FlexibleSpaceBarSettings class Null safety

Provides sizing and opacity information to a FlexibleSpaceBar.

See also:

Inheritance

Constructors

FlexibleSpaceBarSettings({Key? key, required double toolbarOpacity, required double minExtent, required double maxExtent, required double currentExtent, required Widget child, bool? isScrolledUnder})
Creates a Flexible Space Bar Settings widget.
const

Properties

child Widget
The widget below this widget in the tree.
final, inherited
currentExtent double
If the FlexibleSpaceBar.title or the FlexibleSpaceBar.background is not null, then this value is used to calculate the relative scale of these elements upon initialization.
final
hashCode int
The hash code for this object.
@nonVirtual, read-only, inherited
isScrolledUnder bool?
True if the FlexibleSpaceBar overlaps the primary scrollable's contents.
final
key Key?
Controls how one widget replaces another widget in the tree.
final, inherited
maxExtent double
Maximum height of the resulting FlexibleSpaceBar when fully expanded.
final
minExtent double
Minimum height of the resulting FlexibleSpaceBar when fully collapsed.
final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
toolbarOpacity double
Affects how transparent the text within the toolbar appears.
final

Methods

createElement() InheritedElement
Inflates this configuration to a concrete instance.
inherited
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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
updateShouldNotify(covariant FlexibleSpaceBarSettings oldWidget) bool
Whether the framework should notify widgets that inherit from this widget.
override

Operators

operator ==(Object other) bool
The equality operator.
@nonVirtual, inherited