SANKORE-139 refactoring mouse scroll processing for View and GraphicsItems

src/board/UBBoardView.cpp

@@ -634,18 +634,38 @@ UBBoardView::mouseDoubleClickEvent (QMouseEvent *event)
 }
 
 void
-UBBoardView::wheelEvent (QWheelEvent *event)
+UBBoardView::wheelEvent (QWheelEvent *wheelEvent)
 {
-  if (isInteractive () && event->orientation () == Qt::Vertical)
+  if (isInteractive () && wheelEvent->orientation () == Qt::Vertical)
     {
       // Too many wheelEvent are sent, how should we handle them to "smoothly" zoom ?
       // something like zoom( pow(zoomFactor, event->delta() / 120) )
+
       // use DateTime man, store last event time, and if if less than 300ms than this is one big scroll
       // and move scroll with one const speed.
         // so, you no will related with scroll event count
     }
-//  event->accept ();
+
-  QGraphicsView::wheelEvent(event);
+    QList<QGraphicsItem *> selItemsList = scene()->selectedItems();
+    // if NO have selected items, than no need process mouse wheel. just exist
+    if( selItemsList.count() > 0 ) 
+    {
+        // only one selected item possible, so we will work with first item only
+        QGraphicsItem * selItem = selItemsList[0];
+
+        // get items list under mouse cursor
+        QPointF scenePos = mapToScene(wheelEvent->pos());
+        QList<QGraphicsItem *> itemsList = scene()->items(scenePos);
+        
+        QBool isSlectedAndMouseHower = itemsList.contains(selItem);
+        if(isSlectedAndMouseHower)
+        {
+            wheelEvent->accept();
+            QGraphicsView::wheelEvent(wheelEvent);
+        }
+
+    }
+
 }
 
 void
@@ -895,4 +915,3 @@ UBBoardView::setToolCursor (int tool)
     }
 }
 
-

src/domain/UBGraphicsItemDelegate.cpp

@@ -195,12 +195,12 @@ bool UBGraphicsItemDelegate::weelEvent(QGraphicsSceneWheelEvent *event)
 {
     if( mDelegated->isSelected() )
     {
-        event->accept();
+//        event->accept();
         return true;
     }
     else
     {
-        event->ignore();
+//        event->ignore();
         return false;
     }
 }

src/domain/UBGraphicsProxyWidget.cpp

@@ -105,7 +105,10 @@ void UBGraphicsProxyWidget::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
 void UBGraphicsProxyWidget::wheelEvent(QGraphicsSceneWheelEvent *event)
 {
     if( mDelegate->weelEvent(event) )
+    {
         QGraphicsProxyWidget::wheelEvent(event);
+        event->accept();
+    }
 }