/// <exception cref="System.IO.IOException"/>
private void InitializeFontProperties()
{
// initialize sfnt tables
OpenTypeParser.HeaderTable head = fontParser.GetHeadTable();
OpenTypeParser.HorizontalHeader hhea = fontParser.GetHheaTable();
OpenTypeParser.WindowsMetrics os_2 = fontParser.GetOs_2Table();
OpenTypeParser.PostTable post = fontParser.GetPostTable();
isFontSpecific = fontParser.GetCmapTable().fontSpecific;
kerning = fontParser.ReadKerning(head.unitsPerEm);
bBoxes = fontParser.ReadBbox(head.unitsPerEm);
// font names group
fontNames = fontParser.GetFontNames();
// font metrics group
fontMetrics.SetUnitsPerEm(head.unitsPerEm);
fontMetrics.UpdateBbox(head.xMin, head.yMin, head.xMax, head.yMax);
fontMetrics.SetNumberOfGlyphs(fontParser.ReadNumGlyphs());
fontMetrics.SetGlyphWidths(fontParser.GetGlyphWidthsByIndex());
fontMetrics.SetTypoAscender(os_2.sTypoAscender);
fontMetrics.SetTypoDescender(os_2.sTypoDescender);
fontMetrics.SetCapHeight(os_2.sCapHeight);
fontMetrics.SetXHeight(os_2.sxHeight);
fontMetrics.SetItalicAngle(post.italicAngle);
fontMetrics.SetAscender(hhea.Ascender);
fontMetrics.SetDescender(hhea.Descender);
fontMetrics.SetLineGap(hhea.LineGap);
fontMetrics.SetWinAscender(os_2.usWinAscent);
fontMetrics.SetWinDescender(os_2.usWinDescent);
fontMetrics.SetAdvanceWidthMax(hhea.advanceWidthMax);
fontMetrics.SetUnderlinePosition((post.underlinePosition - post.underlineThickness) / 2);
fontMetrics.SetUnderlineThickness(post.underlineThickness);
fontMetrics.SetStrikeoutPosition(os_2.yStrikeoutPosition);
fontMetrics.SetStrikeoutSize(os_2.yStrikeoutSize);
fontMetrics.SetSubscriptOffset(-os_2.ySubscriptYOffset);
fontMetrics.SetSubscriptSize(os_2.ySubscriptYSize);
fontMetrics.SetSuperscriptOffset(os_2.ySuperscriptYOffset);
fontMetrics.SetSuperscriptSize(os_2.ySuperscriptYSize);
fontMetrics.SetIsFixedPitch(post.isFixedPitch);
// font identification group
String[][] ttfVersion = fontNames.GetNames(5);
if (ttfVersion != null)
{
fontIdentification.SetTtfVersion(ttfVersion[0][3]);
}
String[][] ttfUniqueId = fontNames.GetNames(3);
if (ttfUniqueId != null)
{
fontIdentification.SetTtfVersion(ttfUniqueId[0][3]);
}
byte[] pdfPanose = new byte[12];
pdfPanose[1] = (byte)(os_2.sFamilyClass);
pdfPanose[0] = (byte)(os_2.sFamilyClass >> 8);
Array.Copy(os_2.panose, 0, pdfPanose, 2, 10);
fontIdentification.SetPanose(pdfPanose);
IDictionary <int, int[]> cmap = GetActiveCmap();
int[] glyphWidths = fontParser.GetGlyphWidthsByIndex();
int numOfGlyphs = fontMetrics.GetNumberOfGlyphs();
unicodeToGlyph = new LinkedDictionary <int, Glyph>(cmap.Count);
codeToGlyph = new LinkedDictionary <int, Glyph>(numOfGlyphs);
avgWidth = 0;
foreach (int charCode in cmap.Keys)
{
int index = cmap.Get(charCode)[0];
if (index >= numOfGlyphs)
{
ILog LOGGER = LogManager.GetLogger(typeof(iText.IO.Font.TrueTypeFont));
LOGGER.Warn(MessageFormatUtil.Format(iText.IO.LogMessageConstant.FONT_HAS_INVALID_GLYPH, GetFontNames().GetFontName
(), index));
continue;
}
Glyph glyph = new Glyph(index, glyphWidths[index], charCode, bBoxes != null ? bBoxes[index] : null);
unicodeToGlyph.Put(charCode, glyph);
// This is done on purpose to keep the mapping to glyphs with smaller unicode values, in contrast with
// larger values which often represent different forms of other characters.
if (!codeToGlyph.ContainsKey(index))
{
codeToGlyph.Put(index, glyph);
}
avgWidth += glyph.GetWidth();
}
FixSpaceIssue();
for (int index = 0; index < glyphWidths.Length; index++)
{
if (codeToGlyph.ContainsKey(index))
{
continue;
}
Glyph glyph = new Glyph(index, glyphWidths[index], -1);
codeToGlyph.Put(index, glyph);
avgWidth += glyph.GetWidth();
}
if (codeToGlyph.Count != 0)
{
avgWidth /= codeToGlyph.Count;
}
ReadGdefTable();
ReadGsubTable();
ReadGposTable();
isVertical = false;
}
/// <exception cref="System.IO.IOException"/>
private static FontProgramDescriptor FetchOpenTypeFontDescriptor(OpenTypeParser fontParser)
{
fontParser.LoadTables(false);
return(new FontProgramDescriptor(fontParser.GetFontNames(), fontParser.GetPostTable().italicAngle, fontParser
.GetPostTable().isFixedPitch));
}