public bool Validate_Format2(Validator v, string sIdentity, Table_EBLC.indexSubTable ist)
{
bool bOk = true;
Table_EBLC.indexSubTableArray ista = ist.GetIndexSubTableArray();
for (ushort idGlyph = ista.firstGlyphIndex; idGlyph <= ista.lastGlyphIndex; idGlyph++)
{
// validate small metrics
smallGlyphMetrics sgm = null;
try {
sgm = GetSmallMetrics(ist, idGlyph, ista.firstGlyphIndex);
}
catch (Exception e)
{
v.ApplicationError(T.EBDT_GlyphImageData, E._Table_E_Exception, m_tag, "EBDT.Format2: " + e.Message);
bOk = false;
return(bOk);
}
if (sgm != null)
{
smallGlyphMetrics_val sgm_val = smallGlyphMetrics_val.CreateFromSmallGlyphMetrics(sgm);
if (!sgm_val.Validate(v, sIdentity + ", idGlyph=" + idGlyph, this))
{
bOk = false;
}
// validate image data
// - this is just bitmap data, any values should be valid
}
}
return(bOk);
}
/************************
* public methods
*/
public bool Validate(Validator v, OTFontVal fontOwner)
{
bool bRet = true;
if (v.PerformTest(T.VDMX_Version))
{
if (version == 0 || version == 1)
{
v.Pass(T.VDMX_Version, P.VDMX_P_Version, m_tag, version.ToString());
}
else
{
v.Error(T.VDMX_Version, E.VDMX_E_Version, m_tag, version.ToString());
bRet = false;
}
}
if (v.PerformTest(T.VDMX_Offsets))
{
bool bOffsetsOk = true;
ushort minPossibleOffset = (ushort)((ushort)FieldOffsets.ratRange + numRatios * 4 + numRatios*2);
ushort maxPossibleOffset = (ushort)GetLength();
for (uint i=0; i<numRatios; i++)
{
ushort offset = GetVdmxGroupOffset(i);
if (offset < minPossibleOffset || offset > maxPossibleOffset)
{
v.Error(T.VDMX_Offsets, E.VDMX_E_InvalidOffset, m_tag, "#" + i + " offset = " + offset);
bOffsetsOk = false;
bRet = false;
}
}
if (bOffsetsOk)
{
v.Pass(T.VDMX_Offsets, P.VDMX_P_Offsets, m_tag);
}
}
if (v.PerformTest(T.VDMX_GroupsInTable))
{
bool bGroupsOk = true;
for (uint i=0; i<numRatios; i++)
{
Vdmx vdmx = GetVdmxGroup(i);
uint EndOffset = (uint)GetVdmxGroupOffset(i) + 4 + (uint)vdmx.recs*6;
if (EndOffset > GetLength())
{
v.Error(T.VDMX_GroupsInTable, E.VDMX_E_GroupsInTable, m_tag, "group# " + i);
bGroupsOk = false;
bRet = false;
}
}
if (bGroupsOk)
{
v.Pass(T.VDMX_GroupsInTable, P.VDMX_P_GroupsInTable, m_tag);
}
}
if (v.PerformTest(T.VDMX_CompareToCalcData))
{
bool bDataOk = true;
bool needtol = false;
RasterInterf.DevMetricsData dmd = null;
try
{
Version ver = fontOwner.GetFile().GetRasterizer().FTVersion;
if ( ver.CompareTo(new Version(2,6,1)) < 0 )
v.Warning(T.VDMX_CompareToCalcData, W.VDMX_W_Need_Newer_FreeType, m_tag,
"Using FreeType Version " + ver + " may not get correct results for VDMX");
dmd = fontOwner.GetCalculatedDevMetrics();
}
catch (InvalidOperationException e)
{
// JJF Figure out what to do. Changed to warning
v.Warning(T.VDMX_CompareToCalcData, W._TEST_W_ErrorInAnotherTable, m_tag, e.Message);
}
catch(Exception e)
{
v.ApplicationError(T.VDMX_CompareToCalcData, E._Table_E_Exception, m_tag, e.Message);
bRet = false;
}
if (dmd != null)
{
for (uint iRatio=0; iRatio<numRatios; iRatio++)
{
Ratios ratio = GetRatioRange(iRatio);
Vdmx group = GetVdmxGroup(iRatio);
for (uint iEntry=0; iEntry<group.recs; iEntry++)
{
Vdmx.vTable vTableEntry = group.GetEntry(iEntry);
if (vTableEntry.yPelHeight <= 255)
{
if (vTableEntry.yPelHeight == dmd.vdmxData.groups[iRatio].entry[vTableEntry.yPelHeight - group.startsz].yPelHeight)
{
if (vTableEntry.yMin != dmd.vdmxData.groups[iRatio].entry[iEntry].yMin
|| vTableEntry.yMax != dmd.vdmxData.groups[iRatio].entry[iEntry].yMax){
int dif = dmd.vdmxData.groups[iRatio].entry[iEntry].yMax - dmd.vdmxData.groups[iRatio].entry[iEntry].yMin;
if (!TestTolerance(dmd.vdmxData.groups[iRatio].entry[iEntry].yMin, vTableEntry.yMin, dif) ||
!TestTolerance(dmd.vdmxData.groups[iRatio].entry[iEntry].yMax, vTableEntry.yMax, dif))
{
String sDetails = "group[" + iRatio + "], entry[" + iEntry + "], yPelHeight = " + vTableEntry.yPelHeight +
", yMin,yMax = " + vTableEntry.yMin + "," + vTableEntry.yMax +
", calculated yMin,yMax = " + dmd.vdmxData.groups[iRatio].entry[iEntry].yMin + "," +
dmd.vdmxData.groups[iRatio].entry[iEntry].yMax;
v.Error(T.VDMX_CompareToCalcData, E.VDMX_E_CalcData, m_tag, sDetails);
bDataOk = false;
}
else
{
needtol = true;
}
}
/*
else
{
String s = "group[" + iRatio + "], yPelHeight = " + vTableEntry.yPelHeight + ", entry OK";
v.DebugMsg(s, m_tag);
}
*/
}
else
{
Debug.Assert(false);
}
}
else
{
String sDetails = "group[" + iRatio + "], entry[" + iEntry + "], yPelHeight = " + vTableEntry.yPelHeight;
v.Error(T.VDMX_CompareToCalcData, E.VDMX_E_yPelHeight_illegal, m_tag, sDetails);
bDataOk = false;
}
}
}
if (bDataOk)
{
if (needtol)
{
String sDetails = "The differences were smaller than the tolerance, so they may well be valid if the VDMX was hand-tuned";
v.Warning(T.VDMX_CompareToCalcData, W.VDMX_W_CalcData, m_tag, sDetails);
}
else
{
v.Pass(T.VDMX_CompareToCalcData, P.VDMX_P_CalcData, m_tag);
}
}
else
{
//v.Error(T.VDMX_CompareToCalcData, E.VDMX_E_CalcData, m_tag);
bRet = false;
}
}
else
{
// Rasterization could not occur for various reasons.
