SPHDelegate class
持久头用的
- Inheritance
-
- Object
- SliverPersistentHeaderDelegate
- SPHDelegate
Constructors
- SPHDelegate({Widget? unfoldChild, Widget? background, ShowType? showType, required double maxOfExtent, required double minOfExtent, required ChildBuild child})
- SPHDelegate.same({Widget? background, required ChildBuild child, Widget? unfoldChild, required dynamic extent})
- 高度 最大/最小相同
Properties
- background → Widget?
-
final
- child → ChildBuild
-
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- heightRatio → double
-
final
- maxExtent → double
-
The size of the header when it is not shrinking at the top of the
viewport.
no setteroverride
- maxOfExtent → double
-
final
- minExtent → double
-
The smallest size to allow the header to reach, when it shrinks at the
start of the viewport.
no setteroverride
- minOfExtent → double
-
final
- 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 setterinherited
- showType ↔ ShowType?
-
getter/setter pair
- snapConfiguration → FloatingHeaderSnapConfiguration?
-
Specifies how floating headers should animate in and out of view.
no setterinherited
- stretchConfiguration → OverScrollHeaderStretchConfiguration?
-
Specifies an AsyncCallback and offset for execution.
no setterinherited
- unfoldChild → Widget?
-
final
- vsync → TickerProvider?
-
A TickerProvider to use when animating the header's size changes.
no setterinherited
Methods
-
build(
BuildContext context, double shrinkOffset, bool overlapsContent) → Widget -
The widget to place inside the SliverPersistentHeader.
override
-
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.
override
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited