fix multiple traces support in cfv
[lttv.git] / ltt / branches / poly / lttv / modules / gui / controlflow / drawing.c
index 6d7b844e5e0ec3dd86a259c259716b69eec9788d..240c9c34ea42ac64cc2ec29689c152405ce5c5a1 100644 (file)
@@ -40,7 +40,7 @@
 #define g_debug(format...) g_log (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format)
 
 //FIXME
-#define TRACE_NUMBER 0
+// fixed #define TRACE_NUMBER 0
 #define EXTRA_ALLOC 1024 // pixels
 
 
@@ -72,7 +72,8 @@ GdkColor drawing_colors[NUM_COLORS] =
   { 0, 0x0000, 0xFF00, 0x0000 }, /* COL_RUN_USER_MODE : green */
   { 0, 0x0100, 0x9E00, 0xFFFF }, /* COL_RUN_SYSCALL : pale blue */
   { 0, 0xFF00, 0xFF00, 0x0100 }, /* COL_RUN_TRAP : yellow */
-  { 0, 0xFFFF, 0x5E00, 0x0000 }, /* COL_RUN_IRQ : red */
+  { 0, 0xFFFF, 0x5E00, 0x0000 }, /* COL_RUN_IRQ : orange */
+  { 0, 0xFFFF, 0x9400, 0x9600 }, /* COL_RUN_SOFT_IRQ : pink */
   { 0, 0x6600, 0x0000, 0x0000 }, /* COL_WAIT : dark red */
   { 0, 0x7700, 0x7700, 0x0000 }, /* COL_WAIT_CPU : dark yellow */
   { 0, 0x6400, 0x0000, 0x5D00 }, /* COL_ZOMBIE : dark purple */
@@ -122,6 +123,7 @@ void drawing_data_request(Drawing_t *drawing,
   if(width < 0) return ;
   if(height < 0) return ;
 
+
   Tab *tab = drawing->control_flow_data->tab;
   TimeWindow time_window =
               lttvwindow_get_time_window(tab);
@@ -176,12 +178,12 @@ void drawing_data_request(Drawing_t *drawing,
     LttvTraceHookByFacility *thf;
 
     guint ret;
+    gint before_hn, after_hn;
 
     nb_trace = lttv_traceset_number(traceset);
-    // FIXME : eventually request for more traces
-    // for(i = 0 ; i < nb_trace ; i++) {
-    for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++)
-    {
+    // FIXME  (fixed) : eventually request for more traces
+    for(i = 0 ; i < nb_trace ; i++) {
+    //for(i = 0; i<MIN(TRACE_NUMBER+1, nb_trace);i++) {
       EventsRequest *events_request = g_new(EventsRequest, 1);
       // Create the hooks
       //LttvHooks *event = lttv_hooks_new();
@@ -218,95 +220,113 @@ void drawing_data_request(Drawing_t *drawing,
          associated by id hooks. */
 
       hooks = g_array_new(FALSE, FALSE, sizeof(LttvTraceHook));
-      hooks = g_array_set_size(hooks, 13);
+      hooks = g_array_set_size(hooks, 17);
+      before_hn = after_hn = 0;
 
       /* before hooks */
       
       ret = lttv_trace_find_hook(ts->parent.t,
-          LTT_FACILITY_KERNEL, LTT_EVENT_SYSCALL_ENTRY,
+          LTT_FACILITY_KERNEL_ARCH, LTT_EVENT_SYSCALL_ENTRY,
           LTT_FIELD_SYSCALL_ID, 0, 0,
           before_execmode_hook,
           events_request,
-          &g_array_index(hooks, LttvTraceHook, 0));
-      g_assert(!ret);
+          &g_array_index(hooks, LttvTraceHook, before_hn++));
+      if(ret) before_hn--;
 
       ret = lttv_trace_find_hook(ts->parent.t,
-          LTT_FACILITY_KERNEL, LTT_EVENT_SYSCALL_EXIT,
+          LTT_FACILITY_KERNEL_ARCH, LTT_EVENT_SYSCALL_EXIT,
           0, 0, 0,
           before_execmode_hook,
           events_request,
-          &g_array_index(hooks, LttvTraceHook, 1));
-      g_assert(!ret);
+          &g_array_index(hooks, LttvTraceHook, before_hn++));
+      if(ret) before_hn--;
 
