【Unity】编辑器扩展-03-拓展Inspector视图

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拓展原生组件

CustomEditor()表示自定义哪个组件，OnInspectorGUI()可以对该组件元素进行绘制，base.OnInspectorGUI()表示绘制父类原有元素

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

[CustomEditor(typeof(Camera))]
public class Script_08 : Editor
{
    public override void OnInspectorGUI()
    {
        base.OnInspectorGUI();
        if (GUILayout.Button("click"))
        {
            Debug.Log("click");
        }
    }
}

拓展继承组件

如果按照之前的方式直接拓展，则会导致Inspector界面绘制发生变化，但我们希望拓展面板后仍然保持原有绘制方式。

Unity将大量的Editor绘制方法封装在内部的DLL文件中，开发者无法调用。

因此我们需要使用C#反射的方式调用内部未公开的方法

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
using System.Reflection;

[CustomEditor(typeof(Transform))]
public class Script_09 : Editor
{
    private Editor m_Editor;
    void OnEnable()
    {
        m_Editor = Editor.CreateEditor(target,Assembly.GetAssembly(typeof(Editor)).GetType("UnityEditor.TransformInspector",true));
    }
    public override void OnInspectorGUI()
    {
        m_Editor.OnInspectorGUI();
        if (GUILayout.Button("click"))
        {

        }
    }
}

组件不可编辑

[CustomEditor(typeof(Transform))]
public class Script_09 : Editor
{
    private Editor m_Editor;
    void OnEnable()
    {
        m_Editor = Editor.CreateEditor(target,Assembly.GetAssembly(typeof(Editor)).GetType("UnityEditor.TransformInspector",true));
    }
    public override void OnInspectorGUI()
    {
        GUI.enabled = false;
        m_Editor.OnInspectorGUI();
        GUI.enabled = true;
        if (GUILayout.Button("click"))
        {

        }
    }
}

自定义锁功能菜单

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

public class Script_10 : MonoBehaviour
{
    [MenuItem("GameObject/3D Object/Lock/Lock",false,0)]
    static void Lock()
    {
        if (Selection.gameObjects != null)
        {
            foreach (var gameObject in Selection.gameObjects)
            {
                gameObject.hideFlags = HideFlags.NotEditable;
            }
        }
    }

    [MenuItem("GameObject/3D Object/Lock/UnLock", false, 0)]
    static void UnLock()
    {
        if (Selection.gameObjects != null)
        {
            foreach (var gameObject in Selection.gameObjects)
            {
                gameObject.hideFlags = HideFlags.None;
            }
        }
    }
}

HideFlags（它可以使用位运算）

• HideFlags.None; 清楚状态
• HideFlags.DontSave;设置对象不会被保存（仅编辑模式下）
• HideFlags.DontSaveInBuild;设置对象构建后不会被保存
• HideFlags.DontSaveInEditor;设置对象编辑模式下不会被保存
• HideFlags.DontUnloadUnusedAsset;设置对象不会被Resources.UnloadUnusedAssets()卸载无用资源时卸掉
• HideFlags.HideAndDontSave;设置对象隐藏，并且不会被保存
• HideFlags.HideInHierarchy;设置对象在层次视图中隐藏
• HideFlags.HideInInspector;设置对象在控制面板视图中隐藏
• HideFlags.NotEditable;设置对象不可被编辑

Context菜单

前缀菜单
CONTEXT

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

public class Script_11
{
    [MenuItem("CONTEXT/Transform/new Context 1")]
    public static void NewContext1(MenuCommand menuCommand)
    {
        Debug.Log(menuCommand.context.name);
    }
}

我们还可可以通过context来访问脚本本身。

此外，通过宏定义标签UNITY_EDITOR表示这段代码只会在Editor模式下执行，发布后将会被剔除

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
#endif

public class Script_11 : MonoBehaviour
{
    string number;
#if UNITY_EDITOR
    [MenuItem("CONTEXT/Script_11/new Context 1")]
    public static void NewContext1(MenuCommand menuCommand)
    {
        //访问脚本变量
        Script_11 script_11 = menuCommand.context as Script_11;
        script_11.number = "10";
        Debug.Log(menuCommand.context.name);
    }
#endif
}