1 files changed, 54 insertions, 0 deletions
diff --git a/grapher/GraphStyle.hxx b/grapher/GraphStyle.hxx
new file mode 100644
index 00000000..9625f451
--- /dev/null
+++ b/grapher/GraphStyle.hxx
@@ -0,0 +1,54 @@
+#ifndef SYSTEMTAP_GRAPHSTYLE_HXX
+#define SYSTEMTAP_GRAPHSTYLE_HXX 1
+#include <tr1/memory>
+
+#include <cairomm/context.h>
+
+namespace systemtap
+{
+  class GraphDataBase;
+  class Graph;
+
+  class GraphStyle
+  {
+  public:
+    virtual void draw(std::tr1::shared_ptr<GraphDataBase> graphData,
+                      Graph* graph, Cairo::RefPtr<Cairo::Context> cr) = 0;
+    virtual ssize_t dataIndexAtPoint(double x, double y,
+                                     std::tr1::shared_ptr<GraphDataBase>
+                                     graphData,
+                                     std::tr1::shared_ptr<Graph> graph)
+    {
+      return -1;
+    }
+  };
+
+  class GraphStyleBar : public GraphStyle
+  {
+  public:
+    void draw(std::tr1::shared_ptr<GraphDataBase> graphData,
+              Graph* graph, Cairo::RefPtr<Cairo::Context> cr);
+    
+    static GraphStyleBar instance;
+    ssize_t dataIndexAtPoint(double x, double y,
+                             std::tr1::shared_ptr<GraphDataBase> graphData,
+                             std::tr1::shared_ptr<Graph> graph);
+  };
+
+  class GraphStyleDot : public GraphStyle
+  {
+  public:
+    void draw(std::tr1::shared_ptr<GraphDataBase> graphData,
+              Graph* graph, Cairo::RefPtr<Cairo::Context> cr);
+    static GraphStyleDot instance;
+  };
+
+  class GraphStyleEvent : public GraphStyle
+  {
+  public:
+    void draw(std::tr1::shared_ptr<GraphDataBase> graphData,
+              Graph* graph, Cairo::RefPtr<Cairo::Context> cr);
+    static GraphStyleEvent instance;
+  };  
+}
+#endif