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Revision: 1.14
Committed: Sat Jan 7 04:19:43 2006 UTC (18 years, 6 months ago) by root
Branch: MAIN
Changes since 1.13: +151 -48 lines
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# Content
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129 .\" ========================================================================
130 .\"
131 .IX Title "rxvt 3"
132 .TH rxvt 3 "2006-01-07" "6.3" "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 "mark-urls" 4
198 .IX Item "mark-urls"
199 Uses per-line display filtering (\f(CW\*(C`on_line_update\*(C'\fR) to underline urls.
200 .IP "block-graphics-to-ascii" 4
201 .IX Item "block-graphics-to-ascii"
202 A not very useful example of filtering all text output to the terminal,
203 by replacing all line-drawing characters (U+2500 .. U+259F) by a
204 similar-looking ascii character.
205 .IP "example-refresh-hooks" 4
206 .IX Item "example-refresh-hooks"
207 Displays a very simple digital clock in the upper right corner of the
208 window. Illustrates overwriting the refresh callbacks to create your own
209 overlays or changes.
210 .Sh "General \s-1API\s0 Considerations"
211 .IX Subsection "General API Considerations"
212 All objects (such as terminals, time watchers etc.) are typical
213 reference-to-hash objects. The hash can be used to store anything you
214 like. All members starting with an underscore (such as \f(CW\*(C`_ptr\*(C'\fR or
215 \&\f(CW\*(C`_hook\*(C'\fR) are reserved for internal uses and \fB\s-1MUST\s0 \s-1NOT\s0\fR be accessed or
216 modified).
217 .PP
218 When objects are destroyed on the \*(C+ side, the perl object hashes are
219 emptied, so its best to store related objects such as time watchers and
220 the like inside the terminal object so they get destroyed as soon as the
221 terminal is destroyed.
222 .PP
223 Argument names also often indicate the type of a parameter. Here are some
224 hints on what they mean:
225 .IP "$text" 4
226 .IX Item "$text"
227 Rxvt-unicodes special way of encoding text, where one \*(L"unicode\*(R" character
228 always represents one screen cell. See row_t for a discussion of this format.
229 .IP "$string" 4
230 .IX Item "$string"
231 A perl text string, with an emphasis on \fItext\fR. It can store all unicode
232 characters and is to be distinguished with text encoded in a specific
233 encoding (often locale\-specific) and binary data.
234 .IP "$octets" 4
235 .IX Item "$octets"
236 Either binary data or \- more common \- a text string encoded in a
237 locale-specific way.
238 .Sh "Hooks"
239 .IX Subsection "Hooks"
240 The following subroutines can be declared in extension files, and will be
241 called whenever the relevant event happens.
242 .PP
243 The first argument passed to them is an object private to each terminal
244 and extension package. You can call all \f(CW\*(C`urxvt::term\*(C'\fR methods on it, but
245 its not a real \f(CW\*(C`urxvt::term\*(C'\fR object. Instead, the real \f(CW\*(C`urxvt::term\*(C'\fR
246 object that is shared between all packages is stored in the \f(CW\*(C`term\*(C'\fR
247 member.
248 .PP
249 All of them must return a boolean value. If it is true, then the event
250 counts as being \fIconsumed\fR, and the invocation of other hooks is skipped,
251 and the relevant action might not be carried out by the \*(C+ code.
252 .PP
253 When in doubt, return a false value (preferably \f(CW\*(C`()\*(C'\fR).
254 .ie n .IP "on_init $term" 4
255 .el .IP "on_init \f(CW$term\fR" 4
256 .IX Item "on_init $term"
257 Called after a new terminal object has been initialized, but before
258 windows are created or the command gets run. Most methods are unsafe to
259 call or deliver senseless data, as terminal size and other characteristics
260 have not yet been determined. You can safely query and change resources,
261 though.
262 .ie n .IP "on_reset $term" 4
263 .el .IP "on_reset \f(CW$term\fR" 4
264 .IX Item "on_reset $term"
265 Called after the screen is \*(L"reset\*(R" for any reason, such as resizing or
266 control sequences. Here is where you can react on changes to size-related
267 variables.
268 .ie n .IP "on_start $term" 4
269 .el .IP "on_start \f(CW$term\fR" 4
270 .IX Item "on_start $term"
271 Called at the very end of initialisation of a new terminal, just before
272 returning to the mainloop.
273 .ie n .IP "on_sel_make $term\fR, \f(CW$eventtime" 4
274 .el .IP "on_sel_make \f(CW$term\fR, \f(CW$eventtime\fR" 4
275 .IX Item "on_sel_make $term, $eventtime"
276 Called whenever a selection has been made by the user, but before the
277 selection text is copied, so changes to the beginning, end or type of the
278 selection will be honored.
279 .Sp
280 Returning a true value aborts selection making by urxvt, in which case you
281 have to make a selection yourself by calling \f(CW\*(C`$term\->selection_grab\*(C'\fR.
282 .ie n .IP "on_sel_grab $term\fR, \f(CW$eventtime" 4
283 .el .IP "on_sel_grab \f(CW$term\fR, \f(CW$eventtime\fR" 4
284 .IX Item "on_sel_grab $term, $eventtime"
285 Called whenever a selection has been copied, but before the selection is
286 requested from the server. The selection text can be queried and changed
287 by calling \f(CW\*(C`$term\->selection\*(C'\fR.
288 .Sp
289 Returning a true value aborts selection grabbing. It will still be hilighted.
290 .ie n .IP "on_sel_extend $term" 4
291 .el .IP "on_sel_extend \f(CW$term\fR" 4
292 .IX Item "on_sel_extend $term"
293 Called whenever the user tries to extend the selection (e.g. with a double
294 click) and is either supposed to return false (normal operation), or
295 should extend the selection itelf and return true to suppress the built-in
296 processing.
