e4459208d2
- Added `trend_line` and `ray_line` to the Common Methods.
- Added the `toolbox` parameter to chart declaration. This allows horizontal lines, trend lines and rays to be drawn on the chart using hotkeys and buttons.
- cmd-Z will delete the last drawing.
- Drawings can be moved by clicking and dragging.
- Added the `render_drawings` parameter to `set`, which will keep and re-render the drawings displayed on the chart (useful for multiple timeframes!)
Horizontal Lines
- The `horizontal_line` method now returns a HorizontalLine object, containing the methods `update` and `delete`.
- Added the `interactive` parameter to `horizontal_line`, allowing for callbacks to be emitted to the `on_horizontal_line_move` callback method when the line is dragged to a new price (stop losses, limit orders, etc.).
Enhancements:
- added the `precision` method to the Common Methods, allowing for the number of decimal places shown on the price scale to be declared.
- Lines displayed on legends now have toggle switches, allowing for their visibility to be controlled directly within the chart window.
- when using `set`, the column names can now be capitalised, and the `date` column can be the index.
Changes:
- Merged the `title` method into the `price_line` method.
484 lines
25 KiB
JavaScript
484 lines
25 KiB
JavaScript
if (!window.ToolBox) {
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class ToolBox {
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constructor(chart) {
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this.onTrendSelect = this.onTrendSelect.bind(this)
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this.onHorzSelect = this.onHorzSelect.bind(this)
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this.onRaySelect = this.onRaySelect.bind(this)
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this.chart = chart
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this.drawings = []
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this.chart.cursor = 'default'
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this.makingDrawing = false
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this.interval = 24 * 60 * 60 * 1000
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this.activeBackgroundColor = 'rgba(0, 122, 255, 0.7)'
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this.activeIconColor = 'rgb(240, 240, 240)'
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this.iconColor = 'lightgrey'
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this.backgroundColor = 'transparent'
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this.hoverColor = 'rgba(60, 60, 60, 0.7)'
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this.elem = this.makeToolBox()
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this.subscribeHoverMove()
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}
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makeToolBox() {
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let toolBoxElem = document.createElement('div')
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toolBoxElem.style.position = 'absolute'
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toolBoxElem.style.zIndex = '2000'
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toolBoxElem.style.display = 'flex'
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toolBoxElem.style.alignItems = 'center'
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toolBoxElem.style.top = '25%'
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toolBoxElem.style.borderRight = '2px solid #3C434C'
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toolBoxElem.style.borderTop = '2px solid #3C434C'
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toolBoxElem.style.borderBottom = '2px solid #3C434C'
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toolBoxElem.style.borderTopRightRadius = '4px'
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toolBoxElem.style.borderBottomRightRadius = '4px'
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toolBoxElem.style.backgroundColor = 'rgba(25, 27, 30, 0.5)'
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toolBoxElem.style.flexDirection = 'column'
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this.chart.activeIcon = null
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let trend = this.makeToolBoxElement(this.onTrendSelect, 'KeyT', `<rect x="3.84" y="13.67" transform="matrix(0.7071 -0.7071 0.7071 0.7071 -5.9847 14.4482)" width="21.21" height="1.56"/><path d="M23,3.17L20.17,6L23,8.83L25.83,6L23,3.17z M23,7.41L21.59,6L23,4.59L24.41,6L23,7.41z"/><path d="M6,20.17L3.17,23L6,25.83L8.83,23L6,20.17z M6,24.41L4.59,23L6,21.59L7.41,23L6,24.41z"/>`)
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let horz = this.makeToolBoxElement(this.onHorzSelect, 'KeyH', `<rect x="4" y="14" width="9" height="1"/><rect x="16" y="14" width="9" height="1"/><path d="M11.67,14.5l2.83,2.83l2.83-2.83l-2.83-2.83L11.67,14.5z M15.91,14.5l-1.41,1.41l-1.41-1.41l1.41-1.41L15.91,14.5z"/>`)
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let ray = this.makeToolBoxElement(this.onRaySelect, 'KeyR', `<rect x="8" y="14" width="17" height="1"/><path d="M3.67,14.5l2.83,2.83l2.83-2.83L6.5,11.67L3.67,14.5z M7.91,14.5L6.5,15.91L5.09,14.5l1.41-1.41L7.91,14.5z"/>`)
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//let testB = this.makeToolBoxElement(this.onTrendSelect, `<rect x="8" y="6" width="12" height="1"/><rect x="9" y="22" width="11" height="1"/><path d="M3.67,6.5L6.5,9.33L9.33,6.5L6.5,3.67L3.67,6.5z M7.91,6.5L6.5,7.91L5.09,6.5L6.5,5.09L7.91,6.5z"/><path d="M19.67,6.5l2.83,2.83l2.83-2.83L22.5,3.67L19.67,6.5z M23.91,6.5L22.5,7.91L21.09,6.5l1.41-1.41L23.91,6.5z"/><path d="M19.67,22.5l2.83,2.83l2.83-2.83l-2.83-2.83L19.67,22.5z M23.91,22.5l-1.41,1.41l-1.41-1.41l1.41-1.41L23.91,22.5z"/><path d="M3.67,22.5l2.83,2.83l2.83-2.83L6.5,19.67L3.67,22.5z M7.91,22.5L6.5,23.91L5.09,22.5l1.41-1.41L7.91,22.5z"/><rect x="22" y="9" width="1" height="11"/><rect x="6" y="9" width="1" height="11"/>`)
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toolBoxElem.appendChild(trend)
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toolBoxElem.appendChild(horz)
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toolBoxElem.appendChild(ray)
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//toolBoxElem.appendChild(testB)
