source: trunk/src/gui/kernel/qmime.h@ 352

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#ifndef QMIME_H
#define QMIME_H

#include <QtCore/qmimedata.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class Q_GUI_EXPORT QMimeSource
{
public:
    virtual ~QMimeSource();
    virtual const char* format(int n = 0) const = 0;
    virtual bool provides(const char*) const;
    virtual QByteArray encodedData(const char*) const = 0;
};


#if defined(Q_WS_WIN)

QT_BEGIN_INCLUDE_NAMESPACE
typedef struct tagFORMATETC FORMATETC;
typedef struct tagSTGMEDIUM STGMEDIUM;
struct IDataObject;

#include <QtCore/qvariant.h>
QT_END_INCLUDE_NAMESPACE

/*
  Encapsulation of conversion between MIME and Windows CLIPFORMAT.
  Not need on X11, as the underlying protocol uses the MIME standard
  directly.
*/

class Q_GUI_EXPORT QWindowsMime
{
public:
    QWindowsMime();
    virtual ~QWindowsMime();

    // for converting from Qt
    virtual bool canConvertFromMime(const FORMATETC &formatetc, const QMimeData *mimeData) const = 0;
    virtual bool convertFromMime(const FORMATETC &formatetc, const QMimeData *mimeData, STGMEDIUM * pmedium) const = 0;
    virtual QVector<FORMATETC> formatsForMime(const QString &mimeType, const QMimeData *mimeData) const = 0;

    // for converting to Qt
    virtual bool canConvertToMime(const QString &mimeType, IDataObject *pDataObj) const = 0;
    virtual QVariant convertToMime(const QString &mimeType, IDataObject *pDataObj, QVariant::Type preferredType) const = 0;
    virtual QString mimeForFormat(const FORMATETC &formatetc) const = 0;

    static int registerMimeType(const QString &mime);

private:
    friend class QClipboardWatcher;
    friend class QDragManager;
    friend class QDropData;
    friend class QOleDataObject;

    static QWindowsMime *converterToMime(const QString &mimeType, IDataObject *pDataObj);
    static QStringList allMimesForFormats(IDataObject *pDataObj);
    static QWindowsMime *converterFromMime(const FORMATETC &formatetc, const QMimeData *mimeData);
    static QVector<FORMATETC> allFormatsForMime(const QMimeData *mimeData);
};

#endif
#if defined(Q_WS_PM)

/*
  Encapsulation of conversion between MIME and OS/2 PM clipboard.
*/

typedef unsigned long ULONG;

class Q_GUI_EXPORT QPMMime
{
public:
    QPMMime();
    virtual ~QPMMime();

    struct MimeCFPair
    {
        MimeCFPair(const QString &m, ULONG f) : mime(m), format(f) {}
        QString mime;
        ULONG format;
    };

    // for converting from Qt
    virtual QList<MimeCFPair> formatsForMimeData(const QMimeData *mimeData) const = 0;
    virtual bool convertFromMimeData(const QMimeData *mimeData, ULONG format,
                                     ULONG &flags, ULONG *data) const = 0;