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Revision 1.19 by root, Tue Jan 3 02:42:17 2006 UTC vs.
Revision 1.42 by root, Fri Jan 6 21:06:09 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 display filtering (C<on_line_update>) to underline urls.
68
69=item block-graphics-to-ascii
70
71A not very useful example of filtering all text output to the terminal,
72by replacing all line-drawing characters (U+2500 .. U+259F) by a
73similar-looking ascii character.
74
75=item example-refresh-hooks
57 76
58Displays a very simple digital clock in the upper right corner of the 77Displays a very simple digital clock in the upper right corner of the
59window. Illustrates overwriting the refresh callbacks to create your own 78window. Illustrates overwriting the refresh callbacks to create your own
60overlays or changes. 79overlays or changes.
61 80
62=item simple-overlay-clock
63
64Displays a digital clock using the built-in overlay (colourful, useless).
65
66=back 81=back
67 82
68=head2 General API Considerations 83=head2 General API Considerations
69 84
70All objects (such as terminals, time watchers etc.) are typical 85All objects (such as terminals, time watchers etc.) are typical
71reference-to-hash objects. The hash can be used to store anything you 86reference-to-hash objects. The hash can be used to store anything you
72like. All members starting with an underscore (such as C<_ptr> or 87like. All members starting with an underscore (such as C<_ptr> or
73C<_hook>) are reserved for internal uses and must not be accessed or 88C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
74modified). 89modified).
75 90
76When objects are destroyed on the C++ side, the perl object hashes are 91When 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 92emptied, 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 93the like inside the terminal object so they get destroyed as soon as the
79terminal is destroyed. 94terminal is destroyed.
80 95
96Argument names also often indicate the type of a parameter. Here are some
97hints on what they mean:
98
99=over 4
100
101=item $text
102
103Rxvt-unicodes special way of encoding text, where one "unicode" character
104always represents one screen cell. See L<row_t> for a discussion of this format.
105
106=item $string
107
108A perl text string, with an emphasis on I<text>. It can store all unicode
109characters and is to be distinguished with text encoded in a specific
110encoding (often locale-specific) and binary data.
111
112=item $octets
113
114Either binary data or - more common - a text string encoded in a
115locale-specific way.
116
117=back
118
81=head2 Hooks 119=head2 Hooks
82 120
83The following subroutines can be declared in loaded scripts, and will be called 121The following subroutines can be declared in loaded scripts, and will be
84whenever the relevant event happens. 122called whenever the relevant event happens.
123
124The first argument passed to them is an object private to each terminal
125and extension package. You can call all C<urxvt::term> methods on it, but
126its not a real C<urxvt::term> object. Instead, the real C<urxvt::term>
127object that is shared between all packages is stored in the C<term>
128member.
85 129
86All of them must return a boolean value. If it is true, then the event 130All 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, 131counts 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. 132and the relevant action might not be carried out by the C++ code.
89 133
92=over 4 136=over 4
93 137
94=item on_init $term 138=item on_init $term
95 139
96Called after a new terminal object has been initialized, but before 140Called after a new terminal object has been initialized, but before
97windows are created or the command gets run. 141windows are created or the command gets run. Most methods are unsafe to
142call or deliver senseless data, as terminal size and other characteristics
143have not yet been determined. You can safely query and change resources,
144though.
98 145
99=item on_reset $term 146=item on_reset $term
100 147
101Called after the screen is "reset" for any reason, such as resizing or 148Called 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 149control sequences. Here is where you can react on changes to size-related
122requested from the server. The selection text can be queried and changed 169requested from the server. The selection text can be queried and changed
123by calling C<< $term->selection >>. 170by calling C<< $term->selection >>.
124 171
125Returning a true value aborts selection grabbing. It will still be hilighted. 172Returning a true value aborts selection grabbing. It will still be hilighted.
126 173
174=item on_sel_extend $term
175
176Called whenever the user tries to extend the selection (e.g. with a double
177click) and is either supposed to return false (normal operation), or
178should extend the selection itelf and return true to suppress the built-in
179processing.
