From fb2d53664bb250f90b12a0c371ba951235a7ad64 Mon Sep 17 00:00:00 2001
From: neveler <55753029+neveler@users.noreply.github.com>
Date: Fri, 16 Jan 2026 20:33:20 +0800
Subject: [PATCH] =?UTF-8?q?=E6=94=AF=E6=8C=81=E9=80=9A=E8=BF=87=E6=8B=96?=
 =?UTF-8?q?=E5=8A=A8=E6=A0=87=E9=A2=98=E6=A0=8F=E9=80=80=E5=87=BA=E6=9C=80?=
 =?UTF-8?q?=E5=A4=A7=E5=8C=96=20(#5172)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

close #5138
---
 .../jackhuang/hmcl/ui/decorator/DecoratorSkin.java   | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorSkin.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorSkin.java
index 68fd45c9e..6c6a824b8 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorSkin.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/decorator/DecoratorSkin.java
@@ -328,6 +328,18 @@ public class DecoratorSkin extends SkinBase<Decorator> {
             }
             if (onTitleBarDoubleClick != null)
                 center.setOnMouseClicked(onTitleBarDoubleClick);
+            center.setOnMouseDragged(mouseEvent -> {
+                if (!getSkinnable().isDragging() && primaryStage.isMaximized()) {
+                    getSkinnable().setDragging(true);
+                    mouseInitX = mouseEvent.getScreenX();
+                    mouseInitY = mouseEvent.getScreenY();
+                    primaryStage.setMaximized(false);
+                    stageInitWidth = primaryStage.getWidth();
+                    stageInitHeight = primaryStage.getHeight();
+                    primaryStage.setY(stageInitY = 0);
+                    primaryStage.setX(stageInitX = mouseInitX - stageInitWidth / 2);
+                }
+            });
             navBar.setCenter(center);
 
             if (canRefresh) {