Python PyQt5實戰(zhàn)項目之網(wǎng)速監(jiān)控器的實現(xiàn)

更新時間：2021年11月09日 10:06:59 作者：不俠居

PyQt5以一套Python模塊的形式來實現(xiàn)功能。它包含了超過620個類，600個方法和函數(shù)。它是一個多平臺的工具套件，它可以運行在所有的主流操作系統(tǒng)中，包含Unix，Windows和Mac OS。PyQt5采用雙重許可模式。開發(fā)者可以在GPL和社區(qū)授權(quán)之間選擇

簡介

看到了一個能夠輕松實現(xiàn)獲取系統(tǒng)運行的進(jìn)程和系統(tǒng)利用率（包括CPU、內(nèi)存、磁盤、網(wǎng)絡(luò)等）信息的模塊–psutil模塊。這次利用psutil.net_io_counters()這個方法。

psutil模塊使用

>>> psutil.net_io_counters() # 獲取網(wǎng)絡(luò)讀寫字節(jié)／包的個數(shù)

snetio(bytes_sent=16775953, bytes_recv=712657945, packets_sent=216741, packets_recv=485775, errin=0, errout=0, dropin=0, dropout=0)

bytes_sent:上傳數(shù)據(jù)
bytes_recv: 接收數(shù)據(jù)

主界面

class NetWindows(QMainWindow):
    net_signal = pyqtSignal(str,str)
    def __init__(self):
        super(NetWindows,self).__init__()
        self.ui_init()  
        self.thread_init()


    def ui_init(self):
        self.setWindowTitle('網(wǎng)速')
        self.resize(200,80)
        self.setWindowOpacity(0.9) # 設(shè)置窗口透明度
        self.setWindowFlag(Qt.FramelessWindowHint) # 隱藏邊框
        self.setWindowFlag(Qt.WindowStaysOnTopHint) # 窗口始終顯示在最前面
        self.upload_icon = QLabel()
        self.upload_icon.setPixmap(QPixmap(':res/upload.png'))
        self.upload_icon.setScaledContents(True)
        self.download_icon = QLabel()
        self.download_icon.setPixmap(QPixmap(':res/download.png'))
        self.download_icon.setScaledContents(True)
        self.upload_text = QLabel()
        self.upload_text.setText('upload: ')
        self.download_text = QLabel()
        self.download_text.setText('download: ')

        self.upload_lab = QLabel()
        self.download_lab = QLabel()

        self.g_layout = QGridLayout()
        self.g_layout.addWidget(self.upload_icon,0,0,1,1)
        self.g_layout.addWidget(self.download_icon,1,0,1,1)
        self.g_layout.addWidget(self.upload_text,0,1,1,1)
        self.g_layout.addWidget(self.download_text,1,1,1,1)
        self.g_layout.addWidget(self.upload_lab,0,2,1,4)
        self.g_layout.addWidget(self.download_lab,1,2,1,4)
        self.widget = QWidget()
        self.widget.setLayout(self.g_layout)
        self.setCentralWidget(self.widget)

    def thread_init(self):
        self.net_thread = NetThread()
        self.net_thread.net_signal.connect(self.net_slot)
        self.net_thread.start(1000)

    def variate_init(self):
        self.upload_content = ''
        self.download_content = ''

    def net_slot(self,upload_content,download_content):
        self.upload_lab.setText(upload_content)
        self.download_lab.setText(download_content)

    
    def mousePressEvent(self, event):
        '''
        重寫按下事件
        '''                             
        self.start_x = event.x()                        
        self.start_y = event.y()

    def mouseMoveEvent(self, event):
        '''
        重寫移動事件
        '''                              
        dis_x = event.x() - self.start_x
        dis_y = event.y() - self.start_y
        self.move(self.x()+dis_x, self.y()+dis_y)

mousePressEvent()

獲取鼠標(biāo)按下時的坐標(biāo)位置(相對于窗口左上角)

mouseMoveEvent()

當(dāng)鼠標(biāo)處于按下狀態(tài)并開始移動時，鼠標(biāo)離窗口左上角的位置會不斷更新并保存在event.x()和event.y()中。
我們將更新后的x和y值不斷減去鼠標(biāo)按下時的坐標(biāo)位置，就可以知道鼠標(biāo)移動的距離。最后再調(diào)用move方法將窗口當(dāng)前坐標(biāo)加上移動距離即可

