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nsUnicodeFontMappingMac.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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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 nsUnicodeFontMappingMac_h__
00039 #define nsUnicodeFontMappingMac_h__
00040 
00041 #include "nsUnicodeBlock.h"
00042 #include "nsIDeviceContext.h"
00043 #include "nsFont.h"
00044 #include "nsVoidArray.h"
00045  
00046 #define BAD_FONT_NUM -1
00047 #define IGNORABLE_FONT_NUM -2
00048 #define BAD_SCRIPT 0x7f
00049 
00050 class nsUnicodeMappingUtil;
00051 class nsUnicodeFontMappingCache;
00052 
00053 class nsUnicodeFontMappingMac {
00054 public:
00055    nsUnicodeFontMappingMac(nsFont* aFont, nsIDeviceContext *aDeviceContext, 
00056               const nsString& aLangGroup, const nsString& aLANG);
00057    ~nsUnicodeFontMappingMac();
00058               
00059    short GetFontID(PRUnichar aChar);
00060    inline const short *GetScriptFallbackFonts() {
00061               return mScriptFallbackFontIDs;
00062    }
00063    PRBool Equals(const nsUnicodeFontMappingMac& anther);
00064    
00065    PRBool ConvertUnicodeToGlyphs(short aFontNum, const PRUnichar* aString,
00066        ByteCount aStringLength, char *aBuffer, ByteCount aBufferLength, 
00067        ByteCount& oActualLength, ByteCount& oBytesRead, OptionBits opts);
00068 
00069    static PRBool FontEnumCallback(const nsString& aFamily, PRBool aGeneric, void *aData);
00070 
00071 protected:
00072    PRBool ScriptMapInitComplete();
00073    void InitByFontFamily(nsFont* aFont, nsIDeviceContext *aDeviceContext);
00074    void InitByLANG(const nsString& aLANG);
00075    void InitByLangGroup(const nsString& aLangGroup);
00076    void InitDefaultScriptFonts();
00077    void processOneLangRegion(const char* aLanguage, const char* aRegion );
00078    nsUnicodeBlock GetBlock(PRUnichar aChar);
00079 private:
00080    
00081    PRInt8 mPrivBlockToScript [kUnicodeBlockVarScriptMax] ;
00082    short  mScriptFallbackFontIDs [smPseudoTotalScripts] ;
00083    nsAutoVoidArray mFontList;
00084 
00085    static nsUnicodeMappingUtil* gUtil;
00086 };
00087 
00088 #endif /* nsUnicodeFontMappingMac_h__ */