qcocoadrag.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 QCOCOADRAG_H
#define QCOCOADRAG_H
 
#include <QtGui>
#include <qpa/qplatformdrag.h>
#include <private/qsimpledrag_p.h>
 
#include <QtGui/private/qdnd_p.h>
#include <QtGui/private/qinternalmimedata_p.h>
 
#include <QtCore/qeventloop.h>
 
Q_FORWARD_DECLARE_OBJC_CLASS(NSView);
Q_FORWARD_DECLARE_OBJC_CLASS(NSEvent);
Q_FORWARD_DECLARE_OBJC_CLASS(NSPasteboard);
 
QT_BEGIN_NAMESPACE
 
class QCocoaDrag : public QPlatformDrag
{
public:
    QCocoaDrag();
    ~QCocoaDrag();
 
    QMimeData *dragMimeData();
    Qt::DropAction drag(QDrag *m_drag) override;
 
    Qt::DropAction defaultAction(Qt::DropActions possibleActions,
                                 Qt::KeyboardModifiers modifiers) const override;
 
    void setLastMouseEvent(NSEvent *event, NSView *view);
 
    void setAcceptedAction(Qt::DropAction act);
    void exitDragLoop();
private:
    QDrag *m_drag;
    NSEvent *m_lastEvent;
    NSView *m_lastView;
    Qt::DropAction m_executed_drop_action;
    QEventLoop *m_internalDragLoop = nullptr;
 
    bool maybeDragMultipleItems();
 
    QPixmap dragPixmap(QDrag *drag, QPoint &hotSpot) const;
};
 
class QCocoaDropData : public QInternalMimeData
{
public:
    QCocoaDropData(NSPasteboard *pasteboard);
    ~QCocoaDropData();
protected:
    bool hasFormat_sys(const QString &mimeType) const;
    QStringList formats_sys() const;
    QVariant retrieveData_sys(const QString &mimeType, QMetaType type) const;
public:
    CFStringRef dropPasteboard;
};
 
 
QT_END_NAMESPACE
 
#endif