string s = "Unable to get calculated device metrics.";
v.Error(T.VDMX_CompareToCalcData, E.VDMX_E_CalcData, m_tag, s);
bDataOk = false;
bRet = false;
}
}
return bRet;
}
/*****************
* public methods
*/
public bool Validate()
{
bool bRet = true;
int canrast;
Validator v = GetFile().GetValidator();
if (v.PerformTest(T._OFFSET_sfntVersion))
{
uint sfnt = m_OffsetTable.sfntVersion.GetUint();
if (!OTFile.IsValidSfntVersion(sfnt))
{
v.Error(T._OFFSET_sfntVersion, E._OFFSET_E_InvalidSFNT, null, "0x" + sfnt.ToString("x8"));
bRet = false;
}
}
if (v.PerformTest(T._OFFSET_numTables))
{
if (m_OffsetTable.numTables == 0)
{
v.Error(T._OFFSET_numTables, E._OFFSET_E_numTables, null);
bRet = false;
}
else
{
v.Pass(T._OFFSET_numTables, P._OFFSET_P_numTables, null, m_OffsetTable.numTables.ToString());
}
}
if (v.PerformTest(T._OFFSET_BinarySearchFields))
{
ushort numTables = m_OffsetTable.numTables;
ushort CalculatedSearchRange = (ushort)(util.MaxPower2LE(numTables) * 16);
ushort CalculatedEntrySelector = util.Log2(util.MaxPower2LE(numTables));
ushort CalculatedRangeShift = (ushort)(numTables * 16 - CalculatedSearchRange);
bool bBinaryFieldsOk = true;
if (m_OffsetTable.searchRange != CalculatedSearchRange)
{
v.Error(T._OFFSET_BinarySearchFields, E._OFFSET_E_searchRange, null, m_OffsetTable.searchRange.ToString());
bBinaryFieldsOk = false;
bRet = false;
}
if (m_OffsetTable.entrySelector != CalculatedEntrySelector)
{
v.Error(T._OFFSET_BinarySearchFields, E._OFFSET_E_entrySelector, null, m_OffsetTable.entrySelector.ToString());
bBinaryFieldsOk = false;
bRet = false;
}
if (m_OffsetTable.rangeShift != CalculatedRangeShift)
{
v.Error(T._OFFSET_BinarySearchFields, E._OFFSET_E_rangeShift, null, m_OffsetTable.rangeShift.ToString());
bBinaryFieldsOk = false;
bRet = false;
}
if (bBinaryFieldsOk)
{
v.Pass(T._OFFSET_BinarySearchFields, P._OFFSET_P_BinarySearchTables, null);
}
}
bRet &= CheckDirectoryEntriesNonZero(v);
bRet &= CheckTablesInFileAndNotOverlapping(v);
bRet &= CheckNoDuplicateTags(v);
if (v.PerformTest(T._DE_TagsAscendingOrder))
{
bRet &= CheckTagsAscending(v);
}
if (v.PerformTest(T._DE_TagNames))
{
bRet &= CheckTagNames(v);
}
if (v.PerformTest(T._DE_TableAlignment))
{
bRet &= CheckTableAlignment(v);
}
if (v.PerformTest(T._FONT_RequiredTables))
{
bRet &= CheckForRequiredTables(v);
}
if (v.PerformTest(T._FONT_RecommendedTables))
{
bRet &= CheckForRecommendedTables(v);
}
if (v.PerformTest(T._FONT_UnnecessaryTables))
{
bRet &= CheckForNoUnnecessaryTables(v);
}
if (v.PerformTest(T._FONT_OptimalTableOrder))
{
bRet &= CheckForOptimalTableOrder(v);
}
// Validate each table
if (m_OffsetTable != null)
{
for (int i = 0; i < m_OffsetTable.DirectoryEntries.Count; i++)
{
// check to see if user canceled validation
if (v.CancelFlag)
{
break;
}
// get the table
DirectoryEntry de = (DirectoryEntry)m_OffsetTable.DirectoryEntries[i];
OTTable table = GetFile().GetTableManager().GetTable(this, de);
// Will it really happen?
if (GetFile().GetTableManager().GetUnaliasedTableName(de.tag) == "DSIG" && GetFile().IsCollection())
{
continue;
}
if (GetFile().GetTableManager().GetUnaliasedTableName(de.tag) == "glyf" &&
Is_TTC_LaterIdenticalTable("glyf"))
{
v.Info(T.T_NULL, I.glyf_I_IDENTICAL_GLYF_TABLES_IN_TTC, de.tag, "glyf");
continue;
}
if (GetFile().GetTableManager().GetUnaliasedTableName(de.tag) == "EBDT" &&
Is_TTC_LaterIdenticalTable("EBDT"))
{
v.Info(T.T_NULL, I.glyf_I_IDENTICAL_GLYF_TABLES_IN_TTC, de.tag, "EBDT");
continue;
}
// Call the function that validates a single table
bRet &= this.GetFile().ValidateTable(table, v, de, this);
}
}
canrast = TestFontRasterization();
ushort numGlyphs = GetMaxpNumGlyphs();
// rasterization test - BW
v.OnRastTestValidationEvent_BW(true);
if (v.PeformRastTest_BW() && Is_TTC_LaterIdenticalTable("glyf"))
{
v.Info(T.T_NULL, I.glyf_I_IDENTICAL_GLYF_TABLES_IN_TTC, null, "B/W Rasterization");
}
else
if (v.PeformRastTest_BW())
{
if (canrast > 0)
{
try
{
// fetch the rasterizer object and initialize it with this font
RasterInterf ri = GetFile().GetRasterizer();
ri.RasterNewSfnt(GetFile().GetFileStream(), GetFontIndexInFile());
// call the rasterizer
RasterInterf.UpdateProgressDelegate upg = new RasterInterf.UpdateProgressDelegate(v.OnTableProgress);
RasterInterf.RastTestErrorDelegate rted = new RasterInterf.RastTestErrorDelegate(v.OnRastTestError);
int x = v.GetRastTestXRes();
int y = v.GetRastTestYRes();
int [] pointsizes = v.GetRastTestPointSizes();
RastTestTransform rtt = v.GetRastTestTransform();
bRet &= ri.RastTest(
x, y, pointsizes,
rtt.stretchX, rtt.stretchY, rtt.rotation, rtt.skew, rtt.matrix,
true, false, false, 0,
rted, upg, numGlyphs);
if (ri.GetRastErrorCount() == 0)
{
v.Pass(T.T_NULL, P._rast_P_rasterization, null);
}
}
catch (Exception e)
{
v.ApplicationError(T.T_NULL, E._rast_A_ExceptionUnhandled, null, e.Message + e.StackTrace);
}
}
else if (canrast == 0)
{
v.Info(T.T_NULL, I._rast_I_rasterization, null, GetDevMetricsDataError());
}
else
{
v.Error(T.T_NULL, E._rast_E_rasterization, null, GetDevMetricsDataError());
bRet = false;
}
}
else
{
v.Info(I._TEST_I_RastTestNotSelected, null);
}
v.OnRastTestValidationEvent_BW(false);
// rasterization test - Grayscale
v.OnRastTestValidationEvent_Grayscale(true);
if (v.PeformRastTest_Grayscale() && Is_TTC_LaterIdenticalTable("glyf"))
{
v.Info(T.T_NULL, I.glyf_I_IDENTICAL_GLYF_TABLES_IN_TTC, null, "Grayscale Rasterization");
}
else
if (v.PeformRastTest_Grayscale())
{
if (canrast > 0)
{
try
{
// fetch the rasterizer object and initialize it with this font
RasterInterf ri = GetFile().GetRasterizer();
ri.RasterNewSfnt(GetFile().GetFileStream(), GetFontIndexInFile());
// call the rasterizer
RasterInterf.UpdateProgressDelegate upg = new RasterInterf.UpdateProgressDelegate(v.OnTableProgress);
RasterInterf.RastTestErrorDelegate rted = new RasterInterf.RastTestErrorDelegate(v.OnRastTestError);
int x = v.GetRastTestXRes();
int y = v.GetRastTestYRes();
int [] pointsizes = v.GetRastTestPointSizes();
