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Revision: 1.5
Committed: Mon Jan 2 21:41:51 2006 UTC (18 years, 6 months ago) by root
Branch: MAIN
Changes since 1.4: +19 -7 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 root 1.5 @@RXVT_NAME@@perl \- rxvt\-unicode's embedded perl interpreter
135 root 1.1 .SH "SYNOPSIS"
136     .IX Header "SYNOPSIS"
137 root 1.5 .Vb 1
138     \& # create a file grab_test in $HOME:
139     .Ve
140 root 1.1 .PP
141     .Vb 4
142     \& sub on_sel_grab {
143     \& warn "you selected ", $_[0]->selection;
144     \& ()
145     \& }
146     .Ve
147     .PP
148     .Vb 1
149 root 1.5 \& # start a @@RXVT_NAME@@ using it:
150     .Ve
151     .PP
152     .Vb 1
153     \& @@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
154 root 1.1 .Ve
155     .SH "DESCRIPTION"
156     .IX Header "DESCRIPTION"
157 root 1.4 Everytime a terminal object gets created, scripts specified via the
158 root 1.5 \&\f(CW\*(C`perl\*(C'\fR resource are loaded and associated with it.
159     .PP
160     Scripts are compiled in a 'use strict' and 'use utf8' environment, and
161     thus must be encoded as \s-1UTF\-8\s0.
162 root 1.3 .PP
163     Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
164 root 1.4 scripts will be shared (But not enabled) for all terminals.
165 root 1.3 .Sh "General \s-1API\s0 Considerations"
166     .IX Subsection "General API Considerations"
167     All objects (such as terminals, time watchers etc.) are typical
168     reference-to-hash objects. The hash can be used to store anything you
169     like. All members starting with an underscore (such as \f(CW\*(C`_ptr\*(C'\fR or
170     \&\f(CW\*(C`_hook\*(C'\fR) are reserved for internal uses and must not be accessed or
171     modified).
172     .PP
173     When objects are destroyed on the \*(C+ side, the perl object hashes are
174     emptied, so its best to store related objects such as time watchers and
175     the like inside the terminal object so they get destroyed as soon as the
176     terminal is destroyed.
177 root 1.1 .Sh "Hooks"
178     .IX Subsection "Hooks"
179     The following subroutines can be declared in loaded scripts, and will be called
180     whenever the relevant event happens.
181     .PP
182     All of them must return a boolean value. If it is true, then the event
183     counts as being \fIconsumed\fR, and the invocation of other hooks is skipped,
184     and the relevant action might not be carried out by the \*(C+ code.
185     .PP
186     When in doubt, return a false value (preferably \f(CW\*(C`()\*(C'\fR).
187     .ie n .IP "on_init $term" 4
188     .el .IP "on_init \f(CW$term\fR" 4
189     .IX Item "on_init $term"
190     Called after a new terminal object has been initialized, but before
191     windows are created or the command gets run.
192     .ie n .IP "on_reset $term" 4
193     .el .IP "on_reset \f(CW$term\fR" 4
194     .IX Item "on_reset $term"
195     Called after the screen is \*(L"reset\*(R" for any reason, such as resizing or
196     control sequences. Here is where you can react on changes to size-related
197     variables.
198     .ie n .IP "on_start $term" 4
199     .el .IP "on_start \f(CW$term\fR" 4
200     .IX Item "on_start $term"
201     Called at the very end of initialisation of a new terminal, just before
202     returning to the mainloop.
203     .ie n .IP "on_sel_make $term\fR, \f(CW$eventtime" 4
204     .el .IP "on_sel_make \f(CW$term\fR, \f(CW$eventtime\fR" 4
205     .IX Item "on_sel_make $term, $eventtime"
206     Called whenever a selection has been made by the user, but before the
207     selection text is copied, so changes to the beginning, end or type of the
208     selection will be honored.
209     .Sp
210     Returning a true value aborts selection making by urxvt, in which case you
211     have to make a selection yourself by calling \f(CW\*(C`$term\->selection_grab\*(C'\fR.
212     .ie n .IP "on_sel_grab $term\fR, \f(CW$eventtime" 4
213     .el .IP "on_sel_grab \f(CW$term\fR, \f(CW$eventtime\fR" 4
214     .IX Item "on_sel_grab $term, $eventtime"
215     Called whenever a selection has been copied, but before the selection is
216     requested from the server. The selection text can be queried and changed
217     by calling \f(CW\*(C`$term\->selection\*(C'\fR.
