// -------------------------------------------------------------------------------- //
//    Copyright (C) 2008-2020 J.Rios anonbeat@gmail.com
//
//    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 3, 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; see the file LICENSE.  If not, write to
//    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
//    Boston, MA 02110-1301 USA.
//
//    http://www.gnu.org/copyleft/gpl.html
//
// -------------------------------------------------------------------------------- //
#include "FaderTimeLine.h"

#include "MediaCtrl.h"

namespace Guayadeque {

// -------------------------------------------------------------------------------- //
guFaderTimeLine::guFaderTimeLine( const int timeout, wxEvtHandler * parent, guFaderPlaybin * faderplaybin,
    double volstart, double volend ) :
    guTimeLine( timeout, parent )
{
    m_FaderPlayBin = faderplaybin;
    m_VolStart = volstart;
    m_VolEnd = volend;

    if( volstart > volend )
        m_VolStep = volstart - volend;
    else
        m_VolStep = volend - volstart;

    //guLogDebug( wxT( "Created the fader timeline for %i msecs %0.2f -> %0.2f (%0.2f)" ), timeout, volstart, volend, m_VolStep );
}

// -------------------------------------------------------------------------------- //
guFaderTimeLine::~guFaderTimeLine()
{
    //guLogDebug( wxT( "Destroyed the fader timeline" ) );
}

// -------------------------------------------------------------------------------- //
void guFaderTimeLine::ValueChanged( float value )
{
    if( m_Duration )
    {
        if( m_Direction == guTimeLine::Backward )
        {
            m_FaderPlayBin->SetFaderVolume( m_VolEnd + ( value * m_VolStep ) );
        }
        else
        {
            m_FaderPlayBin->SetFaderVolume( m_VolStart + ( value * m_VolStep ) );
        }
    }
}

// -------------------------------------------------------------------------------- //
void guFaderTimeLine::Finished( void )
{
    m_FaderPlayBin->SetFaderVolume( m_VolEnd );
    m_FaderPlayBin->EndFade();
}

// -------------------------------------------------------------------------------- //
static bool TimerUpdated( guFaderTimeLine * timeline )
{
    timeline->TimerEvent();
    return true;
}

// -------------------------------------------------------------------------------- //
int guFaderTimeLine::TimerCreate( void )
{
    return g_timeout_add( m_UpdateInterval, GSourceFunc( TimerUpdated ), this );
}

}

// -------------------------------------------------------------------------------- //
