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Revision 1.10 by root, Mon Jan 2 20:47:52 2006 UTC vs.
Revision 1.50 by root, Sun Jan 8 00:11:38 2006 UTC

1=encoding utf8
2
1=head1 NAME 3=head1 NAME
2 4
3rxvtperl - rxvt-unicode's embedded perl interpreter 5@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter
4 6
5=head1 SYNOPSIS 7=head1 SYNOPSIS
6 8
7 # create a file grab_test in $HOME: 9 # create a file grab_test in $HOME:
8 10
15 17
16 @@RXVT_NAME@@ --perl-lib $HOME -pe grab_test 18 @@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
17 19
18=head1 DESCRIPTION 20=head1 DESCRIPTION
19 21
20Everytime a terminal object gets created, scripts specified via the 22Everytime a terminal object gets created, extension scripts specified via
21C<perl> resource are loaded and associated with it. 23the C<perl> resource are loaded and associated with it.
22 24
23Scripts are compiled in a 'use strict' and 'use utf8' environment, and 25Scripts are compiled in a 'use strict' and 'use utf8' environment, and
24thus must be encoded as UTF-8. 26thus must be encoded as UTF-8.
25 27
26Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where 28Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
27scripts will be shared (But not enabled) for all terminals. 29scripts will be shared (but not enabled) for all terminals.
30
31=head2 Prepackaged Extensions
32
33This section describes the extensiosn delivered with this version. You can
34find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
35
36You can activate them like this:
37
38 @@RXVT_NAME@@ -pe <extensionname>
39
40=over 4
41
42=item selection
43
44Intelligent selection. This extension tries to be more intelligent when
45the user extends selections (double-click). Right now, it tries to select
46urls and complete shell-quoted arguments, which is very convenient, too,
47if your F<ls> supports C<--quoting-style=shell>.
48
49It also offers the following bindable event:
50
51=over 4
52
53=item rot13
54
55Rot-13 the selection when activated. Used via keyboard trigger:
56
57 URxvt.keysym.C-M-r: perl:selection:rot13
58
59=back
60
61=item digital-clock
62
63Displays a digital clock using the built-in overlay.
64
65=item 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
76
77Displays a very simple digital clock in the upper right corner of the
78window. Illustrates overwriting the refresh callbacks to create your own
79overlays or changes.
80
81=back
28 82
29=head2 General API Considerations 83=head2 General API Considerations
30 84
31All objects (such as terminals, time watchers etc.) are typical 85All objects (such as terminals, time watchers etc.) are typical
32reference-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
33like. All members starting with an underscore (such as C<_ptr> or 87like. All members starting with an underscore (such as C<_ptr> or
34C<_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
35modified). 89modified).
36 90
37When 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
38emptied, 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
39the 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
40terminal is destroyed. 94terminal is destroyed.
41 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
42=head2 Hooks 119=head2 Hooks
43 120
44The following subroutines can be declared in loaded scripts, and will be called 121The following subroutines can be declared in extension files, and will be
45whenever 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. It is, however, blessed intot he package of the extension script,
129so for all practical purposes you can treat an extension script as a class.
46 130
47All 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
48counts 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,
49and 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.
50 134
53=over 4 137=over 4
54 138
55=item on_init $term 139=item on_init $term
56 140
57Called after a new terminal object has been initialized, but before 141Called after a new terminal object has been initialized, but before
58windows 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.
59 146
60=item on_reset $term 147=item on_reset $term
61 148
62Called 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
63control 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
83requested from the server. The selection text can be queried and changed 170requested from the server. The selection text can be queried and changed
84by calling C<< $term->selection >>. 171by calling C<< $term->selection >>.
85 172
86Returning a true value aborts selection grabbing. It will still be hilighted. 173Returning a true value aborts selection grabbing. It will still be hilighted.
87 174
88=item on_focus_in $term 175=item on_sel_extend $term
89 176
90Called whenever the window gets the keyboard focus, before urxvt does 177Called whenever the user tries to extend the selection (e.g. with a double
91focus in processing. 178click) and is either supposed to return false (normal operation), or
92 179should extend the selection itelf and return true to suppress the built-in
93=item on_focus_out $term
94
95Called wheneever the window loses keyboard focus, before urxvt does focus
96out processing. 180processing.
181
182See the F<selection> example extension.
97 183
98=item on_view_change $term, $offset 184=item on_view_change $term, $offset
99 185
100Called whenever the view offset changes, i..e the user or program 186Called whenever the view offset changes, i..e the user or program
101scrolls. Offset C<0> means display the normal terminal, positive values 187scrolls. Offset C<0> means display the normal terminal, positive values
112number of lines that will be in the scrollback buffer. 198number of lines that will be in the scrollback buffer.
