mirror of
https://github.com/Ryujinx/GtkSharp.git
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249 lines
5.7 KiB
C#
249 lines
5.7 KiB
C#
// ValueArray.cs - ValueArray wrapper implementation
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//
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// Authors: Mike Kestner <mkestner@ximian.com>
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//
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// Copyright (c) 2003 Novell, Inc.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 2 of the Lesser GNU General
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// Public License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this program; if not, write to the
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// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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// Boston, MA 02111-1307, USA.
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namespace GLib {
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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public class ValueArray : IDisposable, ICollection, ICloneable, IWrapper {
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private IntPtr handle = IntPtr.Zero;
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static private IList<IntPtr> PendingFrees = new List<IntPtr> ();
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static private bool idle_queued = false;
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[DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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static extern IntPtr g_value_array_new (uint n_preallocs);
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public ValueArray (uint n_preallocs)
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{
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handle = g_value_array_new (n_preallocs);
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}
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public ValueArray (IntPtr raw)
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{
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handle = raw;
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}
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~ValueArray ()
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{
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Dispose (false);
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}
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// IDisposable
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public void Dispose ()
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{
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Dispose (true);
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GC.SuppressFinalize (this);
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}
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[DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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static extern void g_value_array_free (IntPtr raw);
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void Dispose (bool disposing)
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{
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if (Handle == IntPtr.Zero)
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return;
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lock (PendingFrees) {
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PendingFrees.Add (handle);
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if (! idle_queued) {
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Timeout.Add (50, new TimeoutHandler (PerformFrees));
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idle_queued = true;
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}
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}
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handle = IntPtr.Zero;
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}
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static bool PerformFrees ()
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{
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IntPtr[] handles;
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lock (PendingFrees) {
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idle_queued = false;
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handles = new IntPtr [PendingFrees.Count];
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PendingFrees.CopyTo (handles, 0);
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PendingFrees.Clear ();
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}
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foreach (IntPtr h in handles)
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g_value_array_free (h);
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return false;
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}
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public IntPtr Handle {
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get {
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return handle;
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}
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}
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struct NativeStruct {
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public uint n_values;
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public IntPtr values;
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public uint n_prealloced;
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}
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NativeStruct Native {
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get { return (NativeStruct) Marshal.PtrToStructure (Handle, typeof(NativeStruct)); }
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}
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public IntPtr ArrayPtr {
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get { return Native.values; }
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}
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[DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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static extern void g_value_array_append (IntPtr raw, ref GLib.Value val);
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public void Append (GLib.Value val)
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{
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g_value_array_append (Handle, ref val);
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}
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[DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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static extern void g_value_array_insert (IntPtr raw, uint idx, ref GLib.Value val);
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public void Insert (uint idx, GLib.Value val)
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{
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g_value_array_insert (Handle, idx, ref val);
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}
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[DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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static extern void g_value_array_prepend (IntPtr raw, ref GLib.Value val);
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public void Prepend (GLib.Value val)
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{
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g_value_array_prepend (Handle, ref val);
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}
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[DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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static extern void g_value_array_remove (IntPtr raw, uint idx);
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public void Remove (uint idx)
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{
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g_value_array_remove (Handle, idx);
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}
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// ICollection
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public int Count {
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get { return (int) Native.n_values; }
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}
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[DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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static extern IntPtr g_value_array_get_nth (IntPtr raw, uint idx);
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public object this [int index] {
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get {
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IntPtr raw_val = g_value_array_get_nth (Handle, (uint) index);
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return Marshal.PtrToStructure (raw_val, typeof (GLib.Value));
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}
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}
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// Synchronization could be tricky here. Hmm.
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public bool IsSynchronized {
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get { return false; }
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}
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public object SyncRoot {
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get { return null; }
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}
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public void CopyTo (Array array, int index)
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{
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if (array == null)
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throw new ArgumentNullException ("Array can't be null.");
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if (index < 0)
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throw new ArgumentOutOfRangeException ("Index must be greater than 0.");
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if (index + Count < array.Length)
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throw new ArgumentException ("Array not large enough to copy into starting at index.");
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for (int i = 0; i < Count; i++)
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((IList) array) [index + i] = this [i];
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}
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private class ListEnumerator : IEnumerator
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{
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private int current = -1;
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private ValueArray vals;
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public ListEnumerator (ValueArray vals)
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{
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this.vals = vals;
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}
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public object Current {
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get {
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if (current == -1)
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return null;
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return vals [current];
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}
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}
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public bool MoveNext ()
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{
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if (++current >= vals.Count) {
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current = -1;
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return false;
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}
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return true;
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}
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public void Reset ()
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{
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current = -1;
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}
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}
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// IEnumerable
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public IEnumerator GetEnumerator ()
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{
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return new ListEnumerator (this);
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}
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[DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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static extern IntPtr g_value_array_copy (IntPtr raw);
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// ICloneable
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public object Clone ()
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{
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return new ValueArray (g_value_array_copy (Handle));
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}
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[DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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static extern IntPtr g_value_array_get_type ();
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public static GLib.GType GType {
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get {
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return new GLib.GType (g_value_array_get_type ());
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}
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}
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}
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}
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