制作二维码图片
制作二维码图片
# coding:utf-8
import qrcode
from PIL import Image
from django.conf import settings
from common import constant
from common.utils.utils_file import FileOperateUtil
from common.utils.utils_qraphics import GraphicsUtil
class QRCodeUtil(object):
@staticmethod
def create_qrcode(url, local_folder, local_file_name, qr_width=1280, qr_height=1280):
"""
生成二维码
:param url: 二维码对应链接地址
:param local_folder: 二维码存放目录
:param local_file_name: 二维码文件名
:param qr_width: 宽度
:param qr_height: 高度
:return:
"""
qr = qrcode.QRCode(
version=1,
# 设置容错率为最高
error_correction=qrcode.ERROR_CORRECT_H,
box_size=10,
border=4,
)
qr.add_data(url)
qr.make(fit=True)
img = qr.make_image()
# 设置二维码为彩色
img = img.convert("RGBA")
icon = Image.open(constant.APP_WEB_LOGO)
w, h = img.size
factor = 4
size_w = int(w / factor)
size_h = int(h / factor)
icon_w, icon_h = icon.size
if icon_w > size_w:
icon_w = size_w
if icon_h > size_h:
icon_h = size_h
icon = icon.resize((icon_w, icon_h), Image.ANTIALIAS)
w = int((w - icon_w) / 2)
h = int((h - icon_h) / 2)
icon = icon.convert("RGBA")
newimg = Image.new("RGBA", (icon_w + 8, icon_h + 8), (255, 255, 255))
img.paste(newimg, (w - 4, h - 4), newimg)
img.paste(icon, (w, h), icon)
real_file_folder = "%s/%s" % (settings.MEDIA_ROOT, local_folder)
FileOperateUtil.validate_folder_exists(real_file_folder, is_create=True)
real_file_path = "%s/%s" % (real_file_folder, local_file_name)
img.save(real_file_path, quality=100)
# 将图片放大到1280x1280
GraphicsUtil.fixed_size(real_file_path, real_file_path, qr_width, qr_height)
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