public override void Draw(DrawingContext context, IList <IDrawableObject> drawables)
{
if (this.Viewport != (BoundingRectangle)context.GraphicsDevice.Viewport.TitleSafeArea)
{
this.Viewport = (BoundingRectangle)context.GraphicsDevice.Viewport.TitleSafeArea;
}
if (Viewport == null)
{
throw new ArgumentNullException("Viewport");
}
BoundingRectangle bounds = new BoundingRectangle
{
X = Viewport.X,
Y = Viewport.Y,
Width = Viewport.Width,
Height = Viewport.Height,
};
var availableSize = new Vector2(bounds.Width, bounds.Height);
pages.ForEach <Page>(o => o.Measure(availableSize));
pages.ForEach <Page>(o => o.Arrange(bounds));
pages[SelectedIndex].Render(Renderer);
base.Draw(context, drawables);
}