/* -*- 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 nsRenderingContextQT_h___
#define nsRenderingContextQT_h___

#include "nsIRenderingContext.h"
#include "nsUnitConversion.h"
#include "nsFont.h"
#include "nsIFontMetrics.h"
#include "nsPoint.h"
#include "nsString.h"
#include "nsCRT.h"
#include "nsTransform2D.h"
#include "nsIViewManager.h"
#include "nsIWidget.h"
#include "nsRect.h"
#include "nsImageQT.h"
#include "nsIDeviceContext.h"
#include "nsVoidArray.h"

#include "nsRegionQT.h"
#include "nsDrawingSurfaceQT.h"
#include "prlog.h"

extern PRLogModuleInfo * QtGfxLM;

class nsRenderingContextQT : public nsIRenderingContext
{
public:
    nsRenderingContextQT();
    virtual ~nsRenderingContextQT();

    NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW

    NS_DECL_ISUPPORTS

    NS_IMETHOD Init(nsIDeviceContext* aContext, nsIWidget *aWindow);
    NS_IMETHOD Init(nsIDeviceContext* aContext, nsDrawingSurface aSurface);

    NS_IMETHOD Reset(void);

    NS_IMETHOD GetDeviceContext(nsIDeviceContext *&aContext);

    NS_IMETHOD LockDrawingSurface(PRInt32 aX, 
                                  PRInt32 aY, 
                                  PRUint32 aWidth, 
                                  PRUint32 aHeight,
                                  void **aBits, 
                                  PRInt32 *aStride, 
                                  PRInt32 *aWidthBytes,
                                  PRUint32 aFlags);
    NS_IMETHOD UnlockDrawingSurface(void);

    NS_IMETHOD SelectOffScreenDrawingSurface(nsDrawingSurface aSurface);
    NS_IMETHOD GetDrawingSurface(nsDrawingSurface *aSurface);
    NS_IMETHOD GetHints(PRUint32& aResult);

    NS_IMETHOD PushState(void);
    NS_IMETHOD PopState(PRBool &aClipEmpty);

    NS_IMETHOD IsVisibleRect(const nsRect& aRect, PRBool &aVisible);

    NS_IMETHOD SetClipRect(const nsRect& aRect, 
                           nsClipCombine aCombine, 
                           PRBool &aClipEmpty);
    NS_IMETHOD CopyClipRegion(nsIRegion &aRegion);
    NS_IMETHOD GetClipRect(nsRect &aRect, PRBool &aClipValid);
    NS_IMETHOD SetClipRegion(const nsIRegion& aRegion, 
                             nsClipCombine aCombine, 
                             PRBool &aClipEmpty);
    NS_IMETHOD GetClipRegion(nsIRegion **aRegion);

    NS_IMETHOD SetLineStyle(nsLineStyle aLineStyle);
    NS_IMETHOD GetLineStyle(nsLineStyle &aLineStyle);

    NS_IMETHOD SetColor(nscolor aColor);
    NS_IMETHOD GetColor(nscolor &aColor) const;

    NS_IMETHOD SetFont(const nsFont& aFont);
    NS_IMETHOD SetFont(nsIFontMetrics *aFontMetrics);

    NS_IMETHOD GetFontMetrics(nsIFontMetrics *&aFontMetrics);

    NS_IMETHOD Translate(nscoord aX, nscoord aY);
    NS_IMETHOD Scale(float aSx, float aSy);
    NS_IMETHOD GetCurrentTransform(nsTransform2D *&aTransform);

    NS_IMETHOD CreateDrawingSurface(nsRect *aBounds, 
                                    PRUint32 aSurfFlags, 
                                    nsDrawingSurface &aSurface);
    NS_IMETHOD DestroyDrawingSurface(nsDrawingSurface aDS);

    NS_IMETHOD DrawLine(nscoord aX0, nscoord aY0, nscoord aX1, nscoord aY1);
    NS_IMETHOD DrawPolyline(const nsPoint aPoints[], PRInt32 aNumPoints);

    NS_IMETHOD DrawRect(const nsRect& aRect);
    NS_IMETHOD DrawRect(nscoord aX, 
                        nscoord aY, 
                        nscoord aWidth, 
                        nscoord aHeight);
    NS_IMETHOD FillRect(const nsRect& aRect);
    NS_IMETHOD FillRect(nscoord aX, 
                        nscoord aY, 
                        nscoord aWidth, 
                        nscoord aHeight);
    NS_IMETHOD InvertRect(const nsRect& aRect);
    NS_IMETHOD InvertRect(nscoord aX, 
                          nscoord aY, 
                          nscoord aWidth, 
                          nscoord aHeight);

    NS_IMETHOD DrawPolygon(const nsPoint aPoints[], PRInt32 aNumPoints);
    NS_IMETHOD FillPolygon(const nsPoint aPoints[], PRInt32 aNumPoints);

    NS_IMETHOD DrawEllipse(const nsRect& aRect);
    NS_IMETHOD DrawEllipse(nscoord aX, 
                           nscoord aY, 
                           nscoord aWidth, 
                           nscoord aHeight);
    NS_IMETHOD FillEllipse(const nsRect& aRect);
    NS_IMETHOD FillEllipse(nscoord aX, 
                           nscoord aY, 
                           nscoord aWidth, 
                           nscoord aHeight);

    NS_IMETHOD DrawArc(const nsRect& aRect,
                       float aStartAngle, 
                       float aEndAngle);
    NS_IMETHOD DrawArc(nscoord aX, 
                       nscoord aY, 
                       nscoord aWidth, 
                       nscoord aHeight,
                       float aStartAngle, 
                       float aEndAngle);
    NS_IMETHOD FillArc(const nsRect& aRect,
                       float aStartAngle, 
                       float aEndAngle);
    NS_IMETHOD FillArc(nscoord aX, 
                       nscoord aY, 
                       nscoord aWidth, 
                       nscoord aHeight,
                       float aStartAngle, 
                       float aEndAngle);

    NS_IMETHOD GetWidth(char aC, nscoord &aWidth);
    NS_IMETHOD GetWidth(PRUnichar aC, 
                        nscoord &aWidth,
                        PRInt32 *aFontID);
    NS_IMETHOD GetWidth(const nsString& aString, 
                        nscoord &aWidth,
                        PRInt32 *aFontID);
    NS_IMETHOD GetWidth(const char *aString, nscoord &aWidth);
    NS_IMETHOD GetWidth(const char *aString, 
                        PRUint32 aLength, 
                        nscoord &aWidth);
    NS_IMETHOD GetWidth(const PRUnichar *aString, 
                        PRUint32 aLength, 
                        nscoord &aWidth,
                        PRInt32 *aFontID);

    NS_IMETHOD DrawString(const char *aString, 
                          PRUint32 aLength,
                          nscoord aX, 
                          nscoord aY,
                          const nscoord* aSpacing);
    NS_IMETHOD DrawString(const PRUnichar *aString, 
                          PRUint32 aLength,
                          nscoord aX, 
                          nscoord aY,
                          PRInt32 aFontID,
                          const nscoord* aSpacing);
    NS_IMETHOD DrawString(const nsString& aString, 
                          nscoord aX, 
                          nscoord aY,
                          PRInt32 aFontID,
                          const nscoord* aSpacing);

    NS_IMETHOD DrawImage(nsIImage *aImage, nscoord aX, nscoord aY);
    NS_IMETHOD DrawImage(nsIImage *aImage, nscoord aX, nscoord aY,
                         nscoord aWidth, nscoord aHeight); 
    NS_IMETHOD DrawImage(nsIImage *aImage, const nsRect& aRect);
    NS_IMETHOD DrawImage(nsIImage *aImage, 
                         const nsRect& aSRect, 
                         const nsRect& aDRect);

    NS_IMETHOD CopyOffScreenBits(nsDrawingSurface aSrcSurf, 
                                 PRInt32 aSrcX, 
                                 PRInt32 aSrcY,
                                 const nsRect &aDestBounds, 
                                 PRUint32 aCopyFlags);

    NS_IMETHOD RetrieveCurrentNativeGraphicData(PRUint32 * ngd);

    //locals
    NS_IMETHOD CommonInit();

protected:
    nsDrawingSurfaceQT   * mOffscreenSurface;  
    nsDrawingSurfaceQT   * mSurface;
    nsIDeviceContext     * mContext;
    nsIFontMetrics       * mFontMetrics;
    nsRegionQT           * mRegion;
    nsTransform2D        * mTMatrix;
    float                  mP2T;

    // graphic state stack (GraphicsState)
    nsVoidArray          * mStateCache;

    nscolor                mCurrentColor;
    nsLineStyle            mCurrentLineStyle;

    QFont                * mCurrentFont;
    QFontMetrics         * mCurrentFontMetrics;
};

#endif /* nsRenderingContextQT_h___ */
