PreviewStatusListener.java revision 06db742814dd635d100639f977fcfdc904deb778 
1/*
2 * Copyright (C) 2013 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.camera.ui;
18
19import android.view.GestureDetector;
20import android.view.TextureView;
21
22/**
23 * This interface defines a listener that watches preview status, including SurfaceTexture
24 * change and preview gestures.
25 */
26public interface PreviewStatusListener extends TextureView.SurfaceTextureListener {
27    /**
28     * The preview status listener needs to provide an
29     * {@link android.view.GestureDetector.OnGestureListener} in order to listen
30     * to the touch events that happen on preview.
31     *
32     * @return a listener that listens to touch events
33     */
34    public GestureDetector.OnGestureListener getGestureListener();
35}
36