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Revision: 1.4
Committed: Mon Jan 2 20:35:39 2006 UTC (18 years, 6 months ago) by root
Branch: MAIN
Changes since 1.3: +5 -10 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 1.4 Everytime a terminal object gets created, scripts specified via the
155     \&\f(CW\*(C`perl\*(C'\fR resource are associated with it.
156 root 1.3 .PP
157     Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
158 root 1.4 scripts will be shared (But not enabled) for all terminals.
159 root 1.3 .Sh "General \s-1API\s0 Considerations"
160     .IX Subsection "General API Considerations"
161     All objects (such as terminals, time watchers etc.) are typical
162     reference-to-hash objects. The hash can be used to store anything you
163     like. All members starting with an underscore (such as \f(CW\*(C`_ptr\*(C'\fR or
164     \&\f(CW\*(C`_hook\*(C'\fR) are reserved for internal uses and must not be accessed or
165     modified).
166     .PP
167     When objects are destroyed on the \*(C+ side, the perl object hashes are
168     emptied, so its best to store related objects such as time watchers and
169     the like inside the terminal object so they get destroyed as soon as the
170     terminal is destroyed.
171 root 1.1 .Sh "Hooks"
172     .IX Subsection "Hooks"
173     The following subroutines can be declared in loaded scripts, and will be called
174     whenever the relevant event happens.
175     .PP
176     All of them must return a boolean value. If it is true, then the event
177     counts as being \fIconsumed\fR, and the invocation of other hooks is skipped,
178     and the relevant action might not be carried out by the \*(C+ code.
179     .PP
180     When in doubt, return a false value (preferably \f(CW\*(C`()\*(C'\fR).
181     .ie n .IP "on_init $term" 4
182     .el .IP "on_init \f(CW$term\fR" 4
183     .IX Item "on_init $term"
184     Called after a new terminal object has been initialized, but before
185     windows are created or the command gets run.
186     .ie n .IP "on_reset $term" 4
187     .el .IP "on_reset \f(CW$term\fR" 4
188     .IX Item "on_reset $term"
189     Called after the screen is \*(L"reset\*(R" for any reason, such as resizing or
190     control sequences. Here is where you can react on changes to size-related
191     variables.
192     .ie n .IP "on_start $term" 4
193     .el .IP "on_start \f(CW$term\fR" 4
194     .IX Item "on_start $term"
195     Called at the very end of initialisation of a new terminal, just before
196     returning to the mainloop.
197     .ie n .IP "on_sel_make $term\fR, \f(CW$eventtime" 4
198     .el .IP "on_sel_make \f(CW$term\fR, \f(CW$eventtime\fR" 4
199     .IX Item "on_sel_make $term, $eventtime"
200     Called whenever a selection has been made by the user, but before the
201     selection text is copied, so changes to the beginning, end or type of the
202     selection will be honored.
203     .Sp
204     Returning a true value aborts selection making by urxvt, in which case you
205     have to make a selection yourself by calling \f(CW\*(C`$term\->selection_grab\*(C'\fR.
206     .ie n .IP "on_sel_grab $term\fR, \f(CW$eventtime" 4
207     .el .IP "on_sel_grab \f(CW$term\fR, \f(CW$eventtime\fR" 4
208     .IX Item "on_sel_grab $term, $eventtime"
209     Called whenever a selection has been copied, but before the selection is
210     requested from the server. The selection text can be queried and changed
211     by calling \f(CW\*(C`$term\->selection\*(C'\fR.
212     .Sp
213     Returning a true value aborts selection grabbing. It will still be hilighted.
214     .ie n .IP "on_focus_in $term" 4
215     .el .IP "on_focus_in \f(CW$term\fR" 4
216     .IX Item "on_focus_in $term"
217     Called whenever the window gets the keyboard focus, before urxvt does
218     focus in processing.
219     .ie n .IP "on_focus_out $term" 4
220     .el .IP "on_focus_out \f(CW$term\fR" 4
221     .IX Item "on_focus_out $term"
222     Called wheneever the window loses keyboard focus, before urxvt does focus
223     out processing.
