/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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.android.systemui.tuner;
import android.content.Context;
import android.util.AttributeSet;
import android.view.DragEvent;
import android.widget.ScrollView;
public class AutoScrollView extends ScrollView {
private static final float SCROLL_PERCENT = .10f;
public AutoScrollView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public boolean onDragEvent(DragEvent event) {
switch (event.getAction()) {
case DragEvent.ACTION_DRAG_LOCATION:
int y = (int) event.getY();
int height = getHeight();
int scrollPadding = (int) (height * SCROLL_PERCENT);
if (y < scrollPadding) {
scrollBy(0, y - scrollPadding);
} else if (y > height - scrollPadding) {
scrollBy(0, y - height + scrollPadding);
}
break;
}
return false;
}
}