218     .Sp
219     Returning a true value aborts selection grabbing. It will still be hilighted.
220     .ie n .IP "on_focus_in $term" 4
221     .el .IP "on_focus_in \f(CW$term\fR" 4
222     .IX Item "on_focus_in $term"
223     Called whenever the window gets the keyboard focus, before urxvt does
224     focus in processing.
225     .ie n .IP "on_focus_out $term" 4
226     .el .IP "on_focus_out \f(CW$term\fR" 4
227     .IX Item "on_focus_out $term"
228     Called wheneever the window loses keyboard focus, before urxvt does focus
229     out processing.
230     .ie n .IP "on_view_change $term\fR, \f(CW$offset" 4
231     .el .IP "on_view_change \f(CW$term\fR, \f(CW$offset\fR" 4
232     .IX Item "on_view_change $term, $offset"
233     Called whenever the view offset changes, i..e the user or program
234     scrolls. Offset \f(CW0\fR means display the normal terminal, positive values
235     show this many lines of scrollback.
236     .ie n .IP "on_scroll_back $term\fR, \f(CW$lines\fR, \f(CW$saved" 4
237     .el .IP "on_scroll_back \f(CW$term\fR, \f(CW$lines\fR, \f(CW$saved\fR" 4
238     .IX Item "on_scroll_back $term, $lines, $saved"
239     Called whenever lines scroll out of the terminal area into the scrollback
240     buffer. \f(CW$lines\fR is the number of lines scrolled out and may be larger
241     than the scroll back buffer or the terminal.
242     .Sp
243     It is called before lines are scrolled out (so rows 0 .. min ($lines \- 1,
244     \&\f(CW$nrow\fR \- 1) represent the lines to be scrolled out). \f(CW$saved\fR is the total
245     number of lines that will be in the scrollback buffer.
246     .ie n .IP "on_tty_activity $term *NYI*" 4
247     .el .IP "on_tty_activity \f(CW$term\fR *NYI*" 4
248     .IX Item "on_tty_activity $term *NYI*"
249     Called whenever the program(s) running in the urxvt window send output.
250     .ie n .IP "on_refresh_begin $term" 4
251     .el .IP "on_refresh_begin \f(CW$term\fR" 4
252     .IX Item "on_refresh_begin $term"
253     Called just before the screen gets redrawn. Can be used for overlay
254     or similar effects by modify terminal contents in refresh_begin, and
255     restoring them in refresh_end. The built-in overlay and selection display
256     code is run after this hook, and takes precedence.
257     .ie n .IP "on_refresh_end $term" 4
258     .el .IP "on_refresh_end \f(CW$term\fR" 4
259     .IX Item "on_refresh_end $term"
260     Called just after the screen gets redrawn. See \f(CW\*(C`on_refresh_begin\*(C'\fR.
261 root 1.5 .ie n .IP "on_keyboard_command $term\fR, \f(CW$string" 4
262     .el .IP "on_keyboard_command \f(CW$term\fR, \f(CW$string\fR" 4
263     .IX Item "on_keyboard_command $term, $string"
264     Called whenever the user presses a key combination that has a
265     \&\f(CW\*(C`perl:string\*(C'\fR action bound to it (see description of the \fBkeysym\fR
266     resource in the @@RXVT_NAME@@(1) manpage).
267 root 1.1 .ie n .Sh "Functions in the ""urxvt"" Package"
268     .el .Sh "Functions in the \f(CWurxvt\fP Package"
269     .IX Subsection "Functions in the urxvt Package"
270     .ie n .IP "urxvt::fatal $errormessage" 4
271     .el .IP "urxvt::fatal \f(CW$errormessage\fR" 4
272     .IX Item "urxvt::fatal $errormessage"
273     Fatally aborts execution with the given error message. Avoid at all
274     costs! The only time this is acceptable is when the terminal process
275     starts up.
276     .ie n .IP "urxvt::warn $string" 4
277     .el .IP "urxvt::warn \f(CW$string\fR" 4
278     .IX Item "urxvt::warn $string"
279 root 1.3 Calls \f(CW\*(C`rxvt_warn\*(C'\fR with the given string which should not include a
280 root 1.1 newline. The module also overwrites the \f(CW\*(C`warn\*(C'\fR builtin with a function
281     that calls this function.
282     .Sp
283     Using this function has the advantage that its output ends up in the
284     correct place, e.g. on stderr of the connecting urxvtc client.
