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import * as tinycolor from 'tinycolor2';
export type Theme = {
id: string;
name: string;
author: string;
desc?: string;
base?: 'dark' | 'light';
vars: { [key: string]: string };
props: { [key: string]: string };
};
export const lightTheme: Theme = require('../theme/light.json5');
export const darkTheme: Theme = require('../theme/dark.json5');
export const pinkTheme: Theme = require('../theme/pink.json5');
export const blackTheme: Theme = require('../theme/black.json5');
export const halloweenTheme: Theme = require('../theme/halloween.json5');
export const cafeTheme: Theme = require('../theme/cafe.json5');
export const japaneseSushiSetTheme: Theme = require('../theme/japanese-sushi-set.json5');
export const gruvboxDarkTheme: Theme = require('../theme/gruvbox-dark.json5');
export const monokaiTheme: Theme = require('../theme/monokai.json5');
export const colorfulTheme: Theme = require('../theme/colorful.json5');
export const rainyTheme: Theme = require('../theme/rainy.json5');
export const mauveTheme: Theme = require('../theme/mauve.json5');
export const grayTheme: Theme = require('../theme/gray.json5');
export const tweetDeckTheme: Theme = require('../theme/tweet-deck.json5');
export const builtinThemes = [
lightTheme,
darkTheme,
pinkTheme,
blackTheme,
halloweenTheme,
cafeTheme,
japaneseSushiSetTheme,
gruvboxDarkTheme,
monokaiTheme,
colorfulTheme,
rainyTheme,
mauveTheme,
grayTheme,
tweetDeckTheme,
];
export function applyTheme(theme: Theme, persisted = true) {
// Deep copy
const _theme = JSON.parse(JSON.stringify(theme));
if (_theme.base) {
const base = [lightTheme, darkTheme].find(x => x.id == _theme.base);
_theme.vars = Object.assign({}, base.vars, _theme.vars);
_theme.props = Object.assign({}, base.props, _theme.props);
}
const props = compile(_theme);
for (const [k, v] of Object.entries(props)) {
document.documentElement.style.setProperty(`--${k}`, v.toString());
}
if (persisted) {
localStorage.setItem('theme', JSON.stringify(props));
}
}
function compile(theme: Theme): { [key: string]: string } {
function getColor(code: string): tinycolor.Instance {
// ref
if (code[0] == '@') {
return getColor(theme.props[code.substr(1)]);
}
if (code[0] == '$') {
return getColor(theme.vars[code.substr(1)]);
}
// func
if (code[0] == ':') {
const parts = code.split('<');
const func = parts.shift().substr(1);
const arg = parseFloat(parts.shift());
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);
}
}
return tinycolor(code);
}
const props = {};
for (const [k, v] of Object.entries(theme.props)) {
props[k] = genValue(getColor(v));
}
const primary = getColor(props['primary']);
for (let i = 1; i < 10; i++) {
const color = primary.clone().setAlpha(i / 10);
props['primaryAlpha0' + i] = genValue(color);
}
for (let i = 5; i < 100; i += 5) {
const color = primary.clone().lighten(i);
props['primaryLighten' + i] = genValue(color);
}
for (let i = 5; i < 100; i += 5) {
const color = primary.clone().darken(i);
props['primaryDarken' + i] = genValue(color);
}
return props;
}
function genValue(c: tinycolor.Instance): string {
return c.toRgbString();
}
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