public override byte[] ConvertToBytes(GlyphLine glyphLine)
{
if (glyphLine != null)
{
byte[] bytes = new byte[glyphLine.Size()];
int ptr = 0;
if (fontEncoding.IsFontSpecific())
{
for (int i = 0; i < glyphLine.Size(); i++)
{
bytes[ptr++] = (byte)glyphLine.Get(i).GetCode();
}
}
else
{
for (int i = 0; i < glyphLine.Size(); i++)
{
if (fontEncoding.CanEncode(glyphLine.Get(i).GetUnicode()))
{
bytes[ptr++] = (byte)fontEncoding.ConvertToByte(glyphLine.Get(i).GetUnicode());
}
}
}
bytes = ArrayUtil.ShortenArray(bytes, ptr);
foreach (byte b in bytes)
{
shortTag[b & 0xff] = 1;
}
return(bytes);
}
else
{
return(EMPTY_BYTES);
}
}
internal static TrueTypeFont CreateFontProgram(PdfDictionary fontDictionary, FontEncoding fontEncoding)
{
iText.Kernel.Font.DocTrueTypeFont fontProgram = new iText.Kernel.Font.DocTrueTypeFont(fontDictionary);
FillFontDescriptor(fontProgram, fontDictionary.GetAsDictionary(PdfName.FontDescriptor));
PdfNumber firstCharNumber = fontDictionary.GetAsNumber(PdfName.FirstChar);
int firstChar = firstCharNumber != null?Math.Max(firstCharNumber.IntValue(), 0) : 0;
int[] widths = FontUtil.ConvertSimpleWidthsArray(fontDictionary.GetAsArray(PdfName.Widths), firstChar, fontProgram
.GetMissingWidth());
fontProgram.avgWidth = 0;
int glyphsWithWidths = 0;
for (int i = 0; i < 256; i++)
{
Glyph glyph = new Glyph(i, widths[i], fontEncoding.GetUnicode(i));
fontProgram.codeToGlyph[i] = glyph;
//FontEncoding.codeToUnicode table has higher priority
if (glyph.HasValidUnicode() && fontEncoding.ConvertToByte(glyph.GetUnicode()) == i)
{
fontProgram.unicodeToGlyph[glyph.GetUnicode()] = glyph;
}
if (widths[i] > 0)
{
glyphsWithWidths++;
fontProgram.avgWidth += widths[i];
}
}
if (glyphsWithWidths != 0)
{
fontProgram.avgWidth /= glyphsWithWidths;
}
return(fontProgram);
}
internal static Type1Font CreateFontProgram(PdfDictionary fontDictionary, FontEncoding fontEncoding, CMapToUnicode
toUnicode)
{
PdfName baseFontName = fontDictionary.GetAsName(PdfName.BaseFont);
String baseFont;
if (baseFontName != null)
{
baseFont = baseFontName.GetValue();
}
else
{
baseFont = FontUtil.CreateRandomFontName();
}
if (!fontDictionary.ContainsKey(PdfName.FontDescriptor))
{
Type1Font type1StdFont;
try {
//if there are no font modifiers, cached font could be used,
//otherwise a new instance should be created.
type1StdFont = (Type1Font)FontProgramFactory.CreateFont(baseFont, true);
}
catch (Exception) {
type1StdFont = null;
}
if (type1StdFont != null)
{
return(type1StdFont);
}
}
iText.Kernel.Font.DocType1Font fontProgram = new iText.Kernel.Font.DocType1Font(baseFont);
PdfDictionary fontDesc = fontDictionary.GetAsDictionary(PdfName.FontDescriptor);
fontProgram.subtype = fontDesc.GetAsName(PdfName.Subtype);
FillFontDescriptor(fontProgram, fontDesc);
PdfNumber firstCharNumber = fontDictionary.GetAsNumber(PdfName.FirstChar);
int firstChar = firstCharNumber != null?Math.Max(firstCharNumber.IntValue(), 0) : 0;
int[] widths = FontUtil.ConvertSimpleWidthsArray(fontDictionary.GetAsArray(PdfName.Widths), firstChar, fontProgram
.GetMissingWidth());
fontProgram.avgWidth = 0;
int glyphsWithWidths = 0;
for (int i = 0; i < 256; i++)
{
Glyph glyph = new Glyph(i, widths[i], fontEncoding.GetUnicode(i));
fontProgram.codeToGlyph[i] = glyph;
if (glyph.HasValidUnicode())
{
//FontEncoding.codeToUnicode table has higher priority
if (fontEncoding.ConvertToByte(glyph.GetUnicode()) == i)
{
fontProgram.unicodeToGlyph[glyph.GetUnicode()] = glyph;
}
}
else
{
if (toUnicode != null)
{
glyph.SetChars(toUnicode.Lookup(i));
}
}
if (widths[i] > 0)
{
glyphsWithWidths++;
fontProgram.avgWidth += widths[i];
}
}
if (glyphsWithWidths != 0)
{
fontProgram.avgWidth /= glyphsWithWidths;
}
return(fontProgram);
}
