From eeb2aa177c8fe2cfc6c1383e6e69639803699a3b Mon Sep 17 00:00:00 2001
From: dmv <dmv@opencascade.com>
Date: Thu, 29 Jan 2009 07:28:09 +0000
Subject: [PATCH] IPAL20833 SIGSEGV at Clone View

---
 src/OCCViewer/OCCViewer_ViewModel.cxx  | 9 +++++++--
 src/OCCViewer/OCCViewer_ViewPort3d.cxx | 4 +++-
 src/OCCViewer/OCCViewer_ViewPort3d.h   | 2 ++
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/OCCViewer/OCCViewer_ViewModel.cxx b/src/OCCViewer/OCCViewer_ViewModel.cxx
index 78b825cb4..46499449a 100755
--- a/src/OCCViewer/OCCViewer_ViewModel.cxx
+++ b/src/OCCViewer/OCCViewer_ViewModel.cxx
@@ -207,8 +207,13 @@ void OCCViewer_Viewer::onMouseMove(SUIT_ViewWindow* theWindow, QMouseEvent* theE
   if (!theWindow->inherits("OCCViewer_ViewWindow")) return;
 
   OCCViewer_ViewWindow* aView = (OCCViewer_ViewWindow*) theWindow;
-  if ( isSelectionEnabled() )
-    myAISContext->MoveTo(theEvent->x(), theEvent->y(), aView->getViewPort()->getView());
+
+  if ( isSelectionEnabled() ) {
+    if (aView->getViewPort()->getBusy()) return;
+    Handle(V3d_View) aView3d = aView->getViewPort()->getView();
+    if ( !aView3d.IsNull() )
+      myAISContext->MoveTo(theEvent->x(), theEvent->y(), aView3d);
+  }
 }
 
 
diff --git a/src/OCCViewer/OCCViewer_ViewPort3d.cxx b/src/OCCViewer/OCCViewer_ViewPort3d.cxx
index 10e01347e..7fc204ddd 100755
--- a/src/OCCViewer/OCCViewer_ViewPort3d.cxx
+++ b/src/OCCViewer/OCCViewer_ViewPort3d.cxx
@@ -57,7 +57,8 @@ OCCViewer_ViewPort3d::OCCViewer_ViewPort3d( QWidget* parent, const Handle( V3d_V
 : OCCViewer_ViewPort( parent ),
 myScale( 1.0 ),
 myDegenerated( true ),
-myAnimate( false )
+myAnimate( false ),
+myBusy( true )
 {
   selectVisualId();
 
@@ -459,6 +460,7 @@ void OCCViewer_ViewPort3d::paintEvent( QPaintEvent* e )
 		    activeView()->Redraw( rc.x(), rc.y(), rc.width(), rc.height() );
 	}
 	OCCViewer_ViewPort::paintEvent( e );
+	myBusy = false;
 }
 
 /*!
diff --git a/src/OCCViewer/OCCViewer_ViewPort3d.h b/src/OCCViewer/OCCViewer_ViewPort3d.h
index 13fb9bc86..c8bec10f1 100755
--- a/src/OCCViewer/OCCViewer_ViewPort3d.h
+++ b/src/OCCViewer/OCCViewer_ViewPort3d.h
@@ -74,6 +74,7 @@ public:
   void	                startRotation( int, int, int, const gp_Pnt& );
   void	                rotate( int, int, int, const gp_Pnt& );
   void	                endRotation();
+  bool                  getBusy() {return myBusy;}
 
 protected:
     // EVENTS
@@ -93,6 +94,7 @@ private:
   Handle(V3d_View)	myActiveView;
   bool		        myDegenerated;
   bool                  myAnimate;
+  bool                  myBusy;
   double	        myScale;
 };
 
-- 
2.39.2