aboutsummaryrefslogtreecommitdiff
path: root/helix-view/src/theme.rs
blob: ad15f6f27f9c84e9f1a3be2bf51c8f86fe001227 (plain) (blame)
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
use helix_core::hashmap;
use std::collections::HashMap;

#[cfg(feature = "term")]
pub use tui::style::{Color, Style};

// #[derive(Clone, Copy, PartialEq, Eq, Default, Hash)]
// pub struct Color {
//     pub r: u8,
//     pub g: u8,
//     pub b: u8,
// }

// impl Color {
//     pub fn new(r: u8, g: u8, b: u8) -> Self {
//         Self { r, g, b }
//     }
// }

// #[cfg(feature = "term")]
// impl Into<tui::style::Color> for Color {
//     fn into(self) -> tui::style::Color {
//         tui::style::Color::Rgb(self.r, self.g, self.b)
//     }
// }

// impl std::str::FromStr for Color {
//     type Err = ();

//     /// Tries to parse a string (`'#FFFFFF'` or `'FFFFFF'`) into RGB.
//     fn from_str(input: &str) -> Result<Self, Self::Err> {
//         let input = input.trim();
//         let input = match (input.chars().next(), input.len()) {
//             (Some('#'), 7) => &input[1..],
//             (_, 6) => input,
//             _ => return Err(()),
//         };

//         u32::from_str_radix(&input, 16)
//             .map(|s| Color {
//                 r: ((s >> 16) & 0xFF) as u8,
//                 g: ((s >> 8) & 0xFF) as u8,
//                 b: (s & 0xFF) as u8,
//             })
//             .map_err(|_| ())
//     }
// }

// #[derive(Clone, Copy, PartialEq, Eq, Default, Hash)]
// pub struct Style {
//     pub fg: Option<Color>,
//     pub bg: Option<Color>,
//     // TODO: modifiers (bold, underline, italic, etc)
// }

// impl Style {
//     pub fn fg(mut self, fg: Color) -> Self {
//         self.fg = Some(fg);
//         self
//     }

//     pub fn bg(mut self, bg: Color) -> Self {
//         self.bg = Some(bg);
//         self
//     }
// }

// #[cfg(feature = "term")]
// impl Into<tui::style::Style> for Style {
//     fn into(self) -> tui::style::Style {
//         let style = tui::style::Style::default();

//         if let Some(fg) = self.fg {
//             style.fg(fg.into());
//         }

//         if let Some(bg) = self.bg {
//             style.bg(bg.into());
//         }

//         style
//     }
// }

/// Color theme for syntax highlighting.
pub struct Theme {
    scopes: Vec<String>,
    mapping: HashMap<&'static str, Style>,
}

// let highlight_names: Vec<String> = [
//     "attribute",
//     "constant.builtin",
//     "constant",
//     "function.builtin",
//     "function.macro",
//     "function",
//     "keyword",
//     "operator",
//     "property",
//     "punctuation",
//     "comment",
//     "escape",
//     "label",
//     // "punctuation.bracket",
//     "punctuation.delimiter",
//     "string",
//     "string.special",
//     "tag",
//     "type",
//     "type.builtin",
//     "constructor",
//     "variable",
//     "variable.builtin",
//     "variable.parameter",
//     "path",
// ];

impl Default for Theme {
    fn default() -> Self {
        let mapping = hashmap! {
            "attribute" => Style::default().fg(Color::Rgb(219, 191, 239)), // lilac
            "keyword" => Style::default().fg(Color::Rgb(236, 205, 186)), // almond
            "punctuation" => Style::default().fg(Color::Rgb(164, 160, 232)), // lavender
            "punctuation.delimiter" => Style::default().fg(Color::Rgb(164, 160, 232)), // lavender
            "operator" => Style::default().fg(Color::Rgb(219, 191, 239)), // lilac
            "property" => Style::default().fg(Color::Rgb(164, 160, 232)), // lavender
            "variable.parameter" => Style::default().fg(Color::Rgb(164, 160, 232)), // lavender
            // TODO distinguish type from type.builtin?
            "type" => Style::default().fg(Color::Rgb(255, 255, 255)), // white
            "type.builtin" => Style::default().fg(Color::Rgb(255, 255, 255)), // white
            "constructor" => Style::default().fg(Color::Rgb(219, 191, 239)), // lilac
            "function" => Style::default().fg(Color::Rgb(255, 255, 255)), // white
            "function.macro" => Style::default().fg(Color::Rgb(219, 191, 239)), // lilac
            "comment" => Style::default().fg(Color::Rgb(105, 124, 129)), // sirocco
            "variable.builtin" => Style::default().fg(Color::Rgb(159, 242, 143)), // mint
            "constant" => Style::default().fg(Color::Rgb(255, 255, 255)), // white
            "constant.builtin" => Style::default().fg(Color::Rgb(255, 255, 255)), // white
            "string" => Style::default().fg(Color::Rgb(204, 204, 204)), // silver
            "escape" => Style::default().fg(Color::Rgb(239, 186, 93)), // honey
            // used for lifetimes
            "label" => Style::default().fg(Color::Rgb(239, 186, 93)), // honey

            // TODO: diferentiate number builtin
            // TODO: diferentiate doc comment
            // TODO: variable as lilac
            // TODO: mod/use statements as white
            // TODO: mod stuff as chamoise
            // TODO: add "(scoped_identifier) @path" for std::mem::
            //
            // concat (ERROR) @syntax-error and "MISSING ;" selectors for errors

            "module" => Style::default().fg(Color::Rgb(255, 0, 0)), // white
            "variable" => Style::default().fg(Color::Rgb(255, 0, 0)), // white
            "function.builtin" => Style::default().fg(Color::Rgb(255, 0, 0)), // white

            "ui.background" => Style::default().bg(Color::Rgb(59, 34, 76)), // midnight
            "ui.linenr" => Style::default().fg(Color::Rgb(90, 89, 119)), // comet
            "ui.statusline" => Style::default().bg(Color::Rgb(40, 23, 51)), // revolver
            "ui.popup" => Style::default().bg(Color::Rgb(40, 23, 51)), // revolver

            "warning" => Style::default().fg(Color::Rgb(255, 205, 28)),
        };

        let scopes = mapping.keys().map(ToString::to_string).collect();

        Self { mapping, scopes }
    }
}

impl Theme {
    pub fn get(&self, scope: &str) -> Style {
        self.mapping
            .get(scope)
            .copied()
            .unwrap_or_else(|| Style::default().fg(Color::Rgb(0, 0, 255)))
    }

    #[inline]
    pub fn scopes(&self) -> &[String] {
        &self.scopes
    }
}