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
|
/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import tinycolor from 'tinycolor2';
import lightTheme from '@@/themes/_light.json5';
import darkTheme from '@@/themes/_dark.json5';
import type { BundledTheme } from 'shiki/themes';
export type Theme = {
id: string;
name: string;
author: string;
desc?: string;
base?: 'dark' | 'light';
props: Record<string, string>;
codeHighlighter?: {
base: BundledTheme;
overrides?: Record<string, any>;
} | {
base: '_none_';
overrides: Record<string, any>;
};
};
let timeout: number | null = null;
export function assertIsTheme(theme: Record<string, unknown>): theme is Theme {
return typeof theme === 'object' && theme !== null && 'id' in theme && 'name' in theme && 'author' in theme && 'props' in theme;
}
export function applyTheme(theme: Theme, persist = true) {
if (timeout) window.clearTimeout(timeout);
document.documentElement.classList.add('_themeChanging_');
timeout = window.setTimeout(() => {
document.documentElement.classList.remove('_themeChanging_');
}, 1000);
const colorScheme = theme.base === 'dark' ? 'dark' : 'light';
document.documentElement.dataset.colorScheme = colorScheme;
// Deep copy
const _theme = JSON.parse(JSON.stringify(theme));
if (_theme.base) {
const base = [lightTheme, darkTheme].find(x => x.id === _theme.base);
if (base) _theme.props = Object.assign({}, base.props, _theme.props);
}
const props = compile(_theme);
for (const tag of document.head.children) {
if (tag.tagName === 'META' && tag.getAttribute('name') === 'theme-color') {
tag.setAttribute('content', props['htmlThemeColor']);
break;
}
}
for (const [k, v] of Object.entries(props)) {
document.documentElement.style.setProperty(`--MI_THEME-${k}`, v.toString());
}
// iframeを正常に透過させるために、cssのcolor-schemeは `light dark;` 固定にしてある。style.scss参照
}
function compile(theme: Theme): Record<string, string> {
function getColor(val: string): tinycolor.Instance {
if (val[0] === '@') { // ref (prop)
return getColor(theme.props[val.substring(1)]);
} else if (val[0] === '$') { // ref (const)
return getColor(theme.props[val]);
} else if (val[0] === ':') { // func
const parts = val.split('<');
const funcTxt = parts.shift();
const argTxt = parts.shift();
if (funcTxt && argTxt) {
const func = funcTxt.substring(1);
const arg = parseFloat(argTxt);
const color = getColor(parts.join('<'));
switch (func) {
case 'darken': return color.darken(arg);
case 'lighten': return color.lighten(arg);
case 'alpha': return color.setAlpha(arg);
case 'hue': return color.spin(arg);
case 'saturate': return color.saturate(arg);
}
}
}
// other case
return tinycolor(val);
}
const props = {};
for (const [k, v] of Object.entries(theme.props)) {
if (k.startsWith('$')) continue; // ignore const
props[k] = v.startsWith('"') ? v.replace(/^"\s*/, '') : genValue(getColor(v));
}
return props;
}
function genValue(c: tinycolor.Instance): string {
return c.toRgbString();
}
|
