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lightning-sunbird  0.9+nobinonly
nsIBlender.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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00015  * The Original Code is mozilla.org code.
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00024  * Alternatively, the contents of this file may be used under the terms of
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00037 
00038 #ifndef nsIBlender_h___
00039 #define nsIBlender_h___
00040 
00041 #include "nscore.h"
00042 #include "nsISupports.h"
00043 #include "nsIRenderingContext.h"
00044 
00045 // IID for the nsIBlender interface
00046 #define NS_IBLENDER_IID    \
00047 { 0xbdb4b5b0, 0xf0db, 0x11d1, \
00048 { 0xa8, 0x2a, 0x00, 0x40, 0x95, 0x9a, 0x28, 0xc9 } }
00049 
00050 //----------------------------------------------------------------------
00051 
00052 // Blender interface
00053 class nsIBlender : public nsISupports
00054 {
00055 public:
00056   NS_DEFINE_STATIC_IID_ACCESSOR(NS_IBLENDER_IID)
00057 
00058   
00064   NS_IMETHOD Init(nsIDeviceContext *aContext) = 0;
00065 
00088   NS_IMETHOD Blend(PRInt32 aSX, PRInt32 aSY, PRInt32 aWidth, PRInt32 aHeight,nsIDrawingSurface* aSrc,
00089                    nsIDrawingSurface* aDest, PRInt32 aDX, PRInt32 aDY, float aSrcOpacity,
00090                    nsIDrawingSurface* aSecondSrc = nsnull, nscolor aSrcBackColor = NS_RGB(0, 0, 0),
00091                    nscolor aSecondSrcBackColor = NS_RGB(0, 0, 0)) = 0;
00092 
00093   NS_IMETHOD Blend(PRInt32 aSX, PRInt32 aSY, PRInt32 aWidth, PRInt32 aHeight, nsIRenderingContext *aSrc,
00094                    nsIRenderingContext *aDest, PRInt32 aDX, PRInt32 aDY, float aSrcOpacity,
00095                    nsIRenderingContext *aSecondSrc = nsnull, nscolor aSrcBackColor = NS_RGB(0, 0, 0),
00096                    nscolor aSecondSrcBackColor = NS_RGB(0, 0, 0)) = 0;
00097 
00104   NS_IMETHOD GetAlphas(const nsRect& aRect, nsIDrawingSurface* aBlack,
00105                        nsIDrawingSurface* aWhite, PRUint8** aAlphas) = 0;
00106 };
00107 
00108 #endif