RendererModules/Ogre/RenderTarget.h

/***********************************************************************
    created:    Tue Feb 17 2009
    author:     Paul D Turner
*************************************************************************/
/***************************************************************************
 *   Copyright (C) 2004 - 2011 Paul D Turner & The CEGUI Development Team
 *
 *   Permission is hereby granted, free of charge, to any person obtaining
 *   a copy of this software and associated documentation files (the
 *   "Software"), to deal in the Software without restriction, including
 *   without limitation the rights to use, copy, modify, merge, publish,
 *   distribute, sublicense, and/or sell copies of the Software, and to
 *   permit persons to whom the Software is furnished to do so, subject to
 *   the following conditions:
 *
 *   The above copyright notice and this permission notice shall be
 *   included in all copies or substantial portions of the Software.
 *
 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 *   IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 *   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 *   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 *   OTHER DEALINGS IN THE SOFTWARE.
 ***************************************************************************/
#ifndef _CEGUIOgreRenderTarget_h_
#define _CEGUIOgreRenderTarget_h_

#include "../../RenderTarget.h"
#include "CEGUI/RendererModules/Ogre/Renderer.h"
#include "../../Rect.h"
#include <OgreMatrix4.h>

// Start of CEGUI namespace section
namespace CEGUI
{
template <typename T = RenderTarget>
class OGRE_GUIRENDERER_API OgreRenderTarget : public T
{
public:
    OgreRenderTarget(OgreRenderer& owner, Ogre::RenderSystem& rs);

    virtual ~OgreRenderTarget();

    void setOgreViewportDimensions(const Rectf& area);

    // implement parts of CEGUI::RenderTarget interface
    void draw(const GeometryBuffer& buffer);
    void draw(const RenderQueue& queue);
    void setArea(const Rectf& area);
    const Rectf& getArea() const;
    void activate();
    void deactivate();
    void unprojectPoint(const GeometryBuffer& buff,
                        const Vector2f& p_in, Vector2f& p_out) const;

protected:
    void updateMatrix() const;
    void updateViewport();
    void updateOgreViewportDimensions(const Ogre::RenderTarget* const rt);

    OgreRenderer& d_owner;
    Ogre::RenderSystem& d_renderSystem;
    Rectf d_area;
    Ogre::RenderTarget* d_renderTarget;
    Ogre::Viewport* d_viewport;
    mutable Ogre::Matrix4 d_matrix;
    mutable bool d_matrixValid;
    mutable float d_viewDistance;
    bool d_viewportValid;
    Rectf d_ogreViewportDimensions;
};

} // End of  CEGUI namespace section

#endif  // end of guard _CEGUIOgreRenderTarget_h_