gecko/widget/windows/nsIdleServiceWin.h

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
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 *
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 * for the specific language governing rights and limitations under the
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 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Gijs Kruitbosch <gijskruitbosch@gmail.com>.
 * Portions created by the Initial Developer are Copyright (C) 2007
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *  Gijs Kruitbosch <gijskruitbosch@gmail.com> 
 *
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 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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#ifndef nsIdleServiceWin_h__
#define nsIdleServiceWin_h__

#include "nsIdleService.h"


/* NOTE: Compare of GetTickCount() could overflow.  This corrects for
* overflow situations.
***/
#ifndef SAFE_COMPARE_EVEN_WITH_WRAPPING
#define SAFE_COMPARE_EVEN_WITH_WRAPPING(A, B) (((int)((long)A - (long)B) & 0xFFFFFFFF))
#endif


class nsIdleServiceWin : public nsIdleService
{
public:
    NS_DECL_ISUPPORTS

    bool PollIdleTime(PRUint32* aIdleTime);

protected:
    bool UsePollMode();
};

#endif // nsIdleServiceWin_h__