using System;
using System.Runtime.InteropServices;
using UnityEngine;

// Token: 0x02000007 RID: 7
[RequireComponent(typeof(Camera))]
public class TransparentWindow : MonoBehaviour
{
    // Token: 0x0600000F RID: 15
    [DllImport("user32.dll")]
    private static extern IntPtr GetActiveWindow();

    // Token: 0x06000010 RID: 16
    [DllImport("user32.dll")]
    private static extern int SetWindowLong(IntPtr hWnd, int nIndex, uint dwNewLong);

    // Token: 0x06000011 RID: 17
    [DllImport("user32.dll")]
    private static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);

    // Token: 0x06000012 RID: 18
    [DllImport("user32.dll")]
    private static extern int SetLayeredWindowAttributes(IntPtr hwnd, int crKey, byte bAlpha, int dwFlags);

    // Token: 0x06000013 RID: 19
    [DllImport("user32.dll")]
    private static extern int SetWindowPos(IntPtr hwnd, int hwndInsertAfter, int x, int y, int cx, int cy, int uFlags);

    // Token: 0x06000014 RID: 20
    [DllImport("Dwmapi.dll")]
    private static extern uint DwmExtendFrameIntoClientArea(IntPtr hWnd, ref TransparentWindow.MARGINS margins);

    // Token: 0x06000015 RID: 21 RVA: 0x00002380 File Offset: 0x00000580
    private void Start()
    {
        this.mainCamera = base.GetComponent<Camera>();
        this.fWidth = Screen.width;
        this.fHeight = Screen.height;
        this.margins = new TransparentWindow.MARGINS
        {
            cxLeftWidth = -1
        };
        this.hwnd = TransparentWindow.GetActiveWindow();
        TransparentWindow.SetWindowLong(this.hwnd, -16, 2415919104u);
        TransparentWindow.SetWindowPos(this.hwnd, -1, 0, 0, this.fWidth, this.fHeight, 96);
        TransparentWindow.DwmExtendFrameIntoClientArea(this.hwnd, ref this.margins);
        Application.runInBackground = true;
    }

    // Token: 0x06000016 RID: 22 RVA: 0x0000241C File Offset: 0x0000061C
    private void Update()
    {
        RaycastHit raycastHit = default(RaycastHit);
        this.clickThrough = !Physics.Raycast(this.mainCamera.ScreenPointToRay(Input.mousePosition).origin, this.mainCamera.ScreenPointToRay(Input.mousePosition).direction, out raycastHit, 100f, -5);
        if (this.clickThrough != this.prevClickThrough)
        {
            if (this.clickThrough)
            {
                TransparentWindow.SetWindowLong(this.hwnd, -16, 2415919104u);
                TransparentWindow.SetWindowLong(this.hwnd, -20, 524320u);
                TransparentWindow.SetLayeredWindowAttributes(this.hwnd, 0, byte.MaxValue, 2);
                TransparentWindow.SetWindowPos(this.hwnd, -1, 0, 0, this.fWidth, this.fHeight, 96);
            }
            else
            {
                TransparentWindow.SetWindowLong(this.hwnd, -20, 4294442975u);
                TransparentWindow.SetWindowPos(this.hwnd, -1, 0, 0, this.fWidth, this.fHeight, 96);
            }
            this.prevClickThrough = this.clickThrough;
        }
    }

    // Token: 0x06000017 RID: 23 RVA: 0x00002525 File Offset: 0x00000725
    private void OnRenderImage(RenderTexture from, RenderTexture to)
    {
        Graphics.Blit(from, to, this.m_Material);
    }

    // Token: 0x04000012 RID: 18
    [SerializeField]
    private Material m_Material;

    // Token: 0x04000013 RID: 19
    [SerializeField]
    private Camera mainCamera;

    // Token: 0x04000014 RID: 20
    private bool clickThrough = true;

    // Token: 0x04000015 RID: 21
    private bool prevClickThrough = true;

    // Token: 0x04000016 RID: 22
    private const int GWL_STYLE = -16;

    // Token: 0x04000017 RID: 23
    private const uint WS_POPUP = 2147483648u;

    // Token: 0x04000018 RID: 24
    private const uint WS_VISIBLE = 268435456u;

    // Token: 0x04000019 RID: 25
    private const int HWND_TOPMOST = -1;

    // Token: 0x0400001A RID: 26
    private int fWidth;

    // Token: 0x0400001B RID: 27
    private int fHeight;

    // Token: 0x0400001C RID: 28
    private IntPtr hwnd;

    // Token: 0x0400001D RID: 29
    private TransparentWindow.MARGINS margins;

    // Token: 0x0200003E RID: 62
    private struct MARGINS
    {
        // Token: 0x04000247 RID: 583
        public int cxLeftWidth;

        // Token: 0x04000248 RID: 584
        public int cxRightWidth;

        // Token: 0x04000249 RID: 585
        public int cyTopHeight;

        // Token: 0x0400024A RID: 586
        public int cyBottomHeight;
    }
}