0725更改

UI/TrendManage/ActualTrendWidget.py

@@ -6,6 +6,7 @@ from matplotlib.backends.qt_compat import QtCore, QtWidgets
 from matplotlib.backends.backend_qt5agg import (FigureCanvas, NavigationToolbar2QT as NavigationToolbar)
 
 from matplotlib.figure import Figure
+from PyQt5.QtCore import QThread
 
 import matplotlib.ticker as ticker
 import matplotlib.pyplot as plt
@@ -25,9 +26,9 @@ class ActualTrend(QtWidgets.QMainWindow):
 
         self.varName = varName
 
-        self._main = QtWidgets.QWidget()
-        self.setCentralWidget(self._main)
-        layout = QtWidgets.QVBoxLayout(self._main)
+        _main = QtWidgets.QWidget()
+        self.setCentralWidget(_main)
+        layout = QtWidgets.QVBoxLayout(_main)
 
 
         dynamic_canvas = FigureCanvas(Figure(figsize=(5, 3)))
@@ -45,26 +46,30 @@ class ActualTrend(QtWidgets.QMainWindow):
         self._timer = dynamic_canvas.new_timer(
           1000, [(self._update_canvas, (), {})])
         self._timer.start()
+
+
      
     def _update_canvas(self):
         # self.n += 1
         varName = self.varName
         varMM = ModbusVarManage.getByName(varName)
-        if varMM:
-            minY, maxY = ModbusVarManage.getByName(varName)[-2], ModbusVarManage.getByName(varName)[-1]
+        minY = -100
+        maxY = 100
 
-        if not minY or not maxY:
-            minY = -100
-            maxY = 100
-        else:
-            minY = float(minY)
-            maxY = float(maxY)
+
+        if varMM:
+            minY, maxY = varMM[-2], varMM[-1]
+        minY = float(minY)
+        maxY = float(maxY)
 
         self._dynamic_ax.clear()
         acttime = time.strftime('%H:%M:%S', time.localtime(time.time()))
         # print(acttime)
         if varName != '':
-            uid = MBTCPMApp.backend.get('ModBus').decode('utf-8')
+            if MBTCPMApp.backend.get('ModBus') is not None:
+                uid = MBTCPMApp.backend.get('ModBus').decode('utf-8')
+            else:
+                return
             # print(uid)
             res = AsyncResult(uid)  # 参数为task id
             if res.result:
@@ -85,8 +90,13 @@ class ActualTrend(QtWidgets.QMainWindow):
 
         self._dynamic_ax.plot(pos_list, value_list, 'bo-', linewidth=2)
         # self._dynamic_ax.set_xlim(0,10)
-        self._dynamic_ax.set_ylim(minY,maxY)
+        self._dynamic_ax.set_ylim(minY, maxY)
         self._dynamic_ax.figure.canvas.draw()
+
+    def closeEvent(self, event):
+        # 判断是否点击了窗口的关闭按钮
+        if event.type() == event.Close:
+            self._timer.stop()
         
 if __name__ == "__main__":
     qapp = QtWidgets.QApplication(sys.argv)

UI/VarManages/Thread.py

@@ -1,6 +1,7 @@
 import time
 from PyQt5.QtCore import  QThread, pyqtSignal
 
+from UI.TrendManage.ActualTrendWidget import ActualTrend
 from protocol.TCP.RTDTC import RTDTCClient
 from protocol.TCP.Analog import AnalogClient
 from protocol.FF.FFSimulate import FFSimulate
@@ -111,3 +112,6 @@ class HartSimulateThread(FFThread):
                     self.window.valueList = self.HartSimulate.readValue()
                 except Exception as e:
                     print(e)
+
+
+