will still be hilighted. 173Returning a true value aborts selection grabbing. It will still be hilighted.
126 174
175=item on_sel_extend $term
176
177Called whenever the user tries to extend the selection (e.g. with a double
178click) and is either supposed to return false (normal operation), or
179should extend the selection itelf and return true to suppress the built-in
180processing.
181
182See the F<selection> example extension.
183
127=item on_focus_in $term 184=item on_focus_in $term
128 185
129Called whenever the window gets the keyboard focus, before urxvt does 186Called whenever the window gets the keyboard focus, before urxvt does
130focus in processing. 187focus in processing.
131 188
151number of lines that will be in the scrollback buffer. 208number of lines that will be in the scrollback buffer.
152 209
153=item on_tty_activity $term *NYI* 210=item on_tty_activity $term *NYI*
154 211
155Called whenever the program(s) running in the urxvt window send output. 212Called whenever the program(s) running in the urxvt window send output.
213
214=item on_osc_seq $term, $string
215
216Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
217operating system command) is processed. Cursor position and other state
218information is up-to-date when this happens. For interoperability, the
219string should start with the extension name and a colon, to distinguish
220it from commands for other extensions, and this might be enforced in the
221future.
222
223Be careful not ever to trust (in a security sense) the data you receive,
224as its source can not easily be controleld (e-mail content, messages from
225other users on the same system etc.).
226
227=item on_add_lines $term, $string
228
229Called whenever text is about to be output, with the text as argument. You
230can filter/change and output the text yourself by returning a true value
231and calling C<< $term->scr_add_lines >> yourself. Please note that this
232might be very slow, however, as your hook is called for B<all> text being
233output.
234
235=item on_line_update $term, $row
236
237Called whenever a line was updated or changed. Can be used to filter
238screen output (e.g. underline urls or other useless stuff). Only lines
239that are being shown will be filtered, and, due to performance reasons,
240not always immediately.
241
242The row number is always the topmost row of the line if the line spans
243multiple rows.
244
245Please note that, if you change the line, then the hook might get called
246later with the already-modified line (e.g. if unrelated parts change), so
247you cannot just toggle rendition bits, but only set them.
156 248
157=item on_refresh_begin $term 249=item on_refresh_begin $term
158 250
159Called just before the screen gets redrawn. Can be used for overlay 251Called just before the screen gets redrawn. Can be used for overlay
160or similar effects by modify terminal contents in refresh_begin, and 252or similar effects by modify terminal contents in refresh_begin, and
169 261
170Called whenever the user presses a key combination that has a 262Called whenever the user presses a key combination that has a
171C<perl:string> action bound to it (see description of the B<keysym> 263C<perl:string> action bound to it (see description of the B<keysym>
172resource in the @@RXVT_NAME@@(1) manpage). 264resource in the @@RXVT_NAME@@(1) manpage).
173 265
266=item on_key_press $term, $event, $octets
267
268=item on_key_release $term, $event
269
270=item on_button_press $term, $event
271
272=item on_button_release $term, $event
273
274=item on_motion_notify $term, $event
275
276Called whenever the corresponding X event is received for the terminal
277(see the XEvent manpage) If the hook returns true, then the even will be
278ignored by rxvt-unicode.
279
280C<on_key_press> additionally receives the string rxvt-unicode would
281output, if any, in locale-specific encoding.
282
283subwindow.
284
285=back
286
287=head2 Variables in the C<urxvt> Package
288
289=over 4
290
291=item $urxvt::TERM
292
293The current terminal. Whenever a callback/Hook is bein executed, this
294variable stores the current C<urxvt::term> object.
295
174=back 296=back
175 297
176=head2 Functions in the C<urxvt> Package 298=head2 Functions in the C<urxvt> Package
177 299
178=over 4 300=over 4
301
302=item $term = new urxvt [arg...]
303
304Creates a new terminal, very similar as if you had started it with
305C<system $binfile, arg...>. Croaks (and probably outputs an error message)
306if the new instance couldn't be created. Returns C<undef> if the new
307instance didn't initialise perl, and the terminal object otherwise. The
308C<init> and C<start> hooks will be called during the call.
179 309
180=item urxvt::fatal $errormessage 310=item urxvt::fatal $errormessage
181 311
182Fatally aborts execution with the given error message. Avoid at all 312Fatally aborts execution with the given error message. Avoid at all
183costs! The only time this is acceptable is when the terminal process 313costs! The only time this is acceptable is when the terminal process
193correct place, e.g. on stderr of the connecting urxvtc client. 323correct place, e.g. on stderr of the connecting urxvtc client.
194 324
195=item $time = urxvt::NOW 325=item $time = urxvt::NOW
196 326
197Returns the "current time" (as per the event loop). 327Returns the "current time" (as per the event loop).
328
329=back
198 330
199=head2 RENDITION 331=head2 RENDITION
200 332
201Rendition bitsets contain information about colour, font, font styles and 333Rendition bitsets contain information about colour, font, font styles and
202similar information for each screen cell. 334similar information for each screen cell.
251=cut 383=cut
252 384
253package urxvt; 385package urxvt;
254 386
255use strict; 387use strict;
388use Scalar::Util ();
256 389
257our $term; 390our $TERM;
258our @HOOKNAME; 391our @HOOKNAME;
259our $LIBDIR; 392our $LIBDIR;
260 393
261BEGIN { 394BEGIN {
262 urxvt->bootstrap; 395 urxvt->bootstrap;
287 my $name = $HOOKNAME[$htype]; 420 my $name = $HOOKNAME[$htype];
288 421
289 my $ref = $pkg->can ("on_" . lc $name) 422 my $ref = $pkg->can ("on_" . lc $name)
290 or next; 423 or next;
291 424
292 $term->{_hook}[$htype]{$ref*1} = $ref; 425 $TERM->{_hook}[$htype]{$pkg} = $ref;
293 $hook_count[$htype]++ 426 $hook_count[$htype]++
294 or set_should_invoke $htype, 1; 427 or set_should_invoke $htype, 1;
295 } 428 }
296} 429}
297 430
319 452
320 $pkg 453 $pkg
321 } 454 }
322} 455}
323 456
457our $retval; # return value for urxvt
458
324# called by the rxvt core 459# called by the rxvt core
325sub invoke { 460sub invoke {
326 local $term = shift; 461 local $TERM = shift;
327 my $htype = shift; 462 my $htype = shift;
328 463
329 if ($htype == 0) { # INIT 464 if ($htype == 0) { # INIT
330 my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl"); 465 my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
331 466
332 for my $ext (split /:/, $term->resource ("perl_ext")) { 467 for my $ext (map { split /:/, $TERM->resource ("perl_ext_$_") } 1, 2) {
333 my @files = grep -f $_, map "$_/$ext", @dirs; 468 my @files = grep -f $_, map "$_/$ext", @dirs;
334 469
335 if (@files) { 470 if (@files) {
336 register_package script_package $files[0]; 471 register_package script_package $files[0];
337 } else { 472 } else {
338 warn "perl extension '$ext' not found in perl library search path\n"; 473 warn "perl extension '$ext' not found in perl library search path\n";
339 } 474 }
340 } 475 }
476 }
341 477
478 $retval = undef;
479
480 if (my $cb = $TERM->{_hook}[$htype]) {
481 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
482 if $verbosity >= 10;
483
484 keys %$cb;
485
486 while (my ($pkg, $cb) = each %$cb) {
487 $retval = $cb->(
488 $TERM->{_pkg}{$pkg} ||= do {
489 my $proxy = bless { }, urxvt::term::proxy::;
490 Scalar::Util::weaken ($proxy->{term} = $TERM);
491 $proxy
492 },
493 @_,
494 ) and last;
495 }
496 }
497
342 } elsif ($htype == 1) { # DESTROY 498 if ($htype == 1) { # DESTROY
499 # remove hooks if unused
343 if (my $hook = $term->{_hook}) { 500 if (my $hook = $TERM->{_hook}) {
344 for my $htype (0..$#$hook) { 501 for my $htype (0..$#$hook) {
345 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} } 502 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
346 or set_should_invoke $htype, 0; 503 or set_should_invoke $htype, 0;
347 } 504 }
348 } 505 }
506
507 # clear package objects
508 %$_ = () for values %{ $TERM->{_pkg} };
509
510 # clear package
511 %$TERM = ();
349 } 512 }
350 513
351 my $cb = $term->{_hook}[$htype] 514 $retval
352 or return;
353
354 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"
355 if $verbosity >= 10;
356
357 while (my ($k, $v) = each %$cb) {
358 return 1 if $v->($term, @_);
359 }
360
361 0
362} 515}
363 516
364=back 517sub urxvt::term::proxy::AUTOLOAD {
518 $urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/
519 or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";
520
521 eval qq{
522 sub $urxvt::term::proxy::AUTOLOAD {
523 my \$proxy = shift;
524 \$proxy->{term}->$1 (\@_)
525 }
526 1
527 } or die "FATAL: unable to compile method forwarder: $@";
528
529 goto &$urxvt::term::proxy::AUTOLOAD;
530}
365 531
366=head2 The C<urxvt::term> Class 532=head2 The C<urxvt::term> Class
367 533
368=over 4 534=over 4
535
536=item $term->destroy
537
538Destroy the terminal object (close the window, free resources etc.).
