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Diffstat (limited to 'examples/charts/dynamicspline/chart.py')
-rw-r--r-- | examples/charts/dynamicspline/chart.py | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/examples/charts/dynamicspline/chart.py b/examples/charts/dynamicspline/chart.py new file mode 100644 index 000000000..59ddef13f --- /dev/null +++ b/examples/charts/dynamicspline/chart.py @@ -0,0 +1,52 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import random + +from PySide6.QtCharts import QChart, QSplineSeries, QValueAxis +from PySide6.QtCore import Qt, QTimer, Slot +from PySide6.QtGui import QPen + + +class Chart(QChart): + def __init__(self, parent=None): + super().__init__(QChart.ChartTypeCartesian, parent, Qt.WindowFlags()) + self._timer = QTimer() + self._series = QSplineSeries(self) + self._titles = [] + self._axisX = QValueAxis() + self._axisY = QValueAxis() + self._step = 0 + self._x = 5 + self._y = 1 + + self._timer.timeout.connect(self.handleTimeout) + self._timer.setInterval(1000) + + green = QPen(Qt.red) + green.setWidth(3) + self._series.setPen(green) + self._series.append(self._x, self._y) + + self.addSeries(self._series) + self.addAxis(self._axisX, Qt.AlignBottom) + self.addAxis(self._axisY, Qt.AlignLeft) + + self._series.attachAxis(self._axisX) + self._series.attachAxis(self._axisY) + self._axisX.setTickCount(5) + self._axisX.setRange(0, 10) + self._axisY.setRange(-5, 10) + + self._timer.start() + + @Slot() + def handleTimeout(self): + x = self.plotArea().width() / self._axisX.tickCount() + y = (self._axisX.max() - self._axisX.min()) / self._axisX.tickCount() + self._x += y + self._y = random.uniform(0, 5) - 2.5 + self._series.append(self._x, self._y) + self.scroll(x, 0) + if self._x == 100: + self._timer.stop() |