88 lines
3.2 KiB
Python
88 lines
3.2 KiB
Python
#!/bin/python
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#coding: utf-8
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# +-------------------------------------------------------------------
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# | version:1.0
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# +-------------------------------------------------------------------
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# | django-vue-lyadmin 专业版
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# +-------------------------------------------------------------------
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# | Author: lybbn
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# +-------------------------------------------------------------------
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# | QQ: 1042594286
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# +-------------------------------------------------------------------
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# ------------------------------
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# 条形码唛头生成--filters过滤
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# ------------------------------
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"""
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@Remark: 生成条形码并转换为图片
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ean13 只支持数字
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code128 支持字符串
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"""
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import barcode
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import base64
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from barcode.writer import ImageWriter
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import os
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from django.conf import settings
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import time
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from PIL import Image, ImageDraw,ImageFont
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from config import DOMAIN_HOST
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from io import BytesIO
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BARCODE_TYPE = 'code128'
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CUSTOM_OPTIONS = {
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"module_width": 0.2, # 单个条纹的最小宽度, mm
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"module_height": 15.0, # 条纹带的高度, mm
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"quiet_zone": 0, # 图片两边与首尾两条纹之间的距离, mm
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"font_size": 7, # 条纹底部文本的大小,pt
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"text_distance": 4.0, # 条纹底部与条纹之间的距离, mm
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# "background": "rgba(0,0,0,0)", # 背景颜色，默认为白色white，设置为transparent需要ImageWriter的mode="RGBA"
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}
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def barCodeGenerate(content,imgpath=""):
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"""
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生成条形码唛头，返回base64内容
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content:条形码内容
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"""
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if not imgpath:
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imgpath = os.path.join(settings.MEDIA_ROOT, 'temp')
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if not os.path.exists(imgpath):
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os.makedirs(imgpath)
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filename = str(int(time.time()*100000))
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code = barcode.get_barcode_class(BARCODE_TYPE)
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# code_img = code(content, writer=ImageWriter(mode="RGBA"))#透明背景
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code_img = code(content, writer=ImageWriter()) # 透明背景
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# 暂存条形码并记录完整路径
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file_save_name = code_img.save(imgpath+os.path.sep+filename, options=CUSTOM_OPTIONS)
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# 合成唛头
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bg = Image.open(os.path.join(settings.MEDIA_ROOT, 'maitou.jpg'))
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x, y = bg.size
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bc = Image.open(file_save_name)
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# x2, y2 = bc.size
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# bc = bc.resize((int(x2*0.85), int(y2*0.85)))
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x1, y1 = bc.size
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bg.paste(bc, (int(x/2)-int(x1/2), int(y/2)-int(y1/2)+60))
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draw = ImageDraw.Draw(bg)
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thefontpath = os.path.join(settings.MEDIA_ROOT, 'SourceHanSansCN-Medium.otf')
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fontstyle = ImageFont.truetype(thefontpath,50, encoding="utf-8")
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draw.text((int(x/2)-int(x1/2)-42, int(y/2)-int(y1/2)-10), text=content,font=fontstyle, fill='black')
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#返回http路径
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# fullfilepath = imgpath + os.path.sep + filename + ".png"
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# bg.save(fullfilepath)
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# web_img_url = DOMAIN_HOST + settings.MEDIA_URL + "/temp/" + filename + ".png" # 绝对路径http://xxx.xxx.com/media/xxx/xxxx/xxx.png
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# return web_img_url
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#返回base64
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output_buffer = BytesIO()
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bg.save(output_buffer,quality=100, format="PNG")
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byte_data = output_buffer.getvalue()
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base64_str = 'data:image/png;base64,' + base64.b64encode(byte_data).decode("utf-8")
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#移除暂存条形码文件
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exist_file = os.path.exists(file_save_name)
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if exist_file:
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os.remove(file_save_name)
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return base64_str
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