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Issue #244: PageMaster: united one document after remove pages leads to lose the outline

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This commit is contained in:
Jakub Melka
2025-03-02 19:41:41 +01:00
parent 63d81e751d
commit abeb1dd458
3 changed files with 56 additions and 2 deletions
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54
Pdf4QtLibCore/sources/pdfdocumentmanipulator.cpp
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@ -37,6 +37,7 @@ PDFOperationResult PDFDocumentManipulator::assemble(const AssembledPages& pages)
try
{
classify(pages);
const PDFDocument* singleDocument = nullptr;
pdf::PDFDocumentBuilder documentBuilder;
if (m_flags.testFlag(SingleDocument))
@ -56,7 +57,8 @@ PDFOperationResult PDFDocumentManipulator::assemble(const AssembledPages& pages)
throw PDFException(tr("Invalid document."));
}
documentBuilder.setDocument(m_documents.at(documentIndex));
singleDocument = m_documents.at(documentIndex);
documentBuilder.setDocument(singleDocument);
}
else
{
@ -72,9 +74,13 @@ PDFOperationResult PDFDocumentManipulator::assemble(const AssembledPages& pages)
// Correct page tree (invalid parents are present)
documentBuilder.flattenPageTree();
if (!m_flags.testFlag(SingleDocument) || m_flags.testFlag(RemovedPages))
if (!m_flags.testFlag(SingleDocument))
{
documentBuilder.removeOutline();
}
if (!m_flags.testFlag(SingleDocument) || m_flags.testFlag(RemovedPages))
{
documentBuilder.removeThreads();
documentBuilder.removeDocumentActions();
documentBuilder.removeStructureTree();
@ -86,6 +92,10 @@ PDFOperationResult PDFDocumentManipulator::assemble(const AssembledPages& pages)
{
addOutlineAndDocumentParts(documentBuilder, pages, adjustedPages);
}
else if (m_flags.testFlag(RemovedPages) && singleDocument)
{
filterOutline(documentBuilder, singleDocument, adjustedPages);
}
pdf::PDFDocument mergedDocument = documentBuilder.build();
@ -487,6 +497,46 @@ void PDFDocumentManipulator::finalizeDocument(PDFDocument* document)
m_assembledDocument = finalBuilder.build();
}
void PDFDocumentManipulator::filterOutline(PDFDocumentBuilder& documentBuilder,
const PDFDocument* singleDocument,
const std::vector<PDFObjectReference>& adjustedPages)
{
QSharedPointer<PDFOutlineItem> outline = singleDocument->getCatalog()->getOutlineRootPtr();
if (outline)
{
outline = outline->clone();
std::set<PDFObjectReference> adjustedPagesSet(adjustedPages.cbegin(), adjustedPages.cend());
std::function<void(QSharedPointer<PDFOutlineItem>&)> filter = [&adjustedPagesSet](QSharedPointer<PDFOutlineItem>& item)
{
for (size_t i = 0; i < item->getChildCount();)
{
bool shouldRemove = false;
const PDFOutlineItem* childItem = item->getChild(i);
const PDFAction* action = childItem->getAction();
const PDFActionGoTo* actionGoTo = dynamic_cast<const PDFActionGoTo*>(action);
if (actionGoTo)
{
const PDFObjectReference pageReference = actionGoTo->getDestination().getPageReference();
shouldRemove = !adjustedPagesSet.count(pageReference);
}
if (shouldRemove)
{
item->removeChild(i);
}
else
{
++i;
}
}
};
filter(outline);
documentBuilder.setOutline(outline.data());
}
}
void PDFDocumentManipulator::addOutlineAndDocumentParts(PDFDocumentBuilder& documentBuilder,
const AssembledPages& pages,
const std::vector<PDFObjectReference>& adjustedPages)