[ViewVC] Diff of: cvs/rxvt-unicode/src/urxvt.pm

Comparing rxvt-unicode/src/urxvt.pm (file contents):
Revision 1.3 by root, Mon Jan 2 15:59:25 2006 UTC vs.
Revision 1.39 by root, Fri Jan 6 05:28:55 2006 UTC

…		…
		1	=encoding utf8
		2
1	=head1 NAME	3	=head1 NAME
2		4
3	rxvtperl - 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	* Put your scripts into F<@@RXVT_LIBDIR@@/urxvt/perl-ext/>, they will be loaded automatically.	9	# create a file grab_test in $HOME:
8
9	* Each script will only be loaded once, even in urxvtd, and will be valid
10	globally.
11
12	* Scripts are evaluated in a 'use strict' and 'use utf8' environment, and
13	thus must be encoded as UTF-8.
14		10
15	sub on_sel_grab {	11	sub on_sel_grab {
16	warn "you selected ", $_[0]->selection;	12	warn "you selected ", $_[0]->selection;
17	()	13	()
18	}	14	}
19		15
20	1	16	# start a @@RXVT_NAME@@ using it:
		17
		18	@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
21		19
22	=head1 DESCRIPTION	20	=head1 DESCRIPTION
23		21
		22	Everytime a terminal object gets created, scripts specified via the
		23	C<perl> resource are loaded and associated with it.
		24
		25	Scripts are compiled in a 'use strict' and 'use utf8' environment, and
		26	thus must be encoded as UTF-8.
		27
		28	Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
		29	scripts will be shared (but not enabled) for all terminals.
		30
		31	=head2 Prepackaged Extensions
		32
		33	This section describes the extensiosn delivered with this version. You can
		34	find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>.
		35
		36	You can activate them like this:
		37
		38	@@RXVT_NAME@@ -pe <extensionname>
		39
		40	=over 4
		41
		42	=item selection
		43
		44	Intelligent selection. This extension tries to be more intelligent when
		45	the user extends selections (double-click). Right now, it tries to select
		46	urls and complete shell-quoted arguments, which is very convenient, too,
		47	if your F<ls> supports C<--quoting-style=shell>.
		48
		49	It also offers the following bindable event:
		50
		51	=over 4
		52
		53	=item rot13
		54
		55	Rot-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
		63	Displays a digital clock using the built-in overlay.
		64
		65	=item mark-urls
		66
		67	Uses per-line filtering (C<on_line_update>) to underline urls.
		68
		69	=item example-refresh-hooks
		70
		71	Displays a very simple digital clock in the upper right corner of the
		72	window. Illustrates overwriting the refresh callbacks to create your own
		73	overlays or changes.
		74
		75	=item example-filter-input
		76
		77	A not very useful example of filtering all text output to the terminal, by
		78	underlining all urls that matches a certain regex (i.e. some urls :). It
		79	is not very useful because urls that are output in multiple steps (e.g.
		80	when typing them) do not get marked.
		81
		82	=back
		83
		84	=head2 General API Considerations
		85
		86	All objects (such as terminals, time watchers etc.) are typical
		87	reference-to-hash objects. The hash can be used to store anything you
		88	like. All members starting with an underscore (such as C<_ptr> or
		89	C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or
		90	modified).
		91
		92	When objects are destroyed on the C++ side, the perl object hashes are
		93	emptied, so its best to store related objects such as time watchers and
		94	the like inside the terminal object so they get destroyed as soon as the
		95	terminal is destroyed.
		96
		97	Argument names also often indicate the type of a parameter. Here are some
		98	hints on what they mean:
		99
		100	=over 4
		101
		102	=item $text
		103
		104	Rxvt-unicodes special way of encoding text, where one "unicode" character
		105	always represents one screen cell. See L<row_t> for a discussion of this format.
		106
		107	=item $string
		108
		109	A perl text string, with an emphasis on I<text>. It can store all unicode
		110	characters and is to be distinguished with text encoded in a specific
		111	encoding (often locale-specific) and binary data.
		112
		113	=item $octets
		114
		115	Either binary data or - more common - a text string encoded in a
		116	locale-specific way.
		117
		118	=back
		119
24	=head2 Hooks	120	=head2 Hooks
25		121
26	The following subroutines can be declared in loaded scripts, and will be called	122	The following subroutines can be declared in loaded scripts, and will be
27	whenever the relevant event happens.	123	called whenever the relevant event happens.
		124
		125	The first argument passed to them is an object private to each terminal
		126	and extension package. You can call all C<urxvt::term> methods on it, but
		127	its not a real C<urxvt::term> object. Instead, the real C<urxvt::term>
		128	object that is shared between all packages is stored in the C<term>
		129	member.
