Center class
A widget that centers its child within itself.
This widget will be as big as possible if its dimensions are constrained and widthFactor and heightFactor are null. If a dimension is unconstrained and the corresponding size factor is null then the widget will match its child's size in that dimension. If a size factor is non-null then the corresponding dimension of this widget will be the product of the child's dimension and the size factor. For example if widthFactor is 2.0 then the width of this widget will always be twice its child's width.
See also:
- Align, which lets you arbitrarily position a child within itself, rather than just centering it.
- Row, a widget that displays its children in a horizontal array.
- Column, a widget that displays its children in a vertical array.
- Container, a convenience widget that combines common painting, positioning, and sizing widgets.
- The catalog of layout widgets.
Constructors
- Center.new({Key? key, double? widthFactor, double? heightFactor, Widget? child})
-
Creates a widget that centers its child.
const
Properties
- alignment → AlignmentGeometry
-
How to align the child.
finalinherited
- child → Widget?
-
The widget below this widget in the tree.
finalinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- heightFactor → double?
-
If non-null, sets its height to the child's height multiplied by this factor.
finalinherited
- key → Key?
-
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- widthFactor → double?
-
If non-null, sets its width to the child's width multiplied by this factor.
finalinherited
Methods
-
createRenderObject(
) → RenderObject< Align> -
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited