| // 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 |
| |
| #include "autoreflow.h" |
| #define approachto(a,b,c) (FXSYS_fabs((float)((a)-(b)))>(c) ? 0 : 1) |
| int FPDF_ProcessInterObj(const CPDF_PageObject* pPrevObj, const CPDF_PageObject* pObj) |
| { |
| CFX_AffineMatrix matrix; |
| FX_RECT PreRect = pPrevObj->GetBBox(&matrix); |
| FX_RECT rect = pObj->GetBBox(&matrix); |
| int flag = 0; |
| if(PreRect.top > rect.bottom) { |
| flag = 0; |
| } else if(rect.top > PreRect.bottom) { |
| flag = 1; |
| } else if(PreRect.right < rect.left) { |
| flag = 0; |
| } else if(PreRect.left > rect.right) { |
| flag = 1; |
| } else if(pObj->m_Type != PDFPAGE_TEXT) { |
| flag = 1; |
| } else if(pPrevObj->m_Type != PDFPAGE_TEXT) { |
| flag = 0; |
| } else { |
| if((PreRect.top < rect.top && PreRect.bottom > rect.bottom) || |
| (PreRect.top > rect.top && PreRect.bottom < rect.bottom)) { |
| if(PreRect.left > rect.left) { |
| flag = 1; |
| } else { |
| flag = 0; |
| } |
| } else { |
| CPDF_TextObject* pPrevTextObj = (CPDF_TextObject* )pPrevObj; |
| CPDF_TextObject* pTextObj = (CPDF_TextObject* )pObj; |
| CPDF_TextObjectItem item, prevItem; |
| pPrevTextObj->GetItemInfo(0, &prevItem); |
| pTextObj->GetItemInfo(0, &item); |
| CFX_AffineMatrix TextMatrix; |
| pTextObj->GetTextMatrix(&TextMatrix); |
| FX_FLOAT originX, originY, prevOriginX, preOriginY; |
| TextMatrix.Transform(item.m_OriginX, item.m_OriginY, originX, originY); |
| pPrevTextObj->GetTextMatrix(&TextMatrix); |
| TextMatrix.Transform(prevItem.m_OriginX, prevItem.m_OriginY, prevOriginX, preOriginY); |
| if(preOriginY > originY) { |
| flag = 0; |
| } else { |
| flag = 1; |
| } |
| } |
| } |
| return flag; |
| } |
| void CPDF_AutoReflowLayoutProvider::Conver2AppreceOrder(const CPDF_PageObjects* pStreamOrderObjs, CPDF_PageObjects* pAppraceOrderObjs) |
| { |
| FX_POSITION pos = pStreamOrderObjs->GetFirstObjectPosition(); |
| CFX_AffineMatrix matrix; |
| while(pos) { |
| CPDF_PageObject* pObj = pStreamOrderObjs->GetNextObject(pos); |
| CFX_AffineMatrix matrix; |
| if(pObj->m_Type != PDFPAGE_TEXT) { |
| continue; |
| } |
| FX_POSITION pos1 = pAppraceOrderObjs->GetLastObjectPosition(); |
| while(pos1) { |
| CPDF_PageObject* pTempObj = pAppraceOrderObjs->GetPrevObject(pos1); |
| if(FPDF_ProcessInterObj(pObj, pTempObj) == 1) { |
| if(!pos1) { |
| pos1 = pAppraceOrderObjs->GetFirstObjectPosition(); |
| } else { |
| pAppraceOrderObjs->GetNextObject(pos1); |
| } |
| break; |
| } |
| } |
| pAppraceOrderObjs->InsertObject(pos1, pObj); |
| } |
| pos = pStreamOrderObjs->GetFirstObjectPosition(); |
| while(pos) { |
| CPDF_PageObject* pObj = pStreamOrderObjs->GetNextObject(pos); |
| if(pObj->m_Type != PDFPAGE_IMAGE) { |
| continue; |
| } |
| FX_POSITION pos1 = pAppraceOrderObjs->GetLastObjectPosition(); |
| while(pos1) { |
| CPDF_PageObject* pTempObj = pAppraceOrderObjs->GetPrevObject(pos1); |
| if(FPDF_ProcessInterObj(pObj, pTempObj) == 1) { |
| if(!pos1) { |
| pos1 = pAppraceOrderObjs->GetFirstObjectPosition(); |
| } else { |
| pAppraceOrderObjs->GetNextObject(pos1); |
| } |
| break; |
| } |
| } |
| pAppraceOrderObjs->InsertObject(pos1, pObj); |
| } |
| } |
