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  1. 1
      .gitignore
  2. 201
      LICENSE
  3. 3
      README.md
  4. 35
      build/webpack.base.conf.js
  5. 8
      build/webpack.dev.conf.js
  6. 6
      build/webpack.prod.conf.js
  7. 99
      dist/index.d.ts
  8. 9
      dist/index.js
  9. 16
      dist/types.d.ts
  10. 36
      examples/demo.html
  11. 48
      examples/demo_live.html
  12. 90
      examples/demo_vertical.html
  13. 4615
      package-lock.json
  14. 32
      package.json
  15. 522
      src/index.ts
  16. 16
      src/types.ts
  17. 22
      tsconfig.json

1
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node_modules

201
LICENSE
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Apache License
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http://www.apache.org/licenses/
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3
README.md
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# line-pod
# Chartwerk Line Pod
Chartwerk Line Pod

35
build/webpack.base.conf.js
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const path = require('path');
function resolve(dir) {
return path.join(__dirname, '..', dir)
}
module.exports = {
context: resolve('src'),
entry: './index.ts',
plugins: [],
module: {
rules: [
{
test: /\.ts$/,
use: 'ts-loader',
exclude: /node_modules/
},
{
test: /\.css$/,
use: ['style-loader', 'css-loader'],
exclude: /node_modules/
}
],
},
resolve: {
extensions: ['.ts', '.js'],
},
output: {
filename: 'index.js',
path: resolve('dist'),
libraryTarget: 'umd',
umdNamedDefine: true
}
};

8
build/webpack.dev.conf.js
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const baseWebpackConfig = require('./webpack.base.conf');
var conf = baseWebpackConfig;
conf.devtool = 'inline-source-map';
conf.watch = true;
conf.mode = 'development';
module.exports = conf;

6
build/webpack.prod.conf.js
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const baseWebpackConfig = require('./webpack.base.conf');
var conf = baseWebpackConfig;
conf.mode = 'production';
module.exports = baseWebpackConfig;

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import { ChartwerkPod, TickOrientation, TimeFormat } from '@chartwerk/core';
import { LineTimeSerie, LineOptions, Mode } from './types';
export declare class ChartwerkLineChart extends ChartwerkPod<LineTimeSerie, LineOptions> {
lineGenerator: any;
metricContainer: any;
constructor(_el: HTMLElement, _series?: LineTimeSerie[], _options?: LineOptions);
renderMetrics(): void;
initLineGenerator(): void;
appendData(data: [number, number][]): void;
_renderDots(datapoints: number[][], serieIdx: number): void;
_renderLines(datapoints: number[][], serieIdx: number): void;
_renderMetric(datapoints: number[][], metricOptions: {
color: string;
confidence: number;
target: string;
mode: Mode;
serieIdx: number;
renderDots: boolean;
renderLines: boolean;
}): void;
updateCrosshair(): void;
appendCrosshairCircles(): void;
appendCrosshairCircle(serieIdx: number): void;
renderSharedCrosshair(values: {
x?: number;
y?: number;
}): void;
hideSharedCrosshair(): void;
moveCrosshairLine(xPosition: number, yPosition: number): void;
moveCrosshairCircle(xPosition: number, yPosition: number, serieIdx: number): void;
hideCrosshairCircle(serieIdx: number): void;
getClosestDatapoint(serie: LineTimeSerie, xValue: number, yValue: number): [number, number];
getClosestIndex(datapoints: [number, number][], xValue: number, yValue: number): number;
getValueInterval(columnIdx: number): number | undefined;
onMouseMove(): void;
findAndHighlightDatapoints(xValue: number, yValue: number): {
