async def generate_image_online(latex, colour_back = None, colour_text = '000000'):
payload = {
'format': 'png',
'code': latex.strip(),
}
async with aiohttp.ClientSession() as session:
try:
async with session.post(LATEX_SERVER_URL, json = payload, timeout = 8) as loc_req:
loc_req.raise_for_status()
jdata = await loc_req.json()
# print('LOG:\n', jdata.get('log'))
# print(jdata.get('status'))
# print(jdata.get('description'))
if jdata['status'] == 'error':
# print(json.dumps(jdata))
raise RenderingError
filename = jdata['filename']
# Now actually get the image
async with session.get(LATEX_SERVER_URL + '/' + filename, timeout = 3) as img_req:
img_req.raise_for_status()
fo = io.BytesIO(await img_req.read())
image = PIL.Image.open(fo).convert('RGBA')
except aiohttp.client_exceptions.ClientResponseError:
raise RenderingError
if colour_back is not None:
colour_back = imageutil.hex_to_tuple(colour_back)
back = imageutil.new_monocolour(image.size, colour_back)
back.paste(image, (0, 0), image)
image = imageutil.add_border(back, 4, colour_back)
return image
async def generate_image_online(latex, colour_back):
payload = {
'format': 'png',
'code': latex.strip(),
}
async with aiohttp.ClientSession() as session:
try:
async with session.post(LATEX_SERVER_URL, json=payload,
timeout=8) as loc_req:
loc_req.raise_for_status()
jdata = await loc_req.json()
if jdata['status'] == 'error':
raise RenderingError(jdata.get('log'))
filename = jdata['filename']
# Now actually get the image
async with session.get(LATEX_SERVER_URL + '/' + filename,
timeout=3) as img_req:
img_req.raise_for_status()
fo = io.BytesIO(await img_req.read())
image = PIL.Image.open(fo).convert('RGBA')
except aiohttp.client_exceptions.ClientResponseError:
raise RenderingError(None)
if image.width <= 2 or image.height <= 2:
raise RenderingError(None)
border_size = 4
colour_back = imageutil.hex_to_tuple(colour_back)
width, height = image.size
backing = imageutil.new_monocolour(
(width + border_size * 2, height + border_size * 2), colour_back)
backing.paste(image, (border_size, border_size), image)
fobj = io.BytesIO()
backing.save(fobj, format='PNG')
fobj = io.BytesIO(fobj.getvalue())
return fobj
async def generate_image_online(latex, colour_back=None, colour_text='000000'):
latex = latex.strip()
payload = TEX_PAYLOAD.format(latex=semiquote(latex),
preamble=semiquote(PREAMBLE),
colour=colour_text)
# Query the server, it will return the url to get the actual image from.
# url = 'http://quicklatex.com/latex3.f' + payload
async with aiohttp.ClientSession() as session:
async with session.post('http://quicklatex.com/latex3.f',
data=payload,
timeout=8) as loc_req:
loc_req.raise_for_status()
text = await loc_req.text()
# print(text)
# img_url = text.split('\n')[1].split(' ')[0]
# for i in blobs.groups():
# print('GROUP:', i)
blobs = re.match(RESPONSE_PARSING_REGEX, text)
status, img_url, valign, imgw, imgh, errmsg = blobs.groups()
if status != '0':
raise RenderingError(errmsg)
if int(imgw) < 4 or int(imgh) < 4:
raise EmptyImageError
# var status = regs[1];
# var imgurl = regs[2];
# var valign = regs[3];
# var imgw = regs[4];
# var imgh = regs[5];
# var errmsg = regs[6];
# Now actually get the image
async with session.get(img_url, timeout=3) as img_req:
img_req.raise_for_status()
fo = io.BytesIO(await img_req.read())
image = PIL.Image.open(fo).convert('RGBA')
if colour_back is not None:
colour_back = imageutil.hex_to_tuple(colour_back)
back = imageutil.new_monocolour(image.size, colour_back)
back.paste(image, (0, 0), image)
image = imageutil.add_border(back, 4, colour_back)
return image