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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 evaluation, 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_readline">readline (enabled by default)</a></strong><br />
201 </dt>
202 <dd>
203 A support package that tries to make editing with readline easier. At the
204 moment, it reacts to clicking with the left mouse button by trying to
205 move the text cursor to this position. It does so by generating as many
206 cursor-left or cursor-right keypresses as required (the this only works
207 for programs that correctly support wide characters).
208 </dd>
209 <dd>
210 <p>To avoid too many false positives, this is only done when:</p>
211 </dd>
212 <dl>
213 <dt><strong><a name="item__2d_the_tty_is_in_icanon_state_2e">- the tty is in ICANON state.</a></strong><br />
214 </dt>
215 <dt><strong><a name="item__2d_the_text_cursor_is_visible_2e">- the text cursor is visible.</a></strong><br />
216 </dt>
217 <dt><strong><a name="item__2d_the_primary_screen_is_currently_being_displaye">- the primary screen is currently being displayed.</a></strong><br />
218 </dt>
219 <dt><strong><a name="item_same">- the mouse is on the same (multi-row-) line as the text cursor.</a></strong><br />
220 </dt>
221 </dl>
222 <p>The normal selection mechanism isn't disabled, so quick successive clicks
223 might interfere with selection creation in harmless ways.</p>
224 <dt><strong><a name="item_selection_2dautotransform">selection-autotransform</a></strong><br />
225 </dt>
226 <dd>
227 This selection allows you to do automatic transforms on a selection
228 whenever a selection is made.
229 </dd>
230 <dd>
231 <p>It works by specifying perl snippets (most useful is a single <code>s///</code>
232 operator) that modify <code>$_</code> as resources:</p>
233 </dd>
234 <dd>
235 <pre>
236 URxvt.selection-autotransform.0: transform
237 URxvt.selection-autotransform.1: transform
238 ...</pre>
239 </dd>
240 <dd>
241 <p>For example, the following will transform selections of the form
242 <code>filename:number</code>, often seen in compiler messages, into <code>vi +$filename
243 $word</code>:</p>
244 </dd>
245 <dd>
246 <pre>
247 URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/</pre>
248 </dd>
249 <dd>
250 <p>And this example matches the same,but replaces it with vi-commands you can
251 paste directly into your (vi :) editor:</p>
252 </dd>
253 <dd>
254 <pre>
255 URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/</pre>
256 </dd>
257 <dd>
258 <p>Of course, this can be modified to suit your needs and your editor :)</p>
259 </dd>
260 <dd>
261 <p>To expand the example above to typical perl error messages (``XXX at
262 FILENAME line YYY.''), you need a slightly more elaborate solution:</p>
263 </dd>
264 <dd>
265 <pre>
266 URxvt.selection.pattern-0: ( at .*? line \\d+[,.])
267 URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/</pre>
268 </dd>
269 <dd>
270 <p>The first line tells the selection code to treat the unchanging part of
271 every error message as a selection pattern, and the second line transforms
272 the message into vi commands to load the file.</p>
273 </dd>
274 <p></p>
275 <dt><strong><a name="item_tabbed">tabbed</a></strong><br />
276 </dt>
277 <dd>
278 This transforms the terminal into a tabbar with additional terminals, that
279 is, it implements what is commonly refered to as ``tabbed terminal''. The topmost line
280 displays a ``[NEW]'' button, which, when clicked, will add a new tab, followed by one
281 button per tab.
282 </dd>
283 <dd>
284 <p>Clicking a button will activate that tab. Pressing <strong>Shift-Left</strong> and
285 <strong>Shift-Right</strong> will switch to the tab left or right of the current one,
286 while <strong>Shift-Down</strong> creates a new tab.</p>
287 </dd>
288 <p></p>
289 <dt><strong><a name="item_mark_2durls">mark-urls</a></strong><br />
290 </dt>
291 <dd>
292 Uses per-line display filtering (<code>on_line_update</code>) to underline urls and
293 make them clickable. When middle-clicked, the program specified in the
294 resource <code>urlLauncher</code> (default <code>x-www-browser</code>) will be started with
295 the URL as first argument.
296 </dd>
297 <p></p>
298 <dt><strong><a name="item_automove_2dbackground">automove-background</a></strong><br />
299 </dt>
300 <dd>
301 This is basically a one-line extension that dynamically changes the background pixmap offset
302 to the window position, in effect creating the same effect as pseudo transparency with
303 a custom pixmap. No scaling is supported in this mode. Exmaple:
304 </dd>
305 <dd>
306 <pre>
307 rxvt -pixmap background.xpm -pe automove-background</pre>
308 </dd>
309 <p></p>
310 <dt><strong><a name="item_block_2dgraphics_2dto_2dascii">block-graphics-to-ascii</a></strong><br />
311 </dt>
312 <dd>
313 A not very useful example of filtering all text output to the terminal,
314 by replacing all line-drawing characters (U+2500 .. U+259F) by a
315 similar-looking ascii character.
316 </dd>
317 <p></p>
318 <dt><strong><a name="item_digital_2dclock">digital-clock</a></strong><br />
319 </dt>
320 <dd>
321 Displays a digital clock using the built-in overlay.
322 </dd>
323 <p></p>
324 <dt><strong><a name="item_example_2drefresh_2dhooks">example-refresh-hooks</a></strong><br />
325 </dt>
326 <dd>
327 Displays a very simple digital clock in the upper right corner of the
328 window. Illustrates overwriting the refresh callbacks to create your own
329 overlays or changes.
330 </dd>
331 <p></p>
332 <dt><strong><a name="item_selection_2dpastebin">selection-pastebin</a></strong><br />
333 </dt>
334 <dd>
335 This is a little rarely useful extension that Uploads the selection as
336 textfile to a remote site (or does other things). (The implementation is
337 not currently secure for use in a multiuser environment as it writes to
338 <em>/tmp</em> directly.).
339 </dd>
340 <dd>
341 <p>It listens to the <code>selection-pastebin:remote-pastebin</code> keyboard command,
342 i.e.</p>
343 </dd>
344 <dd>
345 <pre>
346 URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin</pre>
347 </dd>
348 <dd>
349 <p>Pressing this combination runs a command with <code>%</code> replaced by the name of
350 the textfile. This command can be set via a resource:</p>
351 </dd>
352 <dd>
353 <pre>
354 URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/.</pre>
355 </dd>
356 <dd>
357 <p>And the default is likely not useful to anybody but the few people around
358 here :)</p>
359 </dd>
360 <dd>
361 <p>The name of the textfile is the hex encoded md5 sum of the selection, so
362 the same content should lead to the same filename.</p>
363 </dd>
364 <dd>
365 <p>After a successful upload the selection will be replaced by the text given
366 in the <code>selection-pastebin-url</code> resource (again, the % is the placeholder
367 for the filename):</p>
368 </dd>
369 <dd>
370 <pre>
371 URxvt.selection-pastebin.url: <a href="http://www.ta-sa.org/files/txt/%">http://www.ta-sa.org/files/txt/%</a></pre>
372 </dd>
373 <p></p></dl>
374 <p>
375 </p>
376 <hr />
377 <h1><a name="api_documentation">API DOCUMENTATION</a></h1>
378 <p>
379 </p>
380 <h2><a name="general_api_considerations">General API Considerations</a></h2>
381 <p>All objects (such as terminals, time watchers etc.) are typical
382 reference-to-hash objects. The hash can be used to store anything you
383 like. All members starting with an underscore (such as <code>_ptr</code> or
384 <code>_hook</code>) are reserved for internal uses and <strong>MUST NOT</strong> be accessed or
385 modified).</p>
386 <p>When objects are destroyed on the C++ side, the perl object hashes are
387 emptied, so its best to store related objects such as time watchers and
388 the like inside the terminal object so they get destroyed as soon as the
389 terminal is destroyed.</p>
390 <p>Argument names also often indicate the type of a parameter. Here are some
391 hints on what they mean:</p>
392 <dl>
393 <dt><strong><a name="item__24text">$text</a></strong><br />
394 </dt>
395 <dd>
396 Rxvt-unicodes special way of encoding text, where one ``unicode'' character
397 always represents one screen cell. See <a href="#item_row_t">ROW_t</a> for a discussion of this format.
398 </dd>
399 <p></p>
400 <dt><strong><a name="item__24string">$string</a></strong><br />
401 </dt>
402 <dd>
403 A perl text string, with an emphasis on <em>text</em>. It can store all unicode
404 characters and is to be distinguished with text encoded in a specific
405 encoding (often locale-specific) and binary data.
406 </dd>
407 <p></p>
408 <dt><strong><a name="item__24octets">$octets</a></strong><br />
409 </dt>
410 <dd>
411 Either binary data or - more common - a text string encoded in a
412 locale-specific way.
