Shadowsocks.View.MenuViewController.UpdateTrayIcon C# (CSharp) Method

        private void UpdateTrayIcon()
        {
            int dpi;
            Graphics graphics = Graphics.FromHwnd(IntPtr.Zero);
            dpi = (int)graphics.DpiX;
            graphics.Dispose();
            icon_baseBitmap = null;
            if (dpi < 97)
            {
                // dpi = 96;
                icon_baseBitmap = Resources.ss16;
            }
            else if (dpi < 121)
            {
                // dpi = 120;
                icon_baseBitmap = Resources.ss20;
            }
            else
            {
                icon_baseBitmap = Resources.ss24;
            }
            Configuration config = controller.GetConfigurationCopy();
            bool enabled = config.enabled;
            bool global = config.global;
            icon_baseBitmap = getTrayIconByState(icon_baseBitmap, enabled, global);

            icon_base = Icon.FromHandle(icon_baseBitmap.GetHicon());
            targetIcon = icon_base;
            icon_in = Icon.FromHandle(AddBitmapOverlay(icon_baseBitmap, Resources.ssIn24).GetHicon());
            icon_out = Icon.FromHandle(AddBitmapOverlay(icon_baseBitmap, Resources.ssOut24).GetHicon());
            icon_both = Icon.FromHandle(AddBitmapOverlay(icon_baseBitmap, Resources.ssIn24, Resources.ssOut24).GetHicon());
            _notifyIcon.Icon = targetIcon;

            string serverInfo = null;
            if (controller.GetCurrentStrategy() != null)
            {
                serverInfo = controller.GetCurrentStrategy().Name;
            }
            else
            {
                serverInfo = config.GetCurrentServer().FriendlyName();
            }
            // show more info by hacking the P/Invoke declaration for NOTIFYICONDATA inside Windows Forms
            string text = I18N.GetString("Shadowsocks") + " " + UpdateChecker.Version + "\n" +
                          (enabled ?
                              I18N.GetString("System Proxy On: ") + (global ? I18N.GetString("Global") : I18N.GetString("PAC")) :
                              String.Format(I18N.GetString("Running: Port {0}"), config.localPort))  // this feedback is very important because they need to know Shadowsocks is running
                          + "\n" + serverInfo;
            ViewUtils.SetNotifyIconText(_notifyIcon, text);
        }