RastTestTransform rtt = v.GetRastTestTransform();
bRet &= ri.RastTest(
x, y, pointsizes,
rtt.stretchX, rtt.stretchY, rtt.rotation, rtt.skew, rtt.matrix,
false, true, false, 0,
rted, upg, numGlyphs);
if (ri.GetRastErrorCount() == 0)
{
v.Pass(T.T_NULL, P._rast_P_rasterization, null);
}
}
catch (Exception e)
{
v.ApplicationError(T.T_NULL, E._rast_A_ExceptionUnhandled, null, e.Message + e.StackTrace);
}
}
else if (canrast == 0)
{
v.Info(T.T_NULL, I._rast_I_rasterization, null, GetDevMetricsDataError());
}
else
{
v.Error(T.T_NULL, E._rast_E_rasterization, null, GetDevMetricsDataError());
bRet = false;
}
}
else
{
v.Info(I._TEST_I_RastTestNotSelected, null);
}
v.OnRastTestValidationEvent_Grayscale(false);
// rasterization test - Cleartype
v.OnRastTestValidationEvent_Cleartype(true);
if (v.PeformRastTest_Cleartype() && Is_TTC_LaterIdenticalTable("glyf"))
{
v.Info(T.T_NULL, I.glyf_I_IDENTICAL_GLYF_TABLES_IN_TTC, null, "Cleartype Rasterization");
}
else
if (v.PeformRastTest_Cleartype())
{
if (canrast > 0)
{
try
{
uint CTFlags = v.GetCleartypeFlags();
// fetch the rasterizer object and initialize it with this font
RasterInterf ri = GetFile().GetRasterizer();
ri.RasterNewSfnt(GetFile().GetFileStream(), GetFontIndexInFile());
// call the rasterizer
RasterInterf.UpdateProgressDelegate upg = new RasterInterf.UpdateProgressDelegate(v.OnTableProgress);
RasterInterf.RastTestErrorDelegate rted = new RasterInterf.RastTestErrorDelegate(v.OnRastTestError);
int x = v.GetRastTestXRes();
int y = v.GetRastTestYRes();
int [] pointsizes = v.GetRastTestPointSizes();
RastTestTransform rtt = v.GetRastTestTransform();
bRet &= ri.RastTest(
x, y, pointsizes,
rtt.stretchX, rtt.stretchY, rtt.rotation, rtt.skew, rtt.matrix,
false, false, true, CTFlags,
rted, upg, numGlyphs);
if (ri.GetRastErrorCount() == 0)
{
v.Pass(T.T_NULL, P._rast_P_rasterization, null);
}
}
catch (Exception e)
{
v.ApplicationError(T.T_NULL, E._rast_A_ExceptionUnhandled, null, e.Message + e.StackTrace);
}
}
else if (canrast == 0)
{
v.Info(T.T_NULL, I._rast_I_rasterization, null, GetDevMetricsDataError());
}
else
{
v.Error(T.T_NULL, E._rast_E_rasterization, null, GetDevMetricsDataError());
bRet = false;
}
}
else
{
v.Info(I._TEST_I_RastTestNotSelected, null);
}
v.OnRastTestValidationEvent_Cleartype(false);
return(bRet);
}
/*****************
* protected methods
*/
/*****************
* public methods
*/
//meant to avoid code repetition (is called from OTFontVal too)
public bool ValidateTable(OTTable table, Validator v, DirectoryEntry de, OTFontVal fontOwner)
{
String tname = GetTableManager().GetUnaliasedTableName(de.tag);
bool bRet = true;
// verify the checksum value from the directory entry matches the checksum for the table
if (!(tname == "DSIG" && IsCollection()))
{
uint calcChecksum = 0;
if (table != null)
{
calcChecksum = table.CalcChecksum();
}
if (de.checkSum != calcChecksum)
{
string s = "table '" + de.tag + "', calc: 0x" + calcChecksum.ToString("x8") + ", font: 0x" + de.checkSum.ToString("x8");
v.Error(T.T_NULL, E._DE_E_ChecksumError, de.tag, s);
bRet = false;
}
}
// verify that table has pad bytes set to zero
if (table != null)
{
uint nBytes = 0;
try {
nBytes = GetNumPadBytesAfterTable(table);
}
catch (Exception e)
{
v.ApplicationError(T.T_NULL, E._Table_E_Exception, de.tag, "GetNumPadBytesAfterTable: " + e.Message);
bRet = false;
}
bool bPadBytesZero = true;
if (nBytes != 0)
{
long PadFilePos = table.GetBuffer().GetFilePos() + table.GetBuffer().GetLength();
byte[] padbuf = ReadBytes(PadFilePos, nBytes);
for (int iByte = 0; iByte < padbuf.Length; iByte++)
{
if (padbuf[iByte] != 0)
{
bPadBytesZero = false;
break;
}
}
}
if (bPadBytesZero == false)
{
v.Warning(T.T_NULL, W._DE_W_PadBytesNotZero, de.tag, "after " + de.tag + " table");
}
}
// ask the table object to validate its data
if (!(tname == "DSIG" && IsCollection()))
{
v.OnTableValidationEvent(de, true);
}
if (table != null)
{
if (v.TestTable(de.tag)) // don't test deselected tables
{
try
{
ITableValidate valtable = (ITableValidate)table;
bRet &= valtable.Validate(v, fontOwner);
}
catch (InvalidCastException e)
{
v.ApplicationError(T.T_NULL, E._Table_E_Exception, table.m_tag, e.ToString());
bRet = false;
}
}
else
{
v.Info(I._Table_I_NotSelected, de.tag);
}
}
else
{
if (de.length == 0)
{
// check if it's a known OT table type since zero length private tables seem allowable
if (TableManager.IsKnownOTTableType(de.tag))
{
v.Error(T.T_NULL, E._Table_E_Invalid, de.tag, "The directory entry length is zero");
bRet = false;
}
}
else if (de.offset == 0)
{
v.Error(T.T_NULL, E._Table_E_Invalid, de.tag, "The directory entry offset is zero");
bRet = false;
}
else if (de.offset > GetFileLength())
{
v.Error(T.T_NULL, E._Table_E_Invalid, de.tag, "The table offset points past end of file");
bRet = false;
}
else if (de.offset + de.length > GetFileLength())
{
v.Error(T.T_NULL, E._Table_E_Invalid, de.tag, "The table extends past end of file");
bRet = false;
}
else
{
v.Error(E._Table_E_Invalid, de.tag);
bRet = false;
}
}
if (!(tname == "DSIG" && IsCollection()))
{
v.OnTableValidationEvent(de, false);
}
return(bRet);
}
/************************
* public methods
*/
public bool Validate(Validator v, OTFontVal fontOwner)
{
bool bRet = true;
ushort numGlyphs = GetNumGlyphs(fontOwner);
if (v.PerformTest(T.hdmx_Version))
{
if (TableVersionNumber == 0)
{
v.Pass(T.hdmx_Version, P.hdmx_P_Version, m_tag);
}
else
{
v.Error(T.hdmx_Version, E.hdmx_E_Version, m_tag, TableVersionNumber.ToString());
bRet = false;
}
}
bool bNumDeviceRecordsOk = true;
if (v.PerformTest(T.hdmx_NumDeviceRecords))
{
if (NumberDeviceRecords >= 0)
{
v.Pass(T.hdmx_NumDeviceRecords, P.hdmx_P_NumDeviceRecords, m_tag, NumberDeviceRecords.ToString());
}
else
{
v.Error(T.hdmx_NumDeviceRecords, E.hdmx_E_NumDeviceRecords_neg, m_tag, NumberDeviceRecords.ToString());
bNumDeviceRecordsOk = false;
bRet = false;
}
}
bool bSizeOk = true;
if (v.PerformTest(T.hdmx_SizeofDeviceRecord))
{
if ((SizeofDeviceRecord & 3) != 0)
{
