Python结合pyqt5、qrcode、PIL编写的二维码生成及美化程序代码

0.概述

业余时间学Python，打发时间。这次算是做了个练习，主要用到pyqt5、qrcode、PIL库。学Python太难了，感觉越学越迷糊，教程书都是入门的东西，真正做起小程序来根本就搞不来，一顿百度操作。说实在，很多东西都没有具体的讲解，纯粹靠蒙。

1.引用的库

# -*- coding: utf-8 -*-

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.Qt import QFont, QColor
from PyQt5.QtWidgets import QApplication, QWidget, QMessageBox , QFileDialog , QColorDialog
from PyQt5.QtGui import QPixmap
import sys, os, qrcode, ihelp, idata
from PIL import Image , ImageQt , ImageEnhance , ImageDraw

2.重载标签类

class MyLabel(QtWidgets.QLabel):    #重载标签类，添加双击事件信号
    DoubleClicked = QtCore.pyqtSignal() #自定义信号
    def __init__(self, parent=None):
        super(MyLabel, self).__init__(parent)
    def mouseDoubleClickEvent(self, event): #双击事件
        if event.buttons () == QtCore.Qt.LeftButton:
            self.DoubleClicked.emit()   #发射信号

3.主窗口ui函数

class Ui_MainWindow(QWidget):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(750, 545)
        MainWindow.setFixedSize(MainWindow.width(), MainWindow.height())    #固定窗口大小，取消最大化
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(MainWindow.sizePolicy().hasHeightForWidth())
        MainWindow.setSizePolicy(sizePolicy)
        icon = QtGui.QIcon()
        icon.addPixmap(QtGui.QPixmap("source/icon.ico"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        MainWindow.setWindowIcon(icon)
        self.setWindowIcon(QtGui.QIcon("source/icon.ico"))
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton_creatqrcode = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_creatqrcode.setGeometry(QtCore.QRect(570, 370, 81, 31))
        icon1 = QtGui.QIcon()
        icon1.addPixmap(QtGui.QPixmap("source/creat.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.pushButton_creatqrcode.setIcon(icon1)
        self.pushButton_creatqrcode.setObjectName("pushButton_creatqrcode")
        self.label_qrcode_img = QtWidgets.QLabel(self.centralwidget)
        self.label_qrcode_img.setGeometry(QtCore.QRect(400, 10, 341, 341))
        self.label_qrcode_img.setFrameShape(QtWidgets.QFrame.Box)
        self.label_qrcode_img.setFrameShadow(QtWidgets.QFrame.Raised)
        self.label_qrcode_img.setAlignment(QtCore.Qt.AlignCenter)
        self.label_qrcode_img.setObjectName("label_qrcode_img")
        self.pushButton_saveqrcode = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_saveqrcode.setGeometry(QtCore.QRect(660, 370, 81, 31))
        icon2 = QtGui.QIcon()
        icon2.addPixmap(QtGui.QPixmap("source/save.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.pushButton_saveqrcode.setIcon(icon2)
        self.pushButton_saveqrcode.setObjectName("pushButton_saveqrcode")
        self.pushButton_about = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_about.setGeometry(QtCore.QRect(660, 470, 81, 31))
        self.pushButton_about.setObjectName("pushButton_about")
        self.pushButton_help = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_help.setGeometry(QtCore.QRect(570, 470, 81, 31))
        self.pushButton_help.setObjectName("pushButton_help")
        self.groupBox_center_pic = QtWidgets.QGroupBox(self.centralwidget)
        self.groupBox_center_pic.setGeometry(QtCore.QRect(10, 440, 251, 101))
        self.groupBox_center_pic.setChecked(False)
        self.groupBox_center_pic.setObjectName("groupBox_center_pic")
        self.label_center_picture = QtWidgets.QLabel(self.groupBox_center_pic)
        self.label_center_picture.setGeometry(QtCore.QRect(10, 20, 71, 71))
        self.label_center_picture.setFrameShape(QtWidgets.QFrame.Box)
        self.label_center_picture.setAlignment(QtCore.Qt.AlignCenter)
        self.label_center_picture.setObjectName("label_center_picture")
        self.labe_2 = QtWidgets.QLabel(self.groupBox_center_pic)
        self.labe_2.setGeometry(QtCore.QRect(160, 30, 24, 12))
        self.labe_2.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)
        self.labe_2.setObjectName("labe_2")
        self.comboBox_pic_size = QtWidgets.QComboBox(self.groupBox_center_pic)
        self.comboBox_pic_size.setGeometry(QtCore.QRect(190, 20, 51, 30))
        self.comboBox_pic_size.setObjectName("comboBox_pic_size")
        self.labe_3 = QtWidgets.QLabel(self.groupBox_center_pic)
        self.labe_3.setGeometry(QtCore.QRect(160, 70, 24, 12))
        self.labe_3.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)
        self.labe_3.setObjectName("labe_3")
        self.comboBox_pic_circle = QtWidgets.QComboBox(self.groupBox_center_pic)
        self.comboBox_pic_circle.setGeometry(QtCore.QRect(190, 60, 51, 30))
        self.comboBox_pic_circle.setObjectName("comboBox_pic_circle")
        self.pushButton_addcenterpic = QtWidgets.QPushButton(self.groupBox_center_pic)
        self.pushButton_addcenterpic.setGeometry(QtCore.QRect(90, 20, 51, 31))
        self.pushButton_addcenterpic.setObjectName("pushButton_addcenterpic")
        self.pushButton_delcenterpic = QtWidgets.QPushButton(self.groupBox_center_pic)
        self.pushButton_delcenterpic.setGeometry(QtCore.QRect(90, 60, 51, 31))
        self.pushButton_delcenterpic.setObjectName("pushButton_delcenterpic")
        self.groupBox_bk_pic = QtWidgets.QGroupBox(self.centralwidget)
        self.groupBox_bk_pic.setGeometry(QtCore.QRect(270, 360, 291, 181))
        self.groupBox_bk_pic.setObjectName("groupBox_bk_pic")
        self.comboBox_bk_contrast = QtWidgets.QComboBox(self.groupBox_bk_pic)
        self.comboBox_bk_contrast.setGeometry(QtCore.QRect(230, 140, 51, 30))
        self.comboBox_bk_contrast.setObjectName("comboBox_bk_contrast")
        self.labe_5 = QtWidgets.QLabel(self.groupBox_bk_pic)
        self.labe_5.setGeometry(QtCore.QRect(180, 150, 36, 12))
        self.labe_5.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)
        self.labe_5.setObjectName("labe_5")
        self.comboBox_bk_tran = QtWidgets.QComboBox(self.groupBox_bk_pic)
        self.comboBox_bk_tran.setGeometry(QtCore.QRect(230, 100, 51, 30))
        self.comboBox_bk_tran.setObjectName("comboBox_bk_tran")
        self.labe_6 = QtWidgets.QLabel(self.groupBox_bk_pic)
