urxvtperl(3) RXVT-UNICODE urxvtperl(3)NAMEurxvtperl - rxvt-unicode's embedded perl interpreter
SYNOPSIS
# create a file grab_test in $HOME:
sub on_sel_grab {
warn "you selected ", $_[0]->selection;
()
}
# start a urxvt using it:
urxvt --perl-lib $HOME -pe grab_test
DESCRIPTION
Every time a terminal object gets created, extension scripts specified
via the "perl" resource are loaded and associated with it.
Scripts are compiled in a 'use strict "vars"' and 'use utf8'
environment, and thus must be encoded as UTF-8.
Each script will only ever be loaded once, even in urxvtd, where
scripts will be shared (but not enabled) for all terminals.
You can disable the embedded perl interpreter by setting both "perl-
ext" and "perl-ext-common" resources to the empty string.
PREPACKAGED EXTENSIONS
A number of extensions are delivered with this release. You can find
them in <libdir>/urxvt/perl/, and the documentation can be viewed using
man urxvt-<EXTENSIONNAME>.
You can activate them like this:
urxvt -pe <extensionname>
Or by adding them to the resource for extensions loaded by default:
URxvt.perl-ext-common: default,selection-autotransform
Extensions may add additional resources and "actions", i.e., methods
which can be bound to a key and invoked by the user. An extension can
define the resources it support using so called META comments,
described below. Similarly to builtin resources, extension resources
can also be specified on the command line as long options (with "."
replaced by "-"), in which case the corresponding extension is loaded
automatically. For this to work the extension must define META comments
for its resources.
API DOCUMENTATION
General API Considerations
All objects (such as terminals, time watchers etc.) are typical
reference-to-hash objects. The hash can be used to store anything you
like. All members starting with an underscore (such as "_ptr" or
"_hook") are reserved for internal uses and MUST NOT be accessed or
modified).
When objects are destroyed on the C++ side, the perl object hashes are
emptied, so its best to store related objects such as time watchers and
the like inside the terminal object so they get destroyed as soon as
the terminal is destroyed.
Argument names also often indicate the type of a parameter. Here are
some hints on what they mean:
$text
Rxvt-unicode's special way of encoding text, where one "unicode"
character always represents one screen cell. See ROW_t for a
discussion of this format.
$string
A perl text string, with an emphasis on text. It can store all
unicode characters and is to be distinguished with text encoded in
a specific encoding (often locale-specific) and binary data.
$octets
Either binary data or - more common - a text string encoded in a
locale-specific way.
$keysym
an integer that is a valid X11 keysym code. You can convert a
string into a keysym and viceversa by using "XStringToKeysym" and
"XKeysymToString".
Extension Objects
Every perl extension is a perl class. A separate perl object is created
for each terminal, and each terminal has its own set of extension
objects, which are passed as the first parameter to hooks. So
extensions can use their $self object without having to think about
clashes with other extensions or other terminals, with the exception of
methods and members that begin with an underscore character "_": these
are reserved for internal use.
Although it isn't a "urxvt::term" object, you can call all methods of
the "urxvt::term" class on this object.
Additional methods only supported for extension objects are described
in the "urxvt::extension" section below.
META comments
Rxvt-unicode recognizes special meta comments in extensions that define
different types of metadata.
Currently, it recognises only one such comment:
#:META:RESOURCE:name:type:desc
The RESOURCE comment defines a resource used by the extension,
where "name" is the resource name, "type" is the resource type,
"boolean" or "string", and "desc" is the resource description.
Hooks
The following subroutines can be declared in extension files, and will
be called whenever the relevant event happens.
The first argument passed to them is an extension object as described
in the in the "Extension Objects" section.
All of these hooks must return a boolean value. If any of the called
hooks returns true, then the event counts as being consumed, and the
relevant action might not be carried out by the C++ code.
When in doubt, return a false value (preferably "()").
on_init $term
Called after a new terminal object has been initialized, but before
windows are created or the command gets run. Most methods are
unsafe to call or deliver senseless data, as terminal size and
other characteristics have not yet been determined. You can safely
query and change resources and options, though. For many purposes
the "on_start" hook is a better place.
on_start $term
Called at the very end of initialisation of a new terminal, just
before trying to map (display) the toplevel and returning to the
main loop.
on_destroy $term
Called whenever something tries to destroy terminal, when the
terminal is still fully functional (not for long, though).
on_reset $term
Called after the screen is "reset" for any reason, such as resizing
or control sequences. Here is where you can react on changes to
size-related variables.
on_child_start $term, $pid
Called just after the child process has been "fork"ed.
on_child_exit $term, $status
Called just after the child process has exited. $status is the
status from "waitpid".
on_sel_make $term, $eventtime
Called whenever a selection has been made by the user, but before
the selection text is copied, so changes to the beginning, end or
type of the selection will be honored.
Returning a true value aborts selection making by urxvt, in which
case you have to make a selection yourself by calling
"$term->selection_grab".
on_sel_grab $term, $eventtime
Called whenever a selection has been copied, but before the
selection is requested from the server. The selection text can be
queried and changed by calling "$term->selection".
Returning a true value aborts selection grabbing. It will still be
highlighted.
on_sel_extend $term
Called whenever the user tries to extend the selection (e.g. with a
double click) and is either supposed to return false (normal
operation), or should extend the selection itself and return true
to suppress the built-in processing. This can happen multiple
times, as long as the callback returns true, it will be called on
every further click by the user and is supposed to enlarge the
selection more and more, if possible.
See the selection example extension.
on_view_change $term, $offset
Called whenever the view offset changes, i.e. the user or program
scrolls. Offset 0 means display the normal terminal, positive
values show this many lines of scrollback.
on_scroll_back $term, $lines, $saved
Called whenever lines scroll out of the terminal area into the
scrollback buffer. $lines is the number of lines scrolled out and
may be larger than the scroll back buffer or the terminal.
It is called before lines are scrolled out (so rows 0 .. min
($lines - 1, $nrow - 1) represent the lines to be scrolled out).
$saved is the total number of lines that will be in the scrollback
buffer.
on_osc_seq $term, $op, $args, $resp
Called on every OSC sequence and can be used to suppress it or
modify its behaviour. The default should be to return an empty
list. A true value suppresses execution of the request completely.
Make sure you don't get confused by recursive invocations when you
output an OSC sequence within this callback.
"on_osc_seq_perl" should be used for new behaviour.
on_osc_seq_perl $term, $args, $resp
Called whenever the ESC ] 777 ; string ST command sequence (OSC =
operating system command) is processed. Cursor position and other
state information is up-to-date when this happens. For
interoperability, the string should start with the extension name
(sans -osc) and a semicolon, to distinguish it from commands for
other extensions, and this might be enforced in the future.
For example, "overlay-osc" uses this:
sub on_osc_seq_perl {
my ($self, $osc, $resp) = @_;
return unless $osc =~ s/^overlay;//;
... process remaining $osc string
}
Be careful not ever to trust (in a security sense) the data you
receive, as its source can not easily be controlled (e-mail
content, messages from other users on the same system etc.).
For responses, $resp contains the end-of-args separator used by the
sender.
on_add_lines $term, $string
Called whenever text is about to be output, with the text as
argument. You can filter/change and output the text yourself by
returning a true value and calling "$term->scr_add_lines" yourself.
Please note that this might be very slow, however, as your hook is
called for all text being output.
on_tt_write $term, $octets
Called whenever some data is written to the tty/pty and can be used
to suppress or filter tty input.
on_tt_paste $term, $octets
Called whenever text is about to be pasted, with the text as
argument. You can filter/change and paste the text yourself by
returning a true value and calling "$term->tt_paste" yourself.
$octets is locale-encoded.
on_line_update $term, $row
Called whenever a line was updated or changed. Can be used to
filter screen output (e.g. underline urls or other useless stuff).
Only lines that are being shown will be filtered, and, due to
performance reasons, not always immediately.
The row number is always the topmost row of the line if the line
spans multiple rows.
Please note that, if you change the line, then the hook might get
called later with the already-modified line (e.g. if unrelated
parts change), so you cannot just toggle rendition bits, but only
set them.
on_refresh_begin $term
Called just before the screen gets redrawn. Can be used for overlay
or similar effects by modifying the terminal contents in
refresh_begin, and restoring them in refresh_end. The built-in
overlay and selection display code is run after this hook, and
takes precedence.
on_refresh_end $term
Called just after the screen gets redrawn. See "on_refresh_begin".
on_action $term, $string
Called whenever an action is invoked for the corresponding
extension (e.g. via a "extension:string" builtin action bound to a
key, see description of the keysym resource in the urxvt(1)
manpage). The event is simply the action string. Note that an
action event is always associated to a single extension.
on_user_command $term, $string *DEPRECATED*
Called whenever a user-configured event is being activated (e.g.
via a "perl:string" action bound to a key, see description of the
keysym resource in the urxvt(1) manpage).
The event is simply the action string. This interface is going away
in preference to the "on_action" hook.
on_resize_all_windows $term, $new_width, $new_height
Called just after the new window size has been calculated, but
before windows are actually being resized or hints are being set.
If this hook returns a true value, setting of the window hints is
being skipped.
on_x_event $term, $event
Called on every X event received on the vt window (and possibly
other windows). Should only be used as a last resort. Most event
structure members are not passed.
on_root_event $term, $event
Like "on_x_event", but is called for events on the root window.
on_focus_in $term
Called whenever the window gets the keyboard focus, before rxvt-
unicode does focus in processing.
on_focus_out $term
Called whenever the window loses keyboard focus, before rxvt-
unicode does focus out processing.
on_configure_notify $term, $event
on_property_notify $term, $event
on_key_press $term, $event, $keysym, $octets
on_key_release $term, $event, $keysym
on_button_press $term, $event
on_button_release $term, $event
on_motion_notify $term, $event
on_map_notify $term, $event
on_unmap_notify $term, $event
Called whenever the corresponding X event is received for the
terminal. If the hook returns true, then the event will be ignored
by rxvt-unicode.