value: [number, number];
color: string;
label: string;
}[];
isOutOfRange(closestDatapoint: [number, number], xValue: number, yValue: number, useOutOfRange?: boolean): boolean;
onMouseOver(): void;
onMouseOut(): void;
}
export declare const VueChartwerkLineChartObject: {
render(createElement: any): any;
mixins: {
props: {
id: {
type: StringConstructor;
required: boolean;
};
series: {
type: ArrayConstructor;
required: boolean;
default: () => any[];
};
options: {
type: ObjectConstructor;
required: boolean;
default: () => {};
};
};
watch: {
id(): void;
series(): void;
options(): void;
};
mounted(): void;
destroyed(): void;
methods: {
render(): void;
renderSharedCrosshair(values: {
x?: number;
y?: number;
}): void;
hideSharedCrosshair(): void;
onPanningRescale(event: any): void;
renderChart(): void;
appendEvents(): void;
zoomIn(range: any): void;
zoomOut(centers: any): void;
mouseMove(evt: any): void;
mouseOut(): void;
onLegendClick(idx: any): void;
panningEnd(range: any): void;
panning(range: any): void;
contextMenu(evt: any): void;
sharedCrosshairMove(event: any): void;
renderEnd(): void;
};
}[];
methods: {
render(): void;
renderSharedCrosshair(values: any): void;
hideSharedCrosshair(): void;
};
};
export { LineTimeSerie, LineOptions, Mode, TickOrientation, TimeFormat };

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import { TimeSerie, Options } from '@chartwerk/core';
declare type LineTimeSerieParams = {
confidence: number;
mode: Mode;
maxLength: number;
renderDots: boolean;
renderLines: boolean;
useOutOfRange: boolean;
};
export declare enum Mode {
STANDARD = "Standard",
CHARGE = "Charge"
}
export declare type LineTimeSerie = TimeSerie & Partial<LineTimeSerieParams>;
export declare type LineOptions = Options;
export {};

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examples/demo.html
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<!DOCTYPE html>
<html>
<head>
<meta content="text/html;charset=utf-8" http-equiv="Content-Type">
<meta content="utf-8" http-equiv="encoding">
<script src="../dist/index.js" type="text/javascript"></script>
</head>
<body>
<div id="chart" style="width: 500px; height: 500px;"></div>
<script type="text/javascript">
const startTime = 1590590148;
const arrayLength = 20;
const data1 = Array.from({ length: arrayLength }, (el, idx) => [Math.floor(Math.random() * 40), startTime + idx * 10000]);
const data2 = Array.from({ length: arrayLength }, (el, idx) => [Math.floor(Math.random() * 100), startTime + idx * 10000]);
const data3 = Array.from({ length: arrayLength }, (el, idx) => [Math.floor(Math.random() * 20) + 90, startTime + idx * 10000]);
const zoomIn = (ranges) => { const range = ranges[0]; options.axis.x.range = range; pod.updateData(undefined, options) }
const zoomOut = (ranges) => { console.log('zoomout'); options.axis.x.range = undefined; pod.updateData(undefined, options) }
let options = {
renderLegend: false, usePanning: false, axis: { y: { invert: false, range: [0, 350] }, x: { format: 'time' } },
eventsCallbacks: { zoomIn: zoomIn, zoomOut }
}
var pod = new ChartwerkLineChart(
document.getElementById('chart'),
[
{ target: 'test1', datapoints: data1, color: 'green' },
{ target: 'test2', datapoints: data2, color: 'blue' },
{ target: 'test3', datapoints: data3, color: 'orange' },
],
options
);
pod.render();
</script>
</body>
</html>

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examples/demo_live.html
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<!DOCTYPE html>
<html>
<head>
<meta content="text/html;charset=utf-8" http-equiv="Content-Type">
<meta content="utf-8" http-equiv="encoding">
<script src="../dist/index.js" type="text/javascript"></script>
</head>
<body>
<div id="chart" style="width: 500px; height: 500px;"></div>
<script type="text/javascript">
const startTime = 1590590148;
const arrayLength = 100;
const data1 = Array.from({ length: arrayLength }, (el, idx) => [Math.floor(Math.random() * 40), startTime + idx * 10000]);
const data2 = Array.from({ length: arrayLength }, (el, idx) => [Math.floor(Math.random() * 100), startTime + idx * 10000]);
const data3 = Array.from({ length: arrayLength }, (el, idx) => [Math.floor(Math.random() * 20) + 90, startTime + idx * 10000]);
let options = { renderLegend: false, usePanning: false, axis: { y: { invert: false, range: [0, 350] }, x: { format: 'time' } } };
var pod = new ChartwerkLineChart(
document.getElementById('chart'),
[
{ target: 'test1', datapoints: data1, color: 'green', maxLength: arrayLength + 30, renderDots: true },
{ target: 'test2', datapoints: data2, color: 'blue', maxLength: arrayLength + 30, renderDots: true },
{ target: 'test3', datapoints: data3, color: 'orange', maxLength: arrayLength + 30, renderDots: true },
],
options
);
pod.render();
let rerenderIdx = arrayLength;
var test = setInterval(() => {
rerenderIdx += 1;
const d1 = [Math.floor(Math.random() * 40), startTime + rerenderIdx * 10000];
const d2 = [Math.floor(Math.random() * 100), startTime + rerenderIdx * 10000];
const d3 = [Math.floor(Math.random() * 20) + 90, startTime + rerenderIdx * 10000];
console.time('rerender');
pod.appendData([d1, d2, d3]);
console.timeEnd('rerender');
if(rerenderIdx > arrayLength + 100) {
clearInterval(test);
}
}, 1000);
</script>
</body>
</html>

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examples/demo_vertical.html
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<!DOCTYPE html>
<html>
<head>
<meta content="text/html;charset=utf-8" http-equiv="Content-Type">
<meta content="utf-8" http-equiv="encoding">
<script src="../dist/index.js" type="text/javascript"></script>
</head>
<body>
<div id="chart" style="width: 50%; height: 500px;"></div>
<script type="text/javascript">
const startTime = 1590590148;
const arrayLength = 20;
const data1 = createDatapoints(arrayLength, startTime, 40);
const data2 = createDatapoints(arrayLength, startTime, 30, 50);
const data3 = createDatapoints(arrayLength, startTime, 20, 90);
let options = {
renderLegend: false,
axis: {
y: { invert: true, valueFormatter: timeValueFormatter, format: 'custom', colorFormatter: colorFormatter },
x: { format: 'numeric' }
},
zoomEvents: {
mouse: {
pan: { isActive: true, orientation: 'vertical', keyEvent: 'shift' },
zoom: { isActive: true, orientation: 'vertical', keyEvent: 'main' }
},
scroll: {
pan: { isActive: true, orientation: 'vertical', keyEvent: 'main' },
zoom: { isActive: false, keyEvent: 'shift' }
}
},
eventsCallbacks: { zoomIn: zoomIn, zoomOut, panning: onPanning, },
crosshair: { orientation: 'horizontal' },
margin: { top: 30, right: 20, bottom: 20, left: 50 }
}
var pod = new ChartwerkLineChart(
document.getElementById('chart'),
[
{ target: 'test1', datapoints: data1, color: 'green' },
{ target: 'test2', datapoints: data2, color: 'blue' },
{ target: 'test3', datapoints: data3, color: 'orange' },
],
options
);
pod.render();
function zoomIn(ranges) {
const range = ranges[1];
options.axis.y.range = range;
pod.updateData(undefined, options);
}
function zoomOut() {
options.axis.y.range = undefined;
console.log('zoomOut', pod.updateData);
pod.updateData(undefined, options)
}
function onPanning() {
console.log('panning', pod);
}
function createDatapoints(arrayLength, startTime, randomValue, randomOffset = 0) {
