拓展編輯器 7 - 自定義窗口 EditorWindow

開發者可以通過派生 EditorWindows 繪製完全自定義的窗口。

使用 EditorWindow.GetWindow()來打開窗口，在OnGUI中進行繪製。

通過實現 IHasCustomMenu 來添加菜單

可以在我們的窗口中繪製選中對象的預覽，就像 Inspector 的 Preview 子窗口

例子：

using UnityEngine;
using UnityEditor;

/// <summary>
/// 自定義窗口
/// </summary>
public class CustomEditorWindow : EditorWindow, IHasCustomMenu
{
    [MenuItem("X/CustomWindow")]
    static void ShowWindow()
    {
        CustomEditorWindow wnd = EditorWindow.GetWindow<CustomEditorWindow>();
        wnd.Show();
    }

    /// <summary>
    /// 擴展窗口右上角下拉菜單
    /// </summary>
    /// <param name="menu"></param>
    void IHasCustomMenu.AddItemsToMenu(GenericMenu menu)
    {
        menu.AddDisabledItem(new GUIContent("Disabled"));
        menu.AddItem(new GUIContent("Test1"), true, () => { Debug.Log("click Test1"); });
        menu.AddItem(new GUIContent("Test2"), false, () => { Debug.Log("click Test2"); });
        menu.AddSeparator("Test/");
        menu.AddItem(new GUIContent("Test/Test3"), true, () => { Debug.Log("click Test3"); });
    }

    private Texture _Texture;
    private float _FloatValue;

    private Editor mEditor;
    private GameObject go;

    private void Awake()
    {
        Debug.Log("初始化調用");
        _Texture = AssetDatabase.LoadAssetAtPath<Texture>("Assets/unity.png");
    }

    /// <summary>
    /// 繪製窗口
    /// </summary>
    private void OnGUI()
    {
        GUILayout.Label("XXXXXX", EditorStyles.boldLabel);
        _FloatValue = EditorGUILayout.Slider(_FloatValue, 0, 100);
        if (_Texture != null)
            GUI.DrawTexture(new Rect(0, 30, 100, 100), _Texture);
            
        // 繪製 GameObject 的預覽
        if(Selection.activeGameObject)
        {
            if (Selection.activeGameObject != go)
            {
                Editor.DestroyImmediate(mEditor);
                mEditor = null;
            }
            if (mEditor == null)
                mEditor = Editor.CreateEditor(Selection.activeGameObject);
            mEditor.OnPreviewGUI(GUILayoutUtility.GetRect(500, 500), GUIStyle.none);
        }
    }

    private void OnDestroy()
    {
        Debug.Log("銷燬時調用");
    }

    private void OnFocus()
    {
        Debug.Log("獲得焦點");
    }

    private void OnLostFocus()
    {
        Debug.Log("失去焦點");
    }

    private void OnInspectorUpdate()
    {
        //Debug.Log("Inspector 每幀更新");
    }

    private void OnHierarchyChange()
    {
        Debug.Log("Hierarchy 視圖改變時調用");
    }

    private void OnProjectChange()
    {
        Debug.Log("Project 視圖改變時調用");
    }

    private void OnSelectionChange()
    {
        Debug.Log("Project or Hierarchy 視圖選擇對象時調用");
    }

    private void Update()
    {
        //Debug.Log("每幀更新");
    }
}