A widget that sizes its child to a fraction of the total available space. For more details about the layout algorithm, see RenderFractionallySizedOverflowBox.
See also:
- Align (which sizes itself based on its child's size and positions the child according to a FractionalOffset value)
- OverflowBox
- Inheritance
- Object
- Widget
- RenderObjectWidget
- SingleChildRenderObjectWidget
- FractionallySizedBox
Constructors
- FractionallySizedBox({Key key, FractionalOffset alignment: FractionalOffset.center, double widthFactor, double heightFactor, Widget child })
-
Creates a widget that sizes its child to a fraction of the total available space.
Properties
- alignment → FractionalOffset
-
How to align the child.
read-only - heightFactor → double
-
If non-null, the fraction of the incoming height given to the child.
read-only - widthFactor → double
-
If non-null, the fraction of the incoming width given to the child.
read-only - child → Widget
-
The widget below this widget in the tree.
read-only, inherited - hashCode → int
-
Get a hash code for this object.
read-only, inherited - key → Key
-
Controls how one widget replaces another widget in the tree.
read-only, inherited - runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Operators
-
operator ==(
other) → bool -
The equality operator.
inherited
Methods
-
createRenderObject(
BuildContext context) → RenderFractionallySizedOverflowBox -
Creates an instance of the
RenderObjectclass that thisRenderObjectWidgetrepresents, using the configuration described by thisRenderObjectWidget. -
debugFillDescription(
List<String> description) → void -
Add additional information to the given description for use by
toString. -
updateRenderObject(
BuildContext context, RenderFractionallySizedOverflowBox renderObject) → void -
Copies the configuration described by this
RenderObjectWidgetto the givenRenderObject, which will be of the same type as returned by this object'screateRenderObject. -
createElement(
) → SingleChildRenderObjectElement -
RenderObjectWidgets always inflate to a
RenderObjectElementsubclass.inherited -
didUnmountRenderObject(
RenderObject renderObject) → void -
A render object previously associated with this widget has been removed from the tree. The given RenderObject will be of the same type as returned by this object's createRenderObject.
inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited -
toString(
) → String -
Returns a string representation of this object.
inherited -
toStringShort(
) → String -
A short, textual description of this widget.
inherited