/****************************************************
    文件：FixScreenRatio.cs
    作者：陶长春
    邮箱：376248129@qq.com
    日期：2025年3月13日 9:10:37
    UnityVersion: 2021.3.13f1
    功能：UI适配
*****************************************************/
using TFramework;
using System.Collections;
using UnityEngine;
using System.Collections.Generic;
using UnityEngine.UI;

namespace TFramework
{
    public class FixScreenRatio : MonoBehaviour
    {
        CanvasScaler canvasScaler;
        float rateW = 1.0f;
        float rateH = 1.0f;
        private int cachedWidth = 0;
        private int cachedHeight = 0;

        public static float windowRate = 1.0f;
        public static float screenRate = 1.0f;
        public static float width = 1920f;
        public static float height = 1080f;

        [System.NonSerialized]
        public bool IsUpdatePerFrame = true;

        private void Awake()
        {
            Screen.autorotateToPortrait = false;
            Screen.autorotateToPortraitUpsideDown = false;

            canvasScaler = GetComponent<CanvasScaler>();
            screenRate = width / height;
        }

        private void Update()
        {
            if (IsUpdatePerFrame)
            {
                if (cachedWidth != Screen.width || cachedHeight != Screen.height)
                {
                    UpdateWhenScreenChange();
                }
            }
        }

        public void UpdateWhenScreenChange()
        {
            cachedWidth = Screen.width;
            cachedHeight = Screen.height;
            Scale();
        }

        void Scale()
        {
            rateW = Screen.width / width;
            rateH = Screen.height / height;

            if (rateW > rateH)
            {
                //以高度适配
                windowRate = rateH;

                if (canvasScaler != null)
                {
                    canvasScaler.matchWidthOrHeight = 1;
                }
            }
            else
            {
                //以宽度适配
                windowRate = rateW;
                if (canvasScaler != null)
                {
                    canvasScaler.matchWidthOrHeight = 0;
                }
            }
        }
    }
}