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this.chart.div.append(toolBoxElem)
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let commandZHandler = (toDelete) => {
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if (!toDelete) return
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if ('price' in toDelete) {
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if (toDelete.id !== 'toolBox') return commandZHandler(this.drawings[this.drawings.indexOf(toDelete) - 1])
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this.chart.series.removePriceLine(toDelete.line)
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} else {
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let logical
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if (toDelete.ray) logical = this.chart.chart.timeScale().getVisibleLogicalRange()
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this.chart.chart.removeSeries(toDelete.line);
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if (toDelete.ray) this.chart.chart.timeScale().setVisibleLogicalRange(logical)
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}
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this.drawings.splice(this.drawings.length - 1)
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}
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this.chart.commandFunctions.push((event) => {
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if (event.metaKey && event.code === 'KeyZ') {
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commandZHandler(this.drawings[this.drawings.length - 1])
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return true
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}
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});
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return toolBoxElem
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}
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makeToolBoxElement(action, keyCmd, paths) {
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let elem = document.createElement('div')
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elem.style.margin = '3px'
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elem.style.borderRadius = '4px'
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elem.style.display = 'flex'
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let svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
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svg.setAttribute("width", "29");
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svg.setAttribute("height", "29");
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let group = document.createElementNS("http://www.w3.org/2000/svg", "g");
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group.innerHTML = paths
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group.setAttribute("fill", this.iconColor)
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svg.appendChild(group)
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elem.appendChild(svg);
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elem.addEventListener('mouseenter', () => {
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elem.style.backgroundColor = elem === this.chart.activeIcon ? this.activeBackgroundColor : this.hoverColor
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document.body.style.cursor = 'pointer'
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})
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elem.addEventListener('mouseleave', () => {
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elem.style.backgroundColor = elem === this.chart.activeIcon ? this.activeBackgroundColor : this.backgroundColor
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document.body.style.cursor = this.chart.cursor
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})
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elem.addEventListener('click', () => {
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if (this.chart.activeIcon) {
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this.chart.activeIcon.style.backgroundColor = this.backgroundColor
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group.setAttribute("fill", this.iconColor)
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document.body.style.cursor = 'crosshair'
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this.chart.cursor = 'crosshair'
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action(false)
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}
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if (this.chart.activeIcon === elem) {
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this.chart.activeIcon = null
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return
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}
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this.chart.activeIcon = elem
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group.setAttribute("fill", this.activeIconColor)
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elem.style.backgroundColor = this.activeBackgroundColor
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document.body.style.cursor = 'crosshair'
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this.chart.cursor = 'crosshair'
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action(true)
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})
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this.chart.commandFunctions.push((event) => {
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if (event.altKey && event.code === keyCmd) {
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if (this.chart.activeIcon) {
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this.chart.activeIcon.style.backgroundColor = this.backgroundColor
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group.setAttribute("fill", this.iconColor)
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document.body.style.cursor = 'crosshair'
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this.chart.cursor = 'crosshair'
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action(false)
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}
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this.chart.activeIcon = elem
