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PasteConductorDataCommand.cpp

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */

/*
    Rosegarden
    A MIDI and audio sequencer and musical notation editor.
    Copyright 2000-2008 the Rosegarden development team.
 
    Other copyrights also apply to some parts of this work.  Please
    see the AUTHORS file and individual file headers for details.
 
    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.
*/


#include "PasteConductorDataCommand.h"

#include <klocale.h>
#include "base/Clipboard.h"
#include "base/Composition.h"
#include "base/NotationTypes.h"
#include "base/Selection.h"


namespace Rosegarden
{

PasteConductorDataCommand::PasteConductorDataCommand(Composition *composition,
        Clipboard *clipboard,
        timeT t) :
        KNamedCommand(i18n("Paste Tempos and Time Signatures")),
        m_composition(composition),
        m_clipboard(new Clipboard(*clipboard)),
        m_t0(t)
{}

PasteConductorDataCommand::~PasteConductorDataCommand()
{
    delete m_clipboard;
}

void
00046 PasteConductorDataCommand::execute()
{
    //!!! current implementation of execute and unexecute require
    // that the target area of the composition be empty of tempo and
    // timesig data before the command is executed

    if (m_clipboard->hasTimeSignatureSelection()) {

        for (TimeSignatureSelection::timesigcontainer::const_iterator i =
                    m_clipboard->getTimeSignatureSelection().begin();
                i != m_clipboard->getTimeSignatureSelection().end(); ++i) {

            timeT t = i->first;
            t = t - m_clipboard->getBaseTime() + m_t0;
            TimeSignature sig = i->second;

            if (i == m_clipboard->getTimeSignatureSelection().begin() &&
                    m_composition->getTimeSignatureAt(t) == sig)
                continue;

            m_composition->addTimeSignature(t, sig);
        }
    }

    if (m_clipboard->hasTempoSelection()) {

        for (TempoSelection::tempocontainer::const_iterator i =
                    m_clipboard->getTempoSelection().begin();
                i != m_clipboard->getTempoSelection().end(); ++i) {

            timeT t = i->first;
            t = t - m_clipboard->getBaseTime() + m_t0;
            tempoT tempo = i->second.first;
            tempoT targetTempo = i->second.second;

            if (i == m_clipboard->getTempoSelection().begin() &&
                    targetTempo < 0 &&
                    m_composition->getTempoAtTime(t) == tempo)
                continue;

            m_composition->addTempoAtTime(t, tempo, targetTempo);
        }
    }
}

void
00092 PasteConductorDataCommand::unexecute()
{
    //!!! see note above

    for (TimeSignatureSelection::timesigcontainer::const_iterator i =
                m_clipboard->getTimeSignatureSelection().begin();
            i != m_clipboard->getTimeSignatureSelection().end(); ++i) {

        timeT t = i->first;
        int n = m_composition->getTimeSignatureNumberAt(t);

        if (n >= 0 && m_composition->getTimeSignatureChange(n).first == t) {
            m_composition->removeTimeSignature(n);
        }
    }

    for (TempoSelection::tempocontainer::const_iterator i =
                m_clipboard->getTempoSelection().begin();
            i != m_clipboard->getTempoSelection().end(); ++i) {

        timeT t = i->first;
        int n = m_composition->getTempoChangeNumberAt(t);

        if (n >= 0 && m_composition->getTempoChange(n).first == t) {
            m_composition->removeTempoChange(n);
        }
    }
}

}

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