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      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 
     17 package com.android.camera.ui;
     18 
     19 import com.android.camera.CameraPreference.OnPreferenceChangedListener;
     20 import com.android.camera.ListPreference;
     21 import com.android.camera.R;
     22 
     23 import android.content.Context;
     24 import android.hardware.Camera.CameraInfo;
     25 import android.view.View;
     26 
     27 /**
     28  * A view for switching the front/back camera.
     29  */
     30 public 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