trackbuttons.cpp

LINUX下的混音软件

            for (Composition::trackcontainer::iterator tit =
                     comp.getTracks().begin();
                 tit != comp.getTracks().end(); ++tit) {

                if (tit->second->getInstrument() == (*it)->getId()) {
                    instrUsedByAnyone = true;
                    break;
                }
            }
        }

        QIconSet iconSet
            (connected ?
             (instrUsedByAnyone ?
              instrUsedByMe ?
              connectedSelectedPixmap :
              connectedUsedPixmap : connectedPixmap) :
             (instrUsedByAnyone ?
              instrUsedByMe ?
              unconnectedSelectedPixmap :
              unconnectedUsedPixmap : unconnectedPixmap));

        if (pname != "")
            iname += " (" + pname + ")";

        instrumentSubMenus[instrumentSubMenus.size() - 1]->insertItem(iconSet, iname, i++);
    }

}

void
TrackButtons::slotInstrumentPopupActivated(int item)
{
    RG_DEBUG << "TrackButtons::slotInstrumentPopupActivated " << item << endl;

    Composition &comp = m_doc->getComposition();
    Studio &studio = m_doc->getStudio();

    Instrument *inst = studio.getInstrumentFromList(item);

    RG_DEBUG << "TrackButtons::slotInstrumentPopupActivated: instrument " << inst << endl;

    if (inst != 0) {
        Track *track = comp.getTrackByPosition(m_popupItem);

        if (track != 0) {
            track->setInstrument(inst->getId());

            // select instrument
            emit instrumentSelected((int)inst->getId());

            m_trackLabels[m_popupItem]->getInstrumentLabel()->
                setText(strtoqstr(inst->getPresentationName()));

            // reset the alternative label
            m_trackLabels[m_popupItem]->clearAlternativeLabel();

            // Now see if the program is being shown for this instrument
            // and if so reset the label
            //
            if (inst->sendsProgramChange())
                m_trackLabels[m_popupItem]->setAlternativeLabel(strtoqstr(inst->getProgramName()));

            if (inst->getType() == Instrument::Audio) {
                m_recordLeds[m_popupItem]->setColor
                (GUIPalette::getColour
                 (GUIPalette::RecordAudioTrackLED));
            } else {
                m_recordLeds[m_popupItem]->setColor
                (GUIPalette::getColour
                 (GUIPalette::RecordMIDITrackLED));
            }
        } else
            RG_DEBUG << "slotInstrumentPopupActivated() - can't find item!\n";
    } else
        RG_DEBUG << "slotInstrumentPopupActivated() - can't find item!\n";

}

void
TrackButtons::changeTrackInstrumentLabels(TrackLabel::InstrumentTrackLabels label)
{
    // Set new label
    m_trackInstrumentLabels = label;

    // update and reconnect with new value
    for (int i = 0; i < (int)m_tracks; i++) {
        m_trackLabels[i]->showLabel(label);
    }
}

void
TrackButtons::changeInstrumentLabel(InstrumentId id, QString label)
{
    Composition &comp = m_doc->getComposition();
    Track *track;

    for (int i = 0; i < (int)m_tracks; i++) {
        track = comp.getTrackByPosition(i);

        if (track && track->getInstrument() == id) {

            m_trackLabels[i]->setAlternativeLabel(label);

            Instrument *ins = m_doc->getStudio().
                              getInstrumentById(track->getInstrument());

            if (ins && ins->getType() == Instrument::Audio) {
                m_recordLeds[i]->setColor
                (GUIPalette::getColour
                 (GUIPalette::RecordAudioTrackLED));
            } else {
                m_recordLeds[i]->setColor
                (GUIPalette::getColour
                 (GUIPalette::RecordMIDITrackLED));
            }
        }
    }
}

void
TrackButtons::changeTrackLabel(TrackId id, QString label)
{
    Composition &comp = m_doc->getComposition();
    Track *track;