網(wǎng)速線程

class NetThread(QThread):
    net_signal = pyqtSignal(str,str)
    def __init__(self):
        super(NetThread,self).__init__()

    def net_func(self):
        parameter = psutil.net_io_counters()
        recv1 = parameter[1] #接收數(shù)據(jù)
        send1 = parameter[0] #上傳數(shù)據(jù)
        time.sleep(1)  # 每隔1s監(jiān)聽端口接收數(shù)據(jù)
        parameter = psutil.net_io_counters()
        recv2 = parameter[1]
        send2 = parameter[0]
        self.upload_content = '{:.1f} kb/s.'.format((send2 - send1) / 1024.0)
        self.download_content = '{:.1f} kb/s.'.format((recv2 - recv1) / 1024.0)

    def run(self):
        while(1):
            self.net_func()
            self.net_signal.emit(self.upload_content,self.download_content)
            time.sleep(1)

全部代碼

import sys
import time
import psutil

from PyQt5.QtWidgets import QApplication, QHBoxLayout, QMainWindow, QWidget, QFrame, QLabel, QVBoxLayout, QGridLayout
from PyQt5.QtCore import Qt, pyqtSignal, QThread
from PyQt5.QtGui import QPixmap
import res

class NetWindows(QMainWindow):
    net_signal = pyqtSignal(str,str)
    def __init__(self):
        super(NetWindows,self).__init__()
        self.ui_init()  
        self.thread_init()


    def ui_init(self):
        self.setWindowTitle('網(wǎng)速')
        self.resize(200,80)
        self.setWindowOpacity(0.9) # 設(shè)置窗口透明度
        self.setWindowFlag(Qt.FramelessWindowHint) # 隱藏邊框
        self.setWindowFlag(Qt.WindowStaysOnTopHint) # 窗口始終顯示在最前面
        self.upload_icon = QLabel()
        self.upload_icon.setPixmap(QPixmap(':res/upload.png'))
        self.upload_icon.setScaledContents(True)
        self.download_icon = QLabel()
        self.download_icon.setPixmap(QPixmap(':res/download.png'))
        self.download_icon.setScaledContents(True)
        self.upload_text = QLabel()
        self.upload_text.setText('upload: ')
        self.download_text = QLabel()
        self.download_text.setText('download: ')

        self.upload_lab = QLabel()
        self.download_lab = QLabel()

        self.g_layout = QGridLayout()
        self.g_layout.addWidget(self.upload_icon,0,0,1,1)
        self.g_layout.addWidget(self.download_icon,1,0,1,1)
        self.g_layout.addWidget(self.upload_text,0,1,1,1)
        self.g_layout.addWidget(self.download_text,1,1,1,1)
        self.g_layout.addWidget(self.upload_lab,0,2,1,4)
        self.g_layout.addWidget(self.download_lab,1,2,1,4)
        self.widget = QWidget()
        self.widget.setLayout(self.g_layout)
        self.setCentralWidget(self.widget)

    def thread_init(self):
        self.net_thread = NetThread()
        self.net_thread.net_signal.connect(self.net_slot)
        self.net_thread.start(1000)

    def variate_init(self):
        self.upload_content = ''
        self.download_content = ''

    def net_slot(self,upload_content,download_content):
        self.upload_lab.setText(upload_content)
        self.download_lab.setText(download_content)

    
    def mousePressEvent(self, event):
        '''
        重寫按下事件
        '''                             
        self.start_x = event.x()                        
        self.start_y = event.y()

    def mouseMoveEvent(self, event):
        '''
        重寫移動事件
        '''                              
        dis_x = event.x() - self.start_x
        dis_y = event.y() - self.start_y
        self.move(self.x()+dis_x, self.y()+dis_y)

class NetThread(QThread):
    net_signal = pyqtSignal(str,str)
    def __init__(self):
        super(NetThread,self).__init__()

    def net_func(self):
        parameter = psutil.net_io_counters()
        recv1 = parameter[1] #接收數(shù)據(jù)
        send1 = parameter[0] #上傳數(shù)據(jù)
        time.sleep(1)  # 每隔1s監(jiān)聽端口接收數(shù)據(jù)
        parameter = psutil.net_io_counters()
        recv2 = parameter[1]
        send2 = parameter[0]
        self.upload_content = '{:.1f} kb/s.'.format((send2 - send1) / 1024.0)
        self.download_content = '{:.1f} kb/s.'.format((recv2 - recv1) / 1024.0)

    def run(self):
        while(1):
            self.net_func()
            self.net_signal.emit(self.upload_content,self.download_content)
            time.sleep(1)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    dispaly = NetWindows()
    dispaly.show()
    netwidows = NetWindows()
    sys.exit(app.exec_())

成果展示

在這里插入圖片描述

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