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Annotation painting, first part

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Jakub Melka
2020-03-29 18:53:04 +02:00
parent 8bce1bc1e5
commit 232832e753
20 changed files with 1175 additions and 339 deletions
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22
PdfForQtLib/sources/pdfnametreeloader.h
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@@ -34,27 +34,27 @@ public:
explicit PDFNameTreeLoader() = delete;
using MappedObjects = std::map<QByteArray, Type>;
using LoadMethod = std::function<Type(const PDFDocument*, const PDFObject&)>;
using LoadMethod = std::function<Type(const PDFObjectStorage*, const PDFObject&)>;
/// Parses the name tree and loads its items into the map. Some errors are ignored,
/// e.g. when kid is null. Objects are retrieved by \p loadMethod.
/// \param document Document
/// \param storage Object storage
/// \param root Root of the name tree
/// \param loadMethod Parsing method, which retrieves parsed object
static MappedObjects parse(const PDFDocument* document, const PDFObject& root, const LoadMethod& loadMethod)
static MappedObjects parse(const PDFObjectStorage* storage, const PDFObject& root, const LoadMethod& loadMethod)
{
MappedObjects result;
parseImpl(result, document, root, loadMethod);
parseImpl(result, storage, root, loadMethod);
return result;
}
private:
static void parseImpl(MappedObjects& objects, const PDFDocument* document, const PDFObject& root, const LoadMethod& loadMethod)
static void parseImpl(MappedObjects& objects, const PDFObjectStorage* storage, const PDFObject& root, const LoadMethod& loadMethod)
{
if (const PDFDictionary* dictionary = document->getDictionaryFromObject(root))
if (const PDFDictionary* dictionary = storage->getDictionaryFromObject(root))
{
// Jakub Melka: First, load the objects into the map
const PDFObject& namedItems = document->getObject(dictionary->get("Names"));
const PDFObject& namedItems = storage->getObject(dictionary->get("Names"));
if (namedItems.isArray())
{
const PDFArray* namedItemsArray = namedItems.getArray();
@@ -64,25 +64,25 @@ private:
const size_t numberIndex = 2 * i;
const size_t valueIndex = 2 * i + 1;
const PDFObject& name = document->getObject(namedItemsArray->getItem(numberIndex));
const PDFObject& name = storage->getObject(namedItemsArray->getItem(numberIndex));
if (!name.isString())
{
continue;
}
objects[name.getString()] = loadMethod(document, namedItemsArray->getItem(valueIndex));
objects[name.getString()] = loadMethod(storage, namedItemsArray->getItem(valueIndex));
}
}
// Then, follow the kids
const PDFObject& kids = document->getObject(dictionary->get("Kids"));
const PDFObject& kids = storage->getObject(dictionary->get("Kids"));
if (kids.isArray())
{
const PDFArray* kidsArray = kids.getArray();
const size_t count = kidsArray->getCount();
for (size_t i = 0; i < count; ++i)
{
parseImpl(objects, document, kidsArray->getItem(i), loadMethod);
parseImpl(objects, storage, kidsArray->getItem(i), loadMethod);
}
}
}