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{ deepMix, find, flatten, get, isArray, isEqual, isFunction, isUndefined, mix } from '@antv/util';\nimport { Crosshair, HtmlTooltip, IGroup } from '../../dependents';\nimport Geometry from '../../geometry/base';\nimport { Point, TooltipOption } from '../../interface';\nimport { getAngleByPoint, getDistanceToCenter, isPointInCoordinate } from '../../util/coordinate';\nimport { polarToCartesian } from '../../util/graphics';\nimport { findDataByPoint, getTooltipItems } from '../../util/tooltip';\nimport { Controller } from './base';\n\n// Filter duplicates, use `name`, `color`, `value` and `title` property values as condition\nfunction uniq(items) {\n const uniqItems = [];\n for (let index = 0; index < items.length; index++) {\n const item = items[index];\n const result = find(uniqItems, (subItem) => {\n return (\n subItem.color === item.color &&\n subItem.name === item.name &&\n subItem.value === item.value &&\n subItem.title === item.title\n );\n });\n if (!result) {\n uniqItems.push(item);\n }\n }\n return uniqItems;\n}\n\n/** @ignore */\nexport default class Tooltip extends Controller {\n private tooltip;\n private tooltipMarkersGroup: IGroup;\n private tooltipCrosshairsGroup: IGroup;\n private xCrosshair;\n private yCrosshair;\n private guideGroup: IGroup;\n\n private isLocked: boolean = false;\n private isVisible: boolean = true;\n private items;\n private title: string;\n private point: Point;\n\n public get name(): string {\n return 'tooltip';\n }\n\n public init() { }\n\n public render() {\n const option = this.view.getOptions().tooltip;\n this.isVisible = option !== false;\n }\n\n /**\n * Shows tooltip\n * @param point\n */\n public showTooltip(point: Point) {\n this.point = point;\n if (!this.isVisible) { // 如果设置 tooltip(false) 则始终不显示\n return;\n }\n const view = this.view;\n const items = this.getTooltipItems(point);\n if (!items.length) {\n // 无内容则不展示，同时 tooltip 需要隐藏\n this.hideTooltip();\n return;\n }\n const title = this.getTitle(items);\n const dataPoint = {\n x: items[0].x,\n y: items[0].y,\n }; // 数据点位置\n\n view.emit('tooltip:show', {\n items,\n title,\n ...point,\n });\n\n const cfg = this.getTooltipCfg();\n const { follow, showMarkers, showCrosshairs, showContent, marker } = cfg;\n const lastItems = this.items;\n const lastTitle = this.title;\n if (!isEqual(lastTitle, title) || !isEqual(lastItems, items)) {\n // 内容发生变化了更新 tooltip\n view.emit('tooltip:change', {\n items,\n title,\n ...point,\n });\n\n if (showContent) {\n // 展示 tooltip 内容框才渲染 tooltip\n if (!this.tooltip) {\n // 延迟生成\n this.renderTooltip();\n }\n this.tooltip.update(mix({}, cfg, {\n items,\n title,\n }, follow ? point : {}));\n this.tooltip.show();\n }\n\n if (showMarkers) {\n // 展示 tooltipMarkers，tooltipMarkers 跟随数据\n this.renderTooltipMarkers(items, marker);\n }\n } else {\n // 内容未发生变化，则更新位置\n if (this.tooltip && follow) {\n this.tooltip.update(point);\n this.tooltip.show(); // tooltip 有可能被隐藏，需要保证显示状态\n }\n\n if (this.tooltipMarkersGroup) {\n this.tooltipMarkersGroup.show();\n }\n }\n\n this.items = items;\n this.title = title;\n\n if (showCrosshairs) {\n // 展示 tooltip 辅助线\n const isCrosshairsFollowCursor = get(cfg, ['crosshairs', 'follow'], false); // 