public virtual bool IsSkip(int glyph, int flag)
{
if (glyphClass != null && (flag & (FLAG_IGNORE_BASE | FLAG_IGNORE_LIGATURE | FLAG_IGNORE_MARK)) != 0)
{
int cla = glyphClass.GetOtfClass(glyph);
if (cla == OtfClass.GLYPH_BASE && (flag & FLAG_IGNORE_BASE) != 0)
{
return(true);
}
if (cla == OtfClass.GLYPH_MARK && (flag & FLAG_IGNORE_MARK) != 0)
{
return(true);
}
if (cla == OtfClass.GLYPH_LIGATURE && (flag & FLAG_IGNORE_LIGATURE) != 0)
{
return(true);
}
}
int markAttachmentType = (flag >> 8);
// If MarkAttachmentType is non-zero, then mark attachment classes must be defined in the
// Mark Attachment Class Definition Table in the GDEF table. When processing glyph sequences,
// a lookup must ignore any mark glyphs that are not in the specified mark attachment class;
// only marks of the specified type are processed.
if (markAttachmentType != 0 && glyphClass != null)
{
int currentGlyphClass = glyphClass.GetOtfClass(glyph);
// Will be 0 in case the class is not defined for this particular glyph
int glyphMarkAttachmentClass = markAttachmentClass != null?markAttachmentClass.GetOtfClass(glyph) : 0;
return(currentGlyphClass == OtfClass.GLYPH_MARK && glyphMarkAttachmentClass != markAttachmentType);
}
return(false);
}
public virtual bool IsSkip(int glyph, int flag)
{
if (glyphClass != null && (flag & (FLAG_IGNORE_BASE | FLAG_IGNORE_LIGATURE | FLAG_IGNORE_MARK)) != 0)
{
int cla = glyphClass.GetOtfClass(glyph);
if (cla == OtfClass.GLYPH_BASE && (flag & FLAG_IGNORE_BASE) != 0)
{
return(true);
}
if (cla == OtfClass.GLYPH_MARK && (flag & FLAG_IGNORE_MARK) != 0)
{
return(true);
}
if (cla == OtfClass.GLYPH_LIGATURE && (flag & FLAG_IGNORE_LIGATURE) != 0)
{
return(true);
}
}
if (markAttachmentClass != null && markAttachmentClass.GetOtfClass(glyph) > 0 && (flag >> 8) > 0)
{
return(markAttachmentClass.GetOtfClass(glyph) != (flag >> 8));
}
return(false);
}
public override bool TransformOne(GlyphLine line)
{
if (line.idx >= line.end || line.idx < line.start)
{
return(false);
}
Glyph g1 = line.Get(line.idx);
if (!coverageSet.Contains(g1.GetCode()))
{
return(false);
}
int c1 = classDef1.GetOtfClass(g1.GetCode());
GposLookupType2.PairValueFormat[] pvs = posSubs.Get(c1);
if (pvs == null)
{
return(false);
}
OpenTableLookup.GlyphIndexer gi = new OpenTableLookup.GlyphIndexer();
gi.line = line;
gi.idx = line.idx;
gi.NextGlyph(openReader, lookupFlag);
if (gi.glyph == null)
{
return(false);
}
Glyph g2 = gi.glyph;
int c2 = classDef2.GetOtfClass(g2.GetCode());
if (c2 >= pvs.Length)
{
return(false);
}
GposLookupType2.PairValueFormat pv = pvs[c2];
line.Set(line.idx, new Glyph(g1, 0, 0, pv.first.XAdvance, pv.first.YAdvance, 0));
line.Set(gi.idx, new Glyph(g2, 0, 0, pv.second.XAdvance, pv.second.YAdvance, 0));
line.idx = gi.idx;
return(true);
}