public Line(LineProps props, params IElement <IElementState>[] children)
{
if (props == null)
{
throw new InvalidOperationException();
}
this.Children = children;
this.Props = props;
}
public LineState(LineState existing, Line e, RenderContext context)
{
props = e.Props;
var bounds = context.Bounds;
nestedElementStates = e.Children.Select((elem, index) =>
{
var result = elem?.Update(existing?.nestedElementStates?[index], context.WithBounds(bounds));
if (result != null)
{
bounds = bounds.Remaining(e.Props.Direction, result.BoundingBox);
}
return(result);
}).ToList();
BoundingBox = context.Bounds.Sum(e.Props.Direction, nestedElementStates.Where(p => p != null).Select(p => p.BoundingBox));
}