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Diffstat (limited to 'tools/designer/src/lib/shared/qdesigner_dnditem_p.h')
-rw-r--r-- | tools/designer/src/lib/shared/qdesigner_dnditem_p.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/tools/designer/src/lib/shared/qdesigner_dnditem_p.h b/tools/designer/src/lib/shared/qdesigner_dnditem_p.h new file mode 100644 index 0000000..cf36b39 --- /dev/null +++ b/tools/designer/src/lib/shared/qdesigner_dnditem_p.h @@ -0,0 +1,147 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, 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. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@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 |