SliverPersistentHeaderDelegate class abstract

Delegate for configuring a SliverPersistentHeader.

Constructors

SliverPersistentHeaderDelegate()
Abstract const constructor. This constructor enables subclasses to provide const constructors so that they can be used in const expressions.
const

Properties

hashCode int
The hash code for this object.
no setterinherited
maxExtent double
The size of the header when it is not shrinking at the top of the viewport.
no setter
minExtent double
The smallest size to allow the header to reach, when it shrinks at the start of the viewport.
no setter
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
showOnScreenConfiguration PersistentHeaderShowOnScreenConfiguration?
Specifies how floating headers and pinned headers should behave in response to RenderObject.showOnScreen calls.
no setter
snapConfiguration FloatingHeaderSnapConfiguration?
Specifies how floating headers should animate in and out of view.
no setter
stretchConfiguration OverScrollHeaderStretchConfiguration?
Specifies an AsyncCallback and offset for execution.
no setter
vsync TickerProvider?
A TickerProvider to use when animating the header's size changes.
no setter

Methods

build(BuildContext context, double shrinkOffset, bool overlapsContent) Widget
The widget to place inside the SliverPersistentHeader.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
shouldRebuild(covariant SliverPersistentHeaderDelegate oldDelegate) bool
Whether this delegate is meaningfully different from the old delegate.
toString() String
A string representation of this object.
inherited

Operators

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