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Revision 1.1 by root, Mon Jan 2 19:36:07 2006 UTC vs.
Revision 1.14 by root, Sun Jan 8 06:35:38 2006 UTC

1NAME 1NAME
2 rxvtperl - rxvt-unicode's embedded perl interpreter 2 rxvtperl - rxvt-unicode's embedded perl interpreter
3 3
4SYNOPSIS 4SYNOPSIS
5 * Put your scripts into /opt/rxvt/lib/urxvt/perl-ext/, they will be 5 # create a file grab_test in $HOME:
6 loaded automatically.
7
8 * Scripts are evaluated in a 'use strict' and 'use utf8' environment,
9 and thus must be encoded as UTF-8.
10 6
11 sub on_sel_grab { 7 sub on_sel_grab {
12 warn "you selected ", $_[0]->selection; 8 warn "you selected ", $_[0]->selection;
13 () 9 ()
14 } 10 }
15 11
16 1 12 # start a rxvt using it:
13
14 rxvt --perl-lib $HOME -pe grab_test
17 15
18DESCRIPTION 16DESCRIPTION
19 On startup, rxvt will scan /opt/rxvt/lib/urxvt/perl-ext/ for files and 17 Everytime a terminal object gets created, extension scripts specified
20 will load them. Everytime a terminal object gets created, the directory 18 via the "perl" resource are loaded and associated with it.
21 specified by the "perl-lib" resource will be additionally scanned. 19
20 Scripts are compiled in a 'use strict' and 'use utf8' environment, and
21 thus must be encoded as UTF-8.
22 22
23 Each script will only ever be loaded once, even in rxvtd, where scripts 23 Each script will only ever be loaded once, even in rxvtd, where scripts
24 will be shared for all terminals. 24 will be shared (but not enabled) for all terminals.
25 25
26 Hooks in scripts specified by "perl-lib" will only be called for the 26 Prepackaged Extensions
27 terminals created with that specific option value. 27 This section describes the extensiosn delivered with this version. You
28 can find them in /opt/rxvt/lib/urxvt/perl/.
29
30 You can activate them like this:
31
32 rxvt -pe <extensionname>
33
34 selection (enabled by default)
35 Intelligent selection. This extension tries to be more intelligent
36 when the user extends selections (double-click). Right now, it tries
37 to select urls and complete shell-quoted arguments, which is very
38 convenient, too, if your ls supports "--quoting-style=shell".
39
40 It also offers the following bindable event:
41
42 rot13
43 Rot-13 the selection when activated. Used via keyboard trigger:
44
45 URxvt.keysym.C-M-r: perl:selection:rot13
46
47 option-popup (enabled by default)
48 Binds a popup menu to Ctrl-Button3 that lets you toggle (some)
49 options at runtime.
50
51 digital-clock
52 Displays a digital clock using the built-in overlay.
53
54 mark-urls
55 Uses per-line display filtering ("on_line_update") to underline
56 urls.
57
58 block-graphics-to-ascii
59 A not very useful example of filtering all text output to the
60 terminal, by replacing all line-drawing characters (U+2500 ..
61 U+259F) by a similar-looking ascii character.
62
63 example-refresh-hooks
64 Displays a very simple digital clock in the upper right corner of
65 the window. Illustrates overwriting the refresh callbacks to create
66 your own overlays or changes.
28 67
29 General API Considerations 68 General API Considerations
30 All objects (such as terminals, time watchers etc.) are typical 69 All objects (such as terminals, time watchers etc.) are typical
31 reference-to-hash objects. The hash can be used to store anything you 70 reference-to-hash objects. The hash can be used to store anything you
32 like. All members starting with an underscore (such as "_ptr" or 71 like. All members starting with an underscore (such as "_ptr" or
33 "_hook") are reserved for internal uses and must not be accessed or 72 "_hook") are reserved for internal uses and MUST NOT be accessed or
34 modified). 73 modified).
35 74
36 When objects are destroyed on the C++ side, the perl object hashes are 75 When objects are destroyed on the C++ side, the perl object hashes are
37 emptied, so its best to store related objects such as time watchers and 76 emptied, so its best to store related objects such as time watchers and
38 the like inside the terminal object so they get destroyed as soon as the 77 the like inside the terminal object so they get destroyed as soon as the
39 terminal is destroyed. 78 terminal is destroyed.
