NAME

Tickit - Terminal Interface Construction KIT

SYNOPSIS

 use Tickit;
 use Tickit::Widget::Box;
 use Tickit::Widget::Static;

 my $box = Tickit::Widget::Box->new(
    h_border => 4,
    v_border => 2,
    bg       => "green",
    child    => Tickit::Widget::Static->new(
       text     => "Hello, world!",
       bg       => "black",
       align    => "centre",
       valign   => "middle",
    ),
 );

 Tickit->new( root => $box )->run;

DESCRIPTION

Tickit is a high-level toolkit for creating full-screen terminal-based interactive programs. It allows programs to be written in an abstracted way, working with a tree of widget objects, to represent the layout of the interface and implement its behaviours.

Its supported terminal features includes a rich set of rendering attributes (bold, underline, italic, 256-colours, etc), support for mouse including wheel and position events above the 224th column and arbitrary modified key input via libtermkey (all of these will require a supporting terminal as well). It also supports having multiple instances and non-blocking or asynchronous control.

At the current version, this is a Perl distribution which contains and XS and C implementation of the lower levels (Tickit::Term and Tickit::Pen), and implements the higher levels (Tickit::Window and Tickit::Widget) in pure perl. The XS parts are supported by libtickit, either from the installed library, or using a bundled copy compiled at build time. It is intended that eventually the Window layer will be rewritten in XS and C instead.

CONSTRUCTOR

$tickit = Tickit->new( %args )

Constructs a new Tickit framework container object.

Takes the following named arguments at construction time:

term_in => IO

IO handle for terminal input. Will default to STDIN.

term_out => IO

IO handle for terminal output. Will default to STDOUT.

UTF8 => BOOL

If defined, overrides locale detection to enable or disable UTF-8 mode. If not defined then this will be detected from the locale by using Perl's ${^UTF8LOCALE} variable.

root => Tickit::Widget

If defined, sets the root widget using set_root_widget to the one specified.

METHODS

$tickit->later( $code )

Runs the given CODE reference at some time soon in the future. It will not be invoked yet, but will be invoked at some point before the next round of input events are processed.

$term = $tickit->term

Returns the underlying Tickit::Term object.

$cols = $tickit->cols

$lines = $tickit->lines

Query the current size of the terminal. Will be cached and updated on receipt of SIGWINCH signals.

$tickit->bind_key( $key, $code )

Installs a callback to invoke if the given key is pressed, overwriting any previous callback for the same key. The code block is invoked as

 $code->( $tickit, $key )

If $code is missing or undef, any existing callback is removed.

As a convenience for the common application use case, the Ctrl-C key is bound to the stop method.

To remove this binding, simply bind another callback, or remove the binding entirely by setting undef.

$tickit->rootwin

Returns the root Tickit::Window.

$tickit->set_root_widget( $widget )

Sets the root widget for the application's display. This must be a subclass of Tickit::Widget.

$tickit->setup_term

Set up the screen and generally prepare to start running

$tickit->teardown_term

Shut down the screen after running

$tickit->tick

Run a single round of IO events. Does not call setup_term or teardown_term.

$tickit->run

Calls the setup_term method, then processes IO events until stopped, by the stop method, SIGINT, SIGTERM or the Ctrl-C key. Then runs the teardown_term method, and returns.

$tickit->stop

Causes a currently-running run method to stop processing events and return.

AUTHOR

Paul Evans <leonerd@leonerd.org.uk>

cpanm Tickit

perl -MCPAN -e shell
install Tickit