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Revision 1.19 by root, Tue Jan 3 02:42:17 2006 UTC vs.
Revision 1.23 by root, Tue Jan 3 19:42:53 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 etxension tries to be more intelligent when the user
45extends selections (double-click).
46
47It also offers the following bindable event:
45 48
46=over 4 49=over 4
47 50
48=item rot13 51=item rot13
49 52
52 URxvt.keysym.C-M-r: perl:selection:rot13 55 URxvt.keysym.C-M-r: perl:selection:rot13
53 56
54=back 57=back
55 58
56=item digital-clock 59=item digital-clock
60
61Displays a digital clock using the built-in overlay.
62
63=item example-refresh-hooks
57 64
58Displays a very simple digital clock in the upper right corner of the 65Displays a very simple digital clock in the upper right corner of the
59window. Illustrates overwriting the refresh callbacks to create your own 66window. Illustrates overwriting the refresh callbacks to create your own
60overlays or changes. 67overlays or changes.
61 68
62=item simple-overlay-clock
63
64Displays a digital clock using the built-in overlay (colourful, useless).
65
66=back 69=back
67 70
68=head2 General API Considerations 71=head2 General API Considerations
69 72
70All objects (such as terminals, time watchers etc.) are typical 73All objects (such as terminals, time watchers etc.) are typical
71reference-to-hash objects. The hash can be used to store anything you 74reference-to-hash objects. The hash can be used to store anything you
72like. All members starting with an underscore (such as C<_ptr> or 75like. All members starting with an underscore (such as C<_ptr> or
73C<_hook>) are reserved for internal uses and must not be accessed or 76C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
74modified). 77modified).
75 78
76When objects are destroyed on the C++ side, the perl object hashes are 79When 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 80emptied, 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 81the like inside the terminal object so they get destroyed as soon as the
79terminal is destroyed. 82terminal is destroyed.
80 83
81=head2 Hooks 84=head2 Hooks
82 85
83The following subroutines can be declared in loaded scripts, and will be called 86The following subroutines can be declared in loaded scripts, and will be
84whenever the relevant event happens. 87called whenever the relevant event happens.
88
89The first argument passed to them is an object private to each terminal
90and extension package. You can call all C<urxvt::term> methods on it, but
91its not a real C<urxvt::term> object. Instead, the real C<urxvt::term>
92object that is shared between all packages is stored in the C<term>
93member.
85 94
86All of them must return a boolean value. If it is true, then the event 95All 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, 96counts 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. 97and the relevant action might not be carried out by the C++ code.
89 98
121Called whenever a selection has been copied, but before the selection is 130Called whenever a selection has been copied, but before the selection is
122requested from the server. The selection text can be queried and changed 131requested from the server. The selection text can be queried and changed
123by calling C<< $term->selection >>. 132by calling C<< $term->selection >>.
124 133
125Returning a true value aborts selection grabbing. It will still be hilighted. 134Returning a true value aborts selection grabbing. It will still be hilighted.
135
136=item on_sel_extend $term
137
138Called whenever the user tries to extend the selection (e.g. with a double
139click) and is either supposed to return false (normal operation), or
140should extend the selection itelf and return true to suppress the built-in
141processing.
142
143See the F<selection> example extension.
126 144
127=item on_focus_in $term 145=item on_focus_in $term
128 146
129Called whenever the window gets the keyboard focus, before urxvt does 147Called whenever the window gets the keyboard focus, before urxvt does
130focus in processing. 148focus in processing.
171C<perl:string> action bound to it (see description of the B<keysym> 189C<perl:string> action bound to it (see description of the B<keysym>
172resource in the @@RXVT_NAME@@(1) manpage). 190resource in the @@RXVT_NAME@@(1) manpage).
173 191
174=back 192=back
175 193
194=head2 Variables in the C<urxvt> Package
195
196=over 4
197
198=item $urxvt::TERM
199
200The current terminal. Whenever a callback/Hook is bein executed, this
201variable stores the current C<urxvt::term> object.
202
203=back
204
176=head2 Functions in the C<urxvt> Package 205=head2 Functions in the C<urxvt> Package
177 206
178=over 4 207=over 4
179 208
180=item urxvt::fatal $errormessage 209=item urxvt::fatal $errormessage
193correct place, e.g. on stderr of the connecting urxvtc client. 222correct place, e.g. on stderr of the connecting urxvtc client.
194 223
195=item $time = urxvt::NOW 224=item $time = urxvt::NOW
196 225
197Returns the "current time" (as per the event loop). 226Returns the "current time" (as per the event loop).
