guimanager.h

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/********************************************************************************/
/*                                                                              */
/*  Netrinjo-Engine - a library for game-development                            */
/*  Copyright (C) 1999, 2000, 2005 by Tobias Nadler and Georg Schnattinger      */
/*                                                                              */
/*  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.          */
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/*  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.                             */
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/*  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 GUIMANAGER_H
#define GUIMANAGER_H

#include <list>
#include "SDL/SDL.h"
#include "uiobject.h"
#include "tinyxml.h"

class GuiElement;
class UiManager;

class DECLSPEC GuiManager : public UiObject
{
public:
    DECLSPEC GuiManager( UiManager *parent, const char *name = "GuiManager" );
    virtual DECLSPEC ~GuiManager();
    
    virtual const char *getClassName()  { return "GuiManager"; }
    DECLSPEC bool init(TiXmlElement *el = NULL);
    DECLSPEC void setBaseElements(GuiElement *front, GuiElement *main);
    GuiElement *getFront()  {return geFront;}
    GuiElement *getMain()   {return geMain;}
    DECLSPEC void focus(GuiElement *el);
    DECLSPEC bool release(GuiElement *el);
    GuiElement *getFocus()  {return geMouseFocus;}
    DECLSPEC void setCursor(GuiElement *cur);
    GuiElement *getCursor() { return geCursor; }
    DECLSPEC void cleanupElement(GuiElement *ge);
    
    static GuiManager *the;
    DECLSPEC static GuiManager *getThe();
protected:
    virtual Uint32 onKeyDown( SDL_KeyboardEvent *ev )   {return 0;}
    virtual Uint32 onKeyUp( SDL_KeyboardEvent *ev ) {return 0;}
    virtual DECLSPEC Uint32 onMouseDown( SDL_MouseButtonEvent *ev );
    virtual DECLSPEC Uint32 onMouseUp( SDL_MouseButtonEvent *ev );
    virtual DECLSPEC Uint32 onMouseMotion(SDL_MouseMotionEvent *ev);
    virtual DECLSPEC Uint32 onFocus(FocusTypes gained);
    virtual DECLSPEC Uint32 onRelease(FocusTypes lost);
    virtual DECLSPEC Uint32 onFrame();
    virtual Uint32 onThemeChanged( UiTheme *t ) {return 0;}
    virtual DECLSPEC void onDestroy();

private:
    Uint32 nDisplayWidth;
    Uint32 nDisplayHeight;

    // base element for the windows, buttons,...
    GuiElement *geMain;
    // base element for objects that appear in front of the windows: cursor, hints,...
    GuiElement *geFront;
    // the element, that currently has the mouse focus (changes when focus() or release() is called)
    GuiElement *geMouseFocus;
    // the element, over which the curser is
    GuiElement *geMouseOver;
    // the element that shows the mouse cursor
    GuiElement *geCursor;
    // currenly owning focustypes of UiManager
    FocusTypes ftCaptured;
};

#endif

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