/******************************************************************************
 * Copyright (C) Ultraleap, Inc. 2011-2021.                                   *
 *                                                                            *
 * Use subject to the terms of the Apache License 2.0 available at            *
 * http://www.apache.org/licenses/LICENSE-2.0, or another agreement           *
 * between Ultraleap and you, your company or other organization.             *
 ******************************************************************************/

using System.Collections.Generic;
#if UNITY_EDITOR
using UnityEditor;
#endif
using UnityEngine;

namespace Leap.Unity.Attributes
{

    /// <summary>
    /// You can use this attribute to mark that an AnimationCurve can only have
    /// values that fall within specific bounds.  The user will be prevented from
    /// entering a curve that lies outside of these bounds.
    /// </summary>
    public class CurveBoundsAttribute : CombinablePropertyAttribute, IFullPropertyDrawer
    {
        public readonly Rect bounds;

        public CurveBoundsAttribute(Rect bounds)
        {
            this.bounds = bounds;
        }

        public CurveBoundsAttribute(float width, float height)
        {
            bounds = new Rect(0, 0, width, height);
        }

#if UNITY_EDITOR
        public void DrawProperty(Rect rect, SerializedProperty property, GUIContent label)
        {
            EditorGUI.CurveField(rect, property, Color.green, bounds);
        }

        public override IEnumerable<SerializedPropertyType> SupportedTypes
        {
            get
            {
                yield return SerializedPropertyType.AnimationCurve;
            }
        }
#endif
    }

    /// <summary>
    /// You can use this attribute to mark that an AnimationCurve can only have values
    /// that range from 0 to 1.  The user will be prevented from entering a curve that
    /// lies outside of these bounds.
    /// </summary>
    public class UnitCurveAttribute : CurveBoundsAttribute
    {
        public UnitCurveAttribute() : base(new Rect(0, 0, 1, 1)) { }
    }
}