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nsCairoRegion.h
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00001 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
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00015  * The Original Code is mozilla.org code.
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00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *   Stuart Parmenter <pavlov@pavlov.net>
00024  *   Joe Hewitt <hewitt@netscape.com>
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00026  * Alternatively, the contents of this file may be used under the terms of
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00039 
00040 #ifndef NSCAIROREGION__H__
00041 #define NSCAIROREGION__H__
00042 
00043 #include "nsIRegion.h"
00044 #include "nsRegion.h"
00045 
00046 class nsCairoRegion : public nsIRegion
00047 {
00048 public:
00049     nsCairoRegion();
00050 
00051     NS_DECL_ISUPPORTS
00052 
00053     // nsIRegion
00054     nsresult Init (void);
00055     void SetTo (const nsIRegion &aRegion);
00056     void SetTo (PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00057     void Intersect (const nsIRegion &aRegion);
00058     void Intersect (PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00059     void Union (const nsIRegion &aRegion);
00060     void Union (PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00061     void Subtract (const nsIRegion &aRegion);
00062     void Subtract (PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00063     PRBool IsEmpty (void);
00064     PRBool IsEqual (const nsIRegion &aRegion);
00065     void GetBoundingBox (PRInt32 *aX, PRInt32 *aY, PRInt32 *aWidth, PRInt32 *aHeight);
00066     void Offset (PRInt32 aXOffset, PRInt32 aYOffset);
00067     PRBool ContainsRect (PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00068     NS_IMETHOD GetRects (nsRegionRectSet **aRects);
00069     NS_IMETHOD FreeRects (nsRegionRectSet *aRects);
00070     NS_IMETHOD GetNativeRegion (void *&aRegion) const;
00071     NS_IMETHOD GetRegionComplexity (nsRegionComplexity &aComplexity) const;
00072     NS_IMETHOD GetNumRects (PRUint32 *aRects) const;
00073 
00074 protected:
00075     nsRegion mRegion;
00076 };
00077 
00078 #endif