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#include "control/controlbehavior.h"
#include "control/control.h"
bool ControlNumericBehavior::setFilter(double* dValue) {
Q_UNUSED(dValue);
return true;
}
double ControlNumericBehavior::defaultValue(double dDefault) const {
return dDefault;
}
double ControlNumericBehavior::valueToWidgetParameter(double dValue) {
return dValue;
}
double ControlNumericBehavior::widgetParameterToValue(double dParam) {
return dParam;
}
double ControlNumericBehavior::valueToMidiParameter(double dValue) {
return dValue;
}
void ControlNumericBehavior::setValueFromMidiParameter(MidiOpCode o, double dParam,
ControlDoublePrivate* pControl) {
Q_UNUSED(o);
pControl->set(dParam, NULL);
}
ControlPotmeterBehavior::ControlPotmeterBehavior(double dMinValue, double dMaxValue)
: m_dMinValue(dMinValue),
m_dMaxValue(dMaxValue),
m_dValueRange(m_dMaxValue - m_dMinValue),
m_dDefaultValue(m_dMinValue + 0.5 * m_dValueRange) {
}
ControlPotmeterBehavior::~ControlPotmeterBehavior() {
}
bool ControlPotmeterBehavior::setFilter(double* dValue) {
Q_UNUSED(dValue);
return true;
}
double ControlPotmeterBehavior::defaultValue(double dDefault) const {
Q_UNUSED(dDefault);
return m_dDefaultValue;
}
double ControlPotmeterBehavior::valueToWidgetParameter(double dValue) {
if (dValue > m_dMaxValue) {
dValue = m_dMaxValue;
} else if (dValue < m_dMinValue) {
dValue = m_dMinValue;
}
if (m_dValueRange == 0.0) {
return 0;
}
return (dValue - m_dMinValue) / m_dValueRange;
}
double ControlPotmeterBehavior::widgetParameterToValue(double dParam) {
return m_dMinValue + dParam * m_dValueRange;
}
double ControlPotmeterBehavior::valueToMidiParameter(double dValue) {
// 7-bit MIDI has 128 values [0, 127]. This means there is no such thing as
// center. The industry convention is that 64 is center. We fake things a
// little bit here to make that the case. This piece-wise function is linear
// from 0 to 64 with slope 128 and from 64 to 127 with slope 126.
double dNorm = valueToWidgetParameter(dValue);
return dNorm < 0.5 ? dNorm * 128.0 : dNorm * 126.0 + 1.0;
}
void ControlPotmeterBehavior::setValueFromMidiParameter(MidiOpCode o, double dParam,
ControlDoublePrivate* pControl) {
Q_UNUSED(o);
double dNorm = dParam < 64 ? dParam / 128.0 : (dParam - 1.0) / 126.0;
pControl->set(widgetParameterToValue(dNorm), NULL);
}
#define maxPosition 1.0
#define minPosition 0.0
#define middlePosition ((maxPosition-minPosition)/2.0)
#define positionrange (maxPosition-minPosition)
ControlLogpotmeterBehavior::ControlLogpotmeterBehavior(double dMaxValue)
: ControlPotmeterBehavior(0, dMaxValue) {
if (dMaxValue == 1.0) {
m_bTwoState = false;
m_dB1 = log10(2.0) / maxPosition;
} else {
m_bTwoState = true;
m_dB1 = log10(2.0) / middlePosition;
m_dB2 = log10(dMaxValue) / (maxPosition - middlePosition);
}
}
ControlLogpotmeterBehavior::~ControlLogpotmeterBehavior() {
}
double ControlLogpotmeterBehavior::defaultValue(double dDefault) const {
Q_UNUSED(dDefault);
return 1.0;
}
double ControlLogpotmeterBehavior::valueToWidgetParameter(double dValue) {
if (dValue > m_dMaxValue) {
dValue = m_dMaxValue;
} else if (dValue < m_dMinValue) {
dValue = m_dMinValue;
}
if (!m_bTwoState) {
return log10(dValue + 1) / m_dB1;
} else {
if (dValue > 1.0) {
return log10(dValue) / m_dB2 + middlePosition;
} else {
return log10(dValue + 1.0) / m_dB1;
}
}
}
double ControlLogpotmeterBehavior::widgetParameterToValue(double dParam) {
if (!m_bTwoState) {
return pow(10.0, m_dB1 * dParam) - 1.0;
} else {
if (dParam <= middlePosition) {
return pow(10.0, m_dB1 * dParam) - 1;
} else {
return pow(10.0, m_dB2 * (dParam - middlePosition));
}
}
}
ControlLinPotmeterBehavior::ControlLinPotmeterBehavior(double dMinValue, double dMaxValue)
: ControlPotmeterBehavior(dMinValue, dMaxValue) {
}
ControlLinPotmeterBehavior::~ControlLinPotmeterBehavior() {
}
double ControlLinPotmeterBehavior::valueToMidiParameter(double dValue) {
// 7-bit MIDI has 128 values [0, 127]. This means there is no such thing as
// center. The industry convention is that 64 is center. We fake things a
// little bit here to make that the case. This function is linear from [0,
// 127.0/128.0] with slope 128 and then cuts off at 127 from 127.0/128.0 to
// 1.0. from 0 to 64 with slope 128 and from 64 to 127 with slope 126.