28		130
29	All of them must return a boolean value. If it is true, then the event	131	All of them must return a boolean value. If it is true, then the event
30	counts as being I<consumed>, and the invocation of other hooks is skipped,	132	counts as being I<consumed>, and the invocation of other hooks is skipped,
31	and the relevant action might not be carried out by the C++ code.	133	and the relevant action might not be carried out by the C++ code.
32		134
35	=over 4	137	=over 4
36		138
37	=item on_init $term	139	=item on_init $term
38		140
39	Called after a new terminal object has been initialized, but before	141	Called after a new terminal object has been initialized, but before
40	windows are created or the command gets run.	142	windows are created or the command gets run. Most methods are unsafe to
		143	call or deliver senseless data, as terminal size and other characteristics
		144	have not yet been determined. You can safely query and change resources,
		145	though.
41		146
42	=item on_reset $term	147	=item on_reset $term
43		148
44	Called after the screen is "reset" for any reason, such as resizing or	149	Called after the screen is "reset" for any reason, such as resizing or
45	control sequences. Here is where you can react on changes to size-related	150	control sequences. Here is where you can react on changes to size-related
…		…
65	requested from the server. The selection text can be queried and changed	170	requested from the server. The selection text can be queried and changed
66	by calling C<< $term->selection >>.	171	by calling C<< $term->selection >>.
67		172
68	Returning a true value aborts selection grabbing. It will still be hilighted.	173	Returning a true value aborts selection grabbing. It will still be hilighted.
69		174
		175	=item on_sel_extend $term
		176
		177	Called whenever the user tries to extend the selection (e.g. with a double
		178	click) and is either supposed to return false (normal operation), or
		179	should extend the selection itelf and return true to suppress the built-in
		180	processing.
		181
		182	See the F<selection> example extension.
		183
70	=item on_focus_in $term	184	=item on_focus_in $term
71		185
72	Called whenever the window gets the keyboard focus, before urxvt does	186	Called whenever the window gets the keyboard focus, before urxvt does
73	focus in processing.	187	focus in processing.
74		188
…		…
94	number of lines that will be in the scrollback buffer.	208	number of lines that will be in the scrollback buffer.
95		209
96	=item on_tty_activity $term NYI	210	=item on_tty_activity $term NYI
97		211
98	Called whenever the program(s) running in the urxvt window send output.	212	Called whenever the program(s) running in the urxvt window send output.
		213
		214	=item on_osc_seq $term, $string
		215
		216	Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC =
		217	operating system command) is processed. Cursor position and other state
		218	information is up-to-date when this happens. For interoperability, the
		219	string should start with the extension name and a colon, to distinguish
		220	it from commands for other extensions, and this might be enforced in the
		221	future.
		222
		223	Be careful not ever to trust (in a security sense) the data you receive,
		224	as its source can not easily be controleld (e-mail content, messages from
		225	other users on the same system etc.).
		226
		227	=item on_add_lines $term, $string
		228
		229	Called whenever text is about to be output, with the text as argument. You
		230	can filter/change and output the text yourself by returning a true value
		231	and calling C<< $term->scr_add_lines >> yourself. Please note that this
		232	might be very slow, however, as your hook is called for B<all> text being
		233	output.
		234
		235	=item on_line_update $term, $row
		236
		237	Called whenever a line was updated or changed. Can be used to filter
		238	screen output (e.g. underline urls or other useless stuff). Only lines
		239	that are being shown will be filtered, and, due to performance reasons,
		240	not always immediately.
		241
		242	The row number is always the topmost row of the line if the line spans
		243	multiple rows.
		244
		245	Please note that, if you change the line, then the hook might get called
		246	later with the already-modified line (e.g. if unrelated parts change), so
		247	you cannot just toggle rendition bits, but only set them.
99		248
100	=item on_refresh_begin $term	249	=item on_refresh_begin $term
101		250
102	Called just before the screen gets redrawn. Can be used for overlay	251	Called just before the screen gets redrawn. Can be used for overlay
103	or similar effects by modify terminal contents in refresh_begin, and	252	or similar effects by modify terminal contents in refresh_begin, and
…		…
106		255
107	=item on_refresh_end $term	256	=item on_refresh_end $term
108		257
109	Called just after the screen gets redrawn. See C<on_refresh_begin>.	258	Called just after the screen gets redrawn. See C<on_refresh_begin>.
110		259
		260	=item on_keyboard_command $term, $string
		261
		262	Called whenever the user presses a key combination that has a
		263	C<perl:string> action bound to it (see description of the B<keysym>
		264	resource in the @@RXVT_NAME@@(1) manpage).
