window.cpp Example File
phonon/capabilities/window.cpp
#include <QtGui>
#include "window.h"
Window::Window()
{
setupUi();
updateWidgets();
connect(notifier(), SIGNAL(capabilitiesChanged()), this, SLOT(updateWidgets()));
}
void Window::updateWidgets()
{
devicesListWidget->clear();
QList<AudioOutputDevice> devices = availableAudioOutputDevices();
foreach (AudioOutputDevice device, devices) {
QListWidgetItem *item = new QListWidgetItem(devicesListWidget);
QString description = device.name();
if (!device.description().isEmpty())
description += " (" + device.description() + ")";
item->setText(description);
}
mimeListWidget->clear();
QStringList mimeTypes = availableMimeTypes();
foreach (QString mimeType, mimeTypes) {
QListWidgetItem *item = new QListWidgetItem(mimeListWidget);
item->setText(mimeType);
}
effectsTreeWidget->clear();
QList<EffectDescription> effects = availableAudioEffects();
foreach (EffectDescription effect, effects) {
QTreeWidgetItem *item = new QTreeWidgetItem(effectsTreeWidget);
item->setText(0, tr("Effect"));
item->setText(1, effect.name());
item->setText(2, effect.description());
Effect *instance = new Effect(effect, this);
QList<EffectParameter> parameters = instance->parameters();
for (int i = 0; i < parameters.size(); ++i) {
EffectParameter parameter = parameters.at(i);
QVariant defaultValue = parameter.defaultValue();
QVariant minimumValue = parameter.minimumValue();
QVariant maximumValue = parameter.maximumValue();
QString valueString = QString("%1 / %2 / %3")
.arg(defaultValue.toString()).arg(minimumValue.toString())
.arg(maximumValue.toString());
QTreeWidgetItem *parameterItem = new QTreeWidgetItem(item);
parameterItem->setText(0, tr("Parameter"));
parameterItem->setText(1, parameter.name());
parameterItem->setText(2, parameter.description());
parameterItem->setText(3, QVariant::typeToName(parameter.type()));
parameterItem->setText(4, valueString);
}
}
for (int i = 0; i < effectsTreeWidget->columnCount(); ++i) {
if (i == 0)
effectsTreeWidget->setColumnWidth(0, 150);
else if (i == 2)
effectsTreeWidget->setColumnWidth(2, 350);
else
effectsTreeWidget->resizeColumnToContents(i);
}
}
void Window::setupUi()
{
setupBackendBox();
QLayout *layout = new QVBoxLayout;
layout->addWidget(backendBox);
setLayout(layout);
setWindowTitle(tr("Backend Capabilities Example"));
}
void Window::setupBackendBox()
{
backendBox = new QGroupBox(tr("Backend Capabilities"));
devicesLabel = new QLabel(tr("Available Audio Devices:"));
devicesListWidget = new QListWidget;
mimeTypesLabel = new QLabel(tr("Supported MIME Types:"));
mimeListWidget = new QListWidget;
effectsLabel = new QLabel(tr("Available Audio Effects:"));
QStringList headerLabels;
headerLabels << tr("Type") << tr("Name") << tr("Description") <<
tr("Value Type") << tr("Default/Min/Max Values");
effectsTreeWidget = new QTreeWidget;
effectsTreeWidget->setHeaderLabels(headerLabels);
effectsTreeWidget->setColumnCount(5);
QGridLayout *layout = new QGridLayout;
layout->addWidget(devicesLabel, 0, 0);
layout->addWidget(devicesListWidget, 1, 0);
layout->addWidget(mimeTypesLabel, 0, 1);
layout->addWidget(mimeListWidget, 1, 1);
layout->addWidget(effectsLabel, 2, 0);
layout->addWidget(effectsTreeWidget, 3, 0, 2, 2);
layout->setRowStretch(3, 100);
backendBox = new QGroupBox(tr("Backend Capabilities"));
backendBox->setLayout(layout);
}