1 files changed, 58 insertions, 0 deletions
diff --git a/share/extensions/inkwebeffect.py b/share/extensions/inkwebeffect.py
new file mode 100755
index 0000000..f468780
--- /dev/null
+++ b/share/extensions/inkwebeffect.py
@@ -0,0 +1,58 @@
+#!/usr/bin/env python
+# coding=utf-8
+#
+# Copyright (C) 2009 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.
+#
+
+import os
+import re
+import sys
+
+import inkex
+from inkex import Script
+
+
+class InkWebEffect(inkex.EffectExtension):
+    reUpdateJS = "/\\*\\s* inkweb.js [^*]* InkWebEffect:AutoUpdate \\s*\\*/"
+
+    def effect(self):
+        pass
+
+    def mustAddInkWebJSCode(self, script):
+        if not script.text:
+            return True
+        if re.search(self.reUpdateJS, script.text):
+            return True
+        return False
+
+    def addInkWebJSCode(self, script):
+        with open(os.path.join(sys.path[0], "inkweb.js")) as js:
+            script.set_text("\n/* inkweb.js - InkWebEffect:AutoUpdate */\n" + js.read())
+
+    def ensureInkWebSupport(self):
+        # Search for the script tag with the inkweb.js code:
+        script = None
+        for child in self.svg.xpath("//svg:script"):
+            if re.search(self.reUpdateJS, child.text):
+                script = child
+
+        if script is None:
+            script = Script(id="inkwebjs", type="text/javascript")
+            self.svg.insert(0, script)
+
+        if self.mustAddInkWebJSCode(script):
+            self.addInkWebJSCode(script)