CircleListScrollView class

A box in which children on a wheel can be scrolled.

This widget is similar to a ListView but with the restriction that all children must be the same size along the scrolling axis.

When the list is at the zero scroll offset, the first child is aligned with the middle of the viewport. When the list is at the final scroll offset, the last child is aligned with the middle of the viewport

The children are rendered as if rotating on a wheel instead of scrolling on a plane.

Inheritance

Constructors

CircleListScrollView({Key? key, ScrollController? controller, ScrollPhysics? physics, required double itemExtent, ValueChanged<int>? onSelectedItemChanged, bool clipToSize = true, bool renderChildrenOutsideViewport = false, required List<Widget> children, Axis axis = Axis.vertical, double radius = 100})
Constructs a list in which children are scrolled a wheel. Its children are passed to a delegate and lazily built during layout.
CircleListScrollView.useDelegate({Key? key, ScrollController? controller, ScrollPhysics? physics, required double itemExtent, ValueChanged<int>? onSelectedItemChanged, bool clipToSize = true, bool renderChildrenOutsideViewport = false, required CircleListChildDelegate childDelegate, Axis axis = Axis.vertical, double radius = 100})
Constructs a list in which children are scrolled a wheel. Its children are managed by a delegate and are lazily built during layout.
const

Properties

axis → Axis
Define a main axis of scrolling
final
childDelegate → CircleListChildDelegate
A delegate that helps lazily instantiating child.
final
clipToSize → bool
Whether to clip painted children to the inside of this viewport.
final
controller → ScrollController?
Typically a FixedExtentScrollController used to control the current item.
final
hashCode → int
The hash code for this object.
no setterinherited
itemExtent → double
Size of each child in the main axis. Must not be null and must be positive.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onSelectedItemChanged → ValueChanged<int>?
On optional listener that's called when the centered item changes.
final
physics → ScrollPhysics?
How the scroll view should respond to user input.
final
radius → double
Circle radius
final
renderChildrenOutsideViewport → bool
Whether to paint children inside the viewport only.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → _CircleListScrollViewState
Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited