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barcode_generator.py
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97 lines (59 loc) · 2.57 KB
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import tkinter as tk
from tkinter import messagebox
from PIL import Image, ImageTk
import barcode
from barcode.writer import ImageWriter
class BarcodeGeneratorApp:
def __init__(self, root):
self.root = root
self.root.title("条形码生成器")
# 输入标签和文本框
self.label = tk.Label(root, text="请输入条形码数据(数字):")
self.label.pack(pady=10)
self.entry = tk.Entry(root, width=40)
self.entry.pack(pady=5)
# 生成按钮
self.generate_button = tk.Button(root, text="生成条形码", command=self.generate_barcode)
self.generate_button.pack(pady=10)
# 用于显示条形码的标签
self.barcode_label = tk.Label(root)
self.barcode_label.pack(pady=10)
# 初始化条形码图像为None
self.barcode_image = None
def generate_barcode(self):
# 从输入框获取数据
data = self.entry.get()
# 检查数据是否为空
if not data:
messagebox.showerror("错误", "请输入条形码数据!")
return
# 尝试生成条形码
try:
# 这里我们使用ean13作为示例,但你可以根据需要更改
EAN = barcode.get_barcode_class('ean13')
ean = EAN(data, writer=ImageWriter())
# 保存条形码到内存中的字节流
from io import BytesIO
buffer = BytesIO()
ean.save(buffer, format='PNG')
buffer.seek(0)
# 将字节流转换为PIL图像
self.barcode_image = Image.open(buffer)
# 将PIL图像转换为Tkinter图像
tk_image = ImageTk.PhotoImage(self.barcode_image)
# 更新条形码标签以显示新图像
self.barcode_label.config(image=tk_image)
self.barcode_label.image = tk_image # 保持对图像的引用
# 可选:提供保存条形码的选项
# save_path = filedialog.asksaveasfilename(defaultextension=".png", filetypes=[("PNG files", "*.png")])
# if save_path:
# self.barcode_image.save(save_path)
# messagebox.showinfo("成功", f"条形码已保存到 {save_path}")
except barcode.writer.WriterException as e:
messagebox.showerror("条形码生成失败", f"错误: {e}")
except Exception as e:
messagebox.showerror("错误", f"发生未知错误: {e}")
if __name__ == "__main__":
root = tk.Tk()
app = BarcodeGeneratorApp(root)
root.mainloop()