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50
51 #include "radio.h"
52
Radio()53 Radio::Radio()
54 {
55 radio = new QRadioTuner;
56 connect(radio, QOverload<QRadioTuner::Error>::of(&QRadioTuner::error),
57 this, QOverload<QRadioTuner::Error>::of(&Radio::error));
58
59 if (radio->isBandSupported(QRadioTuner::FM))
60 radio->setBand(QRadioTuner::FM);
61
62 QWidget *window = new QWidget;
63 QVBoxLayout *layout = new QVBoxLayout;
64 QHBoxLayout *buttonBar = new QHBoxLayout;
65 QHBoxLayout *topBar = new QHBoxLayout;
66
67 layout->addLayout(topBar);
68
69 freq = new QLabel;
70 freq->setText(QString("%1 kHz").arg(radio->frequency()/1000));
71 topBar->addWidget(freq);
72 connect(radio, &QRadioTuner::frequencyChanged,
73 this, &Radio::freqChanged);
74
75 signal = new QLabel;
76 if (radio->isAvailable())
77 signal->setText(tr("No Signal"));
78 else
79 signal->setText(tr("No radio found"));
80 topBar->addWidget(signal);
81 connect(radio, &QRadioTuner::signalStrengthChanged,
82 this, &Radio::signalChanged);
83
84 volumeSlider = new QSlider(Qt::Vertical,this);
85 volumeSlider->setRange(0, 100);
86 volumeSlider->setValue(50);
87 connect(volumeSlider, &QSlider::valueChanged,
88 this, &Radio::updateVolume);
89 topBar->addWidget(volumeSlider);
90
91 layout->addLayout(buttonBar);
92
93 searchLeft = new QPushButton;
94 searchLeft->setText(tr("scan Down"));
95 connect(searchLeft, &QPushButton::clicked,
96 this, &Radio::searchDown);
97 buttonBar->addWidget(searchLeft);
98
99 left = new QPushButton;
100 left->setText(tr("Freq Down"));
101 connect(left, &QPushButton::clicked,
102 this, &Radio::freqDown);
103 buttonBar->addWidget(left);
104
105 right = new QPushButton;
106 connect(right, &QPushButton::clicked,
107 this, &Radio::freqUp);
108 right->setText(tr("Freq Up"));
109 buttonBar->addWidget(right);
110
111 searchRight = new QPushButton;
112 searchRight->setText(tr("scan Up"));
113 connect(searchRight, &QPushButton::clicked,
114 this, &Radio::searchUp);
115 buttonBar->addWidget(searchRight);
116
117 window->setLayout(layout);
118 setCentralWidget(window);
119 window->show();
120
121 radio->start();
122 }
123
~Radio()124 Radio::~Radio()
125 {
126 }
127
freqUp()128 void Radio::freqUp()
129 {
130 int f = radio->frequency();
131 f += radio->frequencyStep(QRadioTuner::FM);
132 radio->setFrequency(f);
133 }
134
freqDown()135 void Radio::freqDown()
136 {
137 int f = radio->frequency();
138 f -= radio->frequencyStep(QRadioTuner::FM);
139 radio->setFrequency(f);
140 }
141
searchUp()142 void Radio::searchUp()
143 {
144 radio->searchForward();
145 }
146
searchDown()147 void Radio::searchDown()
148 {
149 radio->searchBackward();
150 }
151
freqChanged(int)152 void Radio::freqChanged(int)
153 {
154 freq->setText(QString("%1 kHz").arg(radio->frequency()/1000));
155 }
156
signalChanged(int)157 void Radio::signalChanged(int)
158 {
159 if(radio->signalStrength() > 25)
160 signal->setText(tr("Got Signal"));
161 else
162 signal->setText(tr("No Signal"));
163 }
164
updateVolume(int v)165 void Radio::updateVolume(int v)
166 {
167 radio->setVolume(v);
168 }
169
error(QRadioTuner::Error error)170 void Radio::error(QRadioTuner::Error error)
171 {
172 const QMetaObject *metaObj = radio->metaObject();
173 QMetaEnum errorEnum = metaObj->enumerator(metaObj->indexOfEnumerator("Error"));
174 qWarning().nospace() << "Warning: Example application received error QRadioTuner::" << errorEnum.valueToKey(error);
175 }
176
177