Graphics.UI.Gtk.Layout.Alignment

A widget which controls the alignment and size of its child

Detail

The 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 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.

Class Hierarchy

| GObject
| +----Object
| +----Widget
| +----Container
| +----Bin
| +----Alignment

Types

data Alignment

Instances

Eq Alignment

Ord Alignment

GObjectClass Alignment

AlignmentClass Alignment

BinClass Alignment

ContainerClass Alignment

WidgetClass Alignment

class BinClass o => AlignmentClass o

Instances

AlignmentClass Alignment

castToAlignment :: GObjectClass obj => obj -> Alignment

gTypeAlignment :: GType

toAlignment :: AlignmentClass o => o -> Alignment

Constructors

alignmentNew

Arguments

:: Float

xalign - the horizontal alignment of the child widget, from 0 (left) to 1 (right).

-> Float

yalign - the vertical alignment of the child widget, from 0 (top) to 1 (bottom).

-> Float

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 Alignment.

-> Float

yscale - the amount that the child widget expands vertically to fill up unused space, from 0 to 1. The values are similar to xscale.

-> IO Alignment

Creates a new Alignment.

Methods

alignmentSet

Arguments

:: AlignmentClass self

=> self

-> Float

xalign - the horizontal alignment of the child widget, from 0 (left) to 1 (right).

-> Float

yalign - the vertical alignment of the child widget, from 0 (top) to 1 (bottom).

-> Float

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 Alignment.

-> Float

yscale - the amount that the child widget expands vertically to fill up unused space, from 0 to 1. The values are similar to xscale.

-> IO ()

Sets the Alignment values.

alignmentSetPadding

Arguments

:: AlignmentClass self

=> self

-> Int

paddingTop - the padding at the top of the widget

-> Int

paddingBottom - the padding at the bottom of the widget

-> Int

paddingLeft - the padding at the left of the widget

-> Int

paddingRight - the padding at the right of the widget.

-> IO ()

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.

• Available since Gtk+ version 2.4

alignmentGetPadding

Arguments

:: AlignmentClass self

=> self

-> IO (Int, Int, Int, Int)

(paddingTop, paddingBottom, paddingLeft, paddingRight) - the padding at the top, bottom, left and right of the widget.

Gets the padding on the different sides of the widget. See alignmentSetPadding.

• Available since Gtk+ version 2.4

Attributes

alignmentXAlign :: AlignmentClass self => Attr self Float

Horizontal position of child in available space. 0.0 is left aligned, 1.0 is right aligned.

Allowed values: [0,1]

Default value: 0.5

alignmentYAlign :: AlignmentClass self => Attr self Float

Vertical position of child in available space. 0.0 is top aligned, 1.0 is bottom aligned.

Allowed values: [0,1]

Default value: 0.5

alignmentXScale :: AlignmentClass self => Attr self Float

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.

Allowed values: [0,1]

Default value: 1

alignmentYScale :: AlignmentClass self => Attr self Float

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.

Allowed values: [0,1]

Default value: 1

alignmentTopPadding :: AlignmentClass self => Attr self Int

The padding to insert at the top of the widget.

Allowed values: <= (maxBound :: Int)

Default value: 0

alignmentBottomPadding :: AlignmentClass self => Attr self Int

The padding to insert at the bottom of the widget.

Allowed values: <= (maxBound :: Int)

Default value: 0

alignmentLeftPadding :: AlignmentClass self => Attr self Int

The padding to insert at the left of the widget.

Allowed values: <= (maxBound :: Int)

Default value: 0

alignmentRightPadding :: AlignmentClass self => Attr self Int

The padding to insert at the right of the widget.

Allowed values: <= (maxBound :: Int)

Default value: 0