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#include "FTFace.h"
#include "FTLibrary.h"
#include FT_TRUETYPE_TABLES_H
FTFace::FTFace( const char* filename)
: numGlyphs(0),
fontEncodingList(0),
err(0)
{
const FT_Long DEFAULT_FACE_INDEX = 0;
ftFace = new FT_Face;
err = FT_New_Face( *FTLibrary::Instance().GetLibrary(), filename, DEFAULT_FACE_INDEX, ftFace);
if( err)
{
delete ftFace;
ftFace = 0;
}
else
{
numGlyphs = (*ftFace)->num_glyphs;
}
}
FTFace::FTFace( const unsigned char *pBufferBytes, size_t bufferSizeInBytes)
: numGlyphs(0),
err(0)
{
const FT_Long DEFAULT_FACE_INDEX = 0;
ftFace = new FT_Face;
err = FT_New_Memory_Face( *FTLibrary::Instance().GetLibrary(), (FT_Byte *)pBufferBytes, bufferSizeInBytes, DEFAULT_FACE_INDEX, ftFace);
if( err)
{
delete ftFace;
ftFace = 0;
}
else
{
numGlyphs = (*ftFace)->num_glyphs;
}
}
FTFace::~FTFace()
{
Close();
}
bool FTFace::Attach( const char* filename)
{
err = FT_Attach_File( *ftFace, filename);
return !err;
}
bool FTFace::Attach( const unsigned char *pBufferBytes, size_t bufferSizeInBytes)
{
FT_Open_Args open;
open.flags = FT_OPEN_MEMORY;
open.memory_base = (FT_Byte *)pBufferBytes;
open.memory_size = bufferSizeInBytes;
err = FT_Attach_Stream( *ftFace, &open);
return !err;
}
void FTFace::Close()
{
if( ftFace)
{
FT_Done_Face( *ftFace);
delete ftFace;
ftFace = 0;
}
}
const FTSize& FTFace::Size( const unsigned int size, const unsigned int res)
{
charSize.CharSize( ftFace, size, res, res);
err = charSize.Error();
return charSize;
}
unsigned int FTFace::CharMapCount()
{
return (*ftFace)->num_charmaps;
}
FT_Encoding* FTFace::CharMapList()
{
if( 0 == fontEncodingList)
{
fontEncodingList = new FT_Encoding[CharMapCount()];
for( size_t encodingIndex = 0; encodingIndex < CharMapCount(); ++encodingIndex)
{
fontEncodingList[encodingIndex] = (*ftFace)->charmaps[encodingIndex]->encoding;
}
}
return fontEncodingList;
}
unsigned int FTFace::UnitsPerEM() const
{
return (*ftFace)->units_per_EM;
}
FTPoint FTFace::KernAdvance( unsigned int index1, unsigned int index2)
{
float x, y;
x = y = 0.0f;
if( FT_HAS_KERNING((*ftFace)) && index1 && index2)
{
FT_Vector kernAdvance;
kernAdvance.x = kernAdvance.y = 0;
err = FT_Get_Kerning( *ftFace, index1, index2, ft_kerning_unfitted, &kernAdvance);
if( !err)
{
x = static_cast<float>( kernAdvance.x) / 64.0f;
y = static_cast<float>( kernAdvance.y) / 64.0f;
}
}
return FTPoint( x, y, 0.0);
}
FT_GlyphSlot FTFace::Glyph( unsigned int index, FT_Int load_flags)
{
err = FT_Load_Glyph( *ftFace, index, load_flags);
if( err)
{
return NULL;
}
return (*ftFace)->glyph;
}
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