107 lines
3.3 KiB
Python
107 lines
3.3 KiB
Python
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import sys
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import pyqtgraph as pg
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from PyQt5.QtGui import *
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from PyQt5.QtWidgets import *
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from PyQt5.QtCore import QThread, pyqtSignal, QTimer
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import numpy as np
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class PlotSin(QThread):
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# 定义信号，self.y 是 numpy.array，所以信号数据类型为 object
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signal = pyqtSignal(object)
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def __init__(self, parent=None):
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super().__init__()
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self.y = None
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self.phase = 0
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def sin(self):
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self.x = np.arange(0, 3.0, 0.01)
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self.y = np.sin(2 * np.pi * self.x + self.phase)
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self.phase += 0.1
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QThread.msleep(200) # 等待200毫秒
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def run(self):
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for _ in range(300):
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self.sin()
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self.signal.emit(self.y) # 向连接槽发射信号 self.y
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class PlotSin_MainWindow(QDialog):
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def __init__(self):
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super().__init__()
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self.initUI()
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self.clock_time = 0
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self.timer = QTimer(self) # 生成定时器
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self.timer.timeout.connect(self.clock) # 绑定计时函数 self.clock
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def initUI(self):
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self.creatContorls("时间显示：")
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self.creatResult("函数绘制：")
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layout = QHBoxLayout()
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layout.addWidget(self.controlsGroup)
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layout.addWidget(self.resultGroup)
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self.setLayout(layout)
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self.beginButton.clicked.connect(self.clock_begin)
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self.setGeometry(300, 300, 600, 300)
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self.setWindowTitle('Plot Sine')
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self.show()
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def creatContorls(self,title):
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self.controlsGroup = QGroupBox(title)
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self.beginButton = QPushButton("开始")
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numberLabel = QLabel("运行时间：")
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self.clockLabel = QLabel("")
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controlsLayout = QGridLayout()
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controlsLayout.addWidget(numberLabel, 0, 0)
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controlsLayout.addWidget(self.clockLabel, 0, 1)
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controlsLayout.addWidget(self.beginButton, 3, 0)
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self.controlsGroup.setLayout(controlsLayout)
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def creatResult(self,title):
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self.resultGroup = QGroupBox(title)
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self.guiplot = pg.PlotWidget()
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gridLayout = QGridLayout()
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gridLayout.addWidget(self.guiplot,0,2,2,3)
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self.resultGroup.setLayout(gridLayout)
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def clock_begin(self):
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if not self.timer.isActive():
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self.recorder_thread = PlotSin()
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self.recorder_thread.signal.connect(self.displaySin) # 绑定信号槽函数
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self.recorder_thread.start() # 线程执行
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self.clock()
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self.timer.start(1000)
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else:
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self.beginButton.setText("开始")
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self.clockLabel.setText("")
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self.recorder_thread.terminate() # 终止线程
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self.timer.stop() # 终止定时器
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self.clock_time = 0
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text = str(self.clock_time) + "s"
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self.clockLabel.setText(text)
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def clock(self):
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text = str(self.clock_time) + "s"
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self.clockLabel.setText(text)
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if self.clock_time == 0:
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self.beginButton.setText("结束")
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self.clock_time += 1
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def plotSin(self, y):
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self.guiplot.clear()
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self.guiplot.plot(y)
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def displaySin(self, y):
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self.plotSin(y)
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if __name__ == '__main__':
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app = QApplication(sys.argv)
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window = PlotSin_MainWindow()
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window.show()
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sys.exit(app.exec_())
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