C++ CPDF_Stream::SetData方法代码示例

void CPDFSDK_BAAnnot::WriteAppearance(const CFX_ByteString& sAPType,
                                      const CPDF_Rect& rcBBox,
                                      const CFX_Matrix& matrix,
                                      const CFX_ByteString& sContents,
                                      const CFX_ByteString& sAPState) {
  CPDF_Dictionary* pAPDict = m_pAnnot->GetAnnotDict()->GetDictBy("AP");

  if (!pAPDict) {
    pAPDict = new CPDF_Dictionary;
    m_pAnnot->GetAnnotDict()->SetAt("AP", pAPDict);
  }

  CPDF_Stream* pStream = nullptr;
  CPDF_Dictionary* pParentDict = nullptr;

  if (sAPState.IsEmpty()) {
    pParentDict = pAPDict;
    pStream = pAPDict->GetStreamBy(sAPType);
  } else {
    CPDF_Dictionary* pAPTypeDict = pAPDict->GetDictBy(sAPType);
    if (!pAPTypeDict) {
      pAPTypeDict = new CPDF_Dictionary;
      pAPDict->SetAt(sAPType, pAPTypeDict);
    }

    pParentDict = pAPTypeDict;
    pStream = pAPTypeDict->GetStreamBy(sAPState);
  }

  if (!pStream) {
    pStream = new CPDF_Stream(nullptr, 0, nullptr);

    CPDF_Document* pDoc = m_pPageView->GetPDFDocument();
    int32_t objnum = pDoc->AddIndirectObject(pStream);
    pParentDict->SetAtReference(sAPType, pDoc, objnum);
  }

  CPDF_Dictionary* pStreamDict = pStream->GetDict();
  if (!pStreamDict) {
    pStreamDict = new CPDF_Dictionary;
    pStreamDict->SetAtName("Type", "XObject");
    pStreamDict->SetAtName("Subtype", "Form");
    pStreamDict->SetAtInteger("FormType", 1);
    pStream->InitStream(nullptr, 0, pStreamDict);
  }

  if (pStreamDict) {
    pStreamDict->SetAtMatrix("Matrix", matrix);
    pStreamDict->SetAtRect("BBox", rcBBox);
  }

  pStream->SetData((uint8_t*)sContents.c_str(), sContents.GetLength(), FALSE,
                   FALSE);
}

void CPDF_PageContentGenerate::GenerateContent() {
    CFX_ByteTextBuf buf;
    CPDF_Dictionary* pPageDict = m_pPage->m_pFormDict;
    for (int i = 0; i < m_pageObjects.GetSize(); ++i) {
        CPDF_PageObject* pPageObj = (CPDF_PageObject*)m_pageObjects[i];
        if (!pPageObj || pPageObj->m_Type != PDFPAGE_IMAGE) {
            continue;
        }
        ProcessImage(buf, (CPDF_ImageObject*)pPageObj);
    }
    CPDF_Object* pContent =
        pPageDict ? pPageDict->GetElementValue("Contents") : NULL;
    if (pContent != NULL) {
        pPageDict->RemoveAt("Contents");
    }
    CPDF_Stream* pStream = new CPDF_Stream(NULL, 0, NULL);
    pStream->SetData(buf.GetBuffer(), buf.GetLength(), FALSE, FALSE);
    m_pDocument->AddIndirectObject(pStream);
    pPageDict->SetAtReference("Contents", m_pDocument, pStream->GetObjNum());
}

void CPDF_PageContentGenerator::GenerateContent() {
  CFX_ByteTextBuf buf;
  CPDF_Dictionary* pPageDict = m_pPage->m_pFormDict;
  for (int i = 0; i < m_pageObjects.GetSize(); ++i) {
    CPDF_PageObject* pPageObj = m_pageObjects[i];
    if (!pPageObj || !pPageObj->IsImage()) {
      continue;
    }
    ProcessImage(buf, pPageObj->AsImage());
  }
  CPDF_Object* pContent =
      pPageDict ? pPageDict->GetDirectObjectFor("Contents") : nullptr;
  if (pContent)
    pPageDict->RemoveFor("Contents");

  CPDF_Stream* pStream = new CPDF_Stream;
  pStream->SetData(buf.GetBuffer(), buf.GetLength());
  pPageDict->SetReferenceFor("Contents", m_pDocument,
                             m_pDocument->AddIndirectObject(pStream));
}

FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFPage_TransFormWithClip(FPDF_PAGE page,
                           const FS_MATRIX* matrix,
                           const FS_RECTF* clipRect) {
  if (!matrix && !clipRect)
    return false;

  CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
  if (!pPage)
    return false;

  std::ostringstream textBuf;
  textBuf << "q ";

  if (clipRect) {
    CFX_FloatRect rect = CFXFloatRectFromFSRECTF(*clipRect);
    rect.Normalize();

    textBuf << ByteString::Format("%f %f %f %f re W* n ", rect.left,
                                  rect.bottom, rect.Width(), rect.Height());
  }
  if (matrix) {
    textBuf << ByteString::Format("%f %f %f %f %f %f cm ", matrix->a, matrix->b,
                                  matrix->c, matrix->d, matrix->e, matrix->f);
  }

