hover text on the additional graphs

* grapher/Graph.cxx (window2GraphCoords): Take the entire graph's
  position into account too.
* grapher/GraphWidget.cxx (GraphWidget): Hook up the data dialog's OK
  button.
  (onDataDialogOpen): If a data set doesn't have a title, use it's
  name (key) instead.

1 files changed, 1 insertions, 1 deletions

diff --git a/grapher/Graph.cxx b/grapher/Graph.cxx
index 57f1dc9a..b3429ef7 100644
--- a/grapher/Graph.cxx
+++ b/grapher/Graph.cxx
@@ -210,6 +210,6 @@ namespace systemtap
                                  double& xgraph, double& ygraph)
   {
     xgraph = x -_xOffset;
-    ygraph = -y + _yOffset + _graphHeight;
+    ygraph = -(y - _graphY) + _yOffset + _graphHeight;
   }
 }