180
181See the F<selection> example extension.
182
127=item on_focus_in $term 183=item on_focus_in $term
128 184
129Called whenever the window gets the keyboard focus, before urxvt does 185Called whenever the window gets the keyboard focus, before urxvt does
130focus in processing. 186focus in processing.
131 187
151number of lines that will be in the scrollback buffer. 207number of lines that will be in the scrollback buffer.
152 208
153=item on_tty_activity $term *NYI* 209=item on_tty_activity $term *NYI*
154 210
155Called whenever the program(s) running in the urxvt window send output. 211Called whenever the program(s) running in the urxvt window send output.
212
213=item on_osc_seq $term, $string
214
215Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
216operating system command) is processed. Cursor position and other state
217information is up-to-date when this happens. For interoperability, the
218string should start with the extension name and a colon, to distinguish
219it from commands for other extensions, and this might be enforced in the
220future.
221
222Be careful not ever to trust (in a security sense) the data you receive,
223as its source can not easily be controleld (e-mail content, messages from
224other users on the same system etc.).
225
226=item on_add_lines $term, $string
227
228Called whenever text is about to be output, with the text as argument. You
229can filter/change and output the text yourself by returning a true value
230and calling C<< $term->scr_add_lines >> yourself. Please note that this
231might be very slow, however, as your hook is called for B<all> text being
232output.
233
234=item on_line_update $term, $row
235
236Called whenever a line was updated or changed. Can be used to filter
237screen output (e.g. underline urls or other useless stuff). Only lines
238that are being shown will be filtered, and, due to performance reasons,
239not always immediately.
240
241The row number is always the topmost row of the line if the line spans
242multiple rows.
243
244Please note that, if you change the line, then the hook might get called
245later with the already-modified line (e.g. if unrelated parts change), so
246you cannot just toggle rendition bits, but only set them.
156 247
157=item on_refresh_begin $term 248=item on_refresh_begin $term
158 249
159Called just before the screen gets redrawn. Can be used for overlay 250Called just before the screen gets redrawn. Can be used for overlay
160or similar effects by modify terminal contents in refresh_begin, and 251or similar effects by modify terminal contents in refresh_begin, and
169 260
170Called whenever the user presses a key combination that has a 261Called whenever the user presses a key combination that has a
171C<perl:string> action bound to it (see description of the B<keysym> 262C<perl:string> action bound to it (see description of the B<keysym>
172resource in the @@RXVT_NAME@@(1) manpage). 263resource in the @@RXVT_NAME@@(1) manpage).
173 264
265=item on_key_press $term, $event, $octets
266
267=item on_key_release $term, $event
268
269=item on_button_press $term, $event
270
271=item on_button_release $term, $event
272
273=item on_motion_notify $term, $event
274
275Called whenever the corresponding X event is received for the terminal If
276the hook returns true, then the even will be ignored by rxvt-unicode.
277
278The event is a hash with most values as named by Xlib (see the XEvent
279manpage), with the additional members C<row> and C<col>, which are the row
280and column under the mouse cursor.
281
282C<on_key_press> additionally receives the string rxvt-unicode would
283output, if any, in locale-specific encoding.
284
285subwindow.
286
287=back
288
289=head2 Variables in the C<urxvt> Package
290
291=over 4
292
293=item $urxvt::TERM
294
295The current terminal. Whenever a callback/Hook is bein executed, this
296variable stores the current C<urxvt::term> object.
297
174=back 298=back
175 299
176=head2 Functions in the C<urxvt> Package 300=head2 Functions in the C<urxvt> Package
177 301
178=over 4 302=over 4
303
304=item $term = new urxvt [arg...]
305
306Creates a new terminal, very similar as if you had started it with
307C<system $binfile, arg...>. Croaks (and probably outputs an error message)
308if the new instance couldn't be created. Returns C<undef> if the new
309instance didn't initialise perl, and the terminal object otherwise. The
310C<init> and C<start> hooks will be called during the call.
