# -*- coding: utf-8 -*- 
# @Author : 王翔 
# @WeChat : King_Uranus 
# @公众号 : 清风Python 
# @Date  : 2019/9/23 23:08 
# @Software : PyCharm 
# @version ：Python 3.7.3 
# @File  : NationalFlag.py 
import os 
import argparse 
from PIL import Image 
BasePath = os.path.dirname(os.path.realpath(__file__)) 
class NationalFlag: 
 def __init__(self): 
  self.border = 30 
  self.user_picture_size=None 
  self.picture, self.picture_size = self.sharpe_image(args.picture.replace('\\', '/'), 'user_picture') 
  self.icon, self.icon_size = self.sharpe_image(os.path.join(BasePath, 'icon.png')) 
 def sharpe_image(self, picture_path, img_type=None): 
  image = Image.open(picture_path).convert("RGBA") 
  size = min(image.size) 
  if not img_type: 
   size = 240 
  image = image.resize((size, size), Image.ANTIALIAS) 
  reset_picture = self.blank_image(size, img_type) 
  if not img_type: 
   pimage = image.load() # 像素的访问对象 
   preset_picture = reset_picture.load() 
   r = float(size / 2) # 圆心横坐标 
   r3 = int(size // 2) 
   for i in range(size): 
    for j in range(size): 
     lx = abs(i - r) # 到圆心距离的横坐标 
     ly = abs(j - r) # 到圆心距离的纵坐标 
     l = (pow(lx, 2) + pow(ly, 2)) ** 0.5 # 三角函数 半径 
     if l < r3: 
      preset_picture[i - (r - r3), j - (r - r3)] = pimage[i, j] 
  else: 
   reset_picture.paste(image, (self.border, self.border)) 
  return reset_picture, size 
 def blank_image(self, size, img_type=None): 
  if img_type: 
   new_size = size + self.border * 2 
   color_type = (255, 255, 255) 
   return Image.new('RGBA', (new_size, new_size), color_type) 
  else: 
   color_type = (255, 255, 255, 0) 
   return Image.new('RGBA', (size, size), color_type) 
 def final_paste(self): 
  r, g, b, a = self.icon.split() 
  locate = self.picture_size+ self.border//2 -self.icon_size 
  self.picture.paste(self.icon, (locate, locate), mask=a) 
  self.picture.save('result.png') 
def run(): 
 main = NationalFlag() 
 main.final_paste() 
if __name__ == '__main__': 
 parser = argparse.ArgumentParser() 
 parser.add_argument("-p", "--picture", required=True, 
      help="请填写所需制作的图片全路径") 
 args = parser.parse_args() 
 run()