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1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2 <html xmlns="http://www.w3.org/1999/xhtml">
3 <head>
4 <title>rxvtperl - rxvt-unicode's embedded perl interpreter</title>
5 <link rev="made" href="mailto:perl-binary@plan9.de" />
6 </head>
7
8 <body style="background-color: white">
9
10 <p><a name="__index__"></a></p>
11 <!-- INDEX BEGIN -->
12
13 <ul>
14
15 <li><a href="#name">NAME</a></li>
16 <li><a href="#synopsis">SYNOPSIS</a></li>
17 <li><a href="#description">DESCRIPTION</a></li>
18 <li><a href="#prepackaged_extensions">PREPACKAGED EXTENSIONS</a></li>
19 <li><a href="#api_documentation">API DOCUMENTATION</a></li>
20 <ul>
21
22 <li><a href="#general_api_considerations">General API Considerations</a></li>
23 <li><a href="#extension_objects">Extension Objects</a></li>
24 <li><a href="#hooks">Hooks</a></li>
25 <li><a href="#variables_in_the_urxvt_package">Variables in the <code>urxvt</code> Package</a></li>
26 <li><a href="#functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></li>
27 <li><a href="#rendition">RENDITION</a></li>
28 <li><a href="#the_urxvt__anyevent_class">The <code>urxvt::anyevent</code> Class</a></li>
29 <li><a href="#the_urxvt__term_class">The <code>urxvt::term</code> Class</a></li>
30 <li><a href="#the_urxvt__popup_class">The <code>urxvt::popup</code> Class</a></li>
31 <li><a href="#the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></li>
32 <li><a href="#the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></li>
33 <li><a href="#the_urxvt__iw_class">The <code>urxvt::iw</code> Class</a></li>
34 <li><a href="#the_urxvt__pw_class">The <code>urxvt::pw</code> Class</a></li>
35 </ul>
36
37 <li><a href="#environment">ENVIRONMENT</a></li>
38 <ul>
39
40 <li><a href="#urxvt_perl_verbosity">URXVT_PERL_VERBOSITY</a></li>
41 </ul>
42
43 <li><a href="#author">AUTHOR</a></li>
44 </ul>
45 <!-- INDEX END -->
46
47 <hr />
48 <p>
49 </p>
50 <hr />
51 <h1><a name="name">NAME</a></h1>
52 <p>rxvtperl - rxvt-unicode's embedded perl interpreter</p>
53 <p>
54 </p>
55 <hr />
56 <h1><a name="synopsis">SYNOPSIS</a></h1>
57 <pre>
58 # create a file grab_test in $HOME:</pre>
59 <pre>
60 sub on_sel_grab {
61 warn &quot;you selected &quot;, $_[0]-&gt;selection;
62 ()
63 }</pre>
64 <pre>
65 # start a rxvt using it:</pre>
66 <pre>
67 rxvt --perl-lib $HOME -pe grab_test</pre>
68 <p>
69 </p>
70 <hr />
71 <h1><a name="description">DESCRIPTION</a></h1>
72 <p>Everytime a terminal object gets created, extension scripts specified via
73 the <code>perl</code> resource are loaded and associated with it.</p>
74 <p>Scripts are compiled in a 'use strict' and 'use utf8' environment, and
75 thus must be encoded as UTF-8.</p>
76 <p>Each script will only ever be loaded once, even in rxvtd, where
77 scripts will be shared (but not enabled) for all terminals.</p>
78 <p>
79 </p>
80 <hr />
81 <h1><a name="prepackaged_extensions">PREPACKAGED EXTENSIONS</a></h1>
82 <p>This section describes the extensions delivered with this release. You can
83 find them in <em>/opt/rxvt/lib/urxvt/perl/</em>.</p>
84 <p>You can activate them like this:</p>
85 <pre>
86 rxvt -pe &lt;extensionname&gt;</pre>
87 <p>Or by adding them to the resource for extensions loaded by default:</p>
88 <pre>
89 URxvt.perl-ext-common: default,automove-background,selection-autotransform</pre>
90 <dl>
91 <dt><strong><a name="item_selection">selection (enabled by default)</a></strong><br />
92 </dt>
93 <dd>
94 (More) intelligent selection. This extension tries to be more intelligent
95 when the user extends selections (double-click and further clicks). Right
96 now, it tries to select words, urls and complete shell-quoted
97 arguments, which is very convenient, too, if your <em>ls</em> supports
98 <code>--quoting-style=shell</code>.
99 </dd>
100 <dd>
101 <p>A double-click usually selects the word under the cursor, further clicks
102 will enlarge the selection.</p>
103 </dd>
104 <dd>
105 <p>The selection works by trying to match a number of regexes and displaying
106 them in increasing order of length. You can add your own regexes by
107 specifying resources of the form:</p>
108 </dd>
109 <dd>
110 <pre>
111 URxvt.selection.pattern-0: perl-regex
112 URxvt.selection.pattern-1: perl-regex
113 ...</pre>
114 </dd>
115 <dd>
116 <p>The index number (0, 1...) must not have any holes, and each regex must
117 contain at least one pair of capturing parentheses, which will be used for
118 the match. For example, the followign adds a regex that matches everything
119 between two vertical bars:</p>
120 </dd>
121 <dd>
122 <pre>
123 URxvt.selection.pattern-0: \\|([^|]+)\\|</pre>
124 </dd>
125 <dd>
126 <p>You can look at the source of the selection extension to see more
127 interesting uses, such as parsing a line from beginning to end.</p>
128 </dd>
129 <dd>
130 <p>This extension also offers following bindable keyboard commands:</p>
131 </dd>
132 <dl>
133 <dt><strong><a name="item_rot13">rot13</a></strong><br />
134 </dt>
135 <dd>
136 Rot-13 the selection when activated. Used via keyboard trigger:
137 </dd>
138 <dd>
139 <pre>
140 URxvt.keysym.C-M-r: perl:selection:rot13</pre>
141 </dd>
142 <p></p></dl>
143 <dt><strong><a name="item_popup">option-popup (enabled by default)</a></strong><br />
144 </dt>
145 <dd>
146 Binds a popup menu to Ctrl-Button2 that lets you toggle (some) options at
147 runtime.
148 </dd>
149 <p></p>
150 <dt><strong>selection-popup (enabled by default)</strong><br />
151 </dt>
152 <dd>
153 Binds a popup menu to Ctrl-Button3 that lets you convert the selection
154 text into various other formats/action (such as uri unescaping, perl
155 evalution, web-browser starting etc.), depending on content.
156 </dd>
157 <dd>
158 <p>Other extensions can extend this popup menu by pushing a code reference
159 onto <code>@{ $term-</code>{selection_popup_hook} }&gt;, that is called whenever the
160 popup is displayed.</p>
161 </dd>
162 <dd>
163 <p>It's sole argument is the popup menu, which can be modified. The selection
164 is in <code>$_</code>, which can be used to decide wether to add something or not.
165 It should either return nothing or a string and a code reference. The
166 string will be used as button text and the code reference will be called
167 when the button gets activated and should transform <code>$_</code>.</p>
168 </dd>
169 <dd>
170 <p>The following will add an entry <code>a to b</code> that transforms all <code>a</code>s in
171 the selection to <code>b</code>s, but only if the selection currently contains any
172 <code>a</code>s:</p>
173 </dd>
174 <dd>
175 <pre>
176 push @{ $self-&gt;{term}{selection_popup_hook} }, sub {
177 /a/ ? (&quot;a to be&quot; =&gt; sub { s/a/b/g }
178 : ()
179 };</pre>
180 </dd>
181 <p></p>
182 <dt><strong><a name="item_searchable_2dscrollback_3chotkey_3e__28enabled_by_">searchable-scrollback&lt;hotkey&gt; (enabled by default)</a></strong><br />
183 </dt>
184 <dd>
185 Adds regex search functionality to the scrollback buffer, triggered
186 by a hotkey (default: <code>M-s</code>). While in search mode, normal terminal
187 input/output is suspended and a regex is displayed at the bottom of the
188 screen.
189 </dd>
190 <dd>
191 <p>Inputting characters appends them to the regex and continues incremental
192 search. <code>BackSpace</code> removes a character from the regex, <code>Up</code> and <code>Down</code>
193 search upwards/downwards in the scrollback buffer, <code>End</code> jumps to the
194 bottom. <code>Escape</code> leaves search mode and returns to the point where search
195 was started, while <code>Enter</code> or <code>Return</code> stay at the current position and
196 additionally stores the first match in the current line into the primary
197 selection.</p>
198 </dd>
199 <p></p>
200 <dt><strong><a name="item_selection_2dautotransform">selection-autotransform</a></strong><br />
201 </dt>
202 <dd>
203 This selection allows you to do automatic transforms on a selection
204 whenever a selection is made.
