diff options
Diffstat (limited to 'core/fpdfapi/edit/cpdf_pagecontentgenerator.cpp')
| -rw-r--r-- | core/fpdfapi/edit/cpdf_pagecontentgenerator.cpp | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/core/fpdfapi/edit/cpdf_pagecontentgenerator.cpp b/core/fpdfapi/edit/cpdf_pagecontentgenerator.cpp index eeb6f81721..10b3933742 100644 --- a/core/fpdfapi/edit/cpdf_pagecontentgenerator.cpp +++ b/core/fpdfapi/edit/cpdf_pagecontentgenerator.cpp @@ -65,9 +65,24 @@ void CPDF_PageContentGenerator::GenerateContent() { CPDF_Document* pDoc = m_pDocument.Get(); std::ostringstream buf; + + // Set the default graphic state values + buf << "q\n"; + if (!m_pObjHolder->GetLastCTM().IsIdentity()) { + CFX_Matrix reverse; + reverse.SetReverse(m_pObjHolder->GetLastCTM()); + buf << reverse << " cm\n"; + } + ProcessDefaultGraphics(&buf); + + // Process the page objects if (!ProcessPageObjects(&buf)) return; + // Return graphics to original state + buf << "Q\n"; + + // Add buffer to a stream in page's 'Contents' CPDF_Dictionary* pPageDict = m_pObjHolder->m_pFormDict.Get(); CPDF_Object* pContent = pPageDict ? pPageDict->GetObjectFor("Contents") : nullptr; @@ -142,6 +157,7 @@ bool CPDF_PageContentGenerator::ProcessPageObjects(std::ostringstream* buf) { for (auto& pPageObj : m_pageObjects) { if (m_pObjHolder->IsPage() && !pPageObj->IsDirty()) continue; + bDirty = true; if (CPDF_ImageObject* pImageObject = pPageObj->AsImage()) ProcessImage(buf, pImageObject); @@ -304,6 +320,32 @@ void CPDF_PageContentGenerator::ProcessGraphics(std::ostringstream* buf, *buf << "/" << PDF_NameEncode(name) << " gs "; } +void CPDF_PageContentGenerator::ProcessDefaultGraphics( + std::ostringstream* buf) { + *buf << "0 0 0 RG 0 0 0 rg 1 w " + << static_cast<int>(CFX_GraphStateData::LineCapButt) << " J " + << static_cast<int>(CFX_GraphStateData::LineJoinMiter) << " j\n"; + GraphicsData defaultGraphics; + defaultGraphics.fillAlpha = 1.0f; + defaultGraphics.strokeAlpha = 1.0f; + defaultGraphics.blendType = FXDIB_BLEND_NORMAL; + auto it = m_pObjHolder->m_GraphicsMap.find(defaultGraphics); + CFX_ByteString name; + if (it != m_pObjHolder->m_GraphicsMap.end()) { + name = it->second; + } else { + auto gsDict = pdfium::MakeUnique<CPDF_Dictionary>(); + gsDict->SetNewFor<CPDF_Number>("ca", defaultGraphics.fillAlpha); + gsDict->SetNewFor<CPDF_Number>("CA", defaultGraphics.strokeAlpha); + gsDict->SetNewFor<CPDF_Name>("BM", "Normal"); + CPDF_Object* pDict = m_pDocument->AddIndirectObject(std::move(gsDict)); + uint32_t dwObjNum = pDict->GetObjNum(); + name = RealizeResource(dwObjNum, "ExtGState"); + m_pObjHolder->m_GraphicsMap[defaultGraphics] = name; + } + *buf << "/" << PDF_NameEncode(name).c_str() << " gs "; +} + // This method adds text to the buffer, BT begins the text object, ET ends it. // Tm sets the text matrix (allows positioning and transforming text). // Tf sets the font name (from Font in Resources) and font size. |