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group.setAttribute("fill", this.activeIconColor)
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elem.style.backgroundColor = this.activeBackgroundColor
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document.body.style.cursor = 'crosshair'
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this.chart.cursor = 'crosshair'
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action(true)
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return true
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}
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})
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return elem
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}
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onTrendSelect(toggle, ray = false) {
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let trendLine = {
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line: null,
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markers: null,
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data: null,
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from: null,
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to: null,
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ray: ray,
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}
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let firstTime = null
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let firstPrice = null
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let currentTime = null
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if (!toggle) {
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this.chart.chart.unsubscribeClick(this.chart.clickHandler)
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return
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}
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let crosshairHandlerTrend = (param) => {
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this.chart.chart.unsubscribeCrosshairMove(crosshairHandlerTrend)
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if (!this.makingDrawing) return
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let logical
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let lastCandleTime = this.chart.candleData[this.chart.candleData.length - 1].time
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currentTime = this.chart.chart.timeScale().coordinateToTime(param.point.x)
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if (!currentTime) {
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let barsToMove = param.logical - this.chart.chart.timeScale().coordinateToLogical(this.chart.chart.timeScale().timeToCoordinate(lastCandleTime))
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logical = barsToMove <= 0 ? null : this.chart.chart.timeScale().getVisibleLogicalRange()
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currentTime = dateToChartTime(new Date(chartTimeToDate(this.chart.candleData[this.chart.candleData.length - 1].time).getTime() + (barsToMove * this.interval)), this.interval)
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} else if (chartTimeToDate(lastCandleTime).getTime() <= chartTimeToDate(currentTime).getTime()) {
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logical = this.chart.chart.timeScale().getVisibleLogicalRange()
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}
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let currentPrice = this.chart.series.coordinateToPrice(param.point.y)
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if (!currentTime) return this.chart.chart.subscribeCrosshairMove(crosshairHandlerTrend)
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trendLine.data = calculateTrendLine(firstTime, firstPrice, currentTime, currentPrice, this.interval, this.chart, ray)
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trendLine.from = trendLine.data[0].time
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trendLine.to = trendLine.data[trendLine.data.length - 1].time
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if (ray) logical = this.chart.chart.timeScale().getVisibleLogicalRange()
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trendLine.line.setData(trendLine.data)
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if (logical) {
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this.chart.chart.applyOptions({handleScroll: true})
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setTimeout(() => {
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this.chart.chart.timeScale().setVisibleLogicalRange(logical)
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}, 1)
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setTimeout(() => {
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this.chart.chart.applyOptions({handleScroll: false})
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}, 50)
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}
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if (!ray) {
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trendLine.markers = [
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{time: firstTime, position: 'inBar', color: '#1E80F0', shape: 'circle', size: 0.1},
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{time: currentTime, position: 'inBar', color: '#1E80F0', shape: 'circle', size: 0.1}
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]
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trendLine.line.setMarkers(trendLine.markers)
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}
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setTimeout(() => {
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this.chart.chart.subscribeCrosshairMove(crosshairHandlerTrend)
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}, 10);
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}
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this.chart.clickHandler = (param) => {
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if (!this.makingDrawing) {
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this.makingDrawing = true
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trendLine.line = this.chart.chart.addLineSeries({
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lineWidth: 2,
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lastValueVisible: false,