辅助线是否要跟随鼠标\n this.renderCrosshairs(isCrosshairsFollowCursor ? point : dataPoint, cfg);\n }\n }\n\n public hideTooltip() {\n const { follow } = this.getTooltipCfg();\n if (!follow) {\n this.point = null;\n return;\n }\n // hide the tooltipMarkers\n const tooltipMarkersGroup = this.tooltipMarkersGroup;\n if (tooltipMarkersGroup) {\n tooltipMarkersGroup.hide();\n }\n\n // hide crosshairs\n const xCrosshair = this.xCrosshair;\n const yCrosshair = this.yCrosshair;\n if (xCrosshair) {\n xCrosshair.hide();\n }\n if (yCrosshair) {\n yCrosshair.hide();\n }\n\n const tooltip = this.tooltip;\n if (tooltip) {\n tooltip.hide();\n }\n\n this.view.emit('tooltip:hide', {});\n this.point = null;\n }\n\n /**\n * lockTooltip\n */\n public lockTooltip() {\n this.isLocked = true;\n if (this.tooltip) {\n // tooltip contianer 可捕获事件\n this.tooltip.setCapture(true);\n }\n }\n\n /**\n * unlockTooltip\n */\n public unlockTooltip() {\n this.isLocked = false;\n const cfg = this.getTooltipCfg();\n if (this.tooltip) {\n // 重置 capture 属性\n this.tooltip.setCapture(cfg.capture);\n }\n }\n\n /**\n * isTooltipLocked\n */\n public isTooltipLocked() {\n return this.isLocked;\n }\n\n public clear() {\n const { tooltip, xCrosshair, yCrosshair, tooltipMarkersGroup } = this;\n if (tooltip) {\n tooltip.hide();\n tooltip.clear();\n }\n\n if (xCrosshair) {\n xCrosshair.clear();\n }\n\n if (yCrosshair) {\n yCrosshair.clear();\n }\n\n if (tooltipMarkersGroup) {\n tooltipMarkersGroup.clear();\n }\n }\n\n public destroy() {\n if (this.tooltip) {\n this.tooltip.destroy();\n }\n if (this.xCrosshair) {\n this.xCrosshair.destroy();\n }\n if (this.yCrosshair) {\n this.yCrosshair.destroy();\n }\n\n if (this.guideGroup) {\n this.guideGroup.remove(true);\n }\n\n this.items = null;\n this.title = null;\n this.tooltipMarkersGroup = null;\n this.tooltipCrosshairsGroup = null;\n this.xCrosshair = null;\n this.yCrosshair = null;\n this.tooltip = null;\n this.guideGroup = null;\n this.isLocked = false;\n this.point = null;\n }\n\n public changeVisible(visible: boolean) {\n if (this.visible === visible) {\n return;\n }\n const { tooltip, tooltipMarkersGroup, xCrosshair, yCrosshair } = this;\n if (visible) {\n if (tooltip) {\n tooltip.show();\n }\n if (tooltipMarkersGroup) {\n tooltipMarkersGroup.show();\n }\n if (xCrosshair) {\n xCrosshair.show();\n }\n if (yCrosshair) {\n yCrosshair.show();\n }\n } else {\n if (tooltip) {\n tooltip.hide();\n }\n if (tooltipMarkersGroup) {\n tooltipMarkersGroup.hide();\n }\n if (xCrosshair) {\n xCrosshair.hide();\n }\n if (yCrosshair) {\n yCrosshair.hide();\n }\n }\n this.visible = visible;\n }\n\n public getTooltipItems(point: Point) {\n let items = this.findItemsFromView(this.view, point);\n if (items.length) {\n // 三层\n items = flatten(items);\n for (const itemArr of items) {\n for (const item of itemArr) {\n const { x, y } = item.mappingData;\n item.x = isArray(x) ? x[x.length - 1] : x;\n item.y = isArray(y) ? y[y.length - 1] : y;\n }\n }\n\n const { shared } = this.getTooltipCfg();\n // shared: false 代表只显示当前拾取到的 shape 的数据，但是一个 view 会有多个 Geometry，所以有可能会拾取到多个 shape\n if (shared === false && items.length > 1) {\n let snapItem = items[0];\n let min = Math.abs(point.y - snapItem[0].y);\n for (const aItem of items) {\n const