qplatformdrag.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 QPLATFORMDRAG_H
#define QPLATFORMDRAG_H
 
//
//  W A R N I N G
//  -------------
//
// This file is part of the QPA API and is not meant to be used
// in applications. Usage of this API may make your code
// source and binary incompatible with future versions of Qt.
//
 
#include <QtGui/qtguiglobal.h>
#include <QtGui/QPixmap>
 
QT_REQUIRE_CONFIG(draganddrop);
 
QT_BEGIN_NAMESPACE
 
class QMimeData;
class QMouseEvent;
class QDrag;
class QObject;
class QEvent;
class QPlatformDragPrivate;
 
class Q_GUI_EXPORT QPlatformDropQtResponse
{
public:
    QPlatformDropQtResponse(bool accepted, Qt::DropAction acceptedAction);
    bool isAccepted() const;
    Qt::DropAction acceptedAction() const;
 
private:
    bool m_accepted;
    Qt::DropAction m_accepted_action;
 
};
 
class Q_GUI_EXPORT QPlatformDragQtResponse : public QPlatformDropQtResponse
{
public:
    QPlatformDragQtResponse(bool accepted, Qt::DropAction acceptedAction, QRect answerRect);
 
    QRect answerRect() const;
 
private:
    QRect m_answer_rect;
};
 
class Q_GUI_EXPORT QPlatformDrag
{
    Q_DECLARE_PRIVATE(QPlatformDrag)
public:
    Q_DISABLE_COPY_MOVE(QPlatformDrag)
 
    QPlatformDrag();
    virtual ~QPlatformDrag();
 
    QDrag *currentDrag() const;
 
    virtual Qt::DropAction drag(QDrag *m_drag) = 0;
    virtual void cancelDrag();
    void updateAction(Qt::DropAction action);
 
    virtual Qt::DropAction defaultAction(Qt::DropActions possibleActions, Qt::KeyboardModifiers modifiers) const;
 
    static QPixmap defaultPixmap();
 
    virtual bool ownsDragObject() const;
 
private:
    QPlatformDragPrivate *d_ptr;
};
 
QT_END_NAMESPACE
 
#endif