7cdacd91af
* glib/Value.cs: added StructLayout attribute as requested by the runtime. Now --aot works again. svn path=/trunk/gtk-sharp/; revision=25128
726 lines
18 KiB
C#
Executable file
726 lines
18 KiB
C#
Executable file
// GLib.Value.cs - GLib Value class implementation
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//
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// Author: Mike Kestner <mkestner@speakeasy.net>
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//
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// (c) 2001 Mike Kestner, (c) 2003 Novell, Inc.
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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.Runtime.InteropServices;
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using GLibSharp;
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/// <summary>
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/// Value Class
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/// </summary>
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///
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/// <remarks>
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/// An arbitrary data type similar to a CORBA Any which is used
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/// to get and set properties on Objects.
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/// </remarks>
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[StructLayout (LayoutKind.Sequential)]
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public class Value : IDisposable {
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IntPtr _val;
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bool needs_dispose = true;
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// Destructor is required since we are allocating unmanaged
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// heap resources.
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[DllImport("libglib-2.0-0.dll")]
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static extern void g_free (IntPtr mem);
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_value_unset (IntPtr mem);
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~Value ()
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{
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Dispose ();
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}
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static bool idle_queued;
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static Queue idle_queue = new Queue ();
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static bool DoDispose ()
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{
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IntPtr [] vals;
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lock (idle_queue){
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vals = new IntPtr [idle_queue.Count];
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idle_queue.CopyTo (vals, 0);
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idle_queue.Clear ();
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}
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lock (typeof (Value))
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idle_queued = false;
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foreach (IntPtr v in vals) {
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if (v == IntPtr.Zero)
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continue;
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g_value_unset (v);
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g_free (v);
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}
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return false;
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}
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public void Dispose () {
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if (_val != IntPtr.Zero && needs_dispose) {
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lock (idle_queue) {
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idle_queue.Enqueue (_val);
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lock (typeof (Value)){
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if (!idle_queued) {
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Idle.Add (new IdleHandler (DoDispose));
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idle_queued = true;
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}
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}
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}
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_val = IntPtr.Zero;
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}
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if (buf != IntPtr.Zero) {
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Marshal.FreeHGlobal (buf);
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buf = IntPtr.Zero;
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}
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}
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// import the glue function to allocate values on heap
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[DllImport("glibsharpglue")]
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static extern IntPtr gtksharp_value_create(IntPtr type);
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[DllImport("glibsharpglue")]
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static extern IntPtr gtksharp_value_create_from_property(IntPtr obj, string name);
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// Constructor to wrap a raw GValue ref. We need the dummy param
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// to distinguish this ctor from the TypePointer ctor.
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public Value (IntPtr val, IntPtr dummy)
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{
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_val = val;
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needs_dispose = false;
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}
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a new empty value that can be used
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/// to receive "out" GValue parameters.
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/// </remarks>
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public Value () {
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_val = gtksharp_value_create (GType.Invalid.Val);
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}
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a new empty initialized value that can be used
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/// to receive "out" GValue parameters.
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/// </remarks>
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public Value (GLib.GType gtype) {
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_val = gtksharp_value_create (gtype.Val);
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}
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a Value corresponding to the type of the
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/// specified property.
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/// </remarks>
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public Value (IntPtr obj, string prop_name)
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{
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_val = gtksharp_value_create_from_property (obj, prop_name);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_value_set_boolean (IntPtr val, bool data);
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a Value from a specified boolean.
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/// </remarks>
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public Value (bool val)
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{
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_val = gtksharp_value_create(GType.Boolean.Val);
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g_value_set_boolean (_val, val);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_value_set_boxed (IntPtr val, IntPtr data);
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/*
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a Value from a specified boxed type.
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/// </remarks>
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public Value (GLib.Boxed val)
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{
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_val = gtksharp_value_create(GType.Boxed);
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//g_value_set_boxed (_val, val.Handle);
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}
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public Value (IntPtr obj, string prop_name, Boxed val)
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{
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_val = gtksharp_value_create_from_property (obj, prop_name);
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//g_value_set_boxed (_val, val.Handle);
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}
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*/
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public Value (IntPtr obj, string prop_name, Opaque val)
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{
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_val = gtksharp_value_create_from_property (obj, prop_name);
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g_value_set_boxed (_val, val.Handle);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_value_set_double (IntPtr val, double data);
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a Value from a specified double.
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/// </remarks>
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public Value (double val)
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{
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_val = gtksharp_value_create (GType.Double.Val);
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g_value_set_double (_val, val);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_value_set_float (IntPtr val, float data);
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a Value from a specified float.
