cpdf_viewerpreferences.h

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// Copyright 2016 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
#ifndef CORE_FPDFDOC_CPDF_VIEWERPREFERENCES_H_
#define CORE_FPDFDOC_CPDF_VIEWERPREFERENCES_H_
 
#include <stdint.h>
 
#include <optional>
 
#include "core/fxcrt/bytestring.h"
#include "core/fxcrt/retain_ptr.h"
#include "core/fxcrt/unowned_ptr.h"
 
class CPDF_Array;
class CPDF_Dictionary;
class CPDF_Document;
 
class CPDF_ViewerPreferences {
 public:
  explicit CPDF_ViewerPreferences(const CPDF_Document* pDoc);
  ~CPDF_ViewerPreferences();
 
  bool IsDirectionR2L() const;
  bool PrintScaling() const;
  int32_t NumCopies() const;
  RetainPtr<const CPDF_Array> PrintPageRange() const;
  ByteString Duplex() const;
 
  // Gets the entry for |bsKey|.
  std::optional<ByteString> GenericName(const ByteString& bsKey) const;
 
 private:
  RetainPtr<const CPDF_Dictionary> GetViewerPreferences() const;
 
  UnownedPtr<const CPDF_Document> const m_pDoc;
};
 
#endif  // CORE_FPDFDOC_CPDF_VIEWERPREFERENCES_H_