// Pulls out a Vertical Matric and updates vhea if necessary
public bool removeVerticalMetric(ushort nIndex)
{
bool bResult = true;
if (nIndex < m_nGlyphsInTheFont)
{
// if we are removing a vertical matrix that is less the the number of long vertical
// metrics we need to adjust for this so we know how to write it later and fix up the vhea_table
if (nIndex < m_nLongVerMetrics)
{
m_nLongVerMetrics--;
Table_vhea.vhea_cache vheaCache = (Table_vhea.vhea_cache)m_vheaTable.GetCache();
vheaCache.numOfLongVerMetrics--;
}
// NOTE: Table maxp and ltsh numGlyphs isn't being dynamically updated
m_nGlyphsInTheFont--;
m_vMetric.RemoveAt(nIndex);
m_bDirty = true;
}
else
{
bResult = false;
throw new ArgumentOutOfRangeException("Tried to remove a Vertical Matric that did not exist.");
}
return(bResult);
}
// Does the real work of adding
protected bool addToVerticalMetric(ushort nIndex, ushort nAdvanceHeight, short nTopSideBearing)
{
bool bResult = true;
// NOTE: This might not be OK we might want to add a glyph that is much greater the the number that is there now
if (nIndex <= m_nGlyphsInTheFont)
{
// if we are adding a vertical matrix that is less the the number of long vertical
// metrics we need to adjust for this so we know how to write it later and fix up the vhea_table
if (nIndex < m_nLongVerMetrics || (nIndex == m_nLongVerMetrics && nAdvanceHeight != 0))
{
m_nLongVerMetrics++;
Table_vhea.vhea_cache vheaCache = (Table_vhea.vhea_cache)m_vheaTable.GetCache();
vheaCache.numOfLongVerMetrics++;
}
// NOTE: Table maxp and ltsh numGlyphs isn't being dynamically updated
m_nGlyphsInTheFont++;
vMetric vm = new vMetric();
vm.advanceHeight = nAdvanceHeight;
vm.topSideBearing = nTopSideBearing;
m_vMetric.Insert(nIndex, vm);
m_bDirty = true;
}
else
{
bResult = false;
throw new ArgumentOutOfRangeException("Tried to add a Vertical Matric to a position greater than the number of Glyphs + 1.");
}
return(bResult);
}