51 lines
1.3 KiB
Python
51 lines
1.3 KiB
Python
import hashlib
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import json
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from nonebot.log import logger as sv
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import os
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import random
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import time
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from io import BytesIO
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import aiohttp
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import qrcode
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import requests
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import requests.exceptions
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from PIL import Image, ImageDraw, ImageFont
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# PNG重绘大小
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def png_resize(source_file, new_width=0, new_height=0, resample="LANCZOS", ref_file=''):
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"""
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PNG缩放透明度处理
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:param source_file: 源文件（Image.open()）
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:param new_width: 设置的宽度
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:param new_height: 设置的高度
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:param resample: 抗锯齿
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:param ref_file: 参考文件
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:return:
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"""
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img = source_file
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img = img.convert("RGBA")
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width, height = img.size
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if ref_file != '':
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imgRef = Image.open(ref_file)
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new_width, new_height = imgRef.size
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else:
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if new_height == 0:
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new_height = new_width * width / height
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bands = img.split()
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resample_map = {
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"NEAREST": Image.NEAREST,
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"BILINEAR": Image.BILINEAR,
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"BICUBIC": Image.BICUBIC,
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"LANCZOS": Image.LANCZOS
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}
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resample_method = resample_map.get(resample, Image.LANCZOS) # 默认使用 LANCZOS
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bands = [b.resize((new_width, new_height), resample=resample_method) for b in bands]
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resized_file = Image.merge('RGBA', bands)
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return resized_file
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