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* Create By Bruce Too\n * On 2020-02-10\n */\nimport { assign, deepMix, each } from '@antv/util';\nimport View from '../chart/view';\nimport { DIRECTION, VIEW_LIFE_CIRCLE } from '../constant';\nimport { AxisCfg, Condition, Datum, TreeCfg, TreeData } from '../interface';\nimport { getFactTitleConfig } from '../util/facet';\nimport { Facet } from './facet';\n\n/**\n * @ignore\n * Tree Facet\n */\nexport default class Tree extends Facet<TreeCfg, TreeData> {\n\n protected afterEachView(view: View, facet: TreeData) {\n this.processAxis(view, facet);\n }\n\n protected beforeEachView(view: View, facet: TreeData) {\n }\n\n public init() {\n super.init();\n this.view.on(VIEW_LIFE_CIRCLE.AFTER_RENDER, this.afterChartRender);\n }\n\n protected getDefaultCfg() {\n return deepMix({}, super.getDefaultCfg(), {\n type: 'tree',\n line: {\n style: {\n lineWidth: 1,\n stroke: '#ddd'\n },\n smooth: false,\n },\n showTitle: true,\n title: super.getDefaultTitleCfg(),\n });\n }\n\n protected generateFacets(data: Datum[]): TreeData[] {\n const fields = this.cfg.fields;\n if (!fields.length) {\n throw new Error('Please specify for the fields for rootFacet!');\n }\n const rst = [];\n const rootFacet: TreeData = {\n type: this.cfg.type,\n data,\n region: null,\n rowValuesLength: this.getRows(),\n columnValuesLength: 1,\n rowIndex: 0,\n columnIndex: 0,\n rowField: '',\n columnField: '',\n rowValue: '',\n columnValue: '',\n };\n rst.push(rootFacet);\n rootFacet.children = this.getChildFacets(data, 1, rst);\n this.setRegion(rst);\n return rst;\n }\n\n private setRegion(facets: TreeData[]) {\n this.forceColIndex(facets);\n facets.forEach(facet => {\n // @ts-ignore 允许调整\n facet.region = this.getRegion(facet.rowValuesLength, facet.columnValuesLength,\n facet.columnIndex, facet.rowIndex);\n });\n }\n\n protected getRegion(rows: number, cols: number, xIndex: number, yIndex: number) {\n const xWidth = 1 / cols; // x轴方向的每个分面的偏移\n const yWidth = 1 / rows; // y轴方向的每个分面的偏移\n\n const start = {\n x: xWidth * xIndex,\n y: yWidth * yIndex\n };\n\n const end = {\n x: start.x + xWidth,\n y: start.y + yWidth * 2 / 3 // 预留1/3的空隙，方便添加连接线\n };\n return {\n start,\n end\n };\n }\n\n private forceColIndex(facets: TreeData[]) {\n const leafs: TreeData[] = [];\n let index = 0;\n facets.forEach(facet => {\n if (this.isLeaf(facet)) {\n leafs.push(facet);\n // @ts-ignore 允许调整\n facet.columnIndex = index;\n index++;\n }\n });\n\n leafs.forEach(facet => {\n // @ts-ignore\n facet.columnValuesLength = leafs.length;\n });\n const maxLevel = this.cfg.fields.length;\n for (let i = maxLevel - 1; i >= 0; i--) {\n const levelFacets = this.getFacetsByLevel(facets, i);\n // var yIndex = maxLevel - i;\n for (const facet of levelFacets) {\n if (!this.isLeaf(facet)) {\n facet.originColIndex = facet.columnIndex;\n // @ts-ignore\n facet.columnIndex = this.getRegionIndex(facet.children);\n // @ts-ignore\n facet.columnValuesLength = leafs.length;\n }\n }\n }\n }\n\n // get facet use level\n private getFacetsByLevel(facets: TreeData[], level: number) {\n const rst: TreeData[] = [];\n facets.forEach(facet => {\n if (facet.rowIndex === level) {\n rst.push(facet);\n }\n });\n return rst;\n }\n\n // if the facet has children , make it's column index in the middle of it's children\n private getRegionIndex(children: TreeData[]) {\n const first = children[0];\n const last = children[children.length - 1];\n return (last.columnIndex - first.columnIndex) / 2 + first.columnIndex;\n }\n\n // is a leaf without children\n private isLeaf(facet: TreeData) {\n return !facet.children || !facet.children.length;\n }\n\n private getRows() {\n return this.cfg.fields.length + 1;\n }\n\n // get child\n private getChildFacets(data: Datum[], level: number, arr: TreeData[]) {\n // [ 'grade', 'class' ]\n const fields = this.cfg.fields;\n const length = fields.length;\n if (length < level) {\n return;\n }\n const rst = [];\n // get fist level except root node\n const field = fields[level - 1];\n // get field value\n const values = this.getFieldValues(data, field);\n values.forEach((value, index) => {\n const conditions = [\n {field, value, values} as Condition\n ];\n const subData = data.filter(this.getFacetDataFilter(conditions));\n if (subData.length) {\n const facet: TreeData = {\n type: this.cfg.type,\n data: subData,\n region: null,\n columnValue: value,\n rowValue: '',\n columnField: field,\n rowField: '',\n columnIndex: index,\n rowValuesLength: this.getRows(),\n columnValuesLength: 1,\n rowIndex: level,\n children: this.getChildFacets(subData, level + 1, arr)\n };\n rst.push(facet);\n arr.push(facet);\n }\n });\n return rst;\n }\n\n public render() {\n super.render();\n if (this.cfg.showTitle) {\n this.renderTitle();\n }\n }\n\n private afterChartRender = () => {\n if (this.facets && this.cfg.line) {\n this.container.clear();\n this.drawLines(this.facets);\n }\n };\n\n private renderTitle() {\n each(this.facets, (facet: TreeData) => {\n const { columnValue, view } = facet;\n\n const config = deepMix({\n position: [ '50%', '0%' ] as [string, string],\n content: columnValue,\n }, getFactTitleConfig(DIRECTION.TOP), this.cfg.title);\n\n view.annotation().text(config);\n });\n }\n\n private drawLines(facets: TreeData[]) {\n facets.forEach(facet => {\n if (!this.isLeaf(facet)) {\n const children = facet.children;\n this.addFacetLines(facet, children);\n }\n });\n }\n\n // add lines with it's children\n private addFacetLines(facet: TreeData, children: TreeData[]) {\n const view = facet.view;\n const region = view.coordinateBBox;\n // top, right, bottom, left\n const start = {\n x: region.x + region.width / 2,\n y: region.y + region.height\n };\n\n children.forEach(subFacet => {\n const subRegion = subFacet.view.coordinateBBox;\n const end = {\n x: subRegion.bl.x + (subRegion.tr.x - subRegion.bl.x) / 2,\n y: subRegion.tr.y\n };\n\n const middle1 = {\n x: start.x,\n y: start.y + (end.y - start.y) / 2\n };\n const middle2 = {\n x: end.x,\n y: middle1.y\n };\n this.drawLine([start, middle1, middle2, end]);\n });\n }\n\n private getPath(points) {\n const path = [];\n const smooth = this.cfg.line.smooth;\n if (smooth) {\n path.push(['M', points[0].x, points[0].y]);\n path.push(['C', points[1].x, points[1].y, points[2].x, points[2].y, points[3].x, points[3].y]);\n } else {\n points.forEach((point, index) => {\n if (index === 0) {\n path.push(['M', point.x, point.y]);\n } else {\n path.push(['L', point.x, point.y]);\n }\n });\n }\n\n return path;\n }\n\n // draw line width points\n private drawLine(points) {\n const path = this.getPath(points);\n const line = this.cfg.line.style;\n this.container.addShape('path', {\n attrs: assign({\n // @ts-ignore\n path\n }, line),\n });\n }\n\n protected getXAxisOption(x: string, axes: any, option: AxisCfg, facet: TreeData): object {\n if (facet.rowIndex !== facet.rowValuesLength - 1) {\n return {\n ...option,\n title: null,\n label: null,\n };\n }\n return option;\n }\n\n protected getYAxisOption(y: string, axes: any, option: AxisCfg, facet: TreeData): object {\n if (facet.originColIndex !== 0 && facet.columnIndex !== 0) {\n return {\n ...option,\n title: null,\n label: null,\n };\n }\n return option;\n }\n\n}\n"]} |