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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       d_identifierString("Unknown renderer (vendor did not set the ID string!)")
00057 {
00058         // setup standard events available
00059         addEvent(EventDisplaySizeChanged);
00060 
00061         // default initialisation
00062         resetZValue();
00063 }
00064 
00065 /*************************************************************************
00066         Destructor
00067 *************************************************************************/
00068 Renderer::~Renderer(void)
00069 {
00070     if(d_resourceProvider)
00071     {
00072         delete d_resourceProvider;
00073         d_resourceProvider = 0;
00074     }
00075 }
00076 
00077 ResourceProvider* Renderer::createResourceProvider(void)
00078 {
00079     d_resourceProvider = new DefaultResourceProvider();
00080     return d_resourceProvider;
00081 }
00082 
00083 const String& Renderer::getIdentifierString() const
00084 {
00085     return d_identifierString;
00086 }
00087 
00088 } // End of  CEGUI namespace section

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