    for (int i = 0; i < (int)m_tracks; i++) {
        track = comp.getTrackByPosition(i);
        if (track && track->getId() == id) {
            if (m_trackLabels[i]->getTrackLabel()->text() != label) {
                m_trackLabels[i]->getTrackLabel()->setText(label);
                emit widthChanged();
                emit nameChanged();
            }
            return ;
        }
    }
}

void
TrackButtons::slotSynchroniseWithComposition()
{
    Composition &comp = m_doc->getComposition();
    Studio &studio = m_doc->getStudio();
    Track *track;

    for (int i = 0; i < (int)m_tracks; i++) {
        track = comp.getTrackByPosition(i);

        if (track) {
            if (track->isMuted())
                m_muteLeds[i]->off();
            else
                m_muteLeds[i]->on();

            Instrument *ins = studio.
                              getInstrumentById(track->getInstrument());

            QString instrumentName(i18n("<no instrument>"));
            if (ins)
                instrumentName = strtoqstr(ins->getPresentationName());

            m_trackLabels[i]->getInstrumentLabel()->setText(instrumentName);

            setRecordButton(i, comp.isTrackRecording(track->getId()));

            if (ins && ins->getType() == Instrument::Audio) {
                m_recordLeds[i]->setColor
                (GUIPalette::getColour
                 (GUIPalette::RecordAudioTrackLED));
            } else {
                m_recordLeds[i]->setColor
                (GUIPalette::getColour
                 (GUIPalette::RecordMIDITrackLED));
            }
        }
    }
}

void
TrackButtons::slotLabelSelected(int position)
{
    Track *track =
        m_doc->getComposition().getTrackByPosition(position);

    if (track) {
        emit trackSelected(track->getId());
    }
}

void
TrackButtons::setMuteButton(TrackId track, bool value)
{
    Track *trackObj = m_doc->getComposition().getTrackById(track);
    if (trackObj == 0)
        return ;

    int pos = trackObj->getPosition();

    RG_DEBUG << "TrackButtons::setMuteButton() trackId = "
    << track << ", pos = " << pos << endl;

    m_muteLeds[pos]->setState(value ? KLed::Off : KLed::On);
}

void
TrackButtons::slotTrackInstrumentSelection(TrackId trackId, int item)
{
    RG_DEBUG << "TrackButtons::slotTrackInstrumentSelection(" << trackId << ")\n";

    Composition &comp = m_doc->getComposition();
    int position = comp.getTrackById(trackId)->getPosition();
    m_popupItem = position;
    slotInstrumentPopupActivated( item );
}

QFrame* TrackButtons::makeButton(Rosegarden::TrackId trackId)
{
    // The buttonGap sets up the sizes of the buttons
    //
    static const int buttonGap = 8;

    QFrame *trackHBox = 0;

    KLedButton *mute = 0;
    KLedButton *record = 0;

    TrackVUMeter *vuMeter = 0;
    TrackLabel *trackLabel = 0;

    int vuWidth = 20;
    int vuSpacing = 2;
    int labelWidth = m_trackLabelWidth - ( (m_cellSize - buttonGap) * 2 +
                                            vuSpacing * 2 + vuWidth );

    // Set the label from the Track object on the Composition
    //
    Rosegarden::Track *track = m_doc->getComposition().getTrackById(trackId);

    if (track == 0) return 0;

    // Create a horizontal box for each track
    //
    trackHBox = new QFrame(this);
    QHBoxLayout *hblayout = new QHBoxLayout(trackHBox);
        
    trackHBox->setMinimumSize(labelWidth, m_cellSize - m_borderGap);
    trackHBox->setFixedHeight(m_cellSize - m_borderGap);

    // Try a style for the box
    //
    trackHBox->setFrameStyle(StyledPanel);
    trackHBox->setFrameShape(StyledPanel);
    trackHBox->setFrameShadow(Raised);

