qpicture.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QPICTURE_H
#define QPICTURE_H
 
#include <QtGui/qtguiglobal.h>
#include <QtCore/qiodevice.h>
#include <QtCore/qshareddata.h>
#include <QtCore/qstringlist.h>
#include <QtGui/qpaintdevice.h>
 
QT_BEGIN_NAMESPACE
 
#ifndef QT_NO_PICTURE
 
class QPicturePrivate;
class Q_GUI_EXPORT QPicture : public QPaintDevice
{
    Q_DECLARE_PRIVATE(QPicture)
public:
    explicit QPicture(int formatVersion = -1);
    QPicture(const QPicture &);
    ~QPicture();
 
    bool isNull() const;
 
    int devType() const override;
    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);
    QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_PURE_SWAP(QPicture)
    inline void swap(QPicture &other) noexcept
    { 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);
 
    QPaintEngine *paintEngine() const override;
 
protected:
    QPicture(QPicturePrivate &data);
 
    int metric(PaintDeviceMetric m) const override;
 
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
 
#endif // QPICTURE_H