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okular: implement fonts information feature for poppler generator

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Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
This commit is contained in:
Ivailo Monev 2022-04-23 12:42:46 +03:00
parent 2d53bc14a2
commit bb6c303358
2 changed files with 106 additions and 2 deletions
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106
okular/generators/poppler/generator_pdf.cpp
View file

@ -36,6 +36,71 @@ static QString okularTime(const poppler::time_type &popplertime)
return KGlobal::locale()->formatDateTime(kdatetime, KLocale::FancyLongDate);
}
static Okular::FontInfo okularFontInfo(const poppler::font_info &popplerfont)
{
Okular::FontInfo okularfont;
okularfont.setName(QString::fromStdString(popplerfont.name()));
okularfont.setFile(QString::fromStdString(popplerfont.file()));
if (popplerfont.is_embedded()) {
okularfont.setEmbedType(Okular::FontInfo::FullyEmbedded);
} else if (popplerfont.is_subset()) {
okularfont.setEmbedType(Okular::FontInfo::EmbeddedSubset);
} else {
okularfont.setEmbedType(Okular::FontInfo::NotEmbedded);
}
switch (popplerfont.type()) {
case poppler::font_info::type1: {
okularfont.setType(Okular::FontInfo::Type1);
break;
}
case poppler::font_info::type1c: {
okularfont.setType(Okular::FontInfo::Type1C);
break;
}
case poppler::font_info::type1c_ot: {
okularfont.setType(Okular::FontInfo::Type1COT);
break;
}
case poppler::font_info::type3: {
okularfont.setType(Okular::FontInfo::Type3);
break;
}
case poppler::font_info::truetype: {
okularfont.setType(Okular::FontInfo::TrueType);
break;
}
case poppler::font_info::truetype_ot: {
okularfont.setType(Okular::FontInfo::TrueTypeOT);
break;
}
case poppler::font_info::cid_type0: {
okularfont.setType(Okular::FontInfo::CIDType0);
break;
}
case poppler::font_info::cid_type0c: {
okularfont.setType(Okular::FontInfo::CIDType0C);
break;
}
case poppler::font_info::cid_type0c_ot: {
okularfont.setType(Okular::FontInfo::CIDType0COT);
break;
}
case poppler::font_info::cid_truetype: {
okularfont.setType(Okular::FontInfo::CIDTrueType);
break;
}
case poppler::font_info::cid_truetype_ot: {
okularfont.setType(Okular::FontInfo::CIDTrueTypeOT);
break;
}
default: {
okularfont.setType(Okular::FontInfo::Unknown);
break;
}
}
return okularfont;
}
static Okular::Rotation okularRotation(const poppler::page::orientation_enum popplerorientation)
{
switch (popplerorientation) {
@ -100,6 +165,7 @@ PDFGenerator::PDFGenerator(QObject *parent, const QVariantList &args)
m_documentsynopsis(nullptr)
{
setFeature(Generator::TextExtraction);
setFeature(Generator::FontInfo);
}
PDFGenerator::~PDFGenerator()
@ -199,6 +265,42 @@ const Okular::DocumentSynopsis* PDFGenerator::generateDocumentSynopsis()
return m_documentsynopsis;
}
Okular::FontInfo::List PDFGenerator::fontsForPage(int pageindex)
{
Okular::FontInfo::List result;
if (pageindex == -1) {
// all fonts
poppler::font_iterator* popplerfontiter = m_popplerdocument->create_font_iterator();
while (popplerfontiter->has_next()) {
const std::vector<poppler::font_info> popplerfontinfolist = popplerfontiter->next();
// qDebug() << Q_FUNC_INFO << pageindex << popplerfontiter->current_page() << popplerfontinfolist.size();
for (int i = 0; i < popplerfontinfolist.size(); i++) {
result.append(okularFontInfo(popplerfontinfolist.at(i)));
}
}
delete popplerfontiter;
} else {
if (pageindex < 0 || (pageindex + 1) > m_popplerpages.size()) {
kWarning() << "Page index out of range" << pageindex;
return result;
}
poppler::font_iterator* popplerfontiter = m_popplerdocument->create_font_iterator(pageindex);
while (popplerfontiter->has_next()) {
const std::vector<poppler::font_info> popplerfontinfolist = popplerfontiter->next();
// qDebug() << Q_FUNC_INFO << pageindex << popplerfontiter->current_page() << popplerfontinfolist.size();
if (popplerfontiter->current_page() != pageindex) {
continue;
}
for (int i = 0; i < popplerfontinfolist.size(); i++) {
result.append(okularFontInfo(popplerfontinfolist.at(i)));
}
}
delete popplerfontiter;
}
return result;
}
void PDFGenerator::walletDataForFile(const QString &fileName, QString *walletName, QString *walletKey) const
{
*walletKey = fileName + "/pdf";
@ -210,7 +312,7 @@ QImage PDFGenerator::image(Okular::PixmapRequest *request)
Okular::Page* okularpage = request->page();
const int pageindex = okularpage->number();
if (pageindex < 0 || (pageindex + 1) > m_popplerpages.size()) {
kWarning() << "Page index out of range";
kWarning() << "Page index out of range" << pageindex;
return QImage();
}
@ -254,7 +356,7 @@ Okular::TextPage* PDFGenerator::textPage(Okular::Page *page)
{
const int pageindex = page->number();
if (pageindex < 0 || (pageindex + 1) > m_popplerpages.size()) {
kWarning() << "Page index out of range";
kWarning() << "Page index out of range" << pageindex;
return nullptr;
}

2
okular/generators/poppler/generator_pdf.h
View file

@ -34,6 +34,8 @@ class PDFGenerator : public Okular::Generator
const Okular::DocumentInfo* generateDocumentInfo() final;
const Okular::DocumentSynopsis* generateDocumentSynopsis() final;
Okular::FontInfo::List fontsForPage(int pageindex) final;
void walletDataForFile(const QString &fileName, QString *walletName, QString *walletKey) const final;
protected: