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.\" ========================================================================
.\"
.IX Title "Tickit::OneLineWidget 3pm"
.TH Tickit::OneLineWidget 3pm "2020-11-04" "perl v5.30.3" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH "NAME"
"Tickit::OneLineWidget" \- a widget which occupies only one line
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This subclass of Tickit::Widget provides a convenient base for widgets that
only want to occupy a single line of the window. It provides the \f(CW\*(C`valign\*(C'\fR
accessor to control alignment of the widget's content within the window, and
a \f(CW\*(C`render\*(C'\fR method that clears all the unused lines of the window. This class
also provides the \f(CW\*(C`lines\*(C'\fR method, returning a constant value of \f(CW1\fR.
.SH "ACCESSORS"
.IX Header "ACCESSORS"
.SS "valign"
.IX Subsection "valign"
.Vb 1
\&   $valign = $widget\->valign
.Ve
.SS "set_valign"
.IX Subsection "set_valign"
.Vb 1
\&   $widget\->set_valign( $valign )
.Ve
.PP
Accessor for vertical alignment value.
.PP
Gives a value in the range from \f(CW0.0\fR to \f(CW1.0\fR to align the content display
within the window. If the window is taller than one line, it will be aligned
according to this value; with \f(CW0.0\fR at the top, \f(CW1.0\fR at the bottom, and
other values inbetween.
.PP
See also Tickit::WidgetRole::Alignable
.SH "SUBCLASS METHODS"
.IX Header "SUBCLASS METHODS"
Because this is an abstract class, the constructor must be called on a
subclass which implements the following methods.
.SS "render_line"
.IX Subsection "render_line"
.Vb 1
\&   $widget\->render_line
.Ve
.PP
Called to redraw the widget's content to its window. When invoked, the window
cursor will already be in column \f(CW0\fR of the required line of the window, as
determined by the \f(CW\*(C`valign\*(C'\fR value.
.SH "AUTHOR"
.IX Header "AUTHOR"
Paul Evans <leonerd@leonerd.org.uk>