| IPDF_LayoutProvider* IPDF_LayoutProvider::Create_LayoutProvider_AutoReflow(CPDF_PageObjects* pPage, FX_BOOL bReadOrder) |
| { |
| return FX_NEW CPDF_AutoReflowLayoutProvider(pPage, bReadOrder); |
| } |
| CPDF_AutoReflowElement::CPDF_AutoReflowElement(LayoutType layoutType , CPDF_AutoReflowElement* pParent) |
| { |
| m_ElmType = layoutType; |
| m_pParentElm = pParent; |
| if(pParent) { |
| pParent->m_ChildArray.Add(this); |
| } |
| m_SpaceBefore = 0; |
| } |
| CPDF_AutoReflowElement::~CPDF_AutoReflowElement() |
| { |
| m_ChildArray.RemoveAll(); |
| m_ObjArray.RemoveAll(); |
| } |
| int CPDF_AutoReflowElement::CountAttrValues(LayoutAttr attr_type) |
| { |
| return 1; |
| } |
| LayoutEnum CPDF_AutoReflowElement::GetEnumAttr(LayoutAttr attr_type, int index ) |
| { |
| return LayoutInvalid; |
| } |
| FX_FLOAT CPDF_AutoReflowElement::GetNumberAttr(LayoutAttr attr_type, int index ) |
| { |
| switch (attr_type) { |
| case LayoutSpaceBefore: |
| return m_SpaceBefore; |
| default: |
| return 0; |
| } |
| } |
| FX_COLORREF CPDF_AutoReflowElement::GetColorAttr(LayoutAttr attr_type, int index ) |
| { |
| return 0; |
| } |
| #define WritingMode_UNKNOW 0 |
| #define WritingMode_LRTB 1 |
| #define WritingMode_RLTB 2 |
| #define WritingMode_TBRL 3 |
| CPDF_AutoReflowLayoutProvider::CPDF_AutoReflowLayoutProvider(CPDF_PageObjects* pPage, FX_BOOL bReadOrder) |
| { |
| m_pPDFPage = (CPDF_Page*)pPage; |
| FX_FLOAT width = m_pPDFPage->GetPageWidth(); |
| FX_FLOAT height = m_pPDFPage->GetPageHeight(); |
| m_pPDFPage->GetDisplayMatrix(m_PDFDisplayMatrix, 0, 0, (int)(m_pPDFPage->GetPageWidth()), (int)(m_pPDFPage->GetPageHeight()), 0); |
| m_bReadOrder = bReadOrder; |
| m_Status = LayoutReady; |
| m_pRoot = NULL; |
| m_pCurrElm = NULL; |
| m_pPreObj = NULL; |
| m_Step = 0; |
| m_WritingMode = WritingMode_UNKNOW; |
| } |
| CPDF_AutoReflowLayoutProvider::~CPDF_AutoReflowLayoutProvider() |
| { |
| m_pPDFPage = NULL; |
| ReleaseElm(m_pRoot); |
| } |
| void CPDF_AutoReflowLayoutProvider::ReleaseElm(CPDF_AutoReflowElement*& pElm, FX_BOOL bReleaseChildren) |
| { |
| if(bReleaseChildren) { |
| int count = pElm->CountChildren(); |
| for(int i = 0; i < count; i++) { |
| CPDF_AutoReflowElement* pChild = (CPDF_AutoReflowElement*)pElm->GetChild(i); |
| ReleaseElm(pChild); |
| } |
| } |
| delete pElm; |
| pElm = NULL; |
| } |
| void CPDF_AutoReflowLayoutProvider::AddObjectArray(CPDF_AutoReflowElement* pElm, CFX_PtrList& ObjList) |
| { |
| if(!pElm) { |
| return; |
| } |
| FX_POSITION pos = ObjList.GetHeadPosition(); |
| while (pos) { |
| pElm->m_ObjArray.Add((CPDF_PageObject*)ObjList.GetNext(pos)); |
| } |
| } |
| void CPDF_AutoReflowLayoutProvider::GenerateStructTree() |
| { |
| if (m_Step < AUTOREFLOW_STEP_GENERATELINE) { |
| GenerateLine(m_cellArray); |
| if(m_cellArray.GetSize() == 0) { |
| m_Status = LayoutError; |
| return; |
| } |
| if(m_pPause && m_pPause->NeedToPauseNow()) { |
| m_Step = AUTOREFLOW_STEP_GENERATELINE; |
| m_Status = LayoutToBeContinued; |
| return; |
| } |
| } |
| if (m_Step < AUTOREFLOW_STEP_GENERATEParagraph) { |
| GenerateParagraph(m_cellArray); |
| if(m_pPause && m_pPause->NeedToPauseNow()) { |