285     .IP "$time = urxvt::NOW" 4
286     .IX Item "$time = urxvt::NOW"
287     Returns the \*(L"current time\*(R" (as per the event loop).
288     .ie n .Sh "The ""urxvt::term"" Class"
289     .el .Sh "The \f(CWurxvt::term\fP Class"
290     .IX Subsection "The urxvt::term Class"
291 root 1.2 .ie n .IP "$value = $term\fR\->resource ($name[, \f(CW$newval])" 4
292     .el .IP "$value = \f(CW$term\fR\->resource ($name[, \f(CW$newval\fR])" 4
293     .IX Item "$value = $term->resource ($name[, $newval])"
294     Returns the current resource value associated with a given name and
295     optionally sets a new value. Setting values is most useful in the \f(CW\*(C`init\*(C'\fR
296     hook. Unset resources are returned and accepted as \f(CW\*(C`undef\*(C'\fR.
297     .Sp
298     The new value must be properly encoded to a suitable character encoding
299     before passing it to this method. Similarly, the returned value may need
300     to be converted from the used encoding to text.
301     .Sp
302     Resource names are as defined in \fIsrc/rsinc.h\fR. Colours can be specified
303     as resource names of the form \f(CW\*(C`color+<index>\*(C'\fR, e.g. \f(CW\*(C`color+5\*(C'\fR. (will
304     likely change).
305     .Sp
306     Please note that resource strings will currently only be freed when the
307     terminal is destroyed, so changing options frequently will eat memory.
308     .Sp
309     Here is a a likely non-exhaustive list of resource names, not all of which
310     are supported in every build, please see the source to see the actual
311     list:
312     .Sp
313     .Vb 12
314     \& answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
315     \& borderLess color cursorBlink cursorUnderline cutchars delete_key
316     \& display_name embed ext_bwidth fade font geometry hold iconName
317     \& imFont imLocale inputMethod insecure int_bwidth intensityStyles
318 root 1.4 \& italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
319     \& mouseWheelScrollPage name pastableTabs path perl_eval perl_ext
320 root 1.3 \& perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
321     \& reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
322     \& scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
323     \& scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
324     \& shade term_name title transparent transparent_all tripleclickwords
325     \& utmpInhibit visualBell
326 root 1.2 .Ve
327 root 1.1 .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_mark ([$row, \f(CW$col])" 4
328     .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_mark ([$row, \f(CW$col\fR])" 4
329     .IX Item "($row, $col) = $term->selection_mark ([$row, $col])"
330     .PD 0
331     .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_beg ([$row, \f(CW$col])" 4
332     .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_beg ([$row, \f(CW$col\fR])" 4
333     .IX Item "($row, $col) = $term->selection_beg ([$row, $col])"
334     .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_end ([$row, \f(CW$col])" 4
335     .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_end ([$row, \f(CW$col\fR])" 4
336     .IX Item "($row, $col) = $term->selection_end ([$row, $col])"
337     .PD
338     Return the current values of the selection mark, begin or end positions,
339     and optionally set them to new values.
340     .ie n .IP "$success = $term\->selection_grab ($eventtime)" 4
341     .el .IP "$success = \f(CW$term\fR\->selection_grab ($eventtime)" 4
342     .IX Item "$success = $term->selection_grab ($eventtime)"
343     Try to request the primary selection from the server (for example, as set
344     by the next method).
345     .ie n .IP "$oldtext = $term\->selection ([$newtext])" 4
346     .el .IP "$oldtext = \f(CW$term\fR\->selection ([$newtext])" 4
347     .IX Item "$oldtext = $term->selection ([$newtext])"
348     Return the current selection text and optionally replace it by \f(CW$newtext\fR.
349     .ie n .IP "$term\->scr_overlay ($x, $y\fR, \f(CW$text)" 4
350     .el .IP "$term\->scr_overlay ($x, \f(CW$y\fR, \f(CW$text\fR)" 4
351     .IX Item "$term->scr_overlay ($x, $y, $text)"
352     Create a simple multi-line overlay box. See the next method for details.
353     .ie n .IP "$term\->scr_overlay_new ($x, $y\fR, \f(CW$width\fR, \f(CW$height)" 4
354     .el .IP "$term\->scr_overlay_new ($x, \f(CW$y\fR, \f(CW$width\fR, \f(CW$height\fR)" 4
355     .IX Item "$term->scr_overlay_new ($x, $y, $width, $height)"
356     Create a new (empty) overlay at the given position with the given
357     width/height. A border will be put around the box. If either \f(CW$x\fR or
358     \&\f(CW$y\fR is negative, then this is counted from the right/bottom side,
359     respectively.
