using System;
using UnityEditor;
using UnityEngine;
using UnityEngine.UI;
using System.Collections.Generic;

[InitializeOnLoad]
public class ImageCreator : Editor
{
  private static ImageCreator()
  {
    EditorApplication.hierarchyWindowChanged += OnChanged;
  }

  private static void OnChanged()
  {
    var obj = Selection.activeGameObject;

    if (obj == null || obj.transform.parent == null) return;

    if ((obj.transform.parent.GetComponent<CanvasRenderer>() != null || obj.transform.parent.GetComponent<Canvas>() != null) && obj.GetComponent<SpriteRenderer>() != null)
    {
      var rectTransform = obj.AddComponent<RectTransform>();
      rectTransform.anchoredPosition3D = Vector3.zero;
      rectTransform.localScale = Vector3.one;
      var spr = obj.GetComponent<SpriteRenderer>().sprite;
      var img = obj.AddComponent<Image>();
      img.sprite = spr;
      img.SetNativeSize();
      DestroyImmediate(obj.GetComponent<SpriteRenderer>());
    }
  }
}