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/// </remarks>
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public Value (float val)
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{
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_val = gtksharp_value_create (GType.Float.Val);
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g_value_set_float (_val, val);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_value_set_int (IntPtr val, int data);
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a Value from a specified integer.
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/// </remarks>
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public Value (int val)
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{
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_val = gtksharp_value_create (GType.Int.Val);
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g_value_set_int (_val, val);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_value_set_object (IntPtr val, IntPtr data);
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a Value from a specified object.
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/// </remarks>
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public Value (GLib.Object val)
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{
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_val = gtksharp_value_create (val.GetGType ().Val);
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g_value_set_object (_val, val.Handle);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_value_set_pointer (IntPtr val, IntPtr data);
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a Value from a specified pointer.
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/// </remarks>
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public Value (IntPtr val)
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{
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_val = gtksharp_value_create (GType.Pointer.Val);
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g_value_set_pointer (_val, val);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_value_set_string (IntPtr val, string data);
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a Value from a specified string.
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/// </remarks>
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public Value (string val)
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{
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_val = gtksharp_value_create (GType.String.Val);
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g_value_set_string (_val, val);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_value_set_uint (IntPtr val, uint data);
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a Value from a specified uint.
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/// </remarks>
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public Value (uint val)
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{
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_val = gtksharp_value_create (GType.UInt.Val);
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g_value_set_uint (_val, val);
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}
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a Value from a specified ushort.
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/// </remarks>
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public Value (ushort val)
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{
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_val = gtksharp_value_create (GType.UInt.Val);
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g_value_set_uint (_val, val);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_value_set_enum (IntPtr val, int data);
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_value_set_flags (IntPtr val, uint data);
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[DllImport("libgobject-2.0-0.dll")]
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static extern void g_value_set_char (IntPtr val, char data);
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a Value from a specified enum wrapper.
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/// </remarks>
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public Value (IntPtr obj, string prop_name, EnumWrapper wrap)
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{
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_val = gtksharp_value_create_from_property (obj, prop_name);
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if (wrap.flags)
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g_value_set_flags (_val, (uint) (int) wrap);
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else
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g_value_set_enum (_val, (int) wrap);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern bool g_type_is_a (IntPtr type, IntPtr is_a_type);
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IntPtr buf = IntPtr.Zero;
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/// <summary>
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/// Value Constructor
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/// </summary>
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///
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/// <remarks>
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/// Constructs a Value from any object, including a managed
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/// type.
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/// </remarks>
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public Value (object obj)
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{
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GType type = TypeConverter.LookupType (obj.GetType ());
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if (type == GType.None) {
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_val = gtksharp_value_create (ManagedValue.GType.Val);
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} else if (type == GType.Object) {
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_val = gtksharp_value_create (((GLib.Object) obj).GetGType ().Val);
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} else {
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_val = gtksharp_value_create (type.Val);
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}
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if (type == GType.None)
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g_value_set_boxed (_val, ManagedValue.WrapObject (obj));
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else if (type == GType.String)
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g_value_set_string (_val, (string) obj);
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else if (type == GType.Boolean)
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g_value_set_boolean (_val, (bool) obj);
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else if (type == GType.Int)
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g_value_set_int (_val, (int) obj);
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else if (type == GType.Double)
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g_value_set_double (_val, (double) obj);
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else if (type == GType.Float)
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g_value_set_float (_val, (float) obj);
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else if (type == GType.Char)
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g_value_set_char (_val, (char) obj);
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else if (type == GType.UInt)
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g_value_set_uint (_val, (uint) obj);
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else if (type == GType.Object)
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g_value_set_object (_val, ((GLib.Object) obj).Handle);
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else if (type == GType.Pointer) {
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if (obj is IWrapper) {
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g_value_set_pointer (_val, ((IWrapper)obj).Handle);
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return;
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}
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buf = Marshal.AllocHGlobal (Marshal.SizeOf (obj.GetType()));
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Marshal.StructureToPtr (obj, buf, false);
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g_value_set_pointer (_val, buf);
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} else if (g_type_is_a (type.Val, GLib.GType.Boxed.Val)) {
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if (obj is IWrapper) {
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g_value_set_boxed (_val, ((IWrapper)obj).Handle);
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return;
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}
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buf = Marshal.AllocHGlobal (Marshal.SizeOf (obj.GetType()));
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Marshal.StructureToPtr (obj, buf, false);
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g_value_set_boxed (_val, buf);
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} else
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throw new Exception ("Unknown type");
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern bool g_value_get_boolean (IntPtr val);
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/// <summary>
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/// Value to Boolean Conversion
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/// </summary>
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///
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/// <remarks>
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/// Extracts a bool from a Value. Note, this method
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/// will produce an exception if the Value does not hold a
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/// boolean value.