yDistance = Math.abs(point.y - aItem[0].y);\n if (yDistance <= min) {\n snapItem = aItem;\n min = yDistance;\n }\n }\n items = [snapItem];\n }\n\n return uniq(flatten(items));\n }\n\n return [];\n }\n\n public layout() { }\n public update() {\n if (this.point) {\n this.showTooltip(this.point);\n }\n }\n\n // 获取 tooltip 配置，因为用户可能会通过 view.tooltip() 重新配置 tooltip，所以就不做缓存，每次直接读取\n private getTooltipCfg() {\n const view = this.view;\n const option = view.getOptions().tooltip;\n const theme = view.getTheme();\n const defaultCfg = get(theme, ['components', 'tooltip'], {});\n const enterable = isUndefined(get(option, 'enterable')) ? defaultCfg.enterable : get(option, 'enterable');\n return deepMix({}, defaultCfg, option, {\n capture: enterable || this.isLocked ? true : false,\n });\n }\n\n private getTitle(items) {\n const title = items[0].title || items[0].name;\n this.title = title;\n\n return title;\n }\n\n private renderTooltip() {\n const canvas = this.view.getCanvas();\n const region = {\n start: { x: 0, y: 0 },\n end: { x: canvas.get('width'), y: canvas.get('height') },\n };\n\n const cfg = this.getTooltipCfg();\n const tooltip = new HtmlTooltip({\n parent: canvas.get('el').parentNode,\n region,\n ...cfg,\n visible: false,\n crosshairs: null,\n });\n\n tooltip.init();\n this.tooltip = tooltip;\n }\n\n private renderTooltipMarkers(items, marker) {\n const tooltipMarkersGroup = this.getTooltipMarkersGroup();\n for (const item of items) {\n const { x, y } = item;\n const attrs = {\n fill: item.color,\n symbol: 'circle',\n shadowColor: item.color,\n ...marker,\n x,\n y,\n };\n\n tooltipMarkersGroup.addShape('marker', {\n attrs,\n });\n }\n }\n\n private renderCrosshairs(point: Point, cfg) {\n const crosshairsType = get(cfg, ['crosshairs', 'type'], 'x'); // 默认展示 x 轴上的辅助线\n if (crosshairsType === 'x') {\n if (this.yCrosshair) {\n this.yCrosshair.hide();\n }\n this.renderXCrosshairs(point, cfg);\n } else if (crosshairsType === 'y') {\n if (this.xCrosshair) {\n this.xCrosshair.hide();\n }\n this.renderYCrosshairs(point, cfg);\n } else if (crosshairsType === 'xy') {\n this.renderXCrosshairs(point, cfg);\n this.renderYCrosshairs(point, cfg);\n }\n }\n\n // 渲染 x 轴上的 tooltip 辅助线\n private renderXCrosshairs(point: Point, tooltipCfg) {\n const coordinate = this.getViewWithGeometry(this.view).getCoordinate();\n if (!isPointInCoordinate(coordinate, point)) {\n return;\n }\n let start;\n let end;\n if (coordinate.isRect) {\n if (coordinate.isTransposed) {\n start = {\n x: coordinate.start.x,\n y: point.y,\n };\n end = {\n x: coordinate.end.x,\n y: point.y,\n };\n } else {\n start = {\n x: point.x,\n y: coordinate.end.y,\n };\n end = {\n x: point.x,\n y: coordinate.start.y,\n };\n }\n } else {\n // 极坐标下 x 轴上的 crosshairs 表现为半径\n const angle = getAngleByPoint(coordinate, point);\n const center = coordinate.getCenter();\n const radius = coordinate.getRadius();\n end = polarToCartesian(center.x, center.y, radius, angle);\n start = center;\n }\n\n const cfg = deepMix({\n start,\n end,\n container: this.getTooltipCrosshairsGroup(),\n }, get(tooltipCfg, 'crosshairs', {}), this.getCrosshairsText('x', point, tooltipCfg));\n delete cfg.type; // 与 Crosshairs 组件的 type 冲突故删除\n\n let xCrosshair = this.xCrosshair;\n if (xCrosshair) {\n