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Added support for maxTimeDelta and dateFormat

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This commit is contained in:
Michal Pemcak
2025-07-19 10:37:12 +02:00
parent ac387674a4
commit 474865ddb4
6 changed files with 107 additions and 43 deletions
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32
dist/index.d.ts vendored Normal file
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@@ -0,0 +1,32 @@
export type ChartSeries = {
data: [number, number][];
strokeColor?: string;
};
export declare function drawChart(ctx: CanvasRenderingContext2D, seriesList: ChartSeries[], opts: {
width: number;
height: number;
min?: number;
max?: number;
showYAxis?: boolean;
yTicks?: number;
backgroundColor?: string;
cursorX?: number | null;
maxTimeDelta?: number | null;
dateFormat?: (ts: number) => string;
}): void;
export declare function createChartElement(seriesList: ChartSeries[], opts: {
width?: number;
height?: number;
min?: number;
max?: number;
showYAxis?: boolean;
yTicks?: number;
backgroundColor?: string;
maxTimeDelta?: number | null;
dateFormat?: (ts: number) => string;
}): {
element: HTMLDivElement;
setSeries(series: ChartSeries[]): void;
setOptions(o: Partial<typeof opts>): void;
destroy(): void;
};

2
dist/uchart.js vendored
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@@ -1 +1 @@
function W(t,m,a){let{width:o,height:d,min:F,max:n,showYAxis:T=!1,yTicks:w=5,cursorX:l=null}=a,k=10,E=d-k-10,x=m.flatMap(s=>s.data.map(i=>i[1])),y=m.flatMap(s=>s.data.map(i=>i[0])),p=F!==void 0?F:Math.min(...x),P=n!==void 0?n:Math.max(...x),e=P-p||1,r=Math.min(...y),A=Math.max(...y)-r||1;if(t.clearRect(0,0,o,d),T){t.beginPath(),t.strokeStyle="#aaa",t.lineWidth=1,t.font="15px sans-serif",t.fillStyle=m[0]?.strokeColor||"#000";for(let s=0;s<=w;s++){let i=p+e*s/w,c=k+(1-(i-p)/e)*E;t.moveTo(0,c),t.lineTo(5,c),t.fillText(i.toFixed(2),8,c+5)}t.stroke()}for(let s of m){let i=s.data,c=s.strokeColor||"#000";t.beginPath(),t.strokeStyle=c,t.lineWidth=1;let g=!1,C=null,b=600;for(let v=0;v<i.length;v++){let[h,f]=i[v];if(h==null||f==null||isNaN(h)||isNaN(f)||!isFinite(h)||!isFinite(f)||f<p||f>P){g=!1,C=null;continue}C!=null&&h-C>b&&(g=!1);let u=(h-r)/A*o,M=k+(1-(f-p)/e)*E;g?t.lineTo(u,M):(t.moveTo(u,M),g=!0),C=h}t.stroke()}if(l!==null&&l>=0&&l<=o){let s=r+l/o*A;t.beginPath(),t.strokeStyle="#888",t.lineWidth=1,t.moveTo(l,0),t.lineTo(l,d),t.stroke(),t.font="12px sans-serif";let i=15;t.fillStyle="#fff",t.fillText(new Date(s).toLocaleTimeString(),l+6,i),i+=15;for(let c of m){let{data:g,strokeColor:C="#fff"}=c,b=g[0],v=Math.abs(b[0]-s);for(let h=1;h<g.length;h++){let f=Math.abs(g[h][0]-s);f<v&&(v=f,b=g[h])}t.fillStyle=C,t.fillText(b[1].toFixed(2),l+6,i),i+=15}}}function X(t,m){let a=document.createElement("div");a.style.position="relative",a.style.width=m.width!