retabulation 2 spaces
[lttv.git] / ltt / branches / poly / lttv / modules / guiControlFlow / Drawing.c
index 0d666ceefa6bc6b1900a0a651ed802f7acea1b2d..9242cbe15e5ae84dc48c20aad69b114fa2c41f32 100644 (file)
 //FIXME Colors will need to be dynamic. Graphic context part not done so far.
 typedef enum 
 {
-       RED,
-       GREEN,
-       BLUE,
-       WHITE,
-       BLACK
+  RED,
+  GREEN,
+  BLUE,
+  WHITE,
+  BLACK
 
 } ControlFlowColors;
 
 /* Vector of unallocated colors */
 static GdkColor CF_Colors [] = 
 {
-       { 0, 0xffff, 0x0000, 0x0000 },  // RED
-       { 0, 0x0000, 0xffff, 0x0000 },  // GREEN
-       { 0, 0x0000, 0x0000, 0xffff },  // BLUE
-       { 0, 0xffff, 0xffff, 0xffff },  // WHITE
-       { 0, 0x0000, 0x0000, 0x0000 }   // BLACK
+  { 0, 0xffff, 0x0000, 0x0000 },  // RED
+  { 0, 0x0000, 0xffff, 0x0000 },  // GREEN
+  { 0, 0x0000, 0x0000, 0xffff },  // BLUE
+  { 0, 0xffff, 0xffff, 0xffff },  // WHITE
+  { 0, 0x0000, 0x0000, 0x0000 } // BLACK
 };
 
