Draw multiple graphs

* grapher/Graph.cxx (Graph constructor): Initialize graph dimensions.
(draw): Don't clear the drawing area.
* grapher/GraphWidget.hxx (GraphWidget): Add dimensions and
on_size_request() method.
* grapher/GraphWidget.cxx (GraphWidget constructor): Initialize
dimensions.
(addGraph): New method.
(on_size_request): New method to pass widget's size to parent widgets
* grapher/grapher.cxx (GrapherWindow constructor): add "add graph"
action.
(addGraph): New method.

1 files changed, 10 insertions, 0 deletions

diff --git a/grapher/grapher.cxx b/grapher/grapher.cxx
index 95ac232d..ad7023f2 100644
--- a/grapher/grapher.cxx
+++ b/grapher/grapher.cxx
@@ -32,6 +32,7 @@ public:
   GraphWidget w;
 protected:
   virtual void on_menu_file_quit();
+  void addGraph();
   // menu support
   Glib::RefPtr<Gtk::UIManager> m_refUIManager;
   Glib::RefPtr<Gtk::ActionGroup> m_refActionGroup;
@@ -48,6 +49,8 @@ GrapherWindow::GrapherWindow()
   m_refActionGroup = Gtk::ActionGroup::create();
   //File menu:
   m_refActionGroup->add(Gtk::Action::create("FileMenu", "File"));
+  m_refActionGroup->add(Gtk::Action::create("AddGraph", "Add graph"),
+                        sigc::mem_fun(*this, &GrapherWindow::addGraph));
   m_refActionGroup->add(Gtk::Action::create("FileQuit", Gtk::Stock::QUIT),
                         sigc::mem_fun(*this, &GrapherWindow::on_menu_file_quit));
   m_refUIManager = Gtk::UIManager::create();
@@ -59,6 +62,7 @@ GrapherWindow::GrapherWindow()
     "<ui>"
     "  <menubar name='MenuBar'>"
     "    <menu action='FileMenu'>"
+    "      <menuitem action='AddGraph'/>"    
     "      <menuitem action='FileQuit'/>"
     "    </menu>"
     "  </menubar>"
@@ -136,3 +140,9 @@ int main(int argc, char** argv)
      ;
    return 0;
 }
+
+void GrapherWindow::addGraph()
+{
+  w.addGraph();
+  
+}