remoting/android/java/src/org/chromium/chromoting/Desktop.java - platform/external/chromium_org - Git at Google

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 package org.chromium.chromoting;

 import android.annotation.SuppressLint;
 import android.content.res.Configuration;
 import android.os.Build;
 import android.os.Bundle;
 import android.support.v7.app.ActionBarActivity;
 import android.view.KeyCharacterMap;
 import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.ImageButton;

 import org.chromium.chromoting.jni.JniInterface;

 import java.util.Set;
 import java.util.TreeSet;

 /**
  * A simple screen that does nothing except display a DesktopView and notify it of rotations.
  */
 public class Desktop extends ActionBarActivity implements View.OnSystemUiVisibilityChangeListener {
     /** Web page to be displayed in the Help screen when launched from this activity. */
     private static final String HELP_URL =
             "http://support.google.com/chrome/?p=mobile_crd_connecthost";

     /** The surface that displays the remote host's desktop feed. */
     private DesktopView mRemoteHostDesktop;

     /** The button used to show the action bar. */
     private ImageButton mOverlayButton;

     /** Set of pressed keys for which we've sent TextEvent. */
     private Set<Integer> mPressedTextKeys = new TreeSet<Integer>();

     private ActivityLifecycleListener mActivityLifecycleListener;


     /** Called when the activity is first created. */
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.desktop);
         mRemoteHostDesktop = (DesktopView) findViewById(R.id.desktop_view);
         mOverlayButton = (ImageButton) findViewById(R.id.desktop_overlay_button);
         mRemoteHostDesktop.setDesktop(this);

         // Ensure the button is initially hidden.
         showActionBar();

         View decorView = getWindow().getDecorView();
         decorView.setOnSystemUiVisibilityChangeListener(this);

         mActivityLifecycleListener = CapabilityManager.getInstance()
             .onActivityAcceptingListener(this, Capabilities.CAST_CAPABILITY);
         mActivityLifecycleListener.onActivityCreated(this, savedInstanceState);
     }

     @Override
     protected void onStart() {
         super.onStart();
         mActivityLifecycleListener.onActivityStarted(this);
     }

     @Override
     protected void onPause() {
       if (isFinishing()) {
         mActivityLifecycleListener.onActivityPaused(this);
       }
       super.onPause();
     }

     @Override
     public void onResume() {
         super.onResume();
         mActivityLifecycleListener.onActivityResumed(this);
     }

     @Override
     protected void onStop() {
         mActivityLifecycleListener.onActivityStopped(this);
         super.onStop();
     }

     /** Called when the activity is finally finished. */
     @Override
     public void onDestroy() {
         super.onDestroy();
         JniInterface.disconnectFromHost();
     }

     /** Called when the display is rotated (as registered in the manifest). */
     @Override
     public void onConfigurationChanged(Configuration newConfig) {
         super.onConfigurationChanged(newConfig);
         mRemoteHostDesktop.onScreenConfigurationChanged();
     }

     /** Called to initialize the action bar. */
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         getMenuInflater().inflate(R.menu.desktop_actionbar, menu);

         mActivityLifecycleListener.onActivityCreatedOptionsMenu(this, menu);

         return super.onCreateOptionsMenu(menu);
     }

     /** Called whenever the visibility of the system status bar or navigation bar changes. */
     @Override
     public void onSystemUiVisibilityChange(int visibility) {
         // Ensure the action-bar's visibility matches that of the system controls. This
         // minimizes the number of states the UI can be in, to keep things simple for the user.

