柱状图示例¶

# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
from __future__ import annotations

"""PySide6 port of the linechart example from Qt v6.x"""

import sys

from PySide6.QtCharts import (QBarCategoryAxis, QBarSeries, QBarSet, QChart,
                              QChartView, QValueAxis)
from PySide6.QtCore import Qt
from PySide6.QtGui import QPainter
from PySide6.QtWidgets import QApplication, QMainWindow


class TestChart(QMainWindow):
    def __init__(self):
        super().__init__()

        self.set_0 = QBarSet("Jane")
        self.set_1 = QBarSet("John")
        self.set_2 = QBarSet("Axel")
        self.set_3 = QBarSet("Mary")
        self.set_4 = QBarSet("Samantha")

        self.set_0.append([1, 2, 3, 4, 5, 6])
        self.set_1.append([5, 0, 0, 4, 0, 7])
        self.set_2.append([3, 5, 8, 13, 8, 5])
        self.set_3.append([5, 6, 7, 3, 4, 5])
        self.set_4.append([9, 7, 5, 3, 1, 2])

        self.series = QBarSeries()
        self.series.append(self.set_0)
        self.series.append(self.set_1)
        self.series.append(self.set_2)
        self.series.append(self.set_3)
        self.series.append(self.set_4)

        self.chart = QChart()
        self.chart.addSeries(self.series)
        self.chart.setTitle("Simple barchart example")
        self.chart.setAnimationOptions(QChart.SeriesAnimations)

        self.categories = ["Jan", "Feb", "Mar", "Apr", "May", "Jun"]
        self.axis_x = QBarCategoryAxis()
        self.axis_x.append(self.categories)
        self.chart.addAxis(self.axis_x, Qt.AlignBottom)
        self.series.attachAxis(self.axis_x)

        self.axis_y = QValueAxis()
        self.axis_y.setRange(0, 15)
        self.chart.addAxis(self.axis_y, Qt.AlignLeft)
        self.series.attachAxis(self.axis_y)

        self.chart.legend().setVisible(True)
        self.chart.legend().setAlignment(Qt.AlignBottom)

        self._chart_view = QChartView(self.chart)
        self._chart_view.setRenderHint(QPainter.RenderHint.Antialiasing)

        self.setCentralWidget(self._chart_view)


if __name__ == "__main__":
    app = QApplication(sys.argv)

    window = TestChart()
    window.show()
    window.resize(420, 300)
    sys.exit(app.exec())