Show sub-GHz CPU frequency in MHz instead of always GHz

src/Indicator/Widgets/IndicatorWidgetFrequency.vala

@@ -11,6 +11,6 @@ public class Monitor.IndicatorWidgetFrequency : Monitor.IndicatorWidget {
     public override void update_label (Value value) {
         double frequency = value.get_double ();
 
-        label.label = ("%.2f %s").printf (frequency, _("GHz"));
+        label.label = Utils.Strings.format_frequency (frequency);
     }
 }

src/Resources/CPU.vala

@@ -44,8 +44,8 @@ public class Monitor.CPU : Object {
     private double _frequency;
     public double frequency {
         get {
-            // Convert kHz to GHz
-            return (double) (_frequency / 1000000);
+            // Convert kHz to MHz
+            return (double) (_frequency / 1000);
         }
     }
     public double temperature_mean {

src/Utils.vala

@@ -49,6 +49,13 @@ public class Monitor.Utils.Strings {
         return pretty;
     }
 
+    public static string format_frequency (double mhz) {
+        if (mhz >= 1000.0) {
+            return "%.2f %s".printf (mhz / 1000.0, _("GHz"));
+        }
+
+        return "%.0f %s".printf (mhz, _("MHz"));
+    }
 }
 
 public class Monitor.Utils.Colors : Object {

src/Views/SystemView/SystemCPUView.vala

@@ -126,7 +126,7 @@ public class Monitor.SystemCPUView : Monitor.WidgetResource {
         }
 
         main_metric_value = ("%d%%").printf (cpu.percentage);
-        cpu_frequency_label.text = ("%.2f %s").printf (cpu.frequency, _("GHz"));
+        cpu_frequency_label.text = Utils.Strings.format_frequency (cpu.frequency);
     }
 
     private Gtk.Grid grid_core_labels () {