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https://github.com/mozilla/gecko-dev.git
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bug 99010 - font changes. r=shanjian@netscape.com,kmcclusk@netscape.com, sr=waterson@netscape.com
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rbs%maths.uq.edu.au
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@ -45,23 +45,50 @@
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//#define ADD_GLYPH(map, g) (map)[(g) >> 3] |= (1 << ((g) & 7))
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#define ADD_GLYPH(map, g) SET_REPRESENTABLE(map, g)
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enum eFontType {
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eFontType_UNKNOWN = -1,
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eFontType_Unicode,
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eFontType_NonUnicode,
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};
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struct nsCharacterMap {
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PRUint8* mData;
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PRInt32 mLength;
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};
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struct nsGlobalFont
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{
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nsString name;
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LOGFONT logFont;
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PRUint32* map;
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FONTSIGNATURE signature;
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eFontType fonttype;
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PRUint32 flags;
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};
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// Bits used for nsGlobalFont.flags
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// If this bit is set, then the font is to be ignored
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#define NS_GLOBALFONT_SKIP 0x80000000L
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// If this bit is set, then the font is a TrueType font
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#define NS_GLOBALFONT_TRUETYPE 0x40000000L
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// If this bit is set, then the font is a Symbol font (SYMBOL_CHARSET)
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#define NS_GLOBALFONT_SYMBOL 0x20000000L
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class nsFontWin
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{
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public:
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NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
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nsFontWin(LOGFONT* aLogFont, HFONT aFont, PRUint32* aMap);
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virtual ~nsFontWin();
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NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
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virtual PRInt32 GetWidth(HDC aDC, const PRUnichar* aString,
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PRUint32 aLength) = 0;
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// XXX return width from DrawString
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virtual void DrawString(HDC aDC, PRInt32 aX, PRInt32 aY,
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const PRUnichar* aString, PRUint32 aLength) = 0;
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#ifdef MOZ_MATHML
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virtual nsresult
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GetBoundingMetrics(HDC aDC,
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@ -73,42 +100,50 @@ public:
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#endif // NS_DEBUG
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#endif
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char mName[LF_FACESIZE];
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HFONT mFont;
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PRUint32* mMap;
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char mName[LF_FACESIZE];
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HFONT mFont;
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PRUint32* mMap;
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#ifdef MOZ_MATHML
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nsCharacterMap* mCMAP;
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#endif
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nscoord mMaxAscent;
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nscoord mMaxDescent;
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};
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typedef struct nsGlobalFont
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{
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nsString* name;
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LOGFONT logFont;
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PRUint32* map;
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FONTSIGNATURE signature;
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int fonttype;
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PRUint32 flags;
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} nsGlobalFont;
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/**
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* nsFontSwitchCallback
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*
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* Font-switching callback function. Used by ResolveForwards() and
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* ResolveBackwards(). aFontSwitch points to a structure that gives
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* details about the current font needed to represent the current
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* substring. In particular, this struct contains a handler to the font
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* and some metrics of the font. These metrics may be different from
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* the metrics obtained via nsIFontMetrics.
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* Return PR_FALSE to stop the resolution of the remaining substrings.
