SliverAnimatedBox class
A sliver which pins its child to the start of the viewport and animates it over the duration of the scrollExtent.
The scrollExtent is total amount a user has to scroll, to move the sliver off the viewport. On the screen the the sliver only occupies the extent of the widget built by builder, which has to derive ist visual representation from a RenderBox. The builder can use the SliverAnimatedBoxMetrics it is given, to animate the returned Widget tree.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- RenderObjectWidget
- SliverAnimatedBox
Constructors
- SliverAnimatedBox({Key? key, required double scrollExtent, required SliverAnimatedBoxWidgetBuilder builder})
-
const
Properties
- builder → SliverAnimatedBoxWidgetBuilder
-
Called at layout time to construct the widget tree.
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- scrollExtent → double
-
The scroll extent this sliver occupies along the scroll axis. A higher
number means the user has to scroll longer before the animation is
complete and the sliver scrolls off.
final
Methods
-
createElement(
) → _LayoutBuilderElement< SliverAnimatedBoxMetrics> -
RenderObjectWidgets always inflate to a RenderObjectElement subclass.
inherited
-
createRenderObject(
BuildContext context) → RenderSliverAnimatedBox -
Creates an instance of the RenderObject class that this
RenderObjectWidget represents, using the configuration described by this
RenderObjectWidget.
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
-
didUnmountRenderObject(
covariant RenderObject renderObject) → void -
A render object previously associated with this widget has been removed
from the tree. The given RenderObject will be of the same type as
returned by this object's createRenderObject.
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
-
updateRenderObject(
BuildContext context, covariant RenderSliverAnimatedBox renderObject) → void -
Copies the configuration described by this RenderObjectWidget to the
given RenderObject, which will be of the same type as returned by this
object's createRenderObject.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited