【发布时间】:2021-04-04 20:55:57
【问题描述】:
我刚刚构建了一个生成条形码的快速 Python Azure 函数。响应仅为 .png 格式的呈现条形码。我还需要在其下方显示条形码 VALUE。
示例:
import logging
import azure.functions as func
import code128
import io
from PIL import Image
barcode_param = '1234'
barcode_bytes = io.BytesIO()
logging.info('##### Generating barcode... #####')
barcode = code128.image(barcode_param, height=100).save(barcode_bytes, "PNG")
barcode_bytes.seek(0)
logging.info('##### Barcode successfully generated #####')
return func.HttpResponse(
barcode_bytes.getvalue(),
status_code=200,
mimetype='image/png'
)
barcode_bytes.close()
如何使用code128 库将条形码值添加到条形码中?
in the docs 没有显示任何选项。
编辑 1:在@Furas 很好的例子之后,我现在有:
要生成的代码:
import code128
import io
from PIL import Image, ImageDraw, ImageFont
# Get barcode value
barcode_param = 'SUFFERINSUCCOTASH'
# Create barcode image
barcode_image = code128.image(barcode_param, height=100)
# Create empty image for barcode + text
top_bott_margin = 70
l_r_margin = 10
new_height = barcode_image.height + (2 * top_bott_margin)
new_width = barcode_image.width + (2 * l_r_margin)
new_image = Image.new( 'RGB', (new_width, new_height), (255, 255, 255))
# put barcode on new image
barcode_y = 100
new_image.paste(barcode_image, (0, barcode_y))
# object to draw text
draw = ImageDraw.Draw(new_image)
# Define custom text size and font
h1_size = 28
h2_size = 28
h3_size = 16
footer_size = 21
h1_font = ImageFont.truetype("DejaVuSans-Bold.ttf", h1_size)
h2_font = ImageFont.truetype("Ubuntu-Th.ttf", h2_size)
h3_font = ImageFont.truetype("Ubuntu-Th.ttf", h3_size)
footer_font = ImageFont.truetype("UbuntuMono-R.ttf", footer_size)
# Define custom text
company_name = 'YAY! CORP.'
id1 = '11-22-33-44'
license_num = 'WHY SOYNTENLY!'
product_type = 'GRADE A GREATNESS'
center_product_type = (barcode_image.width / 2) - len(product_type) * 5
center_barcode_value = (barcode_image.width / 2) - len(barcode_param) * 8
# Draw text on picture
draw.text( (l_r_margin, 0), company_name, fill=(0, 0, 0), font=h1_font)
draw.text( (l_r_margin, h1_size), id1, fill=(0, 0, 0), font=h2_font)
draw.text( (l_r_margin + 2, (h1_size + h2_size + 5)), license_num, fill=(0, 0, 0), font=h3_font)
draw.text( (center_product_type, (h1_size + h2_size + h3_size)), product_type, fill=(0, 0, 0), font=footer_font)
draw.text( (center_barcode_value, (new_height - footer_size - 15)), barcode_param, fill=(0, 0, 0), font=h2_font)
# save in file
new_image.save('barcode_image.png', 'PNG')
# show in default viewer
import webbrowser
webbrowser.open('barcode_image.png')
谢谢老哥!
【问题讨论】:
-
也许你找不到它的选项,因为它不存在。可以独立打印文字吗?
-
您必须生成条形码数据的图像并将其附加到条形码图形图像的下方。它可能不是 code128 库中的函数。需要更多研究。