==void 0?`${m.width}px`:"100%",a.style.height=m.height!==void 0?`${m.height}px`:"100%";let o=document.createElement("canvas"),d=document.createElement("canvas");[o,d].forEach(e=>{e.style.position="absolute",e.style.top=e.style.left="0",e.style.width=e.style.height="100%",a.appendChild(e)}),d.style.pointerEvents="none";let F=o.getContext("2d"),n=d.getContext("2d"),T=t,w={...m},l=null,k=!1,S=()=>{let e=a.clientWidth,r=a.clientHeight;!e||!r||o.width===e&&o.height===r||(o.width=e,o.height=r,d.width=e,d.height=r,x(),y(l))},E=typeof ResizeObserver<"u"?new ResizeObserver(S):null;E?.observe(a),window.addEventListener("resize",S);let x=()=>{W(F,T,{...w,width:o.width,height:o.height})},y=e=>{if(n.clearRect(0,0,d.width,d.height),e==null)return;let r=T.flatMap(u=>u.data.map(M=>M[1])),Y=T.flatMap(u=>u.data.map(M=>M[0])),A=w.min??Math.min(...r),i=(w.max??Math.max(...r))-A||1,c=Math.min(...Y),C=Math.max(...Y)-c||1,b=c+e/o.width*C;n.beginPath(),n.strokeStyle="#888",n.lineWidth=1,n.moveTo(e,0),n.lineTo(e,d.height),n.stroke(),n.font="12px sans-serif",n.fillStyle="#fff",n.fillText(new Date(b).toLocaleTimeString(),e>o.width-100?e-100:e+6,15);let v=10,f=d.height-v-10,z=30;for(let{data:u,strokeColor:M="#fff"}of T){let L=u[0],D=Math.abs(L[0]-b);for(let R=1;R<u.length;R++){let O=Math.abs(u[R][0]-b);O<D&&(D=O,L=u[R])}n.fillStyle=M,n.fillText(L[1].toFixed(2),e>o.width-100?e-100:e+6,z),z+=15;let V=v+(1-(L[1]-A)/i)*f;n.beginPath(),n.arc(e,V,3,0,Math.PI*2),n.fill()}},p=e=>{let r=a.getBoundingClientRect(),Y=o.width/r.width;l=(e.clientX-r.left)*Y,k||(k=!0,requestAnimationFrame(()=>{y(l),k=!1}))},P=()=>{l=null,y(null)};return a.addEventListener("mousemove",p),a.addEventListener("mouseleave",P),setTimeout(S,0),{element:a,setSeries(e){T=e,S(),x(),y(l)},setOptions(e){w={...w,...e},S(),x(),y(l)},destroy(){E?.disconnect(),window.removeEventListener("resize",S),a.removeEventListener("mousemove",p),a.removeEventListener("mouseleave",P)}}}export{X as createChartElement,W as drawChart};
function N(t,u,o){let{width:a,height:m,min:Y,max:n,showYAxis:x=!1,yTicks:w=5,cursorX:s=null,maxTimeDelta:P}=o,c=10,k=m-c-10,y=u.flatMap(l=>l.data.map(i=>i[1])),E=u.flatMap(l=>l.data.map(i=>i[0])),p=Y!==void 0?Y:Math.min(...y),e=n!==void 0?n:Math.max(...y),r=e-p||1,C=Math.min(...E),L=Math.max(...E)-C||1;if(t.clearRect(0,0,a,m),x){t.beginPath(),t.strokeStyle="#aaa",t.lineWidth=1,t.font="15px sans-serif",t.fillStyle=u[0]?.strokeColor||"#000";for(let l=0;l<=w;l++){let i=p+r*l/w,T=c+(1-(i-p)/r)*k;t.moveTo(0,T),t.lineTo(5,T),t.fillText(i.toFixed(2),8,T+5)}t.stroke()}for(let l of u){let i=l.data,T=l.strokeColor||"#000";t.beginPath(),t.strokeStyle=T,t.lineWidth=1;let g=!1,d=null,F=P||600;for(let b=0;b<i.length;b++){let[v,h]=i[b];if(v==null||h==null||isNaN(v)||isNaN(h)||!isFinite(v)||!isFinite(h)||h<p||h>e){g=!1,d=null;continue}d!