1 |
=encoding utf8 |
2 |
|
3 |
=head1 NAME |
4 |
|
5 |
@@RXVT_NAME@@perl - rxvt-unicode's embedded perl interpreter |
6 |
|
7 |
=head1 SYNOPSIS |
8 |
|
9 |
# create a file grab_test in $HOME: |
10 |
|
11 |
sub on_sel_grab { |
12 |
warn "you selected ", $_[0]->selection; |
13 |
() |
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} |
15 |
|
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# start a @@RXVT_NAME@@ using it: |
17 |
|
18 |
@@RXVT_NAME@@ --perl-lib $HOME -pe grab_test |
19 |
|
20 |
=head1 DESCRIPTION |
21 |
|
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Everytime a terminal object gets created, scripts specified via the |
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C<perl> resource are loaded and associated with it. |
24 |
|
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Scripts are compiled in a 'use strict' and 'use utf8' environment, and |
26 |
thus must be encoded as UTF-8. |
27 |
|
28 |
Each script will only ever be loaded once, even in @@RXVT_NAME@@d, where |
29 |
scripts will be shared (but not enabled) for all terminals. |
30 |
|
31 |
=head2 Prepackaged Extensions |
32 |
|
33 |
This section describes the extensiosn delivered with this version. You can |
34 |
find them in F<@@RXVT_LIBDIR@@/urxvt/perl/>. |
35 |
|
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You can activate them like this: |
37 |
|
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@@RXVT_NAME@@ -pe <extensionname> |
39 |
|
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=over 4 |
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|
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=item selection |
43 |
|
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Intelligent selection. This extension tries to be more intelligent when |
45 |
the user extends selections (double-click). Right now, it tries to select |
46 |
urls and complete shell-quoted arguments, which is very convenient, too, |
47 |
if your F<ls> supports C<--quoting-style=shell>. |
48 |
|
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It also offers the following bindable event: |
50 |
|
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=over 4 |
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|
53 |
=item rot13 |
54 |
|
55 |
Rot-13 the selection when activated. Used via keyboard trigger: |
56 |
|
57 |
URxvt.keysym.C-M-r: perl:selection:rot13 |
58 |
|
59 |
=back |
60 |
|
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=item digital-clock |
62 |
|
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Displays a digital clock using the built-in overlay. |
64 |
|
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=item mark-urls |
66 |
|
67 |
Uses per-line filtering (C<on_line_update>) to underline urls. |
68 |
|
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=item example-refresh-hooks |
70 |
|
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Displays a very simple digital clock in the upper right corner of the |
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window. Illustrates overwriting the refresh callbacks to create your own |
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overlays or changes. |
74 |
|
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=item example-filter-input |
76 |
|
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A not very useful example of filtering all text output to the terminal, by |
78 |
underlining all urls that matches a certain regex (i.e. some urls :). It |
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is not very useful because urls that are output in multiple steps (e.g. |
80 |
when typing them) do not get marked. |
81 |
|
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=back |
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|
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=head2 General API Considerations |
85 |
|
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All objects (such as terminals, time watchers etc.) are typical |
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reference-to-hash objects. The hash can be used to store anything you |
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like. All members starting with an underscore (such as C<_ptr> or |
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C<_hook>) are reserved for internal uses and B<MUST NOT> be accessed or |
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modified). |
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|
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When objects are destroyed on the C++ side, the perl object hashes are |
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emptied, so its best to store related objects such as time watchers and |
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the like inside the terminal object so they get destroyed as soon as the |
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terminal is destroyed. |
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|
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Argument names also often indicate the type of a parameter. Here are some |
