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Revision: 1.10
Committed: Tue Jan 3 23:41:37 2006 UTC (18 years, 6 months ago) by root
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# Content
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129 .\" ========================================================================
130 .\"
131 .IX Title "rxvt 3"
132 .TH rxvt 3 "2006-01-04" "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 "Prepackaged Extensions"
166 .IX Subsection "Prepackaged Extensions"
167 This section describes the extensiosn delivered with this version. You can
168 find them in \fI@@RXVT_LIBDIR@@/urxvt/perl/\fR.
169 .PP
170 You can activate them like this:
171 .PP
172 .Vb 1
173 \& @@RXVT_NAME@@ -pe <extensionname>
174 .Ve
175 .IP "selection" 4
176 .IX Item "selection"
177 Intelligent selection. This extension tries to be more intelligent when
178 the user extends selections (double\-click). Right now, it tries to select
179 urls and complete shell-quoted arguments, which is very convenient, too,
180 if your \fIls\fR supports \f(CW\*(C`\-\-quoting\-style=shell\*(C'\fR.
181 .Sp
182 It also offers the following bindable event:
183 .RS 4
184 .IP "rot13" 4
185 .IX Item "rot13"
186 Rot\-13 the selection when activated. Used via keyboard trigger:
187 .Sp
188 .Vb 1
189 \& URxvt.keysym.C-M-r: perl:selection:rot13
190 .Ve
191 .RE
192 .RS 4
193 .RE
194 .IP "digital-clock" 4
195 .IX Item "digital-clock"
196 Displays a digital clock using the built-in overlay.
197 .IP "example-refresh-hooks" 4
198 .IX Item "example-refresh-hooks"
199 Displays a very simple digital clock in the upper right corner of the
200 window. Illustrates overwriting the refresh callbacks to create your own
201 overlays or changes.
202 .Sh "General \s-1API\s0 Considerations"
203 .IX Subsection "General API Considerations"
204 All objects (such as terminals, time watchers etc.) are typical
205 reference-to-hash objects. The hash can be used to store anything you
206 like. All members starting with an underscore (such as \f(CW\*(C`_ptr\*(C'\fR or
207 \&\f(CW\*(C`_hook\*(C'\fR) are reserved for internal uses and \fB\s-1MUST\s0 \s-1NOT\s0\fR be accessed or
208 modified).
209 .PP
210 When objects are destroyed on the \*(C+ side, the perl object hashes are
211 emptied, so its best to store related objects such as time watchers and
212 the like inside the terminal object so they get destroyed as soon as the
213 terminal is destroyed.
214 .Sh "Hooks"
215 .IX Subsection "Hooks"
216 The following subroutines can be declared in loaded scripts, and will be
217 called whenever the relevant event happens.
218 .PP
219 The first argument passed to them is an object private to each terminal
220 and extension package. You can call all \f(CW\*(C`urxvt::term\*(C'\fR methods on it, but
221 its not a real \f(CW\*(C`urxvt::term\*(C'\fR object. Instead, the real \f(CW\*(C`urxvt::term\*(C'\fR
222 object that is shared between all packages is stored in the \f(CW\*(C`term\*(C'\fR
223 member.
224 .PP
225 All of them must return a boolean value. If it is true, then the event
226 counts as being \fIconsumed\fR, and the invocation of other hooks is skipped,
227 and the relevant action might not be carried out by the \*(C+ code.
228 .PP
229 When in doubt, return a false value (preferably \f(CW\*(C`()\*(C'\fR).
230 .ie n .IP "on_init $term" 4
231 .el .IP "on_init \f(CW$term\fR" 4
232 .IX Item "on_init $term"
233 Called after a new terminal object has been initialized, but before
234 windows are created or the command gets run.
235 .ie n .IP "on_reset $term" 4
236 .el .IP "on_reset \f(CW$term\fR" 4
237 .IX Item "on_reset $term"
238 Called after the screen is \*(L"reset\*(R" for any reason, such as resizing or
239 control sequences. Here is where you can react on changes to size-related
240 variables.
241 .ie n .IP "on_start $term" 4
242 .el .IP "on_start \f(CW$term\fR" 4
243 .IX Item "on_start $term"
244 Called at the very end of initialisation of a new terminal, just before
245 returning to the mainloop.
246 .ie n .IP "on_sel_make $term\fR, \f(CW$eventtime" 4
247 .el .IP "on_sel_make \f(CW$term\fR, \f(CW$eventtime\fR" 4
248 .IX Item "on_sel_make $term, $eventtime"
249 Called whenever a selection has been made by the user, but before the
250 selection text is copied, so changes to the beginning, end or type of the
251 selection will be honored.
