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Revision: 1.3
Committed: Mon Jan 2 19:36:07 2006 UTC (18 years, 6 months ago) by root
Branch: MAIN
Changes since 1.2: +48 -16 lines
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131     .IX Title "rxvt 3"
132     .TH rxvt 3 "2006-01-02" "6.2" "RXVT-UNICODE"
133     .SH "NAME"
134     rxvtperl \- rxvt\-unicode's embedded perl interpreter
135     .SH "SYNOPSIS"
136     .IX Header "SYNOPSIS"
137     * Put your scripts into \fI@@RXVT_LIBDIR@@/urxvt/perl\-ext/\fR, they will be loaded automatically.
138     .PP
139     * Scripts are evaluated in a 'use strict' and 'use utf8' environment, and
140     thus must be encoded as \s-1UTF\-8\s0.
141     .PP
142     .Vb 4
143     \& sub on_sel_grab {
144     \& warn "you selected ", $_[0]->selection;
145     \& ()
146     \& }
147     .Ve
148     .PP
149     .Vb 1
150     \& 1
151     .Ve
152     .SH "DESCRIPTION"
153     .IX Header "DESCRIPTION"
154 root 1.3 On startup, @@RXVT_NAME@@ will scan \fI@@RXVT_LIBDIR@@/urxvt/perl\-ext/\fR
155     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
157     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"
165     .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 root 1.1 .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
188     .IX Item "on_init $term"
189     Called after a new terminal object has been initialized, but before
190     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
193     .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
196     variables.
197     .ie n .IP "on_start $term" 4
198     .el .IP "on_start \f(CW$term\fR" 4
199     .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
203     .el .IP "on_sel_make \f(CW$term\fR, \f(CW$eventtime\fR" 4
204     .IX Item "on_sel_make $term, $eventtime"
205     Called whenever a selection has been made by the user, but before the
206     selection text is copied, so changes to the beginning, end or type of the
207     selection will be honored.
208     .Sp
209     Returning a true value aborts selection making by urxvt, in which case you
210     have to make a selection yourself by calling \f(CW\*(C`$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
213     .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
226     .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 $string"
272 root 1.3 Calls \f(CW\*(C`rxvt_warn\*(C'\fR with the given string which should not include a
273 root 1.1 newline. The module also overwrites the \f(CW\*(C`warn\*(C'\fR builtin with a function
274     that calls this function.
275     .Sp
276     Using this function has the advantage that its output ends up in the
277     correct place, e.g. on stderr of the connecting urxvtc client.
278     .IP "$time = urxvt::NOW" 4
279     .IX Item "$time = urxvt::NOW"
280     Returns the \*(L"current time\*(R" (as per the event loop).
281     .ie n .Sh "The ""urxvt::term"" Class"
282     .el .Sh "The \f(CWurxvt::term\fP Class"
283     .IX Subsection "The urxvt::term Class"
284 root 1.2 .ie n .IP "$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 root 1.3 \& 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 root 1.2 .Ve
320 root 1.1 .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, $text)"
364     Write a string at the given position into the overlay.
365 root 1.3 .ie n .IP "$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 root 1.1 .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 root 1.2 .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 root 1.1 .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