413 </dd>
414 <p></p></dl>
415 <p>
416 </p>
417 <h2><a name="extension_objects">Extension Objects</a></h2>
418 <p>Very perl extension is a perl class. A separate perl object is created
419 for each terminal and each extension and passed as the first parameter to
420 hooks. So extensions can use their <code>$self</code> object without having to think
421 about other extensions, with the exception of methods and members that
422 begin with an underscore character <code>_</code>: these are reserved for internal
423 use.</p>
424 <p>Although it isn't a <code>urxvt::term</code> object, you can call all methods of the
425 <code>urxvt::term</code> class on this object.</p>
426 <p>It has the following methods and data members:</p>
427 <dl>
428 <dt><strong><a name="item__24urxvt_term__3d__24self_2d_3e_7bterm_7d">$urxvt_term = $self-&gt;{term}</a></strong><br />
429 </dt>
430 <dd>
431 Returns the <code>urxvt::term</code> object associated with this instance of the
432 extension. This member <em>must not</em> be changed in any way.
433 </dd>
434 <p></p>
435 <dt><strong><a name="item_enable">$self-&gt;enable ($hook_name =&gt; $cb, [$hook_name =&gt; $cb..])</a></strong><br />
436 </dt>
437 <dd>
438 Dynamically enable the given hooks (named without the <code>on_</code> prefix) for
439 this extension, replacing any previous hook. This is useful when you want
440 to overwrite time-critical hooks only temporarily.
441 </dd>
442 <p></p>
443 <dt><strong><a name="item_disable">$self-&gt;disable ($hook_name[, $hook_name..])</a></strong><br />
444 </dt>
445 <dd>
446 Dynamically disable the given hooks.
447 </dd>
448 <p></p></dl>
449 <p>
450 </p>
451 <h2><a name="hooks">Hooks</a></h2>
452 <p>The following subroutines can be declared in extension files, and will be
453 called whenever the relevant event happens.</p>
454 <p>The first argument passed to them is an extension oject as described in
455 the in the <code>Extension Objects</code> section.</p>
456 <p><strong>All</strong> of these hooks must return a boolean value. If any of the called
457 hooks returns true, then the event counts as being <em>consumed</em>, and the
458 relevant action might not be carried out by the C++ code.</p>
459 <p><em>When in doubt, return a false value (preferably <code>()</code>). </em>&gt;</p>
460 <dl>
461 <dt><strong><a name="item_on_init__24term">on_init $term</a></strong><br />
462 </dt>
463 <dd>
464 Called after a new terminal object has been initialized, but before
465 windows are created or the command gets run. Most methods are unsafe to
466 call or deliver senseless data, as terminal size and other characteristics
467 have not yet been determined. You can safely query and change resources
468 and options, though. For many purposes the <code>on_start</code> hook is a better
469 place.
470 </dd>
471 <p></p>
472 <dt><strong><a name="item_on_start__24term">on_start $term</a></strong><br />
473 </dt>
474 <dd>
475 Called at the very end of initialisation of a new terminal, just before
476 trying to map (display) the toplevel and returning to the mainloop.
477 </dd>
478 <p></p>
479 <dt><strong><a name="item_on_destroy__24term">on_destroy $term</a></strong><br />
480 </dt>
481 <dd>
482 Called whenever something tries to destroy terminal, before doing anything
483 yet. If this hook returns true, then destruction is skipped, but this is
484 rarely a good idea.
485 </dd>
486 <p></p>
487 <dt><strong><a name="item_on_reset__24term">on_reset $term</a></strong><br />
488 </dt>
489 <dd>
490 Called after the screen is ``reset'' for any reason, such as resizing or
491 control sequences. Here is where you can react on changes to size-related
492 variables.
493 </dd>
494 <p></p>
495 <dt><strong><a name="item_on_child_start__24term_2c__24pid">on_child_start $term, $pid</a></strong><br />
496 </dt>
497 <dd>
498 Called just after the child process has been <code>fork</code>ed.
499 </dd>
500 <p></p>
501 <dt><strong><a name="item_on_child_exit__24term_2c__24status">on_child_exit $term, $status</a></strong><br />
502 </dt>
503 <dd>
504 Called just after the child process has exited. <code>$status</code> is the status
505 from <code>waitpid</code>.
506 </dd>
507 <p></p>
508 <dt><strong><a name="item_on_sel_make__24term_2c__24eventtime">on_sel_make $term, $eventtime</a></strong><br />
509 </dt>
510 <dd>
511 Called whenever a selection has been made by the user, but before the
512 selection text is copied, so changes to the beginning, end or type of the
513 selection will be honored.
514 </dd>
515 <dd>
516 <p>Returning a true value aborts selection making by urxvt, in which case you
517 have to make a selection yourself by calling <a href="#item_selection_grab"><code>$term-&gt;selection_grab</code></a>.</p>
518 </dd>
519 <p></p>
520 <dt><strong><a name="item_on_sel_grab__24term_2c__24eventtime">on_sel_grab $term, $eventtime</a></strong><br />
521 </dt>
522 <dd>
523 Called whenever a selection has been copied, but before the selection is
524 requested from the server. The selection text can be queried and changed
525 by calling <a href="#item_selection"><code>$term-&gt;selection</code></a>.
526 </dd>
527 <dd>
528 <p>Returning a true value aborts selection grabbing. It will still be hilighted.</p>
529 </dd>
530 <p></p>
531 <dt><strong><a name="item_on_sel_extend__24term">on_sel_extend $term</a></strong><br />
532 </dt>
533 <dd>
534 Called whenever the user tries to extend the selection (e.g. with a double
535 click) and is either supposed to return false (normal operation), or
536 should extend the selection itelf and return true to suppress the built-in
537 processing. This can happen multiple times, as long as the callback
538 returns true, it will be called on every further click by the user and is
539 supposed to enlarge the selection more and more, if possible.
540 </dd>
541 <dd>
542 <p>See the <em>selection</em> example extension.</p>
543 </dd>
544 <p></p>
545 <dt><strong><a name="item_on_view_change__24term_2c__24offset">on_view_change $term, $offset</a></strong><br />
546 </dt>
547 <dd>
548 Called whenever the view offset changes, i..e the user or program
549 scrolls. Offset <code>0</code> means display the normal terminal, positive values
550 show this many lines of scrollback.
551 </dd>
552 <p></p>
553 <dt><strong><a name="item_on_scroll_back__24term_2c__24lines_2c__24saved">on_scroll_back $term, $lines, $saved</a></strong><br />
554 </dt>
555 <dd>
556 Called whenever lines scroll out of the terminal area into the scrollback
557 buffer. <code>$lines</code> is the number of lines scrolled out and may be larger
558 than the scroll back buffer or the terminal.
559 </dd>
560 <dd>
561 <p>It is called before lines are scrolled out (so rows 0 .. min ($lines - 1,
562 $nrow - 1) represent the lines to be scrolled out). <code>$saved</code> is the total
563 number of lines that will be in the scrollback buffer.</p>
564 </dd>
565 <p></p>
566 <dt><strong><a name="item_on_osc_seq__24term_2c__24string">on_osc_seq $term, $string</a></strong><br />
567 </dt>
568 <dd>
569 Called whenever the <strong>ESC ] 777 ; string ST</strong> command sequence (OSC =
570 operating system command) is processed. Cursor position and other state
571 information is up-to-date when this happens. For interoperability, the
572 string should start with the extension name and a colon, to distinguish
573 it from commands for other extensions, and this might be enforced in the
574 future.
575 </dd>
576 <dd>
577 <p>Be careful not ever to trust (in a security sense) the data you receive,
578 as its source can not easily be controleld (e-mail content, messages from
579 other users on the same system etc.).</p>
580 </dd>
581 <p></p>
582 <dt><strong><a name="item_on_add_lines__24term_2c__24string">on_add_lines $term, $string</a></strong><br />
583 </dt>
584 <dd>
585 Called whenever text is about to be output, with the text as argument. You
586 can filter/change and output the text yourself by returning a true value
587 and calling <a href="#item_scr_add_lines"><code>$term-&gt;scr_add_lines</code></a> yourself. Please note that this
588 might be very slow, however, as your hook is called for <strong>all</strong> text being
589 output.
590 </dd>
591 <p></p>
592 <dt><strong><a name="item_on_tt_write__24term_2c__24octets">on_tt_write $term, $octets</a></strong><br />
593 </dt>
594 <dd>
595 Called whenever some data is written to the tty/pty and can be used to
596 suppress or filter tty input.
597 </dd>
598 <p></p>
599 <dt><strong><a name="item_on_line_update__24term_2c__24row">on_line_update $term, $row</a></strong><br />
600 </dt>
601 <dd>
602 Called whenever a line was updated or changed. Can be used to filter
603 screen output (e.g. underline urls or other useless stuff). Only lines
604 that are being shown will be filtered, and, due to performance reasons,
605 not always immediately.
606 </dd>
607 <dd>
608 <p>The row number is always the topmost row of the line if the line spans
609 multiple rows.</p>
610 </dd>
611 <dd>
612 <p>Please note that, if you change the line, then the hook might get called
613 later with the already-modified line (e.g. if unrelated parts change), so
614 you cannot just toggle rendition bits, but only set them.</p>
615 </dd>
616 <p></p>
617 <dt><strong><a name="item_on_refresh_begin__24term">on_refresh_begin $term</a></strong><br />
618 </dt>
619 <dd>
620 Called just before the screen gets redrawn. Can be used for overlay
621 or similar effects by modify terminal contents in refresh_begin, and
622 restoring them in refresh_end. The built-in overlay and selection display
623 code is run after this hook, and takes precedence.
624 </dd>
625 <p></p>
626 <dt><strong><a name="item_on_refresh_end__24term">on_refresh_end $term</a></strong><br />
627 </dt>
628 <dd>
629 Called just after the screen gets redrawn. See <code>on_refresh_begin</code>.
630 </dd>
631 <p></p>
632 <dt><strong><a name="item_on_keyboard_command__24term_2c__24string">on_keyboard_command $term, $string</a></strong><br />
633 </dt>
634 <dd>
635 Called whenever the user presses a key combination that has a
636 <code>perl:string</code> action bound to it (see description of the <strong>keysym</strong>
637 resource in the <code>rxvt(1)</code> manpage).
638 </dd>
639 <p></p>
640 <dt><strong><a name="item_on_x_event__24term_2c__24event">on_x_event $term, $event</a></strong><br />
641 </dt>
642 <dd>
643 Called on every X event received on the vt window (and possibly other
644 windows). Should only be used as a last resort. Most event structure
645 members are not passed.
646 </dd>
647 <p></p>
648 <dt><strong><a name="item_on_focus_in__24term">on_focus_in $term</a></strong><br />
649 </dt>
650 <dd>
651 Called whenever the window gets the keyboard focus, before rxvt-unicode
652 does focus in processing.
653 </dd>
654 <p></p>
655 <dt><strong><a name="item_on_focus_out__24term">on_focus_out $term</a></strong><br />
656 </dt>
657 <dd>
658 Called wheneever the window loses keyboard focus, before rxvt-unicode does
659 focus out processing.
660 </dd>
661 <p></p>
662 <dt><strong><a name="item_on_configure_notify__24term_2c__24event">on_configure_notify $term, $event</a></strong><br />
663 </dt>
664 <dt><strong><a name="item_on_property_notify__24term_2c__24event">on_property_notify $term, $event</a></strong><br />
665 </dt>
666 <dt><strong><a name="item_on_key_press__24term_2c__24event_2c__24keysym_2c__">on_key_press $term, $event, $keysym, $octets</a></strong><br />
667 </dt>
668 <dt><strong><a name="item_on_key_release__24term_2c__24event_2c__24keysym">on_key_release $term, $event, $keysym</a></strong><br />
669 </dt>
670 <dt><strong><a name="item_on_button_press__24term_2c__24event">on_button_press $term, $event</a></strong><br />
671 </dt>
672 <dt><strong><a name="item_on_button_release__24term_2c__24event">on_button_release $term, $event</a></strong><br />
673 </dt>
674 <dt><strong><a name="item_on_motion_notify__24term_2c__24event">on_motion_notify $term, $event</a></strong><br />
675 </dt>
676 <dt><strong><a name="item_on_map_notify__24term_2c__24event">on_map_notify $term, $event</a></strong><br />
677 </dt>
678 <dt><strong><a name="item_on_unmap_notify__24term_2c__24event">on_unmap_notify $term, $event</a></strong><br />
679 </dt>
680 <dd>
681 Called whenever the corresponding X event is received for the terminal If
682 the hook returns true, then the even will be ignored by rxvt-unicode.
683 </dd>
684 <dd>
685 <p>The event is a hash with most values as named by Xlib (see the XEvent
686 manpage), with the additional members <code>row</code> and <code>col</code>, which are the
687 (real, not screen-based) row and column under the mouse cursor.</p>
688 </dd>
689 <dd>
690 <p><code>on_key_press</code> additionally receives the string rxvt-unicode would
691 output, if any, in locale-specific encoding.</p>
692 </dd>
693 <dd>
694 <p>subwindow.</p>
695 </dd>
696 <p></p>
697 <dt><strong><a name="item_on_client_message__24term_2c__24event">on_client_message $term, $event</a></strong><br />
698 </dt>
699 <dt><strong><a name="item_on_wm_protocols__24term_2c__24event">on_wm_protocols $term, $event</a></strong><br />
700 </dt>
701 <dt><strong><a name="item_on_wm_delete_window__24term_2c__24event">on_wm_delete_window $term, $event</a></strong><br />
702 </dt>
703 <dd>
704 Called when various types of ClientMessage events are received (all with
705 format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
706 </dd>
707 <p></p></dl>
708 <p>
709 </p>
710 <h2><a name="variables_in_the_urxvt_package">Variables in the <code>urxvt</code> Package</a></h2>
711 <dl>
712 <dt><strong><a name="item__24urxvt_3a_3alibdir">$urxvt::LIBDIR</a></strong><br />
713 </dt>
714 <dd>
715 The rxvt-unicode library directory, where, among other things, the perl
716 modules and scripts are stored.
717 </dd>
718 <p></p>
719 <dt><strong><a name="item__24urxvt_3a_3aresclass_2c__24urxvt_3a_3aresclass">$urxvt::RESCLASS, $urxvt::RESCLASS</a></strong><br />
720 </dt>
721 <dd>
722 The resource class and name rxvt-unicode uses to look up X resources.
723 </dd>
724 <p></p>
725 <dt><strong><a name="item__24urxvt_3a_3arxvtname">$urxvt::RXVTNAME</a></strong><br />
726 </dt>
727 <dd>
728 The basename of the installed binaries, usually <code>urxvt</code>.
729 </dd>
730 <p></p>
731 <dt><strong><a name="item__24urxvt_3a_3aterm">$urxvt::TERM</a></strong><br />
732 </dt>
733 <dd>
734 The current terminal. This variable stores the current <code>urxvt::term</code>
735 object, whenever a callback/hook is executing.
736 </dd>
737 <p></p>
738 <dt><strong><a name="item__40urxvt_3a_3aterm_init">@urxvt::TERM_INIT</a></strong><br />
739 </dt>
740 <dd>
741 All coderefs in this array will be called as methods of the next newly
742 created <code>urxvt::term</code> object (during the <code>on_init</code> phase). The array
743 gets cleared before the codereferences that were in it are being executed,
744 so coderefs can push themselves onto it again if they so desire.
745 </dd>
746 <dd>
747 <p>This complements to the perl-eval commandline option, but gets executed
748 first.</p>
749 </dd>
750 <p></p>
751 <dt><strong><a name="item__40urxvt_3a_3aterm_ext">@urxvt::TERM_EXT</a></strong><br />
752 </dt>
753 <dd>
754 Works similar to <code>@TERM_INIT</code>, but contains perl package/class names, which
755 get registered as normal extensions after calling the hooks in <code>@TERM_INIT</code>
756 but before other extensions. Gets cleared just like <code>@TERM_INIT</code>.
757 </dd>
758 <p></p></dl>
759 <p>
760 </p>
761 <h2><a name="functions_in_the_urxvt_package">Functions in the <code>urxvt</code> Package</a></h2>
762 <dl>
763 <dt><strong><a name="item_urxvt_3a_3afatal__24errormessage">urxvt::fatal $errormessage</a></strong><br />
764 </dt>
765 <dd>
766 Fatally aborts execution with the given error message. Avoid at all
767 costs! The only time this is acceptable is when the terminal process
768 starts up.
769 </dd>
770 <p></p>
771 <dt><strong><a name="item_urxvt_3a_3awarn__24string">urxvt::warn $string</a></strong><br />
772 </dt>
773 <dd>
774 Calls <code>rxvt_warn</code> with the given string which should not include a
775 newline. The module also overwrites the <code>warn</code> builtin with a function
776 that calls this function.
777 </dd>
778 <dd>
779 <p>Using this function has the advantage that its output ends up in the
780 correct place, e.g. on stderr of the connecting urxvtc client.</p>
781 </dd>
782 <dd>
783 <p>Messages have a size limit of 1023 bytes currently.</p>
784 </dd>
785 <p></p>
786 <dt><strong><a name="item__24time__3d_urxvt_3a_3anow">$time = urxvt::NOW</a></strong><br />
787 </dt>
788 <dd>
789 Returns the ``current time'' (as per the event loop).
790 </dd>
791 <p></p>
792 <dt><strong><a name="item_urxvt_3a_3acurrenttime">urxvt::CurrentTime</a></strong><br />
793 </dt>
794 <dt><strong><a name="item_urxvt_3a_3ashiftmask_2c_lockmask_2c_controlmask_2c">urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
795 Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask,
796 Button4Mask, Button5Mask, AnyModifier</a></strong><br />
797 </dt>
798 <dt><strong><a name="item_urxvt_3a_3anoeventmask_2c_keypressmask_2c_keyrelea">urxvt::NoEventMask, KeyPressMask, KeyReleaseMask,
799 ButtonPressMask, ButtonReleaseMask, EnterWindowMask, LeaveWindowMask,
800 PointerMotionMask, PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
801 Button3MotionMask, Button4MotionMask, Button5MotionMask, ButtonMotionMask,
802 KeymapStateMask, ExposureMask, VisibilityChangeMask, StructureNotifyMask,
803 ResizeRedirectMask, SubstructureNotifyMask, SubstructureRedirectMask,
804 FocusChangeMask, PropertyChangeMask, ColormapChangeMask, OwnerGrabButtonMask</a></strong><br />
805 </dt>
806 <dt><strong><a name="item_urxvt_3a_3akeypress_2c_keyrelease_2c_buttonpress_2">urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
807 EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
808 GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify,
809 UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify,
810 ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify,
811 CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest,
812 SelectionNotify, ColormapNotify, ClientMessage, MappingNotify</a></strong><br />
813 </dt>
814 <dd>
815 Various constants for use in X calls and event processing.
816 </dd>
817 <p></p></dl>
818 <p>
819 </p>
820 <h2><a name="rendition">RENDITION</a></h2>
821 <p>Rendition bitsets contain information about colour, font, font styles and
822 similar information for each screen cell.</p>
823 <p>The following ``macros'' deal with changes in rendition sets. You should
824 never just create a bitset, you should always modify an existing one,
825 as they contain important information required for correct operation of
826 rxvt-unicode.</p>
827 <dl>
828 <dt><strong><a name="item__24rend__3d_urxvt_3a_3adefault_rstyle">$rend = urxvt::DEFAULT_RSTYLE</a></strong><br />
829 </dt>
830 <dd>
831 Returns the default rendition, as used when the terminal is starting up or
832 being reset. Useful as a base to start when creating renditions.
