[ApplicationWindow] Fixup touch events for swipe back

src/controls/editfilter.cpp

@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2017 Eetu Kahelin
+ * Copyright (C) 2023 Chupligin Sergey <[email protected]>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -29,6 +30,10 @@ EditFilter::EditFilter(QObject* parent)
 
 bool EditFilter::eventFilter(QObject* obj, QEvent* event)
 {
+    if (event->type() == QEvent::TouchBegin || event->type() == QEvent::TouchEnd) {
+        emit touchEvent(event);
+    }
+
     if (event->type() == QEvent::MouseButtonPress || event->type() == QEvent::TouchBegin) {
         NemoFocusSingleton* nemoFocus = NemoFocusSingleton::instance();
         if (nemoFocus->edit() != NULL) {

src/controls/editfilter.h

@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2017 Eetu Kahelin
+ * Copyright (C) 2023 Chupligin Sergey <[email protected]>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -16,6 +17,7 @@
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
+
 #ifndef EDITFILTER_H
 #define EDITFILTER_H
 
@@ -27,6 +29,9 @@ class EditFilter : public QObject {
 public:
     explicit EditFilter(QObject* parent = 0);
 
+signals:
+    void touchEvent(QEvent* event);
+
 protected:
     bool eventFilter(QObject* obj, QEvent* event);
 };

src/controls/nemowindow.cpp

@@ -37,6 +37,7 @@ NemoWindow::NemoWindow(QWindow* parent)
 
     installEventFilter(m_filter);
     connect(m_screen, &QScreen::orientationChanged, this, &NemoWindow::orientationChanged);
+    connect(m_filter, &EditFilter::touchEvent, this, &NemoWindow::touchEventHandler);
 }
 
 Qt::ScreenOrientation NemoWindow::primaryOrientation() const
@@ -89,6 +90,20 @@ void NemoWindow::mouseMoveEvent(QMouseEvent* event)
     }
 }
 
+void NemoWindow::touchEventHandler(QEvent* event)
+{
+    QTouchEvent* tEvent = static_cast<QTouchEvent*>(event);
+    if (event->type() == QEvent::TouchBegin) {
+        m_mousePressed = true;
+        m_firstPoint = tEvent->points().first().position();
+    } else if (event->type() == QEvent::TouchEnd
+        && tEvent->points().first().position().x() - m_firstPoint.x() > width() / 4
+        && m_firstPoint.x() < width() / 4
+        && allowExtendedEvents()) {
+        emit goBack();
+    }
+}
+
 bool NemoWindow::allowExtendedEvents() const
 {
     if (qEnvironmentVariableIsSet("NEMO_DISABLE_EXTENDED_EVENTS")) {

src/controls/nemowindow.h

@@ -47,6 +47,9 @@ class NemoWindow : public QQuickWindow {
 
     void allowExtendedEventsChanged();
 
+private slots:
+    void touchEventHandler(QEvent* event);
+
 private:
     EditFilter* m_filter;
     QScreen* m_screen;