Class

Gtk.CenterBox

Description [src]

final class Gtk.CenterBox : Gtk.Widget {
  /* No available fields */
}

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

An example GtkCenterBox

To add children to GtkCenterBox, use gtk_center_box_set_start_widget(), gtk_center_box_set_center_widget() and gtk_center_box_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 GtkCenterBox implementation of the GtkBuildable interface supports placing children in the 3 positions by specifying “start”, “center” or “end” as the “type” attribute of a element.

CSS nodes

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

The first child of the GtkCenterBox 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

GtkCenterBox uses the GTK_ACCESSIBLE_ROLE_GROUP role.

Hierarchy

Hierarchy for Gtk.CenterBox

Ancestors

Constructors

gtk_center_box_new

Creates a new GtkCenterBox.

Instance methods

gtk_center_box_get_baseline_position

Gets the value set by gtk_center_box_set_baseline_position().

gtk_center_box_get_center_widget

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

gtk_center_box_get_end_widget

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

gtk_center_box_get_start_widget

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

gtk_center_box_set_baseline_position

Sets the baseline position of a center box.

gtk_center_box_set_center_widget

Sets the center widget.

gtk_center_box_set_end_widget

Sets the end widget.

gtk_center_box_set_start_widget

Sets the start widget.

Methods inherited from GtkWidget (159)
Methods inherited from GtkAccessible (10)
gtk_accessible_get_accessible_role

Retrieves the GtkAccessibleRole for the given GtkAccessible.

gtk_accessible_reset_property

Resets the accessible property to its default value.

gtk_accessible_reset_relation

Resets the accessible relation to its default value.

gtk_accessible_reset_state

Resets the accessible state to its default value.

gtk_accessible_update_property

Updates a list of accessible properties.

gtk_accessible_update_property_value

Updates an array of accessible properties.

gtk_accessible_update_relation

Updates a list of accessible relations.

gtk_accessible_update_relation_value

Updates an array of accessible relations.

gtk_accessible_update_state

Updates a list of accessible states. See the GtkAccessibleState documentation for the value types of accessible states.

gtk_accessible_update_state_value

Updates an array of accessible states.

Methods inherited from GtkBuildable (1)
gtk_buildable_get_buildable_id

Gets the ID of the buildable object.

Methods inherited from GtkOrientable (2)
gtk_orientable_get_orientation

Retrieves the orientation of the orientable.

gtk_orientable_set_orientation

Sets the orientation of the orientable.

Properties

Gtk.CenterBox:baseline-position

The position of the baseline aligned widget if extra space is available.

Properties inherited from GtkWidget (34)
Gtk.Widget:can-focus

Whether the widget or any of its descendents can accept the input focus.

Gtk.Widget:can-target

Whether the widget can receive pointer events.

Gtk.Widget:css-classes

A list of css classes applied to this widget.

Gtk.Widget:css-name

The name of this widget in the CSS tree.

Gtk.Widget:cursor

The cursor used by widget.

Gtk.Widget:focus-on-click

Whether the widget should grab focus when it is clicked with the mouse.

Gtk.Widget:focusable

Whether this widget itself will accept the input focus.

Gtk.Widget:halign

How to distribute horizontal space if widget gets extra space.

Gtk.Widget:has-default

Whether the widget is the default widget.

Gtk.Widget:has-focus

Whether the widget has the input focus.

Gtk.Widget:has-tooltip

Enables or disables the emission of the ::query-tooltip signal on widget.

Gtk.Widget:height-request

Override for height request of the widget.

Gtk.Widget:hexpand

Whether to expand horizontally.

Gtk.Widget:hexpand-set

Whether to use the hexpand property.

Gtk.Widget:layout-manager

The GtkLayoutManager instance to use to compute the preferred size of the widget, and allocate its children.

Gtk.Widget:margin-bottom

Margin on bottom side of widget.

Gtk.Widget:margin-end

Margin on end of widget, horizontally.

Gtk.Widget:margin-start

Margin on start of widget, horizontally.

Gtk.Widget:margin-top

Margin on top side of widget.

Gtk.Widget:name

The name of the widget.

Gtk.Widget:opacity

The requested opacity of the widget.

Gtk.Widget:overflow

How content outside the widget’s content area is treated.

Gtk.Widget:parent

The parent widget of this widget.

Gtk.Widget:receives-default

Whether the widget will receive the default action when it is focused.

Gtk.Widget:root

The GtkRoot widget of the widget tree containing this widget.

Gtk.Widget:scale-factor

The scale factor of the widget.

Gtk.Widget:sensitive

Whether the widget responds to input.

Gtk.Widget:tooltip-markup

Sets the text of tooltip to be the given string, which is marked up with Pango markup.

Gtk.Widget:tooltip-text

Sets the text of tooltip to be the given string.

Gtk.Widget:valign

How to distribute vertical space if widget gets extra space.

Gtk.Widget:vexpand

Whether to expand vertically.

Gtk.Widget:vexpand-set

Whether to use the vexpand property.

Gtk.Widget:visible

Whether the widget is visible.

Gtk.Widget:width-request

Override for width request of the widget.

Properties inherited from GtkAccessible (1)
Gtk.Accessible:accessible-role

The accessible role of the given GtkAccessible implementation.

Properties inherited from GtkOrientable (1)
Gtk.Orientable:orientation

The orientation of the orientable.

Class structure

struct GtkCenterBoxClass {
  /* no available fields */
}