RasterWidgetController class Null safety
A controller for the RasterWidget that controls when the child image is displayed and when to regenerated the child image.
When the value of rasterize is true, the RasterWidget will paint the child widgets based on the RasterizeMode of the raster widget.
To force RasterWidget to recreate the child image, call clear.
- Inheritance
-
- Object
- ChangeNotifier
- RasterWidgetController
Constructors
- RasterWidgetController({bool rasterize = false})
- Create a new RasterWidgetController.
Properties
- hashCode → int
-
The hash code for this object.
read-onlyinherited
- hasListeners → bool
- Whether any listeners are currently registered.
- rasterize ↔ bool
-
Whether a rasterized version of this render objects child is drawn in
place of the child.
read / write
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
Methods
-
addListener(
VoidCallback listener) → void -
Register a closure to be called when the object changes.
inherited
-
clear(
) → void - Reset the raster held by any listening RasterWidget.
-
dispose(
) → void -
Discards any resources used by the object. After this is called, the
object is not in a usable state and should be discarded (calls to
addListener will throw after the object is disposed).
mustCallSuper">@mustCallSuperinherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited
-
notifyListeners(
) → void - Call all the registered listeners.
-
removeListener(
VoidCallback listener) → void -
Remove a previously registered closure from the list of closures that are
notified when the object changes.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited