569 lines
21 KiB
Python
569 lines
21 KiB
Python
from PIL import Image, ImageDraw, ImageFont
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import barcode
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from barcode.writer import ImageWriter
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import time
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import os
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import sys
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import datetime
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import platform
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import subprocess
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from print_label_pdf import PDFLabelGenerator
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# Cross-platform printer support
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try:
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import cups
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CUPS_AVAILABLE = True
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except ImportError:
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CUPS_AVAILABLE = False
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try:
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import win32api
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import win32print
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WIN32_AVAILABLE = True
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except ImportError:
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WIN32_AVAILABLE = False
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SYSTEM = platform.system() # 'Linux', 'Windows', 'Darwin'
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def get_available_printers():
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"""
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Get list of available printers (cross-platform).
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Includes both local and network printers on Windows.
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Returns:
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list: List of available printer names, with "PDF" as fallback
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"""
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try:
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if SYSTEM == "Linux" and CUPS_AVAILABLE:
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# Linux: Use CUPS
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conn = cups.Connection()
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printers = conn.getPrinters()
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return list(printers.keys()) if printers else ["PDF"]
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elif SYSTEM == "Windows":
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# Windows: Get local + connected printers (includes print server connections)
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try:
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printers = []
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# PRINTER_ENUM_LOCAL | PRINTER_ENUM_CONNECTIONS captures:
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# - Locally installed printers
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# - Printers connected from a print server (e.g. \\server\printer)
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try:
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flags = win32print.PRINTER_ENUM_LOCAL | win32print.PRINTER_ENUM_CONNECTIONS
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for printer_info in win32print.EnumPrinters(flags):
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printer_name = printer_info[2]
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if printer_name and printer_name not in printers:
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printers.append(printer_name)
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except Exception as e:
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print(f"Error enumerating printers: {e}")
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# Add PDF as fallback option
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if "PDF" not in printers:
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printers.append("PDF")
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return printers if printers else ["PDF"]
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except Exception as e:
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print(f"Error getting Windows printers: {e}")
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return ["PDF"]
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elif SYSTEM == "Darwin":
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# macOS: Use lpstat command
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try:
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result = subprocess.run(["lpstat", "-p", "-d"],
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capture_output=True, text=True)
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printers = []
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for line in result.stdout.split('\n'):
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if line.startswith('printer'):
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printer_name = line.split()[1]
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printers.append(printer_name)
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return printers if printers else ["PDF"]
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except:
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return ["PDF"]
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else:
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return ["PDF"]
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except Exception as e:
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print(f"Error getting printers: {e}")
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return ["PDF"]
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def create_label_image(text):
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"""
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Create a label image with 3 rows: label + barcode for each field.
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Args:
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text (str): Combined text in format "SAP|CANTITATE|LOT" or single value
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Returns:
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PIL.Image: The generated label image
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"""
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# Parse the text input
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parts = text.split('|') if '|' in text else [text, '', '']
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sap_nr = parts[0].strip() if len(parts) > 0 else ''
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cantitate = parts[1].strip() if len(parts) > 1 else ''
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lot_number = parts[2].strip() if len(parts) > 2 else ''
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# Label dimensions (narrower, 3 rows)
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label_width = 800 # 8 cm
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label_height = 600 # 6 cm
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# Create canvas
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label_img = Image.new('RGB', (label_width, label_height), 'white')
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draw = ImageDraw.Draw(label_img)
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# Row setup - 3 equal rows
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row_height = label_height // 3
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left_margin = 15
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row_spacing = 3
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# Fonts
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font_path = "/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf"
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try:
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label_font = ImageFont.truetype(font_path, 16)
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value_font = ImageFont.truetype(font_path, 14)
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except IOError:
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label_font = ImageFont.load_default()
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value_font = ImageFont.load_default()
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# Data for 3 rows
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rows_data = [
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("SAP-Nr", sap_nr),
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("Cantitate", cantitate),
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("Lot Nr", lot_number),
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]
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# Generate barcodes first
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CODE128 = barcode.get_barcode_class('code128')
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writer_options = {
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"write_text": False,
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"module_width": 0.4,
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"module_height": 8,
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"quiet_zone": 2,
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"font_size": 0
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}
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barcode_images = []
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for _, value in rows_data:
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if value:
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try:
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code = CODE128(value[:25], writer=ImageWriter())
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filename = code.save('temp_barcode', options=writer_options)
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barcode_img = Image.open(filename)
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barcode_images.append(barcode_img)
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except:
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barcode_images.append(None)
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else:
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barcode_images.append(None)
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# Draw each row with label and barcode
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for idx, ((label_name, value), barcode_img) in enumerate(zip(rows_data, barcode_images)):
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row_y = idx * row_height
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# Draw label name
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draw.text(
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(left_margin, row_y + 3),
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label_name,
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fill='black',
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font=label_font
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)
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# Draw barcode if available
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if barcode_img:
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# Resize barcode to fit in row width
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barcode_width = label_width - left_margin - 10
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barcode_height = row_height - 25
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# Use high-quality resampling for crisp barcodes
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try:
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# Try newer Pillow API first
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from PIL.Image import Resampling
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barcode_resized = barcode_img.resize((barcode_width, barcode_height), Resampling.LANCZOS)
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except (ImportError, AttributeError):
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# Fallback for older Pillow versions
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barcode_resized = barcode_img.resize((barcode_width, barcode_height), Image.LANCZOS)
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label_img.paste(barcode_resized, (left_margin, row_y + 20))
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else:
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# Fallback: show value as text
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draw.text(
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(left_margin, row_y + 25),
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value if value else "(empty)",
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fill='black',
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font=value_font
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)
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# Clean up temporary barcode files
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try:
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if os.path.exists('temp_barcode.png'):
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os.remove('temp_barcode.png')
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except:
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pass
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return label_img
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def create_label_pdf(text, svg_template=None):
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"""
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Create a high-quality PDF label with 3 rows: label + barcode for each field.
