PageScrollPhysics class
Scroll physics used by a PageView.
These physics cause the page view to snap to page boundaries.
See also:
- ScrollPhysics, the base class which defines the API for scrolling physics.
- PageView.physics, which can override the physics used by a page view.
- Inheritance
- Object
- ScrollPhysics
- PageScrollPhysics
Constructors
- PageScrollPhysics({ScrollPhysics parent })
-
Creates physics for a PageView.
const
Properties
- allowImplicitScrolling → bool
-
Whether a viewport is allowed to change its scroll position implicitly in
responds to a call to RenderObject.showOnScreen. [...]
read-only, override
- dragStartDistanceMotionThreshold → double
-
The minimum amount of pixel distance drags must move by to start motion
the first time or after each time the drag motion stopped. [...]
read-only, inherited
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- maxFlingVelocity → double
-
Scroll fling velocity magnitudes will be clamped to this value.
read-only, inherited
- minFlingDistance → double
-
The minimum distance an input pointer drag must have moved to
to be considered a scroll fling gesture. [...]
read-only, inherited
- minFlingVelocity → double
-
The minimum velocity for an input pointer drag to be considered a
scroll fling. [...]
read-only, inherited
- parent → ScrollPhysics
-
If non-null, determines the default behavior for each method. [...]
final, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
- spring → SpringDescription
-
The spring to use for ballistic simulations.
read-only, inherited
- tolerance → Tolerance
-
The tolerance to use for ballistic simulations.
read-only, inherited
Methods
-
applyTo(
ScrollPhysics ancestor) → PageScrollPhysics -
If parent is null then return a ScrollPhysics with the same
runtimeType where the parent has been replaced with the
ancestor
. [...]override -
createBallisticSimulation(
ScrollMetrics position, double velocity) → Simulation -
Returns a simulation for ballistic scrolling starting from the given
position with the given velocity. [...]
override
-
applyBoundaryConditions(
ScrollMetrics position, double value) → double -
Determines the overscroll by applying the boundary conditions. [...]
inherited
-
applyPhysicsToUserOffset(
ScrollMetrics position, double offset) → double -
Used by DragScrollActivity and other user-driven activities to convert
an offset in logical pixels as provided by the DragUpdateDetails into a
delta to apply (subtract from the current position) using
ScrollActivityDelegate.setPixels. [...]
inherited
-
buildParent(
ScrollPhysics ancestor) → ScrollPhysics -
If parent is null then return ancestor, otherwise recursively build a
ScrollPhysics that has
ancestor
as its parent. [...]@protected, inherited -
carriedMomentum(
double existingVelocity) → double -
Returns the velocity carried on repeated flings. [...]
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
shouldAcceptUserOffset(
ScrollMetrics position) → bool -
Whether the scrollable should let the user adjust the scroll offset, for
example by dragging. [...]
inherited
-
toString(
) → String -
Returns a string representation of this object.
inherited
Operators
-
operator ==(
dynamic other) → bool -
The equality operator. [...]
inherited