The GtkRadiant sources as originally released under the GPL license.

plugins/entity/namedentity.h

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+/*
+Copyright (C) 2001-2006, William Joseph.
+All Rights Reserved.
+
+This file is part of GtkRadiant.
+
+GtkRadiant is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+GtkRadiant 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GtkRadiant; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#if !defined(INCLUDED_NAMEDENTITY_H)
+#define INCLUDED_NAMEDENTITY_H
+
+#include "entitylib.h"
+#include "eclasslib.h"
+#include "generic/callback.h"
+#include "nameable.h"
+
+#include <set>
+
+class NameCallbackSet
+{
+  typedef std::set<NameCallback> NameCallbacks;
+  NameCallbacks m_callbacks;
+public:
+  void insert(const NameCallback& callback)
+  {
+    m_callbacks.insert(callback);
+  }
+  void erase(const NameCallback& callback)
+  {
+    m_callbacks.erase(callback);
+  }
+  void changed(const char* name) const
+  {
+    for(NameCallbacks::const_iterator i = m_callbacks.begin(); i != m_callbacks.end(); ++i)
+    {
+      (*i)(name);
+    }
+  }
+};
+
+class NamedEntity : public Nameable
+{
+  EntityKeyValues& m_entity;
+  NameCallbackSet m_changed;
+  CopiedString m_name;
+public:
+  NamedEntity(EntityKeyValues& entity) : m_entity(entity)
+  {
+  }
+  const char* name() const
+  {
+    if(string_empty(m_name.c_str()))
+    {
+      return m_entity.getEntityClass().name();
+    }
+    return m_name.c_str();
+  }
+  void attach(const NameCallback& callback)
+  {
+    m_changed.insert(callback);
+  }
+  void detach(const NameCallback& callback)
+  {
+    m_changed.erase(callback);
+  }
+
+  void identifierChanged(const char* value)
+  {
+    if(string_empty(value))
+    {
+      m_changed.changed(m_entity.getEntityClass().name());
+    }
+    else
+    {
+      m_changed.changed(value);
+    }
+    m_name = value;
+  }
+  typedef MemberCaller1<NamedEntity, const char*, &NamedEntity::identifierChanged> IdentifierChangedCaller;
+};
+
+class RenderableNamedEntity : public OpenGLRenderable
+{
+  const NamedEntity& m_named;
+  const Vector3& m_position;
+public:
+  RenderableNamedEntity(const NamedEntity& named, const Vector3& position)
+    : m_named(named), m_position(position)
+  {
+  }
+  void render(RenderStateFlags state) const
+  {
+    glRasterPos3fv(vector3_to_array(m_position));
+    GlobalOpenGL().drawString(m_named.name());
+  }
+};
+
+
+
+#endif