148 lines
4.6 KiB
C++
148 lines
4.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Designer of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial Usage
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists for the convenience
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// of Qt Designer. This header
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// file may change from version to version without notice, or even be removed.
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//
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// We mean it.
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//
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#ifndef QDESIGNER_DNDITEM_H
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#define QDESIGNER_DNDITEM_H
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#include "shared_global_p.h"
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#include <QtDesigner/abstractdnditem.h>
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#include <QtCore/QPoint>
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#include <QtCore/QList>
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#include <QtCore/QMimeData>
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QT_BEGIN_NAMESPACE
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class QDrag;
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class QImage;
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class QDropEvent;
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namespace qdesigner_internal {
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class QDESIGNER_SHARED_EXPORT QDesignerDnDItem: public QDesignerDnDItemInterface
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{
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public:
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explicit QDesignerDnDItem(DropType type, QWidget *source = 0);
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virtual ~QDesignerDnDItem();
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virtual DomUI *domUi() const;
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virtual QWidget *decoration() const;
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virtual QWidget *widget() const;
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virtual QPoint hotSpot() const;
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virtual QWidget *source() const;
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virtual DropType type() const;
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protected:
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void setDomUi(DomUI *dom_ui);
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void init(DomUI *ui, QWidget *widget, QWidget *decoration, const QPoint &global_mouse_pos);
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private:
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QWidget *m_source;
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const DropType m_type;
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const QPoint m_globalStartPos;
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DomUI *m_dom_ui;
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QWidget *m_widget;
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QWidget *m_decoration;
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QPoint m_hot_spot;
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Q_DISABLE_COPY(QDesignerDnDItem)
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};
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// Mime data for use with designer drag and drop operations.
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class QDESIGNER_SHARED_EXPORT QDesignerMimeData : public QMimeData {
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Q_OBJECT
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public:
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typedef QList<QDesignerDnDItemInterface *> QDesignerDnDItems;
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virtual ~QDesignerMimeData();
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const QDesignerDnDItems &items() const { return m_items; }
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// Execute a drag and drop operation.
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static Qt::DropAction execDrag(const QDesignerDnDItems &items, QWidget * dragSource);
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QPoint hotSpot() const { return m_hotSpot; }
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// Move the decoration. Required for drops over form windows as the position
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// is derived from the decoration position.
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void moveDecoration(const QPoint &globalPos) const;
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// For a move operation, create the undo command sequence to remove
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// the widgets from the source form.
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static void removeMovedWidgetsFromSourceForm(const QDesignerDnDItems &items);
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// Accept an event with the proper action.
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void acceptEvent(QDropEvent *e) const;
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// Helper to accept an event with the desired action.
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static void acceptEventWithAction(Qt::DropAction desiredAction, QDropEvent *e);
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private:
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QDesignerMimeData(const QDesignerDnDItems &items, QDrag *drag);
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Qt::DropAction proposedDropAction() const;
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static void setImageTransparency(QImage &image, int alpha);
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const QDesignerDnDItems m_items;
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QPoint m_globalStartPos;
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QPoint m_hotSpot;
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};
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} // namespace qdesigner_internal
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QT_END_NAMESPACE
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#endif // QDESIGNER_DNDITEM_H
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