[Unity优化]UI优化(一)：11

参考链接：

http://www.manew.com/thread-100366-1-1.html

https://www.jianshu.com/p/3082ebf8a342

 https://blog.csdn.net/serenahaven/article/details/80972601

1.RaycastTarget的检测

 1 using UnityEngine;
 2 using UnityEngine.UI;
 3 
 4 public class DrawRaycastTarget : MonoBehaviour {
 5 
 6     Vector3[] worldCorners = new Vector3[4];
 7 
 8     private void OnDrawGizmos()
 9     {
10         foreach (MaskableGraphic maskableGraphic in FindObjectsOfType<MaskableGraphic>())
11         {
12             if (maskableGraphic.raycastTarget)
13             {
14                 RectTransform rectTransform = maskableGraphic.transform as RectTransform;
15                 rectTransform.GetWorldCorners(worldCorners);
16                 Gizmos.color = Color.red;
17                 for (int i = 0; i < 4; i++)
18                 {
19                     Gizmos.DrawLine(worldCorners[i], worldCorners[(i + 1) % 4]);
20                 }
21             }
22         }
23     }
24 }

 效果如下：

2.批量修改RaycastTarget

  1 using UnityEditor;
  2 using UnityEngine.UI;
  3 using UnityEngine;
  4 
  5 public class RaycastTargetChecker : EditorWindow
  6 {
  7     private MaskableGraphic[] graphics;
  8     private bool hideUnchecked = false;
  9     private bool showBorders = true;
 10     private Color borderColor = Color.blue;
 11     private Vector2 scrollPosition = Vector2.zero;
 12 
 13     private static RaycastTargetChecker instance = null;
 14 
 15     [MenuItem("Tools/RaycastTarget Checker")]
 16     private static void Open()
 17     {
 18         instance = instance ?? EditorWindow.GetWindow<RaycastTargetChecker>("RaycastTargets");
 19         instance.Show();
 20     }
 21 
 22     void OnEnable()
 23     {
 24         instance = this;
 25     }
 26 
 27     void OnDisable()
 28     {
 29         instance = null;
 30     }
 31 
 32     void OnGUI()
 33     {
 34         using (EditorGUILayout.HorizontalScope horizontalScope = new EditorGUILayout.HorizontalScope())
 35         {
 36             showBorders = EditorGUILayout.Toggle("Show Gizmos", showBorders, GUILayout.Width(200.0f));
 37             borderColor = EditorGUILayout.ColorField(borderColor);
 38         }
 39         hideUnchecked = EditorGUILayout.Toggle("Hide Unchecked", hideUnchecked);
 40 
 41         GUILayout.Space(12.0f);
 42         Rect rect = GUILayoutUtility.GetLastRect();
 43         GUI.color = new Color(0.0f, 0.0f, 0.0f, 0.25f);
 44         GUI.DrawTexture(new Rect(0.0f, rect.yMin + 6.0f, Screen.width, 4.0f), EditorGUIUtility.whiteTexture);
 45         GUI.DrawTexture(new Rect(0.0f, rect.yMin + 6.0f, Screen.width, 1.0f), EditorGUIUtility.whiteTexture);
 46         GUI.DrawTexture(new Rect(0.0f, rect.yMin + 9.0f, Screen.width, 1.0f), EditorGUIUtility.whiteTexture);
 47         GUI.color = Color.white;
 48 
 49         graphics = GameObject.FindObjectsOfType<MaskableGraphic>();
 50 
 51         using (GUILayout.ScrollViewScope scrollViewScope = new GUILayout.ScrollViewScope(scrollPosition))
 52         {
 53             scrollPosition = scrollViewScope.scrollPosition;
 54             for (int i = 0; i < graphics.Length; i++)
 55             {
 56                 MaskableGraphic graphic = graphics[i];
 57                 if (hideUnchecked == false || graphic.raycastTarget == true)
 58                 {
 59                     DrawElement(graphic);
 60                 }
 61             }
 62         }
 63         foreach (var item in graphics)
 64         {
 65             EditorUtility.SetDirty(item);
 66         }
 67         Repaint();
 68     }
 69 
 70     private void DrawElement(MaskableGraphic graphic)
 71     {
 72         using (EditorGUILayout.HorizontalScope horizontalScope = new EditorGUILayout.HorizontalScope())
 73         {
 74             Undo.RecordObject(graphic, "Modify RaycastTarget");
 75             graphic.raycastTarget = EditorGUILayout.Toggle(graphic.raycastTarget, GUILayout.Width(20));
 76             EditorGUI.BeginDisabledGroup(true);
 77             EditorGUILayout.ObjectField(graphic, typeof(MaskableGraphic), true);
 78             EditorGUI.EndDisabledGroup();
 79         }
 80     }
 81 
 82     [DrawGizmo(GizmoType.Selected | GizmoType.NonSelected)]
 83     private static void DrawGizmos(MaskableGraphic source, GizmoType gizmoType)
 84     {
 85         if (instance != null && instance.showBorders == true && source.raycastTarget == true)
 86         {
 87             Vector3[] corners = new Vector3[4];
 88             source.rectTransform.GetWorldCorners(corners);
 89             Gizmos.color = instance.borderColor;
 90             for (int i = 0; i < 4; i++)
 91             {
 92                 Gizmos.DrawLine(corners[i], corners[(i + 1) % 4]);
 93             }
 94             if (Selection.activeGameObject == source.gameObject)
 95             {
 96                 Gizmos.DrawLine(corners[0], corners[2]);
 97                 Gizmos.DrawLine(corners[1], corners[3]);
 98             }
 99         }
100         SceneView.RepaintAll();
101     }
102 }

效果如下：

3.创建UI控件时自动取消RaycastTarget

 1 using UnityEngine;
 2 using UnityEditor;
 3 using UnityEngine.UI;
 4 
 5 public class CancelRaycastTarget {
 6 
 7     [MenuItem("GameObject/UI/Image")]
 8     static void CreatImage()
 9     {
10         if (Selection.activeTransform)
11         {
12             if (Selection.activeTransform.GetComponentInParent<Canvas>())
13             {
14                 GameObject go = new GameObject("Image", typeof(Image));
15                 go.GetComponent<Image>().raycastTarget = false;
16                 go.transform.SetParent(Selection.activeTransform);
17             }
18         }
19     }
20 
21     [MenuItem("GameObject/UI/Text")]
22     static void CreatText()
23     {
24         if (Selection.activeTransform)
25         {
26             if (Selection.activeTransform.GetComponentInParent<Canvas>())
27             {
28                 GameObject go = new GameObject("Text", typeof(Text));  
29                 go.GetComponent<Text>().raycastTarget = false;  
30                 go.transform.SetParent(Selection.activeTransform);
31             }
32         }
33     }
34   
35     [MenuItem("GameObject/UI/Raw Image")]
36     static void CreatRawImage()
37     {
38         if (Selection.activeTransform)
39         {
40             if (Selection.activeTransform.GetComponentInParent<Canvas>())
41             { 
42                 GameObject go = new GameObject("RawImage", typeof(RawImage)); 
43                 go.GetComponent<RawImage>().raycastTarget = false;
44                 go.transform.SetParent(Selection.activeTransform);
45             }
46         }
47     }
48 }