return Array.from({ length: arrayLength }, (el, idx) => [
startTime + idx * 10000, // y axis
Math.floor(Math.random() * randomValue) + randomOffset // x axis
]);
}
function timeValueFormatter(value) {
const date = new Date(value);
const hours = date.getHours();
const minutes = '0' + date.getMinutes();
const seconds = '0' + date.getSeconds();
return hours + ':' + minutes.substr(-2) + ':' + seconds.substr(-2);
}
function colorFormatter(value, index) {
if(index % 2 === 0) {
return 'red';
}
return 'black';
}
</script>
</body>
</html>

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package.json
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{
"name": "@chartwerk/line-chart",
"version": "0.2.4",
"description": "Chartwerk line chart",
"main": "dist/index.js",
"scripts": {
"build": "webpack --config build/webpack.prod.conf.js",
"dev": "webpack --config build/webpack.dev.conf.js",
"test": "echo \"Error: no test specified\" && exit 1"
},
"repository": {
"type": "git",
"url": "https://github.com/chartwerk/line-chart.git"
},
"author": "CorpGlory",
"license": "Apache-2.0",
"dependencies": {
"@chartwerk/core": "github:chartwerk/core#6e41013932bf16b05da2bc2757bcfaacba3cdb21"
},
"devDependencies": {
"@types/d3": "5.16.4",
"@types/lodash": "^4.14.149",
"css-loader": "^3.4.2",
"d3": "5.16.0",
"lodash": "^4.17.15",
"style-loader": "^1.1.3",
"ts-loader": "^6.2.1",
"typescript": "^3.8.3",
"webpack": "^4.42.0",
"webpack-cli": "^3.3.11"
}
}

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src/index.ts
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import { ChartwerkPod, VueChartwerkPodMixin, TickOrientation, TimeFormat, CrosshairOrientation } from '@chartwerk/core';
import { LineTimeSerie, LineOptions, Mode } from './types';
import * as d3 from 'd3';
import * as _ from 'lodash';
const METRIC_CIRCLE_RADIUS = 1.5;
const CROSSHAIR_CIRCLE_RADIUS = 3;
const CROSSHAIR_BACKGROUND_RAIDUS = 9;
const CROSSHAIR_BACKGROUND_OPACITY = 0.3;
export class ChartwerkLineChart extends ChartwerkPod<LineTimeSerie, LineOptions> {
lineGenerator = null;
metricContainer = null;
constructor(_el: HTMLElement, _series: LineTimeSerie[] = [], _options: LineOptions = {}) {
super(d3, _el, _series, _options);
}
renderMetrics(): void {
this.updateCrosshair();
this.initLineGenerator();
// TODO: seems that renderMetrics is not correct name
if(this.series.length === 0) {
this.renderNoDataPointsMessage();
return;
}
// TODO: move to core, and create only one container
// container for clip path
const clipContatiner = this.chartContainer
.append('g')
.attr('clip-path', `url(#${this.rectClipId})`)
.attr('class', 'metrics-container');
// container for panning
this.metricContainer = clipContatiner
.append('g')
.attr('class', ' metrics-rect')
for(let idx = 0; idx < this.series.length; ++idx) {
if(this.series[idx].visible === false) {
continue;
}
// TODO: use _.defaults same as in core
const confidence = this.series[idx].confidence || 0;
const mode = this.series[idx].mode || Mode.STANDARD;
const target = this.series[idx].target;
const renderDots = this.series[idx].renderDots !== undefined ? this.series[idx].renderDots : false;
const renderLines = this.series[idx].renderLines !== undefined ? this.series[idx].renderLines : true;
this._renderMetric(
this.series[idx].datapoints,
{
color: this.getSerieColor(idx),
confidence,
target,
mode,
serieIdx: idx,
renderDots,
renderLines,
}
);
}
}
initLineGenerator(): void {
this.lineGenerator = this.d3.line()
.x(d => this.xScale(d[1]))
.y(d => this.yScale(d[0]));
}
public appendData(data: [number, number][]): void {
this.clearScaleCache();
for(let idx = 0; idx < this.series.length; ++idx) {
if(this.series[idx].visible === false) {
continue;
}
this.series[idx].datapoints.push(data[idx]);
const maxLength = this.series[idx].maxLength;
if(maxLength !== undefined && this.series[idx].datapoints.length > maxLength) {
this.series[idx].datapoints.shift();
}
}
for(let idx = 0; idx < this.series.length; ++idx) {
this.metricContainer.select(`.metric-path-${idx}`)
.datum(this.series[idx].datapoints)
.attr('d', this.lineGenerator);
if(this.series[idx].renderDots === true) {
this.metricContainer.selectAll(`.metric-circle-${idx}`)
.data(this.series[idx].datapoints)
.attr('cx', d => this.xScale(d[1]))
.attr('cy', d => this.yScale(d[0]));
this._renderDots([data[idx]], idx);
}
}
this.renderXAxis();
this.renderYAxis();
this.renderGrid();
}
_renderDots(datapoints: number[][], serieIdx: number): void {
this.metricContainer.selectAll(null)
.data(datapoints)
.enter()
.append('circle')
.attr('class', `metric-circle-${serieIdx} metric-el`)
.attr('fill', this.getSerieColor(serieIdx))
.attr('r', METRIC_CIRCLE_RADIUS)
.style('pointer-events', 'none')
.attr('cx', d => this.xScale(d[1]))
.attr('cy', d => this.yScale(d[0]));
}
_renderLines(datapoints: number[][], serieIdx: number): void {
this.metricContainer
.append('path')
.datum(datapoints)
.attr('class', `metric-path-${serieIdx} metric-el`)
.attr('fill', 'none')
.attr('stroke', this.getSerieColor(serieIdx))
.attr('stroke-width', 1)
.attr('stroke-opacity', 0.7)
.attr('pointer-events', 'none')
.attr('d', this.lineGenerator);
}
_renderMetric(
datapoints: number[][],
metricOptions: {
color: string,
confidence: number,
target: string,
mode: Mode,
serieIdx: number,
renderDots: boolean,
renderLines: boolean,
}
): void {
if(_.includes(this.seriesTargetsWithBounds, metricOptions.target)) {
return;
}
if(metricOptions.mode === Mode.CHARGE) {
const dataPairs = this.d3.pairs(datapoints);
this.metricContainer.selectAll(null)
.data(dataPairs)
.enter()
.append('line')
.attr('x1', d => this.xScale(d[0][1]))
.attr('x2', d => this.xScale(d[1][1]))
.attr('y1', d => this.yScale(d[0][0]))
.attr('y2', d => this.yScale(d[1][0]))
.attr('stroke-opacity', 0.7)
.style('stroke-width', 1)
.style('stroke', d => {
if(d[1][0] > d[0][0]) {
return 'green';
} else if (d[1][0] < d[0][0]) {
return 'red';
} else {
return 'gray';
}
});
return;
}
if(metricOptions.renderLines === true) {
this._renderLines(datapoints, metricOptions.serieIdx);
}
if(metricOptions.renderDots === true) {
this._renderDots(datapoints, metricOptions.serieIdx);
}
let upperBoundDatapoints = [];
let lowerBoundDatapoints = [];
if(
this.options.bounds !== undefined &&
this.options.bounds.upper !== undefined &&
this.options.bounds.lower !== undefined
) {
this.series.forEach(serie => {
if(serie.target === this.formatedBound(this.options.bounds.upper, metricOptions.target)) {
upperBoundDatapoints = serie.datapoints;
}
if(serie.target === this.formatedBound(this.options.bounds.lower, metricOptions.target)) {
lowerBoundDatapoints = serie.datapoints;
}
});
}
if(upperBoundDatapoints.length > 0 && lowerBoundDatapoints.length > 0) {
const zip = (arr1, arr2) => arr1.map((k, i) => [k[0],k[1], arr2[i][0]]);
const data = zip(upperBoundDatapoints, lowerBoundDatapoints);
this.metricContainer.append('path')
.datum(data)
.attr('fill', metricOptions.color)
.attr('stroke', 'none')
.attr('opacity', '0.3')
.attr('d', this.d3.area()
.x((d: number[]) => this.xScale(d[1]))
.y0((d: number[]) => this.yScale(d[0]))
.y1((d: number[]) => this.yScale(d[2]))
)
}
if(metricOptions.confidence > 0) {
