AnimatedDefaultTextStyle class

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.
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. [...]
final
onEnd VoidCallback
Called every time an animation completes. [...]
final, inherited
overflow TextOverflow
How visual overflow should be handled. [...]
final
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. [...]
final
style TextStyle
The target text style. [...]
final
textAlign TextAlign
How the text should be aligned horizontally. [...]
final
textHeightBehavior TextHeightBehavior
Defines how the paragraph will apply TextStyle.height to the ascent of the first line and descent of the last line. [...]
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() → _AnimatedDefaultTextStyleState
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, inherited
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
Returns 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, inherited