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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/CharacterTypes.h>
#include <AK/MappedFile.h>
#include <AK/RefCounted.h>
#include <AK/RefPtr.h>
#include <AK/String.h>
#include <AK/Types.h>
#include <LibGfx/Font.h>
#include <LibGfx/Size.h>
namespace Gfx {
class BitmapFont final : public Font {
public:
NonnullRefPtr<Font> clone() const override;
static NonnullRefPtr<BitmapFont> create(u8 glyph_height, u8 glyph_width, bool fixed, size_t glyph_count);
NonnullRefPtr<BitmapFont> masked_character_set() const;
NonnullRefPtr<BitmapFont> unmasked_character_set() const;
static RefPtr<BitmapFont> load_from_file(String const& path);
bool write_to_file(String const& path);
~BitmapFont();
u8 presentation_size() const override { return m_presentation_size; }
void set_presentation_size(u8 size) { m_presentation_size = size; }
u16 weight() const override { return m_weight; }
void set_weight(u16 weight) { m_weight = weight; }
u8 slope() const { return m_slope; }
void set_slope(u8 slope) { m_slope = slope; }
Glyph glyph(u32 code_point) const override;
Glyph raw_glyph(u32 code_point) const;
bool contains_glyph(u32 code_point) const override;
ALWAYS_INLINE int glyph_or_emoji_width(u32 code_point) const override
{
if (m_fixed_width)
return m_glyph_width;
return glyph_or_emoji_width_for_variable_width_font(code_point);
}
u8 glyph_height() const override { return m_glyph_height; }
int x_height() const override { return m_x_height; }
u8 glyph_width(u32 code_point) const override;
u8 raw_glyph_width(u32 code_point) const { return m_glyph_widths[code_point]; }
u8 min_glyph_width() const override { return m_min_glyph_width; }
u8 max_glyph_width() const override { return m_max_glyph_width; }
u8 glyph_fixed_width() const override { return m_glyph_width; }
u8 baseline() const override { return m_baseline; }
void set_baseline(u8 baseline)
{
m_baseline = baseline;
update_x_height();
}
u8 mean_line() const override { return m_mean_line; }
void set_mean_line(u8 mean_line)
{
m_mean_line = mean_line;
update_x_height();
}
int width(StringView const&) const override;
int width(Utf8View const&) const override;
int width(Utf32View const&) const override;
String name() const override { return m_name; }
void set_name(String name) { m_name = move(name); }
bool is_fixed_width() const override { return m_fixed_width; }
void set_fixed_width(bool b) { m_fixed_width = b; }
u8 glyph_spacing() const override { return m_glyph_spacing; }
void set_glyph_spacing(u8 spacing) { m_glyph_spacing = spacing; }
void set_glyph_width(u32 code_point, u8 width)
{
VERIFY(m_glyph_widths);
m_glyph_widths[code_point] = width;
}
size_t glyph_count() const override { return m_glyph_count; }
Optional<size_t> glyph_index(u32 code_point) const;
u16 range_size() const { return m_range_mask_size; }
bool is_range_empty(u32 code_point) const { return !(m_range_mask[code_point / 256 / 8] & 1 << (code_point / 256 % 8)); }
String family() const override { return m_family; }
void set_family(String family) { m_family = move(family); }
String variant() const override;
String qualified_name() const override;
private:
BitmapFont(String name, String family, u32* rows, u8* widths, bool is_fixed_width,
u8 glyph_width, u8 glyph_height, u8 glyph_spacing, u16 range_mask_size, u8* range_mask,
u8 baseline, u8 mean_line, u8 presentation_size, u16 weight, u8 slope, bool owns_arrays = false);
static RefPtr<BitmapFont> load_from_memory(u8 const*);
template<typename T>
int unicode_view_width(T const& view) const;
void update_x_height() { m_x_height = m_baseline - m_mean_line; };
int glyph_or_emoji_width_for_variable_width_font(u32 code_point) const;
String m_name;
String m_family;
size_t m_glyph_count { 0 };
u16 m_range_mask_size { 0 };
u8* m_range_mask { nullptr };
Vector<Optional<size_t>> m_range_indices;
u32* m_rows { nullptr };
u8* m_glyph_widths { nullptr };
RefPtr<MappedFile> m_mapped_file;
u8 m_glyph_width { 0 };
u8 m_glyph_height { 0 };
u8 m_x_height { 0 };
u8 m_min_glyph_width { 0 };
u8 m_max_glyph_width { 0 };
u8 m_glyph_spacing { 0 };
u8 m_baseline { 0 };
u8 m_mean_line { 0 };
u8 m_presentation_size { 0 };
u16 m_weight { 0 };
u8 m_slope { 0 };
bool m_fixed_width { false };
bool m_owns_arrays { false };
};
}
|
