BarGraphItem CSV export and documentation

doc/source/graphicsItems/bargraphitem.rst

@@ -0,0 +1,8 @@
+BarGraphItem
+============
+
+.. autoclass:: pyqtgraph.BarGraphItem
+    :members:
+
+    .. automethod:: pyqtgraph.BarGraphItem.__init__
+

pyqtgraph/graphicsItems/BarGraphItem.py

@@ -40,6 +40,7 @@ class BarGraphItem(GraphicsObject):
             y0=None,
             x1=None,
             y1=None,
+            name=None,
             height=None,
             width=None,
             pen=None,
@@ -166,3 +167,15 @@ class BarGraphItem(GraphicsObject):
         if self.picture is None:
             self.drawPicture()
         return self._shape
+
+    def implements(self, interface=None):
+        ints = ['plotData']
+        if interface is None:
+            return ints
+        return interface in ints
+
+    def name(self):
+        return self.opts.get('name', None)
+
+    def getData(self):
+        return self.opts.get('x'),  self.opts.get('height')