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glinsidelist.h

00001 /*--License:
00002         Kyra Sprite Engine
00003         Copyright Lee Thomason (Grinning Lizard Software) 2001-2002
00004         www.grinninglizard.com/kyra
00005         www.sourceforge.net/projects/kyra
00006 
00007         Kyra is provided under 2 licenses:
00008 
00009         - The GPL, with no additional restrictions.
00010         - The LGPL, provided you display the Kyra splash screen, described below.
00011 
00012 
00013 --- GPL License --
00014         This program is free software; you can redistribute it and/or
00015         modify it under the terms of the GNU General Public License
00016         as published by the Free Software Foundation; either version 2
00017         of the License, or (at your option) any later version.
00018 
00019         This program is distributed in the hope that it will be useful,
00020         but WITHOUT ANY WARRANTY; without even the implied warranty of
00021         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00022         GNU General Public License for more details.
00023 
00024         You should have received a copy of the GNU General Public License
00025         along with this program; if not, write to the Free Software
00026         Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00027 
00028         The full text of the license can be found in license.txt
00029 
00030 
00031 --- LGPL License --
00032   **Provided you kindly display the Kyra splash screen (details below), 
00033         you     may use the LGPL license:**
00034 
00035     This library is free software; you can redistribute it and/or
00036     modify it under the terms of the GNU Lesser General Public
00037     License as published by the Free Software Foundation; either
00038     version 2.1 of the License, or (at your option) any later version.
00039 
00040     This library is distributed in the hope that it will be useful,
00041     but WITHOUT ANY WARRANTY; without even the implied warranty of
00042     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00043     Lesser General Public License for more details.
00044 
00045     You should have received a copy of the GNU Lesser General Public
00046     License along with this library; if not, write to the Free Software
00047     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00048 
00049         The full text of the license can be found in lgpl.txt
00050 
00051 
00052 --- Kyra Splash Screen.
00053 
00054         It would be appreciate if you display the Kyra splash screen when using
00055         either license, however it is only required for the LGPL. All the
00056         resources for the splash are compiled into the library, and it can be
00057         accessed through the following API:
00058 
00059                 KrEngine::StartSplash
00060                 KrEngine::UpdateSplash
00061                 KrEngine::EndSplash
00062 
00063         Full documentation is provided with the KrEngine class. The splash screen
00064         should be displayed for 2 seconds.
00065 
00066         Thank you.
00067 */
00068 
00069 #ifndef INPLACE_IMAGENODE_INCLUDED
00070 #define INPLACE_IMAGENODE_INCLUDED
00071 
00072 #include "../util/gldebug.h"
00073 
00074 // The type of this must be a pointer.
00075 template <class T>
00076 class GlInsideNode
00077 {
00078   public:
00080         GlInsideNode()                                  { next = this; prev = this; data = 0; }
00081 
00083         GlInsideNode( T _data )                 { next = this; prev = this; data = _data; }
00084 
00085         virtual ~GlInsideNode()                 {}
00086 
00087         bool IsSentinel() const                 { return !data; }
00088         bool InList() const                             { return !(( next == this ) && ( prev == this )); }
00089 
00091         void InsertBefore( GlInsideNode<T>* addMe )
00092         {
00093                 GLASSERT( !addMe->IsSentinel() );
00094                 addMe->prev = prev;
00095                 prev->next = addMe;
00096                 prev = addMe;
00097                 addMe->next = this;
00098         }
00099 
00101         void InsertAfter( GlInsideNode<T>* addMe )
00102         {
00103                 GLASSERT( !addMe->IsSentinel() );
00104                 addMe->prev = this;
00105                 addMe->next = next;
00106                 next->prev = addMe;
00107                 next = addMe;
00108         }
00109 
00111         void Remove()
00112         {
00113                 prev->next = next;
00114                 next->prev = prev;
00115                 prev = next = this;             // assume sentinel, again.
00116         }
00117         
00118         // Should be private, but I don't feel like fighting with
00119         // making templates friends.
00120 
00121         GlInsideNode<T>*        next;
00122         GlInsideNode<T>*        prev;
00123         T                                       data;
00124 };
00125 
00126 
00127 template <class T>
00128 class GlInsideNodeIt
00129 {
00130   public:
00131         GlInsideNodeIt( GlInsideNode<T>& _sentinel )     
00132                 : sentinel( &_sentinel ), current( 0 ) 
00133         { 
00134                 GLASSERT( sentinel->IsSentinel() ); 
00135         }
00136 
00137         GlInsideNode<T>*        CurrentNode()                                           { return current; }
00138         T                                       CurrentData()                                           { return current->data; }
00139         void                            SetCurrent( GlInsideNode<T>* c )        { current = c; }
00140 
00141         void Begin()    { current = sentinel->next; }
00142         void Last()             { current = sentinel->prev; }
00143         void Next()             { current = current->next; }
00144         void Prev()             { current = current->prev; }
00145         bool Done()             { return current->IsSentinel(); }
00146                 
00147         void InsertBefore( GlInsideNode<T>& addMe )     { current->InsertBefore( &addMe ); }
00148         void InsertAfter(  GlInsideNode<T>& addMe )     { current->InsertAfter( &addMe ); }
00149 
00150   private:
00151         GlInsideNode<T>*        sentinel;
00152         GlInsideNode<T>*        current;
00153 };
00154 
00155 
00156 #endif

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