SpacingTheme class

将间距主题应用于后代小部件。

后代小部件使用 SpacingTheme.of 获取当前主题的 SpacingThemeData 对象。当小部件使用 SpacingTheme.of 时，如果主题稍后更改，它会自动重建。

可以使用 ThemeData.extension<SpacingThemeData>() 将间距主题指定为整个 Material 主题的一部分。

Inheritance

Constructors

SpacingTheme.new({required SpacingThemeData data, required Widget child, Key? key}): 构造一个配置所有后代小部件间距的主题。
const

child → Widget: The widget below this widget in the tree.
finalinherited
data → SpacingThemeData: 用于所有后代小部件的间距。
final
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

createElement() → InheritedElement: Inflates this configuration to a concrete instance.
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, int wrapWidth = 65}) → 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 SpacingTheme oldWidget) → bool: Whether the framework should notify widgets that inherit from this widget.
override