/****************************************************************************

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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** This file is part of the QtOpenGL module of the Qt Toolkit.

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** No Commercial Usage

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** contained in the Technology Preview License Agreement accompanying

** this package.

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** General Public License version 2.1 as published by the Free Software

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** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

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** If you have questions regarding the use of this file, please contact

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** $QT_END_LICENSE$

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****************************************************************************/

#ifndef QPAINTENGINE_OPENGL_P_H

#define QPAINTENGINE_OPENGL_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists for the convenience

// of the QLibrary class.  This header file may change from

// version to version without notice, or even be removed.

//

// We mean it.

//

#include <private/qpaintengineex_p.h>

QT_BEGIN_NAMESPACE

class QOpenGLPaintEnginePrivate;

class QGLTexture;

class QOpenGLPaintEngineState : public QPainterState

{

public:

    QOpenGLPaintEngineState(QOpenGLPaintEngineState &other);

    QOpenGLPaintEngineState();

    ~QOpenGLPaintEngineState();

    QRegion clipRegion;

    bool hasClipping;

    QRect fastClip;

    uint depthClipId;

};

class QOpenGLPaintEngine : public QPaintEngineEx

{

    Q_DECLARE_PRIVATE(QOpenGLPaintEngine)

public:

    QOpenGLPaintEngine();

    ~QOpenGLPaintEngine();

    bool begin(QPaintDevice *pdev);

    bool end();

    // new stuff

    void clipEnabledChanged();

    void penChanged();

    void brushChanged();

    void brushOriginChanged();

    void opacityChanged();

    void compositionModeChanged();

    void renderHintsChanged();

    void transformChanged();

    void fill(const QVectorPath &path, const QBrush &brush);

    void clip(const QVectorPath &path, Qt::ClipOperation op);

    void setState(QPainterState *s);

    QPainterState *createState(QPainterState *orig) const;

    inline QOpenGLPaintEngineState *state() {

        return static_cast<QOpenGLPaintEngineState *>(QPaintEngineEx::state());

    }

    inline const QOpenGLPaintEngineState *state() const {

        return static_cast<const QOpenGLPaintEngineState *>(QPaintEngineEx::state());

    }

    // old stuff

    void updateState(const QPaintEngineState &state);

    void updatePen(const QPen &pen);

    void updateBrush(const QBrush &brush, const QPointF &pt);

    void updateFont(const QFont &font);

    void updateMatrix(const QTransform &matrix);

    void updateClipRegion(const QRegion &region, Qt::ClipOperation op);

    void updateRenderHints(QPainter::RenderHints hints);

    void updateCompositionMode(QPainter::CompositionMode composition_mode);

    void drawRects(const QRectF *r, int rectCount);

    void drawLines(const QLineF *lines, int lineCount);

    void drawPoints(const QPointF *p, int pointCount);

    void drawRects(const QRect *r, int rectCount);

    void drawLines(const QLine *lines, int lineCount);

    void drawPoints(const QPoint *p, int pointCount);

    void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);

    void drawPath(const QPainterPath &path);

    void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode);

    void drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode);

    void drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s);

    void drawImage(const QRectF &r, const QImage &image, const QRectF &sr,

                   Qt::ImageConversionFlags conversionFlags);

    void drawTextItem(const QPointF &p, const QTextItem &ti);

    void drawEllipse(const QRectF &rect);

#ifdef Q_WS_WIN

    HDC handle() const;

#else

    Qt::HANDLE handle() const;

#endif

    inline Type type() const { return QPaintEngine::OpenGL; }

private:

    void drawPolyInternal(const QPolygonF &pa, bool close = true);

    void drawTextureRect(int tx_width, int tx_height, const QRectF &r, const QRectF &sr,

                         GLenum target, QGLTexture *tex);

    Q_DISABLE_COPY(QOpenGLPaintEngine)

};

QT_END_NAMESPACE

#endif // QPAINTENGINE_OPENGL_P_H