Unity Editor Window 拖拽调整区域大小

最新推荐文章于 2024-08-08 10:18:39 发布

CoderZ1010

最新推荐文章于 2024-08-08 10:18:39 发布

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分类专栏： Unity Editor # Unity Editor 编辑器基础文章标签： Unity Editor Rect 编辑器

本文链接：https://blog.csdn.net/qq_42139931/article/details/130128086

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该代码示例展示了如何在Unity3D中创建一个自定义的EditorWindow，包含可拖动的分割线，允许用户调整左右两个滚动视图的大小。用户可以按需调整左侧和右侧区域的显示空间。

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效果示意

Rect Drag

代码示例

using UnityEngine;
using UnityEditor;

public class ExampleEditorWindow : EditorWindow
{
    private Vector2 lScrollPosition, rScrollPosition;
    //分割线宽度
    private const float splitterWidth = 2f;
    //分割线位置
    private float splitterPos;
    private Rect splitterRect;
    //是否正在拖拽分割线
    private bool isDragging;

    [MenuItem("SKFramework/Example Editor Window")]
    public static void Open()
    {
        GetWindow<ExampleEditorWindow>().Show();
    }

    private void OnEnable()
    {
        splitterPos = position.width * .3f;
    }

    internal void OnGUI()
    {
        GUILayout.BeginHorizontal();
        {
            lScrollPosition = GUILayout.BeginScrollView(lScrollPosition, GUILayout.Width(splitterPos), GUILayout.MaxWidth(splitterPos), GUILayout.MinWidth(splitterPos));
            OnLeftGUI();
            GUILayout.EndScrollView();

            //分割线
            GUILayout.Box(string.Empty, GUILayout.Width(splitterWidth), GUILayout.MaxWidth(splitterWidth), GUILayout.MinWidth(splitterWidth), GUILayout.ExpandHeight(true));
            splitterRect = GUILayoutUtility.GetLastRect();

            rScrollPosition = GUILayout.BeginScrollView(rScrollPosition, GUILayout.ExpandWidth(true));
            OnRightGUI();
            GUILayout.EndScrollView();
        }
        GUILayout.EndHorizontal();

        if (Event.current != null)
        {
            //光标
            EditorGUIUtility.AddCursorRect(splitterRect, MouseCursor.ResizeHorizontal);
            switch (Event.current.rawType)
            {
                //开始拖拽分割线
                case EventType.MouseDown:
                    isDragging = splitterRect.Contains(Event.current.mousePosition);
                    break;
                case EventType.MouseDrag:
                    if (isDragging)
                    {
                        splitterPos += Event.current.delta.x;
                        //限制其最大最小值
                        splitterPos = Mathf.Clamp(splitterPos, position.width * .2f, position.width * .8f);
                        Repaint();
                    }
                    break;
                //结束拖拽分割线
                case EventType.MouseUp:
                    if (isDragging)
                        isDragging = false;
                    break;
            }
        }
    }
    private void OnLeftGUI()
    {
        GUILayout.Box("左侧区域", GUILayout.ExpandHeight(true), GUILayout.ExpandWidth(true));
    }

    private void OnRightGUI()
    {
        GUILayout.Box("右侧区域", GUILayout.ExpandHeight(true), GUILayout.ExpandWidth(true));
    }
}