使用Python制作二维码生成软件

需求背景：
在制造业工厂为了满足产品的追溯性要求，我们经常需要给零件做标记，内容包括：产品的料号，工单号，序号，原材料提供商等

传统的做法是制作固定格式的标签，使用手工标记。

传统的做法的缺点：字迹因人而异不易辨认，信息录入靠手工易出错浪费人力

使用本程序后可打印二维码标签，使用二维码扫码枪录入信息

软件基本功能：
使用本程序能生成并打印二维码标签，标签中嵌入tab键能够自动换行

软件需求：
win10 win8 win7 64位操作系统
python 3.6 以上
第三方库 win32print,win32ui,qrcode

硬件需求：

  标签打印机
  1.热敏便宜但是标签只能保存一年
  2.推荐全树脂碳带打印机

# -*- coding: utf-8 -*- 
import sys
import qrcode
import os
import tkinter.ttk
from tkinter import *
import datetime
from PIL import ImageFont
from PIL import Image
from PIL import ImageDraw
from PIL import ImageWin
import win32print         
import win32ui
from tkinter.messagebox import *


def changeline(file_name,draw,im1):
        str=file_name.encode('GB2312').decode('latin-1')
        total_width=0
        duanluo = ""
        for char in str:   
            width=draw.textsize(char)[0]
            total_width+=width
            if total_width>0.65*im1.size[0]:
                total_width= 0
                duanluo += "\n"
            duanluo += char
        return duanluo.encode('latin-1')



def qrcreate(content,file_name): #生成二维码
   
    #path=os.getcwd()+"\picture"      
    if not os.path.exists("picture"):
          os.makedirs("picture")
          
    qr = qrcode.QRCode(
        version=4,
        error_correction=qrcode.constants.ERROR_CORRECT_H,
        box_size=2,
        border=25
    )

   
    qr.add_data(content)
    qr.make(fit=True)
    img = qr.make_image()
    
   
    img_file = os.getcwd()+"\picture\%s.png"%file_name
    #fontcn = ImageFont.truetype("C:\\WINDOWS\\Fonts\\Arial.TTF", 13, encoding="utf-8")  #从win10中调用字体但不支持中文
    fontcn = ImageFont.truetype("simhei.ttf", 13, encoding="utf-8")
    img.save(img_file)  #保存二维码在picture文件夹中
    im1=Image.open(img_file)
    draw = ImageDraw.Draw(im1)
   
    
    position=(im1.size[0]-90-draw.textsize(changeline(file_name,draw,im1))[0]/2)
   
    
    draw.text((position,130),changeline(file_name,draw,im1).decode('GB2312'),000,font=fontcn)
    im1.save(img_file)



def printqrcode(content,file_name):  #打印函数
   

    HORZRES = 8
    VERTRES = 10
  
    LOGPIXELSX = 88
    LOGPIXELSY = 90
 
    PHYSICALWIDTH = 110
    PHYSICALHEIGHT = 111
  
    PHYSICALOFFSETX = 112
    PHYSICALOFFSETY = 113

    printer_name = win32print.GetDefaultPrinter ()
   
    file_name = os.getcwd()+"\picture\%s.png"%file_name


    hDC = win32ui.CreateDC ()
    hDC.CreatePrinterDC (printer_name)
    printable_area = hDC.GetDeviceCaps (HORZRES), hDC.GetDeviceCaps (VERTRES)
    printer_size = hDC.GetDeviceCaps (PHYSICALWIDTH), hDC.GetDeviceCaps (PHYSICALHEIGHT)
    printer_margins = hDC.GetDeviceCaps (PHYSICALOFFSETX), hDC.GetDeviceCaps (PHYSICALOFFSETY)

    bmp = Image.open (file_name)
    if bmp.size[0] > bmp.size[1]:
      bmp = bmp.rotate (0)

    ratios = [1.0 * printable_area[0] / bmp.size[0], 0.9 * printable_area[1] / bmp.size[1]]
    scale = min (ratios)


    hDC.StartDoc (file_name)
    hDC.StartPage ()

    dib = ImageWin.Dib (bmp)
    scaled_width, scaled_height = [int (scale * i) for i in bmp.size]
    x1 = int ((printer_size[0] - scaled_width)/2)
    y1 = int ((printer_size[1] - scaled_height))
    x2 = x1 + scaled_width
    y2 = y1 + scaled_height
    dib.draw (hDC.GetHandleOutput (), (x1, y1, x2, y2))

    hDC.EndPage ()
    hDC.EndDoc ()
    hDC.DeleteDC ()



if __name__ =="__main__":
      
      
      root=Tk() #创建运用程序窗口
      root.resizable(0,0)
      root.title("送料信息打印")
      width = 400
      height = 320
      screenwidth = root.winfo_screenwidth()
      screenheight = root.winfo_screenheight()
      alignstr = '%dx%d+%d+%d' % (width, height, (screenwidth-width)/2, (screenheight-height)/2)
      root.geometry(alignstr)
      one = Label(root, text="Powered by Will  \n"+"2019-"+str(datetime.datetime.now().year), width=30, height=2, font=("Arial", 10))   #软件使用年随本机日期变动
      one.pack(side=BOTTOM)
      
      f1=LabelFrame(root,text="二维码QRcode",height=190,width=190,labelanchor="n")
      f1.pack(anchor="e",padx=10,pady=2)    #使用pack布局

