HidValue.cs

using System;
using System.Linq;
using Linearstar.Windows.RawInput.Native;

namespace Linearstar.Windows.RawInput
{
    public class HidValue
    {
        internal readonly HidReader reader;
        internal readonly HidPValueCaps valueCaps;

        public int ReportId => valueCaps.ReportID;

        public int ReportCount => valueCaps.ReportCount;

        public HidUsageAndPage UsageAndPage { get; }

        public HidUsageAndPage LinkUsageAndPage => new HidUsageAndPage(valueCaps.LinkUsagePage, valueCaps.LinkUsage);

        public int LinkCollection => valueCaps.LinkCollection;

        public int MinValue => valueCaps.LogicalMin;

        public int MaxValue => valueCaps.LogicalMax;

        public int MinPhysicalValue => valueCaps.PhysicalMin;

        public int MaxPhysicalValue => valueCaps.PhysicalMax;

        public bool CanBeNull => valueCaps.HasNull;

        internal HidValue(HidReader reader, HidPValueCaps valueCaps, ushort usage)
        {
            this.reader = reader;
            this.valueCaps = valueCaps;
            UsageAndPage = new HidUsageAndPage(valueCaps.UsagePage, usage);
        }

        public HidValueState GetValue(ArraySegment<byte> report) =>
            GetValue(report.ToArray(), report.Count);

        public HidValueState GetValue(byte[] report, int reportLength) =>
            new HidValueState(this, report, reportLength);

        public override string ToString() =>
            $"{ReportId}, {LinkCollection}, Link: {{{LinkUsageAndPage}}}, Usage: {{{UsageAndPage}}}";
    }
}