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Revision 1.20 by root, Tue Jan 3 04:18:47 2006 UTC vs.
Revision 1.40 by root, Fri Jan 6 05:37:59 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
54=back 59=back
55 60
56=item digital-clock 61=item digital-clock
57 62
58Displays a digital clock using the built-in overlay. 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.
59 68
60=item example-refresh-hooks 69=item example-refresh-hooks
61 70
62Displays 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
63window. Illustrates overwriting the refresh callbacks to create your own 72window. Illustrates overwriting the refresh callbacks to create your own
64overlays or changes. 73overlays or changes.
65 74
75=item example-filter-input
76
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.
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 If
277the hook returns true, then the even will be ignored by rxvt-unicode.
278
279The event is a hash with most values as named by Xlib (see the XEvent
280manpage), with the additional members C<row> and C<col>, which are the row
281and column under the mouse cursor.
282
283C<on_key_press> additionally receives the string rxvt-unicode would
284output, if any, in locale-specific encoding.
285
286subwindow.
287
288=back
289
290=head2 Variables in the C<urxvt> Package
291
292=over 4
293
294=item $urxvt::TERM
295
296The current terminal. Whenever a callback/Hook is bein executed, this
297variable stores the current C<urxvt::term> object.
298
174=back 299=back
175 300
176=head2 Functions in the C<urxvt> Package 301=head2 Functions in the C<urxvt> Package
177 302
178=over 4 303=over 4
304
305=item $term = new urxvt [arg...]
306
307Creates a new terminal, very similar as if you had started it with
308C<system $binfile, arg...>. Croaks (and probably outputs an error message)
309if the new instance couldn't be created. Returns C<undef> if the new
310instance didn't initialise perl, and the terminal object otherwise. The
311C<init> and C<start> hooks will be called during the call.
179 312
180=item urxvt::fatal $errormessage 313=item urxvt::fatal $errormessage
181 314
182Fatally aborts execution with the given error message. Avoid at all 315Fatally aborts execution with the given error message. Avoid at all
183costs! The only time this is acceptable is when the terminal process 316costs! The only time this is acceptable is when the terminal process
193correct place, e.g. on stderr of the connecting urxvtc client. 326correct place, e.g. on stderr of the connecting urxvtc client.
194 327
195=item $time = urxvt::NOW 328=item $time = urxvt::NOW
196 329
197Returns the "current time" (as per the event loop). 330Returns the "current time" (as per the event loop).
331
332=back
198 333
199=head2 RENDITION 334=head2 RENDITION
200 335
201Rendition bitsets contain information about colour, font, font styles and 336Rendition bitsets contain information about colour, font, font styles and
202similar information for each screen cell. 337similar information for each screen cell.
251=cut 386=cut
252 387
253package urxvt; 388package urxvt;
254 389
255use strict; 390use strict;
391use Scalar::Util ();
256 392
257our $term; 393our $TERM;
258our @HOOKNAME; 394our @HOOKNAME;
259our $LIBDIR; 395our $LIBDIR;
260 396
261BEGIN { 397BEGIN {
262 urxvt->bootstrap; 398 urxvt->bootstrap;
287 my $name = $HOOKNAME[$htype]; 423 my $name = $HOOKNAME[$htype];
288 424
289 my $ref = $pkg->can ("on_" . lc $name) 425 my $ref = $pkg->can ("on_" . lc $name)
290 or next; 426 or next;
291 427
292 $term->{_hook}[$htype]{$ref*1} = $ref; 428 $TERM->{_hook}[$htype]{$pkg} = $ref;
293 $hook_count[$htype]++ 429 $hook_count[$htype]++
294 or set_should_invoke $htype, 1; 430 or set_should_invoke $htype, 1;
295 } 431 }
296} 432}
297 433
319 455
320 $pkg 456 $pkg
321 } 457 }
322} 458}
323 459
460our $retval; # return value for urxvt
461
324# called by the rxvt core 462# called by the rxvt core
325sub invoke { 463sub invoke {
326 local $term = shift; 464 local $TERM = shift;
327 my $htype = shift; 465 my $htype = shift;
328 466
329 if ($htype == 0) { # INIT 467 if ($htype == 0) { # INIT
330 my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl"); 468 my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
331 469
332 for my $ext (split /:/, $term->resource ("perl_ext")) { 470 for my $ext (map { split /:/, $TERM->resource ("perl_ext_$_") } 1, 2) {
