dnd.h

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/*
    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;
 
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