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PDFs are saved to the pdf_backup folder.
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Args:
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text (str): Combined text in format "article;nr_art;serial;status" or single value
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status: 1 = OK label, 0 = NOK label
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svg_template (str): Path to specific SVG template to use (optional)
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Returns:
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str: Path to the generated PDF file
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"""
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# Parse the text input - using semicolon separator
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parts = text.split(';') if ';' in text else [text, '', '']
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article = parts[0].strip() if len(parts) > 0 else ''
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nr_art = parts[1].strip() if len(parts) > 1 else ''
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serial = parts[2].strip() if len(parts) > 2 else ''
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status_flag = parts[3].strip() if len(parts) > 3 else '1'
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# Create PDF using high-quality generator
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generator = PDFLabelGenerator()
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# Ensure pdf_backup folder exists
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pdf_backup_dir = 'pdf_backup'
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os.makedirs(pdf_backup_dir, exist_ok=True)
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timestamp = datetime.datetime.now().strftime("%Y%m%d_%H%M%S")
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pdf_filename = os.path.join(pdf_backup_dir, f"final_label_{timestamp}.pdf")
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# Select template/image based on status flag
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# 1 = OK label, 0 = NOK label
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selected_template = svg_template if svg_template and os.path.exists(svg_template) else None
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default_svg = os.path.join('conf', 'label_template.svg')
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ok_svg = os.path.join('conf', 'label_template_ok.svg')
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nok_svg = os.path.join('conf', 'label_template_nok.svg')
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if selected_template:
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image_path = os.path.join('conf', 'accepted.png') if status_flag != '0' else os.path.join('conf', 'refused.png')
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elif status_flag == '0':
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# NOK label: prefer dedicated NOK SVG template, otherwise use refused image in standard layout
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if os.path.exists(nok_svg):
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selected_template = nok_svg
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elif os.path.exists(default_svg):
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selected_template = default_svg
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image_path = os.path.join('conf', 'refused.png')
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else:
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# OK label (default): prefer dedicated OK SVG template, fallback to default SVG template
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if os.path.exists(ok_svg):
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selected_template = ok_svg
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elif os.path.exists(default_svg):
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selected_template = default_svg
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image_path = os.path.join('conf', 'accepted.png')
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return generator.create_label_pdf(article, nr_art, serial, pdf_filename, image_path, selected_template)
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def configure_printer_quality(printer_name, width_mm=35, height_mm=25):
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"""
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Configure printer for high quality label printing (Windows only).
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Sets paper size, orientation, and QUALITY settings.
