FTCharToGlyphIndexMap Class Reference

#include <FTCharToGlyphIndexMap.h>

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Detailed Description

Provides a non-STL alternative to the STL map<unsigned long, unsigned long> which maps character codes to glyph indices inside FTCharmap.

Implementation:

• NumberOfBuckets buckets are considered.
• Each bucket has BucketSize entries.
• When the glyph index for the character code C has to be stored, the bucket this character belongs to is found using 'C div BucketSize'. If this bucket has not been allocated yet, do it now. The entry in the bucked is found using 'C mod BucketSize'. If it is set to IndexNotFound, then the glyph entry has not been set.
• Try to mimic the calls made to the STL map API.

Caveats:

• The glyph index is now a signed long instead of unsigned long, so the special value IndexNotFound (= -1) can be used to specify that the glyph index has not been stored yet.

Definition at line 27 of file FTCharToGlyphIndexMap.h.

Public Types
typedef unsigned long	CharacterCode
typedef signed long	GlyphIndex
enum	{ NumberOfBuckets = 256, BucketSize = 256, IndexNotFound = -1 }
Public Member Functions
	FTCharToGlyphIndexMap ()
virtual	~FTCharToGlyphIndexMap ()
void	clear ()
const GlyphIndex	find (CharacterCode c)
void	insert (CharacterCode c, GlyphIndex g)

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Member Typedef Documentation

typedef unsigned long FTCharToGlyphIndexMap::CharacterCode

Definition at line 31 of file FTCharToGlyphIndexMap.h. Referenced by find(), and insert().

typedef signed long FTCharToGlyphIndexMap::GlyphIndex

Definition at line 32 of file FTCharToGlyphIndexMap.h. Referenced by find(), and insert().

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Member Enumeration Documentation

anonymous enum

Enumeration values: NumberOfBuckets  BucketSize  IndexNotFound  Definition at line 34 of file FTCharToGlyphIndexMap.h.

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Constructor & Destructor Documentation

FTCharToGlyphIndexMap::FTCharToGlyphIndexMap (   )  [inline]

Definition at line 41 of file FTCharToGlyphIndexMap.h.

virtual FTCharToGlyphIndexMap::~FTCharToGlyphIndexMap (   )  [inline, virtual]

Definition at line 46 of file FTCharToGlyphIndexMap.h.

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Member Function Documentation

void FTCharToGlyphIndexMap::clear (   )  [inline]

Definition at line 59 of file FTCharToGlyphIndexMap.h. References NumberOfBuckets. Referenced by FTCharmap::CharMap(), and FTCharmap::~FTCharmap().

const GlyphIndex FTCharToGlyphIndexMap::find (  CharacterCode  c  )  [inline]

Definition at line 74 of file FTCharToGlyphIndexMap.h. References BucketSize, CharacterCode, GlyphIndex, and IndexNotFound. Referenced by FTCharmap::GlyphListIndex().

void FTCharToGlyphIndexMap::insert (  CharacterCode  c, GlyphIndex  g )  [inline]

Definition at line 98 of file FTCharToGlyphIndexMap.h. References BucketSize, CharacterCode, GlyphIndex, IndexNotFound, and NumberOfBuckets. Referenced by FTCharmap::InsertIndex().

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The documentation for this class was generated from the following file:

• FTCharToGlyphIndexMap.h

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