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#
# PyOtherSide: Asynchronous Python 3 Bindings for Qt 5 and Qt 6
# Copyright (c) 2011, 2013, Thomas Perl <m@thp.io>
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
# FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
# PERFORMANCE OF THIS SOFTWARE.
#
import pyotherside
import math
def render(image_id, requested_size):
print('image_id: "{image_id}", size: {requested_size}'.format(**locals()))
# width and height will be -1 if not set in QML
if requested_size == (-1, -1):
requested_size = (300, 300)
width, height = requested_size
# center for circle
cx, cy = width/2, 10
pixels = []
for y in range(height):
for x in range(width):
pixels.extend(reversed([
255, # alpha
int(10 + 10 * ((x - y * 0.5) % 20)), # red
20 + 10 * (y % 20), # green
int(255 * abs(math.sin(0.3*math.sqrt((cx-x)**2 + (cy-y)**2)))) # blue
]))
return bytearray(pixels), (width, height), pyotherside.format_argb32
pyotherside.set_image_provider(render)
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