v.Error(T.hdmx_SizeofDeviceRecord, E.hdmx_E_SizeofDeviceRecord_alignment, m_tag, SizeofDeviceRecord.ToString());
bSizeOk = false;
bRet = false;
}
uint CalculatedSizeofDeviceRecord = CalculateSizeofDeviceRecord(numGlyphs);
if (SizeofDeviceRecord != CalculatedSizeofDeviceRecord)
{
string s = "actual = " + SizeofDeviceRecord + ", calc = " + CalculatedSizeofDeviceRecord;
v.Error(T.hdmx_SizeofDeviceRecord, E.hdmx_E_SizeofDeviceRecord_numGlyphs, m_tag, s);
bSizeOk = false;
bRet = false;
}
if (bSizeOk)
{
v.Pass(T.hdmx_SizeofDeviceRecord, P.hdmx_P_SizeofDeviceRecord, m_tag, SizeofDeviceRecord.ToString());
}
}
bool bLengthOk = true;
if (v.PerformTest(T.hdmx_TableLength))
{
if (bNumDeviceRecordsOk)
{
uint CalculatedTableLength = 8 + (uint)NumberDeviceRecords * CalculateSizeofDeviceRecord(numGlyphs);
if (GetLength() == CalculatedTableLength)
{
v.Pass(T.hdmx_TableLength, P.hdmx_P_TableLength, m_tag);
}
else
{
string s = "actual: " + GetLength() + ", calc: " + CalculatedTableLength;
v.Error(T.hdmx_TableLength, E.hdmx_E_TableLength, m_tag, s);
bLengthOk = false;
bRet = false;
}
}
else
{
v.Warning(T.hdmx_TableLength, W._TEST_W_OtherErrorsInTable, m_tag, "unable to validate table length");
}
}
if (v.PerformTest(T.hdmx_DeviceRecordPadBytesZero))
{
if (bSizeOk && bLengthOk & bNumDeviceRecordsOk)
{
uint unpaddedLength = (uint)numGlyphs + 2;
if ((unpaddedLength & 3) == 0)
{
v.Pass(T.hdmx_DeviceRecordPadBytesZero, P.hdmx_P_DeviceRecordPadBytes_none, m_tag);
}
else
{
bool bPadOk = true;
if (NumberDeviceRecords > 1)
{
for (uint i=0; i<NumberDeviceRecords; i++)
{
DeviceRecord dr = GetDeviceRecord(i, numGlyphs);
for (uint j=0; j<dr.GetNumPadBytes(); j++)
{
if (dr.GetPadByte(j) != 0)
{
bPadOk = false;
break;
}
}
}
}
if (bPadOk)
{
v.Pass(T.hdmx_DeviceRecordPadBytesZero, P.hdmx_P_DeviceRecordPadBytes_zero, m_tag);
}
else
{
v.Error(T.hdmx_DeviceRecordPadBytesZero, E.hdmx_E_DeviceRecordPadBytes_nonzero, m_tag);
bRet = false;
}
}
}
else
{
v.Warning(T.hdmx_DeviceRecordPadBytesZero, W._TEST_W_OtherErrorsInTable, m_tag, "unable to validate that device record padding bytes are zero");
}
}
if (v.PerformTest(T.hdmx_SortedOrder))
{
if (bSizeOk && bLengthOk && bNumDeviceRecordsOk)
{
bool bSortOk = true;
if (NumberDeviceRecords > 1)
{
DeviceRecord drCurr = GetDeviceRecord(0, numGlyphs);
DeviceRecord drNext = null;
for (uint i=1; i<NumberDeviceRecords; i++)
{
drNext = GetDeviceRecord(i, numGlyphs);
if (drCurr.PixelSize >= drNext.PixelSize)
{
bSortOk = false;
break;
}
drCurr = drNext;
}
}
if (bSortOk)
{
v.Pass(T.hdmx_SortedOrder, P.hdmx_P_SortedOrder, m_tag);
}
else
{
v.Error(T.hdmx_SortedOrder, E.hdmx_E_SortedOrder, m_tag);
bRet = false;
}
}
else
{
v.Warning(T.hdmx_SortedOrder, W._TEST_W_OtherErrorsInTable, m_tag, "unable to validate that device records are in sorted order");
}
}
if (v.PerformTest(T.hdmx_DuplicateDeviceRecords))
{
if (bSizeOk && bLengthOk && bNumDeviceRecordsOk)
{
bool bNoDup = true;
if (NumberDeviceRecords > 1)
{
for (uint i=0; i<NumberDeviceRecords-1; i++)
{
DeviceRecord dr1 = GetDeviceRecord(i, numGlyphs);
for (uint j=i+1; j<NumberDeviceRecords; j++)
{
DeviceRecord dr2 = GetDeviceRecord(j, numGlyphs);
if (dr1.PixelSize == dr2.PixelSize)
{
bNoDup = false;
break;
}
}
}
}
if (bNoDup)
{
v.Pass(T.hdmx_DuplicateDeviceRecords, P.hdmx_P_DuplicateDeviceRecords, m_tag);
}
else
{
v.Error(T.hdmx_DuplicateDeviceRecords, E.hdmx_E_DuplicateDeviceRecords, m_tag);
bRet = false;
}
}
else
{
v.Warning(T.hdmx_DuplicateDeviceRecords, W._TEST_W_OtherErrorsInTable, m_tag, "unable to validate that there are no duplicate device records");
}
}
if (v.PerformTest(T.hdmx_Widths))
{
if (bSizeOk && bLengthOk && bNumDeviceRecordsOk)
{
bool bWidthsOk = true;
RasterInterf.DevMetricsData dmd = null;
try
{
Version ver = fontOwner.GetFile().GetRasterizer().FTVersion;
if ( ver.CompareTo(new Version(2,6,1)) < 0 )
v.Warning(T.hdmx_Widths, W.hdmx_W_Need_Newer_FreeType, m_tag,
"Using FreeType Version " + ver + " may not get correct results for HDMX");
dmd = fontOwner.GetCalculatedDevMetrics();
}
catch (Exception e)
{
v.ApplicationError(T.hdmx_Widths, E._Table_E_Exception, m_tag, e.Message);
bRet = false;
}
if (dmd != null)
{
for (uint i=0; i<NumberDeviceRecords; i++)
{
DeviceRecord dr = GetDeviceRecord(i, numGlyphs);
for (uint iGlyph=0; iGlyph<numGlyphs; iGlyph++)
{
if (dr.GetWidth(iGlyph) != dmd.hdmxData.Records[i].Widths[iGlyph])
{
String sDetails = "rec " + i + ", PixelSize " + dr.PixelSize + ", glyph# " + iGlyph
+ ", width = " + dr.GetWidth(iGlyph) + ", calc = " + dmd.hdmxData.Records[i].Widths[iGlyph];
v.Error(T.hdmx_Widths, E.hdmx_E_Widths, m_tag, sDetails);
bWidthsOk = false;
bRet = false;
}
}
}
if (bWidthsOk)
{
v.Pass(T.hdmx_Widths, P.hdmx_P_Widths, m_tag);
}
}
else
{
// if user didn't cancel, then check for error message
if (!v.CancelFlag)
{
String sDetails = null;
try
{
sDetails = fontOwner.GetDevMetricsDataError();
}
catch (Exception e)
{
v.ApplicationError(T.hdmx_Widths, E._Table_E_Exception, m_tag, e.Message);
}
Debug.Assert(sDetails != null);
v.Error(T.hdmx_Widths, E.hdmx_E_Rasterizer, m_tag, sDetails);
bRet = false;
}
}
}
else
{
v.Warning(T.hdmx_Widths, W._TEST_W_OtherErrorsInTable, m_tag, "unable to validate that the widths are correct");
}
}
return bRet;
}
/************************
* public methods
*/
public bool Validate(Validator v, OTFontVal fontOwner)
{
bool bRet = true;
if (v.PerformTest(T.DSIG_Formats))
{
bool bFormatsOk = true;
for (uint i = 0; i < usNumSigs; i++)
{
SigFormatOffset sfo;
try
{
sfo = GetSigFormatOffset(i);
if (sfo.ulFormat != 1)
{
v.Error(T.DSIG_Formats, E.DSIG_E_Formats, m_tag, "block " + i + ", format = " + sfo.ulFormat);
bFormatsOk = false;
bRet = false;
}
}
catch (IndexOutOfRangeException e)
{
v.Error(T.DSIG_Formats, E.DSIG_E_Formats, m_tag, "block " + i + ", " + e);
bFormatsOk = false;
bRet = false;
break; // No point continuing
}
}
if (bFormatsOk)
{
v.Pass(T.DSIG_Formats, P.DSIG_P_Formats, m_tag);
}
}
if (v.PerformTest(T.DSIG_Reserved))
{
bool bReservedOk = true;
for (uint i = 0; i < usNumSigs; i++)
{
SignatureBlock sb;
try
{
sb = GetSignatureBlock(i);
if (sb.usReserved1 != 0 || sb.usReserved2 != 0)
{
v.Error(T.DSIG_Reserved, E.DSIG_E_Reserved, m_tag, "block " + i);
bReservedOk = false;
bRet = false;
}
}
catch (IndexOutOfRangeException)
{
v.Error(T.DSIG_Reserved, E.DSIG_E_Reserved, m_tag, "block " + i);
bReservedOk = false;
bRet = false;
break; // No point continuing
}
}
if (bReservedOk)
{
v.Pass(T.DSIG_Reserved, P.DSIG_P_Reserved, m_tag);
}
}
if (v.PerformTest(T.DSIG_VerifySignature))
{
OTFile file = fontOwner.GetFile();
System.IO.FileStream fs = file.GetFileStream();
String sFilename = fs.Name;
try {
WinVerifyTrustWrapper wvt = new WinVerifyTrustWrapper();
if (wvt.WinVerifyTrustFile(sFilename))
{
if (wvt.usNumSigs > 0)
{
if (wvt.Warn_TTCv1 || wvt.Warn_DSIG_in_memFonts)
{
v.Warning(T.DSIG_VerifySignature, W.DSIG_W_VerifySignature_Generic, m_tag,
(wvt.Warn_TTCv1 ? "TTC with v1 header;":"")
+ (wvt.Warn_DSIG_in_memFonts ? "DSIG tables detected in member fonts;":""));
}
v.Pass(T.DSIG_VerifySignature, P.DSIG_P_VerifySignature, m_tag,
wvt.Signer);
}
else
{
v.Pass(T.DSIG_VerifySignature, P.DSIG_P_VerifySignature, m_tag);
}
}
else
{
v.Error(T.DSIG_VerifySignature, E.DSIG_E_VerifySignature, m_tag);
bRet = false;
}
}
catch (Exception e)
{
if (e is NotImplementedException)
{
v.ApplicationError(T.DSIG_VerifySignature, E.DSIG_A_UNUSUAL_TTC_TABLE_LAYOUT, m_tag, e.Message);
}
else
{
v.Error(T.DSIG_VerifySignature, E.DSIG_E_VerifySignature, m_tag, e.Message);
}
bRet = false;
}
}
return(bRet);
}
private bool CheckCodePageBit(int nBit, uint CodePage, string sName, Validator v, OTFont fontOwner)
{
bool bRet = true;
int nTotalChars = 0;
int nMissingChars = 0;
// decode the bit number
bool bBitSet;
if (nBit < 32)
{
bBitSet = ((ulCodePageRange1 & (1<<nBit)) != 0);
}
else
{
bBitSet = ((ulCodePageRange2 & (1<<(nBit-32))) != 0);
}
if (nBit == 31)
{
// symbol character set
Table_cmap cmapTable = (Table_cmap)fontOwner.GetTable("cmap");
if (cmapTable != null)
{
if (cmapTable.GetEncodingTableEntry(3,0) != null)
{
if (!bBitSet)
{
v.Error(T.T_NULL, E.OS_2_E_SymbolBitClear, m_tag);
bRet = false;
}
}
else
{
if (bBitSet)
{
int nPresentChars = 0;
for (ushort c=0xf000; c<= 0xf0ff; c++)
{
if (fontOwner.FastMapUnicodeToGlyphID((char)c) != 0)
{
nPresentChars++;
}
}
if (nPresentChars == 0)
{
v.Error(T.T_NULL, E.OS_2_E_SymbolBitSet, m_tag);
bRet = false;
}
}
}
}
else
{
v.Error(T.T_NULL, E._TEST_E_TableMissing, m_tag, "cmap");
bRet = false;
}
}
else if (CodePage == 0)
{
// reserved field, bit should not be set
if (bBitSet)
{
v.Error(T.T_NULL, E.OS_2_E_ReservedBitSet_CodePage, m_tag, "bit #" + nBit);
bRet = false;
}
}
else
{
try
{
if (MultiByte.IsCodePageInstalled(CodePage))
{
ushort [] arrMissingChars = new ushort[10];
uint nMaxCharSize = MultiByte.GetCodePageMaxCharSize(CodePage);
if (nMaxCharSize == 1)
{
for (ushort c = 0; c<256; c++)
{
// check for special case: MultiByteToWideChar maps char 0xca in CP1255 to U05BA, but CP1255 spec says its not defined
if (CodePage != 1255 || c != 0xca)
{
CheckCodePageGlyph(CodePage, (char)c, ref nTotalChars, ref nMissingChars, arrMissingChars, fontOwner);
}
}
}
else if (nMaxCharSize == 2)
{
bool [] LeadByteMap = new bool[256];
for (int i=0; i<256; i++)
{
LeadByteMap[i] = MultiByte.IsCodePageLeadByte(CodePage, (byte)i);
}
for (ushort c = 0; c<256; c++)
{
if (LeadByteMap[c] == false)
{
CheckCodePageGlyph(CodePage, (char)c, ref nTotalChars, ref nMissingChars, arrMissingChars, fontOwner);
}
}
for (uint leadbyte = 0; leadbyte<256; leadbyte++)
{
if (LeadByteMap[leadbyte] == true)
{
for (uint secondbyte = 0; secondbyte<256; secondbyte++)
{
char c = (char)((leadbyte << 8) + secondbyte);
CheckCodePageGlyph(CodePage, c, ref nTotalChars, ref nMissingChars, arrMissingChars, fontOwner);
}
}
}
}
else
{
Debug.Assert(false);
}
if (bBitSet)
{
if (nMissingChars != 0)
{
string sDetails = "bit #" + nBit + ", " + sName;
int n = 0;
if (nMissingChars <=10)
{
sDetails += " (missing chars:";
n = nMissingChars;
}
else
{
sDetails += " (" + nMissingChars + " missing, first ten missing chars are:";
n = 10;
}
for (int i=0; i<n; i++)
{
sDetails += " U" + arrMissingChars[i].ToString("X4");
}
sDetails += ")";
v.Warning(T.T_NULL, W.OS_2_W_CodePageRangeBitSet, m_tag, sDetails);
}
}
else
{
if (nMissingChars == 0)
{
v.Warning(T.T_NULL, W.OS_2_W_CodePageRangeBitClear, m_tag, "bit #" + nBit + ", " + sName);
}
}
}
else
{
v.ApplicationError(T.T_NULL, E.OS_2_A_CodePageNotInstalled, m_tag, "CodePage " + CodePage + " is not installed on the system");
}
}
catch (Exception e)
{
v.ApplicationError(T.T_NULL, E.OS_2_A_CodePageNotInstalled, m_tag, "CodePage " + CodePage + " throws an exception:" + e.Message);
}
}
return bRet;
}
/************************
* 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 methods
*/
public bool Validate(Validator v, OTFontVal fontOwner)
{
bool bRet = true;
if (v.PerformTest(T.VDMX_Version))
{
if (version == 0 || version == 1)
{
v.Pass(T.VDMX_Version, P.VDMX_P_Version, m_tag, version.ToString());
}
else
{
v.Error(T.VDMX_Version, E.VDMX_E_Version, m_tag, version.ToString());
bRet = false;
}
}
if (v.PerformTest(T.VDMX_Offsets))
{
bool bOffsetsOk = true;
ushort minPossibleOffset = (ushort)((ushort)FieldOffsets.ratRange + numRatios * 4 + numRatios * 2);
ushort maxPossibleOffset = (ushort)GetLength();
for (uint i = 0; i < numRatios; i++)
{
ushort offset = GetVdmxGroupOffset(i);
if (offset < minPossibleOffset || offset > maxPossibleOffset)
{
v.Error(T.VDMX_Offsets, E.VDMX_E_InvalidOffset, m_tag, "#" + i + " offset = " + offset);
bOffsetsOk = false;
bRet = false;
}
}
if (bOffsetsOk)
{
v.Pass(T.VDMX_Offsets, P.VDMX_P_Offsets, m_tag);
}
}
if (v.PerformTest(T.VDMX_GroupsInTable))
{
bool bGroupsOk = true;
for (uint i = 0; i < numRatios; i++)
{
Vdmx vdmx = GetVdmxGroup(i);
uint EndOffset = (uint)GetVdmxGroupOffset(i) + 4 + (uint)vdmx.recs * 6;
if (EndOffset > GetLength())
{
v.Error(T.VDMX_GroupsInTable, E.VDMX_E_GroupsInTable, m_tag, "group# " + i);