this.metricContainer.append('path')
.datum(datapoints)
.attr('fill', metricOptions.color)
.attr('stroke', 'none')
.attr('opacity', '0.3')
.attr('d', this.d3.area()
.x((d: [number, number]) => this.xScale(d[1]))
.y0((d: [number, number]) => this.yScale(d[0] + metricOptions.confidence))
.y1((d: [number, number]) => this.yScale(d[0] - metricOptions.confidence))
)
}
}
updateCrosshair(): void {
// Base don't know anything about crosshair circles, It is only for line pod
this.appendCrosshairCircles();
}
appendCrosshairCircles(): void {
// circle for each serie
this.series.forEach((serie: LineTimeSerie, serieIdx: number) => {
this.appendCrosshairCircle(serieIdx);
});
}
appendCrosshairCircle(serieIdx: number): void {
this.crosshair.append('circle')
.attr('class', `crosshair-circle-${serieIdx} crosshair-background`)
.attr('r', CROSSHAIR_BACKGROUND_RAIDUS)
.attr('clip-path', `url(#${this.rectClipId})`)
.attr('fill', this.getSerieColor(serieIdx))
.style('opacity', CROSSHAIR_BACKGROUND_OPACITY)
.style('pointer-events', 'none');
this.crosshair
.append('circle')
.attr('class', `crosshair-circle-${serieIdx}`)
.attr('clip-path', `url(#${this.rectClipId})`)
.attr('fill', this.getSerieColor(serieIdx))
.attr('r', CROSSHAIR_CIRCLE_RADIUS)
.style('pointer-events', 'none');
}
public renderSharedCrosshair(values: { x?: number, y?: number }): void {
this.onMouseOver(); // TODO: refactor to use it once
const eventX = this.xScale(values.x);
const eventY = this.yScale(values.y);
this.moveCrosshairLine(eventX, eventY);
const datapoints = this.findAndHighlightDatapoints(values.x, values.y);
if(this.options.eventsCallbacks === undefined || this.options.eventsCallbacks.sharedCrosshairMove === undefined) {
console.log('Shared crosshair move, but there is no callback');
return;
}
this.options.eventsCallbacks.sharedCrosshairMove({
datapoints: datapoints,
eventX, eventY
});
}
public hideSharedCrosshair(): void {
this.crosshair.style('display', 'none');
}
moveCrosshairLine(xPosition: number, yPosition: number): void {
switch(this.options.crosshair.orientation) {
case CrosshairOrientation.VERTICAL:
this.crosshair.select('#crosshair-line-x')
.attr('x1', xPosition)
.attr('x2', xPosition);
return;
case CrosshairOrientation.HORIZONTAL:
this.crosshair.select('#crosshair-line-y')
.attr('y1', yPosition)
.attr('y2', yPosition);
return;
case CrosshairOrientation.BOTH:
this.crosshair.select('#crosshair-line-x')
.attr('x1', xPosition)
.attr('x2', xPosition);
this.crosshair.select('#crosshair-line-y')
.attr('y1', yPosition)
.attr('y2', yPosition);
return;
default:
throw new Error(`Unknown type of crosshair orientaion: ${this.options.crosshair.orientation}`);
}
}
moveCrosshairCircle(xPosition: number, yPosition: number, serieIdx: number): void {
this.crosshair.selectAll(`.crosshair-circle-${serieIdx}`)
.attr('cx', xPosition)
.attr('cy', yPosition)
.style('display', null);
}
hideCrosshairCircle(serieIdx: number): void {
// hide circle for singe serie
this.crosshair.selectAll(`.crosshair-circle-${serieIdx}`)
.style('display', 'none');
}
getClosestDatapoint(serie: LineTimeSerie, xValue: number, yValue: number): [number, number] {
// get closest datapoint to the "xValue"/"yValue" in the "serie"
const datapoints = serie.datapoints;
const closestIdx = this.getClosestIndex(datapoints, xValue, yValue);
const datapoint = serie.datapoints[closestIdx];
return datapoint;
}
getClosestIndex(datapoints: [number, number][], xValue: number, yValue: number): number {
let columnIdx; // 0 for y value, 1 for x value
let value; // xValue ot y Value
switch(this.options.crosshair.orientation) {
case CrosshairOrientation.HORIZONTAL:
