/*

* 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 GFXROUNDRECTANGLEITERATORP_H

#define GFXROUNDRECTANGLEITERATORP_H

#include <e32base.h>

#include <e32std.h>

#include "GfxFloatFixPt.h"

#include "GfxPathIterator.h"

#include "GfxAffineTransform.h"

class TGfxRoundRectangle2D;

/**

 * This class provides the methods to cycle through points in a rounded rectangle.

 *

 *  @lib Gfx2D.lib

 *  @since 1.0

 */

class CGfxRoundRectangleIteratorP : public CGfxPathIterator

    {

    public:

        /**

         * Constructor.

         *

         * @since 1.0

         * @param aRect : rounded rectangle to iterator through.

         * @param aTransform : transform to apply.

         * @return

         */

                                CGfxRoundRectangleIteratorP( TGfxRoundRectangle2D* aRoundRect,

                                                             TGfxAffineTransform* aAffine );

        /**

         * Destructor.

         *

         * @since 1.0

         * @return

         */

         virtual                ~CGfxRoundRectangleIteratorP();

        // Implementation of 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:

        TGfxRoundRectangle2D*   iRoundRect;

        TInt32                  iIdx;

        TFloatFixPt                  iRx, iRy;

    };

#endif      // GFXROUNDRECTANGLEITERATORP_H