Graphics.UI.Gtk.Layout.AspectFrame

The AspectFrame is useful when you want pack a widget so that it can resize but always retains the same aspect ratio. For instance, one might be drawing a small preview of a larger image. AspectFrame derives from Frame, so it can draw a label and a frame around the child. The frame will be "shrink-wrapped" to the size of the child.

Class Hierarchy

 |  GObject
 |   +----Object
 |         +----Widget
 |               +----Container
 |                     +----Bin
 |                           +----Frame
 |                                 +----AspectFrame

Types

data AspectFrame

Instances

AspectFrameClass AspectFrame

BinClass AspectFrame

ContainerClass AspectFrame

FrameClass AspectFrame

GObjectClass AspectFrame

ObjectClass AspectFrame

WidgetClass AspectFrame

class FrameClass o => AspectFrameClass o

Instances

AspectFrameClass AspectFrame

castToAspectFrame :: GObjectClass obj => obj -> AspectFrame

toAspectFrame :: AspectFrameClass o => o -> AspectFrame

Constructors

aspectFrameNew

:: Float	`xalign` - Horizontal alignment of the child within the allocation of the `AspectFrame`. This ranges from 0.0 (left aligned) to 1.0 (right aligned)
-> Float	`yalign` - Vertical alignment of the child within the allocation of the `AspectFrame`. This ranges from 0.0 (left aligned) to 1.0 (right aligned)
-> Maybe Float	`ratio` - The desired aspect ratio. If `Nothing` the aspect ratio is taken from the requistion of the child.
-> IO AspectFrame
Create a new `AspectFrame`. The frame may be augmented with a label which can be set by `frameSetLabel`.

Methods

aspectFrameSet

:: AspectFrameClass self
=> self
-> Float	`xalign` - Horizontal alignment of the child within the allocation of the `AspectFrame`. This ranges from 0.0 (left aligned) to 1.0 (right aligned)
-> Float	`yalign` - Vertical alignment of the child within the allocation of the `AspectFrame`. This ranges from 0.0 (left aligned) to 1.0 (right aligned)
-> Maybe Float	`ratio` - The desired aspect ratio. If `Nothing` the aspect ratio is taken from the requistion of the child.
-> IO ()
Set parameters for an existing `AspectFrame`.

Attributes

aspectFrameXAlign :: AspectFrameClass self => Attr self Float

X alignment of the child.

Allowed values: [0,1]

Default value: 0.5

aspectFrameYAlign :: AspectFrameClass self => Attr self Float

Y alignment of the child.

Allowed values: [0,1]

Default value: 0.5

aspectFrameRatio :: AspectFrameClass self => Attr self Float

Aspect ratio if obey_child is False.

Allowed values: [1e-04,10000]

Default value: 0.5

aspectFrameObeyChild :: AspectFrameClass self => Attr self Bool

Force aspect ratio to match that of the frame's child.

Default value: True

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