/**
* Decodes a string of bytes (encoded in the font's encoding) into a unicode string
* This will use the ToUnicode map of the font, if available, otherwise it uses
* the font's encoding
* @param cidbytes the bytes that need to be decoded
* @return the unicode String that results from decoding
* @since 2.1.7
*/
virtual public String Decode(byte[] cidbytes, int offset, int len)
{
StringBuilder sb = new StringBuilder();
if (toUnicodeCmap == null && byteCid != null)
{
CMapSequence seq = new CMapSequence(cidbytes, offset, len);
String cid = byteCid.DecodeSequence(seq);
foreach (char ca in cid)
{
int c = cidUni.Lookup(ca);
if (c > 0)
{
sb.Append(Utilities.ConvertFromUtf32(c));
}
}
}
else
{
for (int i = offset; i < offset + len; i++)
{
String rslt = DecodeSingleCID(cidbytes, i, 1);
if (rslt == null && i < offset + len - 1)
{
rslt = DecodeSingleCID(cidbytes, i, 2);
i++;
}
if (rslt != null)
{
sb.Append(rslt);
}
}
}
return(sb.ToString());
}
public override int GetUnicodeEquivalent(int c)
{
if (cidDirect)
{
if (c == CID_NEWLINE)
{
return('\n');
}
return(cidUni.Lookup(c));
}
return(c);
}
private void InitializeCidFontProperties(IDictionary <String, Object> fontDesc)
{
fontIdentification.SetPanose((String)fontDesc.Get("Panose"));
fontMetrics.SetItalicAngle(Convert.ToInt32((String)fontDesc.Get("ItalicAngle"), System.Globalization.CultureInfo.InvariantCulture
));
fontMetrics.SetCapHeight(Convert.ToInt32((String)fontDesc.Get("CapHeight"), System.Globalization.CultureInfo.InvariantCulture
));
fontMetrics.SetTypoAscender(Convert.ToInt32((String)fontDesc.Get("Ascent"), System.Globalization.CultureInfo.InvariantCulture
));
fontMetrics.SetTypoDescender(Convert.ToInt32((String)fontDesc.Get("Descent"), System.Globalization.CultureInfo.InvariantCulture
));
fontMetrics.SetStemV(Convert.ToInt32((String)fontDesc.Get("StemV"), System.Globalization.CultureInfo.InvariantCulture
));
pdfFontFlags = Convert.ToInt32((String)fontDesc.Get("Flags"), System.Globalization.CultureInfo.InvariantCulture
);
String fontBBox = (String)fontDesc.Get("FontBBox");
StringTokenizer tk = new StringTokenizer(fontBBox, " []\r\n\t\f");
int llx = Convert.ToInt32(tk.NextToken(), System.Globalization.CultureInfo.InvariantCulture);
int lly = Convert.ToInt32(tk.NextToken(), System.Globalization.CultureInfo.InvariantCulture);
int urx = Convert.ToInt32(tk.NextToken(), System.Globalization.CultureInfo.InvariantCulture);
int ury = Convert.ToInt32(tk.NextToken(), System.Globalization.CultureInfo.InvariantCulture);
fontMetrics.UpdateBbox(llx, lly, urx, ury);
registry = (String)fontDesc.Get("Registry");
String uniMap = GetCompatibleUniMap(registry);
if (uniMap != null)
{
IntHashtable metrics = (IntHashtable)fontDesc.Get("W");
CMapCidUni cid2Uni = FontCache.GetCid2UniCmap(uniMap);
avgWidth = 0;
foreach (int cid in cid2Uni.GetCids())
{
int uni = cid2Uni.Lookup(cid);
int width = metrics.ContainsKey(cid) ? metrics.Get(cid) : DEFAULT_WIDTH;
Glyph glyph = new Glyph(cid, width, uni);
avgWidth += glyph.GetWidth();
codeToGlyph.Put(cid, glyph);
unicodeToGlyph.Put(uni, glyph);
}
FixSpaceIssue();
if (codeToGlyph.Count != 0)
{
avgWidth /= codeToGlyph.Count;
}
}
}