1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/*
* 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/Font/Font.h>
#include <LibGfx/Path.h>
#include <LibPDF/Error.h>
namespace PDF {
class Reader;
class Encoding;
class PS1FontProgram : public RefCounted<PS1FontProgram> {
public:
PDFErrorOr<void> create(ReadonlyBytes const&, RefPtr<Encoding>, size_t cleartext_length, size_t encrypted_length);
RefPtr<Gfx::Bitmap> rasterize_glyph(u32 char_code, float width, Gfx::GlyphSubpixelOffset);
Gfx::Path build_char(u32 char_code, float width);
RefPtr<Encoding> encoding() const { return m_encoding; }
Gfx::FloatPoint glyph_translation(u32 char_code, float width) const;
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;
};
Gfx::AffineTransform glyph_transform_to_device_space(Glyph const&, float width) const;
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<DeprecatedString> 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&, DeprecatedString const&);
static Error error(
DeprecatedString 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 };
};
}
|