		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	Called whenever the corresponding X event is received for the terminal If
		277	the hook returns true, then the even will be ignored by rxvt-unicode.
		278
		279	The event is a hash with most values as named by Xlib (see the XEvent
		280	manpage), with the additional members C<row> and C<col>, which are the row
		281	and column under the mouse cursor.
		282
		283	C<on_key_press> additionally receives the string rxvt-unicode would
		284	output, if any, in locale-specific encoding.
		285
		286	subwindow.
		287
		288	=back
		289
		290	=head2 Variables in the C<urxvt> Package
		291
		292	=over 4
		293
		294	=item $urxvt::TERM
		295
		296	The current terminal. Whenever a callback/Hook is bein executed, this
		297	variable stores the current C<urxvt::term> object.
		298
111	=back	299	=back
112		300
113	=head2 Functions in the C<urxvt> Package	301	=head2 Functions in the C<urxvt> Package
114		302
115	=over 4	303	=over 4
		304
		305	=item $term = new urxvt [arg...]
		306
		307	Creates a new terminal, very similar as if you had started it with
		308	C<system $binfile, arg...>. Croaks (and probably outputs an error message)
		309	if the new instance couldn't be created. Returns C<undef> if the new
		310	instance didn't initialise perl, and the terminal object otherwise. The
		311	C<init> and C<start> hooks will be called during the call.
116		312
117	=item urxvt::fatal $errormessage	313	=item urxvt::fatal $errormessage
118		314
119	Fatally aborts execution with the given error message. Avoid at all	315	Fatally aborts execution with the given error message. Avoid at all
120	costs! The only time this is acceptable is when the terminal process	316	costs! The only time this is acceptable is when the terminal process
121	starts up.	317	starts up.
122		318
123	=item urxvt::warn $string	319	=item urxvt::warn $string
124		320
125	Calls C<rxvt_warn> witht eh given string which should not include a	321	Calls C<rxvt_warn> with the given string which should not include a
126	newline. The module also overwrites the C<warn> builtin with a function	322	newline. The module also overwrites the C<warn> builtin with a function
127	that calls this function.	323	that calls this function.
128		324
129	Using this function has the advantage that its output ends up in the	325	Using this function has the advantage that its output ends up in the
130	correct place, e.g. on stderr of the connecting urxvtc client.	326	correct place, e.g. on stderr of the connecting urxvtc client.
131		327
132	=item $cellwidth = urxvt::wcswidth $string
133
134	Returns the number of screen-cells this string would need. Correctly
135	accounts for wide and combining characters.
136
137	=item $time = urxvt::NOW	328	=item $time = urxvt::NOW
138		329
139	Returns the "current time" (as per the event loop).	330	Returns the "current time" (as per the event loop).
140		331
		332	=back
		333
		334	=head2 RENDITION
		335
		336	Rendition bitsets contain information about colour, font, font styles and
		337	similar information for each screen cell.
		338
		339	The following "macros" deal with changes in rendition sets. You should
		340	never just create a bitset, you should always modify an existing one,
		341	as they contain important information required for correct operation of
		342	rxvt-unicode.
		343
		344	=over 4
		345
		346	=item $rend = urxvt::DEFAULT_RSTYLE
		347
		348	Returns the default rendition, as used when the terminal is starting up or
		349	being reset. Useful as a base to start when creating renditions.
		350
		351	=item $rend = urxvt::OVERLAY_RSTYLE
		352
		353	Return the rendition mask used for overlays by default.
		354
		355	=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
		356
		357	Return the bit that enabled bold, italic, blink, reverse-video and
		358	underline, respectively. To enable such a style, just logically OR it into
		359	the bitset.
		360
		361	=item $foreground = urxvt::GET_BASEFG $rend
		362
		363	=item $background = urxvt::GET_BASEBG $rend
		364
		365	Return the foreground/background colour index, respectively.
		366
		367	=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)
		368
		369	=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)
		370
		371	Replace the foreground/background colour in the rendition mask with the
		372	specified one.
		373
		374	=item $value = urxvt::GET_CUSTOM ($rend)
		375
		376	Return the "custom" value: Every rendition has 5 bits for use by
		377	extensions. They can be set and changed as you like and are initially
		378	zero.
