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#include "FTSize.h"
FTSize::FTSize()
: ftFace(0),
ftSize(0),
size(0),
err(0)
{}
FTSize::~FTSize()
{}
bool FTSize::CharSize( FT_Face* face, unsigned int point_size, unsigned int x_resolution, unsigned int y_resolution )
{
err = FT_Set_Char_Size( *face, 0L, point_size * 64, x_resolution, y_resolution);
if( !err)
{
ftFace = face;
size = point_size;
ftSize = (*ftFace)->size;
}
else
{
ftFace = 0;
size = 0;
ftSize = 0;
}
return !err;
}
unsigned int FTSize::CharSize() const
{
return size;
}
int FTSize::Ascender() const
{
return ftSize == 0 ? 0 : ftSize->metrics.ascender >> 6;
}
int FTSize::Descender() const
{
return ftSize == 0 ? 0 : ftSize->metrics.descender >> 6;
}
int FTSize::Height() const
{
if( ftSize == 0)
{
return 0;
}
if( FT_IS_SCALABLE((*ftFace)))
{
float height = ( (*ftFace)->bbox.yMax - (*ftFace)->bbox.yMin)
* ( (float)ftSize->metrics.y_ppem / (float)(*ftFace)->units_per_EM);
return static_cast<int>(height);
}
else
{
return ftSize->metrics.height >> 6;
}
}
int FTSize::Width() const
{
if( ftSize == 0)
{
return 0;
}
if( FT_IS_SCALABLE((*ftFace)))
{
float width = ( (*ftFace)->bbox.xMax - (*ftFace)->bbox.xMin)
* ( (float)ftSize->metrics.x_ppem / (float)(*ftFace)->units_per_EM);
return static_cast<int>(width);
}
else
{
return ftSize->metrics.max_advance >> 6;
}
}
int FTSize::Underline() const
{
return 0;
}