colorjs.io/dist/color.cjs.min.js

Color space agnostic color manipulation library

"use strict";function t(t,e){let r=t.length;Array.isArray(t[0])||(t=[t]),Array.isArray(e[0])||(e=e.map(t=>[t]));let s=e[0].length,a=e[0].map((t,r)=>e.map(t=>t[r])),o=t.map(t=>a.map(e=>Array.isArray(t)?t.reduce((t,r,s)=>t+r*(e[s]||0),0):e.reduce((e,r)=>e+r*t,0)));return 1===r&&(o=o[0]),1===s?o.map(t=>t[0]):o}function e(t){return"string"===r(t)}function r(t){return(Object.prototype.toString.call(t).match(/^\[object\s+(.*?)\]$/)[1]||"").toLowerCase()}function s(t,...e){for(let r of e)if(r){let e=Object.getOwnPropertyDescriptors(r);Object.defineProperties(t,e)}return t}function a(t,e,r){let s=Object.getOwnPropertyDescriptor(e,r);Object.defineProperty(t,r,s)}function o(t,e,r=[0,1]){e=+e;let s=((r[1]||r[0]||1)+"").length,a=Math.max(0,e+1-s);return+t.toFixed(a)}function i(t){if(t.indexOf(".")>0){let[e,r]=t.split("."),s=Color.space(e);if(!(r in s.coords))throw new ReferenceError(`Color space "${s.name}" has no "${r}" coordinate.`);return[s,r]}}function n(t,e,r){let s=e.split("."),a=s.pop();if(t=s.reduceRight((t,e)=>t&&t[e],t))return void 0===r?t[a]:t[a]=r}Object.defineProperty(exports,"__esModule",{value:!0});var c=Object.freeze({__proto__:null,isString:e,type:r,extend:s,copyDescriptor:a,capitalize:function(t){return t?t[0].toUpperCase()+t.slice(1):t},toPrecision:o,parseCoord:i,value:n,multiplyMatrices:t});const h="undefined"!=typeof document;class l{constructor(...t){let r,s;if(t[0]&&"object"==typeof t[0]&&(t[0].space||t[0].spaceId)&&t[0].coords)s=t[0];else if(e(t[0])){if(h&&0===t[0].indexOf("--")){let t=arguments[1]&&1===arguments[1].nodeType?arguments[1]:document.documentElement;r=getComputedStyle(t).getPropertyValue(arguments[0])}else 1===t.length&&(r=t[0]);r&&(s=l.parse(r))}if(s)"spaceId"in s?this.spaceId=s.spaceId:this.space=s.space,this.coords=s.coords.slice(),this.alpha=s.alpha;else{let e,r,s;Array.isArray(t[0])?[e,r,s]=["sRGB",...t]:[e,r,s]=t,this.spaceId=e||"sRGB",this.coords=r?r.slice():[0,0,0],this.alpha=s}this.alpha=this.alpha<1?this.alpha:1;for(let t=0;t<this.coords.length;t++)"NaN"===this.coords[t]&&(this.coords[t]=NaN)}get space(){return l.spaces[this.spaceId]}set space(t){return this.spaceId=t}get spaceId(){return this._spaceId}set spaceId(t){let e=l.space(t);if(t=e.id,this.space&&e&&this.space!==e){this.coords=this[t];for(let t in this.space.instance)this.hasOwnProperty(t)&&delete this[t]}this._spaceId=t,s(this,this.space.instance)}get white(){return this.space.white||l.whites.D50}set(t,e){if(1===arguments.length&&"object"===r(arguments[0])){let t=arguments[0];for(let e in t)this.set(e,t[e])}else if("function"==typeof e){let r=n(this,t);n(this,t,e.call(this,r))}else n(this,t,e);return this}lighten(t=.25){let e=new l(this),r=e.lightness;return e.lightness=r*(1+t),e}darken(t=.25){let e=new l(this),r=e.lightness;return e.lightness=r*(1-t),e}distance(t,e="lab"){t=l.get(t);let r=this[(e=l.space(e)).id],s=t[e.id];return Math.sqrt(r.reduce((t,e,r)=>isNaN(e)||isNaN(s[r])?t:t+(s[r]-e)**2,0))}deltaE(t,r={}){e(r)&&(r={method:r});let{method:s=l.defaults.deltaE,...a}=r;return t=l.get(t),this["deltaE"+s]?this["deltaE"+s](t,a):this.deltaE76(t)}deltaE76(t){return this.distance(t,"lab")}get luminance(){return this.xyz.Y}set luminance(t){this.xyz.Y=t}contrast(t){t=l.get(t);let e=this.luminance,r=t.luminance;return r>e&&([e,r]=[r,e]),(e+.05)/(r+.05)}get uv(){let[t,e,r]=this.xyz,s=t+15*e+3*r;return[4*t/s,9*e/s]}get xy(){let[t,e,r]=this.xyz,s=t+e+r;return[t/s,e/s]}getCoords({inGamut:t,precision:e=l.defaults.precision}={}){let r=this.coords;if(t&&!this.inGamut()&&(r=this.toGamut(!0===t?void 0:t).coords),null!=e){let t=this.space.coords?Object.values(this.space.coords):[];r=r.map((r,s)=>o(r,e,t[s]))}return r}inGamut(t=this.space,e){return t=l.space(t),l.inGamut(t,this[t.id],e)}static inGamut(t,e,{epsilon:r=75e-6}={}){if((t=l.space(t)).inGamut)return t.inGamut(e);{if(!t.coords)return!0;let s=Object.values(t.coords);return e.every((t,e)=>{if(Number.isNaN(t))return!0;let[a,o]=s[e];return(void 0===a||t>=a-r)&&(void 0===o||t<=o+r)})}}toGamut({method:t=l.defaults.gamutMapping,space:r=this.space,inPlace:s}={}){if(e(arguments[0])&&(r=arguments[0]),r=l.space(r),this.inGamut(r,{epsilon:0}))return this;let a=this.to(r);if(t.indexOf(".")>0&&!this.inGamut(r)){let e=a.toGamut({method:"clip",space:r}),s=this.deltaE(e,{method:"2000"});if(this.deltaE(e,{method:"2000"})>2.3){let[e,o]=i(t),n=a.to(e),c=.001,h=e.coords[o][0],l=n[o],p=a.deltaE(n,{method:"2000"});for(;l-h>c&&p<s;){let t=n.toGamut({space:r,method:"clip"}),e=n.deltaE(t,{method:"2000"});if(p=a.deltaE(n,{method:"2000"}),e-2<c)h=n[o];else{if(Math.abs(e-2)<c)break;l=n[o]}n[o]=(l+h)/2}a=n.to(r)}else a=e}if("clip"===t||!a.inGamut(r,{epsilon:0})){let t=Object.values(r.coords);a.coords=a.coords.map((e,r)=>{let[s,a]=t[r];return void 0!==s&&(e=Math.max(s,e)),void 0!==a&&(e=Math.min(e,a)),e})}return r.id!==this.spaceId&&(a=a.to(this.space)),s?(this.coords=a.coords,this):a}clone(){return new l(this.spaceId,this.coords,this.alpha)}to(t,{inGamut:e}={}){let r=(t=l.space(t)).id,s=new l(r,this[r],this.alpha);return e&&s.toGamut({inPlace:!0}),s}toJSON(){return{spaceId:this.spaceId,coords:this.coords,alpha:this.alpha}}toString({precision:t=l.defaults.precision,format:r,commas:s,inGamut:a,name:o="color",fallback:i}={}){let n=this.alpha<1?` ${s?",":"/"} ${this.alpha}`:"",c=this.getCoords({inGamut:a,precision:t});if(c=c.map(t=>t||0),e(r)&&"%"===r){let e=t;(!Number.isInteger(t)||t>21)&&(e=21),r=t=>t.toLocaleString("en-US",{style:"percent",maximumSignificantDigits:e})}"function"==typeof r&&(c=c.map(r));let p=[...c];"color"===o&&p.unshift(this.space?this.space.cssId||this.space.id:"XYZ");let u=`${o}(${p.join(s?", ":" ")}${n})`;if(i){if(!h||!self.CSS||CSS.supports("color",u))return u=new String(u),u.color=this,u;let e=Array.isArray(i)?i.slice():l.defaults.fallbackSpaces;for(let r,s=0;r=e[s];s++)if(l.spaces[r]){let a=this.to(r);if(u=a.toString({precision:t}),CSS.supports("color",u))return u=new String(u),u.color=a,u;e===l.defaults.fallbackSpaces&&(e.splice(s,1),s--)}let r=this.to("srgb");u=new String(r.toString({commas:!0})),u.color=r}return u}equals(t){return t=l.get(t),this.spaceId===t.spaceId&&this.alpha===t.alpha&&this.coords.every((e,r)=>e===t.coords[r])}static chromaticAdaptation(e,r,s,a={}){if((e=e||l.whites.D50)===(r=r||l.whites.D50))return s;let o={W1:e,W2:r,XYZ:s,options:a};if(l.hooks.run("chromatic-adaptation-start",o),o.M||(o.W1===l.whites.D65&&o.W2===l.whites.D50?o.M=[[1.0478112,.0228866,-.050127],[.0295424,.9904844,-.0170491],[-.0092345,.0150436,.7521316]]:o.W1===l.whites.D50&&o.W2===l.whites.D65&&(o.M=[[.9555766,-.0230393,.0631636],[-.0282895,1.0099416,.0210077],[.0122982,-.020483,1.3299098]])),l.hooks.run("chromatic-adaptation-end",o),o.M)return t(o.M,o.XYZ);throw new TypeError("Only Bradford CAT with white points D50 and D65 supported for now.")}static parse(t){let e={str:t};if(l.hooks.run("parse-start",e),e.color)return e.color;if(e.parsed=l.parseFunction(e.str),l.hooks.run("parse-function-start",e),e.color)return e.color;for(let t of Object.values(l.spaces))if(t.parse){let r=t.parse(e.str,e.parsed);if(r)return r}let r=e.parsed&&e.parsed.name;if(!/^color|^rgb/.test(r)&&h&&document.head){let s=document.head.style.color;if(document.head.style.color="",document.head.style.color=t,document.head.style.color!==s){let a=getComputedStyle(document.head).color;document.head.style.color=s,a&&(t=a,e.parsed=l.parseFunction(a),r=e.parsed.name)}}if(e.parsed){if("rgb"===r||"rgba"===r){let t=e.parsed.args.map((t,e)=>e<3&&!t.percentage?t/255:+t);return{spaceId:"srgb",coords:t.slice(0,3),alpha:t[3]}}if("color"===r){let t=e.parsed.args.shift().toLowerCase(),r=Object.values(l.spaces).find(e=>(e.cssId||e.id)===t);if(r){let t=Object.keys(r.coords).length,s=e.parsed.rawArgs.indexOf("/")>0?e.parsed.args.pop():1,a=Array(t).fill(0);return a.forEach((t,r)=>a[r]=e.parsed.args[r]||0),{spaceId:r.id,coords:a,alpha:s}}throw new TypeError(`Color space ${t} not found. Missing a plugin?`)}}throw new TypeError(`Could not parse ${t} as a color. Missing a plugin?`)}static parseFunction(t){if(!t)return;t=t.trim();const e=/^-?[\d.]+$/;let r=t.match(/^([a-z]+)\((.+?)\)$/i);if(r){let t=r[2].match(/([-\w.]+(?:%|deg)?)/g);return t=t.map(t=>{if(/%$/.test(t)){let e=new Number(+t.slice(0,-1)/100);return e.percentage=!0,e}if(/deg$/.test(t)){let e=new Number(+t.slice(0,-3));return e.deg=!0,e}return e.test(t)?+t:t}),{name:r[1].toLowerCase(),rawName:r[1],rawArgs:r[2],args:t}}}static convert(t,e,r){if((e=l.space(e))===(r=l.space(r)))return t;t=t.map(t=>Number.isNaN(t)?0:t);let s=e.id,a=r.id;if(r.from&&r.from[s])return r.from[s](t);if(e.to&&e.to[a])return e.to[a](t);let o=e.toXYZ(t);return r.white!==e.white&&(o=l.chromaticAdaptation(e.white,r.white,o)),r.fromXYZ(o)}static get(t,...e){return t instanceof l?t:new l(t,...e)}static space(t){let e=r(t);if("string"===e){let e=l.spaces[t.toLowerCase()];if(!e)throw new TypeError(`No color space found with id = "${t}"`);return e}if(t&&"object"===e)return t;throw new TypeError(t+" is not a valid color space")}static defineSpace({id:t,inherits:e}){let r=l.spaces[t]=arguments[0];if(e){const t=["id","parse","instance","properties"];let s=l.spaces[e];for(let e in s)t.includes(e)||e in r||a(r,s,e)}let o=r.coords;if(r.properties&&s(l.prototype,r.properties),!r.fromXYZ&&!r.toXYZ){let t;if(r.from&&r.to){let e=new Set(Object.keys(r.from)),s=new Set(Object.keys(r.to)),a=[...e].filter(t=>{if(s.has(t)){let e=l.spaces[t];return e&&e.fromXYZ&&e.toXYZ}});a.length>0&&(t=l.spaces[a[0]])}if(!t)throw new ReferenceError(`No connection space found for ${r.name}.`);Object.assign(r,{fromXYZ(e){let r=t.fromXYZ(e);return this.from[t.id](r)},toXYZ(e){let r=this.to[t.id](e);return t.toXYZ(r)}})}let i=Object.keys(o);return Object.defineProperty(l.prototype,t,{get(){let e=l.convert(this.coords,this.spaceId,t);return self.Proxy?new Proxy(e,{has:(t,e)=>i.includes(e)||Reflect.has(t,e),get:(t,e,r)=>{let s=i.indexOf(e);return s>-1?t[s]:Reflect.get(t,e,r)},set:(e,r,s,a)=>{let o=i.indexOf(r);return r>-1&&(o=r),o>-1?(e[o]=s,this.coords=l.convert(e,t,this.spaceId),!0):Reflect.set(e,r,s,a)}}):e},set(e){this.coords=l.convert(e,t,this.spaceId)},configurable:!0,enumerable:!0}),r}static defineShortcut(t,e=l.prototype,r){r&&(l.shortcuts[t]=r),Object.defineProperty(e,t,{get(){return n(this,l.shortcuts[t])},set(e){return n(this,l.shortcuts[t],e)},configurable:!0,enumerable:!0})}static statify(t=[]){t=t||Object.getOwnPropertyNames(l.prototype);for(let t of Object.getOwnPropertyNames(l.prototype)){let e=Object.getOwnPropertyDescriptor(l.prototype,t);e.get||e.set||"function"!=typeof e.value||t in l||(l[t]=function(e,...r){return(e=l.get(e))[t](...r)})}}}Object.assign(l,{util:c,hooks:new class{add(t,e,r){if("string"==typeof arguments[0])(Array.isArray(t)?t:[t]).forEach((function(t){this[t]=this[t]||[],e&&this[t][r?"unshift":"push"](e)}),this);else for(var t in arguments[0])this.add(t,arguments[0][t],arguments[1])}run(t,e){this[t]=this[t]||[],this[t].forEach((function(t){t.call(e&&e.context?e.context:e,e)}))}},whites:{D50:[.96422,1,.82521],D65:[.95047,1,1.08883]},spaces:{},shortcuts:{lightness:"lch.lightness",chroma:"lch.chroma",hue:"lch.hue"},defaults:{gamutMapping:"lch.chroma",precision:5,deltaE:"76",fallbackSpaces:["p3","srgb"]}}),l.defineSpace({id:"xyz",name:"XYZ",coords:{X:[],Y:[],Z:[]},white:l.whites.D50,inGamut:t=>!0,toXYZ:t=>t,fromXYZ:t=>t});for(let t in l.shortcuts)l.defineShortcut(t);l.statify(),l.defineSpace({id:"lab",name:"Lab",coords:{L:[0,100],a:[-100,100],b:[-100,100]},inGamut:t=>!0,white:l.whites.D50,"ε":216/24389,"κ":24389/27,fromXYZ(t){const{"κ":e,"ε":r,white:s}=this;let a=t.map((t,e)=>t/s[e]).map(t=>t>r?Math.cbrt(t):(e*t+16)/116);return[116*a[1]-16,500*(a[0]-a[1]),200*(a[1]-a[2])]},toXYZ(t){const{"κ":e,"ε":r,white:s}=this;let a=[];return a[1]=(t[0]+16)/116,a[0]=t[1]/500+a[1],a[2]=a[1]-t[2]/200,[Math.pow(a[0],3)>r?Math.pow(a[0],3):(116*a[0]-16)/e,t[0]>e*r?Math.pow((t[0]+16)/116,3):t[0]/e,Math.pow(a[2],3)>r?Math.pow(a[2],3):(116*a[2]-16)/e].map((t,e)=>t*s[e])},parse(t,e=l.parseFunction(t)){if(e&&"lab"===e.name){let t=e.args[0];return t.percentage&&(e.args[0]=100*t),{spaceId:"lab",coords:e.args.slice(0,3),alpha:e.args.slice(3)[0]}}},instance:{toString({format:t,...e}={}){return t||(t=(t,e)=>0===e?t+"%":t),l.prototype.toString.call(this,{name:"lab",format:t,...e})}}});const p=[0,360];function u(t){return(t%360+360)%360}p.isAngle=!0,l.defineSpace({id:"lch",name:"LCH",coords:{lightness:[0,100],chroma:[0,150],hue:p},inGamut:t=>!0,white:l.whites.D50,from:{lab(t){let e,[r,s,a]=t;const o=5e-4;return e=Math.abs(s)<o&&Math.abs(a)<o?NaN:180*Math.atan2(a,s)/Math.PI,[r,Math.sqrt(s**2+a**2),u(e)]}},to:{lab(t){let[e,r,s]=t;return r<0&&(r=0),isNaN(s)&&(s=0),[e,r*Math.cos(s*Math.PI/180),r*Math.sin(s*Math.PI/180)]}},parse(t,e=l.parseFunction(t)){if(e&&"lch"===e.name){let t=e.args[0];return t.percentage&&(e.args[0]=100*t),{spaceId:"lch",coords:e.args.slice(0,3),alpha:e.args.slice(3)[0]}}},instance:{toString({format:t,...e}={}){return t||(t=(t,e)=>0===e?t+"%":t),l.prototype.toString.call(this,{name:"lch",format:t,...e})}}}),l.defineSpace({id:"srgb",name:"sRGB",coords:{red:[0,1],green:[0,1],blue:[0,1]},white:l.whites.D65,toLinear:t=>t.map((function(t){return t<.04045?t/12.92:Math.pow((t+.055)/1.055,2.4)})),toGamma:t=>t.map((function(t){return t>.0031308?1.055*Math.pow(t,1/2.4)-.055:12.92*t})),toXYZ_M:[[.4124564,.3575761,.1804375],[.2126729,.7151522,.072175],[.0193339,.119192,.9503041]],fromXYZ_M:[[3.2404542,-1.5371385,-.4985314],[-.969266,1.8760108,.041556],[.0556434,-.2040259,1.0572252]],toXYZ(e){return e=this.toLinear(e),t(this.toXYZ_M,e)},fromXYZ(e){return this.toGamma(t(this.fromXYZ_M,e))},properties:{toHex({alpha:t=!0,collapse:e=!0}={}){let r=this.to("srgb",{inGamut:!0}).coords;this.alpha<1&&t&&r.push(this.alpha),r=r.map(t=>Math.round(255*t));let s=e&&r.every(t=>t%17==0);return"#"+r.map(t=>s?(t/17).toString(16):t.toString(16).padStart(2,"0")).join("")},get hex(){return this.toHex()}},instance:{toString({inGamut:t=!0,commas:e,format:r="%",...s}={}){if(255===r)r=t=>255*t;else if("hex"===r)return this.toHex(arguments[0]);return l.prototype.toString.call(this,{inGamut:t,commas:e,format:r,name:"rgb"+(e&&this.alpha<1?"a":""),...s})}},parseHex(t){t.length<=5&&(t=t.replace(/[a-f0-9]/gi,"$&$&"));let e=[];return t.replace(/[a-f0-9]{2}/gi,t=>{e.push(parseInt(t,16)/255)}),{spaceId:"srgb",coords:e.slice(0,3),alpha:e.slice(3)[0]}}}),l.hooks.add("parse-start",t=>{let e=t.str;/^#([a-f0-9]{3,4}){1,2}$/i.test(e)&&(t.color=l.spaces.srgb.parseHex(e))}),l.defineSpace({id:"hsl",name:"HSL",coords:{hue:p,saturation:[0,100],lightness:[0,100]},inGamut(t){let 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