Demo：右键菜单新增复制到剪贴板功能

simple-mind-map/src/utils/index.js

@@ -207,7 +207,7 @@ export const copyNodeTree = (
 }
 
 //  图片转成dataURL
-export const imgToDataUrl = src => {
+export const imgToDataUrl = (src, returnBlob = false) => {
   return new Promise((resolve, reject) => {
     const img = new Image()
     // 跨域图片需要添加这个属性，否则画布被污染了无法导出图片
@@ -220,7 +220,13 @@ export const imgToDataUrl = src => {
         let ctx = canvas.getContext('2d')
         // 图片绘制到canvas里
         ctx.drawImage(img, 0, 0, img.width, img.height)
-        resolve(canvas.toDataURL())
+        if (returnBlob) {
+          canvas.toBlob(blob => {
+            resolve(blob)
+          })
+        } else {
+          resolve(canvas.toDataURL())
+        }
       } catch (e) {
         reject(e)
       }

web/src/lang/en_us.js

@@ -100,7 +100,15 @@ export default {
     removeNote: 'Remove note',
     removeCustomStyles: 'Remove custom styles',
     removeAllNodeCustomStyles: 'Remove all node custom styles',
-    exportNodeToPng: 'Export node to png'
+    exportNodeToPng: 'Export node to png',
+    copyToClipboard: 'Copy to clipboard',
+    copyToSmm: 'SMM',
+    copyToJson: 'JSON',
+    copyToMarkdown: 'Markdown',
+    copyToTxt: 'Txt',
+    copyToPng: 'Png',
+    copySuccess: 'Copy success',
+    copyFail: 'Copy fail'
   },
   count: {
     words: 'Words',

web/src/lang/zh_cn.js

@@ -100,7 +100,15 @@ export default {
     removeNote: '移除备注',
     removeCustomStyles: '一键去除自定义样式',
     removeAllNodeCustomStyles: '一键去除所有节点自定义样式',
-    exportNodeToPng: '导出该节点为图片'
+    exportNodeToPng: '导出该节点为图片',
+    copyToClipboard: '复制到剪贴板',
+    copyToSmm: 'SMM',
+    copyToJson: 'JSON',
+    copyToMarkdown: 'Markdown',
+    copyToTxt: 'Txt',
+    copyToPng: '图片',
+    copySuccess: '复制成功',
+    copyFail: '复制失败'
   },
   count: {
     words: '字数',

web/src/pages/Edit/components/Contextmenu.vue

@@ -109,6 +109,7 @@
       </div>
       <div class="item">
         <span class="name">{{ $t('contextmenu.expandTo') }}</span>
+        <span class="el-icon-arrow-right"></span>
         <div class="subItems listBox" :class="{ isDark: isDark }">
           <div
             class="item"
@@ -137,13 +138,30 @@
           $t('contextmenu.removeAllNodeCustomStyles')
         }}</span>
       </div>
+      <div class="item">
+        <span class="name">{{ $t('contextmenu.copyToClipboard') }}</span>
+        <span class="el-icon-arrow-right"></span>
+        <div class="subItems listBox" :class="{ isDark: isDark }">
+          <div
+            class="item"
+            v-for="item in copyList"
+            :key="item.value"
+            @click="copyToClipboard(item.value)"
+          >
+            {{ item.name }}
+          </div>
+        </div>
+      </div>
     </template>
   </div>
 </template>
 
 <script>
 import { mapState, mapMutations } from 'vuex'
-import { getTextFromHtml } from 'simple-mind-map/src/utils'
+import { getTextFromHtml, imgToDataUrl } from 'simple-mind-map/src/utils'
+import { transformToMarkdown } from 'simple-mind-map/src/parse/toMarkdown'
+import { transformToTxt } from 'simple-mind-map/src/parse/toTxt'
+import { setDataToClipboard, setImgToClipboard, copy } from '@/utils'
 
 /**
  * @Author: 王林
@@ -166,7 +184,8 @@ export default {
       type: '',
       isMousedown: false,
       mosuedownX: 0,
-      mosuedownY: 0
+      mosuedownY: 0,
+      enableCopyToClipboardApi: navigator.clipboard
     }
   },
   computed: {
@@ -184,6 +203,33 @@ export default {
         this.$t('contextmenu.level6')
       ]
     },
+    copyList() {
+      const list = [
+        {
+          name: this.$t('contextmenu.copyToSmm'),
+          value: 'smm'
+        },
+        {
+          name: this.$t('contextmenu.copyToJson'),
+          value: 'json'
+        },
+        {
+          name: this.$t('contextmenu.copyToMarkdown'),
+          value: 'md'
+        },
+        {
+          name: this.$t('contextmenu.copyToTxt'),
+          value: 'txt'
+        }
+      ]
+      if (this.enableCopyToClipboardApi) {
+        list.push({
+          name: this.$t('contextmenu.copyToPng'),
+          value: 'png'
+        })
+      }
+      return list
+    },
     insertNodeBtnDisabled() {
       return !this.node || this.node.isRoot || this.node.isGeneralization
     },
@@ -355,6 +401,48 @@ export default {
           break
       }
       this.hide()
+    },
+
+    // 复制到剪贴板
+    async copyToClipboard(type) {
+      try {
+        this.hide()
+        let data
+        let str
+        switch (type) {
+          case 'smm':
+          case 'json':
+            data = this.mindMap.getData(true)
+            str = JSON.stringify(data)
+            break
+          case 'md':
+            data = this.mindMap.getData()
+            str = transformToMarkdown(data)
+            break
+          case 'txt':
+            data = this.mindMap.getData()
+            str = transformToTxt(data)
+            break
+          case 'png':
+            const png = await this.mindMap.export('png', false)
+            const blob = await imgToDataUrl(png, true)
+            setImgToClipboard(blob)
+            break
+          default:
+            break
+        }
+        if (str) {
+          if (this.enableCopyToClipboardApi) {
+            setDataToClipboard(str)
+          } else {
+            copy(str)
+          }
+        }
+        this.$message.success(this.$t('contextmenu.copySuccess'))
+      } catch (error) {
+        console.log(error)
+        this.$message.error(this.$t('contextmenu.copyFail'))
+      }
     }
   }
 }
@@ -393,11 +481,11 @@ export default {
   .item {
     position: relative;
     height: 28px;
-    line-height: 28px;
     padding: 0 16px;
     cursor: pointer;
     display: flex;
     justify-content: space-between;
+    align-items: center;
 
     &.danger {
       color: #f56c6c;
@@ -439,6 +527,7 @@ export default {
       left: 100%;
       top: 0;
       visibility: hidden;
+      width: 150px;
     }
   }
 }

web/src/utils/index.js

@@ -49,11 +49,28 @@ export const fileToBuffer = file => {
 }
 
 // 复制文本到剪贴板
-export const copy = (text) => {
-  const input = document.createElement('input')
-  input.setAttribute('value', text)
+export const copy = text => {
+  // 使用textarea可以保留换行
+  const input = document.createElement('textarea')
+  // input.setAttribute('value', text)
+  input.innerHTML = text
   document.body.appendChild(input)
   input.select()
   document.execCommand('copy')
   document.body.removeChild(input)
 }
+
+// 复制文本到剪贴板
+export const setDataToClipboard = data => {
+  if (navigator.clipboard) {
+    navigator.clipboard.writeText(data)
+  }
+}
+
+// 复制图片到剪贴板
+export const setImgToClipboard = img => {
+  if (navigator.clipboard) {
+    const data = [new ClipboardItem({ ['image/png']: img })]
+    navigator.clipboard.write(data)
+  }
+}