viewobject.h

/*****************************************************************************
 * persiststorage.h: ActiveX control for VLC
 *****************************************************************************
 * Copyright (C) 2005 the VideoLAN team
 *
 * Authors: Damien Fouilleul <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

#ifndef __VIEWOBJECT_H__
#define __VIEWOBJECT_H__

#include <oleidl.h>

class VLCViewObject : public IViewObject2
{

public:

    VLCViewObject(VLCPlugin *p_instance) : _p_instance(p_instance),
        _dwAspect(0), _advf(0), _pAdvSink(NULL) {};
    virtual ~VLCViewObject() {};

    // IUnknown methods
    STDMETHODIMP QueryInterface(REFIID riid, void **ppv)
    {
        if( (NULL != ppv)
         && (IID_IUnknown == riid) 
         && (IID_IPersist == riid) 
         && (IID_IViewObject == riid) 
         && (IID_IViewObject2 == riid) ) {
            AddRef();
            *ppv = reinterpret_cast<LPVOID>(this);
            return NOERROR;
        }
        return _p_instance->pUnkOuter->QueryInterface(riid, ppv);
    };

    STDMETHODIMP_(ULONG) AddRef(void) { return _p_instance->pUnkOuter->AddRef(); };
    STDMETHODIMP_(ULONG) Release(void) { return _p_instance->pUnkOuter->Release(); };

    // IViewObject methods
    STDMETHODIMP Draw(DWORD,LONG,PVOID,DVTARGETDEVICE*,HDC,HDC,LPCRECTL,LPCRECTL,BOOL(CALLBACK *)(DWORD),DWORD);
    STDMETHODIMP Freeze(DWORD,LONG,PVOID,LPDWORD);
    STDMETHODIMP GetAdvise(LPDWORD,LPDWORD,LPADVISESINK *);
    STDMETHODIMP GetColorSet(DWORD,LONG,PVOID,DVTARGETDEVICE *,HDC,LPLOGPALETTE *);
    STDMETHODIMP SetAdvise(DWORD,DWORD,LPADVISESINK);
    STDMETHODIMP Unfreeze(DWORD);

    // IViewObject2 methods
    STDMETHODIMP GetExtent(DWORD,LONG,DVTARGETDEVICE *,LPSIZEL);

private:

    VLCPlugin *_p_instance;

    // Advise Sink support
    DWORD _dwAspect;
    DWORD _advf;
    LPADVISESINK _pAdvSink;
};

#endif

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