/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * 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
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * mozilla.org.
 * Portions created by the Initial Developer are Copyright (C) 2004
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Stuart Parmenter <pavlov@pavlov.net>
 *   Joe Hewitt <hewitt@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * 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"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * ***** END LICENSE BLOCK ***** */

#include "nsCairoScreenManager.h"
#include "nsCairoScreen.h"

NS_IMPL_ISUPPORTS1(nsCairoScreenManager, nsIScreenManager)

nsCairoScreenManager::nsCairoScreenManager()
{
    NS_INIT_ISUPPORTS();
}

nsCairoScreenManager::~nsCairoScreenManager()
{
}

nsIScreen* 
nsCairoScreenManager::CreateNewScreenObject()
{
    nsIScreen* retval = nsnull;
    if (!mCachedMainScreen) {
        nsCairoScreen *ncs = new nsCairoScreen();
        ncs->Init();
        mCachedMainScreen = ncs;
    }

    NS_IF_ADDREF(retval = mCachedMainScreen.get());

    return retval;
}


NS_IMETHODIMP
nsCairoScreenManager::ScreenForRect(PRInt32 /*inLeft*/, PRInt32 /*inTop*/, PRInt32 /*inWidth*/,
                               PRInt32 /*inHeight*/, nsIScreen **outScreen )
{
    GetPrimaryScreen(outScreen);
    return NS_OK;
}

NS_IMETHODIMP 
nsCairoScreenManager::GetPrimaryScreen(nsIScreen **aPrimaryScreen) 
{
    *aPrimaryScreen = CreateNewScreenObject();
    return NS_OK;
}

NS_IMETHODIMP
nsCairoScreenManager::GetNumberOfScreens(PRUint32 *aNumberOfScreens)
{
    *aNumberOfScreens = 1;
    return NS_OK;
}