/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.0 (the "NPL"); you may not use this file except in
 * compliance with the NPL.  You may obtain a copy of the NPL at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the NPL is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
 * for the specific language governing rights and limitations under the
 * NPL.
 *
 * The Initial Developer of this code under the NPL is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
 * Reserved.
 */

#ifndef nsDeviceContextQT_h___
#define nsDeviceContextQT_h___

#include "nsDeviceContext.h"
#include "nsUnitConversion.h"
#include "nsIWidget.h"
#include "nsIView.h"
#include "nsIRenderingContext.h"

#include "nsRenderingContextQT.h"

class nsDeviceContextQT : public DeviceContextImpl
{
public:
    nsDeviceContextQT();
    virtual ~nsDeviceContextQT();

    NS_DECL_ISUPPORTS

    NS_IMETHOD  Init(nsNativeWidget aNativeWidget);

    NS_IMETHOD  CreateRenderingContext(nsIRenderingContext *&aContext);
    NS_IMETHOD  SupportsNativeWidgets(PRBool &aSupportsWidgets);

    NS_IMETHOD  GetScrollBarDimensions(float &aWidth, float &aHeight) const;
    NS_IMETHOD  GetSystemAttribute(nsSystemAttrID anID, 
                                   SystemAttrStruct * aInfo) const;

    //get a low level drawing surface for rendering. the rendering context
    //that is passed in is used to create the drawing surface if there isn't
    //already one in the device context. the drawing surface is then cached
    //in the device context for re-use.

    NS_IMETHOD GetDrawingSurface(nsIRenderingContext &aContext, 
                                 nsDrawingSurface &aSurface);

    NS_IMETHOD ConvertPixel(nscolor aColor, PRUint32 & aPixel);
    NS_IMETHOD CheckFontExistence(const nsString& aFontName);

    NS_IMETHOD GetDeviceSurfaceDimensions(PRInt32 &aWidth, PRInt32 &aHeight);

    NS_IMETHOD GetDeviceContextFor(nsIDeviceContextSpec *aDevice,
                                   nsIDeviceContext *&aContext);

    NS_IMETHOD BeginDocument(void);
    NS_IMETHOD EndDocument(void);

    NS_IMETHOD BeginPage(void);
    NS_IMETHOD EndPage(void);

    // Overridden DeviceContextImpl functions.
    NS_IMETHOD GetDepth(PRUint32& aDepth);
    NS_IMETHOD GetILColorSpace(IL_ColorSpace*& aColorSpace);

private:
    PRUint32      mDepth;
    PRBool        mWriteable;
    nsPaletteInfo mPaletteInfo;
    PRUint32      mNumCells;
    PRInt16       mScrollbarHeight;
    PRInt16       mScrollbarWidth;
    PRInt16       mWindowBorderWidth;
    PRInt16       mWindowBorderHeight;
    QWidget *     mWidget;    
};

#endif /* nsDeviceContextQT_h___ */

