MorphTransitionPlugin class

Morphs a container's shape, color, and border radius.

Params:

• fromRadius (double) — Starting border radius. Default: 8.0
• toRadius (double) — Ending border radius. Default: 32.0
• fromColor (Color) — Starting fill color. Default: Color(0xFF1976D2)
• toColor (Color) — Ending fill color. Default: Color(0xFF42A5F5)

Usage:

MotionWidget(
  transition: MorphTransitionPlugin(),
  params: {
    'fromRadius': 4.0, 'toRadius': 50.0,
    'fromColor': Colors.blue, 'toColor': Colors.purple,
  },
  child: myWidget,
)

Inheritance

• Object
• TransitionPlugin
• MorphTransitionPlugin

Constructors

MorphTransitionPlugin()

const

Properties

affectedProperties → List<AnimatableProperty>

All widget properties this transition modifies. Used by FrameBudgeter to decide whether to skip expensive effects.

no setter, override

description → String

Human-readable description of this transition (optional, for tooling).

no setter, override

hashCode → int

The hash code for this object.

no setter, inherited

id → String

Unique identifier used to look up this plugin in TransitionRegistry.

no setter, override

isExpensive → bool

True when this effect uses expensive GPU operations (blur, shader, clip). The FrameBudgeter will disable expensive plugins under FPS threshold.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

build({required Animation<double> animation, required Widget child, Map<String, Object?> params = const {}}) → Widget

Builds the animated widget for the forward direction.

override

buildCurved({required Animation<double> animation, required Curve curve, required Widget child, Map<String, Object?> params = const {}}) → Widget

Helper — wraps build with a CurvedAnimation.

inherited

buildReverse({required Animation<double> animation, required Widget child, Map<String, Object?> params = const {}}) → Widget

Builds the animated widget for the reverse direction.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited