public void InvalidateClipToBounds()
{
if (_renderer.NativeView == null)
{
return;
}
if (_renderer.NativeView.Layer != null)
{
/*
* MDCInkView
* From https://github.com/material-components/material-components-ios-codelabs/blob/master/MDC-111/Swift/Starter/Pods/MaterialComponents/components/Ink/src/MDCInkView.m
* MDCInkView uses SuperView's ShadowPath in order to mask the ripple
* So we calculate the rounded corners path and we set it to the ShadowPath
* but with ShadowOpacity to 0 in order to not overlap the MDCShadowLayer
*/
_renderer.NativeView.Layer.ShadowPath?.Dispose();
if (_backgroundElement.IsRippleEnabled)
{
_renderer.NativeView.Layer.ShadowOpacity = 0;
_renderer.NativeView.Layer.ShadowPath = BackgroundKit
.GetRoundCornersPath(_renderer.NativeView.Layer.Bounds, _backgroundElement.CornerRadius).CGPath;
}
else
{
_renderer.NativeView.Layer.ShadowPath = null;
}
}
InvalidateSubViewsMask();
}
private void InvalidateSubViewsMask()
{
if (_renderer.NativeView.Subviews == null)
{
return;
}
var transform = GetMaskTransform();
CGRect bounds;
CGPath maskPath;
switch (_backgroundElement.BorderStyle)
{
case BorderStyle.Inner:
bounds = _renderer.NativeView.Bounds;
maskPath = BackgroundKit.GetRoundCornersPath(
bounds, _backgroundElement.CornerRadius).CGPath;
break;
default:
var borderWidth = (float)_backgroundElement.BorderWidth;
bounds = _renderer.NativeView.Bounds.Inset(borderWidth, borderWidth);
maskPath = BackgroundKit.GetRoundCornersPath(
bounds, _backgroundElement.CornerRadius, borderWidth).CGPath;
break;
}
foreach (var subView in _renderer.NativeView.Subviews)
{
if (subView?.Layer?.Sublayers?.FirstOrDefault(
l => l is GradientStrokeLayer) != null)
{
continue;
}
subView.Layer.Mask?.Dispose();
subView.Layer.Mask = new CAShapeLayer
{
Frame = _renderer.NativeView.Bounds,
Path = transform == null ? maskPath : new CGPath(maskPath, transform.Value)
};
subView.Layer.MasksToBounds = true;
}
}
public UIBezierPath GetRoundCornersPath(CGRect bounds) => BackgroundKit.GetRoundCornersPath(bounds, _cornerRadius);