Файл примера window.cppphonon/capabilities/window.cpp/**************************************************************************** ** ** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** You may use this file under the terms of the BSD license as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names ** of its contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include <QtGui> #include "window.h" Window::Window() { setupUi(); updateWidgets(); connect(Phonon::BackendCapabilities::notifier(), SIGNAL(capabilitiesChanged()), this, SLOT(updateWidgets())); connect(Phonon::BackendCapabilities::notifier(), SIGNAL(availableAudioOutputDevicesChanged()), SLOT(updateWidgets())); } 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); mimeListWidget->clear(); QStringList mimeTypes = Phonon::BackendCapabilities::availableMimeTypes(); foreach (QString mimeType, mimeTypes) { QListWidgetItem *item = new QListWidgetItem(mimeListWidget); item->setText(mimeType); } 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()); 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); } } 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() { #if defined(Q_OS_SYMBIAN) || defined(Q_WS_MAEMO_5) || defined(Q_WS_SIMULATOR) devicesListView = new QListView; mimeListWidget = new QListWidget; 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); QTabWidget *tabWidget = new QTabWidget; QWidget *widgetDevices = new QWidget; QVBoxLayout *devicesLayout = new QVBoxLayout; devicesLayout->addWidget(devicesListView); widgetDevices->setLayout(devicesLayout); QWidget *widgetMimes = new QWidget; QVBoxLayout *mimesLayout = new QVBoxLayout; mimesLayout->addWidget(mimeListWidget); widgetMimes->setLayout(mimesLayout); QWidget *widgetEffects = new QWidget; QVBoxLayout *effectsLayout = new QVBoxLayout; effectsLayout->addWidget(effectsTreeWidget); widgetEffects->setLayout(effectsLayout); tabWidget->addTab(widgetDevices, tr("Audio Devices")); tabWidget->addTab(widgetMimes, tr("MIME Types")); tabWidget->addTab(widgetEffects, tr("Audio Effects")); QLayout *mainLayout = new QVBoxLayout; mainLayout->addWidget(tabWidget); #else 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); QLayout *mainLayout = new QVBoxLayout; mainLayout->addWidget(backendBox); #endif setLayout(mainLayout); setWindowTitle(tr("Backend Capabilities Example")); } |
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