1 |
=encoding utf8 |
2 |
|
3 |
=head1 NAME |
4 |
|
5 |
@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter |
6 |
|
7 |
=head1 SYNOPSIS |
8 |
|
9 |
# create a file grab_test in $HOME: |
10 |
|
11 |
sub on_sel_grab { |
12 |
warn "you selected ", $_[0]->selection; |
13 |
() |
14 |
} |
15 |
|
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# start a @@RXVT_NAME@@ using it: |
17 |
|
18 |
@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test |
19 |
|
20 |
=head1 DESCRIPTION |
21 |
|
22 |
Everytime a terminal object gets created, extension scripts specified via |
23 |
the 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 |
|
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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 |
|
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You can activate them like this: |
37 |
|
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@@RXVT_NAME@@ -pe <extensionname> |
39 |
|
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=over 4 |
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|
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=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 |
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|
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 display filtering (C<on_line_update>) to underline urls. |
68 |
|
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=item block-graphics-to-ascii |
70 |
|
71 |
A not very useful example of filtering all text output to the terminal, |
72 |
by replacing all line-drawing characters (U+2500 .. U+259F) by a |
73 |
similar-looking ascii character. |
74 |
|
75 |
=item example-refresh-hooks |
76 |
|
77 |
Displays a very simple digital clock in the upper right corner of the |
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window. Illustrates overwriting the refresh callbacks to create your own |
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overlays or changes. |
80 |
|
81 |
=back |
82 |
|
83 |
=head2 General API Considerations |
84 |
|
85 |
All objects (such as terminals, time watchers etc.) are typical |
86 |
reference-to-hash objects. The hash can be used to store anything you |
87 |
like. All members starting with an underscore (such as C<_ptr> or |
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C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or |
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modified). |
90 |
|
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When objects are destroyed on the C++ side, the perl object hashes are |
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emptied, so its best to store related objects such as time watchers and |
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the like inside the terminal object so they get destroyed as soon as the |
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terminal is destroyed. |
95 |
|
96 |
Argument names also often indicate the type of a parameter. Here are some |
97 |
hints on what they mean: |
98 |
|
99 |
=over 4 |
100 |
|
101 |
=item $text |
102 |
|
103 |
Rxvt-unicodes special way of encoding text, where one "unicode" character |
104 |
always represents one screen cell. See L<row_t> for a discussion of this format. |
105 |
|
106 |
=item $string |
107 |
|
108 |
A perl text string, with an emphasis on I<text>. It can store all unicode |
109 |
characters and is to be distinguished with text encoded in a specific |
110 |
encoding (often locale-specific) and binary data. |
111 |
|
112 |
=item $octets |
113 |
|
114 |
Either binary data or - more common - a text string encoded in a |
115 |
locale-specific way. |
116 |
|
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=back |
118 |
|
119 |
=head2 Hooks |
120 |
|
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The following subroutines can be declared in extension files, and will be |
122 |
called whenever the relevant event happens. |
123 |
|
124 |
The first argument passed to them is an object private to each terminal |
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and extension package. You can call all C<urxvt::term> methods on it, but |
126 |
its not a real C<urxvt::term> object. Instead, the real C<urxvt::term> |
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object that is shared between all packages is stored in the C<term> |
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member. It is, however, blessed intot he package of the extension script, |
129 |
so for all practical purposes you can treat an extension script as a class. |
130 |
|
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All of them must return a boolean value. If it is true, then the event |
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counts as being I<consumed>, and the invocation of other hooks is skipped, |
133 |
and the relevant action might not be carried out by the C++ code. |
134 |
|
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When in doubt, return a false value (preferably C<()>). |
136 |
|
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=over 4 |
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|
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=item on_init $term |
140 |
|
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Called after a new terminal object has been initialized, but before |
142 |
windows are created or the command gets run. Most methods are unsafe to |
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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. |
146 |
|
147 |
=item on_reset $term |
148 |
|
149 |
Called after the screen is "reset" for any reason, such as resizing or |
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control sequences. Here is where you can react on changes to size-related |
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variables. |
152 |
|
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=item on_start $term |
154 |
|
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Called at the very end of initialisation of a new terminal, just before |
156 |
returning to the mainloop. |
157 |
|
158 |
=item on_sel_make $term, $eventtime |
159 |
|
160 |
Called whenever a selection has been made by the user, but before the |
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selection text is copied, so changes to the beginning, end or type of the |
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selection will be honored. |
163 |
|
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Returning a true value aborts selection making by urxvt, in which case you |
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have to make a selection yourself by calling C<< $term->selection_grab >>. |
166 |
|
167 |
=item on_sel_grab $term, $eventtime |
168 |
|
169 |
Called whenever a selection has been copied, but before the selection is |
170 |
requested from the server. The selection text can be queried and changed |
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by calling C<< $term->selection >>. |
172 |
|
173 |
Returning a true value aborts selection grabbing. It will still be hilighted. |
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|
175 |
=item on_sel_extend $term |
176 |
|
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Called whenever the user tries to extend the selection (e.g. with a double |
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click) and is either supposed to return false (normal operation), or |
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should extend the selection itelf and return true to suppress the built-in |
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processing. |
181 |
|
182 |
See the F<selection> example extension. |
183 |
|
184 |
=item on_view_change $term, $offset |
185 |
|
186 |
Called whenever the view offset changes, i..e the user or program |
187 |
scrolls. Offset C<0> means display the normal terminal, positive values |
188 |
show this many lines of scrollback. |
189 |
|
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=item on_scroll_back $term, $lines, $saved |
191 |
|
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Called whenever lines scroll out of the terminal area into the scrollback |
193 |
buffer. C<$lines> is the number of lines scrolled out and may be larger |
194 |
than the scroll back buffer or the terminal. |
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|
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It is called before lines are scrolled out (so rows 0 .. min ($lines - 1, |
197 |
$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total |
198 |
number of lines that will be in the scrollback buffer. |
199 |
|
200 |
=item on_tty_activity $term *NYI* |
201 |
|
202 |
Called whenever the program(s) running in the urxvt window send output. |
203 |
|
204 |
=item on_osc_seq $term, $string |
205 |
|
206 |
Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC = |
207 |
operating system command) is processed. Cursor position and other state |
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information is up-to-date when this happens. For interoperability, the |
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string should start with the extension name and a colon, to distinguish |
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it from commands for other extensions, and this might be enforced in the |
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future. |
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|
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Be careful not ever to trust (in a security sense) the data you receive, |
214 |
as its source can not easily be controleld (e-mail content, messages from |
215 |
other users on the same system etc.). |
216 |
|
217 |
=item on_add_lines $term, $string |
218 |
|
219 |
Called whenever text is about to be output, with the text as argument. You |
220 |
can filter/change and output the text yourself by returning a true value |
221 |
