118 lines
3.3 KiB
C++
118 lines
3.3 KiB
C++
// -*- c++ -*-
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/* $Id: class.cc,v 1.7 2006/10/04 12:04:05 murrayc Exp $ */
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/* Copyright (C) 1998-2002 The gtkmm Development Team
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <glibmm/class.h>
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#include <glibmm/property.h>
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#include <glibmm/ustring.h>
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#include <glibmm/utility.h>
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namespace Glib
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{
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void Class::register_derived_type(GType base_type)
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{
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if(gtype_)
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return; // already initialized
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GTypeQuery base_query = { 0, 0, 0, 0, };
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g_type_query(base_type, &base_query);
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const GTypeInfo derived_info =
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{
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base_query.class_size,
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0, // base_init
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0, // base_finalize
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class_init_func_,
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0, // class_finalize
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0, // class_data
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base_query.instance_size,
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0, // n_preallocs
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0, // instance_init
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0, // value_table
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};
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Glib::ustring derived_name = "gtkmm__";
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derived_name += base_query.type_name;
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gtype_ = g_type_register_static(base_type, derived_name.c_str(), &derived_info, GTypeFlags(0));
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}
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GType Class::clone_custom_type(const char* custom_type_name) const
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{
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std::string full_name ("gtkmm__CustomObject_");
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Glib::append_canonical_typename(full_name, custom_type_name);
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GType custom_type = g_type_from_name(full_name.c_str());
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if(!custom_type)
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{
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g_return_val_if_fail(gtype_ != 0, 0);
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// Cloned custom types derive from the wrapper's parent type,
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// so that g_type_class_peek_parent() works correctly.
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const GType base_type = g_type_parent(gtype_);
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GTypeQuery base_query = { 0, 0, 0, 0, };
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g_type_query(base_type, &base_query);
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const GTypeInfo derived_info =
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{
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base_query.class_size,
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0, // base_init
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0, // base_finalize
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&Class::custom_class_init_function,
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0, // class_finalize
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this, // class_data
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base_query.instance_size,
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0, // n_preallocs
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0, // instance_init
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0, // value_table
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};
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custom_type = g_type_register_static(
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base_type, full_name.c_str(), &derived_info, GTypeFlags(0));
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}
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return custom_type;
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}
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// static
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void Class::custom_class_init_function(void* g_class, void* class_data)
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{
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// The class_data pointer is set to 'this' by clone_custom_type().
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const Class *const self = static_cast<Class*>(class_data);
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g_return_if_fail(self->class_init_func_ != 0);
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// Call the wrapper's class_init_function() to redirect
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// the vfunc and default signal handler callbacks.
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(*self->class_init_func_)(g_class, 0);
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#ifdef GLIBMM_PROPERTIES_ENABLED
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GObjectClass *const gobject_class = static_cast<GObjectClass*>(g_class);
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gobject_class->get_property = &Glib::custom_get_property_callback;
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gobject_class->set_property = &Glib::custom_set_property_callback;
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#endif //GLIBMM_PROPERTIES_ENABLED
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}
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} // namespace Glib
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