297 .Sp
298 See the \fIselection\fR example extension.
299 .ie n .IP "on_focus_in $term" 4
300 .el .IP "on_focus_in \f(CW$term\fR" 4
301 .IX Item "on_focus_in $term"
302 Called whenever the window gets the keyboard focus, before urxvt does
303 focus in processing.
304 .ie n .IP "on_focus_out $term" 4
305 .el .IP "on_focus_out \f(CW$term\fR" 4
306 .IX Item "on_focus_out $term"
307 Called wheneever the window loses keyboard focus, before urxvt does focus
308 out processing.
309 .ie n .IP "on_view_change $term\fR, \f(CW$offset" 4
310 .el .IP "on_view_change \f(CW$term\fR, \f(CW$offset\fR" 4
311 .IX Item "on_view_change $term, $offset"
312 Called whenever the view offset changes, i..e the user or program
313 scrolls. Offset \f(CW0\fR means display the normal terminal, positive values
314 show this many lines of scrollback.
315 .ie n .IP "on_scroll_back $term\fR, \f(CW$lines\fR, \f(CW$saved" 4
316 .el .IP "on_scroll_back \f(CW$term\fR, \f(CW$lines\fR, \f(CW$saved\fR" 4
317 .IX Item "on_scroll_back $term, $lines, $saved"
318 Called whenever lines scroll out of the terminal area into the scrollback
319 buffer. \f(CW$lines\fR is the number of lines scrolled out and may be larger
320 than the scroll back buffer or the terminal.
321 .Sp
322 It is called before lines are scrolled out (so rows 0 .. min ($lines \- 1,
323 \&\f(CW$nrow\fR \- 1) represent the lines to be scrolled out). \f(CW$saved\fR is the total
324 number of lines that will be in the scrollback buffer.
325 .ie n .IP "on_tty_activity $term *NYI*" 4
326 .el .IP "on_tty_activity \f(CW$term\fR *NYI*" 4
327 .IX Item "on_tty_activity $term *NYI*"
328 Called whenever the program(s) running in the urxvt window send output.
329 .ie n .IP "on_osc_seq $term\fR, \f(CW$string" 4
330 .el .IP "on_osc_seq \f(CW$term\fR, \f(CW$string\fR" 4
331 .IX Item "on_osc_seq $term, $string"
332 Called whenever the \fB\s-1ESC\s0 ] 777 ; string \s-1ST\s0\fR command sequence (\s-1OSC\s0 =
333 operating system command) is processed. Cursor position and other state
334 information is up-to-date when this happens. For interoperability, the
335 string should start with the extension name and a colon, to distinguish
336 it from commands for other extensions, and this might be enforced in the
337 future.
338 .Sp
339 Be careful not ever to trust (in a security sense) the data you receive,
340 as its source can not easily be controleld (e\-mail content, messages from
341 other users on the same system etc.).
342 .ie n .IP "on_add_lines $term\fR, \f(CW$string" 4
343 .el .IP "on_add_lines \f(CW$term\fR, \f(CW$string\fR" 4
344 .IX Item "on_add_lines $term, $string"
345 Called whenever text is about to be output, with the text as argument. You
346 can filter/change and output the text yourself by returning a true value
347 and calling \f(CW\*(C`$term\->scr_add_lines\*(C'\fR yourself. Please note that this
348 might be very slow, however, as your hook is called for \fBall\fR text being
349 output.
350 .ie n .IP "on_line_update $term\fR, \f(CW$row" 4
351 .el .IP "on_line_update \f(CW$term\fR, \f(CW$row\fR" 4
352 .IX Item "on_line_update $term, $row"
353 Called whenever a line was updated or changed. Can be used to filter
354 screen output (e.g. underline urls or other useless stuff). Only lines
355 that are being shown will be filtered, and, due to performance reasons,
356 not always immediately.
357 .Sp
358 The row number is always the topmost row of the line if the line spans
359 multiple rows.
360 .Sp
361 Please note that, if you change the line, then the hook might get called
362 later with the already-modified line (e.g. if unrelated parts change), so
363 you cannot just toggle rendition bits, but only set them.
364 .ie n .IP "on_refresh_begin $term" 4
365 .el .IP "on_refresh_begin \f(CW$term\fR" 4
366 .IX Item "on_refresh_begin $term"
367 Called just before the screen gets redrawn. Can be used for overlay
368 or similar effects by modify terminal contents in refresh_begin, and
369 restoring them in refresh_end. The built-in overlay and selection display
370 code is run after this hook, and takes precedence.
371 .ie n .IP "on_refresh_end $term" 4
372 .el .IP "on_refresh_end \f(CW$term\fR" 4
373 .IX Item "on_refresh_end $term"
374 Called just after the screen gets redrawn. See \f(CW\*(C`on_refresh_begin\*(C'\fR.
375 .ie n .IP "on_keyboard_command $term\fR, \f(CW$string" 4
376 .el .IP "on_keyboard_command \f(CW$term\fR, \f(CW$string\fR" 4
377 .IX Item "on_keyboard_command $term, $string"
378 Called whenever the user presses a key combination that has a
379 \&\f(CW\*(C`perl:string\*(C'\fR action bound to it (see description of the \fBkeysym\fR
380 resource in the @@RXVT_NAME@@(1) manpage).
