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    41 

    42 #include "tonegeneratordialog.h"

    43 #include <QComboBox>

    44 #include <QDialogButtonBox>

    45 #include <QLabel>

    46 #include <QPushButton>

    47 #include <QVBoxLayout>

    48 #include <QCheckBox>

    49 #include <QSlider>

    50 #include <QSpinBox>

    51 

    52 const int ToneGeneratorFreqMin = 1;

    53 const int ToneGeneratorFreqMax = 1000;

    54 const int ToneGeneratorFreqDefault = 440;

    55 const int ToneGeneratorAmplitudeDefault = 75;

    56 

    57 ToneGeneratorDialog::ToneGeneratorDialog(QWidget *parent)

    58     :   QDialog(parent)

    59     ,   m_toneGeneratorSweepCheckBox(new QCheckBox(tr("Frequency sweep"), this))

    60     ,   m_frequencySweepEnabled(true)

    61     ,   m_toneGeneratorControl(new QWidget(this))

    62     ,   m_toneGeneratorFrequencyControl(new QWidget(this))

    63     ,   m_frequencySlider(new QSlider(Qt::Horizontal, this))

    64     ,   m_frequencySpinBox(new QSpinBox(this))

    65     ,   m_frequency(ToneGeneratorFreqDefault)

    66     ,   m_amplitudeSlider(new QSlider(Qt::Horizontal, this))

    67 {

    68     QVBoxLayout *dialogLayout = new QVBoxLayout(this);

    69 

    70     m_toneGeneratorSweepCheckBox->setChecked(true);

    71 

    72     // Configure tone generator controls

    73     m_frequencySlider->setRange(ToneGeneratorFreqMin, ToneGeneratorFreqMax);

    74     m_frequencySlider->setValue(ToneGeneratorFreqDefault);

    75     m_frequencySpinBox->setRange(ToneGeneratorFreqMin, ToneGeneratorFreqMax);

    76     m_frequencySpinBox->setValue(ToneGeneratorFreqDefault);

    77     m_amplitudeSlider->setRange(0, 100);

    78     m_amplitudeSlider->setValue(ToneGeneratorAmplitudeDefault);

    79 

    80     // Add widgets to layout

    81 

    82     QScopedPointer<QGridLayout> frequencyControlLayout(new QGridLayout);

    83     QLabel *frequencyLabel = new QLabel(tr("Frequency (Hz)"), this);

    84     frequencyControlLayout->addWidget(frequencyLabel, 0, 0, 2, 1);

    85     frequencyControlLayout->addWidget(m_frequencySlider, 0, 1);

    86     frequencyControlLayout->addWidget(m_frequencySpinBox, 1, 1);

    87     m_toneGeneratorFrequencyControl->setLayout(frequencyControlLayout.data());

    88     frequencyControlLayout.take(); // ownership transferred to m_toneGeneratorFrequencyControl

    89     m_toneGeneratorFrequencyControl->setEnabled(false);

    90 

    91     QScopedPointer<QGridLayout> toneGeneratorLayout(new QGridLayout);

    92     QLabel *amplitudeLabel = new QLabel(tr("Amplitude"), this);

    93     toneGeneratorLayout->addWidget(m_toneGeneratorSweepCheckBox, 0, 1);

    94     toneGeneratorLayout->addWidget(m_toneGeneratorFrequencyControl, 1, 0, 1, 2);

    95     toneGeneratorLayout->addWidget(amplitudeLabel, 2, 0);

    96     toneGeneratorLayout->addWidget(m_amplitudeSlider, 2, 1);

    97     m_toneGeneratorControl->setLayout(toneGeneratorLayout.data());

    98     m_toneGeneratorControl->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);

    99     dialogLayout->addWidget(m_toneGeneratorControl);

   100     toneGeneratorLayout.take(); // ownership transferred

   101 

   102     // Connect

   103     CHECKED_CONNECT(m_toneGeneratorSweepCheckBox, SIGNAL(toggled(bool)),

   104                     this, SLOT(frequencySweepEnabled(bool)));

   105     CHECKED_CONNECT(m_frequencySlider, SIGNAL(valueChanged(int)),

   106                     m_frequencySpinBox, SLOT(setValue(int)));

   107     CHECKED_CONNECT(m_frequencySpinBox, SIGNAL(valueChanged(int)),

   108                     m_frequencySlider, SLOT(setValue(int)));

   109 

   110     // Add standard buttons to layout

   111     QDialogButtonBox *buttonBox = new QDialogButtonBox(this);

   112     buttonBox->setStandardButtons(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);

   113     dialogLayout->addWidget(buttonBox);

   114 

   115     // Connect standard buttons

   116     CHECKED_CONNECT(buttonBox->button(QDialogButtonBox::Ok), SIGNAL(clicked()),

   117                     this, SLOT(accept()));

   118     CHECKED_CONNECT(buttonBox->button(QDialogButtonBox::Cancel), SIGNAL(clicked()),

   119                     this, SLOT(reject()));

   120 

   121     setLayout(dialogLayout);

   122 }

   123 

   124 ToneGeneratorDialog::~ToneGeneratorDialog()

   125 {

   126 

   127 }

   128 

   129 bool ToneGeneratorDialog::isFrequencySweepEnabled() const

   130 {

   131     return m_toneGeneratorSweepCheckBox->isChecked();

   132 }

   133 

   134 qreal ToneGeneratorDialog::frequency() const

   135 {

   136     return qreal(m_frequencySlider->value());

   137 }

   138 

   139 qreal ToneGeneratorDialog::amplitude() const

   140 {

   141     return qreal(m_amplitudeSlider->value()) / 100.0;

   142 }

   143 

   144 void ToneGeneratorDialog::frequencySweepEnabled(bool enabled)

   145 {

   146     m_frequencySweepEnabled = enabled;

   147     m_toneGeneratorFrequencyControl->setEnabled(!enabled);

   148 }