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https://github.com/wanglin2/mind-map.git
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589 lines
17 KiB
JavaScript
589 lines
17 KiB
JavaScript
import { walk, bfsWalk, throttle } from '../utils'
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import { v4 as uuid } from 'uuid'
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import {
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getAssociativeLineTargetIndex,
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computeCubicBezierPathPoints,
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cubicBezierPath,
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getNodePoint,
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computeNodePoints,
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getNodeLinePath
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} from './associativeLine/associativeLineUtils'
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import associativeLineControlsMethods from './associativeLine/associativeLineControls'
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import associativeLineTextMethods from './associativeLine/associativeLineText'
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// 关联线插件
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class AssociativeLine {
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constructor(opt = {}) {
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this.mindMap = opt.mindMap
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this.associativeLineDraw = this.mindMap.associativeLineDraw
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// 当前所有连接线
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this.lineList = []
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// 当前激活的连接线
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this.activeLine = null
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// 当前正在创建连接线
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this.isCreatingLine = false // 是否正在创建连接线中
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this.creatingStartNode = null // 起始节点
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this.creatingLine = null // 创建过程中的连接线
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this.overlapNode = null // 创建过程中的目标节点
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// 是否有节点正在被拖拽
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this.isNodeDragging = false
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// 箭头图标
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this.markerPath = null
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this.marker = this.createMarker()
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// 控制点
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this.controlLine1 = null
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this.controlLine2 = null
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this.controlPoint1 = null
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this.controlPoint2 = null
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this.controlPointDiameter = 10
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this.isControlPointMousedown = false
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this.mousedownControlPointKey = ''
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this.controlPointMousemoveState = {
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pos: null,
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startPoint: null,
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endPoint: null,
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targetIndex: ''
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}
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// 节流一下，不然很卡
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this.checkOverlapNode = throttle(this.checkOverlapNode, 100, this)
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// 控制点相关方法
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Object.keys(associativeLineControlsMethods).forEach(item => {
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this[item] = associativeLineControlsMethods[item].bind(this)
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})
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// 关联线文字相关方法
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Object.keys(associativeLineTextMethods).forEach(item => {
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this[item] = associativeLineTextMethods[item].bind(this)
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})
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this.bindEvent()
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}
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// 监听事件
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bindEvent() {
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this.renderAllLines = this.renderAllLines.bind(this)
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this.onDrawClick = this.onDrawClick.bind(this)
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this.onNodeClick = this.onNodeClick.bind(this)
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this.removeLine = this.removeLine.bind(this)
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this.addLine = this.addLine.bind(this)
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this.onMousemove = this.onMousemove.bind(this)
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this.onNodeDragging = this.onNodeDragging.bind(this)
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this.onNodeDragend = this.onNodeDragend.bind(this)
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this.onControlPointMouseup = this.onControlPointMouseup.bind(this)
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// 节点树渲染完毕后渲染连接线
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this.mindMap.on('node_tree_render_end', this.renderAllLines)
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// 状态改变后重新渲染连接线
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this.mindMap.on('data_change', this.renderAllLines)
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// 监听画布和节点点击事件，用于清除当前激活的连接线
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this.mindMap.on('draw_click', this.onDrawClick)
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this.mindMap.on('node_click', this.onNodeClick)
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// 注册删除快捷键
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this.mindMap.keyCommand.addShortcut('Del|Backspace', this.removeLine)
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// 注册添加连接线的命令
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this.mindMap.command.add('ADD_ASSOCIATIVE_LINE', this.addLine)
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// 监听鼠标移动事件
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this.mindMap.on('mousemove', this.onMousemove)
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// 节点拖拽事件
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this.mindMap.on('node_dragging', this.onNodeDragging)
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this.mindMap.on('node_dragend', this.onNodeDragend)
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// 拖拽控制点
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this.mindMap.on('mouseup', this.onControlPointMouseup)
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// 缩放事件
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this.mindMap.on('scale', this.onScale)
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}
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// 解绑事件
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unBindEvent() {
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this.mindMap.off('node_tree_render_end', this.renderAllLines)
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this.mindMap.off('data_change', this.renderAllLines)
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this.mindMap.off('draw_click', this.onDrawClick)
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this.mindMap.off('node_click', this.onNodeClick)
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this.mindMap.keyCommand.removeShortcut('Del|Backspace', this.removeLine)
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this.mindMap.command.remove('ADD_ASSOCIATIVE_LINE', this.addLine)
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this.mindMap.off('mousemove', this.onMousemove)
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this.mindMap.off('node_dragging', this.onNodeDragging)
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this.mindMap.off('node_dragend', this.onNodeDragend)
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this.mindMap.off('mouseup', this.onControlPointMouseup)
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this.mindMap.off('scale', this.onScale)
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}
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// 画布点击事件
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onDrawClick() {
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if (this.isControlPointMousedown) {
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return
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}
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this.clearActiveLine()
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}
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// 节点点击事件
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onNodeClick(node) {
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if (this.isCreatingLine) {
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this.completeCreateLine(node)
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} else {
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this.clearActiveLine()
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}
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}
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// 创建箭头
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createMarker() {
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return this.associativeLineDraw.marker(20, 20, add => {
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add.ref(12, 5)
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add.size(10, 10)
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add.attr('orient', 'auto-start-reverse')
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this.markerPath = add.path('M0,0 L2,5 L0,10 L10,5 Z')
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})
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}
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// 判断关联线坐标是否变更，有变更则使用变化后的坐标，无则默认坐标
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updateAllLinesPos(node, toNode, associativeLinePoint) {
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associativeLinePoint = associativeLinePoint || {}
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let [startPoint, endPoint] = computeNodePoints(node, toNode)
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let nodeRange = 0
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let nodeDir = ''
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let toNodeRange = 0
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let toNodeDir = ''
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if (associativeLinePoint.startPoint) {
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nodeRange = associativeLinePoint.startPoint.range || 0
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nodeDir = associativeLinePoint.startPoint.dir || 'right'
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startPoint = getNodePoint(node, nodeDir, nodeRange)
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}
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if (associativeLinePoint.endPoint) {
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toNodeRange = associativeLinePoint.endPoint.range || 0
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toNodeDir = associativeLinePoint.endPoint.dir || 'right'
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endPoint = getNodePoint(toNode, toNodeDir, toNodeRange)
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}
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return [startPoint, endPoint]
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}
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// 渲染所有连线
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renderAllLines() {
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// 先移除
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this.removeAllLines()
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this.removeControls()
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this.clearActiveLine()
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let tree = this.mindMap.renderer.root
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if (!tree) return
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let idToNode = new Map()
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let nodeToIds = new Map()
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walk(
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tree,
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null,
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cur => {
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if (!cur) return
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let data = cur.getData()
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if (
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data.associativeLineTargets &&
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data.associativeLineTargets.length > 0
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) {
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nodeToIds.set(cur, data.associativeLineTargets)
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}
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if (data.uid) {
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idToNode.set(data.uid, cur)
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}
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},
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() => {},
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true,
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0
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)
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nodeToIds.forEach((ids, node) => {
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ids.forEach((uid, index) => {
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let toNode = idToNode.get(uid)
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if (!node || !toNode) return
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const associativeLinePoint = (node.getData('associativeLinePoint') ||
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[])[index]
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// 切换结构和布局，都会更新坐标
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const [startPoint, endPoint] = this.updateAllLinesPos(
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node,
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toNode,
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associativeLinePoint
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)
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this.drawLine(startPoint, endPoint, node, toNode)
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})
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})
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}
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// 绘制连接线
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drawLine(startPoint, endPoint, node, toNode) {
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let {
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associativeLineWidth,
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associativeLineColor,
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associativeLineActiveWidth,
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associativeLineActiveColor
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} = this.mindMap.themeConfig
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// 箭头
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this.markerPath
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.stroke({ color: associativeLineColor })
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.fill({ color: associativeLineColor })
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// 路径
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let { path: pathStr, controlPoints } = getNodeLinePath(
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startPoint,
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endPoint,
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node,
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toNode
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)
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// 虚线
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let path = this.associativeLineDraw.path()
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path
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.stroke({
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width: associativeLineWidth,
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color: associativeLineColor,
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dasharray: [6, 4]
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})
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.fill({ color: 'none' })
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path.plot(pathStr)
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path.marker('end', this.marker)
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// 不可见的点击线
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let clickPath = this.associativeLineDraw.path()
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clickPath
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.stroke({ width: associativeLineActiveWidth, color: 'transparent' })
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.fill({ color: 'none' })
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clickPath.plot(pathStr)
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// 文字
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let text = this.createText({
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path,
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clickPath,
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node,
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toNode,
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startPoint,
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endPoint,
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controlPoints
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})
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// 点击事件
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clickPath.click(e => {
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e.stopPropagation()
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this.setActiveLine({
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path,
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clickPath,
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text,
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node,
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toNode,
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startPoint,
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endPoint,
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controlPoints
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})
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})
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// 双击进入关联线文本编辑状态
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clickPath.dblclick(() => {
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if (!this.activeLine) return
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this.showEditTextBox(text)
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})
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// 渲染关联线文字
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this.renderText(this.getText(node, toNode), path, text)
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this.lineList.push([path, clickPath, text, node, toNode])
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}
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// 激活某根关联线
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setActiveLine({
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path,
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clickPath,
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text,
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node,
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toNode,
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startPoint,
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endPoint,
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controlPoints
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}) {
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let { associativeLineActiveColor } = this.mindMap.themeConfig
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// 如果当前存在激活节点，那么取消激活节点
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this.mindMap.execCommand('CLEAR_ACTIVE_NODE')
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// 否则清除当前的关联线的激活状态，如果有的话
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this.clearActiveLine()
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// 保存当前激活的关联线信息
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this.activeLine = [path, clickPath, text, node, toNode]
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// 让不可见的点击线显示
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clickPath.stroke({ color: associativeLineActiveColor })
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// 如果没有输入过关联线文字，那么显示默认文字
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if (!this.getText(node, toNode)) {
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this.renderText(this.mindMap.opt.defaultAssociativeLineText, path, text)
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}
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// 渲染控制点和连线
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this.renderControls(
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startPoint,
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endPoint,
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controlPoints[0],
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controlPoints[1]
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)
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this.mindMap.emit('associative_line_click', path, clickPath, node, toNode)
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this.front()
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}
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// 移除所有连接线
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removeAllLines() {
