143 lines
3.1 KiB
Python
Executable file
143 lines
3.1 KiB
Python
Executable file
#!/usr/bin/env python
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import re
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import shutil
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import subprocess
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import sys
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import tempfile
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import os
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LOGO_RES_QUERY = r'([0-9]+) x ([0-9]+)'
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SCREEN_RES_QUERY = r'connected (?:primary |)([0-9]+)x([0-9]+)\+([0-9]+)\+([0-9]+)'
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def blur_canvas(tempdir):
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subprocess.check_call([
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'convert',
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get_canvas_filename(tempdir),
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'-gaussian-blur', '0x4',
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get_canvas_filename(tempdir),
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])
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def cleanup(tempdir):
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shutil.rmtree(tempdir)
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def create_canvas(tempdir, resolutions):
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w, h = get_canvas_size(resolutions)
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subprocess.check_call([
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'convert',
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'-size', '{}x{}'.format(w, h),
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'xc:none',
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get_canvas_filename(tempdir),
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])
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def get_canvas_filename(tempdir):
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return os.path.join(tempdir, 'canvas.png')
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def get_canvas_size(resolutions):
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w, h = 0, 0
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for res in resolutions:
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w = max(w, res['x']+res['w'])
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h = max(h, res['y']+res['h'])
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return (w, h)
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def get_image_resolutions():
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resolutions = []
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for line in subprocess.check_output(['xrandr', '--query']).decode('utf-8').split('\n'):
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res = re.search(SCREEN_RES_QUERY, line)
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if res is None:
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continue
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resolutions.append({
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'w': int(res.group(1)),
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'h': int(res.group(2)),
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'x': int(res.group(3)),
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'y': int(res.group(4)),
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})
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return resolutions
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def move_image(tempdir):
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filename = os.path.expanduser('~/.local/share/screen-lock.png')
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os.makedirs(os.path.dirname(filename), exist_ok=True)
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shutil.move(get_canvas_filename(tempdir), filename)
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def render_base_on_canvas(tempdir, res):
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url = 'https://source.unsplash.com/{w}x{h}/?nature,water'.format(**res)
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subprocess.check_call([
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'convert',
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get_canvas_filename(tempdir),
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url,
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'-geometry', '+{x}+{y}'.format(**res),
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'-composite', '-matte',
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get_canvas_filename(tempdir),
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])
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def render_logo_on_canvas(tempdir, res):
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filename = os.path.expanduser('~/.config/screen-lock.png')
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if not os.path.exists(filename):
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return
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lres = re.search(LOGO_RES_QUERY, subprocess.check_output(
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['file', filename]).decode('utf-8'))
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if lres is None:
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return
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geo = {
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'x': res['x']+res['w']/2-int(lres.group(1))/2,
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'y': res['y']+res['h']/2-int(lres.group(2))/2,
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}
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subprocess.check_call([
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'convert',
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get_canvas_filename(tempdir),
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filename,
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'-geometry', '+{x}+{y}'.format(**geo),
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'-composite', '-matte',
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get_canvas_filename(tempdir),
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])
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def main():
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tempdir = tempfile.mkdtemp()
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try:
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resolutions = get_image_resolutions()
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create_canvas(tempdir, resolutions)
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for res in resolutions:
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render_base_on_canvas(tempdir, res)
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blur_canvas(tempdir)
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for res in resolutions:
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render_logo_on_canvas(tempdir, res)
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move_image(tempdir)
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return 0
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except Exception as e:
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print('Something went wrong:\n{}'.format(e))
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return 1
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finally:
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cleanup(tempdir)
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if __name__ == '__main__':
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sys.exit(main())
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