Feat：新增开启节点文本编辑实时更新节点大小和位置的实例化选项

simple-mind-map/src/constants/defaultOptions.js

@@ -238,6 +238,10 @@ export const defaultOpt = {
     padding: 100, // 超出画布四周指定范围内依旧渲染节点
     removeNodeWhenOutCanvas: true // 节点移除画布可视区域后从画布删除
   },
+  // 如果节点文本为空，那么为了避免空白节点高度塌陷，会用该字段指定的文本测量一个高度
+  emptyTextMeasureHeightText: 'abc123我和你',
+  // 是否在进行节点文本编辑时实时更新节点大小和节点位置，开启后当节点数量比较多时可能会造成卡顿
+  openRealtimeRenderOnNodeTextEdit: false,
 
   // 【Select插件】
   // 多选节点时鼠标移动到边缘时的画布移动偏移量

simple-mind-map/src/core/render/Render.js

@@ -147,6 +147,19 @@ class Render {
     })
     // 性能模式
     this.performanceMode()
+    // 实时渲染当节点文本编辑时
+    if (this.mindMap.opt.openRealtimeRenderOnNodeTextEdit) {
+      this.mindMap.on('node_text_edit_change', ({ node, text }) => {
+        node._textData = node.createTextNode(text)
+        const { width, height } = node.getNodeRect()
+        node.width = width
+        node.height = height
+        node.layout()
+        this.mindMap.render(() => {
+          this.textEdit.updateTextEditNode()
+        })
+      })
+    }
   }
 
   // 性能模式，懒加载节点

simple-mind-map/src/core/render/TextEdit.js

@@ -25,6 +25,8 @@ export default class TextEdit {
     // 如果编辑过程中缩放画布了，那么缓存当前编辑的内容
     this.cacheEditingText = ''
     this.hasBodyMousedown = false
+    this.textNodePaddingX = 5
+    this.textNodePaddingY = 3
     this.bindEvent()
   }
 
@@ -214,7 +216,7 @@ export default class TextEdit {
     this.registerTmpShortcut()
     if (!this.textEditNode) {
       this.textEditNode = document.createElement('div')
-      this.textEditNode.style.cssText = `position:fixed;box-sizing: border-box;background-color:#fff;box-shadow: 0 0 20px rgba(0,0,0,.5);padding: 3px 5px;margin-left: -5px;margin-top: -3px;outline: none; word-break: break-all;`
+      this.textEditNode.style.cssText = `position:fixed;box-sizing: border-box;background-color:#fff;box-shadow: 0 0 20px rgba(0,0,0,.5);padding: ${this.textNodePaddingY}px ${this.textNodePaddingX}px;margin-left: -5px;margin-top: -3px;outline: none; word-break: break-all;`
       this.textEditNode.setAttribute('contenteditable', true)
       this.textEditNode.addEventListener('keyup', e => {
         e.stopPropagation()
@@ -240,6 +242,13 @@ export default class TextEdit {
           handleInputPasteText(e)
         }
       })
+      this.textEditNode.addEventListener('input', () => {
+        this.mindMap.emit('node_text_edit_change', {
+          node: this.currentNode,
+          text: this.getEditText(),
+          richText: false
+        })
+      })
       const targetNode =
         this.mindMap.opt.customInnerElsAppendTo || document.body
       targetNode.appendChild(this.textEditNode)
@@ -256,8 +265,10 @@ export default class TextEdit {
     node.style.domText(this.textEditNode, scale, isMultiLine)
     this.textEditNode.style.zIndex = nodeTextEditZIndex
     this.textEditNode.innerHTML = textLines.join('<br>')
-    this.textEditNode.style.minWidth = rect.width + 10 + 'px'
+    this.textEditNode.style.minWidth =
-    this.textEditNode.style.minHeight = rect.height + 6 + 'px'
+      rect.width + this.textNodePaddingX * 2 + 'px'
+    this.textEditNode.style.minHeight =
+      rect.height + this.textNodePaddingY * 2 + 'px'
     this.textEditNode.style.left = rect.left + 'px'
     this.textEditNode.style.top = rect.top + 'px'
     this.textEditNode.style.display = 'block'
@@ -280,6 +291,24 @@ export default class TextEdit {
     this.cacheEditingText = ''
   }
 
