/*

* Copyright (c) 2009 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:    

*

*/

#ifndef HGTRANSFORMEDQUADRENDERER_H

#define HGTRANSFORMEDQUADRENDERER_H

#include "hgquadrenderer.h"

#include <QList>

#include <QImage>

class QPoint;

class QPainter;

class QRectF;

class QMatrix4x4;

class QSize;

class HgTransformedQuad;

/**

 * Abstract base class for quad renderers, that need to tranform quads manually. (using CPU)

 */

class HgTransformedQuadRenderer: public HgQuadRenderer

{

public:

    HgTransformedQuadRenderer(int maxQuads);

    virtual ~HgTransformedQuadRenderer();    

    virtual HgQuad* getQuadAt(const QPointF& point) const;

    virtual bool getQuadTranformedPointsByUserData(QPolygonF& points, const QVariant& userData) const;

    virtual QList<HgQuad*> getVisibleQuads(const QRectF& rect) const;

protected:

    // this must be called from inheriting class

    void init(int maxQuads);

    virtual void transformQuads(const QMatrix4x4& view, const QMatrix4x4& proj, 

        const QPointF& center, const QSizeF& windowSize);

    virtual void drawTransformedQuads(QPainter* painter, const QRectF& rect);

    virtual HgTransformedQuad* createNativeQuad()=0;

private:

    QList<HgTransformedQuad*> mTransformedQuads;    

    QList<HgTransformedQuad*> mSortedQuads;    

};

#endif