mirror of
https://github.com/Ryujinx/GtkSharp.git
synced 2025-11-04 13:24:48 +00:00
2bbee634d0
Add a sample to illustrate the point of having a GLibSynchronizationContext, but with the async/await code ifdef'ed out because we don't require Mono 3.0 for now. Instead, provide a crude equivalent of what would be generated by the compiler, to show that it works.
110 lines
2.6 KiB
C#
110 lines
2.6 KiB
C#
// AsyncSample.cs - Async call using SynchronizationContext
|
|
//
|
|
// Author: Bertrand Lorentz <bertrand.lorentz@gmail.com>
|
|
//
|
|
// Copyright (c) 2012 Bertrand Lorentz
|
|
//
|
|
// 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 Samples
|
|
{
|
|
using Gtk;
|
|
using Gdk;
|
|
using System;
|
|
using System.Threading;
|
|
|
|
public class AsyncSample
|
|
{
|
|
static Label msg;
|
|
static Label label;
|
|
static Button button;
|
|
static int count;
|
|
static Thread main_thread;
|
|
|
|
public static int Main (string[] args)
|
|
{
|
|
Application.Init ();
|
|
main_thread = Thread.CurrentThread;
|
|
|
|
Gtk.Window win = new Gtk.Window ("Gtk# Hello Async World");
|
|
win.DeleteEvent += new DeleteEventHandler (Window_Delete);
|
|
label = new Label ("Doing nothing");
|
|
msg = new Label ("Do Work");
|
|
button = new Button (msg);
|
|
button.Clicked += delegate { DoWork (); };
|
|
VBox box = new VBox (true, 8);
|
|
box.Add (label);
|
|
box.Add (button);
|
|
win.Add (box);
|
|
win.BorderWidth = 4;
|
|
win.ShowAll ();
|
|
|
|
Application.Run ();
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if NET_4_5 // Enable this when we require Mono 3.0
|
|
static async void DoWork ()
|
|
{
|
|
label.Text = "Starting Work";
|
|
|
|
int res = await DoLongOperation ();
|
|
|
|
CheckThread ("Updating UI");
|
|
label.Text = String.Format ("Work Done ({0})", res);
|
|
}
|
|
#else
|
|
static void DoWork ()
|
|
{
|
|
label.Text = "Starting Work";
|
|
|
|
var sc = SynchronizationContext.Current;
|
|
ThreadPool.QueueUserWorkItem (delegate {
|
|
int res = DoLongOperation ();
|
|
sc.Post (delegate {
|
|
CheckThread ("Updating UI");
|
|
label.Text = String.Format ("Work Done ({0})", res);
|
|
}, null);
|
|
});
|
|
}
|
|
#endif
|
|
|
|
static int DoLongOperation ()
|
|
{
|
|
count++;
|
|
CheckThread ("Doing long operation");
|
|
Thread.Sleep (2000);
|
|
return count;
|
|
}
|
|
|
|
static void CheckThread (string msg)
|
|
{
|
|
if (Thread.CurrentThread == main_thread) {
|
|
Console.WriteLine ("In main thread - {0}", msg);
|
|
} else {
|
|
Console.WriteLine ("Not in main thread - {0}", msg);
|
|
}
|
|
}
|
|
|
|
static void Window_Delete (object obj, DeleteEventArgs args)
|
|
{
|
|
Application.Quit ();
|
|
args.RetVal = true;
|
|
}
|
|
}
|
|
}
|
|
|