 
@@ -46,97 +46,97 @@ static GdkColor CF_Colors [] =
  * erase drawing already present (SAFETY).
  */
 void drawing_data_request(Drawing_t *Drawing,
-                       GdkPixmap **Pixmap,
-                       gint x, gint y,
-                 gint width,
-                       gint height)
+      GdkPixmap **Pixmap,
+      gint x, gint y,
+      gint width,
+      gint height)
 {
   if(width < 0) return ;
   if(height < 0) return ;
-       ControlFlowData *control_flow_data =
-                       (ControlFlowData*)g_object_get_data(
-                                                               G_OBJECT(
-                                                                               Drawing->Drawing_Area_V),
-                                                               "Control_Flow_Data");
-
-       LttTime start, end;
-       LttTime window_end = ltt_time_add(control_flow_data->Time_Window.time_width,
-                                                                                               control_flow_data->Time_Window.start_time);
-
-       g_critical("req : window_end : %u, %u", window_end.tv_sec, 
-                                                                                                                                                       window_end.tv_nsec);
-
-       g_critical("req : time width : %u, %u", control_flow_data->Time_Window.time_width.tv_sec, 
-                                                                                                                               control_flow_data->Time_Window.time_width.tv_nsec);
-       
-       g_critical("x is : %i, x+width is : %i", x, x+width);
-
-       convert_pixels_to_time(Drawing->Drawing_Area_V->allocation.width, x,
-                               &control_flow_data->Time_Window.start_time,
-                               &window_end,
-                               &start);
-
-       convert_pixels_to_time(Drawing->Drawing_Area_V->allocation.width, x + width,
-                               &control_flow_data->Time_Window.start_time,
-                               &window_end,
-                               &end);
-       
-       LttvTracesetContext * tsc =
-                               get_traceset_context(control_flow_data->Parent_Window);
-       
+  ControlFlowData *control_flow_data =
+      (ControlFlowData*)g_object_get_data(
+                G_OBJECT(
+                    Drawing->Drawing_Area_V),
+                "Control_Flow_Data");
+
+  LttTime start, end;
+  LttTime window_end = ltt_time_add(control_flow_data->Time_Window.time_width,
+                        control_flow_data->Time_Window.start_time);
+
+  g_critical("req : window_end : %u, %u", window_end.tv_sec, 
+                                      window_end.tv_nsec);
+
+  g_critical("req : time width : %u, %u", control_flow_data->Time_Window.time_width.tv_sec, 
+                                control_flow_data->Time_Window.time_width.tv_nsec);
+  
+  g_critical("x is : %i, x+width is : %i", x, x+width);
+
+  convert_pixels_to_time(Drawing->Drawing_Area_V->allocation.width, x,
+        &control_flow_data->Time_Window.start_time,
+        &window_end,
+        &start);
+
+  convert_pixels_to_time(Drawing->Drawing_Area_V->allocation.width, x + width,
+        &control_flow_data->Time_Window.start_time,
+        &window_end,
+        &end);
+  
+  LttvTracesetContext * tsc =
+        get_traceset_context(control_flow_data->Parent_Window);
+  
     //send_test_process(
-       //guicontrolflow_get_process_list(Drawing->Control_Flow_Data),
-       //Drawing);
+  //guicontrolflow_get_process_list(Drawing->Control_Flow_Data),
+  //Drawing);
   //send_test_drawing(
-       //guicontrolflow_get_process_list(Drawing->Control_Flow_Data),
-       //Drawing, *Pixmap, x, y, width, height);
-  
-       // Let's call processTrace() !!
-       EventRequest event_request; // Variable freed at the end of the function.
-       event_request.Control_Flow_Data = control_flow_data;
-       event_request.time_begin = start;
-       event_request.time_end = end;
-       event_request.x_begin = x;
-       event_request.x_end = x+width;
-
-       g_critical("req : start : %u, %u", event_request.time_begin.tv_sec, 
-                                                                                                                                                       event_request.time_begin.tv_nsec);
-
-       g_critical("req : end : %u, %u", event_request.time_end.tv_sec, 
-                                                                                                                                                       event_request.time_end.tv_nsec);
-       
-       LttvHooks *event = lttv_hooks_new();
-       LttvHooks *after_event = lttv_hooks_new();
-       LttvHooks *after_traceset = lttv_hooks_new();
-       lttv_hooks_add(after_traceset, after_data_request, &event_request);
-       lttv_hooks_add(event, draw_event_hook, &event_request);
-       //Modified by xiangxiu: state update hooks are added by the main window
-       //state_add_event_hooks_api(control_flow_data->Parent_Window);
-       lttv_hooks_add(after_event, draw_after_hook, &event_request);
-
-       lttv_process_traceset_seek_time(tsc, start);
-       // FIXME : would like to place the after_traceset hook after the traceset,
-       // but the traceset context state is not valid anymore.
-       lttv_traceset_context_add_hooks(tsc,
-       //              NULL, after_traceset, NULL, NULL, NULL, NULL,
-                       NULL, NULL, NULL, NULL, NULL, NULL,
-                       NULL, after_traceset, NULL, event, after_event);
-       lttv_process_traceset(tsc, end, G_MAXULONG);
-       //after_data_request((void*)&event_request,(void*)tsc);
-       lttv_traceset_context_remove_hooks(tsc,
-                       //NULL, after_traceset, NULL, NULL, NULL, NULL,
-                       NULL, NULL, NULL, NULL, NULL, NULL,
-                       NULL, after_traceset, NULL, event, after_event);
-       //Modified by xiangxiu: state update hooks are removed by the main window
-       //state_remove_event_hooks_api(control_flow_data->Parent_Window);
-
-       lttv_hooks_destroy(after_traceset);
-       lttv_hooks_destroy(event);
-       lttv_hooks_destroy(after_event);
-
-       
+  //guicontrolflow_get_process_list(Drawing->Control_Flow_Data),
+  //Drawing, *Pixmap, x, y, width, height);
+  
+  // Let's call processTrace() !!
+  EventRequest event_request; // Variable freed at the end of the function.
+  event_request.Control_Flow_Data = control_flow_data;
+  event_request.time_begin = start;
+  event_request.time_end = end;
+  event_request.x_begin = x;
+  event_request.x_end = x+width;
+
+  g_critical("req : start : %u, %u", event_request.time_begin.tv_sec, 
+                                      event_request.time_begin.tv_nsec);
+
+  g_critical("req : end : %u, %u", event_request.time_end.tv_sec, 
+                                      event_request.time_end.tv_nsec);
+  
+  LttvHooks *event = lttv_hooks_new();
+  LttvHooks *after_event = lttv_hooks_new();
+  LttvHooks *after_traceset = lttv_hooks_new();
+  lttv_hooks_add(after_traceset, after_data_request, &event_request);
+  lttv_hooks_add(event, draw_event_hook, &event_request);
+  //Modified by xiangxiu: state update hooks are added by the main window
+  //state_add_event_hooks_api(control_flow_data->Parent_Window);
+  lttv_hooks_add(after_event, draw_after_hook, &event_request);
+
+  lttv_process_traceset_seek_time(tsc, start);
+  // FIXME : would like to place the after_traceset hook after the traceset,
+  // but the traceset context state is not valid anymore.
+  lttv_traceset_context_add_hooks(tsc,
+  //    NULL, after_traceset, NULL, NULL, NULL, NULL,
+      NULL, NULL, NULL, NULL, NULL, NULL,
+      NULL, after_traceset, NULL, event, after_event);
+  lttv_process_traceset(tsc, end, G_MAXULONG);
+  //after_data_request((void*)&event_request,(void*)tsc);
+  lttv_traceset_context_remove_hooks(tsc,
+      //NULL, after_traceset, NULL, NULL, NULL, NULL,
+      NULL, NULL, NULL, NULL, NULL, NULL,
+      NULL, after_traceset, NULL, event, after_event);
+  //Modified by xiangxiu: state update hooks are removed by the main window
+  //state_remove_event_hooks_api(control_flow_data->Parent_Window);
+
+  lttv_hooks_destroy(after_traceset);
+  lttv_hooks_destroy(event);
+  lttv_hooks_destroy(after_event);
+
+  
 }
-                     
+          
 /* Callbacks */
 