        self.labe_6.setGeometry(QtCore.QRect(180, 110, 36, 12))
        self.labe_6.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)
        self.labe_6.setObjectName("labe_6")
        self.label_bk_picture = QtWidgets.QLabel(self.groupBox_bk_pic)
        self.label_bk_picture.setGeometry(QtCore.QRect(10, 20, 151, 151))
        self.label_bk_picture.setFrameShape(QtWidgets.QFrame.Box)
        self.label_bk_picture.setAlignment(QtCore.Qt.AlignCenter)
        self.label_bk_picture.setObjectName("label_bk_picture")
        self.pushButton_addbkpic = QtWidgets.QPushButton(self.groupBox_bk_pic)
        self.pushButton_addbkpic.setGeometry(QtCore.QRect(170, 20, 51, 31))
        self.pushButton_addbkpic.setObjectName("pushButton_addbkpic")
        self.pushButton_delbkpic = QtWidgets.QPushButton(self.groupBox_bk_pic)
        self.pushButton_delbkpic.setGeometry(QtCore.QRect(230, 20, 51, 31))
        self.pushButton_delbkpic.setObjectName("pushButton_delbkpic")
        self.comboBox_bk_mode = QtWidgets.QComboBox(self.groupBox_bk_pic)
        self.comboBox_bk_mode.setGeometry(QtCore.QRect(230, 60, 51, 30))
        self.comboBox_bk_mode.setObjectName("comboBox_bk_mode")
        self.labe_10 = QtWidgets.QLabel(self.groupBox_bk_pic)
        self.labe_10.setGeometry(QtCore.QRect(190, 70, 24, 12))
        self.labe_10.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)
        self.labe_10.setObjectName("labe_10")
        self.groupBox_3 = QtWidgets.QGroupBox(self.centralwidget)
        self.groupBox_3.setGeometry(QtCore.QRect(10, 10, 251, 241))
        self.groupBox_3.setObjectName("groupBox_3")
        self.plainTextEdit = QtWidgets.QPlainTextEdit(self.groupBox_3)
        self.plainTextEdit.setGeometry(QtCore.QRect(10, 20, 231, 171))
        self.plainTextEdit.setObjectName("plainTextEdit")
        self.pushButton_openinfo = QtWidgets.QPushButton(self.groupBox_3)
        self.pushButton_openinfo.setGeometry(QtCore.QRect(10, 200, 71, 31))
        self.pushButton_openinfo.setObjectName("pushButton_openinfo")
        self.pushButton_saveinfo = QtWidgets.QPushButton(self.groupBox_3)
        self.pushButton_saveinfo.setGeometry(QtCore.QRect(90, 200, 71, 31))
        self.pushButton_saveinfo.setObjectName("pushButton_saveinfo")
        self.checkBox_autoline = QtWidgets.QCheckBox(self.groupBox_3)
        self.checkBox_autoline.setGeometry(QtCore.QRect(170, 208, 71, 16))
        sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.checkBox_autoline.sizePolicy().hasHeightForWidth())
        self.checkBox_autoline.setSizePolicy(sizePolicy)
        self.checkBox_autoline.setObjectName("checkBox_autoline")
        self.groupBox_style = QtWidgets.QGroupBox(self.centralwidget)
        self.groupBox_style.setGeometry(QtCore.QRect(10, 260, 251, 171))
        self.groupBox_style.setObjectName("groupBox_style")
        self.label_block_style = QtWidgets.QLabel(self.groupBox_style)
        self.label_block_style.setGeometry(QtCore.QRect(10, 20, 141, 141))
        self.label_block_style.setFrameShape(QtWidgets.QFrame.Box)
        self.label_block_style.setFrameShadow(QtWidgets.QFrame.Raised)
        self.label_block_style.setAlignment(QtCore.Qt.AlignCenter)
        self.label_block_style.setObjectName("label_block_style")
        self.comboBox_block_size = QtWidgets.QComboBox(self.groupBox_style)
        self.comboBox_block_size.setGeometry(QtCore.QRect(190, 60, 51, 30))
        self.comboBox_block_size.setObjectName("comboBox_block_size")
        self.labe_4 = QtWidgets.QLabel(self.groupBox_style)
        self.labe_4.setGeometry(QtCore.QRect(160, 70, 24, 12))
        self.labe_4.setAlignment(QtCore.Qt.AlignCenter)
        self.labe_4.setObjectName("labe_4")
        self.label_block_color = MyLabel(self.groupBox_style)
        self.label_block_color.setGeometry(QtCore.QRect(190, 100, 51, 31))
        self.label_block_color.setFrameShape(QtWidgets.QFrame.NoFrame)
        self.label_block_color.setText("")
        self.label_block_color.setObjectName("label_block_color")
        self.label_4 = QtWidgets.QLabel(self.groupBox_style)
        self.label_4.setGeometry(QtCore.QRect(160, 110, 24, 12))
        self.label_4.setAlignment(QtCore.Qt.AlignCenter)
        self.label_4.setObjectName("label_4")
        self.checkBox_white_block = QtWidgets.QCheckBox(self.groupBox_style)
        self.checkBox_white_block.setGeometry(QtCore.QRect(160, 140, 81, 30))
        self.checkBox_white_block.setObjectName("checkBox_white_block")
        self.labe_8 = QtWidgets.QLabel(self.groupBox_style)
        self.labe_8.setGeometry(QtCore.QRect(160, 30, 24, 12))
        self.labe_8.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)
        self.labe_8.setObjectName("labe_8")
        self.comboBox_block_shape = QtWidgets.QComboBox(self.groupBox_style)
        self.comboBox_block_shape.setGeometry(QtCore.QRect(190, 20, 51, 30))
        self.comboBox_block_shape.setObjectName("comboBox_block_shape")
        self.comboBox_st_block_size = QtWidgets.QComboBox(self.centralwidget)
        self.comboBox_st_block_size.setGeometry(QtCore.QRect(330, 50, 61, 30))
        self.comboBox_st_block_size.setCurrentText("")
        self.comboBox_st_block_size.setObjectName("comboBox_st_block_size")
        self.label_1 = QtWidgets.QLabel(self.centralwidget)
        self.label_1.setGeometry(QtCore.QRect(270, 19, 48, 12))
        self.label_1.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)
        self.label_1.setObjectName("label_1")
        self.label_5 = QtWidgets.QLabel(self.centralwidget)
        self.label_5.setGeometry(QtCore.QRect(270, 59, 48, 12))
        self.label_5.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)
        self.label_5.setObjectName("label_5")
        self.comboBox_error_correct = QtWidgets.QComboBox(self.centralwidget)
        self.comboBox_error_correct.setGeometry(QtCore.QRect(330, 10, 61, 30))
        self.comboBox_error_correct.setObjectName("comboBox_error_correct")
        self.comboBox_edge = QtWidgets.QComboBox(self.centralwidget)
