public override bool TransformOne(GlyphLine line)
{
if (line.idx >= line.end)
{
return(false);
}
Glyph g = line.Get(line.idx);
bool changed = false;
if (!openReader.IsSkip(g.GetCode(), lookupFlag))
{
int[] substSequence = substMap.Get(g.GetCode());
if (substSequence != null)
{
// The use of multiple substitution for deletion of an input glyph is prohibited. GlyphCount should always be greater than 0.
if (substSequence.Length > 0)
{
line.SubstituteOneToMany(openReader, substSequence);
changed = true;
}
}
}
line.idx++;
return(changed);
}
public override bool TransformOne(GlyphLine line)
{
if (line.idx >= line.end || line.idx < line.start)
{
return(false);
}
bool changed = false;
Glyph g1 = line.Get(line.idx);
IDictionary <int, GposLookupType2.PairValueFormat> m = gposMap.Get(g1.GetCode());
if (m != null)
{
OpenTableLookup.GlyphIndexer gi = new OpenTableLookup.GlyphIndexer();
gi.line = line;
gi.idx = line.idx;
gi.NextGlyph(openReader, lookupFlag);
if (gi.glyph != null)
{
GposLookupType2.PairValueFormat pv = m.Get(gi.glyph.GetCode());
if (pv != null)
{
Glyph g2 = gi.glyph;
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;
changed = true;
}
}
}
return(changed);
}
public override bool TransformOne(GlyphLine line) {
if (line.idx >= line.end) {
return false;
}
Glyph g = line.Get(line.idx);
bool changed = false;
if (!openReader.IsSkip(g.GetCode(), lookupFlag)) {
int substCode = substMap.Get(g.GetCode());
// there is no need to substitute a symbol with itself
if (substCode != 0 && substCode != g.GetCode()) {
line.SubstituteOneToOne(openReader, substCode);
changed = true;
}
}
line.idx++;
return changed;
}
public override bool TransformOne(GlyphLine line)
{
//TODO >
if (line.idx >= line.end)
{
return(false);
}
bool changed = false;
Glyph g = line.Get(line.idx);
bool match = false;
if (ligatures.ContainsKey(g.GetCode()) && !openReader.IsSkip(g.GetCode(), lookupFlag))
{
OpenTableLookup.GlyphIndexer gidx = new OpenTableLookup.GlyphIndexer();
gidx.line = line;
IList <int[]> ligs = ligatures.Get(g.GetCode());
foreach (int[] lig in ligs)
{
match = true;
gidx.idx = line.idx;
for (int j = 1; j < lig.Length; ++j)
{
gidx.NextGlyph(openReader, lookupFlag);
if (gidx.glyph == null || gidx.glyph.GetCode() != lig[j])
{
match = false;
break;
}
}
if (match)
{
line.SubstituteManyToOne(openReader, lookupFlag, lig.Length - 1, lig[0]);
break;
}
}
}
if (match)
{
changed = true;
}
line.idx++;
return(changed);
}
public override bool TransformOne(GlyphLine line)
{
if (line.idx >= line.end)
{
return(false);
}
Glyph g = line.Get(line.idx);
bool changed = false;
if (!openReader.IsSkip(g.GetCode(), lookupFlag))
{
int substCode = substMap.Get(g.GetCode());
if (substCode != 0)
{
line.SubstituteOneToOne(openReader, substCode);
changed = true;
}
}
line.idx++;
return(changed);
}
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);
}
/// <summary>Gets a most preferable context rule that matches the line at current position.</summary>
/// <remarks>
/// Gets a most preferable context rule that matches the line at current position. If no matching context rule is found,
/// it returns null.
/// <br /><br />
/// NOTE: if matching context rule is found, the <code>GlyphLine.start</code> and <code>GlyphLine.end</code> will be
/// changed in such way, that they will point at start and end of the matching context glyph sequence inside the glyph line.
/// </remarks>
/// <param name="line">a line, which is to be checked if it matches some context.</param>
/// <returns>matching context rule or null, if none was found.</returns>
public virtual ContextualSubstRule GetMatchingContextRule(GlyphLine line)
{
if (line.idx >= line.end)
{
return(null);
}
Glyph g = line.Get(line.idx);
IList <ContextualSubstRule> rules = GetSetOfRulesForStartGlyph(g.GetCode());
foreach (ContextualSubstRule rule in rules)
{
int lastGlyphIndex = CheckIfContextMatch(line, rule);
if (lastGlyphIndex != -1)
{
line.start = line.idx;
line.end = lastGlyphIndex + 1;
return(rule);
}
}
return(null);
}
