[gtk/wip/baedert/for-master] calendar: Try to avoid chaning size when changing the year

[Timm Bäder <baedert src gnome org>]

commit 1124baff75b73a043ccc6d20efa26cf0291f38fb
Author: Timm Bäder <mail baedert org>
Date:   Tue Feb 4 12:29:54 2020 +0100

    calendar: Try to avoid chaning size when changing the year

 gtk/gtkcalendar.c | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/gtk/gtkcalendar.c b/gtk/gtkcalendar.c
index 452c1a7c6e..bb7b5adf64 100644
--- a/gtk/gtkcalendar.c
+++ b/gtk/gtkcalendar.c
@@ -655,6 +655,7 @@ gtk_calendar_init (GtkCalendar *calendar)
 #endif
   GdkContentFormats *formats;
   GtkDropTarget *dest;
+  int min_year_width;
 
   gtk_widget_set_can_focus (widget, TRUE);
 
@@ -776,6 +777,12 @@ gtk_calendar_init (GtkCalendar *calendar)
   set_month (calendar, tm->tm_mon);
   set_year (calendar, 1900 + tm->tm_year);
 
+  /* We just initialized the year label, now add some space to it so
+   * changing the year does not increase the calendar width */
+  gtk_widget_measure (priv->year_label, GTK_ORIENTATION_HORIZONTAL, -1,
+                      &min_year_width, NULL, NULL, NULL);
+  gtk_widget_set_size_request (priv->year_label, min_year_width + 10, -1);
+
 
   for (i=0;i<31;i++)
     priv->marked_date[i] = FALSE;