在 PyQt 中更改图表比例时添加滚动

尝试这个：

'''
from PySide6.QtWidgets import QWidget, QApplication, QHBoxLayout, QScrollArea, QVBoxLayout
from PySide6.QtCharts import QChart, QChartView, QLineSeries, QValueAxis
from PySide6.QtCore import QPointF
from PySide6.QtGui import QPainter, Qt
'''
import math
import sys
from PyQt5 import QtCore, QtGui, QtWidgets, QtChart
from PyQt5.QtChart import *
from PyQt5.Qt import *


x = 2500     
x_ = x - 1


class MainWindow(QMainWindow):  
    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        
        self.step = 1000
        self.scrollbar = QtWidgets.QScrollBar(
            QtCore.Qt.Horizontal,
            sliderMoved=self.onAxisSliderMoved,
            pageStep=self.step,
        )
        self.scrollbar.setRange(0, x_)       
       
        self.centralWidget = QtWidgets.QWidget()
        self.setCentralWidget(self.centralWidget)        
        
        self.splitter = QtWidgets.QSplitter(QtCore.Qt.Vertical)
        self.layout = QtWidgets.QVBoxLayout(self.centralWidget)
        self.layout.addWidget(self.splitter, stretch=1)
        self.layout.addWidget(self.scrollbar)
        
        self.zoomFactor = 1.1 
        self.zoom_value = 0   
        
        self.series1 = QLineSeries()
        for i in range(0, 2500, 1):
            self.series1.append([QPointF(i, math.sin(i * 0.01))])
        _pen = QPen(Qt.red)
        self.series1.setPen(_pen)
  
        y_axis = QValueAxis()
        y_axis.setRange(-100, 100)
        y_axis.setTickType(QValueAxis.TickType.TicksDynamic)
        y_axis.setTickInterval(20)
        
        x_axis = QValueAxis()
        x_axis.setRange(1, 2500)
        x_axis.setTickInterval(100)
        x_axis.setTickType(QValueAxis.TickType.TicksDynamic)
        
        self.chart1 = QChart()    
        self.chart1.addSeries(self.series1)
        self.chart1.addAxis(x_axis, Qt.AlignmentFlag.AlignBottom)
        self.chart1.addAxis(y_axis, Qt.AlignmentFlag.AlignLeft)
        self.chart1.legend().hide()
        
        self.chart1.createDefaultAxes()

        self.chartview1 = QChartView(self.chart1)
        self.chartview1.setRenderHint(QPainter.Antialiasing)
        
        self.splitter.addWidget(self.chartview1)
        self.onAxisSliderMoved(0)

    def keyPressEvent(self, keyEvent):
        key = keyEvent.key()
        if key == Qt.Key_W and self.zoom_value < 10:
            self.chartview1.chart().zoom(self.zoomFactor)
            self.zoom_value = self.zoom_value + 1
        elif key == Qt.Key_S and self.zoom_value > 0:
            self.chartview1.chart().zoom(1 / self.zoomFactor)
            self.zoom_value = self.zoom_value - 1

    def adjust_axes(self, value_min, value_max):
        for i in range(self.splitter.count()):
            chart_view = self.splitter.widget(i)
            if isinstance(chart_view, QtChart.QChartView):
                chart = chart_view.chart()
                chart = self.chart1
                for serie in chart.series():
                    chart.axisX(serie).setRange(value_min, value_max)
                    
    @QtCore.pyqtSlot(int)
    def onAxisSliderMoved(self, value):
        value2 = value + self.step
        value1 = value
        if value2 >= x_:
            value2 = x_
            value1 = value2 - self.step
        self.adjust_axes(math.floor(value1), math.ceil(value2))
        

if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = MainWindow()
    w.resize(500, 400)
    w.show()
    sys.exit(app.exec())