CameraPicker.java revision 26d88fce15a24362644123af5f0cce79ea572e7b 
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.camera.ui;
18
19import com.android.camera.CameraPreference.OnPreferenceChangedListener;
20import com.android.camera.ListPreference;
21import com.android.camera.R;
22
23import android.content.Context;
24import android.hardware.Camera.CameraInfo;
25import android.view.View;
26
27/**
28 * A view for switching the front/back camera.
29 */
30public class CameraPicker extends RotateImageView implements View.OnClickListener {
31    private static int mImageResource;
32
33    private OnPreferenceChangedListener mListener;
34    private ListPreference mPreference;
35    private CharSequence[] mCameras;
36    private int mCameraFacing;
37
38    public CameraPicker(Context context) {
39        super(context);
40        setImageResource(mImageResource);
41        setContentDescription(getResources().getString(
42                R.string.accessibility_camera_picker));
43    }
44
45    public static void setImageResourceId(int imageResource) {
46        mImageResource = imageResource;
47    }
48
49    public void setListener(OnPreferenceChangedListener listener) {
50        mListener = listener;
51    }
52
53    public void initialize(ListPreference pref) {
54        mPreference = pref;
55        mCameras = pref.getEntryValues();
56        if (mCameras == null) return;
57        setOnClickListener(this);
58        String cameraId = pref.getValue();
59        setVisibility(View.VISIBLE);
60        if (mCameras[CameraInfo.CAMERA_FACING_FRONT].equals(cameraId)) {
61            mCameraFacing = CameraInfo.CAMERA_FACING_FRONT;
62        } else {
63            mCameraFacing = CameraInfo.CAMERA_FACING_BACK;
64        }
65    }
66
67    @Override
68    public void onClick(View v) {
69        if (mCameras == null) return;
70        int newCameraIndex = (mCameraFacing == CameraInfo.CAMERA_FACING_BACK)
71                ? CameraInfo.CAMERA_FACING_FRONT
72                : CameraInfo.CAMERA_FACING_BACK;
73        mCameraFacing = newCameraIndex;
74        mPreference.setValue((String) mCameras[mCameraFacing]);
75        mListener.onSharedPreferenceChanged();
76    }
77}
78