File indexing completed on 2024-05-19 05:32:49

 /*
     KWin - the KDE window manager
     This file is part of the KDE project.
 
     SPDX-FileCopyrightText: 2019 Roman Gilg <subdiff@gmail.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 #pragma once
 
 #include "selection.h"
 
 #include "wayland/datadevicemanager.h"
 
 #include <QPoint>
 
 namespace KWin
 {
 class SurfaceInterface;
 class Window;
 
 namespace Xwl
 {
 class Drag;
 enum class DragEventReply;
 
 class XwlDropHandler;
 
 /**
  * Represents the drag and drop mechanism, on X side this is the XDND protocol.
  * For more information on XDND see: https://johnlindal.wixsite.com/xdnd
  */
 class Dnd : public Selection
 {
     Q_OBJECT
 
 public:
     explicit Dnd(xcb_atom_t atom, QObject *parent);
 
     static uint32_t version();
     XwlDropHandler *dropHandler() const;
 
     void doHandleXfixesNotify(xcb_xfixes_selection_notify_event_t *event) override;
     void x11OfferLost() override;
     void x11OffersChanged(const QStringList &added, const QStringList &removed) override;
     bool handleClientMessage(xcb_client_message_event_t *event) override;
 
     DragEventReply dragMoveFilter(Window *target);
 
     using DnDAction = DataDeviceManagerInterface::DnDAction;
     using DnDActions = DataDeviceManagerInterface::DnDActions;
     static DnDAction atomToClientAction(xcb_atom_t atom);
     static xcb_atom_t clientActionToAtom(DnDAction action);
 
 private:
     // start and end Wl native client drags (Wl -> Xwl)
     void startDrag();
     void endDrag();
     void clearOldDrag(Drag *drag);
 
     // active drag or null when no drag active
     Drag *m_currentDrag = nullptr;
     QList<Drag *> m_oldDrags;
 
     XwlDropHandler *m_dropHandler;
 
     Q_DISABLE_COPY(Dnd)
 };
 
 } // namespace Xwl
 } // namespace KWin