1 files changed, 72 insertions, 0 deletions
diff --git a/share/extensions/jessyink_transitions.py b/share/extensions/jessyink_transitions.py
new file mode 100755
index 0000000..2540feb
--- /dev/null
+++ b/share/extensions/jessyink_transitions.py
@@ -0,0 +1,72 @@
+#!/usr/bin/env python3
+#
+# Copyright 2008, 2009 Hannes Hochreiner
+#
+# 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 3 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, see http://www.gnu.org/licenses/.
+#
+"""Effect to add transitions"""
+
+import inkex
+from inkex.styles import Style
+
+from jessyink_install import JessyInkMixin, _
+
+
+class Transitions(JessyInkMixin, inkex.EffectExtension):
+    """Add transition to later"""
+
+    def add_arguments(self, pars):
+        pars.add_argument("--tab", dest="what")
+        pars.add_argument("--layerName", default="")
+        pars.add_argument("--effectIn", default="default")
+        pars.add_argument("--effectOut", default="default")
+        pars.add_argument("--effectInDuration", type=float, default=0.8)
+        pars.add_argument("--effectOutDuration", type=float, default=0.8)
+
+    def effect(self):
+        self.is_installed()
+
+        if not self.options.layerName:
+            raise inkex.AbortExtension(_("Please enter a layer name."))
+
+        node = self.svg.getElement(
+            f"//*[@inkscape:groupmode='layer' "
+            f"and @inkscape:label='{self.options.layerName}']"
+        )
+        if node is None:
+            raise inkex.AbortExtension(
+                _("Layer '{}' not found.").format(self.options.layerName)
+            )
+
+        if self.options.effectIn == "default":
+            node.set("jessyink:transitionIn", None)
+        else:
+            length = int(self.options.effectInDuration * 1000)
+            node.set(
+                "jessyink:transitionIn",
+                Style(name=self.options.effectIn, length=length),
+            )
+
+        if self.options.effectOut == "default":
+            node.set("jessyink:transitionOut", None)
+        else:
+            length = int(self.options.effectOutDuration * 1000)
+            node.set(
+                "jessyink:transitionOut",
+                Style(name=self.options.effectOut, length=length),
+            )
+
+
+if __name__ == "__main__":
+    Transitions().run()