 
@@ -146,68 +146,68 @@ void drawing_data_request(Drawing_t *Drawing,
  */
 static gboolean
 configure_event( GtkWidget *widget, GdkEventConfigure *event, 
-               gpointer user_data)
+    gpointer user_data)
 {
   Drawing_t *Drawing = (Drawing_t*)user_data;
 
 
-       /* First, get the new time interval of the main window */
-       /* we assume (see documentation) that the main window
-        * has updated the time interval before this configure gets
-        * executed.
-        */
-       get_time_window(Drawing->Control_Flow_Data->Parent_Window,
-                               &Drawing->Control_Flow_Data->Time_Window);
-       
+  /* First, get the new time interval of the main window */
+  /* we assume (see documentation) that the main window
+   * has updated the time interval before this configure gets
+   * executed.
+   */
+  get_time_window(Drawing->Control_Flow_Data->Parent_Window,
+        &Drawing->Control_Flow_Data->Time_Window);
+  
   /* New Pixmap, size of the configure event */
   //GdkPixmap *Pixmap = gdk_pixmap_new(widget->window,
-       //                widget->allocation.width + SAFETY,
-       //                widget->allocation.height + SAFETY,
-       //                -1);
-       
+  //      widget->allocation.width + SAFETY,
+  //      widget->allocation.height + SAFETY,
+  //      -1);
+  
   g_critical("drawing configure event");
-       g_critical("New draw size : %i by %i",widget->allocation.width, widget->allocation.height);
-       
-               
-       if (Drawing->Pixmap)
+  g_critical("New draw size : %i by %i",widget->allocation.width, widget->allocation.height);
+  
+    
+  if (Drawing->Pixmap)
     gdk_pixmap_unref(Drawing->Pixmap);
-       
+  
   /* If no old Pixmap present */
   //if(Drawing->Pixmap == NULL)
   {
-       Drawing->Pixmap = gdk_pixmap_new(
-               widget->window,
-               widget->allocation.width + SAFETY,
-               widget->allocation.height + SAFETY,
-               //ProcessList_get_height
-               // (GuiControlFlow_get_Process_List(Drawing->Control_Flow_Data)),
-               -1);
-               Drawing->width = widget->allocation.width;
-               Drawing->height = widget->allocation.height;
-               
-
-               // Clear the image
-         gdk_draw_rectangle (Drawing->Pixmap,
-                     widget->style->white_gc,
-                     TRUE,
-                     0, 0,
-                     widget->allocation.width+SAFETY,
-                     widget->allocation.height+SAFETY);
-
-               //g_info("init data request");
-
-
-               /* Initial data request */
-               // Do not need to ask for data of 1 pixel : not synchronized with
-               // main window time at this moment.
-               drawing_data_request(Drawing, &Drawing->Pixmap, 0, 0,
-                       widget->allocation.width,
-                               widget->allocation.height);
-                                     
-         Drawing->width = widget->allocation.width;
-               Drawing->height = widget->allocation.height;
-
-       return TRUE;
+    Drawing->Pixmap = gdk_pixmap_new(
+    widget->window,
+    widget->allocation.width + SAFETY,
+    widget->allocation.height + SAFETY,
+    //ProcessList_get_height
+    // (GuiControlFlow_get_Process_List(Drawing->Control_Flow_Data)),
+    -1);
+    Drawing->width = widget->allocation.width;
+    Drawing->height = widget->allocation.height;
+    
+
+    // Clear the image
+    gdk_draw_rectangle (Drawing->Pixmap,
+          widget->style->white_gc,
+          TRUE,
+          0, 0,
+          widget->allocation.width+SAFETY,
+          widget->allocation.height+SAFETY);
+
+    //g_info("init data request");
+
+
+    /* Initial data request */
+    // Do not need to ask for data of 1 pixel : not synchronized with
+    // main window time at this moment.
+    drawing_data_request(Drawing, &Drawing->Pixmap, 0, 0,
+        widget->allocation.width,
+        widget->allocation.height);
+                          
+    Drawing->width = widget->allocation.width;
+    Drawing->height = widget->allocation.height;
+
+    return TRUE;
 
 
 
@@ -215,55 +215,55 @@ configure_event( GtkWidget *widget, GdkEventConfigure *event,
 #ifdef NOTUSE
 //  /* Draw empty background */ 
 //  gdk_draw_rectangle (Pixmap,
-//                   widget->style->black_gc,
-//                   TRUE,
-//                   0, 0,
-//                   widget->allocation.width,
-//                   widget->allocation.height);
-  
-       /* Copy old data to new pixmap */
-       gdk_draw_drawable (Pixmap,
-         widget->style->white_gc,
-         Drawing->Pixmap,
-         0, 0,
-         0, 0,
-         -1, -1);
-               
+//          widget->style->black_gc,
+//          TRUE,
+//          0, 0,
+//          widget->allocation.width,
+//          widget->allocation.height);
+  
+  /* Copy old data to new pixmap */
+  gdk_draw_drawable (Pixmap,
+    widget->style->white_gc,
+    Drawing->Pixmap,
+    0, 0,
+    0, 0,
+    -1, -1);
+    
   if (Drawing->Pixmap)
     gdk_pixmap_unref(Drawing->Pixmap);
 
