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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 2006-2007 Chris Cannam and 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 _IMAGE_MODEL_H_
#define _IMAGE_MODEL_H_
#include "SparseModel.h"
#include "base/XmlExportable.h"
#include "base/RealTime.h"
#include <QStringList>
/**
* Image point type for use in a SparseModel. This represents an
* image, identified by filename, at a given time. The filename can
* be empty, in which case we instead have a space to put an image in.
*/
struct ImagePoint : public XmlExportable
{
public:
ImagePoint(sv_frame_t _frame) : frame(_frame) { }
ImagePoint(sv_frame_t _frame, QString _image, QString _label) :
frame(_frame), image(_image), label(_label) { }
int getDimensions() const { return 1; }
sv_frame_t frame;
QString image;
QString label;
QString getLabel() const { return label; }
void toXml(QTextStream &stream,
QString indent = "",
QString extraAttributes = "") const
{
stream <<
QString("%1<point frame=\"%2\" image=\"%3\" label=\"%4\" %5/>\n")
.arg(indent).arg(frame)
.arg(encodeEntities(image))
.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 << image;
if (label != "") list << label;
return list.join(delimiter);
}
struct Comparator {
bool operator()(const ImagePoint &p1,
const ImagePoint &p2) const {
if (p1.frame != p2.frame) return p1.frame < p2.frame;
if (p1.label != p2.label) return p1.label < p2.label;
return p1.image < p2.image;
}
};
struct OrderComparator {
bool operator()(const ImagePoint &p1,
const ImagePoint &p2) const {
return p1.frame < p2.frame;
}
};
};
// Make this a class rather than a typedef so it can be predeclared.
class ImageModel : public SparseModel<ImagePoint>
{
Q_OBJECT
public:
ImageModel(sv_samplerate_t sampleRate, int resolution, bool notifyOnAdd = true) :
SparseModel<ImagePoint>(sampleRate, resolution, notifyOnAdd)
{ }
QString getTypeName() const { return tr("Image"); }
virtual void toXml(QTextStream &out,
QString indent = "",
QString extraAttributes = "") const
{
SparseModel<ImagePoint>::toXml
(out,
indent,
QString("%1 subtype=\"image\"")
.arg(extraAttributes));
}
/**
* Command to change the image for a point.
*/
class ChangeImageCommand : public Command
{
public:
ChangeImageCommand(ImageModel *model,
const ImagePoint &point,
QString newImage,
QString newLabel) :
m_model(model), m_oldPoint(point), m_newPoint(point) {
m_newPoint.image = newImage;
m_newPoint.label = newLabel;
}
virtual QString getName() const { return tr("Edit Image"); }
virtual void execute() {
m_model->deletePoint(m_oldPoint);
m_model->addPoint(m_newPoint);
std::swap(m_oldPoint, m_newPoint);
}
virtual void unexecute() { execute(); }
private:
ImageModel *m_model;
ImagePoint m_oldPoint;
ImagePoint m_newPoint;
};
/**
* 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("Image");
case 3: return tr("Label");
default: return tr("Unknown");
}
}
virtual QVariant getData(int row, int column, int role) const
{
if (column < 2) {
return SparseModel<ImagePoint>::getData
(row, column, role);
}
PointListConstIterator i = getPointListIteratorForRow(row);
if (i == m_points.end()) return QVariant();
switch (column) {
case 2: return i->image;
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<ImagePoint>::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.image = value.toString(); 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 > 2) return SortAlphabetical;
return SortNumeric;
}
};
#endif
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