360     .IP "$term\->scr_overlay_off" 4
361     .IX Item "$term->scr_overlay_off"
362     Switch the overlay off again.
363     .ie n .IP "$term\->scr_overlay_set_char ($x, $y\fR, \f(CW$char\fR, \f(CW$rend = \s-1OVERLAY_RSTYLE\s0)" 4
364     .el .IP "$term\->scr_overlay_set_char ($x, \f(CW$y\fR, \f(CW$char\fR, \f(CW$rend\fR = \s-1OVERLAY_RSTYLE\s0)" 4
365     .IX Item "$term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)"
366     Put a single character (specified numerically) at the given overlay
367     position.
368     .ie n .IP "$term\->scr_overlay_set ($x, $y\fR, \f(CW$text)" 4
369     .el .IP "$term\->scr_overlay_set ($x, \f(CW$y\fR, \f(CW$text\fR)" 4
370     .IX Item "$term->scr_overlay_set ($x, $y, $text)"
371     Write a string at the given position into the overlay.
372 root 1.3 .ie n .IP "$cellwidth = $term\fR\->strwidth \f(CW$string" 4
373     .el .IP "$cellwidth = \f(CW$term\fR\->strwidth \f(CW$string\fR" 4
374     .IX Item "$cellwidth = $term->strwidth $string"
375     Returns the number of screen-cells this string would need. Correctly
376     accounts for wide and combining characters.
377     .ie n .IP "$octets = $term\fR\->locale_encode \f(CW$string" 4
378     .el .IP "$octets = \f(CW$term\fR\->locale_encode \f(CW$string\fR" 4
379     .IX Item "$octets = $term->locale_encode $string"
380     Convert the given text string into the corresponding locale encoding.
381     .ie n .IP "$string = $term\fR\->locale_decode \f(CW$octets" 4
382     .el .IP "$string = \f(CW$term\fR\->locale_decode \f(CW$octets\fR" 4
383     .IX Item "$string = $term->locale_decode $octets"
384     Convert the given locale-encoded octets into a perl string.
385     .IP "$term\->tt_write ($octets)" 4
386     .IX Item "$term->tt_write ($octets)"
387     Write the octets given in \f(CW$data\fR to the tty (i.e. as program input). To
388     pass characters instead of octets, you should convetr you strings first to
389     the locale-specific encoding using \f(CW\*(C`$term\->locale_encode\*(C'\fR.
390 root 1.1 .ie n .Sh "The ""urxvt::timer"" Class"
391     .el .Sh "The \f(CWurxvt::timer\fP Class"
392     .IX Subsection "The urxvt::timer Class"
393     This class implements timer watchers/events. Time is represented as a
394     fractional number of seconds since the epoch. Example:
395     .PP
396     .Vb 11
397     \& # create a digital clock display in upper right corner
398     \& $term->{timer} = urxvt::timer
399     \& ->new
400     \& ->start (urxvt::NOW)
401     \& ->cb (sub {
402     \& my ($timer) = @_;
403     \& my $time = $timer->at;
404     \& $timer->start ($time + 1);
405     \& $self->scr_overlay (-1, 0,
406     \& POSIX::strftime "%H:%M:%S", localtime $time);
407     \& });
408     .Ve
409     .IP "$timer = new urxvt::timer" 4
410     .IX Item "$timer = new urxvt::timer"
411     Create a new timer object in stopped state.
412     .ie n .IP "$timer = $timer\fR\->cb (sub { my ($timer) = \f(CW@_; ... })" 4
413     .el .IP "$timer = \f(CW$timer\fR\->cb (sub { my ($timer) = \f(CW@_\fR; ... })" 4
414     .IX Item "$timer = $timer->cb (sub { my ($timer) = @_; ... })"
415     Set the callback to be called when the timer triggers.
416     .ie n .IP "$tstamp = $timer\->at" 4
417     .el .IP "$tstamp = \f(CW$timer\fR\->at" 4
418     .IX Item "$tstamp = $timer->at"
