unity recttransform resize event
using UnityEngine;
using UnityEngine.UI;
namespace FeelFreeToBorrowThisCode
{
[RequireComponent(typeof(HorizontalLayoutGroup))]
public class ResponsiveColumns : MonoBehaviour
{
RectTransform _leftSide;
RectTransform _rightSide;
RectTransform _column2;
bool _vertical = true;
void Start()
{
RectTransform rtrans = (RectTransform)transform;
_leftSide = (RectTransform)rtrans.GetChild(0);
_rightSide = (RectTransform)rtrans.GetChild(1);
_column2 = (RectTransform)_leftSide.GetChild(1);
UpdateLayout();
}
void OnRectTransformDimensionsChange()
{
UpdateLayout();
}
void UpdateLayout()
{
if (_leftSide == null) return;
if (Screen.width > Screen.height)
{
if (_vertical)
{
_column2.SetParent(_rightSide);
_rightSide.gameObject.SetActive(true);
_vertical = false;
}
}
else if (!_vertical)
{
_column2.SetParent(_leftSide);
_rightSide.gameObject.SetActive(false);
_vertical = true;
}
}
}
}