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Args:
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printer_name (str): Name of the printer
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width_mm (int): Label width in millimeters (default 35)
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height_mm (int): Label height in millimeters (default 25)
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Returns:
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bool: True if successful
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"""
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if SYSTEM != "Windows" or not WIN32_AVAILABLE:
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return False
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try:
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import win32print
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import pywintypes
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hprinter = win32print.OpenPrinter(printer_name)
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try:
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# Get current printer properties
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props = win32print.GetPrinter(hprinter, 2)
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devmode = props.get("pDevMode")
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if devmode is None:
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print("Could not get printer DEVMODE")
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return False
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# CRITICAL: Set print quality to HIGHEST
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# This prevents dotted/pixelated text
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try:
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devmode.PrintQuality = 600 # 600 DPI (high quality)
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except:
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try:
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devmode.PrintQuality = 4 # DMRES_HIGH
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except:
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pass
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# Set custom paper size
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try:
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devmode.PaperSize = 256 # DMPAPER_USER (custom size)
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devmode.PaperLength = height_mm * 10 # Height in 0.1mm units
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devmode.PaperWidth = width_mm * 10 # Width in 0.1mm units
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except:
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pass
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# Set orientation to landscape
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try:
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devmode.Orientation = 2 # Landscape
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except:
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pass
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# Set additional quality settings
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try:
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devmode.Color = 1 # Monochrome for labels
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except:
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pass
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try:
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devmode.TTOption = 2 # DMTT_BITMAP - print TrueType as graphics (sharper)
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except:
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pass
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# Apply settings
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try:
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props["pDevMode"] = devmode
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win32print.SetPrinter(hprinter, 2, props, 0)
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print(f"Printer configured: {width_mm}x{height_mm}mm @ HIGH QUALITY")
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return True
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except Exception as set_err:
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print(f"Could not apply printer settings: {set_err}")
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return False
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finally:
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win32print.ClosePrinter(hprinter)
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except Exception as e:
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print(f"Could not configure printer quality: {e}")
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return False
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def print_to_printer(printer_name, file_path):
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"""
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Print file to printer (cross-platform).
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Uses SumatraPDF for silent printing on Windows.
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Args:
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printer_name (str): Name of printer or "PDF" for PDF output
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file_path (str): Path to file to print
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Returns:
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bool: True if successful
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"""
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try:
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if printer_name == "PDF":
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# PDF output - file is already saved
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print(f"PDF output: {file_path}")
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return True
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elif SYSTEM == "Linux" and CUPS_AVAILABLE:
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# Linux: Use CUPS
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conn = cups.Connection()
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conn.printFile(printer_name, file_path, "Label Print", {})
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print(f"Label sent to printer: {printer_name}")
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return True
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elif SYSTEM == "Windows":
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# Windows: Print PDF silently without any viewer opening
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try:
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if WIN32_AVAILABLE:
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import win32print
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import win32api
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if file_path.endswith('.pdf'):
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# Try silent printing methods (no viewer opens)
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import os
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import winreg
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printed = False
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# Method 1: SumatraPDF (bundled inside exe or external)
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sumatra_paths = []
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# Get the directory where this script/exe is running
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if getattr(sys, 'frozen', False):
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# Running as compiled executable
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# PyInstaller extracts bundled files to sys._MEIPASS temp folder
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if hasattr(sys, '_MEIPASS'):
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# Check bundled version first (inside the exe)
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bundled_sumatra = os.path.join(sys._MEIPASS, 'SumatraPDF.exe')
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sumatra_paths.append(bundled_sumatra)
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# Also check app directory for external version
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app_dir = os.path.dirname(sys.executable)
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sumatra_paths.append(os.path.join(app_dir, "SumatraPDF", "SumatraPDF.exe"))
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sumatra_paths.append(os.path.join(app_dir, "SumatraPDF.exe"))
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else:
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# Running as script - check local folders
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app_dir = os.path.dirname(os.path.abspath(__file__))
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sumatra_paths.append(os.path.join(app_dir, "SumatraPDF", "SumatraPDF.exe"))
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sumatra_paths.append(os.path.join(app_dir, "SumatraPDF.exe"))
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sumatra_paths.append(os.path.join(app_dir, "conf", "SumatraPDF.exe"))
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# Then check system installations
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sumatra_paths.extend([
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r"C:\Program Files\SumatraPDF\SumatraPDF.exe",
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r"C:\Program Files (x86)\SumatraPDF\SumatraPDF.exe",
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])
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for sumatra_path in sumatra_paths:
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if os.path.exists(sumatra_path):
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try:
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# Use noscale with paper size specification for thermal printers
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# Format: "noscale,paper=<size>" where paper size matches PDF (35mm x 25mm)
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# SumatraPDF will use the PDF's page size when noscale is used
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subprocess.run([
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sumatra_path,
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"-print-to",
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printer_name,
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file_path,
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"-print-settings",
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"noscale", # Preserve exact PDF page dimensions
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"-silent",
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"-exit-when-done"
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], check=False, creationflags=subprocess.CREATE_NO_WINDOW)
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print(f"Label sent to printer via SumatraPDF: {printer_name}")
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print(f"Note: Printer '{printer_name}' should be configured for 35mm x 25mm labels")
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printed = True
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break
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except Exception as e:
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print(f"SumatraPDF error: {e}")
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# Do not launch default PDF viewers (Adobe/Edge/etc.) as fallback.