833 </dd>
834 <p></p>
835 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aoverlay_rstyle">$rend = urxvt::OVERLAY_RSTYLE</a></strong><br />
836 </dt>
837 <dd>
838 Return the rendition mask used for overlays by default.
839 </dd>
840 <p></p>
841 <dt><strong><a name="item__24rendbit__3d_urxvt_3a_3ars_bold_2c_rs_italic_2c_">$rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline</a></strong><br />
842 </dt>
843 <dd>
844 Return the bit that enabled bold, italic, blink, reverse-video and
845 underline, respectively. To enable such a style, just logically OR it into
846 the bitset.
847 </dd>
848 <p></p>
849 <dt><strong><a name="item__24foreground__3d_urxvt_3a_3aget_basefg__24rend">$foreground = urxvt::GET_BASEFG $rend</a></strong><br />
850 </dt>
851 <dt><strong><a name="item__24background__3d_urxvt_3a_3aget_basebg__24rend">$background = urxvt::GET_BASEBG $rend</a></strong><br />
852 </dt>
853 <dd>
854 Return the foreground/background colour index, respectively.
855 </dd>
856 <p></p>
857 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_fgcolor__24rend_2c__24n">$rend = urxvt::SET_FGCOLOR $rend, $new_colour</a></strong><br />
858 </dt>
859 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_bgcolor__24rend_2c__24n">$rend = urxvt::SET_BGCOLOR $rend, $new_colour</a></strong><br />
860 </dt>
861 <dd>
862 Replace the foreground/background colour in the rendition mask with the
863 specified one.
864 </dd>
865 <p></p>
866 <dt><strong><a name="item__24value__3d_urxvt_3a_3aget_custom__24rend">$value = urxvt::GET_CUSTOM $rend</a></strong><br />
867 </dt>
868 <dd>
869 Return the ``custom'' value: Every rendition has 5 bits for use by
870 extensions. They can be set and changed as you like and are initially
871 zero.
872 </dd>
873 <p></p>
874 <dt><strong><a name="item__24rend__3d_urxvt_3a_3aset_custom__24rend_2c__24ne">$rend = urxvt::SET_CUSTOM $rend, $new_value</a></strong><br />
875 </dt>
876 <dd>
877 Change the custom value.
878 </dd>
879 <p></p></dl>
880 <p>
881 </p>
882 <h2><a name="the_urxvt__anyevent_class">The <code>urxvt::anyevent</code> Class</a></h2>
883 <p>The sole purpose of this class is to deliver an interface to the
884 <code>AnyEvent</code> module - any module using it will work inside urxvt without
885 further programming. The only exception is that you cannot wait on
886 condition variables, but non-blocking condvar use is ok. What this means
887 is that you cannot use blocking APIs, but the non-blocking variant should
888 work.</p>
889 <p>
890 </p>
891 <h2><a name="the_urxvt__term_class">The <code>urxvt::term</code> Class</a></h2>
892 <dl>
893 <dt><strong><a name="item__24term__3d_new_urxvt_3a_3aterm__24envhashref_2c__">$term = new urxvt::term $envhashref, $rxvtname, [arg...]</a></strong><br />
894 </dt>
895 <dd>
896 Creates a new terminal, very similar as if you had started it with system
897 <code>$rxvtname, arg...</code>. <code>$envhashref</code> must be a reference to a <code>%ENV</code>-like
898 hash which defines the environment of the new terminal.
899 </dd>
900 <dd>
901 <p>Croaks (and probably outputs an error message) if the new instance
902 couldn't be created. Returns <code>undef</code> if the new instance didn't
903 initialise perl, and the terminal object otherwise. The <code>init</code> and
904 <a href="#item_start"><code>start</code></a> hooks will be called during this call.</p>
905 </dd>
906 <p></p>
907 <dt><strong><a name="item_destroy">$term-&gt;destroy</a></strong><br />
908 </dt>
909 <dd>
910 Destroy the terminal object (close the window, free resources
911 etc.). Please note that rxvt will not exit as long as any event
912 watchers (timers, io watchers) are still active.
913 </dd>
914 <p></p>
915 <dt><strong><a name="item_exec_async">$term-&gt;exec_async ($cmd[, @args])</a></strong><br />
916 </dt>
917 <dd>
918 Works like the combination of the <code>fork</code>/<code>exec</code> builtins, which executes
919 (``starts'') programs in the background. This function takes care of setting
920 the user environment before exec'ing the command (e.g. <code>PATH</code>) and should
921 be preferred over explicit calls to <code>exec</code> or <code>system</code>.
922 </dd>
923 <dd>
924 <p>Returns the pid of the subprocess or <code>undef</code> on error.</p>
925 </dd>
926 <p></p>
927 <dt><strong><a name="item_option">$isset = $term-&gt;option ($optval[, $set])</a></strong><br />
928 </dt>
929 <dd>
930 Returns true if the option specified by <code>$optval</code> is enabled, and
931 optionally change it. All option values are stored by name in the hash
932 <code>%urxvt::OPTION</code>. Options not enabled in this binary are not in the hash.
933 </dd>
934 <dd>
935 <p>Here is a a likely non-exhaustive list of option names, please see the
936 source file <em>/src/optinc.h</em> to see the actual list:</p>
937 </dd>
938 <dd>
939 <pre>
940 borderLess console cursorBlink cursorUnderline hold iconic insecure
941 intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
942 override-redirect pastableTabs pointerBlank reverseVideo scrollBar
943 scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput
944 scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs
945 transparent tripleclickwords utmpInhibit visualBell</pre>
946 </dd>
947 <p></p>
948 <dt><strong><a name="item_resource">$value = $term-&gt;resource ($name[, $newval])</a></strong><br />
949 </dt>
950 <dd>
951 Returns the current resource value associated with a given name and
952 optionally sets a new value. Setting values is most useful in the <code>init</code>
953 hook. Unset resources are returned and accepted as <code>undef</code>.
954 </dd>
955 <dd>
956 <p>The new value must be properly encoded to a suitable character encoding
957 before passing it to this method. Similarly, the returned value may need
958 to be converted from the used encoding to text.</p>
959 </dd>
960 <dd>
961 <p>Resource names are as defined in <em>src/rsinc.h</em>. Colours can be specified
962 as resource names of the form <code>color+&lt;index&gt;</code>, e.g. <code>color+5</code>. (will
963 likely change).</p>
964 </dd>
965 <dd>
966 <p>Please note that resource strings will currently only be freed when the
967 terminal is destroyed, so changing options frequently will eat memory.</p>
968 </dd>
969 <dd>
970 <p>Here is a a likely non-exhaustive list of resource names, not all of which
971 are supported in every build, please see the source file <em>/src/rsinc.h</em>
972 to see the actual list:</p>
973 </dd>
974 <dd>
975 <pre>
976 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
977 borderLess color cursorBlink cursorUnderline cutchars delete_key
978 display_name embed ext_bwidth fade font geometry hold iconName
979 imFont imLocale inputMethod insecure int_bwidth intensityStyles
980 italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier
981 mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
982 perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
983 preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
984 scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
985 scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
986 secondaryScreen secondaryScroll selectstyle shade term_name title
987 transient_for transparent transparent_all tripleclickwords utmpInhibit
988 visualBell</pre>
989 </dd>
990 <p></p>
991 <dt><strong><a name="item_x_resource">$value = $term-&gt;x_resource ($pattern)</a></strong><br />
992 </dt>
993 <dd>
994 Returns the X-Resource for the given pattern, excluding the program or
995 class name, i.e. <a href="#item_x_resource"><code>$term-&gt;x_resource (&quot;boldFont&quot;)</code></a> should return the
996 same value as used by this instance of rxvt-unicode. Returns <code>undef</code> if no
997 resource with that pattern exists.
998 </dd>
999 <dd>
1000 <p>This method should only be called during the <code>on_start</code> hook, as there is
1001 only one resource database per display, and later invocations might return
1002 the wrong resources.</p>
1003 </dd>
1004 <p></p>
1005 <dt><strong><a name="item_parse_keysym">$success = $term-&gt;parse_keysym ($keysym_spec, $command_string)</a></strong><br />
1006 </dt>
1007 <dd>
1008 Adds a keymap translation exactly as specified via a resource. See the
1009 <code>keysym</code> resource in the <code>rxvt(1)</code> manpage.
