public ColorBackground(SkiView view, SKColor color)
{
_view = view;
ColorProp = new LinkedProperty <SKColor>(
this,
color,
valueChanged: (sender, args) => _view.InvalidateSurface()
);
}
public TapGestureRecognizer(SkiView view, Action <SKPoint> onTapped) : base(view)
{
_onTapped = onTapped;
}
public SkiGestureRecognizer(SkiView view)
{
View = view;
}
protected bool UpdateChildPoint(SkiView child, SKRect bounds)
{
if (child?.Node == null)
{
return(false);
}
var previousPoint = child.Node.RelativePoint;
child.Node.RelativePoint = new SKPoint(GetX(), GetY());
return(child.Node.RelativePoint != previousPoint);
float GetX()
{
switch (child.HorizontalOptions)
{
case SkiLayoutOptions.Fill:
case SkiLayoutOptions.Start:
return(bounds.Left);
case SkiLayoutOptions.Center:
if (child.Size.Width < bounds.Width)
{
return(bounds.MidX - child.Size.Width / 2);
}
return(bounds.Left);
case SkiLayoutOptions.End:
if (child.Size.Width < bounds.Width)
{
return(bounds.Right - child.Size.Width);
}
return(bounds.Left);
default:
throw new ArgumentOutOfRangeException();
}
}
float GetY()
{
switch (child.VerticalOptions)
{
case SkiLayoutOptions.Fill:
case SkiLayoutOptions.Start:
return(bounds.Top);
case SkiLayoutOptions.Center:
if (child.Size.Height < bounds.Height)
{
return(bounds.MidY - child.Size.Height / 2);
}
return(bounds.Top);
case SkiLayoutOptions.End:
if (child.Size.Height < bounds.Height)
{
return(bounds.Bottom - child.Size.Height);
}
return(bounds.Top);
default:
throw new ArgumentOutOfRangeException();
}
}
}
