第四章自定义编辑器窗口_创建and打开and自定义窗口（3/11）

前言

书本里的这章节主要介绍了自定义窗口，涉及到EditorWindow,PopupWindow,GenericMenus和ScriptsWizard类。还介绍了扩展默认窗口

下面是对他们的一些比较介绍

4.1 如何创建新的编辑器窗口

Unity 的使用是在不同的编辑器窗口中进行的，例如Scene、Game、Project、HierarchyInspector、Console 等，除了这些默认的编辑器窗口，开发者可以创建新的编辑器窗口并定义其中的内容，创建的新的编辑器窗口类需要继承EditorWindow。（这是原文）

4.1.1 打开新创建的编辑器窗口

打开编辑器窗口需要一个菜单路径，例如打开控制台窗口的菜单路径为WindGenera/Console，所以首先要为新创建的编辑器窗口使用Menultem 提供一个窗口入口。调用 EditorWindow 类中的静态方法 GetWindowO可以获取指定类型的窗口实例。

using UnityEngine;
using UnityEditor;public class MyEditorWindow : EditorWindow
{[MenuItem("Example/My Editor Window")]public static void ShowWindow(){// 创建或显示编辑器窗口MyEditorWindow window = GetWindow<MyEditorWindow>("窗口标题");window.minSize = new Vector2(300, 200); // 设置最小窗口大小window.maxSize = new Vector2(1920, 1080); // 设置最大窗口大小window.Show();}
}

4.1.2 定义编辑器窗口中的GUI内容

using UnityEditor;
using UnityEngine;/// <summary>
/// 这个脚本演示了如何在编辑器窗口中使用OnGUI方法绘制UI控件  
/// </summary>
public class MyEditorWindow_CustomOnGUI : EditorWindow
{[MenuItem("Example/Show Editor Window CustomeOnGUI")]public static void ShowWindow(){// 创建或显示编辑器窗口MyEditorWindow_CustomOnGUI window = GetWindow<MyEditorWindow_CustomOnGUI>("使用OnGUI绘制UI控件");window.minSize = new Vector2(300, 300); // 设置最小窗口大小window.maxSize = new Vector2(1920, 1080); // 设置最大窗口大小window.Show();}private void OnGUI(){GUILayout.Button("按钮");}private void OnFocus(){Debug.Log("OnFocus");}private void OnLostFocus(){Debug.Log("OnLostFocus");}private void OnHierarchyChange(){Debug.Log("OnHierarchyChang");}private void OnInspectorUpdate(){Debug.Log("OnInspecotrUpdate");}private void OnProjectChange(){Debug.Log("OnProjectChang");}private void OnSelectionChange(){Debug.Log("OnSelectionChang");}private void OnValidate(){Debug.Log("OnValidate");}private void OnDisable(){Debug.Log("OnDisable");}private void OnDestroy(){Debug.Log("OnDestroy");}
}

4.1.3 如何创建弹出窗口

1. PopupWindow
   PopupWindow 弹出窗口不可以被拖动，也无法调节大小，并且还会在失去焦点时自动关闭。打开弹出窗口需要调用 PopupWindow中的静态方法Show，代码如下:

using System.Collections;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;public class MyEditorWindow_PopupWindow : EditorWindow
{[MenuItem("Example/MyEditorWindow_PopupWindow")]public static void Open(){MyEditorWindow_PopupWindow window = GetWindow<MyEditorWindow_PopupWindow>();window.titleContent = new GUIContent("窗口标题");window.minSize = new Vector2(300f, 300f);window.maxSize = new Vector2(1920f, 1080f);window.Show();}private Rect examplePopuWindowRect;private void OnGUI(){// 绘制一个按钮，点击后弹出窗口if (GUILayout.Button("打开弹出窗口")){PopupWindow.Show(new Rect(100, 100, 200, 200),new ExamplePopupWindowContent(new Vector2(position.width -6f,100f)));}if (Event.current.type == EventType.Repaint){examplePopuWindowRect = GUILayoutUtility.GetLastRect();}}
}public class ExamplePopupWindowContent : PopupWindowContent
{//窗口尺寸private Vector2 windowSize;//滚动值private Vector2 scroll;public ExamplePopupWindowContent(Vector2 windowSize){this.windowSize = windowSize;}public override Vector2 GetWindowSize(){return new Vector2(200f, 200f);}public override void OnGUI(Rect rect){// 在弹出窗口中绘制内容GUILayout.Label("这是一个弹出窗口");if (GUILayout.Button("关闭")){editorWindow.Close();}}public override void OnOpen(){base.OnOpen();Debug.Log("弹出窗口已打开");}public override void OnClose(){base.OnClose();Debug.Log("弹出窗口已关闭");}   
}

效果

2. GenericMenu
   使用 GencricMcnu 同样可以创建一个弹出窗口，与 PopupWindow 的区别在于，以在弹出窗口内开启水平或垂直布局，创建各类型的交互控件，还可以灵活地绘制编素、而前者弹出的窗口只是一个下拉菜单，它包含的公共方法。

using UnityEditor;
using UnityEngine;public class MyEditorWindow_PopupWindow_GerericMenu : EditorWindow
{[MenuItem("Example/MyEditorWindow_PopupWindow_GerericMenu")]public static void Open(){MyEditorWindow_PopupWindow_GerericMenu window = GetWindow<MyEditorWindow_PopupWindow_GerericMenu>();window.titleContent = new GUIContent("窗口标题");window.minSize = new Vector2(300f, 300f);window.maxSize = new Vector2(1920f, 1080f);window.Show();}private Rect examplePopuWindowRect;private void OnGUI(){// 绘制一个按钮，点击后弹出窗口if (GUILayout.Button("打开弹出窗口")){PopupWindow.Show(new Rect(100, 100, 200, 200),new ExamplePopupWindowContent(new Vector2(position.width - 6f, 100f)));}if (Event.current.type == EventType.Repaint){examplePopuWindowRect = GUILayoutUtility.GetLastRect();}if (GUILayout.Button("Button")){GenericMenu gm = new GenericMenu();//添加菜单项gm.AddItem(new GUIContent("菜单项1"), false, () => Debug.Log("菜单项1被点击"));//添加分隔符 参数传空字符串表示在一级菜单中添加分隔符gm.AddSeparator(string.Empty);//添加不可交互菜单项gm.AddDisabledItem(new GUIContent("Memu2"));//通过'/'可添加子菜单项gm.AddItem(new GUIContent("Menu3/SubMenu1"), false,() => Debug.Log("Select SubMenu1"));//在子菜单中添加分隔符gm.AddSeparator("Menu3/");gm.AddItem(new GUIContent("Menu3/SubMenu2"), false,() => Debug.Log("Select SubMenu2"));//显示菜单gm.ShowAsContext();}}
}public class ExamplePopupWindowContent_1 : PopupWindowContent
{//窗口尺寸private Vector2 windowSize;//滚动值private Vector2 scroll;public ExamplePopupWindowContent_1(Vector2 windowSize){this.windowSize = windowSize;}public override Vector2 GetWindowSize(){return new Vector2(200f, 200f);}public override void OnGUI(Rect rect){// 在弹出窗口中绘制内容GUILayout.Label("这是一个弹出窗口");if (GUILayout.Button("关闭")){editorWindow.Close();}}public override void OnOpen(){base.OnOpen();Debug.Log("弹出窗口已打开");}public override void OnClose(){base.OnClose();Debug.Log("弹出窗口已关闭");}
}

效果