1 files changed, 55 insertions, 0 deletions
diff --git a/share/extensions/webslicer_effect.py b/share/extensions/webslicer_effect.py
new file mode 100755
index 0000000..ae59d72
--- /dev/null
+++ b/share/extensions/webslicer_effect.py
@@ -0,0 +1,55 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2010 Aurelio A. Heckert, aurium (a) gmail dot com
+#
+# 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.
+#
+"""
+Common elements between webslicer extensions
+"""
+
+import inkex
+from inkex import Group
+
+
+def is_empty(val):
+    return val in ("", None)
+
+
+class WebSlicerMixin(object):
+    def get_slicer_layer(self, force_creation=False):
+        # Test if webslicer-layer layer existis
+        layer = self.svg.getElement(
+            '//*[@id="webslicer-layer" and @inkscape:groupmode="layer"]'
+        )
+        if layer is None:
+            if force_creation:
+                # Create a new layer
+                layer = Group(id="webslicer-layer")
+                layer.set("inkscape:label", "Web Slicer")
+                layer.set("inkscape:groupmode", "layer")
+                self.document.getroot().append(layer)
+            else:
+                layer = None
+        return layer
+
+    def get_conf_text_from_list(self, conf_atts):
+        conf_list = []
+        for att in conf_atts:
+            if not is_empty(getattr(self.options, att)):
+                conf_list.append(
+                    att.replace("_", "-") + ": " + str(getattr(self.options, att))
+                )
+        return "\n".join(conf_list)