zent/es/utils/tinycolor/format-input.js

一套前端设计语言和基于React的实现

import { convertHexToDecimal, hslToRgb, hsvToRgb, parseIntFromHex, rgbToRgb, } from './conversion';
import { names } from './css-color-names';
import { boundAlpha, convertToPercentage } from './util';
export function inputToRGB(color) {
    var rgb = { r: 0, g: 0, b: 0 };
    var a = 1;
    var s = null;
    var v = null;
    var l = null;
    var ok = false;
    var format = false;
    if (typeof color === 'string') {
        color = stringInputToObject(color);
    }
    if (typeof color === 'object') {
        if (isValidCSSUnit(color.r) &&
            isValidCSSUnit(color.g) &&
            isValidCSSUnit(color.b)) {
            rgb = rgbToRgb(color.r, color.g, color.b);
            ok = true;
            format = String(color.r).substr(-1) === '%' ? 'prgb' : 'rgb';
        }
        else if (isValidCSSUnit(color.h) &&
            isValidCSSUnit(color.s) &&
            isValidCSSUnit(color.v)) {
            s = convertToPercentage(color.s);
            v = convertToPercentage(color.v);
            rgb = hsvToRgb(color.h, s, v);
            ok = true;
            format = 'hsv';
        }
        else if (isValidCSSUnit(color.h) &&
            isValidCSSUnit(color.s) &&
            isValidCSSUnit(color.l)) {
            s = convertToPercentage(color.s);
            l = convertToPercentage(color.l);
            rgb = hslToRgb(color.h, s, l);
            ok = true;
            format = 'hsl';
        }
        if (Object.prototype.hasOwnProperty.call(color, 'a')) {
            a = color.a;
        }
    }
    a = boundAlpha(a);
    return {
        ok: ok,
        format: color.format || format,
        r: Math.min(255, Math.max(rgb.r, 0)),
        g: Math.min(255, Math.max(rgb.g, 0)),
        b: Math.min(255, Math.max(rgb.b, 0)),
        a: a,
    };
}
var CSS_INTEGER = '[-\\+]?\\d+%?';
var CSS_NUMBER = '[-\\+]?\\d*\\.\\d+%?';
var CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";
var PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
var matchers = {
    CSS_UNIT: new RegExp(CSS_UNIT),
    rgb: new RegExp('rgb' + PERMISSIVE_MATCH3),
    rgba: new RegExp('rgba' + PERMISSIVE_MATCH4),
    hsl: new RegExp('hsl' + PERMISSIVE_MATCH3),
    hsla: new RegExp('hsla' + PERMISSIVE_MATCH4),
    hsv: new RegExp('hsv' + PERMISSIVE_MATCH3),
    hsva: new RegExp('hsva' + PERMISSIVE_MATCH4),
    hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
    hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
    hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
    hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
};
function stringInputToObject(color) {
    color = color.trim().toLowerCase();
    if (color.length === 0) {
        return false;
    }
    var named = false;
    if (names[color]) {
        color = names[color];
        named = true;
    }
    else if (color === 'transparent') {
        return { r: 0, g: 0, b: 0, a: 0, format: 'name' };
    }
    var match = matchers.rgb.exec(color);
    if (match) {
        return { r: match[1], g: match[2], b: match[3] };
    }
    match = matchers.rgba.exec(color);
    if (match) {
        return { r: match[1], g: match[2], b: match[3], a: match[4] };
    }
    match = matchers.hsl.exec(color);
    if (match) {
        return { h: match[1], s: match[2], l: match[3] };
    }
    match = matchers.hsla.exec(color);
    if (match) {
        return { h: match[1], s: match[2], l: match[3], a: match[4] };
    }
    match = matchers.hsv.exec(color);
    if (match) {
        return { h: match[1], s: match[2], v: match[3] };
    }
    match = matchers.hsva.exec(color);
    if (match) {
        return { h: match[1], s: match[2], v: match[3], a: match[4] };
    }
    match = matchers.hex8.exec(color);
    if (match) {
        return {
            r: parseIntFromHex(match[1]),
            g: parseIntFromHex(match[2]),
            b: parseIntFromHex(match[3]),
            a: convertHexToDecimal(match[4]),
            format: named ? 'name' : 'hex8',
        };
    }
    match = matchers.hex6.exec(color);
    if (match) {
        return {
            r: parseIntFromHex(match[1]),
            g: parseIntFromHex(match[2]),
            b: parseIntFromHex(match[3]),
            format: named ? 'name' : 'hex',
        };
    }
    match = matchers.hex4.exec(color);
    if (match) {
        return {
            r: parseIntFromHex(match[1] + match[1]),
            g: parseIntFromHex(match[2] + match[2]),
            b: parseIntFromHex(match[3] + match[3]),
            a: convertHexToDecimal(match[4] + match[4]),
            format: named ? 'name' : 'hex8',
        };
    }
    match = matchers.hex3.exec(color);
    if (match) {
        return {
            r: parseIntFromHex(match[1] + match[1]),
            g: parseIntFromHex(match[2] + match[2]),
            b: parseIntFromHex(match[3] + match[3]),
            format: named ? 'name' : 'hex',
        };
    }
    return false;
}
function isValidCSSUnit(color) {
    return Boolean(matchers.CSS_UNIT.exec(String(color)));
}