		379
		380	=item $rend = urxvt::SET_CUSTOM ($rend, $new_value)
		381
		382	Change the custom value.
		383
		384	=back
		385
141	=cut	386	=cut
142		387
143	package urxvt;	388	package urxvt;
144		389
145	use strict;	390	use strict;
		391	use Scalar::Util ();
146		392
147	our $term;	393	our $TERM;
148	our @HOOKNAME;	394	our @HOOKNAME;
149	our $LIBDIR;	395	our $LIBDIR;
150		396
151	BEGIN {	397	BEGIN {
152	urxvt->bootstrap;	398	urxvt->bootstrap;
…		…
158	unless $msg =~ /\n$/;	404	unless $msg =~ /\n$/;
159	urxvt::warn ($msg);	405	urxvt::warn ($msg);
160	};	406	};
161	}	407	}
162		408
		409	my @hook_count;
163	my $verbosity = $ENV{URXVT_PERL_VERBOSITY} \|\| 10;	410	my $verbosity = $ENV{URXVT_PERL_VERBOSITY};
164		411
165	sub verbose {	412	sub verbose {
166	my ($level, $msg) = @_;	413	my ($level, $msg) = @_;
167	warn "$msg\n"; #d#	414	warn "$msg\n" if $level <= $verbosity;
168	}
169
170	my @invoke_cb;
171
172	# called by the rxvt core
173	sub invoke {
174	local $term = shift;
175	my $htype = shift;
176
177	my $cb = $invoke_cb[$htype];
178
179	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $term, @_) . ")"
180	if $verbosity >= 10;
181
182	while (my ($k, $v) = each %$cb) {
183	return 1 if $v->($term, @_);
184	}
185
186	0
187	}	415	}
188		416
189	# find on_xxx subs in the package and register them	417	# find on_xxx subs in the package and register them
190	# as hooks	418	# as hooks
191	sub register_package($) {	419	sub register_package($) {
192	my ($pkg) = @_;	420	my ($pkg) = @_;
193		421
194	for my $hook (0.. $#HOOKNAME) {	422	for my $htype (0.. $#HOOKNAME) {
195	my $name = $HOOKNAME[$hook];	423	my $name = $HOOKNAME[$htype];
196		424
197	my $ref = $pkg->can ("on_" . lc $name)	425	my $ref = $pkg->can ("on_" . lc $name)
198	or next;	426	or next;
199		427
200	$invoke_cb[$hook]{$ref*1} = $ref;	428	$TERM->{_hook}[$htype]{$pkg} = $ref;
		429	$hook_count[$htype]++
201	set_should_invoke $hook, 1;	430	or set_should_invoke $htype, 1;
202	}	431	}
203	}	432	}
204		433
205	my $script_pkg = "script0000";	434	my $script_pkg = "script0000";
206	my %script_pkg;	435	my %script_pkg;
207		436
208	# load a single script into its own package, once only	437	# load a single script into its own package, once only
209	sub load_script($) {	438	sub script_package($) {
210	my ($path) = @_;	439	my ($path) = @_;
211		440
212	$script_pkg{$path} \|\|= do {	441	$script_pkg{$path} \|\|= do {
213	my $pkg = $script_pkg++;	442	my $pkg = "urxvt::" . ($script_pkg++);
		443
214	verbose 3, "loading script '$path' into package '$pkg'";	444	verbose 3, "loading script '$path' into package '$pkg'";
215		445
216	open my $fh, "<:raw", $path	446	open my $fh, "<:raw", $path
217	or die "$path: $!";	447	or die "$path: $!";
218		448
219	eval "package $pkg; use strict; use utf8;\n"	449	my $source = "package $pkg; use strict; use utf8;\n"
220	. "#line 1 \"$path\"\n"	450	. "#line 1 \"$path\"\n{\n"
221	. do { local $/; <$fh> }	451	. (do { local $/; <$fh> })
		452	. "\n};\n1";
		453
222	or die "$path: $@";	454	eval $source or die "$path: $@";
223
224	register_package $pkg;
225		455
226	$pkg	456	$pkg
227	};	457	}
228	}	458	}
229		459
230	load_script $_ for grep -f $_, <$LIBDIR/perl-ext/*>;	460	our $retval; # return value for urxvt
231		461
		462	# called by the rxvt core
		463	sub invoke {
		464	local $TERM = shift;
		465	my $htype = shift;
232		466
233	=back	467	if ($htype == 0) { # INIT
		468	my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl");
		469
		470	for my $ext (map { split /:/, $TERM->resource ("perl_ext_$_") } 1, 2) {
		471	my @files = grep -f $_, map "$_/$ext", @dirs;
		472
		473	if (@files) {
		474	register_package script_package $files[0];
		475	} else {
		476	warn "perl extension '$ext' not found in perl library search path\n";
		477	}
		478	}
		479	}
		480
		481	$retval = undef;
		482
		483	if (my $cb = $TERM->{_hook}[$htype]) {
		484	verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")"
		485	if $verbosity >= 10;
		486
		487	keys %$cb;
		488
		489	while (my ($pkg, $cb) = each %$cb) {
		490	$retval = $cb->(
		491	$TERM->{_pkg}{$pkg} \|\|= do {
		492	my $proxy = bless { }, urxvt::term::proxy::;
		493	Scalar::Util::weaken ($proxy->{term} = $TERM);
		494	$proxy
		495	},
		496	@_,
		497	) and last;
		498	}
		499	}
		500
		501	if ($htype == 1) { # DESTROY
