MatrixTransition class
Animates the Matrix4 of a transformed widget.
The onTransform callback computes a Matrix4 from the animated value, it is called every time the animation changes its value.
The following example implements a MatrixTransition with a rotation around
the Y axis, with a 3D perspective skew.
link
To create a local project with this code sample, run:
flutter create --sample=widgets.MatrixTransition.1 mysample
See also:
- ScaleTransition, which animates the scale of a widget, by providing a matrix which scales along the X and Y axis.
- RotationTransition, which animates the rotation of a widget, by providing a matrix which rotates along the Z axis.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- AnimatedWidget
- MatrixTransition
- Implementers
Constructors
-
MatrixTransition({Key? key, required Animation<
double> animation, required TransformCallback onTransform, Alignment alignment = Alignment.center, FilterQuality? filterQuality, Widget? child}) -
Creates a matrix transition.
const
Properties
- alignment → Alignment
-
The alignment of the origin of the coordinate system in which the
transform takes place, relative to the size of the box.
final
-
animation
→ Animation<
double> -
The animation that controls the matrix of the child.
no setter
- child → Widget?
-
The widget below this widget in the tree.
final
- filterQuality → FilterQuality?
-
The filter quality with which to apply the transform as a bitmap operation.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- listenable → Listenable
-
The Listenable to which this widget is listening.
finalinherited
- onTransform → TransformCallback
-
The callback to compute a Matrix4 from the animation. It's called
every time animation changes its value.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
build(
BuildContext context) → Widget -
Override this method to build widgets that depend on the state of the
listenable (e.g., the current value of the animation).
override
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< AnimatedWidget> -
Subclasses typically do not override this method.
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
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited