Tickit::WidgetRole::Alignable - implement widgets with adjustable alignment
Mixing this parametric role into a Tickit::Widget subclass adds behaviour to implement alignment of content within a possibly-larger space.
The following methods are provided parametrically on the caller package when the module is imported by
use Tickit::WidgetRole::Alignable name => NAME, style => STYLE, reshape => RESHAPE
The parameters are
- name => STRING
Optional. The name to use for
NAMEin the following generated methods. Defaults to
'align'if not provided.
- dir => "h" or "v"
Optional. The direction, horizontal or vertical, that the alignment represents. Used to parse symbolic names into fractions. Defaults to
'h'if not provided.
- reshape => BOOL
Optional. If true, the widget will be reshaped after the value has been set by calling the
reshapemethod. If false or absent then it will just be redrawn by calling
$align = $widget->NAME
Return the current alignment value
$widget->set_NAME( $value )
Set the new alignment value
Gives a value in the range from
1.0 to align the content display within the window.
For vertical direction alignments, the symbolic values
bottom can be supplied instead of
For horizontal direction alignments, the symbolic values
right can be supplied instead of
( $before, $alloc, $after ) = $widget->_NAME_allocation( $value, $total )
Returns a list of three integers created by aligning the
$value to the given alignment position within the
$total. See also
align in Tickit::Utils.
Paul Evans <email@example.com>