Unity3D编辑器扩展（三）——使用GUI绘制窗口
前两篇分别讲解了创建菜单https://www.cnblogs.com/xiaoyulong/p/10115053.html和创建窗口https://www.cnblogs.com/xiaoyulong/p/10120565.html
这一篇我们讲解使用 GUI 来绘制我们的窗口，使窗口内容更丰富、美观
绘制窗口我们一般会使用下面四个类：GUI、GUILayout、EditorGUI、EditorGUILayout。
这四个类大同小异，基本上没什么差别，和我们经常使用的 UGUI 和 NGUI 相比，UGUI 和 NGUI 有图形化的操作，而这四个类是纯代码操作。
GUI、EditorGUI 和 GUILayout、EditorGUILayout 的区别是：前者是固定布局，布局需要我们写代码控制，后者是自动布局。
GUI、GUILayout 和 EditorGUI、EditorGUILayout 的区别是：前者更多的用在平常调试中，后者在编辑器中使用。前者也可以使用在编辑器中。
其他的也不多说了，全是一些 API 的使用，下面我就用 EditorGUI 和 EditorGUILayout 写个小例子，给大家看一下
代码：
1 using UnityEngine; 2 using UnityEditor; 3 4 public class EditorGUILayoutTest : EditorWindow 5 { 6 private Vector3 startPoint;//起点 7 private Vector3 endPoint;//终点 8 private float distance = 0f;//起点到终点的距离 9 10 private bool val; 11 private Color color = Color.red; 12 13 private AnimationCurve curveX = AnimationCurve.Linear(0, 0, 1, 0); 14 private AnimationCurve curveY = AnimationCurve.Linear(0, 0, 1, 1); 15 private AnimationCurve curveZ = AnimationCurve.Linear(0, 0, 1, 0); 16 17 private int sliderValue = 1; 18 private bool showClose = true; 19 private bool showToggleLeft = true; 20 private string textfieldtest = "textfieldtest"; 21 private string password = "pwd123456"; 22 23 private float minVal = -10.0f; 24 private float minLimit = -20.0f; 25 private float maxVal = 10.0f; 26 private float maxLimit = 20.0f; 27 28 [MenuItem("MyWindow/WindowTest")] 29 private static void Init() 30 { 31 EditorGUILayoutTest window = (EditorGUILayoutTest)EditorWindow.GetWindow(typeof(EditorGUILayoutTest)); 32 window.Show(); 33 } 34 35 private void OnGUI() 36 { 37 //Vector3类型数据的显示 38 startPoint = EditorGUILayout.Vector3Field("Start Point:", startPoint); 39 endPoint = EditorGUILayout.Vector3Field("End Point:", endPoint); 40 //只读的标签 41 EditorGUILayout.LabelField("Distance:", Vector3.Distance(startPoint, endPoint).ToString("f2")); 42 //勾选框 43 val = EditorGUILayout.Toggle("Can Jump", val); 44 //是否开启禁用功能。false表示禁用关闭，true表示开启禁用--灰色状态 45 EditorGUI.BeginDisabledGroup(val);// 46 //float类型文本Text 47 EditorGUILayout.FloatField("跳跃高度：", 100.0f); 48 //结束禁用 49 EditorGUI.EndDisabledGroup(); 50 EditorGUILayout.FloatField("跳跃频率：", 1.85f); 51 //Bounds输入框 52 EditorGUILayout.BoundsField("BoundsField", new Bounds(new Vector3(50, 50, 50), new Vector3(150, 150, 150))); 53 //颜色选择框 54 color = EditorGUILayout.ColorField("颜色:", color); 55 //按钮 56 if (GUILayout.Button("Close")) 57 { 58 this.Close(); 59 } 60 //带有阴影的Label 61 EditorGUI.DropShadowLabel(new Rect(0, 250, position.width, 20), "带有阴影的Label"); 62 //动画曲线 63 curveX = EditorGUI.CurveField(new Rect(3, 320, position.width - 6, 50), "Animation on X", curveX); 64 curveY = EditorGUI.CurveField(new Rect(3, 370, position.width - 6, 50), "Animation on Y", curveY); 65 curveZ = EditorGUI.CurveField(new Rect(3, 420, position.width - 6, 50), "Animation on Z", curveZ); 66 //数字输入 67 EditorGUI.DelayedDoubleField(new Rect(3, 480, position.width - 6, 20), "DelayedDoubleField1", 25.0); 68 EditorGUI.DelayedFloatField(new Rect(3, 500, position.width - 6, 20), "DelayedFloatField", 25.0f); 69 EditorGUI.DelayedIntField(new Rect(3, 520, position.width - 6, 20), "DelayedIntField", 25); 70 EditorGUI.DelayedTextField(new Rect(3, 540, position.width - 6, 20), "DelayedTextField"); 71 //绘画矩形 72 EditorGUI.DrawRect(new Rect(3, 570, position.width - 60, 20), Color.green); 73 //滑动条。输入框(值不能滑动): 注意左边必须要有值接收这个值，否则不能滑动 74 sliderValue = EditorGUI.IntSlider(new Rect(3, 600, position.width - 60, 30), sliderValue, 0, 100); 75 //帮助盒子信息框 76 EditorGUI.HelpBox(new Rect(3, 645, position.width - 60, 40), "HelpBox帮助盒子", MessageType.Info); 77 //Toggle 开关 78 showClose = EditorGUI.Toggle(new Rect(3, 685, position.width - 60, 20), "Toggle", showClose); 79 showToggleLeft = EditorGUI.ToggleLeft(new Rect(3, 710, position.width - 60, 20), "ToggleLeft", showToggleLeft); 80 textfieldtest = EditorGUI.TextField(new Rect(3, 735, position.width - 60, 20), "TextField", textfieldtest); 81 password = EditorGUI.PasswordField(new Rect(3, 760, position.width - 60, 20), "密码框:", password); 82 //最大值和最小值滑块 83 EditorGUI.MinMaxSlider(new Rect(3, 790, position.width - 60, 20), ref minVal, ref maxVal, minLimit, maxLimit); 84 } 85 86 private void OnInspectorUpdate() 87 { 88 this.Repaint(); 89 } 90 }
效果图：