       ret = lttv_trace_find_hook(ts->parent.t,
           LTT_FACILITY_KERNEL, LTT_EVENT_TRAP_ENTRY,
           LTT_FIELD_TRAP_ID, 0, 0,
           before_execmode_hook,
           events_request,
-          &g_array_index(hooks, LttvTraceHook, 2));
-      g_assert(!ret);
+          &g_array_index(hooks, LttvTraceHook, before_hn++));
+      if(ret) before_hn--;
 
       ret = lttv_trace_find_hook(ts->parent.t,
           LTT_FACILITY_KERNEL, LTT_EVENT_TRAP_EXIT,
           0, 0, 0, 
           before_execmode_hook,
           events_request,
-          &g_array_index(hooks, LttvTraceHook, 3));
-      g_assert(!ret);
+          &g_array_index(hooks, LttvTraceHook, before_hn++));
+      if(ret) before_hn--;
 
       ret = lttv_trace_find_hook(ts->parent.t,
           LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_ENTRY,
           LTT_FIELD_IRQ_ID, 0, 0,
           before_execmode_hook,
           events_request,
-          &g_array_index(hooks, LttvTraceHook, 4));
-      g_assert(!ret);
+          &g_array_index(hooks, LttvTraceHook, before_hn++));
+      if(ret) before_hn--;
 
       ret = lttv_trace_find_hook(ts->parent.t,
           LTT_FACILITY_KERNEL, LTT_EVENT_IRQ_EXIT,
           0, 0, 0, 
           before_execmode_hook,
           events_request,
-          &g_array_index(hooks, LttvTraceHook, 5));
-      g_assert(!ret);
+          &g_array_index(hooks, LttvTraceHook, before_hn++));
+      if(ret) before_hn--;
+
+      ret = lttv_trace_find_hook(ts->parent.t,
+          LTT_FACILITY_KERNEL, LTT_EVENT_SOFT_IRQ_ENTRY,
+          LTT_FIELD_SOFT_IRQ_ID, 0, 0,
+          before_execmode_hook,
+          events_request,
+          &g_array_index(hooks, LttvTraceHook, before_hn++));
+      if(ret) before_hn--;
+
+      ret = lttv_trace_find_hook(ts->parent.t,
+          LTT_FACILITY_KERNEL, LTT_EVENT_SOFT_IRQ_EXIT,
+          0, 0, 0, 
+          before_execmode_hook,
+          events_request,
+          &g_array_index(hooks, LttvTraceHook, before_hn++));
+      if(ret) before_hn--;
+
 
       ret = lttv_trace_find_hook(ts->parent.t,
           LTT_FACILITY_PROCESS, LTT_EVENT_SCHEDCHANGE,
           LTT_FIELD_OUT, LTT_FIELD_IN, LTT_FIELD_OUT_STATE,
           before_schedchange_hook,
           events_request,
-          &g_array_index(hooks, LttvTraceHook, 6));
-      g_assert(!ret);
+          &g_array_index(hooks, LttvTraceHook, before_hn++));
+      if(ret) before_hn--;
 
       ret = lttv_trace_find_hook(ts->parent.t,
           LTT_FACILITY_PROCESS, LTT_EVENT_EXIT,
           LTT_FIELD_PID, 0, 0,
           before_process_exit_hook,
           events_request,
-          &g_array_index(hooks, LttvTraceHook, 7));
-      g_assert(!ret);
+          &g_array_index(hooks, LttvTraceHook, before_hn++));
+      if(ret) before_hn--;
       
       ret = lttv_trace_find_hook(ts->parent.t,
           LTT_FACILITY_PROCESS, LTT_EVENT_FREE,
           LTT_FIELD_PID, 0, 0,
           before_process_release_hook,
           events_request,
-          &g_array_index(hooks, LttvTraceHook, 8));
-      g_assert(!ret);
+          &g_array_index(hooks, LttvTraceHook, before_hn++));
+      if(ret) before_hn--;
 
