/*****************************************************************************
 * tooltip.hpp
 *****************************************************************************
 * Copyright (C) 2003 the VideoLAN team
 * $Id$
 *
 * Authors: Cyril Deguet     <asmax@via.ecp.fr>
 *          Olivier Teulière <ipkiss@via.ecp.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

#ifndef TOOLTIP_HPP
#define TOOLTIP_HPP

#include "../utils/var_text.hpp"
#include "../commands/cmd_generic.hpp"

class GenericFont;
class OSTooltip;
class OSTimer;
class OSGraphics;
class UString;


class Tooltip: public SkinObject, public Observer<VarText>
{
    public:
        /// Create a tooltip with the given font and delay (in milliseconds)
        Tooltip( intf_thread_t *pIntf, const GenericFont &rFont, int delay );

        virtual ~Tooltip();

        /// Draw the tooltip and show it after the delay
        void show();

        /// Hide the tooltip and cancel the timer if a tooltip is waiting for
        /// display
        void hide();

    private:
        /// Font
        const GenericFont &m_rFont;
        /// Delay before popping the tooltip
        int m_delay;
        /// Timer to wait before showing the tooltip
        OSTimer *m_pTimer;
        /// OS specific tooltip window
        OSTooltip *m_pOsTooltip;
        /// Image of the tooltip
        OSGraphics *m_pImage;
        /// Position of the tooltip
        int m_xPos, m_yPos;

        /// Method called when the observed variable is modified
        virtual void onUpdate( Subject<VarText> &rVariable );

        /// Display text of the tooltip
        void displayText( const UString &rText );

        /// Build m_pImage with the given text
        void makeImage( const UString &rText );

        /// Callback to show the tooltip window
        DEFINE_CALLBACK( Tooltip, Show );
};


#endif
