Replace Ferese logos with shared Fe mark

scripts/update-branding.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+"""Export Ferese's symbolic icon and favicons from its canonical SVG."""
+from io import BytesIO
+from pathlib import Path
+import xml.etree.ElementTree as ET
+
+import cairo
+import gi
+from PIL import Image
+
+gi.require_version('Rsvg', '2.0')
+from gi.repository import Rsvg
+
+ROOT = Path(__file__).resolve().parent.parent
+BRANDING = ROOT / 'assets/branding'
+SVG = 'http://www.w3.org/2000/svg'
+ET.register_namespace('', SVG)
+
+
+def render(path, size):
+    handle = Rsvg.Handle.new_from_file(str(path))
+    surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, *size)
+    viewport = Rsvg.Rectangle()
+    viewport.x = viewport.y = 0
+    viewport.width, viewport.height = size
+    handle.render_document(cairo.Context(surface), viewport)
+    output = BytesIO()
+    surface.write_to_png(output)
+    output.seek(0)
+    with Image.open(output) as image:
+        return image.convert('RGBA')
+
+
+def main():
+    symbolic = ET.parse(BRANDING / 'ferese.svg').getroot()
+    for defs in symbolic.findall(f'{{{SVG}}}defs'):
+        symbolic.remove(defs)
+    for path in symbolic.iter(f'{{{SVG}}}path'):
+        path.set('fill', 'currentColor')
+    ET.indent(symbolic, space='  ')
+    (BRANDING / 'ferese-symbolic.svg').write_text(ET.tostring(symbolic, encoding='unicode') + '\n')
+
+    icon = render(BRANDING / 'ferese.svg', (512, 512))
+    icon.resize((32, 32), Image.Resampling.LANCZOS).save(ROOT / 'site/assets/favicon-32.png')
+    icon.save(ROOT / 'site/assets/favicon.ico', sizes=[(16, 16), (32, 32), (48, 48)])
+
+    print('Updated symbolic icon and favicons from the canonical Fe mark.')
+
+
+if __name__ == '__main__':
+    main()