The event is a hash with most values as named by Xlib (see the
XEvent manpage), with the additional members "row" and "col", which
are the (real, not screen-based) row and column under the mouse
cursor.
"on_key_press" additionally receives the string rxvt-unicode would
output, if any, in locale-specific encoding.
on_client_message $term, $event
on_wm_protocols $term, $event
on_wm_delete_window $term, $event
Called when various types of ClientMessage events are received (all
with format=32, WM_PROTOCOLS or WM_PROTOCOLS:WM_DELETE_WINDOW).
on_bell $term
Called on receipt of a bell character.
Variables in the "urxvt" Package
$urxvt::LIBDIR
The rxvt-unicode library directory, where, among other things, the
perl modules and scripts are stored.
$urxvt::RESCLASS, $urxvt::RESCLASS
The resource class and name rxvt-unicode uses to look up X
resources.
$urxvt::RXVTNAME
The basename of the installed binaries, usually "urxvt".
$urxvt::TERM
The current terminal. This variable stores the current
"urxvt::term" object, whenever a callback/hook is executing.
@urxvt::TERM_INIT
All code references in this array will be called as methods of the
next newly created "urxvt::term" object (during the "on_init"
phase). The array gets cleared before the code references that were
in it are being executed, so references can push themselves onto it
again if they so desire.
This complements to the perl-eval command line option, but gets
executed first.
@urxvt::TERM_EXT
Works similar to @TERM_INIT, but contains perl package/class names,
which get registered as normal extensions after calling the hooks
in @TERM_INIT but before other extensions. Gets cleared just like
@TERM_INIT.
Functions in the "urxvt" Package
urxvt::fatal $errormessage
Fatally aborts execution with the given error message (which should
include a trailing newline). Avoid at all costs! The only time this
is acceptable (and useful) is in the init hook, where it prevents
the terminal from starting up.
urxvt::warn $string
Calls "rxvt_warn" with the given string which should include a
trailing newline. The module also overwrites the "warn" builtin
with a function that calls this function.
Using this function has the advantage that its output ends up in
the correct place, e.g. on stderr of the connecting urxvtc client.
Messages have a size limit of 1023 bytes currently.
@terms = urxvt::termlist
Returns all urxvt::term objects that exist in this process,
regardless of whether they are started, being destroyed etc., so be
careful. Only term objects that have perl extensions attached will
be returned (because there is no urxvt::term object associated with
others).
$time = urxvt::NOW
Returns the "current time" (as per the event loop).
urxvt::CurrentTime
urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask, Mod3Mask,
Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask, Button4Mask,
Button5Mask, AnyModifier
urxvt::NoEventMask, KeyPressMask, KeyReleaseMask, ButtonPressMask,
ButtonReleaseMask, EnterWindowMask, LeaveWindowMask, PointerMotionMask,
PointerMotionHintMask, Button1MotionMask, Button2MotionMask,
Button3MotionMask, Button4MotionMask, Button5MotionMask,
ButtonMotionMask, KeymapStateMask, ExposureMask, VisibilityChangeMask,
StructureNotifyMask, ResizeRedirectMask, SubstructureNotifyMask,
SubstructureRedirectMask, FocusChangeMask, PropertyChangeMask,
ColormapChangeMask, OwnerGrabButtonMask
urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify,
EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose,
GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify,
DestroyNotify, UnmapNotify, MapNotify, MapRequest, ReparentNotify,
ConfigureNotify, ConfigureRequest, GravityNotify, ResizeRequest,
CirculateNotify, CirculateRequest, PropertyNotify, SelectionClear,
SelectionRequest, SelectionNotify, ColormapNotify, ClientMessage,
MappingNotify
Various constants for use in X calls and event processing.
RENDITION
Rendition bitsets contain information about colour, font, font styles
and similar information for each screen cell.
The following "macros" deal with changes in rendition sets. You should
never just create a bitset, you should always modify an existing one,
as they contain important information required for correct operation of
rxvt-unicode.
$rend = urxvt::DEFAULT_RSTYLE
Returns the default rendition, as used when the terminal is
starting up or being reset. Useful as a base to start when creating
renditions.
$rend = urxvt::OVERLAY_RSTYLE
Return the rendition mask used for overlays by default.
$rendbit = urxvt::RS_Bold, urxvt::RS_Italic, urxvt::RS_Blink,
urxvt::RS_RVid, urxvt::RS_Uline
Return the bit that enabled bold, italic, blink, reverse-video and
underline, respectively. To enable such a style, just logically OR
it into the bitset.
$foreground = urxvt::GET_BASEFG $rend
$background = urxvt::GET_BASEBG $rend
Return the foreground/background colour index, respectively.
$rend = urxvt::SET_FGCOLOR $rend, $new_colour
$rend = urxvt::SET_BGCOLOR $rend, $new_colour
$rend = urxvt::SET_COLOR $rend, $new_fg, $new_bg
Replace the foreground/background colour in the rendition mask with
the specified one.
$value = urxvt::GET_CUSTOM $rend
Return the "custom" value: Every rendition has 5 bits for use by
extensions. They can be set and changed as you like and are
initially zero.
$rend = urxvt::SET_CUSTOM $rend, $new_value
Change the custom value.
The "urxvt::term::extension" class
Each extension attached to a terminal object is represented by a
"urxvt::term::extension" object.
You can use these objects, which are passed to all callbacks to store
any state related to the terminal and extension instance.
The methods (And data members) documented below can be called on
extension objects, in addition to call methods documented for the
<urxvt::term> class.
$urxvt_term = $self->{term}
Returns the "urxvt::term" object associated with this instance of
the extension. This member must not be changed in any way.
$self->enable ($hook_name => $cb[, $hook_name => $cb..])
Dynamically enable the given hooks (named without the "on_" prefix)
for this extension, replacing any hook previously installed via
"enable" in this extension.
This is useful when you want to overwrite time-critical hooks only
temporarily.
To install additional callbacks for the same hook, you can use the
"on" method of the "urxvt::term" class.
$self->disable ($hook_name[, $hook_name..])
Dynamically disable the given hooks.
$guard = $self->on ($hook_name => $cb[, $hook_name => $cb..])
Similar to the "enable" enable, but installs additional callbacks
for the given hook(s) (that is, it doesn't replace existing
callbacks), and returns a guard object. When the guard object is
destroyed the callbacks are disabled again.
$self->bind_action ($hotkey, $action)
$self->x_resource ($pattern)
$self->x_resource_boolean ($pattern)
These methods support an additional "%" prefix for $action or
$pattern when called on an extension object, compared to the
"urxvt::term" methods of the same name - see the description of
these methods in the "urxvt::term" class for details.
The "urxvt::anyevent" Class
The sole purpose of this class is to deliver an interface to the
"AnyEvent" module - any module using it will work inside urxvt without
further programming. The only exception is that you cannot wait on
condition variables, but non-blocking condvar use is ok.
In practical terms this means is that you cannot use blocking APIs, but
the non-blocking variant should work.
The "urxvt::term" Class
$term = new urxvt::term $envhashref, $rxvtname, [arg...]
Creates a new terminal, very similar as if you had started it with
system "$rxvtname, arg...". $envhashref must be a reference to a
%ENV-like hash which defines the environment of the new terminal.
Croaks (and probably outputs an error message) if the new instance
couldn't be created. Returns "undef" if the new instance didn't
initialise perl, and the terminal object otherwise. The "init" and
"start" hooks will be called before this call returns, and are free
to refer to global data (which is race free).
$term->destroy
Destroy the terminal object (close the window, free resources
etc.). Please note that urxvt will not exit as long as any event
watchers (timers, io watchers) are still active.
$term->exec_async ($cmd[, @args])
Works like the combination of the "fork"/"exec" builtins, which
executes ("starts") programs in the background. This function takes
care of setting the user environment before exec'ing the command
(e.g. "PATH") and should be preferred over explicit calls to "exec"
or "system".
Returns the pid of the subprocess or "undef" on error.
$isset = $term->option ($optval[, $set])
Returns true if the option specified by $optval is enabled, and
optionally change it. All option values are stored by name in the
hash %urxvt::OPTION. Options not enabled in this binary are not in
the hash.
Here is a likely non-exhaustive list of option names, please see
the source file /src/optinc.h to see the actual list:
borderLess buffered console cursorBlink cursorUnderline hold iconic
insecure intensityStyles iso14755 iso14755_52 jumpScroll loginShell
mapAlert meta8 mouseWheelScrollPage override_redirect pastableTabs
pointerBlank reverseVideo scrollBar scrollBar_floating scrollBar_right
scrollTtyKeypress scrollTtyOutput scrollWithBuffer secondaryScreen
secondaryScroll skipBuiltinGlyphs skipScroll transparent tripleclickwords
urgentOnBell utmpInhibit visualBell
$value = $term->resource ($name[, $newval])
Returns the current resource value associated with a given name and
optionally sets a new value. Setting values is most useful in the
"init" hook. Unset resources are returned and accepted as "undef".
The new value must be properly encoded to a suitable character
encoding before passing it to this method. Similarly, the returned
value may need to be converted from the used encoding to text.
Resource names are as defined in src/rsinc.h. Colours can be
specified as resource names of the form "color+<index>", e.g.
"color+5". (will likely change).
Please note that resource strings will currently only be freed when
the terminal is destroyed, so changing options frequently will eat
memory.
