SliverContainer class
A sliver container that gives its sliver a foreground or background consisting of box widgets, this is useful if you want a sliver to look and feel like the child of a regular widget.
The foreground and background widgets are positioned out so that they cover the visible space of sliver, it also applies clipper with these dimensions.
bufferExtent is the amount of space the foreground and background will extend off-screen in each direction if portions of sliver are out of view. To maintain consistent decorations, this should be greater or equal to the size of any features drawn at the border.
The total main axis size of box widgets will never be smaller than bufferExtent * 2 or the main axis size of sliver, whichever is lowest.
See also:
- SliverCard, which gives the sliver a card look.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- SliverContainer
Constructors
-
SliverContainer({Key? key, required Widget? sliver, Widget? foreground, Widget? background, double bufferExtent = 0.0, EdgeInsetsGeometry? padding, EdgeInsetsGeometry? margin, CustomClipper<
Path> ? clipper, Clip clipBehavior = Clip.antiAlias, bool clipSliverOnly = false, BorderRadiusGeometry? borderRadius}) - Constructs a SliverContainer with the specified arguments.
Properties
- background → Widget?
-
The child box widget that is laid out so that it covers the visual space
of sliver, and painted below it.
final
- bufferExtent → double
-
The amount of space foreground and background will extend off-screen
in each direction if portions of sliver are out of view.
final
- clipBehavior → Clip
-
The clip behavior of clipper, defaults to none.
final
-
clipper
→ CustomClipper<
Path> ? -
A custom clipper that defines the path to clip sliver, foreground, and
[background.
final
- clipSliverOnly → bool
-
Whether or not to ignore clipping on foreground and background.
final
- foreground → Widget?
-
The child box widget that is laid out so that it covers the visual space
of sliver, and painted above it.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- margin → EdgeInsetsGeometry?
-
How much padding to apply to the container itself.
final
- padding → EdgeInsetsGeometry?
-
How much padding to apply to sliver.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- sliver → Widget?
-
The child sliver that this container will wrap.
final
Methods
-
build(
BuildContext context) → Widget -
Describes the part of the user interface represented by this widget.
override
-
createElement(
) → StatelessElement -
Creates a StatelessElement to manage this widget's location in the tree.
inherited
-
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