Mercurial > hg > svgui
view widgets/UnitConverter.cpp @ 1158:8e4b90aeefaa project-file-rework
Tidying
author | Chris Cannam |
---|---|
date | Tue, 25 Oct 2016 15:32:41 +0100 |
parents | 78ae34f388f6 |
children | a34a2a25907c |
line wrap: on
line source
/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. 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 "UnitConverter.h" #include <QSpinBox> #include <QComboBox> #include <QDoubleSpinBox> #include <QLabel> #include <QDialogButtonBox> #include <QGridLayout> #include <QTabWidget> #include "base/Debug.h" #include "base/Pitch.h" #include "base/Preferences.h" using namespace std; static QString pianoNotes[] = { "C", "C# / Db", "D", "D# / Eb", "E", "F", "F# / Gb", "G", "G# / Ab", "A", "A# / Bb", "B" }; UnitConverter::UnitConverter(QWidget *parent) : QDialog(parent) { QGridLayout *maingrid = new QGridLayout; setLayout(maingrid); QTabWidget *tabs = new QTabWidget; maingrid->addWidget(tabs, 0, 0); QDialogButtonBox *bb = new QDialogButtonBox(QDialogButtonBox::Close); maingrid->addWidget(bb, 1, 0); connect(bb, SIGNAL(rejected()), this, SLOT(close())); QFrame *frame = new QFrame; tabs->addTab(frame, tr("Pitch")); QGridLayout *grid = new QGridLayout; frame->setLayout(grid); m_freq = new QDoubleSpinBox; m_freq->setSuffix(QString(" Hz")); m_freq->setDecimals(6); m_freq->setMinimum(1e-3); m_freq->setMaximum(1e6); m_freq->setValue(440); connect(m_freq, SIGNAL(valueChanged(double)), this, SLOT(freqChanged())); // The min and max range values for all the remaining controls are // determined by the min and max Hz above m_midi = new QSpinBox; m_midi->setMinimum(-156); m_midi->setMaximum(203); connect(m_midi, SIGNAL(valueChanged(int)), this, SLOT(midiChanged())); m_note = new QComboBox; for (int i = 0; i < 12; ++i) { m_note->addItem(pianoNotes[i]); } connect(m_note, SIGNAL(currentIndexChanged(int)), this, SLOT(noteChanged())); m_octave = new QSpinBox; m_octave->setMinimum(-14); m_octave->setMaximum(15); connect(m_octave, SIGNAL(valueChanged(int)), this, SLOT(octaveChanged())); m_cents = new QDoubleSpinBox; m_cents->setSuffix(tr(" cents")); m_cents->setDecimals(4); m_cents->setMinimum(-50); m_cents->setMaximum(50); connect(m_cents, SIGNAL(valueChanged(double)), this, SLOT(centsChanged())); int row = 0; grid->addWidget(new QLabel(tr("In 12-tone Equal Temperament:")), row, 0, 1, 9); ++row; grid->setRowMinimumHeight(row, 8); ++row; grid->addWidget(m_freq, row, 0, 2, 1, Qt::AlignRight | Qt::AlignVCenter); grid->addWidget(new QLabel(tr("=")), row, 1, 2, 1, Qt::AlignHCenter | Qt::AlignVCenter); grid->addWidget(new QLabel(tr("+")), row, 7, 2, 1, Qt::AlignHCenter | Qt::AlignVCenter); grid->addWidget(m_cents, row, 8, 2, 1, Qt::AlignLeft | Qt::AlignVCenter); grid->addWidget(new QLabel(tr("Piano note")), row, 2, 1, 2); grid->addWidget(m_note, row, 4); grid->addWidget(new QLabel(tr("in octave")), row, 5); grid->addWidget(m_octave, row, 6); ++row; grid->addWidget(new QLabel(tr("MIDI pitch")), row, 2, 1, 2); grid->addWidget(m_midi, row, 4); ++row; grid->setRowStretch(row, 20); grid->setRowMinimumHeight(row, 8); ++row; m_pitchPrefsLabel = new QLabel; grid->addWidget(m_pitchPrefsLabel, row, 0, 1, 9); ++row; grid->addWidget (new QLabel(tr("Note that only pitches in the range 0 to 127 are valid " "in the MIDI protocol.")), row, 0, 1, 9); ++row; frame = new QFrame; tabs->addTab(frame, tr("Tempo")); grid = new QGridLayout; frame->setLayout(grid); m_samples = new QDoubleSpinBox; m_samples->setSuffix(QString(" samples")); m_samples->setDecimals(2); m_samples->setMinimum(1); m_samples->setMaximum(1e8); m_samples->setValue(22050); connect(m_samples, SIGNAL(valueChanged(double)), this, SLOT(samplesChanged())); m_period = new QDoubleSpinBox; m_period->setSuffix(QString(" ms")); m_period->setDecimals(4); m_period->setMinimum(1e-3); m_period->setMaximum(100000); m_period->setValue(500); connect(m_period, SIGNAL(valueChanged(double)), this, SLOT(periodChanged())); m_bpm = new QDoubleSpinBox; m_bpm->setSuffix(QString(" bpm")); m_bpm->setDecimals(4); m_bpm->setMinimum(0.1); m_bpm->setMaximum(1e6); m_bpm->setValue(120); connect(m_bpm, SIGNAL(valueChanged(double)), this, SLOT(bpmChanged())); m_tempofreq = new QDoubleSpinBox; m_tempofreq->setSuffix(QString(" beats/sec")); m_tempofreq->setDecimals(4); m_tempofreq->setMinimum(1e-3); m_tempofreq->setMaximum(1e5); m_tempofreq->setValue(0.5); connect(m_tempofreq, SIGNAL(valueChanged(double)), this, SLOT(tempofreqChanged())); m_samplerate = new QComboBox; QList<int> rates; rates << 8000; for (int i = 1; i <= 16; i *= 2) { rates << 11025 * i << 12000 * i; } foreach (int r, rates) { m_samplerate->addItem(QString("%1 Hz").arg(r)); } connect(m_samplerate, SIGNAL(currentIndexChanged(int)), this, SLOT(samplerateChanged())); m_samplerate->setCurrentText("44100 Hz"); connect(Preferences::getInstance(), SIGNAL(propertyChanged(PropertyContainer::PropertyName)), this, SLOT(preferenceChanged(PropertyContainer::PropertyName))); row = 0; grid->setRowStretch(row, 20); grid->setRowMinimumHeight(row, 8); ++row; grid->addWidget(new QLabel(tr("Beat period")), row, 0, 2, 1, Qt::AlignVCenter); grid->addWidget(m_period, row, 1); grid->addWidget(new QLabel(tr("=")), row, 2, 2, 1, Qt::AlignVCenter); grid->addWidget(m_tempofreq, row, 3); grid->addWidget(new QLabel(tr("at")), row, 4, 2, 1, Qt::AlignVCenter); grid->addWidget(m_samplerate, row, 5, 2, 1, Qt::AlignVCenter); ++row; grid->addWidget(m_samples, row, 1); grid->addWidget(m_bpm, row, 3); ++row; grid->setRowStretch(row, 20); grid->setRowMinimumHeight(row, 8); updatePitchesFromFreq(); updatePitchPrefsLabel(); updateTempiFromSamples(); } UnitConverter::~UnitConverter() { } void UnitConverter::setTo(QSpinBox *box, int value) { box->blockSignals(true); if (value < box->minimum() || value > box->maximum()) { QPalette p; p.setColor(QPalette::Text, Qt::red); box->setPalette(p); } else { box->setPalette(QPalette()); } box->setValue(value); box->blockSignals(false); } void UnitConverter::setTo(QDoubleSpinBox *box, double value) { box->blockSignals(true); if (value < box->minimum() || value > box->maximum()) { QPalette p; p.setColor(QPalette::Text, Qt::red); box->setPalette(p); } else { box->setPalette(QPalette()); } box->setValue(value); box->blockSignals(false); } void UnitConverter::preferenceChanged(PropertyContainer::PropertyName) { updatePitchesFromFreq(); updatePitchPrefsLabel(); } void UnitConverter::updatePitchPrefsLabel() { m_pitchPrefsLabel->setText (tr("With concert-A tuning frequency at %1 Hz, and " "middle C residing in octave %2.\n" "(These can be changed in the application preferences.)") .arg(Preferences::getInstance()->getTuningFrequency()) .arg(Preferences::getInstance()->getOctaveOfMiddleC())); } void UnitConverter::freqChanged() { updatePitchesFromFreq(); } void UnitConverter::midiChanged() { double freq = Pitch::getFrequencyForPitch(m_midi->value(), m_cents->value()); m_freq->setValue(freq); } void UnitConverter::noteChanged() { int pitch = Pitch::getPitchForNoteAndOctave(m_note->currentIndex(), m_octave->value()); double freq = Pitch::getFrequencyForPitch(pitch, m_cents->value()); m_freq->setValue(freq); } void UnitConverter::octaveChanged() { int pitch = Pitch::getPitchForNoteAndOctave(m_note->currentIndex(), m_octave->value()); double freq = Pitch::getFrequencyForPitch(pitch, m_cents->value()); m_freq->setValue(freq); } void UnitConverter::centsChanged() { double freq = Pitch::getFrequencyForPitch(m_midi->value(), m_cents->value()); m_freq->setValue(freq); } void UnitConverter::updatePitchesFromFreq() { double cents = 0; int pitch = Pitch::getPitchForFrequency(m_freq->value(), ¢s); int note, octave; Pitch::getNoteAndOctaveForPitch(pitch, note, octave); // cerr << "pitch " << pitch << " note " << note << " octave " << octave << " cents " << cents << endl; setTo(m_midi, pitch); setTo(m_cents, cents); setTo(m_octave, octave); m_note->blockSignals(true); m_note->setCurrentIndex(note); m_note->blockSignals(false); } void UnitConverter::samplesChanged() { updateTempiFromSamples(); } void UnitConverter::periodChanged() { double rate = getSampleRate(); double sec = m_period->value() / 1000.0; double samples = rate * sec; m_samples->setValue(samples); } void UnitConverter::bpmChanged() { double rate = getSampleRate(); double sec = 60.0 / m_bpm->value(); double samples = rate * sec; m_samples->setValue(samples); } void UnitConverter::tempofreqChanged() { double rate = getSampleRate(); double samples = rate / m_tempofreq->value(); m_samples->setValue(samples); } void UnitConverter::samplerateChanged() { // Preserve the beat period in seconds, here, not in samples periodChanged(); } double UnitConverter::getSampleRate() { return double(atoi(m_samplerate->currentText().toLocal8Bit().data())); } void UnitConverter::updateTempiFromSamples() { double samples = m_samples->value(); double rate = getSampleRate(); // cerr << samples << " samples at rate " << rate << endl; double sec = samples / rate; double hz = rate / samples; double bpm = 60.0 / sec; setTo(m_bpm, bpm); setTo(m_period, sec * 1000.0); setTo(m_tempofreq, hz); }