using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Runtime.InteropServices;
using System;
using static ResolutionTest;
using UnityEngine.XR;
/*xbb
 * 系统方法类
 * */
public class WindowsTools
{

    //设置当前窗口的显示状态
    [DllImport("user32.dll")]
    public static extern bool ShowWindow(System.IntPtr hwnd, int nCmdShow);

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

    //设置窗口边框
    [DllImport("user32.dll")]
    public static extern IntPtr SetWindowLong(IntPtr hwnd, int _nIndex, int dwNewLong);

    //设置窗口位置，大小
    [DllImport("user32.dll")]
    public static extern bool SetWindowPos(IntPtr hWnd, int hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);

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

    [DllImport("user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool GetWindowRect(IntPtr hWnd, ref RECT lpRect);

    [DllImport("user32.dll")]
    public static extern IntPtr GetWindowLong(IntPtr hWnd, int nIndex);

    //边框参数
    const uint SWP_SHOWWINDOW = 0x0040;
    const int GWL_STYLE = -16;
    const int WS_BORDER = 1;
    const int WS_POPUP = 0x800000;
    const int SW_SHOWMINIMIZED = 2;//(最小化窗口)
    private const int WS_CAPTION = 0xC00000;
    private const int WS_SYSMENU = 0x80000;

    //private const int WS_MAXIMIZEBOX = &H10000      ;
    //private const int WS_MINIMIZEBOX = &H20000      ;
    //private const int WS_SYSMENU = &H80000         ;
    //private const int WS_CLIPSIBLINGS = &H4000000   ;
    //private const int WS_CLIPCHILDREN = &H2000000  ;
    //private const int WS_OVERLAPPED = &H0&         ;
    //    private const int WS_THICKFRAME = &H40000      ;

    /// <summary>
    /// 窗口的Z排序设置。
    /// </summary>
    public enum ZOrder
    {
        /// <summary>
        /// 让窗口变为当时的最顶层，相当于给窗口设置了一个"置顶"标志，
        /// 与其他有这个标志的窗口竞争最顶层的位置（鼠标点击可切换哪个窗口成为当时的最顶层），
        /// 所有带这个标志的窗口处在所有不带这个标志的窗口的上面，离用户更近。
        /// </summary>
        TopMost = -1,

        /// <summary>
        /// 取消窗口的"置顶"标志，于是这个窗口就变成了普通窗口，置顶窗口们就不和它一起玩了，它之后便和其他普通窗口一桌竞争了。
        /// 这个设置只对本来就是置顶窗口的窗口有用，对普通窗口没效果。
        /// </summary>
        NoTopMost = -2,

        /// <summary>
        /// 将窗口移动到普通窗口的顶部，依然处在置顶窗口们的下面，依然是普通窗口，不会一直待在顶部，会在以后鼠标点来点去的时候跑到其他窗口下面。
        /// </summary>
        Top = 0,

        /// <summary>
        /// 将窗口移动到普通窗口的底部。其他与Top同理。
        /// </summary>
        Bottom = 1,
    }

    public RECT GetWinRect(IntPtr _hWnd)
    {
        RECT rect = new RECT();
        GetWindowRect(_hWnd, ref rect);
        return rect;
    }

    //最小化窗口
    public void SetMinWindows(IntPtr _hWnd)
    {
        ShowWindow(_hWnd, SW_SHOWMINIMIZED);
        //具体窗口参数看这     https://msdn.microsoft.com/en-us/library/windows/desktop/ms633548(v=vs.85).aspx
    }

    public IntPtr GetWindowLongA(IntPtr _hWnd, int nIndex)
    {
        return GetWindowLong(_hWnd, nIndex);
    }

    private Rect current_rect;
    //设置无边框，并设置框体大小，位置
    public void SetNoFrameWindow(IntPtr _hWnd, Rect rect)
    {
        current_rect = rect;
        SetWindowLong(_hWnd, GWL_STYLE, WS_POPUP);
        bool result = SetWindowPos(_hWnd, 0, (int)rect.x, (int)rect.y, (int)rect.width, (int)rect.height, SWP_SHOWWINDOW);
    }

    //设置有边框
    public void SetFrameWindow(IntPtr _hWnd, Rect rect)
    {
        current_rect = rect;
        SetWindowLong(_hWnd, GWL_STYLE, 0x14ca0000);
        bool result = SetWindowPos(_hWnd, 0, (int)rect.x, (int)rect.y, (int)rect.width, (int)rect.height, SWP_SHOWWINDOW);
    }

    public void SetTopMost(IntPtr _hWnd, int _mode, Rect current_rect)
    {
        SetWindowPos(_hWnd, _mode, (int)current_rect.x, (int)current_rect.y, (int)current_rect.width, (int)current_rect.height, SWP_SHOWWINDOW);
    }

    /// <summary>
    /// 设置窗口置顶
    /// </summary>
    /// <param name="_hWnd"></param>
    public void SetTopMost(IntPtr _hWnd)
    {
        SetWindowPos(_hWnd, -1, (int)current_rect.x, (int)current_rect.y, (int)current_rect.width, (int)current_rect.height, SWP_SHOWWINDOW);
    }

    /// <summary>
    /// 设置窗口置顶
    /// </summary>
    /// <param name="_hWnd"></param>
    public void CancelTopMost(IntPtr _hWnd)
    {
        SetWindowPos(_hWnd, -2, (int)current_rect.x, (int)current_rect.y, (int)current_rect.width, (int)current_rect.height, SWP_SHOWWINDOW);
    }

    //拖动窗口
    public void DragWindow(IntPtr _hWnd)
    {
        ReleaseCapture();
        SendMessage(_hWnd, 0xA1, 0x02, 0);
        SendMessage(_hWnd, 0x0202, 0, 0);
    }

    public void DragWindowEnd(IntPtr _hWnd)
    {
        var _rect = GetWinRect(_hWnd);
        current_rect.x = _rect.Left;
        current_rect.y = _rect.Top;
    }
}