Chris@8: /* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */
Chris@8: 
Chris@8: /*
Chris@8:     A waveform viewer and audio annotation editor.
Chris@8:     Chris Cannam, Queen Mary University of London, 2005-2006
Chris@8:     
Chris@8:     This is experimental software.  Not for distribution.
Chris@8: */
Chris@8: 
Chris@8: #ifndef _SELECTION_H_
Chris@8: #define _SELECTION_H_
Chris@8: 
Chris@8: #include <cstddef>
Chris@24: #include <set>
Chris@8: 
Chris@8: class Selection
Chris@8: {
Chris@8: public:
Chris@8:     Selection();
Chris@8:     Selection(size_t startFrame, size_t endFrame);
Chris@8:     Selection(const Selection &);
Chris@8:     Selection &operator=(const Selection &);
Chris@8:     virtual ~Selection();
Chris@8: 
Chris@8:     bool isEmpty() const;
Chris@8:     size_t getStartFrame() const;
Chris@8:     size_t getEndFrame() const;
Chris@9:     bool contains(size_t frame) const;
Chris@8: 
Chris@8:     bool operator<(const Selection &) const;
Chris@8:     bool operator==(const Selection &) const;
Chris@8:     
Chris@8: protected:
Chris@8:     size_t m_startFrame;
Chris@8:     size_t m_endFrame;
Chris@8: };
Chris@8: 
Chris@24: class MultiSelection
Chris@24: {
Chris@24: public:
Chris@24:     MultiSelection();
Chris@24:     virtual ~MultiSelection();
Chris@24: 
Chris@24:     typedef std::set<Selection> SelectionList;
Chris@24: 
Chris@24:     const SelectionList &getSelections() const;
Chris@24:     void setSelection(const Selection &selection);
Chris@24:     void addSelection(const Selection &selection);
Chris@24:     void removeSelection(const Selection &selection);
Chris@24:     void clearSelections();
Chris@24: 
Chris@24:     /**
Chris@24:      * Return the selection that contains a given frame.
Chris@24:      * If defaultToFollowing is true, and if the frame is not in a
Chris@24:      * selected area, return the next selection after the given frame.
Chris@24:      * Return the empty selection if no appropriate selection is found.
Chris@24:      */
Chris@36:     Selection getContainingSelection(size_t frame, bool defaultToFollowing) const;
Chris@24: 
Chris@24: protected:
Chris@24:     SelectionList m_selections;
Chris@24: };
Chris@24:     
Chris@24: 
Chris@8: #endif