void Segment::doMirror(uint16 aMirror)
{
Slot * s;
for (s = m_first; s; s = s->next())
{
unsigned short g = glyphAttr(s->gid(), aMirror);
if (g && (!(dir() & 4) || !glyphAttr(s->gid(), aMirror + 1)))
s->setGlyph(this, g);
}
}
void Segment::appendSlot(int id, int cid, int gid, int iFeats, size_t coffset)
{
Slot *aSlot = newSlot();
if (!aSlot) return;
m_charinfo[id].init(cid);
m_charinfo[id].feats(iFeats);
m_charinfo[id].base(coffset);
const GlyphFace * theGlyph = m_face->glyphs().glyphSafe(gid);
m_charinfo[id].breakWeight(theGlyph ? theGlyph->attrs()[m_silf->aBreak()] : 0);
aSlot->child(NULL);
aSlot->setGlyph(this, gid, theGlyph);
aSlot->originate(id);
aSlot->before(id);
aSlot->after(id);
if (m_last) m_last->next(aSlot);
aSlot->prev(m_last);
m_last = aSlot;
if (!m_first) m_first = aSlot;
if (theGlyph && m_silf->aPassBits())
m_passBits &= theGlyph->attrs()[m_silf->aPassBits()]
| (m_silf->numPasses() > 16 ? (theGlyph->attrs()[m_silf->aPassBits() + 1] << 16) : 0);
}
bool Silf::runGraphite(Segment *seg, uint8 firstPass, uint8 lastPass) const
{
assert(seg != 0);
SlotMap map(*seg);
FiniteStateMachine fsm(map, seg->getFace()->logger());
vm::Machine m(map);
unsigned int initSize = seg->slotCount();
#if !defined GRAPHITE2_NTRACING
json * const dbgout = seg->getFace()->logger();
#endif
if (lastPass == 0)
{
if (firstPass == lastPass)
return true;
lastPass = m_numPasses;
}
for (size_t i = firstPass; i < lastPass; ++i)
{
// bidi and mirroring
if (i == m_bPass)
{
#if !defined GRAPHITE2_NTRACING
if (dbgout)
{
*dbgout << json::item << json::object
<< "id" << -1
<< "slots" << json::array;
seg->positionSlots(0);
for(Slot * s = seg->first(); s; s = s->next())
*dbgout << dslot(seg, s);
*dbgout << json::close
<< "rules" << json::array << json::close
<< json::close;
}
#endif
if (!(seg->dir() & 2))
seg->bidiPass(m_aBidi, seg->dir() & 1, m_aMirror);
else if (m_aMirror)
{
Slot * s;
for (s = seg->first(); s; s = s->next())
{
unsigned short g = seg->glyphAttr(s->gid(), m_aMirror);
if (g && (!(seg->dir() & 4) || !seg->glyphAttr(s->gid(), m_aMirror + 1)))
s->setGlyph(seg, g);
}
}
}
#if !defined GRAPHITE2_NTRACING
if (dbgout)
{
*dbgout << json::item << json::object
<< "id" << i+1
<< "slots" << json::array;
seg->positionSlots(0);
for(Slot * s = seg->first(); s; s = s->next())
*dbgout << dslot(seg, s);
*dbgout << json::close;
}
#endif
// test whether to reorder, prepare for positioning
m_passes[i].runGraphite(m, fsm);
// only subsitution passes can change segment length, cached subsegments are short for their text
if (m.status() != vm::Machine::finished
|| (i < m_pPass && (seg->slotCount() > initSize * MAX_SEG_GROWTH_FACTOR
|| (seg->slotCount() && seg->slotCount() * MAX_SEG_GROWTH_FACTOR < initSize))))
return false;
}
return true;
}
bool Silf::runGraphite(Segment *seg, uint8 firstPass, uint8 lastPass) const
{
assert(seg != 0);
SlotMap map(*seg);
FiniteStateMachine fsm(map);
vm::Machine m(map);
unsigned int initSize = seg->slotCount();
if (lastPass == 0)
{
if (firstPass == lastPass)
return true;
lastPass = m_numPasses;
}
#if !defined GRAPHITE2_NTRACING
if (dbgout)
{
char version[64];
sprintf(version, "%d.%d.%d",
GR2_VERSION_MAJOR, GR2_VERSION_MINOR, GR2_VERSION_BUGFIX);
*dbgout << json::object
<< "version" << version
<< "passes" << json::array;
}
#endif
for (size_t i = firstPass; i < lastPass; ++i)
{
// bidi and mirroring
if (i == m_bPass)
{
#if !defined GRAPHITE2_NTRACING
if (dbgout)
{
*dbgout << json::item << json::object
<< "id" << -1
<< "slots" << json::array;
seg->positionSlots(0);
for(Slot * s = seg->first(); s; s = s->next())
*dbgout << dslot(seg, s);
*dbgout << json::close
<< "rules" << json::array << json::close
<< json::close;
}
#endif
if (!(seg->dir() & 2))
seg->bidiPass(m_aBidi, seg->dir() & 1, m_aMirror);
else if (m_aMirror)
{
Slot * s;
for (s = seg->first(); s; s = s->next())
{
unsigned short g = seg->glyphAttr(s->gid(), m_aMirror);
if (g && (!(seg->dir() & 4) || !seg->glyphAttr(s->gid(), m_aMirror + 1)))
s->setGlyph(seg, g);
}
}
}
#if !defined GRAPHITE2_NTRACING
if (dbgout)
{
*dbgout << json::item << json::object
<< "id" << i+1
<< "slots" << json::array;
seg->positionSlots(0);
for(Slot * s = seg->first(); s; s = s->next())
*dbgout << dslot(seg, s);
*dbgout << json::close;
}
#endif
// test whether to reorder, prepare for positioning
m_passes[i].runGraphite(m, fsm);
// only subsitution passes can change segment length, cached subsegments are short for their text
if (m.status() != vm::Machine::finished
|| (i < m_pPass && (seg->slotCount() > initSize * MAX_SEG_GROWTH_FACTOR
|| (seg->slotCount() && seg->slotCount() * MAX_SEG_GROWTH_FACTOR < initSize))))
return false;
}
#if !defined GRAPHITE2_NTRACING
if (dbgout)
{
*dbgout << json::item
<< json::close // Close up the passes array
<< "output" << json::array;
for(Slot * s = seg->first(); s; s = s->next())
*dbgout << dslot(seg, s);
seg->finalise(0); // Call this here to fix up charinfo back indexes.
*dbgout << json::close
<< "advance" << seg->advance()
<< "chars" << json::array;
for(size_t i = 0, n = seg->charInfoCount(); i != n; ++i)
*dbgout << json::flat << *seg->charinfo(i);
*dbgout << json::close // Close up the chars array
<< json::close; // Clsoe up the segment object
}
#endif
return true;
}