From 04a22ee760dfcbfe753231e4cfb89c1f1d0e991e Mon Sep 17 00:00:00 2001
From: dong <58670809@qq.com>
Date: Fri, 8 Jul 2022 16:34:02 +0800
Subject: [PATCH] =?UTF-8?q?=E6=8B=96=E6=8B=BD=E8=B6=85=E5=87=BA=E6=97=B6?=
 =?UTF-8?q?=E9=99=90=E5=88=B6=E4=BD=8D=E7=BD=AE?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/directive/dialogDrag/dialogDrag.js | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/src/directive/dialogDrag/dialogDrag.js b/src/directive/dialogDrag/dialogDrag.js
index 36af40898..473b2e953 100644
--- a/src/directive/dialogDrag/dialogDrag.js
+++ b/src/directive/dialogDrag/dialogDrag.js
@@ -10,10 +10,12 @@ export default {
         const sty = dragDom.currentStyle || window.getComputedStyle(dragDom, null);
 
         dialogHeaderEl.onmousedown = (e) => {
-			e.stopPropagation();
+            e.stopPropagation();
             /**  鼠标按下，计算当前元素距离可视区的距离*/
             const disX = e.clientX - dialogHeaderEl.offsetLeft;
             const disY = e.clientY - dialogHeaderEl.offsetTop;
+            const oY = e.offsetY;
+            const bY = dialogHeaderEl.offsetHeight - e.offsetY;
 
             /**  获取到的值带px 正则匹配替换*/
             let styL, styT;
@@ -31,10 +33,17 @@ export default {
             }
 
             document.onmousemove = function (e) {
-				e.stopPropagation();
+                e.stopPropagation();
+                let cY = e.clientY;
+                if (cY < oY) {
+                    cY = oY;
+                }
+                if (cY > document.body.clientHeight - bY) {
+                    cY = document.body.clientHeight - bY;
+                }
                 /** 通过事件委托，计算移动的距离*/
                 const l = e.clientX - disX;
-                const t = e.clientY - disY;
+                const t = cY - disY;
 
                 /** 移动当前元素*/
                 dragDom.style.left = `${l + styL}px`;
@@ -48,7 +57,7 @@ export default {
             };
 
             document.onmouseup = function () {
-				e.stopPropagation();
+                e.stopPropagation();
                 document.onmousemove = null;
                 document.onmouseup = null;
             };