| m_Step = AUTOREFLOW_STEP_GENERATEParagraph; |
| m_Status = LayoutToBeContinued; |
| return; |
| } |
| } |
| if (m_Step < AUTOREFLOW_STEP_CREATEELEMENT) { |
| CreateElement(); |
| if(m_pPause && m_pPause->NeedToPauseNow()) { |
| m_Step = AUTOREFLOW_STEP_CREATEELEMENT; |
| m_Status = LayoutToBeContinued; |
| return; |
| } |
| } |
| if (m_Step < AUTOREFLOW_STEP_REMOVEDATA) { |
| int count = m_cellArray.GetSize(); |
| for(int i = 0; i < count; i++) { |
| CRF_CELL* pCell = (CRF_CELL*)m_cellArray.GetAt(i); |
| if(pCell) { |
| pCell->m_ObjList.RemoveAll(); |
| delete pCell; |
| } |
| } |
| m_cellArray.RemoveAll(); |
| if(m_pPause && m_pPause->NeedToPauseNow()) { |
| m_Step = AUTOREFLOW_STEP_REMOVEDATA; |
| m_Status = LayoutToBeContinued; |
| return; |
| } |
| } |
| m_Step = AUTOREFLOW_STEP_REMOVEDATA; |
| m_Status = LayoutFinished; |
| return; |
| } |
| void CPDF_AutoReflowLayoutProvider::CreateElement() |
| { |
| int count = m_cellArray.GetSize(); |
| CRF_CELL* plastCell = NULL; |
| CRF_CELL* pCell = NULL; |
| CRF_CELL* pNextCell = NULL; |
| CPDF_AutoReflowElement* pParent = m_pRoot; |
| CPDF_AutoReflowElement* pCurrElm = NULL; |
| int i; |
| for(i = 0; i < count; i++) { |
| pCell = (CRF_CELL*)m_cellArray.GetAt(i); |
| if(!pCell) { |
| continue; |
| } |
| if(i < count - 1) { |
| pNextCell = (CRF_CELL*)m_cellArray.GetAt(i + 1); |
| } else { |
| pNextCell = NULL; |
| } |
| pCurrElm = NULL; |
| pCurrElm = FX_NEW CPDF_AutoReflowElement(LayoutParagraph, pParent); |
| if(pCurrElm->GetType() == LayoutParagraph && plastCell) { |
| int SpaceBefore = 0; |
| if(pCell->m_CellWritingMode != plastCell->m_CellWritingMode ) { |
| SpaceBefore = 20; |
| } else if(pCell->m_CellWritingMode == WritingMode_LRTB) { |
| SpaceBefore = plastCell->m_BBox.bottom - pCell->m_BBox.top; |
| } else if(pCell->m_CellWritingMode == WritingMode_TBRL) { |
| SpaceBefore = plastCell->m_BBox.left - pCell->m_BBox.right; |
| } |
| if(SpaceBefore > 0) { |
| pCurrElm->m_SpaceBefore = SpaceBefore > 50 ? 50.0f : SpaceBefore; |
| } |
| } |
| AddObjectArray(pCurrElm, pCell->m_ObjList); |
| plastCell = pCell; |
| } |
| } |
| void CPDF_AutoReflowLayoutProvider::GenerateParagraph(CFX_PtrArray& cellArray) |
| { |
| int count = cellArray.GetSize(); |
| if(count <= 1) { |
| return; |
| } |
| CRF_CELL* plastCell = (CRF_CELL*)cellArray.GetAt(0); |
| if(plastCell->m_BBox.Height() > plastCell->m_BBox.Width()) { |
| m_WritingMode = WritingMode_TBRL; |
| } else { |
| m_WritingMode = WritingMode_LRTB; |
| } |
| FX_BOOL bEnforce = FALSE; |
| int i = 0; |
| for(i = 1; i < count; i++) { |
| CRF_CELL* pCell = (CRF_CELL*)cellArray.GetAt(i); |
| if(!pCell) { |
| continue; |
| } |
| int c = pCell->m_ObjList.GetCount(); |
| FX_BOOL bMerge = FALSE; |
| FX_POSITION pos1 = plastCell->m_ObjList.GetTailPosition(); |
| CPDF_PageObject* pLastObj = (CPDF_PageObject*)plastCell->m_ObjList.GetPrev(pos1); |
| pos1 = pCell->m_ObjList.GetHeadPosition(); |
| CPDF_PageObject* pCurObj = (CPDF_PageObject*)pCell->m_ObjList.GetNext(pos1); |
| int WritingMode = GetRectEnd(pCell->m_BBox); |
| if(pCell->m_CellWritingMode == WritingMode_UNKNOW) { |
| if(pCell->m_BBox.Height() > pCell->m_BBox.Width()) { |
