update UIElements

Assets/YooAsset/Editor/UIElements/ElementsDefine/PanelSplitView.cs

@@ -17,7 +17,7 @@ namespace YooAsset.Editor
         {
         }
 #else
-        public new class UxmlFactory : UxmlFactory<PanelSplitView, TwoPaneSplitView.UxmlTraits>
+        public new class UxmlFactory : UxmlFactory<PanelSplitView, UxmlTraits>
         {
         }
 #endif

Assets/YooAsset/Editor/UIElements/ElementsDefine/ResizeHandle.cs

@@ -0,0 +1,111 @@
+#if UNITY_2019_4_OR_NEWER
+using System;
+using UnityEditor;
+using UnityEngine;
+using UnityEditor.UIElements;
+using UnityEngine.UIElements;
+
+namespace YooAsset.Editor
+{
+    public class ResizeHandle : VisualElement
+    {
+        /// <summary>
+        ///  Instantiates a TableView using data from a UXML file.
+        /// </summary>
+        public new class UxmlFactory : UxmlFactory<ResizeHandle, UxmlTraits>
+        {
+        }
+
+        private bool _isResizing = false;
+        private float _initialWidth;
+        private Vector2 _initialMousePos;
+
+        /// <summary>
+        /// 控制的UI元素
+        /// </summary>
+        public VisualElement ControlTarget { get; set; }
+
+        /// <summary>
+        /// 控制元素的最小宽度
+        /// </summary>
+        public int ControlMinWidth { get; set; }
+
+        /// <summary>
+        /// 控制元素的最大宽度
+        /// </summary>
+        public int ControlMaxWidth { get; set; }
+
+        /// <summary>
+        /// 尺寸发生变化
+        /// </summary>
+        public Action<float> ResizeChanged { get; set; }
+
+        public ResizeHandle()
+        {
+            int defaultWidth = 5;
+            this.style.width = defaultWidth;
+            this.style.minWidth = defaultWidth;
+            this.style.maxWidth = defaultWidth;
+            this.style.opacity = 0;
+            this.style.cursor = UIElementsCursor.CreateCursor(MouseCursor.ResizeHorizontal);
+
+            this.RegisterCallback<MouseDownEvent>(OnMouseDown);
+            this.RegisterCallback<MouseMoveEvent>(OnMouseMove);
+            this.RegisterCallback<MouseUpEvent>(OnMouseUp);
+        }
+        public ResizeHandle(int handleWidth, VisualElement controlTarget, int controlMinWidth, int controlMaxWidth)
+        {
+            ControlTarget = controlTarget;
+            ControlMinWidth = controlMinWidth;
+            ControlMaxWidth = controlMaxWidth;
+
+            this.style.width = handleWidth;
+            this.style.minWidth = handleWidth;
+            this.style.maxWidth = handleWidth;
+            this.style.opacity = 0;
+            this.style.cursor = UIElementsCursor.CreateCursor(MouseCursor.ResizeHorizontal);
+
+            this.RegisterCallback<MouseDownEvent>(OnMouseDown);
+            this.RegisterCallback<MouseMoveEvent>(OnMouseMove);
+            this.RegisterCallback<MouseUpEvent>(OnMouseUp);
+        }
+
+        private void OnMouseDown(MouseDownEvent evt)
+        {
+            // 鼠标左键按下
+            if (ControlTarget != null && evt.button == 0)
+            {
+                _isResizing = true;
+                _initialWidth = ControlTarget.resolvedStyle.width;
+                _initialMousePos = evt.mousePosition;
+                this.CaptureMouse();
+            }
+        }
+        private void OnMouseMove(MouseMoveEvent evt)
+        {
+            if (ControlTarget != null && _isResizing)
+            {
+                // 计算鼠标移动距离
+                float deltaX = evt.mousePosition.x - _initialMousePos.x;
+
+                // 更新控制元素尺寸
+                float newWidth = _initialWidth + deltaX;
+                float width = Mathf.Clamp(newWidth, ControlMinWidth, ControlMaxWidth);
+                ControlTarget.style.width = width;
+                ControlTarget.style.minWidth = width;
+                ControlTarget.style.maxWidth = width;
+                ResizeChanged?.Invoke(width);
+            }
+        }
+        private void OnMouseUp(MouseUpEvent evt)
+        {
+            // 鼠标左键释放
+            if (ControlTarget != null && evt.button == 0)
+            {
+                _isResizing = false;
+                this.ReleaseMouse();
+            }
+        }
+    }
+}
+#endif

Assets/YooAsset/Editor/UIElements/ElementsDefine/ResizeHandle.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: adb565f9b5e9fb3428e54d0cfd58676d
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: