/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.systemui.tuner;
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import android.content.Context;
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import android.util.AttributeSet;
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import android.view.DragEvent;
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import android.widget.ScrollView;
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public class AutoScrollView extends ScrollView {
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private static final float SCROLL_PERCENT = .10f;
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public AutoScrollView(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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public boolean onDragEvent(DragEvent event) {
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switch (event.getAction()) {
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case DragEvent.ACTION_DRAG_LOCATION:
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int y = (int) event.getY();
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int height = getHeight();
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int scrollPadding = (int) (height * SCROLL_PERCENT);
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if (y < scrollPadding) {
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scrollBy(0, y - scrollPadding);
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} else if (y > height - scrollPadding) {
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scrollBy(0, y - height + scrollPadding);
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}
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break;
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}
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return false;
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}
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}
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