public override int GetCharWidth(PDFFont pdfFont, TTFontData data,
char charCode)
{
InitLibrary();
int aint = (int)charCode;
if (data.Widths.IndexOfKey(charCode) >= 0)
{
return(data.Widths[charCode]);
}
LogFontFt cfont = data.LogFont;
cfont.OpenFont();
int awidth = 0;
Monitor.Enter(flag);
try
{
if (data.Widths.IndexOfKey(charCode) >= 0)
{
awidth = data.Widths[charCode];
}
else
{
if (0 == FT.FT_Load_Char(cfont.iface, (uint)charCode, (int)FT.FT_LOAD_NO_SCALE))
{
FT_FaceRec aface = (FT_FaceRec)Marshal.PtrToStructure(cfont.iface, typeof(FT_FaceRec));
FT_GlyphSlotRec aglyph = (FT_GlyphSlotRec)Marshal.PtrToStructure(aface.glyph, typeof(FT_GlyphSlotRec));
ushort width1 = (ushort)(aglyph.linearHoriAdvance >> 16);
ushort width2 = (ushort)(aglyph.linearHoriAdvance & 0x0000FFFF);
double dwidth = width1 + width2 / (double)65535;
awidth = System.Convert.ToInt32(Math.Round(cfont.widthmult * dwidth));
}
data.Widths[charCode] = awidth;
data.Glyphs[charCode] = System.Convert.ToInt32(FT.FT_Get_Char_Index(cfont.iface, charCode));
if (data.FirstLoaded > aint)
{
data.FirstLoaded = aint;
}
if (data.LastLoaded < aint)
{
data.LastLoaded = aint;
}
}
}
finally
{
Monitor.Exit(flag);
}
return(awidth);
}
public override int GetKerning(PDFFont pdfFont, TTFontData data,
char leftChar, char rightChar)
{
LogFontFt cfont = data.LogFont;
if (!cfont.havekerning)
{
return(0);
}
int nresult = 0;
//string nkerning = ""+leftChar+rightChar;
ulong nkerning = (ulong)((int)leftChar << 32) + (ulong)rightChar;
if (data.Kernings.IndexOfKey(nkerning) >= 0)
{
return(data.Kernings[nkerning]);
}
cfont.OpenFont();
Monitor.Enter(flag);
try
{
if (data.Kernings.IndexOfKey(nkerning) >= 0)
{
nresult = data.Kernings[nkerning];
}
uint w1 = FT.FT_Get_Char_Index(cfont.iface, (uint)leftChar);
if (w1 > 0)
{
uint w2 = FT.FT_Get_Char_Index(cfont.iface, (uint)rightChar);
if (w2 > 0)
{
FT_Vector akerning;
CheckFreeType(FT.FT_Get_Kerning(cfont.iface, w1, w2, (uint)FT_Kerning_Flags.FT_KERNING_UNSCALED, out akerning));
nresult = System.Convert.ToInt32(Math.Round(cfont.widthmult * -akerning.x));
}
else
{
data.Kernings.Add(nkerning, 0);
}
}
else
{
data.Kernings.Add(nkerning, 0);
}
}
finally
{
Monitor.Exit(flag);
}
return(nresult);
}