| pCell->m_CellWritingMode = WritingMode_TBRL; |
| } else { |
| pCell->m_CellWritingMode = WritingMode_LRTB; |
| } |
| } |
| WritingMode = pCell->m_CellWritingMode; |
| if(WritingMode == WritingMode_LRTB && (m_Style.m_Language & LP_Lang_ChinesePRC || m_Style.m_Language & LP_Lang_ChineseTaiwan |
| || m_Style.m_Language & LP_Lang_Japanese || m_Style.m_Language & LP_Lang_Korean)) { |
| if(pCurObj->m_Type == PDFPAGE_TEXT) { |
| CPDF_TextObject* pText; |
| pText = (CPDF_TextObject*)pCurObj; |
| if(pText->CountItems()) { |
| CPDF_TextObjectItem item; |
| pText->GetItemInfo(0, &item); |
| CFX_WideString str = pText->GetFont()->UnicodeFromCharCode(item.m_CharCode); |
| FX_WCHAR unicode = str.GetAt(0); |
| if(unicode == 32) { |
| plastCell = pCell; |
| bMerge = FALSE; |
| bEnforce = FALSE; |
| continue; |
| } |
| } |
| } |
| } |
| if(m_WritingMode == WritingMode) { |
| if(bEnforce) { |
| bMerge = FALSE; |
| bEnforce = FALSE; |
| if(pCurObj->m_Type == PDFPAGE_TEXT) { |
| CPDF_TextObject* pText; |
| pText = (CPDF_TextObject*)pCurObj; |
| if(pText->CountItems()) { |
| CPDF_TextObjectItem item; |
| pText->GetItemInfo(0, &item); |
| CFX_WideString str = pText->GetFont()->UnicodeFromCharCode(item.m_CharCode); |
| FX_WCHAR unicode = str.GetAt(0); |
| if(unicode > 96 && unicode < 123) { |
| bMerge = TRUE; |
| } |
| } |
| } else { |
| CPDF_ImageObject* pImage = (CPDF_ImageObject*)pCurObj; |
| FX_RECT imageBBox = pImage->GetBBox(&m_PDFDisplayMatrix); |
| if(GetRectEnd(plastCell->m_BBox) - GetRectEnd(pCell->m_BBox) < GetRectWidth(imageBBox)) { |
| bMerge = TRUE; |
| } |
| } |
| } else { |
| if(!approachto(GetRectStart(pCell->m_BBox), GetRectStart(plastCell->m_BBox), GetRectHeight(pCell->m_BBox) / 4)) { |
| if(approachto(GetRectStart(plastCell->m_BBox), GetRectStart(pCell->m_BBox), GetRectHeight(pCell->m_BBox) * 2.3) && |
| GetRectStart(plastCell->m_BBox) - GetRectStart(pCell->m_BBox) > 0) { |
| if(pCurObj->m_Type == PDFPAGE_TEXT || pLastObj->m_Type == PDFPAGE_TEXT) { |
| CPDF_TextObject* pText; |
| if(pCurObj->m_Type == PDFPAGE_TEXT) { |
| pText = (CPDF_TextObject*)pCurObj; |
| } else { |
| pText = (CPDF_TextObject*)pLastObj; |
| } |
| CPDF_TextObjectItem item; |
| pText->GetItemInfo(0, &item); |
| CFX_WideString str = pText->GetFont()->UnicodeFromCharCode(item.m_CharCode); |
| FX_WCHAR unicode = str.GetAt(0); |
| if(unicode > 255) { |
| bMerge = TRUE; |
| } |
| } |
| } |
| } else if(!approachto(GetRectEnd(pCell->m_BBox), GetRectEnd(plastCell->m_BBox), GetRectHeight(pCell->m_BBox) * 3)) { |
| FX_RECT rect = pLastObj->GetBBox(&m_PDFDisplayMatrix); |
| if(approachto(GetRectStart(pCell->m_BBox), GetRectStart(plastCell->m_BBox), GetRectHeight(pCell->m_BBox) / 4)) { |
| if(GetRectEnd(rect) - GetRectEnd(pCell->m_BBox) > 0) { |
| bMerge = TRUE; |
| bEnforce = TRUE; |
| } else if(GetRectEnd(rect) - GetRectEnd(pCell->m_BBox) <= 0 && |
| GetRectEnd(rect) - GetRectEnd(pCell->m_BBox) > GetRectHeight(pCell->m_BBox) * -3) { |
| if(pCurObj->m_Type == PDFPAGE_TEXT) { |
| CPDF_TextObject* pText = (CPDF_TextObject*)pCurObj; |
| CPDF_TextObjectItem item; |
| pText->GetItemInfo(0, &item); |
| CFX_WideString str = pText->GetFont()->UnicodeFromCharCode(item.m_CharCode); |
