@wordpress/components
Version:
UI components for WordPress.
114 lines (108 loc) • 4.24 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.checkContrasts = checkContrasts;
exports.generateShades = generateShades;
exports.generateThemeVariables = generateThemeVariables;
var _colord = require("colord");
var _a11y = _interopRequireDefault(require("colord/plugins/a11y"));
var _names = _interopRequireDefault(require("colord/plugins/names"));
var _warning = _interopRequireDefault(require("@wordpress/warning"));
var _utils = require("../utils");
/**
* External dependencies
*/
/**
* WordPress dependencies
*/
/**
* Internal dependencies
*/
(0, _colord.extend)([_names.default, _a11y.default]);
function generateThemeVariables(inputs) {
validateInputs(inputs);
const generatedColors = {
...generateAccentDependentColors(inputs.accent),
...generateBackgroundDependentColors(inputs.background)
};
warnContrastIssues(checkContrasts(inputs, generatedColors));
return {
colors: generatedColors
};
}
function validateInputs(inputs) {
for (const [key, value] of Object.entries(inputs)) {
if (typeof value !== 'undefined' && !(0, _colord.colord)(value).isValid()) {
globalThis.SCRIPT_DEBUG === true ? (0, _warning.default)(`wp.components.Theme: "${value}" is not a valid color value for the '${key}' prop.`) : void 0;
}
}
}
function checkContrasts(inputs, outputs) {
const background = inputs.background || _utils.COLORS.white;
const accent = inputs.accent || '#3858e9';
const foreground = outputs.foreground || _utils.COLORS.gray[900];
const gray = outputs.gray || _utils.COLORS.gray;
return {
accent: (0, _colord.colord)(background).isReadable(accent) ? undefined : `The background color ("${background}") does not have sufficient contrast against the accent color ("${accent}").`,
foreground: (0, _colord.colord)(background).isReadable(foreground) ? undefined : `The background color provided ("${background}") does not have sufficient contrast against the standard foreground colors.`,
grays: (0, _colord.colord)(background).contrast(gray[600]) >= 3 && (0, _colord.colord)(background).contrast(gray[700]) >= 4.5 ? undefined : `The background color provided ("${background}") cannot generate a set of grayscale foreground colors with sufficient contrast. Try adjusting the color to be lighter or darker.`
};
}
function warnContrastIssues(issues) {
for (const error of Object.values(issues)) {
if (error) {
globalThis.SCRIPT_DEBUG === true ? (0, _warning.default)('wp.components.Theme: ' + error) : void 0;
}
}
}
function generateAccentDependentColors(accent) {
if (!accent) {
return {};
}
return {
accent,
accentDarker10: (0, _colord.colord)(accent).darken(0.1).toHex(),
accentDarker20: (0, _colord.colord)(accent).darken(0.2).toHex(),
accentInverted: getForegroundForColor(accent)
};
}
function generateBackgroundDependentColors(background) {
if (!background) {
return {};
}
const foreground = getForegroundForColor(background);
return {
background,
foreground,
foregroundInverted: getForegroundForColor(foreground),
gray: generateShades(background, foreground)
};
}
function getForegroundForColor(color) {
return (0, _colord.colord)(color).isDark() ? _utils.COLORS.white : _utils.COLORS.gray[900];
}
function generateShades(background, foreground) {
// How much darkness you need to add to #fff to get the COLORS.gray[n] color
const SHADES = {
100: 0.06,
200: 0.121,
300: 0.132,
400: 0.2,
600: 0.42,
700: 0.543,
800: 0.821
};
// Darkness of COLORS.gray[ 900 ], relative to #fff
const limit = 0.884;
const direction = (0, _colord.colord)(background).isDark() ? 'lighten' : 'darken';
// Lightness delta between the background and foreground colors
const range = Math.abs((0, _colord.colord)(background).toHsl().l - (0, _colord.colord)(foreground).toHsl().l) / 100;
const result = {};
Object.entries(SHADES).forEach(([key, value]) => {
result[parseInt(key)] = (0, _colord.colord)(background)[direction](value / limit * range).toHex();
});
return result;
}
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