apps/SdkController/src/com/android/tools/sdkcontroller/activities/MultiTouchActivity.java - platform/tools/base.git - Git at Google

 /*
  * Copyright (C) 2012 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.tools.sdkcontroller.activities;

 import java.io.ByteArrayInputStream;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;

 import android.graphics.Color;
 import android.os.Bundle;
 import android.os.Message;
 import android.util.Log;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.View.OnTouchListener;
 import android.widget.TextView;

 import com.android.tools.sdkcontroller.R;
 import com.android.tools.sdkcontroller.handlers.MultiTouchChannel;
 import com.android.tools.sdkcontroller.lib.Channel;
 import com.android.tools.sdkcontroller.lib.ProtocolConstants;
 import com.android.tools.sdkcontroller.service.ControllerService.ControllerBinder;
 import com.android.tools.sdkcontroller.service.ControllerService.ControllerListener;
 import com.android.tools.sdkcontroller.utils.ApiHelper;
 import com.android.tools.sdkcontroller.views.MultiTouchView;

 /**
  * Activity that controls and displays the {@link MultiTouchChannel}.
  */
 public class MultiTouchActivity extends BaseBindingActivity
         implements android.os.Handler.Callback {

     @SuppressWarnings("hiding")
     private static String TAG = MultiTouchActivity.class.getSimpleName();
     private static boolean DEBUG = true;

     private volatile MultiTouchChannel mHandler;

     private TextView mTextError;
     private TextView mTextStatus;
     private MultiTouchView mImageView;
     /** Width of the emulator's display. */
     private int mEmulatorWidth = 0;
     /** Height of the emulator's display. */
     private int mEmulatorHeight = 0;
     /** Bitmap storage. */
     private int[] mColors;

     private final TouchListener mTouchListener = new TouchListener();
     private final android.os.Handler mUiHandler = new android.os.Handler(this);

     /** Called when the activity is first created. */
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.multitouch);
         mImageView  = (MultiTouchView) findViewById(R.id.imageView);
         mTextError  = (TextView) findViewById(R.id.textError);
         mTextStatus = (TextView) findViewById(R.id.textStatus);
         updateStatus("Waiting for connection");

         ApiHelper ah = ApiHelper.get();
         ah.View_setSystemUiVisibility(mImageView, View.SYSTEM_UI_FLAG_LOW_PROFILE);
     }

     @Override
     protected void onResume() {
         if (DEBUG) Log.d(TAG, "onResume");
         // BaseBindingActivity.onResume will bind to the service.
         // Note: any initialization related to the service or the handler should
         // go in onServiceConnected() since in this call the service may not be
         // bound yet.
         super.onResume();
         updateError();
     }

     @Override
     protected void onPause() {
         if (DEBUG) Log.d(TAG, "onPause");
         // BaseBindingActivity.onResume will unbind from (but not stop) the service.
         super.onPause();
         mImageView.setEnabled(false);
         updateStatus("Paused");
     }

     // ----------

     @Override
     protected void onServiceConnected() {
         if (DEBUG) Log.d(TAG, "onServiceConnected");
         mHandler = (MultiTouchChannel) getServiceBinder().getChannel(Channel.MULTITOUCH_CHANNEL);
         if (mHandler != null) {
             mHandler.setViewSize(mImageView.getWidth(), mImageView.getHeight());
             mHandler.addUiHandler(mUiHandler);
         }
     }

     @Override
     protected void onServiceDisconnected() {
         if (DEBUG) Log.d(TAG, "onServiceDisconnected");
         if (mHandler != null) {
             mHandler.removeUiHandler(mUiHandler);
             mHandler = null;
         }
     }

     @Override
     protected ControllerListener createControllerListener() {
         return new MultiTouchControllerListener();
     }

     // ----------

     private class MultiTouchControllerListener implements ControllerListener {
         @Override
         public void onErrorChanged() {
             runOnUiThread(new Runnable() {
                 @Override
                 public void run() {
                     updateError();
                 }
             });
         }

         @Override
         public void onStatusChanged() {
             runOnUiThread(new Runnable() {
                 @Override
                 public void run() {
                     ControllerBinder binder = getServiceBinder();
                     if (binder != null) {
                         boolean connected = binder.isEmuConnected();
                         mImageView.setEnabled(connected);
                         updateStatus(connected ? "Emulator connected" : "Emulator disconnected");
                     }
                 }
             });
         }
     }

