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nsRegionGTK.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
00002  *
00003  * ***** BEGIN LICENSE BLOCK *****
00004  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00005  *
00006  * The contents of this file are subject to the Mozilla Public License Version
00007  * 1.1 (the "License"); you may not use this file except in compliance with
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00009  * http://www.mozilla.org/MPL/
00010  *
00011  * Software distributed under the License is distributed on an "AS IS" basis,
00012  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00013  * for the specific language governing rights and limitations under the
00014  * License.
00015  *
00016  * The Original Code is mozilla.org code.
00017  *
00018  * The Initial Developer of the Original Code is
00019  * Stuart Parmenter.
00020  * Portions created by the Initial Developer are Copyright (C) 1998-2000
00021  * the Initial Developer. All Rights Reserved.
00022  *
00023  * Contributor(s):
00024  *   Stuart Parmenter <pavlov@netscape.com>
00025  *
00026  * Alternatively, the contents of this file may be used under the terms of
00027  * either of the GNU General Public License Version 2 or later (the "GPL"),
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00038  * ***** END LICENSE BLOCK ***** */
00039 
00040 #ifndef nsRegionGTK_h___
00041 #define nsRegionGTK_h___
00042 
00043 #include "nsIRegion.h"
00044 
00045 #include <gdk/gdk.h>
00046 
00047 class nsRegionGTK : public nsIRegion
00048 {
00049 public:
00050   nsRegionGTK();
00051   virtual ~nsRegionGTK();
00052 
00053   NS_DECL_ISUPPORTS
00054 
00055   virtual nsresult Init();
00056 #ifdef MOZ_WIDGET_GTK
00057   static void Shutdown();
00058 #endif
00059 
00060   virtual void SetTo(const nsIRegion &aRegion);
00061   virtual void SetTo(PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00062   virtual void Intersect(const nsIRegion &aRegion);
00063   virtual void Intersect(PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00064   virtual void Union(const nsIRegion &aRegion);
00065   virtual void Union(PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00066   virtual void Subtract(const nsIRegion &aRegion);
00067   virtual void Subtract(PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00068   virtual PRBool IsEmpty(void);
00069   virtual PRBool IsEqual(const nsIRegion &aRegion);
00070   virtual void GetBoundingBox(PRInt32 *aX, PRInt32 *aY, PRInt32 *aWidth, PRInt32 *aHeight);
00071   virtual void Offset(PRInt32 aXOffset, PRInt32 aYOffset);
00072   virtual PRBool ContainsRect(PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight);
00073   NS_IMETHOD GetRects(nsRegionRectSet **aRects);
00074   NS_IMETHOD FreeRects(nsRegionRectSet *aRects);
00075   NS_IMETHOD GetNativeRegion(void *&aRegion) const;
00076   NS_IMETHOD GetRegionComplexity(nsRegionComplexity &aComplexity) const;
00077   NS_IMETHOD GetNumRects(PRUint32 *aRects) const;
00078 
00079 protected:
00080 #ifdef MOZ_WIDGET_GTK
00081   GdkRegion *gdk_region_copy(GdkRegion *region);
00082   GdkRegion *gdk_region_from_rect(PRInt32 aX, PRInt32 aY,
00083                                   PRInt32 aWidth, PRInt32 aHeight);
00084 
00085 private:
00086   inline GdkRegion *GetCopyRegion();
00087   inline void SetRegionEmpty();
00088 
00089   static GdkRegion *copyRegion;
00090 #endif
00091 private:
00092 
00093   GdkRegion *mRegion;
00094 };
00095 
00096 #endif  // nsRegionGTK_h___