419     Return the time this watcher will fire next.
420     .ie n .IP "$timer = $timer\->set ($tstamp)" 4
421     .el .IP "$timer = \f(CW$timer\fR\->set ($tstamp)" 4
422     .IX Item "$timer = $timer->set ($tstamp)"
423     Set the time the event is generated to \f(CW$tstamp\fR.
424     .ie n .IP "$timer = $timer\->start" 4
425     .el .IP "$timer = \f(CW$timer\fR\->start" 4
426     .IX Item "$timer = $timer->start"
427     Start the timer.
428     .ie n .IP "$timer = $timer\->start ($tstamp)" 4
429     .el .IP "$timer = \f(CW$timer\fR\->start ($tstamp)" 4
430     .IX Item "$timer = $timer->start ($tstamp)"
431     Set the event trigger time to \f(CW$tstamp\fR and start the timer.
432     .ie n .IP "$timer = $timer\->stop" 4
433     .el .IP "$timer = \f(CW$timer\fR\->stop" 4
434     .IX Item "$timer = $timer->stop"
435     Stop the timer.
436     .ie n .Sh "The ""urxvt::iow"" Class"
437     .el .Sh "The \f(CWurxvt::iow\fP Class"
438     .IX Subsection "The urxvt::iow Class"
439     This class implements io watchers/events. Example:
440     .PP
441     .Vb 12
442     \& $term->{socket} = ...
443     \& $term->{iow} = urxvt::iow
444     \& ->new
445     \& ->fd (fileno $term->{socket})
446     \& ->events (1) # wait for read data
447     \& ->start
448     \& ->cb (sub {
449     \& my ($iow, $revents) = @_;
450     \& # $revents must be 1 here, no need to check
451     \& sysread $term->{socket}, my $buf, 8192
452     \& or end-of-file;
453     \& });
454     .Ve
455     .IP "$iow = new urxvt::iow" 4
456     .IX Item "$iow = new urxvt::iow"
457     Create a new io watcher object in stopped state.
458     .ie n .IP "$iow = $iow\fR\->cb (sub { my ($iow, \f(CW$reventmask\fR) = \f(CW@_; ... })" 4
459     .el .IP "$iow = \f(CW$iow\fR\->cb (sub { my ($iow, \f(CW$reventmask\fR) = \f(CW@_\fR; ... })" 4
460     .IX Item "$iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... })"
461     Set the callback to be called when io events are triggered. \f(CW$reventmask\fR
462     is a bitset as described in the \f(CW\*(C`events\*(C'\fR method.
463     .ie n .IP "$iow = $iow\->fd ($fd)" 4
464     .el .IP "$iow = \f(CW$iow\fR\->fd ($fd)" 4
465     .IX Item "$iow = $iow->fd ($fd)"
466     Set the filedescriptor (not handle) to watch.
467     .ie n .IP "$iow = $iow\->events ($eventmask)" 4
468     .el .IP "$iow = \f(CW$iow\fR\->events ($eventmask)" 4
469     .IX Item "$iow = $iow->events ($eventmask)"
470     Set the event mask to watch. Bit #0 (value \f(CW1\fR) enables watching for read
471     data, Bit #1 (value \f(CW2\fR) enables watching for write data.
472     .ie n .IP "$iow = $iow\->start" 4
473     .el .IP "$iow = \f(CW$iow\fR\->start" 4
474     .IX Item "$iow = $iow->start"
475     Start watching for requested events on the given handle.
476     .ie n .IP "$iow = $iow\->stop" 4
477     .el .IP "$iow = \f(CW$iow\fR\->stop" 4
478     .IX Item "$iow = $iow->stop"
479     Stop watching for events on the given filehandle.
480 root 1.2 .SH "ENVIRONMENT"
481     .IX Header "ENVIRONMENT"
482     .Sh "\s-1URXVT_PERL_VERBOSITY\s0"
483     .IX Subsection "URXVT_PERL_VERBOSITY"
484     This variable controls the verbosity level of the perl extension. Higher
485     numbers indicate more verbose output.
486     .IP "0 \- only fatal messages" 4
487     .IX Item "0 - only fatal messages"
488     .PD 0
489     .IP "3 \- script loading and management" 4
490     .IX Item "3 - script loading and management"
491     .IP "10 \- all events received" 4
492     .IX Item "10 - all events received"
493     .PD
494 root 1.1 .SH "AUTHOR"
495     .IX Header "AUTHOR"
496     .Vb 2
497     \& Marc Lehmann <pcg@goof.com>
498     \& http://software.schmorp.de/pkg/rxvt-unicode
499     .Ve