and calling C<< $term->scr_add_lines >> yourself. Please note that this |
222 |
might be very slow, however, as your hook is called for B<all> text being |
223 |
output. |
224 |
|
225 |
=item on_line_update $term, $row |
226 |
|
227 |
Called whenever a line was updated or changed. Can be used to filter |
228 |
screen output (e.g. underline urls or other useless stuff). Only lines |
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that are being shown will be filtered, and, due to performance reasons, |
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not always immediately. |
231 |
|
232 |
The row number is always the topmost row of the line if the line spans |
233 |
multiple rows. |
234 |
|
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Please note that, if you change the line, then the hook might get called |
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later with the already-modified line (e.g. if unrelated parts change), so |
237 |
you cannot just toggle rendition bits, but only set them. |
238 |
|
239 |
=item on_refresh_begin $term |
240 |
|
241 |
Called just before the screen gets redrawn. Can be used for overlay |
242 |
or similar effects by modify terminal contents in refresh_begin, and |
243 |
restoring them in refresh_end. The built-in overlay and selection display |
244 |
code is run after this hook, and takes precedence. |
245 |
|
246 |
=item on_refresh_end $term |
247 |
|
248 |
Called just after the screen gets redrawn. See C<on_refresh_begin>. |
249 |
|
250 |
=item on_keyboard_command $term, $string |
251 |
|
252 |
Called whenever the user presses a key combination that has a |
253 |
C<perl:string> action bound to it (see description of the B<keysym> |
254 |
resource in the @@RXVT_NAME@@(1) manpage). |
255 |
|
256 |
=item on_focus_in $term |
257 |
|
258 |
Called whenever the window gets the keyboard focus, before rxvt-unicode |
259 |
does focus in processing. |
260 |
|
261 |
=item on_focus_out $term |
262 |
|
263 |
Called wheneever the window loses keyboard focus, before rxvt-unicode does |
264 |
focus 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 |
|
280 |
Called whenever the corresponding X event is received for the terminal If |
281 |
the hook returns true, then the even will be ignored by rxvt-unicode. |
282 |
|
283 |
The event is a hash with most values as named by Xlib (see the XEvent |
284 |
manpage), with the additional members C<row> and C<col>, which are the row |
285 |
and column under the mouse cursor. |
286 |
|
287 |
C<on_key_press> additionally receives the string rxvt-unicode would |
288 |
output, if any, in locale-specific encoding. |
289 |
|
290 |
subwindow. |
291 |
|
292 |
=back |
293 |
|
294 |
=head2 Variables in the C<urxvt> Package |
295 |
|
296 |
=over 4 |
297 |
|
298 |
=item $urxvt::TERM |
299 |
|
300 |
The current terminal. This variable stores the current C<urxvt::term> |
301 |
object, whenever a callback/hook is executing. |
302 |
|
303 |
=back |
304 |
|
305 |
=head2 Functions in the C<urxvt> Package |
306 |
|
307 |
=over 4 |
308 |
|
309 |
=item $term = new urxvt [arg...] |
310 |
|
311 |
Creates a new terminal, very similar as if you had started it with |
312 |
C<system $binfile, arg...>. Croaks (and probably outputs an error message) |
313 |
if the new instance couldn't be created. Returns C<undef> if the new |
314 |
instance didn't initialise perl, and the terminal object otherwise. The |
315 |
C<init> and C<start> hooks will be called during the call. |
316 |
|
317 |
=item urxvt::fatal $errormessage |
318 |
|
319 |
Fatally aborts execution with the given error message. Avoid at all |
320 |
costs! The only time this is acceptable is when the terminal process |
321 |
starts up. |
322 |
|
323 |
=item urxvt::warn $string |
324 |
|
325 |
Calls C<rxvt_warn> with the given string which should not include a |
326 |
newline. The module also overwrites the C<warn> builtin with a function |
327 |
that calls this function. |
328 |
|
329 |
Using this function has the advantage that its output ends up in the |
330 |
correct place, e.g. on stderr of the connecting urxvtc client. |
331 |
|
332 |
=item $time = urxvt::NOW |
333 |
|
334 |
Returns the "current time" (as per the event loop). |
335 |
|
336 |
=back |
337 |
|
338 |
=head2 RENDITION |
339 |
|
340 |
Rendition bitsets contain information about colour, font, font styles and |
341 |
similar information for each screen cell. |
342 |
|
343 |
The following "macros" deal with changes in rendition sets. You should |
344 |
never just create a bitset, you should always modify an existing one, |
345 |
as they contain important information required for correct operation of |
346 |
rxvt-unicode. |
347 |
|
348 |
=over 4 |
349 |
|
350 |
=item $rend = urxvt::DEFAULT_RSTYLE |
351 |
|
352 |
Returns the default rendition, as used when the terminal is starting up or |
353 |
being reset. Useful as a base to start when creating renditions. |
354 |
|
355 |
=item $rend = urxvt::OVERLAY_RSTYLE |
356 |
|
357 |