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priceLineVisible: false,
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crosshairMarkerVisible: false,
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autoscaleInfoProvider: () => ({
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priceRange: {
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minValue: 1_000_000_000,
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maxValue: 0,
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},
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}),
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})
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firstPrice = this.chart.series.coordinateToPrice(param.point.y)
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firstTime = !ray ? this.chart.chart.timeScale().coordinateToTime(param.point.x) : this.chart.candleData[this.chart.candleData.length - 1].time
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this.chart.chart.applyOptions({
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handleScroll: false
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})
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this.chart.chart.subscribeCrosshairMove(crosshairHandlerTrend)
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} else {
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this.chart.chart.applyOptions({
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handleScroll: true
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})
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this.makingDrawing = false
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trendLine.line.setMarkers([])
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this.drawings.push(trendLine)
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this.chart.chart.unsubscribeCrosshairMove(crosshairHandlerTrend)
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this.chart.chart.unsubscribeClick(this.chart.clickHandler)
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document.body.style.cursor = 'default'
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this.chart.cursor = 'default'
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this.chart.activeIcon.style.backgroundColor = this.backgroundColor
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this.chart.activeIcon = null
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}
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}
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this.chart.chart.subscribeClick(this.chart.clickHandler)
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}
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onHorzSelect(toggle) {
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let clickHandlerHorz = (param) => {
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let price = this.chart.series.coordinateToPrice(param.point.y)
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let lineStyle = LightweightCharts.LineStyle.Solid
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let line = new HorizontalLine(this.chart, 'toolBox', price, null, 2, lineStyle, true)
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this.drawings.push(line)
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this.chart.chart.unsubscribeClick(clickHandlerHorz)
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document.body.style.cursor = 'default'
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this.chart.cursor = 'default'
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this.chart.activeIcon.style.backgroundColor = this.backgroundColor
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this.chart.activeIcon = null
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}
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this.chart.chart.subscribeClick(clickHandlerHorz)
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}
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onRaySelect(toggle) {
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this.onTrendSelect(toggle, true)
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}
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subscribeHoverMove() {
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let hoveringOver = null
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let x, y
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let hoverOver = (param) => {
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if (!param.point || this.makingDrawing) return
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this.chart.chart.unsubscribeCrosshairMove(hoverOver)
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x = param.point.x
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y = param.point.y
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this.drawings.forEach((drawing) => {
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let boundaryConditional
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let horizontal = false
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if ('price' in drawing) {
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horizontal = true
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let priceCoordinate = this.chart.series.priceToCoordinate(drawing.price)
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boundaryConditional = Math.abs(priceCoordinate - param.point.y) < 6
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} else {
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let trendData = param.seriesData.get(drawing.line);
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if (!trendData) return
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let priceCoordinate = this.chart.series.priceToCoordinate(trendData.value)
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let timeCoordinate = this.chart.chart.timeScale().timeToCoordinate(trendData.time)
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boundaryConditional = Math.abs(priceCoordinate - param.point.y) < 6 && Math.abs(timeCoordinate - param.point.x) < 6
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}
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if (boundaryConditional) {
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if (hoveringOver === drawing) return
