def __init__(self, parent, quotes, trades, data_range, currency_name):
QWidget.__init__(self, parent)
self.setMinimumWidth(600)
self.setMinimumHeight(400)
self.quotes_series = QLineSeries()
for point in quotes: # Conversion to 'float' in order not to get 'int' overflow on some platforms
self.quotes_series.append(float(point['timestamp']),
point['quote'])
self.trade_series = QScatterSeries()
for point in trades: # Conversion to 'float' in order not to get 'int' overflow on some platforms
self.trade_series.append(float(point['timestamp']), point['price'])
self.trade_series.setMarkerSize(5)
self.trade_series.setBorderColor(CustomColor.LightRed)
self.trade_series.setBrush(CustomColor.DarkRed)
axisX = QDateTimeAxis()
axisX.setTickCount(11)
axisX.setRange(QDateTime().fromSecsSinceEpoch(data_range[0]),
QDateTime().fromSecsSinceEpoch(data_range[1]))
axisX.setFormat("yyyy/MM/dd")
axisX.setLabelsAngle(-90)
axisX.setTitleText("Date")
axisY = QValueAxis()
axisY.setTickCount(11)
axisY.setRange(data_range[2], data_range[3])
axisY.setTitleText("Price, " + currency_name)
self.chartView = QChartView()
self.chartView.chart().addSeries(self.quotes_series)
self.chartView.chart().addSeries(self.trade_series)
self.chartView.chart().addAxis(axisX, Qt.AlignBottom)
self.chartView.chart().setAxisX(axisX, self.quotes_series)
self.chartView.chart().setAxisX(axisX, self.trade_series)
self.chartView.chart().addAxis(axisY, Qt.AlignLeft)
self.chartView.chart().setAxisY(axisY, self.quotes_series)
self.chartView.chart().setAxisY(axisY, self.trade_series)
self.chartView.chart().legend().hide()
self.chartView.setViewportMargins(0, 0, 0, 0)
self.chartView.chart().layout().setContentsMargins(
0, 0, 0, 0) # To remove extra spacing around chart
self.chartView.chart().setBackgroundRoundness(
0) # To remove corner rounding
self.chartView.chart().setMargins(QMargins(
0, 0, 0, 0)) # Allow chart to fill all space
self.layout = QHBoxLayout(self)
self.layout.setContentsMargins(0, 0, 0,
0) # Remove extra space around layout
self.layout.addWidget(self.chartView)
self.setLayout(self.layout)
class TestChart(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.series = QLineSeries()
self.series.append([
QPointF(1.0, 1.0),
QPointF(2.0, 73.0),
QPointF(3.0, 268.0),
QPointF(4.0, 17.0),
QPointF(5.0, 4325.0),
QPointF(6.0, 723.0)
])
self.chart = QChart()
self.chart.addSeries(self.series)
self.chart.legend().hide()
self.chart.setTitle("Logarithmic axis example")
self.axisX = QValueAxis()
self.axisX.setTitleText("Data point")
self.axisX.setLabelFormat("%i")
self.axisX.setTickCount(self.series.count())
self.chart.addAxis(self.axisX, Qt.AlignBottom)
self.series.attachAxis(self.axisX)
self.axisY = QLogValueAxis()
self.axisY.setTitleText("Values")
self.axisY.setLabelFormat("%g")
self.axisY.setBase(8.0)
self.axisY.setMinorTickCount(-1)
self.chart.addAxis(self.axisY, Qt.AlignLeft)
self.series.attachAxis(self.axisY)
self.chartView = QChartView(self.chart)
self.chartView.setRenderHint(QPainter.Antialiasing)
self.setCentralWidget(self.chartView)