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90 GtkAlignment

A widget which controls the alignment and size of its child

90.1 Overview

The <gtk-alignment> widget controls the alignment and size of its child widget. It has four settings: xscale, yscale, xalign, and yalign.

The scale settings are used to specify how much the child widget should expand to fill the space allocated to the <gtk-alignment>. The values can range from 0 (meaning the child doesn't expand at all) to 1 (meaning the child expands to fill all of the available space).

The align settings are used to place the child widget within the available area. The values range from 0 (top or left) to 1 (bottom or right). Of course, if the scale settings are both set to 1, the alignment settings have no effect.

90.2 Usage

— Class: <gtk-alignment>

Derives from <gtk-bin>.

This class defines the following slots:

xalign
Horizontal position of child in available space. 0.0 is left aligned, 1.0 is right aligned
yalign
Vertical position of child in available space. 0.0 is top aligned, 1.0 is bottom aligned
xscale
If available horizontal space is bigger than needed for the child, how much of it to use for the child. 0.0 means none, 1.0 means all
yscale
If available vertical space is bigger than needed for the child, how much of it to use for the child. 0.0 means none, 1.0 means all
top-padding
The padding to insert at the top of the widget.
bottom-padding
The padding to insert at the bottom of the widget.
left-padding
The padding to insert at the left of the widget.
right-padding
The padding to insert at the right of the widget.
— Function: gtk-alignment-new (xalign float) (yalign float) (xscale float) (yscale float) ⇒  (ret <gtk-widget>)

Creates a new <gtk-alignment>.

xalign
the horizontal alignment of the child widget, from 0 (left) to 1 (right).
yalign
the vertical alignment of the child widget, from 0 (top) to 1 (bottom).
xscale
the amount that the child widget expands horizontally to fill up unused space, from 0 to 1. A value of 0 indicates that the child widget should never expand. A value of 1 indicates that the child widget will expand to fill all of the space allocated for the <gtk-alignment>.
yscale
the amount that the child widget expands vertically to fill up unused space, from 0 to 1. The values are similar to xscale.
ret
the new <gtk-alignment>.
— Function: gtk-alignment-set (self <gtk-alignment>) (xalign float) (yalign float) (xscale float) (yscale float)
— Method: set

Sets the <gtk-alignment> values.

alignment
a <gtk-alignment>.
xalign
the horizontal alignment of the child widget, from 0 (left) to 1 (right).
yalign
the vertical alignment of the child widget, from 0 (top) to 1 (bottom).
xscale
the amount that the child widget expands horizontally to fill up unused space, from 0 to 1. A value of 0 indicates that the child widget should never expand. A value of 1 indicates that the child widget will expand to fill all of the space allocated for the <gtk-alignment>.
yscale
the amount that the child widget expands vertically to fill up unused space, from 0 to 1. The values are similar to xscale.
— Function: gtk-alignment-get-padding (self <gtk-alignment>) ⇒  (padding_top unsigned-int) (padding_bottom unsigned-int) (padding_left unsigned-int) (padding_right unsigned-int)
— Method: get-padding

Gets the padding on the different sides of the widget. See gtk-alignment-set-padding.

alignment
a <gtk-alignment>
padding-top
location to store the padding for the top of the widget, or ‘#f
padding-bottom
location to store the padding for the bottom of the widget, or ‘#f
padding-left
location to store the padding for the left of the widget, or ‘#f
padding-right
location to store the padding for the right of the widget, or ‘#f

Since 2.4

— Function: gtk-alignment-set-padding (self <gtk-alignment>) (padding_top unsigned-int) (padding_bottom unsigned-int) (padding_left unsigned-int) (padding_right unsigned-int)
— Method: set-padding

Sets the padding on the different sides of the widget. The padding adds blank space to the sides of the widget. For instance, this can be used to indent the child widget towards the right by adding padding on the left.

alignment
a <gtk-alignment>
padding-top
the padding at the top of the widget
padding-bottom
the padding at the bottom of the widget
padding-left
the padding at the left of the widget
padding-right
the padding at the right of the widget.

Since 2.4