40 79
80 Argument names also often indicate the type of a parameter. Here are
81 some hints on what they mean:
82
83 $text
84 Rxvt-unicodes special way of encoding text, where one "unicode"
85 character always represents one screen cell. See row_t for a
86 discussion of this format.
87
88 $string
89 A perl text string, with an emphasis on *text*. It can store all
90 unicode characters and is to be distinguished with text encoded in a
91 specific encoding (often locale-specific) and binary data.
92
93 $octets
94 Either binary data or - more common - a text string encoded in a
95 locale-specific way.
96
41 Hooks 97 Hooks
42 The following subroutines can be declared in loaded scripts, and will be 98 The following subroutines can be declared in extension files, and will
43 called whenever the relevant event happens. 99 be called whenever the relevant event happens.
100
101 The first argument passed to them is an object private to each terminal
102 and extension package. You can call all "urxvt::term" methods on it, but
103 its not a real "urxvt::term" object. Instead, the real "urxvt::term"
104 object that is shared between all packages is stored in the "term"
105 member. It is, however, blessed intot he package of the extension
106 script, so for all practical purposes you can treat an extension script
107 as a class.
44 108
45 All of them must return a boolean value. If it is true, then the event 109 All of them must return a boolean value. If it is true, then the event
46 counts as being *consumed*, and the invocation of other hooks is 110 counts as being *consumed*, and the invocation of other hooks is
47 skipped, and the relevant action might not be carried out by the C++ 111 skipped, and the relevant action might not be carried out by the C++
48 code. 112 code.
49 113
50 When in doubt, return a false value (preferably "()"). 114 When in doubt, return a false value (preferably "()").
51 115
52 on_init $term 116 on_init $term
53 Called after a new terminal object has been initialized, but before 117 Called after a new terminal object has been initialized, but before
54 windows are created or the command gets run. 118 windows are created or the command gets run. Most methods are unsafe
119 to call or deliver senseless data, as terminal size and other
120 characteristics have not yet been determined. You can safely query
121 and change resources, though.
55 122
56 on_reset $term 123 on_reset $term
57 Called after the screen is "reset" for any reason, such as resizing 124 Called after the screen is "reset" for any reason, such as resizing
58 or control sequences. Here is where you can react on changes to 125 or control sequences. Here is where you can react on changes to
59 size-related variables. 126 size-related variables.
77 queried and changed by calling "$term->selection". 144 queried and changed by calling "$term->selection".
78 145
79 Returning a true value aborts selection grabbing. It will still be 146 Returning a true value aborts selection grabbing. It will still be
80 hilighted. 147 hilighted.
81 148
82 on_focus_in $term 149 on_sel_extend $term
83 Called whenever the window gets the keyboard focus, before urxvt 150 Called whenever the user tries to extend the selection (e.g. with a
84 does focus in processing. 151 double click) and is either supposed to return false (normal
152 operation), or should extend the selection itelf and return true to
153 suppress the built-in processing.
85 154
86 on_focus_out $term 155 See the selection example extension.
87 Called wheneever the window loses keyboard focus, before urxvt does
88 focus out processing.
89 156
90 on_view_change $term, $offset 157 on_view_change $term, $offset
91 Called whenever the view offset changes, i..e the user or program 158 Called whenever the view offset changes, i..e the user or program
92 scrolls. Offset 0 means display the normal terminal, positive values 159 scrolls. Offset 0 means display the normal terminal, positive values
93 show this many lines of scrollback. 160 show this many lines of scrollback.
102 the total number of lines that will be in the scrollback buffer. 169 the total number of lines that will be in the scrollback buffer.
103 170
104 on_tty_activity $term *NYI* 171 on_tty_activity $term *NYI*
105 Called whenever the program(s) running in the urxvt window send 172 Called whenever the program(s) running in the urxvt window send
106 output. 173 output.
174
175 on_osc_seq $term, $string
176 Called whenever the ESC ] 777 ; string ST command sequence (OSC =
177 operating system command) is processed. Cursor position and other
178 state information is up-to-date when this happens. For
179 interoperability, the string should start with the extension name
180 and a colon, to distinguish it from commands for other extensions,
181 and this might be enforced in the future.
182
183 Be careful not ever to trust (in a security sense) the data you
184 receive, as its source can not easily be controleld (e-mail content,
185 messages from other users on the same system etc.).
186
187 on_add_lines $term, $string
188 Called whenever text is about to be output, with the text as
189 argument. You can filter/change and output the text yourself by
190 returning a true value and calling "$term->scr_add_lines" yourself.
191 Please note that this might be very slow, however, as your hook is
192 called for all text being output.
193
194 on_line_update $term, $row
195 Called whenever a line was updated or changed. Can be used to filter
196 screen output (e.g. underline urls or other useless stuff). Only
197 lines that are being shown will be filtered, and, due to performance
198 reasons, not always immediately.
199
200 The row number is always the topmost row of the line if the line
201 spans multiple rows.
202
203 Please note that, if you change the line, then the hook might get
204 called later with the already-modified line (e.g. if unrelated parts
205 change), so you cannot just toggle rendition bits, but only set
206 them.
107 207
108 on_refresh_begin $term 208 on_refresh_begin $term
109 Called just before the screen gets redrawn. Can be used for overlay 209 Called just before the screen gets redrawn. Can be used for overlay
110 or similar effects by modify terminal contents in refresh_begin, and 210 or similar effects by modify terminal contents in refresh_begin, and
111 restoring them in refresh_end. The built-in overlay and selection 211 restoring them in refresh_end. The built-in overlay and selection
112 display code is run after this hook, and takes precedence. 212 display code is run after this hook, and takes precedence.
113 213
114 on_refresh_end $term 214 on_refresh_end $term
115 Called just after the screen gets redrawn. See "on_refresh_begin". 215 Called just after the screen gets redrawn. See "on_refresh_begin".
116 216
217 on_keyboard_command $term, $string
218 Called whenever the user presses a key combination that has a
219 "perl:string" action bound to it (see description of the keysym
220 resource in the rxvt(1) manpage).
221
222 on_focus_in $term
223 Called whenever the window gets the keyboard focus, before
224 rxvt-unicode does focus in processing.
225
226 on_focus_out $term
227 Called wheneever the window loses keyboard focus, before
228 rxvt-unicode does focus out processing.
229
230 on_key_press $term, $event, $octets
231 on_key_release $term, $event
232 on_button_press $term, $event
233 on_button_release $term, $event
234 on_motion_notify $term, $event
235 on_map_notify $term, $event
236 on_unmap_notify $term, $event
237 Called whenever the corresponding X event is received for the
238 terminal If the hook returns true, then the even will be ignored by
239 rxvt-unicode.
240
241 The event is a hash with most values as named by Xlib (see the
242 XEvent manpage), with the additional members "row" and "col", which
243 are the row and column under the mouse cursor.
244
245 "on_key_press" additionally receives the string rxvt-unicode would
246 output, if any, in locale-specific encoding.
247
248 subwindow.
249
250 Variables in the "urxvt" Package
251 $urxvt::TERM
252 The current terminal. This variable stores the current "urxvt::term"
253 object, whenever a callback/hook is executing.
254
117 Functions in the "urxvt" Package 255 Functions in the "urxvt" Package
256 $term = new urxvt [arg...]
257 Creates a new terminal, very similar as if you had started it with
258 "system $binfile, arg...". Croaks (and probably outputs an error
259 message) if the new instance couldn't be created. Returns "undef" if
260 the new instance didn't initialise perl, and the terminal object
261 otherwise. The "init" and "start" hooks will be called during the
262 call.
263
118 urxvt::fatal $errormessage 264 urxvt::fatal $errormessage
119 Fatally aborts execution with the given error message. Avoid at all 265 Fatally aborts execution with the given error message. Avoid at all
120 costs! The only time this is acceptable is when the terminal process 266 costs! The only time this is acceptable is when the terminal process
121 starts up. 267 starts up.
122 268
129 correct place, e.g. on stderr of the connecting urxvtc client. 275 correct place, e.g. on stderr of the connecting urxvtc client.
130 276
131 $time = urxvt::NOW 277 $time = urxvt::NOW
132 Returns the "current time" (as per the event loop). 278 Returns the "current time" (as per the event loop).
133 279
280 urxvt::CurrentTime
281 urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask, Mod3Mask,
282 Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask, Button4Mask,
283 Button5Mask, AnyModifier
284 Various constants for use in X calls and event processing.
285
286 RENDITION
287 Rendition bitsets contain information about colour, font, font styles
288 and similar information for each screen cell.
289
290 The following "macros" deal with changes in rendition sets. You should
291 never just create a bitset, you should always modify an existing one, as
292 they contain important information required for correct operation of
293 rxvt-unicode.
294
295 $rend = urxvt::DEFAULT_RSTYLE
296 Returns the default rendition, as used when the terminal is starting
297 up or being reset. Useful as a base to start when creating
298 renditions.
299
300 $rend = urxvt::OVERLAY_RSTYLE
301 Return the rendition mask used for overlays by default.
302
303 $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline
304 Return the bit that enabled bold, italic, blink, reverse-video and
305 underline, respectively. To enable such a style, just logically OR
306 it into the bitset.
307
308 $foreground = urxvt::GET_BASEFG $rend
309 $background = urxvt::GET_BASEBG $rend
310 Return the foreground/background colour index, respectively.
311
312 $rend = urxvt::SET_FGCOLOR ($rend, $new_colour)
313 $rend = urxvt::SET_BGCOLOR ($rend, $new_colour)
314 Replace the foreground/background colour in the rendition mask with
315 the specified one.
316
317 $value = urxvt::GET_CUSTOM ($rend)
318 Return the "custom" value: Every rendition has 5 bits for use by
319 extensions. They can be set and changed as you like and are
320 initially zero.
321
322 $rend = urxvt::SET_CUSTOM ($rend, $new_value)
323 Change the custom value.
324
325 The "urxvt::anyevent" Class
326 The sole purpose of this class is to deliver an interface to the
327 "AnyEvent" module - any module using it will work inside urxvt without
328 further work. The only exception is that you cannot wait on condition
329 variables, but non-blocking condvar use is ok. What this means is that
330 you cannot use blocking APIs, but the non-blocking variant should work.
331
134 The "urxvt::term" Class 332 The "urxvt::term" Class
333 $term->destroy
334 Destroy the terminal object (close the window, free resources etc.).
335
336 $isset = $term->option ($optval[, $set])
337 Returns true if the option specified by $optval is enabled, and
338 optionally change it. All option values are stored by name in the
339 hash %urxvt::OPTION. Options not enabled in this binary are not in
340 the hash.
341
342 Here is a a likely non-exhaustive list of option names, please see
343 the source file /src/optinc.h to see the actual list:
344
345 borderLess console cursorBlink cursorUnderline hold iconic insecure
346 intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage
347 pastableTabs pointerBlank reverseVideo scrollBar scrollBar_floating
348 scrollBar_right scrollTtyKeypress scrollTtyOutput scrollWithBuffer
349 secondaryScreen secondaryScroll skipBuiltinGlyphs transparent
350 tripleclickwords utmpInhibit visualBell
351
135 $value = $term->resource ($name[, $newval]) 352 $value = $term->resource ($name[, $newval])
136 Returns the current resource value associated with a given name and 353 Returns the current resource value associated with a given name and
137 optionally sets a new value. Setting values is most useful in the 354 optionally sets a new value. Setting values is most useful in the
138 "init" hook. Unset resources are returned and accepted as "undef". 355 "init" hook. Unset resources are returned and accepted as "undef".
139 356
148 Please note that resource strings will currently only be freed when 365 Please note that resource strings will currently only be freed when
149 the terminal is destroyed, so changing options frequently will eat 366 the terminal is destroyed, so changing options frequently will eat
150 memory. 367 memory.
