Unity3D研究院之Inspector面板枚举的别名与排序

虽然mono是支持unicode的。可以在枚举里写中文，但是我还是觉得写英文好一些。可是在编辑器上策划是希望看到的是中文的，还有就是枚举的展示排序功能，策划在编辑的时候为了方便希望把常用的枚举排上前面。

把如下代码放到你的工程里就可以直接用了。

 

 

 

C#

 

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using UnityEngine; using System; #if UNITY_EDITOR using UnityEditor; using System.Collections.Generic; using System.Linq; using System.Reflection; #endif   [AttributeUsage(AttributeTargets.Enum | AttributeTargets.Field)] public class EnumLabelAttribute : PropertyAttribute {     public string label;     public int[] order = new int[0] ;     public EnumLabelAttribute(string label)     {         this.label = label;     }       public EnumLabelAttribute(string label,params int[] order)     {         this.label = label;         this.order = order;     } }     #if UNITY_EDITOR [CustomPropertyDrawer(typeof(EnumLabelAttribute))] public class EnumLabelDrawer : PropertyDrawer {     private Dictionary<string, string> customEnumNames = new Dictionary<string, string>();         public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)     {         SetUpCustomEnumNames(property, property.enumNames);           if (property.propertyType == SerializedPropertyType.Enum)         {             EditorGUI.BeginChangeCheck();             string[] displayedOptions = property.enumNames                     .Where(enumName => customEnumNames.ContainsKey(enumName))                     .Select<string, string>(enumName => customEnumNames[enumName])                     .ToArray();               int[] indexArray = GetIndexArray (enumLabelAttribute.order);             if(indexArray.Length != displayedOptions.Length)             {                 indexArray = new int[displayedOptions.Length];                 for(int i =0; i< indexArray.Length; i++){                     indexArray[i] = i;                 }             }             string[] items = new string[displayedOptions.Length];             items[0] = displayedOptions[0];                   for (int i=0; i<displayedOptions.Length; i++) {                 items[i] =  displayedOptions[indexArray[i]];             }             int index = -1;             for (int i=0; i<indexArray.Length; i++) {                 if (indexArray[i] == property.enumValueIndex) {                     index = i;                     break;                 }             }             if ( (index == -1) && (property.enumValueIndex != -1) ) { SortingError (position,property,label); return; }             index = EditorGUI.Popup(position, enumLabelAttribute.label,index, items);             if (EditorGUI.EndChangeCheck())             {                 if (index >= 0)                     property.enumValueIndex = indexArray[index];             }         }     }       private EnumLabelAttribute enumLabelAttribute     {         get         {             return (EnumLabelAttribute)attribute;         }     }       public void SetUpCustomEnumNames(SerializedProperty property, string[] enumNames)     {                 object[] customAttributes = fieldInfo.GetCustomAttributes(typeof(EnumLabelAttribute), false);             foreach (EnumLabelAttribute customAttribute in customAttributes)             {                 Type enumType = fieldInfo.FieldType;                   foreach (string enumName in enumNames)                 {                     FieldInfo field = enumType.GetField(enumName);                     if (field == null) continue;                     EnumLabelAttribute[] attrs = (EnumLabelAttribute[])field.GetCustomAttributes(customAttribute.GetType(), false);                       if (!customEnumNames.ContainsKey(enumName))                     {                         foreach (EnumLabelAttribute labelAttribute in attrs)                         {                             customEnumNames.Add(enumName, labelAttribute.label);                         }                     }                 }             }     }         int[] GetIndexArray (int[] order)     {         int[] indexArray = new int[order.Length];         for (int i = 0; i < order.Length; i++) {             int index = 0;             for (int j = 0; j < order.Length; j++) {                                 if (order[i] > order[j]) {                                       index++;                                 }                           }             indexArray[i] = index;         }         return (indexArray);     }       void SortingError (Rect position, SerializedProperty property, GUIContent label)     {         EditorGUI.PropertyField(position, property, new GUIContent(label.text + " (sorting error)"));         EditorGUI.EndProperty();     } } public class EnumLabel {     static public object GetEnum(Type type, SerializedObject serializedObject, string path)     {         SerializedProperty property =  GetPropety(serializedObject,path);         return  System.Enum.GetValues(type).GetValue(property.enumValueIndex);     }     static public object DrawEnum(Type type, SerializedObject serializedObject, string path)     {         return DrawEnum(type,serializedObject, GetPropety(serializedObject,path));     }     static public object DrawEnum(Type type, SerializedObject serializedObject,SerializedProperty property)     {         serializedObject.Update();         EditorGUILayout.PropertyField(property);         serializedObject.ApplyModifiedProperties();         return  System.Enum.GetValues(type).GetValue(property.enumValueIndex);     }     static public SerializedProperty GetPropety(SerializedObject serializedObject, string path)     {         string []contents = path.Split('/');         SerializedProperty property =  serializedObject.FindProperty(contents[0]);         for(int i=1; i< contents.Length; i++){             property = property.FindPropertyRelative(contents[i]);         }         return property;     } } #endif

使用是这样的，第二个参数就是排序。接收int的不固定参数。

 

 

 

C#

 

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using UnityEngine; using System.Collections;   public class NewBehaviourScript : MonoBehaviour {     [EnumLabel("我是的类型",10,1,5,2)]     public NewType newType = NewType.One; }   public enum NewType : byte {     [EnumLabel("我是1")]     One = 10,     [EnumLabel("我是2")]     Two = 1,     [EnumLabel("我是3")]     Three = 5,     [EnumLabel("我是4")]     Four = 2 }

OK 中文与排序都OK了。

但是，有时候我们做编辑器的时候是自己调用OnInspectorGUI来绘制面板的。而且我的枚举对象可能会在另外一个子对象里，或者在子对象里的一个List<T>里面的子对象里。

比如这样， class.data.newType 就是这个类对象的结构，你可以按照你自己类的结构去拼这个字符串。

 

 

 

C#

 

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public override void OnInspectorGU()         {               NewType oldType = (NewType)EnumLabel.GetEnum(typeof(NewType),serializedObject,"class/data/newType");             NewType newType = (NewType)EnumLabel.DrawEnum(typeof(NewType),serializedObject,"class/data/newType");             if(oldType != newType)             {                 //类型发生改变             }         }

还有一种特殊的就是可能枚举在list<T>里，这样在绘制的时候是需要遍历的。

 

 

 

C#

 

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public override void OnInspectorGU()         {             SerializedProperty property = EnumLabel.GetPropety(serializedObject,"class/datas");             for(int i =0; i<  count; i++)             {                 SerializedProperty eProperty = property.GetArrayElementAtIndex(i);                 NewType newType = (NewType)EnumLabel.DrawEnum(typeof(NewType),serializedObject                             ,eProperty.FindPropertyRelative("newType"));             }         }

OK大功告成。

参考文章：

 https://github.com/anchan828/property-drawer-collection/blob/master/EnumLabel/EnumLabelAttribute.cs

http://forum.unity3d.com/threads/enum-inspector-sorting-attribute.357558/

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