tdf#106972 vcl PDF export, PDF images: handle indirect font references

There were a number of problems here:

- the /Resources key of a page object may be an indirect object
- the /Font key of a resource object may be an indirect object
- the /Length key of an object may be an indirect object

So in all these cases handle not only a direct dictionary / number but
also when we have a reference-to-dictionary/number.

Change-Id: Ie74371f0ba43a133a1299843ef20cbfc75fe26d7

1 files changed, 5 insertions, 1 deletions

diff --git a/include/vcl/filter/pdfdocument.hxx b/include/vcl/filter/pdfdocument.hxx
index 4bed3c32737a..595b4f0fdfd3 100644
--- a/include/vcl/filter/pdfdocument.hxx
+++ b/include/vcl/filter/pdfdocument.hxx
@@ -50,6 +50,8 @@ class VCL_DLLPUBLIC PDFObjectElement : public PDFElement
     double m_fObjectValue;
     double m_fGenerationValue;
     std::map<OString, PDFElement*> m_aDictionary;
+    /// If set, the object contains this number element (outside any dictionary/array).
+    PDFNumberElement* m_pNumberElement;
     /// Position after the '<<' token.
     sal_uInt64 m_nDictionaryOffset;
     /// Length of the dictionary buffer till (before) the '>>' token.
@@ -82,8 +84,10 @@ public:
     sal_uInt64 GetDictionaryLength();
     PDFDictionaryElement* GetDictionary();
     void SetDictionary(PDFDictionaryElement* pDictionaryElement);
+    void SetNumberElement(PDFNumberElement* pNumberElement);
+    PDFNumberElement* GetNumberElement() const;
     /// Get access to the parsed key-value items from the object dictionary.
-    const std::map<OString, PDFElement*>& GetDictionaryItems() const;
+    const std::map<OString, PDFElement*>& GetDictionaryItems();
     /// Same as GetDictionaryItems(), but entries are sorted by file offset.
     std::vector< std::pair<OString, PDFElement*> > GetDictionaryItemsByOffset();
     void SetArray(PDFArrayElement* pArrayElement);