namespace PencilKit
{
    [Advice("This API is not available when using UIKit on macOS.")]
    [Introduced(PlatformName.iOS, 13, 0, PlatformArchitecture.All, null)]
    [Protocol(Name = "PKToolPickerObserver", WrapperType = typeof(PKToolPickerObserverWrapper))]
    [ProtocolMember(IsProperty = false, IsRequired = false, IsStatic = false, Name = "SelectedToolDidChange", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(PKToolPicker) }, Selector = "toolPickerSelectedToolDidChange:")]
    [ProtocolMember(IsProperty = false, IsRequired = false, IsStatic = false, Name = "IsRulerActiveDidChange", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(PKToolPicker) }, Selector = "toolPickerIsRulerActiveDidChange:")]
    [ProtocolMember(IsProperty = false, IsRequired = false, IsStatic = false, Name = "VisibilityDidChange", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(PKToolPicker) }, Selector = "toolPickerVisibilityDidChange:")]
    [ProtocolMember(IsProperty = false, IsRequired = false, IsStatic = false, Name = "FramesObscuredDidChange", ParameterByRef = new[] { false }, ParameterType = new[] { typeof(PKToolPicker) }, Selector = "toolPickerFramesObscuredDidChange:")]
    [Unavailable(PlatformName.MacCatalyst, PlatformArchitecture.All, null)]
    [Unavailable(PlatformName.MacOSX, PlatformArchitecture.All, null)]
    public interface IPKToolPickerObserver : INativeObject, IDisposable
}