DragScrollActivity class Null safety

The activity a scroll view performs when the user drags their finger across the screen.

See also:

Inheritance

Constructors

DragScrollActivity(ScrollActivityDelegate delegate, ScrollDragController controller)
Creates an activity for when the user drags their finger across the screen.

Properties

delegate ScrollActivityDelegate
The delegate that this activity will use to actuate the scroll view.
read-only, inherited
hashCode int
The hash code for this object. [...]
read-only, inherited
isScrolling bool
Whether performing this activity constitutes scrolling. [...]
read-only, override
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
shouldIgnorePointer bool
Whether the scroll view should ignore pointer events while performing this activity. [...]
read-only, override
velocity double
If applicable, the velocity at which the scroll offset is currently independently changing (i.e. without external stimuli such as a dragging gestures) in logical pixels per second for this activity.
read-only, override

Methods

applyNewDimensions() → void
Called when the scroll view that is performing this activity changes its metrics.
inherited
dispatchOverscrollNotification(ScrollMetrics metrics, BuildContext context, double overscroll) → void
Dispatch an OverscrollNotification with the given metrics and overscroll.
override
dispatchScrollEndNotification(ScrollMetrics metrics, BuildContext context) → void
Dispatch a ScrollEndNotification with the given metrics and overscroll.
override
dispatchScrollStartNotification(ScrollMetrics metrics, BuildContext? context) → void
Dispatch a ScrollStartNotification with the given metrics.
override
dispatchScrollUpdateNotification(ScrollMetrics metrics, BuildContext context, double scrollDelta) → void
Dispatch a ScrollUpdateNotification with the given metrics and scroll delta.
override
dispose() → void
Called when the scroll view stops performing this activity.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
resetActivity() → void
Called by the ScrollActivityDelegate when it has changed type (for example, when changing from an Android-style scroll position to an iOS-style scroll position). If this activity can differ between the two modes, then it should tell the position to restart that activity appropriately. [...]
inherited
toString() String
A string representation of this object. [...]
override
updateDelegate(ScrollActivityDelegate value) → void
Updates the activity's link to the ScrollActivityDelegate. [...]
inherited

Operators

operator ==(Object other) bool
The equality operator. [...]
inherited