用PropertyDrawer自定义Inspector面板显示外观

用PropertyDrawer自定义Inspector面板显示外观

2019年02月13日 11:53:25 萧_然 阅读数：22更多

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举栗如图，将数组以二维矩阵的方式显示到Inspector面板

1. using UnityEngine;

2. using UnityEditor;

3.  

4. [System.Serializable]

5. public class InspectorGrid

6. {

7. public int rows;

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8. public int columns;

9.  

10. [SerializeField]

11. bool[] enabledBools;

12. }

13.  

14. // ------

15.  

16. //用PropertyDrawer自定义Inspector面板显示外观

17. [CustomPropertyDrawer(typeof(InspectorGrid))]

18. public class InspectorGridDrawer : PropertyDrawer

19. {

20. float gridWidth = 15f;

21. float gridHeight = 15f;

22. float gridSpace = 1f;

23.  

24. int rows;

25. int columns;

26.  

27. //自定义面板显示

28. public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)

29. {

30. //position: 在Inspector面板的位置、大小

31. //property: 待绘制的属性

32. //label: 值的字段名

33.  

34. //绘制一个SerializedProperty的属性字段

35. EditorGUI.PropertyField(position, property, label, true);

36.  

37. //获取属性信息

38. SerializedProperty data = property.FindPropertyRelative("enabledBools");

39. rows = property.FindPropertyRelative("rows").intValue;

40. columns = property.FindPropertyRelative("columns").intValue;

41.  

42. if (rows < 0)

43. rows = 0;

44.  

45. if (columns < 0)

46. columns = 0;

47.  

48. //指定数组大小

49. data.arraySize = rows * columns;

50.  

51. //自定义显示区域

52. if (property.isExpanded)

53. {

54. int count = 0;

55. float targetX;

56. float targetY;

57.  

58. //遍历

59. for (int r = 0; r < rows; r++)

60. {

61. for (int c = 0; c < columns; c++)

62. {

63. //计算位置

64. targetX = position.xMin + ((gridWidth + gridSpace) * (c + 1));

65. targetY = 60 + position.yMin + (gridHeight + gridSpace) * (r + 1);

66. //位置、大小

67. Rect rect = new Rect(targetX, targetY, 15f * (EditorGUI.indentLevel + 1), gridHeight);

68. //绘制属性值

69. EditorGUI.PropertyField(rect, data.GetArrayElementAtIndex(count), GUIContent.none);

70.  

71. count++;

72. }

73. }

74. }

75. }

76.  

77. //自定义高度

78. public override float GetPropertyHeight(SerializedProperty property, GUIContent label)

79. {

80. //按照行数增加高度

81. if (property.isExpanded)

82. return EditorGUI.GetPropertyHeight(property) + 20 + (15 * (rows + 1));

83.  

84. return EditorGUI.GetPropertyHeight(property);

85. }

86.  

87. }

// 测试，Inspector面板显示如上图

1. using UnityEngine;

2.  

3. public class Test : MonoBehaviour

4. {

5. [SerializeField] InspectorGrid grid;

6.  

7. }