381 .ie n .IP "on_key_press $term\fR, \f(CW$event\fR, \f(CW$octets" 4
382 .el .IP "on_key_press \f(CW$term\fR, \f(CW$event\fR, \f(CW$octets\fR" 4
383 .IX Item "on_key_press $term, $event, $octets"
384 .PD 0
385 .ie n .IP "on_key_release $term\fR, \f(CW$event" 4
386 .el .IP "on_key_release \f(CW$term\fR, \f(CW$event\fR" 4
387 .IX Item "on_key_release $term, $event"
388 .ie n .IP "on_button_press $term\fR, \f(CW$event" 4
389 .el .IP "on_button_press \f(CW$term\fR, \f(CW$event\fR" 4
390 .IX Item "on_button_press $term, $event"
391 .ie n .IP "on_button_release $term\fR, \f(CW$event" 4
392 .el .IP "on_button_release \f(CW$term\fR, \f(CW$event\fR" 4
393 .IX Item "on_button_release $term, $event"
394 .ie n .IP "on_motion_notify $term\fR, \f(CW$event" 4
395 .el .IP "on_motion_notify \f(CW$term\fR, \f(CW$event\fR" 4
396 .IX Item "on_motion_notify $term, $event"
397 .PD
398 Called whenever the corresponding X event is received for the terminal If
399 the hook returns true, then the even will be ignored by rxvt\-unicode.
400 .Sp
401 The event is a hash with most values as named by Xlib (see the XEvent
402 manpage), with the additional members \f(CW\*(C`row\*(C'\fR and \f(CW\*(C`col\*(C'\fR, which are the row
403 and column under the mouse cursor.
404 .Sp
405 \&\f(CW\*(C`on_key_press\*(C'\fR additionally receives the string rxvt-unicode would
406 output, if any, in locale-specific encoding.
407 .Sp
408 subwindow.
409 .ie n .Sh "Variables in the ""urxvt"" Package"
410 .el .Sh "Variables in the \f(CWurxvt\fP Package"
411 .IX Subsection "Variables in the urxvt Package"
412 .IP "$urxvt::TERM" 4
413 .IX Item "$urxvt::TERM"
414 The current terminal. This variable stores the current \f(CW\*(C`urxvt::term\*(C'\fR
415 object, whenever a callback/hook is executing.
416 .ie n .Sh "Functions in the ""urxvt"" Package"
417 .el .Sh "Functions in the \f(CWurxvt\fP Package"
418 .IX Subsection "Functions in the urxvt Package"
419 .IP "$term = new urxvt [arg...]" 4
420 .IX Item "$term = new urxvt [arg...]"
421 Creates a new terminal, very similar as if you had started it with
422 \&\f(CW\*(C`system $binfile, arg...\*(C'\fR. Croaks (and probably outputs an error message)
423 if the new instance couldn't be created. Returns \f(CW\*(C`undef\*(C'\fR if the new
424 instance didn't initialise perl, and the terminal object otherwise. The
425 \&\f(CW\*(C`init\*(C'\fR and \f(CW\*(C`start\*(C'\fR hooks will be called during the call.
426 .ie n .IP "urxvt::fatal $errormessage" 4
427 .el .IP "urxvt::fatal \f(CW$errormessage\fR" 4
428 .IX Item "urxvt::fatal $errormessage"
429 Fatally aborts execution with the given error message. Avoid at all
430 costs! The only time this is acceptable is when the terminal process
431 starts up.
432 .ie n .IP "urxvt::warn $string" 4
433 .el .IP "urxvt::warn \f(CW$string\fR" 4
434 .IX Item "urxvt::warn $string"
435 Calls \f(CW\*(C`rxvt_warn\*(C'\fR with the given string which should not include a
436 newline. The module also overwrites the \f(CW\*(C`warn\*(C'\fR builtin with a function
437 that calls this function.
438 .Sp
439 Using this function has the advantage that its output ends up in the
440 correct place, e.g. on stderr of the connecting urxvtc client.
441 .IP "$time = urxvt::NOW" 4
442 .IX Item "$time = urxvt::NOW"
443 Returns the \*(L"current time\*(R" (as per the event loop).
444 .Sh "\s-1RENDITION\s0"
445 .IX Subsection "RENDITION"
446 Rendition bitsets contain information about colour, font, font styles and
447 similar information for each screen cell.
448 .PP
449 The following \*(L"macros\*(R" deal with changes in rendition sets. You should
450 never just create a bitset, you should always modify an existing one,
451 as they contain important information required for correct operation of
452 rxvt\-unicode.
453 .IP "$rend = urxvt::DEFAULT_RSTYLE" 4
454 .IX Item "$rend = urxvt::DEFAULT_RSTYLE"
455 Returns the default rendition, as used when the terminal is starting up or
456 being reset. Useful as a base to start when creating renditions.
457 .IP "$rend = urxvt::OVERLAY_RSTYLE" 4
458 .IX Item "$rend = urxvt::OVERLAY_RSTYLE"
459 Return the rendition mask used for overlays by default.
460 .IP "$rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline" 4
461 .IX Item "$rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline"
462 Return the bit that enabled bold, italic, blink, reverse-video and
463 underline, respectively. To enable such a style, just logically \s-1OR\s0 it into
464 the bitset.
465 .ie n .IP "$foreground = urxvt::GET_BASEFG $rend" 4
466 .el .IP "$foreground = urxvt::GET_BASEFG \f(CW$rend\fR" 4
467 .IX Item "$foreground = urxvt::GET_BASEFG $rend"
468 .PD 0
469 .ie n .IP "$background = urxvt::GET_BASEBG $rend" 4
470 .el .IP "$background = urxvt::GET_BASEBG \f(CW$rend\fR" 4
471 .IX Item "$background = urxvt::GET_BASEBG $rend"
472 .PD
473 Return the foreground/background colour index, respectively.
474 .ie n .IP "$rend = urxvt::SET_FGCOLOR ($rend, $new_colour)" 4
475 .el .IP "$rend = urxvt::SET_FGCOLOR ($rend, \f(CW$new_colour\fR)" 4
476 .IX Item "$rend = urxvt::SET_FGCOLOR ($rend, $new_colour)"
477 .PD 0
478 .ie n .IP "$rend = urxvt::SET_BGCOLOR ($rend, $new_colour)" 4
479 .el .IP "$rend = urxvt::SET_BGCOLOR ($rend, \f(CW$new_colour\fR)" 4
480 .IX Item "$rend = urxvt::SET_BGCOLOR ($rend, $new_colour)"
481 .PD
482 Replace the foreground/background colour in the rendition mask with the
483 specified one.
