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/*
* FTGL - OpenGL font library
*
* Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "config.h"
#include "FTSize.h"
FTSize::FTSize()
: ftFace(0),
ftSize(0),
size(0),
xResolution(0),
yResolution(0),
err(0)
{}
FTSize::~FTSize()
{}
bool FTSize::CharSize(FT_Face* face, unsigned int pointSize, unsigned int xRes, unsigned int yRes)
{
if(size != pointSize || xResolution != xRes || yResolution != yRes)
{
err = FT_Set_Char_Size(*face, 0L, pointSize * 64, xResolution, yResolution);
if(!err)
{
ftFace = face;
size = pointSize;
xResolution = xRes;
yResolution = yRes;
ftSize = (*ftFace)->size;
}
}
return !err;
}
unsigned int FTSize::CharSize() const
{
return size;
}
float FTSize::Ascender() const
{
return ftSize == 0 ? 0.0f : static_cast<float>(ftSize->metrics.ascender) / 64.0f;
}
float FTSize::Descender() const
{
return ftSize == 0 ? 0.0f : static_cast<float>(ftSize->metrics.descender) / 64.0f;
}
float FTSize::Height() const
{
if(0 == ftSize)
{
return 0.0f;
}
if(FT_IS_SCALABLE((*ftFace)))
{
return ((*ftFace)->bbox.yMax - (*ftFace)->bbox.yMin) * ((float)ftSize->metrics.y_ppem / (float)(*ftFace)->units_per_EM);
}
else
{
return static_cast<float>(ftSize->metrics.height) / 64.0f;
}
}
float FTSize::Width() const
{
if(0 == ftSize)
{
return 0.0f;
}
if(FT_IS_SCALABLE((*ftFace)))
{
return ((*ftFace)->bbox.xMax - (*ftFace)->bbox.xMin) * (static_cast<float>(ftSize->metrics.x_ppem) / static_cast<float>((*ftFace)->units_per_EM));
}
else
{
return static_cast<float>(ftSize->metrics.max_advance) / 64.0f;
}
}
float FTSize::Underline() const
{
return 0.0f;
}
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