using System;
using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using Unity.VisualScripting;
//using UnityEditor.PackageManager.UI;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
using UnityEngine.XR;

public class ResolutionTest : MonoBehaviour
{
    public InputField if1, if2;
    public InputField if3, if4;
    public Button bt1, bt2;
    public Text txt;

    IntPtr hwnd;

    private void Start()
    {
        hwnd = GetForegroundWindow();

#if !UNITY_EDITOR
        bt1.onClick.AddListener(() => SetResolution(int.Parse(if1.text), int.Parse(if2.text)));
        bt2.onClick.AddListener(() => SetResolution(1600, 900));

        SetWindowLong(hwnd, GWL_STYLE, WS_POPUP);
        bool result = SetWindowPos(GetForegroundWindow(), 0, 0, 0, 1600, 900, SWP_SHOWWINDOW);
#endif
        //GetRect();
    }

    RECT GetRect()
    {
        GetWindowRect(hwnd, out RECT rect);
        string msg = rect.Left + " " + rect.Right + " " + rect.Top + " " + rect.Bottom;
        txt.text = msg;
        return rect;
    }

    int _posX, _posY, _Txtwith, _Txtheight;

    void SetResolution(int width, int height)
    {
        Screen.SetResolution(width, height, false);
        GetRect();
        _Txtwith = width;
        _Txtheight = height;
        _posX = int.Parse(if3.text);
        _posY = int.Parse(if4.text);
        StartCoroutine("Setposition");
    }

    IEnumerator Setposition()
    {
        yield return new WaitForSeconds(0.1f);		//不知道为什么发布于行后，设置位置的不会生效，我延迟0.1秒就可以
        SetWindowLong(GetForegroundWindow(), GWL_STYLE, WS_POPUP);      //无边框
        bool result = SetWindowPos(GetForegroundWindow(), 0, _posX, _posY, _Txtwith, _Txtheight, SWP_SHOWWINDOW);       //设置屏幕大小和位置
    }


    #region 窗口放大缩小
    public int winPosX;                 //窗口左上角x
    public int winPosY;                 //窗口左上角y

    public int minWidth, maxWidth;      //窗口宽度
    public int minHeight, maxHeight;    //窗口高度

    [DllImport("user32.dll")]
    static extern IntPtr SetWindowLong(IntPtr hwnd, int _nIndex, int dwNewLong);
    [DllImport("user32.dll")]
    static extern bool SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);
    [DllImport("user32.dll")]
    static extern IntPtr GetForegroundWindow();

    const uint SWP_SHOWWINDOW = 0x0040;
    const int GWL_STYLE = -16;
    const int WS_BORDER = 1;
    const int WS_POPUP = 0x800000;

    [DllImport("user32.dll")]
    static extern bool GetWindowRect(IntPtr hwnd, out RECT lpRect);

    [StructLayout(LayoutKind.Sequential)]
    public struct RECT
    {
        public int Left;                             //最左坐标
        public int Top;                             //最上坐标
        public int Right;                           //最右坐标
        public int Bottom;                        //最下坐标
    }

    /// <summary>
    /// 拖动窗口
    /// </summary>
    /// <param name="window">当前句柄</param>
    public void DragWindow(IntPtr window)
    {
        ReleaseCapture();
        SendMessage(window, 0xA1, 0x02, 0);
        SendMessage(window, 0x0202, 0, 0);
    }

   public bool candrag;

    //窗口拖动
    [DllImport("user32.dll")]
    public static extern bool ReleaseCapture();
    [DllImport("user32.dll")]
    public static extern bool SetCapture(IntPtr hwnd);
    [DllImport("user32.dll")]
    public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);

    private void Update()
    {
        if(Input.GetMouseButtonDown(0))
        {
            Debug.Log("dndndndndn");
            candrag = !EventSystem.current.IsPointerOverGameObject();
            Debug.Log(Input.mousePosition);
        }
        if (Input.GetMouseButton(0)&&candrag)
        {
            DragWindow(hwnd);
        }
        if (Input.GetMouseButtonUp(0)&& candrag|| Input.GetKeyDown(KeyCode.R))
        {
            Debug.Log("upupupup");
            SetCapture(hwnd);
            SendMessage(hwnd, 0xA2, 0x02, 0);
            SendMessage(hwnd, 0x0202, 0, 0);
        }
    }

    ////获取当前激活窗口
    //[DllImport("user32.dll", EntryPoint = "GetForegroundWindow")]
    //public static extern System.IntPtr GetForegroundWindow();

    private void WindowSizeEvent(bool ison)
    {
        if (ison)
        {
            //显示器支持的所有分辨率
            int i = Screen.resolutions.Length;

            int resWidth = Screen.resolutions[i - 1].width;
            int resHeight = Screen.resolutions[i - 1].height;

            winPosX = resWidth / 2 - minWidth / 2;
            winPosY = resHeight / 2 - minHeight / 2;

            SetWindowLong(GetForegroundWindow(), GWL_STYLE, WS_POPUP);
            bool result = SetWindowPos(GetForegroundWindow(), 0, winPosX, winPosY, minWidth, minHeight, SWP_SHOWWINDOW);

            //windowSize.GetComponent<Image>().sprite = icon_big;//修改图标
        }
        else
        {
            //显示器支持的所有分辨率
            int i = Screen.resolutions.Length;

            int resWidth = Screen.resolutions[i - 1].width;
            int resHeight = Screen.resolutions[i - 1].height;

            winPosX = resWidth / 2 - minWidth / 2;
            winPosY = resHeight / 2 - minHeight / 2;

            SetWindowLong(GetForegroundWindow(), GWL_STYLE, WS_POPUP);
            bool result = SetWindowPos(GetForegroundWindow(), 0, 0, 0, maxWidth, maxHeight, SWP_SHOWWINDOW);

            //windowSize.GetComponent<Image>().sprite = icon_smaller;//修改图标
        }
    }
    #endregion

}