/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
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 * 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.
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 * The Original Code is mozilla.org code.
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 * The Initial Developer of the Original Code is 
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *
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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 nsScreen_h___
#define nsScreen_h___

#include "nsIDOMScreen.h"
#include "nsISupports.h"
#include "nsIScriptContext.h"
#include "nsCOMPtr.h"

class nsIDocShell;
class nsIDeviceContext;
struct nsRect;

// Script "screen" object
class ScreenImpl : public nsIDOMScreen
{
public:
  ScreenImpl( nsIDocShell* aDocShell );
  virtual ~ScreenImpl();

  NS_IMETHOD SetDocShell(nsIDocShell* aDocShell);

  NS_DECL_ISUPPORTS

  NS_IMETHOD GetTop(PRInt32* aWidth);
  NS_IMETHOD GetLeft(PRInt32* aWidth);
  NS_IMETHOD GetWidth(PRInt32* aWidth);
  NS_IMETHOD GetHeight(PRInt32* aHeight);
  NS_IMETHOD GetPixelDepth(PRInt32* aPixelDepth);
  NS_IMETHOD GetColorDepth(PRInt32* aColorDepth);
  NS_IMETHOD GetAvailWidth(PRInt32* aAvailWidth);
  NS_IMETHOD GetAvailHeight(PRInt32* aAvailHeight);
  NS_IMETHOD GetAvailLeft(PRInt32* aAvailLeft);
  NS_IMETHOD GetAvailTop(PRInt32* aAvailTop);


protected:
  already_AddRefed<nsIDeviceContext> GetDeviceContext();
  nsresult GetRect(nsRect& aRect);
  nsresult GetAvailRect(nsRect& aRect);

  nsIDocShell* mDocShell; // Weak Reference
};

#endif /* nsScreen_h___ */
