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Revision 1.10 by root, Mon Jan 2 20:47:52 2006 UTC vs.
Revision 1.54 by root, Sun Jan 8 01:59:29 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 (enabled by default)
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 option-popup (enabled by default)
62
63Binds a popup menu to Ctrl-Button3 that lets you toggle (some) options at
64runtime.
65
66=item digital-clock
67
68Displays a digital clock using the built-in overlay.
69
70=item mark-urls
71
72Uses per-line display filtering (C<on_line_update>) to underline urls.
73
74=item block-graphics-to-ascii
75
76A not very useful example of filtering all text output to the terminal,
77by replacing all line-drawing characters (U+2500 .. U+259F) by a
78similar-looking ascii character.
79
80=item example-refresh-hooks
81
82Displays a very simple digital clock in the upper right corner of the
83window. Illustrates overwriting the refresh callbacks to create your own
84overlays or changes.
85
86=back
28 87
29=head2 General API Considerations 88=head2 General API Considerations
30 89
31All objects (such as terminals, time watchers etc.) are typical 90All objects (such as terminals, time watchers etc.) are typical
32reference-to-hash objects. The hash can be used to store anything you 91reference-to-hash objects. The hash can be used to store anything you
33like. All members starting with an underscore (such as C<_ptr> or 92like. All members starting with an underscore (such as C<_ptr> or
34C<_hook>) are reserved for internal uses and must not be accessed or 93C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
35modified). 94modified).
36 95
37When objects are destroyed on the C++ side, the perl object hashes are 96When 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 97emptied, 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 98the like inside the terminal object so they get destroyed as soon as the
40terminal is destroyed. 99terminal is destroyed.
41 100
101Argument names also often indicate the type of a parameter. Here are some
102hints on what they mean:
103
104=over 4
105
106=item $text
107
108Rxvt-unicodes special way of encoding text, where one "unicode" character
109always represents one screen cell. See L<row_t> for a discussion of this format.
110
111=item $string
112
113A perl text string, with an emphasis on I<text>. It can store all unicode
114characters and is to be distinguished with text encoded in a specific
115encoding (often locale-specific) and binary data.
116
117=item $octets
118
119Either binary data or - more common - a text string encoded in a
120locale-specific way.
121
122=back
123
42=head2 Hooks 124=head2 Hooks
43 125
44The following subroutines can be declared in loaded scripts, and will be called 126The following subroutines can be declared in extension files, and will be
45whenever the relevant event happens. 127called whenever the relevant event happens.
128
129The first argument passed to them is an object private to each terminal
130and extension package. You can call all C<urxvt::term> methods on it, but
131its not a real C<urxvt::term> object. Instead, the real C<urxvt::term>
132object that is shared between all packages is stored in the C<term>
133member. It is, however, blessed intot he package of the extension script,
134so for all practical purposes you can treat an extension script as a class.
46 135
47All of them must return a boolean value. If it is true, then the event 136All 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, 137counts 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. 138and the relevant action might not be carried out by the C++ code.
50 139
53=over 4 142=over 4
54 143
55=item on_init $term 144=item on_init $term
56 145
57Called after a new terminal object has been initialized, but before 146Called after a new terminal object has been initialized, but before
58windows are created or the command gets run. 147windows are created or the command gets run. Most methods are unsafe to
148call or deliver senseless data, as terminal size and other characteristics
149have not yet been determined. You can safely query and change resources,
150though.
59 151
60=item on_reset $term 152=item on_reset $term
61 153
62Called after the screen is "reset" for any reason, such as resizing or 154Called 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 155control sequences. Here is where you can react on changes to size-related
83requested from the server. The selection text can be queried and changed 175requested from the server. The selection text can be queried and changed
84by calling C<< $term->selection >>. 176by calling C<< $term->selection >>.
85 177
86Returning a true value aborts selection grabbing. It will still be hilighted. 178Returning a true value aborts selection grabbing. It will still be hilighted.
87 179
88=item on_focus_in $term 180=item on_sel_extend $term
89 181
90Called whenever the window gets the keyboard focus, before urxvt does 182Called whenever the user tries to extend the selection (e.g. with a double
91focus in processing. 183click) and is either supposed to return false (normal operation), or
92 184should 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. 185processing.
186
187See the F<selection> example extension.
97 188
98=item on_view_change $term, $offset 189=item on_view_change $term, $offset
99 190
100Called whenever the view offset changes, i..e the user or program 191Called whenever the view offset changes, i..e the user or program
101scrolls. Offset C<0> means display the normal terminal, positive values 192scrolls. Offset C<0> means display the normal terminal, positive values
112number of lines that will be in the scrollback buffer. 203number of lines that will be in the scrollback buffer.