98 |
hints on what they mean: |
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|
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=over 4 |
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|
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=item $text |
103 |
|
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Rxvt-unicodes special way of encoding text, where one "unicode" character |
105 |
always represents one screen cell. See L<row_t> for a discussion of this format. |
106 |
|
107 |
=item $string |
108 |
|
109 |
A perl text string, with an emphasis on I<text>. It can store all unicode |
110 |
characters and is to be distinguished with text encoded in a specific |
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encoding (often locale-specific) and binary data. |
112 |
|
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=item $octets |
114 |
|
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Either binary data or - more common - a text string encoded in a |
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locale-specific way. |
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|
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=back |
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|
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=head2 Hooks |
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|
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The following subroutines can be declared in loaded scripts, and will be |
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called whenever the relevant event happens. |
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|
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The first argument passed to them is an object private to each terminal |
126 |
and extension package. You can call all C<urxvt::term> methods on it, but |
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its not a real C<urxvt::term> object. Instead, the real C<urxvt::term> |
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object that is shared between all packages is stored in the C<term> |
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member. |
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|
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All of them must return a boolean value. If it is true, then the event |
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counts as being I<consumed>, and the invocation of other hooks is skipped, |
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and the relevant action might not be carried out by the C++ code. |
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|
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When in doubt, return a false value (preferably C<()>). |
136 |
|
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=over 4 |
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|
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=item on_init $term |
140 |
|
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Called after a new terminal object has been initialized, but before |
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windows are created or the command gets run. |
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|
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=item on_reset $term |
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|
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Called after the screen is "reset" for any reason, such as resizing or |
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control sequences. Here is where you can react on changes to size-related |
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variables. |
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|
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=item on_start $term |
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|
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Called at the very end of initialisation of a new terminal, just before |
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returning to the mainloop. |
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|
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=item on_sel_make $term, $eventtime |
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|
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Called whenever a selection has been made by the user, but before the |
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selection text is copied, so changes to the beginning, end or type of the |
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selection will be honored. |
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|
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Returning a true value aborts selection making by urxvt, in which case you |
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have to make a selection yourself by calling C<< $term->selection_grab >>. |
163 |
|
164 |
=item on_sel_grab $term, $eventtime |
165 |
|
166 |
