create.py

import os
from PIL import Image
import re
import random
import datetime
import sprite

'''
代码中一些字符注释：
w:图片宽度
h:图片高度

'''

# 生成雪碧图片和css，放在哪里的路径
spritePath = '/Users/waston/PycharmProjects/sprite/publish/'

# 需要合成雪碧图片的小图片路径
imagesPath = '/Users/waston/PycharmProjects/sprite/pic/'

# class 前缀
prefix = 'review'

# class 标识符
classSign = '-'

# 规定一份雪碧图中有多少张图片
numbers = 100

files = os.listdir(imagesPath)

sizeList = []
imgList = []

for f in files:

    img = Image.open(imagesPath + f)
    imgList.append(img)

    w, h = img.size
    sizeList.append([w, h])

for lists in [sizeList[i:i + numbers] for i in range(0, len(sizeList), numbers)]:
    result = sprite.createSprite(lists)
    print(result)

    width = result['w']
    height = result['h']
    r = result['r']

    # 创建画布 画布为10*10大小，最多可以存放100张图片
    canvas = Image.new('RGBA', (width, height))

    # 合并图片
    for v in r:
        p = v['p']
        img = imgList[p]
        # 原本图片大小缩放十倍
        img = img.resize((width // 10, height // 10), Image.ANTIALIAS)
        x = v['x']
        y = v['y']
        canvas.paste(img, (x, y))

    # end for v in r

    # 生成 sprite 的名字
    now = datetime.datetime.now()
    d1 = '%d-' % int(random.random() * 10000)
    d2 = '%d-%d-%d' % (now.year, now.month, now.day)

    spriteName = prefix + classSign + d1 + d2 + '.png'

    # 输出图片
    canvas.save(spritePath + spriteName, 'png')

print('生成完毕')