113 199
114=item on_tty_activity $term *NYI* 200=item on_tty_activity $term *NYI*
115 201
116Called whenever the program(s) running in the urxvt window send output. 202Called whenever the program(s) running in the urxvt window send output.
203
204=item on_osc_seq $term, $string
205
206Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
207operating system command) is processed. Cursor position and other state
208information is up-to-date when this happens. For interoperability, the
209string should start with the extension name and a colon, to distinguish
210it from commands for other extensions, and this might be enforced in the
211future.
212
213Be careful not ever to trust (in a security sense) the data you receive,
214as its source can not easily be controleld (e-mail content, messages from
215other users on the same system etc.).
216
217=item on_add_lines $term, $string
218
219Called whenever text is about to be output, with the text as argument. You
220can filter/change and output the text yourself by returning a true value
221and calling C<< $term->scr_add_lines >> yourself. Please note that this
222might be very slow, however, as your hook is called for B<all> text being
223output.
224
225=item on_line_update $term, $row
226
227Called whenever a line was updated or changed. Can be used to filter
228screen output (e.g. underline urls or other useless stuff). Only lines
229that are being shown will be filtered, and, due to performance reasons,
230not always immediately.
231
232The row number is always the topmost row of the line if the line spans
233multiple rows.
234
235Please note that, if you change the line, then the hook might get called
236later with the already-modified line (e.g. if unrelated parts change), so
237you cannot just toggle rendition bits, but only set them.
117 238
118=item on_refresh_begin $term 239=item on_refresh_begin $term
119 240
120Called just before the screen gets redrawn. Can be used for overlay 241Called just before the screen gets redrawn. Can be used for overlay
121or similar effects by modify terminal contents in refresh_begin, and 242or similar effects by modify terminal contents in refresh_begin, and
124 245
125=item on_refresh_end $term 246=item on_refresh_end $term
126 247
127Called just after the screen gets redrawn. See C<on_refresh_begin>. 248Called just after the screen gets redrawn. See C<on_refresh_begin>.
128 249
250=item on_keyboard_command $term, $string
251
252Called whenever the user presses a key combination that has a
253C<perl:string> action bound to it (see description of the B<keysym>
254resource in the @@RXVT_NAME@@(1) manpage).
255
256=item on_focus_in $term
257
258Called whenever the window gets the keyboard focus, before rxvt-unicode
259does focus in processing.
260
261=item on_focus_out $term
262
263Called wheneever the window loses keyboard focus, before rxvt-unicode does
264focus out processing.
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
276=item on_map_notify $term, $event
277
278=item on_unmap_notify $term, $event
279
280Called whenever the corresponding X event is received for the terminal If
281the hook returns true, then the even will be ignored by rxvt-unicode.
282
283The event is a hash with most values as named by Xlib (see the XEvent
284manpage), with the additional members C<row> and C<col>, which are the row
285and column under the mouse cursor.
286
287C<on_key_press> additionally receives the string rxvt-unicode would
288output, if any, in locale-specific encoding.
289
290subwindow.
291
292=back
293
294=head2 Variables in the C<urxvt> Package
295
296=over 4
297
298=item $urxvt::TERM
299
300The current terminal. This variable stores the current C<urxvt::term>
301object, whenever a callback/hook is executing.
302
129=back 303=back
130 304
131=head2 Functions in the C<urxvt> Package 305=head2 Functions in the C<urxvt> Package
132 306
133=over 4 307=over 4
308
309=item $term = new urxvt [arg...]
310
311Creates a new terminal, very similar as if you had started it with
312C<system $binfile, arg...>. Croaks (and probably outputs an error message)
313if the new instance couldn't be created. Returns C<undef> if the new
314instance didn't initialise perl, and the terminal object otherwise. The
315C<init> and C<start> hooks will be called during the call.
134 316
135=item urxvt::fatal $errormessage 317=item urxvt::fatal $errormessage
136 318
137Fatally aborts execution with the given error message. Avoid at all 319Fatally aborts execution with the given error message. Avoid at all
138costs! The only time this is acceptable is when the terminal process 320costs! The only time this is acceptable is when the terminal process
149 331
150=item $time = urxvt::NOW 332=item $time = urxvt::NOW
151 333
152Returns the "current time" (as per the event loop). 334Returns the "current time" (as per the event loop).
153 335
336=item urxvt::CurrentTime
337
338=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
339Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
340Button4Mask, Button5Mask, AnyModifier
341
342Various constants for use in X events.
343
344=back
345
346=head2 RENDITION
347
348Rendition bitsets contain information about colour, font, font styles and
349similar information for each screen cell.
350
351The following "macros" deal with changes in rendition sets. You should
352never just create a bitset, you should always modify an existing one,
353as they contain important information required for correct operation of
354rxvt-unicode.
355
356=over 4
357
358=item $rend = urxvt::DEFAULT_RSTYLE
359
360Returns the default rendition, as used when the terminal is starting up or
361being reset. Useful as a base to start when creating renditions.
362
363=item $rend = urxvt::OVERLAY_RSTYLE
364
365Return the rendition mask used for overlays by default.
366
367=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
368
369Return the bit that enabled bold, italic, blink, reverse-video and
370underline, respectively. To enable such a style, just logically OR it into
371the bitset.
372
373=item $foreground = urxvt::GET_BASEFG $rend
374
375=item $background = urxvt::GET_BASEBG $rend
376
377Return the foreground/background colour index, respectively.
378
379=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)
380
381=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)
382
383Replace the foreground/background colour in the rendition mask with the
384specified one.
385
386=item $value = urxvt::GET_CUSTOM ($rend)
387
388Return the "custom" value: Every rendition has 5 bits for use by
389extensions. They can be set and changed as you like and are initially
390zero.
391
392=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)
393
394Change the custom value.
395
396=back
397
154=cut 398=cut
155 399
156package urxvt; 400package urxvt;
157 401
402use utf8;
158use strict; 403use strict;
404use Scalar::Util ();
405use List::Util ();
159 406
160our $term; 407our $TERM;
161our @HOOKNAME; 408our @HOOKNAME;
409our %OPTION;
162our $LIBDIR; 410our $LIBDIR;
163 411
164BEGIN { 412BEGIN {
165 urxvt->bootstrap; 413 urxvt->bootstrap;
166 414
190 my $name = $HOOKNAME[$htype]; 438 my $name = $HOOKNAME[$htype];
191 439
192 my $ref = $pkg->can ("on_" . lc $name) 440 my $ref = $pkg->can ("on_" . lc $name)
193 or next; 441 or next;
194 442
195 $term->{_hook}[$htype]{$ref*1} = $ref; 443 $TERM->{_hook}[$htype]{$pkg} = $ref;
196 $hook_count[$htype]++ 444 $hook_count[$htype]++
197 or set_should_invoke $htype, 1; 445 or set_should_invoke $htype, 1;
198 } 446 }
199} 447}
200 448
201my $script_pkg = "script0000"; 449my $extension_pkg = "extension0000";
202my %script_pkg; 450my %extension_pkg;
203 451
204# load a single script into its own package, once only 452# load a single script into its own package, once only
205sub script_package($) { 453sub extension_package($) {
206 my ($path) = @_; 454 my ($path) = @_;
207 455
208 $script_pkg{$path} ||= do { 456 $extension_pkg{$path} ||= do {
209 my $pkg = "urxvt::" . ($script_pkg++); 457 my $pkg = "urxvt::" . ($extension_pkg++);
210 458
211 verbose 3, "loading script '$path' into package '$pkg'"; 459 verbose 3, "loading extension '$path' into package '$pkg'";
212 460
213 open my $fh, "<:raw", $path 461 open my $fh, "<:raw", $path
214 or die "$path: $!"; 462 or die "$path: $!";
215 463
216 my $source = "package $pkg; use strict; use utf8;\n" 464 my $source = "package $pkg; use strict; use utf8;\n"
465 . "use base urxvt::term::proxy::;\n"
217 . "#line 1 \"$path\"\n{\n" 466 . "#line 1 \"$path\"\n{\n"
218 . (do { local $/; <$fh> }) 467 . (do { local $/; <$fh> })
219 . "\n};\n1"; 468 . "\n};\n1";
220 469
221 eval $source or die "$path: $@"; 470 eval $source or die "$path: $@";
222 471
223 $pkg 472 $pkg
224 } 473 }
225} 474}
226 475
476our $retval; # return value for urxvt
477
227# called by the rxvt core 478# called by the rxvt core
228sub invoke { 479sub invoke {
229 local $term = shift; 480 local $TERM = shift;
230 my $htype = shift; 481 my $htype = shift;
231 482
232 if ($htype == 0) { # INIT 483 if ($htype == 0) { # INIT
233 my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl"); 484 my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
485
486 my %want_ext;
234 487