| FX_WCHAR unicode = str.GetAt(0); |
| if(unicode > 96 && unicode < 123) { |
| bMerge = TRUE; |
| } |
| } |
| } |
| } |
| } else { |
| bMerge = TRUE; |
| } |
| } |
| } else { |
| m_WritingMode = WritingMode; |
| bEnforce = FALSE; |
| } |
| if(bMerge) { |
| if(GetRectEnd(plastCell->m_BBox) - GetRectEnd(pCell->m_BBox) > 30) { |
| bEnforce = TRUE; |
| } |
| FX_POSITION pos = pCell->m_ObjList.GetHeadPosition(); |
| while(pos) { |
| plastCell->m_ObjList.AddTail(pCell->m_ObjList.GetNext(pos)); |
| } |
| plastCell->m_BBox.Union(pCell->m_BBox); |
| pCell->m_ObjList.RemoveAll(); |
| delete pCell; |
| cellArray.RemoveAt(i); |
| i--; |
| count--; |
| } else { |
| plastCell = pCell; |
| } |
| } |
| } |
| void CPDF_AutoReflowLayoutProvider::ProcessObj(CFX_PtrArray& cellArray, CPDF_PageObject* pObj, CFX_AffineMatrix matrix) |
| { |
| } |
| FX_INT32 CPDF_AutoReflowLayoutProvider::LogicPreObj(CPDF_PageObject* pObj) |
| { |
| CPDF_PageObject* pPreObj = m_pPreObj; |
| m_pPreObj = pObj; |
| if(!pPreObj) { |
| return 0; |
| } |
| if(pPreObj->m_Type != pObj->m_Type) { |
| return 0; |
| } |
| CFX_FloatRect rcCurObj(pObj->m_Left, pObj->m_Bottom, pObj->m_Right, pObj->m_Top); |
| CFX_FloatRect rcPreObj(pPreObj->m_Left, pPreObj->m_Bottom, pPreObj->m_Right, pPreObj->m_Top); |
| if(pObj->m_Type == PDFPAGE_IMAGE) { |
| if(rcPreObj.Contains(rcCurObj)) { |
| return 2; |
| } |
| if(rcCurObj.Contains(rcPreObj)) { |
| return 2; |
| } |
| return 0; |
| } |
| if(pObj->m_Type == PDFPAGE_TEXT) { |
| if(!((rcPreObj.bottom > rcCurObj.top) || (rcPreObj.top < rcCurObj.bottom))) { |
| FX_FLOAT height = FX_MIN(rcPreObj.Height(), rcCurObj.Height()); |
| if((rcCurObj.left - rcPreObj.right) > height / 3) { |
| return 3; |
| } |
| } |
| if(FXSYS_fabs(rcPreObj.Width() - rcCurObj.Width()) >= 2 || FXSYS_fabs(rcPreObj.Height() - rcCurObj.Height()) >= 2 ) { |
| return 0; |
| } |
| CPDF_TextObject* pPreTextObj = (CPDF_TextObject*)pPreObj; |
| CPDF_TextObject* pCurTextObj = (CPDF_TextObject*)pObj; |
| int nPreCount = pPreTextObj->CountItems(); |
| int nCurCount = pCurTextObj->CountItems(); |
| if (nPreCount != nCurCount) { |
| return 0; |
| } |
| FX_BOOL bSame = TRUE; |
| for (int i = 0; i < nPreCount; i++) { |
| CPDF_TextObjectItem itemPer, itemCur; |
| pPreTextObj->GetItemInfo(i, &itemPer); |
| pCurTextObj->GetItemInfo(i, &itemCur); |
| if (itemCur.m_CharCode != itemPer.m_CharCode) { |
| return 0; |
| } |
| if (itemCur.m_OriginX != itemPer.m_OriginX) { |
| bSame = FALSE; |
| } |
| if (itemCur.m_OriginY != itemPer.m_OriginY) { |
| bSame = FALSE; |
| } |
| } |
| if(rcPreObj.left == rcCurObj.left && rcPreObj.top == rcCurObj.top) { |
| return 1; |
| } |
| if(FXSYS_fabs(rcPreObj.left - rcCurObj.left) < rcPreObj.Width() / 3 |
| && FXSYS_fabs(rcPreObj.top - rcCurObj.top) < rcPreObj.Height() / 3) { |
| return 2; |
| } |
| } |
| return 0; |
| } |
| void CPDF_AutoReflowLayoutProvider::GenerateLine(CFX_PtrArray& cellArray) |
| { |
| CRF_CELL* pCell = NULL; |
| CFX_AffineMatrix matrix; |
| FX_POSITION pos = m_pPDFPage->GetFirstObjectPosition(); |
| if(!pos) { |
| return; |
| } |
| FX_FLOAT PDFWidth = m_pPDFPage->GetPageWidth(); |
