Mege to XFA: Redo CPDF_PageObjects - part 1

core/include/fpdfapi/fpdf_page.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 CORE_INCLUDE_FPDFAPI_FPDF_PAGE_H_
 #define CORE_INCLUDE_FPDFAPI_FPDF_PAGE_H_
 
+#include <memory>
+
+#include "core/include/fpdfapi/fpdf_parser.h"
+#include "core/include/fpdfapi/fpdf_resource.h"
 #include "core/include/fxge/fx_dib.h"
-#include "fpdf_parser.h"
-#include "fpdf_resource.h"
 
-class CPDF_PageObjects;
 class CPDF_Page;
 class CPDF_Form;
 class CPDF_ParseOptions;
 class CPDF_PageObject;
 class CPDF_PageRenderCache;
 class CPDF_StreamFilter;
 class CPDF_AllStates;
 class CPDF_ContentParser;
 class CPDF_StreamContentParser;
 #define PDFTRANS_GROUP 0x0100
 #define PDFTRANS_ISOLATED 0x0200
 #define PDFTRANS_KNOCKOUT 0x0400
 
 class CPDF_PageObjects {
  public:
-  CPDF_PageObjects(FX_BOOL bReleaseMembers = TRUE);
+  CPDF_PageObjects();
   ~CPDF_PageObjects();
 
   void ContinueParse(IFX_Pause* pPause);
 
   FX_BOOL IsParsed() const { return m_ParseState == CONTENT_PARSED; }
 
   FX_POSITION GetFirstObjectPosition() const {
     return m_ObjectList.GetHeadPosition();
   }
 
   FX_POSITION GetLastObjectPosition() const {
     return m_ObjectList.GetTailPosition();
   }
 
   CPDF_PageObject* GetNextObject(FX_POSITION& pos) const {
     return (CPDF_PageObject*)m_ObjectList.GetNext(pos);
   }
 
   CPDF_PageObject* GetPrevObject(FX_POSITION& pos) const {
     return (CPDF_PageObject*)m_ObjectList.GetPrev(pos);
   }
 
   CPDF_PageObject* GetObjectAt(FX_POSITION pos) const {
     return (CPDF_PageObject*)m_ObjectList.GetAt(pos);
   }
 
+  void AddTail(CPDF_PageObject* obj) { m_ObjectList.AddTail(obj); }
   FX_DWORD CountObjects() const { return m_ObjectList.GetCount(); }
 
   int GetObjectIndex(CPDF_PageObject* pObj) const;
 
   CPDF_PageObject* GetObjectByIndex(int index) const;
 
   FX_POSITION InsertObject(FX_POSITION posInsertAfter,
                            CPDF_PageObject* pNewObject);
 
   void Transform(const CFX_Matrix& matrix);
 
   FX_BOOL BackgroundAlphaNeeded() const { return m_bBackgroundAlphaNeeded; }
+  void SetBackgroundAlphaNeeded(FX_BOOL needed) {
+    m_bBackgroundAlphaNeeded = needed;
+  }
 
   FX_BOOL HasImageMask() const { return m_bHasImageMask; }
-
+  void SetHasImageMask(FX_BOOL value) { m_bHasImageMask = value; }
   CFX_FloatRect CalcBoundingBox() const;
 
   CPDF_Dictionary* m_pFormDict;
   CPDF_Stream* m_pFormStream;
   CPDF_Document* m_pDocument;
   CPDF_Dictionary* m_pPageResources;
   CPDF_Dictionary* m_pResources;
   CFX_FloatRect m_BBox;
   int m_Transparency;
 
  protected:
-  friend class CPDF_ContentParser;
-  friend class CPDF_StreamContentParser;
-  friend class CPDF_AllStates;
-
   enum ParseState { CONTENT_NOT_PARSED, CONTENT_PARSING, CONTENT_PARSED };
 
   void LoadTransInfo();
-  void ClearCacheObjects();
 
-  CFX_PtrList m_ObjectList;
   FX_BOOL m_bBackgroundAlphaNeeded;
   FX_BOOL m_bHasImageMask;
-  FX_BOOL m_bReleaseMembers;
-  CPDF_ContentParser* m_pParser;
   ParseState m_ParseState;
+  std::unique_ptr<CPDF_ContentParser> m_pParser;
+  CFX_PtrList m_ObjectList;
 };
 
 class CPDF_Page : public CPDF_PageObjects, public CFX_PrivateData {
  public:
   CPDF_Page();
   ~CPDF_Page();
 
   void Load(CPDF_Document* pDocument,
             CPDF_Dictionary* pPageDict,
             FX_BOOL bPageCache = TRUE);
 
-  void StartParse(CPDF_ParseOptions* pOptions = NULL, FX_BOOL bReParse = FALSE);
-  void ParseContent(CPDF_ParseOptions* pOptions = NULL,
-                    FX_BOOL bReParse = FALSE);
+  void ParseContent(CPDF_ParseOptions* pOptions);
 
   void GetDisplayMatrix(CFX_Matrix& matrix,
                         int xPos,
                         int yPos,
                         int xSize,
                         int ySize,
                         int iRotate) const;
 
   FX_FLOAT GetPageWidth() const { return m_PageWidth; }
   FX_FLOAT GetPageHeight() const { return m_PageHeight; }
   CFX_FloatRect GetPageBBox() const { return m_BBox; }
   const CFX_Matrix& GetPageMatrix() const { return m_PageMatrix; }
   CPDF_Object* GetPageAttr(const CFX_ByteStringC& name) const;
   CPDF_PageRenderCache* GetRenderCache() const { return m_pPageRender; }
 
  protected:
   friend class CPDF_ContentParser;
+  void StartParse(CPDF_ParseOptions* pOptions);
+
   FX_FLOAT m_PageWidth;
   FX_FLOAT m_PageHeight;
   CFX_Matrix m_PageMatrix;
   CPDF_PageRenderCache* m_pPageRender;
 };
 class CPDF_ParseOptions {
  public:
   CPDF_ParseOptions();
 
   FX_BOOL m_bTextOnly;
@@ skipping 43 matching lines @@
                    CFX_Matrix& matrix);
   CFX_ByteString RealizeResource(CPDF_Object* pResourceObj,
                                  const FX_CHAR* szType);
 
   CPDF_Page* m_pPage;
   CPDF_Document* m_pDocument;
   CFX_ArrayTemplate<CPDF_PageObject*> m_pageObjects;
 };
 
 #endif  // CORE_INCLUDE_FPDFAPI_FPDF_PAGE_H_