Called whenever a selection has been copied, but before the selection is |
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requested from the server. The selection text can be queried and changed |
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by calling C<< $term->selection >>. |
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|
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Returning a true value aborts selection grabbing. It will still be hilighted. |
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|
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=item on_sel_extend $term |
173 |
|
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Called whenever the user tries to extend the selection (e.g. with a double |
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click) and is either supposed to return false (normal operation), or |
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should extend the selection itelf and return true to suppress the built-in |
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processing. |
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|
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See the F<selection> example extension. |
180 |
|
181 |
=item on_focus_in $term |
182 |
|
183 |
Called whenever the window gets the keyboard focus, before urxvt does |
184 |
focus in processing. |
185 |
|
186 |
=item on_focus_out $term |
187 |
|
188 |
Called wheneever the window loses keyboard focus, before urxvt does focus |
189 |
out processing. |
190 |
|
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=item on_view_change $term, $offset |
192 |
|
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Called whenever the view offset changes, i..e the user or program |
194 |
scrolls. Offset C<0> means display the normal terminal, positive values |
195 |
show this many lines of scrollback. |
196 |
|
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=item on_scroll_back $term, $lines, $saved |
198 |
|
199 |
Called whenever lines scroll out of the terminal area into the scrollback |
200 |
buffer. C<$lines> is the number of lines scrolled out and may be larger |
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than the scroll back buffer or the terminal. |
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|
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It is called before lines are scrolled out (so rows 0 .. min ($lines - 1, |
204 |
$nrow - 1) represent the lines to be scrolled out). C<$saved> is the total |
205 |
number of lines that will be in the scrollback buffer. |
206 |
|
207 |
=item on_tty_activity $term *NYI* |
208 |
|
209 |
Called whenever the program(s) running in the urxvt window send output. |
210 |
|
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=item on_osc_seq $term, $string |
212 |
|
213 |
Called whenever the B<ESC ] 777 ; string ST> command sequence (OSC = |
214 |
operating system command) is processed. Cursor position and other state |
215 |
information is up-to-date when this happens. For interoperability, the |
216 |
string should start with the extension name and a colon, to distinguish |
217 |
it from commands for other extensions, and this might be enforced in the |
218 |
future. |
219 |
|
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Be careful not ever to trust (in a security sense) the data you receive, |
221 |
as its source can not easily be controleld (e-mail content, messages from |
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other users on the same system etc.). |
223 |
|
224 |
=item on_add_lines $term, $string |
225 |
|
226 |
Called whenever text is about to be output, with the text as argument. You |
227 |
can filter/change and output the text yourself by returning a true value |
228 |
and calling C<< $term->scr_add_lines >> yourself. Please note that this |
229 |
might be very slow, however, as your hook is called for B<all> text being |
230 |
output. |
231 |
|
232 |
=item on_line_update $term, $row |
233 |
|
234 |
Called whenever a line was updated or changed. Can be used to filter |
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screen output (e.g. underline urls or other useless stuff). Only lines |
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that are being shown will be filtered, and, due to performance reasons, |
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not always immediately. |
238 |
|
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The row number is always the topmost row of the line if the line spans |
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multiple rows. |
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|
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Please note that, if you change the line, then the hook might get called |
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later with the already-modified line (e.g. if unrelated parts change), so |
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you cannot just toggle rendition bits, but only set them. |
245 |
|
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=item on_refresh_begin $term |
247 |
|
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Called just before the screen gets redrawn. Can be used for overlay |
249 |
or similar effects by modify terminal contents in refresh_begin, and |
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restoring them in refresh_end. The built-in overlay and selection display |
251 |
code is run after this hook, and takes precedence. |
252 |
|
253 |
=item on_refresh_end $term |
254 |
|
255 |
Called just after the screen gets redrawn. See C<on_refresh_begin>. |
256 |
|
257 |
=item on_keyboard_command $term, $string |
258 |
|
259 |
Called whenever the user presses a key combination that has a |
260 |
C<perl:string> action bound to it (see description of the B<keysym> |
261 |
resource in the @@RXVT_NAME@@(1) manpage). |
262 |
|
263 |
=back |
264 |
|
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=head2 Variables in the C<urxvt> Package |
266 |
|
267 |
=over 4 |
268 |
|
269 |
=item $urxvt::TERM |
270 |
|
271 |
The current terminal. Whenever a callback/Hook is bein executed, this |
272 |
variable stores the current C<urxvt::term> object. |
273 |
|
274 |
=back |
275 |
|
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=head2 Functions in the C<urxvt> Package |
277 |
|
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=over 4 |
279 |
|
280 |
=item urxvt::fatal $errormessage |
281 |
|
282 |
Fatally aborts execution with the given error message. Avoid at all |
283 |
costs! The only time this is acceptable is when the terminal process |
284 |
starts up. |
285 |
|
286 |
=item urxvt::warn $string |
287 |
|
288 |
Calls C<rxvt_warn> with the given string which should not include a |
289 |
newline. The module also overwrites the C<warn> builtin with a function |
290 |
that calls this function. |
291 |
|
292 |
Using this function has the advantage that its output ends up in the |
293 |
correct place, e.g. on stderr of the connecting urxvtc client. |
294 |
|
295 |
=item $time = urxvt::NOW |
296 |
|
297 |
Returns the "current time" (as per the event loop). |
298 |
|
299 |
=back |
300 |
|
301 |
=head2 RENDITION |
302 |
|
303 |
Rendition bitsets contain information about colour, font, font styles and |
304 |
similar information for each screen cell. |
305 |
|
306 |
The following "macros" deal with changes in rendition sets. You should |
307 |
never just create a bitset, you should always modify an existing one, |
308 |
as they contain important information required for correct operation of |
309 |
rxvt-unicode. |
310 |
|
311 |
=over 4 |
312 |
|
313 |
=item $rend = urxvt::DEFAULT_RSTYLE |
314 |
|
315 |
Returns the default rendition, as used when the terminal is starting up or |
316 |
being reset. Useful as a base to start when creating renditions. |
317 |
|
318 |
=item $rend = urxvt::OVERLAY_RSTYLE |
319 |
|
320 |
Return the rendition mask used for overlays by default. |
321 |
|
322 |
=item $rendbit = urxvt::RS_Bold, RS_Italic, RS_Blink, RS_RVid, RS_Uline |
323 |
|
324 |
Return the bit that enabled bold, italic, blink, reverse-video and |
325 |
underline, respectively. To enable such a style, just logically OR it into |
326 |
the bitset. |
327 |
|
328 |
=item $foreground = urxvt::GET_BASEFG $rend |
329 |
|
330 |
=item $background = urxvt::GET_BASEBG $rend |
331 |
|
332 |
Return the foreground/background colour index, respectively. |
333 |
|
334 |
=item $rend = urxvt::SET_FGCOLOR ($rend, $new_colour) |
335 |
|
336 |
=item $rend = urxvt::SET_BGCOLOR ($rend, $new_colour) |
337 |
|
338 |
Replace the foreground/background colour in the rendition mask with the |
339 |
specified one. |
340 |
|
341 |
=item $value = urxvt::GET_CUSTOM ($rend) |
342 |
|
343 |
Return the "custom" value: Every rendition has 5 bits for use by |
344 |
extensions. They can be set and changed as you like and are initially |
345 |
zero. |
346 |
|
347 |
=item $rend = urxvt::SET_CUSTOM ($rend, $new_value) |
348 |
|
349 |
Change the custom value. |
350 |
|
351 |
=back |
352 |
|
353 |
=cut |
354 |
|
355 |
package urxvt; |
356 |
|
357 |
use strict; |
358 |
use Scalar::Util (); |
359 |
|
360 |
our $TERM; |
361 |
our @HOOKNAME; |
362 |
our $LIBDIR; |
363 |
|
364 |
BEGIN { |
365 |
urxvt->bootstrap; |
366 |
|
367 |
# overwrite perl's warn |
368 |
*CORE::GLOBAL::warn = sub { |
369 |
my $msg = join "", @_; |
370 |
$msg .= "\n" |
371 |
unless $msg =~ /\n$/; |
372 |
urxvt::warn ($msg); |
373 |
}; |
374 |
} |
375 |
|
376 |
my @hook_count; |
377 |
my $verbosity = $ENV{URXVT_PERL_VERBOSITY}; |
378 |
|
379 |
sub verbose { |
380 |
my ($level, $msg) = @_; |
381 |
warn "$msg\n" if $level <= $verbosity; |
382 |
} |
383 |
|
384 |
# find on_xxx subs in the package and register them |
385 |
# as hooks |
386 |
sub register_package($) { |
387 |
my ($pkg) = @_; |
388 |
|
389 |
for my $htype (0.. $#HOOKNAME) { |
390 |
my $name = $HOOKNAME[$htype]; |
391 |
|
392 |
my $ref = $pkg->can ("on_" . lc $name) |
393 |
or next; |
394 |
|
395 |
$TERM->{_hook}[$htype]{$pkg} = $ref; |
396 |
$hook_count[$htype]++ |
397 |
or set_should_invoke $htype, 1; |
398 |
} |
399 |
} |
400 |
|
401 |
my $script_pkg = "script0000"; |
402 |
my %script_pkg; |
403 |
|
404 |
# load a single script into its own package, once only |
405 |
sub script_package($) { |
406 |
my ($path) = @_; |
407 |
|
408 |
$script_pkg{$path} ||= do { |
409 |
my $pkg = "urxvt::" . ($script_pkg++); |
410 |
|
411 |
verbose 3, "loading script '$path' into package '$pkg'"; |
412 |
|
413 |
open my $fh, "<:raw", $path |
414 |
or die "$path: $!"; |
415 |
|
416 |
my $source = "package $pkg; use strict; use utf8;\n" |
417 |
. "#line 1 \"$path\"\n{\n" |
418 |
. (do { local $/; <$fh> }) |
419 |
. "\n};\n1"; |
420 |
|
421 |
eval $source or die "$path: $@"; |
422 |
|
423 |
$pkg |
424 |
} |
425 |
} |
426 |
|
427 |
our $retval; # return value for urxvt |
428 |
|
429 |
# called by the rxvt core |
430 |
sub invoke { |
431 |
local $TERM = shift; |
432 |
my $htype = shift; |
433 |
|
434 |
if ($htype == 0) { # INIT |
435 |
my @dirs = ((split /:/, $TERM->resource ("perl_lib")), "$LIBDIR/perl"); |
436 |
|
437 |
for my $ext (map { split /:/, $TERM->resource ("perl_ext_$_") } 1, 2) { |
438 |
my @files = grep -f $_, map "$_/$ext", @dirs; |
439 |
|
440 |
if (@files) { |
441 |
register_package script_package $files[0]; |
442 |
} else { |
443 |
warn "perl extension '$ext' not found in perl library search path\n"; |
444 |
} |
445 |
} |
446 |
} |
447 |
|
448 |
$retval = undef; |
449 |
|
450 |
if (my $cb = $TERM->{_hook}[$htype]) { |
451 |
verbose 10, "$HOOKNAME[$htype] (" . (join ", ", $TERM, @_) . ")" |
452 |
if $verbosity >= 10; |
453 |
|
454 |
keys %$cb; |
455 |
|
456 |
while (my ($pkg, $cb) = each %$cb) { |
457 |
$retval = $cb->( |
458 |
$TERM->{_pkg}{$pkg} ||= do { |
459 |
my $proxy = bless { }, urxvt::term::proxy::; |
460 |
Scalar::Util::weaken ($proxy->{term} = $TERM); |
461 |
$proxy |
462 |
}, |
463 |
@_, |
464 |
) and last; |
465 |
} |
466 |
} |
467 |
|
468 |
if ($htype == 1) { # DESTROY |
469 |
# remove hooks if unused |
470 |
if (my $hook = $TERM->{_hook}) { |
471 |
for my $htype (0..$#$hook) { |
472 |
$hook_count[$htype] -= scalar keys %{ $hook->[$htype] || {} } |
473 |
or set_should_invoke $htype, 0; |
474 |
} |
475 |
} |
476 |
|
477 |
# clear package objects |
478 |
%$_ = () for values %{ $TERM->{_pkg} }; |
479 |
|
480 |
# clear package |
481 |
%$TERM = (); |
482 |
} |
483 |
|
484 |
$retval |
485 |
} |
486 |
|
487 |
sub urxvt::term::proxy::AUTOLOAD { |
488 |
$urxvt::term::proxy::AUTOLOAD =~ /:([^:]+)$/ |
489 |
or die "FATAL: \$AUTOLOAD '$urxvt::term::proxy::AUTOLOAD' unparsable"; |
490 |
|
491 |
eval qq{ |
492 |
sub $urxvt::term::proxy::AUTOLOAD { |
493 |
my \$proxy = shift; |
494 |
\$proxy->{term}->$1 (\@_) |
495 |
} |
496 |
1 |
497 |
} or die "FATAL: unable to compile method forwarder: $@"; |
498 |
|
499 |
goto &$urxvt::term::proxy::AUTOLOAD; |
500 |
} |
501 |
|
502 |
=head2 The C<urxvt::term> Class |
503 |
|
504 |
=over 4 |
505 |
|
506 |
=item $value = $term->resource ($name[, $newval]) |
507 |
|
508 |
Returns the current resource value associated with a given name and |
509 |
optionally sets a new value. Setting values is most useful in the C<init> |
510 |
hook. Unset resources are returned and accepted as C<undef>. |
511 |
|
512 |
The new value must be properly encoded to a suitable character encoding |
513 |
before passing it to this method. Similarly, the returned value may need |
514 |
to be converted from the used encoding to text. |
515 |
|
516 |
Resource names are as defined in F<src/rsinc.h>. Colours can be specified |
517 |
as resource names of the form C<< color+<index> >>, e.g. C<color+5>. (will |
518 |
likely change). |
519 |
|
520 |
Please note that resource strings will currently only be freed when the |
521 |
terminal is destroyed, so changing options frequently will eat memory. |
522 |
|
523 |
Here is a a likely non-exhaustive list of resource names, not all of which |
524 |
are supported in every build, please see the source to see the actual |
525 |
list: |
526 |
|
527 |
answerbackstring backgroundPixmap backspace_key boldFont boldItalicFont |
528 |
borderLess color cursorBlink cursorUnderline cutchars delete_key |
529 |
display_name embed ext_bwidth fade font geometry hold iconName |
530 |
imFont imLocale inputMethod insecure int_bwidth intensityStyles |
531 |
italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier |
532 |
mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2 |
533 |
perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd |
534 |
reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating |
535 |
scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput |
536 |
scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle |
537 |
shade term_name title transparent transparent_all tripleclickwords |
538 |
utmpInhibit visualBell |
539 |
|
540 |
=cut |
541 |
|
542 |
sub urxvt::term::resource($$;$) { |
543 |
my ($self, $name) = (shift, shift); |
544 |
unshift @_, $self, $name, ($name =~ s/\s*\+\s*(\d+)$// ? $1 : 0); |
545 |
goto &urxvt::term::_resource; |
546 |
} |
547 |
|
548 |
=item $rend = $term->rstyle ([$new_rstyle]) |
549 |
|
550 |
Return and optionally change the current rendition. Text that is output by |