| FX_FLOAT PDFHeight = m_pPDFPage->GetPageHeight(); |
| m_pPDFPage->GetDisplayMatrix(m_PDFDisplayMatrix, 0, 0, (int)PDFWidth, (int)PDFHeight, 0); |
| CPDF_PageObject* pPerObj = NULL; |
| int a = 0; |
| CFX_FloatRect pageBBox = m_pPDFPage->m_BBox; |
| FX_FLOAT PrevX = 0 , PrevY = 0, PosX, PosY; |
| while(pos) { |
| CPDF_PageObject* pObj = m_pPDFPage->GetNextObject(pos); |
| if(!pObj || pObj->m_Type == PDFPAGE_PATH) { |
| continue; |
| } |
| int logic = LogicPreObj(pObj); |
| if(logic == 2) { |
| if(pCell) { |
| pCell->m_ObjList.SetAt(pCell->m_ObjList.GetTailPosition(), pObj); |
| } |
| continue; |
| } |
| if (pObj->m_Type == PDFPAGE_TEXT) { |
| CPDF_TextObject* pTextObj = (CPDF_TextObject*)pObj; |
| int textmode = pTextObj->m_TextState.GetObject()->m_TextMode; |
| if(m_Style.m_bIgnoreInvisibleText && pTextObj->m_TextState.GetObject()->m_TextMode == 3) { |
| continue; |
| } |
| PosX = pTextObj->GetPosX(); |
| PosY = pTextObj->GetPosY(); |
| m_PDFDisplayMatrix.Transform(PosX, PosY); |
| } else { |
| PosX = 0; |
| PosY = 0; |
| } |
| FX_BOOL bNewLine = TRUE; |
| FX_RECT ObjBBox = pObj->GetBBox(&m_PDFDisplayMatrix); |
| if(ObjBBox.left > PDFWidth || ObjBBox.right < 0 || |
| ObjBBox.bottom < 0 || ObjBBox.top > PDFHeight) { |
| continue; |
| } |
| if(ObjBBox.IsEmpty()) { |
| continue; |
| } |
| a++; |
| if(!pCell) { |
| bNewLine = TRUE; |
| m_WritingMode = GetWritingMode(NULL, pObj); |
| } else { |
| int WritingMode = GetWritingMode(pPerObj, pObj); |
| if(m_WritingMode == WritingMode || m_WritingMode == WritingMode_UNKNOW || WritingMode == WritingMode_UNKNOW) { |
| if(WritingMode != WritingMode_UNKNOW) { |
| m_WritingMode = WritingMode; |
| } |
| if(m_WritingMode == WritingMode_TBRL) { |
| if(!(GetRectBottom(ObjBBox) > GetRectTop(pCell->m_BBox) || |
| GetRectTop(ObjBBox) < GetRectBottom(pCell->m_BBox))) { |
| bNewLine = FALSE; |
| } |
| } else { |
| if(!(GetRectBottom(ObjBBox) < GetRectTop(pCell->m_BBox) || |
| GetRectTop(ObjBBox) > GetRectBottom(pCell->m_BBox))) { |
| bNewLine = FALSE; |
| } |
| if (pObj->m_Type == PDFPAGE_TEXT) { |
| if(FXSYS_fabs(PrevY - PosY) < 1 ) { |
| bNewLine = FALSE; |
| } |
| } |
| } |
| } else { |
| m_WritingMode = WritingMode; |
| } |
| } |
| pPerObj = pObj; |
| if(bNewLine) { |
| int c = pCell ? pCell->m_ObjList.GetCount() : 0; |
| pCell = FX_NEW CRF_CELL; |
| pCell->m_CellWritingMode = m_WritingMode; |
| pCell->m_BBox = ObjBBox; |
| if(pObj->m_Type == PDFPAGE_TEXT) { |
| FX_FLOAT x = ((CPDF_TextObject*)pObj)->GetPosX(), y = ((CPDF_TextObject*)pObj)->GetPosY(); |
| m_PDFDisplayMatrix.Transform(x, y); |
| if(x < ObjBBox.left) { |
| pCell->m_BBox.left = (int)x; |
| } |
| } |
| pCell->m_ObjList.AddTail(pObj); |
| cellArray.Add(pCell); |
| } else { |
| pCell->m_ObjList.AddTail(pObj); |
| pCell->m_BBox.Union(ObjBBox); |
| } |
| PrevX = PosX; |
| PrevY = PosY; |
| } |
| } |
| FX_FLOAT CPDF_AutoReflowLayoutProvider::GetLayoutOrderHeight(CPDF_PageObject* pCurObj) |
| { |
| CFX_FloatRect rcCurObj(pCurObj->m_Left, pCurObj->m_Bottom, pCurObj->m_Right, pCurObj->m_Top); |
| if (m_WritingMode == WritingMode_TBRL) { |
| return rcCurObj.Width(); |
| } |
| return rcCurObj.Height(); |
| } |