333 my @files = grep -f $_, map "$_/$ext", @dirs; 471 my @files = grep -f $_, map "$_/$ext", @dirs;
334 472
335 if (@files) { 473 if (@files) {
336 register_package script_package $files[0]; 474 register_package script_package $files[0];
337 } else { 475 } else {
338 warn "perl extension '$ext' not found in perl library search path\n"; 476 warn "perl extension '$ext' not found in perl library search path\n";
339 } 477 }
340 } 478 }
479 }
341 480
481 $retval = undef;
482
483 if (my $cb = $TERM->{_hook}[$htype]) {
484 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
485 if $verbosity >= 10;
486
487 keys %$cb;
488
489 while (my ($pkg, $cb) = each %$cb) {
490 $retval = $cb->(
491 $TERM->{_pkg}{$pkg} ||= do {
492 my $proxy = bless { }, urxvt::term::proxy::;
493 Scalar::Util::weaken ($proxy->{term} = $TERM);
494 $proxy
495 },
496 @_,
497 ) and last;
498 }
499 }
500
342 } elsif ($htype == 1) { # DESTROY 501 if ($htype == 1) { # DESTROY
502 # remove hooks if unused
343 if (my $hook = $term->{_hook}) { 503 if (my $hook = $TERM->{_hook}) {
344 for my $htype (0..$#$hook) { 504 for my $htype (0..$#$hook) {
345 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} } 505 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
346 or set_should_invoke $htype, 0; 506 or set_should_invoke $htype, 0;
347 } 507 }
348 } 508 }
509
510 # clear package objects
511 %$_ = () for values %{ $TERM->{_pkg} };
512
513 # clear package
514 %$TERM = ();
349 } 515 }
350 516
351 my $cb = $term->{_hook}[$htype] 517 $retval
352 or return;
353
354 verbose 10, "$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} 518}
363 519
364=back 520sub urxvt::term::proxy::AUTOLOAD {
521 $urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/
522 or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";
523
524 eval qq{
525 sub $urxvt::term::proxy::AUTOLOAD {
526 my \$proxy = shift;
527 \$proxy->{term}->$1 (\@_)
528 }
529 1
530 } or die "FATAL: unable to compile method forwarder: $@";
531
532 goto &$urxvt::term::proxy::AUTOLOAD;
533}
365 534
366=head2 The C<urxvt::term> Class 535=head2 The C<urxvt::term> Class
367 536
368=over 4 537=over 4
538
539=item $term->destroy
540
541Destroy the terminal object (close the window, free resources etc.).
369 542
370=item $value = $term->resource ($name[, $newval]) 543=item $value = $term->resource ($name[, $newval])
371 544
372Returns the current resource value associated with a given name and 545Returns the current resource value associated with a given name and
373optionally sets a new value. Setting values is most useful in the C<init> 546optionally sets a new value. Setting values is most useful in the C<init>
391 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont 564 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
392 borderLess color cursorBlink cursorUnderline cutchars delete_key 565 borderLess color cursorBlink cursorUnderline cutchars delete_key
393 display_name embed ext_bwidth fade font geometry hold iconName 566 display_name embed ext_bwidth fade font geometry hold iconName
394 imFont imLocale inputMethod insecure int_bwidth intensityStyles 567 imFont imLocale inputMethod insecure int_bwidth intensityStyles
395 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier 568 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
396 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext 569 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
397 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd 570 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
398 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating 571 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
399 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput 572 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
400 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle 573 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
401 shade term_name title transparent transparent_all tripleclickwords 574 shade term_name title transparent transparent_all tripleclickwords
407 my ($self, $name) = (shift, shift); 580 my ($self, $name) = (shift, shift);
408 unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0); 581 unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
409 goto &urxvt::term::_resource; 582 goto &urxvt::term::_resource;
410} 583}
411 584
585=item $rend = $term->rstyle ([$new_rstyle])
586
587Return and optionally change the current rendition. Text that is output by
588the terminal application will use this style.
