private UIRectCorner GetCornerPosition(UIRectCorner corner, bool shouldAppend)
{
var val = corner;
if (RoundedCornerEffect.HasTopLeft(this.Element))
{
val = shouldAppend ? val | UIRectCorner.TopLeft : UIRectCorner.TopLeft;
}
if (RoundedCornerEffect.HasTopRight(this.Element))
{
val = shouldAppend ? val | UIRectCorner.TopRight : UIRectCorner.TopRight;
}
if (RoundedCornerEffect.HasBottomLeft(this.Element))
{
val = shouldAppend ? val | UIRectCorner.BottomLeft : UIRectCorner.BottomLeft;
}
if (RoundedCornerEffect.HasBottomRight(this.Element))
{
val = shouldAppend ? val | UIRectCorner.BottomRight : UIRectCorner.BottomRight;
}
return(val);
}
private void UpdateBorderLayer(UIBezierPath maskPath)
{
var borderWidth = RoundedCornerEffect.GetBorderWidth(this.Element);
var borderColor = RoundedCornerEffect.GetBorderColor(this.Element);
var bounds = new CGRect(0, 0, FormView.Width, FormView.Height);
_borderLayer?.RemoveFromSuperLayer();
_borderLayer = new CAShapeLayer
{
FillColor = Color.Transparent.ToCGColor(),
StrokeColor = borderColor.ToCGColor(),
LineWidth = (nfloat)borderWidth,
Frame = bounds,
Path = maskPath.CGPath
};
SetLayer(NativeView, _borderLayer);
}
private void UpdateLayer()
{
var position = RoundedCornerEffect.GetRoundedCornerPosition(this.Element);
var radius = RoundedCornerEffect.GetRadius(this.Element);
if (position == RoundedCornerPosition.None)
{
return;
}
var bounds = new CGRect(0, 0, FormView.Width, FormView.Height);
var corner = GetCornerPosition(UIRectCorner.AllCorners, false);
corner = position == RoundedCornerPosition.AllCorners ? UIRectCorner.AllCorners : GetCornerPosition(corner, true);
var maskPath = UIBezierPath.FromRoundedRect(bounds, corner, new CGSize(radius, radius));
UpdateMaskLayer(maskPath);
UpdateBorderLayer(maskPath);
}
