comparison document/SVFileReader.h @ 0:cd5d7ff8ef38

* Reorganising code base.  This revision will not compile.

+/* -*- 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 _SV_FILE_READER_H_
+#define _SV_FILE_READER_H_
+
+#include "layer/LayerFactory.h"
+#include "transform/Transform.h"
+
+#include <QXmlDefaultHandler>
+
+#include <map>
+
+class Pane;
+class Model;
+class Document;
+class PlayParameters;
+
+class SVFileReaderPaneCallback
+{
+public:
+    virtual Pane *addPane() = 0;
+    virtual void setWindowSize(int width, int height) = 0;
+    virtual void addSelection(int start, int end) = 0;
+};
+
+class SVFileReader : public QXmlDefaultHandler
+{
+public:
+    SVFileReader(Document *document,
+		 SVFileReaderPaneCallback &callback);
+    virtual ~SVFileReader();
+
+    void parse(const QString &xmlData);
+    void parse(QXmlInputSource &source);
+
+    bool isOK();
+    QString getErrorString() const { return m_errorString; }
+
+    // For loading a single layer onto an existing pane
+    void setCurrentPane(Pane *pane) { m_currentPane = pane; }
+    
+    virtual bool startElement(const QString &namespaceURI,
+			      const QString &localName,
+			      const QString &qName,
+			      const QXmlAttributes& atts);
+
+    virtual bool characters(const QString &);
+
+    virtual bool endElement(const QString &namespaceURI,
+			    const QString &localName,
+			    const QString &qName);
+
+    bool error(const QXmlParseException &exception);
+    bool fatalError(const QXmlParseException &exception);
+
+protected:
+    bool readWindow(const QXmlAttributes &);
+    bool readModel(const QXmlAttributes &);
+    bool readView(const QXmlAttributes &);
+    bool readLayer(const QXmlAttributes &);
+    bool readDatasetStart(const QXmlAttributes &);
+    bool addBinToDataset(const QXmlAttributes &);
+    bool addPointToDataset(const QXmlAttributes &);
+    bool addRowToDataset(const QXmlAttributes &);
+    bool readRowData(const QString &);
+    bool readDerivation(const QXmlAttributes &);
+    bool readPlayParameters(const QXmlAttributes &);
+    bool readPlugin(const QXmlAttributes &);
+    bool readSelection(const QXmlAttributes &);
+    void addUnaddedModels();
+
+    Document *m_document;
+    SVFileReaderPaneCallback &m_paneCallback;
+    Pane *m_currentPane;
+    std::map<int, Layer *> m_layers;
+    std::map<int, Model *> m_models;
+    std::set<Model *> m_addedModels;
+    std::map<int, int> m_awaitingDatasets; // map dataset id -> model id
+    Model *m_currentDataset;
+    Model *m_currentDerivedModel;
+    PlayParameters *m_currentPlayParameters;
+    QString m_currentTransform;
+    int m_currentTransformChannel;
+    QString m_currentTransformConfiguration;
+    QString m_datasetSeparator;
+    bool m_inRow;
+    bool m_inView;
+    bool m_inData;
+    bool m_inSelections;
+    int m_rowNumber;
+    QString m_errorString;
+    bool m_ok;
+};
+
+#endif