     // ----------

     /**
      * Implements OnTouchListener interface that receives touch screen events,
      * and reports them to the emulator application.
      */
     class TouchListener implements OnTouchListener {
         /**
          * Touch screen event handler.
          */
         @Override
         public boolean onTouch(View v, MotionEvent event) {
             ByteBuffer bb = null;
             final int action = event.getAction();
             final int action_code = action & MotionEvent.ACTION_MASK;
             final int action_pid_index = action >> MotionEvent.ACTION_POINTER_ID_SHIFT;
             int msg_type = 0;
             MultiTouchChannel h = mHandler;

             // Build message for the emulator.
             switch (action_code) {
                 case MotionEvent.ACTION_MOVE:
                     if (h != null) {
                         bb = ByteBuffer.allocate(
                                 event.getPointerCount() * ProtocolConstants.MT_EVENT_ENTRY_SIZE);
                         bb.order(h.getEndian());
                         for (int n = 0; n < event.getPointerCount(); n++) {
                             mImageView.constructEventMessage(bb, event, n);
                         }
                         msg_type = ProtocolConstants.MT_MOVE;
                     }
                     break;
                 case MotionEvent.ACTION_DOWN:
                     if (h != null) {
                         bb = ByteBuffer.allocate(ProtocolConstants.MT_EVENT_ENTRY_SIZE);
                         bb.order(h.getEndian());
                         mImageView.constructEventMessage(bb, event, action_pid_index);
                         msg_type = ProtocolConstants.MT_FISRT_DOWN;
                     }
                     break;
                 case MotionEvent.ACTION_UP:
                     if (h != null) {
                         bb = ByteBuffer.allocate(ProtocolConstants.MT_EVENT_ENTRY_SIZE);
                         bb.order(h.getEndian());
                         bb.putInt(event.getPointerId(action_pid_index));
                         msg_type = ProtocolConstants.MT_LAST_UP;
                     }
                     break;
                 case MotionEvent.ACTION_POINTER_DOWN:
                     if (h != null) {
                         bb = ByteBuffer.allocate(ProtocolConstants.MT_EVENT_ENTRY_SIZE);
                         bb.order(h.getEndian());
                         mImageView.constructEventMessage(bb, event, action_pid_index);
                         msg_type = ProtocolConstants.MT_POINTER_DOWN;
                     }
                     break;
                 case MotionEvent.ACTION_POINTER_UP:
                     if (h != null) {
                         bb = ByteBuffer.allocate(ProtocolConstants.MT_EVENT_ENTRY_SIZE);
                         bb.order(h.getEndian());
                         bb.putInt(event.getPointerId(action_pid_index));
                         msg_type = ProtocolConstants.MT_POINTER_UP;
                     }
                     break;
                 default:
                     Log.w(TAG, "Unknown action type: " + action_code);
                     return true;
             }

             if (DEBUG && bb != null) Log.d(TAG, bb.toString());

             if (h != null && bb != null) {
                 h.postMessage(msg_type, bb);
             }
             return true;
         }
     } // TouchListener

     /** Implementation of Handler.Callback */
     @Override
     public boolean handleMessage(Message msg) {
         switch (msg.what) {
         case MultiTouchChannel.EVENT_MT_START:
             MultiTouchChannel h = mHandler;
             if (h != null) {
                 mImageView.setEnabled(true);
                 mImageView.setOnTouchListener(mTouchListener);
             }
             break;
         case MultiTouchChannel.EVENT_MT_STOP:
             mImageView.setOnTouchListener(null);
             break;
         case MultiTouchChannel.EVENT_FRAME_BUFFER:
             onFrameBuffer(((ByteBuffer) msg.obj).array());
             mHandler.postMessage(ProtocolConstants.MT_FB_HANDLED, (byte[]) null);
             break;
         }
         return true; // we consumed this message
     }

