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nsRegionWin.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
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00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
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00037 
00038 #ifndef nsRegionWin_h___
00039 #define nsRegionWin_h___
00040 
00041 #include "nsIRegion.h"
00042 #include "windows.h"
00043 
00044 class nsRegionWin : public nsIRegion
00045 {
00046 public:
00047   nsRegionWin();
00048 
00049   NS_DECL_ISUPPORTS
00050 
00051   virtual nsresult Init();
00052 
00053   virtual void SetTo(const nsIRegion &aRegion);
00054   virtual void SetTo(PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00055   virtual void Intersect(const nsIRegion &aRegion);
00056   virtual void Intersect(PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00057   virtual void Union(const nsIRegion &aRegion);
00058   virtual void Union(PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00059   virtual void Subtract(const nsIRegion &aRegion);
00060   virtual void Subtract(PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00061   virtual PRBool IsEmpty(void);
00062   virtual PRBool IsEqual(const nsIRegion &aRegion);
00063   virtual void GetBoundingBox(PRInt32 *aX, PRInt32 *aY, PRInt32 *aWidth, PRInt32 *aHeight);
00064   virtual void Offset(PRInt32 aXOffset, PRInt32 aYOffset);
00065   virtual PRBool ContainsRect(PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00066   NS_IMETHOD GetRects(nsRegionRectSet **aRects);
00067   NS_IMETHOD FreeRects(nsRegionRectSet *aRects);
00068   NS_IMETHOD GetNativeRegion(void *&aRegion) const;
00069   NS_IMETHOD GetRegionComplexity(nsRegionComplexity &aComplexity) const;
00070 
00071   NS_IMETHOD GetNumRects(PRUint32 *aRects) const { *aRects = 0; return NS_OK; }
00072 private:
00073   ~nsRegionWin();
00074 
00075   LPRGNDATA mData;
00076   PRUint32  mDataSize;
00077 
00078 public:
00079   //public so the rendering context can poke these... shoot me. MMP
00080   HRGN      mRegion;
00081   int       mRegionType;
00082 };
00083 
00084 #endif  // nsRegionWin_h___