1010 </dd>
1011 <p></p>
1012 <dt><strong><a name="item_rstyle">$rend = $term-&gt;rstyle ([$new_rstyle])</a></strong><br />
1013 </dt>
1014 <dd>
1015 Return and optionally change the current rendition. Text that is output by
1016 the terminal application will use this style.
1017 </dd>
1018 <p></p>
1019 <dt><strong><a name="item_screen_cur">($row, $col) = $term-&gt;screen_cur ([$row, $col])</a></strong><br />
1020 </dt>
1021 <dd>
1022 Return the current coordinates of the text cursor position and optionally
1023 set it (which is usually bad as applications don't expect that).
1024 </dd>
1025 <p></p>
1026 <dt><strong><a name="item_selection_mark">($row, $col) = $term-&gt;selection_mark ([$row, $col])</a></strong><br />
1027 </dt>
1028 <dt><strong><a name="item_selection_beg">($row, $col) = $term-&gt;selection_beg ([$row, $col])</a></strong><br />
1029 </dt>
1030 <dt><strong><a name="item_selection_end">($row, $col) = $term-&gt;selection_end ([$row, $col])</a></strong><br />
1031 </dt>
1032 <dd>
1033 Return the current values of the selection mark, begin or end positions,
1034 and optionally set them to new values.
1035 </dd>
1036 <p></p>
1037 <dt><strong><a name="item_selection_make">$term-&gt;selection_make ($eventtime[, $rectangular])</a></strong><br />
1038 </dt>
1039 <dd>
1040 Tries to make a selection as set by <a href="#item_selection_beg"><code>selection_beg</code></a> and
1041 <a href="#item_selection_end"><code>selection_end</code></a>. If <code>$rectangular</code> is true (default: false), a
1042 rectangular selection will be made. This is the prefered function to make
1043 a selection.
1044 </dd>
1045 <p></p>
1046 <dt><strong><a name="item_selection_grab">$success = $term-&gt;selection_grab ($eventtime)</a></strong><br />
1047 </dt>
1048 <dd>
1049 Try to request the primary selection text from the server (for example, as
1050 set by the next method). No visual feedback will be given. This function
1051 is mostly useful from within <code>on_sel_grab</code> hooks.
1052 </dd>
1053 <p></p>
1054 <dt><strong>$oldtext = $term-&gt;selection ([$newtext])</strong><br />
1055 </dt>
1056 <dd>
1057 Return the current selection text and optionally replace it by <code>$newtext</code>.
1058 </dd>
1059 <p></p>
1060 <dt><strong><a name="item_overlay_simple">$term-&gt;overlay_simple ($x, $y, $text)</a></strong><br />
1061 </dt>
1062 <dd>
1063 Create a simple multi-line overlay box. See the next method for details.
1064 </dd>
1065 <p></p>
1066 <dt><strong><a name="item_overlay">$term-&gt;overlay ($x, $y, $width, $height[, $rstyle[, $border]])</a></strong><br />
1067 </dt>
1068 <dd>
1069 Create a new (empty) overlay at the given position with the given
1070 width/height. <code>$rstyle</code> defines the initial rendition style
1071 (default: <code>OVERLAY_RSTYLE</code>).
1072 </dd>
1073 <dd>
1074 <p>If <code>$border</code> is <code>2</code> (default), then a decorative border will be put
1075 around the box.</p>
1076 </dd>
1077 <dd>
1078 <p>If either <code>$x</code> or <code>$y</code> is negative, then this is counted from the
1079 right/bottom side, respectively.</p>
1080 </dd>
1081 <dd>
1082 <p>This method returns an urxvt::overlay object. The overlay will be visible
1083 as long as the perl object is referenced.</p>
1084 </dd>
1085 <dd>
1086 <p>The methods currently supported on <code>urxvt::overlay</code> objects are:</p>
1087 </dd>
1088 <dl>
1089 <dt><strong><a name="item_set">$overlay-&gt;set ($x, $y, $text, $rend)</a></strong><br />
1090 </dt>
1091 <dd>
1092 Similar to <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> and <a href="#item_row_r"><code>$term-&gt;ROW_r</code></a> in that it puts
1093 text in rxvt-unicode's special encoding and an array of rendition values
1094 at a specific position inside the overlay.
1095 </dd>
1096 <p></p>
1097 <dt><strong><a name="item_hide">$overlay-&gt;hide</a></strong><br />
1098 </dt>
1099 <dd>
1100 If visible, hide the overlay, but do not destroy it.
1101 </dd>
1102 <p></p>
1103 <dt><strong><a name="item_show">$overlay-&gt;show</a></strong><br />
1104 </dt>
1105 <dd>
1106 If hidden, display the overlay again.
1107 </dd>
1108 <p></p></dl>
1109 <dt><strong>$popup = $term-&gt;popup ($event)</strong><br />
1110 </dt>
1111 <dd>
1112 Creates a new <code>urxvt::popup</code> object that implements a popup menu. The
1113 <code>$event</code> <em>must</em> be the event causing the menu to pop up (a button event,
1114 currently).
1115 </dd>
1116 <p></p>
1117 <dt><strong><a name="item_strwidth">$cellwidth = $term-&gt;strwidth ($string)</a></strong><br />
1118 </dt>
1119 <dd>
1120 Returns the number of screen-cells this string would need. Correctly
1121 accounts for wide and combining characters.
1122 </dd>
1123 <p></p>
1124 <dt><strong><a name="item_locale_encode">$octets = $term-&gt;locale_encode ($string)</a></strong><br />
1125 </dt>
1126 <dd>
1127 Convert the given text string into the corresponding locale encoding.
1128 </dd>
1129 <p></p>
1130 <dt><strong><a name="item_locale_decode">$string = $term-&gt;locale_decode ($octets)</a></strong><br />
1131 </dt>
1132 <dd>
1133 Convert the given locale-encoded octets into a perl string.
1134 </dd>
1135 <p></p>
1136 <dt><strong><a name="item_scr_xor_span">$term-&gt;scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])</a></strong><br />
1137 </dt>
1138 <dd>
1139 XORs the rendition values in the given span with the provided value
1140 (default: <code>RS_RVid</code>), which <em>MUST NOT</em> contain font styles. Useful in
1141 refresh hooks to provide effects similar to the selection.
1142 </dd>
1143 <p></p>
1144 <dt><strong><a name="item_scr_xor_rect">$term-&gt;scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]])</a></strong><br />
1145 </dt>
1146 <dd>
1147 Similar to <a href="#item_scr_xor_span"><code>scr_xor_span</code></a>, but xors a rectangle instead. Trailing
1148 whitespace will additionally be xored with the <code>$rstyle2</code>, which defaults
1149 to <code>RS_RVid | RS_Uline</code>, which removes reverse video again and underlines
1150 it instead. Both styles <em>MUST NOT</em> contain font styles.
1151 </dd>
1152 <p></p>
1153 <dt><strong><a name="item_scr_bell">$term-&gt;scr_bell</a></strong><br />
1154 </dt>
1155 <dd>
1156 Ring the bell!
1157 </dd>
1158 <p></p>
1159 <dt><strong><a name="item_scr_add_lines">$term-&gt;scr_add_lines ($string)</a></strong><br />
1160 </dt>
1161 <dd>
1162 Write the given text string to the screen, as if output by the application
1163 running inside the terminal. It may not contain command sequences (escape
1164 codes), but is free to use line feeds, carriage returns and tabs. The
1165 string is a normal text string, not in locale-dependent encoding.
1166 </dd>
1167 <dd>
1168 <p>Normally its not a good idea to use this function, as programs might be
1169 confused by changes in cursor position or scrolling. Its useful inside a
1170 <code>on_add_lines</code> hook, though.</p>
1171 </dd>
1172 <p></p>
1173 <dt><strong><a name="item_scr_change_screen">$term-&gt;scr_change_screen ($screen)</a></strong><br />
1174 </dt>
1175 <dd>
1176 Switch to given screen - 0 primary, 1 secondary.
1177 </dd>
1178 <p></p>
1179 <dt><strong><a name="item_cmd_parse">$term-&gt;cmd_parse ($octets)</a></strong><br />
1180 </dt>
1181 <dd>
1182 Similar to <a href="#item_scr_add_lines"><code>scr_add_lines</code></a>, but the argument must be in the
1183 locale-specific encoding of the terminal and can contain command sequences
1184 (escape codes) that will be interpreted.
1185 </dd>
1186 <p></p>
1187 <dt><strong><a name="item_tt_write">$term-&gt;tt_write ($octets)</a></strong><br />
1188 </dt>
1189 <dd>
1190 Write the octets given in <code>$data</code> to the tty (i.e. as program input). To
1191 pass characters instead of octets, you should convert your strings first
1192 to the locale-specific encoding using <a href="#item_locale_encode"><code>$term-&gt;locale_encode</code></a>.
1193 </dd>
1194 <p></p>
1195 <dt><strong><a name="item_pty_ev_events">$old_events = $term-&gt;pty_ev_events ([$new_events])</a></strong><br />
1196 </dt>
1197 <dd>
1198 Replaces the event mask of the pty watcher by the given event mask. Can
1199 be used to suppress input and output handling to the pty/tty. See the
1200 description of <a href="#item_events"><code>urxvt::timer-&gt;events</code></a>. Make sure to always restore
1201 the previous value.
