settingsdialog.cpp Example File

multimedia/spectrum/app/settingsdialog.cpp
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#include "settingsdialog.h" #include <QCheckBox> #include <QComboBox> #include <QDialogButtonBox> #include <QLabel> #include <QPushButton> #include <QSlider> #include <QSpinBox> #include <QVBoxLayout> SettingsDialog::SettingsDialog( const QList<QAudioDeviceInfo> &availableInputDevices, const QList<QAudioDeviceInfo> &availableOutputDevices, QWidget *parent) : QDialog(parent) , m_windowFunction(DefaultWindowFunction) , m_inputDeviceComboBox(new QComboBox(this)) , m_outputDeviceComboBox(new QComboBox(this)) , m_windowFunctionComboBox(new QComboBox(this)) { QVBoxLayout *dialogLayout = new QVBoxLayout(this); // Populate combo boxes QAudioDeviceInfo device; foreach (device, availableInputDevices) m_inputDeviceComboBox->addItem(device.deviceName(), QVariant::fromValue(device)); foreach (device, availableOutputDevices) m_outputDeviceComboBox->addItem(device.deviceName(), QVariant::fromValue(device)); m_windowFunctionComboBox->addItem(tr("None"), QVariant::fromValue(int(NoWindow))); m_windowFunctionComboBox->addItem("Hann", QVariant::fromValue(int(HannWindow))); m_windowFunctionComboBox->setCurrentIndex(m_windowFunction); // Initialize default devices if (!availableInputDevices.empty()) m_inputDevice = availableInputDevices.front(); if (!availableOutputDevices.empty()) m_outputDevice = availableOutputDevices.front(); // Add widgets to layout QScopedPointer<QHBoxLayout> inputDeviceLayout(new QHBoxLayout); QLabel *inputDeviceLabel = new QLabel(tr("Input device"), this); inputDeviceLayout->addWidget(inputDeviceLabel); inputDeviceLayout->addWidget(m_inputDeviceComboBox); dialogLayout->addLayout(inputDeviceLayout.data()); inputDeviceLayout.take(); // ownership transferred to dialogLayout QScopedPointer<QHBoxLayout> outputDeviceLayout(new QHBoxLayout); QLabel *outputDeviceLabel = new QLabel(tr("Output device"), this); outputDeviceLayout->addWidget(outputDeviceLabel); outputDeviceLayout->addWidget(m_outputDeviceComboBox); dialogLayout->addLayout(outputDeviceLayout.data()); outputDeviceLayout.take(); // ownership transferred to dialogLayout QScopedPointer<QHBoxLayout> windowFunctionLayout(new QHBoxLayout); QLabel *windowFunctionLabel = new QLabel(tr("Window function"), this); windowFunctionLayout->addWidget(windowFunctionLabel); windowFunctionLayout->addWidget(m_windowFunctionComboBox); dialogLayout->addLayout(windowFunctionLayout.data()); windowFunctionLayout.take(); // ownership transferred to dialogLayout // Connect CHECKED_CONNECT(m_inputDeviceComboBox, SIGNAL(activated(int)), this, SLOT(inputDeviceChanged(int))); CHECKED_CONNECT(m_outputDeviceComboBox, SIGNAL(activated(int)), this, SLOT(outputDeviceChanged(int))); CHECKED_CONNECT(m_windowFunctionComboBox, SIGNAL(activated(int)), this, SLOT(windowFunctionChanged(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); } SettingsDialog::~SettingsDialog() { } void SettingsDialog::windowFunctionChanged(int index) { m_windowFunction = static_cast<WindowFunction>( m_windowFunctionComboBox->itemData(index).value<int>()); } void SettingsDialog::inputDeviceChanged(int index) { m_inputDevice = m_inputDeviceComboBox->itemData(index).value<QAudioDeviceInfo>(); } void SettingsDialog::outputDeviceChanged(int index) { m_outputDevice = m_outputDeviceComboBox->itemData(index).value<QAudioDeviceInfo>(); }