1、显示逻辑
1.1MatplotlibWidget.py
import sys
import random
import matplotlib
matplotlib.use("Qt5Agg")
from PyQt5 import QtCore
from PyQt5.QtWidgets import QApplication, QMainWindow, QVBoxLayout, QSizePolicy, QWidget
from numpy import arange, sin, pi
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.backends.backend_qt5agg import NavigationToolbar2QT as NavigationToolbar
from matplotlib.figure import Figure
import matplotlib.pyplot as plt
class MyMplCanvas(FigureCanvas):
"""FigureCanvas的最终的父类其实是QWidget。"""
def __init__(self, parent=None, width=5, height=4, dpi=100):
# 配置中文显示
plt.rcParams['font.family'] = ['SimHei'] # 用来正常显示中文标签
plt.rcParams['axes.unicode_minus'] = False # 用来正常显示负号
self.fig = Figure(figsize=(width, height), dpi=dpi) # 新建一个figure
self.axes = self.fig.add_subplot(111) # 建立一个子图，如果要建立复合图，可以在这里修改
plt.clf() # 每次绘图的时候不保留上一次绘图的结果
FigureCanvas.__init__(self, self.fig)
self.setParent(parent)
'''定义FigureCanvas的尺寸策略，这部分的意思是设置FigureCanvas，使之尽可能的向外填充空间。'''
FigureCanvas.setSizePolicy(self,
QSizePolicy.Expanding,
QSizePolicy.Expanding)
FigureCanvas.updateGeometry(self)
'''绘制静态图，可以在这里定义自己的绘图逻辑'''
def start_static_plot(self):
self.fig.suptitle('测试静态图')
t = arange(0.0, 3.0, 0.01)
s = sin(2 * pi * t)
self.axes.plot(t, s)
self.axes.set_ylabel('静态图：Y轴')
self.axes.set_xlabel('静态图：X轴')
self.axes.grid(True)
'''启动绘制动态图'''
def start_dynamic_plot(self, *args, **kwargs):
timer = QtCore.QTimer(self)
timer.timeout.connect(self.update_figure) # 每隔一段时间就会触发一次update_figure函数。
timer.start(1000) # 触发的时间间隔为1秒。
'''动态图的绘图逻辑可以在这里修改'''
def update_figure(self):
self.fig.suptitle('测试动态图')
l = [random.randint(0, 10) for i in range(4)]
self.axes.plot([0, 1, 2, 3], l, 'r')
self.axes.set_ylabel('动态图：Y轴')
self.axes.set_xlabel('动态图：X轴')
self.axes.grid(True)
self.draw()
class MatplotlibWidget(QWidget):
def __init__(self, parent=None):
super(MatplotlibWidget, self).__init__(parent)
self.initUi()
def initUi(self):
self.layout = QVBoxLayout(self)
self.mpl = MyMplCanvas(self, width=5, height=4, dpi=100)
# self.mpl.start_static_plot() # 如果你想要初始化的时候就呈现静态图，请把这行注释去掉
#self.mpl.start_dynamic_plot() # 如果你想要初始化的时候就呈现动态图，请把这行注释去掉
self.mpl_ntb = NavigationToolbar(self.mpl, self) # 添加完整的 toolbar
self.layout.addWidget(self.mpl)
self.layout.addWidget(self.mpl_ntb)
1.2Ui_matplotlib_pyqt.py
from PyQt5 import QtCore, QtGui, QtWidgets
from MatplotlibWidget import MatplotlibWidget
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.matplotlibwidget_static = MatplotlibWidget(self.centralwidget)
self.matplotlibwidget_static.setGeometry(QtCore.QRect(10, 0, 611, 271))
self.matplotlibwidget_static.setObjectName("matplotlibwidget_static")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(670, 80, 75, 23))
self.pushButton.setObjectName("pushButton")
self.matplotlibwidget_dynamic = MatplotlibWidget(self.centralwidget)
self.matplotlibwidget_dynamic.setEnabled(True)
self.matplotlibwidget_dynamic.setGeometry(QtCore.QRect(10, 270, 611, 291))
self.matplotlibwidget_dynamic.setObjectName("matplotlibwidget_dynamic")
self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
self.pushButton_2.setGeometry(QtCore.QRect(670, 370, 75, 23))
self.pushButton_2.setObjectName("pushButton_2")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 23))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "显示静态图"))
self.pushButton_2.setText(_translate("MainWindow", "显示动态图"))
2、业务逻辑
import sys
from PyQt5.QtCore import pyqtSlot
from PyQt5.QtWidgets import QMainWindow, QApplication
from Ui_matplotlib_pyqt import Ui_MainWindow
class MainWindow(QMainWindow, Ui_MainWindow):
"""
Class documentation goes here.
"""
def __init__(self, parent=None):
"""
Constructor
@param parent reference to the parent widget
@type QWidget
"""
super(MainWindow, self).__init__(parent)
self.setupUi(self)
self.matplotlibwidget_dynamic.setVisible(False)
self.matplotlibwidget_static.setVisible(False)
@pyqtSlot()
def on_pushButton_clicked(self):
"""
Slot documentation goes here.
"""
self.matplotlibwidget_static.setVisible(True)
self.matplotlibwidget_static.mpl.start_static_plot()
@pyqtSlot()
def on_pushButton_2_clicked(self):
"""
Slot documentation goes here.
"""
self.matplotlibwidget_dynamic.setVisible(True)
self.matplotlibwidget_dynamic.mpl.start_dynamic_plot()
if __name__ == "__main__":
app = QApplication(sys.argv)
ui = MainWindow()
ui.show()
sys.exit(app.exec_())
