--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/skins/AknSkins/polyinc/AknsAlPolyBase.h	Thu Dec 17 09:14:12 2009 +0200
@@ -0,0 +1,159 @@
+/*
+* Copyright (c) 2004-2008 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Base class for PolyLine and PolySpline classes.
+*
+*/
+
+
+#ifndef AKNSALPOLYBASE_H
+#define AKNSALPOLYBASE_H
+
+#include "AknsAlFixed.h"
+#include <e32base.h>
+/**
+* Base class for PolyLine and PolySpline classes.
+*
+* The class is not intended for derivation outside the library.
+*
+* @since 3.0
+*/
+class CAknsAlPolyBase : public CBase
+    {
+    public:  // Constructors and destructor
+
+        /**
+        * Default constructor.
+        *
+        * @since 3.0
+        */
+        CAknsAlPolyBase();
+
+        /**
+        * Destructor
+        *
+        * @since 3.0
+        */
+        virtual ~CAknsAlPolyBase();
+
+    public: // New functions
+
+        /**
+        * Internally all positions are scaled to spacing from 0 to 1.
+        * This method sets the area where positions are scaled
+        * before returning.
+        *
+        * @param aAreaSize
+        *
+        * @since 3.0
+        */
+        void SetScaledArea( const TSize aAreaSize );
+
+        /**
+        * Helper method for scaling point to scaled area.
+        * Possible combinations:
+        * ScaledArea(x,y) -> return TPoint(x*TFixed(x), y*TFixed(y))
+        * ScaledArea(x,0) -> return TPoint(x*Tfixed(x), TFixed(y))
+        * ScaledArea(0,y) -> return TPoint(Tfixed(x), y*TFixed(y))
+        * ScaledArea(0,0) -> return TPoint(Tfixed(x), TFixed(y))
+        *
+        * @param aPoint input point with (TFixed(x), TFixed(y))
+        *
+        * @return TPoint scaled to given scaled area
+        *
+        * @since 3.0
+        */
+        TPoint CalculateScaledPoint( const TPoint aPoint );
+
+        /**
+        * Sets the points for Poly(Line/Spline).
+        * TDesC holds 16-bit integers, which represent values from 0 to 1.
+        * Format of string is: point1_x, point1_y, point2_x, point2_y,...
+        *
+        * @return Leaves with KErrArgument, if the string has odd number of items
+        *   or if 2 adjacent points are the same (zero length line/spline segment).
+        *   Leaves with KErrNoMemory, if there were not enough memory for new points.
+        *
+        * @since 3.0
+        */
+        void SetPolyPointsL( const TDesC16& aPointString );
+
+        /**
+        * Sets the points for 1-dimensional Poly(Line/Spline).
+        * TDesC holds 16-bit integers, which represent values from 0 to 1.
+        * Format of string is: point1_x, point1_y, point2_x, point2_y,...
+        *
+        * @return Leaves with KErrArgument, if the string has odd number of items
+        *   or if 2 adjacent are in wrong order (points must be in ascending order).
+        *   Leaves with KErrNoMemory, if there were not enough memory for new points.
+        *
+        * @since 3.0
+        */
+        void SetPolyPoints1DL( const TDesC16& aPointString );
+
+        /**
+        * Fast square root for integers. If the input is 16.16 fixed point,
+        * the output is 8.8 fixed point. Use SqrtFixed to get correct output.
+        *
+        * @param aParam
+        *
+        * @return Integer square root.
+        *
+        * @since 3.0
+        */
+        TUint Sqrt( TUint aParam );
+
+        /**
+        * Returns the point in poly(line/spline) in scaled area.
+        *
+        * @param aPosition 32-bit integer representing the position in poly(line/spline).
+        *   If aPosition is 0, starting point is returned and if aPosition is 0xffffffff,
+        *   the last point is returned.
+        *
+        * @return Point in poly(line/spline) scaled to the set area or if no
+        *   area is set, returned values are in scale from 0 to 1.
+        *
+        * @since 3.0
+        */
+        virtual TPoint GetPolyPoint( const TUint32 aPosition ) =0;
+
+        /**
+        * Calculates and sets the lengths of poly segments. This is automatically
+        * called after the points have been set.
+        *
+        * @return Returns KErrNoMemory if the lengths couldn't be saved.
+        */
+        virtual void CalculateLengthsL( ) {};
+
+    protected:  // Data
+
+        TSize iAreaSize;
+
+        TInt iPointCount; // number of points
+
+        struct TPolyPoint
+            {
+            TUint16 iX;
+            TUint16 iY;
+            };
+
+        TPolyPoint* iPoints; // poly points
+
+        // for holding cumulative lengths of poly segments - last length is the
+        // whole poly's length
+        TUint32* iSegmentLengths;
+    };
+
+#endif //AKNSALPOLYBASE_H
+
+// End of file