ScrollerProxy.java

/*******************************************************************************
 * Copyright 2011, 2012 Chris Banes.
 *
 * 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.marshalchen.common.uimodule.photoview.scrollerproxy;

import android.content.Context;
import android.os.Build.VERSION;
import android.os.Build.VERSION_CODES;

public abstract class ScrollerProxy {

    public static ScrollerProxy getScroller(Context context) {
        if (VERSION.SDK_INT < VERSION_CODES.GINGERBREAD) {
            return new PreGingerScroller(context);
        } else if (VERSION.SDK_INT < VERSION_CODES.ICE_CREAM_SANDWICH) {
            return new GingerScroller(context);
        } else {
            return new IcsScroller(context);
        }
    }

    public abstract boolean computeScrollOffset();

    public abstract void fling(int startX, int startY, int velocityX, int velocityY, int minX, int maxX, int minY,
                               int maxY, int overX, int overY);

    public abstract void forceFinished(boolean finished);

    public abstract boolean isFinished();

    public abstract int getCurrX();

    public abstract int getCurrY();


}