mirror of
https://github.com/wanglin2/mind-map.git
synced 2026-02-23 11:27:41 +08:00
386 lines
11 KiB
JavaScript
386 lines
11 KiB
JavaScript
import Base from './Base'
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import { walk, asyncRun } from '../utils'
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// 目录组织图
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class CatalogOrganization extends Base {
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// 构造函数
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constructor(opt = {}) {
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super(opt)
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}
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// 布局
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doLayout(callback) {
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let task = [
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() => {
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this.computedBaseValue()
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},
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() => {
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this.computedLeftTopValue()
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},
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() => {
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this.adjustLeftTopValue()
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},
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() => {
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callback(this.root)
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}
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]
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asyncRun(task)
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}
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// 遍历数据计算节点的left、width、height
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computedBaseValue() {
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walk(
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this.renderer.renderTree,
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null,
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(cur, parent, isRoot, layerIndex) => {
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let newNode = this.createNode(cur, parent, isRoot, layerIndex)
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// 根节点定位在画布中心位置
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if (isRoot) {
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this.setNodeCenter(newNode)
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} else {
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// 非根节点
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if (parent._node.isRoot) {
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newNode.top =
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parent._node.top +
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parent._node.height +
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this.getMarginX(layerIndex)
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}
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}
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if (!cur.data.expand) {
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return true
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}
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},
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(cur, parent, isRoot, layerIndex) => {
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if (isRoot) {
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let len = cur.data.expand === false ? 0 : cur._node.children.length
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cur._node.childrenAreaWidth = len
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? cur._node.children.reduce((h, item) => {
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return h + item.width
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}, 0) +
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(len + 1) * this.getMarginX(layerIndex + 1)
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: 0
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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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}
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// 遍历节点树计算节点的left、top
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computedLeftTopValue() {
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walk(
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this.root,
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null,
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(node, parent, isRoot, layerIndex) => {
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if (
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node.nodeData.data.expand &&
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node.children &&
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node.children.length
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) {
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let marginX = this.getMarginX(layerIndex + 1)
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let marginY = this.getMarginY(layerIndex + 1)
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if (isRoot) {
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let left = node.left + node.width / 2 - node.childrenAreaWidth / 2
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let totalLeft = left + marginX
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node.children.forEach(cur => {
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cur.left = totalLeft
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totalLeft += cur.width + marginX
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})
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} else {
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let totalTop = node.top + node.height + marginY + (this.getNodeActChildrenLength(node) > 0 ? node.expandBtnSize : 0)
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node.children.forEach(cur => {
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cur.left = node.left + node.width * 0.5
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cur.top = totalTop
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totalTop += cur.height + marginY + (this.getNodeActChildrenLength(cur) > 0 ? cur.expandBtnSize : 0)
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})
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}
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}
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},
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null,
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true
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)
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}
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// 调整节点left、top
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adjustLeftTopValue() {
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walk(
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this.root,
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null,
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(node, parent, isRoot, layerIndex) => {
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if (!node.nodeData.data.expand) {
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return
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}
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// 调整left
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if (parent && parent.isRoot) {
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let areaWidth = this.getNodeAreaWidth(node)
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let difference = areaWidth - node.width
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if (difference > 0) {
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this.updateBrothersLeft(node, difference / 2)
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}
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}
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// 调整top
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let len = node.children.length
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if (parent && !parent.isRoot && len > 0) {
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let marginY = this.getMarginY(layerIndex + 1)
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let totalHeight =
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node.children.reduce((h, item) => {
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return h + item.height + (this.getNodeActChildrenLength(item) > 0 ? item.expandBtnSize : 0)
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}, 0) +
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(len + 1) * marginY
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this.updateBrothersTop(node, totalHeight)
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}
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},
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null,
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true
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)
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}
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// 递归计算节点的宽度
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getNodeAreaWidth(node) {
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let widthArr = []
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let loop = (node, width) => {
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if (node.children.length) {
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width += node.width / 2
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node.children.forEach(item => {
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loop(item, width)
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})
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} else {
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width += node.width
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widthArr.push(width)
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}
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}
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loop(node, 0)
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return Math.max(...widthArr)
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}
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// 调整兄弟节点的left
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updateBrothersLeft(node, addWidth) {
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if (node.parent) {
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let childrenList = node.parent.children
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let index = childrenList.findIndex(item => {
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return item === node
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})
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// 存在大于一个节点时，第一个或最后一个节点自身也需要移动，否则两边不对称
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if (
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(index === 0 || index === childrenList.length - 1) &&
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childrenList.length > 1
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) {
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let _offset = index === 0 ? -addWidth : addWidth
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node.left += _offset
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if (
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node.children &&
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node.children.length &&
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!node.hasCustomPosition()
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) {
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this.updateChildren(node.children, 'left', _offset)
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}
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}
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childrenList.forEach((item, _index) => {
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if (item.hasCustomPosition()) {
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// 适配自定义位置
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return
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}
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let _offset = 0
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if (_index < index) {
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// 左边的节点往左移
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_offset = -addWidth
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} else if (_index > index) {
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// 右边的节点往右移
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_offset = addWidth
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}
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item.left += _offset
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// 同步更新子节点的位置
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if (item.children && item.children.length) {
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this.updateChildren(item.children, 'left', _offset)
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}
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})
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// 更新父节点的位置
