1 /*

     2 * Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Graphics Extension Library header file

    15 *

    16 */

    17 

    18 

    19 #ifndef GFXPATHITERATOR_H

    20 #define GFXPATHITERATOR_H

    21 

    22 #include <e32base.h>

    23 #include <e32std.h>

    24 #include "GfxFloatFixPt.h"

    25 

    26 class TGfxAffineTransform;

    27 class MGfxShape;

    28 class CGfxEdgeListP;

    29 

    30 

    31 /**

    32  * This class defines the methods to cycle through points in a path.

    33  *

    34  *  @lib Gfx2D.lib

    35  *  @since 1.0

    36  */

    37 class CGfxPathIterator : public CBase

    38     {

    39     public:

    40 

    41         /**

    42          * Get the point defining the current segment.

    43          *

    44          * @since 1.0

    45          * @param aCoords : storage for points.

    46          * @return segment type.

    47          */

    48         virtual TGfxSegType CurrentSegment( TFloatFixPt* aCoords ) = 0;

    49 

    50         /**

    51          * Determine if end of iterator has been reached.

    52          *

    53          * @since 1.0

    54          * @return true, if iterator reached end.

    55          */

    56         virtual TBool       IsDone() = 0;

    57 

    58         /**

    59          * Cycle to the next segment of the path.

    60          *

    61          * @since 1.0

    62          * @return

    63          */

    64         virtual void        NextL() = 0;

    65 

    66         /**

    67          * Convert to a polygon.

    68          *

    69          * @since 1.0

    70          * @param aRenderer : storage for points of polygon.

    71          * @param aFlatness : level of smoothness.

    72          * @return true, if iterator reached end.

    73          */

    74         virtual void        PolygonizeL( CGfxEdgeListP* /*aRenderer*/,

    75 			TInt /*aFlatness*/ ) {};

    76 

    77 

    78     protected:

    79         TGfxAffineTransform*    iTransform;

    80     };

    81 

    82 #endif      // GFXPATHITERATOR_H