525d12bee5
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60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
/*
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SPDX-FileCopyrightText: 2017 Marco Martin <notmart@gmail.com>
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SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
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SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
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*/
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#pragma once
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#include <QObject>
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#include <KWaylandServer/kwaylandserver_export.h>
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namespace KWaylandServer
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{
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class Display;
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class SurfaceInterface;
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class XdgForeignV2InterfacePrivate;
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/**
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* This class encapsulates the server side logic of the XdgForeign protocol.
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* a process can export a surface to be identifiable by a server-wide unique
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* string handle, and another process can in turn import that surface, and set it
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* as transient parent for one of its own surfaces.
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* This parent relationship is traced by the transientChanged signal and the
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* transientFor method.
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*/
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class KWAYLANDSERVER_EXPORT XdgForeignV2Interface : public QObject
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{
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Q_OBJECT
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public:
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XdgForeignV2Interface(Display *display, QObject *parent = nullptr);
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~XdgForeignV2Interface() override;
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/**
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* If a client did import a surface and set one of its own as child of the
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* imported one, this returns the mapping.
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* @param surface the child surface we want to search an imported transientParent for.
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* @returns the transient parent of the surface, if found, nullptr otherwise.
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*/
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SurfaceInterface *transientFor(SurfaceInterface *surface);
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Q_SIGNALS:
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/**
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* A surface got a new imported transient parent
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* @param parent is the surface exported by one client and imported into another, which will act as parent.
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* @param child is the surface that the importer client did set as child of the surface
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* that it imported.
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* If one of the two paramenters is nullptr, it means that a previously relation is not
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* valid anymore and either one of the surfaces has been unmapped, or the parent surface
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* is not exported anymore.
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*/
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void transientChanged(KWaylandServer::SurfaceInterface *child, KWaylandServer::SurfaceInterface *parent);
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private:
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friend class XdgExporterV2Interface;
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friend class XdgImporterV2Interface;
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QScopedPointer<XdgForeignV2InterfacePrivate> d;
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};
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}
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