comparison base/Selection.h @ 0:fc9323a41f5a

start base : Sonic Visualiser sv1-1.0rc1

+/* -*- 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 _SELECTION_H_
+#define _SELECTION_H_
+
+#include <cstddef>
+#include <set>
+
+#include "XmlExportable.h"
+
+class Selection
+{
+public:
+    Selection();
+    Selection(size_t startFrame, size_t endFrame);
+    Selection(const Selection &);
+    Selection &operator=(const Selection &);
+    virtual ~Selection();
+
+    bool isEmpty() const;
+    size_t getStartFrame() const;
+    size_t getEndFrame() const;
+    bool contains(size_t frame) const;
+
+    bool operator<(const Selection &) const;
+    bool operator==(const Selection &) const;
+    
+protected:
+    size_t m_startFrame;
+    size_t m_endFrame;
+};
+
+class MultiSelection : public XmlExportable
+{
+public:
+    MultiSelection();
+    virtual ~MultiSelection();
+
+    typedef std::set<Selection> SelectionList;
+
+    const SelectionList &getSelections() const;
+    void setSelection(const Selection &selection);
+    void addSelection(const Selection &selection);
+    void removeSelection(const Selection &selection);
+    void clearSelections();
+
+    /**
+     * Return the selection that contains a given frame.
+     * If defaultToFollowing is true, and if the frame is not in a
+     * selected area, return the next selection after the given frame.
+     * Return the empty selection if no appropriate selection is found.
+     */
+    Selection getContainingSelection(size_t frame, bool defaultToFollowing) const;
+
+    virtual QString toXmlString(QString indent = "",
+				QString extraAttributes = "") const;
+
+protected:
+    SelectionList m_selections;
+};
+    
+
+#endif