113 204
114=item on_tty_activity $term *NYI* 205=item on_tty_activity $term *NYI*
115 206
116Called whenever the program(s) running in the urxvt window send output. 207Called whenever the program(s) running in the urxvt window send output.
208
209=item on_osc_seq $term, $string
210
211Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
212operating system command) is processed. Cursor position and other state
213information is up-to-date when this happens. For interoperability, the
214string should start with the extension name and a colon, to distinguish
215it from commands for other extensions, and this might be enforced in the
216future.
217
218Be careful not ever to trust (in a security sense) the data you receive,
219as its source can not easily be controleld (e-mail content, messages from
220other users on the same system etc.).
221
222=item on_add_lines $term, $string
223
224Called whenever text is about to be output, with the text as argument. You
225can filter/change and output the text yourself by returning a true value
226and calling C<< $term->scr_add_lines >> yourself. Please note that this
227might be very slow, however, as your hook is called for B<all> text being
228output.
229
230=item on_line_update $term, $row
231
232Called whenever a line was updated or changed. Can be used to filter
233screen output (e.g. underline urls or other useless stuff). Only lines
234that are being shown will be filtered, and, due to performance reasons,
235not always immediately.
236
237The row number is always the topmost row of the line if the line spans
238multiple rows.
239
240Please note that, if you change the line, then the hook might get called
241later with the already-modified line (e.g. if unrelated parts change), so
242you cannot just toggle rendition bits, but only set them.
117 243
118=item on_refresh_begin $term 244=item on_refresh_begin $term
119 245
120Called just before the screen gets redrawn. Can be used for overlay 246Called just before the screen gets redrawn. Can be used for overlay
121or similar effects by modify terminal contents in refresh_begin, and 247or similar effects by modify terminal contents in refresh_begin, and
124 250
125=item on_refresh_end $term 251=item on_refresh_end $term
126 252
127Called just after the screen gets redrawn. See C<on_refresh_begin>. 253Called just after the screen gets redrawn. See C<on_refresh_begin>.
128 254
255=item on_keyboard_command $term, $string
256
257Called whenever the user presses a key combination that has a
258C<perl:string> action bound to it (see description of the B<keysym>
259resource in the @@RXVT_NAME@@(1) manpage).
260
261=item on_focus_in $term
262
263Called whenever the window gets the keyboard focus, before rxvt-unicode
264does focus in processing.
265
266=item on_focus_out $term
267
268Called wheneever the window loses keyboard focus, before rxvt-unicode does
269focus out processing.
270
271=item on_key_press $term, $event, $octets
272
273=item on_key_release $term, $event
274
275=item on_button_press $term, $event
276
277=item on_button_release $term, $event
278
279=item on_motion_notify $term, $event
280
281=item on_map_notify $term, $event
282
283=item on_unmap_notify $term, $event
284
285Called whenever the corresponding X event is received for the terminal If
286the hook returns true, then the even will be ignored by rxvt-unicode.
287
288The event is a hash with most values as named by Xlib (see the XEvent
289manpage), with the additional members C<row> and C<col>, which are the row
290and column under the mouse cursor.
291
292C<on_key_press> additionally receives the string rxvt-unicode would
293output, if any, in locale-specific encoding.
294
295subwindow.
296
129=back 297=back
130 298
299=head2 Variables in the C<urxvt> Package
300
301=over 4
302
303=item $urxvt::TERM
304
305The current terminal. This variable stores the current C<urxvt::term>
306object, whenever a callback/hook is executing.
307
308=back
309
131=head2 Functions in the C<urxvt> Package 310=head2 Functions in the C<urxvt> Package
132 311
133=over 4 312=over 4
313
314=item $term = new urxvt [arg...]
315
316Creates a new terminal, very similar as if you had started it with
317C<system $binfile, arg...>. Croaks (and probably outputs an error message)
318if the new instance couldn't be created. Returns C<undef> if the new
319instance didn't initialise perl, and the terminal object otherwise. The
320C<init> and C<start> hooks will be called during the call.
134 321
135=item urxvt::fatal $errormessage 322=item urxvt::fatal $errormessage
136 323
137Fatally aborts execution with the given error message. Avoid at all 324Fatally aborts execution with the given error message. Avoid at all
138costs! The only time this is acceptable is when the terminal process 325costs! The only time this is acceptable is when the terminal process
149 336
150=item $time = urxvt::NOW 337=item $time = urxvt::NOW
151 338
152Returns the "current time" (as per the event loop). 339Returns the "current time" (as per the event loop).
