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_LAYOUT_ITEMLAYOUT_H_ 8 #define _XFA_LAYOUT_ITEMLAYOUT_H_ 9 #define XFA_LAYOUT_INVALIDNODE ((CXFA_Node*)(intptr_t)-1) 10 #define XFA_LAYOUT_FLOAT_PERCISION (0.0005f) 11 #include "float.h" 12 #define XFA_LAYOUT_FLOAT_MAX FLT_MAX 13 class CXFA_ItemLayoutProcessor; 14 class CXFA_LayoutPageMgr; 15 class CXFA_ContainerLayoutItem; 16 class CXFA_ContentLayoutItem; 17 enum XFA_ItemLayoutProcessorResult { 18 XFA_ItemLayoutProcessorResult_Done, 19 XFA_ItemLayoutProcessorResult_PageFullBreak, 20 XFA_ItemLayoutProcessorResult_RowFullBreak, 21 XFA_ItemLayoutProcessorResult_ManualBreak, 22 }; 23 enum XFA_ItemLayoutProcessorStages { 24 XFA_ItemLayoutProcessorStages_None, 25 XFA_ItemLayoutProcessorStages_BookendLeader, 26 XFA_ItemLayoutProcessorStages_BreakBefore, 27 XFA_ItemLayoutProcessorStages_Keep, 28 XFA_ItemLayoutProcessorStages_Container, 29 XFA_ItemLayoutProcessorStages_BreakAfter, 30 XFA_ItemLayoutProcessorStages_BookendTrailer, 31 XFA_ItemLayoutProcessorStages_Done, 32 }; 33 34 class CXFA_LayoutContext { 35 public: 36 CXFA_LayoutContext() 37 : m_prgSpecifiedColumnWidths(NULL), 38 m_fCurColumnWidth(0), 39 m_bCurColumnWidthAvaiable(FALSE), 40 m_pOverflowProcessor(NULL), 41 m_pOverflowNode(NULL) {} 42 ~CXFA_LayoutContext() { m_pOverflowProcessor = NULL; } 43 CFX_ArrayTemplate<FX_FLOAT>* m_prgSpecifiedColumnWidths; 44 FX_FLOAT m_fCurColumnWidth; 45 FX_BOOL m_bCurColumnWidthAvaiable; 46 CXFA_ItemLayoutProcessor* m_pOverflowProcessor; 47 CXFA_Node* m_pOverflowNode; 48 }; 49 50 class CXFA_ItemLayoutProcessor { 51 public: 52 CXFA_ItemLayoutProcessor(CXFA_Node* pNode, CXFA_LayoutPageMgr* pPageMgr); 53 54 XFA_ItemLayoutProcessorResult DoLayout( 55 FX_BOOL bUseBreakControl, 56 FX_FLOAT fHeightLimit, 57 FX_FLOAT fRealHeight = XFA_LAYOUT_FLOAT_MAX, 58 CXFA_LayoutContext* pContext = NULL); 59 60 void GetCurrentComponentPos(FX_FLOAT& fAbsoluteX, FX_FLOAT& fAbsoluteY); 61 62 void GetCurrentComponentSize(FX_FLOAT& fWidth, FX_FLOAT& fHeight); 63 64 void SetCurrentComponentPos(FX_FLOAT fAbsoluteX, FX_FLOAT fAbsoluteY); 65 66 void SetCurrentComponentSize(FX_FLOAT fWidth, FX_FLOAT fHeight); 67 inline CXFA_Node* GetFormNode() { return m_pFormNode; } 68 inline FX_BOOL HasLayoutItem() { return m_pLayoutItem != NULL; } 69 CXFA_ContentLayoutItem* ExtractLayoutItem(); 70 71 static FX_BOOL IncrementRelayoutNode(CXFA_LayoutProcessor* pLayoutProcessor, 72 CXFA_Node* pNode, 73 CXFA_Node* pParentNode); 74 static void CalculatePositionedContainerPos(CXFA_Node* pNode, 75 FX_FLOAT fWidth, 76 FX_FLOAT fHeight, 77 FX_FLOAT& fAbsoluteX, 78 FX_FLOAT& fAbsoluteY); 79 static FX_BOOL FindLayoutItemSplitPos(CXFA_ContentLayoutItem* pLayoutItem, 80 FX_FLOAT fCurVerticalOffset, 81 FX_FLOAT& fProposedSplitPos, 82 FX_BOOL& bAppChange, 83 FX_BOOL bCalculateMargin = TRUE); 84 FX_FLOAT FindSplitPos(FX_FLOAT fProposedSplitPos); 85 void SplitLayoutItem(CXFA_ContentLayoutItem* pLayoutItem, 86 CXFA_ContentLayoutItem* pSecondParent, 87 FX_FLOAT fSplitPos); 88 void SplitLayoutItem(FX_FLOAT fSplitPos); 89 FX_BOOL JudgePutNextPage( 90 CXFA_ContentLayoutItem* pParentLayoutItem, 91 FX_FLOAT fChildHeight, 92 CFX_ArrayTemplate<CXFA_ContentLayoutItem*>& pKeepItems); 93 FX_BOOL ProcessKeepForSplite( 94 CXFA_ItemLayoutProcessor* pParentProcessor, 95 CXFA_ItemLayoutProcessor* pChildProcessor, 96 XFA_ItemLayoutProcessorResult