        self.comboBox_edge.setGeometry(QtCore.QRect(330, 90, 61, 30))
        self.comboBox_edge.setCurrentText("")
        self.comboBox_edge.setObjectName("comboBox_edge")
        self.label_3 = QtWidgets.QLabel(self.centralwidget)
        self.label_3.setGeometry(QtCore.QRect(270, 99, 48, 12))
        self.label_3.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)
        self.label_3.setObjectName("label_3")
        self.comboBox_border_size = QtWidgets.QComboBox(self.centralwidget)
        self.comboBox_border_size.setGeometry(QtCore.QRect(330, 130, 61, 30))
        self.comboBox_border_size.setCurrentText("")
        self.comboBox_border_size.setObjectName("comboBox_border_size")
        self.label_7 = QtWidgets.QLabel(self.centralwidget)
        self.label_7.setGeometry(QtCore.QRect(270, 138, 48, 12))
        self.label_7.setAlignment(QtCore.Qt.AlignLeading|QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter)
        self.label_7.setObjectName("label_7")
        self.label_border_color = MyLabel(self.centralwidget)
        self.label_border_color.setGeometry(QtCore.QRect(330, 172, 61, 30))
        self.label_border_color.setFrameShape(QtWidgets.QFrame.NoFrame)
        self.label_border_color.setText("")
        self.label_border_color.setObjectName("label_border_color")
        self.label_8 = QtWidgets.QLabel(self.centralwidget)
        self.label_8.setGeometry(QtCore.QRect(270, 180, 48, 12))
        self.label_8.setObjectName("label_8")
        self.label_background_color = MyLabel(self.centralwidget)
        self.label_background_color.setGeometry(QtCore.QRect(330, 213, 61, 30))
        self.label_background_color.setText("")
        self.label_background_color.setObjectName("label_background_color")
        self.label_2 = QtWidgets.QLabel(self.centralwidget)
        self.label_2.setGeometry(QtCore.QRect(580, 520, 161, 21))
        self.label_2.setAlignment(QtCore.Qt.AlignRight|QtCore.Qt.AlignTrailing|QtCore.Qt.AlignVCenter)
        self.label_2.setObjectName("label_2")
        self.pushButton_save_set = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_save_set.setGeometry(QtCore.QRect(570, 420, 81, 31))
        self.pushButton_save_set.setObjectName("pushButton_save_set")
        self.pushButton_open_set = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_open_set.setGeometry(QtCore.QRect(660, 420, 81, 31))
        self.pushButton_open_set.setObjectName("pushButton_open_set")
        self.groupBox = QtWidgets.QGroupBox(self.centralwidget)
        self.groupBox.setGeometry(QtCore.QRect(270, 260, 121, 61))
        self.groupBox.setObjectName("groupBox")
        self.comboBox_version = QtWidgets.QComboBox(self.groupBox)
        self.comboBox_version.setGeometry(QtCore.QRect(10, 20, 51, 30))
        self.comboBox_version.setObjectName("comboBox_version")
        self.checkBox_version = QtWidgets.QCheckBox(self.groupBox)
        self.checkBox_version.setGeometry(QtCore.QRect(70, 28, 47, 16))
        self.checkBox_version.setObjectName("checkBox_version")
        self.checkBox_bk_color = QtWidgets.QCheckBox(self.centralwidget)
        self.checkBox_bk_color.setGeometry(QtCore.QRect(270, 220, 59, 16))
        self.checkBox_bk_color.setObjectName("checkBox_bk_color")
        MainWindow.setCentralWidget(self.centralwidget)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "二维码生成器"))
        self.pushButton_creatqrcode.setText(_translate("MainWindow", "生成"))
        self.label_qrcode_img.setText(_translate("MainWindow", "二维码图片预览"))
        self.pushButton_saveqrcode.setText(_translate("MainWindow", "保存"))
        self.pushButton_about.setText(_translate("MainWindow", "关于"))
        self.pushButton_help.setText(_translate("MainWindow", "帮助"))
        self.groupBox_center_pic.setTitle(_translate("MainWindow", "嵌入图像"))
        self.label_center_picture.setText(_translate("MainWindow", "预览"))
        self.labe_2.setText(_translate("MainWindow", "大小"))
        self.labe_3.setText(_translate("MainWindow", "圆角"))
        self.pushButton_addcenterpic.setText(_translate("MainWindow", "添加"))
        self.pushButton_delcenterpic.setText(_translate("MainWindow", "取消"))
        self.groupBox_bk_pic.setTitle(_translate("MainWindow", "背景图片"))
        self.labe_5.setText(_translate("MainWindow", "对比度"))
        self.labe_6.setText(_translate("MainWindow", "透明度"))
        self.label_bk_picture.setText(_translate("MainWindow", "预览"))
        self.pushButton_addbkpic.setText(_translate("MainWindow", "添加"))
        self.pushButton_delbkpic.setText(_translate("MainWindow", "取消"))
        self.labe_10.setText(_translate("MainWindow", "模式"))
        self.groupBox_3.setTitle(_translate("MainWindow", "二维码信息"))
        self.pushButton_openinfo.setText(_translate("MainWindow", "打开"))
        self.pushButton_saveinfo.setText(_translate("MainWindow", "保存"))
        self.checkBox_autoline.setText(_translate("MainWindow", "自动换行"))
        self.groupBox_style.setTitle(_translate("MainWindow", "码块样式"))
        self.label_block_style.setText(_translate("MainWindow", "预览"))
        self.labe_4.setText(_translate("MainWindow", "大小"))
        self.label_4.setText(_translate("MainWindow", "颜色"))
        self.checkBox_white_block.setText(_translate("MainWindow", "白色码块"))
        self.labe_8.setText(_translate("MainWindow", "形状"))
        self.label_1.setText(_translate("MainWindow", "容错级别"))
        self.label_5.setText(_translate("MainWindow", "标码大小"))
        self.label_3.setText(_translate("MainWindow", "边缘空白"))
        self.label_7.setText(_translate("MainWindow", "边框宽度"))
        self.label_8.setText(_translate("MainWindow", "边框颜色"))
        self.label_2.setText(_translate("MainWindow", "Ver: 3.0.2  狗尾草"))
        self.pushButton_save_set.setText(_translate("MainWindow", "保存配置"))
        self.pushButton_open_set.setText(_translate("MainWindow", "导入配置"))
        self.groupBox.setTitle(_translate("MainWindow", "版本号"))
        self.checkBox_version.setText(_translate("MainWindow", "自动"))
        self.checkBox_bk_color.setText(_translate("MainWindow", "背景色"))

