test/Assets/EditorAttributes/Runtime/Scripts/Attributes/GroupingAttributes/HorizontalGroupAttribute.cs

using UnityEngine;

namespace EditorAttributes
{
	/// <summary>
	/// Attribute to display specified fields horizontally
	/// </summary>
	public class HorizontalGroupAttribute : PropertyAttribute
	{
		public float WidthOffset { get; private set; }
		public float PropertySpace { get; private set; }
		public bool DrawInBox { get; private set; }

		public string[] FieldsToGroup { get; private set; }

		/// <summary>
		/// Attribute to display specified fields horizontally
		/// </summary>
		/// <param name="fieldsToGroup">The name of the fields to group</param>
		public HorizontalGroupAttribute(params string[] fieldsToGroup)
		{
			FieldsToGroup = fieldsToGroup;
			DrawInBox = false;
		}

		/// <summary>
		/// Attribute to display specified fields horizontally
		/// </summary>
		/// <param name="drawInBox">Draw the group in a nice box</param>
		/// <param name="fieldsToGroup">The name of the fields to group</param>
		public HorizontalGroupAttribute(bool drawInBox, params string[] fieldsToGroup)
		{
			FieldsToGroup = fieldsToGroup;
			DrawInBox = drawInBox;
		}

		/// <summary>
		/// Attribute to display specified fields horizontally
		/// </summary>
		/// <param name="widthOffset">By how much to offset the width of the properties in pixels</param>
		/// <param name="propertySpace">How much space in pixels is between the properties</param>
		/// <param name="drawInBox">Draw the group in a nice box</param>
		/// <param name="fieldsToGroup">The name of the fields to group</param>
		public HorizontalGroupAttribute(float widthOffset = 0f, float propertySpace = 0f, bool drawInBox = false, params string[] fieldsToGroup)
		{
			FieldsToGroup = fieldsToGroup;
			DrawInBox = drawInBox;
			WidthOffset = widthOffset;
			PropertySpace = propertySpace;
		}
	}
}