1202 </dd>
1203 <p></p>
1204 <dt><strong><a name="item_pty_fd">$fd = $term-&gt;pty_fd</a></strong><br />
1205 </dt>
1206 <dd>
1207 Returns the master file descriptor for the pty in use, or <code>-1</code> if no pty
1208 is used.
1209 </dd>
1210 <p></p>
1211 <dt><strong><a name="item_parent">$windowid = $term-&gt;parent</a></strong><br />
1212 </dt>
1213 <dd>
1214 Return the window id of the toplevel window.
1215 </dd>
1216 <p></p>
1217 <dt><strong><a name="item_vt">$windowid = $term-&gt;vt</a></strong><br />
1218 </dt>
1219 <dd>
1220 Return the window id of the terminal window.
1221 </dd>
1222 <p></p>
1223 <dt><strong><a name="item_vt_emask_add">$term-&gt;vt_emask_add ($x_event_mask)</a></strong><br />
1224 </dt>
1225 <dd>
1226 Adds the specified events to the vt event mask. Useful e.g. when you want
1227 to receive pointer events all the times:
1228 </dd>
1229 <dd>
1230 <pre>
1231 $term-&gt;vt_emask_add (urxvt::PointerMotionMask);</pre>
1232 </dd>
1233 <p></p>
1234 <dt><strong><a name="item_width">$window_width = $term-&gt;width</a></strong><br />
1235 </dt>
1236 <dt><strong><a name="item_height">$window_height = $term-&gt;height</a></strong><br />
1237 </dt>
1238 <dt><strong><a name="item_fwidth">$font_width = $term-&gt;fwidth</a></strong><br />
1239 </dt>
1240 <dt><strong><a name="item_fheight">$font_height = $term-&gt;fheight</a></strong><br />
1241 </dt>
1242 <dt><strong><a name="item_fbase">$font_ascent = $term-&gt;fbase</a></strong><br />
1243 </dt>
1244 <dt><strong><a name="item_nrow">$terminal_rows = $term-&gt;nrow</a></strong><br />
1245 </dt>
1246 <dt><strong><a name="item_ncol">$terminal_columns = $term-&gt;ncol</a></strong><br />
1247 </dt>
1248 <dt><strong><a name="item_focus">$has_focus = $term-&gt;focus</a></strong><br />
1249 </dt>
1250 <dt><strong><a name="item_mapped">$is_mapped = $term-&gt;mapped</a></strong><br />
1251 </dt>
1252 <dt><strong><a name="item_savelines">$max_scrollback = $term-&gt;saveLines</a></strong><br />
1253 </dt>
1254 <dt><strong><a name="item_total_rows">$nrow_plus_saveLines = $term-&gt;total_rows</a></strong><br />
1255 </dt>
1256 <dt><strong><a name="item_top_row">$topmost_scrollback_row = $term-&gt;top_row</a></strong><br />
1257 </dt>
1258 <dd>
1259 Return various integers describing terminal characteristics.
1260 </dd>
1261 <p></p>
1262 <dt><strong><a name="item_display_id">$x_display = $term-&gt;display_id</a></strong><br />
1263 </dt>
1264 <dd>
1265 Return the DISPLAY used by rxvt-unicode.
1266 </dd>
1267 <p></p>
1268 <dt><strong><a name="item_locale">$lc_ctype = $term-&gt;locale</a></strong><br />
1269 </dt>
1270 <dd>
1271 Returns the LC_CTYPE category string used by this rxvt-unicode.
1272 </dd>
1273 <p></p>
1274 <dt><strong><a name="item_env">$env = $term-&gt;env</a></strong><br />
1275 </dt>
1276 <dd>
1277 Returns a copy of the environment in effect for the terminal as a hashref
1278 similar to <code>\%ENV</code>.
1279 </dd>
1280 <p></p>
1281 <dt><strong><a name="item_modlevel3mask">$modifiermask = $term-&gt;ModLevel3Mask</a></strong><br />
1282 </dt>
1283 <dt><strong><a name="item_modmetamask">$modifiermask = $term-&gt;ModMetaMask</a></strong><br />
1284 </dt>
1285 <dt><strong><a name="item_modnumlockmask">$modifiermask = $term-&gt;ModNumLockMask</a></strong><br />
1286 </dt>
1287 <dd>
1288 Return the modifier masks corresponding to the ``ISO Level 3 Shift'' (often
1289 AltGr), the meta key (often Alt) and the num lock key, if applicable.
1290 </dd>
1291 <p></p>
1292 <dt><strong><a name="item_current_screen">$screen = $term-&gt;current_screen</a></strong><br />
1293 </dt>
1294 <dd>
1295 Returns the currently displayed screen (0 primary, 1 secondary).
1296 </dd>
1297 <p></p>
1298 <dt><strong><a name="item_hidden_cursor">$cursor_is_hidden = $term-&gt;hidden_cursor</a></strong><br />
1299 </dt>
1300 <dd>
1301 Returns wether the cursor is currently hidden or not.
1302 </dd>
1303 <p></p>
1304 <dt><strong><a name="item_view_start">$view_start = $term-&gt;view_start ([$newvalue])</a></strong><br />
1305 </dt>
1306 <dd>
1307 Returns the row number of the topmost displayed line. Maximum value is
1308 <code>0</code>, which displays the normal terminal contents. Lower values scroll
1309 this many lines into the scrollback buffer.
1310 </dd>
1311 <p></p>
1312 <dt><strong><a name="item_want_refresh">$term-&gt;want_refresh</a></strong><br />
1313 </dt>
1314 <dd>
1315 Requests a screen refresh. At the next opportunity, rxvt-unicode will
1316 compare the on-screen display with its stored representation. If they
1317 differ, it redraws the differences.
1318 </dd>
1319 <dd>
1320 <p>Used after changing terminal contents to display them.</p>
1321 </dd>
1322 <p></p>
1323 <dt><strong><a name="item_row_t">$text = $term-&gt;ROW_t ($row_number[, $new_text[, $start_col]])</a></strong><br />
1324 </dt>
1325 <dd>
1326 Returns the text of the entire row with number <code>$row_number</code>. Row <code>0</code>
1327 is the topmost terminal line, row <code>$term-&gt;$ncol-1</code> is the bottommost
1328 terminal line. The scrollback buffer starts at line <code>-1</code> and extends to
1329 line <code>-$term-&gt;nsaved</code>. Nothing will be returned if a nonexistent line
1330 is requested.
1331 </dd>
1332 <dd>
1333 <p>If <code>$new_text</code> is specified, it will replace characters in the current
1334 line, starting at column <code>$start_col</code> (default <code>0</code>), which is useful
1335 to replace only parts of a line. The font index in the rendition will
1336 automatically be updated.</p>
1337 </dd>
1338 <dd>
1339 <p><a href="#item__24text"><code>$text</code></a> is in a special encoding: tabs and wide characters that use more
1340 than one cell when displayed are padded with <code>$urxvt::NOCHAR</code> (chr 65535)
1341 characters. Characters with combining characters and other characters that
1342 do not fit into the normal tetx encoding will be replaced with characters
1343 in the private use area.</p>
1344 </dd>
1345 <dd>
1346 <p>You have to obey this encoding when changing text. The advantage is
1347 that <code>substr</code> and similar functions work on screen cells and not on
1348 characters.</p>
1349 </dd>
1350 <dd>
1351 <p>The methods <a href="#item_special_encode"><code>$term-&gt;special_encode</code></a> and <a href="#item_special_decode"><code>$term-&gt;special_decode</code></a>
1352 can be used to convert normal strings into this encoding and vice versa.</p>
1353 </dd>
1354 <p></p>
1355 <dt><strong><a name="item_row_r">$rend = $term-&gt;ROW_r ($row_number[, $new_rend[, $start_col]])</a></strong><br />
1356 </dt>
1357 <dd>
1358 Like <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a>, but returns an arrayref with rendition
1359 bitsets. Rendition bitsets contain information about colour, font, font
1360 styles and similar information. See also <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a>.
1361 </dd>
1362 <dd>
1363 <p>When setting rendition, the font mask will be ignored.</p>
1364 </dd>
1365 <dd>
1366 <p>See the section on RENDITION, above.</p>
1367 </dd>
1368 <p></p>
1369 <dt><strong><a name="item_row_l">$length = $term-&gt;ROW_l ($row_number[, $new_length])</a></strong><br />
1370 </dt>
1371 <dd>
1372 Returns the number of screen cells that are in use (``the line
1373 length''). Unlike the urxvt core, this returns <a href="#item_ncol"><code>$term-&gt;ncol</code></a> if the
1374 line is joined with the following one.
1375 </dd>
1376 <p></p>
1377 <dt><strong><a name="item_is_longer">$bool = $term-&gt;is_longer ($row_number)</a></strong><br />
1378 </dt>
1379 <dd>
1380 Returns true if the row is part of a multiple-row logical ``line'' (i.e.
1381 joined with the following row), which means all characters are in use
1382 and it is continued on the next row (and possibly a continuation of the
1383 previous row(s)).
