static public glyph_composite GetCompositeGlyphLogicalData(header h)
{
glyph_composite gc = null;
CompositeGlyph cg = h.GetCompositeGlyph();
if (cg != null)
{
// glyph is a composite glyph
gc = new glyph_composite(h.xMin, h.yMin, h.xMax, h.yMax);
// copy any hinting instructions
if (cg.AnyComponentsHaveInstructions())
{
ushort nInstructions = cg.GetNumInstructions();
gc.m_arrInstructions = new byte[nInstructions];
for (uint i = 0; i < nInstructions; i++)
{
gc.m_arrInstructions[i] = cg.GetInstruction(i);
}
}
while (cg != null)
{
glyph_composite.component cc = new glyph_composite.component();
cc.flags = cg.flags;
cc.glyphid = cg.glyphIndex;
cc.arg1 = cg.arg1;
cc.arg2 = cg.arg2;
if ((cg.flags & (ushort)CompositeGlyph.Flags.WE_HAVE_A_SCALE) != 0)
{
cc.scale = cg.scale;
}
else if ((cg.flags & (ushort)CompositeGlyph.Flags.WE_HAVE_AN_X_AND_Y_SCALE) != 0)
{
cc.xscale = cg.xscale;
cc.yscale = cg.yscale;
}
else if ((cg.flags & (ushort)CompositeGlyph.Flags.WE_HAVE_A_TWO_BY_TWO) != 0)
{
cc.xscale_2x2 = cg.xscale_2x2;
cc.scale01_2x2 = cg.scale01_2x2;
cc.scale10_2x2 = cg.scale10_2x2;
cc.yscale_2x2 = cg.yscale_2x2;
}
gc.m_arrComponents.Add(cc);
cg = cg.GetNextCompositeGlyph();
}
}
return(gc);
}
public uint CalcLength()
{
uint length = 0;
if (AnyComponentsHaveInstructions())
{
length += (uint)2 + GetNumInstructions();
}
CompositeGlyph nextCG = this;
while (nextCG != null)
{
length += nextCG.GetCompositeGlyphLength();
nextCG = nextCG.GetNextCompositeGlyph();
}
return(length);
}
public ushort GetNumInstructions()
{
ushort nInstructions = 0;
if (AnyComponentsHaveInstructions())
{
// instructions follow the last component
CompositeGlyph lastCG = this;
CompositeGlyph nextCG = GetNextCompositeGlyph();
while (nextCG != null)
{
lastCG = nextCG;
nextCG = lastCG.GetNextCompositeGlyph();
}
uint nOffset = lastCG.m_offsetCompositeGlyph + lastCG.GetCompositeGlyphLength();
nInstructions = m_bufTable.GetUshort(nOffset);
}
return(nInstructions);
}
public byte GetInstruction(uint i)
{
byte byteInstruction = 0;
ushort nInstructions = 0;
if (AnyComponentsHaveInstructions())
{
// instructions follow the last component
CompositeGlyph lastCG = this;
CompositeGlyph nextCG = GetNextCompositeGlyph();
while (nextCG != null)
{
lastCG = nextCG;
nextCG = lastCG.GetNextCompositeGlyph();
}
uint nOffset = lastCG.m_offsetCompositeGlyph + lastCG.GetCompositeGlyphLength();
nInstructions = m_bufTable.GetUshort(nOffset);
if (i < nInstructions)
{
byteInstruction = m_bufTable.GetByte(nOffset + 2 + i);
}
else
{
throw new ArgumentException();
}
}
else
{
throw new ApplicationException("WE_HAVE_INSTRUCTIONS flag is clear");
}
return(byteInstruction);
}
public bool AnyComponentsHaveInstructions()
{
bool bInstructions = false;
if ((flags & (uint)Flags.WE_HAVE_INSTRUCTIONS) != 0)
{
bInstructions = true;
}
else
{
CompositeGlyph nextCG = GetNextCompositeGlyph();
while (nextCG != null)
{
if ((nextCG.flags & (uint)Flags.WE_HAVE_INSTRUCTIONS) != 0)
{
bInstructions = true;
break;
}
nextCG = nextCG.GetNextCompositeGlyph();
}
}
return(bInstructions);
}
