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Add support for a GTypeName attribute to get correct native/managed type mappings

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This requires yet another patch to Gtk# trunk, also update
the list of patches again.
This commit is contained in:
Sebastian Dröge 2009-05-13 14:35:59 +02:00
parent a3032c0565
commit 1242478731
2 changed files with 72 additions and 0 deletions
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4
README
View file

@ -2,6 +2,10 @@ To build this Gtk# from trunk is required and the following patches:
http://bugzilla.novell.com/show_bug.cgi?id=323372
http://bugzilla.novell.com/show_bug.cgi?id=501685
http://bugzilla.novell.com/show_bug.cgi?id=497667
http://bugzilla.novell.com/show_bug.cgi?id=503048
http://bugzilla.novell.com/show_bug.cgi?id=503060
http://bugzilla.novell.com/show_bug.cgi?id=499900
If you're using Mono < 2.4 you also need to apply:
http://bugzilla.novell.com/show_bug.cgi?id=477396

68
gstreamer-sharp/Application.cs
View file

@ -7,12 +7,34 @@
//
// Copyright (C) 2002 Alp Toker
// Copyright (C) 2006 Novell, Inc.
// Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
//
using System;
using System.Reflection;
using System.IO;
using System.Runtime.InteropServices;
namespace Gst {
[AttributeUsage (AttributeTargets.Enum | AttributeTargets.Class | AttributeTargets.Struct) ]
public sealed class GTypeNameAttribute : Attribute {
string type_name;
public GTypeNameAttribute (string gtype_name) {
this.type_name = gtype_name;
}
public string TypeName {
get {
return type_name;
}
set {
type_name = value;
}
}
}
public static class Application {
public static void Init() {
IntPtr argv = new IntPtr (0);
@ -34,7 +56,53 @@ namespace Gst {
gst_deinit();
}
private static System.Type GstTypeMapping (GLib.GType gtype, string gtype_name) {
Assembly[] assemblies = (Assembly[]) AppDomain.CurrentDomain.GetAssemblies ().Clone ();
foreach (Assembly asm in assemblies) {
Type[] ts = asm.GetTypes ();
foreach (Type t in ts) {
if (t.IsDefined (typeof (Gst.GTypeNameAttribute), false)) {
GTypeNameAttribute gattr = (GTypeNameAttribute) Attribute.GetCustomAttribute (t, typeof (GTypeNameAttribute), false);
if (gtype_name.Equals (gattr.TypeName)) {
return t;
}
}
}
}
foreach (Assembly asm in assemblies) {
foreach (AssemblyName ref_name in asm.GetReferencedAssemblies ()) {
string asm_dir = Path.GetDirectoryName (asm.Location);
try {
Assembly ref_asm;
if (File.Exists (Path.Combine (asm_dir, ref_name.Name + ".dll")))
ref_asm = Assembly.LoadFrom (Path.Combine (asm_dir, ref_name.Name + ".dll"));
else
ref_asm = Assembly.Load (ref_name);
Type[] ts = asm.GetTypes ();
foreach (Type t in ts) {
if (t.IsDefined (typeof (Gst.GTypeNameAttribute), false)) {
GTypeNameAttribute gattr = (GTypeNameAttribute) Attribute.GetCustomAttribute (t, typeof (GTypeNameAttribute), false);
if (gtype_name.Equals (gattr.TypeName)) {
return t;
}
}
}
} catch (Exception) {
/* Failure to load a referenced assembly is not an error */
}
}
}
return null;
}
private static void RegisterManagedTypes() {
GLib.GType.GTypeMapping += GstTypeMapping;
GLib.GType t;
t = Gst.Fraction.GType;