     /**
      * Called when a BLOB query is received from the emulator.
      * <p/>
      * This query is used to deliver framebuffer updates in the emulator. The
      * blob contains an update header, followed by the bitmap containing updated
      * rectangle. The header is defined as MTFrameHeader structure in
      * external/qemu/android/multitouch-port.h
      * <p/>
      * NOTE: This method is called from the I/O loop, so all communication with
      * the emulator will be "on hold" until this method returns.
      *
      * TODO ===> CHECK that we can consume that array from a different thread than the producer's.
      * E.g. does the produce reuse the same array or does it generate a new one each time?
      *
      * @param array contains BLOB data for the query.
      */
     private void onFrameBuffer(byte[] array) {
         final ByteBuffer bb = ByteBuffer.wrap(array);
         bb.order(ByteOrder.LITTLE_ENDIAN);

         // Read frame header.
         final int header_size = bb.getInt();
         final int disp_width = bb.getInt();
         final int disp_height = bb.getInt();
         final int x = bb.getInt();
         final int y = bb.getInt();
         final int w = bb.getInt();
         final int h = bb.getInt();
         final int bpl = bb.getInt();
         final int bpp = bb.getInt();
         final int format = bb.getInt();

         // Update application display.
         updateDisplay(disp_width, disp_height);

         if (format == ProtocolConstants.MT_FRAME_JPEG) {
             /*
              * Framebuffer is in JPEG format.
              */

             final ByteArrayInputStream jpg = new ByteArrayInputStream(bb.array());
             // Advance input stream to JPEG image.
             jpg.skip(header_size);
             // Draw the image.
             mImageView.drawJpeg(x, y, w, h, jpg);
         } else {
             /*
              * Framebuffer is in a raw RGB format.
              */

             final int pixel_num = h * w;
             // Advance stream to the beginning of framebuffer data.
             bb.position(header_size);

             // Make sure that mColors is large enough to contain the
             // update bitmap.
             if (mColors == null || mColors.length < pixel_num) {
                 mColors = new int[pixel_num];
             }

             // Convert the blob bitmap into bitmap that we will display.
             if (format == ProtocolConstants.MT_FRAME_RGB565) {
                 for (int n = 0; n < pixel_num; n++) {
                     // Blob bitmap is in RGB565 format.
                     final int color = bb.getShort();
                     final int r = ((color & 0xf800) >> 8) | ((color & 0xf800) >> 14);
                     final int g = ((color & 0x7e0) >> 3) | ((color & 0x7e0) >> 9);
                     final int b = ((color & 0x1f) << 3) | ((color & 0x1f) >> 2);
                     mColors[n] = Color.rgb(r, g, b);
                 }
             } else if (format == ProtocolConstants.MT_FRAME_RGB888) {
                 for (int n = 0; n < pixel_num; n++) {
                     // Blob bitmap is in RGB565 format.
                     final int r = bb.getChar();
                     final int g = bb.getChar();
                     final int b = bb.getChar();
                     mColors[n] = Color.rgb(r, g, b);
                 }
             } else {
                 Log.w(TAG, "Invalid framebuffer format: " + format);
                 return;
             }
             mImageView.drawBitmap(x, y, w, h, mColors);
         }
     }

     /**
      * Updates application's screen accordingly to the emulator screen.
      *
      * @param e_width Width of the emulator screen.
      * @param e_height Height of the emulator screen.
      */
     private void updateDisplay(int e_width, int e_height) {
         if (e_width != mEmulatorWidth || e_height != mEmulatorHeight) {
             mEmulatorWidth = e_width;
             mEmulatorHeight = e_height;

             boolean rotateDisplay = false;
             int w = mImageView.getWidth();
             int h = mImageView.getHeight();
             if (w > h != e_width > e_height) {
                 rotateDisplay = true;
                 int tmp = w;
                 w = h;
                 h = tmp;
             }

             float dx = (float) w / (float) e_width;
             float dy = (float) h / (float) e_height;
             mImageView.setDxDy(dx, dy, rotateDisplay);
             if (DEBUG) Log.d(TAG, "Dispay updated: " + e_width + " x " + e_height +
                     " -> " + w + " x " + h + " ratio: " +
                     dx + " x " + dy);
         }
     }

     // ----------

     private void updateStatus(String status) {
         mTextStatus.setVisibility(status == null ? View.GONE : View.VISIBLE);
         if (status != null) mTextStatus.setText(status);
     }

     private void updateError() {
         ControllerBinder binder = getServiceBinder();
         String error = binder == null ? "" : binder.getServiceError();
         if (error == null) {
             error = "";
         }

         mTextError.setVisibility(error.length() == 0 ? View.GONE : View.VISIBLE);
         mTextError.setText(error);
     }
 }
	/*
	* Copyright (C) 2012 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.tools.sdkcontroller.activities;

	import java.io.ByteArrayInputStream;
	import java.nio.ByteBuffer;
	import java.nio.ByteOrder;

	import android.graphics.Color;
	import android.os.Bundle;
	import android.os.Message;
	import android.util.Log;
	import android.view.MotionEvent;
	import android.view.View;
	import android.view.View.OnTouchListener;
	import android.widget.TextView;

	import com.android.tools.sdkcontroller.R;
	import com.android.tools.sdkcontroller.handlers.MultiTouchChannel;
	import com.android.tools.sdkcontroller.lib.Channel;
	import com.android.tools.sdkcontroller.lib.ProtocolConstants;
	import com.android.tools.sdkcontroller.service.ControllerService.ControllerBinder;
	import com.android.tools.sdkcontroller.service.ControllerService.ControllerListener;
	import com.android.tools.sdkcontroller.utils.ApiHelper;
	import com.android.tools.sdkcontroller.views.MultiTouchView;

	/**
	* Activity that controls and displays the {@link MultiTouchChannel}.
	*/
	public class MultiTouchActivity extends BaseBindingActivity
	implements android.os.Handler.Callback {

	@SuppressWarnings("hiding")
	private static String TAG = MultiTouchActivity.class.getSimpleName();
	private static boolean DEBUG = true;

	private volatile MultiTouchChannel mHandler;

	private TextView mTextError;
	private TextView mTextStatus;
	private MultiTouchView mImageView;
	/** Width of the emulator's display. */
	private int mEmulatorWidth = 0;
	/** Height of the emulator's display. */
	private int mEmulatorHeight = 0;
	/** Bitmap storage. */
	private int[] mColors;

	private final TouchListener mTouchListener = new TouchListener();
	private final android.os.Handler mUiHandler = new android.os.Handler(this);

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.multitouch);
	mImageView = (MultiTouchView) findViewById(R.id.imageView);
	mTextError = (TextView) findViewById(R.id.textError);
	mTextStatus = (TextView) findViewById(R.id.textStatus);
	updateStatus("Waiting for connection");

	ApiHelper ah = ApiHelper.get();
	ah.View_setSystemUiVisibility(mImageView, View.SYSTEM_UI_FLAG_LOW_PROFILE);
	}

	@Override
	protected void onResume() {
	if (DEBUG) Log.d(TAG, "onResume");
	// BaseBindingActivity.onResume will bind to the service.
	// Note: any initialization related to the service or the handler should
	// go in onServiceConnected() since in this call the service may not be
	// bound yet.
	super.onResume();
	updateError();
	}

	@Override
	protected void onPause() {
	if (DEBUG) Log.d(TAG, "onPause");
	// BaseBindingActivity.onResume will unbind from (but not stop) the service.
	super.onPause();
	mImageView.setEnabled(false);
	updateStatus("Paused");
	}

	// ----------

	@Override
	protected void onServiceConnected() {
	if (DEBUG) Log.d(TAG, "onServiceConnected");
	mHandler = (MultiTouchChannel) getServiceBinder().getChannel(Channel.MULTITOUCH_CHANNEL);
	if (mHandler != null) {
	mHandler.setViewSize(mImageView.getWidth(), mImageView.getHeight());
	mHandler.addUiHandler(mUiHandler);
	}
	}

	@Override
	protected void onServiceDisconnected() {
	if (DEBUG) Log.d(TAG, "onServiceDisconnected");
	if (mHandler != null) {
	mHandler.removeUiHandler(mUiHandler);
	mHandler = null;
	}
	}

	@Override
	protected ControllerListener createControllerListener() {
	return new MultiTouchControllerListener();
	}

	// ----------

	private class MultiTouchControllerListener implements ControllerListener {
	@Override
	public void onErrorChanged() {
	runOnUiThread(new Runnable() {
	@Override
	public void run() {
	updateError();
	}
	});
	}

	@Override
	public void onStatusChanged() {
	runOnUiThread(new Runnable() {
	@Override
	public void run() {
	ControllerBinder binder = getServiceBinder();
	if (binder != null) {
	boolean connected = binder.isEmuConnected();
	mImageView.setEnabled(connected);
	updateStatus(connected ? "Emulator connected" : "Emulator disconnected");
	}
	}
	});
	}
	}

