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/* -*- 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.
This program is Copyright 2000-2008
Guillaume Laurent <[email protected]>,
Chris Cannam <[email protected]>,
Richard Bown <[email protected]>
The moral rights of Guillaume Laurent, Chris Cannam, and Richard
Bown to claim authorship of this work have been asserted.
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 "PluginControl.h"
#include "Rotary.h"
#include "misc/Strings.h"
#include "base/AudioPluginInstance.h"
#include "gui/general/GUIPalette.h"
#include "gui/studio/AudioPluginManager.h"
#include "gui/widgets/Rotary.h"
#include <qfont.h>
#include <qhbox.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qobject.h>
#include <qstring.h>
#include <qwidget.h>
#include <cmath>
namespace Rosegarden
{
PluginControl::PluginControl(QWidget *parent,
QGridLayout *layout,
ControlType type,
PluginPort *port,
AudioPluginManager *aPM,
int index,
float initialValue,
bool showBounds,
bool hidden):
QObject(parent),
m_layout(layout),
m_type(type),
m_port(port),
m_pluginManager(aPM),
m_index(index)
{
QFont plainFont;
plainFont.setPointSize((plainFont.pointSize() * 9 ) / 10);
QLabel *controlTitle =
new QLabel(QString("%1 ").arg(strtoqstr(port->getName())), parent);
controlTitle->setFont(plainFont);
if (type == Rotary) {
float lowerBound = port->getLowerBound();
float upperBound = port->getUpperBound();
// Default value was already handled when calling this constructor
if (lowerBound > upperBound) {
float swap = upperBound;
upperBound = lowerBound;
lowerBound = swap;
}
float step = (upperBound - lowerBound) / 100.0;
float pageStep = step * 10.f;
Rotary::TickMode ticks = Rotary::PageStepTicks;
bool snapToTicks = false;
if (port->getDisplayHint() & PluginPort::Integer) {
step = 1.0;
ticks = Rotary::StepTicks;
if (upperBound - lowerBound > 30.0)
pageStep = 10.0;
snapToTicks = true;
}
if (port->getDisplayHint() & PluginPort::Toggled) {
lowerBound = -0.0001;
upperBound = 1.0001;
step = 1.0;
pageStep = 1.0;
ticks = Rotary::StepTicks;
snapToTicks = true;
}
float displayLower = lowerBound, displayUpper = upperBound;
bool logarithmic = (port->getDisplayHint() & PluginPort::Logarithmic);
if (logarithmic) {
float logthresh = -10;
float thresh = powf(10, logthresh);
if (lowerBound > thresh) lowerBound = log10f(lowerBound);
else {
if (upperBound > 1) lowerBound = 0;
else lowerBound = logthresh;
}
if (upperBound > thresh) upperBound = log10f(upperBound);
else upperBound = logthresh;
step = (upperBound - lowerBound) / 100.0;
pageStep = step * 10.f;
initialValue = log10f(initialValue);
}
QLabel *low;
if (port->getDisplayHint() &
(PluginPort::Integer | PluginPort::Toggled)) {
low = new QLabel(QString("%1").arg(int(displayLower)), parent);
} else {
low = new QLabel(QString("%1").arg(displayLower), parent);
}
low->setFont(plainFont);
// std::cerr << "port " << port->getName() << ": lower bound "
// << displayLower << ", upper bound " << displayUpper
// << ", logarithmic " << logarithmic << ", default "
// << initialValue << ", actual lower " << lowerBound
// << ", actual upper " << upperBound << ", step "
// << step << std::endl;
m_dial = new ::Rosegarden::Rotary(parent,
lowerBound, // min
upperBound, // max
step, // step
pageStep, // page step
initialValue, // initial
30, // size
ticks,
snapToTicks,
false, // centred
logarithmic);
m_dial->setKnobColour(GUIPalette::getColour(GUIPalette::RotaryPlugin));
connect(m_dial, SIGNAL(valueChanged(float)),
this, SLOT(slotValueChanged(float)));
QLabel *upp;
if (port->getDisplayHint() &
(PluginPort::Integer | PluginPort::Toggled)) {
upp = new QLabel(QString("%1").arg(int(displayUpper)), parent);
} else {
upp = new QLabel(QString("%1").arg(displayUpper), parent);
}
upp->setFont(plainFont);
QWidgetItem *item;
if (!hidden) {
controlTitle->show();
item = new QWidgetItem(controlTitle);
item->setAlignment(Qt::AlignRight | Qt::AlignBottom);
m_layout->addItem(item);
} else {
controlTitle->hide();
}
if (showBounds && !hidden) {
low->show();
item = new QWidgetItem(low);
item->setAlignment(Qt::AlignRight | Qt::AlignBottom);
m_layout->addItem(item);
} else {
low->hide();
}
if (!hidden) {
m_dial->show();
item = new QWidgetItem(m_dial);
item->setAlignment(Qt::AlignCenter);
m_layout->addItem(item);
} else {
m_dial->hide();
}
if (showBounds && !hidden) {
upp->show();
item = new QWidgetItem(upp);
item->setAlignment(Qt::AlignLeft | Qt::AlignBottom);
m_layout->addItem(item);
} else {
upp->hide();
}
}
}
void
PluginControl::setValue(float value, bool emitSignals)
{
if (!emitSignals)
m_dial->blockSignals(true);
m_dial->setPosition(value);
if (!emitSignals)
m_dial->blockSignals(false);
else
emit valueChanged(value);
}
float
PluginControl::getValue() const
{
return m_dial == 0 ? 0 : m_dial->getPosition();
}
void
PluginControl::slotValueChanged(float value)
{
emit valueChanged(value);
}
}
#include "PluginControl.moc"
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