public void ReadGGC(int indexGlyph,
out Composite comp,
DIAction dia)
{
this.m_validator.DIA=dia;
comp=null;
GConsts.TypeGlyph typeGlyph;
this.ReadTypeGlyph(indexGlyph, out typeGlyph, dia);
if (typeGlyph!=GConsts.TypeGlyph.Composite)
return;
int offsStart, length;
if (!this.m_tableLoca.GetValidateEntryGlyf(indexGlyph,
out offsStart, out length, this.m_validator, this.m_font))
return;
MBOBuffer buffer=this.m_tableGlyf.Buffer;
uint offsCur=(uint)(offsStart+Table_glyf.FieldOffsets.nextAfterHeader);
bool isLast=false;
try
{
Component component;
while (!isLast)
{
ushort flags=buffer.GetUshort(offsCur);
isLast=((flags&(ushort)Table_glyf.MaskFlagComponent.MORE_COMPONENTS)==0);
offsCur+=2;
ushort indGlyphCur=buffer.GetUshort(offsCur); // TODO: save
component=new Component(indGlyphCur);
// TODO: validate indGlyph is in right boundaries
// TODO: add Relations to FManager
offsCur+=2;
bool weHaveAScale=((flags&(ushort)Table_glyf.MaskFlagComponent.WE_HAVE_A_SCALE)!=0);
bool weHaveAnXAndYScale=((flags&(ushort)Table_glyf.MaskFlagComponent.WE_HAVE_AN_X_AND_Y_SCALE)!=0);
bool weHaveATwoByTwo=((flags&(ushort)Table_glyf.MaskFlagComponent.WE_HAVE_A_TWO_BY_TWO)!=0);
int cnt=0;
if (weHaveAScale) cnt++;
if (weHaveAnXAndYScale) cnt++;
if (weHaveATwoByTwo) cnt++;
if (cnt>1)
{
this.m_validator.Error(T.T_NULL,
E.glyf_E_CompositeAmbigousTransform,
(OTTag)"glyf",
"Index Component: "+indGlyphCur);
return;
}
if ((flags&(ushort)Table_glyf.MaskFlagComponent.RESERVED)!=0)
{
this.m_validator.Warning(T.T_NULL,
W.glyf_W_CompositeReservedBit,
(OTTag)"glyf",
"Index Component: "+indGlyphCur);
}
int arg1, arg2;
if ((flags&(ushort)Table_glyf.MaskFlagComponent.ARG_1_AND_2_ARE_WORDS)!=0)
{
arg1=(int)buffer.GetShort(offsCur);
offsCur+=2;
arg2=(int)buffer.GetShort(offsCur);
offsCur+=2;
}
else
{
arg1=(int)buffer.GetSbyte(offsCur);
offsCur+=1;
arg2=(int)buffer.GetSbyte(offsCur);
offsCur+=1;
}
// TODO: validate bounding boxes
// TODO: check that NOT BOTH shift & knots are initialized, but ONE of them IS initialized
// TODO: validate that indKnots (both!) are in the right boundaries
// TODO: validate that a single-point contour in any glyph is used as attachment point in at least one other glyph
if ((flags&(ushort)Table_glyf.MaskFlagComponent.ARGS_ARE_XY_VALUES)!=0)
{
component.Shift=new VecD(arg1,arg2);
}
else
{
component.IndexKnotAttGlyph=arg1;
component.IndexKnotAttComponent=arg2;
}
// TODO: check that matrix is non-degenerated (if not null)
if (weHaveAScale)
{
OTF2Dot14[,] m=new OTF2Dot14[2,2];
m[0,0]=buffer.GetF2Dot14(offsCur);
/*
// for debug only - begin
if (indGlyphCur==272)
{
m[0,0]=new OTF2Dot14(30390);
}
// for debug only - end
*/
offsCur+=2;
m[1,1]=m[0,0];
component.TrOTF2Dot14=m;
}
else if (weHaveAnXAndYScale)
{
OTF2Dot14[,] m=new OTF2Dot14[2,2];
m[0,0]=buffer.GetF2Dot14(offsCur);
offsCur+=2;
m[1,1]=buffer.GetF2Dot14(offsCur);
offsCur+=2;
component.TrOTF2Dot14=m;
}
else if (weHaveATwoByTwo)
{
OTF2Dot14[,] m=new OTF2Dot14[2,2];
m[0,0]=buffer.GetF2Dot14(offsCur);
offsCur+=2;
m[0,1]=buffer.GetF2Dot14(offsCur);
offsCur+=2;
m[1,0]=buffer.GetF2Dot14(offsCur);
offsCur+=2;
m[1,1]=buffer.GetF2Dot14(offsCur);
offsCur+=2;
component.TrOTF2Dot14=m;
}
if ((flags&(ushort)Table_glyf.MaskFlagComponent.WE_HAVE_INSTRUCTIONS)!=0)
{
ushort numInstr=buffer.GetUshort(offsCur);
offsCur+=2;
if (offsCur+numInstr>buffer.GetLength())
{
throw new System.IndexOutOfRangeException();
}
}
if (comp==null)
comp=new Composite();
comp.AddComponent(component);
}
}
catch (System.IndexOutOfRangeException)
{
this.m_validator.Error(
E._GEN_E_OffsetExceedsTableLength,
(OTTag)"glyf");
if (comp != null)
{
comp.ClearDestroy();
comp=null;
}
}
}
internal StatusGV.TypeStatusExec ValidateCompSource(GErrList gerrlist)
{
if (this.bbox!=null)
{
this.bbox.Clear();
this.bbox=null;
}
if (this.comp!=null)
{
this.comp.ClearDestroy();
this.comp=null;
}
if (this.outl!=null)
{
this.outl.ClearDestroy();
this.outl=null;
}
if (this.typeGlyph==GConsts.TypeGlyph.Empty)
{
return StatusGV.TypeStatusExec.Completed;
}
if (this.typeGlyph!=GConsts.TypeGlyph.Composite)
{
//throw new ExceptionGlyph("Glyph","ValidateCompSource",null);
return StatusGV.TypeStatusExec.Aborted;
}
DIAction dia=DIActionBuilder.DIA(gerrlist,"DIAFunc_AddToListUnique");
gerrlist.DIW=new DIWrapperSource(this.index,this.typeGlyph,GScope.TypeGScope._GGB_);
I_IOGlyphs i_IOGlyphs=this.fm.IIOGlyphs;
if (i_IOGlyphs==null)
{
//throw new ExceptionGlyph("Glyph","ValidateCompSource",null);
return StatusGV.TypeStatusExec.Aborted;
}
i_IOGlyphs.ReadGGB(this.index, out this.bbox, dia);
i_IOGlyphs.ReadGGC(this.index, out this.comp, dia);
if (this.comp!=null)
{
this.fm.OnGComposite(this.index);
}
gerrlist.DIW=null;
return StatusGV.TypeStatusExec.Completed;
}
public void ClearRelease()
{
if (this.bbox!=null)
{
this.bbox.Clear();
this.bbox=null;
}
if (this.comp!=null)
{
this.comp.ClearRelease();
this.comp=null;
}
if (this.outl!=null)
{
this.outl.ClearRelease();
this.outl=null;
}
this.index=GConsts.IND_UNINITIALIZED;
this.fm=null;
}
public void ClearDestroy()
{
if (this.bbox!=null)
{
this.bbox.Clear();
this.bbox=null;
}
if (this.comp!=null)
{
this.comp.ClearDestroy();
this.comp=null;
}
if (this.outl!=null)
{
this.outl.ClearDestroy();
this.outl=null;
}
if (this.statusGV!=null)
{
this.statusGV=null;
}
this.index=GConsts.IND_UNINITIALIZED;
this.fm=null;
}
private void CleanUpOnNonCompletedGV(DefsGV.TypeGV typeGV)
{
/*
* TRY/CATCH function
*/
switch (typeGV)
{
case DefsGV.TypeGV.ValidateTypeGlyphSource:
this.typeGlyph=GConsts.TypeGlyph.Undef;
break;
case DefsGV.TypeGV.ValidateSimpSource:
if (this.bbox!=null)
this.bbox=null;
if (this.outl!=null)
{
try
{
this.outl.ClearDestroy();
}
catch(System.Exception)
{
}
this.outl=null;
}
break;
case DefsGV.TypeGV.ValidateCompSource:
if (this.bbox!=null)
this.bbox=null;
if (this.comp!=null)
{
try
{
this.comp.ClearDestroy();
}
catch(System.Exception)
{
}
this.comp=null;
}
break;
case DefsGV.TypeGV.ValidateCompBind:
if (this.outl!=null)
{
try
{
this.outl.ClearDestroy();
}
catch(System.Exception)
{
}
this.outl=null;
}
break;
}
/*
private int index;
private GConsts.TypeGlyph typeGlyph;
BoxD bbox;
Outline outl;
Composite comp;
private FManager fm;
private StatusGV[] statusGV;
*/
}
public Glyph(int indexGlyph, FManager fm)
{
this.fm=fm;
this.index=indexGlyph;
this.typeGlyph=GConsts.TypeGlyph.Uninitialized;
this.bbox=null;
this.outl=null;
this.comp=null;
this.statusGV=new StatusGV[DefsGV.NumTest];
for (int iTest=0; iTest<DefsGV.NumTest; iTest++)
{
this.statusGV[iTest]=new StatusGV();
}
}