ZoomInTransformer.java

package com.tiger.quicknews.wedget.viewimage.Transformers;

import android.view.View;

import com.nineoldandroids.view.ViewHelper;

public class ZoomInTransformer extends BaseTransformer {

    @Override
    protected void onTransform(View view, float position) {
        final float scale = position < 0 ? position + 1f : Math.abs(1f - position);
        ViewHelper.setScaleX(view, scale);
        ViewHelper.setScaleY(view, scale);
        ViewHelper.setPivotX(view, view.getWidth() * 0.5f);
        ViewHelper.setPivotY(view, view.getHeight() * 0.5f);
        ViewHelper.setAlpha(view, position < -1f || position > 1f ? 0f : 1f - (scale - 1f));
    }

}