deft 0.15.0

Cross platform ui framework
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

use crate::color::parse_hex_color;
use crate::style::PropValueParse;
use cssparser::parse_color_keyword;
use skia_safe::Color;
use std::str::FromStr;

impl PropValueParse for Color {
    fn parse_prop_value(value: &str) -> Option<Self> {
        parse_color(value)
    }
    fn to_style_string(&self) -> String {
        format!(
            "#{:02X}{:02X}{:02X}{:02X}",
            self.r(),
            self.g(),
            self.b(),
            self.a()
        )
    }
}

pub trait ColorHelper {
    fn is_transparent(&self) -> bool;
}

impl ColorHelper for Color {
    fn is_transparent(&self) -> bool {
        self.a() == 0
    }
}

pub fn parse_color_str(value: &str) -> Option<Color> {
    //TODO support white,black and so on
    if let Some(hex) = value.strip_prefix("#") {
        parse_hex_color(hex)
    } else {
        None
    }
}

pub fn parse_optional_color_str(value: Option<&String>) -> Option<Color> {
    if let Some(str) = value {
        parse_color_str(str)
    } else {
        None
    }
}

pub fn parse_color(value: &str) -> Option<Color> {
    if let Some(hex) = value.strip_prefix("#") {
        parse_hex_color(hex)
    } else if let Ok(c) = parse_color_keyword(value) {
        match c {
            cssparser::Color::CurrentColor => None,
            cssparser::Color::RGBA(rgba) => Some(Color::from_argb(
                rgba.alpha, rgba.red, rgba.green, rgba.blue,
            )),
        }
    } else if let Some(rgb) = value.strip_prefix("rgb(") {
        let mut params = rgb.strip_suffix(")")?.split(',').map(|p| p.trim());
        let r = u8::from_str(params.next()?).ok()?;
        let g = u8::from_str(params.next()?).ok()?;
        let b = u8::from_str(params.next()?).ok()?;
        if params.next().is_none() {
            Some(Color::from_rgb(r, g, b))
        } else {
            None
        }
    } else if let Some(rgba) = value.strip_prefix("rgba(") {
        let mut params = rgba.strip_suffix(")")?.split(',').map(|p| p.trim());
        let r = u8::from_str(params.next()?).ok()?;
        let g = u8::from_str(params.next()?).ok()?;
        let b = u8::from_str(params.next()?).ok()?;
        let a = u8::from_str(params.next()?).ok()?;
        if params.next().is_none() {
            Some(Color::from_argb(a, r, g, b))
        } else {
            None
        }
    } else {
        None
    }
}