Make icon badge independent of the view box of the SVG

(grafted from 7173c77acabbd6f8d9af4412d20b18d701e591dd)

--HG--
branch : 6.0

tryton/tryton/common/common.py

@@ -135,6 +135,11 @@ class IconFactory:
                 ET.register_namespace('', 'http://www.w3.org/2000/svg')
                 root = ET.fromstring(data)
                 root.attrib['fill'] = color
+                view_box = root.attrib.get('viewBox')
+                if view_box:
+                    min_x, min_y, width, height = map(
+                        float, view_box.split(' '))
+                    factor = max(width, height) / 24
                 if badge:
                     if not isinstance(badge, str):
                         try:
@@ -142,9 +147,9 @@ class IconFactory:
                         except IndexError:
                             badge = color
                     ET.SubElement(root, 'circle', {
-                            'cx': '20',
-                            'cy': '4',
-                            'r': '4',
+                            'cx': str(20 * factor + min_x),
+                            'cy': str(4 * factor + min_y),
+                            'r': str(4 * factor),
                             'fill': badge,
                             })
                 data = ET.tostring(root)