Replace QWheelEvent::delta with QWheelEvent::angleDelta

src/analyzer/analyzercontainer.cpp

@@ -112,7 +112,7 @@ void AnalyzerContainer::ShowPopupMenu() {
 }
 
 void AnalyzerContainer::wheelEvent(QWheelEvent *e) {
-  emit WheelEvent(e->delta());
+  emit WheelEvent(e->angleDelta().y());
 }
 
 void AnalyzerContainer::SetEngine(EngineBase *engine) {

src/core/qtsystemtrayicon.cpp

@@ -93,7 +93,7 @@ bool QtSystemTrayIcon::eventFilter(QObject *object, QEvent *event) {
   if (event->type() == QEvent::Wheel) {
     QWheelEvent *e = static_cast<QWheelEvent*>(event);
     if (e->modifiers() == Qt::ShiftModifier) {
-      if (e->delta() > 0) {
+      if (e->angleDelta().y() > 0) {
         emit SeekForward();
       }
       else {
@@ -101,7 +101,7 @@ bool QtSystemTrayIcon::eventFilter(QObject *object, QEvent *event) {
       }
     }
     else if (e->modifiers() == Qt::ControlModifier) {
-      if (e->delta() < 0) {
+      if (e->angleDelta().y() < 0) {
         emit NextTrack();
       }
       else {
@@ -114,7 +114,7 @@ bool QtSystemTrayIcon::eventFilter(QObject *object, QEvent *event) {
       bool prev_next_track = s.value("scrolltrayicon").toBool();
       s.endGroup();
       if (prev_next_track) {
-        if (e->delta() < 0) {
+        if (e->angleDelta().y() < 0) {
           emit NextTrack();
         }
         else {
@@ -122,7 +122,7 @@ bool QtSystemTrayIcon::eventFilter(QObject *object, QEvent *event) {
         }
       }
       else {
-        emit ChangeVolume(e->delta());
+        emit ChangeVolume(e->angleDelta().y());
       }
     }
     return true;

src/widgets/tracksliderslider.cpp

@@ -109,13 +109,15 @@ void TrackSliderSlider::mouseMoveEvent(QMouseEvent* e) {
 }
 
 void TrackSliderSlider::wheelEvent(QWheelEvent *e) {
-  if (e->delta() < 0) {
+
+  if (e->angleDelta().y() < 0) {
     emit SeekBackward();
   }
   else {
     emit SeekForward();
   }
   e->accept();
+
 }
 
 void TrackSliderSlider::enterEvent(QEvent* e) {

src/widgets/volumeslider.cpp

@@ -65,7 +65,7 @@ void SliderSlider::wheelEvent(QWheelEvent* e) {
   }
 
   // Position Slider (horizontal)
-  int step = e->delta() * 1500 / 18;
+  int step = e->angleDelta().y() * 1500 / 18;
   int nval = qBound(minimum(), QSlider::value() + step, maximum());
 
   QSlider::setValue(nval);
@@ -303,7 +303,7 @@ void VolumeSlider::slideEvent(QMouseEvent* e) {
 
 void VolumeSlider::wheelEvent(QWheelEvent* e) {
 
-  const uint step = e->delta() / (e->orientation() == Qt::Vertical ? 30 : -30);
+  const uint step = e->angleDelta().y() / (e->angleDelta().x() == 0 ? 30 : -30);
   QSlider::setValue(QSlider::value() + step);
   emit sliderReleased(value());