Struct gtk4::CenterBox[][src]

pub struct CenterBox(_);
Expand description

CenterBox arranges three children in a row, keeping the middle child centered as well as possible.

An example GtkCenterBox

To add children to CenterBox, use set_start_widget(), set_center_widget() and set_end_widget().

The sizing and positioning of children can be influenced with the align and expand properties of the children.

GtkCenterBox as GtkBuildable

The CenterBox implementation of the Buildable interface supports placing children in the 3 positions by specifying “start”, “center” or “end” as the “type” attribute of a <child> element.

CSS nodes

CenterBox uses a single CSS node with the name “box”,

The first child of the CenterBox will be allocated depending on the text direction, i.e. in left-to-right layouts it will be allocated on the left and in right-to-left layouts on the right.

In vertical orientation, the nodes of the children are arranged from top to bottom.

Accessibility

CenterBox uses the AccessibleRole::Group role.

Implements

WidgetExt, glib::ObjectExt, AccessibleExt, BuildableExt, ConstraintTargetExt, OrientableExt, WidgetExtManual, AccessibleExtManual

Implementations

Creates a new CenterBox.

Returns

the new CenterBox.

Creates a new builder-pattern struct instance to construct CenterBox objects.

This method returns an instance of CenterBoxBuilder which can be used to create CenterBox objects.

Gets the value set by set_baseline_position().

Returns

the baseline position

Gets the center widget, or None if there is none.

Returns

the center widget.

Gets the end widget, or None if there is none.

Returns

the end widget.

Gets the start widget, or None if there is none.

Returns

the start widget.

Sets the baseline position of a center box.

This affects only horizontal boxes with at least one baseline aligned child. If there is more vertical space available than requested, and the baseline is not allocated by the parent then position is used to allocate the baseline wrt. the extra space available.

position

a BaselinePosition

Sets the center widget.

To remove the existing center widget, pas None.

child

the new center widget, or None

Sets the end widget.

To remove the existing end widget, pass None.

child

the new end widget, or None

Sets the start widget.

To remove the existing start widget, pass None.

child

the new start widget, or None

Trait Implementations

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Returns the type identifier of Self.

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