public Popup Create(PopupSize size, UIElement content = null)
{
var container = new ContentControl
{
HorizontalContentAlignment = HorizontalAlignment.Stretch,
VerticalContentAlignment = VerticalAlignment.Stretch,
Height = Window.Current.Bounds.Height,
Width = Window.Current.Bounds.Width,
Content = content,
};
var popup = new Popup
{
Child = container,
HorizontalOffset = 0,
VerticalOffset = 0,
};
WindowSizeChangedEventHandler handler = (s, e) =>
{
if (popup.IsOpen)
{
container.Height = e.Size.Height;
container.Width = e.Size.Width;
}
};
if (size == PopupSize.FullScreen)
{
popup.RegisterPropertyChangedCallback(Popup.IsOpenProperty, (d, e) =>
{
if (popup.IsOpen)
{
Window.Current.SizeChanged += handler;
}
else
{
Window.Current.SizeChanged -= handler;
}
});
}
return popup;
}