/**
* Setup the Animator to achieve path morphing.
*
* @param anim The target Animator which will be updated.
* @param arrayAnimator TypedArray for the ValueAnimator.
* @return the PathDataEvaluator.
*/
private static TypeEvaluator setupAnimatorForPath(ValueAnimator anim, TypedArray arrayAnimator) {
TypeEvaluator evaluator = null;
String fromString = arrayAnimator.getString(R.styleable.Animator_vc_valueFrom);
String toString = arrayAnimator.getString(R.styleable.Animator_vc_valueTo);
PathParser.PathDataNode[] nodesFrom = PathParser.createNodesFromPathData(fromString);
PathParser.PathDataNode[] nodesTo = PathParser.createNodesFromPathData(toString);
if (nodesFrom != null) {
if (nodesTo != null) {
anim.setObjectValues(nodesFrom, nodesTo);
if (!PathParser.canMorph(nodesFrom, nodesTo)) {
throw new InflateException(
arrayAnimator.getPositionDescription()
+ " Can't morph from "
+ fromString
+ " to "
+ toString);
}
} else {
anim.setObjectValues((Object) nodesFrom);
}
evaluator = new PathDataEvaluator(PathParser.deepCopyNodes(nodesFrom));
} else if (nodesTo != null) {
anim.setObjectValues((Object) nodesTo);
evaluator = new PathDataEvaluator(PathParser.deepCopyNodes(nodesTo));
}
if (DBG_ANIMATOR_INFLATER && evaluator != null) {
Log.v(LOG_TAG, "create a new PathDataEvaluator here");
}
return evaluator;
}
private void startSendingAnimation(final RevealView.RevealAnimationListener listener) {
final int width = mFab.getLeft();
final int height = mFab.getTop();
ValueAnimator valueAnimator = new ValueAnimator();
valueAnimator.setDuration(Const.DURATION / 2);
valueAnimator.setObjectValues(new PointF(0, 0));
valueAnimator.setInterpolator(new DecelerateInterpolator());
valueAnimator.setEvaluator(
new TypeEvaluator<PointF>() {
@Override
public PointF evaluate(float fraction, PointF startValue, PointF endValue) {
PointF point = new PointF();
point.x = (width) * (1 - fraction / 2);
point.y = (height) - 0.85f * (height) * (fraction / 2) * (fraction / 2);
return point;
}
});
valueAnimator.start();
valueAnimator.addUpdateListener(
new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
PointF point = (PointF) animation.getAnimatedValue();
mFab.setX(point.x);
mFab.setY(point.y);
}
});
valueAnimator.addListener(
new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
super.onAnimationEnd(animation);
mRevealView.reveal(
(int) mFab.getX() + mFab.getWidth() / 2,
(int) mFab.getY() + mFab.getHeight() / 2,
getThemeColor(),
Const.RADIUS,
Const.DURATION,
listener);
}
});
}