179 311
180=item urxvt::fatal $errormessage 312=item urxvt::fatal $errormessage
181 313
182Fatally aborts execution with the given error message. Avoid at all 314Fatally aborts execution with the given error message. Avoid at all
183costs! The only time this is acceptable is when the terminal process 315costs! The only time this is acceptable is when the terminal process
193correct place, e.g. on stderr of the connecting urxvtc client. 325correct place, e.g. on stderr of the connecting urxvtc client.
194 326
195=item $time = urxvt::NOW 327=item $time = urxvt::NOW
196 328
197Returns the "current time" (as per the event loop). 329Returns the "current time" (as per the event loop).
330
331=back
198 332
199=head2 RENDITION 333=head2 RENDITION
200 334
201Rendition bitsets contain information about colour, font, font styles and 335Rendition bitsets contain information about colour, font, font styles and
202similar information for each screen cell. 336similar information for each screen cell.
251=cut 385=cut
252 386
253package urxvt; 387package urxvt;
254 388
255use strict; 389use strict;
390use Scalar::Util ();
256 391
257our $term; 392our $TERM;
258our @HOOKNAME; 393our @HOOKNAME;
259our $LIBDIR; 394our $LIBDIR;
260 395
261BEGIN { 396BEGIN {
262 urxvt->bootstrap; 397 urxvt->bootstrap;
287 my $name = $HOOKNAME[$htype]; 422 my $name = $HOOKNAME[$htype];
288 423
289 my $ref = $pkg->can ("on_" . lc $name) 424 my $ref = $pkg->can ("on_" . lc $name)
290 or next; 425 or next;
291 426
292 $term->{_hook}[$htype]{$ref*1} = $ref; 427 $TERM->{_hook}[$htype]{$pkg} = $ref;
293 $hook_count[$htype]++ 428 $hook_count[$htype]++
294 or set_should_invoke $htype, 1; 429 or set_should_invoke $htype, 1;
295 } 430 }
296} 431}
297 432
319 454
320 $pkg 455 $pkg
321 } 456 }
322} 457}
323 458
459our $retval; # return value for urxvt
460
324# called by the rxvt core 461# called by the rxvt core
325sub invoke { 462sub invoke {
326 local $term = shift; 463 local $TERM = shift;
327 my $htype = shift; 464 my $htype = shift;
328 465
329 if ($htype == 0) { # INIT 466 if ($htype == 0) { # INIT
330 my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl"); 467 my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
331 468
332 for my $ext (split /:/, $term->resource ("perl_ext")) { 469 for my $ext (map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
333 my @files = grep -f $_, map "$_/$ext", @dirs; 470 my @files = grep -f $_, map "$_/$ext", @dirs;
334 471
335 if (@files) { 472 if (@files) {
336 register_package script_package $files[0]; 473 register_package script_package $files[0];
337 } else { 474 } else {
338 warn "perl extension '$ext' not found in perl library search path\n"; 475 warn "perl extension '$ext' not found in perl library search path\n";
339 } 476 }
340 } 477 }
478 }
341 479
480 $retval = undef;
481
482 if (my $cb = $TERM->{_hook}[$htype]) {
483 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
484 if $verbosity >= 10;
485
486 keys %$cb;
487
488 while (my ($pkg, $cb) = each %$cb) {
489 $retval = $cb->(
490 $TERM->{_pkg}{$pkg} ||= do {
491 my $proxy = bless { }, urxvt::term::proxy::;
492 Scalar::Util::weaken ($proxy->{term} = $TERM);
493 $proxy
494 },
495 @_,
496 ) and last;
497 }
498 }
499
342 } elsif ($htype == 1) { # DESTROY 500 if ($htype == 1) { # DESTROY
501 # remove hooks if unused
343 if (my $hook = $term->{_hook}) { 502 if (my $hook = $TERM->{_hook}) {
344 for my $htype (0..$#$hook) { 503 for my $htype (0..$#$hook) {
345 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} } 504 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
346 or set_should_invoke $htype, 0; 505 or set_should_invoke $htype, 0;
347 } 506 }
348 } 507 }
508
509 # clear package objects
510 %$_ = () for values %{ $TERM->{_pkg} };
511
512 # clear package
513 %$TERM = ();
349 } 514 }
350 515
351 my $cb = $term->{_hook}[$htype] 516 $retval
352 or return;
353
354 verbose 10, "$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} 517}
363 518
364=back 519sub urxvt::term::proxy::AUTOLOAD {
520 $urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/
521 or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";
522
523 eval qq{
524 sub $urxvt::term::proxy::AUTOLOAD {
525 my \$proxy = shift;
526 \$proxy->{term}->$1 (\@_)
527 }
528 1
529 } or die "FATAL: unable to compile method forwarder: $@";
530
531 goto &$urxvt::term::proxy::AUTOLOAD;
532}
365 533
366=head2 The C<urxvt::term> Class 534=head2 The C<urxvt::term> Class
367 535
368=over 4 536=over 4
537
538=item $term->destroy
539
540Destroy the terminal object (close the window, free resources etc.).
369 541
370=item $value = $term->resource ($name[, $newval]) 542=item $value = $term->resource ($name[, $newval])
371 543
372Returns the current resource value associated with a given name and 544Returns the current resource value associated with a given name and
373optionally sets a new value. Setting values is most useful in the C<init> 545optionally sets a new value. Setting values is most useful in the C<init>
391 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont 563 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
392 borderLess color cursorBlink cursorUnderline cutchars delete_key 564 borderLess color cursorBlink cursorUnderline cutchars delete_key
393 display_name embed ext_bwidth fade font geometry hold iconName 565 display_name embed ext_bwidth fade font geometry hold iconName
394 imFont imLocale inputMethod insecure int_bwidth intensityStyles 566 imFont imLocale inputMethod insecure int_bwidth intensityStyles
395 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier 567 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
396 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext 568 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
397 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd 569 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
398 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating 570 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
399 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput 571 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
400 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle 572 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
401 shade term_name title transparent transparent_all tripleclickwords 573 shade term_name title transparent transparent_all tripleclickwords
407 my ($self, $name) = (shift, shift); 579 my ($self, $name) = (shift, shift);
408 unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0); 580 unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
409 goto &urxvt::term::_resource; 581 goto &urxvt::term::_resource;
410} 582}
411 583
584=item $rend = $term->rstyle ([$new_rstyle])
585
586Return and optionally change the current rendition. Text that is output by
587the terminal application will use this style.
588
589=item ($row, $col) = $term->screen_cur ([$row, $col])
590
591Return the current coordinates of the text cursor position and optionally
592set it (which is usually bad as applications don't expect that).
593
412=item ($row, $col) = $term->selection_mark ([$row, $col]) 594=item ($row, $col) = $term->selection_mark ([$row, $col])
413 595
414=item ($row, $col) = $term->selection_beg ([$row, $col]) 596=item ($row, $col) = $term->selection_beg ([$row, $col])
415 597
416=item ($row, $col) = $term->selection_end ([$row, $col]) 598=item ($row, $col) = $term->selection_end ([$row, $col])
425 607
426=item $oldtext = $term->selection ([$newtext]) 608=item $oldtext = $term->selection ([$newtext])
427 609
428Return the current selection text and optionally replace it by C<$newtext>. 610Return the current selection text and optionally replace it by C<$newtext>.
429 611
430=item $term->scr_overlay ($x, $y, $text) 612#=item $term->overlay ($x, $y, $text)
431 613#
432Create a simple multi-line overlay box. See the next method for details. 614#Create a simple multi-line overlay box. See the next method for details.
433 615#
434=cut 616#=cut
435 617#
436sub urxvt::term::scr_overlay { 618#sub urxvt::term::scr_overlay {
437 my ($self, $x, $y, $text) = @_; 619# my ($self, $x, $y, $text) = @_;
438 620#
439 my @lines = split /\n/, $text; 621# my @lines = split /\n/, $text;
440 622#
441 my $w = 0; 623# my $w = 0;
442 for (map $self->strwidth ($_), @lines) { 624# for (map $self->strwidth ($_), @lines) {
443 $w = $_ if $w < $_; 625# $w = $_ if $w < $_;
444 } 626# }
445 627#
446 $self->scr_overlay_new ($x, $y, $w, scalar @lines); 628# $self->scr_overlay_new ($x, $y, $w, scalar @lines);
447 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines; 629# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
448} 630#}
449 631
450=item $term->scr_overlay_new ($x, $y, $width, $height) 632=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
451 633
452Create a new (empty) overlay at the given position with the given 634Create a new (empty) overlay at the given position with the given
453width/height. A border will be put around the box. If either C<$x> or 635width/height. C<$rstyle> defines the initial rendition style
454C<$y> is negative, then this is counted from the right/bottom side, 636(default: C<OVERLAY_RSTYLE>).
455respectively.
456 637
457=item $term->scr_overlay_off 638If C<$border> is C<2> (default), then a decorative border will be put
639around the box.
458 640
459Switch the overlay off again. 641If either C<$x> or C<$y> is negative, then this is counted from the
642right/bottom side, respectively.
460 643
461=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE) 644This method returns an urxvt::overlay object. The overlay will be visible
645as long as the perl object is referenced.
462 646
463Put a single character (specified numerically) at the given overlay 647The methods currently supported on C<urxvt::overlay> objects are:
464position.
465 648
649=over 4
650
466=item $term->scr_overlay_set ($x, $y, $text) 651=item $overlay->set ($x, $y, $text, $rend)
467 652
468Write a string at the given position into the overlay. 653Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
654text in rxvt-unicode's special encoding and an array of rendition values
655at a specific position inside the overlay.
469 656
657=item $overlay->hide
658
659If visible, hide the overlay, but do not destroy it.
660
661=item $overlay->show
662
663If hidden, display the overlay again.
664
665=back
666
470=item $cellwidth = $term->strwidth $string 667=item $cellwidth = $term->strwidth ($string)
471 668
472Returns the number of screen-cells this string would need. Correctly 669Returns the number of screen-cells this string would need. Correctly
473accounts for wide and combining characters. 670accounts for wide and combining characters.
474 671
475=item $octets = $term->locale_encode $string 672=item $octets = $term->locale_encode ($string)
476 673
477Convert the given text string into the corresponding locale encoding. 674Convert the given text string into the corresponding locale encoding.
478 675
479=item $string = $term->locale_decode $octets 676=item $string = $term->locale_decode ($octets)
480 677
481Convert the given locale-encoded octets into a perl string. 678Convert the given locale-encoded octets into a perl string.
679
680=item $term->scr_add_lines ($string)
681
682Write the given text string to the screen, as if output by the application
683running inside the terminal. It may not contain command sequences (escape
684codes), but is free to use line feeds, carriage returns and tabs. The
685string is a normal text string, not in locale-dependent encoding.
686
687Normally its not a good idea to use this function, as programs might be
688confused by changes in cursor position or scrolling. Its useful inside a
689C<on_add_lines> hook, though.
690
691=item $term->cmd_parse ($octets)
692
693Similar to C<scr_add_lines>, but the argument must be in the
694locale-specific encoding of the terminal and can contain command sequences
695(escape codes) that will be interpreted.
482 696
483=item $term->tt_write ($octets) 697=item $term->tt_write ($octets)
484 698
485Write the octets given in C<$data> to the tty (i.e. as program input). To 699Write the octets given in C<$data> to the tty (i.e. as program input). To
486pass characters instead of octets, you should convert your strings first 700pass characters instead of octets, you should convert your strings first
487to the locale-specific encoding using C<< $term->locale_encode >>. 701to the locale-specific encoding using C<< $term->locale_encode >>.
488 702
703=item $windowid = $term->parent
704
705Return the window id of the toplevel window.
706
707=item $windowid = $term->vt
708
709Return the window id of the terminal window.
710
711=item $window_width = $term->width
712
713=item $window_height = $term->height
714
715=item $font_width = $term->fwidth
716
717=item $font_height = $term->fheight
718
719=item $font_ascent = $term->fbase
720
489=item $nrow = $term->nrow 721=item $terminal_rows = $term->nrow
490 722
491=item $ncol = $term->ncol 723=item $terminal_columns = $term->ncol
492 724
493Return the number of rows/columns of the terminal window (i.e. as 725=item $has_focus = $term->focus
494specified by C<-geometry>, excluding any scrollback).
495 726
496=item $nsaved = $term->nsaved 727=item $is_mapped = $term->mapped
497 728
498Returns the number of lines in the scrollback buffer. 729=item $max_scrollback = $term->saveLines
730
731=item $nrow_plus_saveLines = $term->total_rows
732
733=item $lines_in_scrollback = $term->nsaved
734
735Return various integers describing terminal characteristics.
499 736
500=item $view_start = $term->view_start ([$newvalue]) 737=item $view_start = $term->view_start ([$newvalue])
501 738
502Returns the negative row number of the topmost line. Minimum value is 739Returns the negative row number of the topmost line. Minimum value is
503C<0>, which displays the normal terminal contents. Larger values scroll 740C<0>, which displays the normal terminal contents. Larger values scroll
514=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]]) 751=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
515 752
516Returns the text of the entire row with number C<$row_number>. Row C<0> 753Returns 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 754is 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 755terminal line. The scrollback buffer starts at line C<-1> and extends to
519line C<< -$term->nsaved >>. 756line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
757is requested.
520 758
521If C<$new_text> is specified, it will replace characters in the current 759If C<$new_text> is specified, it will replace characters in the current
522line, starting at column C<$start_col> (default C<0>), which is useful 760line, starting at column C<$start_col> (default C<0>), which is useful
523to replace only parts of a line. The font index in the rendition will 761to replace only parts of a line. The font index in the rendition will
524automatically be updated. 762automatically be updated.
546 784
547See the section on RENDITION, above. 785See the section on RENDITION, above.
548 786
549=item $length = $term->ROW_l ($row_number[, $new_length]) 787=item $length = $term->ROW_l ($row_number[, $new_length])
550 788
551Returns the number of screen cells that are in use ("the line length"). If 789Returns 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 790length"). 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. 791line is joined with the following one.
554 792
793=item $bool = $term->is_longer ($row_number)
794
795Returns true if the row is part of a multiple-row logical "line" (i.e.
796joined with the following row), which means all characters are in use
797and it is continued on the next row (and possibly a continuation of the
798previous row(s)).
799
800=item $line = $term->line ($row_number)
801
802Create and return a new C<urxvt::line> object that stores information
803about the logical line that row C<$row_number> is part of. It supports the
804following methods:
805
806=over 4
807
808=item $text = $line->t ([$new_text])
809
810Returns or replaces the full text of the line, similar to C<ROW_t>
811
812=item $rend = $line->r ([$new_rend])
813
814Returns or replaces the full rendition array of the line, similar to C<ROW_r>
815
816=item $length = $line->l
817
818Returns the length of the line in cells, similar to C<ROW_l>.
819
820=item $rownum = $line->beg
821
822=item $rownum = $line->end
823
824Return the row number of the first/last row of the line, respectively.
825
826=item $offset = $line->offset_of ($row, $col)
827
828Returns the character offset of the given row|col pair within the logical
829line.
830
831=item ($row, $col) = $line->coord_of ($offset)
832
833Translates a string offset into terminal coordinates again.
