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Committed: Mon Jan 2 15:59:25 2006 UTC (18 years, 6 months ago) by root
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# 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 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 * Each script will only be loaded once, even in urxvtd, and will be valid
140 globally.
141 .PP
142 * Scripts are evaluated in a 'use strict' and 'use utf8' environment, and
143 thus must be encoded as \s-1UTF\-8\s0.
144 .PP
145 .Vb 4
146 \& sub on_sel_grab {
147 \& warn "you selected ", $_[0]->selection;
148 \& ()
149 \& }
150 .Ve
151 .PP
152 .Vb 1
153 \& 1
154 .Ve
155 .SH "DESCRIPTION"
156 .IX Header "DESCRIPTION"
157 .Sh "Hooks"
158 .IX Subsection "Hooks"
159 The following subroutines can be declared in loaded scripts, and will be called
160 whenever the relevant event happens.
161 .PP
162 All of them must return a boolean value. If it is true, then the event
163 counts as being \fIconsumed\fR, and the invocation of other hooks is skipped,
164 and the relevant action might not be carried out by the \*(C+ code.
165 .PP
166 When in doubt, return a false value (preferably \f(CW\*(C`()\*(C'\fR).
167 .ie n .IP "on_init $term" 4
168 .el .IP "on_init \f(CW$term\fR" 4
169 .IX Item "on_init $term"
170 Called after a new terminal object has been initialized, but before
171 windows are created or the command gets run.
172 .ie n .IP "on_reset $term" 4
173 .el .IP "on_reset \f(CW$term\fR" 4
174 .IX Item "on_reset $term"
175 Called after the screen is \*(L"reset\*(R" for any reason, such as resizing or
176 control sequences. Here is where you can react on changes to size-related
177 variables.
178 .ie n .IP "on_start $term" 4
179 .el .IP "on_start \f(CW$term\fR" 4
180 .IX Item "on_start $term"
181 Called at the very end of initialisation of a new terminal, just before
182 returning to the mainloop.
183 .ie n .IP "on_sel_make $term\fR, \f(CW$eventtime" 4
184 .el .IP "on_sel_make \f(CW$term\fR, \f(CW$eventtime\fR" 4
185 .IX Item "on_sel_make $term, $eventtime"
186 Called whenever a selection has been made by the user, but before the
187 selection text is copied, so changes to the beginning, end or type of the
188 selection will be honored.
189 .Sp
190 Returning a true value aborts selection making by urxvt, in which case you
191 have to make a selection yourself by calling \f(CW\*(C`$term\->selection_grab\*(C'\fR.
192 .ie n .IP "on_sel_grab $term\fR, \f(CW$eventtime" 4
193 .el .IP "on_sel_grab \f(CW$term\fR, \f(CW$eventtime\fR" 4
194 .IX Item "on_sel_grab $term, $eventtime"
195 Called whenever a selection has been copied, but before the selection is
196 requested from the server. The selection text can be queried and changed
197 by calling \f(CW\*(C`$term\->selection\*(C'\fR.
198 .Sp
199 Returning a true value aborts selection grabbing. It will still be hilighted.
200 .ie n .IP "on_focus_in $term" 4
201 .el .IP "on_focus_in \f(CW$term\fR" 4
202 .IX Item "on_focus_in $term"
203 Called whenever the window gets the keyboard focus, before urxvt does
204 focus in processing.
205 .ie n .IP "on_focus_out $term" 4
206 .el .IP "on_focus_out \f(CW$term\fR" 4
207 .IX Item "on_focus_out $term"
208 Called wheneever the window loses keyboard focus, before urxvt does focus
209 out processing.
210 .ie n .IP "on_view_change $term\fR, \f(CW$offset" 4
211 .el .IP "on_view_change \f(CW$term\fR, \f(CW$offset\fR" 4
212 .IX Item "on_view_change $term, $offset"
213 Called whenever the view offset changes, i..e the user or program
214 scrolls. Offset \f(CW0\fR means display the normal terminal, positive values
215 show this many lines of scrollback.