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*/
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// Bits used for nsGlobalFont.flags
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// If this bit is set, then the font is to be ignored
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#define NS_GLOBALFONT_SKIP 0x80000000L
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// If this bit is set, then the font is a TrueType font
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#define NS_GLOBALFONT_TRUETYPE 0x40000000L
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// If this bit is set, then the font is a Symbol font (SYMBOL_CHARSET)
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#define NS_GLOBALFONT_SYMBOL 0x20000000L
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struct nsFontSwitch {
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// Simple wrapper on top of nsFontWin for the moment
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// Could hold other attributes of the font
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nsFontWin* mFontWin;
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};
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typedef PRBool (*PR_CALLBACK nsFontSwitchCallback)
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(const nsFontSwitch* aFontSwitch,
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const PRUnichar* aSubstring,
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PRUint32 aSubstringLength,
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void* aData);
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class nsFontMetricsWin : public nsIFontMetrics
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{
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public:
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NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
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NS_DECL_ISUPPORTS
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nsFontMetricsWin();
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virtual ~nsFontMetricsWin();
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NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
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NS_DECL_ISUPPORTS
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NS_IMETHOD Init(const nsFont& aFont, nsIAtom* aLangGroup,
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nsIDeviceContext* aContext);
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NS_IMETHOD Destroy();
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@ -118,7 +153,6 @@ public:
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NS_IMETHOD GetSubscriptOffset(nscoord& aResult);
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NS_IMETHOD GetStrikeout(nscoord& aOffset, nscoord& aSize);
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NS_IMETHOD GetUnderline(nscoord& aOffset, nscoord& aSize);
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NS_IMETHOD GetHeight(nscoord &aHeight);
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NS_IMETHOD GetNormalLineHeight(nscoord &aHeight);
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NS_IMETHOD GetLeading(nscoord &aLeading);
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@ -133,86 +167,102 @@ public:
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NS_IMETHOD GetLangGroup(nsIAtom** aLangGroup);
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NS_IMETHOD GetFontHandle(nsFontHandle &aHandle);
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NS_IMETHOD GetAveCharWidth(nscoord &aAveCharWidth);
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virtual nsresult GetSpaceWidth(nscoord &aSpaceWidth);
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virtual nsFontWin* FindGlobalFont(HDC aDC, PRUnichar aChar);
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virtual nsFontWin* FindGenericFont(HDC aDC, PRUnichar aChar);
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virtual nsFontWin* FindLocalFont(HDC aDC, PRUnichar aChar);
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virtual nsFontWin* FindUserDefinedFont(HDC aDC, PRUnichar aChar);
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nsFontWin* FindFont(HDC aDC, PRUnichar aChar);
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virtual nsFontWin* LoadGenericFont(HDC aDC, PRUnichar aChar, char** aName);
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virtual nsFontWin* LoadFont(HDC aDC, nsString* aName);
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virtual nsFontWin* LoadSubstituteFont(HDC aDC, nsString* aName);
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virtual nsresult
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ResolveForwards(HDC aDC,
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const PRUnichar* aString,
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PRUint32 aLength,
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nsFontSwitchCallback aFunc,
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void* aData);
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virtual nsresult
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ResolveBackwards(HDC aDC,
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const PRUnichar* aString,
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PRUint32 aLength,
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nsFontSwitchCallback aFunc,
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void* aData);
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nsFontWin* FindFont(HDC aDC, PRUnichar aChar);
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virtual nsFontWin* FindUserDefinedFont(HDC aDC, PRUnichar aChar);
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virtual nsFontWin* FindLocalFont(HDC aDC, PRUnichar aChar);
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virtual nsFontWin* FindGenericFont(HDC aDC, PRUnichar aChar);
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virtual nsFontWin* FindGlobalFont(HDC aDC, PRUnichar aChar);
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virtual nsFontWin* FindSubstituteFont(HDC aDC, PRUnichar aChar);
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virtual nsFontWin* LoadFont(HDC aDC, nsString* aName);
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virtual nsFontWin* LoadGenericFont(HDC aDC, PRUnichar aChar, nsString* aName);
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virtual nsFontWin* LoadGlobalFont(HDC aDC, nsGlobalFont* aGlobalFontItem);
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virtual nsFontWin* LoadSubstituteFont(HDC aDC, nsString* aName);
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static int SameAsPreviousMap(int aIndex);
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nsFontWin **mLoadedFonts;
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PRUint16 mLoadedFontsAlloc;
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PRUint16 mLoadedFontsCount;
