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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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File Contents

# Content
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131 .IX Title "rxvt 3"
132 .TH rxvt 3 "2006-01-02" "6.2" "RXVT-UNICODE"
133 .SH "NAME"
134 @@RXVT_NAME@@perl \- rxvt\-unicode's embedded perl interpreter
135 .SH "SYNOPSIS"
136 .IX Header "SYNOPSIS"
137 .Vb 1
138 \& # create a file grab_test in $HOME:
139 .Ve
140 .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 \& # start a @@RXVT_NAME@@ using it:
150 .Ve
151 .PP
152 .Vb 1
153 \& @@RXVT_NAME@@ --perl-lib $HOME -pe grab_test
154 .Ve
155 .SH "DESCRIPTION"
156 .IX Header "DESCRIPTION"
157 Everytime a terminal object gets created, scripts specified via the
158 \&\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 .PP
163 Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where
164 scripts will be shared (But not enabled) for all terminals.
165 .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 .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 .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 .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 $string"
279 Calls \f(CW\*(C`rxvt_warn\*(C'\fR with the given string which should not include a
280 newline. The module also overwrites the \f(CW\*(C`warn\*(C'\fR builtin with a function
281 that calls this function.
282 .Sp
283 Using this function has the advantage that its output ends up in the
284 correct place, e.g. on stderr of the connecting urxvtc client.
285 .IP "$time = urxvt::NOW" 4
286 .IX Item "$time = urxvt::NOW"
287 Returns the \*(L"current time\*(R" (as per the event loop).
288 .ie n .Sh "The ""urxvt::term"" Class"
289 .el .Sh "The \f(CWurxvt::term\fP Class"
290 .IX Subsection "The urxvt::term Class"
291 .ie n .IP "$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[, $newval])"
294 Returns the current resource value associated with a given name and
295 optionally sets a new value. Setting values is most useful in the \f(CW\*(C`init\*(C'\fR
296 hook. Unset resources are returned and accepted as \f(CW\*(C`undef\*(C'\fR.
297 .Sp
298 The new value must be properly encoded to a suitable character encoding
299 before passing it to this method. Similarly, the returned value may need
300 to be converted from the used encoding to text.
301 .Sp
302 Resource names are as defined in \fIsrc/rsinc.h\fR. Colours can be specified
303 as resource names of the form \f(CW\*(C`color+<index>\*(C'\fR, e.g. \f(CW\*(C`color+5\*(C'\fR. (will
304 likely change).
305 .Sp
306 Please note that resource strings will currently only be freed when the
307 terminal is destroyed, so changing options frequently will eat memory.
308 .Sp
309 Here is a a likely non-exhaustive list of resource names, not all of which
310 are supported in every build, please see the source to see the actual
311 list:
312 .Sp
313 .Vb 12
314 \& answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
315 \& borderLess color cursorBlink cursorUnderline cutchars delete_key
316 \& display_name embed ext_bwidth fade font geometry hold iconName
317 \& imFont imLocale inputMethod insecure int_bwidth intensityStyles
318 \& italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
319 \& mouseWheelScrollPage name pastableTabs path perl_eval perl_ext
320 \& perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
321 \& reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
322 \& scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
323 \& scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
324 \& shade term_name title transparent transparent_all tripleclickwords
325 \& utmpInhibit visualBell
326 .Ve
327 .ie n .IP "($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, $text)"
371 Write a string at the given position into the overlay.
372 .ie n .IP "$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 .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 .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 .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