205 </dd>
206 <dd>
207 <p>It works by specifying perl snippets (most useful is a single <code>s///</code>
208 operator) that modify <code>$_</code> as resources:</p>
209 </dd>
210 <dd>
211 <pre>
212 URxvt.selection-autotransform.0: transform
213 URxvt.selection-autotransform.1: transform
214 ...</pre>
215 </dd>
216 <dd>
217 <p>For example, the following will transform selections of the form
218 <code>filename:number</code>, often seen in compiler messages, into <code>vi +$filename
219 $word</code>:</p>
220 </dd>
221 <dd>
222 <pre>
223 URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/</pre>
224 </dd>
225 <dd>
226 <p>And this example matches the same,but replaces it with vi-commands you can
227 paste directly into your (vi :) editor:</p>
228 </dd>
229 <dd>
230 <pre>
231 URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/</pre>
232 </dd>
233 <dd>
234 <p>Of course, this can be modified to suit your needs and your editor :)</p>
235 </dd>
236 <dd>
237 <p>To expand the example above to typical perl error messages (``XXX at
238 FILENAME line YYY.''), you need a slightly more elaborate solution:</p>
239 </dd>
240 <dd>
241 <pre>
242 URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
243 URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/</pre>
244 </dd>
245 <dd>
246 <p>The first line tells the selection code to treat the unchanging part of
247 every error message as a selection pattern, and the second line transforms
248 the message into vi commands to load the file.</p>
249 </dd>
250 <p></p>
251 <dt><strong><a name="item_tabbed">tabbed</a></strong><br />
252 </dt>
253 <dd>
254 This transforms the terminal into a tabbar with additional terminals, that
255 is, it implements what is commonly refered to as ``tabbed terminal''. The topmost line
256 displays a ``[NEW]'' button, which, when clicked, will add a new tab, followed by one
257 button per tab.
258 </dd>
259 <dd>
260 <p>Clicking a button will activate that tab. Pressing Shift-Left and
261 Shift-Right will switch to the tab left or right of the current one.</p>
262 </dd>
263 <p></p>
264 <dt><strong><a name="item_mark_2durls">mark-urls</a></strong><br />
265 </dt>
266 <dd>
267 Uses per-line display filtering (<code>on_line_update</code>) to underline urls and
268 make them clickable. When middle-clicked, the program specified in the
269 resource <code>urlLauncher</code> (default <code>x-www-browser</code>) will be started with
270 the URL as first argument.
271 </dd>
272 <p></p>
273 <dt><strong><a name="item_automove_2dbackground">automove-background</a></strong><br />
274 </dt>
275 <dd>
276 This is basically a one-line extension that dynamically changes the background pixmap offset
277 to the window position, in effect creating the same effect as pseudo transparency with
278 a custom pixmap. No scaling is supported in this mode. Exmaple:
279 </dd>
280 <dd>
281 <pre>
282 rxvt -pixmap background.xpm -pe automove-background</pre>
283 </dd>
284 <p></p>
285 <dt><strong><a name="item_block_2dgraphics_2dto_2dascii">block-graphics-to-ascii</a></strong><br />
286 </dt>
287 <dd>
288 A not very useful example of filtering all text output to the terminal,
289 by replacing all line-drawing characters (U+2500 .. U+259F) by a
290 similar-looking ascii character.
291 </dd>
292 <p></p>
293 <dt><strong><a name="item_digital_2dclock">digital-clock</a></strong><br />
294 </dt>
295 <dd>
296 Displays a digital clock using the built-in overlay.
297 </dd>
298 <p></p>
299 <dt><strong><a name="item_example_2drefresh_2dhooks">example-refresh-hooks</a></strong><br />
300 </dt>
301 <dd>
302 Displays a very simple digital clock in the upper right corner of the
303 window. Illustrates overwriting the refresh callbacks to create your own
304 overlays or changes.
305 </dd>
306 <p></p>
307 <dt><strong><a name="item_selection_2dpastebin">selection-pastebin</a></strong><br />
308 </dt>
309 <dd>
310 This is a little rarely useful extension that Uploads the selection as
311 textfile to a remote site (or does other things). (The implementation is
312 not currently secure for use in a multiuser environment as it writes to
313 <em>/tmp</em> directly.).
314 </dd>
315 <dd>
316 <p>It listens to the <code>selection-pastebin:remote-pastebin</code> keyboard command,
317 i.e.</p>
318 </dd>
319 <dd>
320 <pre>
321 URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin</pre>
322 </dd>
323 <dd>
324 <p>Pressing this combination runs a command with <code>%</code> replaced by the name of
325 the textfile. This command can be set via a resource:</p>
326 </dd>
327 <dd>
328 <pre>
329 URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.</pre>
330 </dd>
331 <dd>
332 <p>And the default is likely not useful to anybody but the few people around
333 here :)</p>
334 </dd>
335 <dd>
336 <p>The name of the textfile is the hex encoded md5 sum of the selection, so
337 the same content should lead to the same filename.</p>
338 </dd>
339 <dd>
340 <p>After a successful upload the selection will be replaced by the text given
341 in the <code>selection-pastebin-url</code> resource (again, the % is the placeholder
342 for the filename):</p>
343 </dd>
344 <dd>
345 <pre>
346 URxvt.selection-pastebin.url: <a href="http://www.ta-sa.org/files/txt/%">http://www.ta-sa.org/files/txt/%</a></pre>
347 </dd>
348 <p></p></dl>
349 <p>
350 </p>
351 <hr />
352 <h1><a name="api_documentation">API DOCUMENTATION</a></h1>
353 <p>
354 </p>
355 <h2><a name="general_api_considerations">General API Considerations</a></h2>
356 <p>All objects (such as terminals, time watchers etc.) are typical
357 reference-to-hash objects. The hash can be used to store anything you
358 like. All members starting with an underscore (such as <code>_ptr</code> or
359 <code>_hook</code>) are reserved for internal uses and <strong>MUST NOT</strong> be accessed or
360 modified).</p>
361 <p>When objects are destroyed on the C++ side, the perl object hashes are
362 emptied, so its best to store related objects such as time watchers and
363 the like inside the terminal object so they get destroyed as soon as the
364 terminal is destroyed.</p>
365 <p>Argument names also often indicate the type of a parameter. Here are some
366 hints on what they mean:</p>
367 <dl>
368 <dt><strong><a name="item__24text">$text</a></strong><br />
369 </dt>
370 <dd>
371 Rxvt-unicodes special way of encoding text, where one ``unicode'' character
372 always represents one screen cell. See <a href="#item_row_t">ROW_t</a> for a discussion of this format.
373 </dd>
374 <p></p>
375 <dt><strong><a name="item__24string">$string</a></strong><br />
376 </dt>
377 <dd>
378 A perl text string, with an emphasis on <em>text</em>. It can store all unicode
379 characters and is to be distinguished with text encoded in a specific
380 encoding (often locale-specific) and binary data.
381 </dd>
382 <p></p>
383 <dt><strong><a name="item__24octets">$octets</a></strong><br />
384 </dt>
385 <dd>
386 Either binary data or - more common - a text string encoded in a
387 locale-specific way.
388 </dd>
389 <p></p></dl>
390 <p>
391 </p>
392 <h2><a name="extension_objects">Extension Objects</a></h2>
393 <p>Very perl extension is a perl class. A separate perl object is created
394 for each terminal and each extension and passed as the first parameter to
395 hooks. So extensions can use their <code>$self</code> object without having to think
396 about other extensions, with the exception of methods and members that
397 begin with an underscore character <code>_</code>: these are reserved for internal
398 use.</p>
399 <p>Although it isn't a <code>urxvt::term</code> object, you can call all methods of the
400 <code>urxvt::term</code> class on this object.</p>
401 <p>It has the following methods and data members:</p>
402 <dl>
403 <dt><strong><a name="item__24urxvt_term__3d__24self_2d_3e_7bterm_7d">$urxvt_term = $self-&gt;{term}</a></strong><br />
404 </dt>
405 <dd>
406 Returns the <code>urxvt::term</code> object associated with this instance of the
407 extension. This member <em>must not</em> be changed in any way.
408 </dd>
409 <p></p>
410 <dt><strong><a name="item_enable">$self-&gt;enable ($hook_name =&gt; $cb, [$hook_name =&gt; $cb..])</a></strong><br />
411 </dt>
412 <dd>
413 Dynamically enable the given hooks (named without the <code>on_</code> prefix) for
414 this extension, replacing any previous hook. This is useful when you want
415 to overwrite time-critical hooks only temporarily.
416 </dd>
417 <p></p>
418 <dt><strong><a name="item_disable">$self-&gt;disable ($hook_name[, $hook_name..])</a></strong><br />
419 </dt>
420 <dd>
421 Dynamically disable the given hooks.
422 </dd>
423 <p></p></dl>
424 <p>
425 </p>
426 <h2><a name="hooks">Hooks</a></h2>
427 <p>The following subroutines can be declared in extension files, and will be
428 called whenever the relevant event happens.</p>
429 <p>The first argument passed to them is an extension oject as described in
430 the in the <code>Extension Objects</code> section.</p>
431 <p><strong>All</strong> of these hooks must return a boolean value. If any of the called
432 hooks returns true, then the event counts as being <em>consumed</em>, and the
433 relevant action might not be carried out by the C++ code.</p>
434 <p><em>When in doubt, return a false value (preferably <code>()</code>). </em>&gt;</p>
435 <dl>
436 <dt><strong><a name="item_on_init__24term">on_init $term</a></strong><br />
437 </dt>
438 <dd>
439 Called after a new terminal object has been initialized, but before
440 windows are created or the command gets run. Most methods are unsafe to
441 call or deliver senseless data, as terminal size and other characteristics
442 have not yet been determined. You can safely query and change resources
443 and options, though. For many purposes the <code>on_start</code> hook is a better
444 place.
445 </dd>
446 <p></p>
447 <dt><strong><a name="item_on_start__24term">on_start $term</a></strong><br />
448 </dt>
449 <dd>
450 Called at the very end of initialisation of a new terminal, just before
451 trying to map (display) the toplevel and returning to the mainloop.
