protected virtual void Dispose(bool disposing)
{
if (!_disposed)
{
if (disposing)
{
_backgroundDrawable?.Dispose();
_backgroundDrawable = null;
_defaultDrawable?.Dispose();
_defaultDrawable = null;
_rippleDrawable?.Dispose();
_rippleDrawable = null;
if (BorderElement != null)
{
BorderElement.PropertyChanged -= BorderElementPropertyChanged;
BorderElement = null;
}
if (_renderer != null)
{
_renderer.ElementChanged -= OnElementChanged;
_renderer = null;
}
}
_disposed = true;
}
}
public static void UpdateBorder(IVisualNativeElementRenderer renderer, IBorderController backgroundView)
{
var control = renderer.Control;
var ImageButton = backgroundView;
if (control == null)
{
return;
}
if (ImageButton.BorderColor != Color.Default)
{
control.Layer.BorderColor = ImageButton.BorderColor.ToCGColor();
}
control.Layer.BorderWidth = Math.Max(0f, (float)ImageButton.BorderWidth);
nfloat cornerRadius = _defaultCornerRadius;
if (ImageButton.IsSet(ImageButton.CornerRadiusProperty) && ImageButton.CornerRadius != (int)ImageButton.CornerRadiusProperty.DefaultValue)
{
cornerRadius = ImageButton.CornerRadius;
}
control.Layer.CornerRadius = cornerRadius;
}
static void OnControlChanged(object sender, EventArgs e)
{
IVisualNativeElementRenderer renderer = (IVisualNativeElementRenderer)sender;
IBorderController backgroundView = (IBorderController)renderer.Element;
UpdateBorder(renderer, backgroundView);
}
static void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
IVisualNativeElementRenderer renderer = (IVisualNativeElementRenderer)sender;
IBorderController backgroundView = (IBorderController)renderer.Element;
if (e.PropertyName == backgroundView.BorderWidthProperty.PropertyName || e.PropertyName == backgroundView.CornerRadiusProperty.PropertyName || e.PropertyName == backgroundView.BorderColorProperty.PropertyName)
{
UpdateBorder(renderer, backgroundView);
}
}
