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lightning-sunbird  0.9+nobinonly
nsCairoScreenManager.cpp
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00001 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * mozilla.org.
00019  * Portions created by the Initial Developer are Copyright (C) 2004
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Stuart Parmenter <pavlov@pavlov.net>
00024  *   Joe Hewitt <hewitt@netscape.com>
00025  *
00026  * Alternatively, the contents of this file may be used under the terms of
00027  * either the GNU General Public License Version 2 or later (the "GPL"), or
00028  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00029  * in which case the provisions of the GPL or the LGPL are applicable instead
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00038  * ***** END LICENSE BLOCK ***** */
00039 
00040 #include "nsCairoScreenManager.h"
00041 #include "nsCairoScreen.h"
00042 
00043 NS_IMPL_ISUPPORTS1(nsCairoScreenManager, nsIScreenManager)
00044 
00045 nsCairoScreenManager::nsCairoScreenManager()
00046 {
00047     NS_INIT_ISUPPORTS();
00048 }
00049 
00050 nsCairoScreenManager::~nsCairoScreenManager()
00051 {
00052 }
00053 
00054 nsIScreen* 
00055 nsCairoScreenManager::CreateNewScreenObject()
00056 {
00057     nsIScreen* retval = nsnull;
00058     if (!mCachedMainScreen) {
00059         nsCairoScreen *ncs = new nsCairoScreen();
00060         ncs->Init();
00061         mCachedMainScreen = ncs;
00062     }
00063 
00064     NS_IF_ADDREF(retval = mCachedMainScreen.get());
00065 
00066     return retval;
00067 }
00068 
00069 
00070 NS_IMETHODIMP
00071 nsCairoScreenManager::ScreenForRect(PRInt32 /*inLeft*/, PRInt32 /*inTop*/, PRInt32 /*inWidth*/,
00072                                PRInt32 /*inHeight*/, nsIScreen **outScreen )
00073 {
00074     GetPrimaryScreen(outScreen);
00075     return NS_OK;
00076 }
00077 
00078 NS_IMETHODIMP 
00079 nsCairoScreenManager::GetPrimaryScreen(nsIScreen **aPrimaryScreen) 
00080 {
00081     *aPrimaryScreen = CreateNewScreenObject();
00082     return NS_OK;
00083 }
00084 
00085 NS_IMETHODIMP
00086 nsCairoScreenManager::GetNumberOfScreens(PRUint32 *aNumberOfScreens)
00087 {
00088     *aNumberOfScreens = 1;
00089     return NS_OK;
00090 }