50 lines
1.9 KiB
Python
50 lines
1.9 KiB
Python
import tempfile
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from PIL import Image
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from telegram import Update
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from telegram.ext import Dispatcher, CallbackContext, MessageHandler, Filters
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from bots.models import TelegramBotModuleConfig
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class StickersBotModuleConfig(TelegramBotModuleConfig):
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MODULE_NAME = 'Stickers'
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def resize_image(self, update: Update, ctx: CallbackContext):
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doc = update.message.document
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if update.message.photo:
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with tempfile.NamedTemporaryFile(suffix='.jpg') as f:
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f.write(update.message.photo[-1].get_file().download_as_bytearray())
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f.seek(0)
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im = Image.open(f).convert('RGBA')
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else:
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if doc.mime_type == 'image/png':
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suffix = '.png'
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elif doc.mime_type == 'image/jpeg':
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suffix = '.jpg'
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else:
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return
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with tempfile.NamedTemporaryFile(suffix=suffix) as f:
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f.write(doc.get_file().download_as_bytearray())
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f.seek(0)
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im = Image.open(f).convert('RGBA')
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width, height = im.size
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long_dimension = max(width, height)
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scale_ratio = 512 / long_dimension
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target_width = int(width * scale_ratio)
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target_height = int(height * scale_ratio)
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if long_dimension == width:
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target_width = 512
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else:
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target_height = 512
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im = im.resize((target_width, target_height), Image.ANTIALIAS)
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with tempfile.NamedTemporaryFile(suffix='.png') as f:
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im.quantize(method=2).save(f, 'png')
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f.seek(0)
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update.message.reply_document(f, caption=f'{width}x{height} -> {target_width}x{target_height}')
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def build_dispatcher(self, dispatcher: Dispatcher):
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dispatcher.add_handler(MessageHandler(Filters.document, self.resize_image))
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dispatcher.add_handler(MessageHandler(Filters.photo, self.resize_image))
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return dispatcher
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