WindowStateController.cs

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using System.Drawing;
using System.Windows.Forms;
using ReLogic.OS;
 
namespace Terraria.Graphics;
 
public class WindowStateController
{
    public bool CanMoveWindowAcrossScreens => Platform.IsWindows;
 
    public string ScreenDeviceName
    {
        get
        {
            if (!Platform.IsWindows)
            {
                return "";
            }
            return Main.instance.Window.ScreenDeviceName;
        }
    }
 
    public void TryMovingToScreen(string screenDeviceName)
    {
        if (CanMoveWindowAcrossScreens && TryGetBounds(screenDeviceName, out var bounds) && IsVisibleOnAnyScreen(bounds))
        {
            Form form = (Form)Control.FromHandle(Main.instance.Window.Handle);
            if (WouldViewFitInScreen(form.Bounds, bounds))
            {
                form.Location = new Point(bounds.Width / 2 - form.Width / 2 + bounds.X, bounds.Height / 2 - form.Height / 2 + bounds.Y);
            }
        }
    }
 
    private bool TryGetBounds(string screenDeviceName, out Rectangle bounds)
    {
        bounds = default(Rectangle);
        Screen[] allScreens = Screen.AllScreens;
        foreach (Screen screen in allScreens)
        {
            if (screen.DeviceName == screenDeviceName)
            {
                bounds = screen.Bounds;
                return true;
            }
        }
        return false;
    }
 
    private bool WouldViewFitInScreen(Rectangle view, Rectangle screen)
    {
        if (view.Width <= screen.Width)
        {
            return view.Height <= screen.Height;
        }
        return false;
    }
 
    private bool IsVisibleOnAnyScreen(Rectangle rect)
    {
        Screen[] allScreens = Screen.AllScreens;
        for (int i = 0; i < allScreens.Length; i++)
        {
            if (allScreens[i].WorkingArea.IntersectsWith(rect))
            {
                return true;
            }
        }
        return false;
    }
}