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this.updateBrothersLeft(node.parent, addWidth)
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}
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}
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// 调整兄弟节点的top
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updateBrothersTop(node, addHeight) {
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if (node.parent && !node.parent.isRoot) {
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let childrenList = node.parent.children
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let index = childrenList.findIndex(item => {
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return item === node
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})
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childrenList.forEach((item, _index) => {
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if (item.hasCustomPosition()) {
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// 适配自定义位置
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return
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}
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let _offset = 0
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// 下面的节点往下移
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if (_index > index) {
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_offset = addHeight
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}
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item.top += _offset
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// 同步更新子节点的位置
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if (item.children && item.children.length) {
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this.updateChildren(item.children, 'top', _offset)
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}
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})
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// 更新父节点的位置
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this.updateBrothersTop(node.parent, addHeight)
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}
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}
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// 绘制连线，连接该节点到其子节点
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renderLine(node, lines, style) {
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if (node.children.length <= 0) {
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return []
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}
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let { left, top, width, height, expandBtnSize } = node
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let len = node.children.length
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let marginX = this.getMarginX(node.layerIndex + 1)
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if (node.isRoot) {
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// 根节点
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let x1 = left + width / 2
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let y1 = top + height
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let s1 = marginX * 0.7
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let minx = Infinity
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let maxx = -Infinity
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node.children.forEach((item, index) => {
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let x2 = item.left + item.width / 2
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let y2 = item.top
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if (x2 < minx) {
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minx = x2
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}
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if (x2 > maxx) {
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maxx = x2
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}
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// 节点使用横线风格，需要额外渲染横线
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let nodeUseLineStylePath = this.mindMap.themeConfig.nodeUseLineStyle
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? ` L ${item.left},${y2} L ${item.left + item.width},${y2}`
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: ''
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let path =
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`M ${x2},${y1 + s1} L ${x2},${y1 + s1 > y2 ? y2 + item.height : y2}` +
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nodeUseLineStylePath
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// 竖线
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lines[index].plot(path)
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style && style(lines[index], item)
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})
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minx = Math.min(minx, x1)
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maxx = Math.max(maxx, x1)
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// 父节点的竖线
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let line1 = this.draw.path()
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node.style.line(line1)
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line1.plot(`M ${x1},${y1} L ${x1},${y1 + s1}`)
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node._lines.push(line1)
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style && style(line1, node)
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// 水平线
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if (len > 0) {
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let lin2 = this.draw.path()
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node.style.line(lin2)
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lin2.plot(`M ${minx},${y1 + s1} L ${maxx},${y1 + s1}`)
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node._lines.push(lin2)
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style && style(lin2, node)
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}
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} else {
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// 非根节点
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let y1 = top + height
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let maxy = -Infinity
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let x2 = node.left + node.width * 0.3
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node.children.forEach((item, index) => {
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// 为了适配自定义位置，下面做了各种位置的兼容
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let y2 = item.top + item.height / 2
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if (y2 > maxy) {
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maxy = y2
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}
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// 水平线
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let path = ''
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let _left = item.left
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let _isLeft = item.left + item.width < x2
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let _isXCenter = false
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if (_isLeft) {
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// 水平位置在父节点左边
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_left = item.left + item.width
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} else if (item.left < x2 && item.left + item.width > x2) {
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// 水平位置在父节点之间
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_isXCenter = true
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y2 = item.top
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maxy = y2
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}
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if (y2 > top && y2 < y1) {
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// 自定义位置的情况：垂直位置节点在父节点之间
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path = `M ${
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_isLeft ? node.left : node.left + node.width
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},${y2} L ${_left},${y2}`
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} else if (y2 < y1) {
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// 自定义位置的情况：垂直位置节点在父节点上面
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if (_isXCenter) {
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y2 = item.top + item.height
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_left = x2
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}
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path = `M ${x2},${top} L ${x2},${y2} L ${_left},${y2}`
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} else {
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if (_isXCenter) {
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_left = x2
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}
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path = `M ${x2},${y2} L ${_left},${y2}`
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}
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// 节点使用横线风格，需要额外渲染横线
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let nodeUseLineStylePath = this.mindMap.themeConfig.nodeUseLineStyle
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? ` L ${_left},${y2 - item.height / 2} L ${_left},${
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y2 + item.height / 2
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}`
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: ''
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path += nodeUseLineStylePath
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lines[index].plot(path)
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style && style(lines[index], item)
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})
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// 竖线
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if (len > 0) {
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let lin2 = this.draw.path()
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expandBtnSize = len > 0 ? expandBtnSize : 0
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node.style.line(lin2)
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if (maxy < y1 + expandBtnSize) {
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lin2.hide()
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} else {
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lin2.plot(`M ${x2},${y1 + expandBtnSize} L ${x2},${maxy}`)
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lin2.show()
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}
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node._lines.push(lin2)
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style && style(lin2, node)
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}
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}
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}
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// 渲染按钮
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renderExpandBtn(node, btn) {
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let { width, height, expandBtnSize, isRoot } = node
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if (!isRoot) {
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let { translateX, translateY } = btn.transform()
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btn.translate(
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width * 0.3 - expandBtnSize / 2 - translateX,
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height + expandBtnSize / 2 - translateY
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)
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}
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}
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// 创建概要节点
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renderGeneralization(node, gLine, gNode) {
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let {
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top,
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bottom,
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right,
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generalizationLineMargin,
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generalizationNodeMargin
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} = this.getNodeBoundaries(node, 'h')
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let x1 = right + generalizationLineMargin
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let y1 = top
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let x2 = right + generalizationLineMargin
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let y2 = bottom
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let cx = x1 + 20
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let cy = y1 + (y2 - y1) / 2
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let path = `M ${x1},${y1} Q ${cx},${cy} ${x2},${y2}`
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gLine.plot(path)
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gNode.left = right + generalizationNodeMargin
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gNode.top = top + (bottom - top - gNode.height) / 2
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}
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}
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export default CatalogOrganization
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