4.初始化控件

	self._init_widget()  #初始化控件

    def _init_widget(self):      #自定义初始化控件
        #初始化变量
        self.__QrcodeImg = None  #定义私有成员二维码图片变量，保存生成的二维码图片
        self.__CenterImg = None  #定义私有成员图片文件名变量，保存添加图片的绝对路径文件名 
        self.__CenterImg_Change = None
        self.__BkImg = None
        self.__BkImg_Change = None
        self.__BlockColor = (0,0,0)
        self.__BorderColor =  (0,170,0)
        self.__BkColor = (255,255,255)

        #初始化二维码主要参数
        self.comboBox_error_correct.addItems(['L  7%', 'M 15%', 'Q 25%', 'H 30%'])  #容错级别
        #self.comboBox_error_correct.setCurrentIndex(1) #设置默认为 M
        for i in range(10, 81):self.comboBox_st_block_size.addItem(str(i) + ' px') #标码大小
        self.comboBox_st_block_size.setCurrentIndex(20) #标准码块的大小
        self.comboBox_edge.addItem('无')
        for i in range(1, 41): self.comboBox_edge.addItem(str(i) + '%')     #边缘空白
        self.comboBox_border_size.addItem('无')
        for i in range(3, 51): self.comboBox_border_size.addItem(str(i/10) + '%')    #边框宽度
        self.label_border_color.setStyleSheet('background-color:rgb(0,170,0)')  #边框默认颜色
        self.label_border_color.DoubleClicked.connect(self.SetBorderColor)  #边框颜色标签双击事件
        self.checkBox_bk_color.setChecked(True) #背景颜色复选框默认选中
        self.checkBox_bk_color.stateChanged.connect(self.SetBkColorState)   #背景颜色复选框状态改变事件
        self.label_background_color.setStyleSheet('background-color:rgb(255,255,255)')  #背景颜色
        self.label_background_color.DoubleClicked.connect(self.SetBackgroundColor)  #背景颜色标签双击事件
        self.checkBox_version.setChecked(True)  #版本号自动复选框默认选中
        self.checkBox_version.stateChanged.connect(self.SetVersion) #版本号复选框状态改变事件
        for i in range(1, 41): self.comboBox_version.addItem(str(i))    #版本号
        self.comboBox_version.setEnabled(False) #版本号下拉框默认不可用

        #主功能按钮
        self.pushButton_creatqrcode.clicked.connect(self.CreatQrcode)   #生成二维码
        self.pushButton_saveqrcode.clicked.connect(self.SaveQrcode) #保存二维码
        self.pushButton_save_set.clicked.connect(self.SaveSet)  #保存配置
        self.pushButton_open_set.clicked.connect(self.OpenSet)  #导入配置
        self.pushButton_help.clicked.connect(self.Help) #帮助
        self.pushButton_about.clicked.connect(self.About)   #关于

        #二维码文本信息：打开、保存、自动换行
        self.pushButton_openinfo.clicked.connect(self.OpenFile) #打开信息
        self.pushButton_saveinfo.clicked.connect(self.SaveFile) #保存信息
        self.plainTextEdit.setLineWrapMode(True)    #允许自动换行
        self.checkBox_autoline.setChecked(True) #自动换行复选框默认选中
        self.checkBox_autoline.stateChanged.connect(self.AutoLine) #自动换行复选框状态变化事件

