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.\" ======================================================================== |
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.\" |
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.IX Title "rxvt 3" |
132 |
.TH rxvt 3 "2006-01-02" "6.2" "RXVT-UNICODE" |
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.SH "NAME" |
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rxvtperl \- rxvt\-unicode's embedded perl interpreter |
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.SH "SYNOPSIS" |
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.IX Header "SYNOPSIS" |
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* Put your scripts into \fI@@RXVT_LIBDIR@@/urxvt/perl\-ext/\fR, they will be loaded automatically. |
138 |
.PP |
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* Scripts are evaluated in a 'use strict' and 'use utf8' environment, and |
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thus must be encoded as \s-1UTF\-8\s0. |
141 |
.PP |
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.Vb 4 |
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\& sub on_sel_grab { |
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\& warn "you selected ", $_[0]->selection; |
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\& () |
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\& } |
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.Ve |
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.PP |
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.Vb 1 |
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\& 1 |
151 |
.Ve |
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.SH "DESCRIPTION" |
153 |
.IX Header "DESCRIPTION" |
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On startup, @@RXVT_NAME@@ will scan \fI@@RXVT_LIBDIR@@/urxvt/perl\-ext/\fR |
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for files and will load them. Everytime a terminal object gets created, |
156 |
the directory specified by the \f(CW\*(C`perl\-lib\*(C'\fR resource will be additionally |
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scanned. |
158 |
.PP |
159 |
Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where |
160 |
scripts will be shared for all terminals. |
161 |
.PP |
162 |
Hooks in scripts specified by \f(CW\*(C`perl\-lib\*(C'\fR will only be called for the |
163 |
terminals created with that specific option value. |
164 |
.Sh "General \s-1API\s0 Considerations" |
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.IX Subsection "General API Considerations" |
166 |
All objects (such as terminals, time watchers etc.) are typical |
167 |
reference-to-hash objects. The hash can be used to store anything you |
168 |
like. All members starting with an underscore (such as \f(CW\*(C`_ptr\*(C'\fR or |
169 |
\&\f(CW\*(C`_hook\*(C'\fR) are reserved for internal uses and must not be accessed or |
170 |
modified). |
171 |
.PP |
172 |
When objects are destroyed on the \*(C+ side, the perl object hashes are |
173 |
emptied, so its best to store related objects such as time watchers and |
174 |
the like inside the terminal object so they get destroyed as soon as the |
175 |
terminal is destroyed. |
176 |
.Sh "Hooks" |
177 |
.IX Subsection "Hooks" |
178 |
The following subroutines can be declared in loaded scripts, and will be called |
179 |
whenever the relevant event happens. |
180 |
.PP |
181 |
All of them must return a boolean value. If it is true, then the event |
182 |