452 </dd>
453 <p></p>
454 <dt><strong><a name="item_on_destroy__24term">on_destroy $term</a></strong><br />
455 </dt>
456 <dd>
457 Called whenever something tries to destroy terminal, before doing anything
458 yet. If this hook returns true, then destruction is skipped, but this is
459 rarely a good idea.
460 </dd>
461 <p></p>
462 <dt><strong><a name="item_on_reset__24term">on_reset $term</a></strong><br />
463 </dt>
464 <dd>
465 Called after the screen is ``reset'' for any reason, such as resizing or
466 control sequences. Here is where you can react on changes to size-related
467 variables.
468 </dd>
469 <p></p>
470 <dt><strong><a name="item_on_child_start__24term_2c__24pid">on_child_start $term, $pid</a></strong><br />
471 </dt>
472 <dd>
473 Called just after the child process has been <code>fork</code>ed.
474 </dd>
475 <p></p>
476 <dt><strong><a name="item_on_child_exit__24term_2c__24status">on_child_exit $term, $status</a></strong><br />
477 </dt>
478 <dd>
479 Called just after the child process has exited. <code>$status</code> is the status
480 from <code>waitpid</code>.
481 </dd>
482 <p></p>
483 <dt><strong><a name="item_on_sel_make__24term_2c__24eventtime">on_sel_make $term, $eventtime</a></strong><br />
484 </dt>
485 <dd>
486 Called whenever a selection has been made by the user, but before the
487 selection text is copied, so changes to the beginning, end or type of the
488 selection will be honored.
489 </dd>
490 <dd>
491 <p>Returning a true value aborts selection making by urxvt, in which case you
492 have to make a selection yourself by calling <a href="#item_selection_grab"><code>$term-&gt;selection_grab</code></a>.</p>
493 </dd>
494 <p></p>
495 <dt><strong><a name="item_on_sel_grab__24term_2c__24eventtime">on_sel_grab $term, $eventtime</a></strong><br />
496 </dt>
497 <dd>
498 Called whenever a selection has been copied, but before the selection is
499 requested from the server. The selection text can be queried and changed
500 by calling <a href="#item_selection"><code>$term-&gt;selection</code></a>.
501 </dd>
502 <dd>
503 <p>Returning a true value aborts selection grabbing. It will still be hilighted.</p>
504 </dd>
505 <p></p>
506 <dt><strong><a name="item_on_sel_extend__24term">on_sel_extend $term</a></strong><br />
507 </dt>
508 <dd>
509 Called whenever the user tries to extend the selection (e.g. with a double
510 click) and is either supposed to return false (normal operation), or
511 should extend the selection itelf and return true to suppress the built-in
512 processing. This can happen multiple times, as long as the callback
513 returns true, it will be called on every further click by the user and is
514 supposed to enlarge the selection more and more, if possible.
515 </dd>
516 <dd>
517 <p>See the <em>selection</em> example extension.</p>
518 </dd>
519 <p></p>
520 <dt><strong><a name="item_on_view_change__24term_2c__24offset">on_view_change $term, $offset</a></strong><br />
521 </dt>
522 <dd>
523 Called whenever the view offset changes, i..e the user or program
524 scrolls. Offset <code>0</code> means display the normal terminal, positive values
525 show this many lines of scrollback.
526 </dd>
527 <p></p>
528 <dt><strong><a name="item_on_scroll_back__24term_2c__24lines_2c__24saved">on_scroll_back $term, $lines, $saved</a></strong><br />
529 </dt>
530 <dd>
531 Called whenever lines scroll out of the terminal area into the scrollback
532 buffer. <code>$lines</code> is the number of lines scrolled out and may be larger
533 than the scroll back buffer or the terminal.
534 </dd>
535 <dd>
536 <p>It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
537 $nrow - 1) represent the lines to be scrolled out). <code>$saved</code> is the total
538 number of lines that will be in the scrollback buffer.</p>
539 </dd>
540 <p></p>
541 <dt><strong><a name="item_on_osc_seq__24term_2c__24string">on_osc_seq $term, $string</a></strong><br />
542 </dt>
543 <dd>
544 Called whenever the <strong>ESC ] 777 ; string ST</strong> command sequence (OSC =
545 operating system command) is processed. Cursor position and other state
546 information is up-to-date when this happens. For interoperability, the
547 string should start with the extension name and a colon, to distinguish
548 it from commands for other extensions, and this might be enforced in the
549 future.
550 </dd>
551 <dd>
552 <p>Be careful not ever to trust (in a security sense) the data you receive,
553 as its source can not easily be controleld (e-mail content, messages from
554 other users on the same system etc.).</p>
555 </dd>
556 <p></p>
557 <dt><strong><a name="item_on_add_lines__24term_2c__24string">on_add_lines $term, $string</a></strong><br />
558 </dt>
559 <dd>
560 Called whenever text is about to be output, with the text as argument. You
561 can filter/change and output the text yourself by returning a true value
562 and calling <a href="#item_scr_add_lines"><code>$term-&gt;scr_add_lines</code></a> yourself. Please note that this
563 might be very slow, however, as your hook is called for <strong>all</strong> text being
564 output.
565 </dd>
566 <p></p>
567 <dt><strong><a name="item_on_tt_write__24term_2c__24octets">on_tt_write $term, $octets</a></strong><br />
568 </dt>
569 <dd>
570 Called whenever some data is written to the tty/pty and can be used to
571 suppress or filter tty input.
572 </dd>
573 <p></p>
574 <dt><strong><a name="item_on_line_update__24term_2c__24row">on_line_update $term, $row</a></strong><br />
575 </dt>
576 <dd>
577 Called whenever a line was updated or changed. Can be used to filter
578 screen output (e.g. underline urls or other useless stuff). Only lines
579 that are being shown will be filtered, and, due to performance reasons,
580 not always immediately.
581 </dd>
582 <dd>
583 <p>The row number is always the topmost row of the line if the line spans
584 multiple rows.</p>
585 </dd>
586 <dd>
587 <p>Please note that, if you change the line, then the hook might get called
588 later with the already-modified line (e.g. if unrelated parts change), so
589 you cannot just toggle rendition bits, but only set them.</p>
590 </dd>
591 <p></p>
592 <dt><strong><a name="item_on_refresh_begin__24term">on_refresh_begin $term</a></strong><br />
593 </dt>
594 <dd>
595 Called just before the screen gets redrawn. Can be used for overlay
596 or similar effects by modify terminal contents in refresh_begin, and
597 restoring them in refresh_end. The built-in overlay and selection display
598 code is run after this hook, and takes precedence.
599 </dd>
600 <p></p>
601 <dt><strong><a name="item_on_refresh_end__24term">on_refresh_end $term</a></strong><br />
602 </dt>
603 <dd>
604 Called just after the screen gets redrawn. See <code>on_refresh_begin</code>.
605 </dd>
606 <p></p>
607 <dt><strong><a name="item_on_keyboard_command__24term_2c__24string">on_keyboard_command $term, $string</a></strong><br />
608 </dt>
609 <dd>
610 Called whenever the user presses a key combination that has a
611 <code>perl:string</code> action bound to it (see description of the <strong>keysym</strong>
612 resource in the <code>rxvt(1)</code> manpage).
613 </dd>
614 <p></p>
615 <dt><strong><a name="item_on_x_event__24term_2c__24event">on_x_event $term, $event</a></strong><br />
616 </dt>
617 <dd>
618 Called on every X event received on the vt window (and possibly other
619 windows). Should only be used as a last resort. Most event structure
620 members are not passed.
621 </dd>
622 <p></p>
623 <dt><strong><a name="item_on_focus_in__24term">on_focus_in $term</a></strong><br />
624 </dt>
625 <dd>
626 Called whenever the window gets the keyboard focus, before rxvt-unicode
627 does focus in processing.
628 </dd>
629 <p></p>
630 <dt><strong><a name="item_on_focus_out__24term">on_focus_out $term</a></strong><br />
631 </dt>
632 <dd>
633 Called wheneever the window loses keyboard focus, before rxvt-unicode does
634 focus out processing.
635 </dd>
636 <p></p>
637 <dt><strong><a name="item_on_configure_notify__24term_2c__24event">on_configure_notify $term, $event</a></strong><br />
638 </dt>
639 <dt><strong><a name="item_on_key_press__24term_2c__24event_2c__24keysym_2c__">on_key_press $term, $event, $keysym, $octets</a></strong><br />
640 </dt>
641 <dt><strong><a name="item_on_key_release__24term_2c__24event_2c__24keysym">on_key_release $term, $event, $keysym</a></strong><br />
642 </dt>
643 <dt><strong><a name="item_on_button_press__24term_2c__24event">on_button_press $term, $event</a></strong><br />
644 </dt>
645 <dt><strong><a name="item_on_button_release__24term_2c__24event">on_button_release $term, $event</a></strong><br />
646 </dt>
647 <dt><strong><a name="item_on_motion_notify__24term_2c__24event">on_motion_notify $term, $event</a></strong><br />
648 </dt>
649 <dt><strong><a name="item_on_map_notify__24term_2c__24event">on_map_notify $term, $event</a></strong><br />
650 </dt>
651 <dt><strong><a name="item_on_unmap_notify__24term_2c__24event">on_unmap_notify $term, $event</a></strong><br />
652 </dt>
653 <dd>
654 Called whenever the corresponding X event is received for the terminal If
655 the hook returns true, then the even will be ignored by rxvt-unicode.
