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 GFXPOLYGONRENDERERP_H

    20 #define GFXPOLYGONRENDERERP_H

    21 

    22 #include <e32std.h>

    23 #include <e32base.h>

    24 

    25 #include "GfxFloatFixPt.h"

    26 #include "GfxColor.h"

    27 

    28 

    29 

    30 class TGfxColor;

    31 class MGfxPaint;

    32 class CGfxEdgeListP;

    33 class TGfxRendererInfoP;

    34 

    35 

    36 /**

    37  * Implementation of a rendering class for polygons.

    38  *

    39  *  @lib Gfx2D.lib

    40  *  @since 1.0

    41  */

    42 

    43 class TGfxPolygonRendererP

    44     {

    45     public:

    46 

    47         /**

    48          * constructor

    49          */

    50                             TGfxPolygonRendererP();

    51 

    52         /**

    53          * initiatize

    54          */

    55         void                InitializeP( CGfxEdgeListP* aEdgeList,

    56                                          TGfxRendererInfoP* aRenderInfo,

    57                                          MGfxPaint* aPaint,

    58                                          TBool aWindingNoneZero );

    59 

    60         /**

    61          * render scan line

    62          */

    63         void                RenderScanlineL( TInt aY, TUint32 aAlpha );

    64 

    65 

    66         /**

    67          * blit scan line

    68          */

    69         void                BlitScanline( TUint8* aSrc,

    70                                           TInt aY,

    71                                           TInt aStart,

    72                                           TInt aEnd );

    73 

    74 

    75         /**

    76          * draw HLine

    77          */

    78         static void         DrawHLine( TUint16* aBuf,

    79                                        TUint32 aColor,

    80                                        TInt aLeftX,

    81                                        TInt aWidth );

    82 

    83     protected:

    84 

    85 

    86 

    87         CGfxEdgeListP*      iEdgeList;

    88         TGfxRendererInfoP*  iRenderInfo;

    89         MGfxPaint*          iPaint;

    90 

    91 

    92 

    93         TBool               iWindingNoneZero;

    94     };

    95 

    96 

    97 #endif      // GFXPOLYGONRENDERERP_H