252 .Sp
253 Returning a true value aborts selection making by urxvt, in which case you
254 have to make a selection yourself by calling \f(CW\*(C`$term\->selection_grab\*(C'\fR.
255 .ie n .IP "on_sel_grab $term\fR, \f(CW$eventtime" 4
256 .el .IP "on_sel_grab \f(CW$term\fR, \f(CW$eventtime\fR" 4
257 .IX Item "on_sel_grab $term, $eventtime"
258 Called whenever a selection has been copied, but before the selection is
259 requested from the server. The selection text can be queried and changed
260 by calling \f(CW\*(C`$term\->selection\*(C'\fR.
261 .Sp
262 Returning a true value aborts selection grabbing. It will still be hilighted.
263 .ie n .IP "on_sel_extend $term" 4
264 .el .IP "on_sel_extend \f(CW$term\fR" 4
265 .IX Item "on_sel_extend $term"
266 Called whenever the user tries to extend the selection (e.g. with a double
267 click) and is either supposed to return false (normal operation), or
268 should extend the selection itelf and return true to suppress the built-in
269 processing.
270 .Sp
271 See the \fIselection\fR example extension.
272 .ie n .IP "on_focus_in $term" 4
273 .el .IP "on_focus_in \f(CW$term\fR" 4
274 .IX Item "on_focus_in $term"
275 Called whenever the window gets the keyboard focus, before urxvt does
276 focus in processing.
277 .ie n .IP "on_focus_out $term" 4
278 .el .IP "on_focus_out \f(CW$term\fR" 4
279 .IX Item "on_focus_out $term"
280 Called wheneever the window loses keyboard focus, before urxvt does focus
281 out processing.
282 .ie n .IP "on_view_change $term\fR, \f(CW$offset" 4
283 .el .IP "on_view_change \f(CW$term\fR, \f(CW$offset\fR" 4
284 .IX Item "on_view_change $term, $offset"
285 Called whenever the view offset changes, i..e the user or program
286 scrolls. Offset \f(CW0\fR means display the normal terminal, positive values
287 show this many lines of scrollback.
288 .ie n .IP "on_scroll_back $term\fR, \f(CW$lines\fR, \f(CW$saved" 4
289 .el .IP "on_scroll_back \f(CW$term\fR, \f(CW$lines\fR, \f(CW$saved\fR" 4
290 .IX Item "on_scroll_back $term, $lines, $saved"
291 Called whenever lines scroll out of the terminal area into the scrollback
292 buffer. \f(CW$lines\fR is the number of lines scrolled out and may be larger
293 than the scroll back buffer or the terminal.
294 .Sp
295 It is called before lines are scrolled out (so rows 0 .. min ($lines \- 1,
296 \&\f(CW$nrow\fR \- 1) represent the lines to be scrolled out). \f(CW$saved\fR is the total
297 number of lines that will be in the scrollback buffer.
298 .ie n .IP "on_tty_activity $term *NYI*" 4
299 .el .IP "on_tty_activity \f(CW$term\fR *NYI*" 4
300 .IX Item "on_tty_activity $term *NYI*"
301 Called whenever the program(s) running in the urxvt window send output.
302 .ie n .IP "on_refresh_begin $term" 4
303 .el .IP "on_refresh_begin \f(CW$term\fR" 4
304 .IX Item "on_refresh_begin $term"
305 Called just before the screen gets redrawn. Can be used for overlay
306 or similar effects by modify terminal contents in refresh_begin, and
307 restoring them in refresh_end. The built-in overlay and selection display
308 code is run after this hook, and takes precedence.
309 .ie n .IP "on_refresh_end $term" 4
310 .el .IP "on_refresh_end \f(CW$term\fR" 4
311 .IX Item "on_refresh_end $term"
312 Called just after the screen gets redrawn. See \f(CW\*(C`on_refresh_begin\*(C'\fR.
313 .ie n .IP "on_keyboard_command $term\fR, \f(CW$string" 4
314 .el .IP "on_keyboard_command \f(CW$term\fR, \f(CW$string\fR" 4
315 .IX Item "on_keyboard_command $term, $string"
316 Called whenever the user presses a key combination that has a
317 \&\f(CW\*(C`perl:string\*(C'\fR action bound to it (see description of the \fBkeysym\fR
318 resource in the @@RXVT_NAME@@(1) manpage).
319 .ie n .Sh "Variables in the ""urxvt"" Package"
320 .el .Sh "Variables in the \f(CWurxvt\fP Package"
321 .IX Subsection "Variables in the urxvt Package"
322 .IP "$urxvt::TERM" 4
323 .IX Item "$urxvt::TERM"
324 The current terminal. Whenever a callback/Hook is bein executed, this
325 variable stores the current \f(CW\*(C`urxvt::term\*(C'\fR object.
