initScaleAnimation method
initialize the scale animation of current slice
Implementation
void initScaleAnimation(ScaleAnimationConfig config) {
if (!config.enabled) {
scaleAnimation = ConstantTween<double>(1).animate(widget.controller);
return;
}
List<TweenSequenceItem<double>> sequenceItemList = [];
if (config.animationStartDelay > 0) {
sequenceItemList.add(
TweenSequenceItem(
tween: ConstantTween(0),
weight: config.animationStartDelay
)
);
}
sequenceItemList.add(
TweenSequenceItem(tween: Tween(begin: 0, end: 1), weight: 1 - config.animationFinishDelay - config.animationStartDelay),
);
if (config.animationFinishDelay > 0) {
sequenceItemList.add(
TweenSequenceItem(
tween: ConstantTween(1),
weight: config.animationFinishDelay
)
);
}
scaleAnimation = TweenSequence<double>(sequenceItemList).animate(widget.controller);
}