midiprogramseditor.cpp

LINUX下的混音软件

    int msb;

    try {
        msb = ensureUniqueMSB(value, value > getCurrentBank()->getMSB());
    } catch (bool) {
        msb = getCurrentBank()->getMSB();
    }

    MidiBank newBank(m_percussion->isChecked(),
                     msb,
                     m_lsb->value());

    modifyCurrentPrograms(*getCurrentBank(), newBank);

    m_msb->setValue(msb);
    *getCurrentBank() = newBank;

    m_msb->blockSignals(false);

    m_bankEditor->setModified(true);
}

void
MidiProgramsEditor::slotNewLSB(int value)
{
    RG_DEBUG << "MidiProgramsEditor::slotNewLSB(" << value << ")\n";

    m_lsb->blockSignals(true);

    int lsb;

    try {
        lsb = ensureUniqueLSB(value, value > getCurrentBank()->getLSB());
    } catch (bool) {
        lsb = getCurrentBank()->getLSB();
    }

    MidiBank newBank(m_percussion->isChecked(),
                     m_msb->value(),
                     lsb);

    modifyCurrentPrograms(*getCurrentBank(), newBank);

    m_lsb->setValue(lsb);
    *getCurrentBank() = newBank;

    m_lsb->blockSignals(false);

    m_bankEditor->setModified(true);
}

struct ProgramCmp
{
    bool operator()(const Rosegarden::MidiProgram &p1,
                    const Rosegarden::MidiProgram &p2)
    {
        if (p1.getProgram() == p2.getProgram()) {
            const Rosegarden::MidiBank &b1(p1.getBank());
            const Rosegarden::MidiBank &b2(p2.getBank());
            if (b1.getMSB() == b2.getMSB())
                if (b1.getLSB() == b2.getLSB()) 
                    return ((b1.isPercussion() ? 1 : 0) < (b2.isPercussion() ? 1 : 0));
                else return (b1.getLSB() < b2.getLSB());
            else return (b1.getMSB() < b2.getMSB());
        } else return (p1.getProgram() < p2.getProgram());
    }
};

void
MidiProgramsEditor::slotNameChanged(const QString& programName)
{
    const KLineEdit* lineEdit = dynamic_cast<const KLineEdit*>(sender());
    if (!lineEdit) {
        RG_DEBUG << "MidiProgramsEditor::slotProgramChanged() : %%% ERROR - signal sender is not a KLineEdit\n";
        return ;
    }

    QString senderName = sender()->name();

    // Adjust value back to zero rated
    //
    unsigned int id = senderName.toUInt() - 1;

    RG_DEBUG << "MidiProgramsEditor::slotNameChanged("
    << programName << ") : id = " << id << endl;

    MidiProgram *program = getProgram(*getCurrentBank(), id);

    if (program == 0) {
        // Do nothing if program name is empty
        if (programName.isEmpty())
            return ;

        program = new MidiProgram(*getCurrentBank(), id);
        m_programList.push_back(*program);

        // Sort the program list by id
        std::sort(m_programList.begin(), m_programList.end(), ProgramCmp());

        // Now, get with the program
        //
        program = getProgram(*getCurrentBank(), id);
    } else {
        // If we've found a program and the label is now empty
        // then remove it from the program list.
        //
        if (programName.isEmpty()) {
            ProgramList::iterator it = m_programList.begin();
            ProgramList tmpProg;

            for (; it != m_programList.end(); it++) {
                if (((unsigned int)it->getProgram()) == id) {
                    m_programList.erase(it);
                    m_bankEditor->setModified(true);
                    RG_DEBUG << "deleting empty program (" << id << ")" << endl;
                    return ;
                }
            }
        }
    }

    if (qstrtostr(programName) != program->getName()) {
        program->setName(qstrtostr(programName));
        m_bankEditor->setModified(true);
    }
}

void
MidiProgramsEditor::slotEntryButtonPressed()
{
    QPushButton* button = dynamic_cast<QPushButton*>(const_cast<QObject *>(sender()));
    if (!button) {
        RG_DEBUG << "MidiProgramsEditor::slotEntryButtonPressed() : %%% ERROR - signal sender is not a QPushButton\n";
        return ;
    }

    QString senderName = button->name();

    if (!m_device)
        return ;

    const KeyMappingList &kml = m_device->getKeyMappings();
    if (kml.empty())
        return ;

    // Adjust value back to zero rated
    //
    unsigned int id = senderName.toUInt() - 1;
    MidiProgram *program = getProgram(*getCurrentBank(), id);
    if (!program)
        return ;
    m_currentMenuProgram = id;