Return the rendition mask used for overlays by default. |
358 |
|
359 |
=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline |
360 |
|
361 |
Return the bit that enabled bold, italic, blink, reverse-video and |
362 |
underline, respectively. To enable such a style, just logically OR it into |
363 |
the bitset. |
364 |
|
365 |
=item $foreground = urxvt::GET_BASEFG $rend |
366 |
|
367 |
=item $background = urxvt::GET_BASEBG $rend |
368 |
|
369 |
Return the foreground/background colour index, respectively. |
370 |
|
371 |
=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour) |
372 |
|
373 |
=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour) |
374 |
|
375 |
Replace the foreground/background colour in the rendition mask with the |
376 |
specified one. |
377 |
|
378 |
=item $value = urxvt::GET_CUSTOM ($rend) |
379 |
|
380 |
Return the "custom" value: Every rendition has 5 bits for use by |
381 |
extensions. They can be set and changed as you like and are initially |
382 |
zero. |
383 |
|
384 |
=item $rend = urxvt::SET_CUSTOM ($rend, $new_value) |
385 |
|
386 |
Change the custom value. |
387 |
|
388 |
=back |
389 |
|
390 |
=cut |
391 |
|
392 |
package urxvt; |
393 |
|
394 |
use strict; |
395 |
use Scalar::Util (); |
396 |
|
397 |
our $TERM; |
398 |
our @HOOKNAME; |
399 |
our $LIBDIR; |
400 |
|
401 |
BEGIN { |
402 |
urxvt->bootstrap; |
403 |
|
404 |
# overwrite perl's warn |
405 |
*CORE::GLOBAL::warn = sub { |
406 |
my $msg = join "", @_; |
407 |
$msg .= "\n" |
408 |
unless $msg =~ /\n$/; |
409 |
urxvt::warn ($msg); |
410 |
}; |
411 |
} |
412 |
|
413 |
my @hook_count; |
414 |
my $verbosity = $ENV{URXVT_PERL_VERBOSITY}; |
415 |
|
416 |
sub verbose { |
417 |
my ($level, $msg) = @_; |
418 |
warn "$msg\n" if $level <= $verbosity; |
419 |
} |
420 |
|
421 |
# find on_xxx subs in the package and register them |
422 |
# as hooks |
423 |
sub register_package($) { |
424 |
my ($pkg) = @_; |
425 |
|
426 |
for my $htype (0.. $#HOOKNAME) { |
427 |
my $name = $HOOKNAME[$htype]; |
428 |
|
429 |
my $ref = $pkg->can ("on_" . lc $name) |
430 |
or next; |
431 |
|
432 |
$TERM->{_hook}[$htype]{$pkg} = $ref; |
433 |
$hook_count[$htype]++ |
434 |
or set_should_invoke $htype, 1; |
435 |
} |
436 |
} |
437 |
|
438 |
my $extension_pkg = "extension0000"; |
439 |
my %extension_pkg; |
440 |
|
441 |
# load a single script into its own package, once only |
442 |
sub extension_package($) { |
443 |
my ($path) = @_; |
444 |
|
445 |
$extension_pkg{$path} ||= do { |
446 |
my $pkg = "urxvt::" . ($extension_pkg++); |
447 |
|
448 |
verbose 3, "loading extension '$path' into package '$pkg'"; |
449 |
|
450 |
open my $fh, "<:raw", $path |
451 |
or die "$path: $!"; |
452 |
|
453 |
my $source = "package $pkg; use strict; use utf8;\n" |
454 |
. "use base urxvt::term::proxy::;\n" |
455 |
. "#line 1 \"$path\"\n{\n" |
456 |
. (do { local $/; <$fh> }) |
457 |
. "\n};\n1"; |
458 |
|
459 |
eval $source or die "$path: $@"; |
460 |
|
461 |
$pkg |
462 |
} |
463 |
} |
464 |
|
465 |
our $retval; # return value for urxvt |
466 |
|
467 |
# called by the rxvt core |
468 |
sub invoke { |
469 |
local $TERM = shift; |
470 |
my $htype = shift; |
471 |
|
472 |
if ($htype == 0) { # INIT |
473 |
my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl"); |
474 |
|
475 |
for my $ext (map { split /,/, $TERM->resource ("perl_ext_$_") } 1, 2) { |
476 |
my @files = grep -f $_, map "$_/$ext", @dirs; |
477 |
|
478 |
if (@files) { |
479 |
register_package extension_package $files[0]; |
480 |
} else { |
481 |
warn "perl extension '$ext' not found in perl library search path\n"; |
482 |
} |
483 |
} |
484 |
} |
485 |
|
486 |
$retval = undef; |
487 |
|
488 |
if (my $cb = $TERM->{_hook}[$htype]) { |
489 |
verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")" |
490 |
if $verbosity >= 10; |
491 |
|
492 |
keys %$cb; |
493 |
|
494 |
while (my ($pkg, $cb) = each %$cb) { |
495 |
eval { |
496 |
$retval = $cb->( |
497 |
$TERM->{_pkg}{$pkg} ||= do { |
498 |
my $proxy = bless { }, $pkg; |
499 |
Scalar::Util::weaken ($proxy->{term} = $TERM); |
500 |
$proxy |
501 |
}, |
502 |
@_, |
503 |
) and last; |
504 |
}; |
505 |
warn $@ if $@;#d# |
506 |
} |
507 |
} |
508 |
|
509 |
if ($htype == 1) { # DESTROY |
510 |
# remove hooks if unused |
511 |
if (my $hook = $TERM->{_hook}) { |
512 |
for my $htype (0..$#$hook) { |
513 |
$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} } |
514 |
or set_should_invoke $htype, 0; |
515 |
} |
516 |
} |
517 |
|
518 |
# clear package objects |
519 |
%$_ = () for values %{ $TERM->{_pkg} }; |
520 |
|
521 |
# clear package |
522 |
%$TERM = (); |
523 |
} |
524 |
|
525 |
$retval |
526 |
} |
527 |
|
528 |
sub urxvt::term::proxy::AUTOLOAD { |
529 |
$urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/ |
530 |
or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable"; |
531 |
|
532 |
eval qq{ |
533 |
sub $urxvt::term::proxy::AUTOLOAD { |
534 |
my \$proxy = shift; |
535 |
\$proxy->{term}->$1 (\@_) |
536 |
} |
537 |
1 |
538 |
} or die "FATAL: unable to compile method forwarder: $@"; |
