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refactor TradingViewChart

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c9s 2022-06-27 16:24:00 +08:00
parent ec3ac4e077
commit a90b6bd1f5
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1 changed files with 28 additions and 20 deletions
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48
apps/backtest-report/components/TradingViewChart.tsx
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@ -1,11 +1,11 @@
import React, {useEffect, useRef, useState} from 'react';
import {tsvParse} from "d3-dsv";
import {Checkbox, Group, SegmentedControl, Table} from '@mantine/core';
import {Checkbox, Group, SegmentedControl} from '@mantine/core';
// https://github.com/tradingview/lightweight-charts/issues/543
// const createChart = dynamic(() => import('lightweight-charts'));
import {createChart, CrosshairMode, MouseEventParams, TimeRange} from 'lightweight-charts';
import {ReportSummary, Order} from "../types";
import {Order, ReportSummary} from "../types";
import moment from "moment";
import {format} from 'date-fns';
@ -459,26 +459,14 @@ const TradingViewChart = (props: TradingViewChartProps) => {
});
emaLine.setData(emaValues);
const legend = document.createElement('div');
legend.className = 'ema-legend';
legend.style.display = 'block';
legend.style.position = 'absolute';
legend.style.left = 3 + 'px';
legend.style.zIndex = '99';
legend.style.top = 3 + (i * 22) + 'px';
const legend = createLegend(i, emaColor)
chartContainerRef.current.appendChild(legend);
const setLegendText = (priceValue: any) => {
let val = '∅';
if (priceValue !== undefined) {
val = (Math.round(priceValue * 100) / 100).toFixed(2);
}
legend.innerHTML = 'EMA' + w + ' <span style="color:' + emaColor + '">' + val + '</span>';
}
const updateLegendText = createLegendUpdater(legend, 'EMA ' + w)
setLegendText(emaValues[emaValues.length - 1].value);
updateLegendText(emaValues[emaValues.length - 1].value);
chart.current.subscribeCrosshairMove((param: MouseEventParams) => {
setLegendText(param.seriesPrices.get(emaLine));
updateLegendText(param.seriesPrices.get(emaLine));
});
})
@ -583,7 +571,7 @@ const TradingViewChart = (props: TradingViewChartProps) => {
<TimeRangeSlider
selectedInterval={selectedTimeRange}
timelineInterval={timeRange}
formatTick={(ms : Date) => format(new Date(ms), 'M d HH')}
formatTick={(ms: Date) => format(new Date(ms), 'M d HH')}
step={1000 * parseInterval(currentInterval)}
onChange={(tr: any) => {
console.log("selectedTimeRange", tr)
@ -627,6 +615,26 @@ const calculateEMA = (a: KLine[], r: number) => {
}])
}
const createLegend = (i: number, color: string) => {
const legend = document.createElement('div');
legend.className = 'ema-legend';
legend.style.display = 'block';
legend.style.position = 'absolute';
legend.style.left = 3 + 'px';
legend.style.color = color;
legend.style.zIndex = '99';
legend.style.top = 3 + (i * 22) + 'px';
return legend;
}
const createLegendUpdater = (legend: HTMLDivElement, prefix: string) => {
return (priceValue: any) => {
let val = '-';
if (priceValue !== undefined) {
val = (Math.round(priceValue * 100) / 100).toFixed(2);
}
legend.innerHTML = prefix + ' <span>' + val + '</span>';
}
}
export default TradingViewChart;