369 539
370=item $value = $term->resource ($name[, $newval]) 540=item $value = $term->resource ($name[, $newval])
371 541
372Returns the current resource value associated with a given name and 542Returns the current resource value associated with a given name and
373optionally sets a new value. Setting values is most useful in the C<init> 543optionally sets a new value. Setting values is most useful in the C<init>
391 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont 561 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
392 borderLess color cursorBlink cursorUnderline cutchars delete_key 562 borderLess color cursorBlink cursorUnderline cutchars delete_key
393 display_name embed ext_bwidth fade font geometry hold iconName 563 display_name embed ext_bwidth fade font geometry hold iconName
394 imFont imLocale inputMethod insecure int_bwidth intensityStyles 564 imFont imLocale inputMethod insecure int_bwidth intensityStyles
395 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier 565 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
396 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext 566 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
397 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd 567 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
398 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating 568 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
399 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput 569 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
400 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle 570 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
401 shade term_name title transparent transparent_all tripleclickwords 571 shade term_name title transparent transparent_all tripleclickwords
407 my ($self, $name) = (shift, shift); 577 my ($self, $name) = (shift, shift);
408 unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0); 578 unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
409 goto &urxvt::term::_resource; 579 goto &urxvt::term::_resource;
410} 580}
411 581
582=item $rend = $term->rstyle ([$new_rstyle])
583
584Return and optionally change the current rendition. Text that is output by
585the terminal application will use this style.
586
587=item ($row, $col) = $term->screen_cur ([$row, $col])
588
589Return the current coordinates of the text cursor position and optionally
590set it (which is usually bad as applications don't expect that).
591
412=item ($row, $col) = $term->selection_mark ([$row, $col]) 592=item ($row, $col) = $term->selection_mark ([$row, $col])
413 593
414=item ($row, $col) = $term->selection_beg ([$row, $col]) 594=item ($row, $col) = $term->selection_beg ([$row, $col])
415 595
416=item ($row, $col) = $term->selection_end ([$row, $col]) 596=item ($row, $col) = $term->selection_end ([$row, $col])
425 605
426=item $oldtext = $term->selection ([$newtext]) 606=item $oldtext = $term->selection ([$newtext])
427 607
428Return the current selection text and optionally replace it by C<$newtext>. 608Return the current selection text and optionally replace it by C<$newtext>.
429 609
430=item $term->scr_overlay ($x, $y, $text) 610#=item $term->overlay ($x, $y, $text)
431 611#
432Create a simple multi-line overlay box. See the next method for details. 612#Create a simple multi-line overlay box. See the next method for details.
433 613#
434=cut 614#=cut
435 615#
436sub urxvt::term::scr_overlay { 616#sub urxvt::term::scr_overlay {
437 my ($self, $x, $y, $text) = @_; 617# my ($self, $x, $y, $text) = @_;
438 618#
439 my @lines = split /\n/, $text; 619# my @lines = split /\n/, $text;
440 620#
441 my $w = 0; 621# my $w = 0;
442 for (map $self->strwidth ($_), @lines) { 622# for (map $self->strwidth ($_), @lines) {
443 $w = $_ if $w < $_; 623# $w = $_ if $w < $_;
444 } 624# }
445 625#
446 $self->scr_overlay_new ($x, $y, $w, scalar @lines); 626# $self->scr_overlay_new ($x, $y, $w, scalar @lines);
447 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines; 627# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
448} 628#}
449 629
450=item $term->scr_overlay_new ($x, $y, $width, $height) 630=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
451 631
452Create a new (empty) overlay at the given position with the given 632Create a new (empty) overlay at the given position with the given
453width/height. A border will be put around the box. If either C<$x> or 633width/height. C<$rstyle> defines the initial rendition style
454C<$y> is negative, then this is counted from the right/bottom side, 634(default: C<OVERLAY_RSTYLE>).
455respectively.
456 635
457=item $term->scr_overlay_off 636If C<$border> is C<2> (default), then a decorative border will be put
637around the box.
458 638
459Switch the overlay off again. 639If either C<$x> or C<$y> is negative, then this is counted from the
640right/bottom side, respectively.
460 641
461=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE) 642This method returns an urxvt::overlay object. The overlay will be visible
643as long as the perl object is referenced.
462 644
463Put a single character (specified numerically) at the given overlay 645The methods currently supported on C<urxvt::overlay> objects are:
464position.
465 646
647=over 4
648
466=item $term->scr_overlay_set ($x, $y, $text) 649=item $overlay->set ($x, $y, $text, $rend)
467 650
468Write a string at the given position into the overlay. 651Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
652text in rxvt-unicode's special encoding and an array of rendition values
653at a specific position inside the overlay.
654
655=item $overlay->hide
656
657If visible, hide the overlay, but do not destroy it.
658
659=item $overlay->show
660
661If hidden, display the overlay again.
662
663=back
469 664
470=item $cellwidth = $term->strwidth $string 665=item $cellwidth = $term->strwidth $string
471 666
472Returns the number of screen-cells this string would need. Correctly 667Returns the number of screen-cells this string would need. Correctly
473accounts for wide and combining characters. 668accounts for wide and combining characters.
477Convert the given text string into the corresponding locale encoding. 672Convert the given text string into the corresponding locale encoding.
478 673
479=item $string = $term->locale_decode $octets 674=item $string = $term->locale_decode $octets
480 675
481Convert the given locale-encoded octets into a perl string. 676Convert the given locale-encoded octets into a perl string.
677
678=item $term->scr_add_lines ($string)
679
680Write the given text string to the screen, as if output by the application
681running inside the terminal. It may not contain command sequences (escape
682codes), but is free to use line feeds, carriage returns and tabs. The
683string is a normal text string, not in locale-dependent encoding.
684
685Normally its not a good idea to use this function, as programs might be
686confused by changes in cursor position or scrolling. Its useful inside a
687C<on_add_lines> hook, though.
688
689=item $term->cmd_parse ($octets)
690
691Similar to C<scr_add_lines>, but the argument must be in the
692locale-specific encoding of the terminal and can contain command sequences
693(escape codes) that will be interpreted.
482 694
483=item $term->tt_write ($octets) 695=item $term->tt_write ($octets)
484 696
485Write the octets given in C<$data> to the tty (i.e. as program input). To 697Write the octets given in C<$data> to the tty (i.e. as program input). To
486pass characters instead of octets, you should convert your strings first 698pass characters instead of octets, you should convert your strings first
487to the locale-specific encoding using C<< $term->locale_encode >>. 699to the locale-specific encoding using C<< $term->locale_encode >>.
488 700
701=item $window_width = $term->width
702
703=item $window_height = $term->height
704
705=item $font_width = $term->fwidth
706
707=item $font_height = $term->fheight
708
709=item $font_ascent = $term->fbase
710
489=item $nrow = $term->nrow 711=item $terminal_rows = $term->nrow
490 712
491=item $ncol = $term->ncol 713=item $terminal_columns = $term->ncol
492 714
493Return the number of rows/columns of the terminal window (i.e. as 715=item $has_focus = $term->focus
494specified by C<-geometry>, excluding any scrollback).
495 716
496=item $nsaved = $term->nsaved 717=item $is_mapped = $term->mapped
497 718
498Returns the number of lines in the scrollback buffer. 719=item $max_scrollback = $term->saveLines
720
721=item $nrow_plus_saveLines = $term->total_rows
722
723=item $lines_in_scrollback = $term->nsaved
724
725Return various integers describing terminal characteristics.
499 726
500=item $view_start = $term->view_start ([$newvalue]) 727=item $view_start = $term->view_start ([$newvalue])
501 728
502Returns the negative row number of the topmost line. Minimum value is 729Returns the negative row number of the topmost line. Minimum value is
503C<0>, which displays the normal terminal contents. Larger values scroll 730C<0>, which displays the normal terminal contents. Larger values scroll
514=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]]) 741=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
515 742
516Returns the text of the entire row with number C<$row_number>. Row C<0> 743Returns the text of the entire row with number C<$row_number>. Row C<0>
517is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost 744is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
518terminal line. The scrollback buffer starts at line C<-1> and extends to 745terminal line. The scrollback buffer starts at line C<-1> and extends to
519line C<< -$term->nsaved >>. 746line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
747is requested.
520 748
521If C<$new_text> is specified, it will replace characters in the current 749If C<$new_text> is specified, it will replace characters in the current
522line, starting at column C<$start_col> (default C<0>), which is useful 750line, starting at column C<$start_col> (default C<0>), which is useful
523to replace only parts of a line. The font index in the rendition will 751to replace only parts of a line. The font index in the rendition will
524automatically be updated. 752automatically be updated.
546 774
547See the section on RENDITION, above. 775See the section on RENDITION, above.
548 776
549=item $length = $term->ROW_l ($row_number[, $new_length]) 777=item $length = $term->ROW_l ($row_number[, $new_length])
550 778
551Returns the number of screen cells that are in use ("the line length"). If 779Returns the number of screen cells that are in use ("the line
552it is C<-1>, then the line is part of a multiple-row logical "line", which 780length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
553means all characters are in use and it is continued on the next row. 781line is joined with the following one.
554 782
783=item $bool = $term->is_longer ($row_number)
784
785Returns true if the row is part of a multiple-row logical "line" (i.e.
786joined with the following row), which means all characters are in use
787and it is continued on the next row (and possibly a continuation of the
788previous row(s)).
789
790=item $line = $term->line ($row_number)
791
792Create and return a new C<urxvt::line> object that stores information
793about the logical line that row C<$row_number> is part of. It supports the
794following methods:
795
796=over 4
797
798=item $text = $line->t ([$new_text])
799
800Returns or replaces the full text of the line, similar to C<ROW_t>
801
802=item $rend = $line->r ([$new_rend])
803
804Returns or replaces the full rendition array of the line, similar to C<ROW_r>
805
806=item $length = $line->l
807
808Returns the length of the line in cells, similar to C<ROW_l>.
809
810=item $rownum = $line->beg
811
812=item $rownum = $line->end
813
814Return the row number of the first/last row of the line, respectively.
815
816=item $offset = $line->offset_of ($row, $col)
817
818Returns the character offset of the given row|col pair within the logical
819line.
820
821=item ($row, $col) = $line->coord_of ($offset)
822
823Translates a string offset into terminal coordinates again.
