src/com/android/camera/ActivityBase.java - platform/packages/apps/Camera - Git at Google

 /*
  * Copyright (C) 2009 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.camera;

 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.Rect;
 import android.hardware.Camera.Parameters;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
 import android.view.KeyEvent;
 import android.view.View;
 import android.view.Window;
 import android.view.WindowManager;
 import android.view.animation.AlphaAnimation;
 import android.view.animation.Animation;
 import android.view.animation.DecelerateInterpolator;

 import com.android.camera.ui.LayoutChangeNotifier;
 import com.android.camera.ui.PopupManager;
 import com.android.gallery3d.app.AbstractGalleryActivity;
 import com.android.gallery3d.app.AppBridge;
 import com.android.gallery3d.app.FilmstripPage;
 import com.android.gallery3d.app.GalleryActionBar;
 import com.android.gallery3d.app.PhotoPage;
 import com.android.gallery3d.common.ApiHelper;
 import com.android.gallery3d.ui.ScreenNail;
 import com.android.gallery3d.util.MediaSetUtils;

 /**
  * Superclass of camera activity.
  */
 public abstract class ActivityBase extends AbstractGalleryActivity
         implements LayoutChangeNotifier.Listener {

     private static final String TAG = "ActivityBase";
     private static final int CAMERA_APP_VIEW_TOGGLE_TIME = 100;  // milliseconds
     private static final String INTENT_ACTION_STILL_IMAGE_CAMERA_SECURE =
             "android.media.action.STILL_IMAGE_CAMERA_SECURE";
     public static final String ACTION_IMAGE_CAPTURE_SECURE =
             "android.media.action.IMAGE_CAPTURE_SECURE";
     // The intent extra for camera from secure lock screen. True if the gallery
     // should only show newly captured pictures. sSecureAlbumId does not
     // increment. This is used when switching between camera, camcorder, and
     // panorama. If the extra is not set, it is in the normal camera mode.
     public static final String SECURE_CAMERA_EXTRA = "secure_camera";

     private int mResultCodeForTesting;
     private Intent mResultDataForTesting;
     private OnScreenHint mStorageHint;
     private View mSingleTapArea;

     protected boolean mOpenCameraFail;
     protected boolean mCameraDisabled;
     protected CameraManager.CameraProxy mCameraDevice;
     protected Parameters mParameters;
     // The activity is paused. The classes that extend this class should set
     // mPaused the first thing in onResume/onPause.
     protected boolean mPaused;
     protected GalleryActionBar mActionBar;

     // multiple cameras support
     protected int mNumberOfCameras;
     protected int mCameraId;
     // The activity is going to switch to the specified camera id. This is
     // needed because texture copy is done in GL thread. -1 means camera is not
     // switching.
     protected int mPendingSwitchCameraId = -1;

     protected MyAppBridge mAppBridge;
     protected ScreenNail mCameraScreenNail; // This shows camera preview.
     // The view containing only camera related widgets like control panel,
     // indicator bar, focus indicator and etc.
     protected View mCameraAppView;
     protected boolean mShowCameraAppView = true;
     private Animation mCameraAppViewFadeIn;
     private Animation mCameraAppViewFadeOut;
     // Secure album id. This should be incremented every time the camera is
     // launched from the secure lock screen. The id should be the same when
     // switching between camera, camcorder, and panorama.
     protected static int sSecureAlbumId;
     // True if the camera is started from secure lock screen.
     protected boolean mSecureCamera;
     private static boolean sFirstStartAfterScreenOn = true;

     private long mStorageSpace = Storage.LOW_STORAGE_THRESHOLD;
     private static final int UPDATE_STORAGE_HINT = 0;
     private final Handler mHandler = new Handler() {
             @Override
             public void handleMessage(Message msg) {
                 switch (msg.what) {
                     case UPDATE_STORAGE_HINT:
                         updateStorageHint();
                         return;
                 }
             }
     };

     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             String action = intent.getAction();
             if (action.equals(Intent.ACTION_MEDIA_MOUNTED)
                     || action.equals(Intent.ACTION_MEDIA_UNMOUNTED)
                     || action.equals(Intent.ACTION_MEDIA_CHECKING)
                     || action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) {
                 updateStorageSpaceAndHint();
             }
         }
     };

     // close activity when screen turns off
     private BroadcastReceiver mScreenOffReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {
             finish();
         }
     };

     private static BroadcastReceiver sScreenOffReceiver;
     private static class ScreenOffReceiver extends BroadcastReceiver {
         @Override
         public void onReceive(Context context, Intent intent) {
             sFirstStartAfterScreenOn = true;
         }
     }

     public static boolean isFirstStartAfterScreenOn() {
         return sFirstStartAfterScreenOn;
     }

     public static void resetFirstStartAfterScreenOn() {
         sFirstStartAfterScreenOn = false;
     }

     protected class CameraOpenThread extends Thread {
         @Override
         public void run() {
             try {
                 mCameraDevice = Util.openCamera(ActivityBase.this, mCameraId);
                 mParameters = mCameraDevice.getParameters();
             } catch (CameraHardwareException e) {
                 mOpenCameraFail = true;
             } catch (CameraDisabledException e) {
                 mCameraDisabled = true;
             }
         }
     }

     @Override
     public void onCreate(Bundle icicle) {
         super.disableToggleStatusBar();
         // Set a theme with action bar. It is not specified in manifest because
         // we want to hide it by default. setTheme must happen before
         // setContentView.
         //
         // This must be set before we call super.onCreate(), where the window's
         // background is removed.
         setTheme(R.style.Theme_Gallery);
         getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
         if (ApiHelper.HAS_ACTION_BAR) {
             requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
         } else {
             requestWindowFeature(Window.FEATURE_NO_TITLE);
         }

         // Check if this is in the secure camera mode.
         Intent intent = getIntent();
         String action = intent.getAction();
         if (INTENT_ACTION_STILL_IMAGE_CAMERA_SECURE.equals(action)) {
             mSecureCamera = true;
             // Use a new album when this is started from the lock screen.
             sSecureAlbumId++;
         } else if (ACTION_IMAGE_CAPTURE_SECURE.equals(action)) {
             mSecureCamera = true;
         } else {
             mSecureCamera = intent.getBooleanExtra(SECURE_CAMERA_EXTRA, false);
         }
         if (mSecureCamera) {
             IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF);
             registerReceiver(mScreenOffReceiver, filter);
             if (sScreenOffReceiver == null) {
                 sScreenOffReceiver = new ScreenOffReceiver();
                 getApplicationContext().registerReceiver(sScreenOffReceiver, filter);
             }
         }
         super.onCreate(icicle);
     }

     public boolean isPanoramaActivity() {
         return false;
     }

     @Override
     protected void onResume() {
         super.onResume();

         installIntentFilter();
         if (updateStorageHintOnResume()) {
             updateStorageSpace();
             mHandler.sendEmptyMessageDelayed(UPDATE_STORAGE_HINT, 200);
         }
     }

     @Override
     protected void onPause() {
         super.onPause();

         if (mStorageHint != null) {
             mStorageHint.cancel();
             mStorageHint = null;
         }

         unregisterReceiver(mReceiver);
     }

     @Override
     public void setContentView(int layoutResID) {
         super.setContentView(layoutResID);
         // getActionBar() should be after setContentView
         mActionBar = new GalleryActionBar(this);
         mActionBar.hide();
     }

     @Override
     public boolean onSearchRequested() {
         return false;
     }

     @Override
     public boolean onKeyDown(int keyCode, KeyEvent event) {
         // Prevent software keyboard or voice search from showing up.
         if (keyCode == KeyEvent.KEYCODE_SEARCH
                 || keyCode == KeyEvent.KEYCODE_MENU) {
             if (event.isLongPress()) return true;
         }
         if (keyCode == KeyEvent.KEYCODE_MENU && mShowCameraAppView) {
             return true;
         }

         return super.onKeyDown(keyCode, event);
     }

     @Override
     public boolean onKeyUp(int keyCode, KeyEvent event) {
         if (keyCode == KeyEvent.KEYCODE_MENU && mShowCameraAppView) {
             return true;
         }
         return super.onKeyUp(keyCode, event);
     }

     protected void setResultEx(int resultCode) {
         mResultCodeForTesting = resultCode;
         setResult(resultCode);
     }

     protected void setResultEx(int resultCode, Intent data) {
         mResultCodeForTesting = resultCode;
         mResultDataForTesting = data;
         setResult(resultCode, data);
     }

     public int getResultCode() {
         return mResultCodeForTesting;
     }

     public Intent getResultData() {
         return mResultDataForTesting;
     }

     @Override
     protected void onDestroy() {
         PopupManager.removeInstance(this);
         if (mSecureCamera) unregisterReceiver(mScreenOffReceiver);
         super.onDestroy();
     }

     protected void installIntentFilter() {
         // install an intent filter to receive SD card related events.
         IntentFilter intentFilter =
                 new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
         intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
         intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
         intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING);
         intentFilter.addDataScheme("file");
         registerReceiver(mReceiver, intentFilter);
     }

     protected void updateStorageSpace() {
         mStorageSpace = Storage.getAvailableSpace();
     }

     protected long getStorageSpace() {
         return mStorageSpace;
     }

     protected void updateStorageSpaceAndHint() {
         updateStorageSpace();
         updateStorageHint(mStorageSpace);
     }

     protected void updateStorageHint() {
         updateStorageHint(mStorageSpace);
     }

     protected boolean updateStorageHintOnResume() {
         return true;
     }

     protected void updateStorageHint(long storageSpace) {
         String message = null;
         if (storageSpace == Storage.UNAVAILABLE) {
             message = getString(R.string.no_storage);
         } else if (storageSpace == Storage.PREPARING) {
             message = getString(R.string.preparing_sd);
         } else if (storageSpace == Storage.UNKNOWN_SIZE) {
             message = getString(R.string.access_sd_fail);
         } else if (storageSpace <= Storage.LOW_STORAGE_THRESHOLD) {
             message = getString(R.string.spaceIsLow_content);
         }

         if (message != null) {
             if (mStorageHint == null) {
                 mStorageHint = OnScreenHint.makeText(this, message);
             } else {
                 mStorageHint.setText(message);
             }
             mStorageHint.show();
         } else if (mStorageHint != null) {
             mStorageHint.cancel();
             mStorageHint = null;
         }
     }

     protected void gotoGallery() {
         // Move the next picture with capture animation. "1" means next.
         mAppBridge.switchWithCaptureAnimation(1);
     }

