@wordpress/components
Version:
UI components for WordPress.
81 lines (76 loc) • 2.19 kB
JavaScript
/**
* External dependencies
*/
import tinycolor from 'tinycolor2';
/**
* Object representation for a color.
*
* @typedef {Object} RGBColor
* @property {number} r Red component of the color in the range [0,1].
* @property {number} g Green component of the color in the range [0,1].
* @property {number} b Blue component of the color in the range [0,1].
*/
/**
* Calculate the brightest and darkest values from a color palette.
*
* @param {Object[]} palette Color palette for the theme.
*
* @return {string[]} Tuple of the darkest color and brightest color.
*/
export function getDefaultColors(palette) {
// A default dark and light color are required.
if (!palette || palette.length < 2) return ['#000', '#fff'];
return palette.map(({
color
}) => ({
color,
brightness: tinycolor(color).getBrightness() / 255
})).reduce(([min, max], current) => {
return [current.brightness <= min.brightness ? current : min, current.brightness >= max.brightness ? current : max];
}, [{
brightness: 1
}, {
brightness: 0
}]).map(({
color
}) => color);
}
/**
* Generate a duotone gradient from a list of colors.
*
* @param {string[]} colors CSS color strings.
* @param {string} angle CSS gradient angle.
*
* @return {string} CSS gradient string for the duotone swatch.
*/
export function getGradientFromCSSColors(colors = [], angle = '90deg') {
const l = 100 / colors.length;
const stops = colors.map((c, i) => `${c} ${i * l}%, ${c} ${(i + 1) * l}%`).join(', ');
return `linear-gradient( ${angle}, ${stops} )`;
}
/**
* Convert a color array to an array of color stops.
*
* @param {string[]} colors CSS colors array
*
* @return {Object[]} Color stop information.
*/
export function getColorStopsFromColors(colors) {
return colors.map((color, i) => ({
position: i * 100 / (colors.length - 1),
color
}));
}
/**
* Convert a color stop array to an array colors.
*
* @param {Object[]} colorStops Color stop information.
*
* @return {string[]} CSS colors array.
*/
export function getColorsFromColorStops(colorStops = []) {
return colorStops.map(({
color
}) => color);
}
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