openchemlib/dist/openchemlib.js

Manipulate molecules

var Cl=class{copyMolecule(Z){let Bt=Z.getIDCodeAndCoordinates();navigator.clipboard.writeText(`${Bt.idCode} ${Bt.coordinates}`)}pasteMolecule(){return null}};var DS="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",JU=new Uint8Array(256);for(let w=0;w<DS.length;w++)JU[DS.charCodeAt(w)]=w;function uS(w){let Z=w.length*.75,Bt=w.length,ot,Ft=0,H1,bt,y1,i1;w.at(-1)==="="&&(Z--,w.at(-2)==="="&&Z--);let L1=new ArrayBuffer(Z),u1=new Uint8Array(L1);for(ot=0;ot<Bt;ot+=4)H1=JU[w.charCodeAt(ot)],bt=JU[w.charCodeAt(ot+1)],y1=JU[w.charCodeAt(ot+2)],i1=JU[w.charCodeAt(ot+3)],u1[Ft++]=H1<<2|bt>>4,u1[Ft++]=(bt&15)<<4|y1>>2,u1[Ft++]=(y1&3)<<6|i1&63;return L1}function Ml(w){return w.toString(16).padStart(2,"0")}var hr=globalThis.devicePixelRatio||1;var z2=class{constructor(Z){this.ctx=Z,this.ctx.textAlign="left",this.ctx.textBaseline="top",this.currentFontSize=12,this.currentFont="12px sans-serif",this.ctx.font=this.currentFont,this.currentColor="#000000",this.currentLineWidth=1,this.canvasCache=new Map}clearRect(Z,Bt,ot,Ft){this.ctx.clearRect(Z,Bt,ot,Ft)}getBackgroundRGB(){return 16777215}getForegroundRGB(){return 0}getSelectionBackgroundRGB(){return 12310268}getLineWidth(){return this.currentLineWidth}setRGB(Z){let Bt=Z>>>16&255,ot=Z>>>8&255,Ft=Z>>>0&255;this.currentColor=`#${Ml(Bt)}${Ml(ot)}${Ml(Ft)}`,this.ctx.fillStyle=this.currentColor,this.ctx.strokeStyle=this.currentColor}setFont(Z,Bt,ot){this.currentFontSize=Z,this.currentFont=`${Bt?"bold":""} ${ot?"italic":""} ${Z}px sans-serif`,this.ctx.font=this.currentFont}getFontSize(){return this.currentFontSize}getBounds(Z){let Bt=this.ctx.measureText(Z);return{x:Bt.actualBoundingBoxLeft,y:Bt.actualBoundingBoxAscent,width:Bt.actualBoundingBoxRight,height:Bt.actualBoundingBoxAscent}}drawString(Z,Bt,ot){this.ctx.fillText(ot,Z,Bt)}drawCenteredString(Z,Bt,ot){this.ctx.textAlign="center",this.ctx.textBaseline="middle",this.ctx.fillText(ot,Z,Bt),this.ctx.textAlign="left",this.ctx.textBaseline="top"}setLineWidth(Z){this.currentLineWidth=Z,this.ctx.lineWidth=Z}fillRectangle(Z,Bt,ot,Ft){this.ctx.fillRect(Z,Bt,ot,Ft)}fillCircle(Z,Bt,ot){let Ft=ot/2;this.ctx.beginPath(),this.ctx.arc(Z+Ft,Bt+Ft,Ft,0,2*Math.PI),this.ctx.fill()}drawLine(Z,Bt,ot,Ft){this.ctx.beginPath(),this.ctx.moveTo(Z,Bt),this.ctx.lineTo(ot,Ft),this.ctx.stroke()}drawPolygon(Z){this.ctx.beginPath(),this.ctx.moveTo(Z.getX(0),Z.getY(0));for(let Bt=1;Bt<Z.getSize();Bt++)this.ctx.lineTo(Z.getX(Bt),Z.getY(Bt));this.ctx.stroke()}drawRectangle(Z,Bt,ot,Ft){this.ctx.strokeRect(Z,Bt,ot,Ft)}fillPolygon(Z){this.ctx.beginPath(),this.ctx.moveTo(Z.getX(0),Z.getY(0));for(let Bt=1;Bt<Z.getSize();Bt++)this.ctx.lineTo(Z.getX(Bt),Z.getY(Bt));this.ctx.fill()}drawImage(Z,Bt,ot,Ft,H1,bt,y1,i1,L1){if(arguments.length!