=null&&v-d>F&&(g=!1);let f=(v-C)/L*a,M=c+(1-(h-p)/r)*k;g?t.lineTo(f,M):(t.moveTo(f,M),g=!0),d=v}t.stroke()}if(s!==null&&s>=0&&s<=a){let l=C+s/a*L;t.beginPath(),t.strokeStyle="#888",t.lineWidth=1,t.moveTo(s,0),t.lineTo(s,m),t.stroke(),t.font="12px sans-serif";let i=15;t.fillStyle="#fff";let T=o.dateFormat??(g=>new Date(g).toLocaleTimeString());t.fillText(T(l),s+6,i),i+=15;for(let g of u){let{data:d,strokeColor:F="#fff"}=g,b=d[0],v=Math.abs(b[0]-l);for(let h=1;h<d.length;h++){let S=Math.abs(d[h][0]-l);S<v&&(v=S,b=d[h])}t.fillStyle=F,t.fillText(b[1].toFixed(2),s+6,i),i+=15}}}function X(t,u){let o=document.createElement("div");o.style.position="relative",o.style.width=u.width!==void 0?`${u.width}px`:"100%",o.style.height=u.height!==void 0?`${u.height}px`:"100%";let a=document.createElement("canvas"),m=document.createElement("canvas");[a,m].forEach(e=>{e.style.position="absolute",e.style.top=e.style.left="0",e.style.width=e.style.height="100%",o.appendChild(e)}),m.style.pointerEvents="none";let Y=a.getContext("2d"),n=m.getContext("2d"),x=t,w={...u},s=null,P=!1,c=()=>{let e=o.clientWidth,r=o.clientHeight;!e||!r||a.width===e&&a.height===r||(a.width=e,a.height=r,m.width=e,m.height=r,k(),y(s))},R=typeof ResizeObserver<"u"?new ResizeObserver(c):null;R?.observe(o),window.addEventListener("resize",c);let k=()=>{N(Y,x,{...w,width:a.width,height:a.height})},y=e=>{if(n.clearRect(0,0,m.width,m.height),e==null)return;let r=x.flatMap(f=>f.data.map(M=>M[1])),C=x.flatMap(f=>f.data.map(M=>M[0])),z=w.min??Math.min(...r),l=(w.max??Math.max(...r))-z||1,i=Math.min(...C),g=Math.max(...C)-i||1,d=i+e/a.width*g;n.beginPath(),n.strokeStyle="#888",n.lineWidth=1,n.moveTo(e,0),n.lineTo(e,m.height),n.stroke(),n.font="12px sans-serif",n.fillStyle="#fff";let F=w.dateFormat??(f=>new Date(f).toLocaleTimeString());n.fillText(F(d),e>a.width-100?e-100:e+6,15);let b=10,h=m.height-b-10,S=30;for(let{data:f,strokeColor:M="#fff"}of x){let D=f[0],O=Math.abs(D[0]-d);for(let A=1;A<f.length;A++){let V=Math.abs(f[A][0]-d);V<O&&(O=V,D=f[A])}n.fillStyle=M,n.fillText(D[1].toFixed(2),e>a.width-100?e-100:e+6,S),S+=15;let W=b+(1-(D[1]-z)/l)*h;n.beginPath(),n.arc(e,W,3,0,Math.PI*2),n.fill()}},E=e=>{let r=o.getBoundingClientRect(),C=a.width/r.width;s=(e.clientX-r.left)*C,P||(P=!0,requestAnimationFrame(()=>{y(s),P=!1}))},p=()=>{s=null,y(null)};return o.addEventListener("mousemove",E),o.addEventListener("mouseleave",p),setTimeout(c,0),{element:o,setSeries(e){x=e,c(),k(),y(s)},setOptions(e){w={...w,...e},c(),k(),y(s)},destroy(){R?.disconnect(),window.removeEventListener("resize",c),o.removeEventListener("mousemove",E),o.removeEventListener("mouseleave",p)}}}export{X as createChartElement,N as drawChart};