From dc096fd5359d4e14010c395246cfe3a80120d453 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, 24 Jun 2024 18:52:36 +0800
Subject: [PATCH] =?UTF-8?q?Feat=EF=BC=9A=E9=98=BB=E6=AD=A2mousedown?=
 =?UTF-8?q?=E3=80=81mousemove=E3=80=81drag=E3=80=81node=5Fmousedown?=
 =?UTF-8?q?=E4=BA=8B=E4=BB=B6=E7=9A=84=E9=BB=98=E8=AE=A4=E8=A1=8C=E4=B8=BA?=
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---
 simple-mind-map/src/core/event/Event.js      | 2 ++
 simple-mind-map/src/core/render/node/Node.js | 1 +
 2 files changed, 3 insertions(+)

diff --git a/simple-mind-map/src/core/event/Event.js b/simple-mind-map/src/core/event/Event.js
index 0a5f2ad5..b81d95e6 100644
--- a/simple-mind-map/src/core/event/Event.js
+++ b/simple-mind-map/src/core/event/Event.js
@@ -99,6 +99,7 @@ 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
@@ -114,6 +115,7 @@ 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/simple-mind-map/src/core/render/node/Node.js b/simple-mind-map/src/core/render/node/Node.js
index be1fa6c1..0da0c0bb 100644
--- a/simple-mind-map/src/core/render/node/Node.js
+++ b/simple-mind-map/src/core/render/node/Node.js
@@ -515,6 +515,7 @@ class Node {
       this.active(e)
     })
     this.group.on('mousedown', e => {
+      e.preventDefault()
       const {
         readonly,
         enableCtrlKeyNodeSelection,