public int GetKerning(int firstUnicode, int secondUnicode)
{
NativeMethods.ABC first = m_glyphSizes[ToInternalGlyphIndex(firstUnicode)];
NativeMethods.ABC second = m_glyphSizes[ToInternalGlyphIndex(secondUnicode)];
return(first.abcC + second.abcA); // http://msdn.microsoft.com/en-us/library/dd183418(VS.85).aspx
}
private unsafe void ObtainMetrics()
{
m_glyphSizes = new NativeMethods.ABC[m_toUnicode - m_fromUnicode + 1];
IntPtr graphicsHdc = m_tempGraphics.GetHdc();
IntPtr hGdiFont = m_gdiFont.ToHfont();
try
{
IntPtr lastHFont = NativeMethods.SelectObject(graphicsHdc, hGdiFont);
NativeMethods.GetTextMetricsW(graphicsHdc, out m_textMetrics);
fixed(NativeMethods.ABC *ptr = m_glyphSizes)
{
NativeMethods.GetCharABCWidthsW(graphicsHdc, (uint)m_fromUnicode, (uint)m_toUnicode, ptr);
}
NativeMethods.SelectObject(graphicsHdc, lastHFont);
}
finally
{
NativeMethods.DeleteObject(hGdiFont);
m_tempGraphics.ReleaseHdc(graphicsHdc);
}
m_cellSize = new Point2(m_textMetrics.tmMaxCharWidth, m_textMetrics.tmHeight);
m_glyphs = new GlyphInfo[m_toUnicode - m_fromUnicode + 1];
for (int i = 0; i < m_glyphs.Length; i++)
{
NativeMethods.ABC abcSize = m_glyphSizes[i];
m_glyphs[i].Width = abcSize.abcA + (int)abcSize.abcB + abcSize.abcC;
}
//for (int i = m_fromUnicode; i <= m_toUnicode; i++)
//{
// int width = (int)Math.Ceiling(m_tempGraphics.MeasureString(Convert.ToChar(i).ToString(), m_gdiFont).Width);
// if (width > m_cellSize.X) m_cellSize.X = width;
// m_glyphs[ToInternalGlyphIndex(i)].Width = width;
//}
}