	// ----------

	/**
	* Implements OnTouchListener interface that receives touch screen events,
	* and reports them to the emulator application.
	*/
	class TouchListener implements OnTouchListener {
	/**
	* Touch screen event handler.
	*/
	@Override
	public boolean onTouch(View v, MotionEvent event) {
	ByteBuffer bb = null;
	final int action = event.getAction();
	final int action_code = action & MotionEvent.ACTION_MASK;
	final int action_pid_index = action >> MotionEvent.ACTION_POINTER_ID_SHIFT;
	int msg_type = 0;
	MultiTouchChannel h = mHandler;

	// Build message for the emulator.
	switch (action_code) {
	case MotionEvent.ACTION_MOVE:
	if (h != null) {
	bb = ByteBuffer.allocate(
	event.getPointerCount() * ProtocolConstants.MT_EVENT_ENTRY_SIZE);
	bb.order(h.getEndian());
	for (int n = 0; n < event.getPointerCount(); n++) {
	mImageView.constructEventMessage(bb, event, n);
	}
	msg_type = ProtocolConstants.MT_MOVE;
	}
	break;
	case MotionEvent.ACTION_DOWN:
	if (h != null) {
	bb = ByteBuffer.allocate(ProtocolConstants.MT_EVENT_ENTRY_SIZE);
	bb.order(h.getEndian());
	mImageView.constructEventMessage(bb, event, action_pid_index);
	msg_type = ProtocolConstants.MT_FISRT_DOWN;
	}
	break;
	case MotionEvent.ACTION_UP:
	if (h != null) {
	bb = ByteBuffer.allocate(ProtocolConstants.MT_EVENT_ENTRY_SIZE);
	bb.order(h.getEndian());
	bb.putInt(event.getPointerId(action_pid_index));
	msg_type = ProtocolConstants.MT_LAST_UP;
	}
	break;
	case MotionEvent.ACTION_POINTER_DOWN:
	if (h != null) {
	bb = ByteBuffer.allocate(ProtocolConstants.MT_EVENT_ENTRY_SIZE);
	bb.order(h.getEndian());
	mImageView.constructEventMessage(bb, event, action_pid_index);
	msg_type = ProtocolConstants.MT_POINTER_DOWN;
	}
	break;
	case MotionEvent.ACTION_POINTER_UP:
	if (h != null) {
	bb = ByteBuffer.allocate(ProtocolConstants.MT_EVENT_ENTRY_SIZE);
	bb.order(h.getEndian());
	bb.putInt(event.getPointerId(action_pid_index));
	msg_type = ProtocolConstants.MT_POINTER_UP;
	}
	break;
	default:
	Log.w(TAG, "Unknown action type: " + action_code);
	return true;
	}

	if (DEBUG && bb != null) Log.d(TAG, bb.toString());

	if (h != null && bb != null) {
	h.postMessage(msg_type, bb);
	}
	return true;
	}
	} // TouchListener

	/** Implementation of Handler.Callback */
	@Override
	public boolean handleMessage(Message msg) {
	switch (msg.what) {
	case MultiTouchChannel.EVENT_MT_START:
	MultiTouchChannel h = mHandler;
	if (h != null) {
	mImageView.setEnabled(true);
	mImageView.setOnTouchListener(mTouchListener);
	}
	break;
	case MultiTouchChannel.EVENT_MT_STOP:
	mImageView.setOnTouchListener(null);
	break;
	case MultiTouchChannel.EVENT_FRAME_BUFFER:
	onFrameBuffer(((ByteBuffer) msg.obj).array());
	mHandler.postMessage(ProtocolConstants.MT_FB_HANDLED, (byte[]) null);
	break;
	}
	return true; // we consumed this message
	}

	/**
	* Called when a BLOB query is received from the emulator.
	* <p/>
	* This query is used to deliver framebuffer updates in the emulator. The
	* blob contains an update header, followed by the bitmap containing updated
	* rectangle. The header is defined as MTFrameHeader structure in
	* external/qemu/android/multitouch-port.h
	* <p/>
	* NOTE: This method is called from the I/O loop, so all communication with
	* the emulator will be "on hold" until this method returns.
	*
	* TODO ===> CHECK that we can consume that array from a different thread than the producer's.
	* E.g. does the produce reuse the same array or does it generate a new one each time?
	*
	* @param array contains BLOB data for the query.
	*/
	private void onFrameBuffer(byte[] array) {
	final ByteBuffer bb = ByteBuffer.wrap(array);
	bb.order(ByteOrder.LITTLE_ENDIAN);