153 340
341=item urxvt::CurrentTime
342
343=item urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
344Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
345Button4Mask, Button5Mask, AnyModifier
346
347Various constants for use in X events.
348
349=back
350
351=head2 RENDITION
352
353Rendition bitsets contain information about colour, font, font styles and
354similar information for each screen cell.
355
356The following "macros" deal with changes in rendition sets. You should
357never just create a bitset, you should always modify an existing one,
358as they contain important information required for correct operation of
359rxvt-unicode.
360
361=over 4
362
363=item $rend = urxvt::DEFAULT_RSTYLE
364
365Returns the default rendition, as used when the terminal is starting up or
366being reset. Useful as a base to start when creating renditions.
367
368=item $rend = urxvt::OVERLAY_RSTYLE
369
370Return the rendition mask used for overlays by default.
371
372=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
373
374Return the bit that enabled bold, italic, blink, reverse-video and
375underline, respectively. To enable such a style, just logically OR it into
376the bitset.
377
378=item $foreground = urxvt::GET_BASEFG $rend
379
380=item $background = urxvt::GET_BASEBG $rend
381
382Return the foreground/background colour index, respectively.
383
384=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)
385
386=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)
387
388Replace the foreground/background colour in the rendition mask with the
389specified one.
390
391=item $value = urxvt::GET_CUSTOM ($rend)
392
393Return the "custom" value: Every rendition has 5 bits for use by
394extensions. They can be set and changed as you like and are initially
395zero.
396
397=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)
398
399Change the custom value.
400
401=back
402
154=cut 403=cut
155 404
156package urxvt; 405package urxvt;
157 406
407use utf8;
158use strict; 408use strict;
409use Scalar::Util ();
410use List::Util ();
159 411
160our $term; 412our $TERM;
161our @HOOKNAME; 413our @HOOKNAME;
414our %OPTION;
162our $LIBDIR; 415our $LIBDIR;
163 416
164BEGIN { 417BEGIN {
165 urxvt->bootstrap; 418 urxvt->bootstrap;
166 419
190 my $name = $HOOKNAME[$htype]; 443 my $name = $HOOKNAME[$htype];
191 444
192 my $ref = $pkg->can ("on_" . lc $name) 445 my $ref = $pkg->can ("on_" . lc $name)
193 or next; 446 or next;
194 447
195 $term->{_hook}[$htype]{$ref*1} = $ref; 448 $TERM->{_hook}[$htype]{$pkg} = $ref;
196 $hook_count[$htype]++ 449 $hook_count[$htype]++
197 or set_should_invoke $htype, 1; 450 or set_should_invoke $htype, 1;
198 } 451 }
199} 452}
200 453
201my $script_pkg = "script0000"; 454my $extension_pkg = "extension0000";
202my %script_pkg; 455my %extension_pkg;
203 456
204# load a single script into its own package, once only 457# load a single script into its own package, once only
205sub script_package($) { 458sub extension_package($) {
206 my ($path) = @_; 459 my ($path) = @_;
207 460
208 $script_pkg{$path} ||= do { 461 $extension_pkg{$path} ||= do {
209 my $pkg = "urxvt::" . ($script_pkg++); 462 my $pkg = "urxvt::" . ($extension_pkg++);
210 463
211 verbose 3, "loading script '$path' into package '$pkg'"; 464 verbose 3, "loading extension '$path' into package '$pkg'";
212 465
213 open my $fh, "<:raw", $path 466 open my $fh, "<:raw", $path
214 or die "$path: $!"; 467 or die "$path: $!";
215 468
216 my $source = "package $pkg; use strict; use utf8;\n" 469 my $source = "package $pkg; use strict; use utf8;\n"
470 . "use base urxvt::term::proxy::;\n"
217 . "#line 1 \"$path\"\n{\n" 471 . "#line 1 \"$path\"\n{\n"
218 . (do { local $/; <$fh> }) 472 . (do { local $/; <$fh> })
219 . "\n};\n1"; 473 . "\n};\n1";
220 474
221 eval $source or die "$path: $@"; 475 eval $source or die "$path: $@";
222 476
223 $pkg 477 $pkg
224 } 478 }
225} 479}
226 480
481our $retval; # return value for urxvt
482
227# called by the rxvt core 483# called by the rxvt core
228sub invoke { 484sub invoke {
229 local $term = shift; 485 local $TERM = shift;
230 my $htype = shift; 486 my $htype = shift;
231 487
232 if ($htype == 0) { # INIT 488 if ($htype == 0) { # INIT
233 my @dirs = ((split /:/, $term->resource ("perl_lib")), "$LIBDIR/perl"); 489 my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
