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mainwindow.py
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import sys
import serial
import serial.tools.list_ports
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from drawwindow import DrawWindow
from aboutwindow import AboutWindow
from serialhandler import SerialHandler
class MainWindow(QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setWindowTitle('NoidHost')
self.setWindowIcon(QIcon('gml.png'))
self.statusbar = self.statusBar()
self.statusbar.showMessage('等待连接')
menubar = self.menuBar()
# 菜单栏-文件
exit_action = QAction('&退出', self)
exit_action.setShortcut('Ctrl+Q')
exit_action.setStatusTip('退出应用')
exit_action.triggered.connect(lambda: sys.exit())
menubar_file = menubar.addMenu('文件')
menubar_file.addAction(exit_action)
# 菜单栏-曲线
draw_node2_action = QAction('&节点2', self)
draw_node3_action = QAction('&节点3', self)
draw_node4_action = QAction('&节点4', self)
draw_node5_action = QAction('&节点5', self)
self.node2_drawwindow = DrawWindow()
self.node3_drawwindow = DrawWindow()
self.node4_drawwindow = DrawWindow()
self.node5_drawwindow = DrawWindow()
menubar_draw = menubar.addMenu('曲线')
menubar_draw.addAction(draw_node2_action)
menubar_draw.addAction(draw_node3_action)
menubar_draw.addAction(draw_node4_action)
menubar_draw.addAction(draw_node5_action)
draw_node2_action.triggered.connect(
lambda: self.drawStart(2))
draw_node3_action.triggered.connect(
lambda: self.drawStart(3))
draw_node4_action.triggered.connect(
lambda: self.drawStart(4))
draw_node5_action.triggered.connect(
lambda: self.drawStart(5))
# 菜单栏-关于
self.aboutwindow = AboutWindow()
about_action = QAction('&关于', self)
about_action.setShortcut('Ctrl+A')
about_action.setStatusTip('关于')
about_action.triggered.connect(lambda: self.aboutwindow.show())
menubar_about = menubar.addMenu('关于')
menubar_about.addAction(about_action)
self.label_node2 = QLabel(
'节点：2 湿度： % 温度： °C 光照度： lx ')
self.label_node3 = QLabel(
'节点：3 湿度： % 温度： °C 光照度： lx ', self)
self.label_node4 = QLabel(
'节点：4 湿度： % 温度： °C 光照度： lx ', self)
self.label_node5 = QLabel(
'节点：5 湿度： % 温度： °C 光照度： lx ', self)
self.combobox = QComboBox()
self.port_list = serial.tools.list_ports.comports()
for port in self.port_list:
self.combobox.addItem(port.description)
self.btnStart = QPushButton('开始')
self.btnExit = QPushButton('退出')
self.btnScanPort = QPushButton('刷新串口')
# 实例化多线程对象
self.handler = SerialHandler(self.port_list[0].name)
# 把控件放置在栅格布局中
layout = QGridLayout()
layout.addWidget(self.label_node2, 1, 1, 1, 4)
layout.addWidget(self.label_node3, 2, 1, 1, 4)
layout.addWidget(self.label_node4, 3, 1, 1, 4)
layout.addWidget(self.label_node5, 4, 1, 1, 4)
layout.addWidget(self.btnScanPort, 5, 1, 1, 1)
layout.addWidget(self.combobox, 5, 2, 1, 1)
layout.addWidget(self.btnStart, 5, 3, 1, 1)
layout.addWidget(self.btnExit, 5, 4, 1, 1)
self.widget = QWidget()
self.widget.setLayout(layout)
self.widget.setStyleSheet("QLabel{font-size: 18pt;}")
self.setCentralWidget(self.widget)
# 信号与槽函数的连接
self.handler.sign_node.connect(self.slotUpdateNode)
self.combobox.currentIndexChanged.connect(self.slotSelectPort)
self.btnScanPort.clicked.connect(self.slotScanPort)
self.btnStart.clicked.connect(self.slotStart)
self.btnExit.clicked.connect(lambda: sys.exit())
def slotScanPort(self):
self.port_list = serial.tools.list_ports.comports()
self.combobox.clear()
for port in self.port_list:
self.combobox.addItem(port.description)
self.handler.port_name = self.port_list[0].name
def slotSelectPort(self, index):
self.handler.port_name = self.port_list[index].name
def slotUpdateNode(self, node_seq: int, node_data: dict):
# 更新
if (node_seq == 2):
self.label_node2.setText(
f"节点：2 湿度：{node_data['humi']}% 温度：{node_data['temp']}°C 光照度：{node_data['light']}lx")
if (node_seq == 3):
self.label_node3.setText(
f"节点：3 湿度：{node_data['humi']}% 温度：{node_data['temp']}°C 光照度：{node_data['light']}lx")
if (node_seq == 4):
self.label_node4.setText(
f"节点：4 湿度：{node_data['humi']}% 温度：{node_data['temp']}°C 光照度：{node_data['light']}lx")
if (node_seq == 5):
self.label_node5.setText(
f"节点：5 湿度：{node_data['humi']}% 温度：{node_data['temp']}°C 光照度：{node_data['light']}lx")
def slotStart(self):
self.combobox.setEnabled(False)
self.btnScanPort.setEnabled(False)
self.btnStart.setEnabled(False)
self.btnExit.setEnabled(True)
self.statusbar.showMessage('已连接')
self.handler.start()
def drawStart(self, node_seq: int):
if node_seq == 2:
self.handler.sign_node.connect(self.node2_drawwindow.addPoint)
self.node2_drawwindow.start(node_seq)
elif node_seq == 3:
self.handler.sign_node.connect(self.node3_drawwindow.addPoint)
self.node3_drawwindow.start(node_seq)
elif node_seq == 4:
self.handler.sign_node.connect(self.node4_drawwindow.addPoint)
self.node4_drawwindow.start(node_seq)
elif node_seq == 5:
self.handler.sign_node.connect(self.node5_drawwindow.addPoint)
self.node5_drawwindow.start(node_seq)