File indexing completed on 2024-05-19 04:49:41

 /****************************************************************************************
  * Copyright (c) 2008 Daniel Jones <danielcjones@gmail.com>                             *
  * Copyright (c) 2009 Leo Franchi <lfranchi@kde.org>                                    *
  * Copyright (c) 2010, 2011 Ralf Engels <ralf-engels@gmx.de>                                  *
  *                                                                                      *
  * 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) version 3 or        *
  * any later version accepted by the membership of KDE e.V. (or its successor approved  *
  * by the membership of KDE e.V.), which shall act as a proxy defined in Section 14 of  *
  * version 3 of the license.                                                            *
  *                                                                                      *
  * 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, see <http://www.gnu.org/licenses/>.                           *
  ****************************************************************************************/
 
 #ifndef AMAROK_PARTBIAS_H
 #define AMAROK_PARTBIAS_H
 
 #include "dynamic/Bias.h"
 #include "dynamic/BiasFactory.h"
 
 #include <QList>
 #include <QVector>
 class QGridLayout;
 class QSlider;
 class QWidget;
 
 namespace Dynamic
 {
     class PartBias;
 
     /** The widget for the PartBias */
     class PartBiasWidget : public QWidget
     {
         Q_OBJECT
 
         public:
             explicit PartBiasWidget( Dynamic::PartBias* bias, QWidget* parent = nullptr );
 
         protected Q_SLOTS:
             void biasAppended( Dynamic::BiasPtr bias );
             void biasRemoved( int pos );
             void biasMoved( int from, int to );
 
             void sliderValueChanged( int val );
             void biasWeightsChanged();
 
         protected:
             /** True if we just handle a signal. Used to protect against recursion */
             bool m_inSignal;
 
             Dynamic::PartBias* m_bias;
 
             QGridLayout* m_layout;
 
             QList<QSlider*> m_sliders;
             QList<QWidget*> m_widgets;
     };
 
     /** The part bias will ensure that tracks are fulfilling all the sub-biases according to it's weights.
         The bias has an implicit random sub-bias
     */
     class PartBias : public AndBias
     {
         Q_OBJECT
 
         public:
             /** Create a new part bias.
             */
             PartBias();
 
             void fromXml( QXmlStreamReader *reader ) override;
             void toXml( QXmlStreamWriter *writer ) const override;
 
             static QString sName();
             QString name() const override;
             QString toString() const override;
 
             QWidget* widget( QWidget* parent = nullptr ) override;
             void paintOperator( QPainter* painter, const QRect &rect, Dynamic::AbstractBias* bias ) override;
 
             TrackSet matchingTracks( const Meta::TrackList& playlist,
                                              int contextCount, int finalCount,
                                              const TrackCollectionPtr &universe ) const override;
 
             bool trackMatches( int position,
                                        const Meta::TrackList& playlist,
                                        int contextCount ) const override;
 
             /** Returns the weights of the bias itself and all the sub-biases. */
             virtual QList<qreal> weights() const;
 
             /** Appends a bias to this bias.
                 This object will take ownership of the bias and free it when destroyed.
             */
             void appendBias( const Dynamic::BiasPtr &bias ) override;
             void moveBias( int from, int to ) override;
 
         public Q_SLOTS:
             void resultReceived( const Dynamic::TrackSet &tracks ) override;
 
             /** The overall weight has changed */
             void changeBiasWeight( int biasNum, qreal value );
 
         Q_SIGNALS:
             /** The overall weight has changed */
             void weightsChanged();
 
         protected Q_SLOTS:
             void biasReplaced( const Dynamic::BiasPtr &oldBias, const Dynamic::BiasPtr &newBias ) override;
 
         private:
             /** Using the data from m_matchingTracks it tries to compute a valid m_tracks */
             void updateResults() const; // only changes mutables
 
             QList<qreal> m_weights;
             mutable QVector<Dynamic::TrackSet> m_matchingTracks;
 
             // buffered by matchingTracks
             mutable Meta::TrackList m_playlist;
             mutable int m_contextCount;
             mutable int m_finalCount;
             mutable Dynamic::TrackCollectionPtr m_universe;
 
             Q_DISABLE_COPY(PartBias)
     };
 
 
     class AMAROK_EXPORT PartBiasFactory : public Dynamic::AbstractBiasFactory
     {
         public:
             QString i18nName() const override;
             QString name() const override;
             QString i18nDescription() const override;
             BiasPtr createBias() override;
     };
 
 }
 
 
 #endif