==9)throw new Error(`drawImage call with ${arguments.length} arguments unimplemented`);let u1=this.canvasCache.get(Z);if(!u1){u1=document.createElement("canvas");let n0=Z.imageData;u1.width=n0.width,u1.height=n0.height;let N0=u1.getContext("2d");N0.globalAlpha=0,N0.putImageData(n0,0,0),this.canvasCache.set(Z,u1)}this.ctx.drawImage(u1,Bt,ot,Ft,H1,bt,y1,i1,L1)}isDarkBackground(){return!1}};var Hl=class{constructor(Z,Bt){this.canvasElement=Z,this.changeListener=Bt,this.drawContext=new z2(this.canvasElement.getContext("2d"))}getBackgroundRGB(){return 16777215}getCanvasWidth(){return this.canvasElement.width}getCanvasHeight(){return this.canvasElement.height}getDrawContext(){return this.drawContext}onChange(Z,Bt){this.changeListener?.({what:Z,isUserEvent:Bt})}getClipboardHandler(){return new Cl}};var BPt=`
/* We can customize editor styles here. */
`,Gc;function QS(){if(Gc)return Gc;let w=new CSSStyleSheet;return w.replaceSync(BPt),Gc=w,w}function Jc(w,Z,Bt){let ot=-1;function Ft(bt,y1,i1=0){y1.button>0||Z.fireMouseEvent(bt,y1.button+1,i1,Math.round(y1.offsetX*hr),Math.round(y1.offsetY*hr),y1.shiftKey,y1.ctrlKey,y1.altKey,y1.button===2)}w.addEventListener("pointerdown",bt=>{ot===-1&&(ot=bt.pointerId,Ft(Bt.MOUSE_EVENT_PRESSED,bt))});function H1(bt){ot===bt.pointerId&&(ot=-1,Ft(Bt.MOUSE_EVENT_RELEASED,bt))}return document.addEventListener("pointerup",H1),w.addEventListener("click",bt=>{Ft(Bt.MOUSE_EVENT_CLICKED,bt,bt.detail)}),w.addEventListener("pointerenter",bt=>{Ft(Bt.MOUSE_EVENT_ENTERED,bt)}),w.addEventListener("pointerleave",bt=>{Ft(Bt.MOUSE_EVENT_EXITED,bt)}),w.addEventListener("pointermove",bt=>{ot!==-1?ot===bt.pointerId&&Ft(Bt.MOUSE_EVENT_DRAGGED,bt):Ft(Bt.MOUSE_EVENT_MOVED,bt)}),()=>{document.removeEventListener("pointerup",H1)}}function US(w,Z,Bt,ot,Ft){let H1=typeof navigator<"u"&&navigator.platform==="MacIntel",bt=i1=>H1&&i1.metaKey||!H1&&i1.ctrlKey;function y1(i1,L1){let u1=vPt(L1,ot);u1!==null&&Bt.fireKeyEvent(i1,u1,L1.altKey,L1.ctrlKey,L1.shiftKey,bt(L1))}Z.addEventListener("keydown",i1=>{bt(i1)&&i1.key==="c"||bt(i1)&&i1.key==="v"||y1(ot.KEY_EVENT_PRESSED,i1)}),Z.addEventListener("keyup",i1=>{y1(ot.KEY_EVENT_RELEASED,i1)}),w.addEventListener("paste",i1=>{let L1=i1.clipboardData.getData("text"),u1=Ft.fromText(L1);u1&&u1.getAllAtoms()>0&&Bt.addPastedOrDropped(u1)})}function vPt(w,Z){switch(w.key){case"Control":return Z.KEY_CTRL;case"Alt":return Z.KEY_ALT;case"Shift":return Z.KEY_SHIFT;case"Delete":case"Backspace":return Z.KEY_DELETE;case"F1":return Z.KEY_HELP;case"Escape":return Z.KEY_ESCAPE;case"Enter":return Z.KEY_ENTER;default:return w.key.length===1?w.key.codePointAt(0):null}}var Vl=class{constructor(Z){this.canvasElement=Z,this.drawContext=new z2(this.canvasElement.getContext("2d"))}setDimensions(Z,Bt){this.canvasElement.width=Z,this.canvasElement.style.width=`${Z/hr}px`,this.canvasElement.height=Bt,this.canvasElement.style.height=`${Bt/hr}px`}getDrawContext(){return this.drawContext}getBackgroundRGB(){return 16777215}getForegroundRGB(){return 0}};var 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