Handle overlapping links and widgets.

core/include/fpdfdoc/fpdf_doc.h

Index: core/include/fpdfdoc/fpdf_doc.h
diff --git a/core/include/fpdfdoc/fpdf_doc.h b/core/include/fpdfdoc/fpdf_doc.h
index 60f41a55542537480757661c4a3cd4b6c7aaa1fc..baba7690a1318d19c4fa118d55f4edf25118e5b0 100644
--- a/core/include/fpdfdoc/fpdf_doc.h
+++ b/core/include/fpdfdoc/fpdf_doc.h
@@ -528,30 +528,20 @@ class CPDF_LinkList : public CFX_Object
 {
 public:
 
-    CPDF_LinkList(CPDF_Document* pDoc)
-    {
-        m_pDocument = pDoc;
-    }
+    CPDF_LinkList();
 
     ~CPDF_LinkList();
 
     CPDF_Link			GetLinkAtPoint(CPDF_Page* pPage, FX_FLOAT pdf_x, FX_FLOAT pdf_y);
 
-    int					CountLinks(CPDF_Page* pPage);
-
-    CPDF_Link			GetLink(CPDF_Page* pPage, int index);
-
-    CPDF_Document*		GetDocument() const
-    {
-        return m_pDocument;
-    }
 protected:
 
-    CPDF_Document*		m_pDocument;
-
     CFX_MapPtrToPtr		m_PageMap;
 
     CFX_PtrArray*		GetPageLinks(CPDF_Page* pPage);
+    static FX_BOOL IsLink(CPDF_Dictionary* pAnnot);
+    static FX_BOOL IsWidget(CPDF_Dictionary* pAnnot);
+    static CFX_FloatRect GetWidgetRect(CPDF_Dictionary* pWidget);
 
     void				LoadPageLinks(CPDF_Page* pPage, CFX_PtrArray* pList);
 };