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      1 /*
      2  * Copyright (C) 2009 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;
     18 
     19 import com.android.camera.ui.PopupManager;
     20 
     21 import android.app.Activity;
     22 import android.app.KeyguardManager;
     23 import android.content.Context;
     24 import android.content.Intent;
     25 import android.content.pm.ActivityInfo;
     26 import android.hardware.Camera;
     27 import android.os.Bundle;
     28 import android.util.Log;
     29 import android.view.KeyEvent;
     30 
     31 /**
     32  * Superclass of Camera and VideoCamera activities.
     33  */
     34 abstract public class ActivityBase extends Activity {
     35     private static final String TAG = "ActivityBase";
     36     private static boolean LOGV = false;
     37     private int mResultCodeForTesting;
     38     private boolean mOnResumePending;
     39     private Intent mResultDataForTesting;
     40     protected Camera mCameraDevice;
     41 
     42     @Override
     43     public void onCreate(Bundle icicle) {
     44         if (Util.isTabletUI()) {
     45             setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
     46         } else {
     47             setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
     48         }
     49         super.onCreate(icicle);
     50     }
     51 
     52     @Override
     53     public void onWindowFocusChanged(boolean hasFocus) {
     54         if (LOGV) Log.v(TAG, "onWindowFocusChanged.hasFocus=" + hasFocus
     55                 + ".mOnResumePending=" + mOnResumePending);
     56         if (hasFocus && mOnResumePending) {
     57             doOnResume();
     58             mOnResumePending = false;
     59         }
     60     }
     61 
     62     @Override
     63     protected void onResume() {
     64         super.onResume();
     65         // Don't grab the camera if in use by lockscreen. For example, face
     66         // unlock may be using the camera. Camera may be already opened in
     67         // onCreate. doOnResume should continue if mCameraDevice != null.
     68         // Suppose camera app is in the foreground. If users turn off and turn
     69         // on the screen very fast, camera app can still have the focus when the
     70         // lock screen shows up. The keyguard takes input focus, so the caemra
     71         // app will lose focus when it is displayed.
     72         if (LOGV) Log.v(TAG, "onResume. hasWindowFocus()=" + hasWindowFocus());
     73         if (mCameraDevice == null && isKeyguardLocked()) {
     74             if (LOGV) Log.v(TAG, "onResume. mOnResumePending=true");
     75             mOnResumePending = true;
     76         } else {
     77             if (LOGV) Log.v(TAG, "onResume. mOnResumePending=false");
     78             doOnResume();
     79             mOnResumePending = false;
     80         }
     81     }
     82 
     83     @Override
     84     protected void onPause() {
     85         if (LOGV) Log.v(TAG, "onPause");
     86         super.onPause();
     87         mOnResumePending = false;
     88     }
     89 
     90     // Put the code of onResume in this method.
     91     abstract protected void doOnResume();
     92 
     93     @Override
     94     public boolean onSearchRequested() {
     95         return false;
     96     }
     97 
     98     @Override
     99     public boolean onKeyDown(int keyCode, KeyEvent event) {
    100         // Prevent software keyboard or voice search from showing up.
    101         if (keyCode == KeyEvent.KEYCODE_SEARCH
    102                 || keyCode == KeyEvent.KEYCODE_MENU) {
    103             if (event.isLongPress()) return true;
    104         }
    105 
    106         return super.onKeyDown(keyCode, event);
    107     }
    108 
    109     protected void setResultEx(int resultCode) {
    110         mResultCodeForTesting = resultCode;
    111         setResult(resultCode);
    112     }
    113 
    114     protected void setResultEx(int resultCode, Intent data) {
    115         mResultCodeForTesting = resultCode;
    116         mResultDataForTesting = data;
    117         setResult(resultCode, data);
    118     }
    119 
    120     public int getResultCode() {
    121         return mResultCodeForTesting;
    122     }
    123 
    124     public Intent getResultData() {
    125         return mResultDataForTesting;
    126     }
    127 
    128     @Override
    129     protected void onDestroy() {
    130         PopupManager.removeInstance(this);
    131         super.onDestroy();
    132     }
    133 
    134     private boolean isKeyguardLocked() {
    135         KeyguardManager kgm = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
    136         if (LOGV) {
    137             if (kgm != null) {
    138                 Log.v(TAG, "kgm.isKeyguardLocked()="+kgm.isKeyguardLocked()
    139                         + ". kgm.isKeyguardSecure()="+kgm.isKeyguardSecure());
    140             }
    141         }
    142         // isKeyguardSecure excludes the slide lock case.
    143         return (kgm != null) && kgm.isKeyguardLocked() && kgm.isKeyguardSecure();
    144     }
    145 }
    146