326 .ie n .Sh "Functions in the ""urxvt"" Package"
327 .el .Sh "Functions in the \f(CWurxvt\fP Package"
328 .IX Subsection "Functions in the urxvt Package"
329 .ie n .IP "urxvt::fatal $errormessage" 4
330 .el .IP "urxvt::fatal \f(CW$errormessage\fR" 4
331 .IX Item "urxvt::fatal $errormessage"
332 Fatally aborts execution with the given error message. Avoid at all
333 costs! The only time this is acceptable is when the terminal process
334 starts up.
335 .ie n .IP "urxvt::warn $string" 4
336 .el .IP "urxvt::warn \f(CW$string\fR" 4
337 .IX Item "urxvt::warn $string"
338 Calls \f(CW\*(C`rxvt_warn\*(C'\fR with the given string which should not include a
339 newline. The module also overwrites the \f(CW\*(C`warn\*(C'\fR builtin with a function
340 that calls this function.
341 .Sp
342 Using this function has the advantage that its output ends up in the
343 correct place, e.g. on stderr of the connecting urxvtc client.
344 .IP "$time = urxvt::NOW" 4
345 .IX Item "$time = urxvt::NOW"
346 Returns the \*(L"current time\*(R" (as per the event loop).
347 .Sh "\s-1RENDITION\s0"
348 .IX Subsection "RENDITION"
349 Rendition bitsets contain information about colour, font, font styles and
350 similar information for each screen cell.
351 .PP
352 The following \*(L"macros\*(R" deal with changes in rendition sets. You should
353 never just create a bitset, you should always modify an existing one,
354 as they contain important information required for correct operation of
355 rxvt\-unicode.
356 .IP "$rend = urxvt::DEFAULT_RSTYLE" 4
357 .IX Item "$rend = urxvt::DEFAULT_RSTYLE"
358 Returns the default rendition, as used when the terminal is starting up or
359 being reset. Useful as a base to start when creating renditions.
360 .IP "$rend = urxvt::OVERLAY_RSTYLE" 4
361 .IX Item "$rend = urxvt::OVERLAY_RSTYLE"
362 Return the rendition mask used for overlays by default.
363 .IP "$rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline" 4
364 .IX Item "$rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline"
365 Return the bit that enabled bold, italic, blink, reverse-video and
366 underline, respectively. To enable such a style, just logically \s-1OR\s0 it into
367 the bitset.
368 .ie n .IP "$foreground = urxvt::GET_BASEFG $rend" 4
369 .el .IP "$foreground = urxvt::GET_BASEFG \f(CW$rend\fR" 4
370 .IX Item "$foreground = urxvt::GET_BASEFG $rend"
371 .PD 0
372 .ie n .IP "$background = urxvt::GET_BASEBG $rend" 4
373 .el .IP "$background = urxvt::GET_BASEBG \f(CW$rend\fR" 4
374 .IX Item "$background = urxvt::GET_BASEBG $rend"
375 .PD
376 Return the foreground/background colour index, respectively.
377 .ie n .IP "$rend = urxvt::SET_FGCOLOR ($rend, $new_colour)" 4
378 .el .IP "$rend = urxvt::SET_FGCOLOR ($rend, \f(CW$new_colour\fR)" 4
379 .IX Item "$rend = urxvt::SET_FGCOLOR ($rend, $new_colour)"
380 .PD 0
381 .ie n .IP "$rend = urxvt::SET_BGCOLOR ($rend, $new_colour)" 4
382 .el .IP "$rend = urxvt::SET_BGCOLOR ($rend, \f(CW$new_colour\fR)" 4
383 .IX Item "$rend = urxvt::SET_BGCOLOR ($rend, $new_colour)"
384 .PD
385 Replace the foreground/background colour in the rendition mask with the
386 specified one.
387 .IP "$value = urxvt::GET_CUSTOM ($rend)" 4
388 .IX Item "$value = urxvt::GET_CUSTOM ($rend)"
389 Return the \*(L"custom\*(R" value: Every rendition has 5 bits for use by
390 extensions. They can be set and changed as you like and are initially
391 zero.