551 |
the terminal application will use this style. |
552 |
|
553 |
=item ($row, $col) = $term->screen_cur ([$row, $col]) |
554 |
|
555 |
Return the current coordinates of the text cursor position and optionally |
556 |
set it (which is usually bad as applications don't expect that). |
557 |
|
558 |
=item ($row, $col) = $term->selection_mark ([$row, $col]) |
559 |
|
560 |
=item ($row, $col) = $term->selection_beg ([$row, $col]) |
561 |
|
562 |
=item ($row, $col) = $term->selection_end ([$row, $col]) |
563 |
|
564 |
Return the current values of the selection mark, begin or end positions, |
565 |
and optionally set them to new values. |
566 |
|
567 |
=item $success = $term->selection_grab ($eventtime) |
568 |
|
569 |
Try to request the primary selection from the server (for example, as set |
570 |
by the next method). |
571 |
|
572 |
=item $oldtext = $term->selection ([$newtext]) |
573 |
|
574 |
Return the current selection text and optionally replace it by C<$newtext>. |
575 |
|
576 |
#=item $term->overlay ($x, $y, $text) |
577 |
# |
578 |
#Create a simple multi-line overlay box. See the next method for details. |
579 |
# |
580 |
#=cut |
581 |
# |
582 |
#sub urxvt::term::scr_overlay { |
583 |
# my ($self, $x, $y, $text) = @_; |
584 |
# |
585 |
# my @lines = split /\n/, $text; |
586 |
# |
587 |
# my $w = 0; |
588 |
# for (map $self->strwidth ($_), @lines) { |
589 |
# $w = $_ if $w < $_; |
590 |
# } |
591 |
# |
592 |
# $self->scr_overlay_new ($x, $y, $w, scalar @lines); |
593 |
# $self->scr_overlay_set (0, $_, $lines[$_]) for 0.. $#lines; |
594 |
#} |
595 |
|
596 |
=item $term->overlay ($x, $y, $width, $height[, $rstyle[, $border]]) |
597 |
|
598 |
Create a new (empty) overlay at the given position with the given |
599 |
width/height. C<$rstyle> defines the initial rendition style |
600 |
(default: C<OVERLAY_RSTYLE>). |
601 |
|
602 |
If C<$border> is C<2> (default), then a decorative border will be put |
603 |
around the box. |
604 |
|
605 |
If either C<$x> or C<$y> is negative, then this is counted from the |
606 |
right/bottom side, respectively. |
607 |
|
608 |
This method returns an urxvt::overlay object. The overlay will be visible |
609 |
as long as the perl object is referenced. |
610 |
|
611 |
The methods currently supported on C<urxvt::overlay> objects are: |
612 |
|
613 |
=over 4 |
614 |
|
615 |
=item $overlay->set ($x, $y, $text, $rend) |
616 |
|
617 |
Similar to C<< $term->ROW_t >> and C<< $term->ROW_r >> in that it puts |
618 |
text in rxvt-unicode's special encoding and an array of rendition values |
619 |
at a specific position inside the overlay. |
620 |
|
621 |
=item $overlay->hide |
622 |
|
623 |
If visible, hide the overlay, but do not destroy it. |
624 |
|
625 |
=item $overlay->show |
626 |
|
627 |
If hidden, display the overlay again. |
628 |
|
629 |
=back |
630 |
|
631 |
=item $cellwidth = $term->strwidth $string |
632 |
|
633 |
Returns the number of screen-cells this string would need. Correctly |
634 |
accounts for wide and combining characters. |
635 |
|
636 |
=item $octets = $term->locale_encode $string |
637 |
|
638 |
Convert the given text string into the corresponding locale encoding. |
639 |
|
640 |
=item $string = $term->locale_decode $octets |
641 |
|
642 |
Convert the given locale-encoded octets into a perl string. |
643 |
|
644 |
=item $term->scr_add_lines ($string) |
645 |
|
646 |
Write the given text string to the screen, as if output by the application |
647 |
running inside the terminal. It may not contain command sequences (escape |
648 |
codes), but is free to use line feeds, carriage returns and tabs. The |
649 |
string is a normal text string, not in locale-dependent encoding. |
650 |
|
651 |
Normally its not a good idea to use this function, as programs might be |
652 |
confused by changes in cursor position or scrolling. Its useful inside a |
653 |
C<on_add_lines> hook, though. |
654 |
|
655 |
=item $term->tt_write ($octets) |
656 |
|
657 |
Write the octets given in C<$data> to the tty (i.e. as program input). To |
658 |
pass characters instead of octets, you should convert your strings first |
659 |
to the locale-specific encoding using C<< $term->locale_encode >>. |
660 |
|
661 |
=item $window_width = $term->width |
662 |
|
663 |
=item $window_height = $term->height |
664 |
|
665 |
=item $font_width = $term->fwidth |
666 |
|
667 |
=item $font_height = $term->fheight |
668 |
|
669 |
=item $font_ascent = $term->fbase |
670 |
|
671 |
=item $terminal_rows = $term->nrow |
672 |
|
673 |
=item $terminal_columns = $term->ncol |
674 |
|
675 |
=item $has_focus = $term->focus |
676 |
|
677 |
=item $is_mapped = $term->mapped |
678 |
|
679 |
=item $max_scrollback = $term->saveLines |
680 |
|
681 |
=item $nrow_plus_saveLines = $term->total_rows |
682 |
|
683 |
=item $lines_in_scrollback = $term->nsaved |
684 |
|
685 |
Return various integers describing terminal characteristics. |
686 |
|
687 |
=item $view_start = $term->view_start ([$newvalue]) |
688 |
|
689 |
Returns the negative row number of the topmost line. Minimum value is |
690 |