     // Call this after setContentView.
     public ScreenNail createCameraScreenNail(boolean getPictures) {
         mCameraAppView = findViewById(R.id.camera_app_root);
         Bundle data = new Bundle();
         String path;
         if (getPictures) {
             if (mSecureCamera) {
                 path = "/secure/all/" + sSecureAlbumId;
             } else {
                 path = "/local/all/" + MediaSetUtils.CAMERA_BUCKET_ID;
             }
         } else {
             path = "/local/all/0"; // Use 0 so gallery does not show anything.
         }
         data.putString(PhotoPage.KEY_MEDIA_SET_PATH, path);
         data.putString(PhotoPage.KEY_MEDIA_ITEM_PATH, path);
         data.putBoolean(PhotoPage.KEY_SHOW_WHEN_LOCKED, mSecureCamera);

         // Send an AppBridge to gallery to enable the camera preview.
         if (mAppBridge != null) {
             mCameraScreenNail.recycle();
         }
         mAppBridge = new MyAppBridge();
         data.putParcelable(PhotoPage.KEY_APP_BRIDGE, mAppBridge);
         if (getStateManager().getStateCount() == 0) {
             getStateManager().startState(FilmstripPage.class, data);
         } else {
             getStateManager().switchState(getStateManager().getTopState(),
                     FilmstripPage.class, data);
         }
         mCameraScreenNail = mAppBridge.getCameraScreenNail();
         return mCameraScreenNail;
     }

     // Call this after setContentView.
     protected ScreenNail reuseCameraScreenNail(boolean getPictures) {
         mCameraAppView = findViewById(R.id.camera_app_root);
         Bundle data = new Bundle();
         String path;
         if (getPictures) {
             if (mSecureCamera) {
                 path = "/secure/all/" + sSecureAlbumId;
             } else {
                 path = "/local/all/" + MediaSetUtils.CAMERA_BUCKET_ID;
             }
         } else {
             path = "/local/all/0"; // Use 0 so gallery does not show anything.
         }
         data.putString(PhotoPage.KEY_MEDIA_SET_PATH, path);
         data.putString(PhotoPage.KEY_MEDIA_ITEM_PATH, path);
         data.putBoolean(PhotoPage.KEY_SHOW_WHEN_LOCKED, mSecureCamera);

         // Send an AppBridge to gallery to enable the camera preview.
         if (mAppBridge == null) {
             mAppBridge = new MyAppBridge();
         }
         data.putParcelable(PhotoPage.KEY_APP_BRIDGE, mAppBridge);
         if (getStateManager().getStateCount() == 0) {
             getStateManager().startState(FilmstripPage.class, data);
         }
         mCameraScreenNail = mAppBridge.getCameraScreenNail();
         return mCameraScreenNail;
     }

     private class HideCameraAppView implements Animation.AnimationListener {
         @Override
         public void onAnimationEnd(Animation animation) {
             // We cannot set this as GONE because we want to receive the
             // onLayoutChange() callback even when we are invisible.
             mCameraAppView.setVisibility(View.INVISIBLE);
         }

         @Override
         public void onAnimationRepeat(Animation animation) {
         }

         @Override
         public void onAnimationStart(Animation animation) {
         }
     }

     protected void updateCameraAppView() {
         // Initialize the animation.
         if (mCameraAppViewFadeIn == null) {
             mCameraAppViewFadeIn = new AlphaAnimation(0f, 1f);
             mCameraAppViewFadeIn.setDuration(CAMERA_APP_VIEW_TOGGLE_TIME);
             mCameraAppViewFadeIn.setInterpolator(new DecelerateInterpolator());

             mCameraAppViewFadeOut = new AlphaAnimation(1f, 0f);
             mCameraAppViewFadeOut.setDuration(CAMERA_APP_VIEW_TOGGLE_TIME);
             mCameraAppViewFadeOut.setInterpolator(new DecelerateInterpolator());
             mCameraAppViewFadeOut.setAnimationListener(new HideCameraAppView());
         }

         if (mShowCameraAppView) {
             mCameraAppView.setVisibility(View.VISIBLE);
             // The "transparent region" is not recomputed when a sibling of
             // SurfaceView changes visibility (unless it involves GONE). It's
             // been broken since 1.0. Call requestLayout to work around it.
             mCameraAppView.requestLayout();
             mCameraAppView.startAnimation(mCameraAppViewFadeIn);
         } else {
             mCameraAppView.startAnimation(mCameraAppViewFadeOut);
         }
     }

     protected void onFullScreenChanged(boolean full) {
         if (mShowCameraAppView == full) return;
         mShowCameraAppView = full;
         if (mPaused || isFinishing()) return;
         updateCameraAppView();
     }

     @Override
     public GalleryActionBar getGalleryActionBar() {
         return mActionBar;
     }

