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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
//
// 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.h>
#include <QtCore/qlist.h>
#include <QtCore/qmimedata.h>
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 = nullptr);
~QDesignerDnDItem() override;
DomUI *domUi() const override;
QWidget *decoration() const override;
QWidget *widget() const override;
QPoint hotSpot() const override;
QWidget *source() const override;
DropType type() const override;
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_MOVE(QDesignerDnDItem)
};
// Mime data for use with designer drag and drop operations.
class QDESIGNER_SHARED_EXPORT QDesignerMimeData : public QMimeData {
Q_OBJECT
public:
using QDesignerDnDItems = QList<QDesignerDnDItemInterface *>;
~QDesignerMimeData() override;
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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