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
|
/**
* Convert hex color to rgb array
*
* @param hex string
* @returns array|null
*/
export const hexToRgb = (hex) => {
// Expand shorthand form (e.g. "03F") to full form (e.g. "0033FF")
const shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
const fullHex = hex.replace(shorthandRegex, (_m, r, g, b) => r + r + g + g + b + b);
const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(fullHex);
return result
? [parseInt(result[1], 16), parseInt(result[2], 16), parseInt(result[3], 16)]
: null;
};
export const textColorForBackground = (backgroundColor) => {
const [r, g, b] = hexToRgb(backgroundColor);
if (r + g + b > 500) {
return '#333333';
}
return '#FFFFFF';
};
/**
* Check whether a color matches the expected hex format
*
* This matches any hex (0-9 and A-F) value which is either 3 or 6 characters in length
*
* An empty string will return `null` which means that this is neither valid nor invalid.
* This is useful for forms resetting the validation state
*
* @param color string = ''
*
* @returns {null|boolean}
*/
export const validateHexColor = (color = '') => {
if (!color) {
return null;
}
return /^#([0-9A-F]{3}){1,2}$/i.test(color);
};
export function darkModeEnabled() {
const ideDarkThemes = ['dark', 'solarized-dark', 'monokai'];
// eslint-disable-next-line @gitlab/require-i18n-strings
const isWebIde = document.body.dataset.page.startsWith('ide:');
if (isWebIde) {
return ideDarkThemes.includes(window.gon?.user_color_scheme);
}
return document.body.classList.contains('gl-dark');
}
|
