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equalizer.h

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#ifndef NOATUN_EQUALIZER_H
#define NOATUN_EQUALIZER_H

#include <qptrlist.h>
#include <qobject.h>
#include <kurl.h>

namespace Arts { class StereoEffect; }
class Engine;
class Equalizer;

class Preset
{
friend class Equalizer;
        Preset(const QString &file);
        Preset();
public:
        QString name() const;
        bool setName(const QString &name);
        bool save() const;
        bool load();

        void remove();

        QString file() const;
private:
        QString mFile;
};

class Band
{
friend class Equalizer;
friend class QPtrList<Band>;

private:
        Band();
        Band(int start, int end);
        virtual ~Band();
public:
        int level();
        void setLevel(int l);
        
        int start() const;
        int end() const;

        int center() const;

        QString formatStart(bool withHz=true) const;
        QString formatEnd(bool withHz=true) const;
        QString format(bool withHz=true) const;
        
private:
        int mLevel;
        int mStart, mEnd;
};

class Equalizer : public QObject
{
friend class Band;
friend class Preset;
friend class Engine;
Q_OBJECT
public:
        Equalizer();
        ~Equalizer();
        
        const QPtrList<Band> &bands() const;
        Band *band(int num) const;
        int bandCount() const;

        int preamp() const;
        bool isEnabled() const;
        
        void init();

public slots:
        void setPreamp(int p);
        void enable();
        void disable();
        void setEnabled(bool e);


public:
// saving eq stuff
        bool save(const KURL &file, const QString &friendly) const;

        bool load(const KURL &file);

        QString toString(const QString &name="stored") const;

        bool fromString(const QString &str);

        Preset *createPreset(const QString &name, bool smart=true);

        QPtrList<Preset> presets() const;
        
        Preset *preset(const QString &file);
        bool presetExists(const QString &name) const;
                
signals:
        void changed(Band *band);
        void changed();
        void enabled();
        void disabled();
        void enabled(bool e);

        void preampChanged(int p);
        void preampChanged();

        void changed(Preset *);

        void created(Preset*);

        void renamed(Preset *);

        void removed(Preset *);
        
private:
        void add(Band*);
        void remove(Band*);
        // apply the data to artsd
        void enableUpdates(bool on=true);
        void update(bool full=false);
        
private:
        QPtrList<Band> mBands;
        bool mUpdates;
        int mPreamp;
};



#endif

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