  CPDF_Dictionary* pPageDict = pPage->GetDict();
  CPDF_Object* pContentObj = GetPageContent(pPageDict);
  if (!pContentObj)
    return false;

  CPDF_Document* pDoc = pPage->GetDocument();
  if (!pDoc)
    return false;

  CPDF_Stream* pStream =
      pDoc->NewIndirect<CPDF_Stream>(nullptr, 0, pDoc->New<CPDF_Dictionary>());
  pStream->SetDataFromStringstream(&textBuf);

  CPDF_Stream* pEndStream =
      pDoc->NewIndirect<CPDF_Stream>(nullptr, 0, pDoc->New<CPDF_Dictionary>());
  pEndStream->SetData(ByteStringView(" Q").span());

  if (CPDF_Array* pContentArray = ToArray(pContentObj)) {
    pContentArray->InsertAt(0, pStream->MakeReference(pDoc));
    pContentArray->Add(pEndStream->MakeReference(pDoc));
  } else if (pContentObj->IsStream() && !pContentObj->IsInline()) {
    pContentArray = pDoc->NewIndirect<CPDF_Array>();
    pContentArray->Add(pStream->MakeReference(pDoc));
    pContentArray->Add(pContentObj->MakeReference(pDoc));
    pContentArray->Add(pEndStream->MakeReference(pDoc));
    pPageDict->SetFor(pdfium::page_object::kContents,
                      pContentArray->MakeReference(pDoc));
  }

  // Need to transform the patterns as well.
  CPDF_Dictionary* pRes =
      pPageDict->GetDictFor(pdfium::page_object::kResources);
  if (!pRes)
    return true;

  CPDF_Dictionary* pPatternDict = pRes->GetDictFor("Pattern");
  if (!pPatternDict)
    return true;

  CPDF_DictionaryLocker locker(pPatternDict);
  for (const auto& it : locker) {
    CPDF_Object* pObj = it.second.get();
    if (pObj->IsReference())
      pObj = pObj->GetDirect();

    CPDF_Dictionary* pDict = nullptr;
    if (pObj->IsDictionary())
      pDict = pObj->AsDictionary();
    else if (CPDF_Stream* pObjStream = pObj->AsStream())
      pDict = pObjStream->GetDict();
    else
      continue;

    if (matrix) {
      CFX_Matrix m = CFXMatrixFromFSMatrix(*matrix);
      pDict->SetMatrixFor("Matrix", pDict->GetMatrixFor("Matrix") * m);
    }
  }

  return true;
}

DLLEXPORT FPDF_BOOL STDCALL FPDFPage_TransFormWithClip(FPDF_PAGE page,
                                                       FS_MATRIX* matrix,
                                                       FS_RECTF* clipRect) {
  CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
  if (!pPage)
    return FALSE;

  CFX_ByteTextBuf textBuf;
  textBuf << "q ";
  CFX_FloatRect rect(clipRect->left, clipRect->bottom, clipRect->right,
                     clipRect->top);
  rect.Normalize();
  CFX_ByteString bsClipping;
  bsClipping.Format("%f %f %f %f re W* n ", rect.left, rect.bottom,
                    rect.Width(), rect.Height());
  textBuf << bsClipping;

  CFX_ByteString bsMatix;
  bsMatix.Format("%f %f %f %f %f %f cm ", matrix->a, matrix->b, matrix->c,
                 matrix->d, matrix->e, matrix->f);
  textBuf << bsMatix;

  CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
  CPDF_Object* pContentObj =
      pPageDic ? pPageDic->GetElement("Contents") : nullptr;
  if (!pContentObj)
    pContentObj = pPageDic ? pPageDic->GetArrayBy("Contents") : nullptr;
  if (!pContentObj)
    return FALSE;

  CPDF_Dictionary* pDic = new CPDF_Dictionary;
  CPDF_Stream* pStream = new CPDF_Stream(nullptr, 0, pDic);
  pStream->SetData(textBuf.GetBuffer(), textBuf.GetSize(), FALSE, FALSE);
  CPDF_Document* pDoc = pPage->m_pDocument;
  if (!pDoc)
    return FALSE;
  pDoc->AddIndirectObject(pStream);

  pDic = new CPDF_Dictionary;
  CPDF_Stream* pEndStream = new CPDF_Stream(nullptr, 0, pDic);
  pEndStream->SetData((const uint8_t*)" Q", 2, FALSE, FALSE);
  pDoc->AddIndirectObject(pEndStream);