824
825=back
826
827=cut
828
829sub urxvt::term::line {
830 my ($self, $row) = @_;
831
832 my $maxrow = $self->nrow - 1;
833
834 my ($beg, $end) = ($row, $row);
835
836 --$beg while $self->ROW_is_longer ($beg - 1);
837 ++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
838
839 bless {
840 term => $self,
841 beg => $beg,
842 end => $end,
843 ncol => $self->ncol,
844 len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
845 }, urxvt::line::
846}
847
848sub urxvt::line::t {
849 my ($self) = @_;
850
851 if (@_ > 1)
852 {
853 $self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
854 for $self->{beg} .. $self->{end};
855 }
856
857 defined wantarray &&
858 substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
859 0, $self->{len}
860}
861
862sub urxvt::line::r {
863 my ($self) = @_;
864
865 if (@_ > 1)
866 {
867 $self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
868 for $self->{beg} .. $self->{end};
869 }
870
871 if (defined wantarray) {
872 my $rend = [
873 map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
874 ];
875 $#$rend = $self->{len} - 1;
876 return $rend;
877 }
878
879 ()
880}
881
882sub urxvt::line::beg { $_[0]{beg} }
883sub urxvt::line::end { $_[0]{end} }
884sub urxvt::line::l { $_[0]{len} }
885
886sub urxvt::line::offset_of {
887 my ($self, $row, $col) = @_;
888
889 ($row - $self->{beg}) * $self->{ncol} + $col
890}
891
892sub urxvt::line::coord_of {
893 my ($self, $offset) = @_;
894
895 use integer;
896
897 (
898 $offset / $self->{ncol} + $self->{beg},
899 $offset % $self->{ncol}
900 )
901}
902
903=item ($row, $col) = $line->coord_of ($offset)
555=item $text = $term->special_encode $string 904=item $text = $term->special_encode $string
556 905
557Converts a perl string into the special encoding used by rxvt-unicode, 906Converts a perl string into the special encoding used by rxvt-unicode,
558where one character corresponds to one screen cell. See 907where one character corresponds to one screen cell. See
559C<< $term->ROW_t >> for details. 908C<< $term->ROW_t >> for details.
568=head2 The C<urxvt::timer> Class 917=head2 The C<urxvt::timer> Class
569 918
570This class implements timer watchers/events. Time is represented as a 919This class implements timer watchers/events. Time is represented as a
571fractional number of seconds since the epoch. Example: 920fractional number of seconds since the epoch. Example:
572 921
573 # create a digital clock display in upper right corner 922 $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
574 $term->{timer} = urxvt::timer 923 $term->{timer} = urxvt::timer
575 ->new 924 ->new
576 ->start (urxvt::NOW) 925 ->interval (1)
577 ->cb (sub { 926 ->cb (sub {
578 my ($timer) = @_;
579 my $time = $timer->at;
580 $timer->start ($time + 1);
581 $self->scr_overlay (-1, 0, 927 $term->{overlay}->set (0, 0,
582 POSIX::strftime "%H:%M:%S", localtime $time); 928 sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
583 }); 929 });
584 930
585=over 4 931=over 4
586 932
587=item $timer = new urxvt::timer 933=item $timer = new urxvt::timer
588 934
589Create a new timer object in stopped state. 935Create a new timer object in started state. It is scheduled to fire
936immediately.
590 937
591=item $timer = $timer->cb (sub { my ($timer) = @_; ... }) 938=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
592 939
593Set the callback to be called when the timer triggers. 940Set the callback to be called when the timer triggers.
594 941
597Return the time this watcher will fire next. 944Return the time this watcher will fire next.
598 945
599=item $timer = $timer->set ($tstamp) 946=item $timer = $timer->set ($tstamp)
600 947
601Set the time the event is generated to $tstamp. 948Set the time the event is generated to $tstamp.
949
950=item $timer = $timer->interval ($interval)
951
952Normally (and when C<$interval> is C<0>), the timer will automatically
953stop after it has fired once. If C<$interval> is non-zero, then the timer
954is automatically rescheduled at the given intervals.
602 955
603=item $timer = $timer->start 956=item $timer = $timer->start
604 957
605Start the timer. 958Start the timer.
606 959
669This variable controls the verbosity level of the perl extension. Higher 1022This variable controls the verbosity level of the perl extension. Higher
670numbers indicate more verbose output. 1023numbers indicate more verbose output.
671 1024
672=over 4 1025=over 4
673 1026
674=item 0 - only fatal messages 1027=item =0 - only fatal messages
675 1028
676=item 3 - script loading and management 1029=item =3 - script loading and management
677 1030
678=item 10 - all events received 1031=item =10 - all events received
679 1032
680=back 1033=back
681 1034
682=head1 AUTHOR 1035=head1 AUTHOR
683 1036

Diff Legend

Removed lines
+ Added lines
< Changed lines
> Changed lines