Mercurial > hg > svcore
view data/model/RegionModel.h @ 468:70b333085952
* complete switching the code to use CachedFile -- now to tidy & fix the
remaining flaws...
author | Chris Cannam |
---|---|
date | Mon, 27 Oct 2008 20:29:55 +0000 |
parents | 6441b31b37ac |
children | d7f3dfe6f9a4 |
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/* -*- 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 2006 Chris Cannam. 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 _REGION_MODEL_H_ #define _REGION_MODEL_H_ #include "IntervalModel.h" #include "base/RealTime.h" /** * RegionModel -- a concrete IntervalModel for intervals associated * with a value, which we call regions for no very compelling reason. */ /** * Region "point" type. A region is something that has an onset time, * a single value, and a duration. Like other points, it can also * have a label. * * This is called RegionRec instead of Region to avoid name collisions * with the X11 Region struct. Bah. */ struct RegionRec { public: RegionRec(long _frame) : frame(_frame), value(0.0f), duration(0) { } RegionRec(long _frame, float _value, size_t _duration, QString _label) : frame(_frame), value(_value), duration(_duration), label(_label) { } int getDimensions() const { return 3; } long frame; float value; size_t duration; QString label; QString getLabel() const { return label; } void toXml(QTextStream &stream, QString indent = "", QString extraAttributes = "") const { stream << QString("%1<point frame=\"%2\" value=\"%3\" duration=\"%4\" label=\"%5\" %6/>\n") .arg(indent).arg(frame).arg(value).arg(duration).arg(label).arg(extraAttributes); } QString toDelimitedDataString(QString delimiter, size_t sampleRate) const { QStringList list; list << RealTime::frame2RealTime(frame, sampleRate).toString().c_str(); list << QString("%1").arg(value); list << RealTime::frame2RealTime(duration, sampleRate).toString().c_str(); if (label != "") list << label; return list.join(delimiter); } struct Comparator { bool operator()(const RegionRec &p1, const RegionRec &p2) const { if (p1.frame != p2.frame) return p1.frame < p2.frame; if (p1.value != p2.value) return p1.value < p2.value; if (p1.duration != p2.duration) return p1.duration < p2.duration; return p1.label < p2.label; } }; struct OrderComparator { bool operator()(const RegionRec &p1, const RegionRec &p2) const { return p1.frame < p2.frame; } }; }; class RegionModel : public IntervalModel<RegionRec> { Q_OBJECT public: RegionModel(size_t sampleRate, size_t resolution, bool notifyOnAdd = true) : IntervalModel<RegionRec>(sampleRate, resolution, notifyOnAdd), m_valueQuantization(0), m_haveDistinctValues(false) { } RegionModel(size_t sampleRate, size_t resolution, float valueMinimum, float valueMaximum, bool notifyOnAdd = true) : IntervalModel<RegionRec>(sampleRate, resolution, valueMinimum, valueMaximum, notifyOnAdd), m_valueQuantization(0), m_haveDistinctValues(false) { } virtual ~RegionModel() { } float getValueQuantization() const { return m_valueQuantization; } void setValueQuantization(float q) { m_valueQuantization = q; } bool haveDistinctValues() const { return m_haveDistinctValues; } QString getTypeName() const { return tr("Region"); } virtual void toXml(QTextStream &out, QString indent = "", QString extraAttributes = "") const { std::cerr << "RegionModel::toXml: extraAttributes = \"" << extraAttributes.toStdString() << std::endl; IntervalModel<RegionRec>::toXml (out, indent, QString("%1 subtype=\"region\" valueQuantization=\"%2\"") .arg(extraAttributes).arg(m_valueQuantization)); } /** * TabularModel methods. */ virtual int getColumnCount() const { return 6; } virtual QString getHeading(int column) const { switch (column) { case 0: return tr("Time"); case 1: return tr("Frame"); case 2: return tr("Value"); case 3: return tr("Duration"); case 4: return tr("Label"); default: return tr("Unknown"); } } virtual QVariant getData(int row, int column, int role) const { if (column < 4) { return IntervalModel<RegionRec>::getData(row, column, role); } PointListIterator i = getPointListIteratorForRow(row); if (i == m_points.end()) return QVariant(); switch (column) { case 4: return i->label; default: return QVariant(); } } virtual Command *getSetDataCommand(int row, int column, const QVariant &value, int role) { if (column < 4) { return IntervalModel<RegionRec>::getSetDataCommand (row, column, value, role); } if (role != Qt::EditRole) return false; PointListIterator i = getPointListIteratorForRow(row); if (i == m_points.end()) return false; EditCommand *command = new EditCommand(this, tr("Edit Data")); Point point(*i); command->deletePoint(point); switch (column) { case 4: point.label = value.toString(); break; } command->addPoint(point); return command->finish(); } virtual SortType getSortType(int column) const { if (column == 5) return SortAlphabetical; return SortNumeric; } virtual void addPoint(const Point &point) { if (point.value != 0.f) m_haveDistinctValues = true; IntervalModel<RegionRec>::addPoint(point); } protected: float m_valueQuantization; bool m_haveDistinctValues; }; #endif