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/***********************************************************************
    filename:   CEGUIWindowRenderer.h
    created:    Jan 11 2006
    author:     Tomas Lindquist Olsen

    purpose:    Defines interface for the WindowRenderer base class
*************************************************************************/
/***************************************************************************
 *   Copyright (C) 2004 - 2006 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 _CEGUIWindowRenderer_h_
#define _CEGUIWindowRenderer_h_

#include "CEGUIWindow.h"
#include "CEGUIProperty.h"
#include <vector>

#if defined(_MSC_VER)
#   pragma warning(push)
#   pragma warning(disable : 4251)
#endif


// Start of CEGUI namespace section
namespace CEGUI
{

class WidgetLookFeel;

/*!
\brief
    Base-class for the assignable WindowRenderer object
*/
class CEGUIEXPORT WindowRenderer
{
public:
    /*************************************************************************
        Constructor / Destructor
    **************************************************************************/
    /*!
    \brief
        Constructor

    \param name
        Factory type name

    \param class_name
        The name of a widget class that is to be the minimum requirement for
        this window renderer.
    */
    WindowRenderer(const String& name, const String& class_name="Window");

    /*!
    \brief
        Destructor
    */
    virtual ~WindowRenderer();

    /*************************************************************************
        Public interface
    **************************************************************************/
    /*!
    \brief
        Populate render cache.

        This method must be implemented by all window renderers and should
        perform the rendering operations needed for this widget.
        Normally using the Falagard API...
    */
    virtual void render() = 0;

    /*!
    \brief
        Returns the factory type name of this window renderer.
    */
    const String& getName() const   {return d_name;}

    /*!
    \brief
        Get the window this windowrenderer is attached to.
    */
    Window* getWindow() const       {return d_window;}

    /*!
    \brief
        Get the "minimum" Window class this renderer requires
    */
    const String& getClass() const  {return d_class;}

    /*!
    \brief
        Get the Look'N'Feel assigned to our window
    */
    const WidgetLookFeel& getLookNFeel() const;

    /*!
    \brief
        Get unclipped inner rectangle that our window should return from its
        member function with the same name.
    */
    virtual Rect getUnclippedInnerRect() const;

    /*!
    \brief
        Get actual pixel rectangle our window is to return from its
        member function with the same name.
    */
    virtual Rect getPixelRect() const;

    /*!
    \brief
        Method called to perform extended laying out of the window's attached
        child windows.
    */
    virtual void performChildWindowLayout() {}

protected:
    /*************************************************************************
        Implementation methods
    **************************************************************************/
    /*!
    \brief
        Register a property class that will be properly managed by this window
        renderer.

    \param property
        Pointer to a static Property object that will be added to the target
        window.
    */
    void registerProperty(Property* property);

    /*!
    \brief
        Handler called when this windowrenderer is attached to a window
    */
    virtual void onAttach();

    /*!
    \brief
        Handler called when this windowrenderer is detached from its window
    */
    virtual void onDetach();

    /*!
    \brief
        Handler called when a Look'N'Feel is assigned to our window.
    */
    virtual void onLookNFeelAssigned() {}

    /*!
    \brief
        Handler called when a Look'N'Feel is removed/unassigned from our window.
    */
    virtual void onLookNFeelUnassigned() {}

    /*************************************************************************
        Implementation data
    **************************************************************************/
    Window* d_window;       //!< Pointer to the window this windowrenderer is assigned to.
    const String d_name;    //!< Name of the factory type used to create this window renderer.
    const String d_class;   //!< Name of the widget class that is the "minimum" requirement.

    typedef std::vector<Property*> PropertyList;
    PropertyList d_properties;  //!< The list of properties that this windowrenderer will be handling.

    // Window is friend so it can manipulate our 'd_window' member directly.
    // We don't want users fiddling with this so no public interface.
    friend class Window;
};

/*!
\brief
    Base-class for WindowRendererFactory
*/
class CEGUIEXPORT WindowRendererFactory
{
public:
    /*!
    \brief
        Contructor

    \param name
        Type name for this window renderer factory
    */
    WindowRendererFactory(const String& name) : d_factoryName(name) {}

    /*!
    \brief
        Destructor
    */
    virtual ~WindowRendererFactory() {}

    /*!
    \brief
        Returns the type name of this window renderer factory.
    */
    const String& getName() const {return d_factoryName;}

    /*!
    \brief
        Creates and returns a new window renderer object.
    */
    virtual WindowRenderer* create() = 0;

    /*!
    \brief
        Destroys a window renderer object previously created by us.
    */
    virtual void destroy(WindowRenderer* wr) = 0;

protected:
    String d_factoryName;   //!< Our factory type name.
};

} // End of CEGUI namespace

#if defined(_MSC_VER)
#   pragma warning(pop)
#endif

#endif // _CEGUIWindowRenderer_h_
CEGUIWindowRenderer.h
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