		502	# remove hooks if unused
		503	if (my $hook = $TERM->{_hook}) {
		504	for my $htype (0..$#$hook) {
		505	$hook_count[$htype] -= scalar keys %{ $hook->[$htype] \|\| {} }
		506	or set_should_invoke $htype, 0;
		507	}
		508	}
		509
		510	# clear package objects
		511	%$_ = () for values %{ $TERM->{_pkg} };
		512
		513	# clear package
		514	%$TERM = ();
		515	}
		516
		517	$retval
		518	}
		519
		520	sub urxvt::term::proxy::AUTOLOAD {
		521	$urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/
		522	or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable";
		523
		524	eval qq{
		525	sub $urxvt::term::proxy::AUTOLOAD {
		526	my \$proxy = shift;
		527	\$proxy->{term}->$1 (\@_)
		528	}
		529	1
		530	} or die "FATAL: unable to compile method forwarder: $@";
		531
		532	goto &$urxvt::term::proxy::AUTOLOAD;
		533	}
234		534
235	=head2 The C<urxvt::term> Class	535	=head2 The C<urxvt::term> Class
236		536
237	=over 4	537	=over 4
		538
		539	=item $term->destroy
		540
		541	Destroy the terminal object (close the window, free resources etc.).
		542
		543	=item $value = $term->resource ($name[, $newval])
		544
		545	Returns the current resource value associated with a given name and
		546	optionally sets a new value. Setting values is most useful in the C<init>
		547	hook. Unset resources are returned and accepted as C<undef>.
		548
		549	The new value must be properly encoded to a suitable character encoding
		550	before passing it to this method. Similarly, the returned value may need
		551	to be converted from the used encoding to text.
		552
		553	Resource names are as defined in F<src/rsinc.h>. Colours can be specified
		554	as resource names of the form C<< color+<index> >>, e.g. C<color+5>. (will
		555	likely change).
		556
		557	Please note that resource strings will currently only be freed when the
		558	terminal is destroyed, so changing options frequently will eat memory.
		559
		560	Here is a a likely non-exhaustive list of resource names, not all of which
		561	are supported in every build, please see the source to see the actual
		562	list:
		563
		564	answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
		565	borderLess color cursorBlink cursorUnderline cutchars delete_key
		566	display_name embed ext_bwidth fade font geometry hold iconName
		567	imFont imLocale inputMethod insecure int_bwidth intensityStyles
		568	italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
		569	mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
		570	perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
		571	reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
		572	scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
		573	scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
		574	shade term_name title transparent transparent_all tripleclickwords
		575	utmpInhibit visualBell
		576
		577	=cut
		578
		579	sub urxvt::term::resource($$;$) {
		580	my ($self, $name) = (shift, shift);
		581	unshift @_, $self, $name, ($name =~ s/\s\+\s(\d+)$// ? $1 : 0);
		582	goto &urxvt::term::_resource;
		583	}
		584
		585	=item $rend = $term->rstyle ([$new_rstyle])
		586
		587	Return and optionally change the current rendition. Text that is output by
		588	the terminal application will use this style.
		589
		590	=item ($row, $col) = $term->screen_cur ([$row, $col])
		591
		592	Return the current coordinates of the text cursor position and optionally
		593	set it (which is usually bad as applications don't expect that).
238		594
239	=item ($row, $col) = $term->selection_mark ([$row, $col])	595	=item ($row, $col) = $term->selection_mark ([$row, $col])
240		596
241	=item ($row, $col) = $term->selection_beg ([$row, $col])	597	=item ($row, $col) = $term->selection_beg ([$row, $col])
242		598
…		…
252		608
253	=item $oldtext = $term->selection ([$newtext])	609	=item $oldtext = $term->selection ([$newtext])
254		610
255	Return the current selection text and optionally replace it by C<$newtext>.	611	Return the current selection text and optionally replace it by C<$newtext>.
256		612
257	=item $term->scr_overlay ($x, $y, $text)	613	#=item $term->overlay ($x, $y, $text)
258		614	#
259	Create a simple multi-line overlay box. See the next method for details.	615	#Create a simple multi-line overlay box. See the next method for details.
