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| let shortName = this.constant.periodTypeEnum.getNameByCode(this.klineType) + ' 合约2：' + this.currentInstrumentId
this.chart.addTechnicalIndicatorTemplate({
name: 'custom_candle_solid',
shortName: shortName,
precision: 2,
bar: {
upColor: '#EF5350',
downColor: '#26A69A',
noChangeColor: '#888889'
},
plots: [
{ key: 'open', title: '开: ' },
{ key: 'close', title: '收: ' },
{ key: 'high', title: '高: ' },
{ key: 'low', title: '低: ' }
],
calcTechnicalIndicator: (dataList, { params, plots }) => {
return dataList.map((kLineData, i) => {
return {
instrumentId: kLineData.instrumentId,
timestamp: getDateTime(new Date(kLineData.timestamp)),
open: kLineData.open,
close: kLineData.close,
high: kLineData.high,
low: kLineData.low
}
})
},
render: ({ ctx, dataSource, viewport, styles, xAxis, yAxis }) => {
let x = xAxis.convertToPixel(0)
dataSource.technicalIndicatorDataList.forEach(function (kLineData, i) {
let open = kLineData.open
let close = kLineData.close
let high = kLineData.high
let low = kLineData.low
if (close > open) {
ctx.strokeStyle = '#EF5350'
ctx.fillStyle = '#EF5350'
} else if (close < open) {
ctx.strokeStyle = '#26A69A'
ctx.fillStyle = '#26A69A'
} else {
ctx.strokeStyle = '#888889'
ctx.fillStyle = '#888889'
}
let openY = yAxis.convertToPixel(open)
let closeY = yAxis.convertToPixel(close)
let priceY = [openY, closeY, yAxis.convertToPixel(high), yAxis.convertToPixel(low)]
priceY.sort(function (a, b) {
return a - b
})
ctx.fillRect(x - 0.5, priceY[0], 1, priceY[1] - priceY[0])
ctx.fillRect(x - 0.5, priceY[2], 1, priceY[3] - priceY[2])
var barHeight = Math.max(1, priceY[2] - priceY[1])
ctx.fillRect(x - (viewport.barSpace / 2), priceY[1], viewport.barSpace, barHeight)
x += viewport.dataSpace
})
}
})
|
