svgtopt/gfx2d/inc/GfxStrokeRendererP.h
author Pat Downey <patd@symbian.org>
Wed, 01 Sep 2010 12:20:46 +0100
branchRCL_3
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/*
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* Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Graphics Extension Library header file
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*
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*/
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#ifndef GFXSTROKERENDERERP_H
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#define GFXSTROKERENDERERP_H
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#include <e32std.h>
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#include <e32base.h>
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#include "GfxFloatFixPt.h"
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#include "GfxColor.h"
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class TGfxColor;
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class MGfxPaint;
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class CGfxEdgeListP;
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class TGfxRendererInfoP;
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class CFbsBitGc;
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/**
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 *  Implementation of a rendering class for a stroke.
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 *
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 *  @lib Gfx2D.lib
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 *  @since 1.0
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 */
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class TGfxStrokeRendererP
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    {
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    public:
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        /**
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         * Constructor.
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         *
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         * @since 1.0
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         * @return
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         */
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                            TGfxStrokeRendererP();
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        /**
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         * Intialize this object.
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         *
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         * @since 1.0
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         * @param aEdgeList : list of edge points.
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         * @param aRenderInfo : rendering info.
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         * @param aColor : color to draw.
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         * @param aPolbuf : pixel output buffer.
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         * @return
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         */
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         void                InitializeP( CGfxEdgeListP* aEdgeList,
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                                         TGfxRendererInfoP* aRenderInfo,
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                                         TGfxColor aColor );
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        /**
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         * Render at the given horizontal line.
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         *
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         * @since 1.0
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         * @param aY : y coordinate of line to render.
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         * @return
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         */
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        void                RenderScanlineL( TInt aY );
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        /**
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         * Render at the given horizontal line.
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         *
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         * @since 1.0
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         * @param aY : y coordinate of line to render.
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         * @param aAlpha : alpha value for blending.
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         * @return
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         */
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        void                RenderScanlineL( TInt aY, TUint32 aAlpha );
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    protected:
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        CGfxEdgeListP*      iEdgeList;
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        TGfxRendererInfoP*  iRenderInfo;
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        TGfxColor           iStrokeColor;
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        CFbsBitGc*          iGdiGc;
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    };
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#endif      // GFXSTROKERENDERERP_H