void CPDF_PageContentGenerator::ProcessImage(CFX_ByteTextBuf& buf, CPDF_ImageObject* pImageObj) { if ((pImageObj->m_Matrix.a == 0 && pImageObj->m_Matrix.b == 0) || (pImageObj->m_Matrix.c == 0 && pImageObj->m_Matrix.d == 0)) { return; } buf << "q " << pImageObj->m_Matrix << " cm "; CPDF_Image* pImage = pImageObj->GetImage(); if (!pImage->IsInline()) { CPDF_Stream* pStream = pImage->GetStream(); uint32_t dwSavedObjNum = pStream->GetObjNum(); CFX_ByteString name = RealizeResource(pStream, "XObject"); if (dwSavedObjNum == 0) { pImageObj->SetUnownedImage(m_pDocument->GetPageData()->GetImage(pStream)); } buf << "/" << PDF_NameEncode(name) << " Do Q\n"; } }
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()); }
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")); CFX_AffineMatrix t = *(CFX_AffineMatrix*)matrix; m.Concat(t); pDict->SetAtMatrix(FX_BSTRC("Matrix"), m); } } } return TRUE; }
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)); } } } }
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()); } }