68 lines
1.8 KiB
Python
68 lines
1.8 KiB
Python
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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This module can generate Code-39 barcodes
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(C) 2022 Louis Heredero louis.heredero@edu.vs.ch
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"""
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import pygame
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code39_dict = {
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"A": "100001001", "B": "001001001",
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"C": "101001000", "D": "000011001",
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"E": "100011000", "F": "001011000",
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"G": "000001101", "H": "100001100",
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"I": "001001100", "J": "000011100",
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"K": "100000011", "L": "001000011",
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"M": "101000010", "N": "000010011",
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"O": "100010010", "P": "001010010",
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"Q": "000000111", "R": "100000110",
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"S": "001000110", "T": "000010110",
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"U": "110000001", "V": "011000001",
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"W": "111000000", "X": "010010001",
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"Y": "110010000", "Z": "011010000",
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"0": "000110100", "1": "100100001",
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"2": "001100001", "3": "101100000",
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"4": "000110001", "5": "100110000",
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"6": "001110000", "7": "000100101",
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"8": "100100100", "9": "001100100",
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" ": "011000100", "-": "010000101",
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"$": "010101000", "%": "000101010",
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".": "110000100", "/": "010100010",
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"+": "010001010", "*": "010010100"
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}
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def code39(text):
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text = text.upper()
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text = map(lambda c: code39_dict[c], text)
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return "0".join(text)
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def draw_barcode(barcode, win):
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barcode = list(map(int, barcode))
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width = win.get_width()*0.8
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height = win.get_height()*0.5
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thicks = sum(barcode)
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thins = len(barcode)-thicks
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bar_w = width/(thicks*2+thins)
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win.fill((255,255,255))
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x = win.get_width()*0.1
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y = win.get_height()*0.25
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for i, c in enumerate(barcode):
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w = 2*bar_w if c else bar_w
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if i%2 == 0:
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pygame.draw.rect(win, (0,0,0), [x, y, w, height])
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x += w
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if __name__ == "__main__":
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import base
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b = base.Base(800, 500, "Code-39 barcode generator")
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barcode = code39("*CODE-39*")
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draw_barcode(barcode, b.w)
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b.main()
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