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Initial copy of QtMultimediaKit.

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Michael Goddard
2011-06-29 13:38:46 +10:00
commit 2a34e88c1e
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examples/radio/radio.cpp Normal file
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/****************************************************************************
**
** 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 Mobility Components.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 Nokia Corporation 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 "radio.h"
#include <QtGui>
Radio::Radio()
{
radio = new QRadioTuner;
connect(radio,SIGNAL(frequencyChanged(int)),this,SLOT(freqChanged(int)));
connect(radio,SIGNAL(signalStrengthChanged(int)),this,SLOT(signalChanged(int)));
connect(radio, SIGNAL(error(QRadioTuner::Error)), this, SLOT(error(QRadioTuner::Error)));
if(radio->isBandSupported(QRadioTuner::FM))
radio->setBand(QRadioTuner::FM);
QWidget *window = new QWidget;
QVBoxLayout* layout = new QVBoxLayout;
QHBoxLayout* buttonBar = new QHBoxLayout;
#if defined Q_OS_SYMBIAN // this is so that we can see all buttons also in 3.1 devices, where the screens are smaller..
QHBoxLayout* buttonBar2 = new QHBoxLayout;
#endif
QHBoxLayout* topBar = new QHBoxLayout;
layout->addLayout(topBar);
freq = new QLabel;
freq->setText(QString("%1 kHz").arg(radio->frequency()/1000));
topBar->addWidget(freq);
signal = new QLabel;
if (radio->isAvailable())
signal->setText(tr("No Signal"));
else
signal->setText(tr("No radio found"));
topBar->addWidget(signal);
#if defined Q_WS_MAEMO_5
QSpacerItem *spacer = new QSpacerItem(0, 0, QSizePolicy::Expanding, QSizePolicy::Minimum);
topBar->addItem(spacer);
volumeSlider = new QSlider(Qt::Horizontal,this);
#else
volumeSlider = new QSlider(Qt::Vertical,this);
#endif
volumeSlider->setRange(0,100);
volumeSlider->setValue(50);
connect(volumeSlider,SIGNAL(valueChanged(int)),this,SLOT(updateVolume(int)));
topBar->addWidget(volumeSlider);
layout->addLayout(buttonBar);
#if defined Q_OS_SYMBIAN
layout->addLayout(buttonBar2);
#endif
searchLeft = new QPushButton;
searchLeft->setText(tr("scan Down"));
connect(searchLeft,SIGNAL(clicked()),SLOT(searchDown()));
buttonBar->addWidget(searchLeft);
left = new QPushButton;
left->setText(tr("Freq Down"));
connect(left,SIGNAL(clicked()),SLOT(freqDown()));
#if defined Q_OS_SYMBIAN
buttonBar2->addWidget(left);
#else
buttonBar->addWidget(left);
#endif
right = new QPushButton;
connect(right,SIGNAL(clicked()),SLOT(freqUp()));
right->setText(tr("Freq Up"));
#if defined Q_OS_SYMBIAN
buttonBar2->addWidget(right);
#else
buttonBar->addWidget(right);
#endif
searchRight = new QPushButton;
searchRight->setText(tr("scan Up"));
connect(searchRight,SIGNAL(clicked()),SLOT(searchUp()));
buttonBar->addWidget(searchRight);
window->setLayout(layout);
setCentralWidget(window);
window->show();
radio->start();
}
Radio::~Radio()
{
}
void Radio::freqUp()
{
int f = radio->frequency();
f = f + radio->frequencyStep(QRadioTuner::FM);
radio->setFrequency(f);
}
void Radio::freqDown()
{
int f = radio->frequency();
f = f - radio->frequencyStep(QRadioTuner::FM);
radio->setFrequency(f);
}
void Radio::searchUp()
{
radio->searchForward();
}
void Radio::searchDown()
{
radio->searchBackward();
}
void Radio::freqChanged(int)
{
freq->setText(QString("%1 kHz").arg(radio->frequency()/1000));
}
void Radio::signalChanged(int)
{
if(radio->signalStrength() > 25)
signal->setText(tr("Got Signal"));
else
signal->setText(tr("No Signal"));
}
void Radio::updateVolume(int v)
{
radio->setVolume(v);
}
void Radio::error(QRadioTuner::Error error)
{
const QMetaObject* metaObj = radio->metaObject();
QMetaEnum errorEnum = metaObj->enumerator(metaObj->indexOfEnumerator("Error"));
qWarning().nospace() << "Warning: Example application received error QRadioTuner::" << errorEnum.valueToKey(error);
}