bGroupsOk = false;
bRet = false;
}
}
if (bGroupsOk)
{
v.Pass(T.VDMX_GroupsInTable, P.VDMX_P_GroupsInTable, m_tag);
}
}
if (v.PerformTest(T.VDMX_CompareToCalcData))
{
bool bDataOk = true;
bool needtol = false;
RasterInterf.DevMetricsData dmd = null;
try
{
Version ver = fontOwner.GetFile().GetRasterizer().FTVersion;
if (ver.CompareTo(new Version(2, 6, 1)) < 0)
{
v.Warning(T.VDMX_CompareToCalcData, W.VDMX_W_Need_Newer_FreeType, m_tag,
"Using FreeType Version " + ver + " may not get correct results for VDMX");
}
dmd = fontOwner.GetCalculatedDevMetrics();
}
catch (InvalidOperationException e)
{
// JJF Figure out what to do. Changed to warning
v.Warning(T.VDMX_CompareToCalcData, W._TEST_W_ErrorInAnotherTable, m_tag, e.Message);
}
catch (Exception e)
{
v.ApplicationError(T.VDMX_CompareToCalcData, E._Table_E_Exception, m_tag, e.Message);
bRet = false;
}
if (dmd != null)
{
for (uint iRatio = 0; iRatio < numRatios; iRatio++)
{
Ratios ratio = GetRatioRange(iRatio);
Vdmx group = GetVdmxGroup(iRatio);
for (uint iEntry = 0; iEntry < group.recs; iEntry++)
{
Vdmx.vTable vTableEntry = group.GetEntry(iEntry);
if (vTableEntry.yPelHeight <= 255)
{
if (vTableEntry.yPelHeight == dmd.vdmxData.groups[iRatio].entry[vTableEntry.yPelHeight - group.startsz].yPelHeight)
{
if (vTableEntry.yMin != dmd.vdmxData.groups[iRatio].entry[iEntry].yMin ||
vTableEntry.yMax != dmd.vdmxData.groups[iRatio].entry[iEntry].yMax)
{
int dif = dmd.vdmxData.groups[iRatio].entry[iEntry].yMax - dmd.vdmxData.groups[iRatio].entry[iEntry].yMin;
if (!TestTolerance(dmd.vdmxData.groups[iRatio].entry[iEntry].yMin, vTableEntry.yMin, dif) ||
!TestTolerance(dmd.vdmxData.groups[iRatio].entry[iEntry].yMax, vTableEntry.yMax, dif))
{
String sDetails = "group[" + iRatio + "], entry[" + iEntry + "], yPelHeight = " + vTableEntry.yPelHeight +
", yMin,yMax = " + vTableEntry.yMin + "," + vTableEntry.yMax +
", calculated yMin,yMax = " + dmd.vdmxData.groups[iRatio].entry[iEntry].yMin + "," +
dmd.vdmxData.groups[iRatio].entry[iEntry].yMax;
v.Error(T.VDMX_CompareToCalcData, E.VDMX_E_CalcData, m_tag, sDetails);
bDataOk = false;
}
else
{
needtol = true;
}
}
/*
* else
* {
* String s = "group[" + iRatio + "], yPelHeight = " + vTableEntry.yPelHeight + ", entry OK";
* v.DebugMsg(s, m_tag);
* }
*/
}
else
{
Debug.Assert(false);
}
}
else
{
String sDetails = "group[" + iRatio + "], entry[" + iEntry + "], yPelHeight = " + vTableEntry.yPelHeight;
v.Error(T.VDMX_CompareToCalcData, E.VDMX_E_yPelHeight_illegal, m_tag, sDetails);
bDataOk = false;
}
}
}
if (bDataOk)
{
if (needtol)
{
String sDetails = "The differences were smaller than the tolerance, so they may well be valid if the VDMX was hand-tuned";
v.Warning(T.VDMX_CompareToCalcData, W.VDMX_W_CalcData, m_tag, sDetails);
}
else
{
v.Pass(T.VDMX_CompareToCalcData, P.VDMX_P_CalcData, m_tag);
}
}
else
{
//v.Error(T.VDMX_CompareToCalcData, E.VDMX_E_CalcData, m_tag);
bRet = false;
}
}
else
{
// Rasterization could not occur for various reasons.
string s = "Unable to get calculated device metrics.";
v.Error(T.VDMX_CompareToCalcData, E.VDMX_E_CalcData, m_tag, s);
bDataOk = false;
bRet = false;
}
}
return(bRet);
}
/************************
* public methods
*/
public bool Validate(Validator v, OTFontVal fontOwner)
{
bool bRet = true;
ushort numGlyphs = GetNumGlyphs(fontOwner);
if (v.PerformTest(T.hdmx_Version))
{
if (TableVersionNumber == 0)
{
v.Pass(T.hdmx_Version, P.hdmx_P_Version, m_tag);
}
else
{
v.Error(T.hdmx_Version, E.hdmx_E_Version, m_tag, TableVersionNumber.ToString());
bRet = false;
}
}
bool bNumDeviceRecordsOk = true;
if (v.PerformTest(T.hdmx_NumDeviceRecords))
{
if (NumberDeviceRecords >= 0)
{
v.Pass(T.hdmx_NumDeviceRecords, P.hdmx_P_NumDeviceRecords, m_tag, NumberDeviceRecords.ToString());
}
else
{
v.Error(T.hdmx_NumDeviceRecords, E.hdmx_E_NumDeviceRecords_neg, m_tag, NumberDeviceRecords.ToString());
bNumDeviceRecordsOk = false;
bRet = false;
}
}
bool bSizeOk = true;
if (v.PerformTest(T.hdmx_SizeofDeviceRecord))
{
if ((SizeofDeviceRecord & 3) != 0)
{
v.Error(T.hdmx_SizeofDeviceRecord, E.hdmx_E_SizeofDeviceRecord_alignment, m_tag, SizeofDeviceRecord.ToString());
bSizeOk = false;
bRet = false;
}
uint CalculatedSizeofDeviceRecord = CalculateSizeofDeviceRecord(numGlyphs);
if (SizeofDeviceRecord != CalculatedSizeofDeviceRecord)
{
string s = "actual = " + SizeofDeviceRecord + ", calc = " + CalculatedSizeofDeviceRecord;
v.Error(T.hdmx_SizeofDeviceRecord, E.hdmx_E_SizeofDeviceRecord_numGlyphs, m_tag, s);
bSizeOk = false;
bRet = false;
}
if (bSizeOk)
{
v.Pass(T.hdmx_SizeofDeviceRecord, P.hdmx_P_SizeofDeviceRecord, m_tag, SizeofDeviceRecord.ToString());
}
}
bool bLengthOk = true;
if (v.PerformTest(T.hdmx_TableLength))
{
if (bNumDeviceRecordsOk)
{
uint CalculatedTableLength = 8 + (uint)NumberDeviceRecords * CalculateSizeofDeviceRecord(numGlyphs);
if (GetLength() == CalculatedTableLength)
{
v.Pass(T.hdmx_TableLength, P.hdmx_P_TableLength, m_tag);
}
else
{
string s = "actual: " + GetLength() + ", calc: " + CalculatedTableLength;
v.Error(T.hdmx_TableLength, E.hdmx_E_TableLength, m_tag, s);
bLengthOk = false;
bRet = false;
}
}
else
{
v.Warning(T.hdmx_TableLength, W._TEST_W_OtherErrorsInTable, m_tag, "unable to validate table length");
}
}
if (v.PerformTest(T.hdmx_DeviceRecordPadBytesZero))
{
if (bSizeOk && bLengthOk & bNumDeviceRecordsOk)
{
uint unpaddedLength = (uint)numGlyphs + 2;
if ((unpaddedLength & 3) == 0)
{
v.Pass(T.hdmx_DeviceRecordPadBytesZero, P.hdmx_P_DeviceRecordPadBytes_none, m_tag);
}
else
{
bool bPadOk = true;
if (NumberDeviceRecords > 1)
{
for (uint i = 0; i < NumberDeviceRecords; i++)
{
DeviceRecord dr = GetDeviceRecord(i, numGlyphs);
for (uint j = 0; j < dr.GetNumPadBytes(); j++)
{
if (dr.GetPadByte(j) != 0)
{
bPadOk = false;
break;
}
}
}
}
if (bPadOk)
{
v.Pass(T.hdmx_DeviceRecordPadBytesZero, P.hdmx_P_DeviceRecordPadBytes_zero, m_tag);
}
else
{
v.Error(T.hdmx_DeviceRecordPadBytesZero, E.hdmx_E_DeviceRecordPadBytes_nonzero, m_tag);
bRet = false;
}
}
}
else
{
