/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * 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 nsRenderingContextWin_h___
#define nsRenderingContextWin_h___

#include "nsIRenderingContext.h"
#include "nsUnitConversion.h"
#include "nsFont.h"
#include "nsFontMetricsWin.h"
#include "nsPoint.h"
#include "nsString.h"
#include "nsCRT.h"
#include "nsTransform2D.h"
#include "nsIViewManager.h"
#include "nsIWidget.h"
#include "nsRect.h"
#include "nsImageWin.h"
#include "nsIDeviceContext.h"
#include "nsVoidArray.h"
#include "nsIRenderingContextWin.h"
#include "nsDrawingSurfaceWin.h"
#include "nsRenderingContextImpl.h"

class GraphicsState;
class nsDrawingSurfaceWin;

class nsRenderingContextWin : public nsRenderingContextImpl,
                              nsIRenderingContextWin
{
public:
  nsRenderingContextWin();

  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 &aClipState);

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

  NS_IMETHOD SetClipRect(const nsRect& aRect, nsClipCombine aCombine, PRBool &aCilpState);
  NS_IMETHOD GetClipRect(nsRect &aRect, PRBool &aClipState);
  NS_IMETHOD SetClipRegion(const nsIRegion& aRegion, nsClipCombine aCombine, PRBool &aClipState);
  NS_IMETHOD CopyClipRegion(nsIRegion &aRegion);
  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 DrawStdLine(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 SetPenMode(nsPenMode aPenMode);
  NS_IMETHOD GetPenMode(nsPenMode &aPenMode);

  /** ---------------------------------------------------
   *  See documentation in nsIRenderingContext.h
   *	@update 05/01/00 dwc
   */
  NS_IMETHOD FillStdPolygon(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 GetTextDimensions(const char* aString, PRUint32 aLength,
                               nsTextDimensions& aDimensions);
  NS_IMETHOD GetTextDimensions(const PRUnichar *aString, PRUint32 aLength,
                               nsTextDimensions& aDimensions, PRInt32 *aFontID);
  NS_IMETHOD GetTextDimensions(const char*       aString,
                               PRInt32           aLength,
                               PRInt32           aAvailWidth,
                               PRInt32*          aBreaks,
                               PRInt32           aNumBreaks,
                               nsTextDimensions& aDimensions,
                               PRInt32&          aNumCharsFit,
                               nsTextDimensions& aLastWordDimensions,
                               PRInt32*          aFontID = nsnull);
  NS_IMETHOD GetTextDimensions(const PRUnichar*  aString,
                               PRInt32           aLength,
                               PRInt32           aAvailWidth,
                               PRInt32*          aBreaks,
                               PRInt32           aNumBreaks,
                               nsTextDimensions& aDimensions,
                               PRInt32&          aNumCharsFit,
                               nsTextDimensions& aLastWordDimensions,
                               PRInt32*          aFontID = nsnull);

  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);

  // nsIRenderingContextWin
  NS_IMETHOD CreateDrawingSurface(HDC aDC, nsDrawingSurface &aSurface);

  NS_IMETHOD GetBackbuffer(const nsRect &aRequestedSize, const nsRect &aMaxSize, nsDrawingSurface &aBackbuffer);
 
  NS_IMETHOD ReleaseBackbuffer(void);

#ifdef MOZ_MATHML
  NS_IMETHOD
  GetBoundingMetrics(const char*        aString,
                     PRUint32           aLength,
                     nsBoundingMetrics& aBoundingMetrics);

  NS_IMETHOD
  GetBoundingMetrics(const PRUnichar*   aString,
                     PRUint32           aLength,
                     nsBoundingMetrics& aBoundingMetrics,
                     PRInt32*           aFontID);
#endif

#ifdef IBMBIDI
  NS_IMETHOD SetRightToLeftText(PRBool aIsRTL);
#endif // IBMBIDI

protected:
  void SetupFontAndColor(void);

  ~nsRenderingContextWin();

  /** ---------------------------------------------------
   *  See documentation in nsIRenderingContextImpl.h
   *	@update 4/01/00 dwc
   */
  virtual PRBool CanTile(nscoord aWidth,nscoord aHeight);



private:
   // ConditionRect is used to fix a coordinate overflow problem under WIN95. 
  void ConditionRect(nsRect& aSrcRect, RECT& aDestRect);

  nsresult CommonInit(void);
  nsresult SetupDC(HDC aOldDC, HDC aNewDC);
  HBRUSH SetupSolidBrush(void);
  HPEN SetupPen(void);
  HPEN SetupSolidPen(void);
  HPEN SetupDashedPen(void);
  HPEN SetupDottedPen(void);
  void PushClipState(void);
#ifdef IBMBIDI
  void InitBidiInfo(void);
#endif // IBMBIDI

friend class nsNativeThemeWin;

protected:
  nscolor					  mCurrentColor;
  nsIFontMetrics	  *mFontMetrics;
  HDC               mDC;
  HDC               mMainDC;
  nsDrawingSurfaceWin *mSurface;
  nsDrawingSurfaceWin *mMainSurface;
  COLORREF          mColor;
  nsIWidget         *mDCOwner;
//  int               mOldMapMode;
  nsIDeviceContext  *mContext;
  float             mP2T;
  HRGN              mClipRegion;
  //default objects
  HBRUSH            mOrigSolidBrush;
  HFONT             mOrigFont;
  HPEN              mOrigSolidPen;
  HPALETTE          mOrigPalette;
  //state management
  GraphicsState     *mStates;
  nsVoidArray       *mStateCache;
  nscolor           mCurrBrushColor;
  HBRUSH            mCurrBrush;
  nsIFontMetrics    *mCurrFontMetrics;
  HFONT             mCurrFont;
  nscolor           mCurrPenColor;
  HPEN              mCurrPen;
  HPEN              mNullPen;
  PRUint8           *mGammaTable;
  nscolor           mCurrTextColor;
  nsLineStyle       mCurrLineStyle;

#ifdef NS_DEBUG
  PRBool            mInitialized;
#endif
#ifdef IBMBIDI
  PRBool            mRightToLeftText;
#endif // IBMBIDI
};

#endif /* nsRenderingContextWin_h___ */
