protected internal virtual void FlushFontData(String fontName, PdfName subtype)
{
GetPdfObject().Put(PdfName.Subtype, subtype);
if (fontName != null && fontName.Length > 0)
{
GetPdfObject().Put(PdfName.BaseFont, new PdfName(fontName));
}
int firstChar;
int lastChar;
for (firstChar = 0; firstChar < 256; ++firstChar)
{
if (shortTag[firstChar] != 0)
{
break;
}
}
for (lastChar = 255; lastChar >= firstChar; --lastChar)
{
if (shortTag[lastChar] != 0)
{
break;
}
}
if (firstChar > 255)
{
firstChar = 255;
lastChar = 255;
}
if (!IsSubset() || !IsEmbedded())
{
firstChar = 0;
lastChar = shortTag.Length - 1;
for (int k = 0; k < shortTag.Length; ++k)
{
// remove unsupported by encoding values in case custom encoding.
// save widths information in case standard pdf encodings (winansi or macroman)
if (fontEncoding.CanDecode(k))
{
shortTag[k] = 1;
}
else
{
if (!fontEncoding.HasDifferences() && fontProgram.GetGlyphByCode(k) != null)
{
shortTag[k] = 1;
}
else
{
shortTag[k] = 0;
}
}
}
}
if (fontEncoding.HasDifferences())
{
// trim range of symbols
for (int k = firstChar; k <= lastChar; ++k)
{
if (!FontEncoding.NOTDEF.Equals(fontEncoding.GetDifference(k)))
{
firstChar = k;
break;
}
}
for (int k = lastChar; k >= firstChar; --k)
{
if (!FontEncoding.NOTDEF.Equals(fontEncoding.GetDifference(k)))
{
lastChar = k;
break;
}
}
PdfDictionary enc = new PdfDictionary();
enc.Put(PdfName.Type, PdfName.Encoding);
PdfArray diff = new PdfArray();
bool gap = true;
for (int k = firstChar; k <= lastChar; ++k)
{
if (shortTag[k] != 0)
{
if (gap)
{
diff.Add(new PdfNumber(k));
gap = false;
}
diff.Add(new PdfName(fontEncoding.GetDifference(k)));
}
else
{
gap = true;
}
}
enc.Put(PdfName.Differences, diff);
GetPdfObject().Put(PdfName.Encoding, enc);
}
else
{
if (!fontEncoding.IsFontSpecific())
{
GetPdfObject().Put(PdfName.Encoding, PdfEncodings.CP1252.Equals(fontEncoding.GetBaseEncoding()) ? PdfName.
WinAnsiEncoding : PdfName.MacRomanEncoding);
}
}
if (IsForceWidthsOutput() || !IsBuiltInFont() || fontEncoding.HasDifferences())
{
GetPdfObject().Put(PdfName.FirstChar, new PdfNumber(firstChar));
GetPdfObject().Put(PdfName.LastChar, new PdfNumber(lastChar));
PdfArray wd = new PdfArray();
for (int k = firstChar; k <= lastChar; ++k)
{
if (shortTag[k] == 0)
{
wd.Add(new PdfNumber(0));
}
else
{
//prevent lost of widths info
int uni = fontEncoding.GetUnicode(k);
Glyph glyph = uni > -1 ? GetGlyph(uni) : fontProgram.GetGlyphByCode(k);
wd.Add(new PdfNumber(glyph != null ? glyph.GetWidth() : 0));
}
}
GetPdfObject().Put(PdfName.Widths, wd);
}
PdfDictionary fontDescriptor = !IsBuiltInFont() ? GetFontDescriptor(fontName) : null;
if (fontDescriptor != null)
{
GetPdfObject().Put(PdfName.FontDescriptor, fontDescriptor);
if (fontDescriptor.GetIndirectReference() != null)
{
fontDescriptor.Flush();
}
}
}
