katie/src/gui/image/qpicture.h

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#ifndef QPICTURE_H
#define QPICTURE_H

#include <QtCore/qstringlist.h>
#include <QtCore/qsharedpointer.h>
#include <QtGui/qpaintdevice.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE


#ifndef QT_NO_PICTURE

class QPicturePrivate;
class Q_GUI_EXPORT QPicture : public QPaintDevice
{
    Q_DECLARE_PRIVATE(QPicture)
public:
    explicit QPicture();
    QPicture(const QPicture &);
    ~QPicture();

    bool isNull() const;

    int devType() const;
    uint size() const;
    const char* data() const;
    virtual void setData(const char* data, uint size);

    bool play(QPainter *p);

    bool load(QIODevice *dev);
    bool load(const QString &fileName);
    bool save(QIODevice *dev);
    bool save(const QString &fileName);

    QRect boundingRect() const;
    void setBoundingRect(const QRect &r);

    QPicture& operator=(const QPicture &p);
#ifdef Q_COMPILER_RVALUE_REFS
    inline QPicture &operator=(QPicture &&other)
    { qSwap(d_ptr, other.d_ptr); return *this; }
#endif
    inline void swap(QPicture &other) { d_ptr.swap(other.d_ptr); }
    void detach();
    bool isDetached() const;

    friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &in, const QPicture &p);
    friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &in, QPicture &p);

    static const char* pictureFormat(const QString &fileName);
    static QList<QByteArray> inputFormats();
    static QList<QByteArray> outputFormats();
    static QStringList inputFormatList();
    static QStringList outputFormatList();

    QPaintEngine *paintEngine() const;

protected:
    QPicture(QPicturePrivate &data);

    int metric(PaintDeviceMetric m) const;

private:
    bool exec(QPainter *p, QDataStream &ds, int i);

    QExplicitlySharedDataPointer<QPicturePrivate> d_ptr;
    friend class QPicturePaintEngine;
    friend class QAlphaPaintEngine;
    friend class QPreviewPaintEngine;

public:
    typedef QExplicitlySharedDataPointer<QPicturePrivate> DataPtr;
    inline DataPtr &data_ptr() { return d_ptr; }
};

Q_DECLARE_SHARED(QPicture)

/*****************************************************************************
  QPicture stream functions
 *****************************************************************************/

#ifndef QT_NO_DATASTREAM
Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QPicture &);
Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QPicture &);
#endif

#endif // QT_NO_PICTURE

QT_END_NAMESPACE

QT_END_HEADER

#endif // QPICTURE_H