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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(sv_frame_t _frame) : frame(_frame), height(0.0f) { }
TextPoint(sv_frame_t _frame, float _height, QString _label) :
frame(_frame), height(_height), label(_label) { }
int getDimensions() const { return 2; }
sv_frame_t 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, DataExportOptions, sv_samplerate_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(sv_samplerate_t sampleRate, int 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);
}
PointListConstIterator 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 0;
PointListIterator i = getPointListIteratorForRow(row);
if (i == m_points.end()) return 0;
EditCommand *command = new EditCommand(this, tr("Edit Data"));
Point point(*i);
command->deletePoint(point);
switch (column) {
case 2: point.height = float(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
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