1 files changed, 116 insertions, 0 deletions
diff --git a/libs/glibmm2/glibmm/class.cc b/libs/glibmm2/glibmm/class.cc
new file mode 100644
index 0000000000..ff4a671d8d
--- /dev/null
+++ b/libs/glibmm2/glibmm/class.cc
@@ -0,0 +1,116 @@
+// -*- c++ -*-
+/* $Id$ */
+
+/* Copyright (C) 1998-2002 The gtkmm Development Team
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <glibmm/class.h>
+#include <glibmm/property.h>
+#include <glibmm/ustring.h>
+#include <glibmm/utility.h>
+
+
+namespace Glib
+{
+
+void Class::register_derived_type(GType base_type)
+{
+  if(gtype_)
+    return; // already initialized
+
+  GTypeQuery base_query = { 0, 0, 0, 0, };
+  g_type_query(base_type, &base_query);
+
+  const GTypeInfo derived_info =
+  {
+    base_query.class_size,
+    0, // base_init
+    0, // base_finalize
+    class_init_func_,
+    0, // class_finalize
+    0, // class_data
+    base_query.instance_size,
+    0, // n_preallocs
+    0, // instance_init
+    0, // value_table
+  };
+
+  Glib::ustring derived_name = "gtkmm__";
+  derived_name += base_query.type_name;
+
+  gtype_ = g_type_register_static(base_type, derived_name.c_str(), &derived_info, GTypeFlags(0));
+}
+
+GType Class::clone_custom_type(const char* custom_type_name) const
+{
+  std::string full_name ("gtkmm__CustomObject_");
+  Glib::append_canonical_typename(full_name, custom_type_name);
+
+  GType custom_type = g_type_from_name(full_name.c_str());
+
+  if(!custom_type)
+  {
+    g_return_val_if_fail(gtype_ != 0, 0);
+
+    // Cloned custom types derive from the wrapper's parent type,
+    // so that g_type_class_peek_parent() works correctly.
+    const GType base_type = g_type_parent(gtype_);
+
+    GTypeQuery base_query = { 0, 0, 0, 0, };
+    g_type_query(base_type, &base_query);
+
+    const GTypeInfo derived_info =
+    {
+      base_query.class_size,
+      0, // base_init
+      0, // base_finalize
+      &Class::custom_class_init_function,
+      0, // class_finalize
+      this, // class_data
+      base_query.instance_size,
+      0, // n_preallocs
+      0, // instance_init
+      0, // value_table
+    };
+
+    custom_type = g_type_register_static(
+        base_type, full_name.c_str(), &derived_info, GTypeFlags(0));
+  }
+
+  return custom_type;
+}
+
+// static
+void Class::custom_class_init_function(void* g_class, void* class_data)
+{
+  // The class_data pointer is set to 'this' by clone_custom_type().
+  const Class *const self = static_cast<Class*>(class_data);
+
+  g_return_if_fail(self->class_init_func_ != 0);
+
+  // Call the wrapper's class_init_function() to redirect
+  // the vfunc and default signal handler callbacks.
+  (*self->class_init_func_)(g_class, 0);
+
+  GObjectClass *const gobject_class = static_cast<GObjectClass*>(g_class);
+
+  gobject_class->get_property = &Glib::custom_get_property_callback;
+  gobject_class->set_property = &Glib::custom_set_property_callback;
+}
+
+} // namespace Glib
+