counts as being \fIconsumed\fR, and the invocation of other hooks is skipped, |
183 |
and the relevant action might not be carried out by the \*(C+ code. |
184 |
.PP |
185 |
When in doubt, return a false value (preferably \f(CW\*(C`()\*(C'\fR). |
186 |
.ie n .IP "on_init $term" 4 |
187 |
.el .IP "on_init \f(CW$term\fR" 4 |
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.IX Item "on_init $term" |
189 |
Called after a new terminal object has been initialized, but before |
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windows are created or the command gets run. |
191 |
.ie n .IP "on_reset $term" 4 |
192 |
.el .IP "on_reset \f(CW$term\fR" 4 |
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.IX Item "on_reset $term" |
194 |
Called after the screen is \*(L"reset\*(R" for any reason, such as resizing or |
195 |
control sequences. Here is where you can react on changes to size-related |
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variables. |
197 |
.ie n .IP "on_start $term" 4 |
198 |
.el .IP "on_start \f(CW$term\fR" 4 |
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.IX Item "on_start $term" |
200 |
Called at the very end of initialisation of a new terminal, just before |
201 |
returning to the mainloop. |
202 |
.ie n .IP "on_sel_make $term\fR, \f(CW$eventtime" 4 |
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.el .IP "on_sel_make \f(CW$term\fR, \f(CW$eventtime\fR" 4 |
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.IX Item "on_sel_make $term, $eventtime" |
205 |
Called whenever a selection has been made by the user, but before the |
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selection text is copied, so changes to the beginning, end or type of the |
207 |
selection will be honored. |
208 |
.Sp |
209 |
Returning a true value aborts selection making by urxvt, in which case you |
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have to make a selection yourself by calling \f(CW\*(C`$term\->selection_grab\*(C'\fR. |
211 |
.ie n .IP "on_sel_grab $term\fR, \f(CW$eventtime" 4 |
212 |
.el .IP "on_sel_grab \f(CW$term\fR, \f(CW$eventtime\fR" 4 |
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.IX Item "on_sel_grab $term, $eventtime" |
214 |
Called whenever a selection has been copied, but before the selection is |
215 |
requested from the server. The selection text can be queried and changed |
216 |
by calling \f(CW\*(C`$term\->selection\*(C'\fR. |
217 |
.Sp |
218 |
Returning a true value aborts selection grabbing. It will still be hilighted. |
219 |
.ie n .IP "on_focus_in $term" 4 |
220 |
.el .IP "on_focus_in \f(CW$term\fR" 4 |
221 |
.IX Item "on_focus_in $term" |
222 |
Called whenever the window gets the keyboard focus, before urxvt does |
223 |
focus in processing. |
224 |
.ie n .IP "on_focus_out $term" 4 |
225 |
.el .IP "on_focus_out \f(CW$term\fR" 4 |
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.IX Item "on_focus_out $term" |
227 |
Called wheneever the window loses keyboard focus, before urxvt does focus |
228 |
out processing. |
229 |
.ie n .IP "on_view_change $term\fR, \f(CW$offset" 4 |
230 |
.el .IP "on_view_change \f(CW$term\fR, \f(CW$offset\fR" 4 |
231 |
.IX Item "on_view_change $term, $offset" |
232 |
Called whenever the view offset changes, i..e the user or program |
233 |
scrolls. Offset \f(CW0\fR means display the normal terminal, positive values |
234 |
show this many lines of scrollback. |
235 |
.ie n .IP "on_scroll_back $term\fR, \f(CW$lines\fR, \f(CW$saved" 4 |
236 |
.el .IP "on_scroll_back \f(CW$term\fR, \f(CW$lines\fR, \f(CW$saved\fR" 4 |
