GUI - add mouse scroll behaviour to scrubbers

Author: samaaron

app/gui/qt/widgets/bpmscrubwidget.cpp

@@ -166,6 +166,22 @@ void BPMScrubWidget::mouseMoveEvent(QMouseEvent* event)
   }
 }
 
+void BPMScrubWidget::wheelEvent(QWheelEvent* event)
+{
+
+  QPoint numPixels = event->pixelDelta() / 4;
+  QPoint numDegrees = event->angleDelta() / 8;
+
+  if (!numPixels.isNull()) {
+    setDisplayAndSyncBPM(m_bpmValue - numPixels.y());
+  } else if (!numDegrees.isNull()) {
+    QPoint numSteps = numDegrees / 15;
+    setDisplayAndSyncBPM(m_bpmValue - numSteps.y());
+  }
+
+  event->accept();
+}
+
 void BPMScrubWidget::mouseDoubleClickEvent(QMouseEvent* event)
 {
   m_isDragging = false;

app/gui/qt/widgets/bpmscrubwidget.h

@@ -50,6 +50,7 @@ public slots:
   void mouseDoubleClickEvent(QMouseEvent * event);
   void keyPressEvent(QKeyEvent* event);
   void keyReleaseEvent(QKeyEvent* event);
+  void wheelEvent(QWheelEvent * event);
 
 private:
   std::shared_ptr<SonicPi::QtAPIClient> m_spClient;

app/gui/qt/widgets/timewarpedit.cpp

@@ -111,6 +111,22 @@ void TimeWarpEdit::mouseMoveEvent(QMouseEvent* event)
   }
 }
 
+void TimeWarpEdit::wheelEvent(QWheelEvent* event)
+{
+
+  QPoint numPixels = event->pixelDelta() / 4;
+  QPoint numDegrees = event->angleDelta() / 8;
+
+  if (!numPixels.isNull()) {
+    setDisplayAndWarpToTime(m_timeWarpValue - numPixels.y());
+  } else if (!numDegrees.isNull()) {
+    QPoint numSteps = numDegrees / 15;
+    setDisplayAndWarpToTime(m_timeWarpValue - numSteps.y());
+  }
+
+  event->accept();
+}
+
 void TimeWarpEdit::mouseDoubleClickEvent(QMouseEvent* event)
 {
   m_isDragging = false;

app/gui/qt/widgets/timewarpedit.h

@@ -45,6 +45,7 @@ public slots:
   void mouseDoubleClickEvent(QMouseEvent * event);
   void keyPressEvent(QKeyEvent* event);
   void keyReleaseEvent(QKeyEvent* event);
+  void wheelEvent(QWheelEvent * event);
 
 private:
   std::shared_ptr<SonicPi::QtAPIClient> m_spClient;