| FX_FLOAT CPDF_AutoReflowLayoutProvider::GetLayoutOrderWidth(CPDF_PageObject* pCurObj) |
| { |
| CFX_FloatRect rcCurObj(pCurObj->m_Left, pCurObj->m_Bottom, pCurObj->m_Right, pCurObj->m_Top); |
| if (m_WritingMode == WritingMode_TBRL) { |
| return rcCurObj.Height(); |
| } |
| return rcCurObj.Width(); |
| } |
| int CPDF_AutoReflowLayoutProvider:: GetRectWidth(FX_RECT rect) |
| { |
| if(m_WritingMode == WritingMode_TBRL) { |
| return rect.Height(); |
| } |
| return rect.Width(); |
| } |
| int CPDF_AutoReflowLayoutProvider:: GetRectHeight(FX_RECT rect) |
| { |
| if(m_WritingMode == WritingMode_TBRL) { |
| return rect.Width(); |
| } |
| return rect.Height(); |
| } |
| int CPDF_AutoReflowLayoutProvider:: GetRectStart(FX_RECT rect) |
| { |
| if(m_WritingMode == WritingMode_TBRL) { |
| return rect.top; |
| } |
| return rect.left; |
| } |
| int CPDF_AutoReflowLayoutProvider:: GetRectEnd(FX_RECT rect) |
| { |
| if(m_WritingMode == WritingMode_TBRL) { |
| return rect.bottom; |
| } |
| return rect.right; |
| } |
| int CPDF_AutoReflowLayoutProvider:: GetRectTop(FX_RECT rect) |
| { |
| if(m_WritingMode == WritingMode_TBRL) { |
| return rect.right; |
| } |
| return rect.top; |
| } |
| int CPDF_AutoReflowLayoutProvider:: GetRectBottom(FX_RECT rect) |
| { |
| if(m_WritingMode == WritingMode_TBRL) { |
| return rect.left; |
| } |
| return rect.bottom; |
| } |
| int CPDF_AutoReflowLayoutProvider::GetWritingMode(CPDF_PageObject* pPreObj, CPDF_PageObject* pCurObj) |
| { |
| CFX_FloatRect rcCurObj(pCurObj->m_Left, pCurObj->m_Bottom, pCurObj->m_Right, pCurObj->m_Top); |
| if(pCurObj->m_Type == PDFPAGE_TEXT) { |
| CPDF_TextObject* ptextObj = (CPDF_TextObject* )pCurObj; |
| int count = ptextObj->CountItems(); |
| if(count > 1) { |
| CPDF_TextObjectItem Item1, Item2; |
| ptextObj->GetItemInfo(0, &Item1); |
| ptextObj->GetItemInfo(count - 1, &Item2); |
| if(Item2.m_CharCode == -1 && count > 2) { |
| ptextObj->GetItemInfo(2, &Item2); |
| } |
| CFX_AffineMatrix textMatrix; |
| ptextObj->GetTextMatrix(&textMatrix); |
| textMatrix.Transform(Item1.m_OriginX, Item1.m_OriginY); |
| textMatrix.Transform(Item2.m_OriginX, Item2.m_OriginY); |
| FX_FLOAT dx = FXSYS_fabs(Item1.m_OriginX - Item2.m_OriginX); |
| FX_FLOAT dy = FXSYS_fabs(Item1.m_OriginY - Item2.m_OriginY); |
| return dx >= dy ? WritingMode_LRTB : WritingMode_TBRL; |
| } else { |
| if(m_WritingMode != WritingMode_UNKNOW) { |
| return m_WritingMode; |
| } |
| } |
| } |
| if(pPreObj) { |
| FX_FLOAT threshold = rcCurObj.Width() / 4; |
| if(m_WritingMode == WritingMode_LRTB) { |
| if(FXSYS_fabs(pPreObj->m_Bottom - pCurObj->m_Bottom) < threshold * 2 |
| && FXSYS_fabs(pPreObj->m_Top - pCurObj->m_Top) < threshold * 2) { |
| return m_WritingMode; |
| } |
| FX_FLOAT mid = (pCurObj->m_Bottom + pCurObj->m_Top) / 2; |
| if(mid > pPreObj->m_Bottom && mid < pPreObj->m_Top && pCurObj->m_Right > pPreObj->m_Right) { |
| return m_WritingMode; |
| } |
| } else if(m_WritingMode == WritingMode_TBRL) { |
| if(FXSYS_fabs(pPreObj->m_Left - pCurObj->m_Left) < threshold * 2 |
| && FXSYS_fabs(pPreObj->m_Right - pCurObj->m_Right) < threshold * 2) { |
| return m_WritingMode; |
| } |
