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

#ifndef QPIXMAPFILTER_H

#define QPIXMAPFILTER_H

//

//  W A R N I N G

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

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QtCore/qnamespace.h>

#include <QtGui/qpixmap.h>

#include <QtGui/qgraphicseffect.h>

#ifndef QT_NO_GRAPHICSEFFECT

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class QPainter;

class QPixmapData;

class QPixmapFilterPrivate;

class Q_GUI_EXPORT QPixmapFilter : public QObject

{

    Q_OBJECT

    Q_DECLARE_PRIVATE(QPixmapFilter)

public:

    virtual ~QPixmapFilter() = 0;

    enum FilterType {

        ConvolutionFilter,

        ColorizeFilter,

        DropShadowFilter,

        BlurFilter,

        UserFilter = 1024

    };

    FilterType type() const;

    virtual QRectF boundingRectFor(const QRectF &rect) const;

    virtual void draw(QPainter *painter, const QPointF &p, const QPixmap &src, const QRectF &srcRect = QRectF()) const = 0;

protected:

    QPixmapFilter(QPixmapFilterPrivate &d, FilterType type, QObject *parent);

    QPixmapFilter(FilterType type, QObject *parent);

};

class QPixmapConvolutionFilterPrivate;

class Q_GUI_EXPORT QPixmapConvolutionFilter : public QPixmapFilter

{

    Q_OBJECT

    Q_DECLARE_PRIVATE(QPixmapConvolutionFilter)

public:

    QPixmapConvolutionFilter(QObject *parent = 0);

    ~QPixmapConvolutionFilter();

    void setConvolutionKernel(const qreal *matrix, int rows, int columns);

    QRectF boundingRectFor(const QRectF &rect) const;

    void draw(QPainter *painter, const QPointF &dest, const QPixmap &src, const QRectF &srcRect = QRectF()) const;

private:

    friend class QGLPixmapConvolutionFilter;

    friend class QVGPixmapConvolutionFilter;

    const qreal *convolutionKernel() const;

    int rows() const;

    int columns() const;

};

class QPixmapBlurFilterPrivate;

class Q_GUI_EXPORT QPixmapBlurFilter : public QPixmapFilter

{

    Q_OBJECT

    Q_DECLARE_PRIVATE(QPixmapBlurFilter)

public:

    QPixmapBlurFilter(QObject *parent = 0);

    ~QPixmapBlurFilter();

    void setRadius(qreal radius);

    void setBlurHints(QGraphicsBlurEffect::BlurHints hints);

    qreal radius() const;

    QGraphicsBlurEffect::BlurHints blurHints() const;

    QRectF boundingRectFor(const QRectF &rect) const;

    void draw(QPainter *painter, const QPointF &dest, const QPixmap &src, const QRectF &srcRect = QRectF()) const;

private:

    friend class QGLPixmapBlurFilter;

};

class QPixmapColorizeFilterPrivate;

class Q_GUI_EXPORT QPixmapColorizeFilter : public QPixmapFilter

{

    Q_OBJECT

    Q_DECLARE_PRIVATE(QPixmapColorizeFilter)

public:

    QPixmapColorizeFilter(QObject *parent = 0);

    void setColor(const QColor& color);

    QColor color() const;

    void setStrength(qreal strength);

    qreal strength() const;

    void draw(QPainter *painter, const QPointF &dest, const QPixmap &src, const QRectF &srcRect = QRectF()) const;

};

class QPixmapDropShadowFilterPrivate;

class Q_GUI_EXPORT QPixmapDropShadowFilter : public QPixmapFilter

{

    Q_OBJECT

    Q_DECLARE_PRIVATE(QPixmapDropShadowFilter)

public:

    QPixmapDropShadowFilter(QObject *parent = 0);

    ~QPixmapDropShadowFilter();

    QRectF boundingRectFor(const QRectF &rect) const;

    void draw(QPainter *p, const QPointF &pos, const QPixmap &px, const QRectF &src = QRectF()) const;

    qreal blurRadius() const;

    void setBlurRadius(qreal radius);

    QColor color() const;

    void setColor(const QColor &color);

    QPointF offset() const;

    void setOffset(const QPointF &offset);

    inline void setOffset(qreal dx, qreal dy) { setOffset(QPointF(dx, dy)); }

};

QT_END_NAMESPACE

QT_END_HEADER

#endif //QT_NO_GRAPHICSEFFECT

#endif // QPIXMAPFILTER_H