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if (!horizontal && !drawing.ray) drawing.line.setMarkers(drawing.markers)
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document.body.style.cursor = 'pointer'
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document.addEventListener('mousedown', checkForClick)
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document.addEventListener('mouseup', checkForRelease)
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hoveringOver = drawing
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} else if (hoveringOver === drawing) {
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if (!horizontal && !drawing.ray) drawing.line.setMarkers([])
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document.body.style.cursor = this.chart.cursor
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hoveringOver = null
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}
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})
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this.chart.chart.subscribeCrosshairMove(hoverOver)
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}
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let originalIndex
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let originalTime
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let originalPrice
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let mouseDown = false
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let clickedEnd = false
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let checkForClick = (event) => {
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//if (!hoveringOver) return
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mouseDown = true
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document.body.style.cursor = 'grabbing'
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this.chart.chart.applyOptions({
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handleScroll: false
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})
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this.chart.chart.unsubscribeCrosshairMove(hoverOver)
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// let [x, y] = [event.clientX, event.clientY]
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// if ('topBar' in this.chart) y = y - this.chart.topBar.offsetHeight
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if ('price' in hoveringOver) {
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originalPrice = hoveringOver.price
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this.chart.chart.subscribeCrosshairMove(crosshairHandlerHorz)
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} else if (Math.abs(this.chart.chart.timeScale().timeToCoordinate(hoveringOver.data[0].time) - x) < 4 && !hoveringOver.ray) {
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clickedEnd = 'first'
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this.chart.chart.subscribeCrosshairMove(crosshairHandlerTrend)
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} else if (Math.abs(this.chart.chart.timeScale().timeToCoordinate(hoveringOver.data[hoveringOver.data.length - 1].time) - x) < 4 && !hoveringOver.ray) {
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clickedEnd = 'last'
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this.chart.chart.subscribeCrosshairMove(crosshairHandlerTrend)
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} else {
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originalPrice = this.chart.series.coordinateToPrice(y)
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originalTime = this.chart.chart.timeScale().coordinateToTime(x * this.chart.scale.width)
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this.chart.chart.subscribeCrosshairMove(checkForDrag)
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}
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originalIndex = this.chart.chart.timeScale().coordinateToLogical(x)
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this.chart.chart.unsubscribeClick(checkForClick)
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}
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let checkForRelease = (event) => {
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mouseDown = false
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document.body.style.cursor = 'pointer'
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this.chart.chart.applyOptions({handleScroll: true})
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if (hoveringOver && 'price' in hoveringOver && hoveringOver.id !== 'toolBox') {
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this.chart.callbackFunction(`on_horizontal_line_move__${this.chart.id}__${hoveringOver.id};;;${hoveringOver.price.toFixed(8)}`);
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}
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hoveringOver = null
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document.removeEventListener('mousedown', checkForClick)
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document.removeEventListener('mouseup', checkForRelease)
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this.chart.chart.subscribeCrosshairMove(hoverOver)
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}
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let checkForDrag = (param) => {
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if (!param.point) return
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this.chart.chart.unsubscribeCrosshairMove(checkForDrag)
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if (!mouseDown) return
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let priceAtCursor = this.chart.series.coordinateToPrice(param.point.y)
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let priceDiff = priceAtCursor - originalPrice
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let barsToMove = param.logical - originalIndex
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let startBarIndex = this.chart.candleData.findIndex(item => chartTimeToDate(item.time).getTime() === chartTimeToDate(hoveringOver.data[0].time).getTime())
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let endBarIndex = this.chart.candleData.findIndex(item => chartTimeToDate(item.time).getTime() === chartTimeToDate(hoveringOver.data[hoveringOver.data.length - 1].time).getTime())
