view data/model/ModelDataTableModel.h @ 537:3cc4b7cd2aa5

* Merge from one-fftdataserver-per-fftmodel branch.  This bit of
reworking (which is not described very accurately by the title of
the branch) turns the MatrixFile object into something that either
reads or writes, but not both, and separates the FFT file cache
reader and writer implementations separately.  This allows the
FFT data server to have a single thread owning writers and one reader
per "customer" thread, and for all locking to be vastly simplified
and concentrated in the data server alone (because none of the
classes it makes use of is used in more than one thread at a time).
The result is faster and more trustworthy code.

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2008 QMUL.
    
    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.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef _MODEL_DATA_TABLE_MODEL_H_
#define _MODEL_DATA_TABLE_MODEL_H_

#include <QAbstractItemModel>

#include <vector>

class TabularModel;
class Command;

class ModelDataTableModel : public QAbstractItemModel
{
    Q_OBJECT

public:
    ModelDataTableModel(TabularModel *m);
    virtual ~ModelDataTableModel();

    QVariant data(const QModelIndex &index, int role) const;

    bool setData(const QModelIndex &index, const QVariant &value, int role);

    bool insertRow(int row, const QModelIndex &parent = QModelIndex());
    bool removeRow(int row, const QModelIndex &parent = QModelIndex());

    Qt::ItemFlags flags(const QModelIndex &index) const;

    QVariant headerData(int section, Qt::Orientation orientation,
                        int role = Qt::DisplayRole) const;

    QModelIndex index(int row, int column,
                      const QModelIndex &parent = QModelIndex()) const;

    QModelIndex parent(const QModelIndex &index) const;

    int rowCount(const QModelIndex &parent = QModelIndex()) const;
    int columnCount(const QModelIndex &parent = QModelIndex()) const;

    QModelIndex getModelIndexForFrame(size_t frame) const;
    size_t getFrameForModelIndex(const QModelIndex &) const;

    void sort(int column, Qt::SortOrder order = Qt::AscendingOrder);

    void setCurrentRow(int row);
    int getCurrentRow();

signals:
    void frameSelected(size_t);
    void addCommand(Command *);
    void currentChanged(const QModelIndex &);
    void modelRemoved();

protected slots:
    void modelChanged();
    void modelChanged(size_t, size_t);
    void modelAboutToBeDeleted();

protected:
    TabularModel *m_model;
    int m_sortColumn;
    Qt::SortOrder m_sortOrdering;
    int m_currentRow;
    typedef std::vector<int> RowList;
    mutable RowList m_sort;
    mutable RowList m_rsort;
    int getSorted(int row) const;
    int getUnsorted(int row) const;
    void resort() const;
    void resortNumeric() const;
    void resortAlphabetical() const;
    void clearSort();
};

#endif