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Load page labels

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Jakub Melka
2018-12-24 17:09:23 +01:00
parent 038548c391
commit 7a7b1d7b40
7 changed files with 270 additions and 2 deletions
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31
PdfForQtLib/sources/pdfcatalog.cpp
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@ -18,6 +18,7 @@
#include "pdfcatalog.h"
#include "pdfparser.h"
#include "pdfdocument.h"
#include "pdfnumbertreeloader.h"
namespace pdf
{
@ -48,8 +49,12 @@ PDFCatalog PDFCatalog::parse(const PDFObject& catalog, const PDFDocument* docume
throw PDFParserException(PDFTranslationContext::tr("Catalog must be a dictionary."));
}
const PDFDictionary* catalogDictionary = catalog.getDictionary();
Q_ASSERT(catalogDictionary);
PDFCatalog catalogObject;
catalogObject.m_viewerPreferences = PDFViewerPreferences::parse(catalog, document);
catalogObject.m_pageLabels = PDFNumberTreeLoader<PDFPageLabel>::parse(document, catalogDictionary->get("PageLabels"));
return catalogObject;
}
@ -315,4 +320,30 @@ PDFViewerPreferences PDFViewerPreferences::parse(const PDFObject& catalogDiction
return result;
}
PDFPageLabel PDFPageLabel::parse(PDFInteger pageIndex, const PDFDocument* document, const PDFObject& object)
{
const PDFObject& dereferencedObject = document->getObject(object);
if (dereferencedObject.isDictionary())
{
std::array<std::pair<const char*, NumberingStyle>, 5> numberingStyles = { std::pair<const char*, NumberingStyle>{ "D", NumberingStyle::DecimalArabic},
std::pair<const char*, NumberingStyle>{ "R", NumberingStyle::UppercaseRoman },
std::pair<const char*, NumberingStyle>{ "r", NumberingStyle::LowercaseRoman },
std::pair<const char*, NumberingStyle>{ "A", NumberingStyle::UppercaseLetters},
std::pair<const char*, NumberingStyle>{ "a", NumberingStyle::LowercaseLetters} };
const PDFDictionary* dictionary = dereferencedObject.getDictionary();
const PDFDocumentDataLoaderDecorator loader(document);
const NumberingStyle numberingStyle = loader.readEnumByName(dictionary->get("S"), numberingStyles.cbegin(), numberingStyles.cend(), NumberingStyle::None);
const QString prefix = loader.readTextString(dictionary->get("P"), QString());
const PDFInteger startNumber = loader.readInteger(dictionary->get("St"), 1);
return PDFPageLabel(numberingStyle, prefix, pageIndex, startNumber);
}
else
{
throw PDFParserException(PDFTranslationContext::tr("Expected page label dictionary."));
}
return PDFPageLabel();
}
} // namespace pdf