656 </dd>
657 <dd>
658 <p>The event is a hash with most values as named by Xlib (see the XEvent
659 manpage), with the additional members <code>row</code> and <code>col</code>, which are the row
660 and column under the mouse cursor.</p>
661 </dd>
662 <dd>
663 <p><code>on_key_press</code> additionally receives the string rxvt-unicode would
664 output, if any, in locale-specific encoding.</p>
665 </dd>
666 <dd>
667 <p>subwindow.</p>
668 </dd>
669 <p></p>
670 <dt><strong><a name="item_on_client_message__24term_2c__24event">on_client_message $term, $event</a></strong><br />
671 </dt>
672 <dt><strong><a name="item_on_wm_protocols__24term_2c__24event">on_wm_protocols $term, $event</a></strong><br />
673 </dt>
674 <dt><strong><a name="item_on_wm_delete_window__24term_2c__24event">on_wm_delete_window $term, $event</a></strong><br />
675 </dt>
676 <dd>
677 Called when various types of ClientMessage events are received (all with
678 format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
679 </dd>
680 <p></p></dl>
681 <p>
682 </p>
683 <h2><a name="variables_in_the_urxvt_package">Variables in the <code>urxvt</code> Package</a></h2>
684 <dl>
685 <dt><strong><a name="item__24urxvt_3a_3alibdir">$urxvt::LIBDIR</a></strong><br />
686 </dt>
687 <dd>
688 The rxvt-unicode library directory, where, among other things, the perl
689 modules and scripts are stored.
690 </dd>
691 <p></p>
692 <dt><strong><a name="item__24urxvt_3a_3aresclass_2c__24urxvt_3a_3aresclass">$urxvt::RESCLASS, $urxvt::RESCLASS</a></strong><br />
693 </dt>
694 <dd>
695 The resource class and name rxvt-unicode uses to look up X resources.
696 </dd>
697 <p></p>
698 <dt><strong><a name="item__24urxvt_3a_3arxvtname">$urxvt::RXVTNAME</a></strong><br />
699 </dt>
700 <dd>
701 The basename of the installed binaries, usually <code>urxvt</code>.
702 </dd>
703 <p></p>
704 <dt><strong><a name="item__24urxvt_3a_3aterm">$urxvt::TERM</a></strong><br />
705 </dt>
706 <dd>
707 The current terminal. This variable stores the current <code>urxvt::term</code>
708 object, whenever a callback/hook is executing.
709 </dd>
710 <p></p>
711 <dt><strong><a name="item__40urxvt_3a_3aterm_init">@urxvt::TERM_INIT</a></strong><br />
712 </dt>
713 <dd>
714 All coderefs in this array will be called as methods of the next newly
715 created <code>urxvt::term</code> object (during the <code>on_init</code> phase). The array
716 gets cleared before the codereferences that were in it are being executed,
717 so coderefs can push themselves onto it again if they so desire.
718 </dd>
719 <dd>
720 <p>This complements to the perl-eval commandline option, but gets executed
721 first.</p>
722 </dd>
723 <p></p>
724 <dt><strong><a name="item__40urxvt_3a_3aterm_ext">@urxvt::TERM_EXT</a></strong><br />
725 </dt>
726 <dd>
727 Works similar to <code>@TERM_INIT</code>, but contains perl package/class names, which
728 get registered as normal extensions after calling the hooks in <code>@TERM_INIT</code>
729 but before other extensions. Gets cleared just like <code>@TERM_INIT</code>.
730 </dd>
731 <p></p></dl>
732 <p>
733 </p>
734 <h2><a name="functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></h2>
735 <dl>
736 <dt><strong><a name="item_urxvt_3a_3afatal__24errormessage">urxvt::fatal $errormessage</a></strong><br />
737 </dt>
738 <dd>
739 Fatally aborts execution with the given error message. Avoid at all
740 costs! The only time this is acceptable is when the terminal process
741 starts up.
742 </dd>
743 <p></p>
744 <dt><strong><a name="item_urxvt_3a_3awarn__24string">urxvt::warn $string</a></strong><br />
745 </dt>
746 <dd>
747 Calls <code>rxvt_warn</code> with the given string which should not include a
748 newline. The module also overwrites the <code>warn</code> builtin with a function
749 that calls this function.
750 </dd>
751 <dd>
752 <p>Using this function has the advantage that its output ends up in the
753 correct place, e.g. on stderr of the connecting urxvtc client.</p>
754 </dd>
755 <dd>
756 <p>Messages have a size limit of 1023 bytes currently.</p>
757 </dd>
758 <p></p>
759 <dt><strong><a name="item__24time__3d_urxvt_3a_3anow">$time = urxvt::NOW</a></strong><br />
760 </dt>
761 <dd>
762 Returns the ``current time'' (as per the event loop).
763 </dd>
764 <p></p>
765 <dt><strong><a name="item_urxvt_3a_3acurrenttime">urxvt::CurrentTime</a></strong><br />
766 </dt>
767 <dt><strong><a name="item_urxvt_3a_3ashiftmask_2c_lockmask_2c_controlmask_2c">urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
768 Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
769 Button4Mask, Button5Mask, AnyModifier</a></strong><br />
770 </dt>
771 <dt><strong><a name="item_urxvt_3a_3anoeventmask_2c_keypressmask_2c_keyrelea">urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
772 ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
773 PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
774 Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
775 KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
776 ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
777 FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask</a></strong><br />
778 </dt>
779 <dt><strong><a name="item_urxvt_3a_3akeypress_2c_keyrelease_2c_buttonpress_2">urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
780 EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
781 GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
782 UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
783 ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
784 CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
785 SelectionNotify, ColormapNotify, ClientMessage, MappingNotify</a></strong><br />
786 </dt>
787 <dd>
788 Various constants for use in X calls and event processing.
789 </dd>
790 <p></p></dl>
791 <p>
792 </p>
793 <h2><a name="rendition">RENDITION</a></h2>
794 <p>Rendition bitsets contain information about colour, font, font styles and
795 similar information for each screen cell.</p>
796 <p>The following ``macros'' deal with changes in rendition sets. You should
797 never just create a bitset, you should always modify an existing one,
798 as they contain important information required for correct operation of
799 rxvt-unicode.</p>
800 <dl>
801 <dt><strong><a name="item__24rend__3d_urxvt_3a_3adefault_rstyle">$rend = urxvt::DEFAULT_RSTYLE</a></strong><br />
802 </dt>
803 <dd>
804 Returns the default rendition, as used when the terminal is starting up or
805 being reset. Useful as a base to start when creating renditions.
806 </dd>
807 <p></p>
808 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aoverlay_rstyle">$rend = urxvt::OVERLAY_RSTYLE</a></strong><br />
809 </dt>
810 <dd>
811 Return the rendition mask used for overlays by default.
812 </dd>
813 <p></p>
814 <dt><strong><a name="item__24rendbit__3d_urxvt_3a_3ars_bold_2c_rs_italic_2c_">$rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline</a></strong><br />
815 </dt>
816 <dd>
817 Return the bit that enabled bold, italic, blink, reverse-video and
818 underline, respectively. To enable such a style, just logically OR it into
819 the bitset.
820 </dd>
821 <p></p>
822 <dt><strong><a name="item__24foreground__3d_urxvt_3a_3aget_basefg__24rend">$foreground = urxvt::GET_BASEFG $rend</a></strong><br />
823 </dt>
824 <dt><strong><a name="item__24background__3d_urxvt_3a_3aget_basebg__24rend">$background = urxvt::GET_BASEBG $rend</a></strong><br />
825 </dt>
826 <dd>
827 Return the foreground/background colour index, respectively.
828 </dd>
829 <p></p>
830 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_fgcolor__24rend_2c__24n">$rend = urxvt::SET_FGCOLOR $rend, $new_colour</a></strong><br />
831 </dt>
832 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_bgcolor__24rend_2c__24n">$rend = urxvt::SET_BGCOLOR $rend, $new_colour</a></strong><br />
833 </dt>
834 <dd>
835 Replace the foreground/background colour in the rendition mask with the
836 specified one.
837 </dd>
838 <p></p>
839 <dt><strong><a name="item__24value__3d_urxvt_3a_3aget_custom__24rend">$value = urxvt::GET_CUSTOM $rend</a></strong><br />
840 </dt>
841 <dd>
842 Return the ``custom'' value: Every rendition has 5 bits for use by
843 extensions. They can be set and changed as you like and are initially
844 zero.
845 </dd>
846 <p></p>
847 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_custom__24rend_2c__24ne">$rend = urxvt::SET_CUSTOM $rend, $new_value</a></strong><br />
848 </dt>
849 <dd>
850 Change the custom value.
851 </dd>
852 <p></p></dl>
853 <p>
854 </p>
855 <h2><a name="the_urxvt__anyevent_class">The <code>urxvt::anyevent</code> Class</a></h2>
856 <p>The sole purpose of this class is to deliver an interface to the
857 <code>AnyEvent</code> module - any module using it will work inside urxvt without
858 further programming. The only exception is that you cannot wait on
859 condition variables, but non-blocking condvar use is ok. What this means
860 is that you cannot use blocking APIs, but the non-blocking variant should
861 work.</p>
862 <p>
863 </p>
864 <h2><a name="the_urxvt__term_class">The <code>urxvt::term</code> Class</a></h2>
865 <dl>
866 <dt><strong><a name="item__24term__3d_new_urxvt_3a_3aterm__24envhashref_2c__">$term = new urxvt::term $envhashref, $rxvtname, [arg...]</a></strong><br />
867 </dt>
868 <dd>
869 Creates a new terminal, very similar as if you had started it with system
870 <code>$rxvtname, arg...</code>. <code>$envhashref</code> must be a reference to a <code>%ENV</code>-like
871 hash which defines the environment of the new terminal.
872 </dd>
873 <dd>
874 <p>Croaks (and probably outputs an error message) if the new instance
875 couldn't be created. Returns <code>undef</code> if the new instance didn't
876 initialise perl, and the terminal object otherwise. The <code>init</code> and
877 <a href="#item_start"><code>start</code></a> hooks will be called during this call.</p>
878 </dd>
879 <p></p>
880 <dt><strong><a name="item_destroy">$term-&gt;destroy</a></strong><br />
881 </dt>
882 <dd>
883 Destroy the terminal object (close the window, free resources
884 etc.). Please note that rxvt will not exit as long as any event
885 watchers (timers, io watchers) are still active.
886 </dd>
887 <p></p>
888 <dt><strong><a name="item_exec_async">$term-&gt;exec_async ($cmd[, @args])</a></strong><br />
889 </dt>
890 <dd>
891 Works like the combination of the <code>fork</code>/<code>exec</code> builtins, which executes
892 (``starts'') programs in the background. This function takes care of setting
893 the user environment before exec'ing the command (e.g. <code>PATH</code>) and should
894 be preferred over explicit calls to <code>exec</code> or <code>system</code>.
895 </dd>
896 <dd>
897 <p>Returns the pid of the subprocess or <code>undef</code> on error.</p>
898 </dd>
899 <p></p>
900 <dt><strong><a name="item_option">$isset = $term-&gt;option ($optval[, $set])</a></strong><br />
901 </dt>
902 <dd>
903 Returns true if the option specified by <code>$optval</code> is enabled, and
904 optionally change it. All option values are stored by name in the hash
905 <code>%urxvt::OPTION</code>. Options not enabled in this binary are not in the hash.
906 </dd>
907 <dd>
908 <p>Here is a a likely non-exhaustive list of option names, please see the
909 source file <em>/src/optinc.h</em> to see the actual list:</p>
910 </dd>
911 <dd>
912 <pre>
913 borderLess console cursorBlink cursorUnderline hold iconic insecure
914 intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
915 override-redirect pastableTabs pointerBlank reverseVideo scrollBar
916 scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
917 scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
918 transparent tripleclickwords utmpInhibit visualBell</pre>
919 </dd>
920 <p></p>
921 <dt><strong><a name="item_resource">$value = $term-&gt;resource ($name[, $newval])</a></strong><br />
922 </dt>
923 <dd>
924 Returns the current resource value associated with a given name and
925 optionally sets a new value. Setting values is most useful in the <code>init</code>
926 hook. Unset resources are returned and accepted as <code>undef</code>.
927 </dd>
928 <dd>
929 <p>The new value must be properly encoded to a suitable character encoding
930 before passing it to this method. Similarly, the returned value may need
931 to be converted from the used encoding to text.</p>
932 </dd>
933 <dd>
934 <p>Resource names are as defined in <em>src/rsinc.h</em>. Colours can be specified
935 as resource names of the form <code>color+&lt;index&gt;</code>, e.g. <code>color+5</code>. (will
936 likely change).</p>
937 </dd>
938 <dd>
939 <p>Please note that resource strings will currently only be freed when the
940 terminal is destroyed, so changing options frequently will eat memory.</p>
941 </dd>
942 <dd>
943 <p>Here is a a likely non-exhaustive list of resource names, not all of which
944 are supported in every build, please see the source file <em>/src/rsinc.h</em>
945 to see the actual list:</p>
946 </dd>
947 <dd>
948 <pre>
949 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
950 borderLess color cursorBlink cursorUnderline cutchars delete_key
951 display_name embed ext_bwidth fade font geometry hold iconName
952 imFont imLocale inputMethod insecure int_bwidth intensityStyles
953 italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
954 mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
955 perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
956 preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
957 scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
958 scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
959 secondaryScreen secondaryScroll selectstyle shade term_name title
960 transient_for transparent transparent_all tripleclickwords utmpInhibit
961 visualBell</pre>
962 </dd>
963 <p></p>
964 <dt><strong><a name="item_x_resource">$value = $term-&gt;x_resource ($pattern)</a></strong><br />
965 </dt>
966 <dd>
967 Returns the X-Resource for the given pattern, excluding the program or
968 class name, i.e. <a href="#item_x_resource"><code>$term-&gt;x_resource (&quot;boldFont&quot;)</code></a> should return the
969 same value as used by this instance of rxvt-unicode. Returns <code>undef</code> if no
970 resource with that pattern exists.
971 </dd>
972 <dd>
973 <p>This method should only be called during the <code>on_start</code> hook, as there is
974 only one resource database per display, and later invocations might return
975 the wrong resources.</p>
976 </dd>
977 <p></p>
978 <dt><strong><a name="item_parse_keysym">$success = $term-&gt;parse_keysym ($keysym_spec, $command_string)</a></strong><br />
979 </dt>
980 <dd>
981 Adds a keymap translation exactly as specified via a resource. See the
982 <code>keysym</code> resource in the <code>rxvt(1)</code> manpage.
983 </dd>
984 <p></p>
985 <dt><strong><a name="item_rstyle">$rend = $term-&gt;rstyle ([$new_rstyle])</a></strong><br />
986 </dt>
987 <dd>
988 Return and optionally change the current rendition. Text that is output by
989 the terminal application will use this style.
990 </dd>
991 <p></p>
992 <dt><strong><a name="item_screen_cur">($row, $col) = $term-&gt;screen_cur ([$row, $col])</a></strong><br />
993 </dt>
994 <dd>
995 Return the current coordinates of the text cursor position and optionally
996 set it (which is usually bad as applications don't expect that).
997 </dd>
998 <p></p>
999 <dt><strong><a name="item_selection_mark">($row, $col) = $term-&gt;selection_mark ([$row, $col])</a></strong><br />
1000 </dt>
1001 <dt><strong><a name="item_selection_beg">($row, $col) = $term-&gt;selection_beg ([$row, $col])</a></strong><br />
1002 </dt>
1003 <dt><strong><a name="item_selection_end">($row, $col) = $term-&gt;selection_end ([$row, $col])</a></strong><br />
1004 </dt>
1005 <dd>
1006 Return the current values of the selection mark, begin or end positions,
1007 and optionally set them to new values.
1008 </dd>
1009 <p></p>
1010 <dt><strong><a name="item_selection_make">$term-&gt;selection_make ($eventtime[, $rectangular])</a></strong><br />
1011 </dt>
1012 <dd>
1013 Tries to make a selection as set by <a href="#item_selection_beg"><code>selection_beg</code></a> and
1014 <a href="#item_selection_end"><code>selection_end</code></a>. If <code>$rectangular</code> is true (default: false), a
1015 rectangular selection will be made. This is the prefered function to make
1016 a selection.
1017 </dd>
1018 <p></p>
1019 <dt><strong><a name="item_selection_grab">$success = $term-&gt;selection_grab ($eventtime)</a></strong><br />
1020 </dt>
1021 <dd>
1022 Try to request the primary selection text from the server (for example, as
1023 set by the next method). No visual feedback will be given. This function
1024 is mostly useful from within <code>on_sel_grab</code> hooks.
1025 </dd>
1026 <p></p>
1027 <dt><strong>$oldtext = $term-&gt;selection ([$newtext])</strong><br />
1028 </dt>
1029 <dd>
1030 Return the current selection text and optionally replace it by <code>$newtext</code>.
1031 </dd>
1032 <p></p>
1033 <dt><strong><a name="item_overlay_simple">$term-&gt;overlay_simple ($x, $y, $text)</a></strong><br />
1034 </dt>
1035 <dd>
1036 Create a simple multi-line overlay box. See the next method for details.
1037 </dd>
1038 <p></p>
1039 <dt><strong><a name="item_overlay">$term-&gt;overlay ($x, $y, $width, $height[, $rstyle[, $border]])</a></strong><br />
1040 </dt>
1041 <dd>
1042 Create a new (empty) overlay at the given position with the given
1043 width/height. <code>$rstyle</code> defines the initial rendition style
1044 (default: <code>OVERLAY_RSTYLE</code>).
1045 </dd>
1046 <dd>
1047 <p>If <code>$border</code> is <code>2</code> (default), then a decorative border will be put
1048 around the box.</p>
1049 </dd>
1050 <dd>
1051 <p>If either <code>$x</code> or <code>$y</code> is negative, then this is counted from the
1052 right/bottom side, respectively.</p>
1053 </dd>
1054 <dd>
1055 <p>This method returns an urxvt::overlay object. The overlay will be visible
1056 as long as the perl object is referenced.</p>
1057 </dd>
1058 <dd>
1059 <p>The methods currently supported on <code>urxvt::overlay</code> objects are:</p>
1060 </dd>
1061 <dl>
1062 <dt><strong><a name="item_set">$overlay-&gt;set ($x, $y, $text, $rend)</a></strong><br />
1063 </dt>
1064 <dd>
1065 Similar to <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> and <a href="#item_row_r"><code>$term-&gt;ROW_r</code></a> in that it puts
1066 text in rxvt-unicode's special encoding and an array of rendition values
1067 at a specific position inside the overlay.