  CPDF_Array* pContentArray = nullptr;
  if (CPDF_Array* pArray = ToArray(pContentObj)) {
    pContentArray = pArray;
    CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
    pContentArray->InsertAt(0, pRef);
    pContentArray->AddReference(pDoc, pEndStream);
  } else if (CPDF_Reference* pReference = ToReference(pContentObj)) {
    CPDF_Object* pDirectObj = pReference->GetDirect();
    if (pDirectObj) {
      if (CPDF_Array* pArray = pDirectObj->AsArray()) {
        pContentArray = pArray;
        CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
        pContentArray->InsertAt(0, pRef);
        pContentArray->AddReference(pDoc, pEndStream);
      } else if (pDirectObj->IsStream()) {
        pContentArray = new CPDF_Array();
        pContentArray->AddReference(pDoc, pStream->GetObjNum());
        pContentArray->AddReference(pDoc, pDirectObj->GetObjNum());
        pContentArray->AddReference(pDoc, pEndStream);
        pPageDic->SetAtReference("Contents", pDoc,
                                 pDoc->AddIndirectObject(pContentArray));
      }
    }
  }

  // Need to transform the patterns as well.
  CPDF_Dictionary* pRes = pPageDic->GetDictBy("Resources");
  if (pRes) {
    CPDF_Dictionary* pPattenDict = pRes->GetDictBy("Pattern");
    if (pPattenDict) {
      for (const auto& it : *pPattenDict) {
        CPDF_Object* pObj = it.second;
        if (pObj->IsReference())
          pObj = pObj->GetDirect();

        CPDF_Dictionary* pDict = nullptr;
        if (pObj->IsDictionary())
          pDict = pObj->AsDictionary();
        else if (CPDF_Stream* pStream = pObj->AsStream())
          pDict = pStream->GetDict();
        else
          continue;

        CFX_Matrix m = pDict->GetMatrixBy("Matrix");
        CFX_Matrix t = *(CFX_Matrix*)matrix;
        m.Concat(t);
        pDict->SetAtMatrix("Matrix", m);
      }
    }
  }

  return TRUE;
}

DLLEXPORT void STDCALL FPDFPage_InsertClipPath(FPDF_PAGE page,
                                               FPDF_CLIPPATH clipPath) {
  CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
  if (!pPage)
    return;

  CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
  CPDF_Object* pContentObj =
      pPageDic ? pPageDic->GetElement("Contents") : nullptr;
  if (!pContentObj)
    pContentObj = pPageDic ? pPageDic->GetArrayBy("Contents") : nullptr;
  if (!pContentObj)
    return;

  CFX_ByteTextBuf strClip;
  CPDF_ClipPath* pClipPath = (CPDF_ClipPath*)clipPath;
  FX_DWORD i;
  for (i = 0; i < pClipPath->GetPathCount(); i++) {
    CPDF_Path path = pClipPath->GetPath(i);
    int iClipType = pClipPath->GetClipType(i);
    if (path.GetPointCount() == 0) {
      // Empty clipping (totally clipped out)
      strClip << "0 0 m W n ";
    } else {
      OutputPath(strClip, path);
      if (iClipType == FXFILL_WINDING)
        strClip << "W n\n";
      else
        strClip << "W* n\n";
    }
  }
  CPDF_Dictionary* pDic = new CPDF_Dictionary;
  CPDF_Stream* pStream = new CPDF_Stream(nullptr, 0, pDic);
  pStream->SetData(strClip.GetBuffer(), strClip.GetSize(), FALSE, FALSE);
  CPDF_Document* pDoc = pPage->m_pDocument;
  if (!pDoc)
    return;
  pDoc->AddIndirectObject(pStream);

  CPDF_Array* pContentArray = nullptr;
  if (CPDF_Array* pArray = ToArray(pContentObj)) {
    pContentArray = pArray;
    CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
    pContentArray->InsertAt(0, pRef);
  } else if (CPDF_Reference* pReference = ToReference(pContentObj)) {
    CPDF_Object* pDirectObj = pReference->GetDirect();
    if (pDirectObj) {
      if (CPDF_Array* pArray = pDirectObj->AsArray()) {
        pContentArray = pArray;
        CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
        pContentArray->InsertAt(0, pRef);
      } else if (pDirectObj->IsStream()) {
        pContentArray = new CPDF_Array();
        pContentArray->AddReference(pDoc, pStream->GetObjNum());
        pContentArray->AddReference(pDoc, pDirectObj->GetObjNum());
        pPageDic->SetAtReference("Contents", pDoc,
                                 pDoc->AddIndirectObject(pContentArray));
      }
    }
  }
}

DLLEXPORT FPDF_BOOL STDCALL FPDFPage_TransFormWithClip(FPDF_PAGE page, FS_MATRIX* matrix, FS_RECTF* clipRect)
{
	if(!page)
		return FALSE;

	CFX_ByteTextBuf textBuf;
	textBuf<<"q ";
	CFX_FloatRect rect(clipRect->left, clipRect->bottom, clipRect->right, clipRect->top);
	rect.Normalize();
	CFX_ByteString bsClipping;
	bsClipping.Format("%f %f %f %f re W* n ", rect.left, rect.bottom, rect.Width(), rect.Height());
	textBuf<<bsClipping;