C<0>, which displays the normal terminal contents. Larger values scroll |
691 |
this many lines into the scrollback buffer. |
692 |
|
693 |
=item $term->want_refresh |
694 |
|
695 |
Requests a screen refresh. At the next opportunity, rxvt-unicode will |
696 |
compare the on-screen display with its stored representation. If they |
697 |
differ, it redraws the differences. |
698 |
|
699 |
Used after changing terminal contents to display them. |
700 |
|
701 |
=item $text = $term->ROW_t ($row_number[, $new_text[, $start_col]]) |
702 |
|
703 |
Returns the text of the entire row with number C<$row_number>. Row C<0> |
704 |
is the topmost terminal line, row C<< $term->$ncol-1 >> is the bottommost |
705 |
terminal line. The scrollback buffer starts at line C<-1> and extends to |
706 |
line C<< -$term->nsaved >>. Nothing will be returned if a nonexistent line |
707 |
is requested. |
708 |
|
709 |
If C<$new_text> is specified, it will replace characters in the current |
710 |
line, starting at column C<$start_col> (default C<0>), which is useful |
711 |
to replace only parts of a line. The font index in the rendition will |
712 |
automatically be updated. |
713 |
|
714 |
C<$text> is in a special encoding: tabs and wide characters that use more |
715 |
than one cell when displayed are padded with urxvt::NOCHAR characters |
716 |
(C<chr 65535>). Characters with combining characters and other characters |
717 |
that do not fit into the normal tetx encoding will be replaced with |
718 |
characters in the private use area. |
719 |
|
720 |
You have to obey this encoding when changing text. The advantage is |
721 |
that C<substr> and similar functions work on screen cells and not on |
722 |
characters. |
723 |
|
724 |
The methods C<< $term->special_encode >> and C<< $term->special_decode >> |
725 |
can be used to convert normal strings into this encoding and vice versa. |
726 |
|
727 |
=item $rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]]) |
728 |
|
729 |
Like C<< $term->ROW_t >>, but returns an arrayref with rendition |
730 |
bitsets. Rendition bitsets contain information about colour, font, font |
731 |
styles and similar information. See also C<< $term->ROW_t >>. |
732 |
|
733 |
When setting rendition, the font mask will be ignored. |
734 |
|
735 |
See the section on RENDITION, above. |
736 |
|
737 |
=item $length = $term->ROW_l ($row_number[, $new_length]) |
738 |
|
739 |
Returns the number of screen cells that are in use ("the line |
740 |
length"). Unlike the urxvt core, this returns C<< $term->ncol >> if the |
741 |
line is joined with the following one. |
742 |
|
743 |
=item $bool = $term->is_longer ($row_number) |
744 |
|
745 |
Returns true if the row is part of a multiple-row logical "line" (i.e. |
746 |
joined with the following row), which means all characters are in use |
747 |
and it is continued on the next row (and possibly a continuation of the |
748 |
previous row(s)). |
749 |
|
750 |
=item $line = $term->line ($row_number) |
751 |
|
752 |
Create and return a new C<urxvt::line> object that stores information |
753 |
about the logical line that row C<$row_number> is part of. It supports the |
754 |
following methods: |
755 |
|
756 |
=over 4 |
757 |
|
758 |
=item $text = $line->t ([$new_text]) |
759 |
|
760 |
Returns or replaces the full text of the line, similar to C<ROW_t> |
761 |
|
762 |
=item $rend = $line->r ([$new_rend]) |
763 |
|
764 |
Returns or replaces the full rendition array of the line, similar to C<ROW_r> |
765 |
|
766 |
=item $length = $line->l |
767 |
|
768 |
Returns the length of the line in cells, similar to C<ROW_l>. |
769 |
|
770 |
=item $rownum = $line->beg |
771 |
|
772 |
=item $rownum = $line->end |
773 |
|
774 |
Return the row number of the first/last row of the line, respectively. |
775 |
|
776 |
=item $offset = $line->offset_of ($row, $col) |
777 |
|
778 |
Returns the character offset of the given row|col pair within the logical |
779 |
line. |
780 |
|
781 |
=item ($row, $col) = $line->coord_of ($offset) |
782 |
|
783 |
Translates a string offset into terminal coordinates again. |
784 |
|
785 |
=back |
786 |
|
787 |
=cut |
788 |
|
789 |
sub urxvt::term::line { |
790 |
my ($self, $row) = @_; |
791 |
|
792 |
my $maxrow = $self->nrow - 1; |
793 |
|
794 |
my ($beg, $end) = ($row, $row); |
795 |
|
796 |
--$beg while $self->ROW_is_longer ($beg - 1); |
797 |
++$end while $self->ROW_is_longer ($end) && $end < $maxrow; |
798 |
|
799 |
bless { |
800 |
term => $self, |
801 |
beg => $beg, |
802 |
end => $end, |
803 |
ncol => $self->ncol, |
804 |
len => ($end - $beg) * $self->ncol + $self->ROW_l ($end), |
805 |
}, urxvt::line:: |
806 |
} |
807 |
|
808 |
sub urxvt::line::t { |
809 |
my ($self) = @_; |
810 |
|
811 |
if (@_ > 1) |
812 |
{ |
813 |
$self->{term}->ROW_t ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol}) |
814 |
for $self->{beg} .. $self->{end}; |
815 |
} |
816 |
|
817 |
defined wantarray && |
818 |
substr +(join "", map $self->{term}->ROW_t ($_), $self->{beg} .. $self->{end}), |
819 |
0, $self->{len} |
820 |
} |
821 |
|
822 |
sub urxvt::line::r { |
823 |
