def __init__(self, parent=None):
super().__init__(parent)
scene = QGraphicsScene(self)
self.setScene(scene)
self.m_tooltip = None
self.m_callouts = []
self.setDragMode(QGraphicsView.NoDrag)
self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
# chart
self.m_chart = QChart()
self.m_chart.setMinimumSize(640, 480)
self.m_chart.setTitle(
"Hover the line to show callout. Click the line to make it stay"
)
self.m_chart.legend().hide()
series = QLineSeries()
series.append(1, 3)
series.append(4, 5)
series.append(5, 4.5)
series.append(7, 1)
series.append(11, 2)
self.m_chart.addSeries(series)
series2 = QSplineSeries()
series2.append(1.6, 1.4)
series2.append(2.4, 3.5)
series2.append(3.7, 2.5)
series2.append(7, 4)
series2.append(10, 2)
self.m_chart.addSeries(series2)
self.m_chart.createDefaultAxes()
self.m_chart.setAcceptHoverEvents(True)
self.setRenderHint(QPainter.Antialiasing)
self.scene().addItem(self.m_chart)
self.m_coordX = QGraphicsSimpleTextItem(self.m_chart)
self.m_coordX.setPos(
self.m_chart.size().width() / 2 - 50, self.m_chart.size().height()
)
self.m_coordX.setText("X: ")
self.m_coordY = QGraphicsSimpleTextItem(self.m_chart)
self.m_coordY.setPos(
self.m_chart.size().width() / 2 + 50, self.m_chart.size().height()
)
self.m_coordY.setText("Y: ")
series.clicked.connect(self.keepCallout)
series.hovered.connect(self.tooltip)
series2.clicked.connect(self.keepCallout)
series2.hovered.connect(self.tooltip)
self.setMouseTracking(True)
class Widget(QWidget):
def __init__(self,
device_info: QAudioDeviceInfo,
parent: QWidget = None) -> None:
super().__init__(parent)
self.m_chart = QChart()
self.m_series = QLineSeries()
chart_view = QChartView(self.m_chart)
chart_view.setMinimumSize(800, 600)
self.m_chart.addSeries(self.m_series)
axisX = QValueAxis()
axisX.setRange(0, XYSeriesIODevice.sampleCount)
axisX.setLabelFormat("%g")
axisX.setTitleText("Samples")
axisY = QValueAxis()
axisY.setRange(-1, 1)
axisY.setTitleText("Audio level")
self.m_chart.addAxis(axisX, Qt.AlignBottom)
self.m_series.attachAxis(axisX)
self.m_chart.addAxis(axisY, Qt.AlignLeft)
self.m_series.attachAxis(axisY)
self.m_chart.legend().hide()
self.m_chart.setTitle(
f"Data from the microphone ({device_info.deviceName()})")
mainLayout = QVBoxLayout(self)
mainLayout.addWidget(chart_view)
formatAudio = QAudioFormat()
formatAudio.setSampleRate(8000)
formatAudio.setChannelCount(1)
formatAudio.setSampleSize(8)
formatAudio.setCodec("audio/pcm")
formatAudio.setByteOrder(QAudioFormat.LittleEndian)
formatAudio.setSampleType(QAudioFormat.UnSignedInt)
self.m_audioInput = QAudioInput(device_info, formatAudio, self)
self.m_device = XYSeriesIODevice(self.m_series, self)
self.m_device.open(QIODevice.WriteOnly)
self.m_audioInput.start(self.m_device)
def main():
import sys
app = QApplication(sys.argv)
series0 = QLineSeries()
series1 = QLineSeries()
series0 << QPointF(1, 5) << QPointF(3, 7) << QPointF(7, 6) << QPointF(
9, 7) << QPointF(12, 6) << QPointF(16, 7) << QPointF(18, 5)
series1 << QPointF(1, 3) << QPointF(3, 4) << QPointF(7, 3) << QPointF(
8, 2) << QPointF(12, 3) << QPointF(16, 4) << QPointF(18, 3)
series = QAreaSeries(series0, series1)
series.setName("Batman")
pen = QPen(0x059605)
pen.setWidth(3)
series.setPen(pen)
gradient = QLinearGradient(QPointF(0, 0), QPointF(0, 1))
gradient.setColorAt(0.0, QColor(0x3CC63C))
gradient.setColorAt(1.0, QColor(0x26F626))
gradient.setCoordinateMode(QGradient.ObjectBoundingMode)
series.setBrush(gradient)
chart = QChart()
chart.addSeries(series)
chart.setTitle("Simple areachart example")
chart.createDefaultAxes()
chart.axes(Qt.Horizontal)[0].setRange(0, 20)
chart.axes(Qt.Vertical)[0].setRange(0, 10)
chartView = QChartView(chart)
chartView.setRenderHint(QPainter.Antialiasing)
window = QMainWindow()
window.setCentralWidget(chartView)
window.resize(400, 300)
window.show()
sys.exit(app.exec_())