539 |
|
540 |
goto &$urxvt::term::proxy::AUTOLOAD; |
541 |
} |
542 |
|
543 |
sub urxvt::destroy_hook::DESTROY { |
544 |
${$_[0]}->(); |
545 |
} |
546 |
|
547 |
sub urxvt::destroy_hook(&) { |
548 |
bless \shift, urxvt::destroy_hook:: |
549 |
} |
550 |
|
551 |
=head2 The C<urxvt::term> Class |
552 |
|
553 |
=over 4 |
554 |
|
555 |
=item $term->destroy |
556 |
|
557 |
Destroy the terminal object (close the window, free resources etc.). |
558 |
|
559 |
=item $value = $term->resource ($name[, $newval]) |
560 |
|
561 |
Returns the current resource value associated with a given name and |
562 |
optionally sets a new value. Setting values is most useful in the C<init> |
563 |
hook. Unset resources are returned and accepted as C<undef>. |
564 |
|
565 |
The new value must be properly encoded to a suitable character encoding |
566 |
before passing it to this method. Similarly, the returned value may need |
567 |
to be converted from the used encoding to text. |
568 |
|
569 |
Resource names are as defined in F<src/rsinc.h>. Colours can be specified |
570 |
as resource names of the form C<< color+<index> >>, e.g. C<color+5>. (will |
571 |
likely change). |
572 |
|
573 |
Please note that resource strings will currently only be freed when the |
574 |
terminal is destroyed, so changing options frequently will eat memory. |
575 |
|
576 |
Here is a a likely non-exhaustive list of resource names, not all of which |
577 |
are supported in every build, please see the source to see the actual |
578 |
list: |
579 |
|
580 |
answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont |
581 |
borderLess color cursorBlink cursorUnderline cutchars delete_key |
582 |
display_name embed ext_bwidth fade font geometry hold iconName |
583 |
imFont imLocale inputMethod insecure int_bwidth intensityStyles |
584 |
italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier |
585 |
mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2 |
586 |
perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd |
587 |
reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating |
588 |
scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput |
589 |
scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle |
590 |
shade term_name title transparent transparent_all tripleclickwords |
591 |
utmpInhibit visualBell |
592 |
|
593 |
=cut |
594 |
|
595 |
sub urxvt::term::resource($$;$) { |
596 |
my ($self, $name) = (shift, shift); |
597 |
unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0); |
598 |
&urxvt::term::_resource |
599 |
} |
600 |
|
601 |
=item $rend = $term->rstyle ([$new_rstyle]) |
602 |
|
603 |
Return and optionally change the current rendition. Text that is output by |
604 |
the terminal application will use this style. |
605 |
|
606 |
=item ($row, $col) = $term->screen_cur ([$row, $col]) |
607 |
|
608 |
Return the current coordinates of the text cursor position and optionally |
609 |
set it (which is usually bad as applications don't expect that). |
610 |
|
611 |
=item ($row, $col) = $term->selection_mark ([$row, $col]) |
612 |
|
613 |
=item ($row, $col) = $term->selection_beg ([$row, $col]) |
614 |
|
615 |
=item ($row, $col) = $term->selection_end ([$row, $col]) |
616 |
|
617 |
Return the current values of the selection mark, begin or end positions, |
618 |
and optionally set them to new values. |
619 |
|
620 |
=item $success = $term->selection_grab ($eventtime) |
621 |
|
622 |
Try to request the primary selection from the server (for example, as set |
623 |
by the next method). |
624 |
|
625 |
=item $oldtext = $term->selection ([$newtext]) |
626 |
|
627 |
Return the current selection text and optionally replace it by C<$newtext>. |
628 |
|
629 |
#=item $term->overlay ($x, $y, $text) |
630 |
# |
631 |
#Create a simple multi-line overlay box. See the next method for details. |
632 |
# |
633 |
#=cut |
634 |
# |
635 |
#sub urxvt::term::scr_overlay { |
636 |
# my ($self, $x, $y, $text) = @_; |
637 |
# |
638 |
# my @lines = split /\n/, $text; |
639 |
# |
640 |
# my $w = 0; |
641 |
# for (map $self->strwidth ($_), @lines) { |
642 |
# $w = $_ if $w < $_; |
643 |
# } |
644 |
# |
645 |
# $self->scr_overlay_new ($x, $y, $w, scalar @lines); |
646 |
# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines; |
647 |
#} |
648 |
|
649 |
=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]]) |
650 |
|
651 |
Create a new (empty) overlay at the given position with the given |
652 |
width/height. C<$rstyle> defines the initial rendition style |
653 |
(default: C<OVERLAY_RSTYLE>). |
654 |
|
655 |
If C<$border> is C<2> (default), then a decorative border will be put |
656 |
around the box. |
657 |
|
658 |
If either C<$x> or C<$y> is negative, then this is counted from the |
659 |
right/bottom side, respectively. |
660 |
|
661 |
This method returns an urxvt::overlay object. The overlay will be visible |
662 |
as long as the perl object is referenced. |
663 |
|
664 |
The methods currently supported on C<urxvt::overlay> objects are: |
665 |
|
666 |
=over 4 |
667 |
|
668 |
=item $overlay->set ($x, $y, $text, $rend) |
669 |
|
670 |
Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts |
671 |
text in rxvt-unicode's special encoding and an array of rendition values |
672 |
at a specific position inside the overlay. |
673 |
|
674 |
=item $overlay->hide |
675 |
|
676 |
If visible, hide the overlay, but do not destroy it. |
677 |
|
678 |
=item $overlay->show |
679 |
|
680 |
If hidden, display the overlay again. |
681 |
|
682 |
=back |
683 |
|
684 |
=item $popup = $term->popup ($event) |
685 |
|
686 |
Creates a new C<urxvt::popup> object that implements a popup menu. The |
687 |
C<$event> I<must> be the event causing the menu to pop up (a button event, |
688 |
currently). |
689 |
|
690 |
=cut |
691 |
|
692 |
sub urxvt::term::popup { |
693 |
my ($self, $event) = @_; |
694 |
|
695 |
$self->grab ($event->{time}, 1) |
696 |
or return; |
697 |
|
698 |
my $popup = bless { |
699 |
term => $self, |
700 |
event => $event, |
701 |
}, urxvt::popup::; |
702 |
|
703 |
Scalar::Util::weaken $popup->{term}; |
704 |
|
705 |
$self->{_destroy}{$popup} = urxvt::destroy_hook { $popup->{popup}->destroy }; |
706 |
Scalar::Util::weaken $self->{_destroy}{$popup}; |
707 |
|
708 |
$popup |
709 |
} |
710 |
|
711 |
=item $cellwidth = $term->strwidth ($string) |
712 |
|
713 |
Returns the number of screen-cells this string would need. Correctly |
714 |
accounts for wide and combining characters. |
715 |
|
716 |
=item $octets = $term->locale_encode ($string) |
717 |
|
718 |
Convert the given text string into the corresponding locale encoding. |
719 |
|
720 |
=item $string = $term->locale_decode ($octets) |
721 |
|
722 |
Convert the given locale-encoded octets into a perl string. |
723 |
|
724 |
=item $term->scr_add_lines ($string) |
725 |
|
726 |
Write the given text string to the screen, as if output by the application |
727 |
running inside the terminal. It may not contain command sequences (escape |
728 |
codes), but is free to use line feeds, carriage returns and tabs. The |
729 |
string is a normal text string, not in locale-dependent encoding. |
730 |
|
731 |
Normally its not a good idea to use this function, as programs might be |
732 |
confused by changes in cursor position or scrolling. Its useful inside a |
733 |
C<on_add_lines> hook, though. |
734 |
|
735 |
=item $term->cmd_parse ($octets) |
736 |
|
737 |
Similar to C<scr_add_lines>, but the argument must be in the |
738 |
locale-specific encoding of the terminal and can contain command sequences |
739 |
(escape codes) that will be interpreted. |
740 |
|
741 |
=item $term->tt_write ($octets) |
742 |
|
743 |
Write the octets given in C<$data> to the tty (i.e. as program input). To |
744 |
pass characters instead of octets, you should convert your strings first |
745 |
to the locale-specific encoding using C<< $term->locale_encode >>. |
746 |
|
747 |
=item $windowid = $term->parent |
748 |
|
749 |
Return the window id of the toplevel window. |
750 |
|
751 |
=item $windowid = $term->vt |
752 |
|
753 |
Return the window id of the terminal window. |
754 |
|
755 |
=item $window_width = $term->width |
756 |
|
757 |
=item $window_height = $term->height |
758 |
|
759 |
=item $font_width = $term->fwidth |
760 |
|
761 |
=item $font_height = $term->fheight |
762 |
|
763 |
=item $font_ascent = $term->fbase |
764 |
|
765 |
=item $terminal_rows = $term->nrow |
766 |
|
767 |
=item $terminal_columns = $term->ncol |
768 |
|
769 |
=item $has_focus = $term->focus |
770 |
|
771 |
=item $is_mapped = $term->mapped |
772 |
|
773 |
=item $max_scrollback = $term->saveLines |
774 |
|
775 |
=item $nrow_plus_saveLines = $term->total_rows |
776 |
|
777 |
=item $lines_in_scrollback = $term->nsaved |
778 |
|
779 |
Return various integers describing terminal characteristics. |
780 |
|
781 |
=item $view_start = $term->view_start ([$newvalue]) |
782 |
|
783 |
Returns the negative row number of the topmost line. Minimum value is |
784 |
C<0>, which displays the normal terminal contents. Larger values scroll |
785 |
this many lines into the scrollback buffer. |
786 |
|
787 |
=item $term->want_refresh |
788 |
|
789 |
Requests a screen refresh. At the next opportunity, rxvt-unicode will |
790 |
compare the on-screen display with its stored representation. If they |
791 |
differ, it redraws the differences. |
792 |
|
793 |
Used after changing terminal contents to display them. |
794 |
|
795 |
=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]]) |
796 |
|
797 |
Returns the text of the entire row with number C<$row_number>. Row C<0> |
798 |
is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost |
799 |
terminal line. The scrollback buffer starts at line C<-1> and extends to |
800 |
line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line |
801 |
is requested. |
802 |
|
803 |
If C<$new_text> is specified, it will replace characters in the current |
804 |
line, starting at column C<$start_col> (default C<0>), which is useful |
805 |
to replace only parts of a line. The font index in the rendition will |
