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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QWINDOWSDRAG_H
#define QWINDOWSDRAG_H
#include "qwindowsinternalmimedata.h"
#include <qpa/qplatformdrag.h>
#include <QtGui/QPixmap>
struct IDropTargetHelper;
QT_BEGIN_NAMESPACE
class QWindowsDropMimeData : public QWindowsInternalMimeData {
public:
QWindowsDropMimeData() {}
IDataObject *retrieveDataObject() const Q_DECL_OVERRIDE;
};
class QWindowsOleDropTarget : public IDropTarget
{
public:
explicit QWindowsOleDropTarget(QWindow *w);
virtual ~QWindowsOleDropTarget();
// IUnknown methods
STDMETHOD(QueryInterface)(REFIID riid, void FAR* FAR* ppvObj);
STDMETHOD_(ULONG, AddRef)(void);
STDMETHOD_(ULONG, Release)(void);
// IDropTarget methods
STDMETHOD(DragEnter)(LPDATAOBJECT pDataObj, DWORD grfKeyState, POINTL pt, LPDWORD pdwEffect);
STDMETHOD(DragOver)(DWORD grfKeyState, POINTL pt, LPDWORD pdwEffect);
STDMETHOD(DragLeave)();
STDMETHOD(Drop)(LPDATAOBJECT pDataObj, DWORD grfKeyState, POINTL pt, LPDWORD pdwEffect);
private:
void handleDrag(QWindow *window, DWORD grfKeyState, const QPoint &, LPDWORD pdwEffect);
ULONG m_refs;
QWindow *const m_window;
QRect m_answerRect;
QPoint m_lastPoint;
DWORD m_chosenEffect;
DWORD m_lastKeyState;
};
class QWindowsDrag : public QPlatformDrag
{
public:
QWindowsDrag();
virtual ~QWindowsDrag();
QMimeData *platformDropData() Q_DECL_OVERRIDE { return &m_dropData; }
Qt::DropAction drag(QDrag *drag) Q_DECL_OVERRIDE;
static QWindowsDrag *instance();
IDataObject *dropDataObject() const { return m_dropDataObject; }
void setDropDataObject(IDataObject *dataObject) { m_dropDataObject = dataObject; }
void releaseDropDataObject();
QMimeData *dropData();
IDropTargetHelper* dropHelper();
QPixmap defaultCursor(Qt::DropAction action) const;
private:
QWindowsDropMimeData m_dropData;
IDataObject *m_dropDataObject;
IDropTargetHelper* m_cachedDropTargetHelper;
mutable QPixmap m_copyDragCursor;
mutable QPixmap m_moveDragCursor;
mutable QPixmap m_linkDragCursor;
mutable QPixmap m_ignoreDragCursor;
};
QT_END_NAMESPACE
#endif // QWINDOWSDRAG_H
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