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Separate tool for extracting pages

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This commit is contained in:
Jakub Melka
2020-10-31 14:23:13 +01:00
parent 4051591929
commit c58158e3ee
12 changed files with 591 additions and 21 deletions
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28
PdfForQtLib/sources/pdfpage.cpp
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@ -25,14 +25,14 @@ namespace pdf
PDFPageInheritableAttributes PDFPageInheritableAttributes::parse(const PDFPageInheritableAttributes& templateAttributes,
const PDFObject& dictionary,
const PDFDocument* document)
const PDFObjectStorage* storage)
{
PDFPageInheritableAttributes result(templateAttributes);
const PDFObject& dereferencedDictionary = document->getObject(dictionary);
const PDFObject& dereferencedDictionary = storage->getObject(dictionary);
if (dereferencedDictionary.isDictionary())
{
PDFDocumentDataLoaderDecorator loader(document);
PDFDocumentDataLoaderDecorator loader(storage);
const PDFDictionary* dictionary = dereferencedDictionary.getDictionary();
if (dictionary->hasKey("MediaBox"))
@ -106,11 +106,11 @@ PageRotation PDFPageInheritableAttributes::getPageRotation() const
return PageRotation::None;
}
std::vector<PDFPage> PDFPage::parse(const PDFDocument* document, const PDFObject& root)
std::vector<PDFPage> PDFPage::parse(const PDFObjectStorage* storage, const PDFObject& root)
{
std::vector<PDFPage> result;
std::set<PDFObjectReference> visited;
parseImpl(result, visited, PDFPageInheritableAttributes(), root, document);
parseImpl(result, visited, PDFPageInheritableAttributes(), root, storage);
return result;
}
@ -228,24 +228,24 @@ void PDFPage::parseImpl(std::vector<PDFPage>& pages,
std::set<PDFObjectReference>& visitedReferences,
const PDFPageInheritableAttributes& templateAttributes,
const PDFObject& root,
const PDFDocument* document)
const PDFObjectStorage* storage)
{
// Are we in internal node, or leaf (page object)?
PDFObjectReference objectReference = root.isReference() ? root.getReference() : PDFObjectReference();
const PDFObject& dereferenced = document->getObject(root);
const PDFObject& dereferenced = storage->getObject(root);
if (dereferenced.isDictionary())
{
const PDFDictionary* dictionary = dereferenced.getDictionary();
const PDFObject& typeObject = document->getObject(dictionary->get("Type"));
const PDFObject& typeObject = storage->getObject(dictionary->get("Type"));
if (typeObject.isName())
{
PDFPageInheritableAttributes currentInheritableAttributes = PDFPageInheritableAttributes::parse(templateAttributes, root, document);
PDFPageInheritableAttributes currentInheritableAttributes = PDFPageInheritableAttributes::parse(templateAttributes, root, storage);
QByteArray typeString = typeObject.getString();
if (typeString == "Pages")
{
const PDFObject& kids = document->getObject(dictionary->get("Kids"));
const PDFObject& kids = storage->getObject(dictionary->get("Kids"));
if (kids.isArray())
{
const PDFArray* kidsArray = kids.getArray();
@ -268,7 +268,7 @@ void PDFPage::parseImpl(std::vector<PDFPage>& pages,
}
visitedReferences.insert(kid.getReference());
parseImpl(pages, visitedReferences, currentInheritableAttributes, kid, document);
parseImpl(pages, visitedReferences, currentInheritableAttributes, kid, storage);
}
}
else
@ -284,7 +284,7 @@ void PDFPage::parseImpl(std::vector<PDFPage>& pages,
page.m_pageReference = objectReference;
page.m_mediaBox = currentInheritableAttributes.getMediaBox();
page.m_cropBox = currentInheritableAttributes.getCropBox();
page.m_resources = document->getObject(currentInheritableAttributes.getResources());
page.m_resources = storage->getObject(currentInheritableAttributes.getResources());
page.m_pageRotation = currentInheritableAttributes.getPageRotation();
if (!page.m_cropBox.isValid())
@ -292,11 +292,11 @@ void PDFPage::parseImpl(std::vector<PDFPage>& pages,
page.m_cropBox = page.m_mediaBox;
}
PDFDocumentDataLoaderDecorator loader(document);
PDFDocumentDataLoaderDecorator loader(storage);
page.m_bleedBox = loader.readRectangle(dictionary->get("BleedBox"), page.getCropBox());
page.m_trimBox = loader.readRectangle(dictionary->get("TrimBox"), page.getCropBox());
page.m_artBox = loader.readRectangle(dictionary->get("ArtBox"), page.getCropBox());
page.m_contents = document->getObject(dictionary->get("Contents"));
page.m_contents = storage->getObject(dictionary->get("Contents"));
page.m_annots = loader.readReferenceArrayFromDictionary(dictionary, "Annots");
page.m_lastModified = PDFEncoding::convertToDateTime(loader.readStringFromDictionary(dictionary, "LastModified"));
page.m_thumbnailReference = loader.readReferenceFromDictionary(dictionary, "Thumb");