PdfIdentityEncoding.h

// SPDX-FileCopyrightText: 2010 Dominik Seichter <domseichter@web.de>
// SPDX-FileCopyrightText: 2020 Francesco Pretto <ceztko@gmail.com>
// SPDX-License-Identifier: LGPL-2.0-or-later OR MPL-2.0
 
#ifndef PDF_IDENTITY_ENCODING_H
#define PDF_IDENTITY_ENCODING_H
 
#include "PdfEncodingMap.h"
#include "PdfObject.h"
 
namespace PoDoFo {
 
enum class PdfIdentityOrientation : uint8_t
{
    Unkwnown = 0,
    Horizontal, // Corresponds to /Identity-H
    Vertical,   // Corresponds to /Identity-V
};
 
class PODOFO_API PdfIdentityEncoding final : public PdfEncodingMap
{
    friend class PdfEncodingMapFactory;
    friend class PdfEncodingFactory;
    friend class PdfFontMetrics;
    PODOFO_PRIVATE_FRIEND(class PdfEncodingTest);
 
private:
    PdfIdentityEncoding(PdfEncodingMapType type, unsigned char codeSpaceSize);
 
    PdfIdentityEncoding(PdfIdentityOrientation orientation);
 
    PdfIdentityEncoding(PdfEncodingMapType type, const PdfEncodingLimits& limits,
        PdfIdentityOrientation orientation);
protected:
    bool tryGetCharCode(char32_t codePoint, PdfCharCode& codeUnit) const override;
    bool tryGetCodePoints(const PdfCharCode& codeUnit, const unsigned* cidId, CodePointSpan& codePoints) const override;
    void getExportObject(PdfIndirectObjectList& objects, PdfName& name, PdfObject*& obj) const override;
    void AppendToUnicodeEntries(OutputStream& stream, const PdfFont& font, charbuff& temp) const override;
    void AppendCIDMappingEntries(OutputStream& stream, const PdfFont& font, charbuff& temp) const override;
 
public:
    const PdfEncodingLimits& GetLimits() const override;
 
    PdfPredefinedEncodingType GetPredefinedEncodingType() const override;
 
private:
    PdfEncodingLimits m_Limits;
    PdfIdentityOrientation m_orientation;
};
 
};
 
#endif // PDF_IDENTITY_ENCODING_H