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/****************************************************************************
**
** Copyright (C) 2009 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui>
#include "window.h"
//! [constructor]
Window::Window()
{
setupUi();
updateWidgets();
connect(Phonon::BackendCapabilities::notifier(),
SIGNAL(capabilitiesChanged()), this, SLOT(updateWidgets()));
connect(Phonon::BackendCapabilities::notifier(),
SIGNAL(availableAudioOutputDevicesChanged()), SLOT(updateWidgets()));
}
//! [constructor]
//! [outputDevices]
void Window::updateWidgets()
{
devicesListView->setModel(new QStandardItemModel());
Phonon::ObjectDescriptionModel<Phonon::AudioOutputDeviceType> *model =
new Phonon::ObjectDescriptionModel<Phonon::AudioOutputDeviceType>();
model->setModelData(Phonon::BackendCapabilities::availableAudioOutputDevices());
devicesListView->setModel(model);
//! [outputDevices]
//! [mimeTypes]
mimeListWidget->clear();
QStringList mimeTypes =
Phonon::BackendCapabilities::availableMimeTypes();
foreach (QString mimeType, mimeTypes) {
QListWidgetItem *item = new QListWidgetItem(mimeListWidget);
item->setText(mimeType);
}
//! [mimeTypes]
//! [effects]
effectsTreeWidget->clear();
QList<Phonon::EffectDescription> effects =
Phonon::BackendCapabilities::availableAudioEffects();
foreach (Phonon::EffectDescription effect, effects) {
QTreeWidgetItem *item = new QTreeWidgetItem(effectsTreeWidget);
item->setText(0, tr("Effect"));
item->setText(1, effect.name());
item->setText(2, effect.description());
//! [effects]
//! [effectsParameters]
Phonon::Effect *instance = new Phonon::Effect(effect, this);
QList<Phonon::EffectParameter> parameters = instance->parameters();
for (int i = 0; i < parameters.size(); ++i) {
Phonon::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);
}
}
//! [effectsParameters]
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:"));
devicesListView = new QListView;
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(devicesListView, 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);
}
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