+ if (!mySelectionEnabled || theEvent->button() != Qt::LeftButton) {
+ emit mouseRelease(theWindow, theEvent);
+ return;
+ }
+
+ myEndPnt.setX(theEvent->x()); myEndPnt.setY(theEvent->y());
+ bool aHasShift = (theEvent->modifiers() & Qt::ShiftModifier);
+
+ //if (!aHasShift)
+ // emit deselection();
+
+ if (myStartPnt == myEndPnt) {
+ // the MoveTo is necessary for the second click in the same point. Otherwise the selection is lost.
+ Handle(V3d_View) aView3d = theWindow->viewPort()->getView();
+ if ( !aView3d.IsNull() ) {
+ myAISContext->MoveTo(theEvent->x(), theEvent->y(), aView3d);
+ }
+ if (aHasShift && myMultiSelectionEnabled)
+ myAISContext->ShiftSelect();
+ else
+ myAISContext->Select();
+ } else {
+ if (aHasShift && myMultiSelectionEnabled)
+ myAISContext->ShiftSelect(myStartPnt.x(), myStartPnt.y(),
+ myEndPnt.x(), myEndPnt.y(),
+ theWindow->viewPort()->getView(), false );
+ else
+ myAISContext->Select(myStartPnt.x(), myStartPnt.y(),
+ myEndPnt.x(), myEndPnt.y(),
+ theWindow->viewPort()->getView(), false );
+
+ int Nb = myAISContext->NbSelected();
+ if( Nb>1 && !myMultiSelectionEnabled ) {
+ myAISContext->InitSelected();
+ Handle( SelectMgr_EntityOwner ) anOwner = myAISContext->SelectedOwner();
+ if( !anOwner.IsNull() ) {
+ myAISContext->ClearSelected( Standard_False );
+ myAISContext->AddOrRemoveSelected( anOwner, Standard_False );
+ }
+ }
+
+ myAISContext->UpdateCurrentViewer();
+ }
+ emit mouseRelease(theWindow, theEvent);
+ emit selectionChanged();
+}
+
+//******************************************************
+void XGUI_Viewer::setMultiSelectionEnabled(bool toEnable)
+{
+ myMultiSelectionEnabled = toEnable;
+ updateViewsDrawMode();
+}
+
+//******************************************************
+void XGUI_Viewer::setSelectionEnabled(bool toEnable)
+{
+ mySelectionEnabled = toEnable;
+ updateViewsDrawMode();
+}