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Revision: 1.10
Committed: Tue Jan 3 23:41:37 2006 UTC (18 years, 6 months ago) by root
Branch: MAIN
Changes since 1.9: +11 -9 lines
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131     .IX Title "rxvt 3"
132 root 1.10 .TH rxvt 3 "2006-01-04" "6.2" "RXVT-UNICODE"
133 root 1.1 .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 1.7 scripts will be shared (but not enabled) for all terminals.
165     .Sh "Prepackaged Extensions"
166     .IX Subsection "Prepackaged Extensions"
167 root 1.6 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 root 1.10 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 root 1.9 .Sp
182     It also offers the following bindable event:
183 root 1.6 .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 root 1.8 Displays a digital clock using the built-in overlay.
197     .IP "example-refresh-hooks" 4
198     .IX Item "example-refresh-hooks"
199 root 1.6 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 root 1.3 .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 root 1.9 \&\f(CW\*(C`_hook\*(C'\fR) are reserved for internal uses and \fB\s-1MUST\s0 \s-1NOT\s0\fR be accessed or
208 root 1.3 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 root 1.1 .Sh "Hooks"
215     .IX Subsection "Hooks"
216 root 1.9 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 root 1.1 .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 root 1.9 .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 root 1.1 .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 root 1.5 .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, $string"
316     Called whenever the user presses a key combination that has a
317     \&\f(CW\*(C`perl:string\*(C'\fR action bound to it (see description of the \fBkeysym\fR
318     resource in the @@RXVT_NAME@@(1) manpage).
319 root 1.9 .ie n .Sh "Variables in the ""urxvt"" Package"
320     .el .Sh "Variables in the \f(CWurxvt\fP Package"
321     .IX Subsection "Variables in the urxvt Package"
322     .IP "$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 root 1.1 .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 $string"
338 root 1.3 Calls \f(CW\*(C`rxvt_warn\*(C'\fR with the given string which should not include a
339 root 1.1 newline. The module also overwrites the \f(CW\*(C`warn\*(C'\fR builtin with a function
340     that calls this function.
341     .Sp
342     Using this function has the advantage that its output ends up in the
343     correct place, e.g. on stderr of the connecting urxvtc client.
344     .IP "$time = urxvt::NOW" 4
345     .IX Item "$time = urxvt::NOW"
346     Returns the \*(L"current time\*(R" (as per the event loop).
347 root 1.8 .Sh "\s-1RENDITION\s0"
348     .IX Subsection "RENDITION"
349     Rendition bitsets contain information about colour, font, font styles and
350     similar information for each screen cell.
351     .PP
352     The following \*(L"macros\*(R" deal with changes in rendition sets. You should
353     never just create a bitset, you should always modify an existing one,
354     as they contain important information required for correct operation of
355     rxvt\-unicode.
356     .IP "$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, $new_value)"
395     Change the custom value.
396 root 1.1 .ie n .Sh "The ""urxvt::term"" Class"
397     .el .Sh "The \f(CWurxvt::term\fP Class"
398     .IX Subsection "The urxvt::term Class"
399 root 1.2 .ie n .IP "$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 root 1.4 \& italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
427     \& mouseWheelScrollPage name pastableTabs path perl_eval perl_ext
428 root 1.3 \& 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 root 1.2 .Ve
435 root 1.1 .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$newtext\fR.
457 root 1.8 .Sp
458     #=item \f(CW$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[, $border]])"
487 root 1.1 Create a new (empty) overlay at the given position with the given
488 root 1.8 width/height. \f(CW$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$y\fR is negative, then this is counted from the
495     right/bottom side, respectively.
496     .Sp
497     This method returns an urxvt::overlay object. The overlay will be visible
498     as long as the perl object is referenced.
499     .Sp
500 root 1.9 The methods currently supported on \f(CW\*(C`urxvt::overlay\*(C'\fR objects are:
501     .RS 4
502 root 1.8 .ie n .IP "$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`$term\->ROW_r\*(C'\fR in that it puts
506     text in rxvt\-unicode's special encoding and an array of rendition values
507     at a specific position inside the overlay.
508 root 1.9 .IP "$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 "$overlay->show"
513     If hidden, display the overlay again.
514     .RE
515     .RS 4
516     .RE
517 root 1.3 .ie n .IP "$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 root 1.6 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 root 1.9 line \f(CW\*(C`\-$term\->nsaved\*(C'\fR. Nothing will be returned if a nonexistent line
569     is requested.
570 root 1.6 .Sp
571     If \f(CW$new_text\fR is specified, it will replace characters in the current
572     line, starting at column \f(CW$start_col\fR (default \f(CW0\fR), which is useful
573 root 1.8 to replace only parts of a line. The font index in the rendition will
574 root 1.6 automatically be updated.
575     .Sp
576     \&\f(CW$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`$term\->ROW_t\*(C'\fR.
594     .Sp
595     When setting rendition, the font mask will be ignored.
596     .Sp
597 root 1.8 See the section on \s-1RENDITION\s0, above.
598 root 1.6 .ie n .IP "$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[, $new_length])"
601 root 1.9 Returns the number of screen cells that are in use (\*(L"the line
602     length\*(R"). Unlike the urxvt core, this returns \f(CW\*(C`$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 $string"
654 root 1.6 Converts a perl string into the special encoding used by rxvt\-unicode,
655     where one character corresponds to one screen cell. See
656     \&\f(CW\*(C`$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 root 1.1 .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 root 1.8 .Vb 8
669     \& $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
670 root 1.1 \& $term->{timer} = urxvt::timer
671     \& ->new
672 root 1.8 \& ->interval (1)
673 root 1.1 \& ->cb (sub {
674 root 1.8 \& $term->{overlay}->set (0, 0,
675     \& sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
676 root 1.1 \& });
677     .Ve
678     .IP "$timer = new urxvt::timer" 4
679     .IX Item "$timer = new urxvt::timer"
680 root 1.8 Create a new timer object in started state. It is scheduled to fire
681     immediately.
682 root 1.1 .ie n .IP "$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$tstamp\fR.
694 root 1.8 .ie n .IP "$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 root 1.1 .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 root 1.2 .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 root 1.10 .IP "=0 \- only fatal messages" 4
763     .IX Item "=0 - only fatal messages"
764 root 1.2 .PD 0
765 root 1.10 .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 root 1.2 .PD
770 root 1.1 .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