Unity editor expansion - window, sub window, menu, right-click menu (context menu)

summary

• This paper studies the knowledge necessary to create editor windows

Post code

using UnityEditor;
using UnityEngine;

namespace DC.DCIMGUIBox
{
    public class ChildWindowWindow : EditorWindow
    {
        [MenuItem("DC/IMGUI/ChildWindowWindow")]
        public static void Open()
        {
            var window = GetWindow<ChildWindowWindow>();
            window.minSize = new Vector2(400, 400);
        }

        Rect windowRect = new Rect(20, 20, 400, 50);

        Rect windowRect2 = new Rect(320, 120, 120, 50);

        void OnGUI()
        {
            BeginWindows();
            windowRect = GUILayout.Window(0, windowRect, ChildWindow, "CW1");

            windowRect2 = GUILayout.Window(1, windowRect2, ChildWindow, "CW2");
            EndWindows();
        }

        void ChildWindow(int windowID)
        {
            GUI.DragWindow(new Rect(0, 0, windowRect.width, 16));

            if (GUILayout.Button("Btn " + windowID))
            {
                Debug.Log(windowID);
            }
        }

    }
}

Set window properties

//  After creation, you can set the supported properties 
var window = GetWindow<ChildWindowWindow>();
window.minSize = new Vector2(400, 400);

child window

• Just adjust one api Pass it on like a similar OnGUI Function to draw sub windows
• Incoming window id And size , Draw in the callback function ui that will do , Get the controls you need
• You can encapsulate child windows as objects as needed , This size can also be adjusted , Otherwise, if the sub window is too small, it may not display all

void OnGUI()
{
    BeginWindows();
    windowRect = GUILayout.Window(0, windowRect, ChildWindow, "CW1");

    windowRect2 = GUILayout.Window(1, windowRect2, ChildWindow, "CW2");
    EndWindows();
}

void ChildWindow(int windowID)
{
    GUI.DragWindow(new Rect(0, 0, windowRect.width, 16));

    if (GUILayout.Button("Btn " + windowID))
    {
        Debug.Log(windowID);
    }
}

menu

//  So you can do it unity Create a path for the menu bar of DC/IMGUI/ChildWindowWindow Here's the menu 
[MenuItem("DC/IMGUI/ChildWindowWindow")]
public static void Open()
{
    var window = GetWindow<ChildWindowWindow>();
    window.minSize = new Vector2(400, 400);
}

Right-click menu ( Context menu )

• The right-click context menu is unity Subset of the right-click menu , It is shown that unity Right click menu or a group of menus in the right-click menu
• How to add items to the right-click menu

//  Similar to the menu , But with Assets start 
[MenuItem("Assets/DC/xxx")]

• Listen for right click events

Event evt = Event.current;
if (evt.type == EventType.ContextClick){
    ...
}

• Show the right-click menu

//  Key messages 2 individual , Location , Menu path 
EditorUtility.DisplayPopupMenu(new Rect(mousePos.x, mousePos.y, 0, 0), "Assets/DC", null);

• Complete code

using UnityEditor;
using UnityEngine;

namespace DC.DCIMGUIBox
{
    public class PopMenuWindow_01 : EditorWindow
    {
        [MenuItem("DC/IMGUI/PopMenuWindow_01")]
        public static void Open()
        {
            var window = GetWindow<PopMenuWindow_01>();
            window.minSize = new Vector2(800, 600);
        }

        int index = 0;
        string[] options = { "Rigidbody", "Box Collider", "Sphere Collider" };

        void OnGUI()
        {
            Event evt = Event.current;
            Rect contextRect = new Rect(10, 10, 100, 100);
            EditorGUI.DrawRect(contextRect, Color.blue);
            if (evt.type == EventType.ContextClick)
            {
                Vector2 mousePos = evt.mousePosition;
                if (contextRect.Contains(mousePos))
                {
                    EditorUtility.DisplayPopupMenu(new Rect(mousePos.x, mousePos.y, 0, 0), "Assets/DC", null);
                }
            }

            var areaRect = new Rect(0, 200, 200, 40);
            EditorGUI.DrawRect(areaRect, Color.blue);
            index = EditorGUI.Popup(areaRect, "Component:", index, options);

        }
    }
}