def __init__(self, parent = None):
super(View, self).__init__(parent)
self.setScene(QGraphicsScene(self))
self.setDragMode(QGraphicsView.NoDrag)
self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
# Chart
self._chart = QtCharts.QChart()
self._chart.setMinimumSize(640, 480)
self._chart.setTitle("Hover the line to show callout. Click the line "
"to make it stay")
self._chart.legend().hide()
self.series = QtCharts.QLineSeries()
self.series.append(1, 3)
self.series.append(4, 5)
self.series.append(5, 4.5)
self.series.append(7, 1)
self.series.append(11, 2)
self._chart.addSeries(self.series)
self.series2 = QtCharts.QSplineSeries()
self.series2.append(1.6, 1.4)
self.series2.append(2.4, 3.5)
self.series2.append(3.7, 2.5)
self.series2.append(7, 4)
self.series2.append(10, 2)
self._chart.addSeries(self.series2)
self._chart.createDefaultAxes()
self._chart.setAcceptHoverEvents(True)
self.setRenderHint(QPainter.Antialiasing)
self.scene().addItem(self._chart)
self._coordX = QGraphicsSimpleTextItem(self._chart)
self._coordX.setPos(
self._chart.size().width()/2 - 50, self._chart.size().height())
self._coordX.setText("X: ")
self._coordY = QGraphicsSimpleTextItem(self._chart)
self._coordY.setPos(
self._chart.size().width()/2 + 50, self._chart.size().height())
self._coordY.setText("Y: ")
self._callouts = []
self._tooltip = Callout(self._chart)
self.series.clicked.connect(self.keepCallout)
self.series.hovered.connect(self.tooltip)
self.series2.clicked.connect(self.keepCallout)
self.series2.hovered.connect(self.tooltip)
self.setMouseTracking(True)
def createSplineChart(self):
chart = QtCharts.QChart()
chart.setTitle("Spline chart")
name = "Series "
for i, lst in enumerate(self.data_table):
series = QtCharts.QSplineSeries(chart)
for data in lst:
series.append(data[0])
series.setName("{}{}".format(name, i))
chart.addSeries(series)
chart.createDefaultAxes()
chart.axisX().setRange(0, self.value_max)
chart.axisY().setRange(0, self.value_count)
# Add space to label to add space between labels and axis
chart.axisY().setLabelFormat("%.1f ")
return chart