TGLOverlay.cxx

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// @(#)root/gl:$Id$
// Author:  Matevz Tadel, Feb 2007
 
/*************************************************************************
 * Copyright (C) 1995-2004, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
#include "TGLOverlay.h"
 
/** \class TGLOverlayElement
\ingroup opengl
An overlay element. Supports drawing (Render) and event-handling
*/
 
 
////////////////////////////////////////////////////////////////////////////////
/// Mouse has entered this element.
/// Return TRUE if you want additional events.
 
Bool_t TGLOverlayElement::MouseEnter(TGLOvlSelectRecord& /*selRec*/)
{
   return kFALSE;
}
 
Bool_t TGLOverlayElement::MouseStillInside(TGLOvlSelectRecord& /*selRec*/)
{
   // A new overlay hit is about to be processed.
   // By returning FALSE one can force mouse-leave (MouseLeave will be
   // called shortly).
   // If you return TRUE, Handle will be called soon.
   // Use this if your overlay object has some inactive parts,
   // see TGLManipSet.
 
   return kTRUE;
}
 
////////////////////////////////////////////////////////////////////////////////
/// Handle overlay event.
/// Return TRUE if event was handled.
 
Bool_t TGLOverlayElement::Handle(TGLRnrCtx          & /*rnrCtx*/,
                                 TGLOvlSelectRecord & /*selRec*/,
                                 Event_t            * /*event*/)
{
   return kFALSE;
}
 
////////////////////////////////////////////////////////////////////////////////
/// Mouse has left the element.
 
void TGLOverlayElement::MouseLeave()
{
}
 
 
/** \class TGLOverlayList
\ingroup opengl
Manage a collection of overlay elements.
Not used yet.
*/