1384 </dd>
1385 <p></p>
1386 <dt><strong><a name="item_line">$line = $term-&gt;line ($row_number)</a></strong><br />
1387 </dt>
1388 <dd>
1389 Create and return a new <code>urxvt::line</code> object that stores information
1390 about the logical line that row <code>$row_number</code> is part of. It supports the
1391 following methods:
1392 </dd>
1393 <dl>
1394 <dt><strong><a name="item_t">$text = $line-&gt;t ([$new_text])</a></strong><br />
1395 </dt>
1396 <dd>
1397 Returns or replaces the full text of the line, similar to <a href="#item_row_t"><code>ROW_t</code></a>
1398 </dd>
1399 <p></p>
1400 <dt><strong><a name="item_r">$rend = $line-&gt;r ([$new_rend])</a></strong><br />
1401 </dt>
1402 <dd>
1403 Returns or replaces the full rendition array of the line, similar to <a href="#item_row_r"><code>ROW_r</code></a>
1404 </dd>
1405 <p></p>
1406 <dt><strong><a name="item_l">$length = $line-&gt;l</a></strong><br />
1407 </dt>
1408 <dd>
1409 Returns the length of the line in cells, similar to <a href="#item_row_l"><code>ROW_l</code></a>.
1410 </dd>
1411 <p></p>
1412 <dt><strong><a name="item_beg">$rownum = $line-&gt;beg</a></strong><br />
1413 </dt>
1414 <dt><strong><a name="item_end">$rownum = $line-&gt;end</a></strong><br />
1415 </dt>
1416 <dd>
1417 Return the row number of the first/last row of the line, respectively.
1418 </dd>
1419 <p></p>
1420 <dt><strong><a name="item_offset_of">$offset = $line-&gt;offset_of ($row, $col)</a></strong><br />
1421 </dt>
1422 <dd>
1423 Returns the character offset of the given row|col pair within the logical
1424 line. Works for rows outside the line, too, and returns corresponding
1425 offsets outside the string.
1426 </dd>
1427 <p></p>
1428 <dt><strong><a name="item_coord_of">($row, $col) = $line-&gt;coord_of ($offset)</a></strong><br />
1429 </dt>
1430 <dd>
1431 Translates a string offset into terminal coordinates again.
1432 </dd>
1433 <p></p></dl>
1434 <dt><strong><a name="item_special_encode">$text = $term-&gt;special_encode $string</a></strong><br />
1435 </dt>
1436 <dd>
1437 Converts a perl string into the special encoding used by rxvt-unicode,
1438 where one character corresponds to one screen cell. See
1439 <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.
1440 </dd>
1441 <p></p>
1442 <dt><strong><a name="item_special_decode">$string = $term-&gt;special_decode $text</a></strong><br />
1443 </dt>
1444 <dd>
1445 Converts rxvt-unicodes text reprsentation into a perl string. See
1446 <a href="#item_row_t"><code>$term-&gt;ROW_t</code></a> for details.
1447 </dd>
1448 <p></p>
1449 <dt><strong><a name="item_grab_button">$success = $term-&gt;grab_button ($button, $modifiermask)</a></strong><br />
1450 </dt>
1451 <dd>
1452 Registers a synchronous button grab. See the XGrabButton manpage.
1453 </dd>
1454 <p></p>
1455 <dt><strong><a name="item_grab">$success = $term-&gt;grab ($eventtime[, $sync])</a></strong><br />
1456 </dt>
1457 <dd>
1458 Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
1459 synchronous (<code>$sync</code> is true). Also remembers the grab timestampe.
1460 </dd>
1461 <p></p>
1462 <dt><strong><a name="item_allow_events_async">$term-&gt;allow_events_async</a></strong><br />
1463 </dt>
1464 <dd>
1465 Calls XAllowEvents with AsyncBoth for the most recent grab.
1466 </dd>
1467 <p></p>
1468 <dt><strong><a name="item_allow_events_sync">$term-&gt;allow_events_sync</a></strong><br />
1469 </dt>
1470 <dd>
1471 Calls XAllowEvents with SyncBoth for the most recent grab.
1472 </dd>
1473 <p></p>
1474 <dt><strong><a name="item_allow_events_replay">$term-&gt;allow_events_replay</a></strong><br />
1475 </dt>
1476 <dd>
1477 Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for the most
1478 recent grab.
1479 </dd>
1480 <p></p>
1481 <dt><strong><a name="item_ungrab">$term-&gt;ungrab</a></strong><br />
1482 </dt>
1483 <dd>
1484 Calls XUngrab for the most recent grab. Is called automatically on
1485 evaluation errors, as it is better to lose the grab in the error case as
1486 the session.
1487 </dd>
1488 <p></p>
1489 <dt><strong><a name="item_xinternatom">$atom = $term-&gt;XInternAtom ($atom_name[, $only_if_exists])</a></strong><br />
1490 </dt>
1491 <dt><strong><a name="item_xgetatomname">$atom_name = $term-&gt;XGetAtomName ($atom)</a></strong><br />
1492 </dt>
1493 <dt><strong><a name="item_xlistproperties">@atoms = $term-&gt;XListProperties ($window)</a></strong><br />
1494 </dt>
1495 <dt><strong><a name="item_xgetwindowproperty">($type,$format,$octets) = $term-&gt;XGetWindowProperty ($window, $property)</a></strong><br />
1496 </dt>
1497 <dt><strong><a name="item_xchangewindowproperty">$term-&gt;XChangeWindowProperty ($window, $property, $type, $format, $octets)</a></strong><br />
1498 </dt>
1499 <dt><strong><a name="item_xdeleteproperty">$term-&gt;XDeleteProperty ($window, $property)</a></strong><br />
1500 </dt>
1501 <dt><strong><a name="item_defaultrootwindow">$window = $term-&gt;DefaultRootWindow</a></strong><br />
1502 </dt>
1503 <dt><strong><a name="item_xreparentwindow">$term-&gt;XReparentWindow ($window, $parent, [$x, $y])</a></strong><br />
1504 </dt>
1505 <dt><strong><a name="item_xmapwindow">$term-&gt;XMapWindow ($window)</a></strong><br />
1506 </dt>
1507 <dt><strong><a name="item_xunmapwindow">$term-&gt;XUnmapWindow ($window)</a></strong><br />
1508 </dt>
1509 <dt><strong><a name="item_xmoveresizewindow">$term-&gt;XMoveResizeWindow ($window, $x, $y, $width, $height)</a></strong><br />
1510 </dt>
1511 <dt><strong><a name="item_xtranslatecoordinates">($x, $y, $child_window) = $term-&gt;XTranslateCoordinates ($src, $dst, $x, $y)</a></strong><br />
1512 </dt>
1513 <dt><strong><a name="item_xchangeinput">$term-&gt;XChangeInput ($window, $add_events[, $del_events])</a></strong><br />
1514 </dt>
1515 <dd>
1516 Various X or X-related functions. The <code>$term</code> object only serves as
1517 the source of the display, otherwise those functions map more-or-less
1518 directory onto the X functions of the same name.
1519 </dd>
1520 <p></p></dl>
1521 <p>
1522 </p>
1523 <h2><a name="the_urxvt__popup_class">The <code>urxvt::popup</code> Class</a></h2>
1524 <dl>
1525 <dt><strong><a name="item_add_title">$popup-&gt;add_title ($title)</a></strong><br />
1526 </dt>
1527 <dd>
1528 Adds a non-clickable title to the popup.
1529 </dd>
1530 <p></p>
1531 <dt><strong><a name="item_add_separator">$popup-&gt;add_separator ([$sepchr])</a></strong><br />
1532 </dt>
1533 <dd>
1534 Creates a separator, optionally using the character given as <code>$sepchr</code>.
1535 </dd>
1536 <p></p>
1537 <dt><strong><a name="item_add_button">$popup-&gt;add_button ($text, $cb)</a></strong><br />
1538 </dt>
1539 <dd>
1540 Adds a clickable button to the popup. <code>$cb</code> is called whenever it is
1541 selected.
1542 </dd>
1543 <p></p>
1544 <dt><strong><a name="item_add_toggle">$popup-&gt;add_toggle ($text, $cb, $initial_value)</a></strong><br />
1545 </dt>
1546 <dd>
1547 Adds a toggle/checkbox item to the popup. Teh callback gets called
1548 whenever it gets toggled, with a boolean indicating its value as its first
1549 argument.
1550 </dd>
1551 <p></p>
1552 <dt><strong>$popup-&gt;show</strong><br />
1553 </dt>
1554 <dd>
1555 Displays the popup (which is initially hidden).
1556 </dd>
1557 <p></p></dl>
1558 <p>
1559 </p>
1560 <h2><a name="the_urxvt__timer_class">The <code>urxvt::timer</code> Class</a></h2>
1561 <p>This class implements timer watchers/events. Time is represented as a
1562 fractional number of seconds since the epoch. Example:</p>
1563 <pre>
1564 $term-&gt;{overlay} = $term-&gt;overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
1565 $term-&gt;{timer} = urxvt::timer
1566 -&gt;new
1567 -&gt;interval (1)
1568 -&gt;cb (sub {
1569 $term-&gt;{overlay}-&gt;set (0, 0,
1570 sprintf &quot;%2d:%02d:%02d&quot;, (localtime urxvt::NOW)[2,1,0]);
1571 });</pre>
1572 <dl>
1573 <dt><strong><a name="item__24timer__3d_new_urxvt_3a_3atimer">$timer = new urxvt::timer</a></strong><br />
1574 </dt>
1575 <dd>
1576 Create a new timer object in started state. It is scheduled to fire
1577 immediately.
