guimenu.h

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/********************************************************************************/
/*                                                                              */
/*  Netrinjo-Engine - a library for game-development                            */
/*  Copyright (C) 2007 by Tobias Nadler                                         */
/*                                                                              */
/*  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 GUIMENU_H
#define GUIMENU_H

#include "guidynamicbutton.h"

class GuiMenuItem;
class GuiMenuBar;

class DECLSPEC GuiMenuBar : public GuiElement
{
public:
    DECLSPEC GuiMenuBar( const SDL_Rect &r, GuiElement *parent, const char *name, bool horizontal = true );
    virtual DECLSPEC ~GuiMenuBar();
    
    virtual const char * getClassName() { return "GuiMenuBar"; }
    
    DECLSPEC void hideSubmenus();
    DECLSPEC void showAt( const SDL_Rect &r );
    DECLSPEC void setCallback( const FunctionData &fd ) { fdSelect = fd; }
    
protected:
    virtual DECLSPEC void onSelect( GuiMenuItem *selected );
    
private:
    // refreshes the positions of it's items and it's visibility
    void refresh();
    // sets the positoion and adds it to lItems
    void add( GuiMenuItem *item );
    // true if the items are listed in a row; false if in a column
    bool bHorizontal;
    std::list<GuiMenuItem*> lItems;
    // pointer to an item that makes this menu appear, NULL if there is none
    GuiMenuItem *pActivator;
    
    FunctionData fdSelect;
    
    friend class GuiMenuItem;
};


class DECLSPEC GuiMenuItem: public GuiElement
{
public:
    enum TYPE {tCheckable, tClickable, tSubmenu};
    DECLSPEC GuiMenuItem( const SDL_Rect &r, GuiMenuBar *parent, const char *name, bool checkable = false,
                          const char *txt=0, SdlSurfaceContainer *b=0, SdlAudio *u=0, SdlAudio *d=0 );
    DECLSPEC GuiMenuItem( const SDL_Rect &r, GuiMenuBar *parent, const char *name, GuiMenuBar *submenu,
                          const char *txt=NULL, SdlSurfaceContainer *b=0, SdlAudio *u=0, SdlAudio *d=0 );
    virtual DECLSPEC ~GuiMenuItem();
    
    virtual const char * getClassName() { return "GuiMenuItem"; }
    
    int getItemID() { return nID; }
    void setItemID( int id )    { nID = id; }
    DECLSPEC void setSelectable( bool cansel );
    GuiMenuBar *getBar()    { return pSubmenu ? pSubmenu : gmbSubmenu; }
    void setButtonImages( SdlSurfaceContainer *b );
    
private:
    static void OnClicked( void *sender, BasicObject *aim, void * )
    {
        ((GuiMenuItem*)aim)->onClicked();
    }
    void onClicked();
    // called only if type==tSubmenu and when the submenu is closed (hidden)
    void onSubClose( GuiMenuItem *selected );
    // hides other menus (necessary when the submenu appears)
    void hideSiblingMenus();
    
    GuiDynamicButton *gdbMain;
    // pointer to independent menu
    GuiMenuBar *pSubmenu;
    // pointer to self-created menu (will be destroyed with this)
    GuiMenuBar *gmbSubmenu;
    //GuiText *gtDescription;
    TYPE type;
    int nID;
    
    friend class GuiMenuBar;
};


#endif

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