| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the examples of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:BSD$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** BSD License Usage |
| ** Alternatively, 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 The Qt Company Ltd 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" |
| |
| Radio::Radio() |
| { |
| radio = new QRadioTuner; |
| connect(radio, QOverload<QRadioTuner::Error>::of(&QRadioTuner::error), |
| this, QOverload<QRadioTuner::Error>::of(&Radio::error)); |
| |
| if (radio->isBandSupported(QRadioTuner::FM)) |
| radio->setBand(QRadioTuner::FM); |
| |
| QWidget *window = new QWidget; |
| QVBoxLayout *layout = new QVBoxLayout; |
| QHBoxLayout *buttonBar = new QHBoxLayout; |
| QHBoxLayout *topBar = new QHBoxLayout; |
| |
| layout->addLayout(topBar); |
| |
| freq = new QLabel; |
| freq->setText(QString("%1 kHz").arg(radio->frequency()/1000)); |
| topBar->addWidget(freq); |
| connect(radio, &QRadioTuner::frequencyChanged, |
| this, &Radio::freqChanged); |
| |
| signal = new QLabel; |
| if (radio->isAvailable()) |
| signal->setText(tr("No Signal")); |
| else |
| signal->setText(tr("No radio found")); |
| topBar->addWidget(signal); |
| connect(radio, &QRadioTuner::signalStrengthChanged, |
| this, &Radio::signalChanged); |
| |
| volumeSlider = new QSlider(Qt::Vertical,this); |
| volumeSlider->setRange(0, 100); |
| volumeSlider->setValue(50); |
| connect(volumeSlider, &QSlider::valueChanged, |
| this, &Radio::updateVolume); |
| topBar->addWidget(volumeSlider); |
| |
| layout->addLayout(buttonBar); |
| |
| searchLeft = new QPushButton; |
| searchLeft->setText(tr("scan Down")); |
| connect(searchLeft, &QPushButton::clicked, |
| this, &Radio::searchDown); |
| buttonBar->addWidget(searchLeft); |
| |
| left = new QPushButton; |
| left->setText(tr("Freq Down")); |
| connect(left, &QPushButton::clicked, |
| this, &Radio::freqDown); |
| buttonBar->addWidget(left); |
| |
| right = new QPushButton; |
| connect(right, &QPushButton::clicked, |
| this, &Radio::freqUp); |
| right->setText(tr("Freq Up")); |
| buttonBar->addWidget(right); |
| |
| searchRight = new QPushButton; |
| searchRight->setText(tr("scan Up")); |
| connect(searchRight, &QPushButton::clicked, |
| this, &Radio::searchUp); |
| buttonBar->addWidget(searchRight); |
| |
| window->setLayout(layout); |
| setCentralWidget(window); |
| window->show(); |
| |
| radio->start(); |
| } |
| |
| Radio::~Radio() |
| { |
| } |
| |
| void Radio::freqUp() |
| { |
| int f = radio->frequency(); |
| f += radio->frequencyStep(QRadioTuner::FM); |
| radio->setFrequency(f); |
| } |
| |
| void Radio::freqDown() |
| { |
| int f = radio->frequency(); |
| 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); |
| } |
| |