double dNorm = valueToWidgetParameter(dValue);
return math_max(127.0, dNorm * 128.0);
}
void ControlLinPotmeterBehavior::setValueFromMidiParameter(MidiOpCode o, double dParam,
ControlDoublePrivate* pControl) {
Q_UNUSED(o);
double dNorm = dParam / 128.0;
pControl->set(widgetParameterToValue(dNorm), NULL);
}
double ControlTTRotaryBehavior::valueToWidgetParameter(double dValue) {
return (dValue * 200.0 + 64) / 127.0;
}
double ControlTTRotaryBehavior::widgetParameterToValue(double dParam) {
dParam *= 127.0;
// Non-linear scaling
double temp = ((dParam - 64.0) * (dParam - 64.0)) / 64.0;
if (dParam - 64 < 0) {
temp = -temp;
}
return temp;
}
// static
const int ControlPushButtonBehavior::kPowerWindowTimeMillis = 300;
const int ControlPushButtonBehavior::kLongPressLatchingTimeMillis = 300;
ControlPushButtonBehavior::ControlPushButtonBehavior(ButtonMode buttonMode,
int iNumStates)
: m_buttonMode(buttonMode),
m_iNumStates(iNumStates) {
}
void ControlPushButtonBehavior::setValueFromMidiParameter(
MidiOpCode o, double dParam, ControlDoublePrivate* pControl) {
// This block makes push-buttons act as power window buttons.
if (m_buttonMode == POWERWINDOW && m_iNumStates == 2) {
if (o == MIDI_NOTE_ON) {
if (dParam > 0.) {
double value = pControl->get();
pControl->set(!value, NULL);
m_pushTimer.setSingleShot(true);
m_pushTimer.start(kPowerWindowTimeMillis);
}
} else if (o == MIDI_NOTE_OFF) {
if (!m_pushTimer.isActive()) {
pControl->set(0.0, NULL);
}
}
} else if (m_buttonMode == TOGGLE || m_buttonMode == LONGPRESSLATCHING) {
// This block makes push-buttons act as toggle buttons.
if (m_iNumStates > 1) { // multistate button
if (dParam > 0.) { // looking for NOTE_ON doesn't seem to work...
// This is a possibly race condition if another writer wants
// to change the value at the same time. We allow the race here,
// because this is possibly what the user expects if he changes
// the same control from different devices.
double value = pControl->get();
value = (int)(value + 1.) % m_iNumStates;
pControl->set(value, NULL);
if (m_buttonMode == LONGPRESSLATCHING) {
m_pushTimer.setSingleShot(true);
m_pushTimer.start(kLongPressLatchingTimeMillis);
}
} else if (o == MIDI_NOTE_OFF) {
double value = pControl->get();
if (m_buttonMode == LONGPRESSLATCHING &&
m_pushTimer.isActive() && value >= 1.0) {
// revert toggle if button is released too early
value = (int)(value - 1.0) % m_iNumStates;
pControl->set(value, NULL);
}
}
}
} else { // Not a toggle button (trigger only when button pushed)
if (o == MIDI_NOTE_ON) {
double value = pControl->get();
pControl->set(!value, NULL);
} else if (o == MIDI_NOTE_OFF) {
pControl->set(0.0, NULL);
}
}
}
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