Add: LabelWidthAttribute

Alchemy/Assets/Alchemy/Editor/BuiltinAttributeDrawers.cs

@@ -112,6 +112,31 @@ public override void OnCreateElement()
         }
     }
 
+    [CustomAttributeDrawer(typeof(LabelWidthAttribute))]
+    public sealed class LabelWidthDrawer : AlchemyAttributeDrawer
+    {
+        public override void OnCreateElement()
+        {
+            var width = ((LabelWidthAttribute)Attribute).Width;
+
+            if (Element is AlchemyPropertyField field && field.FieldElement is PropertyField)
+            {
+                var executed = false;
+                field.schedule.Execute(() =>
+                {
+                    var label = field.Q<Label>();
+                    if (label == null) return;
+                    GUIHelper.SetMinAndCurrentWidth(label, width);
+                    executed = true;
+                }).Until(() => executed);
+
+                return;
+            }
+
+            Debug.LogWarning("The LabelWidth attribute currently only supports PropertyField and is ignored for other visual elements.");
+        }
+    }
+
     [CustomAttributeDrawer(typeof(HideIfAttribute))]
     public sealed class HideIfDrawer : TrackSerializedObjectAttributeDrawer
     {

Alchemy/Assets/Alchemy/Editor/Elements/AlchemyPropertyField.cs

@@ -1,6 +1,4 @@
 using System;
-using System.Linq;
-using System.Reflection;
 using UnityEditor;
 using UnityEditor.UIElements;
 using UnityEngine.UIElements;
@@ -73,6 +71,8 @@ public AlchemyPropertyField(SerializedProperty property, Type type, int depth, b
 
         readonly VisualElement element;
 
+        public VisualElement FieldElement => element;
+
         public string Label
         {
             get

Alchemy/Assets/Alchemy/Editor/Internal/GUIHelper.cs

@@ -98,7 +98,12 @@ public static IMGUIContainer CreateLine(Color color, float height)
                 rect.height = 1f;
                 EditorGUI.DrawRect(rect, color);
             });
+        }
 
+        public static void SetMinAndCurrentWidth(VisualElement visualElement, float value)
+        {
+            visualElement.style.minWidth = value;
+            visualElement.style.width = value;
         }
     }
 }

Alchemy/Assets/Alchemy/Runtime/Inspector/InspectorAttributes.cs

@@ -61,6 +61,13 @@ public sealed class LabelTextAttribute : Attribute
         public string Text { get; }
     }
 
+    [AttributeUsage(AttributeTargets.Field | AttributeTargets.Property | AttributeTargets.Method)]
+    public sealed class LabelWidthAttribute : Attribute
+    {
+        public LabelWidthAttribute(float width) => Width = width;
+        public float Width { get; }
+    }
+
     [AttributeUsage(AttributeTargets.Field | AttributeTargets.Property | AttributeTargets.Method)]
     public sealed class HideIfAttribute : Attribute
     {