     // Preview frame layout has changed.
     @Override
     public void onLayoutChange(View v, int left, int top, int right, int bottom) {
         if (mAppBridge == null) return;

         int width = right - left;
         int height = bottom - top;
         if (ApiHelper.HAS_SURFACE_TEXTURE) {
             CameraScreenNail screenNail = (CameraScreenNail) mCameraScreenNail;
             if (Util.getDisplayRotation(this) % 180 == 0) {
                 screenNail.setPreviewFrameLayoutSize(width, height);
             } else {
                 // Swap the width and height. Camera screen nail draw() is based on
                 // natural orientation, not the view system orientation.
                 screenNail.setPreviewFrameLayoutSize(height, width);
             }
             notifyScreenNailChanged();
         }
     }

     protected void setSingleTapUpListener(View singleTapArea) {
         mSingleTapArea = singleTapArea;
     }

     private boolean onSingleTapUp(int x, int y) {
         // Ignore if listener is null or the camera control is invisible.
         if (mSingleTapArea == null || !mShowCameraAppView) return false;

         int[] relativeLocation = Util.getRelativeLocation((View) getGLRoot(),
                 mSingleTapArea);
         x -= relativeLocation[0];
         y -= relativeLocation[1];
         if (x >= 0 && x < mSingleTapArea.getWidth() && y >= 0
                 && y < mSingleTapArea.getHeight()) {
             onSingleTapUp(mSingleTapArea, x, y);
             return true;
         }
         return false;
     }

     protected void onSingleTapUp(View view, int x, int y) {
     }

     public void setSwipingEnabled(boolean enabled) {
         mAppBridge.setSwipingEnabled(enabled);
     }

     public void notifyScreenNailChanged() {
         mAppBridge.notifyScreenNailChanged();
     }

     protected void onPreviewTextureCopied() {
     }

     protected void onCaptureTextureCopied() {
     }

     protected void addSecureAlbumItemIfNeeded(boolean isVideo, Uri uri) {
         if (mSecureCamera) {
             int id = Integer.parseInt(uri.getLastPathSegment());
             mAppBridge.addSecureAlbumItem(isVideo, id);
         }
     }

     public boolean isSecureCamera() {
         return mSecureCamera;
     }

     //////////////////////////////////////////////////////////////////////////
     //  The is the communication interface between the Camera Application and
     //  the Gallery PhotoPage.
     //////////////////////////////////////////////////////////////////////////

     class MyAppBridge extends AppBridge implements CameraScreenNail.Listener {
         @SuppressWarnings("hiding")
         private ScreenNail mCameraScreenNail;
         private Server mServer;

         @Override
         public ScreenNail attachScreenNail() {
             if (mCameraScreenNail == null) {
                 if (ApiHelper.HAS_SURFACE_TEXTURE) {
                     mCameraScreenNail = new CameraScreenNail(this);
                 } else {
                     Bitmap b = BitmapFactory.decodeResource(getResources(),
                             R.drawable.wallpaper_picker_preview);
                     mCameraScreenNail = new StaticBitmapScreenNail(b);
                 }
             }
             return mCameraScreenNail;
         }

         @Override
         public void detachScreenNail() {
             mCameraScreenNail = null;
         }

         public ScreenNail getCameraScreenNail() {
             return mCameraScreenNail;
         }

         // Return true if the tap is consumed.
         @Override
         public boolean onSingleTapUp(int x, int y) {
             return ActivityBase.this.onSingleTapUp(x, y);
         }

         // This is used to notify that the screen nail will be drawn in full screen
         // or not in next draw() call.
         @Override
         public void onFullScreenChanged(boolean full) {
             ActivityBase.this.onFullScreenChanged(full);
         }

         @Override
         public void requestRender() {
             getGLRoot().requestRenderForced();
         }

         @Override
         public void onPreviewTextureCopied() {
             ActivityBase.this.onPreviewTextureCopied();
         }

         @Override
         public void onCaptureTextureCopied() {
             ActivityBase.this.onCaptureTextureCopied();
         }

         @Override
         public void setServer(Server s) {
             mServer = s;
         }

         @Override
         public boolean isPanorama() {
             return ActivityBase.this.isPanoramaActivity();
         }

         @Override
         public boolean isStaticCamera() {
             return !ApiHelper.HAS_SURFACE_TEXTURE;
         }

         public void addSecureAlbumItem(boolean isVideo, int id) {
             if (mServer != null) mServer.addSecureAlbumItem(isVideo, id);
         }

         private void setCameraRelativeFrame(Rect frame) {
             if (mServer != null) mServer.setCameraRelativeFrame(frame);
         }

         private void switchWithCaptureAnimation(int offset) {
             if (mServer != null) mServer.switchWithCaptureAnimation(offset);
         }

         private void setSwipingEnabled(boolean enabled) {
             if (mServer != null) mServer.setSwipingEnabled(enabled);
         }

         private void notifyScreenNailChanged() {
             if (mServer != null) mServer.notifyScreenNailChanged();
         }
     }
 }
	/*
	* Copyright (C) 2009 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.camera;