	CFX_ByteString bsMatix;
	bsMatix.Format("%f %f %f %f %f %f cm ", matrix->a, matrix->b,matrix->c,matrix->d,matrix->e,matrix->f);
	textBuf<<bsMatix;
	

	CPDF_Page* pPage = (CPDF_Page*)page;
	CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
	CPDF_Object* pContentObj = pPageDic->GetElement("Contents");
	if(!pContentObj)
		pContentObj = pPageDic->GetArray("Contents");
	if(!pContentObj)
		return FALSE;
	
	CPDF_Dictionary* pDic = FX_NEW CPDF_Dictionary;
	CPDF_Stream* pStream = FX_NEW CPDF_Stream(NULL,0, pDic);
	pStream->SetData(textBuf.GetBuffer(), textBuf.GetSize(), FALSE, FALSE);
	CPDF_Document* pDoc = pPage->m_pDocument;
	if(!pDoc)
		return FALSE;
	pDoc->AddIndirectObject(pStream);

	pDic = FX_NEW CPDF_Dictionary;
	CPDF_Stream* pEndStream = FX_NEW CPDF_Stream(NULL,0, pDic);
	pEndStream->SetData((FX_LPCBYTE)" Q", 2, FALSE, FALSE);
	pDoc->AddIndirectObject(pEndStream);
	
	CPDF_Array* pContentArray = NULL;
	if (pContentObj && pContentObj->GetType() == PDFOBJ_ARRAY)
	{
		pContentArray = (CPDF_Array*)pContentObj;
		CPDF_Reference* pRef = FX_NEW CPDF_Reference(pDoc, pStream->GetObjNum());
		pContentArray->InsertAt(0, pRef);
		pContentArray->AddReference(pDoc,pEndStream);
		
	}
	else if(pContentObj && pContentObj->GetType() == PDFOBJ_REFERENCE)
	{
		CPDF_Reference* pReference = (CPDF_Reference*)pContentObj;
		CPDF_Object* pDirectObj = pReference->GetDirect();
		if(pDirectObj != NULL)
		{
			if(pDirectObj->GetType() == PDFOBJ_ARRAY)
			{
				pContentArray = (CPDF_Array*)pDirectObj;
				CPDF_Reference* pRef = FX_NEW CPDF_Reference(pDoc, pStream->GetObjNum());
				pContentArray->InsertAt(0, pRef);
				pContentArray->AddReference(pDoc,pEndStream);
				
			}
			else if(pDirectObj->GetType() == PDFOBJ_STREAM)
			{
				pContentArray = FX_NEW CPDF_Array();
				pContentArray->AddReference(pDoc,pStream->GetObjNum());
				pContentArray->AddReference(pDoc,pDirectObj->GetObjNum());
				pContentArray->AddReference(pDoc, pEndStream);
				pPageDic->SetAtReference("Contents", pDoc, pDoc->AddIndirectObject(pContentArray));
			}
		}
	}	

	//Need to transform the patterns as well.
	CPDF_Dictionary* pRes = pPageDic->GetDict(FX_BSTRC("Resources"));
	if(pRes)
	{
		CPDF_Dictionary* pPattenDict = pRes->GetDict(FX_BSTRC("Pattern"));
		if(pPattenDict)
		{
			FX_POSITION pos = pPattenDict->GetStartPos();
			while(pos)
			{
				CPDF_Dictionary* pDict = NULL;
				CFX_ByteString key;
				CPDF_Object* pObj = pPattenDict->GetNextElement(pos, key);
				if(pObj->GetType() == PDFOBJ_REFERENCE)
					pObj = pObj->GetDirect();
				if(pObj->GetType() == PDFOBJ_DICTIONARY)
				{
					pDict = (CPDF_Dictionary*)pObj;
				}
				else if(pObj->GetType() == PDFOBJ_STREAM)
				{
					pDict = ((CPDF_Stream*)pObj)->GetDict();
				}
				else
					continue;
				
				CFX_AffineMatrix m = pDict->GetMatrix(FX_BSTRC("Matrix"));
//.........这里部分代码省略.........

DLLEXPORT void STDCALL FPDFPage_InsertClipPath(FPDF_PAGE page,FPDF_CLIPPATH clipPath)
{
	if(!page)
		return;
	CPDF_Page* pPage = (CPDF_Page*)page;
	CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
	CPDF_Object* pContentObj = pPageDic->GetElement("Contents");
	if(!pContentObj)
		pContentObj = pPageDic->GetArray("Contents");
	if(!pContentObj)
		return;

