Unity在Project视图里面显示文件的拓展名

Unity在Project视图里面显示文件的拓展名

功能脚本如下：

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using System.IO; using System.Reflection; using UnityEngine; using UnityEditor;   [InitializeOnLoad] public static class ShowFileExtensions {     static ShowFileExtensions()     {         EditorApplication.projectWindowItemOnGUI += ProjectWindowItemOnGUI;     }       private static void ProjectWindowItemOnGUI(string guid, Rect rect)     {         string assetPath = AssetDatabase.GUIDToAssetPath(guid);         Object obj = AssetDatabase.LoadAssetAtPath<Object>(assetPath);           if (obj != null && AssetDatabase.IsMainAsset(obj) && !IsDirectory(obj))         {             if (showBigIcon)             {                 string extension = Path.GetExtension(assetPath);                 GUI.Label(rect, extension, EditorStyles.boldLabel);             }             else             {                 var fileName = Path.GetFileName(assetPath);                 var labelRect = rect.Translate();                 GUI.Label(labelRect, fileName);             }         }           EditorApplication.RepaintProjectWindow();     }       private static bool showBigIcon     {         get { return IsTwoColumnMode && listAreaGridSize > 16f; }     }         private static bool IsTwoColumnMode     {         get         {             var projectWindow = GetProjectWindow();             var projectWindowType = projectWindow.GetType();             var modeFileInfo = projectWindowType.GetField("m_ViewMode", BindingFlags.Instance | BindingFlags.NonPublic);             int mode = (int) modeFileInfo.GetValue(projectWindow);             return mode == 1;         }     }       private static float listAreaGridSize     {         get         {             var projectWindow = GetProjectWindow();             var projectWindowType = projectWindow.GetType();             var propertyInfo = projectWindowType.GetProperty("listAreaGridSize", BindingFlags.Instance | BindingFlags.Public);             return (float) propertyInfo.GetValue(projectWindow, null);         }     }       private static EditorWindow GetProjectWindow()     {         if (EditorWindow.focusedWindow != null && EditorWindow.focusedWindow.titleContent.text == "Project")         {             return EditorWindow.focusedWindow;         }           return GetExistingWindowByName("Project");     }       private static EditorWindow GetExistingWindowByName(string name)     {         EditorWindow[] windows = Resources.FindObjectsOfTypeAll<EditorWindow>();         foreach (var item in windows)         {             if (item.titleContent.text == name)             {                 return item;             }         }           return default(EditorWindow);     }       private static Rect Translate(this Rect rect)     {         rect.x += 15.8f;         rect.y += 0.9f;         return rect;     }       private static bool IsDirectory(Object obj)     {         if (obj == null)         {             return false;         }           return obj is DefaultAsset && !AssetDatabase.IsForeignAsset(obj);     } }