xel/xel.js

Xel - Widget Toolkit

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s.color;s.parsed=function(t){if(!t)return;t=t.trim();let e=t.match(_t.function);if(e){let t=[],i=[],s=!1,n=e[1].toLowerCase(),a=e[2].replace(_t.singleArgument,(e,a)=>{let{value:o,meta:r}=function(t){let e={},i=t.match(_t.unitValue)?.[0],s=e.raw=t;i?(e.type="%"===i?"<percentage>":"<angle>",e.unit=i,e.unitless=Number(s.slice(0,-i.length)),s=e.unitless*Ft[i]):_t.number.test(s)?(s=Number(s),e.type="<number>"):"none"===s?s=null:"NaN"===s||"calc(NaN)"===s?(s=NaN,e.type="<number>"):e.type="<ident>";return{value:s,meta:e}}(a);return(e.startsWith("/")||"color"!==n&&3===t.length)&&(s=!0),t.push(o),i.push(r),""});return{name:n,args:t,argMeta:i,lastAlpha:s,commas:a.includes(","),rawName:e[1],rawArgs:e[2]}}}(s.str);let n=s.options?s.options.parseMeta??s.options.meta:null;if(s.parsed){let e,a,o=s.parsed.name,r=s.parsed.args,l=r.map((t,e)=>s.parsed.argMeta[e]?.type);if("color"===o){let i=r.shift();l.shift();let n=i.startsWith("--")?i.substring(2):`--${i}`,h=[i,n];if(e=Ut.findFormat({name:o,id:h,type:"function"}),!e){let e,a=i in Ut.registry?i:n;if(a in Ut.registry){let s=Ut.registry[a].formats?.color?.id;if(s){e=`Did you mean ${t.replace("color("+i,"color("+s)}?`}}throw new TypeError(`Cannot parse ${s.str}. `+(e??"Missing a plugin?"))}a=e.space,e.id.startsWith("--")&&!i.startsWith("--")&&Xt.warn(`${a.name} is a non-standard space and not currently supported in the CSS spec. Use prefixed color(${e.id}) instead of color(${i}).`),i.startsWith("--")&&!e.id.startsWith("--")&&Xt.warn(`${a.name} is a standard space and supported in the CSS spec. Use color(${e.id}) instead of prefixed color(${i}).`)}else e=Ut.findFormat({name:o,type:"function"}),a=e.space;n&&Object.assign(n,{format:e,formatId:e.name,types:l,commas:s.parsed.commas});let h=1;s.parsed.lastAlpha&&(h=s.parsed.args.pop(),n&&(n.alphaType=l.pop()));let d=e.coords.length;if(r.length!==d)throw new TypeError(`Expected ${d} coordinates for ${a.id} in ${s.str}), got ${r.length}`);r=e.coerceCoords(r,l),i={spaceId:a.id,coords:r,alpha:h}}else t:for(let t of Ut.all)for(let e in t.formats){let a=t.formats[e];if("custom"!==a.type)continue;if(a.test&&!a.test(s.str))continue;let o=t.getFormat(a),r=o.parse(s.str);if(r){n&&Object.assign(n,{format:o,formatId:e}),i=r;break t}}if(!i)throw new TypeError(`Could not parse ${t} as a color. Missing a plugin?`);return i.alpha=zt(i.alpha)?i.alpha:void 0===i.alpha?1:Lt(0,i.alpha,1),i}const Ft={"%":.01,deg:1,grad:.9,rad:180/Math.PI,turn:360},_t={function:/^([a-z]+)\(((?:calc\(NaN\)|.)+?)\)$/i,number:/^([-+]?(?:[0-9]*\.)?[0-9]+(e[-+]?[0-9]+)?)$/i,unitValue:RegExp(`(${Object.keys(Ft).join("|")})$`),singleArgument:/\/?\s*(none|NaN|calc\(NaN\)|[-+\w.]+(?:%|deg|g?rad|turn)?)/g};function Zt(t,e){if(Array.isArray(t))return t.map(t=>Zt(t,e));if(!t)throw new TypeError("Empty color reference");yt(t)&&(t=Gt(t,e));let i=t.space||t.spaceId;return"string"==typeof i&&(t.space=Ut.get(i)),void 0===t.alpha&&(t.alpha=1),t}class Ut{constructor(t){this.id=t.id,this.name=t.name,this.base=t.base?Ut.get(t.base):null,this.aliases=t.aliases,this.base&&(this.fromBase=t.fromBase,this.toBase=t.toBase);let e=t.coords??this.base.coords;for(let t in e)"name"in e[t]||(e[t].name=t);this.coords=e;let i=t.white??this.base.white??"D65";this.white=Ht(i),this.formats=t.formats??{};for(let t in this.formats){let e=this.formats[t];e.type||="function",e.name||=t}this.formats.color?.id||(this.formats.color={...this.formats.color??{},id:t.cssId||this.id}),t.gamutSpace?this.gamutSpace="self"===t.gamutSpace?this:Ut.get(t.gamutSpace):this.isPolar?this.gamutSpace=this.base:this.gamutSpace=this,this.gamutSpace.isUnbounded&&(this.inGamut=(t,e)=>!0),this.referred=t.referred,Object.defineProperty(this,"path",{value:Yt(this).reverse(),writable:!1,enumerable:!0,configurable:!0}),It.run("colorspace-init-end",this)}inGamut(t,{epsilon:e=75e-6}={}){if(!this.equals(this.gamutSpace))return t=this.to(this.gamutSpace,t),this.gamutSpace.inGamut(t,{epsilon:e});let i=Object.values(this.coords);return t.every((t,s)=>{let n=i[s];if("angle"!==n.type&&n.range){if(zt(t))return!0;let[i,s]=n.range;return(void 0===i||t>=i-e)&&(void 0===s||t<=s+e)}return!0})}get isUnbounded(){return Object.values(this.coords).every(t=>!("range"in t))}get cssId(){return this.formats?.color?.id||this.id}get isPolar(){for(let t in this.coords)if("angle"===this.coords[t].type)return!0;return!1}getFormat(t){if(!t)return null;"default"===t?t=Object.values(this.formats)[0]:"string"==typeof t&&(t=this.formats[t]);let e=Ot.get(t,this);return e!==t&&t.name in this.formats&&(this.formats[t.name]=e),e}equals(t){return!!t&&(this===t||this.id===t||this.id===t.id)}to(t,e){if(1===arguments.length){const i=Zt(t);[t,e]=[i.space,i.coords]}if(t=Ut.get(t),this.equals(t))return e;e=e.map(t=>zt(t)?0:t);let i,s,n=this.path,a=t.path;for(let t=0;t<n.length&&n[t].equals(a[t]);t++)i=n[t],s=t;if(!i)throw new Error(`Cannot convert between color spaces ${this} and ${t}: no connection space was found`);for(let t=n.length-1;t>s;t--)e=n[t].toBase(e);for(let t=s+1;t<a.length;t++)e=a[t].fromBase(e);return e}from(t,e){if(1===arguments.length){const i=Zt(t);[t,e]=[i.space,i.coords]}return(t=Ut.get(t)).to(this,e)}toString(){return`${this.name} (${this.id})`}getMinCoords(){let t=[];for(let e in this.coords){let i=this.coords[e],s=i.range||i.refRange;t.push(s?.min??0)}return t}static registry={};static get all(){return[...new Set(Object.values(Ut.registry))]}static register(t,e){if(1===arguments.length&&(t=(e=arguments[0]).id),e=this.get(e),this.registry[t]&&this.registry[t]!==e)throw new Error(`Duplicate color space registration: '${t}'`);if(this.registry[t]=e,1===arguments.length&&e.aliases)for(let t of e.aliases)this.register(t,e);return e}static get(t,...e){if(!t||Rt(t,this))return t;if("string"===kt(t)){let e=Ut.registry[t.toLowerCase()];if(!e)throw new TypeError(`No color space found with id = "${t}"`);return e}if(e.length)return Ut.get(...e);throw new TypeError(`${t} is not a valid color space`)}static findFormat(t,e=Ut.all){if(!t)return null;"string"==typeof t&&(t={name:t});for(let i of e)for(let[e,s]of Object.entries(i.formats)){s.name??