 
 #if 0
       lttv_trace_find_hook(ts->parent.t,
           "core", "process", "event_sub_id", 
           "event_data1", "event_data2", before_process_hook,
-          &g_array_index(hooks, LttvTraceHook, 7));
+          &g_array_index(hooks, LttvTraceHook, hn++));
 #endif //0
 #if 0
       lttv_trace_find_hook(ts->parent.t, "core", "process_fork", "child_pid", 
-          NULL, NULL, process_fork, &g_array_index(hooks, LttvTraceHook, 7));
+          NULL, NULL, process_fork, &g_array_index(hooks, LttvTraceHook, hn++));
 
       lttv_trace_find_hook(ts->parent.t, "core", "process_exit", NULL, NULL, 
-          NULL, process_exit, &g_array_index(hooks, LttvTraceHook, 8));
+          NULL, process_exit, &g_array_index(hooks, LttvTraceHook, hn++));
 #endif //0
 
       /* after hooks */
@@ -314,83 +334,101 @@ void drawing_data_request(Drawing_t *drawing,
 #if 0
       /**** DESACTIVATED ****/
       lttv_trace_find_hook(ts->parent.t, "core","syscall_entry","syscall_id", 
-    NULL, NULL, after_execmode_hook, &g_array_index(hooks, LttvTraceHook, 8));
+    NULL, NULL, after_execmode_hook, &g_array_index(hooks, LttvTraceHook, hn++));
       /**** DESACTIVATED ****/
       lttv_trace_find_hook(ts->parent.t, "core", "syscall_exit", NULL, NULL, 
-          NULL, after_execmode_hook, &g_array_index(hooks, LttvTraceHook, 9));
+          NULL, after_execmode_hook, &g_array_index(hooks, LttvTraceHook, hn++));
 
       /**** DESACTIVATED ****/
       lttv_trace_find_hook(ts->parent.t, "core", "trap_entry", "trap_id",
-    NULL, NULL, after_execmode_hook, &g_array_index(hooks, LttvTraceHook, 10));
+    NULL, NULL, after_execmode_hook, &g_array_index(hooks, LttvTraceHook, hn++));
 
       /**** DESACTIVATED ****/
       lttv_trace_find_hook(ts->parent.t, "core", "trap_exit", NULL, NULL, NULL, 
-          after_execmode_hook, &g_array_index(hooks, LttvTraceHook, 11));
+          after_execmode_hook, &g_array_index(hooks, LttvTraceHook, hn++));
 
       /**** DESACTIVATED ****/
       lttv_trace_find_hook(ts->parent.t, "core", "irq_entry", "irq_id", NULL, 
-          NULL, after_execmode_hook, &g_array_index(hooks, LttvTraceHook, 12));
+          NULL, after_execmode_hook, &g_array_index(hooks, LttvTraceHook, hn++));
 
       /**** DESACTIVATED ****/
       lttv_trace_find_hook(ts->parent.t, "core", "irq_exit", NULL, NULL, NULL, 
-          after_execmode_hook, &g_array_index(hooks, LttvTraceHook, 13));
+          after_execmode_hook, &g_array_index(hooks, LttvTraceHook, hn++));
 #endif //0
 #if 0
       lttv_trace_find_hook(ts->parent.t, "core", "schedchange", "in", "out", 
         "out_state", after_schedchange_hook, 
-        &g_array_index(hooks, LttvTraceHook, 8));
+        &g_array_index(hooks, LttvTraceHook, hn++));
 
       lttv_trace_find_hook(ts->parent.t, "core", "process", "event_sub_id", 
           "event_data1", "event_data2", after_process_hook,
-          &g_array_index(hooks, LttvTraceHook, 9));
+          &g_array_index(hooks, LttvTraceHook, hn++));
 #endif //0
+      after_hn = before_hn;
+      
       ret = lttv_trace_find_hook(ts->parent.t,
           LTT_FACILITY_PROCESS, LTT_EVENT_SCHEDCHANGE,
           LTT_FIELD_OUT, LTT_FIELD_IN, LTT_FIELD_OUT_STATE,
           after_schedchange_hook,
           events_request,
-          &g_array_index(hooks, LttvTraceHook, 9));
-      g_assert(!ret);
+          &g_array_index(hooks, LttvTraceHook, after_hn++));
+      if(ret) after_hn--;
 