484 .IP "$value = urxvt::GET_CUSTOM ($rend)" 4
485 .IX Item "$value = urxvt::GET_CUSTOM ($rend)"
486 Return the \*(L"custom\*(R" value: Every rendition has 5 bits for use by
487 extensions. They can be set and changed as you like and are initially
488 zero.
489 .ie n .IP "$rend = urxvt::SET_CUSTOM ($rend, $new_value)" 4
490 .el .IP "$rend = urxvt::SET_CUSTOM ($rend, \f(CW$new_value\fR)" 4
491 .IX Item "$rend = urxvt::SET_CUSTOM ($rend, $new_value)"
492 Change the custom value.
493 .ie n .Sh "The ""urxvt::term"" Class"
494 .el .Sh "The \f(CWurxvt::term\fP Class"
495 .IX Subsection "The urxvt::term Class"
496 .IP "$term\->destroy" 4
497 .IX Item "$term->destroy"
498 Destroy the terminal object (close the window, free resources etc.).
499 .ie n .IP "$value = $term\fR\->resource ($name[, \f(CW$newval])" 4
500 .el .IP "$value = \f(CW$term\fR\->resource ($name[, \f(CW$newval\fR])" 4
501 .IX Item "$value = $term->resource ($name[, $newval])"
502 Returns the current resource value associated with a given name and
503 optionally sets a new value. Setting values is most useful in the \f(CW\*(C`init\*(C'\fR
504 hook. Unset resources are returned and accepted as \f(CW\*(C`undef\*(C'\fR.
505 .Sp
506 The new value must be properly encoded to a suitable character encoding
507 before passing it to this method. Similarly, the returned value may need
508 to be converted from the used encoding to text.
509 .Sp
510 Resource names are as defined in \fIsrc/rsinc.h\fR. Colours can be specified
511 as resource names of the form \f(CW\*(C`color+<index>\*(C'\fR, e.g. \f(CW\*(C`color+5\*(C'\fR. (will
512 likely change).
513 .Sp
514 Please note that resource strings will currently only be freed when the
515 terminal is destroyed, so changing options frequently will eat memory.
516 .Sp
517 Here is a a likely non-exhaustive list of resource names, not all of which
518 are supported in every build, please see the source to see the actual
519 list:
520 .Sp
521 .Vb 12
522 \& answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
523 \& borderLess color cursorBlink cursorUnderline cutchars delete_key
524 \& display_name embed ext_bwidth fade font geometry hold iconName
525 \& imFont imLocale inputMethod insecure int_bwidth intensityStyles
526 \& italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
527 \& mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
528 \& perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
529 \& reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
530 \& scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
531 \& scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
532 \& shade term_name title transparent transparent_all tripleclickwords
533 \& utmpInhibit visualBell
534 .Ve
535 .ie n .IP "$rend = $term\->rstyle ([$new_rstyle])" 4
536 .el .IP "$rend = \f(CW$term\fR\->rstyle ([$new_rstyle])" 4
537 .IX Item "$rend = $term->rstyle ([$new_rstyle])"
538 Return and optionally change the current rendition. Text that is output by
539 the terminal application will use this style.
540 .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->screen_cur ([$row, \f(CW$col])" 4
541 .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->screen_cur ([$row, \f(CW$col\fR])" 4
542 .IX Item "($row, $col) = $term->screen_cur ([$row, $col])"
543 Return the current coordinates of the text cursor position and optionally
544 set it (which is usually bad as applications don't expect that).
545 .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_mark ([$row, \f(CW$col])" 4
546 .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_mark ([$row, \f(CW$col\fR])" 4
547 .IX Item "($row, $col) = $term->selection_mark ([$row, $col])"
548 .PD 0
549 .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_beg ([$row, \f(CW$col])" 4
550 .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_beg ([$row, \f(CW$col\fR])" 4
551 .IX Item "($row, $col) = $term->selection_beg ([$row, $col])"
552 .ie n .IP "($row, $col\fR) = \f(CW$term\fR\->selection_end ([$row, \f(CW$col])" 4
553 .el .IP "($row, \f(CW$col\fR) = \f(CW$term\fR\->selection_end ([$row, \f(CW$col\fR])" 4
554 .IX Item "($row, $col) = $term->selection_end ([$row, $col])"
555 .PD
556 Return the current values of the selection mark, begin or end positions,
557 and optionally set them to new values.
558 .ie n .IP "$success = $term\->selection_grab ($eventtime)" 4
559 .el .IP "$success = \f(CW$term\fR\->selection_grab ($eventtime)" 4
560 .IX Item "$success = $term->selection_grab ($eventtime)"
561 Try to request the primary selection from the server (for example, as set
562 by the next method).
563 .ie n .IP "$oldtext = $term\->selection ([$newtext])" 4
564 .el .IP "$oldtext = \f(CW$term\fR\->selection ([$newtext])" 4
565 .IX Item "$oldtext = $term->selection ([$newtext])"
566 Return the current selection text and optionally replace it by \f(CW$newtext\fR.
567 .Sp
568 #=item \f(CW$term\fR\->overlay ($x, \f(CW$y\fR, \f(CW$text\fR)
569 #
570 #Create a simple multi-line overlay box. See the next method for details.
571 #
572 #=cut
573 #
574 #sub urxvt::term::scr_overlay {
575 # my ($self, \f(CW$x\fR, \f(CW$y\fR, \f(CW$text\fR) = \f(CW@_\fR;
576 #
577 # my \f(CW@lines\fR = split /\en/, \f(CW$text\fR;
578 #
579 # my \f(CW$w\fR = 0;
580 # for (map \f(CW$self\fR\->strwidth ($_), \f(CW@lines\fR) {
581 # \f(CW$w\fR = \f(CW$_\fR if \f(CW$w\fR < \f(CW$_\fR;
582 # }
583 #
584 # \f(CW$self\fR\->scr_overlay_new ($x, \f(CW$y\fR, \f(CW$w\fR, scalar \f(CW@lines\fR);
585 # \f(CW$self\fR\->scr_overlay_set (0, \f(CW$_\fR, \f(CW$lines\fR[$_]) for 0.. $#lines;
586 #}
587 .ie n .IP "$term\->overlay ($x, $y\fR, \f(CW$width\fR, \f(CW$height\fR[, \f(CW$rstyle\fR[, \f(CW$border]])" 4
588 .el .IP "$term\->overlay ($x, \f(CW$y\fR, \f(CW$width\fR, \f(CW$height\fR[, \f(CW$rstyle\fR[, \f(CW$border\fR]])" 4
589 .IX Item "$term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])"
590 Create a new (empty) overlay at the given position with the given
591 width/height. \f(CW$rstyle\fR defines the initial rendition style
592 (default: \f(CW\*(C`OVERLAY_RSTYLE\*(C'\fR).
593 .Sp
594 If \f(CW$border\fR is \f(CW2\fR (default), then a decorative border will be put
595 around the box.
596 .Sp
597 If either \f(CW$x\fR or \f(CW$y\fR is negative, then this is counted from the
598 right/bottom side, respectively.
599 .Sp
600 This method returns an urxvt::overlay object. The overlay will be visible
601 as long as the perl object is referenced.
602 .Sp
603 The methods currently supported on \f(CW\*(C`urxvt::overlay\*(C'\fR objects are:
604 .RS 4
605 .ie n .IP "$overlay\->set ($x, $y\fR, \f(CW$text\fR, \f(CW$rend)" 4
606 .el .IP "$overlay\->set ($x, \f(CW$y\fR, \f(CW$text\fR, \f(CW$rend\fR)" 4
607 .IX Item "$overlay->set ($x, $y, $text, $rend)"
608 Similar to \f(CW\*(C`$term\->ROW_t\*(C'\fR and \f(CW\*(C`$term\->ROW_r\*(C'\fR in that it puts
609 text in rxvt\-unicode's special encoding and an array of rendition values
610 at a specific position inside the overlay.
611 .IP "$overlay\->hide" 4
612 .IX Item "$overlay->hide"
613 If visible, hide the overlay, but do not destroy it.
614 .IP "$overlay\->show" 4
615 .IX Item "$overlay->show"
616 If hidden, display the overlay again.
617 .RE
618 .RS 4
619 .RE
620 .ie n .IP "$cellwidth = $term\->strwidth ($string)" 4
621 .el .IP "$cellwidth = \f(CW$term\fR\->strwidth ($string)" 4
622 .IX Item "$cellwidth = $term->strwidth ($string)"
623 Returns the number of screen-cells this string would need. Correctly
624 accounts for wide and combining characters.
625 .ie n .IP "$octets = $term\->locale_encode ($string)" 4
626 .el .IP "$octets = \f(CW$term\fR\->locale_encode ($string)" 4
627 .IX Item "$octets = $term->locale_encode ($string)"
628 Convert the given text string into the corresponding locale encoding.
629 .ie n .IP "$string = $term\->locale_decode ($octets)" 4
630 .el .IP "$string = \f(CW$term\fR\->locale_decode ($octets)" 4
631 .IX Item "$string = $term->locale_decode ($octets)"
632 Convert the given locale-encoded octets into a perl string.
633 .IP "$term\->scr_add_lines ($string)" 4
634 .IX Item "$term->scr_add_lines ($string)"
635 Write the given text string to the screen, as if output by the application
636 running inside the terminal. It may not contain command sequences (escape
637 codes), but is free to use line feeds, carriage returns and tabs. The
638 string is a normal text string, not in locale-dependent encoding.
639 .Sp
640 Normally its not a good idea to use this function, as programs might be
641 confused by changes in cursor position or scrolling. Its useful inside a
642 \&\f(CW\*(C`on_add_lines\*(C'\fR hook, though.
643 .IP "$term\->cmd_parse ($octets)" 4
644 .IX Item "$term->cmd_parse ($octets)"
645 Similar to \f(CW\*(C`scr_add_lines\*(C'\fR, but the argument must be in the
646 locale-specific encoding of the terminal and can contain command sequences
647 (escape codes) that will be interpreted.
648 .IP "$term\->tt_write ($octets)" 4
649 .IX Item "$term->tt_write ($octets)"
650 Write the octets given in \f(CW$data\fR to the tty (i.e. as program input). To
651 pass characters instead of octets, you should convert your strings first
652 to the locale-specific encoding using \f(CW\*(C`$term\->locale_encode\*(C'\fR.