392 .ie n .IP "$rend = urxvt::SET_CUSTOM ($rend, $new_value)" 4
393 .el .IP "$rend = urxvt::SET_CUSTOM ($rend, \f(CW$new_value\fR)" 4
394 .IX Item "$rend = urxvt::SET_CUSTOM ($rend, $new_value)"
395 Change the custom value.
396 .ie n .Sh "The ""urxvt::term"" Class"
397 .el .Sh "The \f(CWurxvt::term\fP Class"
398 .IX Subsection "The urxvt::term Class"
399 .ie n .IP "$value = $term\fR\->resource ($name[, \f(CW$newval])" 4
400 .el .IP "$value = \f(CW$term\fR\->resource ($name[, \f(CW$newval\fR])" 4
401 .IX Item "$value = $term->resource ($name[, $newval])"
402 Returns the current resource value associated with a given name and
403 optionally sets a new value. Setting values is most useful in the \f(CW\*(C`init\*(C'\fR
404 hook. Unset resources are returned and accepted as \f(CW\*(C`undef\*(C'\fR.
405 .Sp
406 The new value must be properly encoded to a suitable character encoding
407 before passing it to this method. Similarly, the returned value may need
408 to be converted from the used encoding to text.
409 .Sp
410 Resource names are as defined in \fIsrc/rsinc.h\fR. Colours can be specified
411 as resource names of the form \f(CW\*(C`color+<index>\*(C'\fR, e.g. \f(CW\*(C`color+5\*(C'\fR. (will
412 likely change).
413 .Sp
414 Please note that resource strings will currently only be freed when the
415 terminal is destroyed, so changing options frequently will eat memory.
416 .Sp
417 Here is a a likely non-exhaustive list of resource names, not all of which
418 are supported in every build, please see the source to see the actual
419 list:
420 .Sp
421 .Vb 12
422 \& answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
423 \& borderLess color cursorBlink cursorUnderline cutchars delete_key
424 \& display_name embed ext_bwidth fade font geometry hold iconName
425 \& imFont imLocale inputMethod insecure int_bwidth intensityStyles
426 \& italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
427 \& mouseWheelScrollPage name pastableTabs path perl_eval perl_ext
428 \& perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
429 \& reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
430 \& scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
431 \& scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
432 \& shade term_name title transparent transparent_all tripleclickwords
433 \& utmpInhibit visualBell
434 .Ve
435 .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_mark ([$row, \f(CW$col])" 4
436 .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_mark ([$row, \f(CW$col\fR])" 4
437 .IX Item "($row, $col) = $term->selection_mark ([$row, $col])"
438 .PD 0
439 .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_beg ([$row, \f(CW$col])" 4
440 .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_beg ([$row, \f(CW$col\fR])" 4
441 .IX Item "($row, $col) = $term->selection_beg ([$row, $col])"
442 .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_end ([$row, \f(CW$col])" 4
443 .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_end ([$row, \f(CW$col\fR])" 4
444 .IX Item "($row, $col) = $term->selection_end ([$row, $col])"
445 .PD
446 Return the current values of the selection mark, begin or end positions,
447 and optionally set them to new values.
448 .ie n .IP "$success = $term\->selection_grab ($eventtime)" 4
449 .el .IP "$success = \f(CW$term\fR\->selection_grab ($eventtime)" 4
450 .IX Item "$success = $term->selection_grab ($eventtime)"
451 Try to request the primary selection from the server (for example, as set
452 by the next method).
453 .ie n .IP "$oldtext = $term\->selection ([$newtext])" 4
454 .el .IP "$oldtext = \f(CW$term\fR\->selection ([$newtext])" 4
455 .IX Item "$oldtext = $term->selection ([$newtext])"
456 Return the current selection text and optionally replace it by \f(CW$newtext\fR.
457 .Sp
458 #=item \f(CW$term\fR\->overlay ($x, \f(CW$y\fR, \f(CW$text\fR)
459 #
460 #Create a simple multi-line overlay box. See the next method for details.
461 #
462 #=cut
463 .Sp
464 sub urxvt::term::scr_overlay {
465 die;
466 my ($self, \f(CW$x\fR, \f(CW$y\fR, \f(CW$text\fR) = \f(CW@_\fR;
467 .Sp
468 .Vb 1
469 \& my @lines = split /\en/, $text;
470 .Ve
471 .Sp
472 .Vb 4
473 \& my $w = 0;
474 \& for (map $self->strwidth ($_), @lines) {
475 \& $w = $_ if $w < $_;
476 \& }
477 .Ve
478 .Sp
479 .Vb 3
480 \& $self->scr_overlay_new ($x, $y, $w, scalar @lines);
481 \& $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines;
482 \&}
483 .Ve
484 .ie n .IP "$term\->overlay ($x, $y\fR, \f(CW$width\fR, \f(CW$height\fR[, \f(CW$rstyle\fR[, \f(CW$border]])" 4
485 .el .IP "$term\->overlay ($x, \f(CW$y\fR, \f(CW$width\fR, \f(CW$height\fR[, \f(CW$rstyle\fR[, \f(CW$border\fR]])" 4
486 .IX Item "$term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])"
487 Create a new (empty) overlay at the given position with the given
488 width/height. \f(CW$rstyle\fR defines the initial rendition style
489 (default: \f(CW\*(C`OVERLAY_RSTYLE\*(C'\fR).
490 .Sp
491 If \f(CW$border\fR is \f(CW2\fR (default), then a decorative border will be put
492 around the box.
493 .Sp
494 If either \f(CW$x\fR or \f(CW$y\fR is negative, then this is counted from the
495 right/bottom side, respectively.
496 .Sp
497 This method returns an urxvt::overlay object. The overlay will be visible
498 as long as the perl object is referenced.
499 .Sp
500 The methods currently supported on \f(CW\*(C`urxvt::overlay\*(C'\fR objects are:
501 .RS 4
502 .ie n .IP "$overlay\->set ($x, $y\fR, \f(CW$text\fR, \f(CW$rend)" 4
503 .el .IP "$overlay\->set ($x, \f(CW$y\fR, \f(CW$text\fR, \f(CW$rend\fR)" 4
504 .IX Item "$overlay->set ($x, $y, $text, $rend)"
505 Similar to \f(CW\*(C`$term\->ROW_t\*(C'\fR and \f(CW\*(C`$term\->ROW_r\*(C'\fR in that it puts
506 text in rxvt\-unicode's special encoding and an array of rendition values
507 at a specific position inside the overlay.
508 .IP "$overlay\->hide" 4
509 .IX Item "$overlay->hide"
510 If visible, hide the overlay, but do not destroy it.
511 .IP "$overlay\->show" 4
512 .IX Item "$overlay->show"
513 If hidden, display the overlay again.
514 .RE
515 .RS 4
516 .RE
517 .ie n .IP "$cellwidth = $term\fR\->strwidth \f(CW$string" 4
518 .el .IP "$cellwidth = \f(CW$term\fR\->strwidth \f(CW$string\fR" 4
519 .IX Item "$cellwidth = $term->strwidth $string"
520 Returns the number of screen-cells this string would need. Correctly
521 accounts for wide and combining characters.
522 .ie n .IP "$octets = $term\fR\->locale_encode \f(CW$string" 4
523 .el .IP "$octets = \f(CW$term\fR\->locale_encode \f(CW$string\fR" 4
524 .IX Item "$octets = $term->locale_encode $string"
525 Convert the given text string into the corresponding locale encoding.
526 .ie n .IP "$string = $term\fR\->locale_decode \f(CW$octets" 4
527 .el .IP "$string = \f(CW$term\fR\->locale_decode \f(CW$octets\fR" 4
528 .IX Item "$string = $term->locale_decode $octets"
529 Convert the given locale-encoded octets into a perl string.
530 .IP "$term\->tt_write ($octets)" 4
531 .IX Item "$term->tt_write ($octets)"
532 Write the octets given in \f(CW$data\fR to the tty (i.e. as program input). To
533 pass characters instead of octets, you should convert your strings first
534 to the locale-specific encoding using \f(CW\*(C`$term\->locale_encode\*(C'\fR.
535 .ie n .IP "$nrow = $term\->nrow" 4
536 .el .IP "$nrow = \f(CW$term\fR\->nrow" 4
537 .IX Item "$nrow = $term->nrow"
538 .PD 0
539 .ie n .IP "$ncol = $term\->ncol" 4
540 .el .IP "$ncol = \f(CW$term\fR\->ncol" 4
541 .IX Item "$ncol = $term->ncol"
542 .PD
543 Return the number of rows/columns of the terminal window (i.e. as
544 specified by \f(CW\*(C`\-geometry\*(C'\fR, excluding any scrollback).
545 .ie n .IP "$nsaved = $term\->nsaved" 4
546 .el .IP "$nsaved = \f(CW$term\fR\->nsaved" 4
547 .IX Item "$nsaved = $term->nsaved"
548 Returns the number of lines in the scrollback buffer.
549 .ie n .IP "$view_start = $term\->view_start ([$newvalue])" 4
550 .el .IP "$view_start = \f(CW$term\fR\->view_start ([$newvalue])" 4
551 .IX Item "$view_start = $term->view_start ([$newvalue])"
552 Returns the negative row number of the topmost line. Minimum value is
553 \&\f(CW0\fR, which displays the normal terminal contents. Larger values scroll
554 this many lines into the scrollback buffer.
555 .IP "$term\->want_refresh" 4
556 .IX Item "$term->want_refresh"
557 Requests a screen refresh. At the next opportunity, rxvt-unicode will
558 compare the on-screen display with its stored representation. If they
559 differ, it redraws the differences.