224     .ie n .IP "on_view_change $term\fR, \f(CW$offset" 4
225     .el .IP "on_view_change \f(CW$term\fR, \f(CW$offset\fR" 4
226     .IX Item "on_view_change $term, $offset"
227     Called whenever the view offset changes, i..e the user or program
228     scrolls. Offset \f(CW0\fR means display the normal terminal, positive values
229     show this many lines of scrollback.
230     .ie n .IP "on_scroll_back $term\fR, \f(CW$lines\fR, \f(CW$saved" 4
231     .el .IP "on_scroll_back \f(CW$term\fR, \f(CW$lines\fR, \f(CW$saved\fR" 4
232     .IX Item "on_scroll_back $term, $lines, $saved"
233     Called whenever lines scroll out of the terminal area into the scrollback
234     buffer. \f(CW$lines\fR is the number of lines scrolled out and may be larger
235     than the scroll back buffer or the terminal.
236     .Sp
237     It is called before lines are scrolled out (so rows 0 .. min ($lines \- 1,
238     \&\f(CW$nrow\fR \- 1) represent the lines to be scrolled out). \f(CW$saved\fR is the total
239     number of lines that will be in the scrollback buffer.
240     .ie n .IP "on_tty_activity $term *NYI*" 4
241     .el .IP "on_tty_activity \f(CW$term\fR *NYI*" 4
242     .IX Item "on_tty_activity $term *NYI*"
243     Called whenever the program(s) running in the urxvt window send output.
244     .ie n .IP "on_refresh_begin $term" 4
245     .el .IP "on_refresh_begin \f(CW$term\fR" 4
246     .IX Item "on_refresh_begin $term"
247     Called just before the screen gets redrawn. Can be used for overlay
248     or similar effects by modify terminal contents in refresh_begin, and
249     restoring them in refresh_end. The built-in overlay and selection display
250     code is run after this hook, and takes precedence.
251     .ie n .IP "on_refresh_end $term" 4
252     .el .IP "on_refresh_end \f(CW$term\fR" 4
253     .IX Item "on_refresh_end $term"
254     Called just after the screen gets redrawn. See \f(CW\*(C`on_refresh_begin\*(C'\fR.
255     .ie n .Sh "Functions in the ""urxvt"" Package"
256     .el .Sh "Functions in the \f(CWurxvt\fP Package"
257     .IX Subsection "Functions in the urxvt Package"
258     .ie n .IP "urxvt::fatal $errormessage" 4
259     .el .IP "urxvt::fatal \f(CW$errormessage\fR" 4
260     .IX Item "urxvt::fatal $errormessage"
261     Fatally aborts execution with the given error message. Avoid at all
262     costs! The only time this is acceptable is when the terminal process
263     starts up.
264     .ie n .IP "urxvt::warn $string" 4
265     .el .IP "urxvt::warn \f(CW$string\fR" 4
266     .IX Item "urxvt::warn $string"
267 root 1.3 Calls \f(CW\*(C`rxvt_warn\*(C'\fR with the given string which should not include a
268 root 1.1 newline. The module also overwrites the \f(CW\*(C`warn\*(C'\fR builtin with a function
269     that calls this function.
270     .Sp
271     Using this function has the advantage that its output ends up in the
272     correct place, e.g. on stderr of the connecting urxvtc client.
273     .IP "$time = urxvt::NOW" 4
274     .IX Item "$time = urxvt::NOW"
275     Returns the \*(L"current time\*(R" (as per the event loop).
276     .ie n .Sh "The ""urxvt::term"" Class"
277     .el .Sh "The \f(CWurxvt::term\fP Class"
278     .IX Subsection "The urxvt::term Class"
279 root 1.2 .ie n .IP "$value = $term\fR\->resource ($name[, \f(CW$newval])" 4
280     .el .IP "$value = \f(CW$term\fR\->resource ($name[, \f(CW$newval\fR])" 4
281     .IX Item "$value = $term->resource ($name[, $newval])"
282     Returns the current resource value associated with a given name and
283     optionally sets a new value. Setting values is most useful in the \f(CW\*(C`init\*(C'\fR
284     hook. Unset resources are returned and accepted as \f(CW\*(C`undef\*(C'\fR.