806 |
automatically be updated. |
807 |
|
808 |
C<$text> is in a special encoding: tabs and wide characters that use more |
809 |
than one cell when displayed are padded with urxvt::NOCHAR characters |
810 |
(C<chr 65535>). Characters with combining characters and other characters |
811 |
that do not fit into the normal tetx encoding will be replaced with |
812 |
characters in the private use area. |
813 |
|
814 |
You have to obey this encoding when changing text. The advantage is |
815 |
that C<substr> and similar functions work on screen cells and not on |
816 |
characters. |
817 |
|
818 |
The methods C<< $term->special_encode >> and C<< $term->special_decode >> |
819 |
can be used to convert normal strings into this encoding and vice versa. |
820 |
|
821 |
=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]]) |
822 |
|
823 |
Like C<< $term->ROW_t >>, but returns an arrayref with rendition |
824 |
bitsets. Rendition bitsets contain information about colour, font, font |
825 |
styles and similar information. See also C<< $term->ROW_t >>. |
826 |
|
827 |
When setting rendition, the font mask will be ignored. |
828 |
|
829 |
See the section on RENDITION, above. |
830 |
|
831 |
=item $length = $term->ROW_l ($row_number[, $new_length]) |
832 |
|
833 |
Returns the number of screen cells that are in use ("the line |
834 |
length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the |
835 |
line is joined with the following one. |
836 |
|
837 |
=item $bool = $term->is_longer ($row_number) |
838 |
|
839 |
Returns true if the row is part of a multiple-row logical "line" (i.e. |
840 |
joined with the following row), which means all characters are in use |
841 |
and it is continued on the next row (and possibly a continuation of the |
842 |
previous row(s)). |
843 |
|
844 |
=item $line = $term->line ($row_number) |
845 |
|
846 |
Create and return a new C<urxvt::line> object that stores information |
847 |
about the logical line that row C<$row_number> is part of. It supports the |
848 |
following methods: |
849 |
|
850 |
=over 4 |
851 |
|
852 |
=item $text = $line->t ([$new_text]) |
853 |
|
854 |
Returns or replaces the full text of the line, similar to C<ROW_t> |
855 |
|
856 |
=item $rend = $line->r ([$new_rend]) |
857 |
|
858 |
Returns or replaces the full rendition array of the line, similar to C<ROW_r> |
859 |
|
860 |
=item $length = $line->l |
861 |
|
862 |
Returns the length of the line in cells, similar to C<ROW_l>. |
863 |
|
864 |
=item $rownum = $line->beg |
865 |
|
866 |
=item $rownum = $line->end |
867 |
|
868 |
Return the row number of the first/last row of the line, respectively. |
869 |
|
870 |
=item $offset = $line->offset_of ($row, $col) |
871 |
|
872 |
Returns the character offset of the given row|col pair within the logical |
873 |
line. |
874 |
|
875 |
=item ($row, $col) = $line->coord_of ($offset) |
876 |
|
877 |
Translates a string offset into terminal coordinates again. |
878 |
|
879 |
=back |
880 |
|
881 |
=cut |
882 |
|
883 |
sub urxvt::term::line { |
884 |
my ($self, $row) = @_; |
885 |
|
886 |
my $maxrow = $self->nrow - 1; |
887 |
|
888 |
my ($beg, $end) = ($row, $row); |
889 |
|
890 |
--$beg while $self->ROW_is_longer ($beg - 1); |
891 |
++$end while $self->ROW_is_longer ($end) && $end < $maxrow; |
892 |
|
893 |
bless { |
894 |
term => $self, |
895 |
beg => $beg, |
896 |
end => $end, |
897 |
ncol => $self->ncol, |
898 |
len => ($end - $beg) * $self->ncol + $self->ROW_l ($end), |
899 |
}, urxvt::line:: |
900 |
} |
901 |
|
902 |
sub urxvt::line::t { |
903 |
my ($self) = @_; |
904 |
|
905 |
if (@_ > 1) |
906 |
{ |
907 |
$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol}) |
908 |
for $self->{beg} .. $self->{end}; |
909 |
} |
910 |
|
911 |
defined wantarray && |
912 |
substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}), |
913 |
0, $self->{len} |
914 |
} |
915 |
|
916 |
sub urxvt::line::r { |
917 |
my ($self) = @_; |
918 |
|
919 |
if (@_ > 1) |
920 |
{ |
921 |
$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol}) |
922 |
for $self->{beg} .. $self->{end}; |
923 |
} |
924 |
|
925 |
if (defined wantarray) { |
926 |
my $rend = [ |
927 |
map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end} |
928 |
]; |
929 |
$#$rend = $self->{len} - 1; |
930 |
return $rend; |
931 |
} |
932 |
|
933 |
() |
934 |
} |
935 |
|
936 |
sub urxvt::line::beg { $_[0]{beg} } |
937 |
sub urxvt::line::end { $_[0]{end} } |
938 |
sub urxvt::line::l { $_[0]{len} } |
939 |
|
940 |
sub urxvt::line::offset_of { |
941 |
my ($self, $row, $col) = @_; |
942 |
|
943 |
($row - $self->{beg}) * $self->{ncol} + $col |
944 |
} |
945 |
|
946 |
sub urxvt::line::coord_of { |
947 |
my ($self, $offset) = @_; |
948 |
|
949 |
use integer; |
950 |
|
951 |
( |
952 |
$offset / $self->{ncol} + $self->{beg}, |
953 |
$offset % $self->{ncol} |
954 |
) |
955 |
} |
956 |
|
957 |
=item ($row, $col) = $line->coord_of ($offset) |
958 |
=item $text = $term->special_encode $string |
959 |
|
960 |
