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 From 8ac206954f3f45c156e0d380507705c07fb65bc0 Mon Sep 17 00:00:00 2001
 From: Sharaf Zaman <sharafzaz121@gmail.com>
 Date: Mon, 19 Oct 2020 10:09:57 +0000
 Subject: [PATCH 25/46] Android: Move events handling to QtLayout
 
 Whenever a widget with Qt::Window flag is used a new
 QtSurface is created and this is used by Android to
 send us events. However, as soon as this Surface is
 destroyed, the events stop coming until the user
 starts the new event by touching the new Surface.
 This causes interruptions and leaves events in an
 undefined state in apps where events are supposed to
 come in continuous manner.
 
 By moving it to ViewGroup, we stop relying on Surfaces.
 
 [ChangeLog][Android] Move events handling to QtLayout
 ---
  .../org/qtproject/qt5/android/QtLayout.java   | 43 +++++++++++++++++++
  .../org/qtproject/qt5/android/QtSurface.java  | 31 -------------
  2 files changed, 43 insertions(+), 31 deletions(-)
 
 diff --git a/src/android/jar/src/org/qtproject/qt5/android/QtLayout.java b/src/android/jar/src/org/qtproject/qt5/android/QtLayout.java
 index f22b8176c8..6b067a9cfd 100644
 --- a/src/android/jar/src/org/qtproject/qt5/android/QtLayout.java
 +++ b/src/android/jar/src/org/qtproject/qt5/android/QtLayout.java
 @@ -46,24 +46,42 @@ import android.util.AttributeSet;
  import android.util.DisplayMetrics;
  import android.view.View;
  import android.view.ViewGroup;
 +import android.view.MotionEvent;
 +import android.view.GestureDetector;
  
  public class QtLayout extends ViewGroup
  {
 +    private GestureDetector m_gestureDetector;
      private Runnable m_startApplicationRunnable;
 +
      public QtLayout(Context context, Runnable startRunnable)
      {
          super(context);
          m_startApplicationRunnable = startRunnable;
 +        initializeGestureDetector(context);
      }
  
      public QtLayout(Context context, AttributeSet attrs)
      {
          super(context, attrs);
 +        initializeGestureDetector(context);
      }
  
      public QtLayout(Context context, AttributeSet attrs, int defStyle)
      {
          super(context, attrs, defStyle);
 +        initializeGestureDetector(context);
 +    }
 +
 +    private void initializeGestureDetector(Context context)
 +    {
 +        m_gestureDetector =
 +            new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
 +                public void onLongPress(MotionEvent event) {
 +                    QtNative.longPress(getId(), (int) event.getX(), (int) event.getY());
 +                }
 +            });
 +        m_gestureDetector.setIsLongpressEnabled(true);
      }
  
      @Override
 @@ -252,4 +270,29 @@ public class QtLayout extends ViewGroup
              addView(childView, params);
          }
      }
 +
 +    @Override
 +    public boolean onInterceptTouchEvent(MotionEvent ev) {
 +        return true;
 +    }
 +
 +    @Override
 +    public boolean onTouchEvent(MotionEvent event) {
 +        QtNative.sendTouchEvent(event, getId());
 +        m_gestureDetector.onTouchEvent(event);
 +        return true;
 +    }
 +
 +    @Override
 +    public boolean onTrackballEvent(MotionEvent event)
 +    {
 +        QtNative.sendTrackballEvent(event, getId());
 +        return true;
 +    }
 +
 +    @Override
 +    public boolean onGenericMotionEvent(MotionEvent event)
 +    {
 +        return QtNative.sendGenericMotionEvent(event, getId());
 +    }
  }
 diff --git a/src/android/jar/src/org/qtproject/qt5/android/QtSurface.java b/src/android/jar/src/org/qtproject/qt5/android/QtSurface.java
 index 08b5a80f7e..723a783c6b 100644
 --- a/src/android/jar/src/org/qtproject/qt5/android/QtSurface.java
 +++ b/src/android/jar/src/org/qtproject/qt5/android/QtSurface.java
 @@ -43,8 +43,6 @@ package org.qtproject.qt5.android;
  import android.app.Activity;
  import android.content.Context;
  import android.graphics.PixelFormat;
 -import android.view.GestureDetector;
 -import android.view.MotionEvent;
  import android.view.SurfaceHolder;
  import android.view.SurfaceView;
  
 @@ -53,7 +51,6 @@ import java.lang.reflect.Method;
  
  public class QtSurface extends SurfaceView implements SurfaceHolder.Callback
  {
 -    private GestureDetector m_gestureDetector;
      private Object m_accessibilityDelegate = null;
  
      public QtSurface(Context context, int id, boolean onTop, int imageDepth)
 @@ -69,13 +66,6 @@ public class QtSurface extends SurfaceView implements SurfaceHolder.Callback
              getHolder().setFormat(PixelFormat.RGBA_8888);
  
          setId(id);
 -        m_gestureDetector =
 -            new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
 -                public void onLongPress(MotionEvent event) {
 -                    QtNative.longPress(getId(), (int) event.getX(), (int) event.getY());
 -                }
 -            });
 -        m_gestureDetector.setIsLongpressEnabled(true);
      }
  
      @Override
 @@ -97,25 +87,4 @@ public class QtSurface extends SurfaceView implements SurfaceHolder.Callback
      {
          QtNative.setSurface(getId(), null, 0, 0);
      }
 -
 -    @Override
 -    public boolean onTouchEvent(MotionEvent event)
 -    {
 -        QtNative.sendTouchEvent(event, getId());
 -        m_gestureDetector.onTouchEvent(event);
 -        return true;
 -    }
 -
 -    @Override
 -    public boolean onTrackballEvent(MotionEvent event)
 -    {
 -        QtNative.sendTrackballEvent(event, getId());
 -        return true;
 -    }
 -
 -    @Override
 -    public boolean onGenericMotionEvent(MotionEvent event)
 -    {
 -        return QtNative.sendGenericMotionEvent(event, getId());
 -    }
  }
 -- 
 2.33.0