1578 </dd>
1579 <p></p>
1580 <dt><strong><a name="item_cb">$timer = $timer-&gt;cb (sub { my ($timer) = @_; ... })</a></strong><br />
1581 </dt>
1582 <dd>
1583 Set the callback to be called when the timer triggers.
1584 </dd>
1585 <p></p>
1586 <dt><strong><a name="item_at">$tstamp = $timer-&gt;at</a></strong><br />
1587 </dt>
1588 <dd>
1589 Return the time this watcher will fire next.
1590 </dd>
1591 <p></p>
1592 <dt><strong>$timer = $timer-&gt;set ($tstamp)</strong><br />
1593 </dt>
1594 <dd>
1595 Set the time the event is generated to $tstamp.
1596 </dd>
1597 <p></p>
1598 <dt><strong><a name="item_interval">$timer = $timer-&gt;interval ($interval)</a></strong><br />
1599 </dt>
1600 <dd>
1601 Normally (and when <code>$interval</code> is <code>0</code>), the timer will automatically
1602 stop after it has fired once. If <code>$interval</code> is non-zero, then the timer
1603 is automatically rescheduled at the given intervals.
1604 </dd>
1605 <p></p>
1606 <dt><strong><a name="item_start">$timer = $timer-&gt;start</a></strong><br />
1607 </dt>
1608 <dd>
1609 Start the timer.
1610 </dd>
1611 <p></p>
1612 <dt><strong>$timer = $timer-&gt;start ($tstamp)</strong><br />
1613 </dt>
1614 <dd>
1615 Set the event trigger time to <code>$tstamp</code> and start the timer.
1616 </dd>
1617 <p></p>
1618 <dt><strong><a name="item_after">$timer = $timer-&gt;after ($delay)</a></strong><br />
1619 </dt>
1620 <dd>
1621 Like <a href="#item_start"><code>start</code></a>, but sets the expiry timer to c&lt;urxvt::NOW + $delay&gt;.
1622 </dd>
1623 <p></p>
1624 <dt><strong><a name="item_stop">$timer = $timer-&gt;stop</a></strong><br />
1625 </dt>
1626 <dd>
1627 Stop the timer.
1628 </dd>
1629 <p></p></dl>
1630 <p>
1631 </p>
1632 <h2><a name="the_urxvt__iow_class">The <code>urxvt::iow</code> Class</a></h2>
1633 <p>This class implements io watchers/events. Example:</p>
1634 <pre>
1635 $term-&gt;{socket} = ...
1636 $term-&gt;{iow} = urxvt::iow
1637 -&gt;new
1638 -&gt;fd (fileno $term-&gt;{socket})
1639 -&gt;events (urxvt::EVENT_READ)
1640 -&gt;start
1641 -&gt;cb (sub {
1642 my ($iow, $revents) = @_;
1643 # $revents must be 1 here, no need to check
1644 sysread $term-&gt;{socket}, my $buf, 8192
1645 or end-of-file;
1646 });</pre>
1647 <dl>
1648 <dt><strong><a name="item__24iow__3d_new_urxvt_3a_3aiow">$iow = new urxvt::iow</a></strong><br />
1649 </dt>
1650 <dd>
1651 Create a new io watcher object in stopped state.
1652 </dd>
1653 <p></p>
1654 <dt><strong>$iow = $iow-&gt;cb (sub { my ($iow, $reventmask) = @_; ... })</strong><br />
1655 </dt>
1656 <dd>
1657 Set the callback to be called when io events are triggered. <code>$reventmask</code>
1658 is a bitset as described in the <a href="#item_events"><code>events</code></a> method.
1659 </dd>
1660 <p></p>
1661 <dt><strong><a name="item_fd">$iow = $iow-&gt;fd ($fd)</a></strong><br />
1662 </dt>
1663 <dd>
1664 Set the filedescriptor (not handle) to watch.
1665 </dd>
1666 <p></p>
1667 <dt><strong><a name="item_events">$iow = $iow-&gt;events ($eventmask)</a></strong><br />
1668 </dt>
1669 <dd>
1670 Set the event mask to watch. The only allowed values are
1671 <code>urxvt::EVENT_READ</code> and <code>urxvt::EVENT_WRITE</code>, which might be ORed
1672 together, or <code>urxvt::EVENT_NONE</code>.
1673 </dd>
1674 <p></p>
1675 <dt><strong>$iow = $iow-&gt;start</strong><br />
1676 </dt>
1677 <dd>
1678 Start watching for requested events on the given handle.
1679 </dd>
1680 <p></p>
1681 <dt><strong>$iow = $iow-&gt;stop</strong><br />
1682 </dt>
1683 <dd>
1684 Stop watching for events on the given filehandle.
1685 </dd>
1686 <p></p></dl>
1687 <p>
1688 </p>
1689 <h2><a name="the_urxvt__iw_class">The <code>urxvt::iw</code> Class</a></h2>
1690 <p>This class implements idle watchers, that get called automatically when
1691 the process is idle. They should return as fast as possible, after doing
1692 some useful work.</p>
1693 <dl>
1694 <dt><strong><a name="item__24iw__3d_new_urxvt_3a_3aiw">$iw = new urxvt::iw</a></strong><br />
1695 </dt>
1696 <dd>
1697 Create a new idle watcher object in stopped state.
1698 </dd>
1699 <p></p>
1700 <dt><strong>$iw = $iw-&gt;cb (sub { my ($iw) = @_; ... })</strong><br />
1701 </dt>
1702 <dd>
1703 Set the callback to be called when the watcher triggers.
1704 </dd>
1705 <p></p>
1706 <dt><strong>$timer = $timer-&gt;start</strong><br />
1707 </dt>
1708 <dd>
1709 Start the watcher.
1710 </dd>
1711 <p></p>
1712 <dt><strong>$timer = $timer-&gt;stop</strong><br />
1713 </dt>
1714 <dd>
1715 Stop the watcher.
1716 </dd>
1717 <p></p></dl>
1718 <p>
1719 </p>
1720 <h2><a name="the_urxvt__pw_class">The <code>urxvt::pw</code> Class</a></h2>
1721 <p>This class implements process watchers. They create an event whenever a
1722 process exits, after which they stop automatically.</p>
1723 <pre>
1724 my $pid = fork;
1725 ...
1726 $term-&gt;{pw} = urxvt::pw
1727 -&gt;new
1728 -&gt;start ($pid)
1729 -&gt;cb (sub {
1730 my ($pw, $exit_status) = @_;
1731 ...
1732 });</pre>
1733 <dl>
1734 <dt><strong><a name="item__24pw__3d_new_urxvt_3a_3apw">$pw = new urxvt::pw</a></strong><br />
1735 </dt>
1736 <dd>
1737 Create a new process watcher in stopped state.
1738 </dd>
1739 <p></p>
1740 <dt><strong>$pw = $pw-&gt;cb (sub { my ($pw, $exit_status) = @_; ... })</strong><br />
1741 </dt>
1742 <dd>
1743 Set the callback to be called when the timer triggers.
1744 </dd>
1745 <p></p>
1746 <dt><strong>$pw = $timer-&gt;start ($pid)</strong><br />
1747 </dt>
1748 <dd>
1749 Tells the wqtcher to start watching for process <code>$pid</code>.
1750 </dd>
1751 <p></p>
1752 <dt><strong>$pw = $pw-&gt;stop</strong><br />
1753 </dt>
1754 <dd>
1755 Stop the watcher.
1756 </dd>
1757 <p></p></dl>
1758 <p>
1759 </p>
1760 <hr />
1761 <h1><a name="environment">ENVIRONMENT</a></h1>
1762 <p>
1763 </p>
1764 <h2><a name="urxvt_perl_verbosity">URXVT_PERL_VERBOSITY</a></h2>
1765 <p>This variable controls the verbosity level of the perl extension. Higher
1766 numbers indicate more verbose output.</p>
1767 <dl>
1768 <dt><strong><a name="item__3d_3d_0__2d_fatal_messages">== 0 - fatal messages</a></strong><br />
1769 </dt>
1770 <dt><strong><a name="item__3e_3d_3__2d_script_loading_and_management">&gt;= 3 - script loading and management</a></strong><br />
1771 </dt>
1772 <dt><strong><a name="item__3e_3d10__2d_all_called_hooks">&gt;=10 - all called hooks</a></strong><br />
1773 </dt>
1774 <dt><strong><a name="item__3e_3d11__2d_hook_reutrn_values">&gt;=11 - hook reutrn values</a></strong><br />
1775 </dt>
1776 </dl>
1777 <p>
1778 </p>
1779 <hr />
1780 <h1><a name="author">AUTHOR</a></h1>
1781 <pre>
1782 Marc Lehmann &lt;pcg@goof.com&gt;
1783 <a href="http://software.schmorp.de/pkg/rxvt-unicode">http://software.schmorp.de/pkg/rxvt-unicode</a></pre>
1784
1785 </body>
1786
1787 </html>