void DescendentFontWriter::WriteCIDSet(const UIntAndGlyphEncodingInfoVector& inEncodedGlyphs)
{
mObjectsContext->StartNewIndirectObject(mCIDSetObjectID);
PDFStream* pdfStream = mObjectsContext->StartPDFStream();
IByteWriter* cidSetWritingContext = pdfStream->GetWriteStream();
Byte buffer;
UIntAndGlyphEncodingInfoVector::const_iterator it = inEncodedGlyphs.begin();
unsigned int upperLimit = inEncodedGlyphs.back().first;
for(unsigned int i=0; i < upperLimit; i+=8)
{
buffer = (it->first == i) ? 1:0;
if(it->first == i)
++it;
for(unsigned int j=1;j<8;++j)
{
buffer = buffer << 1;
if(it != inEncodedGlyphs.end() && (it->first == i + j))
{
buffer |= 1;
++it;
if(it == inEncodedGlyphs.end())
break;
}
}
cidSetWritingContext->Write(&buffer,1);
}
mObjectsContext->EndPDFStream(pdfStream);
delete pdfStream;
}
void CFFANSIFontWriter::WriteCharSet( DictionaryContext* inDescriptorContext,
ObjectsContext* inObjectsContext,
FreeTypeFaceWrapper* inFontInfo,
const UIntAndGlyphEncodingInfoVector& inEncodedGlyphs)
{
// ChartSet
inDescriptorContext->WriteKey(scCharSet);
// charset is a rather long string. i'd rather write it down as it goes, than format a string
// and submit it.
IByteWriterWithPosition* directStream = inObjectsContext->StartFreeContext();
PrimitiveObjectsWriter primitiveWriter(directStream);
directStream->Write(scLeftParanthesis,1);
UIntAndGlyphEncodingInfoVector::const_iterator it = inEncodedGlyphs.begin()+1; // skip 0 character
for(; it != inEncodedGlyphs.end(); ++it)
{
std::string glyphName = inFontInfo->GetGlyphName(it->first);
primitiveWriter.WriteName(glyphName.c_str(),eTokenSepratorNone);
}
directStream->Write(scRightParanthesis,1);
inObjectsContext->EndFreeContext();
inObjectsContext->EndLine();
}
static UIntVector GetOrderedKeys(const UIntAndGlyphEncodingInfoVector& inMap)
{
UIntVector result;
for(UIntAndGlyphEncodingInfoVector::const_iterator it = inMap.begin(); it != inMap.end(); ++it)
result.push_back(it->first);
sort(result.begin(),result.end());
return result;
}
EStatusCode CFFDescendentFontWriter::WriteFont( ObjectIDType inDecendentObjectID,
const std::string& inFontName,
FreeTypeFaceWrapper& inFontInfo,
const UIntAndGlyphEncodingInfoVector& inEncodedGlyphs,
ObjectsContext* inObjectsContext,
bool inEmbedFont)
{
// reset embedded font object ID (and flag...to whether it was actually embedded or not, which may
// happen due to font embedding restrictions)
mEmbeddedFontFileObjectID = 0;
// Logically speaking, i shouldn't be getting to CID writing
// if in type 1. at least, this is the current assumption, since
// i don't intend to support type 1 CIDs, but just regular type 1s.
// as such - fail if got here for type 1
const char* fontType = inFontInfo.GetTypeString();
if(strcmp(scType1,fontType) == 0)
{
TRACE_LOG1("CFFDescendentFontWriter::WriteFont, Exception. identified type1 font when writing CFF CID font, font name - %s. type 1 CIDs are not supported.",inFontName.substr(0, MAX_TRACE_SIZE - 200).c_str());
return PDFHummus::eFailure;
}
if (inEmbedFont)
{
CFFEmbeddedFontWriter embeddedFontWriter;
UIntAndGlyphEncodingInfoVector encodedGlyphs = inEncodedGlyphs;
UIntVector orderedGlyphs;
UShortVector cidMapping;
// Gal: the following sort completely ruins everything.
// the order of the glyphs should be maintained per the ENCODED characthers
// which is how the input is recieved. IMPORTANT - the order is critical
// for the success of the embedding, as the order determines the order of the glyphs
// in the subset font and so their GID which MUST match the encoded char.
//sort(encodedGlyphs.begin(), encodedGlyphs.end(), sEncodedGlypsSort);
for (UIntAndGlyphEncodingInfoVector::const_iterator it = encodedGlyphs.begin();
it != encodedGlyphs.end();
++it)
{
orderedGlyphs.push_back(it->first);
cidMapping.push_back(it->second.mEncodedCharacter);
}
EStatusCode status = embeddedFontWriter.WriteEmbeddedFont(inFontInfo,
orderedGlyphs,
scCIDFontType0C,
inFontName,
inObjectsContext,
&cidMapping,
mEmbeddedFontFileObjectID);
if (status != PDFHummus::eSuccess)
return status;
}
DescendentFontWriter descendentFontWriter;
return descendentFontWriter.WriteFont(inDecendentObjectID,inFontName,inFontInfo,inEncodedGlyphs,inObjectsContext,this);
}
bool FontDescriptorWriter::IsSymbolic( FreeTypeFaceWrapper* inFontInfo,
const UIntAndGlyphEncodingInfoVector& inEncodedGlyphs)
{
bool hasOnlyAdobeStandard = true;
UIntAndGlyphEncodingInfoVector::const_iterator it = inEncodedGlyphs.begin()+1; // skip 0 character
for(; it != inEncodedGlyphs.end() && hasOnlyAdobeStandard; ++it)
{
ULongVector::const_iterator itCharacters = it->second.mUnicodeCharacters.begin();
for(; itCharacters != it->second.mUnicodeCharacters.end() && hasOnlyAdobeStandard;++itCharacters)
hasOnlyAdobeStandard = inFontInfo->IsCharachterCodeAdobeStandard(*itCharacters);
}
return !hasOnlyAdobeStandard;
}
void DescendentFontWriter::WriteWidths(const UIntAndGlyphEncodingInfoVector& inEncodedGlyphs,
DictionaryContext* inFontContext)
{
UIntAndGlyphEncodingInfoVector::const_iterator it = inEncodedGlyphs.begin(); // will be the 0 glyph
FT_Pos defaultWidth;
FTPosList widthsList;
bool allWidthsSame = true;
FT_Pos currentWidth;
unsigned short firstCIDInList = 0;
unsigned short previousCIDInList = 0;
// DW
inFontContext->WriteKey(scDW);
FT_Load_Glyph(*mFontInfo,it->first,FT_LOAD_NO_SCALE);
defaultWidth = mFontInfo->GetInPDFMeasurements((*mFontInfo)->glyph->metrics.horiAdvance);
inFontContext->WriteIntegerValue(defaultWidth);
++it;
// find the first which is not default width
for(; it != inEncodedGlyphs.end();++it)
{
FT_Load_Glyph(*mFontInfo,it->first,FT_LOAD_NO_SCALE);
currentWidth = mFontInfo->GetInPDFMeasurements((*mFontInfo)->glyph->metrics.horiAdvance);
if(currentWidth != defaultWidth)
{
widthsList.push_back(currentWidth);
firstCIDInList = it->second.mEncodedCharacter;
previousCIDInList = it->second.mEncodedCharacter;
break;
}
}
if(widthsList.size() != 0)
{
++it; // promote the iterator, from the already recorded glyph
// W
inFontContext->WriteKey(scW);
mObjectsContext->StartArray();
for(; it != inEncodedGlyphs.end();++it)
{
FT_Load_Glyph(*mFontInfo,it->first,FT_LOAD_NO_SCALE);
currentWidth = mFontInfo->GetInPDFMeasurements((*mFontInfo)->glyph->metrics.horiAdvance);
if(currentWidth != defaultWidth)
{
if(it->second.mEncodedCharacter == previousCIDInList + 1)
{
++previousCIDInList;
allWidthsSame &= (widthsList.front() == currentWidth);
widthsList.push_back(currentWidth);
}
else
{
WriteWidthsItem(allWidthsSame,widthsList,firstCIDInList,previousCIDInList);
widthsList.clear();
widthsList.push_back(currentWidth);
allWidthsSame = true;
firstCIDInList = it->second.mEncodedCharacter;
previousCIDInList = it->second.mEncodedCharacter;
}
}
}
if(widthsList.size() > 0)
WriteWidthsItem(allWidthsSame,widthsList,firstCIDInList,previousCIDInList);
mObjectsContext->EndArray(eTokenSeparatorEndLine);
}
}