File indexing completed on 2024-05-19 16:35:32

 /*
     SPDX-FileCopyrightText: 2017 Marco Martin <notmart@gmail.com>
     SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 #pragma once
 
 #include "kwin_export.h"
 
 #include <QObject>
 
 namespace KWaylandServer
 {
 class Display;
 class SurfaceInterface;
 class XdgForeignV2InterfacePrivate;
 
 /**
  * This class encapsulates the server side logic of the XdgForeign protocol.
  * a process can export a surface to be identifiable by a server-wide unique
  * string handle, and another process can in turn import that surface, and set it
  * as transient parent for one of its own surfaces.
  * This parent relationship is traced by the transientChanged signal and the
  * transientFor method.
  */
 class KWIN_EXPORT XdgForeignV2Interface : public QObject
 {
     Q_OBJECT
 public:
     XdgForeignV2Interface(Display *display, QObject *parent = nullptr);
     ~XdgForeignV2Interface() override;
 
     /**
      * If a client did import a surface and set one of its own as child of the
      * imported one, this returns the mapping.
      * @param surface the child surface we want to search an imported transientParent for.
      * @returns the transient parent of the surface, if found, nullptr otherwise.
      */
     SurfaceInterface *transientFor(SurfaceInterface *surface);
 
 Q_SIGNALS:
     /**
      * A surface got a new imported transient parent
      * @param parent is the surface exported by one client and imported into another, which will act as parent.
      * @param child is the surface that the importer client did set as child of the surface
      * that it imported.
      * If one of the two paramenters is nullptr, it means that a previously relation is not
      * valid anymore and either one of the surfaces has been unmapped, or the parent surface
      * is not exported anymore.
      */
     void transientChanged(KWaylandServer::SurfaceInterface *child, KWaylandServer::SurfaceInterface *parent);
 
 private:
     friend class XdgExporterV2Interface;
     friend class XdgImporterV2Interface;
     std::unique_ptr<XdgForeignV2InterfacePrivate> d;
 };
 
 }