columnIdx = 0;
value = yValue;
break;
case CrosshairOrientation.VERTICAL:
columnIdx = 1;
value = xValue;
break;
case CrosshairOrientation.BOTH:
// TODO: maybe use voronoi
columnIdx = 0;
value = yValue;
default:
throw new Error(`Unknown type of crosshair orientaion: ${this.options.crosshair.orientation}`);
}
// TODO: d3.bisect is not the best way. Use binary search
const bisectIndex = this.d3.bisector((d: [number, number]) => d[columnIdx]).left;
let closestIdx = bisectIndex(datapoints, value);
// TODO: refactor corner cases
if(closestIdx < 0) {
return 0;
}
if(closestIdx >= datapoints.length) {
return datapoints.length - 1;
}
// TODO: do we realy need it? Binary search should fix it
if(
closestIdx > 0 &&
Math.abs(value - datapoints[closestIdx - 1][columnIdx]) <
Math.abs(value - datapoints[closestIdx][columnIdx])
) {
closestIdx -= 1;
}
return closestIdx;
}
getValueInterval(columnIdx: number): number | undefined {
// columnIdx: 0 for y, 1 for x
// inverval: x/y value interval between data points
// TODO: move it to base/state instead of timeInterval
const intervals = _.map(this.series, serie => {
if(serie.datapoints.length < 2) {
return undefined;
}
const start = _.head(serie.datapoints)[columnIdx];
const end = _.last(serie.datapoints)[columnIdx];
const range = Math.abs(end - start);
const interval = range / (serie.datapoints.length - 1);
return interval;
});
return _.max(intervals);
}
onMouseMove(): void {
const eventX = this.d3.mouse(this.chartContainer.node())[0];
const eventY = this.d3.mouse(this.chartContainer.node())[1];
const xValue = this.xScale.invert(eventX); // mouse x position in xScale
const yValue = this.yScale.invert(eventY);
// TODO: isOutOfChart is a hack, use clip path correctly
if(this.isOutOfChart() === true) {
this.crosshair.style('display', 'none');
return;
}
this.moveCrosshairLine(eventX, eventY);
const datapoints = this.findAndHighlightDatapoints(xValue, yValue);
if(this.options.eventsCallbacks === undefined || this.options.eventsCallbacks.mouseMove === undefined) {
console.log('Mouse move, but there is no callback');
return;
}
// TDOO: is shift key pressed
// TODO: need to refactor this object
this.options.eventsCallbacks.mouseMove({
x: this.d3.event.pageX,
y: this.d3.event.pageY,
xVal: xValue,
yVal: yValue,
series: datapoints,
chartX: eventX,
chartWidth: this.width
});
}
findAndHighlightDatapoints(xValue: number, yValue: number): { value: [number, number], color: string, label: string }[] {
if(this.series === undefined || this.series.length === 0) {
return [];
}
let points = []; // datapoints in each metric that is closest to xValue/yValue position
this.series.forEach((serie: LineTimeSerie, serieIdx: number) => {
if(
serie.visible === false ||
_.includes(this.seriesTargetsWithBounds, serie.target)
) {
this.hideCrosshairCircle(serieIdx);
return;
}
const closestDatapoint = this.getClosestDatapoint(serie, xValue, yValue);
if(closestDatapoint === undefined || this.isOutOfRange(closestDatapoint, xValue, yValue, serie.useOutOfRange)) {
this.hideCrosshairCircle(serieIdx);
return;
}
const yPosition = this.yScale(closestDatapoint[0]);
const xPosition = this.xScale(closestDatapoint[1]);
this.moveCrosshairCircle(xPosition, yPosition, serieIdx);
points.push({
value: closestDatapoint,
color: this.getSerieColor(serieIdx),
label: serie.alias || serie.target
});
});
return points;
}
isOutOfRange(closestDatapoint: [number, number], xValue: number, yValue: number, useOutOfRange = true): boolean {
// find is mouse position more than xRange/yRange from closest point
// TODO: refactor getValueInterval to remove this!
