Mercurial > hg > svcore
view data/model/TextModel.h @ 510:af7b6e55895b
* Ensure text models are exported with text properties in RDF, and
imported back into text models again (instead of time/value models)
author | Chris Cannam |
---|---|
date | Mon, 08 Dec 2008 11:53:10 +0000 |
parents | f5e8f12d2e58 |
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 _TEXT_MODEL_H_ #define _TEXT_MODEL_H_ #include "SparseModel.h" #include "base/XmlExportable.h" #include "base/RealTime.h" #include <QStringList> /** * Text point type for use in a SparseModel. This represents a piece * of text at a given time and y-value in the [0,1) range (indicative * of height on the window). Intended for casual textual annotations. */ struct TextPoint : public XmlExportable { public: TextPoint(long _frame) : frame(_frame), height(0.0f) { } TextPoint(long _frame, float _height, QString _label) : frame(_frame), height(_height), label(_label) { } int getDimensions() const { return 2; } long frame; float height; QString label; QString getLabel() const { return label; } void toXml(QTextStream &stream, QString indent = "", QString extraAttributes = "") const { stream << QString("%1<point frame=\"%2\" height=\"%3\" label=\"%4\" %5/>\n") .arg(indent).arg(frame).arg(height) .arg(encodeEntities(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(height); if (label != "") list << label; return list.join(delimiter); } struct Comparator { bool operator()(const TextPoint &p1, const TextPoint &p2) const { if (p1.frame != p2.frame) return p1.frame < p2.frame; if (p1.height != p2.height) return p1.height < p2.height; return p1.label < p2.label; } }; struct OrderComparator { bool operator()(const TextPoint &p1, const TextPoint &p2) const { return p1.frame < p2.frame; } }; }; // Make this a class rather than a typedef so it can be predeclared. class TextModel : public SparseModel<TextPoint> { Q_OBJECT public: TextModel(size_t sampleRate, size_t resolution, bool notifyOnAdd = true) : SparseModel<TextPoint>(sampleRate, resolution, notifyOnAdd) { } virtual void toXml(QTextStream &out, QString indent = "", QString extraAttributes = "") const { SparseModel<TextPoint>::toXml (out, indent, QString("%1 subtype=\"text\"") .arg(extraAttributes)); } QString getTypeName() const { return tr("Text"); } /** * TabularModel methods. */ virtual int getColumnCount() const { return 4; } virtual QString getHeading(int column) const { switch (column) { case 0: return tr("Time"); case 1: return tr("Frame"); case 2: return tr("Height"); case 3: return tr("Label"); default: return tr("Unknown"); } } virtual QVariant getData(int row, int column, int role) const { if (column < 2) { return SparseModel<TextPoint>::getData (row, column, role); } PointListIterator i = getPointListIteratorForRow(row); if (i == m_points.end()) return QVariant(); switch (column) { case 2: return i->height; case 3: return i->label; default: return QVariant(); } } virtual Command *getSetDataCommand(int row, int column, const QVariant &value, int role) { if (column < 2) { return SparseModel<TextPoint>::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 2: point.height = value.toDouble(); break; case 3: point.label = value.toString(); break; } command->addPoint(point); return command->finish(); } virtual bool isColumnTimeValue(int column) const { return (column < 2); } virtual SortType getSortType(int column) const { if (column == 3) return SortAlphabetical; return SortNumeric; } }; #endif