void
MIDIInstrumentParameterPanel::setupControllers(MidiDevice *md)
{
RG_DEBUG << "setupControllers()";
if (!md)
return;
// To cut down on flicker, we avoid destroying and recreating
// widgets as far as possible here. If a label already exists,
// we just set its text; if a rotary exists, we only replace it
// if we actually need a different one.
Composition &comp = m_doc->getComposition();
ControlList list = md->getControlParameters();
// Sort by IPB position.
std::sort(list.begin(), list.end(),
ControlParameter::ControlPositionCmp());
int count = 0;
RotaryInfoVector::iterator rotaryIter = m_rotaries.begin();
// For each controller
for (ControlList::iterator it = list.begin();
it != list.end(); ++it) {
if (it->getIPBPosition() == -1)
continue;
// Get the knob colour (even if it's default, because otherwise it turns
// black instead of the default color from the map! it was here the
// whole time, this simple!)
//
const Colour c = comp.getGeneralColourMap().getColourByIndex(
it->getColourIndex());
const QColor knobColour = QColor(c.getRed(), c.getGreen(), c.getBlue());
Rotary *rotary = 0;
// If the Rotary widgets have already been created, update them.
if (rotaryIter != m_rotaries.end()) {
// Update the controller number that is associated with the
// existing rotary widget.
rotaryIter->controller = it->getControllerValue();
// Update the properties of the existing rotary widget.
rotary = rotaryIter->rotary;
rotary->setMinimum(it->getMin());
rotary->setMaximum(it->getMax());
// If the default is 64, then this is most likely a "centered"
// control which should show its distance from the 12 o'clock
// position around the outside.
rotary->setCentered((it->getDefault() == 64));
rotary->setKnobColour(knobColour);
// Update the controller name.
rotaryIter->label->setText(QObject::tr(it->getName().c_str()));
// Next Rotary widget
++rotaryIter;
} else { // Need to create the Rotary widget.
// Create a horizontal box for the Rotary/Label pair.
QWidget *hbox = new QWidget(m_rotaryFrame);
QHBoxLayout *hboxLayout = new QHBoxLayout;
hboxLayout->setSpacing(8);
hboxLayout->setMargin(0);
hbox->setLayout(hboxLayout);
// Add a Rotary
float pageStep = 5.0;
if (it->getMax() - it->getMin() < 10)
pageStep = 1.0;
else if (it->getMax() - it->getMin() < 20)
pageStep = 2.0;
rotary = new Rotary(hbox, // parent
it->getMin(), // minimum
it->getMax(), // maximum
1.0, // step
pageStep, // pageStep
it->getDefault(), // initialPosition
20, // size
Rotary::NoTicks, // ticks
false, // snapToTicks
(it->getDefault() == 64)); // centred, see setCentered() above
rotary->setKnobColour(knobColour);
hboxLayout->addWidget(rotary);
// Add a label
SqueezedLabel *label = new SqueezedLabel(QObject::tr(it->getName().c_str()), hbox);
label->setFont(font());
hboxLayout->addWidget(label);
RG_DEBUG << "setupControllers(): Adding new widget at " << (count / 2) << "," << (count % 2);
// Add the compound (Rotary and Label) widget to the grid.
m_rotaryGrid->addWidget(hbox, count / 2, (count % 2) * 2, Qt::AlignLeft);
hbox->show();
// Add to the Rotary info list
RotaryInfo ri;
ri.rotary = rotary;
ri.label = label;
ri.controller = it->getControllerValue();
m_rotaries.push_back(ri);
// Connect for changes to the Rotary by the user.
connect(rotary, SIGNAL(valueChanged(float)),
m_rotaryMapper, SLOT(map()));
rotaryIter = m_rotaries.end();
}
// Add signal mapping
//
m_rotaryMapper->setMapping(rotary,
int(it->getControllerValue()));
++count;
}
// If there are more rotary widgets than this instrument needs,
// delete them.
if (rotaryIter != m_rotaries.end()) {
for (RotaryInfoVector::iterator it = rotaryIter; it != m_rotaries.end(); ++it) {
// ??? Instead of deleting and recreating, we could hide the
// extras and bring them back when needed.
delete it->rotary;
delete it->label;
}
m_rotaries.resize(count);
}
}
