Add gestures to bring up the software keyboard - Long press start or tap with 3 fingers

app/src/main/java/com/limelight/Game.java

@@ -16,6 +16,7 @@ import com.limelight.nvstream.av.video.VideoDecoderRenderer;
 import com.limelight.nvstream.input.KeyboardPacket;
 import com.limelight.nvstream.input.MouseButtonPacket;
 import com.limelight.preferences.PreferenceConfiguration;
+import com.limelight.ui.GameGestures;
 import com.limelight.utils.Dialog;
 import com.limelight.utils.SpinnerDialog;
 
@@ -30,6 +31,7 @@ import android.net.ConnectivityManager;
 import android.net.wifi.WifiManager;
 import android.os.Bundle;
 import android.os.Handler;
+import android.os.SystemClock;
 import android.preference.PreferenceManager;
 import android.view.Display;
 import android.view.InputDevice;
@@ -44,6 +46,7 @@ import android.view.View.OnTouchListener;
 import android.view.ViewGroup;
 import android.view.Window;
 import android.view.WindowManager;
+import android.view.inputmethod.InputMethodManager;
 import android.widget.Toast;
 
 import java.util.Locale;
@@ -51,7 +54,7 @@ import java.util.Locale;
 
 public class Game extends Activity implements SurfaceHolder.Callback,
 	OnGenericMotionListener, OnTouchListener, NvConnectionListener, EvdevListener,
-	OnSystemUiVisibilityChangeListener
+	OnSystemUiVisibilityChangeListener, GameGestures
 {
 	private int lastMouseX = Integer.MIN_VALUE;
 	private int lastMouseY = Integer.MIN_VALUE;
@@ -59,6 +62,9 @@ public class Game extends Activity implements SurfaceHolder.Callback,
 	
 	// Only 2 touches are supported
 	private TouchContext[] touchContextMap = new TouchContext[2];
+    private long threeFingerDownTime = 0;
+
+    private static final int THREE_FINGER_TAP_THRESHOLD = 300;
 	
 	private ControllerHandler controllerHandler;
 	private KeyboardTranslator keybTranslator;
@@ -189,7 +195,7 @@ public class Game extends Activity implements SurfaceHolder.Callback,
 		// Initialize the connection
 		conn = new NvConnection(host, uniqueId, Game.this, config, PlatformBinding.getCryptoProvider(this));
 		keybTranslator = new KeyboardTranslator(conn);
-		controllerHandler = new ControllerHandler(conn, prefConfig.deadzonePercentage);
+		controllerHandler = new ControllerHandler(conn, this, prefConfig.deadzonePercentage);
 		
 		SurfaceHolder sh = sv.getHolder();
 		if (prefConfig.stretchVideo || !decoderRenderer.isHardwareAccelerated()) {
@@ -480,6 +486,13 @@ public class Game extends Activity implements SurfaceHolder.Callback,
 		}
 	}
 
+    @Override
+    public void showKeyboard() {
+        LimeLog.info("Showing keyboard overlay");
+        InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
+        inputManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY);
+    }
+
 	// Returns true if the event was consumed
 	private boolean handleMotionEvent(MotionEvent event) {
 		// Pass through keyboard input if we're not grabbing
@@ -503,6 +516,21 @@ public class Game extends Activity implements SurfaceHolder.Callback,
 				int eventX = (int)event.getX(actionIndex);
                 int eventY = (int)event.getY(actionIndex);
 
+                // Special handling for 3 finger gesture
+                if (event.getActionMasked() == MotionEvent.ACTION_POINTER_DOWN &&
+                        event.getPointerCount() == 3) {
+                    // Three fingers down
+                    threeFingerDownTime = SystemClock.uptimeMillis();
+
+                    // Cancel the first and second touches to avoid
+                    // erroneous events
+                    for (TouchContext aTouchContext : touchContextMap) {
+                        aTouchContext.cancelTouch();
+                    }
+
+                    return true;
+                }
+
 				TouchContext context = getTouchContext(actionIndex);
 				if (context == null) {
 					return false;
@@ -516,8 +544,16 @@ public class Game extends Activity implements SurfaceHolder.Callback,
 					break;
 				case MotionEvent.ACTION_POINTER_UP:
 				case MotionEvent.ACTION_UP:
+                    if (event.getPointerCount() == 1) {
+                        // All fingers up
+                        if (SystemClock.uptimeMillis() - threeFingerDownTime < THREE_FINGER_TAP_THRESHOLD) {
+                            // This is a 3 finger tap to bring up the keyboard
+                            showKeyboard();
+                            return true;
+                        }
+                    }
 					context.touchUpEvent(eventX, eventY);
-					if (actionIndex == 0 && event.getPointerCount() > 1) {
+					if (actionIndex == 0 && event.getPointerCount() > 1 && !context.isCancelled()) {
 						// The original secondary touch now becomes primary
 						context.touchDownEvent((int)event.getX(1), (int)event.getY(1));
 					}

