66 lines
2.1 KiB
Python
66 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 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 = int(request.args.get("width", [96])[0])
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height = int(request.args.get("height", [96])[0])
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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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