   Drawing->Pixmap = Pixmap;
-               
-       // Clear the bottom part of the image (SAFETY)
+    
+  // Clear the bottom part of the image (SAFETY)
   gdk_draw_rectangle (Pixmap,
-                     widget->style->white_gc,
-                     TRUE,
-                     0, Drawing->height+SAFETY,
-                     Drawing->width+SAFETY,    // do not overlap
-                     (widget->allocation.height) - Drawing->height);
+          widget->style->white_gc,
+          TRUE,
+          0, Drawing->height+SAFETY,
+          Drawing->width+SAFETY,  // do not overlap
+          (widget->allocation.height) - Drawing->height);
 
-       // Clear the right part of the image (SAFETY)
+  // Clear the right part of the image (SAFETY)
   gdk_draw_rectangle (Pixmap,
-                     widget->style->white_gc,
-                     TRUE,
-                     Drawing->width+SAFETY, 0,
-                     (widget->allocation.width) - Drawing->width,      // do not overlap
-                     Drawing->height+SAFETY);
-
-       /* Clear the backgound for data request, but not SAFETY */
-       gdk_draw_rectangle (Pixmap,
-                                       Drawing->Drawing_Area_V->style->white_gc,
-                     TRUE,
-                     Drawing->width + SAFETY, 0,
-                     widget->allocation.width - Drawing->width,        // do not overlap
-                     widget->allocation.height+SAFETY);
+          widget->style->white_gc,
+          TRUE,
+          Drawing->width+SAFETY, 0,
+          (widget->allocation.width) - Drawing->width,  // do not overlap
+          Drawing->height+SAFETY);
+
+  /* Clear the backgound for data request, but not SAFETY */
+  gdk_draw_rectangle (Pixmap,
+          Drawing->Drawing_Area_V->style->white_gc,
+          TRUE,
+          Drawing->width + SAFETY, 0,
+          widget->allocation.width - Drawing->width,  // do not overlap
+          widget->allocation.height+SAFETY);
 
   /* Request data for missing space */
-       g_info("missing data request");
+  g_info("missing data request");
   drawing_data_request(Drawing, &Pixmap, Drawing->width, 0,
-               widget->allocation.width - Drawing->width,
-                       widget->allocation.height);
-                                     
+      widget->allocation.width - Drawing->width,
+      widget->allocation.height);
+                          
   Drawing->width = widget->allocation.width;
   Drawing->height = widget->allocation.height;
 
@@ -277,45 +277,45 @@ static gboolean
 expose_event( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
 {
   Drawing_t *Drawing = (Drawing_t*)user_data;
-       ControlFlowData *control_flow_data =
-                       (ControlFlowData*)g_object_get_data(
-                                                               G_OBJECT(widget),
-                                                               "Control_Flow_Data");
+  ControlFlowData *control_flow_data =
+      (ControlFlowData*)g_object_get_data(
+                G_OBJECT(widget),
+                "Control_Flow_Data");
 
   g_critical("drawing expose event");
-       
-       guint x=0;
-       LttTime* Current_Time = 
-                       guicontrolflow_get_current_time(control_flow_data);
-
-       LttTime window_end = ltt_time_add(control_flow_data->Time_Window.time_width,
-                                                                                       control_flow_data->Time_Window.start_time);
-
-       convert_time_to_pixels(
-                               control_flow_data->Time_Window.start_time,
-                               window_end,
-                               *Current_Time,
-                               widget->allocation.width,
-                               &x);
-       
+  
+  guint x=0;
+  LttTime* Current_Time = 
+      guicontrolflow_get_current_time(control_flow_data);
+
+  LttTime window_end = ltt_time_add(control_flow_data->Time_Window.time_width,
+                      control_flow_data->Time_Window.start_time);
+
+  convert_time_to_pixels(
+        control_flow_data->Time_Window.start_time,
+        window_end,
+        *Current_Time,
+        widget->allocation.width,
+        &x);
+  
   gdk_draw_pixmap(widget->window,
-                 widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
-                 Drawing->Pixmap,
-                 event->area.x, event->area.y,
-                 event->area.x, event->area.y,
-                 event->area.width, event->area.height);
-
-       if(x >= event->area.x && x <= event->area.x+event->area.width)
-       {
-               GdkGC *gc = gdk_gc_new(control_flow_data->Drawing->Pixmap);
-               gdk_gc_copy(gc, widget->style->black_gc);
-               
-               drawing_draw_line(NULL, widget->window,
-                                                                       x, event->area.y,
-                                                                       x, event->area.y+event->area.height,
-                                                                       gc);
-               gdk_gc_unref(gc);
-       }
+      widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
+      Drawing->Pixmap,
+      event->area.x, event->area.y,
+      event->area.x, event->area.y,
+      event->area.width, event->area.height);
+
+  if(x >= event->area.x && x <= event->area.x+event->area.width)
+  {
+    GdkGC *gc = gdk_gc_new(control_flow_data->Drawing->Pixmap);
+    gdk_gc_copy(gc, widget->style->black_gc);
+    
+    drawing_draw_line(NULL, widget->window,
+                  x, event->area.y,
+                  x, event->area.y+event->area.height,
+                  gc);
+    gdk_gc_unref(gc);
+  }
   return FALSE;
 }
 
@@ -323,35 +323,35 @@ expose_event( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
 static gboolean
 button_press_event( GtkWidget *widget, GdkEventButton *event, gpointer user_data )
 {
-       ControlFlowData *control_flow_data =
-                       (ControlFlowData*)g_object_get_data(
-                                                               G_OBJECT(widget),
-                                                               "Control_Flow_Data");
-       Drawing_t *Drawing = control_flow_data->Drawing;
+  ControlFlowData *control_flow_data =
+      (ControlFlowData*)g_object_get_data(
+                G_OBJECT(widget),
+                "Control_Flow_Data");
+  Drawing_t *Drawing = control_flow_data->Drawing;
 
 
-       g_critical("click");
-       if(event->button == 1)
-       {
-               LttTime time;
+  g_critical("click");
+  if(event->button == 1)
+  {
+    LttTime time;
 
-               LttTime window_end = ltt_time_add(control_flow_data->Time_Window.time_width,
-                                                                                               control_flow_data->Time_Window.start_time);
+    LttTime window_end = ltt_time_add(control_flow_data->Time_Window.time_width,
+                        control_flow_data->Time_Window.start_time);
 
 
-               /* left mouse button click */
-               g_critical("x click is : %f", event->x);
+    /* left mouse button click */
+    g_critical("x click is : %f", event->x);
 
-               convert_pixels_to_time(widget->allocation.width, (guint)event->x,
-                               &control_flow_data->Time_Window.start_time,
-                               &window_end,
-                               &time);
+    convert_pixels_to_time(widget->allocation.width, (guint)event->x,
+        &control_flow_data->Time_Window.start_time,
+        &window_end,
+        &time);
 
-               set_current_time(control_flow_data->Parent_Window, &time);
+    set_current_time(control_flow_data->Parent_Window, &time);
 
-       }
-       
-       return FALSE;
+  }
+  
+  return FALSE;
 }
 
 
@@ -359,78 +359,78 @@ button_press_event( GtkWidget *widget, GdkEventButton *event, gpointer user_data
 
 Drawing_t *drawing_construct(ControlFlowData *Control_Flow_Data)
 {
-       Drawing_t *Drawing = g_new(Drawing_t, 1);
-               
-       Drawing->Drawing_Area_V = gtk_drawing_area_new ();
-       Drawing->Control_Flow_Data = Control_Flow_Data;
-
-       Drawing->pango_layout =
-               gtk_widget_create_pango_layout(Drawing->Drawing_Area_V, NULL);
-       
-       //gtk_widget_set_size_request(Drawing->Drawing_Area_V->window, 50, 50);
-       g_object_set_data_full(
-                       G_OBJECT(Drawing->Drawing_Area_V),
-                       "Link_Drawing_Data",
-                       Drawing,
-                       (GDestroyNotify)drawing_destroy);
-
-       //gtk_widget_modify_bg( Drawing->Drawing_Area_V,
-       //                      GTK_STATE_NORMAL,
-       //                      &CF_Colors[BLACK]);
-       
-       //gdk_window_get_geometry(Drawing->Drawing_Area_V->window,
-       //              NULL, NULL,
-       //              &(Drawing->width),
-       //              &(Drawing->height),
-       //              -1);
-       
-       //Drawing->Pixmap = gdk_pixmap_new(
-       //              Drawing->Drawing_Area_V->window,
-       //              Drawing->width,
-       //              Drawing->height,
-       //              Drawing->depth);
-       
-       Drawing->Pixmap = NULL;
-
-//     Drawing->Pixmap = gdk_pixmap_new(Drawing->Drawing_Area_V->window,
-//                       Drawing->Drawing_Area_V->allocation.width,
-//                       Drawing->Drawing_Area_V->allocation.height,
-//                       -1);
-
-       gtk_widget_add_events(Drawing->Drawing_Area_V, GDK_BUTTON_PRESS_MASK);
-       
-       g_signal_connect (G_OBJECT(Drawing->Drawing_Area_V),
-                               "configure_event",
-                               G_CALLBACK (configure_event),
-                               (gpointer)Drawing);
-       
-       g_signal_connect (G_OBJECT(Drawing->Drawing_Area_V),
-                               "expose_event",
-                               G_CALLBACK (expose_event),
-                               (gpointer)Drawing);
-
-       g_signal_connect (G_OBJECT(Drawing->Drawing_Area_V),
-                               "button-press-event",
-                               G_CALLBACK (button_press_event),
-                               (gpointer)Drawing);
-
-       
-       return Drawing;
+  Drawing_t *Drawing = g_new(Drawing_t, 1);
+    
+  Drawing->Drawing_Area_V = gtk_drawing_area_new ();
+  Drawing->Control_Flow_Data = Control_Flow_Data;
+
+  Drawing->pango_layout =
+    gtk_widget_create_pango_layout(Drawing->Drawing_Area_V, NULL);
+  
+  //gtk_widget_set_size_request(Drawing->Drawing_Area_V->window, 50, 50);
+  g_object_set_data_full(
+      G_OBJECT(Drawing->Drawing_Area_V),
+      "Link_Drawing_Data",
+      Drawing,
+      (GDestroyNotify)drawing_destroy);
+
+  //gtk_widget_modify_bg( Drawing->Drawing_Area_V,
+  //      GTK_STATE_NORMAL,
+  //      &CF_Colors[BLACK]);
+  
+  //gdk_window_get_geometry(Drawing->Drawing_Area_V->window,
+  //    NULL, NULL,
+  //    &(Drawing->width),
+  //    &(Drawing->height),
+  //    -1);
+  
+  //Drawing->Pixmap = gdk_pixmap_new(
+  //    Drawing->Drawing_Area_V->window,
+  //    Drawing->width,
+  //    Drawing->height,
+  //    Drawing->depth);
+  
+  Drawing->Pixmap = NULL;
+
+//  Drawing->Pixmap = gdk_pixmap_new(Drawing->Drawing_Area_V->window,
+//        Drawing->Drawing_Area_V->allocation.width,
+//        Drawing->Drawing_Area_V->allocation.height,
+//        -1);
+
+  gtk_widget_add_events(Drawing->Drawing_Area_V, GDK_BUTTON_PRESS_MASK);
+  
+  g_signal_connect (G_OBJECT(Drawing->Drawing_Area_V),
+        "configure_event",
+        G_CALLBACK (configure_event),
+        (gpointer)Drawing);
+  
+  g_signal_connect (G_OBJECT(Drawing->Drawing_Area_V),
+        "expose_event",
+        G_CALLBACK (expose_event),
+        (gpointer)Drawing);
+
+  g_signal_connect (G_OBJECT(Drawing->Drawing_Area_V),
+        "button-press-event",
+        G_CALLBACK (button_press_event),
+        (gpointer)Drawing);
+
+  
+  return Drawing;
 }
 
