File indexing completed on 2025-04-20 08:02:36

 /*
     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 "drag.h"
 
 #include "wayland/datadevicemanager.h"
 
 #include <QList>
 #include <QPoint>
 #include <QPointer>
 
 namespace KWin
 {
 class DataDeviceInterface;
 class DataSourceInterface;
 class SurfaceInterface;
 class Window;
 class X11Window;
 
 namespace Xwl
 {
 class X11Source;
 enum class DragEventReply;
 class Xvisit;
 class Dnd;
 
 class WlToXDrag : public Drag
 {
     Q_OBJECT
     using Drag::Drag;
 
 public:
     explicit WlToXDrag(Dnd *dnd);
     DragEventReply moveFilter(Window *target) override;
     bool handleClientMessage(xcb_client_message_event_t *event) override;
 
 private:
     Dnd *const m_dnd;
     Q_DISABLE_COPY(WlToXDrag)
 };
 
 // visit to an X window
 class Xvisit : public QObject
 {
     Q_OBJECT
 
 public:
     // TODO: handle ask action
 
     Xvisit(X11Window *target, AbstractDataSource *dataSource, Dnd *dnd, QObject *parent);
 
     bool handleClientMessage(xcb_client_message_event_t *event);
     bool handleStatus(xcb_client_message_event_t *event);
     bool handleFinished(xcb_client_message_event_t *event);
 
     void sendPosition(const QPointF &globalPos);
     void leave();
 
     bool finished() const
     {
         return m_state.finished;
     }
     X11Window *target() const
     {
         return m_target;
     }
     void drop();
 Q_SIGNALS:
     void finish(Xvisit *self);
 
 private:
     void sendEnter();
     void sendDrop(uint32_t time);
     void sendLeave();
 
     void receiveOffer();
     void enter();
 
     void retrieveSupportedActions();
     void determineProposedAction();
     void requestDragAndDropAction();
     void setProposedAction();
 
     void doFinish();
     void stopConnections();
 
     Dnd *const m_dnd;
     X11Window *m_target;
     QPointer<AbstractDataSource> m_dataSource;
     uint32_t m_version = 0;
 
     QMetaObject::Connection m_motionConnection;
 
     struct
     {
         bool pending = false;
         bool cached = false;
         QPoint cache;
     } m_pos;
 
     // supported by the Wl source
     DataDeviceManagerInterface::DnDActions m_supportedActions = DataDeviceManagerInterface::DnDAction::None;
     // preferred by the X client
     DataDeviceManagerInterface::DnDAction m_preferredAction = DataDeviceManagerInterface::DnDAction::None;
     // decided upon by the compositor
     DataDeviceManagerInterface::DnDAction m_proposedAction = DataDeviceManagerInterface::DnDAction::None;
 
     struct
     {
         bool entered = false;
         bool dropped = false;
         bool finished = false;
     } m_state;
 
     bool m_accepts = false;
 
     Q_DISABLE_COPY(Xvisit)
 };
 
 } // namespace Xwl
 } // namespace KWin