/**************************************************************************** | |
** | |
** Copyright (C) 2011 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. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
** 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. | |
** | |
** GNU General Public License Usage | |
** Alternatively, this file may be used under the terms of the GNU General | |
** Public License version 3.0 as published by the Free Software Foundation | |
** and appearing in the file LICENSE.GPL included in the packaging of this | |
** file. Please review the following information to ensure the GNU General | |
** Public License version 3.0 requirements will be met: | |
** http://www.gnu.org/copyleft/gpl.html. | |
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** Other Usage | |
** Alternatively, this file may be used in accordance with the terms and | |
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** $QT_END_LICENSE$ | |
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****************************************************************************/ | |
// | |
// 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 |