Set fake width instead of actually resizing image

The image quality shouldn't be reduced, but it should be shown smaller in clients.

Also add compatibility hack for broken clients like Element iOS that require a thumbnail_url
This commit is contained in:
Tulir Asokan 2020-09-05 15:44:04 +03:00
parent 3876e13d4d
commit 993b4af549

View File

@ -85,7 +85,6 @@ class MatrixStickerInfo(TypedDict, total=False):
def convert_image(data: bytes) -> (bytes, int, int):
image: Image.Image = Image.open(BytesIO(data)).convert("RGBA")
image.thumbnail((256, 256), Image.ANTIALIAS)
new_file = BytesIO()
image.save(new_file, "png")
w, h = image.size
@ -100,6 +99,14 @@ async def reupload_document(client: TelegramClient, document: Document) -> Matri
print(".", end="", flush=True)
mxc = await upload(data, "image/png", f"{document.id}.png")
print(".", flush=True)
if width > 256 or height > 256:
# Set the width and height to lower values so clients wouldn't show them as huge images
if width > height:
height = int(height / (width / 256))
width = 256
else:
width = int(width / (height / 256))
height = 256
return {
"body": "",
"url": mxc,
@ -108,6 +115,14 @@ async def reupload_document(client: TelegramClient, document: Document) -> Matri
"h": height,
"size": len(data),
"mimetype": "image/png",
# Element iOS compatibility hack
"thumbnail_url": mxc,
"thumbnail_info": {
"w": width,
"h": height,
"size": len(data),
},
},
}