From 3b750c78ab28b88ef1c2f07d15cd730073bf339b Mon Sep 17 00:00:00 2001
From: "Ahmed I. Khalil" <ahmedibrahimkhali@gmail.com>
Date: Tue, 1 Jul 2014 18:28:39 +0200
Subject: [PATCH] Added Triple and Double finger gestures. For right and middle
 clicking.

REVIEW: 119072
---
 .../MousePadPlugin/MousePadActivity.java      | 73 +++++++++++++------
 .../MousePadGestureDetector.java              | 59 +++++++++++++++
 2 files changed, 109 insertions(+), 23 deletions(-)
 create mode 100644 src/main/java/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadGestureDetector.java

diff --git a/src/main/java/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadActivity.java b/src/main/java/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadActivity.java
index 6cab94bd..31985083 100644
--- a/src/main/java/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadActivity.java
+++ b/src/main/java/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadActivity.java
@@ -12,8 +12,7 @@ import org.kde.kdeconnect.BackgroundService;
 import org.kde.kdeconnect.Device;
 import org.kde.kdeconnect_tp.R;
 
-public class MousePadActivity extends Activity implements GestureDetector.OnGestureListener, GestureDetector.OnDoubleTapListener {
-
+public class MousePadActivity extends Activity implements GestureDetector.OnGestureListener, GestureDetector.OnDoubleTapListener, MousePadGestureDetector.OnGestureListener {
     private final static float MinDistanceToSendScroll = 2.5f;
 
     private float mPrevX;
@@ -29,12 +28,15 @@ public class MousePadActivity extends Activity implements GestureDetector.OnGest
 
     private GestureDetector mDetector;
 
+    private MousePadGestureDetector mMousePadGestureDetector;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_mousepad);
         deviceId = getIntent().getStringExtra("deviceId");
         mDetector = new GestureDetector(this, this);
+        mMousePadGestureDetector = new MousePadGestureDetector(this, this);
         mDetector.setOnDoubleTapListener(this);
     }
 
@@ -49,33 +51,22 @@ public class MousePadActivity extends Activity implements GestureDetector.OnGest
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
             case R.id.menu_right_click:
-                BackgroundService.RunCommand(this, new BackgroundService.InstanceCallback() {
-                    @Override
-                    public void onServiceStart(BackgroundService service) {
-                        Device device = service.getDevice(deviceId);
-                        MousePadPlugin mousePadPlugin = (MousePadPlugin)device.getPlugin("plugin_mousepad");
-                        if (mousePadPlugin == null) return;
-                        mousePadPlugin.sendRightClick();
-                    }
-                });
-                break;
+                sendRightClick();
+                return true;
             case R.id.menu_middle_click:
-                BackgroundService.RunCommand(this, new BackgroundService.InstanceCallback() {
-                    @Override
-                    public void onServiceStart(BackgroundService service) {
-                        Device device = service.getDevice(deviceId);
-                        MousePadPlugin mousePadPlugin = (MousePadPlugin)device.getPlugin("plugin_mousepad");
-                        if (mousePadPlugin == null) return;
-                        mousePadPlugin.sendMiddleClick();
-                    }
-                });
-                break;
+                sendMiddleClick();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
         }
-        return true;
     }
 
     @Override
     public boolean onTouchEvent(MotionEvent event) {
+        if (mMousePadGestureDetector.onTouchEvent(event)) {
+            return true;
+        }
+
         if ( mDetector.onTouchEvent(event) ) {
             return true;
         }
@@ -201,4 +192,40 @@ public class MousePadActivity extends Activity implements GestureDetector.OnGest
     public boolean onDoubleTapEvent(MotionEvent e) {
         return false;
     }
+
+    @Override
+    public boolean onTripleFingerTap(MotionEvent ev) {
+        sendMiddleClick();
+        return true;
+    }
+
+    @Override
+    public boolean onDoubleFingerTap(MotionEvent ev) {
+        sendRightClick();
+        return true;
+    }
+
+    private void sendMiddleClick() {
+        BackgroundService.RunCommand(this, new BackgroundService.InstanceCallback() {
+            @Override
+            public void onServiceStart(BackgroundService service) {
+                Device device = service.getDevice(deviceId);
+                MousePadPlugin mousePadPlugin = (MousePadPlugin)device.getPlugin("plugin_mousepad");
+                if (mousePadPlugin == null) return;
+                mousePadPlugin.sendMiddleClick();
+            }
+        });
+    }
+
+    private void sendRightClick() {
+        BackgroundService.RunCommand(this, new BackgroundService.InstanceCallback() {
+            @Override
+            public void onServiceStart(BackgroundService service) {
+                Device device = service.getDevice(deviceId);
+                MousePadPlugin mousePadPlugin = (MousePadPlugin)device.getPlugin("plugin_mousepad");
+                if (mousePadPlugin == null) return;
+                mousePadPlugin.sendRightClick();
+            }
+        });
+    }
 }
diff --git a/src/main/java/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadGestureDetector.java b/src/main/java/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadGestureDetector.java
new file mode 100644
index 00000000..912e0862
--- /dev/null
+++ b/src/main/java/org/kde/kdeconnect/Plugins/MousePadPlugin/MousePadGestureDetector.java
@@ -0,0 +1,59 @@
+package org.kde.kdeconnect.Plugins.MousePadPlugin;
+
+import android.content.Context;
+import android.view.MotionEvent;
+import android.view.ViewConfiguration;
+
+
+public class MousePadGestureDetector {
+
+    private static final int TAP_TIMEOUT = ViewConfiguration.getTapTimeout() + 100;
+    private OnGestureListener mGestureListener;
+
+    private Context mCtx;
+
+    private long mFirstDownTime = 0;
+
+    private boolean mIsGestureHandled;
+
+    public interface OnGestureListener {
+
+        boolean onTripleFingerTap(MotionEvent ev);
+
+        boolean onDoubleFingerTap(MotionEvent ev);
+    }
+
+    public MousePadGestureDetector(Context ctx, OnGestureListener gestureListener) {
+        if (gestureListener == null) {
+            throw new IllegalArgumentException("gestureListener cannot be null");
+        }
+        mGestureListener = gestureListener;
+        mCtx = ctx;
+    }
+
+    public boolean onTouchEvent(MotionEvent event) {
+        int action = event.getAction();
+        switch (action & MotionEvent.ACTION_MASK) {
+            case MotionEvent.ACTION_DOWN:
+                mIsGestureHandled = false;
+                mFirstDownTime = event.getEventTime();
+                break;
+            case MotionEvent.ACTION_POINTER_UP:
+                int count = event.getPointerCount();
+                if (event.getEventTime() - mFirstDownTime <= TAP_TIMEOUT) {
+                    if (count == 3) {
+                        if (!mIsGestureHandled) {
+                            mIsGestureHandled = mGestureListener.onTripleFingerTap(event);
+                        }
+                    } else if (count == 2) {
+                        if (!mIsGestureHandled) {
+                            mIsGestureHandled = mGestureListener.onDoubleFingerTap(event);
+                        }
+                    }
+                }
+                mFirstDownTime = 0;
+                break;
+        }
+        return mIsGestureHandled;
+    }
+}