EditorGUILayout.BeginFoldoutHeaderGroup

参数

返回

bool 用户选择的折叠状态。如果为 true，则应渲染子对象。

描述

创建一个左侧带有折叠箭头的标签。

这适用于文件夹之类的结构，其中子对象仅在展开父项时显示。此控件不能嵌套在其他 BeginFoldoutHeaderGroup 中。要使用多个折叠，每个方法都必须以 EndFoldoutHeaderGroup 结尾。


创建可隐藏或显示所选变换的可折叠标题菜单。

// Create a foldable header menu that hides or shows the selected Transform position.
// If you have not selected a Transform, the Foldout item stays folded until
// you select a Transform.

using UnityEditor;
using UnityEngine;

public class FoldoutHeaderUsage : EditorWindow
{
    bool showPosition = true;
    string status = "Select a GameObject";

    [MenuItem("Examples/Foldout Header Usage")]
    static void CreateWindow()
    {
        GetWindow<FoldoutHeaderUsage>();
    }

    public void OnGUI()
    {
        showPosition = EditorGUILayout.BeginFoldoutHeaderGroup(showPosition, status);

        if (showPosition)
            if (Selection.activeTransform)
            {
                Selection.activeTransform.position =
                    EditorGUILayout.Vector3Field("Position", Selection.activeTransform.position);
                status = Selection.activeTransform.name;
            }

        if (!Selection.activeTransform)
        {
            status = "Select a GameObject";
            showPosition = false;
        }
        // End the Foldout Header that we began above.
        EditorGUILayout.EndFoldoutHeaderGroup();
    }
}

创建可在单击时将所选对象移到 0,0,0 的菜单项操作。

// Create a foldable header menu that hides or shows the selected Transform position.
// If you have not selected a Transform, the Foldout item stays folded until
// you select a Transform.

using UnityEditor;
using UnityEngine;

public class FoldoutHeaderUsage : EditorWindow
{
    bool showPosition = true;
    string status = "Select a GameObject";

    [MenuItem("Examples/Foldout Header Usage")]
    static void CreateWindow()
    {
        GetWindow<FoldoutHeaderUsage>();
    }

    public void OnGUI()
    {
        showPosition = EditorGUILayout.BeginFoldoutHeaderGroup(showPosition, status, null, ShowHeaderContextMenu);

        if (showPosition)
            if (Selection.activeTransform)
            {
                Selection.activeTransform.position =
                    EditorGUILayout.Vector3Field("Position", Selection.activeTransform.position);
                status = Selection.activeTransform.name;
            }

        if (!Selection.activeTransform)
        {
            status = "Select a GameObject";
            showPosition = false;
        }
        // End the Foldout Header that we began above.
        EditorGUILayout.EndFoldoutHeaderGroup();
    }

    void ShowHeaderContextMenu(Rect position)
    {
        var menu = new GenericMenu();
        menu.AddItem(new GUIContent("Move to (0,0,0)"), false, OnItemClicked);
        menu.DropDown(position);
    }

    void OnItemClicked()
    {
        Undo.RecordObject(Selection.activeTransform, "Moving to center of world");
        Selection.activeTransform.position = Vector3.zero;
    }
}