Updated

app.py

@@ -1,6 +1,6 @@
 import tkinter as tk
-from tkinter import simpledialog, messagebox
-from PIL import Image, ImageTk
+from tkinter import simpledialog, messagebox, ttk
+from PIL import Image, ImageTk, ImageDraw, ImageFont
 import barcode
 from barcode.writer import ImageWriter
 import cups
@@ -11,31 +11,69 @@ def get_printers():
     return list(conn.getPrinters().keys())
 
 def print_label(printer_name, text):
-    # Generate barcode image
+    # Generate barcode image without text
     CODE128 = barcode.get_barcode_class('code128')
     code = CODE128(text, writer=ImageWriter())
-    filename = code.save('label_barcode')
+    filename = code.save('label_barcode', options={"write_text": False})
     
-    # Create label image with text and barcode
-    barcode_img = Image.open(filename + '.png')
-    label_img = Image.new('RGB', (barcode_img.width, barcode_img.height + 40), 'white')
+    # Load barcode image
+    barcode_img = Image.open(filename)
+    # Set font path (adjust if needed)
+    try:
+        font = ImageFont.truetype("arialbd.ttf", 32)  # Arial Black, 24pt
+    except IOError:
+        font = ImageFont.load_default()
+    # Calculate text size
+    draw = ImageDraw.Draw(barcode_img)
+    text_width, text_height = draw.textbbox((0, 0), text, font=font)[2:]
+    # Create label image with extra space for text
+    label_height = barcode_img.height + text_height + 10
+    label_img = Image.new('RGB', (barcode_img.width, label_height), 'white')
     label_img.paste(barcode_img, (0, 0))
-    
-    # Add text below barcode
-    from PIL import ImageDraw, ImageFont
+    # Draw text centered under barcode
     draw = ImageDraw.Draw(label_img)
-    font = ImageFont.load_default()
-    w, h = draw.textsize(text, font=font)
-    draw.text(((barcode_img.width - w) // 2, barcode_img.height + 10), text, fill='black', font=font)
-    
+    x = (barcode_img.width - text_width) // 2
+    y = barcode_img.height + 5
+    draw.text((x, y), text, font=font, fill='black')
     label_img.save('final_label.png')
     
     # Print using CUPS
     conn = cups.Connection()
     conn.printFile(printer_name, 'final_label.png', "Label Print", {})
-    os.remove(filename + '.png')
+    os.remove(filename)
     os.remove('final_label.png')
 
+def show_preview(image_path):
+    preview = tk.Toplevel()
+    preview.title("Label Preview")
+    img = Image.open(image_path)
+    img_tk = ImageTk.PhotoImage(img)
+    label = tk.Label(preview, image=img_tk)
+    label.image = img_tk  # Keep reference
+    label.pack()
+    btn = tk.Button(preview, text="Print", command=preview.destroy)
+    btn.pack()
+    preview.grab_set()
+    preview.wait_window()
+
+def select_printer(printers):
+    dialog = tk.Toplevel()
+    dialog.title("Select Printer")
+    tk.Label(dialog, text="Select a printer:").pack(padx=10, pady=5)
+    printer_var = tk.StringVar()
+    combo = ttk.Combobox(dialog, textvariable=printer_var, values=printers, state="readonly")
+    combo.pack(padx=10, pady=5)
+    combo.current(0)
+    selected = {'printer': None}
+    def on_ok():
+        selected['printer'] = printer_var.get()
+        dialog.destroy()
+    btn = tk.Button(dialog, text="OK", command=on_ok)
+    btn.pack(pady=10)
+    dialog.grab_set()
+    dialog.wait_window()
+    return selected['printer']
+
 def main():
     root = tk.Tk()
     root.withdraw()
@@ -45,18 +83,48 @@ def main():
         messagebox.showerror("Error", "No printers found.")
         return
     
-    printer = simpledialog.askstring("Printer", f"Available printers:\n{printers}\nEnter printer name:")
-    if printer not in printers:
-        messagebox.showerror("Error", "Invalid printer selected.")
+    printer = select_printer(printers)
+    if not printer:
+        messagebox.showerror("Error", "No printer selected.")
         return
     
     text = simpledialog.askstring("Label Text", "Enter text for the label:")
     if not text:
         messagebox.showerror("Error", "No text entered.")
         return
-    
+
+    # Generate label image for preview
+    CODE128 = barcode.get_barcode_class('code128')
+    code = CODE128(text, writer=ImageWriter())
+    filename = code.save('label_barcode', options={"write_text": False})
+    barcode_img = Image.open(filename)
+    # Set font path (adjust if needed)
+    try:
+        font = ImageFont.truetype("arialbd.ttf", 32)  # Arial Black, 24pt
+    except IOError:
+        font = ImageFont.load_default()
+    # Calculate text size
+    draw = ImageDraw.Draw(barcode_img)
+    text_width, text_height = draw.textbbox((0, 0), text, font=font)[2:]
+    # Create label image with extra space for text
+    label_height = barcode_img.height + text_height + 10
+    label_img = Image.new('RGB', (barcode_img.width, label_height), 'white')
+    label_img.paste(barcode_img, (0, 0))
+    # Draw text centered under barcode
+    draw = ImageDraw.Draw(label_img)
+    x = (barcode_img.width - text_width) // 2
+    y = barcode_img.height + 5
+    draw.text((x, y), text, font=font, fill='black')
+    label_img.save('final_label.png')
+    os.remove(filename)
+
+    # Show preview window
+    show_preview('final_label.png')
+
+    # Print after preview
     print_label(printer, text)
     messagebox.showinfo("Done", "Label sent to printer.")
+    os.remove('final_label.png')
 
 if __name__ == "__main__":
     main()