       ret = lttv_trace_find_hook(ts->parent.t,
           LTT_FACILITY_PROCESS, LTT_EVENT_FORK,
           LTT_FIELD_PARENT_PID, LTT_FIELD_CHILD_PID, 0,
           after_process_fork_hook,
           events_request,
-          &g_array_index(hooks, LttvTraceHook, 10));
-      g_assert(!ret);
+          &g_array_index(hooks, LttvTraceHook, after_hn++));
+      if(ret) after_hn--;
 
       ret = lttv_trace_find_hook(ts->parent.t,
           LTT_FACILITY_PROCESS, LTT_EVENT_EXIT,
           LTT_FIELD_PID, 0, 0,
           after_process_exit_hook,
           events_request,
-          &g_array_index(hooks, LttvTraceHook, 11));
-      g_assert(!ret);
+          &g_array_index(hooks, LttvTraceHook, after_hn++));
+      if(ret) after_hn--;
 
       ret = lttv_trace_find_hook(ts->parent.t,
           LTT_FACILITY_FS, LTT_EVENT_EXEC,
           0, 0, 0,
           after_fs_exec_hook,
           events_request,
-          &g_array_index(hooks, LttvTraceHook, 12));
-      g_assert(!ret);
+          &g_array_index(hooks, LttvTraceHook, after_hn++));
+      if(ret) after_hn--;
 
+      ret = lttv_trace_find_hook(ts->parent.t,
+          LTT_FACILITY_USER_GENERIC, LTT_EVENT_THREAD_BRAND,
+          LTT_FIELD_NAME, 0, 0,
+          after_user_generic_thread_brand_hook,
+          events_request,
+          &g_array_index(hooks, LttvTraceHook, after_hn++));
+      if(ret) after_hn--;
 
+      ret = lttv_trace_find_hook(ts->parent.t,
+          LTT_FACILITY_STATEDUMP, LTT_EVENT_ENUM_PROCESS_STATE,
+          LTT_FIELD_PID, LTT_FIELD_PARENT_PID, LTT_FIELD_NAME,
+          after_event_enum_process_hook,
+          events_request,
+          &g_array_index(hooks, LttvTraceHook, after_hn++));
+      if(ret) after_hn--;
+
+      hooks = g_array_set_size(hooks, after_hn);
 
 #if 0
       lttv_trace_find_hook(ts->parent.t, "core", "process_fork", "child_pid", 
-          NULL, NULL, process_fork, &g_array_index(hooks, LttvTraceHook, 7));
+          NULL, NULL, process_fork, &g_array_index(hooks, LttvTraceHook, hn++));
 
       lttv_trace_find_hook(ts->parent.t, "core", "process_exit", NULL, NULL, 
-          NULL, process_exit, &g_array_index(hooks, LttvTraceHook, 8));
+          NULL, process_exit, &g_array_index(hooks, LttvTraceHook, hn++));
 #endif //0
 
 
       
       /* Add these hooks to each event_by_id hooks list */
       /* add before */
-      for(k = 0 ; k < 9 ; k++) {
+      for(k = 0 ; k < before_hn ; k++) {
         hook = &g_array_index(hooks, LttvTraceHook, k);
         for(l=0;l<hook->fac_list->len;l++) {
           thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l);
@@ -402,7 +440,7 @@ void drawing_data_request(Drawing_t *drawing,
       }
 