xCrosshair.update(cfg);\n } else {\n xCrosshair = new Crosshair.Line(cfg);\n xCrosshair.init();\n }\n xCrosshair.render();\n xCrosshair.show();\n this.xCrosshair = xCrosshair;\n }\n\n // 渲染 y 轴上的辅助线\n private renderYCrosshairs(point: Point, tooltipCfg) {\n const coordinate = this.getViewWithGeometry(this.view).getCoordinate();\n if (!isPointInCoordinate(coordinate, point)) {\n return;\n }\n let cfg;\n let type;\n if (coordinate.isRect) {\n let start;\n let end;\n if (coordinate.isTransposed) {\n start = {\n x: point.x,\n y: coordinate.end.y,\n };\n end = {\n x: point.x,\n y: coordinate.start.y,\n };\n } else {\n start = {\n x: coordinate.start.x,\n y: point.y,\n };\n end = {\n x: coordinate.end.x,\n y: point.y,\n };\n }\n cfg = {\n start,\n end,\n };\n type = 'Line';\n } else {\n // 极坐标下 y 轴上的 crosshairs 表现为圆弧\n cfg = {\n center: coordinate.getCenter(),\n // @ts-ignore\n radius: getDistanceToCenter(coordinate, point),\n startAngle: coordinate.startAngle,\n endAngle: coordinate.endAngle,\n };\n type = 'Circle';\n }\n\n cfg = deepMix({\n container: this.getTooltipCrosshairsGroup()\n }, cfg, get(tooltipCfg, 'crosshairs', {}), this.getCrosshairsText('y', point, tooltipCfg));\n delete cfg.type; // 与 Crosshairs 组件的 type 冲突故删除\n\n let yCrosshair = this.yCrosshair;\n if (yCrosshair) {\n // 如果坐标系发生直角坐标系与极坐标的切换操作\n if ((coordinate.isRect && yCrosshair.get('type') === 'circle')\n || (!coordinate.isRect && yCrosshair.get('type') === 'line')) {\n yCrosshair = new Crosshair[type](cfg);\n yCrosshair.init();\n } else {\n yCrosshair.update(cfg);\n }\n } else {\n yCrosshair = new Crosshair[type](cfg);\n yCrosshair.init();\n }\n yCrosshair.render();\n yCrosshair.show();\n this.yCrosshair = yCrosshair;\n }\n\n private getCrosshairsText(type, point: Point, tooltipCfg) {\n let textCfg = get(tooltipCfg, ['crosshairs', 'text']);\n const follow = get(tooltipCfg, ['crosshairs', 'follow']);\n const items = this.items;\n\n if (textCfg) {\n const view = this.getViewWithGeometry(this.view);\n // 需要展示文本\n const firstItem = items[0];\n const xScale = view.getXScale();\n const yScale = view.getYScales()[0];\n let xValue;\n let yValue;\n if (follow) {\n // 如果需要跟随鼠标移动，就需要将当前鼠标坐标点转换为对应的数值\n const invertPoint = this.view.getCoordinate().invert(point);\n xValue = xScale.invert(invertPoint.x); // 转换为原始值\n yValue = yScale.invert(invertPoint.y); // 转换为原始值\n } else {\n xValue = firstItem.data[xScale.field];\n yValue = firstItem.data[yScale.field];\n }\n\n const content = type === 'x' ? xValue : yValue;\n if (isFunction(textCfg)) {\n textCfg = textCfg(type, content, items, point);\n } else {\n textCfg.content = content;\n }\n\n return {\n text: textCfg,\n };\n }\n }\n\n // 获取存储 tooltipMarkers 和 crosshairs 的容器\n private getGuideGroup() {\n if (!this.guideGroup) {\n const foregroundGroup = this.view.foregroundGroup;\n this.guideGroup = foregroundGroup.addGroup({\n name: 'tooltipGuide',\n capture: false,\n });\n }\n\n return this.guideGroup;\n }\n\n // 获取 tooltipMarkers 存储的容器\n private getTooltipMarkersGroup() {\n let tooltipMarkersGroup = this.tooltipMarkersGroup;\n if (tooltipMarkersGroup && !tooltipMarkersGroup.destroyed) {\n tooltipMarkersGroup.clear();\n tooltipMarkersGroup.show();\n } else {\n tooltipMarkersGroup = this.getGuideGroup().addGroup({\n name: 'tooltipMarkersGroup',\n });\n tooltipMarkersGroup.toFront();\n this.tooltipMarkersGroup = tooltipMarkersGroup;\n }\n return tooltipMarkersGroup;\n }\n\n // 获取 tooltip crosshairs 存储的容器\n private getTooltipCrosshairsGroup() {\n let tooltipCrosshairsGroup = this.tooltipCrosshairsGroup;\n if (!tooltipCrosshairsGroup) {\n tooltipCrosshairsGroup = this.getGuideGroup().addGroup({\n name: 'tooltipCrosshairsGroup',\n capture: false,\n });\n tooltipCrosshairsGroup.toBack();\n this.tooltipCrosshairsGroup = tooltipCrosshairsGroup;\n }\n return tooltipCrosshairsGroup;\n }\n\n private getTooltipItemsByHitShape(geometry, point, title) {\n const result = [];\n const container = geometry.container;\n const shape = container.getShape(point.x, point.y);\n if (shape && shape.get('visible') && shape.get('origin')) {\n const mappingData = shape.get('origin').mappingData;\n const items = getTooltipItems(mappingData, geometry, title);\n if (items.length) {\n result.push(items);\n }\n }\n\n return result;\n }\n\n private getTooltipItemsByFindData(geometry: Geometry, point, title) {\n const result = [];\n const dataArray = geometry.dataArray;\n geometry.sort(dataArray); // 先进行排序，便于 tooltip 查找\n for (const data of dataArray) {\n const record = findDataByPoint(point, data, geometry);\n if (record) {\n const elementId = geometry.getElementId(record);\n const element = geometry.elementsMap[elementId];\n if (geometry.type === 'heatmap' || element.visible) {\n // Heatmap 没有 Element\n // 如果图形元素隐藏了，怎不再 tooltip 上展示相关数据\n const items = getTooltipItems(record, geometry, title);\n if (items.length) {\n result.push(items);\n }\n }\n }\n }\n\n return result;\n }\n\n private findItemsFromView(view, point) {\n if (view.getOptions().tooltip === false) {\n // 如果 view 关闭了 tooltip\n return [];\n }\n\n let result = [];\n // 先从 view 本身查找\n const geometries = view.geometries;\n const { shared, title } = this.getTooltipCfg();\n for (const geometry of geometries) {\n if (geometry.visible && geometry.tooltipOption !== false) {\n // geometry 可见同时未关闭 tooltip\n const geometryType = geometry.type;\n let tooltipItems;\n if (['point', 'edge', 'polygon'].includes(geometryType)) {\n // 始终通过图形拾取\n tooltipItems = this.getTooltipItemsByHitShape(geometry, point, title);\n } else if (['area', 'line', 'path', 'heatmap'].includes(geometryType)) {\n // 如果是 'area', 'line', 'path'，始终通过数据查找方法查找 tooltip\n tooltipItems = this.getTooltipItemsByFindData(geometry, point, title);\n } else {\n if (shared !== false) {\n tooltipItems = this.getTooltipItemsByFindData(geometry, point, title);\n } else {\n tooltipItems = this.getTooltipItemsByHitShape(geometry, point, title);\n }\n }\n if (tooltipItems.length) {\n // geometry 有可能会有多个 item，因为用户可以设置 geometry.tooltip('x*y*z')\n result.push(tooltipItems);\n }\n }\n }\n\n // 递归查找，并合并结果\n for (const childView of view.views) {\n result = result.concat(this.findItemsFromView(childView, point));\n }\n\n return result;\n }\n\n // FIXME: hack 方法\n // 因为 tooltip 的交互是挂载在 Chart 上，所以当chart 上没有绘制 Geometry 的时候，就查找不到数据，并且绘图区域同子 View 的区域不同\n private getViewWithGeometry(view) {\n if (view.geometries.length) {\n return view;\n }\n\n return find(view.views, (childView) => this.getViewWithGeometry(childView));\n }\n}\n"]}