151 368
152 Here is a a likely non-exhaustive list of resource names, not all of 369 Here is a a likely non-exhaustive list of resource names, not all of
153 which are supported in every build, please see the source to see the 370 which are supported in every build, please see the source file
154 actual list: 371 /src/rsinc.h to see the actual list:
155 372
156 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont 373 answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont
157 borderLess color cursorBlink cursorUnderline cutchars delete_key 374 borderLess color cursorBlink cursorUnderline cutchars delete_key
158 display_name embed ext_bwidth fade font geometry hold iconName 375 display_name embed ext_bwidth fade font geometry hold iconName
159 imFont imLocale inputMethod insecure int_bwidth intensityStyles 376 imFont imLocale inputMethod insecure int_bwidth intensityStyles
160 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 377 italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier
161 modifier mouseWheelScrollPage name pastableTabs path perl perl_eval 378 mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2
162 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd 379 perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd
163 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating 380 reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating
164 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput 381 scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput
165 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle 382 scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle
166 shade term_name title transparent transparent_all tripleclickwords 383 shade term_name title transparent transparent_all tripleclickwords
167 utmpInhibit visualBell 384 utmpInhibit visualBell
168 385
386 $rend = $term->rstyle ([$new_rstyle])
387 Return and optionally change the current rendition. Text that is
388 output by the terminal application will use this style.
389
390 ($row, $col) = $term->screen_cur ([$row, $col])
391 Return the current coordinates of the text cursor position and
392 optionally set it (which is usually bad as applications don't expect
393 that).
394
169 ($row, $col) = $term->selection_mark ([$row, $col]) 395 ($row, $col) = $term->selection_mark ([$row, $col])
170 ($row, $col) = $term->selection_beg ([$row, $col]) 396 ($row, $col) = $term->selection_beg ([$row, $col])
171 ($row, $col) = $term->selection_end ([$row, $col]) 397 ($row, $col) = $term->selection_end ([$row, $col])
172 Return the current values of the selection mark, begin or end 398 Return the current values of the selection mark, begin or end
173 positions, and optionally set them to new values. 399 positions, and optionally set them to new values.
178 404
179 $oldtext = $term->selection ([$newtext]) 405 $oldtext = $term->selection ([$newtext])
180 Return the current selection text and optionally replace it by 406 Return the current selection text and optionally replace it by
181 $newtext. 407 $newtext.
182 408
183 $term->scr_overlay ($x, $y, $text) 409 #=item $term->overlay ($x, $y, $text) # #Create a simple multi-line
184 Create a simple multi-line overlay box. See the next method for 410 overlay box. See the next method for details. # #=cut # #sub
185 details. 411 urxvt::term::scr_overlay { # my ($self, $x, $y, $text) = @_; # # my
412 @lines = split /\n/, $text; # # my $w = 0; # for (map
413 $self->strwidth ($_), @lines) { # $w = $_ if $w < $_; # } # #
414 $self->scr_overlay_new ($x, $y, $w, scalar @lines); #
415 $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines; #}
186 416
187 $term->scr_overlay_new ($x, $y, $width, $height) 417 $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
188 Create a new (empty) overlay at the given position with the given 418 Create a new (empty) overlay at the given position with the given
189 width/height. A border will be put around the box. If either $x or 419 width/height. $rstyle defines the initial rendition style (default:
420 "OVERLAY_RSTYLE").
421
422 If $border is 2 (default), then a decorative border will be put
423 around the box.
424
190 $y is negative, then this is counted from the right/bottom side, 425 If either $x or $y is negative, then this is counted from the
191 respectively. 426 right/bottom side, respectively.
192 427
193 $term->scr_overlay_off 428 This method returns an urxvt::overlay object. The overlay will be
194 Switch the overlay off again. 429 visible as long as the perl object is referenced.
195 430
196 $term->scr_overlay_set_char ($x, $y, $char, $rend = OVERLAY_RSTYLE) 431 The methods currently supported on "urxvt::overlay" objects are:
197 Put a single character (specified numerically) at the given overlay
198 position.
199 432
200 $term->scr_overlay_set ($x, $y, $text) 433 $overlay->set ($x, $y, $text, $rend)
201 Write a string at the given position into the overlay. 434 Similar to "$term->ROW_t" and "$term->ROW_r" in that it puts
435 text in rxvt-unicode's special encoding and an array of
436 rendition values at a specific position inside the overlay.
202 437
438 $overlay->hide
439 If visible, hide the overlay, but do not destroy it.
440
441 $overlay->show
442 If hidden, display the overlay again.
443
444 $popup = $term->popup ($event)
445 Creates a new "urxvt::popup" object that implements a popup menu.
446 The $event *must* be the event causing the menu to pop up (a button
447 event, currently).
448
203 $cellwidth = $term->strwidth $string 449 $cellwidth = $term->strwidth ($string)
204 Returns the number of screen-cells this string would need. Correctly 450 Returns the number of screen-cells this string would need. Correctly
205 accounts for wide and combining characters. 451 accounts for wide and combining characters.
206 452
207 $octets = $term->locale_encode $string 453 $octets = $term->locale_encode ($string)
208 Convert the given text string into the corresponding locale 454 Convert the given text string into the corresponding locale
209 encoding. 455 encoding.
210 456
211 $string = $term->locale_decode $octets 457 $string = $term->locale_decode ($octets)
212 Convert the given locale-encoded octets into a perl string. 458 Convert the given locale-encoded octets into a perl string.
459
460 $term->scr_add_lines ($string)
461 Write the given text string to the screen, as if output by the
462 application running inside the terminal. It may not contain command
463 sequences (escape codes), but is free to use line feeds, carriage
464 returns and tabs. The string is a normal text string, not in
465 locale-dependent encoding.
466
467 Normally its not a good idea to use this function, as programs might
468 be confused by changes in cursor position or scrolling. Its useful
469 inside a "on_add_lines" hook, though.
470
471 $term->cmd_parse ($octets)
472 Similar to "scr_add_lines", but the argument must be in the
473 locale-specific encoding of the terminal and can contain command
474 sequences (escape codes) that will be interpreted.
213 475
214 $term->tt_write ($octets) 476 $term->tt_write ($octets)
215 Write the octets given in $data to the tty (i.e. as program input). 477 Write the octets given in $data to the tty (i.e. as program input).
216 To pass characters instead of octets, you should convetr you strings 478 To pass characters instead of octets, you should convert your
217 first to the locale-specific encoding using "$term->locale_encode". 479 strings first to the locale-specific encoding using
480 "$term->locale_encode".
218 481
482 $windowid = $term->parent
483 Return the window id of the toplevel window.
484
485 $windowid = $term->vt
486 Return the window id of the terminal window.
487
488 $window_width = $term->width
489 $window_height = $term->height
490 $font_width = $term->fwidth
491 $font_height = $term->fheight
492 $font_ascent = $term->fbase
493 $terminal_rows = $term->nrow
494 $terminal_columns = $term->ncol
495 $has_focus = $term->focus
496 $is_mapped = $term->mapped
497 $max_scrollback = $term->saveLines
498 $nrow_plus_saveLines = $term->total_rows
499 $lines_in_scrollback = $term->nsaved
500 Return various integers describing terminal characteristics.
501
502 $modifiermask = $term->ModLevel3Mask
503 $modifiermask = $term->ModMetaMask
504 $modifiermask = $term->ModNumLockMask
505 Return the modifier masks corresponding to the "ISO Level 3 Shift"
506 (often AltGr), the meta key (often Alt) and the num lock key, if
507 applicable.
508
509 $view_start = $term->view_start ([$newvalue])
510 Returns the negative row number of the topmost line. Minimum value
511 is 0, which displays the normal terminal contents. Larger values
512 scroll this many lines into the scrollback buffer.
513
514 $term->want_refresh
515 Requests a screen refresh. At the next opportunity, rxvt-unicode
516 will compare the on-screen display with its stored representation.
517 If they differ, it redraws the differences.
518
519 Used after changing terminal contents to display them.
520
521 $text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
522 Returns the text of the entire row with number $row_number. Row 0 is
523 the topmost terminal line, row "$term->$ncol-1" is the bottommost
524 terminal line. The scrollback buffer starts at line -1 and extends
525 to line "-$term->nsaved". Nothing will be returned if a nonexistent
526 line is requested.
527
528 If $new_text is specified, it will replace characters in the current
529 line, starting at column $start_col (default 0), which is useful to
530 replace only parts of a line. The font index in the rendition will
531 automatically be updated.
