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Issue #33: ToUnicode for simple fonts not used

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This commit is contained in:
Jakub Melka 2022-12-25 16:19:30 +01:00
parent cb1c31ba3d
commit 8f6559bf63
1 changed files with 31 additions and 1 deletions
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32
Pdf4QtLib/sources/pdffont.cpp
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@ -1259,6 +1259,36 @@ PDFFontPointer PDFFont::createFont(const PDFObject& object, const PDFDocument* d
throw PDFException(PDFTranslationContext::tr("Invalid encoding entry of the font.")); throw PDFException(PDFTranslationContext::tr("Invalid encoding entry of the font."));
} }
} }
else if (fontDictionary->hasKey("ToUnicode"))
{
PDFFontCMap toUnicodeCMap;
const PDFObject& toUnicode = document->getObject(fontDictionary->get("ToUnicode"));
if (toUnicode.isName())
{
toUnicodeCMap = PDFFontCMap::createFromName(toUnicode.getString());
}
else if (toUnicode.isStream())
{
const PDFStream* stream = toUnicode.getStream();
QByteArray decodedStream = document->getDecodedStream(stream);
toUnicodeCMap = PDFFontCMap::createFromData(decodedStream);
}
const bool hasToUnicode = toUnicodeCMap.isValid();
if (hasToUnicode)
{
for (size_t i = 0; i < differences.size(); ++i)
{
QChar character = toUnicodeCMap.getToUnicode(static_cast<CID>(i));
if (!character.isNull())
{
differences[i] = character;
hasDifferences = true;
}
}
}
}
if (encoding == PDFEncoding::Encoding::Invalid) if (encoding == PDFEncoding::Encoding::Invalid)
{ {
@ -1296,7 +1326,7 @@ PDFFontPointer PDFFont::createFont(const PDFObject& object, const PDFDocument* d
for (size_t i = 0; i < standardEncoding.size(); ++i) for (size_t i = 0; i < standardEncoding.size(); ++i)
{ {
if ((simpleFontEncodingTable[i].isNull() || simpleFontEncodingTable[i] == QChar(QChar::SpecialCharacter::ReplacementCharacter)) && if ((simpleFontEncodingTable[i].isNull() || simpleFontEncodingTable[i] == QChar(QChar::SpecialCharacter::ReplacementCharacter)) &&
(!standardEncoding[i].isNull() && standardEncoding[i] != QChar(QChar::SpecialCharacter::ReplacementCharacter))) (!standardEncoding[i].isNull() && standardEncoding[i] != QChar(QChar::SpecialCharacter::ReplacementCharacter)))
{ {
simpleFontEncodingTable[i] = standardEncoding[i]; simpleFontEncodingTable[i] = standardEncoding[i];
} }