easy_color 0.1.0

This is a very simple and easy-to-use color conversion tool that can easily convert colors between Hex, RGB, RGBA, HSL, HSLA, HSV, and CMYK. And each type has its unique API, such as RGB can set color channels, RGBA can set transparency, HSL can set hue, saturation, and brightness, and so on.
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

use crate::common::process_hex;
use crate::traits::Color;
use crate::{ColorError, CMYK, HSL, HSLA, HSV, RGB, RGBA};
use std::fmt::{Display, Formatter};
/// Parse a hexadecimal string into a `Hex` object, which can be converted into `RGB`, `RGBA`, `HSL`, `HSLA`, `HSV`, and `CMYK` objects.
///  ### example
///  ```rust
///  use easy_color::Hex;
///  let _hex:Hex = "#FAC".try_into().unwrap();
///  let _hex:Hex = "#FFDFAC".try_into().unwrap();
///  let _hex:Hex = "#FFDFACDC".try_into().unwrap(); // hex with transparency
///  ```
///
/// Convert hex to other types, such as:
/// ```rust
/// use easy_color::{ Hex, RGB };
/// let hex:Hex = "#FFDFAC".try_into().unwrap();
/// let rgb:RGB = hex.into();
/// assert_eq!(rgb.to_string(), "rgb(255,223,172)")
/// ```
#[derive(Debug, Default, PartialEq, Clone, Copy)]
pub struct Hex {
    pub(crate) rgba: (u8, u8, u8, f32),
}

impl TryFrom<&str> for Hex {
    type Error = ColorError;
    fn try_from(hex_str: &str) -> Result<Self, Self::Error> {
        let color = hex_str.trim().to_lowercase();
        if color.starts_with('#') {
            let tmp = color.replace("#", "");
            let len = tmp.len();
            if len == 3 {
                let val = process_hex(tmp.as_str(), 1);
                if val.len() == 3 {
                    return Ok(Self {
                        rgba: (val[0], val[1], val[2], 1.0),
                    });
                }
            }
            if len == 6 {
                let val = process_hex(tmp.as_str(), 2);
                if val.len() == 3 {
                    return Ok(Self {
                        rgba: (val[0], val[1], val[2], 1.0),
                    });
                }
            }

            if len == 8 {
                let val = process_hex(tmp.as_str(), 2);
                if val.len() == 4 {
                    return Ok(Self {
                        rgba: (val[0], val[1], val[2], val[3] as f32 / 255.0),
                    });
                }
            }
        }
        Err(ColorError::FormatErr(format!(
            "'{}' format error!",
            hex_str
        )))
    }
}

impl From<RGB> for Hex {
    fn from(rgb: RGB) -> Self {
        Self {
            rgba: (rgb.r, rgb.g, rgb.b, 1.0),
        }
    }
}
impl From<RGBA> for Hex {
    fn from(rgba: RGBA) -> Self {
        Self {
            rgba: (rgba.r, rgba.g, rgba.b, rgba.a),
        }
    }
}
impl From<HSL> for Hex {
    fn from(hsl: HSL) -> Self {
        let rgb: RGB = hsl.into();
        rgb.into()
    }
}
impl From<HSLA> for Hex {
    fn from(hsla: HSLA) -> Self {
        let rgba: RGBA = hsla.into();
        rgba.into()
    }
}
impl From<HSV> for Hex {
    fn from(hsv: HSV) -> Self {
        let rgb: RGB = hsv.into();
        rgb.into()
    }
}
impl From<CMYK> for Hex {
    fn from(cmyk: CMYK) -> Self {
        let rgb: RGB = cmyk.into();
        rgb.into()
    }
}

impl Display for Hex {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        let (r, g, b, a) = self.rgba;
        if self.rgba.3 != 1.0 {
            write!(f, "#{:02X}{:02X}{:02X}{:02X}", r, g, b, (a * 255.0) as u8)
        } else {
            write!(f, "#{:02X}{:02X}{:02X}", r, g, b)
        }
    }
}

impl Hex {
    /// Returns a Hex string with transparency, where the last two characters represent the transparency in hexadecimal.
    /// ```rust
    /// use easy_color::{RGBA, Hex};
    /// let rgba:RGBA = "rgba(255,125,55, 0.85)".try_into().unwrap();
    /// let hex:Hex = rgba.into();
    /// assert_eq!(hex.to_hex_alpha(), "#FF7D37D8");
    /// assert_eq!(hex.to_string(), "#FF7D37D8"); //Returns a Hex string with transparency, where the last two characters represent the transparency in hexadecimal.
    ///
    /// // when alpha value is 1
    /// let rgba:RGBA = "rgba(255,125,55, 1)".try_into().unwrap();
    /// let hex:Hex = rgba.into();
    /// assert_eq!(hex.to_hex_alpha(), "#FF7D37FF");
    /// assert_eq!(hex.to_string(), "#FF7D37");
    /// ```
    pub fn to_hex_alpha(&self) -> String {
        let (r, g, b, a) = self.rgba;
        format!("#{:02X}{:02X}{:02X}{:02X}", r, g, b, (a * 255.0) as u8)
    }

    /// Returns a Hex string with transparency, where the last two characters represent the transparency in hexadecimal.
    ///
    /// ```rust
    /// use easy_color::{RGBA, Hex};
    /// let rgba:RGBA = "rgba(255,125,55, 0.85)".try_into().unwrap();
    /// let hex:Hex = rgba.into();
    /// assert_eq!(hex.to_alpha_hex(), "#D8FF7D37");
    /// ```
    pub fn to_alpha_hex(&self) -> String {
        let (r, g, b, a) = self.rgba;
        format!("#{:02X}{:02X}{:02X}{:02X}", (a * 255.0) as u8, r, g, b)
    }
}

impl Color for Hex {
    fn is_dark(&self) -> bool {
        let rgb = RGB::from(*self);
        rgb.is_dark()
    }
    fn is_light(&self) -> bool {
        !self.is_dark()
    }
}