235 for my $ext (split /:/, $term->resource ("perl_ext")) { 488 for (map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
489 if ($_ eq "default") {
490 $want_ext{$_}++ for qw(selection);
491 } elsif (/-(.*)/) {
492 delete $want_ext{$1};
493 } else {
494 $want_ext{$_}++;
495 }
496 }
497
498 for my $ext (keys %want_ext) {
236 my @files = grep -f $_, map "$_/$ext", @dirs; 499 my @files = grep -f $_, map "$_/$ext", @dirs;
237 500
238 if (@files) { 501 if (@files) {
239 register_package script_package $files[0]; 502 register_package extension_package $files[0];
240 } else { 503 } else {
241 warn "perl extension '$ext' not found in perl library search path\n"; 504 warn "perl extension '$ext' not found in perl library search path\n";
242 } 505 }
243 } 506 }
507 }
244 508
509 $retval = undef;
510
511 if (my $cb = $TERM->{_hook}[$htype]) {
512 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
513 if $verbosity >= 10;
514
515 keys %$cb;
516
517 while (my ($pkg, $cb) = each %$cb) {
518 eval {
519 $retval = $cb->(
520 $TERM->{_pkg}{$pkg} ||= do {
521 my $proxy = bless { }, $pkg;
522 Scalar::Util::weaken ($proxy->{term} = $TERM);
523 $proxy
524 },
525 @_,
526 ) and last;
527 };
528 warn $@ if $@;#d#
529 }
530 }
531
245 } elsif ($htype == 1) { # DESTROY 532 if ($htype == 1) { # DESTROY
533 # remove hooks if unused
246 if (my $hook = $term->{_hook}) { 534 if (my $hook = $TERM->{_hook}) {
247 for my $htype (0..$#$hook) { 535 for my $htype (0..$#$hook) {
248 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} } 536 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
249 or set_should_invoke $htype, 0; 537 or set_should_invoke $htype, 0;
250 } 538 }
251 } 539 }
540
541 # clear package objects
542 %$_ = () for values %{ $TERM->{_pkg} };
543
544 # clear package
545 %$TERM = ();
252 } 546 }
253 547
254 my $cb = $term->{_hook}[$htype] 548 $retval
255 or return;
256
257 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"
258 if $verbosity >= 10;
259
260 while (my ($k, $v) = each %$cb) {
261 return 1 if $v->($term, @_);
262 }
263
264 0
265} 549}
266 550
267=back 551sub urxvt::term::proxy::AUTOLOAD {
552 $urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/
553 or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";
554
555 eval qq{
556 sub $urxvt::term::proxy::AUTOLOAD {
557 my \$proxy = shift;
558 \$proxy->{term}->$1 (\@_)
559 }
560 1
561 } or die "FATAL: unable to compile method forwarder: $@";
562
563 goto &$urxvt::term::proxy::AUTOLOAD;
564}
565
566sub urxvt::destroy_hook::DESTROY {
567 ${$_[0]}->();
568}
569
570sub urxvt::destroy_hook(&) {
571 bless \shift, urxvt::destroy_hook::
572}
268 573
269=head2 The C<urxvt::term> Class 574=head2 The C<urxvt::term> Class
270 575
271=over 4 576=over 4
577
578=item $term->destroy
579
580Destroy the terminal object (close the window, free resources etc.).
581
582=item $isset = $term->option ($optval[, $set])
583
584Returns true if the option specified by C<$optval> is enabled, and
585optionally change it. All option values are stored by name in the hash
586C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
587
588Here is a a likely non-exhaustive list of option names, please see the
589source file F</src/optinc.h> to see the actual list:
590
591 borderLess console cursorBlink cursorUnderline hold iconic insecure
592 intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
593 pastableTabs pointerBlank reverseVideo scrollBar scrollBar_floating
594 scrollBar_right scrollTtyKeypress scrollTtyOutput scrollWithBuffer
595 secondaryScreen secondaryScroll skipBuiltinGlyphs transparent
596 tripleclickwords utmpInhibit visualBell
272 597
273=item $value = $term->resource ($name[, $newval]) 598=item $value = $term->resource ($name[, $newval])
274 599
275Returns the current resource value associated with a given name and 600Returns the current resource value associated with a given name and
276optionally sets a new value. Setting values is most useful in the C<init> 601optionally sets a new value. Setting values is most useful in the C<init>
286 611
287Please note that resource strings will currently only be freed when the 612Please note that resource strings will currently only be freed when the
288terminal is destroyed, so changing options frequently will eat memory. 613terminal is destroyed, so changing options frequently will eat memory.
289 614
290Here is a a likely non-exhaustive list of resource names, not all of which 615Here is a a likely non-exhaustive list of resource names, not all of which
291are supported in every build, please see the source to see the actual 616are supported in every build, please see the source file F</src/rsinc.h>
292list: 617to see the actual list:
293 618
294 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont 619 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
295 borderLess color cursorBlink cursorUnderline cutchars delete_key 620 borderLess color cursorBlink cursorUnderline cutchars delete_key
296 display_name embed ext_bwidth fade font geometry hold iconName 621 display_name embed ext_bwidth fade font geometry hold iconName
297 imFont imLocale inputMethod insecure int_bwidth intensityStyles 622 imFont imLocale inputMethod insecure int_bwidth intensityStyles
298 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier 623 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
299 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext 624 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
300 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd 625 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
301 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating 626 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
302 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput 627 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
303 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle 628 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
304 shade term_name title transparent transparent_all tripleclickwords 629 shade term_name title transparent transparent_all tripleclickwords
307=cut 632=cut
308 633
309sub urxvt::term::resource($$;$) { 634sub urxvt::term::resource($$;$) {
310 my ($self, $name) = (shift, shift); 635 my ($self, $name) = (shift, shift);
311 unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0); 636 unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
312 goto &urxvt::term::_resource; 637 &urxvt::term::_resource
313} 638}
639
640=item $rend = $term->rstyle ([$new_rstyle])
641
642Return and optionally change the current rendition. Text that is output by
643the terminal application will use this style.
644
645=item ($row, $col) = $term->screen_cur ([$row, $col])
646
647Return the current coordinates of the text cursor position and optionally
648set it (which is usually bad as applications don't expect that).
314 649
315=item ($row, $col) = $term->selection_mark ([$row, $col]) 650=item ($row, $col) = $term->selection_mark ([$row, $col])
316 651
317=item ($row, $col) = $term->selection_beg ([$row, $col]) 652=item ($row, $col) = $term->selection_beg ([$row, $col])
318 653
328 663
329=item $oldtext = $term->selection ([$newtext]) 664=item $oldtext = $term->selection ([$newtext])
330 665
331Return the current selection text and optionally replace it by C<$newtext>. 666Return the current selection text and optionally replace it by C<$newtext>.
332 667
333=item $term->scr_overlay ($x, $y, $text) 668#=item $term->overlay ($x, $y, $text)
334 669#
335Create a simple multi-line overlay box. See the next method for details. 670#Create a simple multi-line overlay box. See the next method for details.
671#
672#=cut
673#
674#sub urxvt::term::scr_overlay {
675# my ($self, $x, $y, $text) = @_;
676#
677# my @lines = split /\n/, $text;
678#
679# my $w = 0;
680# for (map $self->strwidth ($_), @lines) {
681# $w = $_ if $w < $_;
682# }
683#
684# $self->scr_overlay_new ($x, $y, $w, scalar @lines);
685# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
686#}
687
688=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
689
690Create a new (empty) overlay at the given position with the given
691width/height. C<$rstyle> defines the initial rendition style
692(default: C<OVERLAY_RSTYLE>).
693
694If C<$border> is C<2> (default), then a decorative border will be put
695around the box.
696
697If either C<$x> or C<$y> is negative, then this is counted from the
698right/bottom side, respectively.
699
700This method returns an urxvt::overlay object. The overlay will be visible
701as long as the perl object is referenced.
702
703The methods currently supported on C<urxvt::overlay> objects are:
704
705=over 4
706
707=item $overlay->set ($x, $y, $text, $rend)
708
709Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
710text in rxvt-unicode's special encoding and an array of rendition values
711at a specific position inside the overlay.
712
713=item $overlay->hide
714
715If visible, hide the overlay, but do not destroy it.
716
717=item $overlay->show
718
719If hidden, display the overlay again.
720
721=back
722
723=item $popup = $term->popup ($event)
724
725Creates a new C<urxvt::popup> object that implements a popup menu. The
726C<$event> I<must> be the event causing the menu to pop up (a button event,
727currently).
