//--------------------------------------------------------------------------------------------------
void IDrawingRenderer.EndPath()
{
if (_ContentBuilder.HasContent)
{
_ContentBuilder.EndPath();
_Content.Add(_ContentBuilder.Finish());
}
_ContentBuilder = new PdfContentBuilder();
}
//--------------------------------------------------------------------------------------------------
internal bool Update(GlyphTypeface glyphTypeface, ICollection <ushort> glyphs, ref string finalFontName)
{
// Write font file to embed
var bytes = glyphTypeface.ComputeSubset(glyphs);
if (bytes?.Length > 0)
{
_FontStream.Add(bytes);
_FontStream.Attributes["Length1"] = bytes.Length;
Attributes["FontFile2"] = _FontStream;
finalFontName = $"AAAAAA+{finalFontName}";
_HasFontFile = true;
}
Attributes["FontName"] = $"/{finalFontName}";
Attributes["FontFamily"] = $"({glyphTypeface.FamilyNames[CultureInfo.GetCultureInfo("en-us")]})";
Attributes["FontWeight"] = $"{glyphTypeface.Weight.ToOpenTypeWeight()}";
Attributes["FontStretch"] = $"/{glyphTypeface.Stretch}";
// Set attributes
var flags = glyphTypeface.Symbol ? Flags.Symbolic : Flags.Nonsymbolic;
if (glyphTypeface.Style == FontStyles.Italic)
{
flags = flags.Added(Flags.Italic);
}
Attributes["Flags"] = (int)flags;
Attributes["FontBBox"] = new[]
{
// Left
-(glyphs.Max(glyph => glyphTypeface.LeftSideBearings[glyph]) * 1000.0).ToRoundedInt(),
// Bottom
-(glyphs.Max(glyph => glyphTypeface.DistancesFromHorizontalBaselineToBlackBoxBottom[glyph]) * 1000.0).ToRoundedInt(),
// Right
(glyphs.Max(glyph => (glyphTypeface.AdvanceWidths[glyph] + glyphTypeface.RightSideBearings[glyph]) * 1000.0)).ToRoundedInt(),
// Top
(glyphTypeface.Baseline * 1000.0).ToRoundedInt() // Top
};
Attributes["ItalicAngle"] = glyphTypeface.Style == FontStyles.Italic ? -75 : 0;
Attributes["Ascent"] = (glyphTypeface.Baseline * 1000.0).ToRoundedInt();
Attributes["Descent"] = ((glyphTypeface.Baseline - glyphTypeface.Height) * 1000.0).ToRoundedInt();
Attributes["CapHeight"] = (glyphTypeface.CapsHeight * 1000.0).ToRoundedInt();
Attributes["XHeight"] = (glyphTypeface.XHeight * 1000.0).ToRoundedInt();
// StemV seems to be not used.
// https://stackoverflow.com/questions/35485179/stemv-value-of-the-truetype-font
Attributes["StemV"] = 80;
Attributes["StemH"] = 80;
return(true);
}
