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diff --git a/pcbnew/tools/grid_helper.h b/pcbnew/tools/grid_helper.h
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+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2014 CERN
+ * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you may find one here:
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ * or you may search the http://www.gnu.org website for the version 2 license,
+ * or you may write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+#ifndef __GRID_HELPER_H
+#define __GRID_HELPER_H
+
+#include <vector>
+
+#include <math/vector2d.h>
+#include <boost/optional.hpp>
+
+#include <layers_id_colors_and_visibility.h>
+
+#include <geometry/seg.h>
+
+class PCB_BASE_FRAME;
+
+class GRID_HELPER {
+public:
+
+    GRID_HELPER( PCB_BASE_FRAME* aFrame );
+    ~GRID_HELPER();
+
+    void SetGrid( int aSize );
+    void SetOrigin( const VECTOR2I& aOrigin );
+
+    VECTOR2I GetGrid() const;
+    VECTOR2I GetOrigin() const;
+
+    void SetAuxAxes( bool aEnable, const VECTOR2I& aOrigin = VECTOR2I( 0, 0 ), bool aEnableDiagonal = false );
+
+    VECTOR2I Align( const VECTOR2I& aPoint ) const;
+
+    VECTOR2I AlignToSegment ( const VECTOR2I& aPoint, const SEG& aSeg );
+
+    VECTOR2I BestDragOrigin( const VECTOR2I& aMousePos, BOARD_ITEM* aItem );
+    VECTOR2I BestSnapAnchor( const VECTOR2I& aOrigin, BOARD_ITEM* aDraggedItem );
+
+private:
+    enum ANCHOR_FLAGS {
+        CORNER = 0x1,
+        OUTLINE = 0x2,
+        SNAPPABLE = 0x4,
+        ORIGIN = 0x8
+    };
+
+    struct ANCHOR
+    {
+        ANCHOR( VECTOR2I aPos, int aFlags = CORNER | SNAPPABLE, BOARD_ITEM* aItem = NULL ):
+            pos( aPos ), flags( aFlags ), item( aItem ) {} ;
+
+        VECTOR2I pos;
+        int flags;
+        BOARD_ITEM* item;
+
+        double Distance( const VECTOR2I& aP ) const
+        {
+            return ( aP - pos ).EuclideanNorm();
+        }
+
+        //bool CanSnapItem( const BOARD_ITEM* aItem ) const;
+    };
+
+    std::vector<ANCHOR> m_anchors;
+
+    std::set<BOARD_ITEM*> queryVisible( const BOX2I& aArea ) const;
+
+    void addAnchor( const VECTOR2I& aPos, int aFlags = CORNER | SNAPPABLE, BOARD_ITEM* aItem = NULL )
+    {
+        m_anchors.push_back( ANCHOR( aPos, aFlags, aItem ) );
+    }
+
+    ANCHOR* nearestAnchor( const VECTOR2I& aPos, int aFlags, LSET aMatchLayers );
+
+    void computeAnchors( BOARD_ITEM* aItem, const VECTOR2I& aRefPos );
+
+    void clearAnchors()
+    {
+        m_anchors.clear();
+    }
+
+    PCB_BASE_FRAME* m_frame;
+    boost::optional<VECTOR2I> m_auxAxis;
+    bool m_diagonalAuxAxesEnable;
+};
+
+#endif