[chronojump] DialogMessage on mac resizes after showing and this solves the glitch

[Xavier de Blas <xaviblas src gnome org>]

commit fa2229ba3805ebd9c978b94d6d84dfd6ae690f97
Author: Xavier de Blas <xaviblas gmail com>
Date:   Wed Feb 23 15:22:30 2022 +0100

    DialogMessage on mac resizes after showing and this solves the glitch

 src/gui/dialogMessage.cs | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)
---
diff --git a/src/gui/dialogMessage.cs b/src/gui/dialogMessage.cs
index 68298b89a..4f8dbf19e 100644
--- a/src/gui/dialogMessage.cs
+++ b/src/gui/dialogMessage.cs
@@ -121,23 +121,25 @@ public class DialogMessage
                else
                        scrolledwindow_by_software.SetPolicy(PolicyType.Never, PolicyType.Never);
 
-
-               
                label_message.Show();
                dialog_message.Show();
-               
-               //GLib.Timeout.Add(200, new GLib.TimeoutHandler(showLabelAndDialog));
+
+               if(UtilAll.GetOSEnum() == UtilAll.OperatingSystems.MACOSX)
+                       GLib.Timeout.Add(200, new GLib.TimeoutHandler(resizeDialogForMac));
        }
 
        /*
-       private bool showLabelAndDialog()
+          on some macs, the label is not shown correctly, seems not a problem of frame or scrollerwin
+          after resizing a bit (by user) is shown correctly, so resize here.
+          */
+       private bool resizeDialogForMac ()
        {
-               label_message.Show();   
-               dialog_message.Show();
+               dialog_message.SetSizeRequest(
+                               dialog_message.SizeRequest().Width + 3,
+                               dialog_message.SizeRequest().Height + 3);
 
                return false;
        }
-       */
 
        public void on_button_go_clicked (object obj, EventArgs args)
        {