Converts a perl string into the special encoding used by rxvt-unicode, |
961 |
where one character corresponds to one screen cell. See |
962 |
C<< $term->ROW_t >> for details. |
963 |
|
964 |
=item $string = $term->special_decode $text |
965 |
|
966 |
Converts rxvt-unicodes text reprsentation into a perl string. See |
967 |
C<< $term->ROW_t >> for details. |
968 |
|
969 |
=back |
970 |
|
971 |
=head2 The C<urxvt::popup> Class |
972 |
|
973 |
=over 4 |
974 |
|
975 |
=cut |
976 |
|
977 |
package urxvt::popup; |
978 |
|
979 |
sub add_item { |
980 |
my ($self, $item) = @_; |
981 |
|
982 |
push @{ $self->{item} }, $item; |
983 |
} |
984 |
|
985 |
sub add_button { |
986 |
my ($self, $text, $cb) = @_; |
987 |
|
988 |
$self->add_item ({ type => "button", text => "[ $text ]", activate => $cb }); |
989 |
} |
990 |
|
991 |
sub show { |
992 |
my ($self) = @_; |
993 |
|
994 |
local $urxvt::popup::self = $self; |
995 |
|
996 |
urxvt->new ("--perl-lib" => "", "--perl-ext-common" => "", "-pty-fd" => -1, "-sl" => 0, "-b" => 0, |
997 |
"--transient-for" => $self->{term}->parent, |
998 |
"-pe" => "urxvt-popup") |
999 |
or die "unable to create popup window\n"; |
1000 |
} |
1001 |
|
1002 |
sub DESTROY { |
1003 |
my ($self) = @_; |
1004 |
|
1005 |
$self->{term}->ungrab; |
1006 |
} |
1007 |
|
1008 |
=head2 The C<urxvt::timer> Class |
1009 |
|
1010 |
This class implements timer watchers/events. Time is represented as a |
1011 |
fractional number of seconds since the epoch. Example: |
1012 |
|
1013 |
$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0); |
1014 |
$term->{timer} = urxvt::timer |
1015 |
->new |
1016 |
->interval (1) |
1017 |
->cb (sub { |
1018 |
$term->{overlay}->set (0, 0, |
1019 |
sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]); |
1020 |
}); |
1021 |
|
1022 |
=over 4 |
1023 |
|
1024 |
=item $timer = new urxvt::timer |
1025 |
|
1026 |
Create a new timer object in started state. It is scheduled to fire |
1027 |
immediately. |
1028 |
|
1029 |
=item $timer = $timer->cb (sub { my ($timer) = @_; ... }) |
1030 |
|
1031 |
Set the callback to be called when the timer triggers. |
1032 |
|
1033 |
=item $tstamp = $timer->at |
1034 |
|
1035 |
Return the time this watcher will fire next. |
1036 |
|
1037 |
=item $timer = $timer->set ($tstamp) |
1038 |
|
1039 |
Set the time the event is generated to $tstamp. |
1040 |
|
1041 |
=item $timer = $timer->interval ($interval) |
1042 |
|
1043 |
Normally (and when C<$interval> is C<0>), the timer will automatically |
1044 |
stop after it has fired once. If C<$interval> is non-zero, then the timer |
1045 |
is automatically rescheduled at the given intervals. |
1046 |
|
1047 |
=item $timer = $timer->start |
1048 |
|
1049 |
Start the timer. |
1050 |
|
1051 |
=item $timer = $timer->start ($tstamp) |
1052 |
|
1053 |
Set the event trigger time to C<$tstamp> and start the timer. |
1054 |
|
1055 |
=item $timer = $timer->stop |
1056 |
|
1057 |
Stop the timer. |
1058 |
|
1059 |
=back |
1060 |
|
1061 |
=head2 The C<urxvt::iow> Class |
1062 |
|
1063 |
This class implements io watchers/events. Example: |
1064 |
|
1065 |
$term->{socket} = ... |
1066 |
$term->{iow} = urxvt::iow |
1067 |
->new |
1068 |
->fd (fileno $term->{socket}) |
1069 |
->events (1) # wait for read data |
1070 |
->start |
1071 |
->cb (sub { |
1072 |
my ($iow, $revents) = @_; |
1073 |
# $revents must be 1 here, no need to check |
1074 |
sysread $term->{socket}, my $buf, 8192 |
1075 |
or end-of-file; |
1076 |
}); |
1077 |
|
1078 |
|
1079 |
=over 4 |
1080 |
|
1081 |
=item $iow = new urxvt::iow |
1082 |
|
1083 |
Create a new io watcher object in stopped state. |
1084 |
|
1085 |
=item $iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... }) |
1086 |
|
1087 |
Set the callback to be called when io events are triggered. C<$reventmask> |
1088 |
is a bitset as described in the C<events> method. |
1089 |
|
1090 |
=item $iow = $iow->fd ($fd) |
1091 |
|
1092 |
Set the filedescriptor (not handle) to watch. |
1093 |
|
1094 |
=item $iow = $iow->events ($eventmask) |
1095 |
|
1096 |
Set the event mask to watch. Bit #0 (value C<1>) enables watching for read |
1097 |
data, Bit #1 (value C<2>) enables watching for write data. |
1098 |
|
1099 |
=item $iow = $iow->start |
1100 |
|
1101 |
Start watching for requested events on the given handle. |
1102 |
|
1103 |
=item $iow = $iow->stop |
1104 |
|
1105 |
Stop watching for events on the given filehandle. |
1106 |
|
1107 |
=back |
1108 |
|
1109 |
=head1 ENVIRONMENT |
1110 |
|
1111 |
=head2 URXVT_PERL_VERBOSITY |
1112 |
|
1113 |
This variable controls the verbosity level of the perl extension. Higher |
1114 |
numbers indicate more verbose output. |
1115 |
|
1116 |
=over 4 |
1117 |
|
1118 |
=item =0 - only fatal messages |
1119 |
|
1120 |
=item =3 - script loading and management |
1121 |
|
1122 |
=item =10 - all events received |
1123 |
|
1124 |
=back |
1125 |
|
1126 |
=head1 AUTHOR |
1127 |
|
1128 |
Marc Lehmann <pcg@goof.com> |
1129 |
http://software.schmorp.de/pkg/rxvt-unicode |
1130 |
|
1131 |
=cut |
1132 |
|
1133 |
1 |