source: GTP/trunk/App/Demos/Geom/OgreStuff/include/CEGUI/elements/CEGUIPopupMenu.h @ 1092

/************************************************************************
        filename:       CEGUIPopupMenu.h
        created:        27/3/2005
        author:         Tomas Lindquist Olsen (based on code by Paul D Turner)
        
        purpose:        Interface to base class for PopupMenu widget
*************************************************************************/
/*************************************************************************
    Crazy Eddie's GUI System (http://www.cegui.org.uk)
    Copyright (C)2004 - 2005 Paul D Turner (paul@cegui.org.uk)

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*************************************************************************/
#ifndef _CEGUIPopupMenu_h_
#define _CEGUIPopupMenu_h_

#include "CEGUIBase.h"
#include "CEGUIWindow.h"
#include "elements/CEGUIPopupMenuProperties.h"
#include "elements/CEGUIMenuBase.h"


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


// Start of CEGUI namespace section
namespace CEGUI
{

/*!
\brief
        Base class for popup menus
*/
class CEGUIEXPORT PopupMenu : public MenuBase
{
public:
        static const String EventNamespace;                             //!< Namespace for global events

        /*************************************************************************
                Accessor type functions
        *************************************************************************/
        /*!
        \brief
                Get the fade in time for this popup menu.

        \return
                The time in seconds that it takes for the popup to fade in.
                0 if fading is disabled.
        */
        float   getFadeInTime(void) const                       {return d_fadeInTime;}


        /*!
        \brief
                Get the fade out time for this popup menu.

        \return
                The time in seconds that it takes for the popup to fade out.
                0 if fading is disabled.
        */
        float   getFadeOutTime(void) const                      {return d_fadeOutTime;}


        /*************************************************************************
                Manipulators
        *************************************************************************/
        /*!
        \brief
                Set the fade in time for this popup menu.

        \param fadetime
                The time in seconds that it takes for the popup to fade in.
                If this parameter is zero, fading is disabled.
        */
        void    setFadeInTime(float fadetime)           {d_fadeInTime=fadetime;}


        /*!
        \brief
                Set the fade out time for this popup menu.

        \param fadetime
                The time in seconds that it takes for the popup to fade out.
                If this parameter is zero, fading is disabled.
        */
        void    setFadeOutTime(float fadetime)          {d_fadeOutTime=fadetime;}

        /*!
        \brief
                Tells the popup menu to open.
        */
        void    openPopupMenu(void);


        /*!
        \brief
                Tells the popup menu to close.
        */
        void    closePopupMenu(void);


        /*************************************************************************
                Construction and Destruction
        *************************************************************************/
        /*!
        \brief
                Constructor for PopupMenu objects
        */
        PopupMenu(const String& type, const String& name);


        /*!
        \brief
                Destructor for PopupMenu objects
        */
        virtual ~PopupMenu(void);


protected:
        /*************************************************************************
                Implementation Functions
        *************************************************************************/
        /*!
        \brief
        Perform actual update processing for this Window.

        \param elapsed
        float value indicating the number of seconds elapsed since the last update call.

        \return
        Nothing.
        */
        virtual void    updateSelf(float elapsed);


        /*!
        \brief
                Setup size and position for the item widgets attached to this Listbox

        \return
                Nothing.
        */
        virtual void    layoutItemWidgets(void);


        /*!
        \brief
                Resizes the popup menu to exactly fit the content that is attached to it.

        \return
                Nothing.
        */
        virtual Size getContentSize(void);


        /*!
        \brief
                Return whether this window was inherited from the given class name at some point in the inheritance heirarchy.

        \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==(const utf8*)"PopupMenu")       return true;
                return MenuBase::testClassName_impl(class_name);
        }


        /*************************************************************************
                Overridden event handlers
        *************************************************************************/
        virtual void onAlphaChanged(WindowEventArgs& e);


        /*************************************************************************
                Implementation Data
        *************************************************************************/
        float d_origAlpha;                      //!< The original alpha of this window.

        float d_fadeElapsed;            //!< The time in seconds this popup menu has been fading.
        float d_fadeOutTime;            //!< The time in seconds it takes for this popup menu to fade out.
        float d_fadeInTime;                     //!< The time in seconds it takes for this popup menu to fade in.
        bool d_fading;                          //!< true if this popup menu is fading in/out. false if not
        bool d_fadingOut;                       //!< true if this popup menu is fading out. false if fading in.

private:
        /*************************************************************************
        Static Properties for this class
        *************************************************************************/
        static PopupMenuProperties::FadeInTime  d_fadeInTimeProperty;
        static PopupMenuProperties::FadeOutTime d_fadeOutTimeProperty;


        /*************************************************************************
        Private methods
        *************************************************************************/
        void    addPopupMenuProperties(void);
};

} // End of  CEGUI namespace section


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


#endif  // end of guard _CEGUIPopupMenu_h_