A widget that cross-fades between two given children and animates itself between their sizes.
The animation is controlled through the crossFadeState parameter. firstCurve and secondCurve represent the opacity curves of the two children. Note that firstCurve is inverted, i.e. it fades out when providing a growing curve like Curves.linear. sizeCurve is the curve used to animated between the size of the fading out child and the size of the fading in child.
This widget is intended to be used to fade a pair of widgets with the same width. In the case where the two children have different heights, the animation crops overflowing children during the animation by aligning their top edge, which means that the bottom will be clipped.
- Inheritance
- Object
- Widget
- StatefulWidget
- AnimatedCrossFade
Constructors
- AnimatedCrossFade({Key key, Widget firstChild, Widget secondChild, Curve firstCurve: Curves.linear, Curve secondCurve: Curves.linear, Curve sizeCurve: Curves.linear, @required CrossFadeState crossFadeState, @required Duration duration })
-
Creates a cross-fade animation widget.
Properties
- crossFadeState → CrossFadeState
-
The child that will be shown when the animation has completed.
read-only - duration → Duration
-
The duration of the whole orchestrated animation.
read-only - firstChild → Widget
-
The child that is visible when crossFadeState is
showFirst. It fades out when transitioning fromshowFirsttoshowSecondand vice versa.read-only - firstCurve → Curve
-
The fade curve of the first child.
read-only - secondChild → Widget
-
The child that is visible when crossFadeState is
showSecond. It fades in when transitioning fromshowFirsttoshowSecondand vice versa.read-only - secondCurve → Curve
-
The fade curve of the second child.
read-only - sizeCurve → Curve
-
The curve of the animation between the two children's sizes.
read-only - hashCode → int
-
Get a hash code for this object.
read-only, inherited - key → Key
-
Controls how one widget replaces another widget in the tree.
read-only, inherited - runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Operators
-
operator ==(
other) → bool -
The equality operator.
inherited
Methods
-
createState(
) → _AnimatedCrossFadeState -
Creates the mutable state for this widget at a given location in the tree.
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited -
debugFillDescription(
List<String> description) → void -
Add additional information to the given description for use by toString.
inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited -
toString(
) → String -
Returns a string representation of this object.
inherited -
toStringShort(
) → String -
A short, textual description of this widget.
inherited