app/src/main/java/com/limelight/binding/input/ControllerHandler.java

@@ -10,6 +10,7 @@ import android.view.MotionEvent;
 import com.limelight.LimeLog;
 import com.limelight.nvstream.NvConnection;
 import com.limelight.nvstream.input.ControllerPacket;
+import com.limelight.ui.GameGestures;
 import com.limelight.utils.Vector2d;
 
 public class ControllerHandler {
@@ -31,6 +32,9 @@ public class ControllerHandler {
 	private long lastRbUpTime = 0;
 	private static final int MAXIMUM_BUMPER_UP_DELAY_MS = 100;
 
+    private long startDownTime = 0;
+    private static final int START_DOWN_TIME_KEYB_MS = 750;
+	
 	private static final int MINIMUM_BUTTON_DOWN_TIME_MS = 25;
 	
 	private static final int EMULATING_SPECIAL = 0x1;
@@ -46,10 +50,12 @@ public class ControllerHandler {
 	private NvConnection conn;
     private double stickDeadzone;
     private final ControllerMapping defaultMapping = new ControllerMapping();
+    private GameGestures gestures;
     private boolean hasGameController;
 	
-	public ControllerHandler(NvConnection conn, int deadzonePercentage) {
+	public ControllerHandler(NvConnection conn, GameGestures gestures, int deadzonePercentage) {
 		this.conn = conn;
+        this.gestures = gestures;
 
         // HACK: For now we're hardcoding a 10% deadzone. Some deadzone
         // is required for controller batching support to work.
@@ -513,6 +519,9 @@ public class ControllerHandler {
 			break;
 		case KeyEvent.KEYCODE_BUTTON_START:
 		case KeyEvent.KEYCODE_MENU:
+            if (SystemClock.uptimeMillis() - startDownTime > ControllerHandler.START_DOWN_TIME_KEYB_MS) {
+                gestures.showKeyboard();
+            }
 			inputMap &= ~ControllerPacket.PLAY_FLAG;
 			break;
 		case KeyEvent.KEYCODE_BACK:
@@ -621,6 +630,9 @@ public class ControllerHandler {
 			break;
 		case KeyEvent.KEYCODE_BUTTON_START:
 		case KeyEvent.KEYCODE_MENU:
+            if (event.getRepeatCount() == 0) {
+                startDownTime = SystemClock.uptimeMillis();
+            }
 			inputMap |= ControllerPacket.PLAY_FLAG;
 			break;
 		case KeyEvent.KEYCODE_BACK:

app/src/main/java/com/limelight/binding/input/TouchContext.java

@@ -9,6 +9,7 @@ public class TouchContext {
 	private int originalTouchX = 0;
 	private int originalTouchY = 0;
 	private long originalTouchTime = 0;
+    private boolean cancelled;
 	
 	private NvConnection conn;
 	private int actionIndex;
@@ -56,12 +57,17 @@ public class TouchContext {
 		originalTouchX = lastTouchX = eventX;
 		originalTouchY = lastTouchY = eventY;
 		originalTouchTime = System.currentTimeMillis();
+        cancelled = false;
 
         return true;
 	}
 	
 	public void touchUpEvent(int eventX, int eventY)
 	{
+        if (cancelled) {
+            return;
+        }
+
 		if (isTap())
 		{
 			byte buttonIndex = getMouseButtonIndex();
@@ -102,4 +108,12 @@ public class TouchContext {
 		
 		return true;
 	}
+
+    public void cancelTouch() {
+        cancelled = true;
+    }
+
+    public boolean isCancelled() {
+        return cancelled;
+    }
 }