237 |
.IX Item "on_scroll_back $term, $lines, $saved" |
238 |
Called whenever lines scroll out of the terminal area into the scrollback |
239 |
buffer. \f(CW$lines\fR is the number of lines scrolled out and may be larger |
240 |
than the scroll back buffer or the terminal. |
241 |
.Sp |
242 |
It is called before lines are scrolled out (so rows 0 .. min ($lines \- 1, |
243 |
\&\f(CW$nrow\fR \- 1) represent the lines to be scrolled out). \f(CW$saved\fR is the total |
244 |
number of lines that will be in the scrollback buffer. |
245 |
.ie n .IP "on_tty_activity $term *NYI*" 4 |
246 |
.el .IP "on_tty_activity \f(CW$term\fR *NYI*" 4 |
247 |
.IX Item "on_tty_activity $term *NYI*" |
248 |
Called whenever the program(s) running in the urxvt window send output. |
249 |
.ie n .IP "on_refresh_begin $term" 4 |
250 |
.el .IP "on_refresh_begin \f(CW$term\fR" 4 |
251 |
.IX Item "on_refresh_begin $term" |
252 |
Called just before the screen gets redrawn. Can be used for overlay |
253 |
or similar effects by modify terminal contents in refresh_begin, and |
254 |
restoring them in refresh_end. The built-in overlay and selection display |
255 |
code is run after this hook, and takes precedence. |
256 |
.ie n .IP "on_refresh_end $term" 4 |
257 |
.el .IP "on_refresh_end \f(CW$term\fR" 4 |
258 |
.IX Item "on_refresh_end $term" |
259 |
Called just after the screen gets redrawn. See \f(CW\*(C`on_refresh_begin\*(C'\fR. |
260 |
.ie n .Sh "Functions in the ""urxvt"" Package" |
261 |
.el .Sh "Functions in the \f(CWurxvt\fP Package" |
262 |
.IX Subsection "Functions in the urxvt Package" |
263 |
.ie n .IP "urxvt::fatal $errormessage" 4 |
264 |
.el .IP "urxvt::fatal \f(CW$errormessage\fR" 4 |
265 |
.IX Item "urxvt::fatal $errormessage" |
266 |
Fatally aborts execution with the given error message. Avoid at all |
267 |
costs! The only time this is acceptable is when the terminal process |
268 |
starts up. |
269 |
.ie n .IP "urxvt::warn $string" 4 |
270 |
.el .IP "urxvt::warn \f(CW$string\fR" 4 |
271 |
.IX Item "urxvt::warn $string" |
272 |
Calls \f(CW\*(C`rxvt_warn\*(C'\fR with the given string which should not include a |
273 |
newline. The module also overwrites the \f(CW\*(C`warn\*(C'\fR builtin with a function |
274 |
that calls this function. |
275 |
.Sp |
276 |
Using this function has the advantage that its output ends up in the |
277 |
correct place, e.g. on stderr of the connecting urxvtc client. |
278 |
.IP "$time = urxvt::NOW" 4 |
279 |
.IX Item "$time = urxvt::NOW" |
280 |
Returns the \*(L"current time\*(R" (as per the event loop). |
281 |
.ie n .Sh "The ""urxvt::term"" Class" |
282 |
.el .Sh "The \f(CWurxvt::term\fP Class" |
283 |
.IX Subsection "The urxvt::term Class" |
284 |
.ie n .IP "$value = $term\fR\->resource ($name[, \f(CW$newval])" 4 |
285 |
.el .IP "$value = \f(CW$term\fR\->resource ($name[, \f(CW$newval\fR])" 4 |
286 |
.IX Item "$value = $term->resource ($name[, $newval])" |
287 |
Returns the current resource value associated with a given name and |
288 |
optionally sets a new value. Setting values is most useful in the \f(CW\*(C`init\*(C'\fR |
289 |
hook. Unset resources are returned and accepted as \f(CW\*(C`undef\*(C'\fR. |
290 |
.Sp |
291 |
The new value must be properly encoded to a suitable character encoding |
292 |
before passing it to this method. Similarly, the returned value may need |
293 |
to be converted from the used encoding to text. |
294 |
.Sp |
295 |
Resource names are as defined in \fIsrc/rsinc.h\fR. Colours can be specified |
296 |