eRetValue, 97 CFX_ArrayTemplate<CXFA_ContentLayoutItem*>& rgCurLineLayoutItem, 98 FX_FLOAT& fContentCurRowAvailWidth, 99 FX_FLOAT& fContentCurRowHeight, 100 FX_FLOAT& fContentCurRowY, 101 FX_BOOL& bAddedItemInRow, 102 FX_BOOL& bForceEndPage, 103 XFA_ItemLayoutProcessorResult& result); 104 FX_FLOAT InsertKeepLayoutItems(); 105 void DoLayoutPageArea(CXFA_ContainerLayoutItem* pPageAreaLayoutItem); 106 FX_BOOL CalculateRowChildPosition( 107 CFX_ArrayTemplate<CXFA_ContentLayoutItem*>(&rgCurLineLayoutItems)[3], 108 XFA_ATTRIBUTEENUM eFlowStrategy, 109 FX_BOOL bContainerHeightAutoSize, 110 FX_BOOL bContainerWidthAutoSize, 111 FX_FLOAT& fContentCalculatedWidth, 112 FX_FLOAT& fContentCalculatedHeight, 113 FX_FLOAT& fContentCurRowY, 114 FX_FLOAT fContentCurRowHeight, 115 FX_FLOAT fContentWidthLimit, 116 FX_BOOL bRootForceTb = FALSE); 117 118 void ProcessUnUseOverFlow(CXFA_Node* pLeaderNode, 119 CXFA_Node* pTrailerNode, 120 CXFA_ContentLayoutItem* pTrailerItem, 121 CXFA_Node* pFormNode); 122 void ProcessUnUseBinds(CXFA_Node* pFormNode); 123 FX_BOOL IsAddNewRowForTrailer(CXFA_ContentLayoutItem* pTrailerItem); 124 FX_BOOL JudgeLeaderOrTrailerForOccur(CXFA_Node* pFormNode); 125 CXFA_ContentLayoutItem* CreateContentLayoutItem(CXFA_Node* pFormNode); 126 127 protected: 128 void DoLayoutPositionedContainer(CXFA_LayoutContext* pContext = NULL); 129 void DoLayoutTableContainer(CXFA_Node* pLayoutNode); 130 XFA_ItemLayoutProcessorResult DoLayoutFlowedContainer( 131 FX_BOOL bUseBreakControl, 132 XFA_ATTRIBUTEENUM eFlowStrategy, 133 FX_FLOAT fHeightLimit, 134 FX_FLOAT fRealHeight, 135 CXFA_LayoutContext* pContext = NULL, 136 FX_BOOL bRootForceTb = FALSE); 137 void DoLayoutField(); 138 void XFA_ItemLayoutProcessor_GotoNextContainerNode( 139 CXFA_Node*& pCurActionNode, 140 XFA_ItemLayoutProcessorStages& nCurStage, 141 CXFA_Node* pParentContainer, 142 FX_BOOL bUsePageBreak); 143 144 FX_BOOL ProcessKeepNodesForCheckNext(CXFA_Node*& pCurActionNode, 145 XFA_ItemLayoutProcessorStages& nCurStage, 146 CXFA_Node*& pNextContainer, 147 FX_BOOL& bLastKeepNode); 148 149 FX_BOOL ProcessKeepNodesForBreakBefore( 150 CXFA_Node*& pCurActionNode, 151 XFA_ItemLayoutProcessorStages& nCurStage, 152 CXFA_Node* pContainerNode); 153 154 CXFA_Node* GetSubformSetParent(CXFA_Node* pSubformSet); 155 156 public: 157 FX_BOOL m_bKeepBreakFinish; 158 FX_BOOL m_bIsProcessKeep; 159 CXFA_Node* m_pKeepHeadNode; 160 CXFA_Node* m_pKeepTailNode; 161 CXFA_Node* m_pFormNode; 162 CXFA_ContentLayoutItem* m_pLayoutItem; 163 #ifdef _XFA_LAYOUTITEM_ProcessCACHE_ 164 CXFA_ContentLayoutItem* m_pOldLayoutItem; 165 #else 166 CXFA_LayoutPageMgr* m_pPageMgrCreateItem; 167 #endif 168 CXFA_Node* m_pCurChildNode; 169 CXFA_ItemLayoutProcessor* m_pCurChildPreprocessor; 170 XFA_ItemLayoutProcessorStages m_nCurChildNodeStage; 171 FX_FLOAT m_fUsedSize; 172 CXFA_LayoutPageMgr* m_pPageMgr; 173 CFX_PtrList m_rgPendingNodes; 174 FX_BOOL m_bBreakPending; 175 CFX_ArrayTemplate<FX_FLOAT> m_rgSpecifiedColumnWidths; 176 CFX_ArrayTemplate<CXFA_ContentLayoutItem*> m_arrayKeepItems; 177 CFX_MapPtrToPtr m_PendingNodesCount; 178 FX_FLOAT m_fLastRowWidth; 179 FX_FLOAT m_fLastRowY; 180 FX_FLOAT m_fWidthLimite; 181 FX_BOOL m_bUseInheriated; 182 XFA_ItemLayoutProcessorResult m_ePreProcessRs; 183 FX_BOOL m_bHasAvailHeight; 184 }; 185 FX_BOOL XFA_ItemLayoutProcessor_IsTakingSpace(CXFA_Node* pNode); 186 #endif 187