=e,s.type??="function";let n=!(t.name&&s.name!==t.name||t.type&&s.type!==t.type);if(t.id){let e=s.ids||[s.id],i=Array.isArray(t.id)?t.id:[t.id];n&&=i.some(t=>e.includes(t))}if(n){let t=Ot.get(s,i);return t!==s&&(i.formats[s.name]=t),t}}return null}static resolveCoord(t,e){let i,s,n=kt(t);if("string"===n?t.includes(".")?[i,s]=t.split("."):[i,s]=[,t]:Array.isArray(t)?[i,s]=t:(i=t.space,s=t.coordId),i=Ut.get(i),i||(i=e),!i)throw new TypeError(`Cannot resolve coordinate reference ${t}: No color space specified and relative references are not allowed here`);if(n=kt(s),"number"===n||"string"===n&&s>=0){let t=Object.entries(i.coords)[s];if(t)return{space:i,id:t[0],index:s,...t[1]}}i=Ut.get(i);let a=s.toLowerCase(),o=0;for(let t in i.coords){let e=i.coords[t];if(t.toLowerCase()===a||e.name?.toLowerCase()===a)return{space:i,id:t,index:o,...e};o++}throw new TypeError(`No "${s}" coordinate found in ${i.name}. 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n[1]=(e+16)/116,n[0]=i/500+n[1],n[2]=n[1]-s/200,[n[0]>Kt?Math.pow(n[0],3):(116*n[0]-16)/Jt,t[0]>8?Math.pow((t[0]+16)/116,3):t[0]/Jt,n[2]>Kt?Math.pow(n[2],3):(116*n[2]-16)/Jt].map((t,e)=>t*Qt[e])},formats:{lab:{coords:["<percentage> | <number>","<number> | <percentage>","<number> | <percentage>"]}}});function ee(t){return"number"!=typeof t?t:(t%360+360)%360}var ie=new Ut({id:"lch",name:"LCH",coords:{l:{refRange:[0,100],name:"Lightness"},c:{refRange:[0,150],name:"Chroma"},h:{refRange:[0,360],type:"angle",name:"Hue"}},base:te,fromBase(t){if(void 0===this.ε){let t=Object.values(this.base.coords)[1].refRange,e=t[1]-t[0];this.ε=e/1e5}let[e,i,s]=t,n=Math.abs(i)<this.ε&&Math.abs(s)<this.ε,a=n?null:ee(180*Math.atan2(s,i)/Math.PI);return[e,n?0:Math.sqrt(i**2+s**2),a]},toBase(t){let[e,i,s]=t,n=null,a=null;return zt(s)||(i=i<0?0:i,n=i*Math.cos(s*Math.PI/180),a=i*Math.sin(s*Math.PI/180)),[e,n,a]},formats:{lch:{coords:["<percentage> | <number>","<number> | <percentage>","<number> | <angle>"]}}});const se=25**7,ne=Math.PI,ae=180/ne,oe=ne/180;function re(t){const e=t*t;return e*e*e*t}function le(t,e,{kL:i=1,kC:s=1,kH:n=1}={}){[t,e]=Zt([t,e]);let[a,o,r]=te.from(t),l=ie.from(te,[a,o,r])[1],[h,d,c]=te.from(e),u=ie.from(te,[h,d,c])[1];l<0&&(l=0),u<0&&(u=0);let p=re((l+u)/2),m=.5*(1-Math.sqrt(p/(p+se))),b=(1+m)*o,g=(1+m)*d,f=Math.sqrt(b**2+r**2),x=Math.sqrt(g**2+c**2),w=0===b&&0===r?0:Math.atan2(r,b),v=0===g&&0===c?0:Math.atan2(c,g);w<0&&(w+=2*ne),v<0&&(v+=2*ne),w*=ae,v*=ae;let y,k=h-a,C=x-f,z=v-w,E=w+v,$=Math.abs(z);f*x===0?y=0:$<=180?y=z:z>180?y=z-360:z<-180?y=z+360:Xt.warn("the unthinkable has happened");let S,M=2*Math.sqrt(x*f)*Math.sin(y*oe/2),L=(a+h)/2,A=(f+x)/2,T=re(A);S=f*x===0?E:$<=180?E/2:E<360?(E+360)/2:(E-360)/2;let P=(L-50)**2,R=1+.015*P/Math.sqrt(20+P),D=1+.045*A,B=1;B-=.17*Math.cos((S-30)*oe),B+=.24*Math.cos(2*S*oe),B+=.32*Math.cos((3*S+6)*oe),B-=.2*Math.cos((4*S-63)*oe);let O=1+.015*A*B,I=30*Math.exp(-1*((S-275)/25)**2),N=2*Math.sqrt(T/(T+se)),H=(k/(i*R))**2;return H+=(C/(s*D))**2,H+=(M/(n*O))**2,H+=-1*Math.sin(2*I*oe)*N*(C/(s*D))*(M/(n*O)),Math.sqrt(H)}const he=[[.819022437996703,.3619062600528904,-.1288737815209879],[.0329836539323885,.9292868615863434,.0361446663506424],[.0481771893596242,.2642395317527308,.6335478284694309]],de=[[1.2268798758459243,-.5578149944602171,.2813910456659647],[-.0405757452148008,1.112286803280317,-.0717110580655164],[-.0763729366746601,-.4214933324022432,1.5869240198367816]],ce=[[.210454268309314,.7936177747023054,-.0040720430116193],[1.9779985324311684,-2.42859224204858,.450593709617411],[.0259040424655478,.7827717124575296,-.8086757549230774]],ue=[[1,.3963377773761749,.2158037573099136],[1,-.1055613458156586,-.0638541728258133],[1,-.0894841775298119,-1.2914855480194092]];var pe=new Ut({id:"oklab",name:"Oklab",coords:{l:{refRange:[0,1],name:"Lightness"},a:{refRange:[-.4,.4]},b:{refRange:[-.4,.4]}},white:"D65",base:Vt,fromBase(t){let e=vt(t,he);return e[0]=Math.cbrt(e[0]),e[1]=Math.cbrt(e[1]),e[2]=Math.cbrt(e[2]),vt(e,ce,e)},toBase(t){let e=vt(t,ue);return e[0]=e[0]**3,e[1]=e[1]**3,e[2]=e[2]**3,vt(e,de,e)},formats:{oklab:{coords:["<percentage> | <number>","<number> | <percentage>","<number> | <percentage>"]}}});function me(t,e){[t,e]=Zt([t,e]);let[i,s,n]=pe.from(t),[a,o,r]=pe.from(e),l=i-a,h=s-o,d=n-r;return Math.sqrt(l**2+h**2+d**2)}function be(t,e,{epsilon:i=75e-6}={}){t=Zt(t),e||(e=t.space),e=Ut.get(e);let s=t.coords;return e!==t.space&&(s=e.from(t)),e.inGamut(s,{epsilon:i})}function ge(t,e){t=Zt(t);let i,s=Ut.get(e,e?.space),n=e?.precision;return i=!s||t.space.equals(s)?t.coords.slice():s.from(t),void 0===n?i:i.map(t=>$t(t,n))}function fe(t,e){if(t=Zt(t),"alpha"===e)return t.alpha??1;let{space:i,index:s}=Ut.resolveCoord(e,t.space);return ge(t,i)[s]}function xe(t,e,i,s){return t=Zt(t),Array.isArray(e)&&([e,i,s]=[t.space,e,i]),e=Ut.get(e),t.coords=e===t.space?i.slice():e.to(t.space,i),void 0!==s&&(t.alpha=s),t}function we(t,e,i){if(t=Zt(t),2===arguments.length&&"object"===kt(arguments[1])){let e=arguments[1];for(let i in e)we(t,i,e[i])}else if("function"==typeof i&&(i=i(fe(t,e))),"alpha"===e)t.alpha=i;else{let{space:s,index:n}=Ut.resolveCoord(e,t.space),a=ge(t,s);a[n]=i,xe(t,s,a)}return t}function ve(t){return{space:t.space,coords:t.coords.slice(),alpha:t.alpha}}xe.returns="color",we.returns="color";const ye=Math.PI/180;var ke=new Ut({id:"xyz-abs-d65",cssId:"--xyz-abs-d65",name:"Absolute XYZ D65",coords:{x:{refRange:[0,9504.7],name:"Xa"},y:{refRange:[0,1e4],name:"Ya"},z:{refRange:[0,10888.3],name:"Za"}},base:Vt,fromBase:t=>t.map(t=>203*t),toBase:t=>t.map(t=>t/203)});const Ce=1.15,ze=.66,Ee=2610/16384,$e=16384/2610,Se=.8359375,Me=2413/128,Le=18.6875,Ae=1.7*2523/32,Te=32/(1.7*2523),Pe=-.56,Re=16295499532821565e-27,De=[[.41478972,.579999,.014648],[-.20151,1.120649,.0531008],[-.0166008,.2648,.6684799]],Be=[[1.9242264357876067,-1.0047923125953657,.037651404030618],[.35031676209499907,.7264811939316552,-.06538442294808501],[-.09098281098284752,-.3127282905230739,1.5227665613052603]],Oe=[[.5,.5,0],[3.524,-4.066708,.542708],[.199076,1.096799,-1.295875]]