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32fd6910d0
parse_integer and parse_string can take a request and raise errors in case we have wrong or missing params. This PR tries to use them more to deduplicate some code and make it better readable
69 lines
2.1 KiB
Python
69 lines
2.1 KiB
Python
# Copyright 2015, 2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from pydenticon import Generator
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from synapse.http.servlet import parse_integer
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from twisted.web.resource import Resource
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FOREGROUND = [
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"rgb(45,79,255)",
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"rgb(254,180,44)",
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"rgb(226,121,234)",
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"rgb(30,179,253)",
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"rgb(232,77,65)",
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"rgb(49,203,115)",
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"rgb(141,69,170)"
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]
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BACKGROUND = "rgb(224,224,224)"
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SIZE = 5
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class IdenticonResource(Resource):
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isLeaf = True
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def __init__(self):
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Resource.__init__(self)
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self.generator = Generator(
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SIZE, SIZE, foreground=FOREGROUND, background=BACKGROUND,
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)
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def generate_identicon(self, name, width, height):
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v_padding = width % SIZE
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h_padding = height % SIZE
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top_padding = v_padding // 2
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left_padding = h_padding // 2
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bottom_padding = v_padding - top_padding
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right_padding = h_padding - left_padding
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width -= v_padding
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height -= h_padding
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padding = (top_padding, bottom_padding, left_padding, right_padding)
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identicon = self.generator.generate(
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name, width, height, padding=padding
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)
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return identicon
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def render_GET(self, request):
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name = "/".join(request.postpath)
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width = parse_integer(request, "width", default=96)
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height = parse_integer(request, "height", default=96)
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identicon_bytes = self.generate_identicon(name, width, height)
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request.setHeader(b"Content-Type", b"image/png")
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request.setHeader(
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b"Cache-Control", b"public,max-age=86400,s-maxage=86400"
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)
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return identicon_bytes
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