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lightning-sunbird  0.9+nobinonly
nsFontMetricsMac.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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00015  * The Original Code is mozilla.org code.
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00017  * The Initial Developer of the Original Code is
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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 nsFontMetricsMac_h__
00039 #define nsFontMetricsMac_h__
00040 
00041 #include <TextEdit.h>       // for TextStyle
00042 
00043 #include "nsIFontMetrics.h"
00044 #include "nsFont.h"
00045 #include "nsString.h"
00046 #include "nsUnitConversion.h"
00047 #include "nsIDeviceContext.h"
00048 #include "nsCRT.h"
00049 #include "nsIAtom.h"
00050 #include "nsCOMPtr.h"
00051 class nsUnicodeFontMappingMac;
00052 
00053 class nsFontMetricsMac : public nsIFontMetrics
00054 {
00055 public:
00056   nsFontMetricsMac();
00057   virtual ~nsFontMetricsMac();
00058 
00059   NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
00060 
00061   NS_DECL_ISUPPORTS
00062 
00063   NS_IMETHOD  Init(const nsFont& aFont, nsIAtom* aLangGroup, nsIDeviceContext* aContext);
00064   NS_IMETHOD  Destroy();
00065 
00066   NS_IMETHOD  GetXHeight(nscoord& aResult);
00067   NS_IMETHOD  GetSuperscriptOffset(nscoord& aResult);
00068   NS_IMETHOD  GetSubscriptOffset(nscoord& aResult);
00069   NS_IMETHOD  GetStrikeout(nscoord& aOffset, nscoord& aSize);
00070   NS_IMETHOD  GetUnderline(nscoord& aOffset, nscoord& aSize);
00071   NS_IMETHOD  GetHeight(nscoord &aHeight);
00072   NS_IMETHOD  GetNormalLineHeight(nscoord &aHeight);
00073   NS_IMETHOD  GetLeading(nscoord &aLeading);
00074   NS_IMETHOD  GetEmHeight(nscoord &aHeight);
00075   NS_IMETHOD  GetEmAscent(nscoord &aAscent);
00076   NS_IMETHOD  GetEmDescent(nscoord &aDescent);
00077   NS_IMETHOD  GetMaxHeight(nscoord &aHeight);
00078   NS_IMETHOD  GetMaxAscent(nscoord &aAscent);
00079   NS_IMETHOD  GetMaxDescent(nscoord &aDescent);
00080   NS_IMETHOD  GetMaxAdvance(nscoord &aAdvance);
00081   NS_IMETHOD  GetAveCharWidth(nscoord &aAveCharWidth);
00082   NS_IMETHOD  GetWidths(const nscoord *&aWidths);
00083   NS_IMETHOD  GetLangGroup(nsIAtom** aLangGroup);
00084   NS_IMETHOD  GetFontHandle(nsFontHandle& aHandle);
00085   NS_IMETHOD  GetSpaceWidth(nscoord& aSpaceCharWidth);
00086   virtual PRInt32 GetMaxStringLength();
00087 
00088   nsUnicodeFontMappingMac* GetUnicodeFontMapping();
00089        
00090 protected:
00091        void                        RealizeFont();
00092 
00093        short                                            mFontNum;
00094   nsUnicodeFontMappingMac *mFontMapping;
00095   nscoord           mEmHeight;
00096   nscoord           mEmAscent;
00097   nscoord           mEmDescent;
00098   nscoord           mMaxHeight;
00099   nscoord           mLeading;
00100   nscoord           mMaxAscent;
00101   nscoord           mMaxDescent;
00102   nscoord           mMaxAdvance;
00103   nscoord           mAveCharWidth;
00104   nscoord           mSpaceWidth;
00105   nscoord           mXHeight;
00106   PRInt32           mMaxStringLength;
00107   nsCOMPtr<nsIAtom> mLangGroup;
00108   nsIDeviceContext  *mContext;
00109 };
00110 
00111 #endif
00112 
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00114 
00115