+  // 更新文本编辑框的大小和位置
+  updateTextEditNode() {
+    if (this.mindMap.richText) {
+      this.mindMap.richText.updateTextEditNode()
+      return
+    }
+    if (!this.showTextEdit || !this.currentNode) {
+      return
+    }
+    const rect = this.currentNode._textData.node.node.getBoundingClientRect()
+    this.textEditNode.style.minWidth =
+      rect.width + this.textNodePaddingX * 2 + 'px'
+    this.textEditNode.style.minHeight =
+      rect.height + this.textNodePaddingY * 2 + 'px'
+    this.textEditNode.style.left = rect.left + 'px'
+    this.textEditNode.style.top = rect.top + 'px'
+  }
+
   // 删除文本编辑元素
   removeTextEditEl() {
     if (this.mindMap.richText) {

simple-mind-map/src/core/render/node/nodeCreateContents.js

@@ -114,8 +114,10 @@ function createIconNode() {
 }
 
 // 创建富文本节点
-function createRichTextNode() {
+function createRichTextNode(specifyText) {
-  const { textAutoWrapWidth } = this.mindMap.opt
+  let text =
+    typeof specifyText === 'string' ? specifyText : this.getData('text')
+  const { textAutoWrapWidth, emptyTextMeasureHeightText } = this.mindMap.opt
   let g = new G()
   // 重新设置富文本节点内容
   let recoverText = false
@@ -129,7 +131,6 @@ function createRichTextNode() {
       recoverText = true
     }
   }
-  let text = this.getData('text')
   if (recoverText && !isUndef(text)) {
     // 判断节点内容是否是富文本
     let isRichText = checkIsRichText(text)
@@ -153,7 +154,7 @@ function createRichTextNode() {
       text: text
     })
   }
-  let html = `<div>${this.getData('text')}</div>`
+  let html = `<div>${text}</div>`
   if (!this.mindMap.commonCaches.measureRichtextNodeTextSizeEl) {
     this.mindMap.commonCaches.measureRichtextNodeTextSizeEl =
       document.createElement('div')
@@ -174,7 +175,7 @@ function createRichTextNode() {
   let { width, height } = el.getBoundingClientRect()
   // 如果文本为空，那么需要计算一个默认高度
   if (height <= 0) {
-    div.innerHTML = '<p>abc123我和你</p>'
+    div.innerHTML = `<p>${emptyTextMeasureHeightText}</p>`
     let elTmp = div.children[0]
     elTmp.classList.add('smm-richtext-node-wrap')
     height = elTmp.getBoundingClientRect().height
@@ -199,10 +200,12 @@ function createRichTextNode() {
 }
 
 //  创建文本节点
-function createTextNode() {
+function createTextNode(specifyText) {
   if (this.getData('richText')) {
-    return this.createRichTextNode()
+    return this.createRichTextNode(specifyText)
   }
+  const text =
+    typeof specifyText === 'string' ? specifyText : this.getData('text')
   if (this.getData('resetRichText')) {
     delete this.nodeData.data.resetRichText
   }
@@ -212,10 +215,11 @@ function createTextNode() {
   // 文本超长自动换行
   let textStyle = this.style.getTextFontStyle()
   let textArr = []
-  if (!isUndef(this.getData('text'))) {
+  if (!isUndef(text)) {
-    textArr = String(this.getData('text')).split(/\n/gim)
+    textArr = String(text).split(/\n/gim)
   }
-  let maxWidth = this.mindMap.opt.textAutoWrapWidth
+  const { textAutoWrapWidth: maxWidth, emptyTextMeasureHeightText } =
+    this.mindMap.opt
   let isMultiLine = false
   textArr.forEach((item, index) => {
     let arr = item.split('')
@@ -247,6 +251,13 @@ function createTextNode() {
     g.add(node)
   })
   let { width, height } = g.bbox()
+  // 如果文本为空，那么需要计算一个默认高度
+  if (height <= 0) {
+    const tmpNode = new Text().text(emptyTextMeasureHeightText)
+    this.style.text(tmpNode)
+    const tmpBbox = tmpNode.bbox()
+    height = tmpBbox.height
+  }
   width = Math.min(Math.ceil(width), maxWidth)
   height = Math.ceil(height)
   g.attr('data-width', width)