 void drawing_destroy(Drawing_t *Drawing)
 {
 
-       // Do not unref here, Drawing_t destroyed by it's widget.
-       //g_object_unref( G_OBJECT(Drawing->Drawing_Area_V));
-               
-       g_free(Drawing->pango_layout);
-       g_free(Drawing);
+  // Do not unref here, Drawing_t destroyed by it's widget.
+  //g_object_unref( G_OBJECT(Drawing->Drawing_Area_V));
+    
+  g_free(Drawing->pango_layout);
+  g_free(Drawing);
 }
 
 GtkWidget *drawing_get_widget(Drawing_t *Drawing)
 {
-       return Drawing->Drawing_Area_V;
+  return Drawing->Drawing_Area_V;
 }
 
 /* convert_pixels_to_time
@@ -438,77 +438,77 @@ GtkWidget *drawing_get_widget(Drawing_t *Drawing)
  * Convert from window pixel and time interval to an absolute time.
  */
 void convert_pixels_to_time(
-               gint width,
-               guint x,
-               LttTime *window_time_begin,
-               LttTime *window_time_end,
-               LttTime *time)
+    gint width,
+    guint x,
+    LttTime *window_time_begin,
+    LttTime *window_time_end,
+    LttTime *time)
 {
-       LttTime window_time_interval;
-       
-       window_time_interval = ltt_time_sub(*window_time_end, 
+  LttTime window_time_interval;
+  
+  window_time_interval = ltt_time_sub(*window_time_end, 
             *window_time_begin);
-       *time = ltt_time_mul(window_time_interval, (x/(float)width));
-       *time = ltt_time_add(*window_time_begin, *time);
+  *time = ltt_time_mul(window_time_interval, (x/(float)width));
+  *time = ltt_time_add(*window_time_begin, *time);
 }
 
 
 
 void convert_time_to_pixels(
-               LttTime window_time_begin,
-               LttTime window_time_end,
-               LttTime time,
-               int width,
-               guint *x)
+    LttTime window_time_begin,
+    LttTime window_time_end,
+    LttTime time,
+    int width,
+    guint *x)
 {
-       LttTime window_time_interval;
-       float interval_float, time_float;
-       
-       window_time_interval = ltt_time_sub(window_time_end,window_time_begin);
-       
-       time = ltt_time_sub(time, window_time_begin);
-       
-       interval_float = ltt_time_to_double(window_time_interval);
-       time_float = ltt_time_to_double(time);
-
-       *x = (guint)(time_float/interval_float * width);
-       
+  LttTime window_time_interval;
+  float interval_float, time_float;
+  
+  window_time_interval = ltt_time_sub(window_time_end,window_time_begin);
+  
+  time = ltt_time_sub(time, window_time_begin);
+  
+  interval_float = ltt_time_to_double(window_time_interval);
+  time_float = ltt_time_to_double(time);
+
+  *x = (guint)(time_float/interval_float * width);
+  
 }
 