if(useOutOfRange === false) {
return false;
}
let columnIdx; // 0 for y value, 1 for x value
let value; // xValue ot y Value
switch(this.options.crosshair.orientation) {
case CrosshairOrientation.HORIZONTAL:
columnIdx = 0;
value = yValue;
break;
case CrosshairOrientation.VERTICAL:
columnIdx = 1;
value = xValue;
break;
case CrosshairOrientation.BOTH:
// TODO: maybe use voronoi
columnIdx = 0;
value = yValue;
default:
throw new Error(`Unknown type of crosshair orientaion: ${this.options.crosshair.orientation}`);
}
const range = Math.abs(closestDatapoint[columnIdx] - value);
const interval = this.getValueInterval(columnIdx); // interval between points
// do not move crosshair circles, it mouse to far from closest point
return interval === undefined || range > interval / 2;
}
onMouseOver(): void {
this.crosshair.style('display', null);
this.crosshair.selectAll('.crosshair-circle')
.style('display', null);
}
onMouseOut(): void {
if(this.options.eventsCallbacks !== undefined && this.options.eventsCallbacks.mouseOut !== undefined) {
this.options.eventsCallbacks.mouseOut();
}
this.crosshair.style('display', 'none');
}
}
// it is used with Vue.component, e.g.: Vue.component('chartwerk-line-chart', VueChartwerkLineChartObject)
export const VueChartwerkLineChartObject = {
// alternative to `template: '<div class="chartwerk-line-chart" :id="id" />'`
render(createElement) {
return createElement(
'div',
{
class: { 'chartwerk-line-chart': true },
attrs: { id: this.id }
}
);
},
mixins: [VueChartwerkPodMixin],
methods: {
render() {
if(this.pod === undefined) {
this.pod = new ChartwerkLineChart(document.getElementById(this.id), this.series, this.options);
this.pod.render();
} else {
this.pod.updateData(this.series, this.options);
}
},
renderSharedCrosshair(values) {
this.pod.renderSharedCrosshair(values);
},
hideSharedCrosshair() {
this.pod.hideSharedCrosshair();
}
}
};
export { LineTimeSerie, LineOptions, Mode, TickOrientation, TimeFormat };

16
src/types.ts
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import { TimeSerie, Options } from '@chartwerk/core';
type LineTimeSerieParams = {
confidence: number,
mode: Mode,
maxLength: number,
renderDots: boolean,
renderLines: boolean, // TODO: refactor same as scatter-pod
useOutOfRange: boolean, // It's temporary hack. Need to refactor getValueInterval() method
}
export enum Mode {
STANDARD = 'Standard',
CHARGE = 'Charge'
}
export type LineTimeSerie = TimeSerie & Partial<LineTimeSerieParams>;
export type LineOptions = Options;

22
tsconfig.json
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@ -0,0 +1,22 @@
{
"compilerOptions": {
"target": "es5",
"rootDir": "./src",
"module": "esnext",
"moduleResolution": "node",
"declaration": true,
"declarationDir": "dist",
"allowSyntheticDefaultImports": true,
"inlineSourceMap": false,
"sourceMap": true,
"noEmitOnError": false,
"emitDecoratorMetadata": false,
"experimentalDecorators": true,
"noImplicitReturns": true,
"noImplicitThis": false,
"noImplicitUseStrict": false,
"noImplicitAny": false,
"noUnusedLocals": false,
"baseUrl": "./src"
}
}
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