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#include <qslider.h>
#include <qhbox.h>
#include <qlabel.h>
#include <qcheckbox.h>
#include <qpushbutton.h>
#include <stdio.h>
#include <math.h>
#include "midislider.h"
#include "synthdata.h"
#include "midiwidget.h"
#include "midiguicomponent.h"
MidiSlider::MidiSlider(QObject *parentModule, float minValue, float maxValue, float pageStep, float value,
QSlider::Orientation orientation, QWidget * parent, const char * name,
SynthData *p_synthdata, float *p_valueRef, bool p_isLog)
: MidiGUIcomponent(parentModule, p_synthdata, parent, name) {
QString qs;
componentType = GUIcomponentType_slider;
valueRef = p_valueRef;
min = minValue;
max = maxValue;
initial_min = minValue;
initial_max = maxValue;
isLog = p_isLog;
isMaster = true;
setSpacing(1);
new QWidget(this);
QVBox *sliderBox = new QVBox(this);
sliderBox->setSizePolicy(QSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Fixed));
QHBox *sliderNameBox = new QHBox(sliderBox);
sliderNameBox->setMargin(1);
new QWidget(sliderNameBox);
QLabel *nameLabel = new QLabel(sliderNameBox);
new QWidget(sliderNameBox);
QHBox *sliderLabels = new QHBox(sliderBox);
qs.sprintf("Min: %7.3f", minValue);
minLabel = new QLabel(qs, sliderLabels);
new QWidget(sliderLabels);
valueLabel = new QLabel(" ", sliderLabels);
if (name) {
qs.sprintf(" %s ", name);
} else {
qs.sprintf(" ");
}
nameLabel->setText(qs);
new QWidget(sliderLabels);
qs.sprintf("Max: %7.3f", maxValue);
maxLabel = new QLabel(qs, sliderLabels);
if (name) {
nameLabel->setFixedHeight(nameLabel->sizeHint().height());
}
nameLabel->setFixedHeight(valueLabel->sizeHint().height());
valueLabel->setFixedHeight(valueLabel->sizeHint().height());
minLabel->setFixedHeight(minLabel->sizeHint().height());
maxLabel->setFixedHeight(maxLabel->sizeHint().height());
slider = new QSlider(int(SLIDER_SCALE * minValue), int(SLIDER_SCALE * maxValue), int(SLIDER_SCALE * pageStep),
int(SLIDER_SCALE * value), orientation, sliderBox);
slider->setFixedHeight(slider->sizeHint().height());
QObject::connect(slider, SIGNAL(valueChanged(int)), this, SLOT(updateValue(int)));
slider->setValue(int(SLIDER_SCALE * value));
setLogMode(isLog);
qs.sprintf(" %7.3f ", *valueRef);
valueLabel->setText(qs);
}
MidiSlider::~MidiSlider(){
}
void MidiSlider::setMidiValue(int value) {
if (!controllerOK) {
controllerOK = abs(getMidiValue() - value) < 4;
}
if (controllerOK) {
if (midiSign == 1) {
slider->setValue( slider->minValue() + int(float(slider->maxValue() - slider->minValue()) * value / 127.0));
} else {
slider->setValue( slider->maxValue() - int(float(slider->maxValue() - slider->minValue()) * value / 127.0));
}
}
}
void MidiSlider::updateValue(int value) {
QString qs;
if (isLog) {
*valueRef = exp((float)value / SLIDER_SCALE);
} else {
*valueRef = (float)value / SLIDER_SCALE;
}
qs.sprintf(" %7.3f ", *valueRef);
valueLabel->setText(qs);
emit valueChanged(value);
emit guiComponentTouched();
}
void MidiSlider::updateSlider(int value) {
slider->setValue(value);
}
int MidiSlider::getMidiValue() {
float x;
x = float(slider->value() - slider->minValue()) * 127.0 / float(slider->maxValue() - slider->minValue());
return(int(rint(x)));
}
void MidiSlider::setLogMode(bool on) {
float log_min, log_val, val;
// fprintf(stderr, "MidiSlider::setLogMode(%d)\n", on);
if (isMaster && (isLog != on)) {
// fprintf(stderr, "emit logModeChanged(%d)\n", on);
emit logModeChanged(on);
}
isLog = on;
val = *valueRef;
// fprintf(stderr, "val: %f\n", val);
if (isLog) {
log_min = (min > 1e-4) ? min : 1e-4;
log_val = (val > 1e-4 ) ? val : 1e-4;
slider->setMinValue(int(SLIDER_SCALE * log(log_min)));
slider->setMaxValue(int(SLIDER_SCALE * log(max)));
slider->setValue(int(SLIDER_SCALE * log(log_val)));
} else {
slider->setMinValue(int(SLIDER_SCALE * min));
slider->setMaxValue(int(SLIDER_SCALE * max));
slider->setValue(int(SLIDER_SCALE * val));
}
// fprintf(stderr, "end of setLogMode\n");
}
void MidiSlider::setNewMin() {
float val;
QString qs;
val = *valueRef;
min = val;
qs.sprintf("Min: %7.3f", min);
minLabel->setText(qs);
if (isLog) {
slider->setMinValue(int(SLIDER_SCALE * log(min)));
slider->setValue(int(SLIDER_SCALE * log(val)));
} else {
slider->setMinValue(int(SLIDER_SCALE * min));
slider->setValue(int(SLIDER_SCALE * val));
}
controllerOK = false;
}
void MidiSlider::setNewMax() {
float val;
QString qs;
val = *valueRef;
max = val;
qs.sprintf("Max: %7.3f", max);
maxLabel->setText(qs);
if (isLog) {
slider->setMaxValue(int(SLIDER_SCALE * log(max)));
slider->setValue(int(SLIDER_SCALE * log(val)));
} else {
slider->setMaxValue(int(SLIDER_SCALE * max));
slider->setValue(int(SLIDER_SCALE * val));
}
controllerOK = false;
}
void MidiSlider::setNewMin(int p_min) {
QString qs;
min = (isLog) ? exp((double)p_min / SLIDER_SCALE) : (double)p_min / SLIDER_SCALE;
qs.sprintf("Min: %7.3f", min);
minLabel->setText(qs);
slider->setMinValue(int(p_min));
controllerOK = false;
}
void MidiSlider::setNewMax(int p_max) {
QString qs;
max = (isLog) ? exp((double)p_max / SLIDER_SCALE) : (double)p_max / SLIDER_SCALE;
qs.sprintf("Max: %7.3f", max);
maxLabel->setText(qs);
slider->setMaxValue(int(p_max));
controllerOK = false;
}
void MidiSlider::setInitialMinMax() {
float val;
QString qs;
val = *valueRef;
min = initial_min;
max = initial_max;
qs.sprintf("Min: %7.3f", min);
minLabel->setText(qs);
qs.sprintf("Max: %7.3f", max);
maxLabel->setText(qs);
slider->setMinValue(int(SLIDER_SCALE * min));
slider->setMaxValue(int(SLIDER_SCALE * max));
slider->setValue(int(SLIDER_SCALE * val));
controllerOK = false;
}
float MidiSlider::getValue() {
return(*valueRef);
}
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