-void drawing_refresh ( Drawing_t *Drawing,
-                       guint x, guint y,
-                       guint width, guint height)
+void drawing_refresh (  Drawing_t *Drawing,
+      guint x, guint y,
+      guint width, guint height)
 {
-       g_info("Drawing.c : drawing_refresh %u, %u, %u, %u", x, y, width, height);
-       GdkRectangle update_rect;
-
-       gdk_draw_drawable(
-               Drawing->Drawing_Area_V->window,
-               Drawing->Drawing_Area_V->
-                style->fg_gc[GTK_WIDGET_STATE (Drawing->Drawing_Area_V)],
-               GDK_DRAWABLE(Drawing->Pixmap),
-               x, y,
-               x, y,
-               width, height);
-
-       update_rect.x = 0 ;
-       update_rect.y = 0 ;
-       update_rect.width = Drawing->width;
-       update_rect.height = Drawing->height ;
-       gtk_widget_draw( Drawing->Drawing_Area_V, &update_rect);
+  g_info("Drawing.c : drawing_refresh %u, %u, %u, %u", x, y, width, height);
+  GdkRectangle update_rect;
+
+  gdk_draw_drawable(
+    Drawing->Drawing_Area_V->window,
+    Drawing->Drawing_Area_V->
+     style->fg_gc[GTK_WIDGET_STATE (Drawing->Drawing_Area_V)],
+    GDK_DRAWABLE(Drawing->Pixmap),
+    x, y,
+    x, y,
+    width, height);
+
+  update_rect.x = 0 ;
+  update_rect.y = 0 ;
+  update_rect.width = Drawing->width;
+  update_rect.height = Drawing->height ;
+  gtk_widget_draw( Drawing->Drawing_Area_V, &update_rect);
 
 }
 
 
-void drawing_draw_line(        Drawing_t *Drawing,
-                       GdkPixmap *Pixmap,
-                       guint x1, guint y1,
-                       guint x2, guint y2,
-                       GdkGC *GC)
+void drawing_draw_line( Drawing_t *Drawing,
+      GdkPixmap *Pixmap,
+      guint x1, guint y1,
+      guint x2, guint y2,
+      GdkGC *GC)
 {
-       gdk_draw_line (Pixmap,
-                       GC,
-                       x1, y1, x2, y2);
+  gdk_draw_line (Pixmap,
+      GC,
+      x1, y1, x2, y2);
 }
 
 
@@ -516,125 +516,125 @@ void drawing_draw_line( Drawing_t *Drawing,
 
 void drawing_resize(Drawing_t *Drawing, guint h, guint w)
 {
-       Drawing->height = h ;
-       Drawing->width = w ;
-
-       gtk_widget_set_size_request (   Drawing->Drawing_Area_V,
-                                       Drawing->width,
-                                       Drawing->height);
-       
-       
+  Drawing->height = h ;
+  Drawing->width = w ;
+
+  gtk_widget_set_size_request ( Drawing->Drawing_Area_V,
+          Drawing->width,
+          Drawing->height);
+  
+  
 }
 
 
 /* Insert a square corresponding to a new process in the list */
 /* Applies to whole Drawing->width */
 void drawing_insert_square(Drawing_t *Drawing,
-                               guint y,
-                               guint height)
+        guint y,
+        guint height)
 {
-       //GdkRectangle update_rect;
-
-       /* Allocate a new pixmap with new height */
-       GdkPixmap *Pixmap = gdk_pixmap_new(Drawing->Drawing_Area_V->window,
-                         Drawing->width + SAFETY,
-                         Drawing->height + height + SAFETY,
-                         -1);
-       
-       /* Copy the high region */
-       gdk_draw_drawable (Pixmap,
-               Drawing->Drawing_Area_V->style->black_gc,
-               Drawing->Pixmap,
-               0, 0,
-               0, 0,
-               Drawing->width + SAFETY, y);
+  //GdkRectangle update_rect;
 
+  /* Allocate a new pixmap with new height */
+  GdkPixmap *Pixmap = gdk_pixmap_new(Drawing->Drawing_Area_V->window,
+        Drawing->width + SAFETY,
+        Drawing->height + height + SAFETY,
+        -1);
+  
+  /* Copy the high region */
+  gdk_draw_drawable (Pixmap,
+    Drawing->Drawing_Area_V->style->black_gc,
+    Drawing->Pixmap,
+    0, 0,
+    0, 0,
+    Drawing->width + SAFETY, y);
 
 
 
-       /* add an empty square */
-       gdk_draw_rectangle (Pixmap,
-               Drawing->Drawing_Area_V->style->white_gc,
-               TRUE,
-               0, y,
-               Drawing->width + SAFETY,        // do not overlap
-               height);
 