216 .ie n .IP "on_scroll_back $term\fR, \f(CW$lines\fR, \f(CW$saved" 4
217 .el .IP "on_scroll_back \f(CW$term\fR, \f(CW$lines\fR, \f(CW$saved\fR" 4
218 .IX Item "on_scroll_back $term, $lines, $saved"
219 Called whenever lines scroll out of the terminal area into the scrollback
220 buffer. \f(CW$lines\fR is the number of lines scrolled out and may be larger
221 than the scroll back buffer or the terminal.
222 .Sp
223 It is called before lines are scrolled out (so rows 0 .. min ($lines \- 1,
224 \&\f(CW$nrow\fR \- 1) represent the lines to be scrolled out). \f(CW$saved\fR is the total
225 number of lines that will be in the scrollback buffer.
226 .ie n .IP "on_tty_activity $term *NYI*" 4
227 .el .IP "on_tty_activity \f(CW$term\fR *NYI*" 4
228 .IX Item "on_tty_activity $term *NYI*"
229 Called whenever the program(s) running in the urxvt window send output.
230 .ie n .IP "on_refresh_begin $term" 4
231 .el .IP "on_refresh_begin \f(CW$term\fR" 4
232 .IX Item "on_refresh_begin $term"
233 Called just before the screen gets redrawn. Can be used for overlay
234 or similar effects by modify terminal contents in refresh_begin, and
235 restoring them in refresh_end. The built-in overlay and selection display
236 code is run after this hook, and takes precedence.
237 .ie n .IP "on_refresh_end $term" 4
238 .el .IP "on_refresh_end \f(CW$term\fR" 4
239 .IX Item "on_refresh_end $term"
240 Called just after the screen gets redrawn. See \f(CW\*(C`on_refresh_begin\*(C'\fR.
241 .ie n .Sh "Functions in the ""urxvt"" Package"
242 .el .Sh "Functions in the \f(CWurxvt\fP Package"
243 .IX Subsection "Functions in the urxvt Package"
244 .ie n .IP "urxvt::fatal $errormessage" 4
245 .el .IP "urxvt::fatal \f(CW$errormessage\fR" 4
246 .IX Item "urxvt::fatal $errormessage"
247 Fatally aborts execution with the given error message. Avoid at all
248 costs! The only time this is acceptable is when the terminal process
249 starts up.
250 .ie n .IP "urxvt::warn $string" 4
251 .el .IP "urxvt::warn \f(CW$string\fR" 4
252 .IX Item "urxvt::warn $string"
253 Calls \f(CW\*(C`rxvt_warn\*(C'\fR witht eh given string which should not include a
254 newline. The module also overwrites the \f(CW\*(C`warn\*(C'\fR builtin with a function
255 that calls this function.
256 .Sp
257 Using this function has the advantage that its output ends up in the
258 correct place, e.g. on stderr of the connecting urxvtc client.
259 .ie n .IP "$cellwidth = urxvt::wcswidth $string" 4
260 .el .IP "$cellwidth = urxvt::wcswidth \f(CW$string\fR" 4
261 .IX Item "$cellwidth = urxvt::wcswidth $string"
262 Returns the number of screen-cells this string would need. Correctly
263 accounts for wide and combining characters.
264 .IP "$time = urxvt::NOW" 4
265 .IX Item "$time = urxvt::NOW"
266 Returns the \*(L"current time\*(R" (as per the event loop).
267 .ie n .Sh "The ""urxvt::term"" Class"
268 .el .Sh "The \f(CWurxvt::term\fP Class"
269 .IX Subsection "The urxvt::term Class"
270 .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_mark ([$row, \f(CW$col])" 4
271 .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_mark ([$row, \f(CW$col\fR])" 4
272 .IX Item "($row, $col) = $term->selection_mark ([$row, $col])"
273 .PD 0
274 .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_beg ([$row, \f(CW$col])" 4
275 .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_beg ([$row, \f(CW$col\fR])" 4
276 .IX Item "($row, $col) = $term->selection_beg ([$row, $col])"
277 .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_end ([$row, \f(CW$col])" 4
278 .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_end ([$row, \f(CW$col\fR])" 4
279 .IX Item "($row, $col) = $term->selection_end ([$row, $col])"
280 .PD
281 Return the current values of the selection mark, begin or end positions,
282 and optionally set them to new values.
283 .ie n .IP "$success = $term\->selection_grab ($eventtime)" 4
284 .el .IP "$success = \f(CW$term\fR\->selection_grab ($eventtime)" 4
285 .IX Item "$success = $term->selection_grab ($eventtime)"
286 Try to request the primary selection from the server (for example, as set
287 by the next method).
288 .ie n .IP "$oldtext = $term\->selection ([$newtext])" 4
289 .el .IP "$oldtext = \f(CW$term\fR\->selection ([$newtext])" 4
290 .IX Item "$oldtext = $term->selection ([$newtext])"
291 Return the current selection text and optionally replace it by \f(CW$newtext\fR.
292 .ie n .IP "$term\->scr_overlay ($x, $y\fR, \f(CW$text)" 4
293 .el .IP "$term\->scr_overlay ($x, \f(CW$y\fR, \f(CW$text\fR)" 4
294 .IX Item "$term->scr_overlay ($x, $y, $text)"
295 Create a simple multi-line overlay box. See the next method for details.
296 .ie n .IP "$term\->scr_overlay_new ($x, $y\fR, \f(CW$width\fR, \f(CW$height)" 4
297 .el .IP "$term\->scr_overlay_new ($x, \f(CW$y\fR, \f(CW$width\fR, \f(CW$height\fR)" 4
298 .IX Item "$term->scr_overlay_new ($x, $y, $width, $height)"
299 Create a new (empty) overlay at the given position with the given
300 width/height. A border will be put around the box. If either \f(CW$x\fR or
301 \&\f(CW$y\fR is negative, then this is counted from the right/bottom side,
302 respectively.
303 .IP "$term\->scr_overlay_off" 4
304 .IX Item "$term->scr_overlay_off"
305 Switch the overlay off again.
306 .ie n .IP "$term\->scr_overlay_set_char ($x, $y\fR, \f(CW$char\fR, \f(CW$rend = \s-1OVERLAY_RSTYLE\s0)" 4
307 .el .IP "$term\->scr_overlay_set_char ($x, \f(CW$y\fR, \f(CW$char\fR, \f(CW$rend\fR = \s-1OVERLAY_RSTYLE\s0)" 4
308 .IX Item "$term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE)"
309 Put a single character (specified numerically) at the given overlay
310 position.
311 .ie n .IP "$term\->scr_overlay_set ($x, $y\fR, \f(CW$text)" 4
312 .el .IP "$term\->scr_overlay_set ($x, \f(CW$y\fR, \f(CW$text\fR)" 4
313 .IX Item "$term->scr_overlay_set ($x, $y, $text)"
314 Write a string at the given position into the overlay.
315 .ie n .Sh "The ""urxvt::timer"" Class"
316 .el .Sh "The \f(CWurxvt::timer\fP Class"
317 .IX Subsection "The urxvt::timer Class"
318 This class implements timer watchers/events. Time is represented as a
319 fractional number of seconds since the epoch. Example:
320 .PP
321 .Vb 11
322 \& # create a digital clock display in upper right corner
323 \& $term->{timer} = urxvt::timer
324 \& ->new
325 \& ->start (urxvt::NOW)
326 \& ->cb (sub {
327 \& my ($timer) = @_;
328 \& my $time = $timer->at;
329 \& $timer->start ($time + 1);
330 \& $self->scr_overlay (-1, 0,
331 \& POSIX::strftime "%H:%M:%S", localtime $time);
332 \& });
333 .Ve
334 .IP "$timer = new urxvt::timer" 4
335 .IX Item "$timer = new urxvt::timer"
336 Create a new timer object in stopped state.
337 .ie n .IP "$timer = $timer\fR\->cb (sub { my ($timer) = \f(CW@_; ... })" 4
338 .el .IP "$timer = \f(CW$timer\fR\->cb (sub { my ($timer) = \f(CW@_\fR; ... })" 4
339 .IX Item "$timer = $timer->cb (sub { my ($timer) = @_; ... })"
340 Set the callback to be called when the timer triggers.
341 .ie n .IP "$tstamp = $timer\->at" 4
342 .el .IP "$tstamp = \f(CW$timer\fR\->at" 4
343 .IX Item "$tstamp = $timer->at"
344 Return the time this watcher will fire next.
345 .ie n .IP "$timer = $timer\->set ($tstamp)" 4
346 .el .IP "$timer = \f(CW$timer\fR\->set ($tstamp)" 4
347 .IX Item "$timer = $timer->set ($tstamp)"
348 Set the time the event is generated to \f(CW$tstamp\fR.
349 .ie n .IP "$timer = $timer\->start" 4
350 .el .IP "$timer = \f(CW$timer\fR\->start" 4
351 .IX Item "$timer = $timer->start"
352 Start the timer.
353 .ie n .IP "$timer = $timer\->start ($tstamp)" 4
354 .el .IP "$timer = \f(CW$timer\fR\->start ($tstamp)" 4
355 .IX Item "$timer = $timer->start ($tstamp)"
356 Set the event trigger time to \f(CW$tstamp\fR and start the timer.
357 .ie n .IP "$timer = $timer\->stop" 4
358 .el .IP "$timer = \f(CW$timer\fR\->stop" 4
359 .IX Item "$timer = $timer->stop"
360 Stop the timer.
361 .ie n .Sh "The ""urxvt::iow"" Class"
362 .el .Sh "The \f(CWurxvt::iow\fP Class"
363 .IX Subsection "The urxvt::iow Class"
364 This class implements io watchers/events. Example:
365 .PP
366 .Vb 12
367 \& $term->{socket} = ...
368 \& $term->{iow} = urxvt::iow
369 \& ->new
370 \& ->fd (fileno $term->{socket})
371 \& ->events (1) # wait for read data
372 \& ->start
373 \& ->cb (sub {
374 \& my ($iow, $revents) = @_;
375 \& # $revents must be 1 here, no need to check
376 \& sysread $term->{socket}, my $buf, 8192
377 \& or end-of-file;
378 \& });
379 .Ve
380 .IP "$iow = new urxvt::iow" 4
381 .IX Item "$iow = new urxvt::iow"
382 Create a new io watcher object in stopped state.
383 .ie n .IP "$iow = $iow\fR\->cb (sub { my ($iow, \f(CW$reventmask\fR) = \f(CW@_; ... })" 4
384 .el .IP "$iow = \f(CW$iow\fR\->cb (sub { my ($iow, \f(CW$reventmask\fR) = \f(CW@_\fR; ... })" 4
385 .IX Item "$iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... })"
386 Set the callback to be called when io events are triggered. \f(CW$reventmask\fR
387 is a bitset as described in the \f(CW\*(C`events\*(C'\fR method.
388 .ie n .IP "$iow = $iow\->fd ($fd)" 4
389 .el .IP "$iow = \f(CW$iow\fR\->fd ($fd)" 4
390 .IX Item "$iow = $iow->fd ($fd)"
391 Set the filedescriptor (not handle) to watch.
392 .ie n .IP "$iow = $iow\->events ($eventmask)" 4
393 .el .IP "$iow = \f(CW$iow\fR\->events ($eventmask)" 4
394 .IX Item "$iow = $iow->events ($eventmask)"
395 Set the event mask to watch. Bit #0 (value \f(CW1\fR) enables watching for read
396 data, Bit #1 (value \f(CW2\fR) enables watching for write data.
397 .ie n .IP "$iow = $iow\->start" 4
398 .el .IP "$iow = \f(CW$iow\fR\->start" 4
399 .IX Item "$iow = $iow->start"
400 Start watching for requested events on the given handle.
401 .ie n .IP "$iow = $iow\->stop" 4
402 .el .IP "$iow = \f(CW$iow\fR\->stop" 4
403 .IX Item "$iow = $iow->stop"
404 Stop watching for events on the given filehandle.
405 .SH "AUTHOR"
406 .IX Header "AUTHOR"
407 .Vb 2
408 \& Marc Lehmann <pcg@goof.com>
409 \& http://software.schmorp.de/pkg/rxvt-unicode
410 .Ve