653 .ie n .IP "$windowid = $term\->parent" 4
654 .el .IP "$windowid = \f(CW$term\fR\->parent" 4
655 .IX Item "$windowid = $term->parent"
656 Return the window id of the toplevel window.
657 .ie n .IP "$windowid = $term\->vt" 4
658 .el .IP "$windowid = \f(CW$term\fR\->vt" 4
659 .IX Item "$windowid = $term->vt"
660 Return the window id of the terminal window.
661 .ie n .IP "$window_width = $term\->width" 4
662 .el .IP "$window_width = \f(CW$term\fR\->width" 4
663 .IX Item "$window_width = $term->width"
664 .PD 0
665 .ie n .IP "$window_height = $term\->height" 4
666 .el .IP "$window_height = \f(CW$term\fR\->height" 4
667 .IX Item "$window_height = $term->height"
668 .ie n .IP "$font_width = $term\->fwidth" 4
669 .el .IP "$font_width = \f(CW$term\fR\->fwidth" 4
670 .IX Item "$font_width = $term->fwidth"
671 .ie n .IP "$font_height = $term\->fheight" 4
672 .el .IP "$font_height = \f(CW$term\fR\->fheight" 4
673 .IX Item "$font_height = $term->fheight"
674 .ie n .IP "$font_ascent = $term\->fbase" 4
675 .el .IP "$font_ascent = \f(CW$term\fR\->fbase" 4
676 .IX Item "$font_ascent = $term->fbase"
677 .ie n .IP "$terminal_rows = $term\->nrow" 4
678 .el .IP "$terminal_rows = \f(CW$term\fR\->nrow" 4
679 .IX Item "$terminal_rows = $term->nrow"
680 .ie n .IP "$terminal_columns = $term\->ncol" 4
681 .el .IP "$terminal_columns = \f(CW$term\fR\->ncol" 4
682 .IX Item "$terminal_columns = $term->ncol"
683 .ie n .IP "$has_focus = $term\->focus" 4
684 .el .IP "$has_focus = \f(CW$term\fR\->focus" 4
685 .IX Item "$has_focus = $term->focus"
686 .ie n .IP "$is_mapped = $term\->mapped" 4
687 .el .IP "$is_mapped = \f(CW$term\fR\->mapped" 4
688 .IX Item "$is_mapped = $term->mapped"
689 .ie n .IP "$max_scrollback = $term\->saveLines" 4
690 .el .IP "$max_scrollback = \f(CW$term\fR\->saveLines" 4
691 .IX Item "$max_scrollback = $term->saveLines"
692 .ie n .IP "$nrow_plus_saveLines = $term\->total_rows" 4
693 .el .IP "$nrow_plus_saveLines = \f(CW$term\fR\->total_rows" 4
694 .IX Item "$nrow_plus_saveLines = $term->total_rows"
695 .ie n .IP "$lines_in_scrollback = $term\->nsaved" 4
696 .el .IP "$lines_in_scrollback = \f(CW$term\fR\->nsaved" 4
697 .IX Item "$lines_in_scrollback = $term->nsaved"
698 .PD
699 Return various integers describing terminal characteristics.
700 .ie n .IP "$view_start = $term\->view_start ([$newvalue])" 4
701 .el .IP "$view_start = \f(CW$term\fR\->view_start ([$newvalue])" 4
702 .IX Item "$view_start = $term->view_start ([$newvalue])"
703 Returns the negative row number of the topmost line. Minimum value is
704 \&\f(CW0\fR, which displays the normal terminal contents. Larger values scroll
705 this many lines into the scrollback buffer.
706 .IP "$term\->want_refresh" 4
707 .IX Item "$term->want_refresh"
708 Requests a screen refresh. At the next opportunity, rxvt-unicode will
709 compare the on-screen display with its stored representation. If they
710 differ, it redraws the differences.
711 .Sp
712 Used after changing terminal contents to display them.
713 .ie n .IP "$text = $term\fR\->ROW_t ($row_number[, \f(CW$new_text\fR[, \f(CW$start_col]])" 4
714 .el .IP "$text = \f(CW$term\fR\->ROW_t ($row_number[, \f(CW$new_text\fR[, \f(CW$start_col\fR]])" 4
715 .IX Item "$text = $term->ROW_t ($row_number[, $new_text[, $start_col]])"
716 Returns the text of the entire row with number \f(CW$row_number\fR. Row \f(CW0\fR
717 is the topmost terminal line, row \f(CW\*(C`$term\->$ncol\-1\*(C'\fR is the bottommost
718 terminal line. The scrollback buffer starts at line \f(CW\*(C`\-1\*(C'\fR and extends to
719 line \f(CW\*(C`\-$term\->nsaved\*(C'\fR. Nothing will be returned if a nonexistent line
720 is requested.
721 .Sp
722 If \f(CW$new_text\fR is specified, it will replace characters in the current
723 line, starting at column \f(CW$start_col\fR (default \f(CW0\fR), which is useful
724 to replace only parts of a line. The font index in the rendition will
725 automatically be updated.
726 .Sp
727 \&\f(CW$text\fR is in a special encoding: tabs and wide characters that use more
728 than one cell when displayed are padded with urxvt::NOCHAR characters
729 (\f(CW\*(C`chr 65535\*(C'\fR). Characters with combining characters and other characters
730 that do not fit into the normal tetx encoding will be replaced with
731 characters in the private use area.
732 .Sp
733 You have to obey this encoding when changing text. The advantage is
734 that \f(CW\*(C`substr\*(C'\fR and similar functions work on screen cells and not on
735 characters.
736 .Sp
737 The methods \f(CW\*(C`$term\->special_encode\*(C'\fR and \f(CW\*(C`$term\->special_decode\*(C'\fR
738 can be used to convert normal strings into this encoding and vice versa.
739 .ie n .IP "$rend = $term\fR\->ROW_r ($row_number[, \f(CW$new_rend\fR[, \f(CW$start_col]])" 4
740 .el .IP "$rend = \f(CW$term\fR\->ROW_r ($row_number[, \f(CW$new_rend\fR[, \f(CW$start_col\fR]])" 4
741 .IX Item "$rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])"
742 Like \f(CW\*(C`$term\->ROW_t\*(C'\fR, but returns an arrayref with rendition
743 bitsets. Rendition bitsets contain information about colour, font, font
744 styles and similar information. See also \f(CW\*(C`$term\->ROW_t\*(C'\fR.
745 .Sp
746 When setting rendition, the font mask will be ignored.
747 .Sp
748 See the section on \s-1RENDITION\s0, above.
749 .ie n .IP "$length = $term\fR\->ROW_l ($row_number[, \f(CW$new_length])" 4
750 .el .IP "$length = \f(CW$term\fR\->ROW_l ($row_number[, \f(CW$new_length\fR])" 4
751 .IX Item "$length = $term->ROW_l ($row_number[, $new_length])"
752 Returns the number of screen cells that are in use (\*(L"the line
753 length\*(R"). Unlike the urxvt core, this returns \f(CW\*(C`$term\->ncol\*(C'\fR if the
754 line is joined with the following one.
755 .ie n .IP "$bool = $term\->is_longer ($row_number)" 4
756 .el .IP "$bool = \f(CW$term\fR\->is_longer ($row_number)" 4
757 .IX Item "$bool = $term->is_longer ($row_number)"
758 Returns true if the row is part of a multiple-row logical \*(L"line\*(R" (i.e.
759 joined with the following row), which means all characters are in use
760 and it is continued on the next row (and possibly a continuation of the
761 previous row(s)).
762 .ie n .IP "$line = $term\->line ($row_number)" 4
763 .el .IP "$line = \f(CW$term\fR\->line ($row_number)" 4
764 .IX Item "$line = $term->line ($row_number)"
765 Create and return a new \f(CW\*(C`urxvt::line\*(C'\fR object that stores information
766 about the logical line that row \f(CW$row_number\fR is part of. It supports the
767 following methods:
768 .RS 4
769 .ie n .IP "$text = $line\->t ([$new_text])" 4
770 .el .IP "$text = \f(CW$line\fR\->t ([$new_text])" 4
771 .IX Item "$text = $line->t ([$new_text])"
772 Returns or replaces the full text of the line, similar to \f(CW\*(C`ROW_t\*(C'\fR
773 .ie n .IP "$rend = $line\->r ([$new_rend])" 4
774 .el .IP "$rend = \f(CW$line\fR\->r ([$new_rend])" 4
775 .IX Item "$rend = $line->r ([$new_rend])"
776 Returns or replaces the full rendition array of the line, similar to \f(CW\*(C`ROW_r\*(C'\fR
777 .ie n .IP "$length = $line\->l" 4
778 .el .IP "$length = \f(CW$line\fR\->l" 4
779 .IX Item "$length = $line->l"
780 Returns the length of the line in cells, similar to \f(CW\*(C`ROW_l\*(C'\fR.
781 .ie n .IP "$rownum = $line\->beg" 4
782 .el .IP "$rownum = \f(CW$line\fR\->beg" 4
783 .IX Item "$rownum = $line->beg"
784 .PD 0
785 .ie n .IP "$rownum = $line\->end" 4
786 .el .IP "$rownum = \f(CW$line\fR\->end" 4
787 .IX Item "$rownum = $line->end"
788 .PD
789 Return the row number of the first/last row of the line, respectively.
790 .ie n .IP "$offset = $line\fR\->offset_of ($row, \f(CW$col)" 4
791 .el .IP "$offset = \f(CW$line\fR\->offset_of ($row, \f(CW$col\fR)" 4
792 .IX Item "$offset = $line->offset_of ($row, $col)"
793 Returns the character offset of the given row|col pair within the logical
794 line.
795 .ie n .IP "($row, $col\fR) = \f(CW$line\->coord_of ($offset)" 4
796 .el .IP "($row, \f(CW$col\fR) = \f(CW$line\fR\->coord_of ($offset)" 4
797 .IX Item "($row, $col) = $line->coord_of ($offset)"
798 Translates a string offset into terminal coordinates again.
799 .RE
800 .RS 4
801 .RE
802 .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
803 .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$string\fR" 4
804 .IX Item "($row, $col) = $line->coord_of ($offset) =item $text = $term->special_encode $string"
805 Converts a perl string into the special encoding used by rxvt\-unicode,
806 where one character corresponds to one screen cell. See
807 \&\f(CW\*(C`$term\->ROW_t\*(C'\fR for details.
808 .ie n .IP "$string = $term\fR\->special_decode \f(CW$text" 4
809 .el .IP "$string = \f(CW$term\fR\->special_decode \f(CW$text\fR" 4
810 .IX Item "$string = $term->special_decode $text"
811 Converts rxvt-unicodes text reprsentation into a perl string. See
812 \&\f(CW\*(C`$term\->ROW_t\*(C'\fR for details.
813 .ie n .Sh "The ""urxvt::timer"" Class"
814 .el .Sh "The \f(CWurxvt::timer\fP Class"
815 .IX Subsection "The urxvt::timer Class"
816 This class implements timer watchers/events. Time is represented as a
817 fractional number of seconds since the epoch. Example:
818 .PP
819 .Vb 8
820 \& $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
821 \& $term->{timer} = urxvt::timer
822 \& ->new
823 \& ->interval (1)
824 \& ->cb (sub {
825 \& $term->{overlay}->set (0, 0,
826 \& sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
827 \& });
828 .Ve
829 .IP "$timer = new urxvt::timer" 4
830 .IX Item "$timer = new urxvt::timer"
831 Create a new timer object in started state. It is scheduled to fire
832 immediately.