		616	#
		617	#=cut
		618	#
		619	#sub urxvt::term::scr_overlay {
		620	# my ($self, $x, $y, $text) = @_;
		621	#
		622	# my @lines = split /\n/, $text;
		623	#
		624	# my $w = 0;
		625	# for (map $self->strwidth ($_), @lines) {
		626	# $w = $_ if $w < $_;
		627	# }
		628	#
		629	# $self->scr_overlay_new ($x, $y, $w, scalar @lines);
		630	# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
		631	#}
		632
		633	=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
		634
		635	Create a new (empty) overlay at the given position with the given
		636	width/height. C<$rstyle> defines the initial rendition style
		637	(default: C<OVERLAY_RSTYLE>).
		638
		639	If C<$border> is C<2> (default), then a decorative border will be put
		640	around the box.
		641
		642	If either C<$x> or C<$y> is negative, then this is counted from the
		643	right/bottom side, respectively.
		644
		645	This method returns an urxvt::overlay object. The overlay will be visible
		646	as long as the perl object is referenced.
		647
		648	The methods currently supported on C<urxvt::overlay> objects are:
		649
		650	=over 4
		651
		652	=item $overlay->set ($x, $y, $text, $rend)
		653
		654	Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts
		655	text in rxvt-unicode's special encoding and an array of rendition values
		656	at a specific position inside the overlay.
		657
		658	=item $overlay->hide
		659
		660	If visible, hide the overlay, but do not destroy it.
		661
		662	=item $overlay->show
		663
		664	If hidden, display the overlay again.
		665
		666	=back
		667
		668	=item $cellwidth = $term->strwidth $string
		669
		670	Returns the number of screen-cells this string would need. Correctly
		671	accounts for wide and combining characters.
		672
		673	=item $octets = $term->locale_encode $string
		674
		675	Convert the given text string into the corresponding locale encoding.
		676
		677	=item $string = $term->locale_decode $octets
		678
		679	Convert the given locale-encoded octets into a perl string.
		680
		681	=item $term->scr_add_lines ($string)
		682
		683	Write the given text string to the screen, as if output by the application
		684	running inside the terminal. It may not contain command sequences (escape
		685	codes), but is free to use line feeds, carriage returns and tabs. The
		686	string is a normal text string, not in locale-dependent encoding.
		687
		688	Normally its not a good idea to use this function, as programs might be
		689	confused by changes in cursor position or scrolling. Its useful inside a
		690	C<on_add_lines> hook, though.
		691
		692	=item $term->cmd_parse ($octets)
		693
		694	Similar to C<scr_add_lines>, but the argument must be in the
		695	locale-specific encoding of the terminal and can contain command sequences
		696	(escape codes) that will be interpreted.
		697
		698	=item $term->tt_write ($octets)
		699
		700	Write the octets given in C<$data> to the tty (i.e. as program input). To
		701	pass characters instead of octets, you should convert your strings first
		702	to the locale-specific encoding using C<< $term->locale_encode >>.
		703
		704	=item $window_width = $term->width
		705
		706	=item $window_height = $term->height
		707
		708	=item $font_width = $term->fwidth
		709
		710	=item $font_height = $term->fheight
		711
		712	=item $font_ascent = $term->fbase
		713
		714	=item $terminal_rows = $term->nrow
		715
		716	=item $terminal_columns = $term->ncol
		717
		718	=item $has_focus = $term->focus
		719
		720	=item $is_mapped = $term->mapped
		721
		722	=item $max_scrollback = $term->saveLines
		723
		724	=item $nrow_plus_saveLines = $term->total_rows
		725
		726	=item $lines_in_scrollback = $term->nsaved
		727
		728	Return various integers describing terminal characteristics.
		729
		730	=item $view_start = $term->view_start ([$newvalue])
		731
		732	Returns the negative row number of the topmost line. Minimum value is
		733	C<0>, which displays the normal terminal contents. Larger values scroll
		734	this many lines into the scrollback buffer.
		735
		736	=item $term->want_refresh
		737
		738	Requests a screen refresh. At the next opportunity, rxvt-unicode will
		739	compare the on-screen display with its stored representation. If they
		740	differ, it redraws the differences.
		741
		742	Used after changing terminal contents to display them.
		743
		744	=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
		745
		746	Returns the text of the entire row with number C<$row_number>. Row C<0>
		747	is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost
		748	terminal line. The scrollback buffer starts at line C<-1> and extends to
		749	line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line
		750	is requested.
		751
		752	If C<$new_text> is specified, it will replace characters in the current
		753	line, starting at column C<$start_col> (default C<0>), which is useful
		754	to replace only parts of a line. The font index in the rendition will
		755	automatically be updated.
		756
		757	C<$text> is in a special encoding: tabs and wide characters that use more
		758	than one cell when displayed are padded with urxvt::NOCHAR characters
		759	(C<chr 65535>). Characters with combining characters and other characters
		760	that do not fit into the normal tetx encoding will be replaced with
		761	characters in the private use area.
