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103 lines
3.2 KiB
Python
103 lines
3.2 KiB
Python
import sys
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import time
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import numpy as np
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from matplotlib.backends.qt_compat import QtCore, QtWidgets
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from matplotlib.backends.backend_qt5agg import (FigureCanvas, NavigationToolbar2QT as NavigationToolbar)
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from matplotlib.figure import Figure
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from protocol.Celery.MBTCPMaster import app as MBTCPMApp
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from celery.result import AsyncResult
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from utils.Queue import Queue
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from model.ProjectModel.VarManage import ModbusVarManage
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class ActualTrend(QtWidgets.QMainWindow):
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def __init__(self, parent=None, varName = None):
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super(ActualTrend, self).__init__(parent)
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self.varName = varName
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_main = QtWidgets.QWidget()
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self.setCentralWidget(_main)
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layout = QtWidgets.QVBoxLayout(_main)
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dynamic_canvas = FigureCanvas(Figure(figsize=(5, 3)))
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layout.addWidget(dynamic_canvas)
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self.addToolBar(QtCore.Qt.BottomToolBarArea,
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NavigationToolbar(dynamic_canvas, self))
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self.x = [] #建立空的x轴数组和y轴数组
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self.y = []
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self.xQueue = Queue(length = 20)
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self.yQueue = Queue(length = 20)
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# self.n = 0
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self._dynamic_ax = dynamic_canvas.figure.subplots()
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self._timer = dynamic_canvas.new_timer(
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1000, [(self._update_canvas, (), {})])
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self._timer.start()
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def _update_canvas(self):
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# self.n += 1
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varName = self.varName
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varMM = ModbusVarManage.getByName(varName)
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self._dynamic_ax.clear()
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acttime = time.strftime('%H:%M:%S', time.localtime(time.time()))
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# print(acttime)
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if varName != '':
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if MBTCPMApp.backend.get('ModBus') is not None:
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uid = MBTCPMApp.backend.get('ModBus').decode('utf-8')
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else:
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return
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# print(uid)
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res = AsyncResult(uid) # 参数为task id
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if res.result:
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# print(res.result, res.date_done)
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try:
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yValue = (res.result[varName])
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self.yQueue.enqueue(yValue)
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self.xQueue.enqueue(acttime)
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except Exception as e:
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print(e)
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if not varMM[-2] and not varMM[-1]:
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minY = min(self.yQueue.list) - 5
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maxY = max(self.yQueue.list) + 5
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else:
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minY = float(varMM[-2]) - float(5)
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maxY = float(varMM[-1]) + float(5)
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name_list = self.xQueue.list
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value_list = np.array(self.yQueue.list)
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pos_list = np.arange(len(name_list))
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self._dynamic_ax.set_xticks(pos_list)
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self._dynamic_ax.set_xticklabels(name_list)
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self._dynamic_ax.plot(pos_list, value_list, 'bo-', linewidth=2)
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# self._dynamic_ax.set_xlim(0,10)
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self._dynamic_ax.set_ylim(minY, maxY)
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# print(id(self._dynamic_ax))
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self._dynamic_ax.figure.canvas.draw()
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def closeEvent(self, event):
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# 判断是否点击了窗口的关闭按钮
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if event.type() == event.Close:
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self._timer.stop()
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self.hide()
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def showEvent(self, event):
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self._timer.start()
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if __name__ == "__main__":
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qapp = QtWidgets.QApplication(sys.argv)
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app = ActualTrend()
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app.show()
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qapp.exec_()
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