lewp-css 0.2.0

Domain model for CSS Stylesheets. Allowing effective minification and transformations such as autoprefixing and removal by other crates. Updated and maintained version for lewp.
Documentation 
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

// This file is part of css. It is subject to the license terms in the COPYRIGHT file found in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/css/master/COPYRIGHT. No part of predicator, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
// Copyright © 2017 The developers of css. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/css/master/COPYRIGHT.

use {
    super::{
        ViewportLength,
        ViewportOrientation,
        ViewportUserZoom,
        ViewportZoom,
    },
    cssparser::ToCss,
    std::fmt,
};

#[derive(Clone, Debug, PartialEq)]
#[allow(missing_docs)]
pub enum ViewportDescriptor {
    MinWidth(ViewportLength),

    MaxWidth(ViewportLength),

    /// Width with no maximum is similar to MinWidth; with both values, it is equivalent to MinWidth and MaxWidth
    Width {
        minimum: ViewportLength,
        maximum: Option<ViewportLength>,
    },

    MinHeight(ViewportLength),

    MaxHeight(ViewportLength),

    /// Height with no maximum is similar to MinHeight; with both values, it is equivalent to MinHeight and MaxHeight
    Height {
        minimum: ViewportLength,
        maximum: Option<ViewportLength>,
    },

    Zoom(ViewportZoom),

    MinZoom(ViewportZoom),

    MaxZoom(ViewportZoom),

    UserZoom(ViewportUserZoom),

    Orientation(ViewportOrientation),
}

impl ToCss for ViewportDescriptor {
    fn to_css<W: fmt::Write>(&self, dest: &mut W) -> fmt::Result {
        use self::ViewportDescriptor::*;

        match *self {
            MinWidth(ref descriptor_value) => {
                dest.write_str("min-width")?;
                dest.write_char(':')?;
                descriptor_value.to_css(dest)?;
            }

            MaxWidth(ref descriptor_value) => {
                dest.write_str("max-width")?;
                dest.write_char(':')?;
                descriptor_value.to_css(dest)?;
            }

            Width {
                ref minimum,
                ref maximum,
            } => {
                dest.write_str("width")?;
                dest.write_char(':')?;
                minimum.to_css(dest)?;
                if let &Some(ref maximum) = maximum {
                    dest.write_char(' ')?;
                    maximum.to_css(dest)?;
                }
            }

            MinHeight(ref descriptor_value) => {
                dest.write_str("min-height")?;
                dest.write_char(':')?;
                descriptor_value.to_css(dest)?;
            }

            MaxHeight(ref descriptor_value) => {
                dest.write_str("max-height")?;
                dest.write_char(':')?;
                descriptor_value.to_css(dest)?;
            }

            Height {
                ref minimum,
                ref maximum,
            } => {
                dest.write_str("height")?;
                dest.write_char(':')?;
                minimum.to_css(dest)?;
                if let &Some(ref maximum) = maximum {
                    dest.write_char(' ')?;
                    maximum.to_css(dest)?;
                }
            }

            Zoom(ref descriptor_value) => {
                dest.write_str("zoom")?;
                dest.write_char(':')?;
                descriptor_value.to_css(dest)?;
            }

            MinZoom(ref descriptor_value) => {
                dest.write_str("min-zoom")?;
                dest.write_char(':')?;
                descriptor_value.to_css(dest)?;
            }

            MaxZoom(ref descriptor_value) => {
                dest.write_str("max-zoom")?;
                dest.write_char(':')?;
                descriptor_value.to_css(dest)?;
            }

            UserZoom(ref descriptor_value) => {
                dest.write_str("user-zoom")?;
                dest.write_char(':')?;
                descriptor_value.to_css(dest)?;
            }

            Orientation(ref descriptor_value) => {
                dest.write_str("orientation")?;
                dest.write_char(':')?;
                descriptor_value.to_css(dest)?;
            }
        }
        dest.write_char(';')
    }
}

impl ViewportDescriptor {
    #[inline(always)]
    pub fn css_name(&self) -> &'static str {
        use self::ViewportDescriptor::*;

        match *self {
            MinWidth(_) => "min-width",

            MaxWidth(_) => "max-width",

            Width { .. } => "width",

            MinHeight(_) => "min-height",

            MaxHeight(_) => "max-height",

            Height { .. } => "height",

            Zoom(_) => "zoom",

            MinZoom(_) => "min-zoom",

            MaxZoom(_) => "max-zoom",

            UserZoom(_) => "user-zoom",

            Orientation(_) => "orientation",
        }
    }
}