send mouse wheel input to active EditMode during drag operations

apps/opencs/view/render/editmode.cpp

@@ -59,3 +59,5 @@ void CSVRender::EditMode::drag (int diffX, int diffY) {}
 void CSVRender::EditMode::dragCompleted() {}
 
 void CSVRender::EditMode::dragAborted() {}
+
+void CSVRender::EditMode::dragWheel (int diff) {}

apps/opencs/view/render/editmode.hpp

@@ -71,6 +71,9 @@ namespace CSVRender
             /// \note dragAborted will not be called, if the drag is aborted via changing
             /// editing mode
             virtual void dragAborted();
+
+            /// Default-implementation: ignored
+            virtual void dragWheel (int diff);
     };
 }
 

apps/opencs/view/render/scenewidget.cpp

@@ -110,6 +110,8 @@ bool RenderWidget::eventFilter(QObject* obj, QEvent* event)
         keyPressEvent(static_cast<QKeyEvent*>(event));
     if (event->type() == QEvent::KeyRelease)
         keyReleaseEvent(static_cast<QKeyEvent*>(event));
+    if (event->type() == QEvent::Wheel)
+        wheelEvent(static_cast<QWheelEvent *>(event));
 
     // Always pass the event on to GLWidget, i.e. to OSG event queue
     return QObject::eventFilter(obj, event);

apps/opencs/view/render/worldspacewidget.cpp

@@ -599,8 +599,14 @@ void CSVRender::WorldspaceWidget::mouseDoubleClickEvent (QMouseEvent *event)
 
 void CSVRender::WorldspaceWidget::wheelEvent (QWheelEvent *event)
 {
-    //if(!mMouse->wheelEvent(event))
-        RenderWidget::wheelEvent(event);
+    if (mDragging)
+    {
+        EditMode& editMode = dynamic_cast<CSVRender::EditMode&> (*mEditMode->getCurrent());
+
+        editMode.dragWheel (event->delta());
+    }
+
+    RenderWidget::wheelEvent(event);
 }
 
 void CSVRender::WorldspaceWidget::keyPressEvent (QKeyEvent *event)