/*
* Copyright (c) 2002 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:  Graphics Extension Library header file
*
*/


#ifndef GFXLINEITERATORP_H
#define GFXLINEITERATORP_H

#include <e32std.h>

#include "GfxFloatFixPt.h"
#include "GfxLine2D.h"
#include "GfxAffineTransform.h"

class MGfxPathIterator;


/**
 * This class provides the methods to cycle through points in a line.
 *
 *  @lib Gfx2D.lib
 *  @since 1.0
 */
class CGfxLineIteratorP : public CGfxPathIterator
    {
    public:
        /**
         * Contructor.
         *
         * @since 1.0
         * @param aLine : line to cycle through.
         * @param aAffine : transform to apply.
         * @return
         */
        CGfxLineIteratorP( TGfxLine2D* aLine, TGfxAffineTransform* aAffine );

        /**
         * Destructor.
         *
         * @since 1.0
         * @return
         */
        ~CGfxLineIteratorP();

        // Implementing MGfxPathIterator

        /**
         * Get the point defining the current segment.
         *
         * @since 1.0
         * @param aCoords : storage for points.
         * @return segment type.
         */
        TGfxSegType     CurrentSegment( TFloatFixPt* aCoords );

        /**
         * Determine if end of iterator has been reached.
         *
         * @since 1.0
         * @return true, if iterator reached end.
         */
        TBool           IsDone();

        /**
         * Cycle to the next segment of the path.
         *
         * @since 1.0
         * @return
         */
         void            NextL();

        /**
         * Convert to a polygon.
         *
         * @since 1.0
         * @param aRenderer : storage for points of polygon.
         * @param aFlatness : level of smoothness.
         * @return true, if iterator reached end.
         */

    private:
        TGfxLine2D*     iLine;
        TInt32          iIdx;
    };

#endif      // GFXLINEITERATORP_H