	CFX_ByteTextBuf strClip;
	CPDF_ClipPath* pClipPath = (CPDF_ClipPath*)clipPath;
	FX_DWORD i;
	for (i = 0; i < pClipPath->GetPathCount(); i ++) {
		CPDF_Path path = pClipPath->GetPath(i);
		int iClipType = pClipPath->GetClipType(i);
		if (path.GetPointCount() == 0) {
			// Empty clipping (totally clipped out)
			strClip << "0 0 m W n ";
		} else {
			OutputPath(strClip, path);
			if (iClipType == FXFILL_WINDING)
				strClip << "W n\n";
			else
				strClip << "W* n\n";
		}
	}
	CPDF_Dictionary* pDic = FX_NEW CPDF_Dictionary;
	CPDF_Stream* pStream = FX_NEW CPDF_Stream(NULL,0, pDic);
	pStream->SetData(strClip.GetBuffer(), strClip.GetSize(), FALSE, FALSE);
	CPDF_Document* pDoc = pPage->m_pDocument;
	if(!pDoc)
		return;
	pDoc->AddIndirectObject(pStream);
	
	CPDF_Array* pContentArray = NULL;
	if (pContentObj && pContentObj->GetType() == PDFOBJ_ARRAY)
	{
		pContentArray = (CPDF_Array*)pContentObj;
		CPDF_Reference* pRef = FX_NEW CPDF_Reference(pDoc, pStream->GetObjNum());
		pContentArray->InsertAt(0, pRef);
		
	}
	else if(pContentObj && pContentObj->GetType() == PDFOBJ_REFERENCE)
	{
		CPDF_Reference* pReference = (CPDF_Reference*)pContentObj;
		CPDF_Object* pDirectObj = pReference->GetDirect();
		if(pDirectObj != NULL)
		{
			if(pDirectObj->GetType() == PDFOBJ_ARRAY)
			{
				pContentArray = (CPDF_Array*)pDirectObj;
				CPDF_Reference* pRef = FX_NEW CPDF_Reference(pDoc, pStream->GetObjNum());
				pContentArray->InsertAt(0, pRef);
				
			}
			else if(pDirectObj->GetType() == PDFOBJ_STREAM)
			{
				pContentArray = FX_NEW CPDF_Array();
				pContentArray->AddReference(pDoc,pStream->GetObjNum());
				pContentArray->AddReference(pDoc,pDirectObj->GetObjNum());
				pPageDic->SetAtReference("Contents", pDoc, pDoc->AddIndirectObject(pContentArray));
			}
		}
	}	
}

void CPDFSDK_Annot::WriteAppearance(const CFX_ByteString& sAPType, const CPDF_Rect& rcBBox, 
								const CPDF_Matrix& matrix, const CFX_ByteString& sContents,
								const CFX_ByteString& sAPState)
{
	ASSERT(m_pAnnot != NULL);
	ASSERT(m_pAnnot->m_pAnnotDict != NULL);
	
	CPDF_Dictionary* pAPDict = m_pAnnot->m_pAnnotDict->GetDict("AP");
	
	if (!pAPDict) 
	{
		pAPDict = FX_NEW CPDF_Dictionary;
		m_pAnnot->m_pAnnotDict->SetAt("AP", pAPDict);
	}
	
	CPDF_Stream* pStream = NULL;
	CPDF_Dictionary* pParentDict = NULL;
	
	if (sAPState.IsEmpty())
	{
		pParentDict = pAPDict;
		pStream = pAPDict->GetStream(sAPType);
	}
	else
	{
		CPDF_Dictionary* pAPTypeDict = pAPDict->GetDict(sAPType);
		if (!pAPTypeDict)
		{
			pAPTypeDict = FX_NEW CPDF_Dictionary;
			pAPDict->SetAt(sAPType, pAPTypeDict);
		}
		
		pParentDict = pAPTypeDict;
		pStream = pAPTypeDict->GetStream(sAPState);
	}
	
	if (!pStream) 
	{
		ASSERT(m_pPageView != NULL);
		CPDF_Document* pDoc = m_pPageView->GetPDFDocument();
		ASSERT(pDoc != NULL);
		
		pStream = FX_NEW CPDF_Stream(NULL, 0, NULL);
		FX_INT32 objnum = pDoc->AddIndirectObject(pStream);
		//pAPDict->SetAtReference(sAPType, pDoc, objnum);
		ASSERT(pParentDict != NULL);
		pParentDict->SetAtReference(sAPType, pDoc, objnum);
	}
	
	CPDF_Dictionary * pStreamDict = pStream->GetDict();
	
	if (!pStreamDict)
	{
		pStreamDict = FX_NEW CPDF_Dictionary;
		pStreamDict->SetAtName("Type", "XObject");
		pStreamDict->SetAtName("Subtype", "Form");
		pStreamDict->SetAtInteger("FormType", 1);
		pStream->InitStream(NULL,0,pStreamDict);
	}
	
	if (pStreamDict)
	{
		pStreamDict->SetAtMatrix("Matrix",matrix);	
		pStreamDict->SetAtRect("BBox", rcBBox);		
	}
	
	pStream->SetData((FX_BYTE*)sContents.c_str(), sContents.GetLength(), FALSE, FALSE);
}

//.........这里部分代码省略.........
		if (!pAnnotAP)continue;

