Traverso/cvs/traverso/src/core/FadeCurve.h

/*
Copyright (C) 2006 Remon Sijrier 

This file is part of Traverso

Traverso 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.

$Id: FadeCurve.h,v 1.19 2008/01/21 16:22:14 r_sijrier Exp $
*/

#ifndef FADE_CURVE_H
#define FADE_CURVE_H

#include "Curve.h"

#include <QString>
#include <QStringList>
#include <QList>
#include <QPointF>

class Sheet;
class AudioClip;

class FadeCurve : public Curve, public APILinkedListNode
{
        Q_OBJECT
        
        Q_CLASSINFO("toggle_bypass", tr("Toggle Bypass"))
        Q_CLASSINFO("set_mode", tr("Cycle Shape"))
        Q_CLASSINFO("reset", tr("Remove Fade"))
        Q_CLASSINFO("toggle_raster", tr("Toggle Raster"))
        
public:
        static QStringList defaultShapes;
        
        FadeCurve(AudioClip* clip, Sheet* sheet, QString type);
        ~FadeCurve();
        
        enum FadeType {
                FadeIn,
                FadeOut
        };
        
        QDomNode get_state(QDomDocument doc);
        int set_state( const QDomNode & node );
        
        void process(audio_sample_t** mixdown, nframes_t nframes, uint channels);
        
        float get_bend_factor() {return m_bendFactor;}
        float get_strength_factor() {return m_strenghtFactor;}
        int get_mode() const {return m_mode;}
        int get_raster() const {return m_raster;}
        
        void set_shape(QString shapeName);
        void set_bend_factor(float factor);
        void set_strength_factor(float factor);
        
        FadeType get_fade_type() const {return m_type;}
        QList<QPointF> get_control_points();
        
        bool is_bypassed() const {return m_bypass;}
        bool is_smaller_then(APILinkedListNode* node) {Q_UNUSED(node); return false;}
        
        void set_range(double pos);
        void set_mode(int m);

private:
        AudioClip*      m_clip;
        float           m_bendFactor;
        float           m_strenghtFactor;
        bool            m_bypass;
        int             m_mode;
        int             m_raster;
        FadeType        m_type;
        QString         m_sType;
        QList<QPointF>  m_controlPoints;
        
        QPointF get_curve_point(float f);
        void init();
        
public slots:
        void solve_node_positions();
        
        Command* toggle_bypass();
        Command* set_mode();
        Command* reset();
        Command* toggle_raster();
        
signals:
        void modeChanged();
        void bendValueChanged();
        void strengthValueChanged();
        void rasterChanged();
        void rangeChanged();
};

#endif

//eof

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