589
590=item ($row, $col) = $term->screen_cur ([$row, $col])
591
592Return the current coordinates of the text cursor position and optionally
593set it (which is usually bad as applications don't expect that).
594
412=item ($row, $col) = $term->selection_mark ([$row, $col]) 595=item ($row, $col) = $term->selection_mark ([$row, $col])
413 596
414=item ($row, $col) = $term->selection_beg ([$row, $col]) 597=item ($row, $col) = $term->selection_beg ([$row, $col])
415 598
416=item ($row, $col) = $term->selection_end ([$row, $col]) 599=item ($row, $col) = $term->selection_end ([$row, $col])
430#=item $term->overlay ($x, $y, $text) 613#=item $term->overlay ($x, $y, $text)
431# 614#
432#Create a simple multi-line overlay box. See the next method for details. 615#Create a simple multi-line overlay box. See the next method for details.
433# 616#
434#=cut 617#=cut
435 618#
436sub urxvt::term::scr_overlay { 619#sub urxvt::term::scr_overlay {
437die;
438 my ($self, $x, $y, $text) = @_; 620# my ($self, $x, $y, $text) = @_;
439 621#
440 my @lines = split /\n/, $text; 622# my @lines = split /\n/, $text;
441 623#
442 my $w = 0; 624# my $w = 0;
443 for (map $self->strwidth ($_), @lines) { 625# for (map $self->strwidth ($_), @lines) {
444 $w = $_ if $w < $_; 626# $w = $_ if $w < $_;
445 } 627# }
446 628#
447 $self->scr_overlay_new ($x, $y, $w, scalar @lines); 629# $self->scr_overlay_new ($x, $y, $w, scalar @lines);
448 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines; 630# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
449} 631#}
450 632
451=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]]) 633=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
452 634
453Create a new (empty) overlay at the given position with the given 635Create a new (empty) overlay at the given position with the given
454width/height. C<$rstyle> defines the initial rendition style 636width/height. C<$rstyle> defines the initial rendition style
461right/bottom side, respectively. 643right/bottom side, respectively.
462 644
463This method returns an urxvt::overlay object. The overlay will be visible 645This method returns an urxvt::overlay object. The overlay will be visible
464as long as the perl object is referenced. 646as long as the perl object is referenced.
465 647
466Currently, the only method on the C<urxvt::overlay> object is C<set>: 648The methods currently supported on C<urxvt::overlay> objects are:
649
650=over 4
467 651
468=item $overlay->set ($x, $y, $text, $rend) 652=item $overlay->set ($x, $y, $text, $rend)
469 653
470Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts 654Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
471text in rxvt-unicode's special encoding and an array of rendition values 655text in rxvt-unicode's special encoding and an array of rendition values
472at a specific position inside the overlay. 656at a specific position inside the overlay.
473 657
658=item $overlay->hide
659
660If visible, hide the overlay, but do not destroy it.
661
662=item $overlay->show
663
664If hidden, display the overlay again.
665
666=back
667
474=item $cellwidth = $term->strwidth $string 668=item $cellwidth = $term->strwidth ($string)
475 669
476Returns the number of screen-cells this string would need. Correctly 670Returns the number of screen-cells this string would need. Correctly
477accounts for wide and combining characters. 671accounts for wide and combining characters.
478 672
479=item $octets = $term->locale_encode $string 673=item $octets = $term->locale_encode ($string)
480 674
481Convert the given text string into the corresponding locale encoding. 675Convert the given text string into the corresponding locale encoding.
482 676
483=item $string = $term->locale_decode $octets 677=item $string = $term->locale_decode ($octets)
484 678
485Convert the given locale-encoded octets into a perl string. 679Convert the given locale-encoded octets into a perl string.