227
228=back
198 229
199=head2 RENDITION 230=head2 RENDITION
200 231
201Rendition bitsets contain information about colour, font, font styles and 232Rendition bitsets contain information about colour, font, font styles and
202similar information for each screen cell. 233similar information for each screen cell.
251=cut 282=cut
252 283
253package urxvt; 284package urxvt;
254 285
255use strict; 286use strict;
287use Scalar::Util ();
256 288
257our $term; 289our $TERM;
258our @HOOKNAME; 290our @HOOKNAME;
259our $LIBDIR; 291our $LIBDIR;
260 292
261BEGIN { 293BEGIN {
262 urxvt->bootstrap; 294 urxvt->bootstrap;
287 my $name = $HOOKNAME[$htype]; 319 my $name = $HOOKNAME[$htype];
288 320
289 my $ref = $pkg->can ("on_" . lc $name) 321 my $ref = $pkg->can ("on_" . lc $name)
290 or next; 322 or next;
291 323
292 $term->{_hook}[$htype]{$ref*1} = $ref; 324 $TERM->{_hook}[$htype]{$pkg} = $ref;
293 $hook_count[$htype]++ 325 $hook_count[$htype]++
294 or set_should_invoke $htype, 1; 326 or set_should_invoke $htype, 1;
295 } 327 }
296} 328}
297 329
321 } 353 }
322} 354}
323 355
324# called by the rxvt core 356# called by the rxvt core
325sub invoke { 357sub invoke {
326 local $term = shift; 358 local $TERM = shift;
327 my $htype = shift; 359 my $htype = shift;
328 360
329 if ($htype == 0) { # INIT 361 if ($htype == 0) { # INIT
330 my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl"); 362 my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
331 363
332 for my $ext (split /:/, $term->resource ("perl_ext")) { 364 for my $ext (split /:/, $TERM->resource ("perl_ext")) {
333 my @files = grep -f $_, map "$_/$ext", @dirs; 365 my @files = grep -f $_, map "$_/$ext", @dirs;
334 366
335 if (@files) { 367 if (@files) {
336 register_package script_package $files[0]; 368 register_package script_package $files[0];
337 } else { 369 } else {
338 warn "perl extension '$ext' not found in perl library search path\n"; 370 warn "perl extension '$ext' not found in perl library search path\n";
339 } 371 }
340 } 372 }
341 373
342 } elsif ($htype == 1) { # DESTROY 374 } elsif ($htype == 1) { # DESTROY
343 if (my $hook = $term->{_hook}) { 375 if (my $hook = $TERM->{_hook}) {
344 for my $htype (0..$#$hook) { 376 for my $htype (0..$#$hook) {
345 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} } 377 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
346 or set_should_invoke $htype, 0; 378 or set_should_invoke $htype, 0;
347 } 379 }
348 } 380 }
349 } 381 }
350 382
351 my $cb = $term->{_hook}[$htype] 383 my $cb = $TERM->{_hook}[$htype]
352 or return; 384 or return;
353 385
354 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")" 386 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
355 if $verbosity >= 10; 387 if $verbosity >= 10;
356 388
357 while (my ($k, $v) = each %$cb) { 389 while (my ($pkg, $cb) = each %$cb) {
358 return 1 if $v->($term, @_); 390 return 1
391 if $cb->(
392 $TERM->{$pkg} ||= do {
393 my $proxy = bless { }, urxvt::term::proxy::;
394 Scalar::Util::weaken ($proxy->{term} = $TERM);
395 $proxy
396 },
397 @_,
398 );
359 } 399 }
360 400
361 0 401 0
362} 402}
363 403
364=back 404sub urxvt::term::proxy::AUTOLOAD {
405 $urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/
406 or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";
407
408 eval qq{
409 sub $urxvt::term::proxy::AUTOLOAD {
410 unshift \@_, shift->{term};
411 goto &urxvt::term::$1;
412 }
413 1
414 } or die "FATAL: unable to compile method forwarder: $@";
415
416 goto &$urxvt::term::proxy::AUTOLOAD;
417}
365 418
366=head2 The C<urxvt::term> Class 419=head2 The C<urxvt::term> Class
367 420
368=over 4 421=over 4
369 422
425 478
426=item $oldtext = $term->selection ([$newtext]) 479=item $oldtext = $term->selection ([$newtext])
427 480
428Return the current selection text and optionally replace it by C<$newtext>. 481Return the current selection text and optionally replace it by C<$newtext>.
429 482
430=item $term->scr_overlay ($x, $y, $text) 483#=item $term->overlay ($x, $y, $text)
431 484#
432Create a simple multi-line overlay box. See the next method for details. 485#Create a simple multi-line overlay box. See the next method for details.
433 486#
434=cut 487#=cut
435 488
436sub urxvt::term::scr_overlay { 489sub urxvt::term::scr_overlay {
490die;
437 my ($self, $x, $y, $text) = @_; 491 my ($self, $x, $y, $text) = @_;
438 492
439 my @lines = split /\n/, $text; 493 my @lines = split /\n/, $text;
440 494
441 my $w = 0; 495 my $w = 0;
445 499
446 $self->scr_overlay_new ($x, $y, $w, scalar @lines); 500 $self->scr_overlay_new ($x, $y, $w, scalar @lines);
447 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines; 501 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
448} 502}
449 503
450=item $term->scr_overlay_new ($x, $y, $width, $height) 504=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
451 505
452Create a new (empty) overlay at the given position with the given 506Create a new (empty) overlay at the given position with the given
453width/height. A border will be put around the box. If either C<$x> or 507width/height. C<$rstyle> defines the initial rendition style
454C<$y> is negative, then this is counted from the right/bottom side, 508(default: C<OVERLAY_RSTYLE>).
455respectively.
456 509
457=item $term->scr_overlay_off 510If C<$border> is C<2> (default), then a decorative border will be put
511around the box.
458 512
459Switch the overlay off again. 513If either C<$x> or C<$y> is negative, then this is counted from the
514right/bottom side, respectively.
460 515
461=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE) 516This method returns an urxvt::overlay object. The overlay will be visible
517as long as the perl object is referenced.
462 518
463Put a single character (specified numerically) at the given overlay 519The methods currently supported on C<urxvt::overlay> objects are:
464position.
465 520
521=over 4
522
466=item $term->scr_overlay_set ($x, $y, $text) 523=item $overlay->set ($x, $y, $text, $rend)
467 524
468Write a string at the given position into the overlay. 525Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
526text in rxvt-unicode's special encoding and an array of rendition values
527at a specific position inside the overlay.
528
529=item $overlay->hide
530
531If visible, hide the overlay, but do not destroy it.
532
533=item $overlay->show
534
535If hidden, display the overlay again.
536
537=back
469 538
470=item $cellwidth = $term->strwidth $string 539=item $cellwidth = $term->strwidth $string
471 540
472Returns the number of screen-cells this string would need. Correctly 541Returns the number of screen-cells this string would need. Correctly
473accounts for wide and combining characters. 542accounts for wide and combining characters.
568=head2 The C<urxvt::timer> Class 637=head2 The C<urxvt::timer> Class
569 638
570This class implements timer watchers/events. Time is represented as a 639This class implements timer watchers/events. Time is represented as a
571fractional number of seconds since the epoch. Example: 640fractional number of seconds since the epoch. Example:
572 641
573 # create a digital clock display in upper right corner 642 $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
574 $term->{timer} = urxvt::timer 643 $term->{timer} = urxvt::timer
575 ->new 644 ->new
576 ->start (urxvt::NOW) 645 ->interval (1)
577 ->cb (sub { 646 ->cb (sub {
578 my ($timer) = @_;
579 my $time = $timer->at;
580 $timer->start ($time + 1);
581 $self->scr_overlay (-1, 0, 647 $term->{overlay}->set (0, 0,
582 POSIX::strftime "%H:%M:%S", localtime $time); 648 sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
583 }); 649 });
584 650
585=over 4 651=over 4
586 652
587=item $timer = new urxvt::timer 653=item $timer = new urxvt::timer
588 654
589Create a new timer object in stopped state. 655Create a new timer object in started state. It is scheduled to fire
656immediately.
590 657
591=item $timer = $timer->cb (sub { my ($timer) = @_; ... }) 658=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
592 659
593Set the callback to be called when the timer triggers. 660Set the callback to be called when the timer triggers.
594 661
597Return the time this watcher will fire next. 664Return the time this watcher will fire next.
598 665
599=item $timer = $timer->set ($tstamp) 666=item $timer = $timer->set ($tstamp)
600 667
601Set the time the event is generated to $tstamp. 668Set the time the event is generated to $tstamp.
669
670=item $timer = $timer->interval ($interval)
671
672Normally (and when C<$interval> is C<0>), the timer will automatically
673stop after it has fired once. If C<$interval> is non-zero, then the timer
674is automatically rescheduled at the given intervals.
602 675
603=item $timer = $timer->start 676=item $timer = $timer->start
604 677
605Start the timer. 678Start the timer.
606 679

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