833 .ie n .IP "$timer = $timer\fR\->cb (sub { my ($timer) = \f(CW@_; ... })" 4
834 .el .IP "$timer = \f(CW$timer\fR\->cb (sub { my ($timer) = \f(CW@_\fR; ... })" 4
835 .IX Item "$timer = $timer->cb (sub { my ($timer) = @_; ... })"
836 Set the callback to be called when the timer triggers.
837 .ie n .IP "$tstamp = $timer\->at" 4
838 .el .IP "$tstamp = \f(CW$timer\fR\->at" 4
839 .IX Item "$tstamp = $timer->at"
840 Return the time this watcher will fire next.
841 .ie n .IP "$timer = $timer\->set ($tstamp)" 4
842 .el .IP "$timer = \f(CW$timer\fR\->set ($tstamp)" 4
843 .IX Item "$timer = $timer->set ($tstamp)"
844 Set the time the event is generated to \f(CW$tstamp\fR.
845 .ie n .IP "$timer = $timer\->interval ($interval)" 4
846 .el .IP "$timer = \f(CW$timer\fR\->interval ($interval)" 4
847 .IX Item "$timer = $timer->interval ($interval)"
848 Normally (and when \f(CW$interval\fR is \f(CW0\fR), the timer will automatically
849 stop after it has fired once. If \f(CW$interval\fR is non\-zero, then the timer
850 is automatically rescheduled at the given intervals.
851 .ie n .IP "$timer = $timer\->start" 4
852 .el .IP "$timer = \f(CW$timer\fR\->start" 4
853 .IX Item "$timer = $timer->start"
854 Start the timer.
855 .ie n .IP "$timer = $timer\->start ($tstamp)" 4
856 .el .IP "$timer = \f(CW$timer\fR\->start ($tstamp)" 4
857 .IX Item "$timer = $timer->start ($tstamp)"
858 Set the event trigger time to \f(CW$tstamp\fR and start the timer.
859 .ie n .IP "$timer = $timer\->stop" 4
860 .el .IP "$timer = \f(CW$timer\fR\->stop" 4
861 .IX Item "$timer = $timer->stop"
862 Stop the timer.
863 .ie n .Sh "The ""urxvt::iow"" Class"
864 .el .Sh "The \f(CWurxvt::iow\fP Class"
865 .IX Subsection "The urxvt::iow Class"
866 This class implements io watchers/events. Example:
867 .PP
868 .Vb 12
869 \& $term->{socket} = ...
870 \& $term->{iow} = urxvt::iow
871 \& ->new
872 \& ->fd (fileno $term->{socket})
873 \& ->events (1) # wait for read data
874 \& ->start
875 \& ->cb (sub {
876 \& my ($iow, $revents) = @_;
877 \& # $revents must be 1 here, no need to check
878 \& sysread $term->{socket}, my $buf, 8192
879 \& or end-of-file;
880 \& });
881 .Ve
882 .IP "$iow = new urxvt::iow" 4
883 .IX Item "$iow = new urxvt::iow"
884 Create a new io watcher object in stopped state.
885 .ie n .IP "$iow = $iow\fR\->cb (sub { my ($iow, \f(CW$reventmask\fR) = \f(CW@_; ... })" 4
886 .el .IP "$iow = \f(CW$iow\fR\->cb (sub { my ($iow, \f(CW$reventmask\fR) = \f(CW@_\fR; ... })" 4
887 .IX Item "$iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... })"
888 Set the callback to be called when io events are triggered. \f(CW$reventmask\fR
889 is a bitset as described in the \f(CW\*(C`events\*(C'\fR method.
890 .ie n .IP "$iow = $iow\->fd ($fd)" 4
891 .el .IP "$iow = \f(CW$iow\fR\->fd ($fd)" 4
892 .IX Item "$iow = $iow->fd ($fd)"
893 Set the filedescriptor (not handle) to watch.
894 .ie n .IP "$iow = $iow\->events ($eventmask)" 4
895 .el .IP "$iow = \f(CW$iow\fR\->events ($eventmask)" 4
896 .IX Item "$iow = $iow->events ($eventmask)"
897 Set the event mask to watch. Bit #0 (value \f(CW1\fR) enables watching for read
898 data, Bit #1 (value \f(CW2\fR) enables watching for write data.
899 .ie n .IP "$iow = $iow\->start" 4
900 .el .IP "$iow = \f(CW$iow\fR\->start" 4
901 .IX Item "$iow = $iow->start"
902 Start watching for requested events on the given handle.
903 .ie n .IP "$iow = $iow\->stop" 4
904 .el .IP "$iow = \f(CW$iow\fR\->stop" 4
905 .IX Item "$iow = $iow->stop"
906 Stop watching for events on the given filehandle.
907 .SH "ENVIRONMENT"
908 .IX Header "ENVIRONMENT"
909 .Sh "\s-1URXVT_PERL_VERBOSITY\s0"
910 .IX Subsection "URXVT_PERL_VERBOSITY"
911 This variable controls the verbosity level of the perl extension. Higher
912 numbers indicate more verbose output.
913 .IP "=0 \- only fatal messages" 4
914 .IX Item "=0 - only fatal messages"
915 .PD 0
916 .IP "=3 \- script loading and management" 4
917 .IX Item "=3 - script loading and management"
918 .IP "=10 \- all events received" 4
919 .IX Item "=10 - all events received"
920 .PD
921 .SH "AUTHOR"
922 .IX Header "AUTHOR"
923 .Vb 2
924 \& Marc Lehmann <pcg@goof.com>
925 \& http://software.schmorp.de/pkg/rxvt-unicode
926 .Ve