| /* |
| * 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; |
| } |
| } |