Fix icon scaling

generate.py

@@ -1,13 +1,21 @@
 import os
 
+ICON_SIZE = 1024
+
 def make_file(directory, name, out):
-    out.write('<ha-iconset-svg name="{}" size="512"><svg><defs>\n'.format(name))
+    out.write('<ha-iconset-svg name="{}" size="{}"><svg><defs>\n'.format(name, ICON_SIZE))
     for f in os.listdir(directory):
         with open(os.path.join(directory, f), 'r') as fp:
             name = os.path.splitext(f)[0]
             data = fp.read()
+            size_start = data.find('viewBox="')+len('viewBox="')
+            size_end = data[size_start:].find('">')
+            size = data[size_start:size_start+size_end].split(' ')
+            width = float(size[2])
+            height = float(size[3])
+            scale = max(width, height)/ICON_SIZE
             start = data.find('<path')
-            out.write('<g id="{}">'.format(name) + data[start:-6] + '</g>\n')
+            out.write('<g id="{0}" transform="scale({1} {1})">'.format(name, 1/scale) + data[start:-6] + '</g>\n')
     out.write('</defs></svg></ha-iconset-svg>')
 
 # Run this in Font-Awesome/advanced-options/raw-svg/