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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Designer of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of Qt Designer. This header
// file may change from version to version without notice, or even be removed.
//
// We mean it.
//
#ifndef QDESIGNER_DNDITEM_H
#define QDESIGNER_DNDITEM_H
#include "shared_global_p.h"
#include <QtDesigner/abstractdnditem.h>
#include <QtCore/QPoint>
#include <QtCore/QList>
#include <QtCore/QMimeData>
QT_BEGIN_NAMESPACE
class QDrag;
class QImage;
class QDropEvent;
namespace qdesigner_internal {
class QDESIGNER_SHARED_EXPORT QDesignerDnDItem: public QDesignerDnDItemInterface
{
public:
explicit QDesignerDnDItem(DropType type, QWidget *source = 0);
virtual ~QDesignerDnDItem();
virtual DomUI *domUi() const;
virtual QWidget *decoration() const;
virtual QWidget *widget() const;
virtual QPoint hotSpot() const;
virtual QWidget *source() const;
virtual DropType type() const;
protected:
void setDomUi(DomUI *dom_ui);
void init(DomUI *ui, QWidget *widget, QWidget *decoration, const QPoint &global_mouse_pos);
private:
QWidget *m_source;
const DropType m_type;
const QPoint m_globalStartPos;
DomUI *m_dom_ui;
QWidget *m_widget;
QWidget *m_decoration;
QPoint m_hot_spot;
Q_DISABLE_COPY(QDesignerDnDItem)
};
// Mime data for use with designer drag and drop operations.
class QDESIGNER_SHARED_EXPORT QDesignerMimeData : public QMimeData {
Q_OBJECT
public:
typedef QList<QDesignerDnDItemInterface *> QDesignerDnDItems;
virtual ~QDesignerMimeData();
const QDesignerDnDItems &items() const { return m_items; }
// Execute a drag and drop operation.
static Qt::DropAction execDrag(const QDesignerDnDItems &items, QWidget * dragSource);
QPoint hotSpot() const { return m_hotSpot; }
// Move the decoration. Required for drops over form windows as the position
// is derived from the decoration position.
void moveDecoration(const QPoint &globalPos) const;
// For a move operation, create the undo command sequence to remove
// the widgets from the source form.
static void removeMovedWidgetsFromSourceForm(const QDesignerDnDItems &items);
// Accept an event with the proper action.
void acceptEvent(QDropEvent *e) const;
// Helper to accept an event with the desired action.
static void acceptEventWithAction(Qt::DropAction desiredAction, QDropEvent *e);
private:
QDesignerMimeData(const QDesignerDnDItems &items, QDrag *drag);
Qt::DropAction proposedDropAction() const;
static void setImageTransparency(QImage &image, int alpha);
const QDesignerDnDItems m_items;
QPoint m_globalStartPos;
QPoint m_hotSpot;
};
} // namespace qdesigner_internal
QT_END_NAMESPACE
#endif // QDESIGNER_DNDITEM_H
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