Here is a likely non-exhaustive list of resource names, not all of
which are supported in every build, please see the source file
/src/rsinc.h to see the actual list:
answerbackstring backgroundPixmap backspace_key blurradius
boldFont boldItalicFont borderLess buffered chdir color cursorBlink
cursorUnderline cutchars delete_key depth display_name embed ext_bwidth
fade font geometry hold iconName iconfile imFont imLocale inputMethod
insecure int_bwidth intensityStyles iso14755 iso14755_52 italicFont
jumpScroll letterSpace lineSpace loginShell mapAlert meta8 modifier
mouseWheelScrollPage name override_redirect pastableTabs path perl_eval
perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay
preeditType print_pipe pty_fd reverseVideo saveLines scrollBar
scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness
scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle
secondaryScreen secondaryScroll shade skipBuiltinGlyphs skipScroll
term_name title transient_for transparent tripleclickwords urgentOnBell
utmpInhibit visualBell
$value = $term->x_resource ($pattern)
Returns the X-Resource for the given pattern, excluding the program
or class name, i.e. "$term->x_resource ("boldFont")" should return
the same value as used by this instance of rxvt-unicode. Returns
"undef" if no resource with that pattern exists.
Extensions that define extra resources also need to call this
method to access their values.
If the method is called on an extension object (basically, from an
extension), then the special prefix "%." will be replaced by the
name of the extension and a dot, and the lone string "%" will be
replaced by the extension name itself. This makes it possible to
code extensions so you can rename them and get a new set of
resources without having to change the actual code.
This method should only be called during the "on_start" hook, as
there is only one resource database per display, and later
invocations might return the wrong resources.
$value = $term->x_resource_boolean ($pattern)
Like "x_resource", above, but interprets the string value as a
boolean and returns 1 for true values, 0 for false values and
"undef" if the resource or option isn't specified.
You should always use this method to parse boolean resources.
$action = $term->lookup_keysym ($keysym, $state)
Returns the action bound to key combination "($keysym, $state)", if
a binding for it exists, and "undef" otherwise.
$success = $term->bind_action ($key, $action)
Adds a key binding exactly as specified via a "keysym" resource.
See the "keysym" resource in the urxvt(1) manpage.
To add default bindings for actions, an extension should call
"->bind_action" in its "init" hook for every such binding. Doing it
in the "init" hook allows users to override or remove the binding
again.
Example: the "searchable-scrollback" by default binds itself on
"Meta-s", using "$self->bind_action", which calls
"$term->bind_action".
sub init {
my ($self) = @_;
$self->bind_action ("M-s" => "%:start");
}
$rend = $term->rstyle ([$new_rstyle])
Return and optionally change the current rendition. Text that is
output by the terminal application will use this style.
($row, $col) = $term->screen_cur ([$row, $col])
Return the current coordinates of the text cursor position and
optionally set it (which is usually bad as applications don't
expect that).
($row, $col) = $term->selection_mark ([$row, $col])
($row, $col) = $term->selection_beg ([$row, $col])
($row, $col) = $term->selection_end ([$row, $col])
Return the current values of the selection mark, begin or end
positions.
When arguments are given, then the selection coordinates are set to
$row and $col, and the selection screen is set to the current
screen.
$screen = $term->selection_screen ([$screen])
Returns the current selection screen, and then optionally sets it.
$term->selection_make ($eventtime[, $rectangular])
Tries to make a selection as set by "selection_beg" and
"selection_end". If $rectangular is true (default: false), a
rectangular selection will be made. This is the preferred function
to make a selection.
$success = $term->selection_grab ($eventtime[, $clipboard])
Try to acquire ownership of the primary (clipboard if $clipboard is
true) selection from the server. The corresponding text can be set
with the next method. No visual feedback will be given. This
function is mostly useful from within "on_sel_grab" hooks.
$oldtext = $term->selection ([$newtext, $clipboard])
Return the current selection (clipboard if $clipboard is true) text
and optionally replace it by $newtext.
$term->selection_clear ([$clipboard])
Revoke ownership of the primary (clipboard if $clipboard is true)
selection.
$term->overlay_simple ($x, $y, $text)
Create a simple multi-line overlay box. See the next method for
details.
$term->overlay ($x, $y, $width, $height[, $rstyle[, $border]])
Create a new (empty) overlay at the given position with the given
width/height. $rstyle defines the initial rendition style (default:
"OVERLAY_RSTYLE").
If $border is 2 (default), then a decorative border will be put
around the box.
If either $x or $y is negative, then this is counted from the
right/bottom side, respectively.
This method returns an urxvt::overlay object. The overlay will be
visible as long as the perl object is referenced.
The methods currently supported on "urxvt::overlay" objects are:
$overlay->set ($x, $y, $text[, $rend])
Similar to "$term->ROW_t" and "$term->ROW_r" in that it puts
text in rxvt-unicode's special encoding and an array of
rendition values at a specific position inside the overlay.
