/**
* Copyright (C) 2016 Hyphenate Inc. 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.
*/
/*******************************************************************************
* 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.fanxin.easeui.widget.photoview;
import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build.VERSION;
import android.os.Build.VERSION_CODES;
import android.widget.OverScroller;
import android.widget.Scroller;
abstract class ScrollerProxy {
public static ScrollerProxy getScroller(Context context) {
if (VERSION.SDK_INT < VERSION_CODES.GINGERBREAD) {
return new PreGingerScroller(context);
} else {
return new GingerScroller(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 int getCurrX();
public abstract int getCurrY();
@TargetApi(9)
private static class GingerScroller extends ScrollerProxy {
private OverScroller mScroller;
public GingerScroller(Context context) {
mScroller = new OverScroller(context);
}
@Override
public boolean computeScrollOffset() {
return mScroller.computeScrollOffset();
}
@Override
public void fling(int startX, int startY, int velocityX, int velocityY, int minX, int maxX, int minY, int maxY,
int overX, int overY) {
mScroller.fling(startX, startY, velocityX, velocityY, minX, maxX, minY, maxY, overX, overY);
}
@Override
public void forceFinished(boolean finished) {
mScroller.forceFinished(finished);
}
@Override
public int getCurrX() {
return mScroller.getCurrX();
}
@Override
public int getCurrY() {
return mScroller.getCurrY();
}
}
private static class PreGingerScroller extends ScrollerProxy {
private Scroller mScroller;
public PreGingerScroller(Context context) {
mScroller = new Scroller(context);
}
@Override
public boolean computeScrollOffset() {
return mScroller.computeScrollOffset();
}
@Override
public void fling(int startX, int startY, int velocityX, int velocityY, int minX, int maxX, int minY, int maxY,
int overX, int overY) {
mScroller.fling(startX, startY, velocityX, velocityY, minX, maxX, minY, maxY);
}
@Override
public void forceFinished(boolean finished) {
mScroller.forceFinished(finished);
}
@Override
public int getCurrX() {
return mScroller.getCurrX();
}
@Override
public int getCurrY() {
return mScroller.getCurrY();
}
}
}