Handle overlapping links and widgets.

core/include/fpdfdoc/fpdf_doc.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
  
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef _FPDF_DOC_H_
 #define _FPDF_DOC_H_
 #ifndef _FPDF_PARSER_
 #include "../fpdfapi/fpdf_parser.h"
@@ skipping 510 matching lines @@
 
     void                        SetFileName(FX_WSTR wsFileName, FX_BOOL bURL = FALSE);
 protected:
 
     CPDF_Object         *m_pObj;
 };
 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);
 };
 class CPDF_Link : public CFX_Object
 {
 public:
 
     CPDF_Link(CPDF_Dictionary* pDict = NULL)
     {
         m_pDict = pDict;
@@ skipping 1203 matching lines @@
     FX_FLOAT                            GetOriginalColor(int index, FX_BSTR csEntry);
 
     void                                        GetOriginalColor(int& iColorType, FX_FLOAT fc[4], FX_BSTR csEntry);
 
     CFX_WideString                      GetCaption(FX_BSTR csEntry);
 
     CPDF_Stream*                        GetIcon(FX_BSTR csEntry);
     friend class                        CPDF_FormControl;
 };
 #endif