src/Tools/ThumbnailProvider/ThumbnailProvider.h

// SPDX-License-Identifier: LGPL-2.1-or-later

/***************************************************************************
 *   Copyright (c) 2011 Werner Mayer <wmayer@users.sourceforge.net>        *
 *                                                                         *
 *   This file is part of the FreeCAD CAx development system.              *
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Library General Public           *
 *   License as published by the Free Software Foundation; either          *
 *   version 2 of the License, or (at your option) any later version.      *
 *                                                                         *
 *   This library  is distributed in the hope that it will be useful,      *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU Library General Public License for more details.                  *
 *                                                                         *
 *   You should have received a copy of the GNU Library General Public     *
 *   License along with this library; see the file COPYING.LIB. If not,    *
 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
 *   Suite 330, Boston, MA  02111-1307, USA                                *
 *                                                                         *
 ***************************************************************************/


#pragma once

// class CThumbnailProvider : public IThumbnailProvider, IObjectWithSite, IInitializeWithStream
class CThumbnailProvider: public IThumbnailProvider, IObjectWithSite, IInitializeWithFile
{
private:
    LONG m_cRef;
    IUnknown* m_pSite;
    TCHAR m_szFile[1000];

    ~CThumbnailProvider();
    bool CheckZip() const;

public:
    CThumbnailProvider();

    //  IUnknown methods
    STDMETHOD(QueryInterface)(REFIID, void**);
    STDMETHOD_(ULONG, AddRef)();
    STDMETHOD_(ULONG, Release)();

    //  IInitializeWithSteam methods
    STDMETHOD(Initialize)(IStream*, DWORD);
    //  IInitializeWithFile methods
    STDMETHOD(Initialize)(LPCWSTR, DWORD);

    //  IThumbnailProvider methods
    STDMETHOD(GetThumbnail)(UINT, HBITMAP*, WTS_ALPHATYPE*);

    //  IObjectWithSite methods
    STDMETHOD(GetSite)(REFIID, void**);
    STDMETHOD(SetSite)(IUnknown*);
};