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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use log::debug;
use ucd::{Codepoint, UnicodeBlock};
use crate::text::util::unicode_plane;
pub fn for_each_available_family<F>(mut callback: F)
where
F: FnMut(String),
{
let family_names = core_text::font_collection::get_family_names();
for family_name in family_names.iter() {
callback(family_name.to_string());
}
}
pub fn for_each_variation<F>(family_name: &str, mut callback: F)
where
F: FnMut(String),
{
debug!("Looking for faces of family: {}", family_name);
let family_collection = core_text::font_collection::create_for_family(family_name);
if let Some(family_collection) = family_collection {
if let Some(family_descriptors) = family_collection.get_descriptors() {
for family_descriptor in family_descriptors.iter() {
callback(family_descriptor.font_name());
}
}
}
}
pub fn system_default_family(_generic_name: &str) -> Option<String> {
None
}
// Based on gfxPlatformMac::GetCommonFallbackFonts() in Gecko
pub fn fallback_font_families(codepoint: Option<char>) -> Vec<&'static str> {
let mut families = vec!["Lucida Grande"];
if let Some(codepoint) = codepoint {
match unicode_plane(codepoint) {
// https://en.wikipedia.org/wiki/Plane_(Unicode)#Basic_Multilingual_Plane
0 => {
if let Some(block) = codepoint.block() {
match block {
UnicodeBlock::Arabic |
UnicodeBlock::Syriac |
UnicodeBlock::ArabicSupplement |
UnicodeBlock::Thaana |
UnicodeBlock::NKo => {
families.push("Geeza Pro");
},
UnicodeBlock::Devanagari => {
families.push("Devanagari Sangam MN");
},
UnicodeBlock::Gurmukhi => {
families.push("Gurmukhi MN");
},
UnicodeBlock::Gujarati => {
families.push("Gujarati Sangam MN");
},
UnicodeBlock::Tamil => {
families.push("Tamil MN");
},
UnicodeBlock::Lao => {
families.push("Lao MN");
},
UnicodeBlock::Tibetan => {
families.push("Songti SC");
},
UnicodeBlock::Myanmar => {
families.push("Myanmar MN");
},
UnicodeBlock::Ethiopic |
UnicodeBlock::EthiopicSupplement |
UnicodeBlock::EthiopicExtended |
UnicodeBlock::EthiopicExtendedA => {
families.push("Kefa");
},
UnicodeBlock::Cherokee => {
families.push("Plantagenet Cherokee");
},
UnicodeBlock::UnifiedCanadianAboriginalSyllabics |
UnicodeBlock::UnifiedCanadianAboriginalSyllabicsExtended => {
families.push("Euphemia UCAS");
},
UnicodeBlock::Mongolian |
UnicodeBlock::YiSyllables |
UnicodeBlock::YiRadicals => {
families.push("STHeiti");
},
UnicodeBlock::Khmer | UnicodeBlock::KhmerSymbols => {
families.push("Khmer MN");
},
UnicodeBlock::TaiLe => {
families.push("Microsoft Tai Le");
},
UnicodeBlock::GeneralPunctuation |
UnicodeBlock::SuperscriptsandSubscripts |
UnicodeBlock::CurrencySymbols |
UnicodeBlock::CombiningDiacriticalMarksforSymbols |
UnicodeBlock::LetterlikeSymbols |
UnicodeBlock::NumberForms |
UnicodeBlock::Arrows |
UnicodeBlock::MathematicalOperators |
UnicodeBlock::MiscellaneousTechnical |
UnicodeBlock::ControlPictures |
UnicodeBlock::OpticalCharacterRecognition |
UnicodeBlock::EnclosedAlphanumerics |
UnicodeBlock::BoxDrawing |
UnicodeBlock::BlockElements |
UnicodeBlock::GeometricShapes |
UnicodeBlock::MiscellaneousSymbols |
UnicodeBlock::Dingbats |
UnicodeBlock::MiscellaneousMathematicalSymbolsA |
UnicodeBlock::SupplementalArrowsA |
UnicodeBlock::SupplementalArrowsB |
UnicodeBlock::MiscellaneousMathematicalSymbolsB |
UnicodeBlock::SupplementalMathematicalOperators |
UnicodeBlock::MiscellaneousSymbolsandArrows |
UnicodeBlock::SupplementalPunctuation => {
families.push("Hiragino Kaku Gothic ProN");
families.push("Apple Symbols");
families.push("Menlo");
families.push("STIXGeneral");
},
UnicodeBlock::BraillePatterns => {
families.push("Apple Braille");
},
UnicodeBlock::Bopomofo |
UnicodeBlock::HangulCompatibilityJamo |
UnicodeBlock::Kanbun |
UnicodeBlock::BopomofoExtended |
UnicodeBlock::CJKStrokes |
UnicodeBlock::KatakanaPhoneticExtensions => {
families.push("Hiragino Sans GB");
},
UnicodeBlock::YijingHexagramSymbols |
UnicodeBlock::CyrillicExtendedB |
UnicodeBlock::Bamum |
UnicodeBlock::ModifierToneLetters |
UnicodeBlock::LatinExtendedD |
UnicodeBlock::ArabicPresentationFormsA |
UnicodeBlock::HalfwidthandFullwidthForms |
UnicodeBlock::Specials => {
families.push("Apple Symbols");
},
_ => {},
}
}
},
// https://en.wikipedia.org/wiki/Plane_(Unicode)#Supplementary_Multilingual_Plane
1 => {
families.push("Apple Symbols");
families.push("STIXGeneral");
},
// https://en.wikipedia.org/wiki/Plane_(Unicode)#Supplementary_Ideographic_Plane
2 => {
// Systems with MS Office may have these fonts
families.push("MingLiU-ExtB");
families.push("SimSun-ExtB");
},
_ => {},
}
}
families.push("Geneva");
families.push("Arial Unicode MS");
families
}
pub static SANS_SERIF_FONT_FAMILY: &'static str = "Helvetica";
|
