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      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 _XFA_DOCLAYOUT_H_
      8 #define _XFA_DOCLAYOUT_H_
      9 #define _XFA_LAYOUTITEM_ProcessCACHE_
     10 
     11 class CXFA_ContainerLayoutItem;
     12 class CXFA_ContentLayoutItem;
     13 
     14 class IXFA_LayoutPage {
     15  public:
     16   virtual ~IXFA_LayoutPage() {}
     17   virtual IXFA_DocLayout* GetLayout() const = 0;
     18   virtual int32_t GetPageIndex() const = 0;
     19   virtual void GetPageSize(CFX_SizeF& size) = 0;
     20   virtual CXFA_Node* GetMasterPage() const = 0;
     21 };
     22 
     23 class CXFA_LayoutItem {
     24  public:
     25   virtual ~CXFA_LayoutItem();
     26 
     27   FX_BOOL IsContainerLayoutItem() const { return !m_bIsContentLayoutItem; }
     28   FX_BOOL IsContentLayoutItem() const { return m_bIsContentLayoutItem; }
     29   inline CXFA_ContainerLayoutItem* AsContainerLayoutItem();
     30   inline CXFA_ContentLayoutItem* AsContentLayoutItem();
     31 
     32   IXFA_LayoutPage* GetPage() const;
     33   CXFA_Node* GetFormNode() const;
     34   void GetRect(CFX_RectF& rtLayout, FX_BOOL bRelative = FALSE) const;
     35   int32_t GetIndex() const;
     36   int32_t GetCount() const;
     37   CXFA_LayoutItem* GetParent() const;
     38   const CXFA_LayoutItem* GetFirst() const;
     39   CXFA_LayoutItem* GetFirst();
     40   const CXFA_LayoutItem* GetLast() const;
     41   CXFA_LayoutItem* GetLast();
     42   CXFA_LayoutItem* GetPrev() const;
     43   CXFA_LayoutItem* GetNext() const;
     44 
     45   void AddChild(CXFA_LayoutItem* pChildItem);
     46   void AddHeadChild(CXFA_LayoutItem* pChildItem);
     47   void RemoveChild(CXFA_LayoutItem* pChildItem);
     48   void InsertChild(CXFA_LayoutItem* pBeforeItem, CXFA_LayoutItem* pChildItem);
     49 
     50   CXFA_Node* m_pFormNode;
     51   CXFA_LayoutItem* m_pParent;
     52   CXFA_LayoutItem* m_pNextSibling;
     53   CXFA_LayoutItem* m_pFirstChild;
     54 
     55  protected:
     56   CXFA_LayoutItem(CXFA_Node* pNode, FX_BOOL bIsContentLayoutItem);
     57 
     58   FX_BOOL m_bIsContentLayoutItem;
     59 };
     60 
     61 class CXFA_ContainerLayoutItem : public CXFA_LayoutItem,
     62                                  public IXFA_LayoutPage {
     63  public:
     64   CXFA_ContainerLayoutItem(CXFA_Node* pNode);
     65 
     66   // IXFA_LayoutPage:
     67   IXFA_DocLayout* GetLayout() const override;
     68   int32_t GetPageIndex() const override;
     69   void GetPageSize(CFX_SizeF& size) override;
     70   CXFA_Node* GetMasterPage() const override;
     71 
     72   CXFA_Node* m_pOldSubform;
     73 };
     74 
     75 #define XFA_WIDGETSTATUS_Access 0x80000000
     76 #define XFA_WIDGETSTATUS_Disabled 0x40000000
     77 #define XFA_WIDGETSTATUS_RectCached 0x20000000
     78 #define XFA_WIDGETSTATUS_ButtonDown 0x10000000
     79 #define XFA_WIDGETSTATUS_Highlight 0x08000000
     80 #define XFA_WIDGETSTATUS_TextEditValueChanged 0x04000000
     81 
     82 class CXFA_ContentLayoutItem : public CXFA_LayoutItem {
     83  public:
     84   CXFA_ContentLayoutItem(CXFA_Node* pNode);
     85   virtual ~CXFA_ContentLayoutItem();
     86 
     87   CXFA_ContentLayoutItem* m_pPrev;
     88   CXFA_ContentLayoutItem* m_pNext;
     89   CFX_PointF m_sPos;
     90   CFX_SizeF m_sSize;
     91   FX_DWORD m_dwStatus;
     92 };
     93 
     94 CXFA_ContainerLayoutItem* CXFA_LayoutItem::AsContainerLayoutItem() {
     95   return IsContainerLayoutItem() ? static_cast<CXFA_ContainerLayoutItem*>(this)
     96                                  : nullptr;
     97 }
     98 CXFA_ContentLayoutItem* CXFA_LayoutItem::AsContentLayoutItem() {
     99   return IsContentLayoutItem() ? static_cast<CXFA_ContentLayoutItem*>(this)
    100                                : nullptr;
    101 }
    102 inline CXFA_ContainerLayoutItem* ToContainerLayoutItem(CXFA_LayoutItem* pItem) {
    103   return pItem ? pItem->AsContainerLayoutItem() : nullptr;
    104 }
    105 inline CXFA_ContentLayoutItem* ToContentLayoutItem(CXFA_LayoutItem* pItem) {
    106   return pItem ? pItem->AsContentLayoutItem() : nullptr;
    107 }
    108 
    109 class CXFA_TraverseStrategy_LayoutItem {
    110  public:
    111   static inline CXFA_LayoutItem* GetFirstChild(CXFA_LayoutItem* pLayoutItem) {
    112     return pLayoutItem->m_pFirstChild;
    113   }
    114   static inline CXFA_LayoutItem* GetNextSibling(CXFA_LayoutItem* pLayoutItem) {
    115     return pLayoutItem->m_pNextSibling;
    116   }
    117   static inline CXFA_LayoutItem* GetParent(CXFA_LayoutItem* pLayoutItem) {
    118     return pLayoutItem->m_pParent;
    119   }
    120 };
    121 
    122 class IXFA_DocLayout {
    123  public:
    124   virtual ~IXFA_DocLayout() {}
    125   virtual CXFA_Document* GetDocument() const = 0;
    126   virtual int32_t StartLayout(FX_BOOL bForceRestart = FALSE) = 0;
    127   virtual int32_t DoLayout(IFX_Pause* pPause = NULL) = 0;
    128   virtual FX_BOOL IncrementLayout() = 0;
    129   virtual int32_t CountPages() const = 0;
    130   virtual IXFA_LayoutPage* GetPage(int32_t index) const = 0;
    131   virtual CXFA_LayoutItem* GetLayoutItem(CXFA_Node* pFormItem) = 0;
    132 };
    133 #endif
    134