834
835=back
836
837=cut
838
839sub urxvt::term::line {
840 my ($self, $row) = @_;
841
842 my $maxrow = $self->nrow - 1;
843
844 my ($beg, $end) = ($row, $row);
845
846 --$beg while $self->ROW_is_longer ($beg - 1);
847 ++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
848
849 bless {
850 term => $self,
851 beg => $beg,
852 end => $end,
853 ncol => $self->ncol,
854 len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
855 }, urxvt::line::
856}
857
858sub urxvt::line::t {
859 my ($self) = @_;
860
861 if (@_ > 1)
862 {
863 $self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
864 for $self->{beg} .. $self->{end};
865 }
866
867 defined wantarray &&
868 substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
869 0, $self->{len}
870}
871
872sub urxvt::line::r {
873 my ($self) = @_;
874
875 if (@_ > 1)
876 {
877 $self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
878 for $self->{beg} .. $self->{end};
879 }
880
881 if (defined wantarray) {
882 my $rend = [
883 map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
884 ];
885 $#$rend = $self->{len} - 1;
886 return $rend;
887 }
888
889 ()
890}
891
892sub urxvt::line::beg { $_[0]{beg} }
893sub urxvt::line::end { $_[0]{end} }
894sub urxvt::line::l { $_[0]{len} }
895
896sub urxvt::line::offset_of {
897 my ($self, $row, $col) = @_;
898
899 ($row - $self->{beg}) * $self->{ncol} + $col
900}
901
902sub urxvt::line::coord_of {
903 my ($self, $offset) = @_;
904
905 use integer;
906
907 (
908 $offset / $self->{ncol} + $self->{beg},
909 $offset % $self->{ncol}
910 )
911}
912
913=item ($row, $col) = $line->coord_of ($offset)
555=item $text = $term->special_encode $string 914=item $text = $term->special_encode $string
556 915
557Converts a perl string into the special encoding used by rxvt-unicode, 916Converts a perl string into the special encoding used by rxvt-unicode,
558where one character corresponds to one screen cell. See 917where one character corresponds to one screen cell. See
559C<< $term->ROW_t >> for details. 918C<< $term->ROW_t >> for details.
568=head2 The C<urxvt::timer> Class 927=head2 The C<urxvt::timer> Class
569 928
570This class implements timer watchers/events. Time is represented as a 929This class implements timer watchers/events. Time is represented as a
571fractional number of seconds since the epoch. Example: 930fractional number of seconds since the epoch. Example:
572 931
573 # create a digital clock display in upper right corner 932 $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
574 $term->{timer} = urxvt::timer 933 $term->{timer} = urxvt::timer
575 ->new 934 ->new
576 ->start (urxvt::NOW) 935 ->interval (1)
577 ->cb (sub { 936 ->cb (sub {
578 my ($timer) = @_;
579 my $time = $timer->at;
580 $timer->start ($time + 1);
581 $self->scr_overlay (-1, 0, 937 $term->{overlay}->set (0, 0,
582 POSIX::strftime "%H:%M:%S", localtime $time); 938 sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
583 }); 939 });
584 940
585=over 4 941=over 4
586 942
587=item $timer = new urxvt::timer 943=item $timer = new urxvt::timer
588 944
589Create a new timer object in stopped state. 945Create a new timer object in started state. It is scheduled to fire
946immediately.
590 947
591=item $timer = $timer->cb (sub { my ($timer) = @_; ... }) 948=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
592 949
593Set the callback to be called when the timer triggers. 950Set the callback to be called when the timer triggers.
594 951
597Return the time this watcher will fire next. 954Return the time this watcher will fire next.
598 955
599=item $timer = $timer->set ($tstamp) 956=item $timer = $timer->set ($tstamp)
600 957
601Set the time the event is generated to $tstamp. 958Set the time the event is generated to $tstamp.
959
960=item $timer = $timer->interval ($interval)
961
962Normally (and when C<$interval> is C<0>), the timer will automatically
963stop after it has fired once. If C<$interval> is non-zero, then the timer
964is automatically rescheduled at the given intervals.
602 965
603=item $timer = $timer->start 966=item $timer = $timer->start
604 967
605Start the timer. 968Start the timer.
606 969
669This variable controls the verbosity level of the perl extension. Higher 1032This variable controls the verbosity level of the perl extension. Higher
670numbers indicate more verbose output. 1033numbers indicate more verbose output.
671 1034
672=over 4 1035=over 4
673 1036
674=item 0 - only fatal messages 1037=item =0 - only fatal messages
675 1038
676=item 3 - script loading and management 1039=item =3 - script loading and management
677 1040
678=item 10 - all events received 1041=item =10 - all events received
679 1042
680=back 1043=back
681 1044
682=head1 AUTHOR 1045=head1 AUTHOR
683 1046

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