Qt5: fix deprecation warnings of QWheelEvent in Qt 5.15

src/Gui/GraphicsViewZoom.cpp

@@ -79,6 +79,17 @@ bool GraphicsViewZoom::eventFilter(QObject *object, QEvent *event) {
   } else if (event->type() == QEvent::Wheel) {
     QWheelEvent* wheel_event = static_cast<QWheelEvent*>(event);
     if (QApplication::keyboardModifiers() == _modifiers) {
+#if QT_VERSION >= QT_VERSION_CHECK(5,0,0)
+      QPoint delta = wheel_event->angleDelta();
+      if (qAbs(delta.y()) > qAbs(delta.x())) { // vertical
+        double angle = -delta.y();
+        if (m_invert_zoom)
+          angle = -angle;
+        double factor = qPow(_zoom_factor_base, angle);
+        gentle_zoom(factor);
+        return true;
+      }
+#else
       if (wheel_event->orientation() == Qt::Vertical) {
         double angle = -wheel_event->delta();
         if (m_invert_zoom)
@@ -87,6 +98,7 @@ bool GraphicsViewZoom::eventFilter(QObject *object, QEvent *event) {
         gentle_zoom(factor);
         return true;
       }
+#endif
     }
   }
   Q_UNUSED(object);

src/Gui/InputField.cpp

@@ -692,7 +692,11 @@ void InputField::wheelEvent (QWheelEvent * event)
     }
 
     double factor = event->modifiers() & Qt::ControlModifier ? 10 : 1;
+#if QT_VERSION >= QT_VERSION_CHECK(5,0,0)
+    double step = event->angleDelta().y() > 0 ? StepSize : -StepSize;
+#else
     double step = event->delta() > 0 ? StepSize : -StepSize;
+#endif
     double val = actUnitValue + factor * step;
     if (val > Maximum)
         val = Maximum;

src/Gui/Quarter/Mouse.cpp

@@ -168,7 +168,12 @@ const SoEvent *
 MouseP::mouseWheelEvent(QWheelEvent * event)
 {
   PUBLIC(this)->setModifiers(this->wheel, event);
+#if QT_VERSION >= QT_VERSION_CHECK(5,15,0)
+  QPoint pos = event->position().toPoint();
+  SbVec2s pos(pos.x(), PUBLIC(this)->windowsize[1] - pos.y() - 1);
+#else
   SbVec2s pos(event->pos().x(), PUBLIC(this)->windowsize[1] - event->pos().y() - 1);
+#endif
   // the following corrects for high-dpi displays (e.g. mac retina)
 #if QT_VERSION >= 0x050000
   pos *= publ->quarter->devicePixelRatio();
@@ -182,7 +187,11 @@ MouseP::mouseWheelEvent(QWheelEvent * event)
   // value indicates that the wheel was rotated backwards toward the
   // user. A typical wheel click is 120, but values coming from touchpad
   // can be a lot lower
+#if QT_VERSION >= QT_VERSION_CHECK(5,0,0)
+  this->wheel->setDelta(event->angleDelta().y());
+#else
   this->wheel->setDelta(event->delta());
+#endif
 
   return this->wheel;
 }

src/Gui/View3DInventorViewer.cpp

@@ -270,8 +270,13 @@ public:
         // Thus, we filter out horizontal scrolling.
         if (event->type() == QEvent::Wheel) {
             QWheelEvent* we = static_cast<QWheelEvent*>(event);
+#if QT_VERSION >= QT_VERSION_CHECK(5,0,0)
+            if (qAbs(we->angleDelta().x()) > qAbs(we->angleDelta().y()))
+                return true;
+#else
             if (we->orientation() == Qt::Horizontal)
                 return true;
+#endif
         }
         else if (event->type() == QEvent::KeyPress) {
             QKeyEvent* ke = static_cast<QKeyEvent*>(event);

src/Mod/Drawing/Gui/DrawingView.cpp

@@ -197,7 +197,11 @@ void SvgView::paintEvent(QPaintEvent *event)
 
 void SvgView::wheelEvent(QWheelEvent *event)
 {
+#if QT_VERSION >= QT_VERSION_CHECK(5,0,0)
+    int delta = -event->angleDelta().y();
+#else
     int delta = -event->delta();
+#endif
     if (m_invertZoom)
         delta = -delta;
     qreal factor = std::pow(1.2, delta / 240.0);

src/Mod/Image/Gui/ImageView.cpp

@@ -476,11 +476,21 @@ void ImageView::wheelEvent(QWheelEvent * cEvent)
        // Mouse event coordinates are relative to top-left of image view (including toolbar!)
        // Get current cursor position relative to top-left of image box
        QPoint offset = _pGLImageBox->pos();
+#if QT_VERSION >= QT_VERSION_CHECK(5,15,0)
+       QPoint pos = cEvent->position().toPoint();
+       int box_x = pos.x() - offset.x();
+       int box_y = pos.y() - offset.y();
+#else
        int box_x = cEvent->x() - offset.x();
        int box_y = cEvent->y() - offset.y();
+#endif
 
        // Zoom around centrally displayed image point
+#if QT_VERSION >= QT_VERSION_CHECK(5,0,0)
+       int numTicks = cEvent->angleDelta().y() / 120;
+#else
        int numTicks = cEvent->delta() / 120;
+#endif
        if (_invertZoom)
            numTicks = -numTicks;
 

src/Mod/TechDraw/Gui/QGVPage.cpp

@@ -1026,7 +1026,12 @@ void QGVPage::wheelEvent(QWheelEvent *event)
     }
 
     QPointF center = mapToScene(viewport()->rect().center());
-    qreal factor = std::pow(mouseBase, event->delta() / mouseAdjust);
+#if QT_VERSION >= QT_VERSION_CHECK(5,0,0)
+    int delta = event->angleDelta().y();
+#else
+    int delta = event->delta();
+#endif
+    qreal factor = std::pow(mouseBase, delta / mouseAdjust);
     scale(factor, factor);
 
     QPointF newCenter = mapToScene(viewport()->rect().center());

src/Mod/Web/Gui/BrowserView.cpp

@@ -277,7 +277,11 @@ void WebView::mousePressEvent(QMouseEvent *event)
 void WebView::wheelEvent(QWheelEvent *event)
 {
     if (QApplication::keyboardModifiers() & Qt::ControlModifier) {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
+        qreal factor = zoomFactor() + (-event->angleDelta().y() / 800.0);
+#else
         qreal factor = zoomFactor() + (-event->delta() / 800.0);
+#endif
         setZoomFactor(factor);
         event->accept();
         return;