       /* add after */
-      for(k = 9 ; k < 13 ; k++) {
+      for(k = before_hn ; k < after_hn ; k++) {
         hook = &g_array_index(hooks, LttvTraceHook, k);
         for(l=0;l<hook->fac_list->len;l++) {
           thf = g_array_index(hook->fac_list, LttvTraceHookByFacility*, l);
@@ -425,7 +463,7 @@ void drawing_data_request(Drawing_t *drawing,
       events_request->end_time = time_end;
       events_request->num_events = G_MAXUINT;
       events_request->end_position = NULL;
-      events_request->trace = i;    /* FIXME */
+      events_request->trace = i; //fixed    /* FIXME */
       events_request->before_chunk_traceset = before_chunk_traceset;
       events_request->before_chunk_trace = NULL;
       events_request->before_chunk_tracefile = NULL;
@@ -527,14 +565,21 @@ void drawing_chunk_begin(EventsRequest *events_request, LttvTracesetState *tss)
 {
   g_debug("Begin of chunk");
   ControlFlowData *cfd = events_request->viewer_data;
-  LttvTracesetContext *tsc = LTTV_TRACESET_CONTEXT(tss);
+  LttvTracesetContext *tsc = &tss->parent.parent;
   //LttTime current_time = lttv_traceset_context_get_current_tfc(tsc)->timestamp;
-  guint num_cpu = 
-    ltt_trace_get_num_cpu(tss->parent.traces[TRACE_NUMBER]->t);
-
-  cfd->process_list->current_hash_data = g_new(HashedProcessData*,num_cpu);
-  memset(cfd->process_list->current_hash_data, 0,
-         sizeof(HashedProcessData*)*num_cpu);
+  guint i;
+  LttvTraceset *traceset = tsc->ts;
+  guint nb_trace = lttv_traceset_number(traceset);
+  
+  if(!cfd->process_list->current_hash_data) {
+    cfd->process_list->current_hash_data = g_new(HashedProcessData**,nb_trace);
+    for(i = 0 ; i < nb_trace ; i++) {
+      guint num_cpu = ltt_trace_get_num_cpu(tss->parent.traces[i]->t);
+      cfd->process_list->current_hash_data[i] = g_new(HashedProcessData*,num_cpu);
+      memset(cfd->process_list->current_hash_data[i], 0,
+             sizeof(HashedProcessData*)*num_cpu);
+    }
+  }
   //cfd->drawing->last_start = LTT_TIME_MIN(current_time,
   //                                        events_request->end_time);
 }
@@ -544,7 +589,8 @@ void drawing_request_expose(EventsRequest *events_request,
                             LttvTracesetState *tss,
                             LttTime end_time)
 {
-  gint x, x_end, width;
+  gint x, width;
+  guint x_end;
 
   ControlFlowData *cfd = events_request->viewer_data;
   LttvTracesetContext *tsc = (LttvTracesetContext*)tss;
@@ -571,6 +617,9 @@ void drawing_request_expose(EventsRequest *events_request,
                                x, 0,
                                width, drawing->drawing_area->allocation.height);
  
+  /* Update directly when scrolling */
+  gdk_window_process_updates(drawing->drawing_area->window,
+      TRUE);
 }
 
 
@@ -624,6 +673,7 @@ configure_event( GtkWidget *widget, GdkEventConfigure *event,
       drawing->alloc_height = drawing->height + EXTRA_ALLOC;
       update_pixmap_size(drawing->control_flow_data->process_list,
                          drawing->alloc_width);
+      update_index_to_pixmap(drawing->control_flow_data->process_list);
     }
     //drawing->height = widget->allocation.height;
 
@@ -690,11 +740,12 @@ expose_event( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
       (ControlFlowData*)g_object_get_data(
                 G_OBJECT(widget),
                 "control_flow_data");
+#if 0
   if(unlikely(drawing->gc == NULL)) {
     drawing->gc = gdk_gc_new(drawing->drawing_area->window);
     gdk_gc_copy(drawing->gc, drawing->drawing_area->style->black_gc);
   }
-
+#endif //0
   TimeWindow time_window = 
       lttvwindow_get_time_window(control_flow_data->tab);
   LttTime current_time = 
@@ -714,11 +765,18 @@ expose_event( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
       event->area.width, event->area.height);
 #endif //0
   drawing->height = processlist_get_height(control_flow_data->process_list);
+#if 0
   copy_pixmap_to_screen(control_flow_data->process_list,
                         widget->window,
                         widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
                         event->area.x, event->area.y,
                         event->area.width, event->area.height);
+#endif //0
+  copy_pixmap_to_screen(control_flow_data->process_list,
+                        widget->window,
+                        drawing->gc,
+                        event->area.x, event->area.y,
+                        event->area.width, event->area.height);
                         
