Feat：1.新增beforeAddHistory事件；2.新增处理base64格式存储的插件

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

@@ -87,6 +87,7 @@ import RainbowLines from 'simple-mind-map/src/plugins/RainbowLines.js'
 import Demonstrate from 'simple-mind-map/src/plugins/Demonstrate.js'
 import OuterFrame from 'simple-mind-map/src/plugins/OuterFrame.js'
 import MindMapLayoutPro from 'simple-mind-map/src/plugins/MindMapLayoutPro.js'
+import NodeBase64ImageStorage from 'simple-mind-map/src/plugins/NodeBase64ImageStorage.js'
 import Themes from 'simple-mind-map-plugin-themes'
 // 协同编辑插件
 // import Cooperate from 'simple-mind-map/src/plugins/Cooperate.js'
@@ -161,6 +162,7 @@ MindMap.usePlugin(MiniMap)
   .usePlugin(Demonstrate)
   .usePlugin(OuterFrame)
   .usePlugin(MindMapLayoutPro)
+  .usePlugin(NodeBase64ImageStorage)
 // .usePlugin(Cooperate) // 协同插件
 
 // 注册主题

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

@@ -3,7 +3,7 @@
     class="nodeImageDialog"
     :title="$t('nodeImage.title')"
     :visible.sync="dialogVisible"
-    :width="isMobile ? '90%' : '50%'"
+    :width="isMobile ? '90%' : '600px'"
     :top="isMobile ? '20px' : '15vh'"
   >
     <div class="title">方式一</div>