1 // Copyright 2016 PDFium Authors. All rights reserved. 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_dictionary.h" 10 #include "core/fpdfapi/parser/cpdf_document.h" 11 #include "core/fpdfapi/parser/cpdf_name.h" 12 CPDF_ViewerPreferences(const CPDF_Document * pDoc)13CPDF_ViewerPreferences::CPDF_ViewerPreferences(const CPDF_Document* pDoc) 14 : m_pDoc(pDoc) {} 15 16 CPDF_ViewerPreferences::~CPDF_ViewerPreferences() = default; 17 IsDirectionR2L() const18bool CPDF_ViewerPreferences::IsDirectionR2L() const { 19 const CPDF_Dictionary* pDict = GetViewerPreferences(); 20 return pDict && pDict->GetStringFor("Direction") == "R2L"; 21 } 22 PrintScaling() const23bool CPDF_ViewerPreferences::PrintScaling() const { 24 const CPDF_Dictionary* pDict = GetViewerPreferences(); 25 return !pDict || pDict->GetStringFor("PrintScaling") != "None"; 26 } 27 NumCopies() const28int32_t CPDF_ViewerPreferences::NumCopies() const { 29 const CPDF_Dictionary* pDict = GetViewerPreferences(); 30 return pDict ? pDict->GetIntegerFor("NumCopies") : 1; 31 } 32 PrintPageRange() const33CPDF_Array* CPDF_ViewerPreferences::PrintPageRange() const { 34 CPDF_Dictionary* pDict = GetViewerPreferences(); 35 return pDict ? pDict->GetArrayFor("PrintPageRange") : nullptr; 36 } 37 Duplex() const38ByteString CPDF_ViewerPreferences::Duplex() const { 39 const CPDF_Dictionary* pDict = GetViewerPreferences(); 40 return pDict ? pDict->GetStringFor("Duplex") : ByteString("None"); 41 } 42 GenericName(const ByteString & bsKey) const43Optional<ByteString> CPDF_ViewerPreferences::GenericName( 44 const ByteString& bsKey) const { 45 const CPDF_Dictionary* pDict = GetViewerPreferences(); 46 if (!pDict) 47 return {}; 48 49 const CPDF_Name* pName = ToName(pDict->GetObjectFor(bsKey)); 50 if (!pName) 51 return {}; 52 53 return pName->GetString(); 54 } 55 GetViewerPreferences() const56CPDF_Dictionary* CPDF_ViewerPreferences::GetViewerPreferences() const { 57 CPDF_Dictionary* pDict = m_pDoc->GetRoot(); 58 return pDict ? pDict->GetDictFor("ViewerPreferences") : nullptr; 59 } 60