kc3-lang/ftgl/src/FTSize.cpp

Branch : - branch - master - tag -

• Show log

  Commit

• Author : henry
  Date : 2001-08-19 22:40:43
  Hash : be5b608f
  Message : Changed the size stuff to use floats rather than ints. Global height and width is now calculated using the bbox

• src/FTSize.cpp

• #include	"FTSize.h"
  #include	"FTGL.h"
  
  
  FTSize::FTSize()
  :	size(0)
  {}
  
  
  FTSize::~FTSize()
  {}
  
  
  bool	FTSize::CharSize( FT_Face* ftFace, int point_size, int x_resolution, int y_resolution )
  {
  	this->ftFace = ftFace;
  	size = point_size;
  	err = FT_Set_Char_Size( *ftFace, 0L, point_size * 64, x_resolution, y_resolution);
  	
  	ftSize = (*ftFace)->size;
  	
  	return !err;
  }
  
  
  float FTSize::Ascender() const
  {
  	return ftSize->metrics.ascender >> 6;
  }
  
  
  float FTSize::Descender() const
  {
  	return ftSize->metrics.descender >> 6;
  }
  
  
  float FTSize::Height() const
  {
  	if( FT_IS_SCALABLE((*ftFace)))
  	{
  		float height;
  		if( FT_IS_SFNT((*ftFace))) // Don't think this is correct
  		{
  			height = (*ftFace)->bbox.yMax - (*ftFace)->bbox.yMin; // bbox.yMax-bbox.yMin
  		}
  		else
  		{
  			height = (*ftFace)->bbox.yMax - (*ftFace)->bbox.yMin >> 16; // bbox.yMax-bbox.yMin
  		}
  
  		height =  height * ( (float)ftSize->metrics.y_ppem / (float)(*ftFace)->units_per_EM);
  		return height;
  	}
  	else
  	{
  		return ftSize->metrics.height >> 6;
  	}
  }
  
  
  float FTSize::Width() const
  {
  	if( FT_IS_SCALABLE((*ftFace)))
  	{
  		float width;
  		if( FT_IS_SFNT((*ftFace))) // Don't think this is correct
  		{
  			width = ((*ftFace)->bbox.xMax - (*ftFace)->bbox.xMin); // bbox.xMax-bbox.xMin
  		}
  		else
  		{
  			width = ((*ftFace)->bbox.xMax - (*ftFace)->bbox.xMin) >> 16; // bbox.xMax-bbox.xMin
  		}
  		
  		width = width * ( (float)ftSize->metrics.x_ppem / (float)(*ftFace)->units_per_EM);
  		return width;
  	}
  	else
  	{
  		return ftSize->metrics.max_advance >> 6;
  	}
  }
  
  
  float FTSize::Underline() const
  {
  	return 0;
  }