		CPDF_Stream* pAPStream = pAnnotAP->GetStream("N");
		if (!pAPStream)
		{
			CPDF_Dictionary* pAPDic = pAnnotAP->GetDict("N");
			if (!pAPDic)continue;

			if (!sAnnotState.IsEmpty())
			{
				pAPStream = pAPDic->GetStream(sAnnotState);
			}
			else
			{
				FX_POSITION pos = pAPDic->GetStartPos();
				if (pos)
				{
					CFX_ByteString sKey;
					CPDF_Object* pFirstObj = pAPDic->GetNextElement(pos, sKey);
					if (pFirstObj)
					{
						if (pFirstObj->GetType() == PDFOBJ_REFERENCE)
							pFirstObj = pFirstObj->GetDirect();
						
						if (pFirstObj->GetType() != PDFOBJ_STREAM)
							continue;

						pAPStream = (CPDF_Stream*)pFirstObj;
					}
				}
			}
		}

		if (!pAPStream)continue;

		CPDF_Dictionary* pAPDic = pAPStream->GetDict();
		CFX_AffineMatrix matrix = pAPDic->GetMatrix("Matrix");

		CPDF_Rect rcStream;
		if (pAPDic->KeyExist("Rect"))
			rcStream = pAPDic->GetRect("Rect");
		else if (pAPDic->KeyExist("BBox"))
			rcStream = pAPDic->GetRect("BBox");

		if (rcStream.IsEmpty())continue;

		CPDF_Object* pObj = pAPStream;

		if (pObj)
		{		
			CPDF_Dictionary* pObjDic = pObj->GetDict();
			if (pObjDic)
			{
				pObjDic->SetAtName("Type", "XObject");
				pObjDic->SetAtName("Subtype", "Form");
			}
		}

		CPDF_Dictionary* pXObject = pNewXORes->GetDict("XObject");
		if (!pXObject)
		{
			pXObject = FX_NEW CPDF_Dictionary;
			pNewXORes->SetAt("XObject", pXObject);
		}

		CFX_ByteString sFormName;
		sFormName.Format("F%d", i);
		FX_DWORD dwObjNum = pDocument->AddIndirectObject(pObj);
		pXObject->SetAtReference(sFormName, pDocument, dwObjNum);

		CPDF_StreamAcc acc;
		acc.LoadAllData(pNewXObject);

		FX_LPCBYTE pData = acc.GetData();
		CFX_ByteString sStream(pData, acc.GetSize());
		CFX_ByteString sTemp;

		if (matrix.IsIdentity())
		{
			matrix.a = 1.0f;
			matrix.b = 0.0f;
			matrix.c = 0.0f;
			matrix.d = 1.0f;
			matrix.e = 0.0f;
			matrix.f = 0.0f;
		}

		CFX_AffineMatrix m = GetMatrix(rcAnnot, rcStream, matrix);
		sTemp.Format("q %f 0 0 %f %f %f cm /%s Do Q\n", m.a, m.d, m.e, m.f, sFormName.c_str());
		sStream += sTemp;

		pNewXObject->SetData((FX_LPCBYTE)sStream, sStream.GetLength(), FALSE, FALSE);
	}
	pPageDict->RemoveAt( "Annots" );

	ObjectArray.RemoveAll();
	RectArray.RemoveAll();

	return FLATTEN_SUCCESS;
}

void SetPageContents(CFX_ByteString key, CPDF_Dictionary* pPage, CPDF_Document* pDocument)
{
	CPDF_Object* pContentsObj = pPage->GetStream("Contents");
	if (!pContentsObj)
	{
		pContentsObj = pPage->GetArray("Contents");
	}
	
	if (!pContentsObj)
	{
		//Create a new contents dictionary
		if (!key.IsEmpty())
		{
			CPDF_Stream* pNewContents = FX_NEW CPDF_Stream(NULL, 0, FX_NEW CPDF_Dictionary);
			if (!pNewContents)return;
			pPage->SetAtReference("Contents", pDocument, pDocument->AddIndirectObject(pNewContents));
			
			CFX_ByteString sStream;
			sStream.Format("q 1 0 0 1 0 0 cm /%s Do Q", key.c_str());
			pNewContents->SetData((FX_LPCBYTE)sStream, sStream.GetLength(), FALSE, FALSE);
		}
		return;
	}

	int iType = pContentsObj->GetType();
	CPDF_Array* pContentsArray = NULL;
	
	switch(iType)
	{
	case PDFOBJ_STREAM:
		{
			pContentsArray = FX_NEW CPDF_Array;
			CPDF_Stream* pContents = (CPDF_Stream*)pContentsObj;
			FX_DWORD dwObjNum = pDocument->AddIndirectObject(pContents);
			CPDF_StreamAcc acc;
			acc.LoadAllData(pContents);
			CFX_ByteString sStream = "q\n";
			CFX_ByteString sBody = CFX_ByteString((FX_LPCSTR)acc.GetData(), acc.GetSize());
			sStream = sStream + sBody + "\nQ";
			pContents->SetData((FX_LPCBYTE)sStream, sStream.GetLength(), FALSE, FALSE);
			pContentsArray->AddReference(pDocument, dwObjNum);
			break;
		}
		
	case PDFOBJ_ARRAY:
		{
			pContentsArray = (CPDF_Array*)pContentsObj;
			break;
		}
	default:
		break;
	}	
	
	if (!pContentsArray)return;
	