| FX_FLOAT mid = (pCurObj->m_Right + pCurObj->m_Left) / 2; |
| if(mid > pPreObj->m_Left && mid < pPreObj->m_Right && pCurObj->m_Bottom < pPreObj->m_Bottom) { |
| return m_WritingMode; |
| } |
| } |
| if(FXSYS_fabs(pPreObj->m_Left - pCurObj->m_Left) < threshold && |
| FXSYS_fabs(pPreObj->m_Bottom - pCurObj->m_Bottom) > threshold * 2) { |
| return WritingMode_TBRL; |
| } |
| if(FXSYS_fabs(pPreObj->m_Left - pCurObj->m_Left) > threshold && |
| FXSYS_fabs(pPreObj->m_Bottom - pCurObj->m_Bottom) < threshold * 2) { |
| return WritingMode_LRTB; |
| } |
| int count = 0; |
| if(pPreObj->m_Type == PDFPAGE_TEXT) { |
| CPDF_TextObject* ptextObj = (CPDF_TextObject* )pCurObj; |
| count = ptextObj->CountItems(); |
| } |
| if(pPreObj->m_Type != PDFPAGE_TEXT || count == 1) { |
| if(pCurObj->m_Left > pPreObj->m_Right) { |
| FX_FLOAT mid = (pCurObj->m_Top + pCurObj->m_Bottom) / 2; |
| if(mid < pPreObj->m_Top && mid > pPreObj->m_Bottom) { |
| return WritingMode_LRTB; |
| } |
| } |
| if(pCurObj->m_Top < pPreObj->m_Bottom) { |
| FX_FLOAT mid = (pCurObj->m_Left + pCurObj->m_Right) / 2; |
| if(mid < pPreObj->m_Right && mid > pPreObj->m_Left) { |
| return WritingMode_TBRL; |
| } |
| } |
| } |
| } |
| return WritingMode_UNKNOW; |
| } |
| LayoutStatus CPDF_AutoReflowLayoutProvider::StartLoad(IFX_Pause* pPause) |
| { |
| m_pPause = pPause; |
| m_pRoot = FX_NEW CPDF_AutoReflowElement(LayoutDocument); |
| if(!m_pRoot) { |
| return LayoutError; |
| } |
| m_Step = 0; |
| return Continue(); |
| } |
| LayoutStatus CPDF_AutoReflowLayoutProvider::Continue() |
| { |
| GenerateStructTree(); |
| return m_Status; |
| } |
| int CPDF_AutoReflowLayoutProvider::GetPosition() |
| { |
| if(m_Step == 0) { |
| return 0; |
| } else { |
| return m_Step * 100 / AUTOREFLOW_STEP_REMOVEDATA; |
| } |
| } |
| FX_FLOAT CPDF_AutoReflowLayoutProvider::GetObjMinCell(CPDF_PageObject* pObj) |
| { |
| if(!pObj) { |
| return 0; |
| } |
| if(pObj->m_Type != PDFPAGE_TEXT) { |
| CFX_AffineMatrix matrix; |
| FX_RECT rect = pObj->GetBBox(&matrix); |
| return (FX_FLOAT)(rect.Width()); |
| } |
| CPDF_TextObject* pTextObj = (CPDF_TextObject* )pObj; |
| int count = pTextObj->CountItems(); |
| for(int i = 0; i < count; i++) { |
| CPDF_TextObjectItem Item; |
| pTextObj->GetItemInfo(i, &Item); |
| if(Item.m_CharCode == -1) { |
| continue; |
| } |
| if((Item.m_CharCode > 47 && Item.m_CharCode < 58) || (Item.m_CharCode > 64 && Item.m_CharCode < 91) |
| || (Item.m_CharCode > 96 && Item.m_CharCode < 123)) { |
| continue; |
| } |
| if(Item.m_CharCode > 127 || (Item.m_CharCode > 32 && Item.m_CharCode < 35) || Item.m_CharCode == 37 || |
| (Item.m_CharCode > 38 && Item.m_CharCode < 42) || Item.m_CharCode == 44 || Item.m_CharCode == 46 || |
| Item.m_CharCode == 58 || Item.m_CharCode == 59 || Item.m_CharCode == 63 || Item.m_CharCode == 93) { |
| if(i == count - 1) { |
| CFX_AffineMatrix matrix; |
| FX_RECT rect = pObj->GetBBox(&matrix); |
| return (FX_FLOAT)(rect.Width()); |
| } else { |
| pTextObj->GetItemInfo(i + 1, &Item); |
| return Item.m_OriginX; |
| } |
| } |
| return Item.m_OriginX; |
| } |
| CFX_AffineMatrix matrix; |
| FX_RECT rect = pObj->GetBBox(&matrix); |
| return (FX_FLOAT)(rect.Width()); |
| } |