490
491 my %want_ext;
234 492
235 for my $ext (split /:/, $term->resource ("perl_ext")) { 493 for (map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) {
494 if ($_ eq "default") {
495 $want_ext{$_}++ for qw(selection option-popup);
496 } elsif (/^-(.*)$/) {
497 delete $want_ext{$1};
498 } else {
499 $want_ext{$_}++;
500 }
501 }
502
503 for my $ext (keys %want_ext) {
236 my @files = grep -f $_, map "$_/$ext", @dirs; 504 my @files = grep -f $_, map "$_/$ext", @dirs;
237 505
238 if (@files) { 506 if (@files) {
239 register_package script_package $files[0]; 507 register_package extension_package $files[0];
240 } else { 508 } else {
241 warn "perl extension '$ext' not found in perl library search path\n"; 509 warn "perl extension '$ext' not found in perl library search path\n";
242 } 510 }
243 } 511 }
512 }
244 513
514 $retval = undef;
515
516 if (my $cb = $TERM->{_hook}[$htype]) {
517 verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
518 if $verbosity >= 10;
519
520 keys %$cb;
521
522 while (my ($pkg, $cb) = each %$cb) {
523 eval {
524 $retval = $cb->(
525 $TERM->{_pkg}{$pkg} ||= do {
526 my $proxy = bless { }, $pkg;
527 Scalar::Util::weaken ($proxy->{term} = $TERM);
528 $proxy
529 },
530 @_,
531 ) and last;
532 };
533 warn $@ if $@;#d#
534 }
535 }
536
245 } elsif ($htype == 1) { # DESTROY 537 if ($htype == 1) { # DESTROY
538 # remove hooks if unused
246 if (my $hook = $term->{_hook}) { 539 if (my $hook = $TERM->{_hook}) {
247 for my $htype (0..$#$hook) { 540 for my $htype (0..$#$hook) {
248 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} } 541 $hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} }
249 or set_should_invoke $htype, 0; 542 or set_should_invoke $htype, 0;
250 } 543 }
251 } 544 }
545
546 # clear package objects
547 %$_ = () for values %{ $TERM->{_pkg} };
548
549 # clear package
550 %$TERM = ();
252 } 551 }
253 552
254 my $cb = $term->{_hook}[$htype] 553 $retval
255 or return;
256
257 verbose 10, "$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} 554}
266 555
267=back 556sub urxvt::term::proxy::AUTOLOAD {
557 $urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/
558 or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";
559
560 eval qq{
561 sub $urxvt::term::proxy::AUTOLOAD {
562 my \$proxy = shift;
563 \$proxy->{term}->$1 (\@_)
564 }
565 1
566 } or die "FATAL: unable to compile method forwarder: $@";
567
568 goto &$urxvt::term::proxy::AUTOLOAD;
569}
570
571sub urxvt::destroy_hook::DESTROY {
572 ${$_[0]}->();
573}
574
575sub urxvt::destroy_hook(&) {
576 bless \shift, urxvt::destroy_hook::
577}
268 578
269=head2 The C<urxvt::term> Class 579=head2 The C<urxvt::term> Class
270 580
271=over 4 581=over 4
582
583=item $term->destroy
584
585Destroy the terminal object (close the window, free resources etc.).
586
587=item $isset = $term->option ($optval[, $set])
588
589Returns true if the option specified by C<$optval> is enabled, and
590optionally change it. All option values are stored by name in the hash
591C<%urxvt::OPTION>. Options not enabled in this binary are not in the hash.
592
593Here is a a likely non-exhaustive list of option names, please see the
594source file F</src/optinc.h> to see the actual list:
595
596 borderLess console cursorBlink cursorUnderline hold iconic insecure
597 intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
598 pastableTabs pointerBlank reverseVideo scrollBar scrollBar_floating
599 scrollBar_right scrollTtyKeypress scrollTtyOutput scrollWithBuffer
600 secondaryScreen secondaryScroll skipBuiltinGlyphs transparent
601 tripleclickwords utmpInhibit visualBell
272 602
273=item $value = $term->resource ($name[, $newval]) 603=item $value = $term->resource ($name[, $newval])
274 604
275Returns the current resource value associated with a given name and 605Returns the current resource value associated with a given name and
276optionally sets a new value. Setting values is most useful in the C<init> 606optionally sets a new value. Setting values is most useful in the C<init>
286 616
287Please note that resource strings will currently only be freed when the 617Please note that resource strings will currently only be freed when the
288terminal is destroyed, so changing options frequently will eat memory. 618terminal is destroyed, so changing options frequently will eat memory.