532
533 $text is in a special encoding: tabs and wide characters that use
534 more than one cell when displayed are padded with urxvt::NOCHAR
535 characters ("chr 65535"). Characters with combining characters and
536 other characters that do not fit into the normal tetx encoding will
537 be replaced with characters in the private use area.
538
539 You have to obey this encoding when changing text. The advantage is
540 that "substr" and similar functions work on screen cells and not on
541 characters.
542
543 The methods "$term->special_encode" and "$term->special_decode" can
544 be used to convert normal strings into this encoding and vice versa.
545
546 $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
547 Like "$term->ROW_t", but returns an arrayref with rendition bitsets.
548 Rendition bitsets contain information about colour, font, font
549 styles and similar information. See also "$term->ROW_t".
550
551 When setting rendition, the font mask will be ignored.
552
553 See the section on RENDITION, above.
554
555 $length = $term->ROW_l ($row_number[, $new_length])
556 Returns the number of screen cells that are in use ("the line
557 length"). Unlike the urxvt core, this returns "$term->ncol" if the
558 line is joined with the following one.
559
560 $bool = $term->is_longer ($row_number)
561 Returns true if the row is part of a multiple-row logical "line"
562 (i.e. joined with the following row), which means all characters are
563 in use and it is continued on the next row (and possibly a
564 continuation of the previous row(s)).
565
566 $line = $term->line ($row_number)
567 Create and return a new "urxvt::line" object that stores information
568 about the logical line that row $row_number is part of. It supports
569 the following methods:
570
571 $text = $line->t ([$new_text])
572 Returns or replaces the full text of the line, similar to
573 "ROW_t"
574
575 $rend = $line->r ([$new_rend])
576 Returns or replaces the full rendition array of the line,
577 similar to "ROW_r"
578
579 $length = $line->l
580 Returns the length of the line in cells, similar to "ROW_l".
581
582 $rownum = $line->beg
583 $rownum = $line->end
584 Return the row number of the first/last row of the line,
585 respectively.
586
587 $offset = $line->offset_of ($row, $col)
588 Returns the character offset of the given row|col pair within
589 the logical line.
590
591 ($row, $col) = $line->coord_of ($offset)
592 Translates a string offset into terminal coordinates again.
593
594 ($row, $col) = $line->coord_of ($offset) =item $text =
595 $term->special_encode $string
596 Converts a perl string into the special encoding used by
597 rxvt-unicode, where one character corresponds to one screen cell.
598 See "$term->ROW_t" for details.
599
600 $string = $term->special_decode $text
601 Converts rxvt-unicodes text reprsentation into a perl string. See
602 "$term->ROW_t" for details.
603
604 The "urxvt::popup" Class
219 The "urxvt::timer" Class 605 The "urxvt::timer" Class
220 This class implements timer watchers/events. Time is represented as a 606 This class implements timer watchers/events. Time is represented as
221 fractional number of seconds since the epoch. Example: 607 a fractional number of seconds since the epoch. Example:
222 608
223 # create a digital clock display in upper right corner 609 $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
224 $term->{timer} = urxvt::timer 610 $term->{timer} = urxvt::timer
225 ->new 611 ->new
226 ->start (urxvt::NOW) 612 ->interval (1)
227 ->cb (sub { 613 ->cb (sub {
228 my ($timer) = @_;
229 my $time = $timer->at;
230 $timer->start ($time + 1);
231 $self->scr_overlay (-1, 0, 614 $term->{overlay}->set (0, 0,
232 POSIX::strftime "%H:%M:%S", localtime $time); 615 sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
233 }); 616 });
234 617
235 $timer = new urxvt::timer 618 $timer = new urxvt::timer
236 Create a new timer object in stopped state. 619 Create a new timer object in started state. It is scheduled to
620 fire immediately.
