GtkSharp/gtk/Application.cs

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// GTK.Application.cs - GTK Main Event Loop class implementation
//
// Author: Mike Kestner <mkestner@speakeasy.net>
//
// Copyright (c) 2001 Mike Kestner
//
// 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 Gtk {
using System;
using System.Runtime.InteropServices;
using Gdk;
public class Application {
//
// Disables creation of instances.
//
private Application ()
{
}
static Application ()
{
if (!GLib.Thread.Supported)
GLib.Thread.Init ();
}
[DllImport("libgtk-win32-2.0-0.dll")]
static extern void gtk_init (ref int argc, ref IntPtr argv);
[DllImport("libgtk-win32-2.0-0.dll")]
static extern bool gtk_init_check (ref int argc, ref IntPtr argv);
static void SetPrgname ()
{
GLib.Global.ProgramName = System.IO.Path.GetFileNameWithoutExtension (Environment.GetCommandLineArgs () [0]);
}
public static void Init ()
{
SetPrgname ();
IntPtr argv = new IntPtr(0);
int argc = 0;
gtk_init (ref argc, ref argv);
}
static bool do_init (string progname, ref string[] args, bool check)
{
SetPrgname ();
bool res = false;
string[] progargs = new string[args.Length + 1];
progargs[0] = progname;
args.CopyTo (progargs, 1);
GLib.Argv argv = new GLib.Argv (progargs);
IntPtr buf = argv.Handle;
int argc = progargs.Length;
if (check)
res = gtk_init_check (ref argc, ref buf);
else
gtk_init (ref argc, ref buf);
if (buf != argv.Handle)
throw new Exception ("init returned new argv handle");
// copy back the resulting argv, minus argv[0], which we're
// not interested in.
if (argc <= 1)
args = new string[0];
else {
progargs = argv.GetArgs (argc);
args = new string[argc - 1];
Array.Copy (progargs, 1, args, 0, argc - 1);
}
return res;
}
public static void Init (string progname, ref string[] args)
{
do_init (progname, ref args, false);
}
public static bool InitCheck (string progname, ref string[] args)
{
return do_init (progname, ref args, true);
}
[DllImport("libgtk-win32-2.0-0.dll")]
static extern void gtk_main ();
public static void Run ()
{
gtk_main ();
}
[DllImport("libgtk-win32-2.0-0.dll")]
static extern bool gtk_events_pending ();
public static bool EventsPending ()
{
return gtk_events_pending ();
}
[DllImport("libgtk-win32-2.0-0.dll")]
static extern void gtk_main_iteration ();
[DllImport("libgtk-win32-2.0-0.dll")]
static extern bool gtk_main_iteration_do (bool blocking);
public static void RunIteration ()
{
gtk_main_iteration ();
}
public static bool RunIteration (bool blocking)
{
return gtk_main_iteration_do (blocking);
}
[DllImport("libgtk-win32-2.0-0.dll")]
static extern void gtk_main_quit ();
public static void Quit ()
{
gtk_main_quit ();
}
[DllImport("libgtk-win32-2.0-0.dll")]
static extern IntPtr gtk_get_current_event ();
public static Gdk.Event CurrentEvent {
get {
return Gdk.Event.GetEvent (gtk_get_current_event ());
}
}
internal class InvokeCB {
EventHandler d;
object sender;
EventArgs args;
internal InvokeCB (EventHandler d)
{
this.d = d;
args = EventArgs.Empty;
sender = this;
}
internal InvokeCB (EventHandler d, object sender, EventArgs args)
{
this.d = d;
this.args = args;
this.sender = sender;
}
internal bool Invoke ()
{
d (sender, args);
return false;
}
}
public static void Invoke (EventHandler d)
{
InvokeCB icb = new InvokeCB (d);
GLib.Timeout.Add (0, new GLib.TimeoutHandler (icb.Invoke));
}
public static void Invoke (object sender, EventArgs args, EventHandler d)
{
InvokeCB icb = new InvokeCB (d, sender, args);
GLib.Timeout.Add (0, new GLib.TimeoutHandler (icb.Invoke));
}
}
}