v.Warning(T.hdmx_DeviceRecordPadBytesZero, W._TEST_W_OtherErrorsInTable, m_tag, "unable to validate that device record padding bytes are zero");
}
}
if (v.PerformTest(T.hdmx_SortedOrder))
{
if (bSizeOk && bLengthOk && bNumDeviceRecordsOk)
{
bool bSortOk = true;
if (NumberDeviceRecords > 1)
{
DeviceRecord drCurr = GetDeviceRecord(0, numGlyphs);
DeviceRecord drNext = null;
for (uint i = 1; i < NumberDeviceRecords; i++)
{
drNext = GetDeviceRecord(i, numGlyphs);
if (drCurr.PixelSize >= drNext.PixelSize)
{
bSortOk = false;
break;
}
drCurr = drNext;
}
}
if (bSortOk)
{
v.Pass(T.hdmx_SortedOrder, P.hdmx_P_SortedOrder, m_tag);
}
else
{
v.Error(T.hdmx_SortedOrder, E.hdmx_E_SortedOrder, m_tag);
bRet = false;
}
}
else
{
v.Warning(T.hdmx_SortedOrder, W._TEST_W_OtherErrorsInTable, m_tag, "unable to validate that device records are in sorted order");
}
}
if (v.PerformTest(T.hdmx_DuplicateDeviceRecords))
{
if (bSizeOk && bLengthOk && bNumDeviceRecordsOk)
{
bool bNoDup = true;
if (NumberDeviceRecords > 1)
{
for (uint i = 0; i < NumberDeviceRecords - 1; i++)
{
DeviceRecord dr1 = GetDeviceRecord(i, numGlyphs);
for (uint j = i + 1; j < NumberDeviceRecords; j++)
{
DeviceRecord dr2 = GetDeviceRecord(j, numGlyphs);
if (dr1.PixelSize == dr2.PixelSize)
{
bNoDup = false;
break;
}
}
}
}
if (bNoDup)
{
v.Pass(T.hdmx_DuplicateDeviceRecords, P.hdmx_P_DuplicateDeviceRecords, m_tag);
}
else
{
v.Error(T.hdmx_DuplicateDeviceRecords, E.hdmx_E_DuplicateDeviceRecords, m_tag);
bRet = false;
}
}
else
{
v.Warning(T.hdmx_DuplicateDeviceRecords, W._TEST_W_OtherErrorsInTable, m_tag, "unable to validate that there are no duplicate device records");
}
}
if (v.PerformTest(T.hdmx_Widths))
{
if (bSizeOk && bLengthOk && bNumDeviceRecordsOk)
{
bool bWidthsOk = true;
RasterInterf.DevMetricsData dmd = null;
try
{
dmd = fontOwner.GetCalculatedDevMetrics();
}
catch (Exception e)
{
v.ApplicationError(T.VDMX_CompareToCalcData, E._Table_E_Exception, m_tag, e.Message);
bRet = false;
}
if (dmd != null)
{
for (uint i = 0; i < NumberDeviceRecords; i++)
{
DeviceRecord dr = GetDeviceRecord(i, numGlyphs);
for (uint iGlyph = 0; iGlyph < numGlyphs; iGlyph++)
{
if (dr.GetWidth(iGlyph) != dmd.hdmxData.Records[i].Widths[iGlyph])
{
String sDetails = "rec " + i + ", PixelSize " + dr.PixelSize + ", glyph# " + iGlyph
+ ", width = " + dr.GetWidth(iGlyph) + ", calc = " + dmd.hdmxData.Records[i].Widths[iGlyph];
v.Error(T.hdmx_Widths, E.hdmx_E_Widths, m_tag, sDetails);
bWidthsOk = false;
bRet = false;
}
}
}
if (bWidthsOk)
{
v.Pass(T.hdmx_Widths, P.hdmx_P_Widths, m_tag);
}
}
else
{
// if user didn't cancel, then check for error message
if (!v.CancelFlag)
{
String sDetails = null;
try
{
sDetails = fontOwner.GetDevMetricsDataError();
}
catch (Exception e)
{
v.ApplicationError(T.VDMX_CompareToCalcData, E._Table_E_Exception, m_tag, e.Message);
}
Debug.Assert(sDetails != null);
v.Error(T.hdmx_Widths, E.hdmx_E_Rasterizer, m_tag, sDetails);
bRet = false;
}
}
}
else
{
v.Warning(T.hdmx_Widths, W._TEST_W_OtherErrorsInTable, m_tag, "unable to validate that the widths are correct");
}
}
return(bRet);
}
/*****************
* protected methods
*/
/*****************
* public methods
*/
//meant to avoid code repetition (is called from OTFontVal too)
public bool ValidateTable(OTTable table, Validator v, DirectoryEntry de, OTFontVal fontOwner)
{
String tname = GetTableManager().GetUnaliasedTableName(de.tag);
bool bRet = true;
// verify the checksum value from the directory entry matches the checksum for the table
if (!(tname == "DSIG" && IsCollection()))
{
uint calcChecksum = 0;
if (table != null)
{
calcChecksum = table.CalcChecksum();
}
if (de.checkSum != calcChecksum)
{
string s = "table '" + de.tag + "', calc: 0x" + calcChecksum.ToString("x8") + ", font: 0x" + de.checkSum.ToString("x8");
v.Error(T.T_NULL, E._DE_E_ChecksumError, de.tag, s);
bRet = false;
}
}
// verify that table has pad bytes set to zero
if (table != null)
{
uint nBytes = GetNumPadBytesAfterTable(table);
bool bPadBytesZero = true;
if (nBytes != 0)
{
long PadFilePos = table.GetBuffer().GetFilePos() + table.GetBuffer().GetLength();
byte[] padbuf = ReadBytes(PadFilePos, nBytes);
for (int iByte = 0; iByte < padbuf.Length; iByte++)
{
if (padbuf[iByte] != 0)
{
bPadBytesZero = false;
break;
}
}
}
if (bPadBytesZero == false)
{
v.Warning(T.T_NULL, W._DE_W_PadBytesNotZero, de.tag, "after " + de.tag + " table");
}
}
// ask the table object to validate its data
if (!(tname == "DSIG" && IsCollection())) v.OnTableValidationEvent(de, true);
if (table != null)
{
if (v.TestTable(de.tag)) // don't test deselected tables
{
try
{
ITableValidate valtable = (ITableValidate)table;
bRet &= valtable.Validate(v, fontOwner);
}
catch (InvalidCastException e)
{
v.ApplicationError(T.T_NULL, E._Table_E_Exception, table.m_tag, e.ToString());
bRet = false;
}
}
else
{
v.Info(I._Table_I_NotSelected, de.tag);
}
}
else
{
if (de.length == 0)
{
// check if it's a known OT table type since zero length private tables seem allowable
if (TableManager.IsKnownOTTableType(de.tag))
{
v.Error(T.T_NULL, E._Table_E_Invalid, de.tag, "The directory entry length is zero");
bRet = false;
}
}
else if (de.offset == 0)
{
v.Error(T.T_NULL, E._Table_E_Invalid, de.tag, "The directory entry offset is zero");
bRet = false;
}
else if (de.offset > GetFileLength())
{
v.Error(T.T_NULL, E._Table_E_Invalid, de.tag, "The table offset points past end of file");
bRet = false;
}
else if (de.offset + de.length > GetFileLength())
{
v.Error(T.T_NULL, E._Table_E_Invalid, de.tag, "The table extends past end of file");
bRet = false;
}
else
{
v.Error(E._Table_E_Invalid, de.tag);
bRet = false;
}
}
if (!(tname == "DSIG" && IsCollection())) v.OnTableValidationEvent(de, false);
return bRet;
}
/************************
* public methods
*/
public bool Validate(Validator v, OTFontVal fontOwner)
{
bool bRet = true;
if (v.PerformTest(T.LTSH_version))
{
if (version == 0)
{
v.Pass(T.LTSH_version, P.LTSH_P_version, m_tag);
}
else
{
v.Error(T.LTSH_version, E.LTSH_E_version, m_tag, version.ToString());
