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

// Code based on [https://github.com/defuz/sublimate/blob/master/src/core/syntax/scope.rs](https://github.com/defuz/sublimate/blob/master/src/core/syntax/scope.rs)
// released under the MIT license by @defuz
use bitflags::bitflags;

/// Foreground and background colors, with font style
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
pub struct Style {
    /// Foreground color
    pub foreground: Color,
    /// Background color
    pub background: Color,
    /// Style of the font
    pub font_style: FontStyle,
}

/// A change to a [`Style`] applied incrementally by a theme rule
///
/// Fields left empty (as `None`) will not modify the corresponding field on a `Style`
///
/// [`Style`]: struct.Style.html
#[derive(Debug, Default, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
pub struct StyleModifier {
    /// Foreground color
    pub foreground: Option<Color>,
    /// Background color
    pub background: Option<Color>,
    /// Style of the font
    pub font_style: Option<FontStyle>,
}

/// RGBA color, directly from the theme
///
/// Because these numbers come directly from the theme, you might have to do your own color space
/// conversion if you're outputting a different color space from the theme. This can be a problem
/// because some Sublime themes use sRGB and some don't. This is specified in an attribute syntect
/// doesn't parse yet.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
pub struct Color {
    /// Red component
    pub r: u8,
    /// Green component
    pub g: u8,
    /// Blue component
    pub b: u8,
    /// Alpha (transparency) component
    pub a: u8,
}

bitflags! {
    /// The color-independent styling of a font - i.e. bold, italicized, and/or underlined
    #[derive(Serialize, Deserialize)]
    pub struct FontStyle: u8 {
        /// Bold font style
        const BOLD = 1;
        /// Underline font style
        const UNDERLINE = 2;
        /// Italic font style
        const ITALIC = 4;
    }
}


impl Color {
    /// The color black (`#000000`)
    pub const BLACK: Color = Color {
        r: 0x00,
        g: 0x00,
        b: 0x00,
        a: 0xFF,
    };

    /// The color white (`#FFFFFF`)
    pub const WHITE: Color = Color {
        r: 0xFF,
        g: 0xFF,
        b: 0xFF,
        a: 0xFF,
    };
}

impl Style {
    /// Applies a change to this style, yielding a new changed style
    pub fn apply(&self, modifier: StyleModifier) -> Style {
        Style {
            foreground: modifier.foreground.unwrap_or(self.foreground),
            background: modifier.background.unwrap_or(self.background),
            font_style: modifier.font_style.unwrap_or(self.font_style),
        }
    }
}

impl Default for Style {
    fn default() -> Style {
        Style {
            foreground: Color::BLACK,
            background: Color::WHITE,
            font_style: FontStyle::empty(),
        }
    }
}

impl StyleModifier {
    /// Applies the other modifier to this one, creating a new modifier.
    ///
    /// Values in `other` are preferred.
    pub fn apply(&self, other: StyleModifier) -> StyleModifier {
        StyleModifier {
            foreground: other.foreground.or(self.foreground),
            background: other.background.or(self.background),
            font_style: other.font_style.or(self.font_style),
        }
    }
}

impl Default for FontStyle {
    fn default() -> FontStyle {
        FontStyle::empty()
    }
}