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/// </remarks>
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public static explicit operator bool (Value val)
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{
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// FIXME: Insert an appropriate exception here if
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// _val.type indicates an error.
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return g_value_get_boolean (val._val);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern IntPtr g_value_get_boxed (IntPtr val);
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public static explicit operator GLib.Opaque (Value val)
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{
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return GLib.Opaque.GetOpaque (g_value_get_boxed (val._val));
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}
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/// <summary>
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/// Value to Boxed Conversion
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/// </summary>
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///
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/// <remarks>
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/// Extracts a boxed type from a Value. Note, this method
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/// will produce an exception if the Value does not hold a
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/// boxed type value.
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/// </remarks>
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public static explicit operator GLib.Boxed (Value val)
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{
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return new GLib.Boxed (g_value_get_boxed (val._val));
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern double g_value_get_double (IntPtr val);
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/// <summary>
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/// Value to Double Conversion
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/// </summary>
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///
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/// <remarks>
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/// Extracts a double from a Value. Note, this method
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/// will produce an exception if the Value does not hold a
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/// double value.
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/// </remarks>
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public static explicit operator double (Value val)
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{
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// FIXME: Insert an appropriate exception here if
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// _val.type indicates an error.
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return g_value_get_double (val._val);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern float g_value_get_float (IntPtr val);
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/// <summary>
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/// Value to Float Conversion
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/// </summary>
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///
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/// <remarks>
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/// Extracts a float from a Value. Note, this method
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/// will produce an exception if the Value does not hold a
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/// float value.
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/// </remarks>
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public static explicit operator float (Value val)
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{
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// FIXME: Insert an appropriate exception here if
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// _val.type indicates an error.
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return g_value_get_float (val._val);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern int g_value_get_int (IntPtr val);
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/// <summary>
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/// Value to Integer Conversion
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/// </summary>
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///
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/// <remarks>
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/// Extracts an int from a Value. Note, this method
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/// will produce an exception if the Value does not hold a
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/// integer value.
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/// </remarks>
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public static explicit operator int (Value val)
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{
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// FIXME: Insert an appropriate exception here if
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// _val.type indicates an error.
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return g_value_get_int (val._val);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern IntPtr g_value_get_object (IntPtr val);
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/// <summary>
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/// Value to Object Conversion
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/// </summary>
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///
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/// <remarks>
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/// Extracts an object from a Value. Note, this method
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/// will produce an exception if the Value does not hold a
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/// object value.
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/// </remarks>
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public static explicit operator GLib.Object (Value val)
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{
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// FIXME: Insert an appropriate exception here if
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// _val.type indicates an error.
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return GLib.Object.GetObject(g_value_get_object (val._val), true);
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}
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/// <summary>
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/// Value to Unresolved Object Conversion
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/// </summary>
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///
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/// <remarks>
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/// Extracts an object from a Value without looking up its wrapping
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/// class.
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/// Note, this method will produce an exception if the Value does
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/// not hold a object value.
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/// </remarks>
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public static explicit operator GLib.UnwrappedObject (Value val)
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{
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// FIXME: Insert an appropriate exception here if
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// _val.type indicates an error.
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return new UnwrappedObject(g_value_get_object (val._val));
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern IntPtr g_value_get_pointer (IntPtr val);
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/// <summary>
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/// Value to Pointer Conversion
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/// </summary>
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///
|
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/// <remarks>
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/// Extracts a pointer from a Value. Note, this method
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/// will produce an exception if the Value does not hold a
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/// pointer value.
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/// </remarks>
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public static explicit operator IntPtr (Value val)
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{
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// FIXME: Insert an appropriate exception here if
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// _val.type indicates an error.
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return g_value_get_pointer (val._val);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern IntPtr g_value_get_string (IntPtr val);
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/// <summary>
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/// Value to String Conversion
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/// </summary>
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///
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/// <remarks>
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|
/// Extracts a string from a Value. Note, this method
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/// will produce an exception if the Value does not hold a
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/// string value.
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/// </remarks>
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public static explicit operator String (Value val)
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{
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// FIXME: Insert an appropriate exception here if
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// _val.type indicates an error.