	import android.content.BroadcastReceiver;
	import android.content.Context;
	import android.content.Intent;
	import android.content.IntentFilter;
	import android.graphics.Bitmap;
	import android.graphics.BitmapFactory;
	import android.graphics.Rect;
	import android.hardware.Camera.Parameters;
	import android.net.Uri;
	import android.os.Bundle;
	import android.os.Handler;
	import android.os.Message;
	import android.view.KeyEvent;
	import android.view.View;
	import android.view.Window;
	import android.view.WindowManager;
	import android.view.animation.AlphaAnimation;
	import android.view.animation.Animation;
	import android.view.animation.DecelerateInterpolator;

	import com.android.camera.ui.LayoutChangeNotifier;
	import com.android.camera.ui.PopupManager;
	import com.android.gallery3d.app.AbstractGalleryActivity;
	import com.android.gallery3d.app.AppBridge;
	import com.android.gallery3d.app.FilmstripPage;
	import com.android.gallery3d.app.GalleryActionBar;
	import com.android.gallery3d.app.PhotoPage;
	import com.android.gallery3d.common.ApiHelper;
	import com.android.gallery3d.ui.ScreenNail;
	import com.android.gallery3d.util.MediaSetUtils;

	/**
	* Superclass of camera activity.
	*/
	public abstract class ActivityBase extends AbstractGalleryActivity
	implements LayoutChangeNotifier.Listener {

	private static final String TAG = "ActivityBase";
	private static final int CAMERA_APP_VIEW_TOGGLE_TIME = 100; // milliseconds
	private static final String INTENT_ACTION_STILL_IMAGE_CAMERA_SECURE =
	"android.media.action.STILL_IMAGE_CAMERA_SECURE";
	public static final String ACTION_IMAGE_CAPTURE_SECURE =
	"android.media.action.IMAGE_CAPTURE_SECURE";
	// The intent extra for camera from secure lock screen. True if the gallery
	// should only show newly captured pictures. sSecureAlbumId does not
	// increment. This is used when switching between camera, camcorder, and
	// panorama. If the extra is not set, it is in the normal camera mode.
	public static final String SECURE_CAMERA_EXTRA = "secure_camera";

	private int mResultCodeForTesting;
	private Intent mResultDataForTesting;
	private OnScreenHint mStorageHint;
	private View mSingleTapArea;

	protected boolean mOpenCameraFail;
	protected boolean mCameraDisabled;
	protected CameraManager.CameraProxy mCameraDevice;
	protected Parameters mParameters;
	// The activity is paused. The classes that extend this class should set
	// mPaused the first thing in onResume/onPause.
	protected boolean mPaused;
	protected GalleryActionBar mActionBar;

	// multiple cameras support
	protected int mNumberOfCameras;
	protected int mCameraId;
	// The activity is going to switch to the specified camera id. This is
	// needed because texture copy is done in GL thread. -1 means camera is not
	// switching.
	protected int mPendingSwitchCameraId = -1;

	protected MyAppBridge mAppBridge;
	protected ScreenNail mCameraScreenNail; // This shows camera preview.
	// The view containing only camera related widgets like control panel,
	// indicator bar, focus indicator and etc.
	protected View mCameraAppView;
	protected boolean mShowCameraAppView = true;
	private Animation mCameraAppViewFadeIn;
	private Animation mCameraAppViewFadeOut;
	// Secure album id. This should be incremented every time the camera is
	// launched from the secure lock screen. The id should be the same when
	// switching between camera, camcorder, and panorama.
	protected static int sSecureAlbumId;
	// True if the camera is started from secure lock screen.
	protected boolean mSecureCamera;
	private static boolean sFirstStartAfterScreenOn = true;

	private long mStorageSpace = Storage.LOW_STORAGE_THRESHOLD;
	private static final int UPDATE_STORAGE_HINT = 0;
	private final Handler mHandler = new Handler() {
	@Override
	public void handleMessage(Message msg) {
	switch (msg.what) {
	case UPDATE_STORAGE_HINT:
	updateStorageHint();
	return;
	}
	}
	};

	private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	String action = intent.getAction();
	if (action.equals(Intent.ACTION_MEDIA_MOUNTED)
	\|\| action.equals(Intent.ACTION_MEDIA_UNMOUNTED)
	\|\| action.equals(Intent.ACTION_MEDIA_CHECKING)
	\|\| action.equals(Intent.ACTION_MEDIA_SCANNER_FINISHED)) {
	updateStorageSpaceAndHint();
	}
	}
	};

	// close activity when screen turns off
	private BroadcastReceiver mScreenOffReceiver = new BroadcastReceiver() {
	@Override
	public void onReceive(Context context, Intent intent) {
	finish();
	}
	};

	private static BroadcastReceiver sScreenOffReceiver;
	private static class ScreenOffReceiver extends BroadcastReceiver {
	@Override
	public void onReceive(Context context, Intent intent) {
	sFirstStartAfterScreenOn = true;
	}
	}

	public static boolean isFirstStartAfterScreenOn() {
	return sFirstStartAfterScreenOn;
	}

	public static void resetFirstStartAfterScreenOn() {
	sFirstStartAfterScreenOn = false;
	}

	protected class CameraOpenThread extends Thread {
	@Override
	public void run() {
	try {
	mCameraDevice = Util.openCamera(ActivityBase.this, mCameraId);
	mParameters = mCameraDevice.getParameters();
	} catch (CameraHardwareException e) {
	mOpenCameraFail = true;
	} catch (CameraDisabledException e) {
	mCameraDisabled = true;
	}
	}
	}

	@Override
	public void onCreate(Bundle icicle) {
	super.disableToggleStatusBar();
	// Set a theme with action bar. It is not specified in manifest because
	// we want to hide it by default. setTheme must happen before
	// setContentView.
	//
	// This must be set before we call super.onCreate(), where the window's
	// background is removed.
	setTheme(R.style.Theme_Gallery);
	getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
	if (ApiHelper.HAS_ACTION_BAR) {
	requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
	} else {
	requestWindowFeature(Window.FEATURE_NO_TITLE);
	}

	// Check if this is in the secure camera mode.
	Intent intent = getIntent();
	String action = intent.getAction();
	if (INTENT_ACTION_STILL_IMAGE_CAMERA_SECURE.equals(action)) {
	mSecureCamera = true;
	// Use a new album when this is started from the lock screen.
	sSecureAlbumId++;
	} else if (ACTION_IMAGE_CAPTURE_SECURE.equals(action)) {
	mSecureCamera = true;
	} else {
	mSecureCamera = intent.getBooleanExtra(SECURE_CAMERA_EXTRA, false);
	}
	if (mSecureCamera) {
	IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_OFF);
	registerReceiver(mScreenOffReceiver, filter);
	if (sScreenOffReceiver == null) {
	sScreenOffReceiver = new ScreenOffReceiver();
	getApplicationContext().registerReceiver(sScreenOffReceiver, filter);
	}
	}
	super.onCreate(icicle);
	}

	public boolean isPanoramaActivity() {
	return false;
	}

	@Override
	protected void onResume() {
	super.onResume();

	installIntentFilter();
	if (updateStorageHintOnResume()) {
	updateStorageSpace();
	mHandler.sendEmptyMessageDelayed(UPDATE_STORAGE_HINT, 200);
	}
	}

	@Override
	protected void onPause() {
	super.onPause();

	if (mStorageHint != null) {
	mStorageHint.cancel();
	mStorageHint = null;
	}

	unregisterReceiver(mReceiver);
	}

	@Override
	public void setContentView(int layoutResID) {
	super.setContentView(layoutResID);
	// getActionBar() should be after setContentView
	mActionBar = new GalleryActionBar(this);
	mActionBar.hide();
	}

	@Override
	public boolean onSearchRequested() {
	return false;
	}

	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
	// Prevent software keyboard or voice search from showing up.
	if (keyCode == KeyEvent.KEYCODE_SEARCH
	\|\| keyCode == KeyEvent.KEYCODE_MENU) {
	if (event.isLongPress()) return true;
	}
	if (keyCode == KeyEvent.KEYCODE_MENU && mShowCameraAppView) {
	return true;
	}

	return super.onKeyDown(keyCode, event);
	}

	@Override
	public boolean onKeyUp(int keyCode, KeyEvent event) {
	if (keyCode == KeyEvent.KEYCODE_MENU && mShowCameraAppView) {
	return true;
	}
	return super.onKeyUp(keyCode, event);
	}

	protected void setResultEx(int resultCode) {
	mResultCodeForTesting = resultCode;
	setResult(resultCode);
	}

	protected void setResultEx(int resultCode, Intent data) {
	mResultCodeForTesting = resultCode;
	mResultDataForTesting = data;
	setResult(resultCode, data);
	}

	public int getResultCode() {
	return mResultCodeForTesting;
	}

	public Intent getResultData() {
	return mResultDataForTesting;
	}

	@Override
	protected void onDestroy() {
	PopupManager.removeInstance(this);
	if (mSecureCamera) unregisterReceiver(mScreenOffReceiver);
	super.onDestroy();
	}

	protected void installIntentFilter() {
	// install an intent filter to receive SD card related events.
	IntentFilter intentFilter =
	new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
	intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
	intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
	intentFilter.addAction(Intent.ACTION_MEDIA_CHECKING);
	intentFilter.addDataScheme("file");
	registerReceiver(mReceiver, intentFilter);
	}

	protected void updateStorageSpace() {
	mStorageSpace = Storage.getAvailableSpace();
	}

	protected long getStorageSpace() {
	return mStorageSpace;
	}

	protected void updateStorageSpaceAndHint() {
	updateStorageSpace();
	updateStorageHint(mStorageSpace);
	}

	protected void updateStorageHint() {
	updateStorageHint(mStorageSpace);
	}

	protected boolean updateStorageHintOnResume() {
	return true;
	}

	protected void updateStorageHint(long storageSpace) {
	String message = null;
	if (storageSpace == Storage.UNAVAILABLE) {
	message = getString(R.string.no_storage);
	} else if (storageSpace == Storage.PREPARING) {
	message = getString(R.string.preparing_sd);
	} else if (storageSpace == Storage.UNKNOWN_SIZE) {
	message = getString(R.string.access_sd_fail);
	} else if (storageSpace <= Storage.LOW_STORAGE_THRESHOLD) {
	message = getString(R.string.spaceIsLow_content);
	}

	if (message != null) {
	if (mStorageHint == null) {
	mStorageHint = OnScreenHint.makeText(this, message);
	} else {
	mStorageHint.setText(message);
	}
	mStorageHint.show();
	} else if (mStorageHint != null) {
	mStorageHint.cancel();
	mStorageHint = null;
	}
	}

	protected void gotoGallery() {
	// Move the next picture with capture animation. "1" means next.
	mAppBridge.switchWithCaptureAnimation(1);
	}