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let startBar
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let endBar
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if (hoveringOver.ray) {
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endBar = this.chart.candleData[startBarIndex + barsToMove]
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startBar = hoveringOver.data[hoveringOver.data.length - 1]
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} else {
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startBar = this.chart.candleData[startBarIndex + barsToMove]
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endBar = endBarIndex === -1 ? null : this.chart.candleData[endBarIndex + barsToMove]
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}
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let endDate = endBar ? endBar.time : dateToChartTime(new Date(chartTimeToDate(hoveringOver.data[hoveringOver.data.length - 1].time).getTime() + (barsToMove * this.interval)), this.interval)
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let startDate = startBar.time
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let startValue = hoveringOver.data[0].value + priceDiff
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let endValue = hoveringOver.data[hoveringOver.data.length - 1].value + priceDiff
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hoveringOver.data = calculateTrendLine(startDate, startValue, endDate, endValue, this.interval, this.chart, hoveringOver.ray)
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let logical
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if (chartTimeToDate(hoveringOver.data[hoveringOver.data.length - 1].time).getTime() >= chartTimeToDate(this.chart.candleData[this.chart.candleData.length - 1].time).getTime()) {
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logical = this.chart.chart.timeScale().getVisibleLogicalRange()
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|
}
|
|
hoveringOver.from = hoveringOver.data[0].time
|
|
hoveringOver.to = hoveringOver.data[hoveringOver.data.length - 1].time
|
|
hoveringOver.line.setData(hoveringOver.data)
|
|
if (logical) this.chart.chart.timeScale().setVisibleLogicalRange(logical)
|
|
|
|
if (!hoveringOver.ray) {
|
|
hoveringOver.markers = [
|
|
{time: startDate, position: 'inBar', color: '#1E80F0', shape: 'circle', size: 0.1},
|
|
{time: endDate, position: 'inBar', color: '#1E80F0', shape: 'circle', size: 0.1}
|
|
]
|
|
hoveringOver.line.setMarkers(hoveringOver.markers)
|
|
}
|
|
|
|
originalIndex = param.logical
|
|
originalPrice = priceAtCursor
|
|
this.chart.chart.subscribeCrosshairMove(checkForDrag)
|
|
}
|
|
let crosshairHandlerTrend = (param) => {
|
|
if (!param.point) return
|
|
this.chart.chart.unsubscribeCrosshairMove(crosshairHandlerTrend)
|
|
if (!mouseDown) return
|
|
|
|
let currentPrice = this.chart.series.coordinateToPrice(param.point.y)
|
|
let currentTime = this.chart.chart.timeScale().coordinateToTime(param.point.x)
|
|
|
|
let [firstTime, firstPrice] = [null, null]
|
|
if (clickedEnd === 'last') {
|
|
firstTime = hoveringOver.data[0].time
|
|
firstPrice = hoveringOver.data[0].value
|
|
} else if (clickedEnd === 'first') {
|
|
firstTime = hoveringOver.data[hoveringOver.data.length - 1].time
|
|
firstPrice = hoveringOver.data[hoveringOver.data.length - 1].value
|
|
}
|
|
|
|
let logical
|
|
let lastCandleTime = this.chart.candleData[this.chart.candleData.length - 1].time
|
|
if (!currentTime) {
|
|
let barsToMove = param.logical - this.chart.chart.timeScale().coordinateToLogical(this.chart.chart.timeScale().timeToCoordinate(lastCandleTime))
|
|
logical = barsToMove <= 0 ? null : this.chart.chart.timeScale().getVisibleLogicalRange()
|
|
currentTime = dateToChartTime(new Date(chartTimeToDate(this.chart.candleData[this.chart.candleData.length - 1].time).getTime() + (barsToMove * this.interval)), this.interval)
|
|
} else if (chartTimeToDate(lastCandleTime).getTime() <= chartTimeToDate(currentTime).getTime()) {
|
|
logical = this.chart.chart.timeScale().getVisibleLogicalRange()
|
|
}
|
|
|
|
hoveringOver.data = calculateTrendLine(firstTime, firstPrice, currentTime, currentPrice, this.interval, this.chart)
|
|
hoveringOver.line.setData(hoveringOver.data)
|
|
|
|
hoveringOver.from = hoveringOver.data[0].time
|
|
hoveringOver.to = hoveringOver.data[hoveringOver.data.length - 1].time
|
|
if (logical) this.chart.chart.timeScale().setVisibleLogicalRange(logical)
|
|
|
|
hoveringOver.markers = [
|
|
{time: firstTime, position: 'inBar', color: '#1E80F0', shape: 'circle', size: 0.1},
|
|
{time: currentTime, position: 'inBar', color: '#1E80F0', shape: 'circle', size: 0.1}
|
|
]
|
|
hoveringOver.line.setMarkers(hoveringOver.markers)
|
|
|
|
setTimeout(() => {
|
|
this.chart.chart.subscribeCrosshairMove(crosshairHandlerTrend)
|
|
}, 10);
|
|
}
|
|
let crosshairHandlerHorz = (param) => {
|
|
if (!param.point) return
|
|
this.chart.chart.unsubscribeCrosshairMove(crosshairHandlerHorz)
|
|
if (!mouseDown) return
|
|
hoveringOver.updatePrice(this.chart.series.coordinateToPrice(param.point.y))
|
|
setTimeout(() => {
|
|
this.chart.chart.subscribeCrosshairMove(crosshairHandlerHorz)
|
|
}, 10)
|
|
}
|
|
this.chart.chart.subscribeCrosshairMove(hoverOver)
|
|
}
|
|
|
|
renderDrawings() {
|
|
//let logical = this.chart.chart.timeScale().getVisibleLogicalRange()
|
|
this.drawings.forEach((item) => {
|
|
if ('price' in item) return
|
|
let startDate = dateToChartTime(new Date(Math.round(chartTimeToDate(item.from).getTime() / this.interval) * this.interval), this.interval)
|
|
let endDate = dateToChartTime(new Date(Math.round(chartTimeToDate(item.to).getTime() / this.interval) * this.interval), this.interval)
|
|
let data = calculateTrendLine(startDate, item.data[0].value, endDate, item.data[item.data.length - 1].value, this.interval, this.chart, item.ray)
|
|
if (data.length !== 0) item.data = data
|
|
item.line.setData(data)
|
|
})
|
|
//this.chart.chart.timeScale().setVisibleLogicalRange(logical)
|
|
}
|
|
|
|
clearDrawings() {
|
|
this.drawings.forEach((item) => {
|
|
if ('price' in item) this.chart.series.removePriceLine(item.line)
|
|
else this.chart.chart.removeSeries(item.line)
|
|
})
|
|
this.drawings = []
|
|
}
|
|
}
|
|
|
|
window.ToolBox = ToolBox
|
|
} |