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this.lineList.forEach(line => {
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line[0].remove()
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line[1].remove()
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line[2].remove()
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})
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this.lineList = []
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}
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// 从当前激活节点开始创建连接线
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createLineFromActiveNode() {
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if (this.mindMap.renderer.activeNodeList.length <= 0) return
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let node = this.mindMap.renderer.activeNodeList[0]
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this.createLine(node)
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}
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// 创建连接线
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createLine(fromNode) {
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let { associativeLineWidth, associativeLineColor } =
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this.mindMap.themeConfig
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if (this.isCreatingLine || !fromNode) return
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this.front()
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this.isCreatingLine = true
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this.creatingStartNode = fromNode
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this.creatingLine = this.associativeLineDraw.path()
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this.creatingLine
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.stroke({
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width: associativeLineWidth,
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color: associativeLineColor,
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dasharray: [6, 4]
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})
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.fill({ color: 'none' })
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this.creatingLine.marker('end', this.marker)
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}
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// 鼠标移动事件
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onMousemove(e) {
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this.onControlPointMousemove(e)
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this.updateCreatingLine(e)
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}
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// 更新创建过程中的连接线
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updateCreatingLine(e) {
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if (!this.isCreatingLine) return
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let { x, y } = this.getTransformedEventPos(e)
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let startPoint = getNodePoint(this.creatingStartNode)
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let offsetX = x > startPoint.x ? -10 : 10
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let pathStr = cubicBezierPath(startPoint.x, startPoint.y, x + offsetX, y)
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this.creatingLine.plot(pathStr)
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this.checkOverlapNode(x, y)
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}
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// 获取转换后的鼠标事件对象的坐标
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getTransformedEventPos(e) {
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let { x, y } = this.mindMap.toPos(e.clientX, e.clientY)
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let { scaleX, scaleY, translateX, translateY } =
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this.mindMap.draw.transform()
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return {
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x: (x - translateX) / scaleX,
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y: (y - translateY) / scaleY
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}
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}
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// 计算节点偏移位置
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getNodePos(node) {
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const { scaleX, scaleY, translateX, translateY } =
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this.mindMap.draw.transform()
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const { left, top, width, height } = node
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let translateLeft = left * scaleX + translateX
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let translateTop = top * scaleY + translateY
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return {
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left,
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top,
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translateLeft,
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translateTop,
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width,
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height
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}
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}
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// 检测当前移动到的目标节点
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checkOverlapNode(x, y) {
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this.overlapNode = null
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bfsWalk(this.mindMap.renderer.root, node => {
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if (node.getData('isActive')) {
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this.mindMap.execCommand('SET_NODE_ACTIVE', node, false)
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}
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if (node.uid === this.creatingStartNode.uid || this.overlapNode) {
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return
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}
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let { left, top, width, height } = node
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let right = left + width
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let bottom = top + height
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if (x >= left && x <= right && y >= top && y <= bottom) {
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this.overlapNode = node
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}
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})
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if (this.overlapNode && !this.overlapNode.getData('isActive')) {
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this.mindMap.execCommand('SET_NODE_ACTIVE', this.overlapNode, true)
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}
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}
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// 完成创建连接线
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completeCreateLine(node) {
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if (this.creatingStartNode.uid === node.uid) return
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this.addLine(this.creatingStartNode, node)
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if (this.overlapNode && this.overlapNode.getData('isActive')) {
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this.mindMap.execCommand('SET_NODE_ACTIVE', this.overlapNode, false)
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}
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this.isCreatingLine = false
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this.creatingStartNode = null
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this.creatingLine.remove()
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this.creatingLine = null
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this.overlapNode = null
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this.back()
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}
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// 添加连接线
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addLine(fromNode, toNode) {
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if (!fromNode || !toNode) return
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// 目标节点如果没有id，则生成一个id
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let uid = toNode.getData('uid')
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if (!uid) {
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uid = uuid()
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this.mindMap.execCommand('SET_NODE_DATA', toNode, {
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uid
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})
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}
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// 将目标节点id保存起来
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let list = fromNode.getData('associativeLineTargets') || []
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// 连线节点是否存在相同的id,存在则阻止添加关联线
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const sameLine = list.some(item => item === uid)
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if (sameLine) {
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return
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}
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list.push(uid)
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// 保存控制点
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let [startPoint, endPoint] = computeNodePoints(fromNode, toNode)
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let controlPoints = computeCubicBezierPathPoints(
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startPoint.x,
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startPoint.y,
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endPoint.x,
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endPoint.y
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)
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let offsetList =
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fromNode.getData('associativeLineTargetControlOffsets') || []
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// 保存的实际是控制点和端点的差值，否则当节点位置改变了，控制点还是原来的位置，连线就不对了
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offsetList[list.length - 1] = [
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{
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x: controlPoints[0].x - startPoint.x,
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y: controlPoints[0].y - startPoint.y
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},
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{
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x: controlPoints[1].x - endPoint.x,
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y: controlPoints[1].y - endPoint.y
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}
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]
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let associativeLinePoint = fromNode.getData('associativeLinePoint') || []
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// 记录关联的起始|结束坐标
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associativeLinePoint[list.length - 1] = { startPoint, endPoint }
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this.mindMap.execCommand('SET_NODE_DATA', fromNode, {
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associativeLineTargets: list,
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associativeLineTargetControlOffsets: offsetList,
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associativeLinePoint
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})
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}
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// 删除连接线
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removeLine() {
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if (!this.activeLine) return
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let [, , , node, toNode] = this.activeLine
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this.removeControls()
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let {
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associativeLineTargets,
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associativeLinePoint,
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associativeLineTargetControlOffsets,
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associativeLineText
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} = node.getData()
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associativeLinePoint = associativeLinePoint || []
|
||
let targetIndex = getAssociativeLineTargetIndex(node, toNode)
|
||
// 更新关联线文本数据
|
||
let newAssociativeLineText = {}
|
||
if (associativeLineText) {
|
||
Object.keys(associativeLineText).forEach(item => {
|
||
if (item !== toNode.getData('uid')) {
|
||
newAssociativeLineText[item] = associativeLineText[item]
|
||
}
|
||
})
|
||
}
|
||
this.mindMap.execCommand('SET_NODE_DATA', node, {
|
||
// 目标
|
||
associativeLineTargets: associativeLineTargets.filter((_, index) => {
|
||
return index !== targetIndex
|
||
}),
|
||
// 连接线坐标
|
||
associativeLinePoint: associativeLinePoint.filter((_, index) => {
|
||
return index !== targetIndex
|
||
}),
|
||
// 偏移量
|
||
associativeLineTargetControlOffsets: associativeLineTargetControlOffsets
|
||
? associativeLineTargetControlOffsets.filter((_, index) => {
|
||
return index !== targetIndex
|
||
})
|
||
: [],
|
||
// 文本
|
||
associativeLineText: newAssociativeLineText
|
||
})
|
||
}
|
||
|
||
// 清除激活的线
|
||
clearActiveLine() {
|
||
if (this.activeLine) {
|
||
let [, clickPath, text, node, toNode] = this.activeLine
|
||
clickPath.stroke({
|
||
color: 'transparent'
|
||
})
|
||
// 隐藏关联线文本编辑框
|
||
this.hideEditTextBox()
|
||
// 如果当前关联线没有文字，则清空文字节点
|
||
if (!this.getText(node, toNode)) {
|
||
text.clear()
|
||
}
|
||
this.activeLine = null
|
||
this.removeControls()
|
||
this.back()
|
||
}
|
||
}
|
||
|
||
// 处理节点正在拖拽事件
|
||
onNodeDragging() {
|
||
if (this.isNodeDragging) return
|
||
this.isNodeDragging = true
|
||
this.lineList.forEach(line => {
|
||
line[0].hide()
|
||
line[1].hide()
|
||
line[2].hide()
|
||
})
|
||
this.hideControls()
|
||
}
|
||
|
||
// 处理节点拖拽完成事件
|
||
onNodeDragend() {
|
||
if (!this.isNodeDragging) return
|
||
this.lineList.forEach(line => {
|
||
line[0].show()
|
||
line[1].show()
|
||
line[2].show()
|
||
})
|
||
this.showControls()
|
||
this.isNodeDragging = false
|
||
}
|
||
|
||
// 关联线顶层显示
|
||
front() {
|
||
if (this.mindMap.opt.associativeLineIsAlwaysAboveNode) return
|
||
this.associativeLineDraw.front()
|
||
}
|
||
|
||
// 关联线回到原有层级
|
||
back() {
|
||
if (this.mindMap.opt.associativeLineIsAlwaysAboveNode) return
|
||
this.associativeLineDraw.back() // 最底层
|
||
this.associativeLineDraw.forward() // 连线层上面
|
||
}
|
||
|
||
// 插件被移除前做的事情
|
||
beforePluginRemove() {
|
||
this.unBindEvent()
|
||
}
|
||
|
||
// 插件被卸载前做的事情
|
||
beforePluginDestroy() {
|
||
this.unBindEvent()
|
||
}
|
||
}
|
||
|
||
AssociativeLine.instanceName = 'associativeLine'
|
||
|
||
export default AssociativeLine
|