Catel.Windows.Controls.PopupLayout.ShowPopup C# (CSharp) Метод

        public async Task<bool> ShowPopup(View view)
        {
            Argument.IsNotNull(() => view);

            await DismissPopup();

            _popupView = view;
            _content.InputTransparent = true;
            var backdrop = new RelativeLayout
            {
                BackgroundColor = Color.FromRgba(0, 0, 0, 0.4),
                Opacity = 1,
                GestureRecognizers =
                {
                    new TapGestureRecognizer()
                }
            };

            if (_popupView.BackgroundColor == Color.Default)
            {
                _popupView.BackgroundColor = Color.FromRgb(40, 40, 40);
            }

            if (_popupView.WidthRequest < 0)
            {
                _popupView.WidthRequest = Width;
            }

            if (_popupView.HeightRequest < 0)
            {
                _popupView.HeightRequest = Height;
            }

            backdrop.Children.Add(_popupView,
                Constraint.RelativeToParent(p => Width/2 - _popupView.WidthRequest/2),
                Constraint.RelativeToParent(p => Height/2 - _popupView.HeightRequest/2),
                Constraint.RelativeToParent(p => _popupView.WidthRequest),
                Constraint.RelativeToParent(p => _popupView.HeightRequest));

            _backdrop = backdrop;

            Children.Add(backdrop, Constraint.Constant(0), Constraint.Constant(0),
                Constraint.RelativeToParent(p => p.Width), Constraint.RelativeToParent(p => p.Height));

            UpdateChildrenLayout();

            return await _backdrop.FadeTo(1);
        }