Home | History | Annotate | Download | only in reflow 
      1 // Copyright 2014 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
      6 
      7 #ifndef _AUTOREFLOW_H
      8 #define _AUTOREFLOW_H
      9 #include "../../include/reflow/reflowengine.h"
     10 #include "reflowedpage.h"
     11 class CPDF_AutoReflowElement;
     12 class CPDF_AutoReflowLayoutProvider;
     13 typedef CFX_ArrayTemplate<CPDF_AutoReflowElement*> CAR_ElmPtrArray;
     14 typedef CFX_ArrayTemplate<CPDF_PageObject*> CAR_ObjPtrArray;
     15 class CRF_CELL : public CFX_Object
     16 {
     17 public:
     18     CRF_CELL() { };
     19     ~CRF_CELL() { };
     20     CFX_PtrList		m_ObjList;
     21     int			m_CellWritingMode;
     22     FX_RECT		m_BBox;
     23 };
     24 class CPDF_AutoReflowElement : public IPDF_LayoutElement, public CFX_Object
     25 {
     26 public:
     27     CPDF_AutoReflowElement(LayoutType layoutType = LayoutUnknown , CPDF_AutoReflowElement* pParent = NULL) ;
     28     ~CPDF_AutoReflowElement();
     29     LayoutType GetType()
     30     {
     31         return m_ElmType;
     32     }
     33     void	GetRect(CFX_FloatRect& rcRect) {};
     34 
     35     int  CountAttrValues(LayoutAttr attr_type);
     36     LayoutEnum  GetEnumAttr(LayoutAttr attr_type, int index);
     37     FX_FLOAT GetNumberAttr(LayoutAttr attr_type, int index);
     38     FX_COLORREF GetColorAttr(LayoutAttr attr_type, int index);
     39 
     40     int  CountChildren()
     41     {
     42         return m_ChildArray.GetSize();
     43     }
     44     IPDF_LayoutElement* GetChild(int index)
     45     {
     46         return m_ChildArray.GetAt(index);
     47     }
     48 
     49     IPDF_LayoutElement* GetParent()
     50     {
     51         return m_pParentElm;
     52     }
     53     int		CountObjects()
     54     {
     55         return m_ObjArray.GetSize();
     56     }
     57     CPDF_PageObject*	GetObject(int index)
     58     {
     59         return m_ObjArray.GetAt(index);
     60     }
     61     CPDF_AutoReflowElement* m_pParentElm;
     62     LayoutType		m_ElmType;
     63     CAR_ElmPtrArray m_ChildArray;
     64     CAR_ObjPtrArray m_ObjArray;
     65     FX_FLOAT		m_SpaceBefore;
     66 };
     67 #define AUTOREFLOW_STEP_GENERATELINE		1
     68 #define AUTOREFLOW_STEP_GENERATEParagraph	2
     69 #define AUTOREFLOW_STEP_CREATEELEMENT		3
     70 #define AUTOREFLOW_STEP_REMOVEDATA			4
     71 class CPDF_AutoReflowLayoutProvider : public IPDF_LayoutProvider, public CFX_Object
     72 {
     73 public:
     74     CPDF_AutoReflowLayoutProvider(CPDF_PageObjects* pPage, FX_BOOL bReadOrder);
     75     ~CPDF_AutoReflowLayoutProvider();
     76     void	SetLayoutProviderStyle(LAYOUTPROVIDER_STYLE Style)
     77     {
     78         m_Style = Style;
     79     }
     80     LayoutStatus StartLoad(IFX_Pause* pPause = NULL);
     81     LayoutStatus Continue();
     82     int	 		GetPosition();
     83     IPDF_LayoutElement* GetRoot()
     84     {
     85         return m_pRoot;
     86     }
     87     FX_FLOAT GetObjMinCell(CPDF_PageObject* pObj);
     88     void Conver2AppreceOrder(const CPDF_PageObjects* pStreamOrderObjs, CPDF_PageObjects* pAppraceOrderObjs);
     89     void	ReleaseElm(CPDF_AutoReflowElement*& pElm, FX_BOOL bReleaseChildren = TRUE);
     90     void GenerateCell();
     91     void GenerateStructTree();
     92     void GenerateLine(CFX_PtrArray& cellArray);
     93     void GenerateParagraph(CFX_PtrArray& cellArray);
     94     void CreateElement();
     95     void AddObjectArray(CPDF_AutoReflowElement* pElm, CFX_PtrList& ObjList);
     96     FX_FLOAT GetLayoutOrderHeight(CPDF_PageObject* pCurObj);
     97     FX_FLOAT GetLayoutOrderWidth(CPDF_PageObject* pCurObj);
     98     int GetWritingMode(CPDF_PageObject* pPreObj, CPDF_PageObject* pCurObj);
     99     int GetRectStart(FX_RECT rect);
    100     int GetRectEnd(FX_RECT rect);
    101     int GetRectTop(FX_RECT rect);
    102     int GetRectBottom(FX_RECT rect);
    103     int GetRectHeight(FX_RECT rect);
    104     int GetRectWidth(FX_RECT rect);
    105     void ProcessObj(CFX_PtrArray& cellArray, CPDF_PageObject* pObj, CFX_AffineMatrix matrix);
    106     FX_INT32 LogicPreObj(CPDF_PageObject* pObj);
    107 
    108     CPDF_AutoReflowElement* m_pRoot;
    109     CPDF_AutoReflowElement* m_pCurrElm;
    110     CPDF_Page*	m_pPDFPage;
    111     IFX_Pause*	m_pPause;
    112     CFX_AffineMatrix m_PDFDisplayMatrix;
    113     CPDF_PageObject* m_pPreObj;
    114     LayoutStatus m_Status;
    115     int m_WritingMode;
    116     CFX_PtrArray m_CellArray;
    117     FX_BOOL		 m_bReadOrder;
    118     LAYOUTPROVIDER_STYLE m_Style;
    119     CFX_PtrArray m_cellArray;
    120     int			m_Step;
    121 };
    122 #endif
    123