public SubTable GetSubTable(uint i)
{
SubTable st = null;
SubTableHeader sth = GetSubTableHeader(i);
if (sth != null)
{
if (sth.GetFormat() == 0)
{
uint offsetSubTable = GetSubTableHeaderOffset(i);
st = new SubTableFormat0(offsetSubTable, m_bufTable);
}
else if (sth.GetFormat() == 2)
{
}
}
return(st);
}
/************************
* public methods
*/
public bool Validate(Validator v, OTFontVal fontOwner)
{
bool bRet = true;
if (v.PerformTest(T.kern_TableVersion))
{
if (version == 0)
{
v.Pass(T.kern_TableVersion, P.kern_P_TableVersion, m_tag);
}
else
{
v.Error(T.kern_TableVersion, E.kern_E_TableVersion, m_tag, "version = " + version.ToString() + ", unrecognized version #, no further tests can be performed");
return(false);
}
}
if (v.PerformTest(T.kern_NumSubtables))
{
if (nTables != 0)
{
v.Pass(T.kern_NumSubtables, P.kern_P_NumSubTables, m_tag, nTables.ToString());
}
else
{
v.Error(T.kern_NumSubtables, E.kern_E_NumSubTables, m_tag);
bRet = false;
}
}
if (v.PerformTest(T.kern_SubtableFormats))
{
bool bFormatsOk = true;
for (uint i = 0; i < nTables; i++)
{
SubTableHeader sth = GetSubTableHeader(i);
if (sth != null)
{
if (sth.GetFormat() != 0 && sth.GetFormat() != 2)
{
v.Error(T.kern_SubtableFormats, E.kern_E_SubtableFormats, m_tag, "subtable #" + i + ", format " + sth.GetFormat());
bFormatsOk = false;
bRet = false;
}
}
else
{
v.Error(T.kern_SubtableFormats, E.kern_E_SubTableExtendsPastEOT, m_tag, "subtable #" + i);
bFormatsOk = false;
bRet = false;
break;
}
}
if (bFormatsOk)
{
v.Pass(T.kern_SubtableFormats, P.kern_P_SubtableFormats, m_tag);
}
}
if (!bRet)
{
v.Warning(T.kern_SubtableFormats, W._TEST_W_OtherErrorsInTable, m_tag, "kern table appears to be corrupt. No further tests will be performed.");
return(bRet);
}
if (v.PerformTest(T.kern_SubtableLength))
{
bool bLengthsOk = true;
for (uint i = 0; i < nTables; i++)
{
SubTable st = this.GetSubTable(i);
if (st.length != st.CalculatedLength())
{
v.Error(T.kern_SubtableLength, E.kern_E_SubtableLength, m_tag, "subtable #" + i + ", length = " + st.length + ", calculated length = " + st.CalculatedLength());
bLengthsOk = false;
bRet = false;
}
}
if (bLengthsOk)
{
v.Pass(T.kern_SubtableLength, P.kern_P_SubtableLengths, m_tag);
}
}
if (v.PerformTest(T.kern_CoverageReservedBits))
{
bool bReservedOk = true;
for (uint i = 0; i < nTables; i++)
{
SubTable st = this.GetSubTable(i);
if ((st.coverage & 0xf0) != 0)
{
bReservedOk = false;
v.Error(T.kern_CoverageReservedBits, E.kern_E_ReservedCoverageBits, m_tag, "subtable #" + i);
bRet = false;
break;
}
}
if (bReservedOk)
{
v.Pass(T.kern_CoverageReservedBits, P.kern_P_ReservedCoverageBits, m_tag);
}
}
if (v.PerformTest(T.kern_Format0_SearchFields))
{
bool bBinaryFieldsOk = true;
for (uint i = 0; i < nTables; i++)
{
SubTable st = this.GetSubTable(i);
if (st.version == 0)
{
SubTableFormat0 stf0 = (SubTableFormat0)st;
