From 03ebf81c360e429ef1e4f8bae48fe524f712589a Mon Sep 17 00:00:00 2001
From: Tim Moore <timoore@redhat.com>
Date: Thu, 3 Dec 2009 19:31:08 +0100
Subject: Hover text for event-style graphs

Don't draw the data value for an event; only display it in hover text.

* grapher/Graph.hxx (window2GraphCoords): new function
* grapher/Graph.cxx (window2GraphCoords): ditto
* grapher/GraphStyle.cxx (GraphStyleEvent::dataIndexAtPoint): new
  function implementation.
---
 grapher/GraphStyle.hxx | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'grapher/GraphStyle.hxx')

diff --git a/grapher/GraphStyle.hxx b/grapher/GraphStyle.hxx
index 9625f451..ce75d698 100644
--- a/grapher/GraphStyle.hxx
+++ b/grapher/GraphStyle.hxx
@@ -48,6 +48,10 @@ namespace systemtap
   public:
     void draw(std::tr1::shared_ptr<GraphDataBase> graphData,
               Graph* graph, Cairo::RefPtr<Cairo::Context> cr);
+    virtual ssize_t dataIndexAtPoint(double x, double y,
+                                     std::tr1::shared_ptr<GraphDataBase>
+                                     graphData,
+                                     std::tr1::shared_ptr<Graph> graph);
     static GraphStyleEvent instance;
   };  
 }
-- 
cgit