as resource names of the form \f(CW\*(C`color+<index>\*(C'\fR, e.g. \f(CW\*(C`color+5\*(C'\fR. (will |
297 |
likely change). |
298 |
.Sp |
299 |
Please note that resource strings will currently only be freed when the |
300 |
terminal is destroyed, so changing options frequently will eat memory. |
301 |
.Sp |
302 |
Here is a a likely non-exhaustive list of resource names, not all of which |
303 |
are supported in every build, please see the source to see the actual |
304 |
list: |
305 |
.Sp |
306 |
.Vb 12 |
307 |
\& answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont |
308 |
\& borderLess color cursorBlink cursorUnderline cutchars delete_key |
309 |
\& display_name embed ext_bwidth fade font geometry hold iconName |
310 |
\& imFont imLocale inputMethod insecure int_bwidth intensityStyles |
311 |
\& italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 |
312 |
\& modifier mouseWheelScrollPage name pastableTabs path perl perl_eval |
313 |
\& perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd |
314 |
\& reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating |
315 |
\& scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput |
316 |
\& scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle |
317 |
\& shade term_name title transparent transparent_all tripleclickwords |
318 |
\& utmpInhibit visualBell |
319 |
.Ve |
320 |
.ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_mark ([$row, \f(CW$col])" 4 |
321 |
.el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_mark ([$row, \f(CW$col\fR])" 4 |
322 |
.IX Item "($row, $col) = $term->selection_mark ([$row, $col])" |
323 |
.PD 0 |
324 |
.ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_beg ([$row, \f(CW$col])" 4 |
325 |
.el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_beg ([$row, \f(CW$col\fR])" 4 |
326 |
.IX Item "($row, $col) = $term->selection_beg ([$row, $col])" |
327 |
.ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_end ([$row, \f(CW$col])" 4 |
328 |
.el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_end ([$row, \f(CW$col\fR])" 4 |
329 |
.IX Item "($row, $col) = $term->selection_end ([$row, $col])" |
330 |
.PD |
331 |
Return the current values of the selection mark, begin or end positions, |
332 |
and optionally set them to new values. |
333 |
.ie n .IP "$success = $term\->selection_grab ($eventtime)" 4 |
334 |
.el .IP "$success = \f(CW$term\fR\->selection_grab ($eventtime)" 4 |
335 |
.IX Item "$success = $term->selection_grab ($eventtime)" |
336 |
Try to request the primary selection from the server (for example, as set |
337 |
by the next method). |
338 |
.ie n .IP "$oldtext = $term\->selection ([$newtext])" 4 |
339 |
.el .IP "$oldtext = \f(CW$term\fR\->selection ([$newtext])" 4 |
340 |
.IX Item "$oldtext = $term->selection ([$newtext])" |
341 |
Return the current selection text and optionally replace it by \f(CW$newtext\fR. |
342 |
.ie n .IP "$term\->scr_overlay ($x, $y\fR, \f(CW$text)" 4 |
343 |
.el .IP "$term\->scr_overlay ($x, \f(CW$y\fR, \f(CW$text\fR)" 4 |
344 |
.IX Item "$term->scr_overlay ($x, $y, $text)" |
345 |
Create a simple multi-line overlay box. See the next method for details. |
346 |
.ie n .IP "$term\->scr_overlay_new ($x, $y\fR, \f(CW$width\fR, \f(CW$height)" 4 |
347 |
.el .IP "$term\->scr_overlay_new ($x, \f(CW$y\fR, \f(CW$width\fR, \f(CW$height\fR)" 4 |
348 |
.IX Item "$term->scr_overlay_new ($x, $y, $width, $height)" |
349 |
Create a new (empty) overlay at the given position with the given |
350 |
width/height. A border will be put around the box. If either \f(CW$x\fR or |
351 |