         // Determine if the system is in fullscreen/lights-out mode. LOW_PROFILE is needed since
         // it's the only flag supported in 4.0. But it is not sufficient in itself; when
         // IMMERSIVE_STICKY mode is used, the system clears this flag (leaving the FULLSCREEN flag
         // set) when the user swipes the edge to reveal the bars temporarily. When this happens,
         // the action-bar should remain hidden.
         int fullscreenFlags = getSystemUiFlags();
         if ((visibility & fullscreenFlags) != 0) {
             hideActionBar();
         } else {
             showActionBar();
         }
     }

     @SuppressLint("InlinedApi")
     private int getSystemUiFlags() {
         int flags = View.SYSTEM_UI_FLAG_LOW_PROFILE;
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
             flags |= View.SYSTEM_UI_FLAG_FULLSCREEN;
         }
         return flags;
     }

     public void showActionBar() {
         mOverlayButton.setVisibility(View.INVISIBLE);
         getSupportActionBar().show();

         View decorView = getWindow().getDecorView();
         decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
     }

     @SuppressLint("InlinedApi")
     public void hideActionBar() {
         mOverlayButton.setVisibility(View.VISIBLE);
         getSupportActionBar().hide();

         View decorView = getWindow().getDecorView();

         // LOW_PROFILE gives the status and navigation bars a "lights-out" appearance.
         // FULLSCREEN hides the status bar on supported devices (4.1 and above).
         int flags = getSystemUiFlags();

         // HIDE_NAVIGATION hides the navigation bar. However, if the user touches the screen, the
         // event is not seen by the application and instead the navigation bar is re-shown.
         // IMMERSIVE(_STICKY) fixes this problem and allows the user to interact with the app while
         // keeping the navigation controls hidden. This flag was introduced in 4.4, later than
         // HIDE_NAVIGATION, and so a runtime check is needed before setting either of these flags.
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
             flags |= (View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
         }

         decorView.setSystemUiVisibility(flags);
     }

     /** The overlay button's onClick handler. */
     public void onOverlayButtonPressed(View view) {
         showActionBar();
     }

     /** Called whenever an action bar button is pressed. */
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         int id = item.getItemId();

         mActivityLifecycleListener.onActivityOptionsItemSelected(this, item);

         if (id == R.id.actionbar_keyboard) {
             ((InputMethodManager) getSystemService(INPUT_METHOD_SERVICE)).toggleSoftInput(0, 0);
             return true;
         }
         if (id == R.id.actionbar_hide) {
             hideActionBar();
             return true;
         }
         if (id == R.id.actionbar_disconnect) {
             JniInterface.disconnectFromHost();
             return true;
         }
         if (id == R.id.actionbar_send_ctrl_alt_del) {
             int[] keys = {
                 KeyEvent.KEYCODE_CTRL_LEFT,
                 KeyEvent.KEYCODE_ALT_LEFT,
                 KeyEvent.KEYCODE_FORWARD_DEL,
             };
             for (int key : keys) {
                 JniInterface.sendKeyEvent(key, true);
             }
             for (int key : keys) {
                 JniInterface.sendKeyEvent(key, false);
             }
             return true;
         }
         if (id == R.id.actionbar_help) {
             HelpActivity.launch(this, HELP_URL);
             return true;
         }
         return super.onOptionsItemSelected(item);
     }

     /**
      * Called once when a keyboard key is pressed, then again when that same key is released. This
      * is not guaranteed to be notified of all soft keyboard events: certian keyboards might not
      * call it at all, while others might skip it in certain situations (e.g. swipe input).
      */
     @Override
     public boolean dispatchKeyEvent(KeyEvent event) {
         int keyCode = event.getKeyCode();

         // Dispatch the back button to the system to handle navigation
         if (keyCode == KeyEvent.KEYCODE_BACK) {
             return super.dispatchKeyEvent(event);
         }

         // Send TextEvent in two cases:
         //   1. This is an ACTION_MULTIPLE event.
         //   2. The event was generated by on-screen keyboard and Ctrl, Alt and
         //      Meta are not pressed.
         // This ensures that on-screen keyboard always injects input that
         // correspond to what user sees on the screen, while physical keyboard
         // acts as if it is connected to the remote host.
         if (event.getAction() == KeyEvent.ACTION_MULTIPLE) {
             JniInterface.sendTextEvent(event.getCharacters());
             return true;
         }

         boolean pressed = event.getAction() == KeyEvent.ACTION_DOWN;

         // For Enter getUnicodeChar() returns 10 (line feed), but we still
         // want to send it as KeyEvent.
         int unicode = keyCode != KeyEvent.KEYCODE_ENTER ? event.getUnicodeChar() : 0;

         boolean no_modifiers = !event.isAltPressed() &&
                                !event.isCtrlPressed() && !event.isMetaPressed();

         if (event.getDeviceId() == KeyCharacterMap.VIRTUAL_KEYBOARD &&
             pressed && unicode != 0 && no_modifiers) {
             mPressedTextKeys.add(keyCode);
             int[] codePoints = { unicode };
             JniInterface.sendTextEvent(new String(codePoints, 0, 1));
             return true;
         }

         if (!pressed && mPressedTextKeys.contains(keyCode)) {
             mPressedTextKeys.remove(keyCode);
             return true;
         }

         switch (keyCode) {
             case KeyEvent.KEYCODE_AT:
                 JniInterface.sendKeyEvent(KeyEvent.KEYCODE_SHIFT_LEFT, pressed);
                 JniInterface.sendKeyEvent(KeyEvent.KEYCODE_2, pressed);
                 return true;

             case KeyEvent.KEYCODE_POUND:
                 JniInterface.sendKeyEvent(KeyEvent.KEYCODE_SHIFT_LEFT, pressed);
                 JniInterface.sendKeyEvent(KeyEvent.KEYCODE_3, pressed);
                 return true;

             case KeyEvent.KEYCODE_STAR:
                 JniInterface.sendKeyEvent(KeyEvent.KEYCODE_SHIFT_LEFT, pressed);
                 JniInterface.sendKeyEvent(KeyEvent.KEYCODE_8, pressed);
                 return true;

             case KeyEvent.KEYCODE_PLUS:
                 JniInterface.sendKeyEvent(KeyEvent.KEYCODE_SHIFT_LEFT, pressed);
                 JniInterface.sendKeyEvent(KeyEvent.KEYCODE_EQUALS, pressed);
                 return true;

             default:
                 // We try to send all other key codes to the host directly.
                 return JniInterface.sendKeyEvent(keyCode, pressed);
         }
     }
 }
	// Copyright 2013 The Chromium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	package org.chromium.chromoting;

	import android.annotation.SuppressLint;
	import android.content.res.Configuration;
	import android.os.Build;
	import android.os.Bundle;
	import android.support.v7.app.ActionBarActivity;
	import android.view.KeyCharacterMap;
	import android.view.KeyEvent;
	import android.view.Menu;
	import android.view.MenuItem;
	import android.view.View;
	import android.view.inputmethod.InputMethodManager;
	import android.widget.ImageButton;

	import org.chromium.chromoting.jni.JniInterface;

	import java.util.Set;
	import java.util.TreeSet;

	/**
	* A simple screen that does nothing except display a DesktopView and notify it of rotations.
	*/
	public class Desktop extends ActionBarActivity implements View.OnSystemUiVisibilityChangeListener {
	/** Web page to be displayed in the Help screen when launched from this activity. */
	private static final String HELP_URL =
	"http://support.google.com/chrome/?p=mobile_crd_connecthost";

	/** The surface that displays the remote host's desktop feed. */
	private DesktopView mRemoteHostDesktop;

	/** The button used to show the action bar. */
	private ImageButton mOverlayButton;

	/** Set of pressed keys for which we've sent TextEvent. */
	private Set<Integer> mPressedTextKeys = new TreeSet<Integer>();

	private ActivityLifecycleListener mActivityLifecycleListener;


	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.desktop);
	mRemoteHostDesktop = (DesktopView) findViewById(R.id.desktop_view);
	mOverlayButton = (ImageButton) findViewById(R.id.desktop_overlay_button);
	mRemoteHostDesktop.setDesktop(this);

	// Ensure the button is initially hidden.
	showActionBar();

	View decorView = getWindow().getDecorView();
	decorView.setOnSystemUiVisibilityChangeListener(this);

	mActivityLifecycleListener = CapabilityManager.getInstance()
	.onActivityAcceptingListener(this, Capabilities.CAST_CAPABILITY);
	mActivityLifecycleListener.onActivityCreated(this, savedInstanceState);
	}

	@Override
	protected void onStart() {
	super.onStart();
	mActivityLifecycleListener.onActivityStarted(this);
	}

	@Override
	protected void onPause() {
	if (isFinishing()) {
	mActivityLifecycleListener.onActivityPaused(this);
	}
	super.onPause();
	}

	@Override
	public void onResume() {
	super.onResume();
	mActivityLifecycleListener.onActivityResumed(this);
	}

	@Override
	protected void onStop() {
	mActivityLifecycleListener.onActivityStopped(this);
	super.onStop();
	}

	/** Called when the activity is finally finished. */
	@Override
	public void onDestroy() {
	super.onDestroy();
	JniInterface.disconnectFromHost();
	}

	/** Called when the display is rotated (as registered in the manifest). */
	@Override
	public void onConfigurationChanged(Configuration newConfig) {
	super.onConfigurationChanged(newConfig);
	mRemoteHostDesktop.onScreenConfigurationChanged();
	}

	/** Called to initialize the action bar. */
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
	getMenuInflater().inflate(R.menu.desktop_actionbar, menu);

	mActivityLifecycleListener.onActivityCreatedOptionsMenu(this, menu);

	return super.onCreateOptionsMenu(menu);
	}

	/** Called whenever the visibility of the system status bar or navigation bar changes. */
	@Override
	public void onSystemUiVisibilityChange(int visibility) {
	// Ensure the action-bar's visibility matches that of the system controls. This
	// minimizes the number of states the UI can be in, to keep things simple for the user.

	// Determine if the system is in fullscreen/lights-out mode. LOW_PROFILE is needed since
	// it's the only flag supported in 4.0. But it is not sufficient in itself; when
	// IMMERSIVE_STICKY mode is used, the system clears this flag (leaving the FULLSCREEN flag
	// set) when the user swipes the edge to reveal the bars temporarily. When this happens,
	// the action-bar should remain hidden.
	int fullscreenFlags = getSystemUiFlags();
	if ((visibility & fullscreenFlags) != 0) {
	hideActionBar();
	} else {
	showActionBar();
	}
	}

	@SuppressLint("InlinedApi")
	private int getSystemUiFlags() {
	int flags = View.SYSTEM_UI_FLAG_LOW_PROFILE;
	if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
	flags \|= View.SYSTEM_UI_FLAG_FULLSCREEN;
	}
	return flags;
	}

	public void showActionBar() {
	mOverlayButton.setVisibility(View.INVISIBLE);
	getSupportActionBar().show();

	View decorView = getWindow().getDecorView();
	decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
	}

	@SuppressLint("InlinedApi")
	public void hideActionBar() {
	mOverlayButton.setVisibility(View.VISIBLE);
	getSupportActionBar().hide();

	View decorView = getWindow().getDecorView();

	// LOW_PROFILE gives the status and navigation bars a "lights-out" appearance.
	// FULLSCREEN hides the status bar on supported devices (4.1 and above).
	int flags = getSystemUiFlags();

	// HIDE_NAVIGATION hides the navigation bar. However, if the user touches the screen, the
	// event is not seen by the application and instead the navigation bar is re-shown.
	// IMMERSIVE(_STICKY) fixes this problem and allows the user to interact with the app while
	// keeping the navigation controls hidden. This flag was introduced in 4.4, later than
	// HIDE_NAVIGATION, and so a runtime check is needed before setting either of these flags.
	if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
	flags \|= (View.SYSTEM_UI_FLAG_HIDE_NAVIGATION \| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
	}

	decorView.setSystemUiVisibility(flags);
	}

	/** The overlay button's onClick handler. */
	public void onOverlayButtonPressed(View view) {
	showActionBar();
	}

