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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtGui module 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 QSIMPLEDRAG_P_H
#define QSIMPLEDRAG_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <qpa/qplatformdrag.h>
#include <QtCore/QObject>
QT_BEGIN_NAMESPACE
#ifndef QT_NO_DRAGANDDROP
class QMouseEvent;
class QWindow;
class QEventLoop;
class QDropData;
class QShapedPixmapWindow;
class QScreen;
class Q_GUI_EXPORT QBasicDrag : public QPlatformDrag, public QObject
{
public:
virtual ~QBasicDrag();
virtual Qt::DropAction drag(QDrag *drag) Q_DECL_OVERRIDE;
virtual bool eventFilter(QObject *o, QEvent *e) Q_DECL_OVERRIDE;
protected:
QBasicDrag();
virtual void startDrag();
virtual void cancel();
virtual void move(const QPoint &globalPos) = 0;
virtual void drop(const QPoint &globalPos) = 0;
virtual void endDrag();
void moveShapedPixmapWindow(const QPoint &deviceIndependentPosition);
QShapedPixmapWindow *shapedPixmapWindow() const { return m_drag_icon_window; }
void recreateShapedPixmapWindow(QScreen *screen, const QPoint &pos);
void updateCursor(Qt::DropAction action);
bool canDrop() const { return m_can_drop; }
void setCanDrop(bool c) { m_can_drop = c; }
Qt::DropAction executedDropAction() const { return m_executed_drop_action; }
void setExecutedDropAction(Qt::DropAction da) { m_executed_drop_action = da; }
QDrag *drag() const { return m_drag; }
private:
void enableEventFilter();
void disableEventFilter();
void restoreCursor();
void exitDndEventLoop();
bool m_restoreCursor;
QEventLoop *m_eventLoop;
Qt::DropAction m_executed_drop_action;
bool m_can_drop;
QDrag *m_drag;
QShapedPixmapWindow *m_drag_icon_window;
};
class Q_GUI_EXPORT QSimpleDrag : public QBasicDrag
{
public:
QSimpleDrag();
virtual QMimeData *platformDropData() Q_DECL_OVERRIDE;
protected:
virtual void startDrag() Q_DECL_OVERRIDE;
virtual void cancel() Q_DECL_OVERRIDE;
virtual void move(const QPoint &globalPos) Q_DECL_OVERRIDE;
virtual void drop(const QPoint &globalPos) Q_DECL_OVERRIDE;
private:
QWindow *m_current_window;
};
#endif // QT_NO_DRAGANDDROP
QT_END_NAMESPACE
#endif
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