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DeviceObjectId.cs
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79 lines (69 loc) · 2.84 KB
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// Copyright (c) 2010-2014 SharpDX - Alexandre Mutel
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Runtime.InteropServices;
namespace SharpDX.DirectInput
{
[StructLayout(LayoutKind.Sequential, Size = 4)]
public partial struct DeviceObjectId
{
private int _rawType;
private const int InstanceNumberMax = 0xFFFF - 1;
private const int AnyInstanceMask = 0x00FFFF00;
public DeviceObjectId(DeviceObjectTypeFlags typeFlags, int instanceNumber) : this()
{
// Clear anyInstance flags and use instanceNumber
_rawType = ((int)typeFlags & ~AnyInstanceMask) | ((instanceNumber < 0 | instanceNumber > InstanceNumberMax) ? 0 : ((instanceNumber & 0xFFFF) << 8));
}
public DeviceObjectTypeFlags Flags
{
get
{
return (DeviceObjectTypeFlags) (_rawType & ~AnyInstanceMask);
}
}
public int InstanceNumber
{
get { return (_rawType >> 8) & 0xFFFF; }
}
public static explicit operator int(DeviceObjectId type)
{
return type._rawType;
}
public bool Equals(DeviceObjectId other)
{
return other._rawType == _rawType;
}
public override bool Equals(object obj)
{
if (ReferenceEquals(null, obj)) return false;
if (obj.GetType() != typeof (DeviceObjectId)) return false;
return Equals((DeviceObjectId) obj);
}
public override int GetHashCode()
{
return _rawType;
}
public override string ToString()
{
return string.Format(System.Globalization.CultureInfo.InvariantCulture, "Flags: {0} InstanceNumber: {1} RawId: 0x{2:X8}", Flags, InstanceNumber, _rawType);
}
}
}