博客

import datetime
import time
import sys
import time
import random
from PyQt5.Qt import *
from PyQt5 import QtWidgets, QtCore
from PyQt5.QtChart import *


class View_event(QWidget):
    View_eventSignal = pyqtSignal()
    # view 总窗口
    def __init__(self):
        super(View_event, self).__init__()
        # self.setupUi(self)
        self.i=0
        # 执行折线视图函数
        self.create_chart()

        self.selfID = ""

        self.datalist = []
        self.datalist2 = []
        for i in range(0,20):
            self.datalist.append(0)
            self.datalist2.append(0)

        self.timer = QTimer(self) #更新时间戳，
        self.timer.start(1000) #每隔x毫秒刷新数据
        self.timer.timeout.connect(self.create_series)

    def create_chart(self):
        # 创建折线视图窗口
        self.chart = QChartView(self)
        self.chart.setRubberBand(QChartView.RectangleRubberBand)
        self.chart.setGeometry(QtCore.QRect(0, 0, 980, 480))

        self.chart.setRenderHint(QPainter.Antialiasing)  # 抗锯齿
        self.chart.raise_()
        self.chart._chart = QChart()  # 创建折线视图
        self.chart._chart.setBackgroundVisible(visible=False)      # 背景色透明
        self.chart._chart.setBackgroundBrush(QBrush(QColor("#000FFF")))     # 改变图背景色
        #  图形项默认无法接收悬停事件，可以使用QGraphicsItem的setAcceptHoverEvents()函数使图形项可以接收悬停事件。
        # self.chart._chart.setAcceptHoverEvents(True)
        # 4条折线的坐标值
        # 执行创建折线的函数
        self.series = QLineSeries(self)
        self.series.setName("进水")  # 1#折线命名

        self.chart._chart.addSeries(self.series)
        self.series2 = QLineSeries(self)
        self.series2.setName("出水")  # 2#折线命名
        self.chart._chart.addSeries(self.series2)
        # self.chart._chart.legend().setVisible(False) # 表头是否可见

        # 自定义x轴
        self.x_Aix1 = QDateTimeAxis()  # 定义x轴，QCategoryAxis(文字描述坐标轴)
        # self.x_Aix1.setFormat("yyyy-MM-dd HH:mm:ss") # 设定坐标格式
        self.x_Aix1.setFormat("HH:mm:ss") # 设定坐标格式
        self.x_Aix1.setLabelsAngle(60) # 倾斜角度
        # x_Aix1.setTickCount(11) # 字体大小
        curDateTIme = QDateTime.currentDateTime()
        self.x_Aix1.setRange(curDateTIme, curDateTIme.addSecs(10)) # 设置量程
        self.x_Aix1.setTickCount(10)  # 设置每个单元格有几个小的分级

        # 定义多个y轴
        self.y1_Aix = QValueAxis()  # 定义y1轴
        self.y1_Aix.setLabelFormat("%d")
        self.y1_Aix.setRange(0,200)
        self.y1_Aix.setLabelsColor(QColor("#DC143C"))
        self.y1_Aix.setLabelsEditable(True)
        self.y1_Aix .setTickCount(10)
        self.y1_Aix.setTitleText('出水压力(kpa)')

        self.y2_Aix = QValueAxis()  # 定义y2轴
        self.y2_Aix.setLabelFormat("%d")
        self.y2_Aix.setRange(0,200)
        self.y2_Aix.setLabelsColor(QColor("#0000FF"))
        self.y2_Aix.setLabelsEditable(True)
        self.y2_Aix .setTickCount(10)
        self.y2_Aix.setTitleText('出水压力(kpa)')

        self.chart._chart.addAxis(self.y1_Aix, Qt.AlignLeft)  # 添加到左侧
        self.chart._chart.addAxis(self.y2_Aix, Qt.AlignRight)  # 添加到右侧
        self.chart._chart.setAxisX(self.x_Aix1, self.series)

        self.chart.setChart(self.chart._chart)

        self.series.attachAxis(self.y1_Aix)
        self.series.attachAxis(self.x_Aix1)
        self.series2.attachAxis(self.y2_Aix)
        self.series2.attachAxis(self.x_Aix1)

    def create_series(self):
        dataTable = random.randint(90,100)
        dataTable2 = random.uniform(90,100)

        self.datalist.append(dataTable)
        self.datalist2.append(dataTable2)
        self.datalist.pop(0)
        self.datalist2.pop(0)

        curDateTIme = QDateTime.currentDateTime()

        for i in range(0,20):
            temp_AddTimePos = curDateTIme.addSecs(i)
            # self.series.append(temp_AddTimePos.toMSecsSinceEpoch(), qrand()%18+2)
            self.series.append(temp_AddTimePos.toMSecsSinceEpoch(), self.datalist[i])
            self.series2.append(temp_AddTimePos.toMSecsSinceEpoch(), self.datalist2[i])


        self.x_Aix1.setRange(curDateTIme, curDateTIme.addSecs(20)) # 横坐标轴实时更新


        if self.series.count() > 20: #删除多余的数据量
            self.series.removePoints(0, self.series.count() - 20)
        if self.series2.count() > 20:
            self.series2.removePoints(0, self.series2.count() - 20)


        print(self.datalist)
        print(self.series.count())

        # self.series2.append(temp_AddTimePos.toMSecsSinceEpoch(), qrand()%18);


        # for i in range(0,20):
        #     self.series.append(i, self.datalist[i])
        #     self.series2.append(i, self.datalist2[i])





if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    # 初始化所有视图
    login = View_event()
    login.show()
    sys.exit(app.exec_())