simple-mind-map/src/plugins/RichText.js

@@ -57,6 +57,8 @@ class RichText {
     this.cacheEditingText = ''
     this.lostStyle = false
     this.isCompositing = false
+    this.textNodePaddingX = 6
+    this.textNodePaddingY = 4
     this.initOpt()
     this.extendQuill()
     this.appendCss()
@@ -71,14 +73,17 @@ class RichText {
   // 绑定事件
   bindEvent() {
     this.onCompositionStart = this.onCompositionStart.bind(this)
+    this.onCompositionUpdate = this.onCompositionUpdate.bind(this)
     this.onCompositionEnd = this.onCompositionEnd.bind(this)
     window.addEventListener('compositionstart', this.onCompositionStart)
+    window.addEventListener('compositionupdate', this.onCompositionUpdate)
     window.addEventListener('compositionend', this.onCompositionEnd)
   }
 
   // 解绑事件
   unbindEvent() {
     window.removeEventListener('compositionstart', this.onCompositionStart)
+    window.removeEventListener('compositionupdate', this.onCompositionUpdate)
     window.removeEventListener('compositionend', this.onCompositionEnd)
   }
 
@@ -198,8 +203,8 @@ class RichText {
     let scaleX = rect.width / originWidth
     let scaleY = rect.height / originHeight
     // 内边距
-    let paddingX = 6
+    let paddingX = this.textNodePaddingX
-    let paddingY = 4
+    let paddingY = this.textNodePaddingY
     if (richTextEditFakeInPlace) {
       let paddingValue = node.getPaddingVale()
       paddingX = paddingValue.paddingX
@@ -287,6 +292,20 @@ class RichText {
     this.cacheEditingText = ''
   }
 
+  // 更新文本编辑框的大小和位置
+  updateTextEditNode() {
+    if (!this.node) return
+    const rect = this.node._textData.node.node.getBoundingClientRect()
+    const g = this.node._textData.node
+    const originWidth = g.attr('data-width')
+    const originHeight = g.attr('data-height')
+    this.textEditNode.style.minWidth =
+      originWidth + this.textNodePaddingX * 2 + 'px'
+    this.textEditNode.style.minHeight = originHeight + 'px'
+    this.textEditNode.style.left = rect.left + 'px'
+    this.textEditNode.style.top = rect.top + 'px'
+  }
+
   // 删除文本编辑框元素
   removeTextEditEl() {
     if (!this.textEditNode) return
@@ -491,6 +510,11 @@ class RichText {
         this.setTextStyleIfNotRichText(this.node)
         this.lostStyle = false
       }
+      this.mindMap.emit('node_text_edit_change', {
+        node: this.node,
+        text: this.getEditText(),
+        richText: true
+      })
     })
     // 拦截粘贴，只允许粘贴纯文本
     // this.quill.clipboard.addMatcher(Node.TEXT_NODE, node => {
@@ -545,6 +569,16 @@ class RichText {
     this.isCompositing = true
   }
 
+  // 中文输入中
+  onCompositionUpdate() {
+    if (!this.showTextEdit || !this.node) return
+    this.mindMap.emit('node_text_edit_change', {
+      node: this.node,
+      text: this.getEditText(),
+      richText: true
+    })
+  }
+
   // 中文输入结束
   onCompositionEnd() {
     if (!this.showTextEdit) {