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Glyph.cs

//
// Mono.Cairo.Glyph.cs
//
// Authors: Duncan Mak (duncan@ximian.com)
//          Hisham Mardam Bey (hisham.mardambey@gmail.com)
//
// (C) Ximian, Inc. 2003
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// 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 Cairo
{
      [StructLayout(LayoutKind.Sequential)]
      public struct Glyph
      {
            long index;
            double x;
            double y;
            
            public Glyph (long index, double x, double y)
            {
                  this.index = index;
                  this.x = x;
                  this.y = y;
            }
            
            public long Index {
                  get { return index; }
                  set { index = value; }
            }
            
            public double X {
                  get { return x; }
                  set { x = value; }
            }
            
            public double Y {
                  get { return y; }
                  set { y = value; }
            }

            public override bool Equals (object obj)
            {
                  if (obj is Glyph)
                        return this == (Glyph)obj;
                  return false;
            }

            public override int GetHashCode ()
            {
                  return (int) Index ^ (int) X ^ (int) Y;
            }

            internal static IntPtr GlyphsToIntPtr (Glyph[] glyphs)
            {
                  int size = Marshal.SizeOf (glyphs[0]);
                  IntPtr dest = Marshal.AllocHGlobal (size * glyphs.Length);
                  int pos = dest.ToInt32 ();
                  for (int i = 0; i < glyphs.Length; i++, pos += size)
                        Marshal.StructureToPtr (glyphs[i], (IntPtr) pos, false);
                  return dest;
            }

            public static bool operator == (Glyph glyph, Glyph other)
            {
                  return glyph.Index == other.Index && glyph.X == other.X && glyph.Y == other.Y;
            }

            public static bool operator != (Glyph glyph, Glyph other)
            {
                  return !(glyph == other);
            }
      }
}

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