1 // Copyright 2016 The PDFium Authors 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 #include "core/fpdfdoc/cpdf_viewerpreferences.h" 8 9 #include "core/fpdfapi/parser/cpdf_array.h" 10 #include "core/fpdfapi/parser/cpdf_dictionary.h" 11 #include "core/fpdfapi/parser/cpdf_document.h" 12 #include "core/fpdfapi/parser/cpdf_name.h" 13 CPDF_ViewerPreferences(const CPDF_Document * pDoc)14CPDF_ViewerPreferences::CPDF_ViewerPreferences(const CPDF_Document* pDoc) 15 : m_pDoc(pDoc) {} 16 17 CPDF_ViewerPreferences::~CPDF_ViewerPreferences() = default; 18 IsDirectionR2L() const19bool CPDF_ViewerPreferences::IsDirectionR2L() const { 20 RetainPtr<const CPDF_Dictionary> pDict = GetViewerPreferences(); 21 return pDict && pDict->GetByteStringFor("Direction") == "R2L"; 22 } 23 PrintScaling() const24bool CPDF_ViewerPreferences::PrintScaling() const { 25 RetainPtr<const CPDF_Dictionary> pDict = GetViewerPreferences(); 26 return !pDict || pDict->GetByteStringFor("PrintScaling") != "None"; 27 } 28 NumCopies() const29int32_t CPDF_ViewerPreferences::NumCopies() const { 30 RetainPtr<const CPDF_Dictionary> pDict = GetViewerPreferences(); 31 return pDict ? pDict->GetIntegerFor("NumCopies") : 1; 32 } 33 PrintPageRange() const34RetainPtr<const CPDF_Array> CPDF_ViewerPreferences::PrintPageRange() const { 35 RetainPtr<const CPDF_Dictionary> pDict = GetViewerPreferences(); 36 return pDict ? pDict->GetArrayFor("PrintPageRange") : nullptr; 37 } 38 Duplex() const39ByteString CPDF_ViewerPreferences::Duplex() const { 40 RetainPtr<const CPDF_Dictionary> pDict = GetViewerPreferences(); 41 return pDict ? pDict->GetByteStringFor("Duplex") : ByteString("None"); 42 } 43 GenericName(const ByteString & bsKey) const44absl::optional<ByteString> CPDF_ViewerPreferences::GenericName( 45 const ByteString& bsKey) const { 46 RetainPtr<const CPDF_Dictionary> pDict = GetViewerPreferences(); 47 if (!pDict) 48 return absl::nullopt; 49 50 RetainPtr<const CPDF_Name> pName = ToName(pDict->GetObjectFor(bsKey)); 51 if (!pName) 52 return absl::nullopt; 53 54 return pName->GetString(); 55 } 56 GetViewerPreferences() const57RetainPtr<const CPDF_Dictionary> CPDF_ViewerPreferences::GetViewerPreferences() 58 const { 59 const CPDF_Dictionary* pDict = m_pDoc->GetRoot(); 60 return pDict ? pDict->GetDictFor("ViewerPreferences") : nullptr; 61 } 62