Unity编辑器中分割线拖拽的实现

最新推荐文章于 2025-03-30 19:17:21 发布

转载最新推荐文章于 2025-03-30 19:17:21 发布 · 1.2k 阅读

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CC 4.0 BY-SA版权

原文链接：https://www.cnblogs.com/AaronBlogs/p/8985342.html

本文介绍了一个Unity编辑器窗口的自定义GUI组件——GUISplitter，它允许用户通过拖动来调整两个视图之间的分割位置。组件使用了GUILayout进行布局，并监听鼠标事件以实现拖动效果。

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using UnityEngine;
using UnityEditor;

public class GUISplitter : EditorWindow {
Vector2 posLeft;
Vector2 posRight;
GUIStyle styleLeftView;
GUIStyle styleRightView;
float splitterPos;
Rect splitterRect;
Vector2 dragStartPos;
bool dragging;
float splitterWidth = 5;

// Add menu named "My Window" to the Window menu
[MenuItem ("GUI/GUISplitter")]
static void Init () {
GUISplitter window = (GUISplitter)EditorWindow.GetWindow (
typeof (GUISplitter));
window.position = new Rect(200, 200, 200,200);
window.splitterPos = 100;
}

void OnGUI (){
if (styleLeftView == null)
styleLeftView = new GUIStyle(GUI.skin.box);
if (styleRightView == null)
styleRightView = new GUIStyle(GUI.skin.button);

GUILayout.BeginHorizontal ();

// Left view
posLeft = GUILayout.BeginScrollView (posLeft,
GUILayout.Width (splitterPos),
GUILayout.MaxWidth(splitterPos),
GUILayout.MinWidth(splitterPos));
GUILayout.Box ("Left View",
styleLeftView,
GUILayout.ExpandWidth(true),
GUILayout.ExpandHeight(true));
GUILayout.EndScrollView ();

// Splitter
GUILayout.Box ("",
GUILayout.Width(splitterWidth),
GUILayout.MaxWidth (splitterWidth),
GUILayout.MinWidth(splitterWidth),
GUILayout.ExpandHeight(true));
splitterRect = GUILayoutUtility.GetLastRect ();

// Right view
posRight = GUILayout.BeginScrollView (posRight,
GUILayout.ExpandWidth(true));
GUILayout.Box ("Right View",
styleRightView,
GUILayout.ExpandWidth(true),
GUILayout.ExpandHeight(true));
GUILayout.EndScrollView ();

GUILayout.EndHorizontal ();

// Splitter events
if (Event.current != null) {
switch (Event.current.rawType) {
case EventType.MouseDown:
if (splitterRect.Contains (Event.current.mousePosition)) {
Debug.Log ("Start dragging");
dragging = true;
}
break;
case EventType.MouseDrag:
if (dragging){
Debug.Log ("moving splitter");
splitterPos += Event.current.delta.x;
Repaint ();
}
break;
case EventType.MouseUp:
if (dragging){
Debug.Log ("Done dragging");
dragging = false;
}
break;
}
}
}
}