285     .Sp
286     The new value must be properly encoded to a suitable character encoding
287     before passing it to this method. Similarly, the returned value may need
288     to be converted from the used encoding to text.
289     .Sp
290     Resource names are as defined in \fIsrc/rsinc.h\fR. Colours can be specified
291     as resource names of the form \f(CW\*(C`color+<index>\*(C'\fR, e.g. \f(CW\*(C`color+5\*(C'\fR. (will
292     likely change).
293     .Sp
294     Please note that resource strings will currently only be freed when the
295     terminal is destroyed, so changing options frequently will eat memory.
296     .Sp
297     Here is a a likely non-exhaustive list of resource names, not all of which
298     are supported in every build, please see the source to see the actual
299     list:
300     .Sp
301     .Vb 12
302     \& answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
303     \& borderLess color cursorBlink cursorUnderline cutchars delete_key
304     \& display_name embed ext_bwidth fade font geometry hold iconName
305     \& imFont imLocale inputMethod insecure int_bwidth intensityStyles
306 root 1.4 \& italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
307     \& mouseWheelScrollPage name pastableTabs path perl_eval perl_ext
308 root 1.3 \& perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
309     \& reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
310     \& scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
311     \& scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
312     \& shade term_name title transparent transparent_all tripleclickwords
313     \& utmpInhibit visualBell
314 root 1.2 .Ve
315 root 1.1 .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_mark ([$row, \f(CW$col])" 4
316     .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_mark ([$row, \f(CW$col\fR])" 4
317     .IX Item "($row, $col) = $term->selection_mark ([$row, $col])"
318     .PD 0
319     .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_beg ([$row, \f(CW$col])" 4
320     .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_beg ([$row, \f(CW$col\fR])" 4
321     .IX Item "($row, $col) = $term->selection_beg ([$row, $col])"
322     .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_end ([$row, \f(CW$col])" 4
323     .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_end ([$row, \f(CW$col\fR])" 4
324     .IX Item "($row, $col) = $term->selection_end ([$row, $col])"
325     .PD
326     Return the current values of the selection mark, begin or end positions,
327     and optionally set them to new values.
328     .ie n .IP "$success = $term\->selection_grab ($eventtime)" 4
329     .el .IP "$success = \f(CW$term\fR\->selection_grab ($eventtime)" 4
330     .IX Item "$success = $term->selection_grab ($eventtime)"
331     Try to request the primary selection from the server (for example, as set
332     by the next method).
333     .ie n .IP "$oldtext = $term\->selection ([$newtext])" 4
334     .el .IP "$oldtext = \f(CW$term\fR\->selection ([$newtext])" 4
335     .IX Item "$oldtext = $term->selection ([$newtext])"
336     Return the current selection text and optionally replace it by \f(CW$newtext\fR.
337     .ie n .IP "$term\->scr_overlay ($x, $y\fR, \f(CW$text)" 4
338     .el .IP "$term\->scr_overlay ($x, \f(CW$y\fR, \f(CW$text\fR)" 4
339     .IX Item "$term->scr_overlay ($x, $y, $text)"
340     Create a simple multi-line overlay box. See the next method for details.
341     .ie n .IP "$term\->scr_overlay_new ($x, $y\fR, \f(CW$width\fR, \f(CW$height)" 4
342     .el .IP "$term\->scr_overlay_new ($x, \f(CW$y\fR, \f(CW$width\fR, \f(CW$height\fR)" 4
343     .IX Item "$term->scr_overlay_new ($x, $y, $width, $height)"
344     Create a new (empty) overlay at the given position with the given
345     width/height. A border will be put around the box. If either \f(CW$x\fR or
346     \&\f(CW$y\fR is negative, then this is counted from the right/bottom side,
347     respectively.
348     .IP "$term\->scr_overlay_off" 4
349     .IX Item "$term->scr_overlay_off"
350     Switch the overlay off again.
351     .ie n .IP "$term\->scr_overlay_set_char ($x, $y\fR, \f(CW$char\fR, \f(CW$rend = \s-1OVERLAY_RSTYLE\s0)" 4
352     .el .IP "$term\->scr_overlay_set_char ($x, \f(CW$y\fR, \f(CW$char\fR, \f(CW$rend\fR = \s-1OVERLAY_RSTYLE\s0)" 4
353     .IX Item "$term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)"
354     Put a single character (specified numerically) at the given overlay
355     position.
