ctrl_slider.hpp

/*****************************************************************************
 * ctrl_slider.hpp
 *****************************************************************************
 * Copyright (C) 2003 the VideoLAN team
 * $Id: ctrl_slider.hpp 12054 2005-08-06 23:45:34Z asmax $
 *
 * Authors: Cyril Deguet     <[email protected]>
 *          Olivier Teulière <[email protected]>
 *
 * 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 CTRL_SLIDER_HPP
#define CTRL_SLIDER_HPP

#include "ctrl_generic.hpp"
#include "../utils/bezier.hpp"
#include "../utils/fsm.hpp"
#include "../utils/observer.hpp"


class GenericBitmap;
class OSGraphics;
class VarPercent;


class CtrlSliderCursor: public CtrlGeneric, public Observer<VarPercent>
{
    public:
        CtrlSliderCursor( intf_thread_t *pIntf, const GenericBitmap &rBmpUp,
                          const GenericBitmap &rBmpOver,
                          const GenericBitmap &rBmpDown,
                          const Bezier &rCurve, VarPercent &rVariable,
                          VarBool *pVisible, const UString &rTooltip,
                          const UString &rHelp );

        virtual ~CtrlSliderCursor();

        virtual void handleEvent( EvtGeneric &rEvent );

        virtual bool mouseOver( int x, int y ) const;

        virtual void draw( OSGraphics &rImage, int xDest, int yDest );

        virtual UString getTooltipText() const { return m_tooltip; }

        virtual string getType() const { return "slider_cursor"; }

    private:
        FSM m_fsm;
        VarPercent &m_rVariable;
        const UString m_tooltip;
        int m_width, m_height;
        int m_xPosition, m_yPosition;
        DEFINE_CALLBACK( CtrlSliderCursor, OverDown )
        DEFINE_CALLBACK( CtrlSliderCursor, DownOver )
        DEFINE_CALLBACK( CtrlSliderCursor, OverUp )
        DEFINE_CALLBACK( CtrlSliderCursor, UpOver )
        DEFINE_CALLBACK( CtrlSliderCursor, Move )
        DEFINE_CALLBACK( CtrlSliderCursor, Scroll )
        float m_lastPercentage;
        int m_xOffset, m_yOffset;
        EvtGeneric *m_pEvt;
        OSGraphics *m_pImgUp, *m_pImgOver, *m_pImgDown;
        OSGraphics *m_pImg;
        const Bezier &m_rCurve;

        virtual void onUpdate( Subject<VarPercent> &rVariable );

        void getResizeFactors( float &rFactorX, float &rFactorY ) const;
};


class CtrlSliderBg: public CtrlGeneric
{
    public:
        CtrlSliderBg( intf_thread_t *pIntf, CtrlSliderCursor &rCursor,
                      const Bezier &rCurve, VarPercent &rVariable,
                      int thickness, VarBool *pVisible, const UString &rHelp );
        virtual ~CtrlSliderBg() {}

        virtual bool mouseOver( int x, int y ) const;

        virtual void handleEvent( EvtGeneric &rEvent );

        virtual string getType() const { return "slider_bg"; }

    private:
        CtrlSliderCursor &m_rCursor;
        VarPercent &m_rVariable;
        int m_thickness;
        const Bezier &m_rCurve;
        int m_width, m_height;

        void getResizeFactors( float &rFactorX, float &rFactorY ) const;
};


#endif

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