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CEGUIRenderer.cpp

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00001 /************************************************************************
00002         filename:       CEGUIRenderer.cpp
00003         created:        20/2/2004
00004         author:         Paul D Turner
00005         
00006         purpose:        Some base class implementation for Renderer objects
00007 *************************************************************************/
00008 /*************************************************************************
00009     Crazy Eddie's GUI System (http://www.cegui.org.uk)
00010     Copyright (C)2004 - 2005 Paul D Turner (paul@cegui.org.uk)
00011 
00012     This library is free software; you can redistribute it and/or
00013     modify it under the terms of the GNU Lesser General Public
00014     License as published by the Free Software Foundation; either
00015     version 2.1 of the License, or (at your option) any later version.
00016 
00017     This library is distributed in the hope that it will be useful,
00018     but WITHOUT ANY WARRANTY; without even the implied warranty of
00019     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00020     Lesser General Public License for more details.
00021 
00022     You should have received a copy of the GNU Lesser General Public
00023     License along with this library; if not, write to the Free Software
00024     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00025 *************************************************************************/
00026 #include "CEGUIRenderer.h"
00027 #include "CEGUIEventSet.h"
00028 #include "CEGUIEvent.h"
00029 #include "CEGUIDefaultResourceProvider.h"
00030 
00031 
00032 // Start of CEGUI namespace section
00033 namespace CEGUI
00034 {
00035 const String Renderer::EventNamespace("Renderer");
00036 
00037 /*************************************************************************
00038         Event name constants (static data definitions)
00039 *************************************************************************/
00040 const String Renderer::EventDisplaySizeChanged( (utf8*)"DisplayModeChanged" );
00041 
00042 
00043 /*************************************************************************
00044         Implementation constants
00045 *************************************************************************/
00046 const float     Renderer::GuiZInitialValue              = 1.0f;
00047 const float     Renderer::GuiZElementStep               = 0.001f;               // this is enough for 1000 Windows.
00048 const float     Renderer::GuiZLayerStep                 = 0.0001f;              // provides space for 10 layers per Window.
00049 
00050 
00051 /*************************************************************************
00052         Constructor
00053 *************************************************************************/
00054 Renderer::Renderer(void)
00055     : d_resourceProvider(0)
00056 {
00057         // setup standard events available
00058         addEvent(EventDisplaySizeChanged);
00059 
00060         // default initialisation
00061         resetZValue();
00062 }
00063 
00064 /*************************************************************************
00065         Destructor
00066 *************************************************************************/
00067 Renderer::~Renderer(void)
00068 {
00069     if(d_resourceProvider)
00070     {
00071         delete d_resourceProvider;
00072         d_resourceProvider = 0;
00073     }
00074 }
00075 
00076 ResourceProvider* Renderer::createResourceProvider(void)
00077 {
00078     d_resourceProvider = new DefaultResourceProvider();
00079     return d_resourceProvider;
00080 }
00081 
00082 } // End of  CEGUI namespace section

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