source: trunk/src/qt3support/other/q3dragobject.cpp@ 439

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**
** This file is part of the Qt3Support module of the Qt Toolkit.
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#include "qplatformdefs.h"

#ifndef QT_NO_MIME

#include "q3dragobject.h"
#include "qpixmap.h"
#include "qevent.h"
#include "qfile.h"
#include "qtextcodec.h"
#include "qapplication.h"
#include "qpoint.h"
#include "qwidget.h"
#include "qbuffer.h"
#include "qimagereader.h"
#include "qimagewriter.h"
#include "qimage.h"
#include "qregexp.h"
#include "qdir.h"
#include "qdrag.h"
#include "q3strlist.h"
#include "q3cstring.h"

#include <private/qobject_p.h>

#include <ctype.h>
#if defined(Q_OS_WINCE)
#include <winsock.h>
#include "qfunctions_wince.h"
#endif

QT_BEGIN_NAMESPACE

static QWidget *last_target = 0;

class QDragMime;

class Q3DragObjectPrivate : public QObjectPrivate
{
    Q_DECLARE_PUBLIC(Q3DragObject)
public:
    Q3DragObjectPrivate(): hot(0,0),pm_cursor(0) {}
    QPixmap pixmap;
    QPoint hot;
    // store default cursors
    QPixmap *pm_cursor;
};

class Q3TextDragPrivate : public Q3DragObjectPrivate
{
    Q_DECLARE_PUBLIC(Q3TextDrag)
public:
    Q3TextDragPrivate() { setSubType(QLatin1String("plain")); }
    void setSubType(const QString & st) {
        subtype = st;
        fmt = QString(QLatin1String("text/")).toLatin1() + subtype.toLatin1();
    }

    QString txt;
    QString subtype;
    QByteArray fmt;
};

class Q3StoredDragPrivate : public Q3DragObjectPrivate
{
    Q_DECLARE_PUBLIC(Q3StoredDrag)
public:
    Q3StoredDragPrivate() {}
    const char* fmt;
    QByteArray enc;
};

class Q3ImageDragPrivate : public Q3DragObjectPrivate
{
    Q_DECLARE_PUBLIC(Q3ImageDrag)
public:
    QImage img;
    QList<QByteArray> ofmts;
};

class QDragMime : public QMimeData
{
public:
    QDragMime(Q3DragObject *parent) : QMimeData(), dragObject(parent) { }
    ~QDragMime();

    QByteArray data(const QString &mimetype) const;
    bool hasFormat(const QString &mimetype) const;
    QStringList formats() const;

    QPointer<Q3DragObject> dragObject;
};

QDragMime::~QDragMime()
{
    delete dragObject;
}
QByteArray QDragMime::data(const QString &mimetype) const
{
    return dragObject->encodedData(mimetype.latin1());
}

bool QDragMime::hasFormat(const QString &mimetype) const
{
    return dragObject->provides(mimetype.latin1());
}

QStringList QDragMime::formats() const
{
    int i = 0;
    const char *format;
    QStringList f;
    while ((format = dragObject->format(i))) {
        f.append(QLatin1String(format));
        ++i;
    }
    return f;
}

/*!
    Constructs a drag object called \a name with a parent \a
    dragSource.

    Note that the drag object will be deleted when the \a dragSource is
    deleted.
*/

Q3DragObject::Q3DragObject(QWidget * dragSource, const char * name)
    : QObject(*(new Q3DragObjectPrivate), dragSource)
{
    setObjectName(QLatin1String(name));
}

/*! \internal */
Q3DragObject::Q3DragObject(Q3DragObjectPrivate &dd, QWidget *dragSource)
    : QObject(dd, dragSource)
{
}

/*!
    Destroys the drag object, canceling any drag and drop operation in
    which it is involved.
*/

Q3DragObject::~Q3DragObject()
{
}

#ifndef QT_NO_DRAGANDDROP