Support for presenting multiple graphs

* grapher/Graph.hxx: New file; class for single graph display.
* grapher/Graph.cxx: New file.
* grapher/GraphData.hxx: Associate title and axis labels with graph
data and not a graph display.
* grapher/GraphWidget.hxx: Move graph-related members to Graph class.
* grapher/GraphWidget.cxx (getExtents, setExtents): Move to Graph
class
(on_expose_event): Move graph rendering to Graph.
(on_button_press_event): Delegate to Graph.
(on_motion_notify_event, on_scroll_event): Modify "active" graph.
* grapher/StapParser.cxx (findTaggedValue): New parsing helper
function.
(io_callback): Support new syntax where properties are attached to
graph data and not the entire graph.
* grapher/grapher.cxx (GrapherWindow): Don't set graph values.
* grapher/Makefile.am: Add Graph.cxx.
* testsuite/systemtap.examples/general/grapher.stp: New property syntax.

1 files changed, 4 insertions, 0 deletions

diff --git a/grapher/GraphData.hxx b/grapher/GraphData.hxx
index 9bf3b624..e4c08cfd 100644
--- a/grapher/GraphData.hxx
+++ b/grapher/GraphData.hxx
@@ -1,6 +1,7 @@
 #ifndef SYSTEMTAP_GRAPHDATA_HXX
 #define SYSTEMTAP_GRAPHDATA_HXX 1
 
+#include <string>
 #include <utility>
 #include <vector>
 #include <tr1/memory>
@@ -24,6 +25,9 @@ namespace systemtap
     double scale;
     double color[3];
     Style style;
+    std::string title;
+    std::string xAxisText;
+    std::string yAxisText;
     TimeList times;
   };