From 2987e03a8608b2a3af3c67a5c0c44307fe0007e9 Mon Sep 17 00:00:00 2001
From: albexk <albexk@proton.me>
Date: Sun, 24 Nov 2024 21:18:35 +0300
Subject: [PATCH] fix: add the touch emulation method for Android TV

---
 .../src/org/amnezia/vpn/AmneziaActivity.kt    | 48 +++++++++++++++++++
 .../platforms/android/android_controller.cpp  |  5 ++
 client/platforms/android/android_controller.h |  1 +
 client/ui/controllers/systemController.cpp    |  7 +++
 client/ui/controllers/systemController.h      |  2 +
 5 files changed, 63 insertions(+)

diff --git a/client/android/src/org/amnezia/vpn/AmneziaActivity.kt b/client/android/src/org/amnezia/vpn/AmneziaActivity.kt
index b43a22c5..8d873859 100644
--- a/client/android/src/org/amnezia/vpn/AmneziaActivity.kt
+++ b/client/android/src/org/amnezia/vpn/AmneziaActivity.kt
@@ -23,9 +23,12 @@ import android.os.Looper
 import android.os.Message
 import android.os.Messenger
 import android.os.ParcelFileDescriptor
+import android.os.SystemClock
 import android.provider.OpenableColumns
 import android.provider.Settings
 import android.view.MotionEvent
+import android.view.View
+import android.view.ViewGroup
 import android.view.WindowManager.LayoutParams
 import android.webkit.MimeTypeMap
 import android.widget.Toast
@@ -800,6 +803,50 @@ class AmneziaActivity : QtActivity() {
         }
     }
 
+    // method to workaround Qt's problem with calling the keyboard on TVs
+    @Suppress("unused")
+    fun sendTouch(x: Float, y: Float) {
+        Log.v(TAG, "Send touch: $x, $y")
+        blockingCall {
+            findQtWindow(window.decorView)?.let {
+                Log.v(TAG, "Send touch to $it")
+                it.dispatchTouchEvent(createEvent(x, y, SystemClock.uptimeMillis(), MotionEvent.ACTION_DOWN))
+                it.dispatchTouchEvent(createEvent(x, y, SystemClock.uptimeMillis(), MotionEvent.ACTION_UP))
+            }
+        }
+    }
+
+    private fun findQtWindow(view: View): View? {
+        Log.v(TAG, "findQtWindow: process $view")
+        if (view::class.simpleName == "QtWindow") return view
+        else if (view is ViewGroup) {
+            for (i in 0 until view.childCount) {
+                val result = findQtWindow(view.getChildAt(i))
+                if (result != null) return result
+            }
+            return null
+        } else return null
+    }
+
+    private fun createEvent(x: Float, y: Float, eventTime: Long, action: Int): MotionEvent =
+        MotionEvent.obtain(
+            eventTime,
+            eventTime,
+            action,
+            1,
+            arrayOf(MotionEvent.PointerProperties().apply {
+                id = 0
+                toolType = MotionEvent.TOOL_TYPE_FINGER
+            }),
+            arrayOf(MotionEvent.PointerCoords().apply {
+                this.x = x
+                this.y = y
+                pressure = 1f
+                size = 1f
+            }),
+            0, 0, 1.0f, 1.0f, 0, 0, 0,0
+        )
+
     // workaround for a bug in Qt that causes the mouse click event not to be handled
     // also disable right-click, as it causes the application to crash
     private var lastButtonState = 0
@@ -849,6 +896,7 @@ class AmneziaActivity : QtActivity() {
     }
 
     override fun dispatchTouchEvent(ev: MotionEvent?): Boolean {
+        Log.v(TAG, "dispatchTouch: $ev")
         if (ev != null && ev.getToolType(0) == MotionEvent.TOOL_TYPE_MOUSE) {
             return handleMouseEvent(ev) { super.dispatchTouchEvent(it) }
         }
diff --git a/client/platforms/android/android_controller.cpp b/client/platforms/android/android_controller.cpp
index 6ea8bea5..d9195f87 100644
--- a/client/platforms/android/android_controller.cpp
+++ b/client/platforms/android/android_controller.cpp
@@ -304,6 +304,11 @@ bool AndroidController::requestAuthentication()
     return result;
 }
 
+void AndroidController::sendTouch(float x, float y)
+{
+    callActivityMethod("sendTouch", "(FF)V", x, y);
+}
+
 // Moving log processing to the Android side
 jclass AndroidController::log;
 jmethodID AndroidController::logDebug;
diff --git a/client/platforms/android/android_controller.h b/client/platforms/android/android_controller.h
index c2e082ea..5707771e 100644
--- a/client/platforms/android/android_controller.h
+++ b/client/platforms/android/android_controller.h
@@ -51,6 +51,7 @@ public:
     bool isNotificationPermissionGranted();
     void requestNotificationPermission();
     bool requestAuthentication();
+    void sendTouch(float x, float y);
 
     static bool initLogging();
     static void messageHandler(QtMsgType type, const QMessageLogContext &context, const QString &message);
diff --git a/client/ui/controllers/systemController.cpp b/client/ui/controllers/systemController.cpp
index 6de66769..3463d5f9 100644
--- a/client/ui/controllers/systemController.cpp
+++ b/client/ui/controllers/systemController.cpp
@@ -159,3 +159,10 @@ bool SystemController::isAuthenticated()
     return true;
 #endif
 }
+
+void SystemController::sendTouch(float x, float y)
+{
+#ifdef Q_OS_ANDROID
+    AndroidController::instance()->sendTouch(x, y);
+#endif
+}
diff --git a/client/ui/controllers/systemController.h b/client/ui/controllers/systemController.h
index ddc3476a..f80d2fdb 100644
--- a/client/ui/controllers/systemController.h
+++ b/client/ui/controllers/systemController.h
@@ -22,6 +22,8 @@ public slots:
     void setQmlRoot(QObject *qmlRoot);
 
     bool isAuthenticated();
+    void sendTouch(float x, float y);
+
 signals:
     void fileDialogClosed(const bool isAccepted);