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package com.mapbox.weartestapp.utils;
import android.support.wearable.view.DefaultOffsettingHelper;
import android.support.wearable.view.WearableRecyclerView;
import android.view.View;
public class OffsettingHelper extends DefaultOffsettingHelper {
/**
* How much should we scale the icon at most.
*/
private static final float MAX_ICON_PROGRESS = 0.65f;
private float progressToCenter;
public OffsettingHelper() {
}
@Override
public void updateChild(View child, WearableRecyclerView parent) {
super.updateChild(child, parent);
// Figure out % progress from top to bottom
float centerOffset = ((float) child.getHeight() / 2.0f) / (float) parent.getHeight();
float yRelativeToCenterOffset = (child.getY() / parent.getHeight()) + centerOffset;
// Normalize for center
progressToCenter = Math.abs(0.5f - yRelativeToCenterOffset);
// Adjust to the maximum scale
progressToCenter = Math.min(progressToCenter, MAX_ICON_PROGRESS);
child.setScaleX(1 - progressToCenter);
child.setScaleY(1 - progressToCenter);
}
@Override
public void adjustAnchorOffsetXY(View child, float[] anchorOffsetXY) {
anchorOffsetXY[0] = child.getHeight() / 2.0f;
}
}
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