AnimatedDefaultTextStyle class Null safety

Animated version of DefaultTextStyle which automatically transitions the default text style (the text style to apply to descendant Text widgets without explicit style) over a given duration whenever the given style changes.

The textAlign, softWrap, overflow, maxLines, textWidthBasis and textHeightBehavior properties are not animated and take effect immediately when changed.

Here's an illustration of what using this widget looks like, using a curve of Curves.elasticInOut.

For the animation, you can choose a curve as well as a duration and the widget will automatically animate to the new default text style. If you require more control over the animation (e.g. if you want to stop it mid-animation), consider using a DefaultTextStyleTransition instead, which takes a provided Animation as argument. While that allows you to fine-tune the animation, it also requires more development overhead as you have to manually manage the lifecycle of the underlying AnimationController.



AnimatedDefaultTextStyle({Key? key, required Widget child, required TextStyle style, TextAlign? textAlign, bool softWrap: true, TextOverflow overflow: TextOverflow.clip, int? maxLines, TextWidthBasis textWidthBasis: TextWidthBasis.parent, TextHeightBehavior? textHeightBehavior, Curve curve: Curves.linear, required Duration duration, VoidCallback? onEnd})
Creates a widget that animates the default text style implicitly. [...]


child Widget
The widget below this widget in the tree. [...]
curve Curve
The curve to apply when animating the parameters of this container.
final, inherited
duration Duration
The duration over which to animate the parameters of this container.
final, inherited
hashCode int
The hash code for this object. [...]
@nonVirtual, read-only, inherited
key Key?
Controls how one widget replaces another widget in the tree. [...]
final, inherited
maxLines int?
An optional maximum number of lines for the text to span, wrapping if necessary. [...]
onEnd VoidCallback?
Called every time an animation completes. [...]
final, inherited
overflow TextOverflow
How visual overflow should be handled. [...]
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
softWrap bool
Whether the text should break at soft line breaks. [...]
style TextStyle
The target text style. [...]
textAlign TextAlign?
How the text should be aligned horizontally. [...]
textHeightBehavior TextHeightBehavior?
Defines how the paragraph will apply TextStyle.height to the ascent of the first line and descent of the last line. [...]
textWidthBasis TextWidthBasis
The strategy to use when calculating the width of the Text. [...]


createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree. [...]
createState() → _AnimatedDefaultTextStyleState
Creates the mutable state for this widget at a given location in the tree. [...]
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. [...]
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep. [...]
toString({DiagnosticLevel minLevel:}) String
A string representation of this object. [...]
toStringDeep({String prefixLineOne: '', String? prefixOtherLines, DiagnosticLevel minLevel: DiagnosticLevel.debug}) String
Returns a string representation of this node and its descendants. [...]
toStringShallow({String joiner: ', ', DiagnosticLevel minLevel: DiagnosticLevel.debug}) String
Returns a one-line detailed description of the object. [...]
toStringShort() String
A short, textual description of this widget.


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