If $rend is missing, then the rendition will not be changed.
$overlay->hide
If visible, hide the overlay, but do not destroy it.
$overlay->show
If hidden, display the overlay again.
$popup = $term->popup ($event)
Creates a new "urxvt::popup" object that implements a popup menu.
The $event must be the event causing the menu to pop up (a button
event, currently).
$cellwidth = $term->strwidth ($string)
Returns the number of screen-cells this string would need.
Correctly accounts for wide and combining characters.
$octets = $term->locale_encode ($string)
Convert the given text string into the corresponding locale
encoding.
$string = $term->locale_decode ($octets)
Convert the given locale-encoded octets into a perl string.
$term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle])
XORs the rendition values in the given span with the provided value
(default: "RS_RVid"), which MUST NOT contain font styles. Useful in
refresh hooks to provide effects similar to the selection.
$term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[,
$rstyle1[, $rstyle2]])
Similar to "scr_xor_span", but xors a rectangle instead. Trailing
whitespace will additionally be xored with the $rstyle2, which
defaults to "RS_RVid | RS_Uline", which removes reverse video again
and underlines it instead. Both styles MUST NOT contain font
styles.
$term->scr_bell
Ring the bell!
$term->scr_add_lines ($string)
Write the given text string to the screen, as if output by the
application running inside the terminal. It may not contain command
sequences (escape codes - see "cmd_parse" for that), but is free to
use line feeds, carriage returns and tabs. The string is a normal
text string, not in locale-dependent encoding.
Normally its not a good idea to use this function, as programs
might be confused by changes in cursor position or scrolling. Its
useful inside a "on_add_lines" hook, though.
$term->scr_change_screen ($screen)
Switch to given screen - 0 primary, 1 secondary.
$term->cmd_parse ($octets)
Similar to "scr_add_lines", but the argument must be in the locale-
specific encoding of the terminal and can contain command sequences
(escape codes) that will be interpreted.
$term->tt_write ($octets)
Write the octets given in $octets to the tty (i.e. as user input to
the program, see "cmd_parse" for the opposite direction). To pass
characters instead of octets, you should convert your strings first
to the locale-specific encoding using "$term->locale_encode".
$term->tt_write_user_input ($octets)
Like "tt_write", but should be used when writing strings in
response to the user pressing a key, to invoke the additional
actions requested by the user for that case ("tt_write" doesn't do
that).
The typical use case would be inside "on_action" hooks.
$term->tt_paste ($octets)
Write the octets given in $octets to the tty as a paste, converting
NL to CR and bracketing the data with control sequences if
bracketed paste mode is set.
$old_events = $term->pty_ev_events ([$new_events])
Replaces the event mask of the pty watcher by the given event mask.
Can be used to suppress input and output handling to the pty/tty.
See the description of "urxvt::timer->events". Make sure to always
restore the previous value.
$fd = $term->pty_fd
Returns the master file descriptor for the pty in use, or "-1" if
no pty is used.
$windowid = $term->parent
Return the window id of the toplevel window.
$windowid = $term->vt
Return the window id of the terminal window.
$term->vt_emask_add ($x_event_mask)
Adds the specified events to the vt event mask. Useful e.g. when
you want to receive pointer events all the times:
$term->vt_emask_add (urxvt::PointerMotionMask);
$term->set_urgency ($set)
Enable/disable the urgency hint on the toplevel window.
$term->focus_in
$term->focus_out
$term->key_press ($state, $keycode[, $time])
$term->key_release ($state, $keycode[, $time])
Deliver various fake events to to terminal.
$window_width = $term->width ([$new_value])
$window_height = $term->height ([$new_value])
$font_width = $term->fwidth ([$new_value])
$font_height = $term->fheight ([$new_value])
$font_ascent = $term->fbase ([$new_value])
$terminal_rows = $term->nrow ([$new_value])
$terminal_columns = $term->ncol ([$new_value])
$has_focus = $term->focus ([$new_value])
$is_mapped = $term->mapped ([$new_value])
$max_scrollback = $term->saveLines ([$new_value])
$nrow_plus_saveLines = $term->total_rows ([$new_value])
$topmost_scrollback_row = $term->top_row ([$new_value])
Return various integers describing terminal characteristics. If an
argument is given, changes the value and returns the previous one.
$x_display = $term->display_id
Return the DISPLAY used by rxvt-unicode.
$lc_ctype = $term->locale
Returns the LC_CTYPE category string used by this rxvt-unicode.
$env = $term->env
Returns a copy of the environment in effect for the terminal as a
hashref similar to "\%ENV".
@envv = $term->envv
Returns the environment as array of strings of the form
"VAR=VALUE".
@argv = $term->argv
Return the argument vector as this terminal, similar to @ARGV, but
includes the program name as first element.
$modifiermask = $term->ModLevel3Mask
$modifiermask = $term->ModMetaMask
$modifiermask = $term->ModNumLockMask
Return the modifier masks corresponding to the "ISO Level 3 Shift"
(often AltGr), the meta key (often Alt) and the num lock key, if
applicable.
