VisibilityDetectorController class
A VisibilityDetectorController is a singleton object that can perform actions and change configuration for all VisibilityDetector widgets.
Constructors
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- updateInterval ↔ Duration
-
The minimum amount of time to wait between firing batches of visibility
callbacks.
getter/setter pair
Methods
-
forget(
Key key) → void -
Forgets any pending visibility callbacks for the VisibilityDetector with
the given
key. -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
notifyNow(
) → void - Forces firing all pending visibility callbacks immediately.
-
toString(
) → String -
A string representation of this object.
inherited
-
widgetBoundsFor(
Key key) → Rect? -
Returns the last known bounds for the VisibilityDetector with the given
keyin global coordinates.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Properties
- instance → VisibilityDetectorController
-
no setter