336 728
337=cut 729=cut
338 730
339sub urxvt::term::scr_overlay { 731sub urxvt::term::popup {
340 my ($self, $x, $y, $text) = @_; 732 my ($self, $event) = @_;
341 733
342 my @lines = split /\n/, $text; 734 $self->grab ($event->{time}, 1)
735 or return;
343 736
344 my $w = 0; 737 my $popup = bless {
345 for (map $self->strwidth ($_), @lines) { 738 term => $self,
346 $w = $_ if $w < $_; 739 event => $event,
347 } 740 }, urxvt::popup::;
348 741
349 $self->scr_overlay_new ($x, $y, $w, scalar @lines); 742 Scalar::Util::weaken $popup->{term};
350 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
351}
352 743
353=item $term->scr_overlay_new ($x, $y, $width, $height) 744 $self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
745 Scalar::Util::weaken $self->{_destroy}{$popup};
354 746
355Create a new (empty) overlay at the given position with the given 747 $popup
356width/height. A border will be put around the box. If either C<$x> or 748}
357C<$y> is negative, then this is counted from the right/bottom side,
358respectively.
359 749
360=item $term->scr_overlay_off
361
362Switch the overlay off again.
363
364=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)
365
366Put a single character (specified numerically) at the given overlay
367position.
368
369=item $term->scr_overlay_set ($x, $y, $text)
370
371Write a string at the given position into the overlay.
372
373=item $cellwidth = $term->strwidth $string 750=item $cellwidth = $term->strwidth ($string)
374 751
375Returns the number of screen-cells this string would need. Correctly 752Returns the number of screen-cells this string would need. Correctly
376accounts for wide and combining characters. 753accounts for wide and combining characters.
377 754
378=item $octets = $term->locale_encode $string 755=item $octets = $term->locale_encode ($string)
379 756
380Convert the given text string into the corresponding locale encoding. 757Convert the given text string into the corresponding locale encoding.
381 758
382=item $string = $term->locale_decode $octets 759=item $string = $term->locale_decode ($octets)
383 760
384Convert the given locale-encoded octets into a perl string. 761Convert the given locale-encoded octets into a perl string.
385 762
763=item $term->scr_add_lines ($string)
764
765Write the given text string to the screen, as if output by the application
766running inside the terminal. It may not contain command sequences (escape
767codes), but is free to use line feeds, carriage returns and tabs. The
768string is a normal text string, not in locale-dependent encoding.
769
770Normally its not a good idea to use this function, as programs might be
771confused by changes in cursor position or scrolling. Its useful inside a
772C<on_add_lines> hook, though.
773
774=item $term->cmd_parse ($octets)
775
776Similar to C<scr_add_lines>, but the argument must be in the
777locale-specific encoding of the terminal and can contain command sequences
778(escape codes) that will be interpreted.
779
386=item $term->tt_write ($octets) 780=item $term->tt_write ($octets)
387 781
388Write the octets given in C<$data> to the tty (i.e. as program input). To 782Write the octets given in C<$data> to the tty (i.e. as program input). To
389pass characters instead of octets, you should convetr you strings first to 783pass characters instead of octets, you should convert your strings first
390the locale-specific encoding using C<< $term->locale_encode >>. 784to the locale-specific encoding using C<< $term->locale_encode >>.
391 785
786=item $windowid = $term->parent
787
788Return the window id of the toplevel window.
789
790=item $windowid = $term->vt
791
792Return the window id of the terminal window.
793
794=item $window_width = $term->width
795
796=item $window_height = $term->height
797
798=item $font_width = $term->fwidth
799
800=item $font_height = $term->fheight
801
802=item $font_ascent = $term->fbase
803
804=item $terminal_rows = $term->nrow
805
806=item $terminal_columns = $term->ncol
807
808=item $has_focus = $term->focus
809
810=item $is_mapped = $term->mapped
811
812=item $max_scrollback = $term->saveLines
813
814=item $nrow_plus_saveLines = $term->total_rows
815
816=item $lines_in_scrollback = $term->nsaved
817
818Return various integers describing terminal characteristics.
819
820=item $modifiermask = $term->ModLevel3Mask
821
822=item $modifiermask = $term->ModMetaMask
823
824=item $modifiermask = $term->ModNumLockMask
825
826Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
827AltGr), the meta key (often Alt) and the num lock key, if applicable.
828
829=item $view_start = $term->view_start ([$newvalue])
830
831Returns the negative row number of the topmost line. Minimum value is
832C<0>, which displays the normal terminal contents. Larger values scroll
833this many lines into the scrollback buffer.
834
835=item $term->want_refresh
836
837Requests a screen refresh. At the next opportunity, rxvt-unicode will
838compare the on-screen display with its stored representation. If they
839differ, it redraws the differences.
840
841Used after changing terminal contents to display them.
842
843=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
844
845Returns the text of the entire row with number C<$row_number>. Row C<0>
846is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
847terminal line. The scrollback buffer starts at line C<-1> and extends to
848line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
849is requested.
850
851If C<$new_text> is specified, it will replace characters in the current
852line, starting at column C<$start_col> (default C<0>), which is useful
853to replace only parts of a line. The font index in the rendition will
854automatically be updated.
855
856C<$text> is in a special encoding: tabs and wide characters that use more
857than one cell when displayed are padded with urxvt::NOCHAR characters
858(C<chr 65535>). Characters with combining characters and other characters
859that do not fit into the normal tetx encoding will be replaced with
860characters in the private use area.
861
862You have to obey this encoding when changing text. The advantage is
863that C<substr> and similar functions work on screen cells and not on
864characters.
865
866The methods C<< $term->special_encode >> and C<< $term->special_decode >>
867can be used to convert normal strings into this encoding and vice versa.
868
869=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
870
871Like C<< $term->ROW_t >>, but returns an arrayref with rendition
872bitsets. Rendition bitsets contain information about colour, font, font
873styles and similar information. See also C<< $term->ROW_t >>.
874
875When setting rendition, the font mask will be ignored.
876
877See the section on RENDITION, above.
878
879=item $length = $term->ROW_l ($row_number[, $new_length])
880
881Returns the number of screen cells that are in use ("the line
882length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
883line is joined with the following one.
884
885=item $bool = $term->is_longer ($row_number)
886
887Returns true if the row is part of a multiple-row logical "line" (i.e.
888joined with the following row), which means all characters are in use
889and it is continued on the next row (and possibly a continuation of the
890previous row(s)).
891
892=item $line = $term->line ($row_number)
893
894Create and return a new C<urxvt::line> object that stores information
895about the logical line that row C<$row_number> is part of. It supports the
896following methods:
897
898=over 4
899
900=item $text = $line->t ([$new_text])
901
902Returns or replaces the full text of the line, similar to C<ROW_t>
903
904=item $rend = $line->r ([$new_rend])
905
906Returns or replaces the full rendition array of the line, similar to C<ROW_r>
907
908=item $length = $line->l
909
910Returns the length of the line in cells, similar to C<ROW_l>.
911
912=item $rownum = $line->beg
913
914=item $rownum = $line->end
915
916Return the row number of the first/last row of the line, respectively.
917
918=item $offset = $line->offset_of ($row, $col)
919
920Returns the character offset of the given row|col pair within the logical
921line.
922
923=item ($row, $col) = $line->coord_of ($offset)
924
925Translates a string offset into terminal coordinates again.
926
392=back 927=back
928
929=cut
930
931sub urxvt::term::line {
932 my ($self, $row) = @_;
933
934 my $maxrow = $self->nrow - 1;
935
936 my ($beg, $end) = ($row, $row);
937
938 --$beg while $self->ROW_is_longer ($beg - 1);
939 ++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
940
941 bless {
942 term => $self,
943 beg => $beg,
944 end => $end,
945 ncol => $self->ncol,
946 len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
947 }, urxvt::line::
948}
949
950sub urxvt::line::t {
951 my ($self) = @_;
952
953 if (@_ > 1)
954 {
955 $self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
956 for $self->{beg} .. $self->{end};
957 }
958
959 defined wantarray &&
960 substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
961 0, $self->{len}
962}
963
964sub urxvt::line::r {
965 my ($self) = @_;
966
967 if (@_ > 1)
968 {
969 $self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
970 for $self->{beg} .. $self->{end};
971 }
972
973 if (defined wantarray) {
974 my $rend = [
975 map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
976 ];
977 $#$rend = $self->{len} - 1;
978 return $rend;
979 }
980
981 ()
982}
983
984sub urxvt::line::beg { $_[0]{beg} }
985sub urxvt::line::end { $_[0]{end} }
986sub urxvt::line::l { $_[0]{len} }
987
988sub urxvt::line::offset_of {
989 my ($self, $row, $col) = @_;
990
991 ($row - $self->{beg}) * $self->{ncol} + $col
992}
993
994sub urxvt::line::coord_of {
995 my ($self, $offset) = @_;
996
997 use integer;
998
999 (
1000 $offset / $self->{ncol} + $self->{beg},
1001 $offset % $self->{ncol}
1002 )
1003}
1004
1005=item ($row, $col) = $line->coord_of ($offset)
1006=item $text = $term->special_encode $string
1007
1008Converts a perl string into the special encoding used by rxvt-unicode,
1009where one character corresponds to one screen cell. See
1010C<< $term->ROW_t >> for details.