		762
		763	You have to obey this encoding when changing text. The advantage is
		764	that C<substr> and similar functions work on screen cells and not on
		765	characters.
		766
		767	The methods C<< $term->special_encode >> and C<< $term->special_decode >>
		768	can be used to convert normal strings into this encoding and vice versa.
		769
		770	=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
		771
		772	Like C<< $term->ROW_t >>, but returns an arrayref with rendition
		773	bitsets. Rendition bitsets contain information about colour, font, font
		774	styles and similar information. See also C<< $term->ROW_t >>.
		775
		776	When setting rendition, the font mask will be ignored.
		777
		778	See the section on RENDITION, above.
		779
		780	=item $length = $term->ROW_l ($row_number[, $new_length])
		781
		782	Returns the number of screen cells that are in use ("the line
		783	length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the
		784	line is joined with the following one.
		785
		786	=item $bool = $term->is_longer ($row_number)
		787
		788	Returns true if the row is part of a multiple-row logical "line" (i.e.
		789	joined with the following row), which means all characters are in use
		790	and it is continued on the next row (and possibly a continuation of the
		791	previous row(s)).
		792
		793	=item $line = $term->line ($row_number)
		794
		795	Create and return a new C<urxvt::line> object that stores information
		796	about the logical line that row C<$row_number> is part of. It supports the
		797	following methods:
		798
		799	=over 4
		800
		801	=item $text = $line->t ([$new_text])
		802
		803	Returns or replaces the full text of the line, similar to C<ROW_t>
		804
		805	=item $rend = $line->r ([$new_rend])
		806
		807	Returns or replaces the full rendition array of the line, similar to C<ROW_r>
		808
		809	=item $length = $line->l
		810
		811	Returns the length of the line in cells, similar to C<ROW_l>.
		812
		813	=item $rownum = $line->beg
		814
		815	=item $rownum = $line->end
		816
		817	Return the row number of the first/last row of the line, respectively.
		818
		819	=item $offset = $line->offset_of ($row, $col)
		820
		821	Returns the character offset of the given row\|col pair within the logical
		822	line.
		823
		824	=item ($row, $col) = $line->coord_of ($offset)
		825
		826	Translates a string offset into terminal coordinates again.
		827
		828	=back
260		829
261	=cut	830	=cut
262		831
263	sub urxvt::term::scr_overlay {	832	sub urxvt::term::line {
264	my ($self, $x, $y, $text) = @_;	833	my ($self, $row) = @_;
265		834
266	my @lines = split /\n/, $text;	835	my $maxrow = $self->nrow - 1;
267		836
268	my $w = 0;	837	my ($beg, $end) = ($row, $row);
269	for (map urxvt::wcswidth $_, @lines) {	838
270	$w = $_ if $w < $_;	839	--$beg while $self->ROW_is_longer ($beg - 1);
		840	++$end while $self->ROW_is_longer ($end) && $end < $maxrow;
		841
		842	bless {
		843	term => $self,
		844	beg => $beg,
		845	end => $end,
		846	ncol => $self->ncol,
		847	len => ($end - $beg) * $self->ncol + $self->ROW_l ($end),
		848	}, urxvt::line::
		849	}
		850
		851	sub urxvt::line::t {
		852	my ($self) = @_;
		853
		854	if (@_ > 1)
		855	{
		856	$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		857	for $self->{beg} .. $self->{end};
		858	}
		859
		860	defined wantarray &&
		861	substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}),
		862	0, $self->{len}
		863	}
		864
		865	sub urxvt::line::r {
		866	my ($self) = @_;
		867
		868	if (@_ > 1)
		869	{
		870	$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol})
		871	for $self->{beg} .. $self->{end};
		872	}
		873
		874	if (defined wantarray) {
		875	my $rend = [
		876	map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end}
		877	];
		878	$#$rend = $self->{len} - 1;
		879	return $rend;
271	}	880	}
272		881
273	$self->scr_overlay_new ($x, $y, $w, scalar @lines);	882	()
274	$self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
275	}	883	}
276		884
277	=item $term->scr_overlay_new ($x, $y, $width, $height)	885	sub urxvt::line::beg { $_[0]{beg} }
		886	sub urxvt::line::end { $_[0]{end} }
		887	sub urxvt::line::l { $_[0]{len} }
278		888
279	Create a new (empty) overlay at the given position with the given	889	sub urxvt::line::offset_of {
280	width/height. A border will be put around the box. If either C<$x> or	890	my ($self, $row, $col) = @_;
281	C<$y> is negative, then this is counted from the right/bottom side,
282	respectively.
