public FontWidths(Demon.Font.FontWidths underlying)
{
_underlying = underlying;
}
protected virtual void Load(string filename)
{
//TODO: Load the actual font, not just its AFM file. The AFM file
//is only useful to us for the standard 14 fonts.
ushort[] widths = new ushort[256];
ushort widthIndex = 0;
int sumWidths = 0;
using (StreamReader file = File.OpenText(filename))
{
while (!file.EndOfStream)
{
string line = file.ReadLine();
MatchCollection mc = Regex.Matches(line, @"^FamilyName (.+)");
if (mc.Count == 1)
{
_familyName = mc[0].Groups[1].Captures[0].Value;
continue;
}
mc = Regex.Matches(line, @"^FontName (.+)");
if (mc.Count == 1)
{
_postScriptName = mc[0].Groups[1].Captures[0].Value;
continue;
}
mc = Regex.Matches(line, @"^Weight (\w+)");
if (mc.Count == 1)
{
switch (mc[0].Groups[1].Captures[0].Value.ToLower())
{
case "thin": _weight = 100; break;
case "extra-light": _weight = 200; break;
case "light": _weight = 300; break;
case "normal": _weight = 400; break;
case "regular": _weight = 400; break;
case "medium": _weight = 500; break;
case "semi-bold": _weight = 600; break;
case "demi-bold": _weight = 600; break;
case "bold": _weight = 700; break;
case "extra-bold": _weight = 800; break;
case "ultra-bold": _weight = 800; break;
case "black": _weight = 900; break;
case "heavy": _weight = 900; break;
default: _weight = 400; break;
}
_bold = _weight >= 600;
continue;
}
mc = Regex.Matches(line, @"^ItalicAngle (-?\d+)");
if (mc.Count == 1)
{
float.TryParse(mc[0].Groups[1].Captures[0].Value, out _italicAngle);
_italic = _italicAngle != 0.0;
continue;
}
mc = Regex.Matches(line, @"^IsFixedPitch (\w+)");
if (mc.Count == 1)
{
bool.TryParse(mc[0].Groups[1].Captures[0].Value, out _isFixedPitch);
continue;
}
mc = Regex.Matches(line, @"^UnderlinePosition (-?\d+)");
if (mc.Count == 1)
{
short.TryParse(mc[0].Groups[1].Captures[0].Value, out _underlinePosition);
continue;
}
mc = Regex.Matches(line, @"^UnderlineThickness (-?\d+)");
if (mc.Count == 1)
{
short.TryParse(mc[0].Groups[1].Captures[0].Value, out _underlineThickness);
continue;
}
mc = Regex.Matches(line, @"^FontBBox ([0-9\-]+) ([0-9\-]+) ([0-9\-]+) ([0-9\-]+)");
if (mc.Count == 1)
{
int left = 0;
int bottom = 0;
int right = 0;
int top = 0;
int.TryParse(mc[0].Groups[1].Captures[0].Value, out left);
int.TryParse(mc[0].Groups[2].Captures[0].Value, out bottom);
int.TryParse(mc[0].Groups[3].Captures[0].Value, out right);
int.TryParse(mc[0].Groups[4].Captures[0].Value, out top);
_bbox = new BoundingBox(left, bottom, right, bottom);
continue;
}
mc = Regex.Matches(line, @"^CapHeight (\d+)");
if (mc.Count == 1)
{
short.TryParse(mc[0].Groups[1].Captures[0].Value, out _capHeight);
continue;
}
mc = Regex.Matches(line, @"^XHeight (\d+)");
if (mc.Count == 1)
{
short.TryParse(mc[0].Groups[1].Captures[0].Value, out _xHeight);
continue;
}
mc = Regex.Matches(line, @"^Ascender (\d+)");
if (mc.Count == 1)
{
short.TryParse(mc[0].Groups[1].Captures[0].Value, out _ascender);
continue;
}
mc = Regex.Matches(line, @"^Descender (-?\d+)");
if (mc.Count == 1)
{
short.TryParse(mc[0].Groups[1].Captures[0].Value, out _descender);
continue;
}
// Widths
mc = Regex.Matches(line, @"^C (\d+) ; WX (\d+)");
if (mc.Count == 1)
{
ushort c;
ushort w;
ushort.TryParse(mc[0].Groups[1].Captures[0].Value, out c);
ushort.TryParse(mc[0].Groups[2].Captures[0].Value, out w);
if (_firstChar == 0)
{
_firstChar = c;
}
_lastChar = c;
widths[widthIndex] = w;
sumWidths += w;
_avgCharWidth = (short)(sumWidths / (widthIndex + 1));
if (w > _advanceWidthMax)
{
_advanceWidthMax = w;
}
++widthIndex;
}
}
}
_widths = new FontWidths(widths);
}
