scheme: dynamic light theme

Autodetect based on wallpaper
Also resize wallpaper so faster
And async magick blur so wallpaper doesnt block

scheme/resizeimg.py

@@ -0,0 +1,29 @@
+#!/bin/python
+
+import sys
+import math
+from PIL import Image
+
+
+def calc_size(w, h, b = 128):
+    ia = w * h
+    ba = b * b
+    s = math.sqrt(ba / ia) if ia > ba else 1
+    return max(1, round(w * s)), max(1, round(h * s))
+
+
+def resize(img):
+    w, h = calc_size(img.width, img.height)
+    if w < img.width or h < img.height:
+        return img.resize((w, h), Image.Resampling.BICUBIC), True
+    return img, False
+
+
+if __name__ == "__main__":
+    with Image.open(sys.argv[1]) as img:
+        img, resized = resize(img)
+        if resized:
+            img.save("/tmp/caelestia-resize.png")
+            print("/tmp/caelestia-resize.png")
+        else:
+            print(sys.argv[1])