356     .ie n .IP "$term\->scr_overlay_set ($x, $y\fR, \f(CW$text)" 4
357     .el .IP "$term\->scr_overlay_set ($x, \f(CW$y\fR, \f(CW$text\fR)" 4
358     .IX Item "$term->scr_overlay_set ($x, $y, $text)"
359     Write a string at the given position into the overlay.
360 root 1.3 .ie n .IP "$cellwidth = $term\fR\->strwidth \f(CW$string" 4
361     .el .IP "$cellwidth = \f(CW$term\fR\->strwidth \f(CW$string\fR" 4
362     .IX Item "$cellwidth = $term->strwidth $string"
363     Returns the number of screen-cells this string would need. Correctly
364     accounts for wide and combining characters.
365     .ie n .IP "$octets = $term\fR\->locale_encode \f(CW$string" 4
366     .el .IP "$octets = \f(CW$term\fR\->locale_encode \f(CW$string\fR" 4
367     .IX Item "$octets = $term->locale_encode $string"
368     Convert the given text string into the corresponding locale encoding.
369     .ie n .IP "$string = $term\fR\->locale_decode \f(CW$octets" 4
370     .el .IP "$string = \f(CW$term\fR\->locale_decode \f(CW$octets\fR" 4
371     .IX Item "$string = $term->locale_decode $octets"
372     Convert the given locale-encoded octets into a perl string.
373     .IP "$term\->tt_write ($octets)" 4
374     .IX Item "$term->tt_write ($octets)"
375     Write the octets given in \f(CW$data\fR to the tty (i.e. as program input). To
376     pass characters instead of octets, you should convetr you strings first to
377     the locale-specific encoding using \f(CW\*(C`$term\->locale_encode\*(C'\fR.
378 root 1.1 .ie n .Sh "The ""urxvt::timer"" Class"
379     .el .Sh "The \f(CWurxvt::timer\fP Class"
380     .IX Subsection "The urxvt::timer Class"
381     This class implements timer watchers/events. Time is represented as a
382     fractional number of seconds since the epoch. Example:
383     .PP
384     .Vb 11
385     \& # create a digital clock display in upper right corner
386     \& $term->{timer} = urxvt::timer
387     \& ->new
388     \& ->start (urxvt::NOW)
389     \& ->cb (sub {
390     \& my ($timer) = @_;
391     \& my $time = $timer->at;
392     \& $timer->start ($time + 1);
393     \& $self->scr_overlay (-1, 0,
394     \& POSIX::strftime "%H:%M:%S", localtime $time);
395     \& });
396     .Ve
397     .IP "$timer = new urxvt::timer" 4
398     .IX Item "$timer = new urxvt::timer"
399     Create a new timer object in stopped state.
400     .ie n .IP "$timer = $timer\fR\->cb (sub { my ($timer) = \f(CW@_; ... })" 4
401     .el .IP "$timer = \f(CW$timer\fR\->cb (sub { my ($timer) = \f(CW@_\fR; ... })" 4
402     .IX Item "$timer = $timer->cb (sub { my ($timer) = @_; ... })"
403     Set the callback to be called when the timer triggers.
404     .ie n .IP "$tstamp = $timer\->at" 4
405     .el .IP "$tstamp = \f(CW$timer\fR\->at" 4
406     .IX Item "$tstamp = $timer->at"
407     Return the time this watcher will fire next.
408     .ie n .IP "$timer = $timer\->set ($tstamp)" 4
409     .el .IP "$timer = \f(CW$timer\fR\->set ($tstamp)" 4
410     .IX Item "$timer = $timer->set ($tstamp)"
411     Set the time the event is generated to \f(CW$tstamp\fR.
412     .ie n .IP "$timer = $timer\->start" 4
413     .el .IP "$timer = \f(CW$timer\fR\->start" 4
414     .IX Item "$timer = $timer->start"
415     Start the timer.
416     .ie n .IP "$timer = $timer\->start ($tstamp)" 4
417     .el .IP "$timer = \f(CW$timer\fR\->start ($tstamp)" 4
418     .IX Item "$timer = $timer->start ($tstamp)"
419     Set the event trigger time to \f(CW$tstamp\fR and start the timer.
420     .ie n .IP "$timer = $timer\->stop" 4
421     .el .IP "$timer = \f(CW$timer\fR\->stop" 4
422     .IX Item "$timer = $timer->stop"
423     Stop the timer.
424     .ie n .Sh "The ""urxvt::iow"" Class"
425     .el .Sh "The \f(CWurxvt::iow\fP Class"
426     .IX Subsection "The urxvt::iow Class"
427     This class implements io watchers/events. Example:
428     .PP
429     .Vb 12
430     \& $term->{socket} = ...
431     \& $term->{iow} = urxvt::iow
432     \& ->new
433     \& ->fd (fileno $term->{socket})
434     \& ->events (1) # wait for read data
435     \& ->start
436     \& ->cb (sub {
437     \& my ($iow, $revents) = @_;
438     \& # $revents must be 1 here, no need to check
439     \& sysread $term->{socket}, my $buf, 8192
440     \& or end-of-file;
441     \& });
442     .Ve
443     .IP "$iow = new urxvt::iow" 4
444     .IX Item "$iow = new urxvt::iow"
445     Create a new io watcher object in stopped state.
446     .ie n .IP "$iow = $iow\fR\->cb (sub { my ($iow, \f(CW$reventmask\fR) = \f(CW@_; ... })" 4
447     .el .IP "$iow = \f(CW$iow\fR\->cb (sub { my ($iow, \f(CW$reventmask\fR) = \f(CW@_\fR; ... })" 4
448     .IX Item "$iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... })"
449     Set the callback to be called when io events are triggered. \f(CW$reventmask\fR
450     is a bitset as described in the \f(CW\*(C`events\*(C'\fR method.
451     .ie n .IP "$iow = $iow\->fd ($fd)" 4
452     .el .IP "$iow = \f(CW$iow\fR\->fd ($fd)" 4
453     .IX Item "$iow = $iow->fd ($fd)"
454     Set the filedescriptor (not handle) to watch.
455     .ie n .IP "$iow = $iow\->events ($eventmask)" 4
456     .el .IP "$iow = \f(CW$iow\fR\->events ($eventmask)" 4
457     .IX Item "$iow = $iow->events ($eventmask)"
458     Set the event mask to watch. Bit #0 (value \f(CW1\fR) enables watching for read
459     data, Bit #1 (value \f(CW2\fR) enables watching for write data.
460     .ie n .IP "$iow = $iow\->start" 4
461     .el .IP "$iow = \f(CW$iow\fR\->start" 4
462     .IX Item "$iow = $iow->start"
463     Start watching for requested events on the given handle.
464     .ie n .IP "$iow = $iow\->stop" 4
465     .el .IP "$iow = \f(CW$iow\fR\->stop" 4
466     .IX Item "$iow = $iow->stop"
467     Stop watching for events on the given filehandle.
468 root 1.2 .SH "ENVIRONMENT"
469     .IX Header "ENVIRONMENT"
470     .Sh "\s-1URXVT_PERL_VERBOSITY\s0"
471     .IX Subsection "URXVT_PERL_VERBOSITY"
472     This variable controls the verbosity level of the perl extension. Higher
473     numbers indicate more verbose output.
474     .IP "0 \- only fatal messages" 4
475     .IX Item "0 - only fatal messages"
476     .PD 0
477     .IP "3 \- script loading and management" 4
478     .IX Item "3 - script loading and management"
479     .IP "10 \- all events received" 4
480     .IX Item "10 - all events received"
481     .PD
482 root 1.1 .SH "AUTHOR"
483     .IX Header "AUTHOR"
484     .Vb 2
485     \& Marc Lehmann <pcg@goof.com>
486     \& http://software.schmorp.de/pkg/rxvt-unicode
487     .Ve