public bool Validate_Format7(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 big metrics
bigGlyphMetrics bgm = GetBigMetrics(ist, idGlyph, ista.firstGlyphIndex);
if (bgm != null)
{
bigGlyphMetrics_val bgm_val = bigGlyphMetrics_val.CreateFromBigGlyphMetrics(bgm);
if (!bgm_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 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 bool Validate_Format5(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++)
{
// no metrics in format 5
// validate image data
// - this is just bitmap data, any values should be valid
}
return(bOk);
}
public byte [,] GetBitmapImage(Table_EBLC.bitmapSizeTable bst, ushort glyphID)
{
byte [,] bits = null;
Table_EBLC.indexSubTableArray ista = bst.FindIndexSubTableArray(glyphID);
if (ista != null)
{
Table_EBLC.indexSubTable ist = bst.GetIndexSubTable(ista);
if (ist.header.imageFormat < 8)
{
// simple bitmap
byte [] encodedDataBuf = GetImageData(ist, glyphID, ista.firstGlyphIndex);
byte width = 0, height = 0;
switch (ist.header.imageFormat)
{
case 0:
throw new ApplicationException("illegal image format: 0");
//break;
case 1:
case 2:
smallGlyphMetrics sgm = this.GetSmallMetrics(ist, glyphID, ista.firstGlyphIndex);
width = sgm.width;
height = sgm.height;
break;
case 3:
case 4:
throw new ApplicationException("illegal image format: " + ist.header.imageFormat);
//break;
case 5:
switch (ist.header.indexFormat)
{
case 2:
Table_EBLC.indexSubTable2 ist2 = (Table_EBLC.indexSubTable2)ist;
width = ist2.bigMetrics.width;
height = ist2.bigMetrics.height;
break;
case 5:
Table_EBLC.indexSubTable5 ist5 = (Table_EBLC.indexSubTable5)ist;
width = ist5.bigMetrics.width;
height = ist5.bigMetrics.height;
break;
}
break;
case 6:
case 7:
bigGlyphMetrics bgm = this.GetBigMetrics(ist, glyphID, ista.firstGlyphIndex);
width = bgm.width;
height = bgm.height;
break;
}
if (encodedDataBuf != null)
{
bits = DecodeImageData(ist, width, height, bst.bitDepth, encodedDataBuf);
}
else
{
//Debug.Assert(false);
}
}
else if (ist.header.imageFormat < 10)
{
// composite bitmap
throw new ApplicationException("TODO: impelement bitmap composites");
}
else
{
Debug.Assert(false, "illegal image format");
}
}
return(bits);
}
/************************
* public methods
*/
public bool Validate(Validator v, OTFontVal fontOwner)
{
bool bRet = true;
if (fontOwner.GetFile().IsCollection())
{
if (fontOwner.GetFontIndexInFile() > 0)
{
// checksum not matching data is covered by check elsewhere. Assume they match.
DirectoryEntry de_EBDT = fontOwner.GetDirectoryEntry("EBDT");
for (uint i = 0; i < fontOwner.GetFontIndexInFile(); i++)
{
if (fontOwner.GetFile().GetFont(i).GetDirectoryEntry("EBDT").checkSum
== de_EBDT.checkSum)
{
v.Info(T.T_NULL, I.glyf_I_IDENTICAL_GLYF_TABLES_IN_TTC, m_tag);
return(true);
}
}
}
}
m_nCachedMaxpNumGlyphs = fontOwner.GetMaxpNumGlyphs();
if (v.PerformTest(T.EBDT_version))
{
if (version.GetUint() == 0x00020000 || version.GetUint() == 0x00030000)
{
v.Pass(T.EBDT_version, P.EBDT_P_version, m_tag);
}
else
{
v.Error(T.EBDT_version, E.EBDT_E_version, m_tag, "version = 0x" + version.GetUint().ToString("x8") + ", unable to continue validation");
return(false);
}
}
//TODO: check tag for EBDT v3, CBDT v2, bdat
if (v.PerformTest(T.EBDT_TableDependency))
{
Table_EBLC EBLCTable = (Table_EBLC)fontOwner.GetTable("EBLC");
if (EBLCTable != null)
{
v.Pass(T.EBDT_TableDependency, P.EBDT_P_TableDependency, m_tag);
}
else
{
v.Error(T.EBDT_TableDependency, E.EBDT_E_TableDependency, m_tag);
bRet = false;
}
}
// T.EBDT_GlyphImageData depends on T.EBDT_TableDependency passing.
if (v.PerformTest(T.EBDT_GlyphImageData))
{
bool bGlyphImageDataOk = true;
Table_EBLC EBLCTable = (Table_EBLC)fontOwner.GetTable("EBLC");
if (EBLCTable == null)
{
return(bRet); //failed the last test, not going on.
}
// for each bitmap size
for (uint i = 0; i < EBLCTable.numSizes; i++)
{
Table_EBLC.bitmapSizeTable bst = EBLCTable.GetBitmapSizeTable(i);
string sSize = "bitmapsize[" + i + "], ppemX=" + bst.ppemX + ", ppemY=" + bst.ppemY;
if (true)
{
for (uint j = 0; j < bst.numberOfIndexSubTables; j++)
{
Table_EBLC.indexSubTable ist = null;
Table_EBLC.indexSubTableArray ista_j = EBLCTable.GetIndexSubTableArray(bst, j);
if (ista_j != null)
{
ist = bst.GetIndexSubTable(ista_j);
}
if (ist != null)
{
string sID = sSize + ", indexSubTable[" + j + "](index fmt " + ist.header.indexFormat +
", image fmt " + ist.header.imageFormat + ")";
switch (ist.header.imageFormat)
{
case 1:
if (!Validate_Format1(v, sID, ist))
{
bGlyphImageDataOk = false;
bRet = false;
}
break;
case 2:
if (!Validate_Format2(v, sID, ist))
{
bGlyphImageDataOk = false;
bRet = false;
}
break;
case 3:
if (!Validate_Format3(v, sID, ist))
{
bGlyphImageDataOk = false;
bRet = false;
}
break;
case 4:
if (!Validate_Format4(v, sID, ist))
{
bGlyphImageDataOk = false;
bRet = false;
}
break;
case 5:
if (!Validate_Format5(v, sID, ist))
{
bGlyphImageDataOk = false;
bRet = false;
}
break;
case 6:
if (!Validate_Format6(v, sID, ist))
{
bGlyphImageDataOk = false;
bRet = false;
}
break;
case 7:
if (!Validate_Format7(v, sID, ist))
{
bGlyphImageDataOk = false;
bRet = false;
}
break;
case 8:
if (!Validate_Format8(v, sID, ist))
{
bGlyphImageDataOk = false;
bRet = false;
}
break;
case 9:
if (!Validate_Format9(v, sID, ist))
{
bGlyphImageDataOk = false;
bRet = false;
}
break;
case 17:
if (version.GetUint() != 0x00030000)
{
bGlyphImageDataOk = false;
bRet = false;
}
// TODO: adding 3 checks
break;
case 18:
if (version.GetUint() != 0x00030000)
{
bGlyphImageDataOk = false;
bRet = false;
}
// TODO: adding 3 checks
break;
case 19:
if (version.GetUint() != 0x00030000)
{
bGlyphImageDataOk = false;
bRet = false;
}
// TODO: adding 3 checks
break;
default:
// TODO: emit Unknown
break;
}
}
}
}
}
if (bGlyphImageDataOk)
{
v.Pass(T.EBDT_GlyphImageData, P.EBDT_P_GlyphImageData, m_tag);
}
}
return(bRet);
}
public bool Validate_Format9(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 big metrics
bigGlyphMetrics bgm = GetBigMetrics(ist, idGlyph, ista.firstGlyphIndex);
if (bgm != null)
{
bigGlyphMetrics_val bgm_val = bigGlyphMetrics_val.CreateFromBigGlyphMetrics(bgm);
if (!bgm_val.Validate(v, sIdentity + ", idGlyph=" + idGlyph, this))
{
bOk = false;
}
ushort numComponents = this.GetNumComponents(ist, idGlyph, ista.firstGlyphIndex);
// validate component array
for (uint i = 0; i < numComponents; i++)
{
ebdtComponent component = GetComponent(ist, idGlyph, ista.firstGlyphIndex, i);
Debug.Assert(component != null);
// validate the ebdtComponent
// verify that the component's glyph code is less than maxp numGlyphs
if (component.glyphCode >= m_nCachedMaxpNumGlyphs)
{
string sDetails = sIdentity + ", idGlyph=" + idGlyph +
", component[" + i + "].glyphCode=" + component.glyphCode +
", maxp.numGlyphs = " + m_nCachedMaxpNumGlyphs;
v.Error(T.EBDT_GlyphImageData, E.EBDT_E_GlyphImageData, m_tag, sDetails);
bOk = false;
}
// verify that the component's glyph code isn't 0, which should be reserved as the empty glyph
// (technically, someone could use the empty glyph as a component, but it's more likely to be an error)
if (component.glyphCode == 0)
{
string sDetails = sIdentity + ", idGlyph=" + idGlyph +
", component[" + i + "].glyphCode=" + component.glyphCode;
v.Error(T.EBDT_GlyphImageData, E.EBDT_E_GlyphImageData, m_tag, sDetails);
bOk = false;
}
// verify that the component's glyph code isn't the glyph code of its parent
if (component.glyphCode == idGlyph)
{
string sDetails = sIdentity + ", idGlyph=" + idGlyph +
", component[" + i + "].glyphCode=" + component.glyphCode + " (glyph can't use itself as a component)";
v.Error(T.EBDT_GlyphImageData, E.EBDT_E_GlyphImageData, m_tag, sDetails);
bOk = false;
}
}
}
}
return(bOk);
}
