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Optional content GUI

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This commit is contained in:
Jakub Melka
2019-07-01 19:53:38 +02:00
parent 445da73b1c
commit d4ef618c5d
7 changed files with 626 additions and 2 deletions
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96
PdfForQtLib/sources/pdfoptionalcontent.cpp
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@ -34,6 +34,15 @@ PDFOptionalContentProperties PDFOptionalContentProperties::create(const PDFDocum
PDFDocumentDataLoaderDecorator loader(document);
properties.m_allOptionalContentGroups = loader.readReferenceArrayFromDictionary(dictionary, "OCGs");
for (const PDFObjectReference& reference : properties.m_allOptionalContentGroups)
{
const PDFObject& object = document->getStorage().getObject(reference);
if (!object.isNull())
{
properties.m_optionalContentGroups[reference] = PDFOptionalContentGroup::create(document, object);
}
}
if (dictionary->hasKey("D"))
{
properties.m_defaultConfiguration = PDFOptionalContentConfiguration::create(document, dictionary->get("D"));
@ -178,4 +187,91 @@ PDFOptionalContentConfiguration::UsageApplication PDFOptionalContentConfiguratio
return result;
}
PDFOptionalContentGroup::PDFOptionalContentGroup() :
m_usageZoomMin(0),
m_usageZoomMax(std::numeric_limits<PDFReal>::infinity()),
m_usagePrintState(OCState::Unknown),
m_usageViewState(OCState::Unknown),
m_usageExportState(OCState::Unknown)
{
}
PDFOptionalContentGroup PDFOptionalContentGroup::create(const PDFDocument* document, const PDFObject& object)
{
PDFOptionalContentGroup result;
const PDFObject& dereferencedObject = document->getObject(object);
if (!dereferencedObject.isDictionary())
{
throw PDFParserException(PDFTranslationContext::tr("Invalid optional content group."));
}
PDFDocumentDataLoaderDecorator loader(document);
const PDFDictionary* dictionary = dereferencedObject.getDictionary();
result.m_name = loader.readTextStringFromDictionary(dictionary, "Name", QString());
if (dictionary->hasKey("Intent"))
{
const PDFObject& nameOrNames = document->getObject(dictionary->get("Intent"));
if (nameOrNames.isName())
{
result.m_intents = { loader.readName(nameOrNames) };
}
else if (nameOrNames.isArray())
{
result.m_intents = loader.readNameArray(nameOrNames);
}
else if (!nameOrNames.isNull())
{
throw PDFParserException(PDFTranslationContext::tr("Invalid optional content group."));
}
}
const PDFObject& usageDictionaryObject = dictionary->get("Usage");
if (usageDictionaryObject.isDictionary())
{
const PDFDictionary* usageDictionary = usageDictionaryObject.getDictionary();
result.m_creatorInfo = document->getObject(usageDictionary->get("CreatorInfo"));
result.m_language = document->getObject(usageDictionary->get("Language"));
const PDFObject& zoomDictionary = document->getObject(usageDictionary->get("Zoom"));
if (zoomDictionary.isDictionary())
{
result.m_usageZoomMin = loader.readNumberFromDictionary(usageDictionary, "min", result.m_usageZoomMin);
result.m_usageZoomMax = loader.readNumberFromDictionary(usageDictionary, "max", result.m_usageZoomMax);
}
auto readState = [document, usageDictionary, &loader](const char* dictionaryKey, const char* key) -> OCState
{
const PDFObject& stateDictionaryObject = document->getObject(usageDictionary->get(dictionaryKey));
if (stateDictionaryObject.isDictionary())
{
const PDFDictionary* stateDictionary = stateDictionaryObject.getDictionary();
QByteArray stateName = loader.readNameFromDictionary(stateDictionary, key);
if (stateName == "ON")
{
return OCState::ON;
}
if (stateName == "OFF")
{
return OCState::OFF;
}
}
return OCState::Unknown;
};
result.m_usageViewState = readState("View", "ViewState");
result.m_usagePrintState = readState("Print", "PrintState");
result.m_usageExportState = readState("Export", "ExportState");
}
return result;
}
} // namespace pdf