1 files changed, 70 insertions, 0 deletions
diff --git a/share/extensions/merge_styles.py b/share/extensions/merge_styles.py
new file mode 100755
index 0000000..0076f2c
--- /dev/null
+++ b/share/extensions/merge_styles.py
@@ -0,0 +1,70 @@
+#!/usr/bin/env python
+# coding=utf-8
+#
+# Copyright (C) 2014-2019 Martin Owens
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+"""
+Merges styles into class based styles and removes.
+"""
+
+import inkex
+from inkex.localization import inkex_gettext as _
+
+
+class MergeStyles(inkex.EffectExtension):
+    """Merge any styles which are the same for CSS"""
+
+    def add_arguments(self, pars):
+        self.arg_parser.add_argument(
+            "-n",
+            "--name",
+            type=str,
+            dest="name",
+            help="Name of selected element's common class",
+        )
+
+    def effect(self):
+        """Apply the style effect"""
+        newclass = self.options.name
+        if not newclass:
+            newclass = self.svg.get_unique_id("css")
+
+        elements = self.svg.selection.values()
+        common = None
+
+        for elem in elements:
+            style = set(elem.style.items())
+            if common is not None:
+                common &= style
+            else:
+                common = style
+
+        if not common:
+            return inkex.errormsg(
+                _("There are no common styles between these elements.")
+            )
+
+        self.svg.stylesheet.add("." + newclass, inkex.Style(sorted(common)))
+
+        for elem in elements:
+            elem.style -= dict(common).keys()
+            elem.classes.append(newclass)
+        return True
+
+
+if __name__ == "__main__":
+    MergeStyles().run()