/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
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 *
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 * version 3 along with OpenOffice.org.  If not, see
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#ifndef THUMBVIEWER_HXX_INCLUDED
#define THUMBVIEWER_HXX_INCLUDED

#if defined _MSC_VER
#pragma warning(push, 1)
#pragma warning(disable:4917)
#endif
#include <objidl.h>
#include <shlobj.h>
#ifdef __MINGW32__
#include <algorithm>
using std::min;
using std::max;
#endif
#include <gdiplus.h>
#if defined _MSC_VER
#pragma warning(pop)
#endif 
#include <string>

class CThumbviewer : public IPersistFile, public IExtractImage
{
public:
	CThumbviewer(long RefCnt = 1);
	virtual ~CThumbviewer();

	//-----------------------------
	// IUnknown methods
	//-----------------------------

	virtual HRESULT STDMETHODCALLTYPE QueryInterface( 
            REFIID riid,
            void __RPC_FAR *__RPC_FAR *ppvObject);
    
    virtual ULONG STDMETHODCALLTYPE AddRef( void);
        
    virtual ULONG STDMETHODCALLTYPE Release( void);
        
	//----------------------------
	// IExtractImage methods
	//----------------------------

	virtual HRESULT STDMETHODCALLTYPE Extract(HBITMAP *phBmpImage);

    virtual HRESULT STDMETHODCALLTYPE GetLocation(
        LPWSTR pszPathBuffer, 
        DWORD cchMax, 
        DWORD *pdwPriority, 
        const SIZE *prgSize, 
        DWORD dwRecClrDepth, 
        DWORD *pdwFlags);    

	//----------------------------
	// IPersist methods
	//----------------------------

	virtual HRESULT STDMETHODCALLTYPE GetClassID(CLSID* pClassID);

	//----------------------------
	// IPersistFile methods
	//----------------------------

	virtual HRESULT STDMETHODCALLTYPE IsDirty();
        
    virtual HRESULT STDMETHODCALLTYPE Load( 
            /* [in] */ LPCOLESTR pszFileName,
            /* [in] */ DWORD dwMode);
        
    virtual HRESULT STDMETHODCALLTYPE Save( 
            /* [unique][in] */ LPCOLESTR pszFileName,
            /* [in] */ BOOL fRemember);
        
    virtual HRESULT STDMETHODCALLTYPE SaveCompleted( 
            /* [unique][in] */ LPCOLESTR pszFileName);
        
    virtual HRESULT STDMETHODCALLTYPE GetCurFile( 
            /* [out] */ LPOLESTR __RPC_FAR *ppszFileName);

private:
    Gdiplus::Rect CalcScaledAspectRatio(Gdiplus::Rect src, Gdiplus::Rect dest);
        
private:
	long		 ref_count_;
	std::wstring filename_;
	SIZE         thumbnail_size_;
	DWORD        color_depth_;
	ULONG_PTR    gdiplus_token_;
	Gdiplus::Bitmap* signet_;
};

#endif