$screen = $term->current_screen
Returns the currently displayed screen (0 primary, 1 secondary).
$cursor_is_hidden = $term->hidden_cursor
Returns whether the cursor is currently hidden or not.
$view_start = $term->view_start ([$newvalue])
Returns the row number of the topmost displayed line. Maximum value
is 0, which displays the normal terminal contents. Lower values
scroll this many lines into the scrollback buffer.
$term->want_refresh
Requests a screen refresh. At the next opportunity, rxvt-unicode
will compare the on-screen display with its stored representation.
If they differ, it redraws the differences.
Used after changing terminal contents to display them.
$term->refresh_check
Checks if a refresh has been requested and, if so, schedules one.
$text = $term->ROW_t ($row_number[, $new_text[, $start_col]])
Returns the text of the entire row with number $row_number. Row
"$term->top_row" is the topmost terminal line, row "$term->nrow-1"
is the bottommost terminal line. Nothing will be returned if a
nonexistent line is requested.
If $new_text is specified, it will replace characters in the
current line, starting at column $start_col (default 0), which is
useful to replace only parts of a line. The font index in the
rendition will automatically be updated.
$text is in a special encoding: tabs and wide characters that use
more than one cell when displayed are padded with $urxvt::NOCHAR
(chr 65535) characters. Characters with combining characters and
other characters that do not fit into the normal text encoding will
be replaced with characters in the private use area.
You have to obey this encoding when changing text. The advantage is
that "substr" and similar functions work on screen cells and not on
characters.
The methods "$term->special_encode" and "$term->special_decode" can
be used to convert normal strings into this encoding and vice
versa.
$rend = $term->ROW_r ($row_number[, $new_rend[, $start_col]])
Like "$term->ROW_t", but returns an arrayref with rendition
bitsets. Rendition bitsets contain information about colour, font,
font styles and similar information. See also "$term->ROW_t".
When setting rendition, the font mask will be ignored.
See the section on RENDITION, above.
$length = $term->ROW_l ($row_number[, $new_length])
Returns the number of screen cells that are in use ("the line
length"). Unlike the urxvt core, this returns "$term->ncol" if the
line is joined with the following one.
$bool = $term->is_longer ($row_number)
Returns true if the row is part of a multiple-row logical "line"
(i.e. joined with the following row), which means all characters
are in use and it is continued on the next row (and possibly a
continuation of the previous row(s)).
$line = $term->line ($row_number)
Create and return a new "urxvt::line" object that stores
information about the logical line that row $row_number is part of.
It supports the following methods:
$text = $line->t ([$new_text])
Returns or replaces the full text of the line, similar to
"ROW_t"
$rend = $line->r ([$new_rend])
Returns or replaces the full rendition array of the line,
similar to "ROW_r"
$length = $line->l
Returns the length of the line in cells, similar to "ROW_l".
$rownum = $line->beg
$rownum = $line->end
Return the row number of the first/last row of the line,
respectively.
$offset = $line->offset_of ($row, $col)
Returns the character offset of the given row|col pair within
the logical line. Works for rows outside the line, too, and
returns corresponding offsets outside the string.
($row, $col) = $line->coord_of ($offset)
Translates a string offset into terminal coordinates again.
$text = $term->special_encode $string
Converts a perl string into the special encoding used by rxvt-
unicode, where one character corresponds to one screen cell. See
"$term->ROW_t" for details.
$string = $term->special_decode $text
Converts rxvt-unicodes text representation into a perl string. See
"$term->ROW_t" for details.
$success = $term->grab_button ($button, $modifiermask[, $window =
$term->vt])
$term->ungrab_button ($button, $modifiermask[, $window = $term->vt])
Register/unregister a synchronous button grab. See the XGrabButton
manpage.
$success = $term->grab ($eventtime[, $sync])
Calls XGrabPointer and XGrabKeyboard in asynchronous (default) or
synchronous ($sync is true). Also remembers the grab timestamp.
$term->allow_events_async
Calls XAllowEvents with AsyncBoth for the most recent grab.
$term->allow_events_sync
Calls XAllowEvents with SyncBoth for the most recent grab.
$term->allow_events_replay
Calls XAllowEvents with both ReplayPointer and ReplayKeyboard for
the most recent grab.
$term->ungrab
Calls XUngrabPointer and XUngrabKeyboard for the most recent grab.
Is called automatically on evaluation errors, as it is better to
lose the grab in the error case as the session.
$atom = $term->XInternAtom ($atom_name[, $only_if_exists])
$atom_name = $term->XGetAtomName ($atom)
@atoms = $term->XListProperties ($window)
($type,$format,$octets) = $term->XGetWindowProperty ($window,
$property)
$term->XChangeProperty ($window, $property, $type, $format, $octets)
$term->XDeleteProperty ($window, $property)
$window = $term->DefaultRootWindow
$term->XReparentWindow ($window, $parent, [$x, $y])
$term->XMapWindow ($window)
$term->XUnmapWindow ($window)
$term->XMoveResizeWindow ($window, $x, $y, $width, $height)
($x, $y, $child_window) = $term->XTranslateCoordinates ($src, $dst, $x,
$y)
$term->XChangeInput ($window, $add_events[, $del_events])
$keysym = $term->XStringToKeysym ($string)
$string = $term->XKeysymToString ($keysym)
Various X or X-related functions. The $term object only serves as
the source of the display, otherwise those functions map more-or-
less directly onto the X functions of the same name.
The "urxvt::popup" Class
$popup->add_title ($title)
Adds a non-clickable title to the popup.
$popup->add_separator ([$sepchr])
Creates a separator, optionally using the character given as
$sepchr.
$popup->add_button ($text, $cb)
Adds a clickable button to the popup. $cb is called whenever it is
selected.
$popup->add_toggle ($text, $initial_value, $cb)
Adds a toggle/checkbox item to the popup. The callback gets called
whenever it gets toggled, with a boolean indicating its new value
as its first argument.
$popup->show
Displays the popup (which is initially hidden).
The "urxvt::timer" Class
This class implements timer watchers/events. Time is represented as a
fractional number of seconds since the epoch. Example:
$term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0);
$term->{timer} = urxvt::timer
->new
->interval (1)
->cb (sub {
$term->{overlay}->set (0, 0,
sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]);
});
$timer = new urxvt::timer
Create a new timer object in started state. It is scheduled to fire
immediately.
$timer = $timer->cb (sub { my ($timer) = @_; ... })
Set the callback to be called when the timer triggers.
$timer = $timer->set ($tstamp[, $interval])
Set the time the event is generated to $tstamp (and optionally
specifies a new $interval).
$timer = $timer->interval ($interval)
By default (and when $interval is 0), the timer will automatically
stop after it has fired once. If $interval is non-zero, then the
timer is automatically rescheduled at the given intervals.
$timer = $timer->start
Start the timer.
$timer = $timer->start ($tstamp[, $interval])
Set the event trigger time to $tstamp and start the timer.
Optionally also replaces the interval.
$timer = $timer->after ($delay[, $interval])
Like "start", but sets the expiry timer to c<urxvt::NOW + $delay>.
$timer = $timer->stop
Stop the timer.
The "urxvt::iow" Class
This class implements io watchers/events. Example:
$term->{socket} = ...
$term->{iow} = urxvt::iow
->new
->fd (fileno $term->{socket})
->events (urxvt::EV_READ)
->start
->cb (sub {
my ($iow, $revents) = @_;
# $revents must be 1 here, no need to check
sysread $term->{socket}, my $buf, 8192
or end-of-file;
});
$iow = new urxvt::iow
Create a new io watcher object in stopped state.
$iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... })
Set the callback to be called when io events are triggered.
$reventmask is a bitset as described in the "events" method.
$iow = $iow->fd ($fd)
Set the file descriptor (not handle) to watch.
$iow = $iow->events ($eventmask)
Set the event mask to watch. The only allowed values are
"urxvt::EV_READ" and "urxvt::EV_WRITE", which might be ORed
together, or "urxvt::EV_NONE".
$iow = $iow->start
Start watching for requested events on the given handle.
$iow = $iow->stop
Stop watching for events on the given file handle.
The "urxvt::iw" Class
This class implements idle watchers, that get called automatically when
the process is idle. They should return as fast as possible, after
doing some useful work.
$iw = new urxvt::iw
Create a new idle watcher object in stopped state.
$iw = $iw->cb (sub { my ($iw) = @_; ... })
Set the callback to be called when the watcher triggers.
$timer = $timer->start
Start the watcher.
$timer = $timer->stop
Stop the watcher.
The "urxvt::pw" Class
This class implements process watchers. They create an event whenever a
process exits, after which they stop automatically.
my $pid = fork;
...
$term->{pw} = urxvt::pw
->new
->start ($pid)
->cb (sub {
my ($pw, $exit_status) = @_;
...
});
$pw = new urxvt::pw
Create a new process watcher in stopped state.
$pw = $pw->cb (sub { my ($pw, $exit_status) = @_; ... })
Set the callback to be called when the timer triggers.
$pw = $timer->start ($pid)
Tells the watcher to start watching for process $pid.
$pw = $pw->stop
Stop the watcher.
ENVIRONMENT
URXVT_PERL_VERBOSITY
This variable controls the verbosity level of the perl extension.
Higher numbers indicate more verbose output.
== 0 - fatal messages
>= 3 - script loading and management
>=10 - all called hooks
>=11 - hook return values
AUTHOR
Marc Lehmann <schmorp@schmorp.de>
http://software.schmorp.de/pkg/rxvt-unicode
9.22 2016-02-18 urxvtperl(3)
