CrowdControl/Assets/NaughtyAttributes/Scripts/Editor/PropertyDrawers/CurveRangePropertyDrawer.cs

using UnityEngine;
using UnityEditor;

namespace NaughtyAttributes.Editor
{
    [CustomPropertyDrawer(typeof(CurveRangeAttribute))]
    public class CurveRangePropertyDrawer : PropertyDrawerBase
    {
        protected override float GetPropertyHeight_Internal(SerializedProperty property, GUIContent label)
        {
            float propertyHeight = property.propertyType == SerializedPropertyType.AnimationCurve
                ? GetPropertyHeight(property)
                : GetPropertyHeight(property) + GetHelpBoxHeight();

            return propertyHeight;
        }

        protected override void OnGUI_Internal(Rect rect, SerializedProperty property, GUIContent label)
        {
            EditorGUI.BeginProperty(rect, label, property);

            // Check user error
            if (property.propertyType != SerializedPropertyType.AnimationCurve)
            {
                string message = string.Format("Field {0} is not an AnimationCurve", property.name);
                DrawDefaultPropertyAndHelpBox(rect, property, message, MessageType.Warning);
                return;
            }

            var curveRangeAttribute = (CurveRangeAttribute)attribute;
            var curveRanges = new Rect(
                curveRangeAttribute.Min.x,
                curveRangeAttribute.Min.y,
                curveRangeAttribute.Max.x - curveRangeAttribute.Min.x,
                curveRangeAttribute.Max.y - curveRangeAttribute.Min.y);

            EditorGUI.CurveField(
                rect,
                property,
                curveRangeAttribute.Color == EColor.Clear ? Color.green : curveRangeAttribute.Color.GetColor(),
                curveRanges,
                label);

            EditorGUI.EndProperty();
        }
    }
}