237 621
238 $timer = $timer->cb (sub { my ($timer) = @_; ... }) 622 $timer = $timer->cb (sub { my ($timer) = @_; ... })
239 Set the callback to be called when the timer triggers. 623 Set the callback to be called when the timer triggers.
240 624
241 $tstamp = $timer->at 625 $tstamp = $timer->at
242 Return the time this watcher will fire next. 626 Return the time this watcher will fire next.
243 627
244 $timer = $timer->set ($tstamp) 628 $timer = $timer->set ($tstamp)
245 Set the time the event is generated to $tstamp. 629 Set the time the event is generated to $tstamp.
246 630
631 $timer = $timer->interval ($interval)
632 Normally (and when $interval is 0), the timer will automatically
633 stop after it has fired once. If $interval is non-zero, then the
634 timer is automatically rescheduled at the given intervals.
635
247 $timer = $timer->start 636 $timer = $timer->start
248 Start the timer. 637 Start the timer.
249 638
250 $timer = $timer->start ($tstamp) 639 $timer = $timer->start ($tstamp)
251 Set the event trigger time to $tstamp and start the timer. 640 Set the event trigger time to $tstamp and start the timer.
252 641
253 $timer = $timer->stop 642 $timer = $timer->stop
254 Stop the timer. 643 Stop the timer.
255 644
256 The "urxvt::iow" Class 645 The "urxvt::iow" Class
257 This class implements io watchers/events. Example: 646 This class implements io watchers/events. Example:
258 647
259 $term->{socket} = ... 648 $term->{socket} = ...
260 $term->{iow} = urxvt::iow 649 $term->{iow} = urxvt::iow
261 ->new 650 ->new
262 ->fd (fileno $term->{socket}) 651 ->fd (fileno $term->{socket})
263 ->events (1) # wait for read data 652 ->events (1) # wait for read data
264 ->start 653 ->start
265 ->cb (sub { 654 ->cb (sub {
266 my ($iow, $revents) = @_; 655 my ($iow, $revents) = @_;
267 # $revents must be 1 here, no need to check 656 # $revents must be 1 here, no need to check
268 sysread $term->{socket}, my $buf, 8192 657 sysread $term->{socket}, my $buf, 8192
269 or end-of-file; 658 or end-of-file;
270 }); 659 });
271 660
272 $iow = new urxvt::iow 661 $iow = new urxvt::iow
273 Create a new io watcher object in stopped state. 662 Create a new io watcher object in stopped state.
274 663
275 $iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... }) 664 $iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... })
276 Set the callback to be called when io events are triggered. 665 Set the callback to be called when io events are triggered.
277 $reventmask is a bitset as described in the "events" method. 666 $reventmask is a bitset as described in the "events" method.
278 667
279 $iow = $iow->fd ($fd) 668 $iow = $iow->fd ($fd)
280 Set the filedescriptor (not handle) to watch. 669 Set the filedescriptor (not handle) to watch.
281 670
282 $iow = $iow->events ($eventmask) 671 $iow = $iow->events ($eventmask)
283 Set the event mask to watch. Bit #0 (value 1) enables watching for 672 Set the event mask to watch. Bit #0 (value 1) enables watching
284 read data, Bit #1 (value 2) enables watching for write data. 673 for read data, Bit #1 (value 2) enables watching for write data.
285 674
286 $iow = $iow->start 675 $iow = $iow->start
287 Start watching for requested events on the given handle. 676 Start watching for requested events on the given handle.
288 677
289 $iow = $iow->stop 678 $iow = $iow->stop
290 Stop watching for events on the given filehandle. 679 Stop watching for events on the given filehandle.
291 680
292ENVIRONMENT 681ENVIRONMENT
293 URXVT_PERL_VERBOSITY 682 URXVT_PERL_VERBOSITY
294 This variable controls the verbosity level of the perl extension. Higher 683 This variable controls the verbosity level of the perl extension.
295 numbers indicate more verbose output. 684 Higher numbers indicate more verbose output.
296 685
297 0 - only fatal messages 686 =0 - only fatal messages
298 3 - script loading and management 687 =3 - script loading and management
299 10 - all events received 688 =10 - all events received
300 689
301AUTHOR 690AUTHOR
302 Marc Lehmann <pcg@goof.com> 691 Marc Lehmann <pcg@goof.com>
303 http://software.schmorp.de/pkg/rxvt-unicode 692 http://software.schmorp.de/pkg/rxvt-unicode
304 693

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