560 .Sp
561 Used after changing terminal contents to display them.
562 .ie n .IP "$text = $term\fR\->ROW_t ($row_number[, \f(CW$new_text\fR[, \f(CW$start_col]])" 4
563 .el .IP "$text = \f(CW$term\fR\->ROW_t ($row_number[, \f(CW$new_text\fR[, \f(CW$start_col\fR]])" 4
564 .IX Item "$text = $term->ROW_t ($row_number[, $new_text[, $start_col]])"
565 Returns the text of the entire row with number \f(CW$row_number\fR. Row \f(CW0\fR
566 is the topmost terminal line, row \f(CW\*(C`$term\->$ncol\-1\*(C'\fR is the bottommost
567 terminal line. The scrollback buffer starts at line \f(CW\*(C`\-1\*(C'\fR and extends to
568 line \f(CW\*(C`\-$term\->nsaved\*(C'\fR. Nothing will be returned if a nonexistent line
569 is requested.
570 .Sp
571 If \f(CW$new_text\fR is specified, it will replace characters in the current
572 line, starting at column \f(CW$start_col\fR (default \f(CW0\fR), which is useful
573 to replace only parts of a line. The font index in the rendition will
574 automatically be updated.
575 .Sp
576 \&\f(CW$text\fR is in a special encoding: tabs and wide characters that use more
577 than one cell when displayed are padded with urxvt::NOCHAR characters
578 (\f(CW\*(C`chr 65535\*(C'\fR). Characters with combining characters and other characters
579 that do not fit into the normal tetx encoding will be replaced with
580 characters in the private use area.
581 .Sp
582 You have to obey this encoding when changing text. The advantage is
583 that \f(CW\*(C`substr\*(C'\fR and similar functions work on screen cells and not on
584 characters.
585 .Sp
586 The methods \f(CW\*(C`$term\->special_encode\*(C'\fR and \f(CW\*(C`$term\->special_decode\*(C'\fR
587 can be used to convert normal strings into this encoding and vice versa.
588 .ie n .IP "$rend = $term\fR\->ROW_r ($row_number[, \f(CW$new_rend\fR[, \f(CW$start_col]])" 4
589 .el .IP "$rend = \f(CW$term\fR\->ROW_r ($row_number[, \f(CW$new_rend\fR[, \f(CW$start_col\fR]])" 4
590 .IX Item "$rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])"
591 Like \f(CW\*(C`$term\->ROW_t\*(C'\fR, but returns an arrayref with rendition
592 bitsets. Rendition bitsets contain information about colour, font, font
593 styles and similar information. See also \f(CW\*(C`$term\->ROW_t\*(C'\fR.
594 .Sp
595 When setting rendition, the font mask will be ignored.
596 .Sp
597 See the section on \s-1RENDITION\s0, above.
598 .ie n .IP "$length = $term\fR\->ROW_l ($row_number[, \f(CW$new_length])" 4
599 .el .IP "$length = \f(CW$term\fR\->ROW_l ($row_number[, \f(CW$new_length\fR])" 4
600 .IX Item "$length = $term->ROW_l ($row_number[, $new_length])"
601 Returns the number of screen cells that are in use (\*(L"the line
602 length\*(R"). Unlike the urxvt core, this returns \f(CW\*(C`$term\->ncol\*(C'\fR if the
603 line is joined with the following one.
604 .ie n .IP "$bool = $term\->is_longer ($row_number)" 4
605 .el .IP "$bool = \f(CW$term\fR\->is_longer ($row_number)" 4
606 .IX Item "$bool = $term->is_longer ($row_number)"
607 Returns true if the row is part of a multiple-row logical \*(L"line\*(R" (i.e.
608 joined with the following row), which means all characters are in use
609 and it is continued on the next row (and possibly a continuation of the
610 previous row(s)).
611 .ie n .IP "$line = $term\->line ($row_number)" 4
612 .el .IP "$line = \f(CW$term\fR\->line ($row_number)" 4
613 .IX Item "$line = $term->line ($row_number)"
614 Create and return a new \f(CW\*(C`urxvt::line\*(C'\fR object that stores information
615 about the logical line that row \f(CW$row_number\fR is part of. It supports the
616 following methods:
617 .RS 4
618 .ie n .IP "$text = $line\->t" 4
619 .el .IP "$text = \f(CW$line\fR\->t" 4
620 .IX Item "$text = $line->t"
621 Returns the full text of the line, similar to \f(CW\*(C`ROW_t\*(C'\fR
622 .ie n .IP "$rend = $line\->r" 4
623 .el .IP "$rend = \f(CW$line\fR\->r" 4
624 .IX Item "$rend = $line->r"
625 Returns the full rendition array of the line, similar to \f(CW\*(C`ROW_r\*(C'\fR
626 .ie n .IP "$length = $line\->l" 4
627 .el .IP "$length = \f(CW$line\fR\->l" 4
628 .IX Item "$length = $line->l"
