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n=yr(),i=(t.width+t.height)/(4*Math.max(t.width,t.height));return y(b("circle"),{stroke:e.color,"stroke-width":n[r?0:1],fill:"none",opacity:Co(e,r),cx:o[0],cy:o[1],r:i-n[1]/2})}function pe(e){return["#ffffff","#fff","white"].includes(e.color)?wo.hilitePrimary:wo.hiliteWhite}function hr(e,o,r,t,n,i){function a(s){let f=wr(i&&!n),d=t[0]-r[0],u=t[1]-r[1],S=Math.atan2(u,d),v=Math.cos(S)*f,p=Math.sin(S)*f;return y(b("line"),{stroke:s?pe(o).color:o.color,"stroke-width":Sr(o,n)+(s?.04:0),"stroke-linecap":"round","marker-end":`url(#arrowhead-${s?pe(o).key:o.key})`,opacity:e.modifiers?.hilite?1:Co(o,n),x1:r[0],y1:r[1],x2:t[0]-v,y2:t[1]-p})}if(!e.modifiers?.hilite)return a(!1);let c=b("g"),l=y(b("g"),{filter:"url(#cg-filter-blur)"});return l.appendChild(Pr(r,t)),l.appendChild(a(!0)),c.appendChild(l),c.appendChild(a(!1)),c}function br(e){let o=y(b("marker"),{id:"arrowhead-"+e.key,orient:"auto",overflow:"visible",markerWidth:4,markerHeight:4,refX:e.key.startsWith("hilite")?1.86:2.05,refY:2});return o.appendChild(y(b("path"),{d:"M0,0 V4 L3,2 Z",fill:e.color})),o.setAttribute("cgKey",e.key),o}function vr(e,o,r,t,n,i){let c=.4*.75**e.text.length,l=Do(r,t,n),s=i==="tr"?.4:0,f=y(b("g"),{transform:`translate(${l[0]+s},${l[1]-s})`,cgHash:o});f.appendChild(y(b("circle"),{r:.4/2,"fill-opacity":i?1:.8,"stroke-opacity":i?1:.7,"stroke-width":.03,fill:e.fill??"#666",stroke:"white"}));let d=y(b("text"),{"font-size":c,"font-family":"Noto Sans","text-anchor":"middle",fill:"white",y:.13*.75**e.text.length});return d.innerHTML=e.text,f.appendChild(d),f}function fe(e,o){return o==="white"?e:[7-e[0],7-e[1]]}function Te(e,o){return(e&&o.has(e)&&o.get(e).size>1)===!0}function b(e){return document.createElementNS("http://www.w3.org/2000/svg",e)}function y(e,o){for(let r in o)Object.prototype.hasOwnProperty.call(o,r)&&e.setAttribute(r,o[r]);return 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t=Kr(e);r.addEventListener("touchstart",t,{passive:!1}),r.addEventListener("mousedown",t,{passive:!1})}function To(e,o){let r=[];if("ResizeObserver"in window||r.push(_(document.body,"chessground.resize",o)),!e.viewOnly){let t=No(e,fo,ao),n=No(e,go,co);for(let a of["touchmove","mousemove"])r.push(_(document,a,t));for(let a of["touchend","mouseup"])r.push(_(document,a,n));let i=()=>e.dom.bounds.clear();r.push(_(document,"scroll",i,{capture:!0,passive:!0})),r.push(_(window,"resize",i,{passive:!0}))}return()=>r.forEach(t=>t())}function _(e,o,r,t){return e.addEventListener(o,r,t),()=>e.removeEventListener(o,r,t)}var Kr=e=>o=>{e.draggable.current?W(e):e.drawable.current?Ne(e):o.shiftKey||ie(o)?e.drawable.enabled&&no(e,o):e.viewOnly||(e.dropmode.active?Ao(e,o):uo(e,o))},No=(e,o,r)=>t=>{e.drawable.current?e.drawable.enabled&&r(e,t):e.viewOnly||o(e,t)};function Ro(e){let o=h(e),r=V(e.dom.bounds()),t=e.dom.elements.board,n=e.pieces,i=e.animation.current,a=i?i.plan.anims:new Map,c=i?i.plan.fadings:new Map,l=e.draggable.current,s=Cr(e),f=new Set,d=new Set,u=new Map,S=new Map,v,p,F,z,k,I,me,A,he,ee;for(p=t.firstChild;p;){if(v=p.cgKey,Bo(p))if(F=n.get(v),k=a.get(v),I=c.get(v),z=p.cgPiece,p.cgDragging&&(!l||l.orig!==v)&&(p.classList.remove("dragging"),x(p,r(g(v),o)),p.cgDragging=!1),!I&&p.cgFading&&(p.cgFading=!1,p.classList.remove("fading")),F){if(k&&p.cgAnimating&&z===J(F)){let m=g(v);m[0]+=k[2],m[1]+=k[3],p.classList.add("anim"),x(p,r(m,o))}else p.cgAnimating&&(p.cgAnimating=!1,p.classList.remove("anim"),x(p,r(g(v),o)),e.addPieceZIndex&&(p.style.zIndex=Oe(g(v),o)));z===J(F)&&(!I||!p.cgFading)?f.add(v):I&&z===J(I)?(p.classList.add("fading"),p.cgFading=!0):Be(u,z,p)}else Be(u,z,p);else if(Vo(p)){let m=p.className;s.get(v)===m?d.add(v):Be(S,m,p)}p=p.nextSibling}for(let[m,j]of s)if(!d.has(m)){he=S.get(j),ee=he&&he.pop();let N=r(g(m),o);if(ee)ee.cgKey=m,x(ee,N);else{let H=K("square",j);H.cgKey=m,x(H,N),t.insertBefore(H,t.firstChild)}}for(let[m,j]of n)if(k=a.get(m),!f.has(m))if(me=u.get(J(j)),A=me&&me.pop(),A){A.cgKey=m,A.cgFading&&(A.classList.remove("fading"),A.cgFading=!1);let N=g(m);e.addPieceZIndex&&(A.style.zIndex=Oe(N,o)),k&&(A.cgAnimating=!0,A.classList.add("anim"),N[0]+=k[2],N[1]+=k[3]),x(A,r(N,o))}else{let N=J(j),H=K("piece",N),oe=g(m);H.cgPiece=N,H.cgKey=m,k&&(H.cgAnimating=!0,oe[0]+=k[2],oe[1]+=k[3]),x(H,r(oe,o)),e.addPieceZIndex&&(H.style.zIndex=Oe(oe,o)),t.appendChild(H)}for(let m of u.values())qo(e,m);for(let m of S.values())qo(e,m)}function Oo(e){let o=h(e),r=V(e.dom.bounds()),t=e.dom.elements.board.firstChild;for(;t;)(Bo(t)&&!t.cgAnimating||Vo(t))&&x(t,r(g(t.cgKey),o)),t=t.nextSibling}function Ve(e){let o=e.dom.elements.wrap.getBoundingClientRect(),r=e.dom.elements.container,t=o.height/o.width,n=Math.floor(o.width*window.devicePixelRatio/8)*8/window.devicePixelRatio,i=n*t;r.style.width=n+"px",r.style.height=i+"px",e.dom.bounds.clear(),e.addDimensionsCssVarsTo?.style.setProperty("---cg-width",n+"px"),e.addDimensionsCssVarsTo?.style.setProperty("---cg-height",i+"px")}var Bo=e=>e.tagName==="PIECE",Vo=e=>e.tagName==="SQUARE";function qo(e,o){for(let r of o)e.dom.elements.board.removeChild(r)}function Oe(e,o){let t=e[1];return`${o?10-t:3+t}`}var J=e=>`${e.color} ${e.role}`;function Cr(e){let o=new Map;if(e.lastMove&&e.highlight.lastMove)for(let n of e.lastMove)O(o,n,"last-move");if(e.check&&e.highlight.check&&O(o,e.check,"check"),e.selected&&(O(o,e.selected,"selected"),e.movable.showDests)){let n=e.movable.dests?.get(e.selected);if(n)for(let a of n)O(o,a,"move-dest"+(e.pieces.has(a)?" oc":""));let i=e.premovable.customDests?.get(e.selected)??e.premovable.dests;if(i)for(let a of i)O(o,a,"premove-dest"+(e.pieces.has(a)?" oc":""))}let r=e.premovable.current;if(r)for(let n of r)O(o,n,"current-premove");else e.predroppable.current&&O(o,e.predroppable.current.key,"current-premove");let t=e.exploding;if(t)for(let n of t.keys)O(o,n,"exploding"+t.stage);return e.highlight.custom&&e.highlight.custom.forEach((n,i)=>{O(o,i,n)}),o}function O(e,o,r){let t=e.get(o);t?e.set(o,`${t} ${r}`):e.set(o,r)}function Be(e,o,r){let t=e.get(o);t?t.push(r):e.set(o,[r])}function Lo(e,o,r){let t=new Map,n=[];for(let c of e)t.set(c.hash,!1);let i=o.firstElementChild,a;for(;i;)a=i.getAttribute("cgHash"),t.has(a)?t.set(a,!0):n.push(i),i=i.nextElementSibling;for(let c of n)o.removeChild(c);for(let c of e)t.get(c.hash)||o.appendChild(r(c))}function Go(e,o){let t=e.drawable.autoShapes.filter(n=>n.piece).map(n=>({shape:n,hash:Er(n),current:!1}));Lo(t,o,n=>Dr(e,n,e.dom.bounds()))}function Wo(e){let o=h(e),r=V(e.dom.bounds()),t=e.dom.elements.autoPieces?.firstChild;for(;t;)be(t,r(g(t.cgKey),o),t.cgScale),t=t.nextSibling}function Dr(e,{shape:o,hash:r},t){let n=o.orig,i=o.piece?.role,a=o.piece?.color,c=o.piece?.scale,l=K("piece",`${i} ${a}`);return l.setAttribute("cgHash",r),l.cgKey=n,l.cgScale=c,be(l,V(t)(g(n),h(e)),c),l}var Er=e=>[e.orig,e.piece?.role,e.piece?.color,e.piece?.scale].join(",");function Et({el:e,config:o}){return Nr(e,o)}function Nr(e,o){let r=So();ue(r,o||{});function t(){let n="dom"in r?r.dom.unbind:void 0,i=Eo(e,r),a=Fe(()=>i.board.getBoundingClientRect()),c=f=>{Ro(s),i.autoPieces&&Go(s,i.autoPieces),!f&&i.svg&&Ko(s,i.svg,i.customSvg)},l=()=>{Ve(s),Oo(s),i.autoPieces&&Wo(s)},s=r;return s.dom={elements:i,bounds:a,redraw:Hr(c),redrawNow:c,unbind:n},s.drawable.prevSvgHash="",Ve(s),c(!1),Ho(s,l),n||(s.dom.unbind=To(s,l)),s.events.insert&&s.events.insert(i),s}return yo(t(),t)}function Hr(e){let o=!1;return()=>{o||(o=!0,requestAnimationFrame(()=>{e(),o=!1}))}}export{Nr as Chessground,Et as initModule}; | |