VisibilityInfo class

Data passed to the VisibilityDetector.onVisibilityChanged callback.

Annotations

Constructors

VisibilityInfo({required Key key, Size size = Size.zero, Rect visibleBounds = Rect.zero})
Constructor.
const
VisibilityInfo.fromRects({required Key key, required Rect widgetBounds, required Rect clipRect})
Constructs a VisibilityInfo from widget bounds and a corresponding clipping rectangle.
factory

Properties

hashCode int
The hash code for this object.
no setteroverride
key Key
The key for the corresponding VisibilityDetector widget.
final
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
size Size
The size of the widget.
final
visibleBounds Rect
The visible portion of the widget, in the widget's local coordinates.
final
visibleFraction double
A fraction in the range [0, 1] that represents what proportion of the widget is visible (assuming rectangular bounding boxes).
no setter

Methods

matchesVisibility(VisibilityInfo info) bool
Returns true if the specified VisibilityInfo object has equivalent visibility to this one.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() String
A string representation of this object.
override

Operators

operator ==(Object other) bool
The equality operator.
override