        #码块样式
        self.comboBox_block_shape.addItems(['方形', '圆形', '菱形', '横纹', '竖纹', '十字'])    #码块的形状
        self.comboBox_block_shape.currentIndexChanged.connect(self.ChangeStyle) #码块形状下拉框事件处理
        for i in range(100, 9, -10): self.comboBox_block_size.addItem(str(i) + '%') #码块的大小
        self.label_block_color.setStyleSheet('background-color:rgb(0,0,0)') #码块的颜色
        self.label_block_color.DoubleClicked.connect(self.SetBlockColor)    #码块颜色标签双击事件
        self.comboBox_block_size.currentIndexChanged.connect(self.ChangeStyle)  #码块大小下拉框事件处理
        self.checkBox_white_block.setChecked(False) #白色码块，默认不选中
        self.checkBox_white_block.stateChanged.connect(self.ChangeStyle)    #白色码块复选框状态改变事件
        self.ChangeStyle()  #调用样式设置函数一次，在预览中显示

        #嵌入图像
        self.comboBox_pic_size.setEnabled(False)    #图像大小下拉框默认不可用
        self.comboBox_pic_circle.setEnabled(False)  #图像圆角下拉框默认不可用
        self.pushButton_addcenterpic.clicked.connect(self.AddCenterPic) #添加图像按钮事件
        self.pushButton_delcenterpic.clicked.connect(self.DelCenterPic) #取消图像按钮事件
        for i in range(10, 31):self.comboBox_pic_size.addItem(str(i) + '%') #图像大小下拉框数值初始化
        self.comboBox_pic_size.setCurrentIndex(5)   #图像大小默认15%
        self.comboBox_pic_circle.addItem('无')
        for i in range(10, 101, 10):self.comboBox_pic_circle.addItem(str(i) + '%')  #圆角下拉框数值初始化
        self.comboBox_pic_circle.currentIndexChanged.connect(self.SetPicCirle)  #圆角下拉框事件处理

        #背景图片
        self.comboBox_bk_tran.setEnabled(False) #背景透明度默认不可用
        self.comboBox_bk_contrast.setEnabled(False) #背景对比度默认不可用
        self.comboBox_bk_mode.setEnabled(False) #背景模式默认不可用
        self.comboBox_bk_mode.addItems(['拉伸','裁剪']) #模式下拉框数值
        for i in range(0, 91, 10): self.comboBox_bk_tran.addItem(str(i) + '%')  #透明度下拉框数值
        self.comboBox_bk_contrast.addItems(['1.0', '0.9', '0.8', '0.7', '0.6', '0.5', '0.4', '0.3', '0.2', '0.1'])  #添加背景对比度下拉框数值
        self.pushButton_addbkpic.clicked.connect(self.AddBkPic) #添加背景按钮事件
        self.pushButton_delbkpic.clicked.connect(self.DelBkPic) #取消背景按钮事件
        self.comboBox_bk_mode.currentIndexChanged.connect(self.UpdateBkPic) #模式下拉框事件处理
        self.comboBox_bk_tran.currentIndexChanged.connect(self.UpdateBkPic) #透明度下拉框事件处理
        self.comboBox_bk_contrast.currentIndexChanged.connect(self.UpdateBkPic) #对比度下拉框事件处理

5.边框颜色、背景颜色、版本号控件操作函数

    def SetBorderColor(self):   #设置边框颜色
        c='#'
        for i in self.__BorderColor:    #把颜色元组转换成16进制的字符串
            c += str(hex(i))[-2:].replace('x', '0')
        col = QColorDialog.getColor(QColor(c))  #调用颜色选择对话框，默认为之前的颜色
        if col.isValid():             #把选中的颜色进行通道分离
            r = int(col.name()[1:3], 16)
            g = int(col.name()[3:5], 16)
            b = int(col.name()[5:7], 16)
            self.__BorderColor =  (r, g, b)
            self.label_border_color.setStyleSheet('background-color:' + col.name())

    def SetBackgroundColor(self):   #设置背景颜色
        c = '#'
        for i in self.__BkColor:
            c += str(hex(i))[-2:].replace('x', '0')
        col = QColorDialog.getColor(QColor(c))
        if col.isValid():
            r = int(col.name()[1:3], 16)
            g = int(col.name()[3:5], 16)
            b = int(col.name()[5:7], 16)
            self.__BkColor =  (r, g, b)
            self.label_background_color.setStyleSheet('background-color:' + col.name())

    def SetBkColorState(self):  #背景颜色复选框状态判断
        if self.checkBox_bk_color.isChecked():
            self.label_background_color.setEnabled(True)
        else:
            self.label_background_color.setEnabled(False)

    def SetVersion(self):   #设置版本
        if self.checkBox_version.isChecked():
            self.comboBox_version.setEnabled(False)
        else:
            self.comboBox_version.setEnabled(True)

6.文本信息的操作函数

    def OpenFile(self): #打开信息
        filename, filetype = QFileDialog.getOpenFileName(self, "选取文件", "", "文本文件 (*.txt)") 
        if filename:
            rf = open(filename, 'r')
            self.plainTextEdit.setPlainText('')
            for line in rf.readlines():
                line = line.strip()
                self.plainTextEdit.appendPlainText(line)
            rf.close()

    def SaveFile(self): #保存信息
        filename, filetype = QFileDialog.getSaveFileName(self, "文件保存", "", "文本文件 (*.txt)")
        if filename:
            wf = open(filename, 'w')
            wf.write(self.plainTextEdit.toPlainText())
            wf.close()

    def AutoLine(self): #自动换行
        if self.checkBox_autoline.isChecked():
            self.plainTextEdit.setLineWrapMode(True)
        else:
            self.plainTextEdit.setLineWrapMode(False)

7.帮助和关于

	def Help(self): #帮助
        MyDialog = QtWidgets.QDialog()
        ui = ihelp.Ui_Dialog_help()
        ui.setupUi(MyDialog)
        MyDialog.show()
        MyDialog.exec_()

    def About(self):    #关于
        QMessageBox.about(self, '关于二维码生成器', idata.abouttxt)