bRet = false;
}
}
Table_maxp maxpTable = (Table_maxp)fontOwner.GetTable("maxp");
if (maxpTable == null)
{
v.Error(T.T_NULL, E._TEST_E_TableMissing, m_tag, "Unable to test this table, maxp table is invalid or missing");
return(false);
}
if (v.PerformTest(T.LTSH_numGlyphs))
{
if (numGlyphs == fontOwner.GetMaxpNumGlyphs())
{
v.Pass(T.LTSH_numGlyphs, P.LTSH_P_numGlyphs, m_tag);
}
else
{
string s = "LTSH.numGlyphs = " + numGlyphs + ", maxp.numGlyphs = " + fontOwner.GetMaxpNumGlyphs();
v.Error(T.LTSH_numGlyphs, E.LTSH_E_numGlyphs, m_tag, s);
bRet = false;
}
}
if (v.PerformTest(T.LTSH_TableLength))
{
uint CalcLength = (uint)FieldOffsets.yPels + numGlyphs;
if (GetLength() == CalcLength)
{
v.Pass(T.LTSH_TableLength, P.LTSH_P_TableLength, m_tag);
}
else
{
string s = "calc length = " + CalcLength + ", actual length = " + GetLength();
v.Error(T.LTSH_TableLength, E.LTSH_E_TableLength, m_tag, s);
bRet = false;
}
}
if (v.PerformTest(T.LTSH_yPels))
{
bool bYPelsOk = true;
RasterInterf.DevMetricsData dmd = null;
try
{
Version ver = fontOwner.GetFile().GetRasterizer().FTVersion;
if (ver.CompareTo(new Version(2, 6, 1)) < 0)
{
v.Warning(T.LTSH_yPels, W.LTSH_W_Need_Newer_FreeType, m_tag,
"Using FreeType Version " + ver + " may not get correct results for LTSH");
}
dmd = fontOwner.GetCalculatedDevMetrics();
}
catch (Exception e)
{
v.ApplicationError(T.LTSH_yPels, E._Table_E_Exception, m_tag, e.Message);
bRet = false;
}
if (dmd != null)
{
for (uint iGlyphIndex = 0; iGlyphIndex < numGlyphs; iGlyphIndex++)
{
if (iGlyphIndex >= fontOwner.GetMaxpNumGlyphs())
{
// JJF. Figure out what to do
v.Warning(T.LTSH_yPels, W._TEST_W_OtherErrorsInTable, m_tag, "can't test all yPel values, LTSH.numGlyphs does not equal maxp.numGlyphs");
bRet = false;
bYPelsOk = false;
break;
}
if (GetYPel(iGlyphIndex) != dmd.ltshData.yPels[iGlyphIndex])
{
String sDetails = "glyph# = " + iGlyphIndex + ", value = " + GetYPel(iGlyphIndex) + ", calculated value = " + dmd.ltshData.yPels[iGlyphIndex];
v.Error(T.LTSH_yPels, E.LTSH_E_yPels, m_tag, sDetails);
bRet = false;
bYPelsOk = false;
}
/*
* else
* {
* String sDetails = "glyph# = " + iGlyphIndex + ", value = " + GetYPel(iGlyphIndex);
* v.DebugMsg("yPel value OK! " + sDetails, m_tag);
* }
*/
if (GetYPel(iGlyphIndex) == 0)
{
String sDetails = "glyph# = " + iGlyphIndex;
v.Warning(T.LTSH_yPels, W.LTSH_W_yPels_zero, m_tag, sDetails);
}
}
if (bYPelsOk)
{
v.Pass(T.LTSH_yPels, P.LTSH_P_yPels, m_tag);
}
}
else
{
// if user didn't cancel, then check for error message
if (!v.CancelFlag)
{
String sDetails = null;
try
{
sDetails = fontOwner.GetDevMetricsDataError();
}
catch (Exception e)
{
v.ApplicationError(T.LTSH_yPels, E._Table_E_Exception, m_tag, e.Message);
}
Debug.Assert(sDetails != null);
v.Error(T.LTSH_yPels, E.LTSH_E_Rasterizer, m_tag, sDetails);
bRet = false;
}
}
}
return(bRet);
}
/************************
* public methods
*/
public bool Validate(Validator v, OTFontVal fontOwner)
{
bool bRet = true;
if (v.PerformTest(T.LTSH_version))
{
if (version == 0)
{
v.Pass(T.LTSH_version, P.LTSH_P_version, m_tag);
}
else
{
v.Error(T.LTSH_version, E.LTSH_E_version, m_tag, version.ToString());
bRet = false;
}
}
Table_maxp maxpTable = (Table_maxp)fontOwner.GetTable("maxp");
if (maxpTable == null)
{
v.Error(T.T_NULL, E._TEST_E_TableMissing, m_tag, "Unable to test this table, maxp table is invalid or missing");
return false;
}
if (v.PerformTest(T.LTSH_numGlyphs))
{
if (numGlyphs == fontOwner.GetMaxpNumGlyphs())
{
v.Pass(T.LTSH_numGlyphs, P.LTSH_P_numGlyphs, m_tag);
}
else
{
string s = "LTSH.numGlyphs = " + numGlyphs + ", maxp.numGlyphs = " + fontOwner.GetMaxpNumGlyphs();
v.Error(T.LTSH_numGlyphs, E.LTSH_E_numGlyphs, m_tag, s);
bRet = false;
}
}
if (v.PerformTest(T.LTSH_TableLength))
{
uint CalcLength = (uint)FieldOffsets.yPels + numGlyphs;
if (GetLength() == CalcLength)
{
v.Pass(T.LTSH_TableLength, P.LTSH_P_TableLength, m_tag);
}
else
{
string s = "calc length = " + CalcLength + ", actual length = " + GetLength();
v.Error(T.LTSH_TableLength, E.LTSH_E_TableLength, m_tag, s);
bRet = false;
}
}
if (v.PerformTest(T.LTSH_yPels))
{
bool bYPelsOk = true;
RasterInterf.DevMetricsData dmd = null;
try
{
Version ver = fontOwner.GetFile().GetRasterizer().FTVersion;
if ( ver.CompareTo(new Version(2,6,1)) < 0 )
v.Warning(T.LTSH_yPels, W.LTSH_W_Need_Newer_FreeType, m_tag,
"Using FreeType Version " + ver + " may not get correct results for LTSH");
dmd = fontOwner.GetCalculatedDevMetrics();
}
catch (Exception e)
{
v.ApplicationError(T.LTSH_yPels, E._Table_E_Exception, m_tag, e.Message);
bRet = false;
}
if (dmd != null)
{
for( uint iGlyphIndex = 0; iGlyphIndex < numGlyphs; iGlyphIndex++ )
{
if (iGlyphIndex >= fontOwner.GetMaxpNumGlyphs())
{
// JJF. Figure out what to do
v.Warning(T.LTSH_yPels, W._TEST_W_OtherErrorsInTable, m_tag, "can't test all yPel values, LTSH.numGlyphs does not equal maxp.numGlyphs");
bRet = false;
bYPelsOk = false;
break;
}
if( GetYPel(iGlyphIndex) != dmd.ltshData.yPels[iGlyphIndex] )
{
String sDetails = "glyph# = " + iGlyphIndex + ", value = " + GetYPel(iGlyphIndex) + ", calculated value = " + dmd.ltshData.yPels[iGlyphIndex];
v.Error(T.LTSH_yPels, E.LTSH_E_yPels, m_tag, sDetails);
bRet = false;
bYPelsOk = false;
}
/*
else
{
String sDetails = "glyph# = " + iGlyphIndex + ", value = " + GetYPel(iGlyphIndex);
v.DebugMsg("yPel value OK! " + sDetails, m_tag);
}
*/
if (GetYPel(iGlyphIndex) == 0)
{
String sDetails = "glyph# = " + iGlyphIndex;
v.Warning(T.LTSH_yPels, W.LTSH_W_yPels_zero, m_tag, sDetails);
}
}
if (bYPelsOk)
{
v.Pass(T.LTSH_yPels, P.LTSH_P_yPels, m_tag);
}
}
else
{
// if user didn't cancel, then check for error message
if (!v.CancelFlag)
{
String sDetails = null;
try
{
sDetails = fontOwner.GetDevMetricsDataError();
}
catch (Exception e)
{
v.ApplicationError(T.LTSH_yPels, E._Table_E_Exception, m_tag, e.Message);
}
Debug.Assert(sDetails != null);
v.Error(T.LTSH_yPels, E.LTSH_E_Rasterizer, m_tag, sDetails);
bRet = false;
}
}
}
return bRet;
}