ushort nPairs = stf0.nPairs;
ushort sizeofEntry = 6;
if (nPairs != 0)
{
ushort CalculatedSearchRange = (ushort)(util.MaxPower2LE(nPairs) * sizeofEntry);
ushort CalculatedEntrySelector = util.Log2(util.MaxPower2LE(nPairs));
ushort CalculatedRangeShift = (ushort)((nPairs - util.MaxPower2LE(nPairs)) * sizeofEntry);
if (stf0.searchRange != CalculatedSearchRange)
{
string s = "subtable #" + i
+ ", calc = " + CalculatedSearchRange
+ ", actual = " + stf0.searchRange;
v.Error(T.kern_Format0_SearchFields, E.kern_E_Format0_searchRange, m_tag, s);
bBinaryFieldsOk = false;
bRet = false;
}
if (stf0.entrySelector != CalculatedEntrySelector)
{
string s = "subtable #" + i
+ ", calc = " + CalculatedEntrySelector
+ ", actual = " + stf0.entrySelector;
v.Error(T.kern_Format0_SearchFields, E.kern_E_Format0_entrySelector, m_tag, s);
bBinaryFieldsOk = false;
bRet = false;
}
if (stf0.rangeShift != CalculatedRangeShift)
{
string s = "subtable #" + i
+ ", calc = " + CalculatedRangeShift
+ ", actual = " + stf0.rangeShift;
v.Error(T.kern_Format0_SearchFields, E.kern_E_Format0_rangeShift, m_tag, s);
bBinaryFieldsOk = false;
bRet = false;
}
}
else
{
// cannot validate fields since they are undefined when nPairs is zero
v.Warning(T.kern_Format0_SearchFields, W.kern_W_Format0_SearchFields, m_tag, "subtable #" + i + ", nPairs = " + stf0.nPairs);
bBinaryFieldsOk = false;
}
}
}
if (bBinaryFieldsOk)
{
v.Pass(T.kern_Format0_SearchFields, P.kern_P_Format0_SearchFields, m_tag);
}
}
if (v.PerformTest(T.kern_Format0_GlyphIDs))
{
for (uint i = 0; i < nTables; i++)
{
SubTable st = this.GetSubTable(i);
if (st.version == 0)
{
bool bGlyphIDsOk = true;
SubTableFormat0 stf0 = (SubTableFormat0)st;
for (int iPair = 0; iPair < stf0.nPairs; iPair++)
{
ushort left = 0, right = 0;
short kernvalue = 0;
stf0.GetKerningPairAndValue(iPair, ref left, ref right, ref kernvalue);
ushort numGlyphs = fontOwner.GetMaxpNumGlyphs();
if (left >= numGlyphs)
{
v.Error(T.kern_Format0_GlyphIDs, E.kern_E_Format0_GlyphIDs, m_tag, "kern pair[" + iPair + "]: left = " + left);
bGlyphIDsOk = false;
bRet = false;
}
if (right >= numGlyphs)
{
v.Error(T.kern_Format0_GlyphIDs, E.kern_E_Format0_GlyphIDs, m_tag, "kern pair[" + iPair + "]: right = " + right);
bGlyphIDsOk = false;
bRet = false;
}
}
if (bGlyphIDsOk)
{
v.Pass(T.kern_Format0_GlyphIDs, P.kern_P_Format0_GlyphIDs, m_tag);
}
}
}
}
if (v.PerformTest(T.kern_Format0_Values))
{
for (uint i = 0; i < nTables; i++)
{
SubTable st = this.GetSubTable(i);
if (st.version == 0)
{
SubTableFormat0 stf0 = (SubTableFormat0)st;
Table_hmtx hmtxTable = (Table_hmtx)fontOwner.GetTable("hmtx");
if (hmtxTable != null)
{
bool bValuesOk = true;
for (int iPair = 0; iPair < stf0.nPairs; iPair++)
{
ushort left = 0, right = 0;
short kernvalue = 0;
stf0.GetKerningPairAndValue(iPair, ref left, ref right, ref kernvalue);
short absKernValue = Math.Abs(kernvalue);
Table_hmtx.longHorMetric lhmLeft = null;
Table_hmtx.longHorMetric lhmRight = null;
try {
lhmLeft = hmtxTable.GetOrMakeHMetric(left, fontOwner);
lhmRight = hmtxTable.GetOrMakeHMetric(right, fontOwner);
}
catch (Exception e)
{
v.ApplicationError(T.kern_Format0_Values, E._Table_E_Exception, m_tag, "GetOrMakeHMetric:" + e.Message);
bValuesOk = false;
bRet = false;
break;
}
if (lhmLeft == null || lhmRight == null)
{
v.ApplicationError(T.kern_Format0_Values, E._Table_E_Exception, m_tag, "hmtx Left or Right null");
bValuesOk = false;
bRet = false;
break;
}
if (absKernValue > lhmLeft.advanceWidth && absKernValue > lhmRight.advanceWidth)
{
v.Error(T.kern_Format0_Values, E.kern_E_Format0_Values, m_tag, "kern pair[" + iPair + "]: left id = " + left + ", right id = " + right + ", value = " + kernvalue);
bValuesOk = false;
bRet = false;
}
}
if (bValuesOk)
{
v.Pass(T.kern_Format0_Values, P.kern_P_Format0_Values, m_tag);
}
}
}
}
}
if (v.PerformTest("kern_Format0_IDsInCmap"))
{
for (uint i = 0; i < nTables; i++)
{
SubTable st = this.GetSubTable(i);
if (st.version == 0)
{
SubTableFormat0 stf0 = (SubTableFormat0)st;
Table_cmap cmapTable = (Table_cmap)fontOwner.GetTable("cmap");
if (cmapTable != null)
{
Table_cmap.Subtable cmapSubtable = cmapTable.GetSubtable(3, 10);
if (cmapSubtable == null)
{
cmapSubtable = cmapTable.GetSubtable(3, 1);
}
if (cmapSubtable == null)
{
Table_cmap.EncodingTableEntry ete = cmapTable.GetEncodingTableEntry(0);
cmapSubtable = cmapTable.GetSubtable(ete);
}
if (cmapSubtable != null)
{
uint [] map = cmapSubtable.GetMap();
bool bAllIDsInCmap = true;
for (int iPair = 0; iPair < stf0.nPairs; iPair++)
{
ushort left = 0, right = 0;
short kernvalue = 0;
stf0.GetKerningPairAndValue(iPair, ref left, ref right, ref kernvalue);
bool bFoundLeft = false;
bool bFoundRight = false;
for (int j = 0; j < map.Length; j++)
{
if (left == map[j])
{
bFoundLeft = true;
break;
}
}
for (int j = 0; j < map.Length; j++)
{
if (right == map[j])
{
bFoundRight = true;
break;
}
}
if (bFoundLeft == false)
{
v.Error(T.kern_Format0_IDsInCmap, E.kern_E_Format0_GlyphIdInCmap, m_tag, "kern pair[" + iPair + "]: left id = " + left);
bAllIDsInCmap = false;
bRet = false;
}
if (bFoundRight == false)
{
v.Error(T.kern_Format0_IDsInCmap, E.kern_E_Format0_GlyphIdInCmap, m_tag, "kern pair[" + iPair + "]: right id = " + right);
bAllIDsInCmap = false;
bRet = false;
}
}
if (bAllIDsInCmap)
{
v.Pass(T.kern_Format0_IDsInCmap, P.kern_P_Format0_GlyphIdInCmap, m_tag);
}
}
}
}
}
}
return(bRet);
}
public SubTable GetSubTable(uint i)
{
SubTable st = null;
SubTableHeader sth = GetSubTableHeader(i);
if (sth != null)
{
if (sth.GetFormat() == 0)
{
uint offsetSubTable = GetSubTableHeaderOffset(i);
st = new SubTableFormat0(offsetSubTable, m_bufTable);
}
else if (sth.GetFormat() == 2)
{
}
}
return st;
}
