1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.videoeditor.widgets;
18
19import android.view.View;
20
21/**
22 * A listener for scroll events
23 */
24public interface ScrollViewListener {
25    /**
26     * Scroll begin
27     *
28     * @param view The view
29     * @param scrollX The current horizontal position
30     * @param scrollY The current vertical position
31     * @param appScroll true if scroll was initiate in code
32     *      (as opposed to by the user)
33     */
34    public void onScrollBegin(View view, int scrollX, int scrollY, boolean appScroll);
35
36    /**
37     * Scroll in progress
38     *
39     * @param view The view
40     * @param scrollX The current horizontal position
41     * @param scrollY The current vertical position
42     * @param appScroll true if scroll was initiate in code
43     *      (as opposed to by the user)
44     */
45    public void onScrollProgress(View view, int scrollX, int scrollY, boolean appScroll);
46
47    /**
48     * Scroll end
49     *
50     * @param view The view
51     * @param scrollX The current horizontal position
52     * @param scrollY The current vertical position
53     * @param appScroll true if scroll was initiate in code
54     *      (as opposed to by the user)
55     */
56    public void onScrollEnd(View view, int scrollX, int scrollY, boolean appScroll);
57}
58