- First experiment with pango markup on the tree widget: it looks odd but it works!

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@935 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/schedulables_tree_widget.cc

@@ -31,6 +31,8 @@
 #include <iostream>
 #include <sstream>
 
+#include <glibmm/markup.h>
+
 #include <gtk/gtk.h>
 #include <gtkmm/entry.h>
 #include <gtkmm/spinbutton.h>
@@ -41,6 +43,12 @@ using namespace Gtk;
 using namespace Glib;
 using Gnome::Glade::Xml;
 
+PropertyProxy_Base
+SchedulablesTreeWidget::CellRendererTextMarkup::_property_renderable()
+{
+  return Glib::PropertyProxy_Base(this, "markup");
+}
+
 SchedulablesTreeWidget::SchedulablesTreeWidget() :
   _add_process_dialog_glade(Xml::create(GLADEDIR "/add-process-dialog.glade")),
   _add_thread_dialog_glade(Xml::create(GLADEDIR "/add-thread-dialog.glade")),
@@ -54,10 +62,13 @@ SchedulablesTreeWidget::SchedulablesTreeWidget() :
   
   set_model(_model);
 
-  append_column("schedulables", _main_column);
+  //append_column("schedulables", _main_column);
   //invisible
   //  append_column("handles", _types_column);
   //  append_column("handles", _handles_column);
+  int idx = append_column("schedulables", _cell_renderer) - 1;
+  Gtk::TreeViewColumn* tvc = get_column(idx);
+  tvc->set_cell_data_func(_cell_renderer, sigc::mem_fun(*this, &SchedulablesTreeWidget::_on_cell_name_data));
   
 /** DIALOGS **/
   _add_process_dialog_glade->get_widget("AddProcessDialog", _add_process_dialog);
@@ -120,11 +131,18 @@ SchedulablesTreeWidget::get_selected()
 {
   TreeModel::iterator sel = get_selection()->get_selected();
   
-  if(!sel)
+  return get_row_handle_as<T>(sel);
+}
+
+template <typename T>
+T*
+SchedulablesTreeWidget::get_row_handle_as(const Gtk::TreeModel::iterator& row)
+{
+  if(!row)
     return NULL;
   
-  const void* p_handle = (*sel)[_handles_column];
-  HandleType type = (*sel)[_types_column];
+  const void* p_handle = (*row)[_handles_column];
+  HandleType type = (*row)[_types_column];
 
   if(!check_type<T>(type))
     return NULL;
@@ -137,12 +155,19 @@ SchedulablesTreeWidget::get_selection_type()
 {
   TreeModel::iterator sel = get_selection()->get_selected();
 
-  if(!sel)
+  return get_row_type(sel);
+}
+
+SchedulablesTreeWidget::HandleType
+SchedulablesTreeWidget::get_row_type(const TreeModel::iterator& row)
+{
+  if(!row)
     return htype_undefined;
   else
-    return (*sel)[_types_column];
+    return (*row)[_types_column];
 }
 
+
 bool 
 SchedulablesTreeWidget::on_button_press_event(GdkEventButton* event)
 {
@@ -406,3 +431,64 @@ SchedulablesTreeWidget::_on_remove_subrequest()
     Simulation::get_instance().get_history().remove(owner);
 }
 
+void 
+SchedulablesTreeWidget::_on_cell_name_data(Gtk::CellRenderer* cr, 
+                                           const Gtk::TreeModel::iterator& it)
+{
+  CellRendererTextMarkup& crtm = reinterpret_cast<CellRendererTextMarkup&>(*cr);
+
+  ustring marked_up;
+
+  switch(get_row_type(it))
+  {
+  case htype_process:
+    marked_up = markup_process(*get_row_handle_as<Process>(it));
+    break;
+  default:
+    marked_up = "<small>";
+    marked_up += Markup::escape_text(it->get_value(_main_column));
+    marked_up += "</small>";
+  }
+  
+  crtm.property_markup() = marked_up;
+}
+
+ustring
+SchedulablesTreeWidget::markup_process(const Process& p)
+{
+  using std::ostringstream;
+  using std::endl;
+  
+  ustring color;
+  
+  switch(p.get_state())
+  {
+  case Process::state_running:
+    color = "green";
+    break;
+  case Process::state_ready:
+    color = "yellow";
+    break;
+  case Process::state_blocked:
+    color = "red";
+    break;
+  case Process::state_terminated:
+    color = "grey";
+    break;
+  case Process::state_future:
+    color = "LightSeaGreen";
+    break;
+  }
+
+  ostringstream oss;
+
+  oss << "<b>" << Markup::escape_text(p.get_name()) << 
+    "</b> / arrived at: " << p.get_arrival_time() << 
+    " / base priority: " << p.get_base_priority() << endl;
+  oss << "<small>elapsed: " << p.get_elapsed_time() << "</small>" << endl;
+  oss << "<small>priority: " << p.get_current_priority() << "</small>";
+
+  // TODO I'm unable to set foreground color, why?
+  return ustring("<span background=\"") + color + "\">" + oss.str() + "</span>";
+}
+

src/schedulables_tree_widget.hh

@@ -54,8 +54,7 @@ namespace sgpem
 
     virtual void update(const History& history);
     
-    bool on_button_press_event(GdkEventButton* event);
-
+    virtual bool on_button_press_event(GdkEventButton* event);
 
   private:
     enum HandleType
@@ -67,12 +66,23 @@ namespace sgpem
       htype_undefined
     };
 
+    class CellRendererTextMarkup : public Gtk::CellRendererText
+    {
+      public:
+	Glib::PropertyProxy_Base _property_renderable();
+    };
+
     template <typename T>
     bool check_type(HandleType type);
     
     template <typename T>
     T* get_selected();
+
+    template <typename T>
+    T* get_row_handle_as(const Gtk::TreeModel::iterator& row);
+
     HandleType get_selection_type();
+    HandleType get_row_type(const Gtk::TreeModel::iterator& row);
 
     void _on_add_process();
     void _on_add_thread();
@@ -83,6 +93,11 @@ namespace sgpem
     void _on_remove_request();
     void _on_remove_subrequest();
     
+    void _on_cell_name_data(Gtk::CellRenderer* cr, 
+                            const Gtk::TreeModel::iterator& it);
+    
+    Glib::ustring markup_process(const Process& p);
+    
     Glib::RefPtr<Gtk::TreeStore> _model;
     Gtk::TreeModelColumnRecord _columns;
     Gtk::TreeModelColumn<Glib::ustring> _main_column;
@@ -95,6 +110,7 @@ namespace sgpem
     Gtk::Dialog* _add_process_dialog;
     Gtk::Dialog* _add_thread_dialog;
     AddRequestDialog* _add_request_dialog;
+    CellRendererTextMarkup _cell_renderer;
   };
 
 } //~ namespace sgpem

src/testsuite/test-simulation_widget.cc

@@ -488,7 +488,7 @@ void fillHistory(History &hist)
   Thread&   p1_t1 =  hist.add_thread(Glib::ustring("P1 - Thread 1"), p1, 14, 0, 2);
 
   // add a thread - name, parent, cpu time, arrival time, priority
-  // Thread&   p1_t2 =  hist.add_thread(Glib::ustring("P1 - Thread 2"), p1, 3, 0, 5);
+  Thread&   p1_t2 =  hist.add_thread(Glib::ustring("P1 - Thread 2"), p1, 8, 0, 5);
 
   // add a thread - name, parent, cpu time, arrival time, priority
   Thread&   p2_t1 =  hist.add_thread(Glib::ustring("P2 - Thread 1"), p2, 20, 0, 2);