Added wrapping capabilities to GtkSpinButton. New function :

Sun Mar 29 22:29:00 1998  Tim Janik  <timj@gtk.org>

        * gtk/gtkspinbutton.[ch] gtk/testgtk.c (gtk_spin_button_set_wrap):
                Added wrapping capabilities to GtkSpinButton. New function :
                        gtk_spin_button_set_wrap (Lars Hamann and Stefan Jeske).

1 files changed, 37 insertions, 6 deletions

diff --git a/gtk/gtkspinbutton.c b/gtk/gtkspinbutton.c
index 3f014e04b..f26fc22cc 100644
--- a/gtk/gtkspinbutton.c
+++ b/gtk/gtkspinbutton.c
@@ -162,6 +162,7 @@ gtk_spin_button_init (GtkSpinButton *spin_button)
   spin_button->timer_calls = 0;
   spin_button->digits = 0;
   spin_button->numeric = 0;
+  spin_button->wrap = 0;
 }
 
 void
@@ -759,21 +760,41 @@ gtk_spin_button_spin (GtkSpinButton *spin_button,
 		      gfloat         step)
 {
   gfloat new_value = 0.0;
-
+  
   g_return_if_fail (spin_button != NULL);
   g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
   
   if (direction == GTK_ARROW_UP)
     {
-      new_value = MIN (spin_button->adjustment->value + step,
-		       spin_button->adjustment->upper);
+      new_value = spin_button->adjustment->value + step;
+      if (spin_button->wrap)
+	{
+	  if (spin_button->adjustment->value == spin_button->adjustment->upper)
+	    new_value = spin_button->adjustment->lower;
+	  else if (new_value > spin_button->adjustment->upper)
+	    new_value = spin_button->adjustment->upper;
+	}
+      else
+	{
+	  new_value = MIN (new_value, spin_button->adjustment->upper);
+	}
     }
   else if (direction == GTK_ARROW_DOWN) 
     {
-      new_value = MAX (spin_button->adjustment->value - step,
-		       spin_button->adjustment->lower);
+      new_value = spin_button->adjustment->value - step;
+      if (spin_button->wrap)
+	{
+	  if (spin_button->adjustment->value == spin_button->adjustment->lower)
+	    new_value = spin_button->adjustment->upper;
+	  else if (new_value < spin_button->adjustment->lower)
+	    new_value = spin_button->adjustment->lower;
+	}
+      else
+	{
+	  new_value = MAX (new_value, spin_button->adjustment->lower);
+	}
     }
-
+  
   if (new_value != spin_button->adjustment->value)
     gtk_adjustment_set_value (spin_button->adjustment, new_value);
 }
@@ -1100,3 +1121,13 @@ gtk_spin_button_insert_text (GtkEditable *editable,
   GTK_EDITABLE_CLASS (parent_class)->insert_text (editable, new_text,
 						  new_text_length, position);
 }
+
+void
+gtk_spin_button_set_wrap (GtkSpinButton  *spin_button,
+                         gint            wrap)
+{
+  g_return_if_fail (spin_button != NULL);
+  g_return_if_fail (GTK_IS_SPIN_BUTTON (spin_button));
+
+  spin_button->wrap = (wrap != 0);
+}