629 Returns the length of the line in cells, similar to \f(CW\*(C`ROW_l\*(C'\fR.
630 .ie n .IP "$rownum = $line\->beg" 4
631 .el .IP "$rownum = \f(CW$line\fR\->beg" 4
632 .IX Item "$rownum = $line->beg"
633 .PD 0
634 .ie n .IP "$rownum = $line\->end" 4
635 .el .IP "$rownum = \f(CW$line\fR\->end" 4
636 .IX Item "$rownum = $line->end"
637 .PD
638 Return the row number of the first/last row of the line, respectively.
639 .ie n .IP "$offset = $line\fR\->offset_of ($row, \f(CW$col)" 4
640 .el .IP "$offset = \f(CW$line\fR\->offset_of ($row, \f(CW$col\fR)" 4
641 .IX Item "$offset = $line->offset_of ($row, $col)"
642 Returns the character offset of the given row|col pair within the logical
643 line.
644 .ie n .IP "($row, $col\fR) = \f(CW$line\->coord_of ($offset)" 4
645 .el .IP "($row, \f(CW$col\fR) = \f(CW$line\fR\->coord_of ($offset)" 4
646 .IX Item "($row, $col) = $line->coord_of ($offset)"
647 Translates a string offset into terminal coordinates again.
648 .RE
649 .RS 4
650 .RE
651 .ie n .IP "($row, $col\fR) = \f(CW$line\fR\->coord_of ($offset) =item \f(CW$text\fR = \f(CW$term\fR\->special_encode \f(CW$string" 4
652 .el .IP "($row, \f(CW$col\fR) = \f(CW$line\fR\->coord_of ($offset) =item \f(CW$text\fR = \f(CW$term\fR\->special_encode \f(CW$string\fR" 4
653 .IX Item "($row, $col) = $line->coord_of ($offset) =item $text = $term->special_encode $string"
654 Converts a perl string into the special encoding used by rxvt\-unicode,
655 where one character corresponds to one screen cell. See
656 \&\f(CW\*(C`$term\->ROW_t\*(C'\fR for details.
657 .ie n .IP "$string = $term\fR\->special_decode \f(CW$text" 4
658 .el .IP "$string = \f(CW$term\fR\->special_decode \f(CW$text\fR" 4
659 .IX Item "$string = $term->special_decode $text"
660 Converts rxvt-unicodes text reprsentation into a perl string. See
661 \&\f(CW\*(C`$term\->ROW_t\*(C'\fR for details.
662 .ie n .Sh "The ""urxvt::timer"" Class"
663 .el .Sh "The \f(CWurxvt::timer\fP Class"
664 .IX Subsection "The urxvt::timer Class"
665 This class implements timer watchers/events. Time is represented as a
666 fractional number of seconds since the epoch. Example:
667 .PP
668 .Vb 8
669 \& $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
670 \& $term->{timer} = urxvt::timer
671 \& ->new
672 \& ->interval (1)
673 \& ->cb (sub {
674 \& $term->{overlay}->set (0, 0,
675 \& sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
676 \& });
677 .Ve
678 .IP "$timer = new urxvt::timer" 4
679 .IX Item "$timer = new urxvt::timer"
680 Create a new timer object in started state. It is scheduled to fire
681 immediately.
682 .ie n .IP "$timer = $timer\fR\->cb (sub { my ($timer) = \f(CW@_; ... })" 4
683 .el .IP "$timer = \f(CW$timer\fR\->cb (sub { my ($timer) = \f(CW@_\fR; ... })" 4
684 .IX Item "$timer = $timer->cb (sub { my ($timer) = @_; ... })"
685 Set the callback to be called when the timer triggers.
686 .ie n .IP "$tstamp = $timer\->at" 4
687 .el .IP "$tstamp = \f(CW$timer\fR\->at" 4
688 .IX Item "$tstamp = $timer->at"
689 Return the time this watcher will fire next.
690 .ie n .IP "$timer = $timer\->set ($tstamp)" 4
691 .el .IP "$timer = \f(CW$timer\fR\->set ($tstamp)" 4
692 .IX Item "$timer = $timer->set ($tstamp)"
693 Set the time the event is generated to \f(CW$tstamp\fR.
694 .ie n .IP "$timer = $timer\->interval ($interval)" 4
695 .el .IP "$timer = \f(CW$timer\fR\->interval ($interval)" 4
696 .IX Item "$timer = $timer->interval ($interval)"
697 Normally (and when \f(CW$interval\fR is \f(CW0\fR), the timer will automatically
698 stop after it has fired once. If \f(CW$interval\fR is non\-zero, then the timer
699 is automatically rescheduled at the given intervals.