1011
1012=item $string = $term->special_decode $text
1013
1014Converts rxvt-unicodes text reprsentation into a perl string. See
1015C<< $term->ROW_t >> for details.
1016
1017=back
1018
1019=head2 The C<urxvt::popup> Class
1020
1021=over 4
1022
1023=cut
1024
1025package urxvt::popup;
1026
1027sub add_item {
1028 my ($self, $item) = @_;
1029
1030 push @{ $self->{item} }, $item;
1031}
1032
1033sub add_button {
1034 my ($self, $text, $cb) = @_;
1035
1036 $self->add_item ({ type => "button", text => "[ $text ]", activate => $cb,
1037 render => sub { $_[0]{text} },
1038 });
1039}
1040
1041sub add_toggle {
1042 my ($self, $text, $cb, $value) = @_;
1043
1044 my $item; $item = {
1045 type => "button",
1046 text => " $text",
1047 value => $value,
1048 render => sub { ($item->{value} ? "✔" : " ") . $text },
1049 activate => sub { $cb->($item->{value} = !$item->{value}); },
1050 };
1051
1052 $self->add_item ($item);
1053}
1054
1055sub show {
1056 my ($self) = @_;
1057
1058 local $urxvt::popup::self = $self;
1059
1060 urxvt->new ("--perl-lib" => "", "--perl-ext-common" => "", "-pty-fd" => -1, "-sl" => 0, "-b" => 0,
1061 "--transient-for" => $self->{term}->parent,
1062 "-pe" => "urxvt-popup")
1063 or die "unable to create popup window\n";
1064}
1065
1066sub DESTROY {
1067 my ($self) = @_;
1068
1069 $self->{term}->ungrab;
1070}
393 1071
394=head2 The C<urxvt::timer> Class 1072=head2 The C<urxvt::timer> Class
395 1073
396This class implements timer watchers/events. Time is represented as a 1074This class implements timer watchers/events. Time is represented as a
397fractional number of seconds since the epoch. Example: 1075fractional number of seconds since the epoch. Example:
398 1076
399 # create a digital clock display in upper right corner 1077 $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
400 $term->{timer} = urxvt::timer 1078 $term->{timer} = urxvt::timer
401 ->new 1079 ->new
402 ->start (urxvt::NOW) 1080 ->interval (1)
403 ->cb (sub { 1081 ->cb (sub {
404 my ($timer) = @_;
405 my $time = $timer->at;
406 $timer->start ($time + 1);
407 $self->scr_overlay (-1, 0, 1082 $term->{overlay}->set (0, 0,
408 POSIX::strftime "%H:%M:%S", localtime $time); 1083 sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
409 }); 1084 });
410 1085
411=over 4 1086=over 4
412 1087
413=item $timer = new urxvt::timer 1088=item $timer = new urxvt::timer
414 1089
415Create a new timer object in stopped state. 1090Create a new timer object in started state. It is scheduled to fire
1091immediately.
416 1092
417=item $timer = $timer->cb (sub { my ($timer) = @_; ... }) 1093=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
418 1094
419Set the callback to be called when the timer triggers. 1095Set the callback to be called when the timer triggers.
420 1096
423Return the time this watcher will fire next. 1099Return the time this watcher will fire next.
424 1100
425=item $timer = $timer->set ($tstamp) 1101=item $timer = $timer->set ($tstamp)
426 1102
427Set the time the event is generated to $tstamp. 1103Set the time the event is generated to $tstamp.
1104
1105=item $timer = $timer->interval ($interval)
1106
1107Normally (and when C<$interval> is C<0>), the timer will automatically
1108stop after it has fired once. If C<$interval> is non-zero, then the timer
1109is automatically rescheduled at the given intervals.
428 1110
429=item $timer = $timer->start 1111=item $timer = $timer->start
430 1112
431Start the timer. 1113Start the timer.
432 1114
495This variable controls the verbosity level of the perl extension. Higher 1177This variable controls the verbosity level of the perl extension. Higher
496numbers indicate more verbose output. 1178numbers indicate more verbose output.
497 1179
498=over 4 1180=over 4
499 1181
500=item 0 - only fatal messages 1182=item =0 - only fatal messages
501 1183
502=item 3 - script loading and management 1184=item =3 - script loading and management
503 1185
504=item 10 - all events received 1186=item =10 - all events received
505 1187
506=back 1188=back
507 1189
508=head1 AUTHOR 1190=head1 AUTHOR
509 1191

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