1068 </dd>
1069 <p></p>
1070 <dt><strong><a name="item_hide">$overlay-&gt;hide</a></strong><br />
1071 </dt>
1072 <dd>
1073 If visible, hide the overlay, but do not destroy it.
1074 </dd>
1075 <p></p>
1076 <dt><strong><a name="item_show">$overlay-&gt;show</a></strong><br />
1077 </dt>
1078 <dd>
1079 If hidden, display the overlay again.
1080 </dd>
1081 <p></p></dl>
1082 <dt><strong>$popup = $term-&gt;popup ($event)</strong><br />
1083 </dt>
1084 <dd>
1085 Creates a new <code>urxvt::popup</code> object that implements a popup menu. The
1086 <code>$event</code> <em>must</em> be the event causing the menu to pop up (a button event,
1087 currently).
1088 </dd>
1089 <p></p>
1090 <dt><strong><a name="item_strwidth">$cellwidth = $term-&gt;strwidth ($string)</a></strong><br />
1091 </dt>
1092 <dd>
1093 Returns the number of screen-cells this string would need. Correctly
1094 accounts for wide and combining characters.
1095 </dd>
1096 <p></p>
1097 <dt><strong><a name="item_locale_encode">$octets = $term-&gt;locale_encode ($string)</a></strong><br />
1098 </dt>
1099 <dd>
1100 Convert the given text string into the corresponding locale encoding.
1101 </dd>
1102 <p></p>
1103 <dt><strong><a name="item_locale_decode">$string = $term-&gt;locale_decode ($octets)</a></strong><br />
1104 </dt>
1105 <dd>
1106 Convert the given locale-encoded octets into a perl string.
1107 </dd>
1108 <p></p>
1109 <dt><strong><a name="item_scr_xor_span">$term-&gt;scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])</a></strong><br />
1110 </dt>
1111 <dd>
1112 XORs the rendition values in the given span with the provided value
1113 (default: <code>RS_RVid</code>), which <em>MUST NOT</em> contain font styles. Useful in
1114 refresh hooks to provide effects similar to the selection.
1115 </dd>
1116 <p></p>
1117 <dt><strong><a name="item_scr_xor_rect">$term-&gt;scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])</a></strong><br />
1118 </dt>
1119 <dd>
1120 Similar to <a href="#item_scr_xor_span"><code>scr_xor_span</code></a>, but xors a rectangle instead. Trailing
1121 whitespace will additionally be xored with the <code>$rstyle2</code>, which defaults
1122 to <code>RS_RVid | RS_Uline</code>, which removes reverse video again and underlines
1123 it instead. Both styles <em>MUST NOT</em> contain font styles.
1124 </dd>
1125 <p></p>
1126 <dt><strong><a name="item_scr_bell">$term-&gt;scr_bell</a></strong><br />
1127 </dt>
1128 <dd>
1129 Ring the bell!
1130 </dd>
1131 <p></p>
1132 <dt><strong><a name="item_scr_add_lines">$term-&gt;scr_add_lines ($string)</a></strong><br />
1133 </dt>
1134 <dd>
1135 Write the given text string to the screen, as if output by the application
1136 running inside the terminal. It may not contain command sequences (escape
1137 codes), but is free to use line feeds, carriage returns and tabs. The
1138 string is a normal text string, not in locale-dependent encoding.
1139 </dd>
1140 <dd>
1141 <p>Normally its not a good idea to use this function, as programs might be
1142 confused by changes in cursor position or scrolling. Its useful inside a
1143 <code>on_add_lines</code> hook, though.</p>
1144 </dd>
1145 <p></p>
1146 <dt><strong><a name="item_cmd_parse">$term-&gt;cmd_parse ($octets)</a></strong><br />
1147 </dt>
1148 <dd>
1149 Similar to <a href="#item_scr_add_lines"><code>scr_add_lines</code></a>, but the argument must be in the
1150 locale-specific encoding of the terminal and can contain command sequences
1151 (escape codes) that will be interpreted.
1152 </dd>
1153 <p></p>
1154 <dt><strong><a name="item_tt_write">$term-&gt;tt_write ($octets)</a></strong><br />
1155 </dt>
1156 <dd>
1157 Write the octets given in <code>$data</code> to the tty (i.e. as program input). To
1158 pass characters instead of octets, you should convert your strings first
1159 to the locale-specific encoding using <a href="#item_locale_encode"><code>$term-&gt;locale_encode</code></a>.
1160 </dd>
1161 <p></p>
1162 <dt><strong><a name="item_pty_ev_events">$old_events = $term-&gt;pty_ev_events ([$new_events])</a></strong><br />
1163 </dt>
1164 <dd>
1165 Replaces the event mask of the pty watcher by the given event mask. Can
1166 be used to suppress input and output handling to the pty/tty. See the
1167 description of <a href="#item_events"><code>urxvt::timer-&gt;events</code></a>. Make sure to always restore
1168 the previous value.
1169 </dd>
1170 <p></p>
1171 <dt><strong><a name="item_parent">$windowid = $term-&gt;parent</a></strong><br />
1172 </dt>
1173 <dd>
1174 Return the window id of the toplevel window.
1175 </dd>
1176 <p></p>
1177 <dt><strong><a name="item_vt">$windowid = $term-&gt;vt</a></strong><br />
1178 </dt>
1179 <dd>
1180 Return the window id of the terminal window.
1181 </dd>
1182 <p></p>
1183 <dt><strong><a name="item_vt_emask_add">$term-&gt;vt_emask_add ($x_event_mask)</a></strong><br />
1184 </dt>
1185 <dd>
1186 Adds the specified events to the vt event mask. Useful e.g. when you want
1187 to receive pointer events all the times:
1188 </dd>
1189 <dd>
1190 <pre>
1191 $term-&gt;vt_emask_add (urxvt::PointerMotionMask);</pre>
1192 </dd>
1193 <p></p>
1194 <dt><strong><a name="item_width">$window_width = $term-&gt;width</a></strong><br />
1195 </dt>
1196 <dt><strong><a name="item_height">$window_height = $term-&gt;height</a></strong><br />
1197 </dt>
1198 <dt><strong><a name="item_fwidth">$font_width = $term-&gt;fwidth</a></strong><br />
1199 </dt>
1200 <dt><strong><a name="item_fheight">$font_height = $term-&gt;fheight</a></strong><br />
1201 </dt>
1202 <dt><strong><a name="item_fbase">$font_ascent = $term-&gt;fbase</a></strong><br />
1203 </dt>
1204 <dt><strong><a name="item_nrow">$terminal_rows = $term-&gt;nrow</a></strong><br />
1205 </dt>
1206 <dt><strong><a name="item_ncol">$terminal_columns = $term-&gt;ncol</a></strong><br />
1207 </dt>
1208 <dt><strong><a name="item_focus">$has_focus = $term-&gt;focus</a></strong><br />
1209 </dt>
1210 <dt><strong><a name="item_mapped">$is_mapped = $term-&gt;mapped</a></strong><br />
1211 </dt>
1212 <dt><strong><a name="item_savelines">$max_scrollback = $term-&gt;saveLines</a></strong><br />
1213 </dt>
1214 <dt><strong><a name="item_total_rows">$nrow_plus_saveLines = $term-&gt;total_rows</a></strong><br />
1215 </dt>
1216 <dt><strong><a name="item_top_row">$topmost_scrollback_row = $term-&gt;top_row</a></strong><br />
1217 </dt>
1218 <dd>
1219 Return various integers describing terminal characteristics.
1220 </dd>
1221 <p></p>
1222 <dt><strong><a name="item_display_id">$x_display = $term-&gt;display_id</a></strong><br />
1223 </dt>
1224 <dd>
1225 Return the DISPLAY used by rxvt-unicode.
1226 </dd>
1227 <p></p>
1228 <dt><strong><a name="item_locale">$lc_ctype = $term-&gt;locale</a></strong><br />
1229 </dt>
1230 <dd>
1231 Returns the LC_CTYPE category string used by this rxvt-unicode.
1232 </dd>
1233 <p></p>
1234 <dt><strong><a name="item_env">$env = $term-&gt;env</a></strong><br />
1235 </dt>
1236 <dd>
1237 Returns a copy of the environment in effect for the terminal as a hashref
1238 similar to <code>\%ENV</code>.
1239 </dd>
1240 <p></p>
1241 <dt><strong><a name="item_modlevel3mask">$modifiermask = $term-&gt;ModLevel3Mask</a></strong><br />
1242 </dt>
1243 <dt><strong><a name="item_modmetamask">$modifiermask = $term-&gt;ModMetaMask</a></strong><br />
1244 </dt>
1245 <dt><strong><a name="item_modnumlockmask">$modifiermask = $term-&gt;ModNumLockMask</a></strong><br />
1246 </dt>
1247 <dd>
1248 Return the modifier masks corresponding to the ``ISO Level 3 Shift'' (often
1249 AltGr), the meta key (often Alt) and the num lock key, if applicable.
1250 </dd>
1251 <p></p>
1252 <dt><strong><a name="item_view_start">$view_start = $term-&gt;view_start ([$newvalue])</a></strong><br />
1253 </dt>
1254 <dd>
1255 Returns the row number of the topmost displayed line. Maximum value is
1256 <code>0</code>, which displays the normal terminal contents. Lower values scroll
1257 this many lines into the scrollback buffer.
1258 </dd>
1259 <p></p>
1260 <dt><strong><a name="item_want_refresh">$term-&gt;want_refresh</a></strong><br />
1261 </dt>
1262 <dd>
1263 Requests a screen refresh. At the next opportunity, rxvt-unicode will
1264 compare the on-screen display with its stored representation. If they
1265 differ, it redraws the differences.
