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45 lines
1.6 KiB
Python
45 lines
1.6 KiB
Python
#
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# PyOtherSide: Asynchronous Python 3 Bindings for Qt 5
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# Copyright (c) 2011, 2013, Thomas Perl <m@thp.io>
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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# FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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# PERFORMANCE OF THIS SOFTWARE.
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#
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import pyotherside
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import math
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def render(image_id, requested_size):
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print('image_id: "{image_id}", size: {requested_size}'.format(**locals()))
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# width and height will be -1 if not set in QML
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if requested_size == (-1, -1):
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requested_size = (300, 300)
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width, height = requested_size
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# center for circle
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cx, cy = width/2, 10
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pixels = []
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for y in range(height):
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for x in range(width):
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pixels.extend(reversed([
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255, # alpha
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int(10 + 10 * ((x - y * 0.5) % 20)), # red
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20 + 10 * (y % 20), # green
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int(255 * abs(math.sin(0.3*math.sqrt((cx-x)**2 + (cy-y)**2)))) # blue
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]))
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return bytearray(pixels), (width, height), pyotherside.format_argb32
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pyotherside.set_image_provider(render)
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