	/** Called whenever an action bar button is pressed. */
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
	int id = item.getItemId();

	mActivityLifecycleListener.onActivityOptionsItemSelected(this, item);

	if (id == R.id.actionbar_keyboard) {
	((InputMethodManager) getSystemService(INPUT_METHOD_SERVICE)).toggleSoftInput(0, 0);
	return true;
	}
	if (id == R.id.actionbar_hide) {
	hideActionBar();
	return true;
	}
	if (id == R.id.actionbar_disconnect) {
	JniInterface.disconnectFromHost();
	return true;
	}
	if (id == R.id.actionbar_send_ctrl_alt_del) {
	int[] keys = {
	KeyEvent.KEYCODE_CTRL_LEFT,
	KeyEvent.KEYCODE_ALT_LEFT,
	KeyEvent.KEYCODE_FORWARD_DEL,
	};
	for (int key : keys) {
	JniInterface.sendKeyEvent(key, true);
	}
	for (int key : keys) {
	JniInterface.sendKeyEvent(key, false);
	}
	return true;
	}
	if (id == R.id.actionbar_help) {
	HelpActivity.launch(this, HELP_URL);
	return true;
	}
	return super.onOptionsItemSelected(item);
	}

	/**
	* Called once when a keyboard key is pressed, then again when that same key is released. This
	* is not guaranteed to be notified of all soft keyboard events: certian keyboards might not
	* call it at all, while others might skip it in certain situations (e.g. swipe input).
	*/
	@Override
	public boolean dispatchKeyEvent(KeyEvent event) {
	int keyCode = event.getKeyCode();

	// Dispatch the back button to the system to handle navigation
	if (keyCode == KeyEvent.KEYCODE_BACK) {
	return super.dispatchKeyEvent(event);
	}

	// Send TextEvent in two cases:
	// 1. This is an ACTION_MULTIPLE event.
	// 2. The event was generated by on-screen keyboard and Ctrl, Alt and
	// Meta are not pressed.
	// This ensures that on-screen keyboard always injects input that
	// correspond to what user sees on the screen, while physical keyboard
	// acts as if it is connected to the remote host.
	if (event.getAction() == KeyEvent.ACTION_MULTIPLE) {
	JniInterface.sendTextEvent(event.getCharacters());
	return true;
	}

	boolean pressed = event.getAction() == KeyEvent.ACTION_DOWN;

	// For Enter getUnicodeChar() returns 10 (line feed), but we still
	// want to send it as KeyEvent.
	int unicode = keyCode != KeyEvent.KEYCODE_ENTER ? event.getUnicodeChar() : 0;

	boolean no_modifiers = !event.isAltPressed() &&
	!event.isCtrlPressed() && !event.isMetaPressed();

	if (event.getDeviceId() == KeyCharacterMap.VIRTUAL_KEYBOARD &&
	pressed && unicode != 0 && no_modifiers) {
	mPressedTextKeys.add(keyCode);
	int[] codePoints = { unicode };
	JniInterface.sendTextEvent(new String(codePoints, 0, 1));
	return true;
	}

	if (!pressed && mPressedTextKeys.contains(keyCode)) {
	mPressedTextKeys.remove(keyCode);
	return true;
	}

	switch (keyCode) {
	case KeyEvent.KEYCODE_AT:
	JniInterface.sendKeyEvent(KeyEvent.KEYCODE_SHIFT_LEFT, pressed);
	JniInterface.sendKeyEvent(KeyEvent.KEYCODE_2, pressed);
	return true;

	case KeyEvent.KEYCODE_POUND:
	JniInterface.sendKeyEvent(KeyEvent.KEYCODE_SHIFT_LEFT, pressed);
	JniInterface.sendKeyEvent(KeyEvent.KEYCODE_3, pressed);
	return true;

	case KeyEvent.KEYCODE_STAR:
	JniInterface.sendKeyEvent(KeyEvent.KEYCODE_SHIFT_LEFT, pressed);
	JniInterface.sendKeyEvent(KeyEvent.KEYCODE_8, pressed);
	return true;

	case KeyEvent.KEYCODE_PLUS:
	JniInterface.sendKeyEvent(KeyEvent.KEYCODE_SHIFT_LEFT, pressed);
	JniInterface.sendKeyEvent(KeyEvent.KEYCODE_EQUALS, pressed);
	return true;

	default:
	// We try to send all other key codes to the host directly.
	return JniInterface.sendKeyEvent(keyCode, pressed);
	}
	}
	}