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- /*
- * Copyright (c) 2022, Julian Offenhäuser <offenhaeuser@protonmail.com>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #pragma once
- #include <AK/Forward.h>
- #include <LibGfx/AffineTransform.h>
- #include <LibGfx/Path.h>
- #include <LibPDF/Error.h>
- namespace PDF {
- class Reader;
- class Encoding;
- class PS1FontProgram : public RefCounted<PS1FontProgram> {
- public:
- PDFErrorOr<void> parse(ReadonlyBytes const&, size_t cleartext_length, size_t encrypted_length);
- Gfx::Path build_char(u32 code_point, Gfx::FloatPoint const& point, float width);
- RefPtr<Encoding> encoding() const { return m_encoding; }
- private:
- struct Glyph {
- Gfx::Path path;
- float width;
- };
- struct GlyphParserState {
- Glyph glyph;
- Gfx::FloatPoint point;
- bool flex_feature { false };
- size_t flex_index;
- Array<float, 14> flex_sequence;
- size_t sp { 0 };
- Array<float, 24> stack;
- size_t postscript_sp { 0 };
- Array<float, 24> postscript_stack;
- };
- PDFErrorOr<Glyph> parse_glyph(ReadonlyBytes const&, GlyphParserState&);
- PDFErrorOr<void> parse_encrypted_portion(ByteBuffer const&);
- PDFErrorOr<Vector<ByteBuffer>> parse_subroutines(Reader&);
- PDFErrorOr<Vector<float>> parse_number_array(Reader&, size_t length);
- PDFErrorOr<String> parse_word(Reader&);
- PDFErrorOr<float> parse_float(Reader&);
- PDFErrorOr<int> parse_int(Reader&);
- PDFErrorOr<ByteBuffer> decrypt(ReadonlyBytes const&, u16 key, size_t skip);
- bool seek_name(Reader&, String const&);
- static Error error(
- String const& message
- #ifdef PDF_DEBUG
- ,
- SourceLocation loc = SourceLocation::current()
- #endif
- );
- Vector<ByteBuffer> m_subroutines;
- Vector<ByteBuffer> m_character_names;
- HashMap<u16, Glyph> m_glyph_map;
- Gfx::AffineTransform m_font_matrix;
- RefPtr<Encoding> m_encoding;
- u16 m_encryption_key { 4330 };
- int m_lenIV { 4 };
- };
- }
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