Wrapped TimelineBody::track in a scoped_ptr

src/gui/gtk-lumiera.hpp

@@ -35,6 +35,7 @@
 #include <boost/optional.hpp>
 #include <boost/shared_ptr.hpp>
 #include <boost/weak_ptr.hpp>
+#include <boost/scoped_ptr.hpp>
 #include "lib/util.hpp"
 
 extern "C" {

src/gui/widgets/timeline/timeline-body.cpp

@@ -58,42 +58,36 @@ TimelineBody::TimelineBody(TimelineWidget &timeline_widget) :
 
 TimelineBody::~TimelineBody()
 {
-  REQUIRE(tool != NULL);
-  if(tool != NULL)
-    delete tool;
+  WARN_IF(!tool, gui, "An invalid tool pointer is unexpected here");
 }
 
 ToolType
 TimelineBody::get_tool() const
 {
-  REQUIRE(tool != NULL);
-  if(tool != NULL)
-    return tool->get_type();
-  return gui::widgets::timeline::None;
+  REQUIRE(tool);
+  return tool->get_type();
 }
   
 void
 TimelineBody::set_tool(timeline::ToolType tool_type)
 {  
   // Tidy up old tool
-  if(tool != NULL)
+  if(tool)
     {
       // Do we need to change tools?
       if(tool->get_type() == tool_type)
         return;
-        
-      delete tool;
     }
   
   // Create the new tool
   switch(tool_type)
     {
     case timeline::Arrow:
-      tool = new ArrowTool(*this);
+      tool.reset(new ArrowTool(*this));
       break;
       
     case timeline::IBeam:
-      tool = new IBeamTool(*this);
+      tool.reset(new IBeamTool(*this));
       break;
       
     default:

src/gui/widgets/timeline/timeline-body.hpp

@@ -160,7 +160,7 @@ private:
     Shift
   };
   
-  timeline::Tool *tool;
+  boost::scoped_ptr<timeline::Tool> tool;
   double mouseDownX, mouseDownY;
   
   // Scroll State