Add a way to specify style/color on nodes. References: #184

demo/moulinrouge/tests.py

@@ -535,4 +535,17 @@ def get_test_routes(app):
         graph.legend_at_bottom = True
         return graph.render_response()
 
+    @app.route('/test/custom_metadata/<chart>')
+    def test_custom_metadata_for(chart):
+        c = CHARTS_BY_NAME[chart]()
+        c.add('1', [
+            {'style': 'fill: red', 'value': 1},
+            {'color': 'blue', 'value': 2},
+            {'style': 'fill: red; stroke: yellow', 'value': 3}])
+        c.add('2', [
+            {'value': 4},
+            {'color': 'green', 'value': 5},
+            6])
+        return c.render_response()
+
     return list(sorted(filter(lambda x: x.startswith('test'), locals())))

pygal/util.py

@@ -239,11 +239,20 @@ def decorate(svg, node, metadata):
             xlink = {'href': xlink, 'target': '_blank'}
         node = svg.node(node, 'a', **xlink)
 
+    if 'color' in metadata:
+        color = metadata.pop('color')
+        node.attrib['style'] = 'fill: %s; stroke: %s' % (
+            color, color)
+
+    if 'style' in metadata:
+        node.attrib['style'] = metadata.pop('style')
+
     for key, value in metadata.items():
         if key == 'xlink' and isinstance(value, dict):
             value = value.get('href', value)
         if value:
             svg.node(node, 'desc', class_=key).text = to_unicode(value)
+
     return node