	FX_DWORD dwObjNum = pDocument->AddIndirectObject(pContentsArray);
	pPage->SetAtReference("Contents", pDocument, dwObjNum);
	
	if (!key.IsEmpty())
	{
		CPDF_Stream* pNewContents = FX_NEW CPDF_Stream(NULL, 0, FX_NEW CPDF_Dictionary);
		dwObjNum = pDocument->AddIndirectObject(pNewContents);
		pContentsArray->AddReference(pDocument, dwObjNum);
		
		CFX_ByteString sStream;
		sStream.Format("q 1 0 0 1 0 0 cm /%s Do Q", key.c_str());
		pNewContents->SetData((FX_LPCBYTE)sStream, sStream.GetLength(), FALSE, FALSE);
	}
}

DLLEXPORT void STDCALL FPDFPage_InsertClipPath(FPDF_PAGE page,
                                               FPDF_CLIPPATH clipPath) {
  CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
  if (!pPage)
    return;

  CPDF_Dictionary* pPageDic = pPage->m_pFormDict;
  CPDF_Object* pContentObj =
      pPageDic ? pPageDic->GetObjectFor("Contents") : nullptr;
  if (!pContentObj)
    pContentObj = pPageDic ? pPageDic->GetArrayFor("Contents") : nullptr;
  if (!pContentObj)
    return;

  CFX_ByteTextBuf strClip;
  CPDF_ClipPath* pClipPath = (CPDF_ClipPath*)clipPath;
  uint32_t i;
  for (i = 0; i < pClipPath->GetPathCount(); i++) {
    CPDF_Path path = pClipPath->GetPath(i);
    int iClipType = pClipPath->GetClipType(i);
    if (path.GetPoints().empty()) {
      // Empty clipping (totally clipped out)
      strClip << "0 0 m W n ";
    } else {
      OutputPath(strClip, path);
      if (iClipType == FXFILL_WINDING)
        strClip << "W n\n";
      else
        strClip << "W* n\n";
    }
  }
  CPDF_Document* pDoc = pPage->m_pDocument;
  if (!pDoc)
    return;

  CPDF_Stream* pStream = pDoc->NewIndirect<CPDF_Stream>(
      nullptr, 0,
      pdfium::MakeUnique<CPDF_Dictionary>(pDoc->GetByteStringPool()));
  pStream->SetData(strClip.GetBuffer(), strClip.GetSize());

  CPDF_Array* pArray = ToArray(pContentObj);
  if (pArray) {
    pArray->InsertNewAt<CPDF_Reference>(0, pDoc, pStream->GetObjNum());
    return;
  }
  CPDF_Reference* pReference = ToReference(pContentObj);
  if (!pReference)
    return;

  CPDF_Object* pDirectObj = pReference->GetDirect();
  if (!pDirectObj)
    return;

  CPDF_Array* pObjArray = pDirectObj->AsArray();
  if (pObjArray) {
    pObjArray->InsertNewAt<CPDF_Reference>(0, pDoc, pStream->GetObjNum());
    return;
  }
  if (pDirectObj->IsStream()) {
    CPDF_Array* pContentArray = pDoc->NewIndirect<CPDF_Array>();
    pContentArray->AddNew<CPDF_Reference>(pDoc, pStream->GetObjNum());
    pContentArray->AddNew<CPDF_Reference>(pDoc, pDirectObj->GetObjNum());
    pPageDic->SetNewFor<CPDF_Reference>("Contents", pDoc,
                                        pContentArray->GetObjNum());
  }
}

//.........这里部分代码省略.........
  for (int i = 0; i < nStreams; i++) {
    CPDF_Dictionary* pAnnotDic = ObjectArray.GetAt(i);
    if (!pAnnotDic)
      continue;

    CFX_FloatRect rcAnnot = pAnnotDic->GetRectFor("Rect");
    rcAnnot.Normalize();

    CFX_ByteString sAnnotState = pAnnotDic->GetStringFor("AS");
    CPDF_Dictionary* pAnnotAP = pAnnotDic->GetDictFor("AP");
    if (!pAnnotAP)
      continue;

    CPDF_Stream* pAPStream = pAnnotAP->GetStreamFor("N");
    if (!pAPStream) {
      CPDF_Dictionary* pAPDic = pAnnotAP->GetDictFor("N");
      if (!pAPDic)
        continue;

      if (!sAnnotState.IsEmpty()) {
        pAPStream = pAPDic->GetStreamFor(sAnnotState);
      } else {
        auto it = pAPDic->begin();
        if (it != pAPDic->end()) {
          CPDF_Object* pFirstObj = it->second;
          if (pFirstObj) {
            if (pFirstObj->IsReference())
              pFirstObj = pFirstObj->GetDirect();
            if (!pFirstObj->IsStream())
              continue;
            pAPStream = pFirstObj->AsStream();
          }
        }
      }
    }
    if (!pAPStream)
      continue;

