From 182cdf5153c87c5d82a776c35002eb23269918b8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=A1=97=E8=A7=92=E5=B0=8F=E6=9E=97?= <1013335014@qq.com>
Date: Mon, 12 Aug 2024 10:58:17 +0800
Subject: [PATCH] =?UTF-8?q?Feat=EF=BC=9A=E4=B8=8D=E9=98=BB=E6=AD=A2mousedo?=
 =?UTF-8?q?wn=E3=80=81mousemove=E4=BA=8B=E4=BB=B6=E7=9A=84=E9=BB=98?=
 =?UTF-8?q?=E8=AE=A4=E8=A1=8C=E4=B8=BA?=
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---
 simple-mind-map/src/core/event/Event.js          | 2 --
 web/src/pages/Edit/components/FormulaSidebar.vue | 1 +
 web/src/pages/Edit/components/Navigator.vue      | 2 +-
 3 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/simple-mind-map/src/core/event/Event.js b/simple-mind-map/src/core/event/Event.js
index b81d95e6..0a5f2ad5 100644
--- a/simple-mind-map/src/core/event/Event.js
+++ b/simple-mind-map/src/core/event/Event.js
@@ -99,7 +99,6 @@ class Event extends EventEmitter {
 
   //  鼠标按下事件
   onMousedown(e) {
-    e.preventDefault()
     // 鼠标左键
     if (e.which === 1) {
       this.isLeftMousedown = true
@@ -115,7 +114,6 @@ class Event extends EventEmitter {
 
   //  鼠标移动事件
   onMousemove(e) {
-    e.preventDefault()
     let { useLeftKeySelectionRightKeyDrag } = this.mindMap.opt
     this.mousemovePos.x = e.clientX
     this.mousemovePos.y = e.clientY
diff --git a/web/src/pages/Edit/components/FormulaSidebar.vue b/web/src/pages/Edit/components/FormulaSidebar.vue
index 6ee47d2e..bf8217b5 100644
--- a/web/src/pages/Edit/components/FormulaSidebar.vue
+++ b/web/src/pages/Edit/components/FormulaSidebar.vue
@@ -80,6 +80,7 @@ export default {
     ...mapMutations(['setActiveSidebar']),
 
     init() {
+      if (!window.katex) return
       this.list = formulaList.map(item => {
         return {
           overview: window.katex.renderToString(
diff --git a/web/src/pages/Edit/components/Navigator.vue b/web/src/pages/Edit/components/Navigator.vue
index 530bcfea..fe5424a6 100644
--- a/web/src/pages/Edit/components/Navigator.vue
+++ b/web/src/pages/Edit/components/Navigator.vue
@@ -169,7 +169,7 @@ export default {
       if (!this.withTransition) {
         this.withTransition = true
       }
-      this.mindMap.miniMap.onMouseup(e)
+      if (this.mindMap.miniMap) this.mindMap.miniMap.onMouseup(e)
     },
 
     // 视口框的鼠标按下事件