289 619
290Here is a a likely non-exhaustive list of resource names, not all of which 620Here 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 621are supported in every build, please see the source file F</src/rsinc.h>
292list: 622to see the actual list:
293 623
294 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont 624 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
295 borderLess color cursorBlink cursorUnderline cutchars delete_key 625 borderLess color cursorBlink cursorUnderline cutchars delete_key
296 display_name embed ext_bwidth fade font geometry hold iconName 626 display_name embed ext_bwidth fade font geometry hold iconName
297 imFont imLocale inputMethod insecure int_bwidth intensityStyles 627 imFont imLocale inputMethod insecure int_bwidth intensityStyles
298 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier 628 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
299 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext 629 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
300 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd 630 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
301 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating 631 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
302 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput 632 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
303 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle 633 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
304 shade term_name title transparent transparent_all tripleclickwords 634 shade term_name title transparent transparent_all tripleclickwords
307=cut 637=cut
308 638
309sub urxvt::term::resource($$;$) { 639sub urxvt::term::resource($$;$) {
310 my ($self, $name) = (shift, shift); 640 my ($self, $name) = (shift, shift);
311 unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0); 641 unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0);
312 goto &urxvt::term::_resource; 642 &urxvt::term::_resource
313} 643}
644
645=item $rend = $term->rstyle ([$new_rstyle])
646
647Return and optionally change the current rendition. Text that is output by
648the terminal application will use this style.
649
650=item ($row, $col) = $term->screen_cur ([$row, $col])
651
652Return the current coordinates of the text cursor position and optionally
653set it (which is usually bad as applications don't expect that).
314 654
315=item ($row, $col) = $term->selection_mark ([$row, $col]) 655=item ($row, $col) = $term->selection_mark ([$row, $col])
316 656
317=item ($row, $col) = $term->selection_beg ([$row, $col]) 657=item ($row, $col) = $term->selection_beg ([$row, $col])
318 658
328 668
329=item $oldtext = $term->selection ([$newtext]) 669=item $oldtext = $term->selection ([$newtext])
330 670
331Return the current selection text and optionally replace it by C<$newtext>. 671Return the current selection text and optionally replace it by C<$newtext>.
332 672
333=item $term->scr_overlay ($x, $y, $text) 673#=item $term->overlay ($x, $y, $text)
334 674#
335Create a simple multi-line overlay box. See the next method for details. 675#Create a simple multi-line overlay box. See the next method for details.
676#
677#=cut
678#
679#sub urxvt::term::scr_overlay {
680# my ($self, $x, $y, $text) = @_;
681#
682# my @lines = split /\n/, $text;
683#
684# my $w = 0;
685# for (map $self->strwidth ($_), @lines) {
686# $w = $_ if $w < $_;
687# }
688#
689# $self->scr_overlay_new ($x, $y, $w, scalar @lines);
690# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
691#}
692
693=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
694
695Create a new (empty) overlay at the given position with the given
696width/height. C<$rstyle> defines the initial rendition style
697(default: C<OVERLAY_RSTYLE>).
698
699If C<$border> is C<2> (default), then a decorative border will be put
700around the box.
701
702If either C<$x> or C<$y> is negative, then this is counted from the
703right/bottom side, respectively.
704
705This method returns an urxvt::overlay object. The overlay will be visible
706as long as the perl object is referenced.
707
708The methods currently supported on C<urxvt::overlay> objects are:
709
710=over 4
711
712=item $overlay->set ($x, $y, $text, $rend)
713
714Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
715text in rxvt-unicode's special encoding and an array of rendition values
716at a specific position inside the overlay.
717
718=item $overlay->hide
719
720If visible, hide the overlay, but do not destroy it.
721
722=item $overlay->show
723
724If hidden, display the overlay again.
725
726=back
727
728=item $popup = $term->popup ($event)
729
730Creates a new C<urxvt::popup> object that implements a popup menu. The
731C<$event> I<must> be the event causing the menu to pop up (a button event,
732currently).
336 733
337=cut 734=cut
338 735
339sub urxvt::term::scr_overlay { 736sub urxvt::term::popup {
340 my ($self, $x, $y, $text) = @_; 737 my ($self, $event) = @_;
341 738
342 my @lines = split /\n/, $text; 739 $self->grab ($event->{time}, 1)
740 or return;
343 741
344 my $w = 0; 742 my $popup = bless {
345 for (map $self->strwidth ($_), @lines) { 743 term => $self,
346 $w = $_ if $w < $_; 744 event => $event,
347 } 745 }, urxvt::popup::;
348 746
349 $self->scr_overlay_new ($x, $y, $w, scalar @lines); 747 Scalar::Util::weaken $popup->{term};
350 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
351}
352 748
353=item $term->scr_overlay_new ($x, $y, $width, $height) 749 $self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy };
750 Scalar::Util::weaken $self->{_destroy}{$popup};
354 751
355Create a new (empty) overlay at the given position with the given 752 $popup
356width/height. A border will be put around the box. If either C<$x> or 753}
357C<$y> is negative, then this is counted from the right/bottom side,
358respectively.
359 754
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 755=item $cellwidth = $term->strwidth ($string)
374 756
375Returns the number of screen-cells this string would need. Correctly 757Returns the number of screen-cells this string would need. Correctly
376accounts for wide and combining characters. 758accounts for wide and combining characters.
377 759
378=item $octets = $term->locale_encode $string 760=item $octets = $term->locale_encode ($string)
379 761
380Convert the given text string into the corresponding locale encoding. 762Convert the given text string into the corresponding locale encoding.
381 763
382=item $string = $term->locale_decode $octets 764=item $string = $term->locale_decode ($octets)
383 765
384Convert the given locale-encoded octets into a perl string. 766Convert the given locale-encoded octets into a perl string.
385 767
768=item $term->scr_add_lines ($string)
769
770Write the given text string to the screen, as if output by the application
771running inside the terminal. It may not contain command sequences (escape
772codes), but is free to use line feeds, carriage returns and tabs. The
773string is a normal text string, not in locale-dependent encoding.
774
775Normally its not a good idea to use this function, as programs might be
776confused by changes in cursor position or scrolling. Its useful inside a
777C<on_add_lines> hook, though.
778
779=item $term->cmd_parse ($octets)
780
781Similar to C<scr_add_lines>, but the argument must be in the
782locale-specific encoding of the terminal and can contain command sequences
783(escape codes) that will be interpreted.
784
386=item $term->tt_write ($octets) 785=item $term->tt_write ($octets)
387 786
388Write the octets given in C<$data> to the tty (i.e. as program input). To 787Write the octets given in C<$data> to the tty (i.e. as program input). To
389pass characters instead of octets, you should convetr you strings first to 788pass characters instead of octets, you should convert your strings first
390the locale-specific encoding using C<< $term->locale_encode >>. 789to the locale-specific encoding using C<< $term->locale_encode >>.
790
791=item $windowid = $term->parent
792
793Return the window id of the toplevel window.
794
795=item $windowid = $term->vt
796
797Return the window id of the terminal window.
798
799=item $window_width = $term->width
800
801=item $window_height = $term->height
802
803=item $font_width = $term->fwidth
804
805=item $font_height = $term->fheight
806
807=item $font_ascent = $term->fbase
808
809=item $terminal_rows = $term->nrow
810
811=item $terminal_columns = $term->ncol
812
813=item $has_focus = $term->focus
814
815=item $is_mapped = $term->mapped
816
817=item $max_scrollback = $term->saveLines
818
819=item $nrow_plus_saveLines = $term->total_rows
820
821=item $lines_in_scrollback = $term->nsaved
822
823Return various integers describing terminal characteristics.
824
825=item $modifiermask = $term->ModLevel3Mask
826
827=item $modifiermask = $term->ModMetaMask
828
829=item $modifiermask = $term->ModNumLockMask
830
831Return the modifier masks corresponding to the "ISO Level 3 Shift" (often
832AltGr), the meta key (often Alt) and the num lock key, if applicable.
833
834=item $view_start = $term->view_start ([$newvalue])
835
836Returns the negative row number of the topmost line. Minimum value is
837C<0>, which displays the normal terminal contents. Larger values scroll
838this many lines into the scrollback buffer.
839
840=item $term->want_refresh
841
842Requests a screen refresh. At the next opportunity, rxvt-unicode will
843compare the on-screen display with its stored representation. If they
844differ, it redraws the differences.
845
846Used after changing terminal contents to display them.
847
848=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
849
850Returns the text of the entire row with number C<$row_number>. Row C<0>
851is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
852terminal line. The scrollback buffer starts at line C<-1> and extends to
853line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
854is requested.
855
856If C<$new_text> is specified, it will replace characters in the current
857line, starting at column C<$start_col> (default C<0>), which is useful
858to replace only parts of a line. The font index in the rendition will
859automatically be updated.
860
861C<$text> is in a special encoding: tabs and wide characters that use more
862than one cell when displayed are padded with urxvt::NOCHAR characters
863(C<chr 65535>). Characters with combining characters and other characters
864that do not fit into the normal tetx encoding will be replaced with
865characters in the private use area.
866
867You have to obey this encoding when changing text. The advantage is
868that C<substr> and similar functions work on screen cells and not on
869characters.
870
871The methods C<< $term->special_encode >> and C<< $term->special_decode >>
872can be used to convert normal strings into this encoding and vice versa.
873
874=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
875
876Like C<< $term->ROW_t >>, but returns an arrayref with rendition
877bitsets. Rendition bitsets contain information about colour, font, font
878styles and similar information. See also C<< $term->ROW_t >>.
879
880When setting rendition, the font mask will be ignored.
881
882See the section on RENDITION, above.
883
884=item $length = $term->ROW_l ($row_number[, $new_length])
885
886Returns the number of screen cells that are in use ("the line
887length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
888line is joined with the following one.
889
890=item $bool = $term->is_longer ($row_number)
891
892Returns true if the row is part of a multiple-row logical "line" (i.e.
893joined with the following row), which means all characters are in use
894and it is continued on the next row (and possibly a continuation of the
895previous row(s)).
896
897=item $line = $term->line ($row_number)
898
899Create and return a new C<urxvt::line> object that stores information
900about the logical line that row C<$row_number> is part of. It supports the
901following methods:
902
903=over 4
904
905=item $text = $line->t ([$new_text])
906
907Returns or replaces the full text of the line, similar to C<ROW_t>
908
909=item $rend = $line->r ([$new_rend])
910
911Returns or replaces the full rendition array of the line, similar to C<ROW_r>
912
913=item $length = $line->l
914
915Returns the length of the line in cells, similar to C<ROW_l>.
916
917=item $rownum = $line->beg
918
919=item $rownum = $line->end
920
921Return the row number of the first/last row of the line, respectively.
922
923=item $offset = $line->offset_of ($row, $col)
924
925Returns the character offset of the given row|col pair within the logical
926line.
927
928=item ($row, $col) = $line->coord_of ($offset)
929
930Translates a string offset into terminal coordinates again.
391 931
392=back 932=back
933
934=cut
935
936sub urxvt::term::line {
937 my ($self, $row) = @_;
938
939 my $maxrow = $self->nrow - 1;
940
941 my ($beg, $end) = ($row, $row);
942
943 --$beg while $self->ROW_is_longer ($beg - 1);
944 ++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
945
946 bless {
947 term => $self,
948 beg => $beg,
949 end => $end,
950 ncol => $self->ncol,
951 len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
952 }, urxvt::line::
953}
954
955sub urxvt::line::t {
956 my ($self) = @_;
957
958 if (@_ > 1)
959 {
960 $self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
961 for $self->{beg} .. $self->{end};
962 }
963
964 defined wantarray &&
965 substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
966 0, $self->{len}
967}
968
969sub urxvt::line::r {
970 my ($self) = @_;
971
972 if (@_ > 1)
973 {
974 $self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
975 for $self->{beg} .. $self->{end};
976 }
977
978 if (defined wantarray) {
979 my $rend = [
980 map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
981 ];
982 $#$rend = $self->{len} - 1;
983 return $rend;
984 }
985
986 ()
987}
988
989sub urxvt::line::beg { $_[0]{beg} }
990sub urxvt::line::end { $_[0]{end} }
991sub urxvt::line::l { $_[0]{len} }
992
993sub urxvt::line::offset_of {
994 my ($self, $row, $col) = @_;
995
996 ($row - $self->{beg}) * $self->{ncol} + $col
997}
998
999sub urxvt::line::coord_of {
1000 my ($self, $offset) = @_;
1001
1002 use integer;
1003
1004 (
1005 $offset / $self->{ncol} + $self->{beg},
1006 $offset % $self->{ncol}
1007 )
1008}
1009
1010=item ($row, $col) = $line->coord_of ($offset)
1011=item $text = $term->special_encode $string
1012
1013Converts a perl string into the special encoding used by rxvt-unicode,
1014where one character corresponds to one screen cell. See
1015C<< $term->ROW_t >> for details.
1016
1017=item $string = $term->special_decode $text
1018
1019Converts rxvt-unicodes text reprsentation into a perl string. See
1020C<< $term->ROW_t >> for details.
1021
1022=back
1023
1024=head2 The C<urxvt::popup> Class
1025
1026=over 4
1027
1028=cut
1029
1030package urxvt::popup;
1031
1032sub add_item {
1033 my ($self, $item) = @_;
1034
1035 $item->{rend}{normal} = "\x1b[0;30;47m" unless exists $item->{rend}{normal};
1036 $item->{rend}{hover} = "\x1b[0;30;46m" unless exists $item->{rend}{hover};
1037 $item->{rend}{active} = "\x1b[m" unless exists $item->{rend}{active};
1038
1039 $item->{render} ||= sub { $_[0]{text} };
1040
1041 push @{ $self->{item} }, $item;
1042}
1043
1044sub add_separator {
1045 my ($self, $sep) = @_;
1046
1047 $sep ||= "═";
1048
1049 $self->add_item ({
1050 rend => { normal => "\x1b[0;30;47m", hover => "\x1b[0;30;47m", active => "\x1b[0;30;47m" },
1051 text => "",
1052 render => sub { $sep x $urxvt::TERM->ncol },
1053 activate => sub { },
1054 });
1055}
1056
1057sub add_title {
1058 my ($self, $title) = @_;
1059
1060 $self->add_item ({
1061 rend => { normal => "\x1b[38;5;11;44m", hover => "\x1b[38;5;11;44m", active => "\x1b[38;5;11;44m" },
1062 text => $title,
1063 activate => sub { },
1064 });
1065}
1066
1067sub add_button {
1068 my ($self, $text, $cb) = @_;
1069
1070 $self->add_item ({ type => "button", text => "[ $text ]", activate => $cb});
1071}
1072
1073sub add_toggle {
1074 my ($self, $text, $cb, $value) = @_;
1075
1076 my $item; $item = {
1077 type => "button",
1078 text => " $text",
1079 value => $value,
1080 render => sub { ($item->{value} ? "* " : " ") . $text },
1081 activate => sub { $cb->($item->{value} = !$item->{value}); },
1082 };
1083
1084 $self->add_item ($item);
1085}
1086
1087sub show {
1088 my ($self) = @_;
1089
1090 local $urxvt::popup::self = $self;
1091
1092 urxvt->new ("--perl-lib" => "", "--perl-ext-common" => "", "-pty-fd" => -1, "-sl" => 0, "-b" => 0,
1093 "--transient-for" => $self->{term}->parent,
1094 "-pe" => "urxvt-popup")
1095 or die "unable to create popup window\n";
1096}
1097
1098sub DESTROY {
1099 my ($self) = @_;
1100
1101 $self->{term}->ungrab;
1102}
393 1103
394=head2 The C<urxvt::timer> Class 1104=head2 The C<urxvt::timer> Class
395 1105
396This class implements timer watchers/events. Time is represented as a 1106This class implements timer watchers/events. Time is represented as a
397fractional number of seconds since the epoch. Example: 1107fractional number of seconds since the epoch. Example:
398 1108
399 # create a digital clock display in upper right corner 1109 $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
400 $term->{timer} = urxvt::timer 1110 $term->{timer} = urxvt::timer
401 ->new 1111 ->new
402 ->start (urxvt::NOW) 1112 ->interval (1)
403 ->cb (sub { 1113 ->cb (sub {
404 my ($timer) = @_;
405 my $time = $timer->at;
406 $timer->start ($time + 1);
407 $self->scr_overlay (-1, 0, 1114 $term->{overlay}->set (0, 0,
408 POSIX::strftime "%H:%M:%S", localtime $time); 1115 sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
409 }); 1116 });
410 1117
411=over 4 1118=over 4
412 1119
413=item $timer = new urxvt::timer 1120=item $timer = new urxvt::timer
414 1121
415Create a new timer object in stopped state. 1122Create a new timer object in started state. It is scheduled to fire
1123immediately.
416 1124
417=item $timer = $timer->cb (sub { my ($timer) = @_; ... }) 1125=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
418 1126
419Set the callback to be called when the timer triggers. 1127Set the callback to be called when the timer triggers.
420 1128
423Return the time this watcher will fire next. 1131Return the time this watcher will fire next.
424 1132
425=item $timer = $timer->set ($tstamp) 1133=item $timer = $timer->set ($tstamp)
426 1134
427Set the time the event is generated to $tstamp. 1135Set the time the event is generated to $tstamp.
1136
1137=item $timer = $timer->interval ($interval)
1138
1139Normally (and when C<$interval> is C<0>), the timer will automatically
1140stop after it has fired once. If C<$interval> is non-zero, then the timer
1141is automatically rescheduled at the given intervals.
428 1142
429=item $timer = $timer->start 1143=item $timer = $timer->start
430 1144
431Start the timer. 1145Start the timer.
432 1146
495This variable controls the verbosity level of the perl extension. Higher 1209This variable controls the verbosity level of the perl extension. Higher
496numbers indicate more verbose output. 1210numbers indicate more verbose output.
497 1211
498=over 4 1212=over 4
499 1213
500=item 0 - only fatal messages 1214=item =0 - only fatal messages
501 1215
502=item 3 - script loading and management 1216=item =3 - script loading and management
503 1217
504=item 10 - all events received 1218=item =10 - all events received
505 1219
506=back 1220=back
507 1221
508=head1 AUTHOR 1222=head1 AUTHOR
509 1223

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