    RosegardenPopupMenu *menu = new RosegardenPopupMenu(button);

    const MidiKeyMapping *currentMapping =
        m_device->getKeyMappingForProgram(*program);
    int currentEntry = 0;

    menu->insertItem(i18n("<no key mapping>"), this,
                     SLOT(slotEntryMenuItemSelected(int)), 0, 0);
    menu->setItemParameter(0, 0);

    for (int i = 0; i < kml.size(); ++i) {
        menu->insertItem(strtoqstr(kml[i].getName()),
                         this, SLOT(slotEntryMenuItemSelected(int)),
                         0, i + 1);
        menu->setItemParameter(i + 1, i + 1);
        if (currentMapping && (kml[i] == *currentMapping))
            currentEntry = i + 1;
    }

    int itemHeight = menu->itemHeight(0) + 2;
    QPoint pos = QCursor::pos();

    pos.rx() -= 10;
    pos.ry() -= (itemHeight / 2 + currentEntry * itemHeight);

    menu->popup(pos);
}

void
MidiProgramsEditor::slotEntryMenuItemSelected(int i)
{
    if (!m_device)
        return ;

    const KeyMappingList &kml = m_device->getKeyMappings();
    if (kml.empty())
        return ;

    MidiProgram *program = getProgram(*getCurrentBank(), m_currentMenuProgram);
    if (!program)
        return ;

    std::string newMapping;

    if (i == 0) { // no key mapping
        newMapping = "";
    } else {
        --i;
        if (i < kml.size()) {
            newMapping = kml[i].getName();
        }
    }

    m_device->setKeyMappingForProgram(*program, newMapping);
    QString pixmapDir = KGlobal::dirs()->findResource("appdata", "pixmaps/");
    bool haveKeyMappings = (m_device->getKeyMappings().size() > 0);
    QPushButton *btn = getEntryButton(m_currentMenuProgram);

    if (newMapping.empty()) {
        QString file = pixmapDir + "/toolbar/key-white.png";
        if (QFile(file).exists()) {
            btn->setPixmap(QPixmap(file));
        }
        QToolTip::remove
            (btn);
    } else {
        QString file = pixmapDir + "/toolbar/key-green.png";
        if (QFile(file).exists()) {
            btn->setPixmap(QPixmap(file));
        }
        QToolTip::add
            (btn, i18n("Key Mapping: %1").arg(strtoqstr(newMapping)));
    }
    btn->setEnabled(haveKeyMappings);
}

int
MidiProgramsEditor::ensureUniqueMSB(int msb, bool ascending)
{
    int newMSB = msb;
    while (banklistContains(MidiBank(m_percussion->isChecked(),
                                     newMSB, m_lsb->value()))
            && newMSB < 128
            && newMSB > -1)
        if (ascending)
            newMSB++;
        else
            newMSB--;

    if (newMSB == -1 || newMSB == 128)
        throw false;

    return newMSB;
}

int
MidiProgramsEditor::ensureUniqueLSB(int lsb, bool ascending)
{
    int newLSB = lsb;
    while (banklistContains(MidiBank(m_percussion->isChecked(),
                                     m_msb->value(), newLSB))
            && newLSB < 128
            && newLSB > -1)
        if (ascending)
            newLSB++;
        else
            newLSB--;

    if (newLSB == -1 || newLSB == 128)
        throw false;

    return newLSB;
}

bool
MidiProgramsEditor::banklistContains(const MidiBank &bank)
{
    BankList::iterator it;

    for (it = m_bankList.begin(); it != m_bankList.end(); it++)
        if (*it == bank)
            return true;

    return false;
}

MidiProgram*
MidiProgramsEditor::getProgram(const MidiBank &bank, int programNo)
{
    ProgramList::iterator it = m_programList.begin();

    for (; it != m_programList.end(); it++) {
        if (it->getBank() == bank && it->getProgram() == programNo)
            return &(*it);
    }

    return 0;
}

void
MidiProgramsEditor::setBankName(const QString& s)
{
    setTitle(s);
}

void MidiProgramsEditor::blockAllSignals(bool block)
{
    const QObjectList* allChildren = queryList("KLineEdit", "[0-9]+");
    QObjectListIt it(*allChildren);
    QObject *obj;

    while ( (obj = it.current()) != 0 ) {
        obj->blockSignals(block);
        ++it;
    }

    m_msb->blockSignals(block);
    m_lsb->blockSignals(block);
}

}
#include "MidiProgramsEditor.moc"