      

      def loadpicture(pic):
          global photo         
          
          photo = PhotoImage(file=pic)  #图片
          for widget in f1.winfo_children():
                 widget.destroy()
          theLabel = Label(f1,
                 
                 justify=LEFT,
                 image=photo,
                 compound=CENTER,
                 
                 fg="white"
                 )
          theLabel.pack()
          root.update()
      

      def printcode():
             machine=comboCNC.get()
             
             cast=comboCAST.get()
             castlot=entry_CASTlot.get()
             mo=entry_MO.get()
             if len(mo)!=9:
                     showwarning('警告', "工单长度为9")
                     os._exit()
             mos=entry_MOS.get()
             pn=entry_PN.get()
             if len(pn)!=8:
                     showwarning('警告', "料号长度为8")
                     os._exit()
      
             text=machine+chr(9)+mo+chr(9)+mos+chr(9)+cast+chr(9)+castlot+chr(9)+chr(9)+pn   #二维码内容二维码中嵌入tab键chr(9),便于后续应用
           
             file=machine+mo+mos+cast+castlot+pn #文件名
             listbox.insert(0,"正在打印:"+file)
            
             print(file)
             pic = os.getcwd()+"\picture\%s.png"%file #文件名
             qrcreate(text,file)      #根据二维码内容生成二维码  
             loadpicture(pic)         #调用图片
             printqrcode(text,file)   #调用打印函数
            

      var_M=["M001","M002","M003","M004"]
      
      var_CAST=["A供应商","B供应商","C供应商"]
      
      var_CASTlot=tkinter.StringVar()
      var_MO=tkinter.StringVar()
      var_MOS=tkinter.StringVar()
      var_PN=tkinter.StringVar()

     
      
      
      comboCNC=tkinter.ttk.Combobox(root,value=tuple(var_M))
      comboCNC.place(x=100,y=10,width=100,height=20)
 
      comboCAST=tkinter.ttk.Combobox(root,value=tuple(var_CAST))
      comboCAST.place(x=100,y=70,width=100,height=20)   
       
      label_CNC=tkinter.Label(root,text="机器CNC：",justify=tkinter.RIGHT)
      label_CNC.place(x=0,y=10,width=100,height=20)
   
      label_CAST=tkinter.Label(root,text="铸件供应商：",justify=tkinter.RIGHT)
      label_CAST.place(x=0,y=70,width=100,height=20)
      label_CASTlot=tkinter.Label(root,text="铸造批次：",justify=tkinter.RIGHT)
      label_CASTlot.place(x=0,y=100,width=100,height=20)
      
      label_MO=tkinter.Label(root,text="工单号：",justify=tkinter.RIGHT)
      label_MO.place(x=0,y=130,width=100,height=20)
      label_MOS=tkinter.Label(root,text="工单号模号：",justify=tkinter.RIGHT)
      label_MOS.place(x=0,y=160,width=100,height=20)
      label_PN=tkinter.Label(root,text="料号:",justify=tkinter.RIGHT)
      label_PN.place(x=0,y=190,width=100,height=20)
      
     
      entry_CASTlot=tkinter.Entry(root,textvariable=var_CASTlot)
      entry_CASTlot.place(x=100,y=100,width=100,height=20)
      entry_MO=tkinter.Entry(root,textvariable=var_MO)
      entry_MO.place(x=100,y=130,width=100,height=20)
      entry_MOS=tkinter.Entry(root,textvariable=var_MOS)
      entry_MOS.place(x=100,y=160,width=100,height=20)
      entry_PN=tkinter.Entry(root,textvariable=var_PN)
      entry_PN.place(x=100,y=190,width=100,height=20)
      
      listbox=Listbox(root)
      listbox.place(x=110,y=230,width=280,height=40)
    
     
      
      buttonDelete=Button(root,text="打印",command=printcode)  #按下打印按钮启动打印函数"printcode"
      buttonDelete.place(x=0,y=230,width=100,height=20)
        
      
      root.mainloop()

图片效果

图片: