[chronojump] ForceSensor elastic "Configure fixation" when stiffness is 0

[Xavier de Blas <xaviblas src gnome org>]

commit 800c19dfe56f4e6231442e1587a3e0b27c1a9059
Author: Xavier de Blas <xaviblas gmail com>
Date:   Wed Oct 23 19:27:15 2019 +0200

    ForceSensor elastic "Configure fixation" when stiffness is 0

 src/gui/forceSensor.cs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/src/gui/forceSensor.cs b/src/gui/forceSensor.cs
index 9dc73b3a..e4ebea0f 100644
--- a/src/gui/forceSensor.cs
+++ b/src/gui/forceSensor.cs
@@ -2413,8 +2413,11 @@ LogB.Information(" fs R ");
 
        private void on_elastic_bands_win_stiffness_changed(object o, EventArgs args)
        {
-               button_force_sensor_stiffness.Label = Catalog.GetString("Stiffness:") + " " +
-                       forceSensorElasticBandsWin.TotalStiffness + " N/m";
+               if(forceSensorElasticBandsWin.TotalStiffness == "0")
+                       button_force_sensor_stiffness.Label = Catalog.GetString("Configure fixation");
+               else
+                       button_force_sensor_stiffness.Label = Catalog.GetString("Stiffness:") + " " +
+                               forceSensorElasticBandsWin.TotalStiffness + " N/m";
        }