    // Insert a little gap
    hblayout->addSpacing(vuSpacing);

    // Create a VU meter
    vuMeter = new TrackVUMeter(trackHBox,
                               VUMeter::PeakHold,
                               vuWidth,
                               buttonGap,
                               track->getPosition());

    m_trackMeters.push_back(vuMeter);

    hblayout->addWidget(vuMeter);

    // Create another little gap
    hblayout->addSpacing(vuSpacing);

    //
    // 'mute' and 'record' leds
    //

    mute = new KLedButton(Rosegarden::GUIPalette::getColour
              (Rosegarden::GUIPalette::MuteTrackLED), trackHBox);
    QToolTip::add(mute, i18n("Mute track"));
    hblayout->addWidget(mute);

    record = new KLedButton(Rosegarden::GUIPalette::getColour
                (Rosegarden::GUIPalette::RecordMIDITrackLED), trackHBox);
    QToolTip::add(record, i18n("Record on this track"));
    hblayout->addWidget(record);

    record->setLook(KLed::Sunken);
    mute->setLook(KLed::Sunken);
    record->off();

    // Connect them to their sigmappers
    connect(record, SIGNAL(stateChanged(bool)),
            m_recordSigMapper, SLOT(map()));
    connect(mute, SIGNAL(stateChanged(bool)),
            m_muteSigMapper, SLOT(map()));
    m_recordSigMapper->setMapping(record, track->getPosition());
    m_muteSigMapper->setMapping(mute, track->getPosition());

    // Store the KLedButton
    //
    m_muteLeds.push_back(mute);
    m_recordLeds.push_back(record);

    //
    // Track label
    //
    trackLabel = new TrackLabel(trackId, track->getPosition(), trackHBox);
    hblayout->addWidget(trackLabel);

    if (track->getLabel() == std::string("")) {
    Rosegarden::Instrument *ins =
        m_doc->getStudio().getInstrumentById(track->getInstrument());
    if (ins && ins->getType() == Rosegarden::Instrument::Audio) {
        trackLabel->getTrackLabel()->setText(i18n("<untitled audio>"));
    } else {
        trackLabel->getTrackLabel()->setText(i18n("<untitled>"));
    }
    }
    else
        trackLabel->getTrackLabel()->setText(strtoqstr(track->getLabel()));

    trackLabel->setFixedSize(labelWidth, m_cellSize - buttonGap);
    trackLabel->setFixedHeight(m_cellSize - buttonGap);
    trackLabel->setIndent(7);

    connect(trackLabel, SIGNAL(renameTrack(QString, TrackId)),
            SLOT(slotRenameTrack(QString, TrackId)));

    // Store the TrackLabel pointer
    //
    m_trackLabels.push_back(trackLabel);

    // Connect it
    setButtonMapping(trackLabel, trackId);

    connect(trackLabel, SIGNAL(changeToInstrumentList()),
            m_instListSigMapper, SLOT(map()));
    connect(trackLabel, SIGNAL(clicked()),
            m_clickedSigMapper, SLOT(map()));

    //
    // instrument label
    //
    Rosegarden::Instrument *ins =
        m_doc->getStudio().getInstrumentById(track->getInstrument());

    QString instrumentName(i18n("<no instrument>"));
    if (ins) instrumentName = strtoqstr(ins->getPresentationName());

    // Set label to program change if it's being sent
    //
    if (ins != 0 && ins->sendsProgramChange())
        trackLabel->setAlternativeLabel(strtoqstr(ins->getProgramName()));

    trackLabel->showLabel(m_trackInstrumentLabels);

    mute->setFixedSize(m_cellSize - buttonGap, m_cellSize - buttonGap);
    record->setFixedSize(m_cellSize - buttonGap, m_cellSize - buttonGap);

    // set the mute button
    //
    if (track->isMuted())
        mute->off();

    return trackHBox;
}

}
#include "TrackButtons.moc"