680
681=item $term->scr_add_lines ($string)
682
683Write the given text string to the screen, as if output by the application
684running inside the terminal. It may not contain command sequences (escape
685codes), but is free to use line feeds, carriage returns and tabs. The
686string is a normal text string, not in locale-dependent encoding.
687
688Normally its not a good idea to use this function, as programs might be
689confused by changes in cursor position or scrolling. Its useful inside a
690C<on_add_lines> hook, though.
691
692=item $term->cmd_parse ($octets)
693
694Similar to C<scr_add_lines>, but the argument must be in the
695locale-specific encoding of the terminal and can contain command sequences
696(escape codes) that will be interpreted.
486 697
487=item $term->tt_write ($octets) 698=item $term->tt_write ($octets)
488 699
489Write the octets given in C<$data> to the tty (i.e. as program input). To 700Write the octets given in C<$data> to the tty (i.e. as program input). To
490pass characters instead of octets, you should convert your strings first 701pass characters instead of octets, you should convert your strings first
491to the locale-specific encoding using C<< $term->locale_encode >>. 702to the locale-specific encoding using C<< $term->locale_encode >>.
492 703
704=item $windowid = $term->parent
705
706Return the window id of the toplevel window.
707
708=item $windowid = $term->vt
709
710Return the window id of the terminal window.
711
712=item $window_width = $term->width
713
714=item $window_height = $term->height
715
716=item $font_width = $term->fwidth
717
718=item $font_height = $term->fheight
719
720=item $font_ascent = $term->fbase
721
493=item $nrow = $term->nrow 722=item $terminal_rows = $term->nrow
494 723
495=item $ncol = $term->ncol 724=item $terminal_columns = $term->ncol
496 725
497Return the number of rows/columns of the terminal window (i.e. as 726=item $has_focus = $term->focus
498specified by C<-geometry>, excluding any scrollback).
499 727
500=item $nsaved = $term->nsaved 728=item $is_mapped = $term->mapped
501 729
502Returns the number of lines in the scrollback buffer. 730=item $max_scrollback = $term->saveLines
731
732=item $nrow_plus_saveLines = $term->total_rows
733
734=item $lines_in_scrollback = $term->nsaved
735
736Return various integers describing terminal characteristics.
503 737
504=item $view_start = $term->view_start ([$newvalue]) 738=item $view_start = $term->view_start ([$newvalue])
505 739
506Returns the negative row number of the topmost line. Minimum value is 740Returns the negative row number of the topmost line. Minimum value is
507C<0>, which displays the normal terminal contents. Larger values scroll 741C<0>, which displays the normal terminal contents. Larger values scroll
518=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]]) 752=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
519 753
520Returns the text of the entire row with number C<$row_number>. Row C<0> 754Returns the text of the entire row with number C<$row_number>. Row C<0>
521is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost 755is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
522terminal line. The scrollback buffer starts at line C<-1> and extends to 756terminal line. The scrollback buffer starts at line C<-1> and extends to
523line C<< -$term->nsaved >>. 757line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
758is requested.
524 759
525If C<$new_text> is specified, it will replace characters in the current 760If C<$new_text> is specified, it will replace characters in the current
526line, starting at column C<$start_col> (default C<0>), which is useful 761line, starting at column C<$start_col> (default C<0>), which is useful
527to replace only parts of a line. The font index in the rendition will 762to replace only parts of a line. The font index in the rendition will
528automatically be updated. 763automatically be updated.
550 785
551See the section on RENDITION, above. 786See the section on RENDITION, above.
552 787
553=item $length = $term->ROW_l ($row_number[, $new_length]) 788=item $length = $term->ROW_l ($row_number[, $new_length])
554 789
555Returns the number of screen cells that are in use ("the line length"). If 790Returns the number of screen cells that are in use ("the line
556it is C<-1>, then the line is part of a multiple-row logical "line", which 791length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
557means all characters are in use and it is continued on the next row. 792line is joined with the following one.
558 793
794=item $bool = $term->is_longer ($row_number)
795
796Returns true if the row is part of a multiple-row logical "line" (i.e.
797joined with the following row), which means all characters are in use
798and it is continued on the next row (and possibly a continuation of the
799previous row(s)).
800
801=item $line = $term->line ($row_number)
802
803Create and return a new C<urxvt::line> object that stores information
804about the logical line that row C<$row_number> is part of. It supports the
805following methods:
806
807=over 4
808
809=item $text = $line->t ([$new_text])
810
811Returns or replaces the full text of the line, similar to C<ROW_t>
812
813=item $rend = $line->r ([$new_rend])
814
815Returns or replaces the full rendition array of the line, similar to C<ROW_r>
816
817=item $length = $line->l
818
819Returns the length of the line in cells, similar to C<ROW_l>.
820
821=item $rownum = $line->beg
822
823=item $rownum = $line->end
824
825Return the row number of the first/last row of the line, respectively.
826
827=item $offset = $line->offset_of ($row, $col)
828
829Returns the character offset of the given row|col pair within the logical
830line.
831
832=item ($row, $col) = $line->coord_of ($offset)
833
834Translates a string offset into terminal coordinates again.
835
836=back
837
838=cut
839
840sub urxvt::term::line {
841 my ($self, $row) = @_;
842
843 my $maxrow = $self->nrow - 1;
844
845 my ($beg, $end) = ($row, $row);
846
847 --$beg while $self->ROW_is_longer ($beg - 1);
848 ++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
849
850 bless {
851 term => $self,
852 beg => $beg,
853 end => $end,
854 ncol => $self->ncol,
855 len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
856 }, urxvt::line::
857}
858
859sub urxvt::line::t {
860 my ($self) = @_;
861
862 if (@_ > 1)
863 {
864 $self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
865 for $self->{beg} .. $self->{end};
866 }
867
868 defined wantarray &&
869 substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
870 0, $self->{len}
871}
872
873sub urxvt::line::r {
874 my ($self) = @_;
875
876 if (@_ > 1)
877 {
878 $self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
879 for $self->{beg} .. $self->{end};
880 }
881
882 if (defined wantarray) {
883 my $rend = [
884 map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
885 ];
886 $#$rend = $self->{len} - 1;
887 return $rend;
888 }
889
890 ()
891}
892
893sub urxvt::line::beg { $_[0]{beg} }
894sub urxvt::line::end { $_[0]{end} }
895sub urxvt::line::l { $_[0]{len} }
896
897sub urxvt::line::offset_of {
898 my ($self, $row, $col) = @_;
899
900 ($row - $self->{beg}) * $self->{ncol} + $col
901}
902
903sub urxvt::line::coord_of {
904 my ($self, $offset) = @_;
905
906 use integer;
907
908 (
909 $offset / $self->{ncol} + $self->{beg},
910 $offset % $self->{ncol}
911 )
912}
913
914=item ($row, $col) = $line->coord_of ($offset)
559=item $text = $term->special_encode $string 915=item $text = $term->special_encode $string
560 916
561Converts a perl string into the special encoding used by rxvt-unicode, 917Converts a perl string into the special encoding used by rxvt-unicode,
562where one character corresponds to one screen cell. See 918where one character corresponds to one screen cell. See
563C<< $term->ROW_t >> for details. 919C<< $term->ROW_t >> for details.
677This variable controls the verbosity level of the perl extension. Higher 1033This variable controls the verbosity level of the perl extension. Higher
678numbers indicate more verbose output. 1034numbers indicate more verbose output.
679 1035
680=over 4 1036=over 4
681 1037
682=item 0 - only fatal messages 1038=item =0 - only fatal messages
683 1039
684=item 3 - script loading and management 1040=item =3 - script loading and management
685 1041
686=item 10 - all events received 1042=item =10 - all events received
687 1043
688=back 1044=back
689 1045
690=head1 AUTHOR 1046=head1 AUTHOR
691 1047

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