using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class uGuiTest : MonoBehaviour
{
	private void Start()
	{
		if (FindObjectOfType<EventSystem>() == null)
		{
			var es = new GameObject("EventSystem", typeof(EventSystem));
			es.AddComponent<StandaloneInputModule>();
		}
		
		var canvasObject = new GameObject("Canvas");
		var canvas = canvasObject.AddComponent<Canvas>();
		canvasObject.AddComponent<GraphicRaycaster>();
		canvas.renderMode = RenderMode.ScreenSpaceOverlay;
		
		var buttonObject = new GameObject("Button");
		var image = buttonObject.AddComponent<Image>();
		image.transform.SetParent(canvas.transform);
		image.rectTransform.sizeDelta = new Vector2(180, 50);
		image.rectTransform.anchoredPosition = Vector3.zero;
		image.color = new Color(1f, .3f, .3f, .5f);
		
		var button = buttonObject.AddComponent<Button>();
		button.targetGraphic = image;
		button.onClick.AddListener(() => Debug.Log(Time.time));
		
		var textObject = new GameObject("Text");
		textObject.transform.parent = buttonObject.transform;
		var text = textObject.AddComponent<Text>();
		text.rectTransform.sizeDelta = Vector2.zero;
		text.rectTransform.anchorMin = Vector2.zero;
		text.rectTransform.anchorMax = Vector2.one;
		text.rectTransform.anchoredPosition = new Vector2(.5f, .5f);
		text.text = "Button Test!";
		text.font = Resources.FindObjectsOfTypeAll<Font>()[0];
		text.fontSize = 20;
		text.color = Color.yellow;
		text.alignment = TextAnchor.MiddleCenter;
	}
}