   
   /* Erase the dotted lines left.. */
@@ -741,7 +799,7 @@ expose_event( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
           drawing->width,
           &cursor_x);
 
-
+#if 0
     if(drawing->dotted_gc == NULL) {
 
       drawing->dotted_gc = gdk_gc_new(drawing->drawing_area->window);
@@ -758,6 +816,7 @@ expose_event( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
                         dash_list,
                         2);
     }
+#endif //0
     gint height_tot = MAX(widget->allocation.height, drawing->height);
     gdk_draw_line(widget->window,
                   drawing->dotted_gc,
@@ -904,8 +963,6 @@ Drawing_t *drawing_construct(ControlFlowData *control_flow_data)
   drawing->pango_layout =
     gtk_widget_create_pango_layout(drawing->drawing_area, NULL);
 
-  drawing->dotted_gc = NULL;
-
   drawing->height = 1;
   drawing->width = 1;
   drawing->depth = 0;
@@ -992,6 +1049,7 @@ Drawing_t *drawing_construct(ControlFlowData *control_flow_data)
         G_CALLBACK (button_press_event),
         (gpointer)drawing);
   
+
   gtk_widget_show(drawing->ruler);
   gtk_widget_show(drawing->padding);
   gtk_widget_show(drawing->ruler_hbox);
@@ -1008,6 +1066,50 @@ Drawing_t *drawing_construct(ControlFlowData *control_flow_data)
   gdk_colormap_alloc_colors(colormap, drawing_colors, NUM_COLORS, FALSE,
                             TRUE, success);
   
+  drawing->gc =
+    gdk_gc_new(GDK_DRAWABLE(main_window_get_widget(control_flow_data->tab)->window));
+  drawing->dotted_gc =
+    gdk_gc_new(GDK_DRAWABLE(main_window_get_widget(control_flow_data->tab)->window));
+
+  gdk_gc_copy(drawing->gc,
+      main_window_get_widget(control_flow_data->tab)->style->black_gc);
+  gdk_gc_copy(drawing->dotted_gc,
+      main_window_get_widget(control_flow_data->tab)->style->white_gc);
+  
+  gint8 dash_list[] = { 1, 2 };
+  gdk_gc_set_line_attributes(drawing->dotted_gc,
+                             1,
+                             GDK_LINE_ON_OFF_DASH,
+                             GDK_CAP_BUTT,
+                             GDK_JOIN_MITER);
+  gdk_gc_set_dashes(drawing->dotted_gc,
+                    0,
+                    dash_list,
+                    2);
+
+  drawing->ruler_gc_butt = 
+    gdk_gc_new(GDK_DRAWABLE(main_window_get_widget(control_flow_data->tab)->window));
+  gdk_gc_copy(drawing->ruler_gc_butt, 
+      main_window_get_widget(control_flow_data->tab)->style->black_gc);
+  drawing->ruler_gc_round = 
+    gdk_gc_new(GDK_DRAWABLE(main_window_get_widget(control_flow_data->tab)->window));
+  gdk_gc_copy(drawing->ruler_gc_round, 
+      main_window_get_widget(control_flow_data->tab)->style->black_gc);
+
+
+  gdk_gc_set_line_attributes(drawing->ruler_gc_butt,
+                               2,
+                               GDK_LINE_SOLID,
+                               GDK_CAP_BUTT,
+                               GDK_JOIN_MITER);
+
+  gdk_gc_set_line_attributes(drawing->ruler_gc_round,
+                             2,
+                             GDK_LINE_SOLID,
+                             GDK_CAP_ROUND,
+                             GDK_JOIN_ROUND);
+
+  
   return drawing;
 }
 
@@ -1027,8 +1129,11 @@ void drawing_destroy(Drawing_t *drawing)
   if(drawing->gc != NULL)
     gdk_gc_unref(drawing->gc);
   
-  g_free(drawing->pango_layout);
+  g_object_unref(drawing->pango_layout);
   if(drawing->dotted_gc != NULL) gdk_gc_unref(drawing->dotted_gc);
+  if(drawing->ruler_gc_butt != NULL) gdk_gc_unref(drawing->ruler_gc_butt);
+  if(drawing->ruler_gc_round != NULL) gdk_gc_unref(drawing->ruler_gc_round);
+
   g_free(drawing);
   g_info("drawing_destroy end");
 }
@@ -1271,15 +1376,8 @@ expose_ruler( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
           event->area.width,
           event->area.height);
 
-   GdkGC *gc = gdk_gc_new(drawing->ruler->window);
-   gdk_gc_copy(gc, drawing->ruler->style->black_gc);
-   gdk_gc_set_line_attributes(gc,
-                               2,
-                               GDK_LINE_SOLID,
-                               GDK_CAP_BUTT,
-                               GDK_JOIN_MITER);
   gdk_draw_line (drawing->ruler->window,
-                  gc,
+                  drawing->ruler_gc_butt,
                   event->area.x, 1,
                   event->area.x + event->area.width, 1);
 
@@ -1301,19 +1399,13 @@ expose_ruler( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
   global_width += ink_rect.width;
 
   gdk_draw_layout_with_colors(drawing->ruler->window,
-      gc,
+      drawing->ruler_gc_butt,
       0,
       6,
       layout, &foreground, &background);
 
-  gdk_gc_set_line_attributes(gc,
-                             2,
-                             GDK_LINE_SOLID,
-                             GDK_CAP_ROUND,
-                             GDK_JOIN_ROUND);
-
   gdk_draw_line (drawing->ruler->window,
-                   gc,
+                   drawing->ruler_gc_round,
                    1, 1,
                    1, 7);
 
@@ -1328,19 +1420,13 @@ expose_ruler( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
   if(global_width <= drawing->ruler->allocation.width)
   {
     gdk_draw_layout_with_colors(drawing->ruler->window,
-      gc,
+      drawing->ruler_gc_butt,
       drawing->ruler->allocation.width - ink_rect.width,
       6,
       layout, &foreground, &background);
 
-    gdk_gc_set_line_attributes(gc,
-                               2,
-                               GDK_LINE_SOLID,
-                               GDK_CAP_ROUND,
-                               GDK_JOIN_ROUND);
-
     gdk_draw_line (drawing->ruler->window,
-                   gc,
+                   drawing->ruler_gc_butt,
                    drawing->ruler->allocation.width-1, 1,
                    drawing->ruler->allocation.width-1, 7);
   }
@@ -1356,19 +1442,13 @@ expose_ruler( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
   if(global_width <= drawing->ruler->allocation.width)
   {
     gdk_draw_layout_with_colors(drawing->ruler->window,
-      gc,
+      drawing->ruler_gc_butt,
       (drawing->ruler->allocation.width - ink_rect.width)/2,
       6,
       layout, &foreground, &background);
 
-    gdk_gc_set_line_attributes(gc,
-                               2,
-                               GDK_LINE_SOLID,
-                               GDK_CAP_ROUND,
-                               GDK_JOIN_ROUND);
-
     gdk_draw_line (drawing->ruler->window,
-                   gc,
+                   drawing->ruler_gc_butt,
                    drawing->ruler->allocation.width/2, 1,
                    drawing->ruler->allocation.width/2, 7);
 
@@ -1377,7 +1457,6 @@ expose_ruler( GtkWidget *widget, GdkEventExpose *event, gpointer user_data )
 
   }
 
-  gdk_gc_unref(gc);
   g_object_unref(layout);
    
   return FALSE;
@@ -1390,4 +1469,5 @@ motion_notify_ruler(GtkWidget *widget, GdkEventMotion *event, gpointer user_data
 {
   //g_debug("motion");
   //eventually follow mouse and show time here
+  return 0;
 }
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