1266 </dd>
1267 <dd>
1268 <p>Used after changing terminal contents to display them.</p>
1269 </dd>
1270 <p></p>
1271 <dt><strong><a name="item_row_t">$text = $term-&gt;ROW_t ($row_number[, $new_text[, $start_col]])</a></strong><br />
1272 </dt>
1273 <dd>
1274 Returns the text of the entire row with number <code>$row_number</code>. Row <code>0</code>
1275 is the topmost terminal line, row <code>$term-&gt;$ncol-1</code> is the bottommost
1276 terminal line. The scrollback buffer starts at line <code>-1</code> and extends to
1277 line <code>-$term-&gt;nsaved</code>. Nothing will be returned if a nonexistent line
1278 is requested.
1279 </dd>
1280 <dd>
1281 <p>If <code>$new_text</code> is specified, it will replace characters in the current
1282 line, starting at column <code>$start_col</code> (default <code>0</code>), which is useful
1283 to replace only parts of a line. The font index in the rendition will
1284 automatically be updated.</p>
1285 </dd>
1286 <dd>
1287 <p><a href="#item__24text"><code>$text</code></a> is in a special encoding: tabs and wide characters that use more
1288 than one cell when displayed are padded with urxvt::NOCHAR characters
1289 (<code>chr 65535</code>). Characters with combining characters and other characters
1290 that do not fit into the normal tetx encoding will be replaced with
1291 characters in the private use area.</p>
1292 </dd>
1293 <dd>
1294 <p>You have to obey this encoding when changing text. The advantage is
1295 that <code>substr</code> and similar functions work on screen cells and not on
1296 characters.</p>
1297 </dd>
1298 <dd>
1299 <p>The methods <a href="#item_special_encode"><code>$term-&gt;special_encode</code></a> and <a href="#item_special_decode"><code>$term-&gt;special_decode</code></a>
1300 can be used to convert normal strings into this encoding and vice versa.</p>
1301 </dd>
1302 <p></p>
1303 <dt><strong><a name="item_row_r">$rend = $term-&gt;ROW_r ($row_number[, $new_rend[, $start_col]])</a></strong><br />
1304 </dt>
1305 <dd>
1306 Like <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a>, but returns an arrayref with rendition
1307 bitsets. Rendition bitsets contain information about colour, font, font
1308 styles and similar information. See also <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a>.
1309 </dd>
1310 <dd>
1311 <p>When setting rendition, the font mask will be ignored.</p>
1312 </dd>
1313 <dd>
1314 <p>See the section on RENDITION, above.</p>
1315 </dd>
1316 <p></p>
1317 <dt><strong><a name="item_row_l">$length = $term-&gt;ROW_l ($row_number[, $new_length])</a></strong><br />
1318 </dt>
1319 <dd>
1320 Returns the number of screen cells that are in use (``the line
1321 length''). Unlike the urxvt core, this returns <a href="#item_ncol"><code>$term-&gt;ncol</code></a> if the
1322 line is joined with the following one.
1323 </dd>
1324 <p></p>
1325 <dt><strong><a name="item_is_longer">$bool = $term-&gt;is_longer ($row_number)</a></strong><br />
1326 </dt>
1327 <dd>
1328 Returns true if the row is part of a multiple-row logical ``line'' (i.e.
1329 joined with the following row), which means all characters are in use
1330 and it is continued on the next row (and possibly a continuation of the
1331 previous row(s)).
1332 </dd>
1333 <p></p>
1334 <dt><strong><a name="item_line">$line = $term-&gt;line ($row_number)</a></strong><br />
1335 </dt>
1336 <dd>
1337 Create and return a new <code>urxvt::line</code> object that stores information
1338 about the logical line that row <code>$row_number</code> is part of. It supports the
1339 following methods:
1340 </dd>
1341 <dl>
1342 <dt><strong><a name="item_t">$text = $line-&gt;t ([$new_text])</a></strong><br />
1343 </dt>
1344 <dd>
1345 Returns or replaces the full text of the line, similar to <a href="#item_row_t"><code>ROW_t</code></a>
1346 </dd>
1347 <p></p>
1348 <dt><strong><a name="item_r">$rend = $line-&gt;r ([$new_rend])</a></strong><br />
1349 </dt>
1350 <dd>
1351 Returns or replaces the full rendition array of the line, similar to <a href="#item_row_r"><code>ROW_r</code></a>
1352 </dd>
1353 <p></p>
1354 <dt><strong><a name="item_l">$length = $line-&gt;l</a></strong><br />
1355 </dt>
1356 <dd>
1357 Returns the length of the line in cells, similar to <a href="#item_row_l"><code>ROW_l</code></a>.
1358 </dd>
1359 <p></p>
1360 <dt><strong><a name="item_beg">$rownum = $line-&gt;beg</a></strong><br />
1361 </dt>
1362 <dt><strong><a name="item_end">$rownum = $line-&gt;end</a></strong><br />
1363 </dt>
1364 <dd>
1365 Return the row number of the first/last row of the line, respectively.
1366 </dd>
1367 <p></p>
1368 <dt><strong><a name="item_offset_of">$offset = $line-&gt;offset_of ($row, $col)</a></strong><br />
1369 </dt>
1370 <dd>
1371 Returns the character offset of the given row|col pair within the logical
1372 line. Works for rows outside the line, too, and returns corresponding
1373 offsets outside the string.
1374 </dd>
1375 <p></p>
1376 <dt><strong><a name="item_coord_of">($row, $col) = $line-&gt;coord_of ($offset)</a></strong><br />
1377 </dt>
1378 <dd>
1379 Translates a string offset into terminal coordinates again.
1380 </dd>
1381 <p></p></dl>
1382 <dt><strong><a name="item_special_encode">$text = $term-&gt;special_encode $string</a></strong><br />
1383 </dt>
1384 <dd>
1385 Converts a perl string into the special encoding used by rxvt-unicode,
1386 where one character corresponds to one screen cell. See
1387 <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.
1388 </dd>
1389 <p></p>
1390 <dt><strong><a name="item_special_decode">$string = $term-&gt;special_decode $text</a></strong><br />
1391 </dt>
1392 <dd>
1393 Converts rxvt-unicodes text reprsentation into a perl string. See
1394 <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.
1395 </dd>
1396 <p></p>
1397 <dt><strong><a name="item_grab_button">$success = $term-&gt;grab_button ($button, $modifiermask)</a></strong><br />
1398 </dt>
1399 <dd>
1400 Registers a synchronous button grab. See the XGrabButton manpage.
1401 </dd>
1402 <p></p>
1403 <dt><strong><a name="item_grab">$success = $term-&gt;grab ($eventtime[, $sync])</a></strong><br />
1404 </dt>
1405 <dd>
1406 Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
1407 synchronous (<code>$sync</code> is true). Also remembers the grab timestampe.
1408 </dd>
1409 <p></p>
1410 <dt><strong><a name="item_allow_events_async">$term-&gt;allow_events_async</a></strong><br />
1411 </dt>
1412 <dd>
1413 Calls XAllowEvents with AsyncBoth for the most recent grab.
1414 </dd>
1415 <p></p>
1416 <dt><strong><a name="item_allow_events_sync">$term-&gt;allow_events_sync</a></strong><br />
1417 </dt>
1418 <dd>
1419 Calls XAllowEvents with SyncBoth for the most recent grab.
1420 </dd>
1421 <p></p>
1422 <dt><strong><a name="item_allow_events_replay">$term-&gt;allow_events_replay</a></strong><br />
1423 </dt>
1424 <dd>
1425 Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
1426 recent grab.
1427 </dd>
1428 <p></p>
1429 <dt><strong><a name="item_ungrab">$term-&gt;ungrab</a></strong><br />
1430 </dt>
1431 <dd>
1432 Calls XUngrab for the most recent grab. Is called automatically on
1433 evaluation errors, as it is better to lose the grab in the error case as
1434 the session.
1435 </dd>
1436 <p></p></dl>
1437 <p>
1438 </p>
1439 <h2><a name="the_urxvt__popup_class">The <code>urxvt::popup</code> Class</a></h2>
1440 <dl>
1441 <dt><strong><a name="item_add_title">$popup-&gt;add_title ($title)</a></strong><br />
1442 </dt>
1443 <dd>
1444 Adds a non-clickable title to the popup.
1445 </dd>
1446 <p></p>
1447 <dt><strong><a name="item_add_separator">$popup-&gt;add_separator ([$sepchr])</a></strong><br />
1448 </dt>
1449 <dd>
1450 Creates a separator, optionally using the character given as <code>$sepchr</code>.
1451 </dd>
1452 <p></p>
1453 <dt><strong><a name="item_add_button">$popup-&gt;add_button ($text, $cb)</a></strong><br />
1454 </dt>
1455 <dd>
1456 Adds a clickable button to the popup. <code>$cb</code> is called whenever it is
1457 selected.
1458 </dd>
1459 <p></p>
1460 <dt><strong><a name="item_add_toggle">$popup-&gt;add_toggle ($text, $cb, $initial_value)</a></strong><br />
1461 </dt>
1462 <dd>
1463 Adds a toggle/checkbox item to the popup. Teh callback gets called
1464 whenever it gets toggled, with a boolean indicating its value as its first
1465 argument.
1466 </dd>
1467 <p></p>
1468 <dt><strong>$popup-&gt;show</strong><br />
1469 </dt>
1470 <dd>
1471 Displays the popup (which is initially hidden).
1472 </dd>
1473 <p></p></dl>
1474 <p>
1475 </p>
1476 <h2><a name="the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></h2>
1477 <p>This class implements timer watchers/events. Time is represented as a
1478 fractional number of seconds since the epoch. Example:</p>
1479 <pre>
1480 $term-&gt;{overlay} = $term-&gt;overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
1481 $term-&gt;{timer} = urxvt::timer
1482 -&gt;new
1483 -&gt;interval (1)
1484 -&gt;cb (sub {
1485 $term-&gt;{overlay}-&gt;set (0, 0,
1486 sprintf &quot;%2d:%02d:%02d&quot;, (localtime urxvt::NOW)[2,1,0]);
1487 });</pre>
1488 <dl>
1489 <dt><strong><a name="item__24timer__3d_new_urxvt_3a_3atimer">$timer = new urxvt::timer</a></strong><br />
1490 </dt>
1491 <dd>
1492 Create a new timer object in started state. It is scheduled to fire
1493 immediately.
1494 </dd>
1495 <p></p>
1496 <dt><strong><a name="item_cb">$timer = $timer-&gt;cb (sub { my ($timer) = @_; ... })</a></strong><br />
1497 </dt>
1498 <dd>
1499 Set the callback to be called when the timer triggers.
1500 </dd>
1501 <p></p>
1502 <dt><strong><a name="item_at">$tstamp = $timer-&gt;at</a></strong><br />
1503 </dt>
1504 <dd>
1505 Return the time this watcher will fire next.
1506 </dd>
1507 <p></p>
1508 <dt><strong>$timer = $timer-&gt;set ($tstamp)</strong><br />
1509 </dt>
1510 <dd>
1511 Set the time the event is generated to $tstamp.
1512 </dd>
1513 <p></p>
1514 <dt><strong><a name="item_interval">$timer = $timer-&gt;interval ($interval)</a></strong><br />
1515 </dt>
1516 <dd>
1517 Normally (and when <code>$interval</code> is <code>0</code>), the timer will automatically
1518 stop after it has fired once. If <code>$interval</code> is non-zero, then the timer
1519 is automatically rescheduled at the given intervals.
1520 </dd>
1521 <p></p>
1522 <dt><strong><a name="item_start">$timer = $timer-&gt;start</a></strong><br />
1523 </dt>
1524 <dd>
1525 Start the timer.
1526 </dd>
1527 <p></p>
1528 <dt><strong>$timer = $timer-&gt;start ($tstamp)</strong><br />
1529 </dt>
1530 <dd>
1531 Set the event trigger time to <code>$tstamp</code> and start the timer.
1532 </dd>
1533 <p></p>
1534 <dt><strong><a name="item_after">$timer = $timer-&gt;after ($delay)</a></strong><br />
1535 </dt>
1536 <dd>
1537 Like <a href="#item_start"><code>start</code></a>, but sets the expiry timer to c&lt;urxvt::NOW + $delay&gt;.
1538 </dd>
1539 <p></p>
1540 <dt><strong><a name="item_stop">$timer = $timer-&gt;stop</a></strong><br />
1541 </dt>
1542 <dd>
1543 Stop the timer.
1544 </dd>
1545 <p></p></dl>
1546 <p>
1547 </p>
1548 <h2><a name="the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></h2>
1549 <p>This class implements io watchers/events. Example:</p>
1550 <pre>
1551 $term-&gt;{socket} = ...
1552 $term-&gt;{iow} = urxvt::iow
1553 -&gt;new
1554 -&gt;fd (fileno $term-&gt;{socket})
1555 -&gt;events (urxvt::EVENT_READ)
1556 -&gt;start
1557 -&gt;cb (sub {
1558 my ($iow, $revents) = @_;
1559 # $revents must be 1 here, no need to check
1560 sysread $term-&gt;{socket}, my $buf, 8192
1561 or end-of-file;
1562 });</pre>
1563 <dl>
1564 <dt><strong><a name="item__24iow__3d_new_urxvt_3a_3aiow">$iow = new urxvt::iow</a></strong><br />
1565 </dt>
1566 <dd>
1567 Create a new io watcher object in stopped state.
1568 </dd>
1569 <p></p>
1570 <dt><strong>$iow = $iow-&gt;cb (sub { my ($iow, $reventmask) = @_; ... })</strong><br />
1571 </dt>
1572 <dd>
1573 Set the callback to be called when io events are triggered. <code>$reventmask</code>
1574 is a bitset as described in the <a href="#item_events"><code>events</code></a> method.
1575 </dd>
1576 <p></p>
1577 <dt><strong><a name="item_fd">$iow = $iow-&gt;fd ($fd)</a></strong><br />
1578 </dt>
1579 <dd>
1580 Set the filedescriptor (not handle) to watch.
1581 </dd>
1582 <p></p>
1583 <dt><strong><a name="item_events">$iow = $iow-&gt;events ($eventmask)</a></strong><br />
1584 </dt>
1585 <dd>
1586 Set the event mask to watch. The only allowed values are
1587 <code>urxvt::EVENT_READ</code> and <code>urxvt::EVENT_WRITE</code>, which might be ORed
1588 together, or <code>urxvt::EVENT_NONE</code>.
1589 </dd>
1590 <p></p>
1591 <dt><strong>$iow = $iow-&gt;start</strong><br />
1592 </dt>
1593 <dd>
1594 Start watching for requested events on the given handle.
1595 </dd>
1596 <p></p>
1597 <dt><strong>$iow = $iow-&gt;stop</strong><br />
1598 </dt>
1599 <dd>
1600 Stop watching for events on the given filehandle.
1601 </dd>
1602 <p></p></dl>
1603 <p>
1604 </p>
1605 <h2><a name="the_urxvt__iw_class">The <code>urxvt::iw</code> Class</a></h2>
1606 <p>This class implements idle watchers, that get called automatically when
1607 the process is idle. They should return as fast as possible, after doing
1608 some useful work.</p>
1609 <dl>
1610 <dt><strong><a name="item__24iw__3d_new_urxvt_3a_3aiw">$iw = new urxvt::iw</a></strong><br />
1611 </dt>
1612 <dd>
1613 Create a new idle watcher object in stopped state.
1614 </dd>
1615 <p></p>
1616 <dt><strong>$iw = $iw-&gt;cb (sub { my ($iw) = @_; ... })</strong><br />
1617 </dt>
1618 <dd>
1619 Set the callback to be called when the watcher triggers.
1620 </dd>
1621 <p></p>
1622 <dt><strong>$timer = $timer-&gt;start</strong><br />
1623 </dt>
1624 <dd>
1625 Start the watcher.
1626 </dd>
1627 <p></p>
1628 <dt><strong>$timer = $timer-&gt;stop</strong><br />
1629 </dt>
1630 <dd>
1631 Stop the watcher.
1632 </dd>
1633 <p></p></dl>
1634 <p>
1635 </p>
1636 <h2><a name="the_urxvt__pw_class">The <code>urxvt::pw</code> Class</a></h2>
1637 <p>This class implements process watchers. They create an event whenever a
1638 process exits, after which they stop automatically.</p>
1639 <pre>
1640 my $pid = fork;
1641 ...
1642 $term-&gt;{pw} = urxvt::pw
1643 -&gt;new
1644 -&gt;start ($pid)
1645 -&gt;cb (sub {
1646 my ($pw, $exit_status) = @_;
1647 ...
1648 });</pre>
1649 <dl>
1650 <dt><strong><a name="item__24pw__3d_new_urxvt_3a_3apw">$pw = new urxvt::pw</a></strong><br />
1651 </dt>
1652 <dd>
1653 Create a new process watcher in stopped state.
1654 </dd>
1655 <p></p>
1656 <dt><strong>$pw = $pw-&gt;cb (sub { my ($pw, $exit_status) = @_; ... })</strong><br />
1657 </dt>
1658 <dd>
1659 Set the callback to be called when the timer triggers.
1660 </dd>
1661 <p></p>
1662 <dt><strong>$pw = $timer-&gt;start ($pid)</strong><br />
1663 </dt>
1664 <dd>
1665 Tells the wqtcher to start watching for process <code>$pid</code>.
1666 </dd>
1667 <p></p>
1668 <dt><strong>$pw = $pw-&gt;stop</strong><br />
1669 </dt>
1670 <dd>
1671 Stop the watcher.
1672 </dd>
1673 <p></p></dl>
1674 <p>
1675 </p>
1676 <hr />
1677 <h1><a name="environment">ENVIRONMENT</a></h1>
1678 <p>
1679 </p>
1680 <h2><a name="urxvt_perl_verbosity">URXVT_PERL_VERBOSITY</a></h2>
1681 <p>This variable controls the verbosity level of the perl extension. Higher
1682 numbers indicate more verbose output.</p>
1683 <dl>
1684 <dt><strong><a name="item__3d_3d_0__2d_fatal_messages">== 0 - fatal messages</a></strong><br />
1685 </dt>
1686 <dt><strong><a name="item__3e_3d_3__2d_script_loading_and_management">&gt;= 3 - script loading and management</a></strong><br />
1687 </dt>
1688 <dt><strong><a name="item__3e_3d10__2d_all_called_hooks">&gt;=10 - all called hooks</a></strong><br />
1689 </dt>
1690 <dt><strong><a name="item__3e_3d11__2d_hook_reutrn_values">&gt;=11 - hook reutrn values</a></strong><br />
1691 </dt>
1692 </dl>
1693 <p>
1694 </p>
1695 <hr />
1696 <h1><a name="author">AUTHOR</a></h1>
1697 <pre>
1698 Marc Lehmann &lt;pcg@goof.com&gt;
1699 <a href="http://software.schmorp.de/pkg/rxvt-unicode">http://software.schmorp.de/pkg/rxvt-unicode</a></pre>
1700
1701 </body>
1702
1703 </html>