/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the examples of the Qt Toolkit.

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#include "tonegeneratordialog.h"

#include <QComboBox>

#include <QDialogButtonBox>

#include <QLabel>

#include <QPushButton>

#include <QVBoxLayout>

#include <QCheckBox>

#include <QSlider>

#include <QSpinBox>

const int ToneGeneratorFreqMin = 1;

const int ToneGeneratorFreqMax = 1000;

const int ToneGeneratorFreqDefault = 440;

const int ToneGeneratorAmplitudeDefault = 75;

ToneGeneratorDialog::ToneGeneratorDialog(QWidget *parent)

    :   QDialog(parent)

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

    ,   m_frequencySweepEnabled(true)

    ,   m_toneGeneratorControl(new QWidget(this))

    ,   m_toneGeneratorFrequencyControl(new QWidget(this))

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

    ,   m_frequencySpinBox(new QSpinBox(this))

    ,   m_frequency(ToneGeneratorFreqDefault)

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

{

    QVBoxLayout *dialogLayout = new QVBoxLayout(this);

    m_toneGeneratorSweepCheckBox->setChecked(true);

    // Configure tone generator controls

    m_frequencySlider->setRange(ToneGeneratorFreqMin, ToneGeneratorFreqMax);

    m_frequencySlider->setValue(ToneGeneratorFreqDefault);

    m_frequencySpinBox->setRange(ToneGeneratorFreqMin, ToneGeneratorFreqMax);

    m_frequencySpinBox->setValue(ToneGeneratorFreqDefault);

    m_amplitudeSlider->setRange(0, 100);

    m_amplitudeSlider->setValue(ToneGeneratorAmplitudeDefault);

    // Add widgets to layout

    QScopedPointer<QGridLayout> frequencyControlLayout(new QGridLayout);

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

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

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

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

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

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

    m_toneGeneratorFrequencyControl->setEnabled(false);

    QScopedPointer<QGridLayout> toneGeneratorLayout(new QGridLayout);

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

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

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

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

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

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

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

    dialogLayout->addWidget(m_toneGeneratorControl);

    toneGeneratorLayout.take(); // ownership transferred

    // Connect

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

                    this, SLOT(frequencySweepEnabled(bool)));

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

                    m_frequencySpinBox, SLOT(setValue(int)));

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

                    m_frequencySlider, SLOT(setValue(int)));

    // Add standard buttons to layout

    QDialogButtonBox *buttonBox = new QDialogButtonBox(this);

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

    dialogLayout->addWidget(buttonBox);

    // Connect standard buttons

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

                    this, SLOT(accept()));

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

                    this, SLOT(reject()));

    setLayout(dialogLayout);

}

ToneGeneratorDialog::~ToneGeneratorDialog()

{

}

bool ToneGeneratorDialog::isFrequencySweepEnabled() const

{

    return m_toneGeneratorSweepCheckBox->isChecked();

}

qreal ToneGeneratorDialog::frequency() const

{

    return qreal(m_frequencySlider->value());

}

qreal ToneGeneratorDialog::amplitude() const

{

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

}

void ToneGeneratorDialog::frequencySweepEnabled(bool enabled)

{

    m_frequencySweepEnabled = enabled;

    m_toneGeneratorFrequencyControl->setEnabled(!enabled);

}