700 .ie n .IP "$timer = $timer\->start" 4
701 .el .IP "$timer = \f(CW$timer\fR\->start" 4
702 .IX Item "$timer = $timer->start"
703 Start the timer.
704 .ie n .IP "$timer = $timer\->start ($tstamp)" 4
705 .el .IP "$timer = \f(CW$timer\fR\->start ($tstamp)" 4
706 .IX Item "$timer = $timer->start ($tstamp)"
707 Set the event trigger time to \f(CW$tstamp\fR and start the timer.
708 .ie n .IP "$timer = $timer\->stop" 4
709 .el .IP "$timer = \f(CW$timer\fR\->stop" 4
710 .IX Item "$timer = $timer->stop"
711 Stop the timer.
712 .ie n .Sh "The ""urxvt::iow"" Class"
713 .el .Sh "The \f(CWurxvt::iow\fP Class"
714 .IX Subsection "The urxvt::iow Class"
715 This class implements io watchers/events. Example:
716 .PP
717 .Vb 12
718 \& $term->{socket} = ...
719 \& $term->{iow} = urxvt::iow
720 \& ->new
721 \& ->fd (fileno $term->{socket})
722 \& ->events (1) # wait for read data
723 \& ->start
724 \& ->cb (sub {
725 \& my ($iow, $revents) = @_;
726 \& # $revents must be 1 here, no need to check
727 \& sysread $term->{socket}, my $buf, 8192
728 \& or end-of-file;
729 \& });
730 .Ve
731 .IP "$iow = new urxvt::iow" 4
732 .IX Item "$iow = new urxvt::iow"
733 Create a new io watcher object in stopped state.
734 .ie n .IP "$iow = $iow\fR\->cb (sub { my ($iow, \f(CW$reventmask\fR) = \f(CW@_; ... })" 4
735 .el .IP "$iow = \f(CW$iow\fR\->cb (sub { my ($iow, \f(CW$reventmask\fR) = \f(CW@_\fR; ... })" 4
736 .IX Item "$iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... })"
737 Set the callback to be called when io events are triggered. \f(CW$reventmask\fR
738 is a bitset as described in the \f(CW\*(C`events\*(C'\fR method.
739 .ie n .IP "$iow = $iow\->fd ($fd)" 4
740 .el .IP "$iow = \f(CW$iow\fR\->fd ($fd)" 4
741 .IX Item "$iow = $iow->fd ($fd)"
742 Set the filedescriptor (not handle) to watch.
743 .ie n .IP "$iow = $iow\->events ($eventmask)" 4
744 .el .IP "$iow = \f(CW$iow\fR\->events ($eventmask)" 4
745 .IX Item "$iow = $iow->events ($eventmask)"
746 Set the event mask to watch. Bit #0 (value \f(CW1\fR) enables watching for read
747 data, Bit #1 (value \f(CW2\fR) enables watching for write data.
748 .ie n .IP "$iow = $iow\->start" 4
749 .el .IP "$iow = \f(CW$iow\fR\->start" 4
750 .IX Item "$iow = $iow->start"
751 Start watching for requested events on the given handle.
752 .ie n .IP "$iow = $iow\->stop" 4
753 .el .IP "$iow = \f(CW$iow\fR\->stop" 4
754 .IX Item "$iow = $iow->stop"
755 Stop watching for events on the given filehandle.
756 .SH "ENVIRONMENT"
757 .IX Header "ENVIRONMENT"
758 .Sh "\s-1URXVT_PERL_VERBOSITY\s0"
759 .IX Subsection "URXVT_PERL_VERBOSITY"
760 This variable controls the verbosity level of the perl extension. Higher
761 numbers indicate more verbose output.
762 .IP "=0 \- only fatal messages" 4
763 .IX Item "=0 - only fatal messages"
764 .PD 0
765 .IP "=3 \- script loading and management" 4
766 .IX Item "=3 - script loading and management"
767 .IP "=10 \- all events received" 4
768 .IX Item "=10 - all events received"
769 .PD
770 .SH "AUTHOR"
771 .IX Header "AUTHOR"
772 .Vb 2
773 \& Marc Lehmann <pcg@goof.com>
774 \& http://software.schmorp.de/pkg/rxvt-unicode
775 .Ve