mirror of
https://github.com/wanglin2/mind-map.git
synced 2026-02-21 18:37:43 +08:00
324 lines
9.7 KiB
JavaScript
324 lines
9.7 KiB
JavaScript
import Base from './Base'
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import { walk, asyncRun, getNodeIndexInNodeList } from '../utils'
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// 组织结构图
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// 和逻辑结构图基本一样，只是方向变成向下生长，所以先计算节点的top，后计算节点的left、最后调整节点的left即可
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class OrganizationStructure 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.computedLeftValue()
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},
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() => {
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this.adjustLeftValue()
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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, index, ancestors) => {
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let newNode = this.createNode(
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cur,
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parent,
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isRoot,
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layerIndex,
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index,
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ancestors
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)
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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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// 定位到父节点下方
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newNode.top =
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parent._node.top + parent._node.height + this.getMarginX(layerIndex)
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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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// 返回时计算节点的areaWidth，也就是子节点所占的宽度之和，包括外边距
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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.getMarginY(layerIndex + 1)
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: 0
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// 如果存在概要，则和概要的高度取最大值
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let generalizationNodeWidth = cur._node.checkHasGeneralization()
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? cur._node._generalizationNodeWidth + this.getMarginY(layerIndex + 1)
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: 0
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cur._node.childrenAreaWidth2 = Math.max(
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cur._node.childrenAreaWidth,
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generalizationNodeWidth
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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
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computedLeftValue() {
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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.getData('expand') && node.children && node.children.length) {
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let marginX = this.getMarginY(layerIndex + 1)
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// 第一个子节点的left值 = 该节点中心的left值 - 子节点的宽度之和的一半
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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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}
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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
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adjustLeftValue() {
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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.getData('expand')) {
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return
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}
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// 判断子节点所占的宽度之和是否大于该节点自身，大于则需要调整位置
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let difference =
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node.childrenAreaWidth2 -
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this.getMarginY(layerIndex + 1) * 2 -
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node.width
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if (difference > 0) {
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this.updateBrothers(node, difference / 2)
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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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// 更新兄弟节点的left
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updateBrothers(node, addWidth) {
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if (node.parent) {
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let childrenList = node.parent.children
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let index = getNodeIndexInNodeList(node, childrenList)
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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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// 上面的节点往上移
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if (_index < index) {
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_offset = -addWidth
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} else if (_index > index) {
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// 下面的节点往下移
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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.updateBrothers(node.parent, addWidth)
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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, lineStyle) {
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if (lineStyle === 'curve') {
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this.renderLineCurve(node, lines, style)
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} else if (lineStyle === 'direct') {
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this.renderLineDirect(node, lines, style)
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} else {
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this.renderLineStraight(node, lines, style)
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}
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}
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// 曲线风格连线
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renderLineCurve(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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const { alwaysShowExpandBtn, notShowExpandBtn } = this.mindMap.opt
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if (!alwaysShowExpandBtn || notShowExpandBtn) {
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expandBtnSize = 0
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}
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const {
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nodeUseLineStyle,
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rootLineStartPositionKeepSameInCurve,
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rootLineKeepSameInCurve
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} = this.mindMap.themeConfig
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node.children.forEach((item, index) => {
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if (node.layerIndex === 0) {
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expandBtnSize = 0
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}
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let x1 = left + width / 2
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let y1 =
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node.layerIndex === 0 && !rootLineStartPositionKeepSameInCurve
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? top + height / 2
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: top + height + expandBtnSize
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let x2 = item.left + item.width / 2
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let y2 = item.top
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let path = ''
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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 = nodeUseLineStyle
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? ` L ${item.left},${y2} L ${item.left + item.width},${y2}`
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: ''
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if (node.isRoot && !rootLineKeepSameInCurve) {
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path =
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this.quadraticCurvePath(x1, y1, x2, y2, true) + nodeUseLineStylePath
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} else {
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path = this.cubicBezierPath(x1, y1, x2, y2, true) + nodeUseLineStylePath
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}
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this.setLineStyle(style, lines[index], path, item)
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})
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}
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// 直连风格
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renderLineDirect(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 } = node
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const { nodeUseLineStyle } = this.mindMap.themeConfig
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let x1 = left + width / 2
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let y1 = top + height
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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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// 节点使用横线风格，需要额外渲染横线
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let nodeUseLineStylePath = 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 = `M ${x1},${y1} L ${x2},${y2}` + nodeUseLineStylePath
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this.setLineStyle(style, lines[index], path, item)
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})
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}
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// 直线风格连线
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renderLineStraight(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, isRoot } = node
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const { alwaysShowExpandBtn, notShowExpandBtn } = this.mindMap.opt
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if (!alwaysShowExpandBtn || notShowExpandBtn) {
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expandBtnSize = 0
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}
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let x1 = left + width / 2
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let y1 = top + height
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let marginX = this.getMarginX(node.layerIndex + 1)
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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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let len = node.children.length
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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 = y1 + s1 > item.top ? item.top + item.height : 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 = `M ${x2},${y1 + s1} L ${x2},${y2}` + nodeUseLineStylePath
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this.setLineStyle(style, lines[index], path, item)
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})
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minx = Math.min(x1, minx)
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maxx = Math.max(x1, maxx)
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// 父节点的竖线
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let line1 = this.lineDraw.path()
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node.style.line(line1)
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expandBtnSize = len > 0 && !isRoot ? expandBtnSize : 0
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line1.plot(
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this.transformPath(`M ${x1},${y1 + expandBtnSize} L ${x1},${y1 + s1}`)
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)
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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.lineDraw.path()
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node.style.line(lin2)
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lin2.plot(this.transformPath(`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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}
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// 渲染按钮
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renderExpandBtn(node, btn) {
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let { width, height, expandBtnSize } = node
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let { translateX, translateY } = btn.transform()
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btn.translate(
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width / 2 - expandBtnSize / 2 - translateX,
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height + expandBtnSize / 2 - translateY
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)
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}
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// 创建概要节点
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renderGeneralization(list) {
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list.forEach(item => {
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let {
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bottom,
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left,
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right,
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generalizationLineMargin,
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generalizationNodeMargin
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} = this.getNodeGeneralizationRenderBoundaries(item, 'v')
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let x1 = left
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let y1 = bottom + generalizationLineMargin
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let x2 = right
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let y2 = bottom + generalizationLineMargin
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let cx = x1 + (x2 - x1) / 2
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let cy = y1 + 20
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let path = `M ${x1},${y1} Q ${cx},${cy} ${x2},${y2}`
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item.generalizationLine.plot(this.transformPath(path))
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item.generalizationNode.top = bottom + generalizationNodeMargin
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item.generalizationNode.left =
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left + (right - left - item.generalizationNode.width) / 2
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})
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}
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// 渲染展开收起按钮的隐藏占位元素
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renderExpandBtnRect(rect, expandBtnSize, width, height, node) {
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rect.size(width, expandBtnSize).x(0).y(height)
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}
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}
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export default OrganizationStructure
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