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.

Inheritance

Constructors

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.
const

Properties

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

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → AnimatedWidgetBaseState<AnimatedDefaultTextStyle>
Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
protected">@protectedinherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
override
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

Operators

operator ==(Object other) → bool
The equality operator.
nonVirtual">@nonVirtualinherited