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_FXFA_PARSER_XFA_LAYOUT_ITEMLAYOUT_H_ 8 #define XFA_FXFA_PARSER_XFA_LAYOUT_ITEMLAYOUT_H_ 9 10 #include <float.h> 11 12 #include <list> 13 #include <map> 14 #include <tuple> 15 #include <vector> 16 17 #include "core/fxcrt/fx_basic.h" 18 #include "core/fxcrt/fx_coordinates.h" 19 #include "xfa/fxfa/fxfa_basic.h" 20 21 #define XFA_LAYOUT_INVALIDNODE ((CXFA_Node*)(intptr_t)-1) 22 #define XFA_LAYOUT_FLOAT_PERCISION (0.0005f) 23 24 class CXFA_ContainerLayoutItem; 25 class CXFA_ContentLayoutItem; 26 class CXFA_ItemLayoutProcessor; 27 class CXFA_LayoutPageMgr; 28 class CXFA_LayoutProcessor; 29 class CXFA_Node; 30 31 enum class XFA_ItemLayoutProcessorResult { 32 Done, 33 PageFullBreak, 34 RowFullBreak, 35 ManualBreak, 36 }; 37 38 enum class XFA_ItemLayoutProcessorStages { 39 None, 40 BookendLeader, 41 BreakBefore, 42 Keep, 43 Container, 44 BreakAfter, 45 BookendTrailer, 46 Done, 47 }; 48 49 class CXFA_LayoutContext { 50 public: 51 CXFA_LayoutContext() 52 : m_prgSpecifiedColumnWidths(nullptr), 53 m_fCurColumnWidth(0), 54 m_bCurColumnWidthAvaiable(false), 55 m_pOverflowProcessor(nullptr), 56 m_pOverflowNode(nullptr) {} 57 ~CXFA_LayoutContext() {} 58 59 CFX_ArrayTemplate<FX_FLOAT>* m_prgSpecifiedColumnWidths; 60 FX_FLOAT m_fCurColumnWidth; 61 bool m_bCurColumnWidthAvaiable; 62 CXFA_ItemLayoutProcessor* m_pOverflowProcessor; 63 CXFA_Node* m_pOverflowNode; 64 }; 65 66 bool XFA_ItemLayoutProcessor_IsTakingSpace(CXFA_Node* pNode); 67 68 class CXFA_ItemLayoutProcessor { 69 public: 70 static bool IncrementRelayoutNode(CXFA_LayoutProcessor* pLayoutProcessor, 71 CXFA_Node* pNode, 72 CXFA_Node* pParentNode); 73 74 CXFA_ItemLayoutProcessor(CXFA_Node* pNode, CXFA_LayoutPageMgr* pPageMgr); 75 ~CXFA_ItemLayoutProcessor(); 76 77 XFA_ItemLayoutProcessorResult DoLayout(bool bUseBreakControl, 78 FX_FLOAT fHeightLimit, 79 FX_FLOAT fRealHeight, 80 CXFA_LayoutContext* pContext); 81 void DoLayoutPageArea(CXFA_ContainerLayoutItem* pPageAreaLayoutItem); 82 83 CFX_SizeF GetCurrentComponentSize(); 84 CXFA_Node* GetFormNode() { return m_pFormNode; } 85 bool HasLayoutItem() const { return !!m_pLayoutItem; } 86 CXFA_ContentLayoutItem* ExtractLayoutItem(); 87 void SplitLayoutItem(FX_FLOAT fSplitPos); 88 89 FX_FLOAT FindSplitPos(FX_FLOAT fProposedSplitPos); 90 91 bool ProcessKeepForSplit( 92 CXFA_ItemLayoutProcessor* pParentProcessor, 93 CXFA_ItemLayoutProcessor* pChildProcessor, 94 XFA_ItemLayoutProcessorResult eRetValue, 95 CFX_ArrayTemplate<CXFA_ContentLayoutItem*>* rgCurLineLayoutItem, 96 FX_FLOAT* fContentCurRowAvailWidth, 97 FX_FLOAT* fContentCurRowHeight, 98 FX_FLOAT* fContentCurRowY, 99 bool* bAddedItemInRow, 100 bool* bForceEndPage, 101 XFA_ItemLayoutProcessorResult* result); 102 void ProcessUnUseOverFlow(CXFA_Node* pLeaderNode, 103 CXFA_Node* pTrailerNode, 104 CXFA_ContentLayoutItem* pTrailerItem, 105 CXFA_Node* pFormNode); 106 bool IsAddNewRowForTrailer(CXFA_ContentLayoutItem* pTrailerItem); 107 bool JudgeLeaderOrTrailerForOccur(CXFA_Node* pFormNode); 108 109 CXFA_ContentLayoutItem* CreateContentLayoutItem(CXFA_Node* pFormNode); 110 111 CXFA_Node* m_pFormNode; 112 CXFA_ContentLayoutItem* m_pLayoutItem; 113 CXFA_Node* m_pCurChildNode; 114 FX_FLOAT m_fUsedSize; 115 CXFA_LayoutPageMgr* m_pPageMgr; 116 std::list<CXFA_Node*> m_PendingNodes; 117 bool m_bBreakPending; 118 CFX_ArrayTemplate<FX_FLOAT> m_rgSpecifiedColumnWidths; 119 std::vector<CXFA_ContentLayoutItem*> m_arrayKeepItems; 120 FX_FLOAT m_fLastRowWidth; 121 FX_FLOAT m_fLastRowY; 122 bool m_bUseInheriated; 123 XFA_ItemLayoutProcessorResult m_ePreProcessRs; 124 125 private: 126 void SetCurrentComponentPos(const CFX_PointF& pos); 127 void SetCurrentComponentSize(const CFX_SizeF& size); 128 129 void SplitLayoutItem(CXFA_ContentLayoutItem* pLayoutItem, 130 CXFA_ContentLayoutItem* pSecondParent, 131 FX_FLOAT fSplitPos); 132 FX_FLOAT InsertKeepLayoutItems(); 133 bool CalculateRowChildPosition( 134 CFX_ArrayTemplate<CXFA_ContentLayoutItem*> (&rgCurLineLayoutItems)[3], 135 XFA_ATTRIBUTEENUM eFlowStrategy, 136 bool bContainerHeightAutoSize, 137 bool bContainerWidthAutoSize, 138 FX_FLOAT* fContentCalculatedWidth, 139 FX_FLOAT* fContentCalculatedHeight, 140 FX_FLOAT* fContentCurRowY, 141 FX_FLOAT fContentCurRowHeight, 142 FX_FLOAT fContentWidthLimit, 143 bool bRootForceTb); 144 void ProcessUnUseBinds(CXFA_Node* pFormNode); 145 bool JudgePutNextPage(CXFA_ContentLayoutItem* pParentLayoutItem, 146 FX_FLOAT fChildHeight, 147 std::vector<CXFA_ContentLayoutItem*>* pKeepItems); 148 149 void DoLayoutPositionedContainer(CXFA_LayoutContext* pContext); 150 void DoLayoutTableContainer(CXFA_Node* pLayoutNode); 151 XFA_ItemLayoutProcessorResult DoLayoutFlowedContainer( 152 bool bUseBreakControl, 153 XFA_ATTRIBUTEENUM eFlowStrategy, 154 FX_FLOAT fHeightLimit, 155 FX_FLOAT fRealHeight, 156 CXFA_LayoutContext* pContext, 157 bool bRootForceTb); 158 void DoLayoutField(); 159 160 void GotoNextContainerNode(CXFA_Node*& pCurActionNode, 161 XFA_ItemLayoutProcessorStages& nCurStage, 162 CXFA_Node* pParentContainer, 163 bool bUsePageBreak); 164 165 bool ProcessKeepNodesForCheckNext(CXFA_Node*& pCurActionNode, 166 XFA_ItemLayoutProcessorStages& nCurStage, 167 CXFA_Node*& pNextContainer, 168 bool& bLastKeepNode); 169 170 bool ProcessKeepNodesForBreakBefore(CXFA_Node*& pCurActionNode, 171 XFA_ItemLayoutProcessorStages& nCurStage, 172 CXFA_Node* pContainerNode); 173 174 CXFA_Node* GetSubformSetParent(CXFA_Node* pSubformSet); 175 176 bool m_bKeepBreakFinish; 177 bool m_bIsProcessKeep; 178 CXFA_Node* m_pKeepHeadNode; 179 CXFA_Node* m_pKeepTailNode; 180 CXFA_ContentLayoutItem* m_pOldLayoutItem; 181 CXFA_ItemLayoutProcessor* m_pCurChildPreprocessor; 182 XFA_ItemLayoutProcessorStages m_nCurChildNodeStage; 183 std::map<CXFA_Node*, int32_t> m_PendingNodesCount; 184 FX_FLOAT m_fWidthLimite; 185 bool m_bHasAvailHeight; 186 }; 187 188 #endif // XFA_FXFA_PARSER_XFA_LAYOUT_ITEMLAYOUT_H_ 189
