private Widget FindFocusableWidgetAbove(Widget from)
{
var ImmediateAbove = ActivableChildren.Where(c => c.Left == from.Left && c.Top < from.Top).OrderByDescending(c => c.Top).FirstOrDefault();
if (ImmediateAbove == null)
{
return(ActivableChildren.Where(c => c.Top < from.Top).OrderByDescending(c => c.Top).OrderBy(c => c.Left).FirstOrDefault());
}
return(ImmediateAbove);
}
private Widget FindFocusableWidgetBelow(Widget from)
{
var ImmediateBelow = ActivableChildren.Where(c => c.Left == from.Left && c.Top > from.Top).OrderBy(c => c.Top).FirstOrDefault();
if (ImmediateBelow == null)
{
return(ActivableChildren.Where(c => c.Top > from.Top).OrderBy(c => c.Left).OrderBy(c => c.Top).FirstOrDefault());
}
return(ImmediateBelow);
}
private void CycleFocus(int Direction = 1)
{
if (ActiveWidget == null)
{
lastIndex = 0;
ActiveWidget = ActivableChildren.FirstOrDefault();
}
else
{
lastIndex = (lastIndex + Direction) % ActivableChildren.Count;
if (lastIndex == -1)
{
lastIndex = ActivableChildren.Count - 1;
}
ActiveWidget = ActivableChildren[lastIndex];
}
}
private Widget FindFocusableWidgetToLeftOf(Widget from)
{
var ImmediateLeft = ActivableChildren.Where(c => c.Top == from.Top && c.Left < from.Left).OrderByDescending(c => c.Left).FirstOrDefault();
if (ImmediateLeft == null)
{
var RoughLeft = ActivableChildren.Where(c => c.Left < from.Left && Math.Abs(c.Top - from.Top) < 2).OrderByDescending(c => c.Left).OrderBy(c => Math.Abs(c.Top - from.Top)).FirstOrDefault();
if (RoughLeft == null)
{
return(ActivableChildren.Where(c => c.Top == from.Top).OrderByDescending(c => c.Left).FirstOrDefault());
}
return(RoughLeft);
}
return(ImmediateLeft);
}