283		891
284	=item $term->scr_overlay_off	892	($row - $self->{beg}) * $self->{ncol} + $col
		893	}
285		894
286	Switch the overlay off again.	895	sub urxvt::line::coord_of {
		896	my ($self, $offset) = @_;
287		897
288	=item $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)	898	use integer;
289		899
290	Put a single character (specified numerically) at the given overlay	900	(
291	position.	901	$offset / $self->{ncol} + $self->{beg},
		902	$offset % $self->{ncol}
		903	)
		904	}
292		905
293	=item $term->scr_overlay_set ($x, $y, $text)	906	=item ($row, $col) = $line->coord_of ($offset)
		907	=item $text = $term->special_encode $string
294		908
295	Write a string at the given position into the overlay.	909	Converts a perl string into the special encoding used by rxvt-unicode,
		910	where one character corresponds to one screen cell. See
		911	C<< $term->ROW_t >> for details.
		912
		913	=item $string = $term->special_decode $text
		914
		915	Converts rxvt-unicodes text reprsentation into a perl string. See
		916	C<< $term->ROW_t >> for details.
296		917
297	=back	918	=back
298		919
299	=head2 The C<urxvt::timer> Class	920	=head2 The C<urxvt::timer> Class
300		921
301	This class implements timer watchers/events. Time is represented as a	922	This class implements timer watchers/events. Time is represented as a
302	fractional number of seconds since the epoch. Example:	923	fractional number of seconds since the epoch. Example:
303		924
304	# create a digital clock display in upper right corner	925	$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
305	$term->{timer} = urxvt::timer	926	$term->{timer} = urxvt::timer
306	->new	927	->new
307	->start (urxvt::NOW)	928	->interval (1)
308	->cb (sub {	929	->cb (sub {
309	my ($timer) = @_;
310	my $time = $timer->at;
311	$timer->start ($time + 1);
312	$self->scr_overlay (-1, 0,	930	$term->{overlay}->set (0, 0,
313	POSIX::strftime "%H:%M:%S", localtime $time);	931	sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
314	});	932	});
315		933
316	=over 4	934	=over 4
317		935
318	=item $timer = new urxvt::timer	936	=item $timer = new urxvt::timer
319		937
320	Create a new timer object in stopped state.	938	Create a new timer object in started state. It is scheduled to fire
		939	immediately.
321		940
322	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })	941	=item $timer = $timer->cb (sub { my ($timer) = @_; ... })
323		942
324	Set the callback to be called when the timer triggers.	943	Set the callback to be called when the timer triggers.
325		944
…		…
328	Return the time this watcher will fire next.	947	Return the time this watcher will fire next.
329		948
330	=item $timer = $timer->set ($tstamp)	949	=item $timer = $timer->set ($tstamp)
331		950
332	Set the time the event is generated to $tstamp.	951	Set the time the event is generated to $tstamp.
		952
		953	=item $timer = $timer->interval ($interval)
		954
		955	Normally (and when C<$interval> is C<0>), the timer will automatically
		956	stop after it has fired once. If C<$interval> is non-zero, then the timer
		957	is automatically rescheduled at the given intervals.
333		958
334	=item $timer = $timer->start	959	=item $timer = $timer->start
335		960
336	Start the timer.	961	Start the timer.
337		962
…		…
391		1016
392	Stop watching for events on the given filehandle.	1017	Stop watching for events on the given filehandle.
393		1018
394	=back	1019	=back
395		1020
		1021	=head1 ENVIRONMENT
		1022
		1023	=head2 URXVT_PERL_VERBOSITY
		1024
		1025	This variable controls the verbosity level of the perl extension. Higher
		1026	numbers indicate more verbose output.
		1027
		1028	=over 4
		1029
		1030	=item =0 - only fatal messages
		1031
		1032	=item =3 - script loading and management
		1033
		1034	=item =10 - all events received
		1035
		1036	=back
		1037
396	=head1 AUTHOR	1038	=head1 AUTHOR
397		1039
398	Marc Lehmann <pcg@goof.com>	1040	Marc Lehmann <pcg@goof.com>
399	http://software.schmorp.de/pkg/rxvt-unicode	1041	http://software.schmorp.de/pkg/rxvt-unicode
400		1042

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Comparing rxvt-unicode/src/urxvt.pm (file contents): Revision 1.3 by root, Mon Jan 2 15:59:25 2006 UTC vs. Revision 1.39 by root, Fri Jan 6 05:28:55 2006 UTC

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Comparing rxvt-unicode/src/urxvt.pm (file contents):
Revision 1.3 by root, Mon Jan 2 15:59:25 2006 UTC vs.
Revision 1.39 by root, Fri Jan 6 05:28:55 2006 UTC