+  /* add an empty square */
+  gdk_draw_rectangle (Pixmap,
+    Drawing->Drawing_Area_V->style->white_gc,
+    TRUE,
+    0, y,
+    Drawing->width + SAFETY,  // do not overlap
+    height);
 
 
-       /* copy the bottom of the region */
-       gdk_draw_drawable (Pixmap,
-               Drawing->Drawing_Area_V->style->black_gc,
-               Drawing->Pixmap,
-               0, y,
-               0, y + height,
-               Drawing->width+SAFETY, Drawing->height - y + SAFETY);
 
+  /* copy the bottom of the region */
+  gdk_draw_drawable (Pixmap,
+    Drawing->Drawing_Area_V->style->black_gc,
+    Drawing->Pixmap,
+    0, y,
+    0, y + height,
+    Drawing->width+SAFETY, Drawing->height - y + SAFETY);
 
 
 
-       if (Drawing->Pixmap)
-               gdk_pixmap_unref(Drawing->Pixmap);
 
-       Drawing->Pixmap = Pixmap;
-       
-       Drawing->height+=height;
+  if (Drawing->Pixmap)
+    gdk_pixmap_unref(Drawing->Pixmap);
 
-       /* Rectangle to update, from new Drawing dimensions */
-       //update_rect.x = 0 ;
-       //update_rect.y = y ;
-       //update_rect.width = Drawing->width;
-       //update_rect.height = Drawing->height - y ;
-       //gtk_widget_draw( Drawing->Drawing_Area_V, &update_rect);
+  Drawing->Pixmap = Pixmap;
+  
+  Drawing->height+=height;
+
+  /* Rectangle to update, from new Drawing dimensions */
+  //update_rect.x = 0 ;
+  //update_rect.y = y ;
+  //update_rect.width = Drawing->width;
+  //update_rect.height = Drawing->height - y ;
+  //gtk_widget_draw( Drawing->Drawing_Area_V, &update_rect);
 }
 
 
 /* Remove a square corresponding to a removed process in the list */
 void drawing_remove_square(Drawing_t *Drawing,
-                               guint y,
-                               guint height)
+        guint y,
+        guint height)
 {
-       //GdkRectangle update_rect;
-       
-       /* Allocate a new pixmap with new height */
-       GdkPixmap *Pixmap = gdk_pixmap_new(
-                       Drawing->Drawing_Area_V->window,
-                       Drawing->width + SAFETY,
-                       Drawing->height - height + SAFETY,
-                       -1);
-       
-       /* Copy the high region */
-       gdk_draw_drawable (Pixmap,
-               Drawing->Drawing_Area_V->style->black_gc,
-               Drawing->Pixmap,
-               0, 0,
-               0, 0,
-               Drawing->width + SAFETY, y);
-
-
-
-       /* Copy up the bottom of the region */
-       gdk_draw_drawable (Pixmap,
-               Drawing->Drawing_Area_V->style->black_gc,
-               Drawing->Pixmap,
-               0, y + height,
-               0, y,
-               Drawing->width, Drawing->height - y - height + SAFETY);
-
-
-       if (Drawing->Pixmap)
-               gdk_pixmap_unref(Drawing->Pixmap);
-
-       Drawing->Pixmap = Pixmap;
-       
-       Drawing->height-=height;
-       
-       /* Rectangle to update, from new Drawing dimensions */
-       //update_rect.x = 0 ;
-       //update_rect.y = y ;
-       //update_rect.width = Drawing->width;
-       //update_rect.height = Drawing->height - y ;
-       //gtk_widget_draw( Drawing->Drawing_Area_V, &update_rect);
+  //GdkRectangle update_rect;
+  
+  /* Allocate a new pixmap with new height */
+  GdkPixmap *Pixmap = gdk_pixmap_new(
+      Drawing->Drawing_Area_V->window,
+      Drawing->width + SAFETY,
+      Drawing->height - height + SAFETY,
+      -1);
+  
+  /* Copy the high region */
+  gdk_draw_drawable (Pixmap,
+    Drawing->Drawing_Area_V->style->black_gc,
+    Drawing->Pixmap,
+    0, 0,
+    0, 0,
+    Drawing->width + SAFETY, y);
+
+
+
+  /* Copy up the bottom of the region */
+  gdk_draw_drawable (Pixmap,
+    Drawing->Drawing_Area_V->style->black_gc,
+    Drawing->Pixmap,
+    0, y + height,
+    0, y,
+    Drawing->width, Drawing->height - y - height + SAFETY);
+
+
+  if (Drawing->Pixmap)
+    gdk_pixmap_unref(Drawing->Pixmap);
+
+  Drawing->Pixmap = Pixmap;
+  
+  Drawing->height-=height;
+  
+  /* Rectangle to update, from new Drawing dimensions */
+  //update_rect.x = 0 ;
+  //update_rect.y = y ;
+  //update_rect.width = Drawing->width;
+  //update_rect.height = Drawing->height - y ;
+  //gtk_widget_draw( Drawing->Drawing_Area_V, &update_rect);
 }
 
 
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