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// -*- c-basic-offset: 4 -*-
/*
Rosegarden-4
A sequencer and musical notation editor.
This program is Copyright 2000-2005
Guillaume Laurent <glaurent@telegraph-road.org>,
Chris Cannam <cannam@all-day-breakfast.com>,
Richard Bown <bownie@bownie.com>
The moral right of the authors to claim authorship of this work
has been asserted.
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 <set>
#include "PropertyName.h"
#include "Event.h"
#include "Segment.h"
namespace Rosegarden {
class Composition;
/**
* EventSelection records a (possibly non-contiguous) selection
* of Events in a single Segment, used for cut'n paste operations.
* It does not take a copy of those Events, it just remembers
* which ones they are.
*/
class EventSelection : public SegmentObserver
{
public:
typedef std::multiset<Event*, Event::EventCmp> eventcontainer;
/**
* Construct an empty EventSelection based on the given Segment.
*/
EventSelection(Segment &);
/**
* Construct an EventSelection selecting all the events in the
* given range of the given Segment. Set overlap if you want
* to include Events overlapping the selection edges.
*/
EventSelection(Segment &, timeT beginTime, timeT endTime, bool overlap = false);
EventSelection(const EventSelection&);
virtual ~EventSelection();
/**
* Add an Event to the selection. The Event should come from
* the Segment that was passed to the constructor. Will
* silently drop any event that is already in the selection.
*/
void addEvent(Event* e);
/**
* Add all the Events in the given Selection to this one.
* Will silently drop any events that are already in the
* selection.
*/
void addFromSelection(EventSelection *sel);
/**
* If the given Event is in the selection, take it out.
*/
void removeEvent(Event *e);
/**
* Test whether a given Event (in the Segment) is part of
* this selection.
*/
bool contains(Event *e) const;
/**
* Return true if there are any events of the given type in
* this selection. Slow.
*/
bool contains(const std::string &eventType) const;
/**
* Return the time at which the first Event in the selection
* begins.
*/
timeT getStartTime() const { return m_beginTime; }
/**
* Return the time at which the last Event in the selection ends.
*/
timeT getEndTime() const { return m_endTime; }
/**
* Return the total duration spanned by the selection.
*/
timeT getTotalDuration() const;
typedef std::vector<std::pair<Segment::iterator,
Segment::iterator> > RangeList;
/**
* Return a set of ranges spanned by the selection, such that
* each range covers only events within the selection.
*/
RangeList getRanges() const;
typedef std::vector<std::pair<timeT, timeT> > RangeTimeList;
/**
* Return a set of times spanned by the selection, such that
* each time range covers only events within the selection.
*/
RangeTimeList getRangeTimes() const;
/**
* Return the number of events added to this selection.
*/
unsigned int getAddedEvents() const { return m_segmentEvents.size(); }
const eventcontainer &getSegmentEvents() const { return m_segmentEvents; }
eventcontainer &getSegmentEvents() { return m_segmentEvents; }
const Segment &getSegment() const { return m_originalSegment; }
Segment &getSegment() { return m_originalSegment; }
// SegmentObserver methods
virtual void eventAdded(const Segment *, Event *) { }
virtual void eventRemoved(const Segment *, Event *);
virtual void endMarkerTimeChanged(const Segment *, bool) { }
virtual void segmentDeleted(const Segment *);
private:
EventSelection &operator=(const EventSelection &);
protected:
//--------------- Data members ---------------------------------
Segment& m_originalSegment;
/// pointers to Events in the original Segment
eventcontainer m_segmentEvents;
timeT m_beginTime;
timeT m_endTime;
bool m_haveRealStartTime;
};
/**
* SegmentSelection is much simpler than EventSelection, we don't
* need to do much with this really
*/
class SegmentSelection : public std::set<Segment *>
{
public:
bool hasNonAudioSegment() const;
};
}
#endif
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