	// Call this after setContentView.
	public ScreenNail createCameraScreenNail(boolean getPictures) {
	mCameraAppView = findViewById(R.id.camera_app_root);
	Bundle data = new Bundle();
	String path;
	if (getPictures) {
	if (mSecureCamera) {
	path = "/secure/all/" + sSecureAlbumId;
	} else {
	path = "/local/all/" + MediaSetUtils.CAMERA_BUCKET_ID;
	}
	} else {
	path = "/local/all/0"; // Use 0 so gallery does not show anything.
	}
	data.putString(PhotoPage.KEY_MEDIA_SET_PATH, path);
	data.putString(PhotoPage.KEY_MEDIA_ITEM_PATH, path);
	data.putBoolean(PhotoPage.KEY_SHOW_WHEN_LOCKED, mSecureCamera);

	// Send an AppBridge to gallery to enable the camera preview.
	if (mAppBridge != null) {
	mCameraScreenNail.recycle();
	}
	mAppBridge = new MyAppBridge();
	data.putParcelable(PhotoPage.KEY_APP_BRIDGE, mAppBridge);
	if (getStateManager().getStateCount() == 0) {
	getStateManager().startState(FilmstripPage.class, data);
	} else {
	getStateManager().switchState(getStateManager().getTopState(),
	FilmstripPage.class, data);
	}
	mCameraScreenNail = mAppBridge.getCameraScreenNail();
	return mCameraScreenNail;
	}

	// Call this after setContentView.
	protected ScreenNail reuseCameraScreenNail(boolean getPictures) {
	mCameraAppView = findViewById(R.id.camera_app_root);
	Bundle data = new Bundle();
	String path;
	if (getPictures) {
	if (mSecureCamera) {
	path = "/secure/all/" + sSecureAlbumId;
	} else {
	path = "/local/all/" + MediaSetUtils.CAMERA_BUCKET_ID;
	}
	} else {
	path = "/local/all/0"; // Use 0 so gallery does not show anything.
	}
	data.putString(PhotoPage.KEY_MEDIA_SET_PATH, path);
	data.putString(PhotoPage.KEY_MEDIA_ITEM_PATH, path);
	data.putBoolean(PhotoPage.KEY_SHOW_WHEN_LOCKED, mSecureCamera);

	// Send an AppBridge to gallery to enable the camera preview.
	if (mAppBridge == null) {
	mAppBridge = new MyAppBridge();
	}
	data.putParcelable(PhotoPage.KEY_APP_BRIDGE, mAppBridge);
	if (getStateManager().getStateCount() == 0) {
	getStateManager().startState(FilmstripPage.class, data);
	}
	mCameraScreenNail = mAppBridge.getCameraScreenNail();
	return mCameraScreenNail;
	}

	private class HideCameraAppView implements Animation.AnimationListener {
	@Override
	public void onAnimationEnd(Animation animation) {
	// We cannot set this as GONE because we want to receive the
	// onLayoutChange() callback even when we are invisible.
	mCameraAppView.setVisibility(View.INVISIBLE);
	}

	@Override
	public void onAnimationRepeat(Animation animation) {
	}

	@Override
	public void onAnimationStart(Animation animation) {
	}
	}

	protected void updateCameraAppView() {
	// Initialize the animation.
	if (mCameraAppViewFadeIn == null) {
	mCameraAppViewFadeIn = new AlphaAnimation(0f, 1f);
	mCameraAppViewFadeIn.setDuration(CAMERA_APP_VIEW_TOGGLE_TIME);
	mCameraAppViewFadeIn.setInterpolator(new DecelerateInterpolator());

	mCameraAppViewFadeOut = new AlphaAnimation(1f, 0f);
	mCameraAppViewFadeOut.setDuration(CAMERA_APP_VIEW_TOGGLE_TIME);
	mCameraAppViewFadeOut.setInterpolator(new DecelerateInterpolator());
	mCameraAppViewFadeOut.setAnimationListener(new HideCameraAppView());
	}

	if (mShowCameraAppView) {
	mCameraAppView.setVisibility(View.VISIBLE);
	// The "transparent region" is not recomputed when a sibling of
	// SurfaceView changes visibility (unless it involves GONE). It's
	// been broken since 1.0. Call requestLayout to work around it.
	mCameraAppView.requestLayout();
	mCameraAppView.startAnimation(mCameraAppViewFadeIn);
	} else {
	mCameraAppView.startAnimation(mCameraAppViewFadeOut);
	}
	}

	protected void onFullScreenChanged(boolean full) {
	if (mShowCameraAppView == full) return;
	mShowCameraAppView = full;
	if (mPaused \|\| isFinishing()) return;
	updateCameraAppView();
	}

	@Override
	public GalleryActionBar getGalleryActionBar() {
	return mActionBar;
	}

	// Preview frame layout has changed.
	@Override
	public void onLayoutChange(View v, int left, int top, int right, int bottom) {
	if (mAppBridge == null) return;

	int width = right - left;
	int height = bottom - top;
	if (ApiHelper.HAS_SURFACE_TEXTURE) {
	CameraScreenNail screenNail = (CameraScreenNail) mCameraScreenNail;
	if (Util.getDisplayRotation(this) % 180 == 0) {
	screenNail.setPreviewFrameLayoutSize(width, height);
	} else {
	// Swap the width and height. Camera screen nail draw() is based on
	// natural orientation, not the view system orientation.
	screenNail.setPreviewFrameLayoutSize(height, width);
	}
	notifyScreenNailChanged();
	}
	}

	protected void setSingleTapUpListener(View singleTapArea) {
	mSingleTapArea = singleTapArea;
	}

	private boolean onSingleTapUp(int x, int y) {
	// Ignore if listener is null or the camera control is invisible.
	if (mSingleTapArea == null \|\| !mShowCameraAppView) return false;

	int[] relativeLocation = Util.getRelativeLocation((View) getGLRoot(),
	mSingleTapArea);
	x -= relativeLocation[0];
	y -= relativeLocation[1];
	if (x >= 0 && x < mSingleTapArea.getWidth() && y >= 0
	&& y < mSingleTapArea.getHeight()) {
	onSingleTapUp(mSingleTapArea, x, y);
	return true;
	}
	return false;
	}

	protected void onSingleTapUp(View view, int x, int y) {
	}

	public void setSwipingEnabled(boolean enabled) {
	mAppBridge.setSwipingEnabled(enabled);
	}

	public void notifyScreenNailChanged() {
	mAppBridge.notifyScreenNailChanged();
	}

	protected void onPreviewTextureCopied() {
	}

	protected void onCaptureTextureCopied() {
	}

	protected void addSecureAlbumItemIfNeeded(boolean isVideo, Uri uri) {
	if (mSecureCamera) {
	int id = Integer.parseInt(uri.getLastPathSegment());
	mAppBridge.addSecureAlbumItem(isVideo, id);
	}
	}

	public boolean isSecureCamera() {
	return mSecureCamera;
	}

	//////////////////////////////////////////////////////////////////////////
	// The is the communication interface between the Camera Application and
	// the Gallery PhotoPage.
	//////////////////////////////////////////////////////////////////////////

	class MyAppBridge extends AppBridge implements CameraScreenNail.Listener {
	@SuppressWarnings("hiding")
	private ScreenNail mCameraScreenNail;
	private Server mServer;

	@Override
	public ScreenNail attachScreenNail() {
	if (mCameraScreenNail == null) {
	if (ApiHelper.HAS_SURFACE_TEXTURE) {
	mCameraScreenNail = new CameraScreenNail(this);
	} else {
	Bitmap b = BitmapFactory.decodeResource(getResources(),
	R.drawable.wallpaper_picker_preview);
	mCameraScreenNail = new StaticBitmapScreenNail(b);
	}
	}
	return mCameraScreenNail;
	}

	@Override
	public void detachScreenNail() {
	mCameraScreenNail = null;
	}

	public ScreenNail getCameraScreenNail() {
	return mCameraScreenNail;
	}

	// Return true if the tap is consumed.
	@Override
	public boolean onSingleTapUp(int x, int y) {
	return ActivityBase.this.onSingleTapUp(x, y);
	}

	// This is used to notify that the screen nail will be drawn in full screen
	// or not in next draw() call.
	@Override
	public void onFullScreenChanged(boolean full) {
	ActivityBase.this.onFullScreenChanged(full);
	}

	@Override
	public void requestRender() {
	getGLRoot().requestRenderForced();
	}

	@Override
	public void onPreviewTextureCopied() {
	ActivityBase.this.onPreviewTextureCopied();
	}

	@Override
	public void onCaptureTextureCopied() {
	ActivityBase.this.onCaptureTextureCopied();
	}

	@Override
	public void setServer(Server s) {
	mServer = s;
	}

	@Override
	public boolean isPanorama() {
	return ActivityBase.this.isPanoramaActivity();
	}

	@Override
	public boolean isStaticCamera() {
	return !ApiHelper.HAS_SURFACE_TEXTURE;
	}

	public void addSecureAlbumItem(boolean isVideo, int id) {
	if (mServer != null) mServer.addSecureAlbumItem(isVideo, id);
	}

	private void setCameraRelativeFrame(Rect frame) {
	if (mServer != null) mServer.setCameraRelativeFrame(frame);
	}

	private void switchWithCaptureAnimation(int offset) {
	if (mServer != null) mServer.switchWithCaptureAnimation(offset);
	}

	private void setSwipingEnabled(boolean enabled) {
	if (mServer != null) mServer.setSwipingEnabled(enabled);
	}

	private void notifyScreenNailChanged() {
	if (mServer != null) mServer.notifyScreenNailChanged();
	}
	}
	}