Chris@302: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@302: 
Chris@302: /*
Chris@302:     Sonic Visualiser
Chris@302:     An audio file viewer and annotation editor.
Chris@302:     Centre for Digital Music, Queen Mary, University of London.
Chris@302:     This file copyright 2006-2007 Chris Cannam and QMUL.
Chris@302:     
Chris@302:     This program is free software; you can redistribute it and/or
Chris@302:     modify it under the terms of the GNU General Public License as
Chris@302:     published by the Free Software Foundation; either version 2 of the
Chris@302:     License, or (at your option) any later version.  See the file
Chris@302:     COPYING included with this distribution for more information.
Chris@302: */
Chris@302: 
Chris@302: #ifndef _IMAGE_MODEL_H_
Chris@302: #define _IMAGE_MODEL_H_
Chris@302: 
Chris@302: #include "SparseModel.h"
Chris@302: #include "base/XmlExportable.h"
Chris@302: #include "base/RealTime.h"
Chris@302: 
Chris@302: /**
Chris@302:  * Image point type for use in a SparseModel.  This represents an
Chris@302:  * image, identified by filename, at a given time.  The filename can
Chris@302:  * be empty, in which case we instead have a space to put an image in.
Chris@302:  */
Chris@302: 
Chris@302: struct ImagePoint : public XmlExportable
Chris@302: {
Chris@302: public:
Chris@302:     ImagePoint(long _frame) : frame(_frame) { }
Chris@302:     ImagePoint(long _frame, QString _image, QString _label) :
Chris@302:         frame(_frame), image(_image), label(_label) { }
Chris@302: 
Chris@302:     int getDimensions() const { return 1; }
Chris@302:     
Chris@302:     long frame;
Chris@302:     QString image;
Chris@302:     QString label;
Chris@384: 
Chris@384:     QString getLabel() const { return label; }
Chris@302:     
Chris@314:     void toXml(QTextStream &stream,
Chris@314:                QString indent = "",
Chris@314:                QString extraAttributes = "") const
Chris@302:     {
Chris@314: 	stream <<
Chris@314:             QString("%1<point frame=\"%2\" image=\"%3\" label=\"%4\" %5/>\n")
Chris@302: 	    .arg(indent).arg(frame)
Chris@302:             .arg(encodeEntities(image))
Chris@302:             .arg(encodeEntities(label))
Chris@302:             .arg(extraAttributes);
Chris@302:     }
Chris@302: 
Chris@302:     QString toDelimitedDataString(QString delimiter, size_t sampleRate) const
Chris@302:     {
Chris@302:         QStringList list;
Chris@302:         list << RealTime::frame2RealTime(frame, sampleRate).toString().c_str();
Chris@302:         list << image;
Chris@318:         if (label != "") list << label;
Chris@302:         return list.join(delimiter);
Chris@302:     }
Chris@302: 
Chris@302:     struct Comparator {
Chris@302: 	bool operator()(const ImagePoint &p1,
Chris@302: 			const ImagePoint &p2) const {
Chris@302: 	    if (p1.frame != p2.frame) return p1.frame < p2.frame;
Chris@302:             if (p1.label != p2.label) return p1.label < p2.label;
Chris@302: 	    return p1.image < p2.image;
Chris@302: 	}
Chris@302:     };
Chris@302:     
Chris@302:     struct OrderComparator {
Chris@302: 	bool operator()(const ImagePoint &p1,
Chris@302: 			const ImagePoint &p2) const {
Chris@302: 	    return p1.frame < p2.frame;
Chris@302: 	}
Chris@302:     };
Chris@302: };
Chris@302: 
Chris@302: 
Chris@302: // Make this a class rather than a typedef so it can be predeclared.
Chris@302: 
Chris@302: class ImageModel : public SparseModel<ImagePoint>
Chris@302: {
Chris@302: public:
Chris@302:     ImageModel(size_t sampleRate, size_t resolution, bool notifyOnAdd = true) :
Chris@302: 	SparseModel<ImagePoint>(sampleRate, resolution, notifyOnAdd)
Chris@302:     { }
Chris@302: 
Chris@384:     QString getTypeName() const { return tr("Image"); }
Chris@384: 
Chris@302:     virtual void toXml(QTextStream &out,
Chris@302:                        QString indent = "",
Chris@302:                        QString extraAttributes = "") const
Chris@302:     {
Chris@302:         SparseModel<ImagePoint>::toXml
Chris@302: 	    (out, 
Chris@302:              indent,
Chris@302: 	     QString("%1 subtype=\"image\"")
Chris@302: 	     .arg(extraAttributes));
Chris@302:     }
Chris@302: 
Chris@302:     /**
Chris@302:      * Command to change the image for a point.
Chris@302:      */
Chris@302:     class ChangeImageCommand : public Command
Chris@302:     {
Chris@302:     public:
Chris@302:         ChangeImageCommand(ImageModel *model,
Chris@302:                            const ImagePoint &point,
Chris@302:                            QString newImage,
Chris@302:                            QString newLabel) :
Chris@302: 	    m_model(model), m_oldPoint(point), m_newPoint(point) {
Chris@302: 	    m_newPoint.image = newImage;
Chris@302:             m_newPoint.label = newLabel;
Chris@302: 	}
Chris@302: 
Chris@302: 	virtual QString getName() const { return tr("Edit Image"); }
Chris@302: 
Chris@302: 	virtual void execute() { 
Chris@302: 	    m_model->deletePoint(m_oldPoint);
Chris@302: 	    m_model->addPoint(m_newPoint);
Chris@302: 	    std::swap(m_oldPoint, m_newPoint);
Chris@302: 	}
Chris@302: 
Chris@302: 	virtual void unexecute() { execute(); }
Chris@302: 
Chris@302:     private:
Chris@302: 	ImageModel *m_model;
Chris@302: 	ImagePoint m_oldPoint;
Chris@302: 	ImagePoint m_newPoint;
Chris@302:     };
Chris@302: };
Chris@302: 
Chris@302: 
Chris@302: #endif
Chris@302: 
Chris@302: 
Chris@302: