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/***********************************************************************
	filename: 	CEGUIClippedContainer.h
	created:	Sun Jun 11 2006
	author:		Tomas Lindquist Olsen
*************************************************************************/
/***************************************************************************
 *   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 _CEGUIClippedContainer_h_
#define _CEGUIClippedContainer_h_

#include "CEGUIWindow.h"
#include "CEGUIWindowFactory.h"

// Start of CEGUI namespace section
namespace CEGUI
{
/*!
\brief
    Helper container window that has configurable clipping.
    Used by the ItemListbox widget.
*/
class CEGUIEXPORT ClippedContainer : public Window
{
public:
    /*************************************************************************
        Constants
    *************************************************************************/
    static const String WidgetTypeName;     //!< Type name for ClippedContainer.
    static const String EventNamespace;     //!< Namespace for global events

    /*************************************************************************
    	Object construction and destruction
    *************************************************************************/
    /*!
    \brief
        Constructor for ClippedContainer objects.
    */
    ClippedContainer(const String& type, const String& name);

    /*!
    \brief
        Destructor for ClippedContainer objects.
    */
    ~ClippedContainer(void);

    /*************************************************************************
    	Public interface methods
    *************************************************************************/
    /*!
    \brief
        Return the current clipping rectangle.

    \return
        Rect object describing the clipping area in pixel that will be applied during rendering.
    */
    const Rect& getClipArea(void) const;

    /*!
    \brief
        Returns the reference window used for converting the clipper rect to screen space.
    */
    Window* getClipperWindow(void) const;

    /*!
    \brief
        Set the custom clipper area in pixels.
    */
    void setClipArea(const Rect& r);

    /*!
    \brief
        Set the clipper reference window.

    \param w
        The window to be used a base for converting the custom clipper rect to
        screen space. NULL if the clipper rect is relative to the screen.
    */
    void setClipperWindow(Window* w);

    // Overridden from Window.
    virtual Rect getUnclippedInnerRect_impl(void) const;

protected:
    /*************************************************************************
    	Implementation methods
    *************************************************************************/
	/*!
	\brief
		Return whether this window was inherited from the given class name at some point in the inheritance hierarchy.

	\param class_name
		The class name that is to be checked.

	\return
		true if this window was inherited from \a class_name. false if not.
	*/
	virtual bool	testClassName_impl(const String& class_name) const
	{
		if (class_name=="ClippedContainer")	return true;
		return Window::testClassName_impl(class_name);
	}

    /*************************************************************************
    	Overridden from Window.
    *************************************************************************/
    virtual void drawSelf(float) {}

    /*************************************************************************
    	Data fields
    *************************************************************************/
    //! the pixel rect to be used for clipping relative to either a window or the screen.
    Rect d_clipArea;
    //! the base window which the clipping rect is relative to.
    Window* d_clipperWindow;
};

} // End of  CEGUI namespace section

#endif	// end of guard _CEGUIClippedContainer_h_
CEGUIClippedContainer.h
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