8.生成二维码的主函数

    def CreatQrcode(self):  #生成二维码
        if self.plainTextEdit.toPlainText() == '':    #判断文本信息框是否有内容
            QMessageBox.information(self, '提示', '请先输入文本信息！', QMessageBox.Ok, QMessageBox.Ok)
            self.plainTextEdit.setFocus()
            return
        error_correct = [qrcode.ERROR_CORRECT_L, qrcode.ERROR_CORRECT_M, qrcode.ERROR_CORRECT_Q, qrcode.ERROR_CORRECT_H]
        Num_error_correct = error_correct[self.comboBox_error_correct.currentIndex()]
        if self.checkBox_version.isChecked():   #根据版本号是否自动设置参数
            Num_fit = True
            ver = None
        else:
            Num_fit = False
            ver = self.comboBox_version.currentIndex() + 1
        try:
            qr = qrcode.QRCode(
                version = ver,  #编码版本，即大小1-40，自动None
                error_correction = Num_error_correct,    #设置容错率
                box_size = 1,
                border = 0,  #设置边框宽度
            )
            qr.add_data(self.plainTextEdit.toPlainText())
            qr.make(fit = Num_fit)
            data = qr.get_matrix()  #二维码数据列表
        except:
            QMessageBox.information(self, '错误', '文本信息内容过多或者版本号过低，' +
                '请重新输入文本信息或者选择\n更高的版本号(建议设置为自动，以适配最合适的版本号)。', 
                QMessageBox.Ok, QMessageBox.Ok
            )
            return        
        self.comboBox_version.setCurrentIndex(qr.version - 1)   #把版本号下拉框数值设置为当前版本号
        self.label_qrcode_img.setText('正在生成二维码，请稍候...')
        QApplication.processEvents() #实时刷新界面，使标签文本立即显示
        img = self.CreatImg(data)   #调用二维码图像生成函数
        qrsize, qrsize = img.size
        if self.__CenterImg_Change != None: #把图像嵌入到二维码图片中心
            sz = int(qrsize * (self.comboBox_pic_size.currentIndex() + 10) / 100)
            cimg = self.__CenterImg_Change.resize((sz, sz))
            sz = int((qrsize - sz) / 2)
            img.paste(cimg, (sz, sz), cimg)
        if self.__BkImg_Change != None: #如果选择了背景图片，则把背景变量设为背景图片
            bk = self.__BkImg_Change.resize((qrsize, qrsize))
        elif self.checkBox_bk_color.isChecked():    #如果没有选择背景图片，但背景颜色下拉框被选中，则根据背景颜色创建一个背景变量
            bk = Image.new('RGBA', (qrsize, qrsize), self.__BkColor)
        else:       #如果无背景图片，且无背景色，则创建一个透明背景
            bk = Image.new('RGBA', (qrsize , qrsize), (255, 255, 255, 0))
        sz = int(self.comboBox_edge.currentIndex() * qrsize / 100) #根据边缘空白计算图像尺寸
        img = img.resize((qrsize - 2 * sz, qrsize - 2 * sz))    #缩小二维码图像尺寸
        bk.paste(img, (sz, sz), img)    #把二维码图像粘贴到背景上
        img = bk    #把新的二维码图片重新赋值给img变量
        if self.comboBox_border_size.currentIndex() > 0: #画边框
            bk = Image.new('RGBA', (qrsize, qrsize), (255, 255, 255, 0))    #创建一个二维码图像大小的空白背景
            sz = int((self.comboBox_border_size.currentIndex()+2) * qrsize / 1000)  #根据边框下拉框数值计算边框尺寸
            #在四个边画填充的矩形
            bk_draw = ImageDraw.Draw(bk)
            bk_draw.rectangle((0, 0, qrsize - 1, sz - 1), fill = self.__BorderColor)
            bk_draw.rectangle((0, 0, sz - 1, qrsize - 1), fill = self.__BorderColor)
            bk_draw.rectangle((qrsize - sz - 1, 0, qrsize - 1, qrsize - 1), fill = self.__BorderColor)
            bk_draw.rectangle((0, qrsize - sz - 1, qrsize - 1, qrsize - 1), fill = self.__BorderColor)
            img = img.resize((qrsize - 2 * sz, qrsize - 2 * sz))    #根据边框尺寸缩小二维码图片
            bk.paste(img, (sz, sz), img) #把二维码图像粘贴到背景上
            img = bk    #把新的二维码图片重新赋值给img变量
        self.__QrcodeImg = img  #把最终的二维码图片赋值给全局变量用作保存文件
        qimg = ImageQt.ImageQt(img)  #把PIL的Image图像转换成PYQT5的Qimage图像
        qimg = qimg.scaled(self.label_qrcode_img.width() - 10, self.label_qrcode_img.height() - 10) #设置图像大小与label大小一致
        self.label_qrcode_img.setPixmap(QPixmap.fromImage(qimg)) #把Qimage图像转换成QPixmap图像并显示在label上

9.保存生成的二维码

    def SaveQrcode(self):   #保存二维码
        if self.__QrcodeImg == None:
            QMessageBox.information(self, '提示', '请先生成二维码！', QMessageBox.Ok, QMessageBox.Ok)
            return
        else:
            filename, filetype = QFileDialog.getSaveFileName(self, "文件保存", "", "图像文件 (*.png);;图像文件 (*.jpg)")
            if filename:
                if filetype =='图像文件 (*.jpg)':   #如果保存成jpe文件，则把图像转变成RGB格式
                    img = self.__QrcodeImg.convert('RGB')
                    img.save(filename, 'JPEG')
                else:
                    self.__QrcodeImg.save(filename, 'PNG')

10.码块颜色设置及样式显示函数

    def SetBlockColor(self):    #设置码块颜色
        c = '#'
        for i in self.__BlockColor:
            c += str(hex(i))[-2:].replace('x', '0')
        col = QColorDialog.getColor(QColor(c))
        if col.isValid():
            r = int(col.name()[1:3], 16)
            g = int(col.name()[3:5], 16)
            b = int(col.name()[5:7], 16)
            self.__BlockColor =  (r, g, b)
            self.label_block_color.setStyleSheet('background-color:' + col.name())
            self.ChangeStyle()
            
    def ChangeStyle(self): #刷新样式标签
        img = self.CreatImg(idata.qrdata, 'style') #调用二维码生成函数生成一个样式二维码图片
        qimg = ImageQt.ImageQt(img)  #把PIL的Image图像转换成PYQT5的Qimage图像
        qimg = qimg.scaled(self.label_block_style.width() - 10, self.label_block_style.height() - 10) #设置图像大小与label大小一致
        self.label_block_style.setPixmap(QPixmap.fromImage(qimg)) #把Qimage图像转换成QPixmap图像并显示在label上

11.根据数据列表画出二维码图片

    def CreatImg(self, data = [], flag = None):   #根据列表数据创建二维码标准图片
        if flag == 'style': #如果flag为'style'，则说明是码块样式设置调用的此函数
            boxsize = 10
        else:
            boxsize = self.comboBox_st_block_size.currentIndex() + 10   #把标准码块大小设置成下拉框的数值
        bs2 = 2*boxsize
        #画一个自定义颜色的标准码块和一个自定义大小的码块
        bblock0 = Image.new('RGBA', (bs2,bs2), (255,255,255,0))
        bblock0_draw = ImageDraw.Draw(bblock0)
        shape = self.comboBox_block_shape.currentText()
        si = int((100 - self.comboBox_block_size.currentIndex()*10) * boxsize / 100)
        if shape == '方形':
            bblock0_draw.rectangle((0, 0, bs2 - 1,bs2 - 1), fill = self.__BlockColor)
            w = si
            h = si
        elif shape == '圆形':
            bblock0_draw.ellipse((0, 0, bs2 - 1,bs2 - 1), fill = self.__BlockColor)
            w = si
            h = si
        elif shape == '菱形':
            bblock0_draw.polygon((boxsize - 1, 0, 0, boxsize - 1, boxsize - 1, bs2 - 1, bs2 - 1, boxsize - 1), fill = self.__BlockColor)
            w = si
            h = si
        elif shape == '横纹':
            bblock0_draw.rectangle((0, 0, bs2 - 1, bs2 - 1), fill = self.__BlockColor)
            w = boxsize
            h = si
        elif shape == '竖纹':
            bblock0_draw.rectangle((0, 0, bs2 - 1, bs2 - 1), fill = self.__BlockColor)
            w = si
            h = boxsize
        elif shape == '十字':
            bblock0_draw.rectangle((0, int(bs2 * 0.4), bs2 - 1, int(bs2 * 0.6)) ,fill = self.__BlockColor)
            bblock0_draw.rectangle((int(bs2 * 0.4), 0, int(bs2 * 0.6), bs2 - 1), fill = self.__BlockColor)
            w = si
            h = si
        bblock0=bblock0.resize((boxsize, boxsize))
        bblock0_change=bblock0.resize((w, h))
        bblock=Image.new('RGBA', (boxsize, boxsize), (255, 255, 255, 0))
        w0 = int((boxsize - w) / 2)
        h0 = int((boxsize - h) / 2)
        bblock.paste(bblock0_change, (w0, h0))
        #画一个白色的标准码块和一个自定义大小的码块
        if self.checkBox_white_block.isChecked():
            wblock0 = Image.new('RGBA', (bs2, bs2), (255, 255, 255, 0))
            wblock0_draw = ImageDraw.Draw(wblock0)
            if shape == '方形' or shape == '横纹' or shape == '竖纹':
                wblock0_draw.rectangle((0, 0, bs2 - 1,bs2 - 1), fill = (255, 255, 255))
            elif shape == '圆形':
                wblock0_draw.ellipse((0, 0, bs2 - 1, bs2 - 1), fill = (255, 255, 255))
            elif shape == '菱形':
                wblock0_draw.polygon((boxsize - 1, 0, 0, boxsize - 1, boxsize - 1, bs2 - 1, bs2 - 1, boxsize - 1), fill = (255, 255, 255))
            elif shape == '十字':
                wblock0_draw.rectangle((0, int(bs2 * 0.4), bs2 - 1, int(bs2 * 0.6)), fill = (255, 255, 255))
                wblock0_draw.rectangle((int(bs2 * 0.4), 0, int(bs2 * 0.6), bs2 - 1), fill = (255, 255, 255))
            wblock0 = wblock0.resize((boxsize, boxsize))
            wblock0_change = wblock0.resize((w, h))
            wblock = Image.new('RGBA', (boxsize, boxsize), (255, 255, 255, 0))
            wblock.paste(wblock0_change, (w0, h0))
        #把标准码块和自定义大小的码块粘贴到一个透明背景上
        num = len(data)
        size = num * boxsize
        img = Image.new('RGBA', (size, size), (255, 255, 255, 0))
        for h in range(num):
            for w in range(num):
                wb = w * boxsize
                wh = h * boxsize
                if data[h][w]:
                    if (w < 7 and h < 7) or (w > num - 8 and h < 7) or (w  <7 and h > num - 8): #判断定位图形的位置
                        img.paste(bblock0, (wb, wh))
                    else:
                        img.paste(bblock, (wb, wh))
                elif self.checkBox_white_block.isChecked():
                    if (w < 7 and h < 7) or (w > num - 8 and h < 7) or (w < 7 and h > num - 8): #判断定位图形的位置
                        img.paste(wblock0, (wb, wh)) 
                    else:
                        img.paste(wblock, (wb, wh))      
        return img

