1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135
|
// Opaque .cs - Opaque struct wrapper implementation
//
// Authors: Bob Smith <bob@thestuff.net>
// Mike Kestner <mkestner@speakeasy.net>
// Rachel Hestilow <hestilow@ximian.com>
//
// Copyright (c) 2001 Bob Smith
// Copyright (c) 2001 Mike Kestner
// Copyright (c) 2002 Rachel Hestilow
// Copyright (c) 2004 Novell, Inc.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the Lesser GNU General
// Public License as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
namespace GLib {
using System;
public class Opaque : IWrapper, IDisposable {
IntPtr _obj;
bool owned;
public static Opaque GetOpaque (IntPtr o, Type type, bool owned)
{
if (o == IntPtr.Zero)
return null;
Opaque opaque = (Opaque)Activator.CreateInstance (type, new object[] { o });
if (owned) {
if (opaque.owned) {
// The constructor took a Ref it shouldn't have, so undo it
opaque.Unref (o);
}
opaque.owned = true;
} else
opaque = opaque.Copy (o);
return opaque;
}
public Opaque ()
{
owned = true;
}
public Opaque (IntPtr raw)
{
owned = false;
Raw = raw;
}
protected IntPtr Raw {
get {
return _obj;
}
set {
if (_obj != IntPtr.Zero) {
Unref (_obj);
if (owned)
Free (_obj);
}
_obj = value;
if (_obj != IntPtr.Zero) {
Ref (_obj);
}
}
}
public virtual void Dispose ()
{
Raw = IntPtr.Zero;
GC.SuppressFinalize (this);
}
// These take an IntPtr arg so we don't get conflicts if we need
// to have an "[Obsolete] public void Ref ()"
protected virtual void Ref (IntPtr raw) {}
protected virtual void Unref (IntPtr raw) {}
protected virtual void Free (IntPtr raw) {}
protected virtual Opaque Copy (IntPtr raw)
{
return this;
}
public IntPtr Handle {
get {
return _obj;
}
}
public IntPtr OwnedCopy {
get {
Opaque result = Copy (Handle);
result.Owned = false;
return result.Handle;
}
}
public bool Owned {
get {
return owned;
}
set {
owned = value;
}
}
public override bool Equals (object o)
{
if (!(o is Opaque))
return false;
return (Handle == ((Opaque) o).Handle);
}
public override int GetHashCode ()
{
return Handle.GetHashCode ();
}
}
}
|