mirror of
https://github.com/maunium/stickerpicker
synced 2024-09-20 00:30:52 +00:00
135 lines
4.3 KiB
Python
135 lines
4.3 KiB
Python
# maunium-stickerpicker - A fast and simple Matrix sticker picker widget.
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# Copyright (C) 2020 Tulir Asokan
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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from functools import partial
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from io import BytesIO
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import os.path
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import json
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import tempfile
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import mimetypes
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try:
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import magic
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except ImportError:
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print("[Warning] Magic is not installed, using file extensions to guess mime types")
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magic = None
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from PIL import Image
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from . import matrix
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open_utf8 = partial(open, encoding='UTF-8')
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def guess_mime(data: bytes) -> str:
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mime = None
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if magic:
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try:
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return magic.Magic(mime=True).from_buffer(data)
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except Exception:
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pass
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else:
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with tempfile.NamedTemporaryFile(delete=False) as temp:
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temp.write(data)
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temp.close()
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mime, _ = mimetypes.guess_type(temp.name)
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return mime or "image/png"
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def video_to_gif(data: bytes, mime: str) -> bytes:
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from moviepy.editor import VideoFileClip
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ext = mimetypes.guess_extension(mime)
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with tempfile.NamedTemporaryFile(suffix=ext) as temp:
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temp.write(data)
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temp.flush()
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with tempfile.NamedTemporaryFile(suffix=".gif") as gif:
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clip = VideoFileClip(temp.name)
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clip.write_gif(gif.name, logger=None)
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gif.seek(0)
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return gif.read()
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def _convert_image(data: bytes) -> (bytes, int, int):
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image: Image.Image = Image.open(BytesIO(data)).convert("RGBA")
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new_file = BytesIO()
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image.save(new_file, "png")
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w, h = image.size
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if w > 256 or h > 256:
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# Set the width and height to lower values so clients wouldn't show them as huge images
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if w > h:
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h = int(h / (w / 256))
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w = 256
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else:
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w = int(w / (h / 256))
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h = 256
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return new_file.getvalue(), w, h
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def convert_image(data: bytes) -> (bytes, str, int, int):
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mimetype = guess_mime(data)
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if mimetype.startswith("video/"):
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data = video_to_gif(data, mimetype)
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print(".", end="", flush=True)
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mimetype = "image/gif"
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try:
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rlt = _convert_image(data)
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return rlt[0], mimetype, rlt[1], rlt[2]
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except Exception as e:
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print(f"Error converting image, mimetype: {mimetype}")
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ext = mimetypes.guess_extension(mimetype)
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with tempfile.NamedTemporaryFile(delete=False, suffix=ext) as temp:
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temp.write(data)
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print(f"Saved to {temp.name}")
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raise e
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def add_to_index(name: str, output_dir: str) -> None:
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index_path = os.path.join(output_dir, "index.json")
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try:
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with open_utf8(index_path) as index_file:
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index_data = json.load(index_file)
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except (FileNotFoundError, json.JSONDecodeError):
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index_data = {"packs": []}
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if "homeserver_url" not in index_data and matrix.homeserver_url:
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index_data["homeserver_url"] = matrix.homeserver_url
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if name not in index_data["packs"]:
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index_data["packs"].append(name)
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with open_utf8(index_path, "w") as index_file:
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json.dump(index_data, index_file, indent=" ")
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print(f"Added {name} to {index_path}")
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def make_sticker(mxc: str, width: int, height: int, size: int,
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mimetype: str, body: str = "") -> matrix.StickerInfo:
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return {
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"body": body,
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"url": mxc,
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"info": {
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"w": width,
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"h": height,
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"size": size,
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"mimetype": mimetype,
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# Element iOS compatibility hack
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"thumbnail_url": mxc,
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"thumbnail_info": {
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"w": width,
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"h": height,
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"size": size,
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"mimetype": mimetype,
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},
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},
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"msgtype": "m.sticker",
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}
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