// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
using System;
 
namespace System.Windows.Input
{
    /// <summary>
    ///    The raw actions being reported from the stylus.
    /// </summary>
    /// <remarks>
    ///     Note that multiple actions can be reported at once.
    /// </remarks>
    [Flags]
    internal enum RawStylusActions
    {
        /// <summary>
        ///     NoAction
        /// </summary>
        None             = 0x000,
            
        /// <summary>
        ///     The stylus became active in the application.  The application
        ///     may need to refresh its stylus state.
        /// </summary>
        Activate         = 0x001,
            
        /// <summary>
        ///     The stylus became inactive in the application.  The application
        ///     may need to clear its stylus state.
        /// </summary>
        Deactivate       = 0x002,
            
        /// <summary>
        ///     The stylus just came in contact with the digitizer
        /// </summary>
        Down             = 0x004,
            
        /// <summary>
        ///     The stylus just lost contact with the digitizer
        /// </summary>
        Up               = 0x008,
            
        /// <summary>
        ///     The stylus is sending more data while in contact with the digitizer.
        /// </summary>
        Move             = 0x010,
            
        /// <summary>
        ///     The stylus is sending more data while hovering in-air over the digitizer.
        /// </summary>
        InAirMove        = 0x020,
            
        /// <summary>
        ///     The stylus is now in range of the digitizer.
        /// </summary>
        InRange          = 0x040,
            
        /// <summary>
        ///     The stylus is now out of range of the digitizer.
        /// </summary>
        OutOfRange       = 0x080,
 
        /// <summary>
        ///     The stylus is now out of range of the digitizer.
        /// </summary>
        SystemGesture    = 0x100,
    }
    /// <summary>
    /// Internal helper for validating RawStylusActions
    /// </summary>
    internal static class RawStylusActionsHelper
    {
        private const RawStylusActions MaxActions =
            RawStylusActions.None |
            RawStylusActions.Activate |
            RawStylusActions.Deactivate |
            RawStylusActions.Down |
            RawStylusActions.Up |
            RawStylusActions.Move |
            RawStylusActions.InAirMove |
            RawStylusActions.InRange |
            RawStylusActions.OutOfRange |
            RawStylusActions.SystemGesture;
 
        internal static bool IsValid(RawStylusActions action)
        {
            if (action < RawStylusActions.None || action > MaxActions)
            {
                return false;
            }
            return true;
        }
    }
}