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