	// Read frame header.
	final int header_size = bb.getInt();
	final int disp_width = bb.getInt();
	final int disp_height = bb.getInt();
	final int x = bb.getInt();
	final int y = bb.getInt();
	final int w = bb.getInt();
	final int h = bb.getInt();
	final int bpl = bb.getInt();
	final int bpp = bb.getInt();
	final int format = bb.getInt();

	// Update application display.
	updateDisplay(disp_width, disp_height);

	if (format == ProtocolConstants.MT_FRAME_JPEG) {
	/*
	* Framebuffer is in JPEG format.
	*/

	final ByteArrayInputStream jpg = new ByteArrayInputStream(bb.array());
	// Advance input stream to JPEG image.
	jpg.skip(header_size);
	// Draw the image.
	mImageView.drawJpeg(x, y, w, h, jpg);
	} else {
	/*
	* Framebuffer is in a raw RGB format.
	*/

	final int pixel_num = h * w;
	// Advance stream to the beginning of framebuffer data.
	bb.position(header_size);

	// Make sure that mColors is large enough to contain the
	// update bitmap.
	if (mColors == null \|\| mColors.length < pixel_num) {
	mColors = new int[pixel_num];
	}

	// Convert the blob bitmap into bitmap that we will display.
	if (format == ProtocolConstants.MT_FRAME_RGB565) {
	for (int n = 0; n < pixel_num; n++) {
	// Blob bitmap is in RGB565 format.
	final int color = bb.getShort();
	final int r = ((color & 0xf800) >> 8) \| ((color & 0xf800) >> 14);
	final int g = ((color & 0x7e0) >> 3) \| ((color & 0x7e0) >> 9);
	final int b = ((color & 0x1f) << 3) \| ((color & 0x1f) >> 2);
	mColors[n] = Color.rgb(r, g, b);
	}
	} else if (format == ProtocolConstants.MT_FRAME_RGB888) {
	for (int n = 0; n < pixel_num; n++) {
	// Blob bitmap is in RGB565 format.
	final int r = bb.getChar();
	final int g = bb.getChar();
	final int b = bb.getChar();
	mColors[n] = Color.rgb(r, g, b);
	}
	} else {
	Log.w(TAG, "Invalid framebuffer format: " + format);
	return;
	}
	mImageView.drawBitmap(x, y, w, h, mColors);
	}
	}

	/**
	* Updates application's screen accordingly to the emulator screen.
	*
	* @param e_width Width of the emulator screen.
	* @param e_height Height of the emulator screen.
	*/
	private void updateDisplay(int e_width, int e_height) {
	if (e_width != mEmulatorWidth \|\| e_height != mEmulatorHeight) {
	mEmulatorWidth = e_width;
	mEmulatorHeight = e_height;

	boolean rotateDisplay = false;
	int w = mImageView.getWidth();
	int h = mImageView.getHeight();
	if (w > h != e_width > e_height) {
	rotateDisplay = true;
	int tmp = w;
	w = h;
	h = tmp;
	}

	float dx = (float) w / (float) e_width;
	float dy = (float) h / (float) e_height;
	mImageView.setDxDy(dx, dy, rotateDisplay);
	if (DEBUG) Log.d(TAG, "Dispay updated: " + e_width + " x " + e_height +
	" -> " + w + " x " + h + " ratio: " +
	dx + " x " + dy);
	}
	}

	// ----------

	private void updateStatus(String status) {
	mTextStatus.setVisibility(status == null ? View.GONE : View.VISIBLE);
	if (status != null) mTextStatus.setText(status);
	}

	private void updateError() {
	ControllerBinder binder = getServiceBinder();
	String error = binder == null ? "" : binder.getServiceError();
	if (error == null) {
	error = "";
	}

	mTextError.setVisibility(error.length() == 0 ? View.GONE : View.VISIBLE);
	mTextError.setText(error);
	}
	}