my ($self) = @_; |
824 |
|
825 |
if (@_ > 1) |
826 |
{ |
827 |
$self->{term}->ROW_r ($_, $_[1], 0, ($_ - $self->{beg}) * $self->{ncol}, $self->{ncol}) |
828 |
for $self->{beg} .. $self->{end}; |
829 |
} |
830 |
|
831 |
if (defined wantarray) { |
832 |
my $rend = [ |
833 |
map @{ $self->{term}->ROW_r ($_) }, $self->{beg} .. $self->{end} |
834 |
]; |
835 |
$#$rend = $self->{len} - 1; |
836 |
return $rend; |
837 |
} |
838 |
|
839 |
() |
840 |
} |
841 |
|
842 |
sub urxvt::line::beg { $_[0]{beg} } |
843 |
sub urxvt::line::end { $_[0]{end} } |
844 |
sub urxvt::line::l { $_[0]{len} } |
845 |
|
846 |
sub urxvt::line::offset_of { |
847 |
my ($self, $row, $col) = @_; |
848 |
|
849 |
($row - $self->{beg}) * $self->{ncol} + $col |
850 |
} |
851 |
|
852 |
sub urxvt::line::coord_of { |
853 |
my ($self, $offset) = @_; |
854 |
|
855 |
use integer; |
856 |
|
857 |
( |
858 |
$offset / $self->{ncol} + $self->{beg}, |
859 |
$offset % $self->{ncol} |
860 |
) |
861 |
} |
862 |
|
863 |
=item ($row, $col) = $line->coord_of ($offset) |
864 |
=item $text = $term->special_encode $string |
865 |
|
866 |
Converts a perl string into the special encoding used by rxvt-unicode, |
867 |
where one character corresponds to one screen cell. See |
868 |
C<< $term->ROW_t >> for details. |
869 |
|
870 |
=item $string = $term->special_decode $text |
871 |
|
872 |
Converts rxvt-unicodes text reprsentation into a perl string. See |
873 |
C<< $term->ROW_t >> for details. |
874 |
|
875 |
=back |
876 |
|
877 |
=head2 The C<urxvt::timer> Class |
878 |
|
879 |
This class implements timer watchers/events. Time is represented as a |
880 |
fractional number of seconds since the epoch. Example: |
881 |
|
882 |
$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0); |
883 |
$term->{timer} = urxvt::timer |
884 |
->new |
885 |
->interval (1) |
886 |
->cb (sub { |
887 |
$term->{overlay}->set (0, 0, |
888 |
sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]); |
889 |
}); |
890 |
|
891 |
=over 4 |
892 |
|
893 |
=item $timer = new urxvt::timer |
894 |
|
895 |
Create a new timer object in started state. It is scheduled to fire |
896 |
immediately. |
897 |
|
898 |
=item $timer = $timer->cb (sub { my ($timer) = @_; ... }) |
899 |
|
900 |
Set the callback to be called when the timer triggers. |
901 |
|
902 |
=item $tstamp = $timer->at |
903 |
|
904 |
Return the time this watcher will fire next. |
905 |
|
906 |
=item $timer = $timer->set ($tstamp) |
907 |
|
908 |
Set the time the event is generated to $tstamp. |
909 |
|
910 |
=item $timer = $timer->interval ($interval) |
911 |
|
912 |
Normally (and when C<$interval> is C<0>), the timer will automatically |
913 |
stop after it has fired once. If C<$interval> is non-zero, then the timer |
914 |
is automatically rescheduled at the given intervals. |
915 |
|
916 |
=item $timer = $timer->start |
917 |
|
918 |
Start the timer. |
919 |
|
920 |
=item $timer = $timer->start ($tstamp) |
921 |
|
922 |
Set the event trigger time to C<$tstamp> and start the timer. |
923 |
|
924 |
=item $timer = $timer->stop |
925 |
|
926 |
Stop the timer. |
927 |
|
928 |
=back |
929 |
|
930 |
=head2 The C<urxvt::iow> Class |
931 |
|
932 |
This class implements io watchers/events. Example: |
933 |
|
934 |
$term->{socket} = ... |
935 |
$term->{iow} = urxvt::iow |
936 |
->new |
937 |
->fd (fileno $term->{socket}) |
938 |
->events (1) # wait for read data |
939 |
->start |
940 |
->cb (sub { |
941 |
my ($iow, $revents) = @_; |
942 |
# $revents must be 1 here, no need to check |
943 |
sysread $term->{socket}, my $buf, 8192 |
944 |
or end-of-file; |
945 |
}); |
946 |
|
947 |
|
948 |
=over 4 |
949 |
|
950 |
=item $iow = new urxvt::iow |
951 |
|
952 |
Create a new io watcher object in stopped state. |
953 |
|
954 |
=item $iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... }) |
955 |
|
956 |
Set the callback to be called when io events are triggered. C<$reventmask> |
957 |
is a bitset as described in the C<events> method. |
958 |
|
959 |
=item $iow = $iow->fd ($fd) |
960 |
|
961 |
Set the filedescriptor (not handle) to watch. |
962 |
|
963 |
=item $iow = $iow->events ($eventmask) |
964 |
|
965 |
Set the event mask to watch. Bit #0 (value C<1>) enables watching for read |
966 |
data, Bit #1 (value C<2>) enables watching for write data. |
967 |
|
968 |
=item $iow = $iow->start |
969 |
|
970 |
Start watching for requested events on the given handle. |
971 |
|
972 |
=item $iow = $iow->stop |
973 |
|
974 |
Stop watching for events on the given filehandle. |
975 |
|
976 |
=back |
977 |
|
978 |
=head1 ENVIRONMENT |
979 |
|
980 |
=head2 URXVT_PERL_VERBOSITY |
981 |
|
982 |
This variable controls the verbosity level of the perl extension. Higher |
983 |
numbers indicate more verbose output. |
984 |
|
985 |
=over 4 |
986 |
|
987 |
=item =0 - only fatal messages |
988 |
|
989 |
=item =3 - script loading and management |
990 |
|
991 |
=item =10 - all events received |
992 |
|
993 |
=back |
994 |
|
995 |
=head1 AUTHOR |
996 |
|
997 |
Marc Lehmann <pcg@goof.com> |
998 |
http://software.schmorp.de/pkg/rxvt-unicode |
999 |
|
1000 |
=cut |
1001 |
|
1002 |
1 |