    CPDF_Dictionary* pAPDic = pAPStream->GetDict();
    CFX_Matrix matrix = pAPDic->GetMatrixFor("Matrix");

    CFX_FloatRect rcStream;
    if (pAPDic->KeyExist("Rect"))
      rcStream = pAPDic->GetRectFor("Rect");
    else if (pAPDic->KeyExist("BBox"))
      rcStream = pAPDic->GetRectFor("BBox");

    if (rcStream.IsEmpty())
      continue;

    CPDF_Object* pObj = pAPStream;

    if (pObj) {
      CPDF_Dictionary* pObjDic = pObj->GetDict();
      if (pObjDic) {
        pObjDic->SetNameFor("Type", "XObject");
        pObjDic->SetNameFor("Subtype", "Form");
      }
    }

    CPDF_Dictionary* pXObject = pNewXORes->GetDictFor("XObject");
    if (!pXObject) {
      pXObject = new CPDF_Dictionary(pDocument->GetByteStringPool());
      pNewXORes->SetFor("XObject", pXObject);
    }

    CFX_ByteString sFormName;
    sFormName.Format("F%d", i);
    pXObject->SetReferenceFor(sFormName, pDocument,
                              pDocument->AddIndirectObject(pObj));

    CPDF_StreamAcc acc;
    acc.LoadAllData(pNewXObject);

    const uint8_t* pData = acc.GetData();
    CFX_ByteString sStream(pData, acc.GetSize());

    if (matrix.IsIdentity()) {
      matrix.a = 1.0f;
      matrix.b = 0.0f;
      matrix.c = 0.0f;
      matrix.d = 1.0f;
      matrix.e = 0.0f;
      matrix.f = 0.0f;
    }

    CFX_ByteString sTemp;
    CFX_Matrix m = GetMatrix(rcAnnot, rcStream, matrix);
    sTemp.Format("q %f 0 0 %f %f %f cm /%s Do Q\n", m.a, m.d, m.e, m.f,
                 sFormName.c_str());
    sStream += sTemp;
    pNewXObject->SetData(sStream.raw_str(), sStream.GetLength());
  }
  pPageDict->RemoveFor("Annots");

  ObjectArray.RemoveAll();
  RectArray.RemoveAll();

  return FLATTEN_SUCCESS;
}

void SetPageContents(CFX_ByteString key,
                     CPDF_Dictionary* pPage,
                     CPDF_Document* pDocument) {
  CPDF_Object* pContentsObj = pPage->GetStreamFor("Contents");
  if (!pContentsObj) {
    pContentsObj = pPage->GetArrayFor("Contents");
  }

  if (!pContentsObj) {
    // Create a new contents dictionary
    if (!key.IsEmpty()) {
      CPDF_Stream* pNewContents = new CPDF_Stream(
          nullptr, 0, new CPDF_Dictionary(pDocument->GetByteStringPool()));
      CFX_ByteString sStream;
      sStream.Format("q 1 0 0 1 0 0 cm /%s Do Q", key.c_str());
      pNewContents->SetData(sStream.raw_str(), sStream.GetLength());
      pPage->SetReferenceFor("Contents", pDocument,
                             pDocument->AddIndirectObject(pNewContents));
    }
    return;
  }

  CPDF_Array* pContentsArray = nullptr;
  switch (pContentsObj->GetType()) {
    case CPDF_Object::STREAM: {
      pContentsArray = new CPDF_Array;
      CPDF_Stream* pContents = pContentsObj->AsStream();
      uint32_t dwObjNum = pDocument->AddIndirectObject(pContents);
      CPDF_StreamAcc acc;
      acc.LoadAllData(pContents);
      CFX_ByteString sStream = "q\n";
      CFX_ByteString sBody =
          CFX_ByteString((const FX_CHAR*)acc.GetData(), acc.GetSize());
      sStream = sStream + sBody + "\nQ";
      pContents->SetData(sStream.raw_str(), sStream.GetLength());
      pContentsArray->AddReference(pDocument, dwObjNum);
      break;
    }

    case CPDF_Object::ARRAY: {
      pContentsArray = pContentsObj->AsArray();
      break;
    }
    default:
      break;
  }

  if (!pContentsArray)
    return;

  pPage->SetReferenceFor("Contents", pDocument,
                         pDocument->AddIndirectObject(pContentsArray));

  if (!key.IsEmpty()) {
    CPDF_Stream* pNewContents = new CPDF_Stream(
        nullptr, 0, new CPDF_Dictionary(pDocument->GetByteStringPool()));
    CFX_ByteString sStream;
    sStream.Format("q 1 0 0 1 0 0 cm /%s Do Q", key.c_str());
    pNewContents->SetData(sStream.raw_str(), sStream.GetLength());
    pContentsArray->AddReference(pDocument,
                                 pDocument->AddIndirectObject(pNewContents));
  }
}