[sysprof] duplex: allow setting duplex labels

[Christian Hergert <chergert src gnome org>]

commit f2c435f75f77583cf33ec2f120480f6bb2833c62
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jul 1 12:43:26 2019 -0700

    duplex: allow setting duplex labels

 src/libsysprof-ui/sysprof-duplex-visualizer.c | 42 +++++++++++++++++++++++----
 src/libsysprof-ui/sysprof-duplex-visualizer.h |  3 ++
 2 files changed, 40 insertions(+), 5 deletions(-)
---
diff --git a/src/libsysprof-ui/sysprof-duplex-visualizer.c b/src/libsysprof-ui/sysprof-duplex-visualizer.c
index f4fce54..82bdca0 100644
--- a/src/libsysprof-ui/sysprof-duplex-visualizer.c
+++ b/src/libsysprof-ui/sysprof-duplex-visualizer.c
@@ -40,12 +40,14 @@ struct _SysprofDuplexVisualizer
   GdkRGBA rx_rgba;
   GdkRGBA tx_rgba;
 
+  gchar *rx_label;
+  gchar *tx_label;
+
+  PointCache *cache;
+
   guint rx_rgba_set : 1;
   guint tx_rgba_set : 1;
-
   guint use_diff : 1;
-
-  PointCache *cache;
 };
 
 typedef struct
@@ -492,11 +494,17 @@ sysprof_duplex_visualizer_draw (GtkWidget *widget,
   gdk_cairo_set_source_rgba (cr, &fg);
 
   cairo_move_to (cr, 2, 2);
-  pango_layout_set_text (layout, "RX", 2);
+  if (self->rx_label != NULL)
+    pango_layout_set_text (layout, self->rx_label, -1);
+  else
+    pango_layout_set_text (layout, "RX", 2);
   pango_cairo_show_layout (cr, layout);
 
   cairo_move_to (cr, 2, mid + 2);
-  pango_layout_set_text (layout, "TX", 2);
+  if (self->tx_label != NULL)
+    pango_layout_set_text (layout, self->tx_label, -1);
+  else
+    pango_layout_set_text (layout, "TX", 2);
   pango_cairo_show_layout (cr, layout);
 
   pango_font_description_free (font_desc);
@@ -511,6 +519,8 @@ sysprof_duplex_visualizer_finalize (GObject *object)
   SysprofDuplexVisualizer *self = (SysprofDuplexVisualizer *)object;
 
   g_clear_pointer (&self->cache, point_cache_unref);
+  g_clear_pointer (&self->rx_label, g_free);
+  g_clear_pointer (&self->tx_label, g_free);
 
   G_OBJECT_CLASS (sysprof_duplex_visualizer_parent_class)->finalize (object);
 }
@@ -589,3 +599,25 @@ sysprof_duplex_visualizer_set_use_diff (SysprofDuplexVisualizer *self,
   self->use_diff = !!use_diff;
   gtk_widget_queue_allocate (GTK_WIDGET (self));
 }
+
+void
+sysprof_duplex_visualizer_set_labels (SysprofDuplexVisualizer *self,
+                                      const gchar             *rx_label,
+                                      const gchar             *tx_label)
+{
+  g_return_if_fail (SYSPROF_IS_DUPLEX_VISUALIZER (self));
+
+  if (g_strcmp0 (rx_label, self->rx_label) != 0)
+    {
+      g_free (self->rx_label);
+      self->rx_label = g_strdup (rx_label);
+    }
+
+  if (g_strcmp0 (tx_label, self->tx_label) != 0)
+    {
+      g_free (self->tx_label);
+      self->tx_label = g_strdup (tx_label);
+    }
+
+  gtk_widget_queue_draw (GTK_WIDGET (self));
+}
diff --git a/src/libsysprof-ui/sysprof-duplex-visualizer.h b/src/libsysprof-ui/sysprof-duplex-visualizer.h
index c543fad..0b7dec5 100644
--- a/src/libsysprof-ui/sysprof-duplex-visualizer.h
+++ b/src/libsysprof-ui/sysprof-duplex-visualizer.h
@@ -32,6 +32,9 @@ GtkWidget *sysprof_duplex_visualizer_new          (void);
 gboolean   sysprof_duplex_visualizer_get_use_diff (SysprofDuplexVisualizer *self);
 void       sysprof_duplex_visualizer_set_use_diff (SysprofDuplexVisualizer *self,
                                                    gboolean                 use_diff);
+void       sysprof_duplex_visualizer_set_labels   (SysprofDuplexVisualizer *self,
+                                                   const gchar             *rx_label,
+                                                   const gchar             *tx_label);
 void       sysprof_duplex_visualizer_set_counters (SysprofDuplexVisualizer *self,
                                                    guint                    rx_counter,
                                                    guint                    tx_counter);