A widget that applies a filter to the existing painted content and then paints child.
This effect is relatively expensive, especially if the filter is non-local, such as a blur.
- Inheritance
- Object
- Widget
- RenderObjectWidget
- SingleChildRenderObjectWidget
- BackdropFilter
Constructors
- BackdropFilter({Key key, @required ImageFilter filter, Widget child })
-
Creates a backdrop filter.
Properties
- filter → ImageFilter
-
The image filter to apply to the existing painted content before painting 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) → RenderBackdropFilter -
Creates an instance of the
RenderObjectclass that thisRenderObjectWidgetrepresents, using the configuration described by thisRenderObjectWidget. -
updateRenderObject(
BuildContext context, RenderBackdropFilter 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 -
debugFillDescription(
List<String> description) → void -
Add additional information to the given description for use by toString.
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