public uint FastMapUnicodeToGlyphID(char c)
{
// this routine caches the windows unicode cmap for better performance
// but uses 256K of heap
uint glyphID = 0xffffffff;
if (m_arrUnicodeToGlyph_3_1 == null)
{
m_arrUnicodeToGlyph_3_1 = new uint[0x00010000];
for (uint i = 0; i <= 0xffff; i++)
{
m_arrUnicodeToGlyph_3_1[i] = 0;
}
Table_cmap cmapTable = (Table_cmap)GetTable("cmap");
if (cmapTable != null)
{
Table_cmap.EncodingTableEntry eteUni = cmapTable.GetEncodingTableEntry(3, 1);
if (eteUni != null)
{
Table_cmap.Subtable st = cmapTable.GetSubtable(eteUni);
if (st != null)
{
byte [] buf = new byte[2];
for (ushort i = 0; i < 0xffff; i++)
{
buf[0] = (byte)i;
buf[1] = (byte)(i >> 8);
uint g = st.MapCharToGlyph(buf, 0);
if (g != 0)
{
// BEWARE: Some bad fonts have the glyph ID greater than # of glyphs
// and we're not throwing it out here!
m_arrUnicodeToGlyph_3_1[i] = g;
}
}
}
}
}
}
Debug.Assert(m_arrUnicodeToGlyph_3_1 != null);
if (m_arrUnicodeToGlyph_3_1 != null)
{
glyphID = m_arrUnicodeToGlyph_3_1[c];
}
return(glyphID);
}
// TODO: rewrite
public void ReadFontMetrics(out int descendMin,
out int ascendMax,
out int lsbMin,
out int rsbMax,
DIAction dia)
{
descendMin = -700;
ascendMax = 2100;
lsbMin = -1000;
rsbMax = 3500;
try
{
BoxD bboxRes = new BoxD();
Table_cmap tableCmap = (Table_cmap)this.m_font.GetTable("cmap");
if (tableCmap == null)
{
return;
}
Table_cmap.EncodingTableEntry eteUni =
tableCmap.GetEncodingTableEntry(3, 1);
if (eteUni == null)
{
return;
}
Table_cmap.Subtable subtableCmap = tableCmap.GetSubtable(eteUni);
char[] samples = { 'A', 'W', 'p' };
for (int iSample = 0; iSample < samples.Length; iSample++)
{
byte[] charbuf = new byte[2];
charbuf[0] = (byte)'A';
charbuf[1] = 0;
int indGlyph = (int)subtableCmap.MapCharToGlyph(charbuf, 0);
Table_glyf.header header = this.m_tableGlyf.GetGlyphHeader((uint)indGlyph, this.m_font);
if (header == null)
{
return;
}
BoxD bboxCur = new BoxD(header.xMin, header.yMin,
header.xMax, header.yMax);
bboxRes.Unite(bboxCur);
}
descendMin = (int)bboxRes.VecMin.Y;
ascendMax = (int)bboxRes.VecMax.Y;
lsbMin = (int)bboxRes.VecMin.X;
rsbMax = (int)bboxRes.VecMax.X;
}
catch
{
}
}
public bool ContainsMsSymbolEncodedCmap()
{
if (!bCheckedForSymbolCmap)
{
Table_cmap cmapTable = (Table_cmap)GetTable("cmap");
if (cmapTable != null)
{
Table_cmap.EncodingTableEntry eteUni = cmapTable.GetEncodingTableEntry(3, 0);
if (eteUni != null)
{
m_bContainsMsSymbolEncodedCmap = true;
}
}
bCheckedForSymbolCmap = true;
}
return(m_bContainsMsSymbolEncodedCmap);
}
/************************
* 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);
}