\&\f(CW$y\fR is negative, then this is counted from the right/bottom side, |
352 |
respectively. |
353 |
.IP "$term\->scr_overlay_off" 4 |
354 |
.IX Item "$term->scr_overlay_off" |
355 |
Switch the overlay off again. |
356 |
.ie n .IP "$term\->scr_overlay_set_char ($x, $y\fR, \f(CW$char\fR, \f(CW$rend = \s-1OVERLAY_RSTYLE\s0)" 4 |
357 |
.el .IP "$term\->scr_overlay_set_char ($x, \f(CW$y\fR, \f(CW$char\fR, \f(CW$rend\fR = \s-1OVERLAY_RSTYLE\s0)" 4 |
358 |
.IX Item "$term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)" |
359 |
Put a single character (specified numerically) at the given overlay |
360 |
position. |
361 |
.ie n .IP "$term\->scr_overlay_set ($x, $y\fR, \f(CW$text)" 4 |
362 |
.el .IP "$term\->scr_overlay_set ($x, \f(CW$y\fR, \f(CW$text\fR)" 4 |
363 |
.IX Item "$term->scr_overlay_set ($x, $y, $text)" |
364 |
Write a string at the given position into the overlay. |
365 |
.ie n .IP "$cellwidth = $term\fR\->strwidth \f(CW$string" 4 |
366 |
.el .IP "$cellwidth = \f(CW$term\fR\->strwidth \f(CW$string\fR" 4 |
367 |
.IX Item "$cellwidth = $term->strwidth $string" |
368 |
Returns the number of screen-cells this string would need. Correctly |
369 |
accounts for wide and combining characters. |
370 |
.ie n .IP "$octets = $term\fR\->locale_encode \f(CW$string" 4 |
371 |
.el .IP "$octets = \f(CW$term\fR\->locale_encode \f(CW$string\fR" 4 |
372 |
.IX Item "$octets = $term->locale_encode $string" |
373 |
Convert the given text string into the corresponding locale encoding. |
374 |
.ie n .IP "$string = $term\fR\->locale_decode \f(CW$octets" 4 |
375 |
.el .IP "$string = \f(CW$term\fR\->locale_decode \f(CW$octets\fR" 4 |
376 |
.IX Item "$string = $term->locale_decode $octets" |
377 |
Convert the given locale-encoded octets into a perl string. |
378 |
.IP "$term\->tt_write ($octets)" 4 |
379 |
.IX Item "$term->tt_write ($octets)" |
380 |
Write the octets given in \f(CW$data\fR to the tty (i.e. as program input). To |
381 |
pass characters instead of octets, you should convetr you strings first to |
382 |
the locale-specific encoding using \f(CW\*(C`$term\->locale_encode\*(C'\fR. |
383 |
.ie n .Sh "The ""urxvt::timer"" Class" |
384 |
.el .Sh "The \f(CWurxvt::timer\fP Class" |
385 |
.IX Subsection "The urxvt::timer Class" |
386 |
This class implements timer watchers/events. Time is represented as a |
387 |
fractional number of seconds since the epoch. Example: |
388 |
.PP |
389 |
.Vb 11 |
390 |
\& # create a digital clock display in upper right corner |
391 |
\& $term->{timer} = urxvt::timer |
392 |
\& ->new |
393 |
\& ->start (urxvt::NOW) |
394 |
\& ->cb (sub { |
395 |
\& my ($timer) = @_; |
396 |
\& my $time = $timer->at; |
397 |
\& $timer->start ($time + 1); |
398 |
\& $self->scr_overlay (-1, 0, |
399 |
\& POSIX::strftime "%H:%M:%S", localtime $time); |
400 |
\& }); |
401 |
.Ve |
402 |
.IP "$timer = new urxvt::timer" 4 |
403 |
.IX Item "$timer = new urxvt::timer" |
404 |
Create a new timer object in stopped state. |
405 |
.ie n .IP "$timer = $timer\fR\->cb (sub { my ($timer) = \f(CW@_; ... })" 4 |
406 |
.el .IP "$timer = \f(CW$timer\fR\->cb (sub { my ($timer) = \f(CW@_\fR; ... })" 4 |
407 |
.IX Item "$timer = $timer->cb (sub { my ($timer) = @_; ... })" |
408 |
Set the callback to be called when the timer triggers. |
409 |
.ie n .IP "$tstamp = $timer\->at" 4 |
410 |
.el .IP "$tstamp = \f(CW$timer\fR\->at" 4 |
411 |
.IX Item "$tstamp = $timer->at" |
412 |
Return the time this watcher will fire next. |
413 |
.ie n .IP "$timer = $timer\->set ($tstamp)" 4 |
414 |
.el .IP "$timer = \f(CW$timer\fR\->set ($tstamp)" 4 |