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IntPtr str = g_value_get_string (val._val);
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return str == IntPtr.Zero ? null : Marshal.PtrToStringAnsi (str);
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}
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[DllImport("libgobject-2.0-0.dll")]
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static extern uint g_value_get_uint (IntPtr val);
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/// <summary>
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/// Value to Unsigned Integer Conversion
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/// </summary>
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///
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/// <remarks>
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/// Extracts an uint from a Value. Note, this method
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|
/// will produce an exception if the Value does not hold a
|
|
/// unsigned integer value.
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/// </remarks>
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|
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public static explicit operator uint (Value val)
|
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{
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// FIXME: Insert an appropriate exception here if
|
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// _val.type indicates an error.
|
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return g_value_get_uint (val._val);
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|
}
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/// <summary>
|
|
/// Value to Unsigned Short Conversion
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|
/// </summary>
|
|
///
|
|
/// <remarks>
|
|
/// Extracts a ushort from a Value. Note, this method
|
|
/// will produce an exception if the Value does not hold a
|
|
/// unsigned integer value.
|
|
/// </remarks>
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|
|
public static explicit operator ushort (Value val)
|
|
{
|
|
// FIXME: Insert an appropriate exception here if
|
|
// _val.type indicates an error.
|
|
return (ushort) g_value_get_uint (val._val);
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|
}
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|
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[DllImport("libgobject-2.0-0.dll")]
|
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static extern int g_value_get_enum (IntPtr val);
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|
[DllImport("libgobject-2.0-0.dll")]
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static extern uint g_value_get_flags (IntPtr val);
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/// <summary>
|
|
/// Value to Enum Conversion
|
|
/// </summary>
|
|
///
|
|
/// <remarks>
|
|
/// Extracts an enum from a Value. Note, this method
|
|
/// will produce an exception if the Value does not hold an
|
|
/// enum value.
|
|
/// </remarks>
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|
|
|
public static explicit operator EnumWrapper (Value val)
|
|
{
|
|
// FIXME: Insert an appropriate exception here if
|
|
// _val.type indicates an error.
|
|
// FIXME: handle flags
|
|
return new EnumWrapper (g_value_get_enum (val._val), false);
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|
}
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|
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[DllImport("glibsharpglue")]
|
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static extern IntPtr gtksharp_value_get_value_type (IntPtr val);
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|
|
|
public object Val
|
|
{
|
|
get {
|
|
GLib.GType type = new GLib.GType (gtksharp_value_get_value_type (_val));
|
|
if (type == ManagedValue.GType) {
|
|
return ManagedValue.ObjectForWrapper (g_value_get_boxed (_val));
|
|
}
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|
|
|
if (type == GType.String)
|
|
return (string) this;
|
|
else if (type == GType.Boolean)
|
|
return (bool) this;
|
|
else if (type == GType.Int)
|
|
return (int) this;
|
|
else if (type == GType.Double)
|
|
return (double) this;
|
|
else if (type == GType.Float)
|
|
return (float) this;
|
|
else if (type == GType.Char)
|
|
return (char) this;
|
|
else if (type == GType.UInt)
|
|
return (uint) this;
|
|
else if (type == GType.Object)
|
|
return (GLib.Object) this;
|
|
else
|
|
throw new Exception ("Unknown type");
|
|
}
|
|
set {
|
|
GType type = GLibSharp.TypeConverter.LookupType (value.GetType());
|
|
if (type == GType.None)
|
|
g_value_set_boxed (_val, ManagedValue.WrapObject (value));
|
|
else if (type == GType.String)
|
|
g_value_set_string (_val, (string) value);
|
|
else if (type == GType.Boolean)
|
|
g_value_set_boolean (_val, (bool) value);
|
|
else if (type == GType.Int)
|
|
g_value_set_int (_val, (int) value);
|
|
else if (type == GType.Double)
|
|
g_value_set_double (_val, (double) value);
|
|
else if (type == GType.Float)
|
|
g_value_set_float (_val, (float) value);
|
|
else if (type == GType.Char)
|
|
g_value_set_char (_val, (char) value);
|
|
else if (type == GType.UInt)
|
|
g_value_set_uint (_val, (uint) value);
|
|
else if (type == GType.Object)
|
|
g_value_set_object (_val, ((GLib.Object) value).Handle);
|
|
else
|
|
throw new Exception ("Unknown type");
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Handle Property
|
|
/// </summary>
|
|
///
|
|
/// <remarks>
|
|
/// Read only. Accesses a pointer to the raw GValue.
|
|
/// </remarks>
|
|
|
|
public IntPtr Handle {
|
|
get {
|
|
return _val;
|
|
}
|
|
}
|
|
}
|
|
}
|