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if not printed:
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print("SumatraPDF not found or failed. PDF saved as backup only (no viewer launched).")
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return False
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return True
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else:
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# Non-PDF files
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subprocess.run(['notepad', '/p', file_path],
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check=False,
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creationflags=subprocess.CREATE_NO_WINDOW)
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print(f"Label sent to printer: {printer_name}")
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return True
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except Exception as e:
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print(f"Windows print error: {e}")
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print("PDF backup saved as fallback")
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return True
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|
|
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elif SYSTEM == "Darwin":
|
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# macOS: Use lp command
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subprocess.run(["lp", "-d", printer_name, file_path], check=True)
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print(f"Label sent to printer: {printer_name}")
|
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return True
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|
|
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else:
|
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print(f"Unsupported system: {SYSTEM}")
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return False
|
|
|
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except Exception as e:
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print(f"Printer error: {str(e)}")
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print("Label already saved to file as fallback...")
|
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print(f"Label file: {file_path}")
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return True
|
|
|
|
|
|
def print_label_standalone(value, printer, preview=0, use_pdf=True, svg_template=None):
|
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"""
|
|
Print a label with the specified text on the specified printer.
|
|
Always generates a PDF backup in pdf_backup and prints that PDF.
|
|
|
|
Args:
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value (str): The text to print on the label
|
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printer (str): The name of the printer to use
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preview (int): 0 = no preview, 1-3 = 3s preview, >3 = 5s preview
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use_pdf (bool): False to also generate a PNG if PDF generation fails
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svg_template (str): Path to specific SVG template to use (optional)
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Returns:
|
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bool: True if printing was successful, False otherwise
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"""
|
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# Track generated files
|
|
file_created = False
|
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temp_file = None
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pdf_file = None
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|
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try:
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# Debug output
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|
print(f"Preview value: {preview}")
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print(f"Preview type: {type(preview)}")
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print(f"Using format: {'PDF' if use_pdf else 'PNG'}")
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|
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# Always generate a PDF backup and print that PDF for verification
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try:
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pdf_file = create_label_pdf(value, svg_template)
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if pdf_file and os.path.exists(pdf_file):
|
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print(f"PDF label created: {pdf_file}")
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print(f"PDF backup saved to: {pdf_file}")
|
|
else:
|
|
print("PDF generation returned no file path")
|
|
except Exception as pdf_err:
|
|
print(f"PDF generation failed: {pdf_err}")
|
|
|
|
# Optionally also create the label image (PNG)
|
|
if not pdf_file or not os.path.exists(pdf_file):
|
|
if not use_pdf:
|
|
label_img = create_label_image(value)
|
|
temp_file = 'final_label.png'
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label_img.save(temp_file)
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|
print(f"PNG label created: {temp_file}")
|
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else:
|
|
temp_file = pdf_file
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|
|
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file_created = True
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|
|
|
if not temp_file or not os.path.exists(temp_file):
|
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print("No label file created for printing")
|
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return False
|
|
|
|
# Convert preview to int if it's a string
|
|
if isinstance(preview, str):
|
|
preview = int(preview)
|
|
|
|
if preview > 0: # Any value above 0 shows a preview message
|
|
# Calculate preview duration in seconds
|
|
if 1 <= preview <= 3:
|
|
preview_sec = 3 # 3 seconds
|
|
else: # preview > 3
|
|
preview_sec = 5 # 5 seconds
|
|
|
|
print(f"Printing in {preview_sec} seconds... (Press Ctrl+C to cancel)")
|
|
|
|
# Simple countdown timer using time.sleep
|
|
try:
|
|
for i in range(preview_sec, 0, -1):
|
|
print(f" {i}...", end=" ", flush=True)
|
|
time.sleep(1)
|
|
print("\nPrinting now...")
|
|
except KeyboardInterrupt:
|
|
print("\nCancelled by user")
|
|
return False
|
|
|
|
# Print after preview
|
|
print("Sending to printer...")
|
|
return print_to_printer(printer, temp_file)
|
|
else:
|
|
print("Direct printing without preview...")
|
|
# Direct printing without preview (preview = 0)
|
|
return print_to_printer(printer, temp_file)
|
|
|
|
except Exception as e:
|
|
print(f"Error printing label: {str(e)}")
|
|
return False
|
|
|
|
finally:
|
|
# This block always executes, ensuring cleanup
|
|
if pdf_file and os.path.exists(pdf_file):
|
|
print("Cleanup complete - PDF backup saved to pdf_backup folder")
|
|
else:
|
|
print("Cleanup complete - label file retained for reference")
|
|
|
|
|
|
# Main code removed - import this module or run as part of the Kivy GUI application
|