12.嵌入图像函数

    def AddCenterPic(self): #嵌入图片
        imgname, imgtype = QFileDialog.getOpenFileName(self, "选取图片", "", "图像文件 (*.png , *.jpg , *.bmp)") 
        if imgname:
            self.comboBox_pic_size.setEnabled(True)
            self.comboBox_pic_circle.setEnabled(True)
            img = Image.open(imgname)
            img = img.resize((1000, 1000))
            img = img.convert('RGBA')
            if imgname[-3:].upper() == 'PNG':   #如果打开的图片是png格式，则添加一个白色不透明的背景
                self.__CenterImg = Image.new('RGBA', img.size, (255, 255, 255, 255))
                self.__CenterImg.paste(img, (0, 0), img)
            else:
                self.__CenterImg = img
            self.__CenterImg_Change = self.__CenterImg
            self.SetPicCirle()

    def DelCenterPic(self): #删除嵌入图片
        self.label_center_picture.setText('预览')
        self.__CenterImg = None
        self.__CenterImg_Change = None
        self.comboBox_pic_size.setEnabled(False)
        self.comboBox_pic_circle.setEnabled(False)

    def SetPicCirle(self):  #对嵌入图片进行圆角处理
        wh = 1000
        pic = self.__CenterImg
        r = int(wh * self.comboBox_pic_circle.currentIndex() / 20)
        circle=Image.new('L', (r * 2,r * 2), 0)
        draw = ImageDraw.Draw(circle)
        draw.ellipse((0, 0, r * 2, r * 2), fill = 255)
        alpha = Image.new('L', (wh, wh), 255)
        alpha.paste(circle.crop((0, 0, r, r)), (0, 0))
        alpha.paste(circle.crop((0, r, r, r * 2)), (0, wh - r))
        alpha.paste(circle.crop((r, 0, r * 2, r)), (wh - r, 0))
        alpha.paste(circle.crop((r, r, r * 2, r * 2)), (wh - r, wh - r))
        #先对图像进行圆角处理，然后分三次粘贴到不同的背景上，达到边框立体的效果
        pic.putalpha(alpha)
        pic = pic.resize((wh - 80, wh - 80))
        pic0 = Image.new('RGBA', (wh, wh), (240, 240, 240, 255))
        pic0.putalpha(alpha)
        pic0 = pic0.resize((wh - 48, wh - 48))
        pic0.paste(pic, (16, 16), pic)
        pic = pic0
        pic0 = Image.new('RGBA', (wh, wh), (150, 150, 150, 255))
        pic0.putalpha(alpha)
        pic0 = pic0.resize((wh - 32, wh - 32))
        pic0.paste(pic, (8, 8), pic)
        pic = pic0
        pic0 = Image.new('RGBA', (wh, wh), (220, 220, 220, 255))
        pic0.putalpha(alpha)
        pic0.paste(pic, (16, 16), pic)
        self.__CenterImg_Change = pic0
        pic0 = ImageQt.ImageQt(pic0)
        pic0 = pic0.scaled(self.label_center_picture.width() - 5, self.label_center_picture.height() - 5)
        self.label_center_picture.setPixmap(QPixmap.fromImage(pic0))

13.背景图片函数

    def AddBkPic(self): #添加背景图片
        imgname, imgtype = QFileDialog.getOpenFileName(self,"选取图片","","图像文件 (*.png , *.jpg , *.bmp)") 
        if imgname:
            self.comboBox_bk_mode.setEnabled(True)
            self.comboBox_bk_tran.setEnabled(True)
            self.comboBox_bk_contrast.setEnabled(True)
            self.checkBox_bk_color.setEnabled(False)
            self.label_background_color.setEnabled(False)
            self.__BkImg=Image.open(imgname)
            self.UpdateBkPic()

    def UpdateBkPic(self):  #更新背景图片预览
        img = self.__BkImg
        img.convert('RGBA')
        w, h = img.size
        if self.comboBox_bk_mode.currentText() == '拉伸':
            sz = max([w, h])
            img = img.resize((sz, sz))
        else:
            sz = min([w, h])
            w = (w - sz) / 2
            h = (h - sz) / 2
            img = img.crop((w, h, w + sz, h + sz))
        alpha = Image.new('L', img.size, int((10  -self.comboBox_bk_tran.currentIndex()) * 25.5))
        img.putalpha(alpha)
        bk = Image.new('RGBA', img.size, (255, 255, 255, 255))
        bk.paste(img, (0, 0), img)  #把有透明度的图片贴到一张白色背景上
        img = bk
        img = ImageEnhance.Contrast(img)
        img = img.enhance(1 - self.comboBox_bk_contrast.currentIndex() / 10)
        self.__BkImg_Change = img
        img = ImageQt.ImageQt(img)
        img = img.scaled(self.label_bk_picture.width(), self.label_bk_picture.height())
        self.label_bk_picture.setPixmap(QPixmap.fromImage(img))

    def DelBkPic(self): #删除背景图片
        self.label_bk_picture.setText('背景预览')
        self.__BkImg = None
        self.__BkImg_Change = None
        self.comboBox_bk_mode.setEnabled(False)
        self.comboBox_bk_tran.setEnabled(False)
        self.comboBox_bk_contrast.setEnabled(False)
        self.checkBox_bk_color.setEnabled(True)
        self.label_background_color.setEnabled(True)

14.窗口实例化并显示

def show_MainWindow():  #创建窗口
    QtWidgets.QApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling) #控件自适应高分辨率屏幕    
    app = QtWidgets.QApplication(sys.argv)
    font = QFont("宋体")                #字体适应
    pointsize = font.pointSize()        #高分辨率
    font.setPixelSize(pointsize)        #屏幕
    app.setFont(font)                   #必要的字体设置    
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    translator = QtCore.QTranslator()       #实例化翻译类
    translator.load('source/qt_zh_CN.qm')   #加载翻译文件
    app.installTranslator(translator)       #给程序安装翻译文件
    MainWindow.show()
    sys.exit(app.exec_())

if __name__ == '__main__':
    show_MainWindow()