415 |
.IX Item "$timer = $timer->set ($tstamp)" |
416 |
Set the time the event is generated to \f(CW$tstamp\fR. |
417 |
.ie n .IP "$timer = $timer\->start" 4 |
418 |
.el .IP "$timer = \f(CW$timer\fR\->start" 4 |
419 |
.IX Item "$timer = $timer->start" |
420 |
Start the timer. |
421 |
.ie n .IP "$timer = $timer\->start ($tstamp)" 4 |
422 |
.el .IP "$timer = \f(CW$timer\fR\->start ($tstamp)" 4 |
423 |
.IX Item "$timer = $timer->start ($tstamp)" |
424 |
Set the event trigger time to \f(CW$tstamp\fR and start the timer. |
425 |
.ie n .IP "$timer = $timer\->stop" 4 |
426 |
.el .IP "$timer = \f(CW$timer\fR\->stop" 4 |
427 |
.IX Item "$timer = $timer->stop" |
428 |
Stop the timer. |
429 |
.ie n .Sh "The ""urxvt::iow"" Class" |
430 |
.el .Sh "The \f(CWurxvt::iow\fP Class" |
431 |
.IX Subsection "The urxvt::iow Class" |
432 |
This class implements io watchers/events. Example: |
433 |
.PP |
434 |
.Vb 12 |
435 |
\& $term->{socket} = ... |
436 |
\& $term->{iow} = urxvt::iow |
437 |
\& ->new |
438 |
\& ->fd (fileno $term->{socket}) |
439 |
\& ->events (1) # wait for read data |
440 |
\& ->start |
441 |
\& ->cb (sub { |
442 |
\& my ($iow, $revents) = @_; |
443 |
\& # $revents must be 1 here, no need to check |
444 |
\& sysread $term->{socket}, my $buf, 8192 |
445 |
\& or end-of-file; |
446 |
\& }); |
447 |
.Ve |
448 |
.IP "$iow = new urxvt::iow" 4 |
449 |
.IX Item "$iow = new urxvt::iow" |
450 |
Create a new io watcher object in stopped state. |
451 |
.ie n .IP "$iow = $iow\fR\->cb (sub { my ($iow, \f(CW$reventmask\fR) = \f(CW@_; ... })" 4 |
452 |
.el .IP "$iow = \f(CW$iow\fR\->cb (sub { my ($iow, \f(CW$reventmask\fR) = \f(CW@_\fR; ... })" 4 |
453 |
.IX Item "$iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... })" |
454 |
Set the callback to be called when io events are triggered. \f(CW$reventmask\fR |
455 |
is a bitset as described in the \f(CW\*(C`events\*(C'\fR method. |
456 |
.ie n .IP "$iow = $iow\->fd ($fd)" 4 |
457 |
.el .IP "$iow = \f(CW$iow\fR\->fd ($fd)" 4 |
458 |
.IX Item "$iow = $iow->fd ($fd)" |
459 |
Set the filedescriptor (not handle) to watch. |
460 |
.ie n .IP "$iow = $iow\->events ($eventmask)" 4 |
461 |
.el .IP "$iow = \f(CW$iow\fR\->events ($eventmask)" 4 |
462 |
.IX Item "$iow = $iow->events ($eventmask)" |
463 |
Set the event mask to watch. Bit #0 (value \f(CW1\fR) enables watching for read |
464 |
data, Bit #1 (value \f(CW2\fR) enables watching for write data. |
465 |
.ie n .IP "$iow = $iow\->start" 4 |
466 |
.el .IP "$iow = \f(CW$iow\fR\->start" 4 |
467 |
.IX Item "$iow = $iow->start" |
468 |
Start watching for requested events on the given handle. |
469 |
.ie n .IP "$iow = $iow\->stop" 4 |
470 |
.el .IP "$iow = \f(CW$iow\fR\->stop" 4 |
471 |
.IX Item "$iow = $iow->stop" |
472 |
Stop watching for events on the given filehandle. |
473 |
.SH "ENVIRONMENT" |
474 |
.IX Header "ENVIRONMENT" |
475 |
.Sh "\s-1URXVT_PERL_VERBOSITY\s0" |
476 |
.IX Subsection "URXVT_PERL_VERBOSITY" |
477 |
This variable controls the verbosity level of the perl extension. Higher |
478 |
numbers indicate more verbose output. |
479 |
.IP "0 \- only fatal messages" 4 |
480 |
.IX Item "0 - only fatal messages" |
481 |
.PD 0 |
482 |
.IP "3 \- script loading and management" 4 |
483 |
.IX Item "3 - script loading and management" |
484 |
.IP "10 \- all events received" 4 |
485 |
.IX Item "10 - all events received" |
486 |
.PD |
487 |
.SH "AUTHOR" |
488 |
.IX Header "AUTHOR" |
489 |
.Vb 2 |
490 |
\& Marc Lehmann <pcg@goof.com> |
491 |
\& http://software.schmorp.de/pkg/rxvt-unicode |
492 |
.Ve |