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PRInt32 mIndexOfSubstituteFont;
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virtual nsFontWin* GetFontFor(HFONT aHFONT);
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nsCOMPtr<nsIAtom> mLangGroup;
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nsStringArray mFonts;
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PRUint16 mFontsIndex;
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nsVoidArray mFontIsGeneric;
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nsVoidArray mLoadedFonts;
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nsFontWin *mSubstituteFont;
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nsAutoString mDefaultFont;
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nsString *mGeneric;
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nsCOMPtr<nsIAtom> mLangGroup;
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nsAutoString mUserDefined;
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PRUint16 mGenericIndex;
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nsString mGeneric;
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PRUint8 mTriedAllGenerics;
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PRUint8 mIsUserDefined;
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nsString mUserDefined;
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nscoord mSpaceWidth;
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PRBool mTriedAllGenerics;
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PRBool mIsUserDefined;
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static PRUint32* gEmptyMap;
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static PLHashTable* gFontMaps;
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static nsGlobalFont* gGlobalFonts;
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static int gGlobalFontsCount;
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static PLHashTable* gFamilyNames;
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static PLHashTable* gFontWeights;
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static nsVoidArray* gGlobalFonts;
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static nsGlobalFont* InitializeGlobalFonts(HDC aDC);
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static nsVoidArray* InitializeGlobalFonts(HDC aDC);
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static void SetFontWeight(PRInt32 aWeight, PRUint16* aWeightTable);
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static PRBool IsFontWeightAvailable(PRInt32 aWeight, PRUint16 aWeightTable);
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static PRUint32* GetCMAP(HDC aDC, const char* aShortName, int* aFontType, PRUint8* aCharset);
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static PRUint32* GetCMAP(HDC aDC, const char* aShortName, eFontType* aFontType, PRUint8* aCharset);
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static int SameAsPreviousMap(int aIndex);
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// This function creates a possibly adjusted font
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HFONT CreateFontHandle(HDC aDC, LOGFONT* aLogFont);
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void InitMetricsFor(HDC aDC, nsFontWin* aFontWin);
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protected:
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// @description Font Weights
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// Each available font weight is stored as as single bit inside a PRUint16.
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// e.g. The binary value 0000000000001000 indcates font weight 400 is available.
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// while the binary value 0000000000001001 indicates both font weight 100 and 400 are available
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// The font weights which will be represented include {100, 200, 300, 400, 500, 600, 700, 800, 900}
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// The font weight specified in the mFont->weight may include values which are not an even multiple of 100.
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// If so, the font weight mod 100 indicates the number steps to lighten are make bolder.
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// This corresponds to the CSS lighter and bolder property values. If bolder is applied twice to the font which has
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// a font weight of 400 then the mFont->weight will contain the value 402.
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// If lighter is applied twice to a font of weight 400 then the mFont->weight will contain the value 398.
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// Only nine steps of bolder or lighter are allowed by the CSS XPCODE.
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// The font weight table is used in conjuction with the mFont->weight to determine
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// what font weight to pass in the LOGFONT structure.
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// Each available font weight is stored as as single bit inside a PRUint16.
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// e.g. The binary value 0000000000001000 indcates font weight 400 is available.
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// while the binary value 0000000000001001 indicates both font weight 100 and 400 are available
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// The font weights which will be represented include {100, 200, 300, 400, 500, 600, 700, 800, 900}
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// The font weight specified in the mFont->weight may include values which are not an even multiple of 100.
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// If so, the font weight mod 100 indicates the number steps to lighten are make bolder.
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// This corresponds to the CSS lighter and bolder property values. If bolder is applied twice to the font which has
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// a font weight of 400 then the mFont->weight will contain the value 402.
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// If lighter is applied twice to a font of weight 400 then the mFont->weight will contain the value 398.
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// Only nine steps of bolder or lighter are allowed by the CSS XPCODE.
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// The font weight table is used in conjuction with the mFont->weight to determine
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// what font weight to pass in the LOGFONT structure.
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// Utility methods for managing font weights.
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// Utility methods for managing font weights.
