PbScrollView.java

/*
* Copyright 2014 Qianqian Zhu <zhuqianqian.299@gmail.com> All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package com.z299studio.pb;

import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build;
import android.util.AttributeSet;
import android.widget.ScrollView;

public class PbScrollView extends ScrollView {

    public interface PbScrollListener{
        void onScroll(int l, int t, int oldl, int oldt);
    }

    private PbScrollListener mPbListener;

    public PbScrollView(Context context) {
        super(context);
    }

    public PbScrollView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public PbScrollView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public PbScrollView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
    }

    public void setPbScrollListener(PbScrollListener listener) {
        mPbListener = listener;
    }

    @Override
    protected void onScrollChanged(int l, int t, int oldl, int oldt) {
        super.onScrollChanged(l, t, oldl, oldt);
        if(mPbListener != null) {
            mPbListener.onScroll(l, t, oldl, oldt);
        }
    }

    @Override
    protected boolean overScrollBy(int deltaX, int deltaY, int scrollX, int scrollY,
                                   int scrollRangeX, int scrollRangeY,
                                   int maxOverScrollX, int maxOverScrollY, boolean isTouchEvent) {
        return super.overScrollBy(deltaX, deltaY, scrollX, scrollY,
                scrollRangeX, scrollRangeY, 0, 0, isTouchEvent);
    }
}