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PRUint16 LookForFontWeightTable(HDC aDc, nsString* aName);
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PRInt32 GetBolderWeight(PRInt32 aWeight, PRInt32 aDistance, PRUint16 aWeightTable);
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PRInt32 GetLighterWeight(PRInt32 aWeight, PRInt32 aDistance, PRUint16 aWeightTable);
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PRInt32 GetFontWeight(PRInt32 aWeight, PRUint16 aWeightTable);
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PRInt32 GetClosestWeight(PRInt32 aWeight, PRUint16 aWeightTable);
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PRUint16 GetFontWeightTable(HDC aDC, nsString* aFontName);
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void FillLogFont(LOGFONT* aLogFont, PRInt32 aWeight);
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nsresult RealizeFont();
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nsDeviceContextWin *mDeviceContext;
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nsFont *mFont;
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nsresult RealizeFont();
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void FillLogFont(LOGFONT* aLogFont, PRInt32 aWeight,
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PRBool aSizeOnly=PR_FALSE, PRBool aSkipZoom=PR_FALSE);
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static PLHashTable* InitializeFamilyNames(void);
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nsDeviceContextWin *mDeviceContext;
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nsFont mFont;
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HFONT mFontHandle;
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nscoord mLeading;
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nscoord mEmHeight;
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nscoord mEmAscent;
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@ -229,9 +279,7 @@ protected:
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nscoord mStrikeoutOffset;
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nscoord mUnderlineSize;
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nscoord mUnderlineOffset;
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HFONT mFontHandle;
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static PLHashTable* InitializeFamilyNames(void);
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nscoord mSpaceWidth;
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};
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@ -247,12 +295,14 @@ public:
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// The following is a workaround for a Japanse Windows 95 problem.
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class nsFontWinA;
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class nsFontMetricsWinA;
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class nsFontSubset : public nsFontWin
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{
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public:
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nsFontSubset();
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virtual ~nsFontSubset();
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virtual PRInt32 GetWidth(HDC aDC, const PRUnichar* aString,
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PRUint32 aLength);
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virtual void DrawString(HDC aDC, PRInt32 aX, PRInt32 aY,
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@ -268,9 +318,13 @@ public:
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#endif // NS_DEBUG
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#endif
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int Load(nsFontWinA* aFont);
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int Load(HDC aDC, nsFontMetricsWinA* aFontMetricsWin, nsFontWinA* aFont);
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BYTE mCharSet;
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// convert a Unicode string to ANSI within our codepage
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virtual void Convert(const PRUnichar* aString, PRUint32 aLength,
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char** aResult /*IN/OUT*/, int* aResultLength /*IN/OUT*/);
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BYTE mCharset;
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PRUint16 mCodePage;
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};
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@ -279,6 +333,7 @@ class nsFontWinA : public nsFontWin
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public:
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nsFontWinA(LOGFONT* aLogFont, HFONT aFont, PRUint32* aMap);
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virtual ~nsFontWinA();
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virtual PRInt32 GetWidth(HDC aDC, const PRUnichar* aString,
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PRUint32 aLength);
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virtual void DrawString(HDC aDC, PRInt32 aX, PRInt32 aY,
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@ -305,14 +360,29 @@ class nsFontMetricsWinA : public nsFontMetricsWin
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{
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public:
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virtual nsFontWin* FindLocalFont(HDC aDC, PRUnichar aChar);
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virtual nsFontWin* LoadGenericFont(HDC aDC, PRUnichar aChar, nsString* aName);
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virtual nsFontWin* FindGlobalFont(HDC aDC, PRUnichar aChar);
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virtual nsFontWin* LoadGenericFont(HDC aDC, PRUnichar aChar, char** aName);
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virtual nsFontWin* LoadFont(HDC aDC, nsString* aName);
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virtual nsFontWin* LoadSubstituteFont(HDC aDC, nsString* aName);
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virtual nsFontWin* FindSubstituteFont(HDC aDC, PRUnichar aChar);
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virtual nsFontWin* LoadFont(HDC aDC, nsString* aName);
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virtual nsFontWin* LoadGlobalFont(HDC aDC, nsGlobalFont* aGlobalFontItem);
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virtual nsFontWin* LoadSubstituteFont(HDC aDC, nsString* aName);
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virtual nsFontWin* GetFontFor(HFONT aHFONT);
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virtual nsresult
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ResolveForwards(HDC aDC,
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const PRUnichar* aString,
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PRUint32 aLength,
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nsFontSwitchCallback aFunc,
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void* aData);
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virtual nsresult
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ResolveBackwards(HDC aDC,
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const PRUnichar* aString,
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PRUint32 aLength,
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nsFontSwitchCallback aFunc,
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void* aData);
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};
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#endif /* nsFontMetricsWin_h__ */
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