only emit "value_changed" if we really passed a new value.

Sat May  2 20:19:03 1998  Tim Janik  <timj@gtk.org>

        * gtk/gtkadjustment.c (gtk_adjustment_set_value): only emit
                "value_changed" if we really passed a new value.
                        (gtk_adjustment_changed): new function to emit the "changed" signal.
                                (gtk_adjustment_set_value): new function to emit the "value_changed"
                                        signal.

ChangeLog

@@ -1,3 +1,11 @@
+Sat May  2 20:19:03 1998  Tim Janik  <timj@gtk.org>
+
+	* gtk/gtkadjustment.c (gtk_adjustment_set_value): only emit
+ 	"value_changed" if we really passed a new value.
+	(gtk_adjustment_changed): new function to emit the "changed" signal.
+	(gtk_adjustment_set_value): new function to emit the "value_changed"
+	signal.
+
 Fri May  1 12:28:35 1998  Owen Taylor  <otaylor@gtk.org>
 
 	* gtk/gtkcombo.c: Further changes to the way the window

ChangeLog.pre-2-0

@@ -1,3 +1,11 @@
+Sat May  2 20:19:03 1998  Tim Janik  <timj@gtk.org>
+
+	* gtk/gtkadjustment.c (gtk_adjustment_set_value): only emit
+ 	"value_changed" if we really passed a new value.
+	(gtk_adjustment_changed): new function to emit the "changed" signal.
+	(gtk_adjustment_set_value): new function to emit the "value_changed"
+	signal.
+
 Fri May  1 12:28:35 1998  Owen Taylor  <otaylor@gtk.org>
 
 	* gtk/gtkcombo.c: Further changes to the way the window

ChangeLog.pre-2-10

@@ -1,3 +1,11 @@
+Sat May  2 20:19:03 1998  Tim Janik  <timj@gtk.org>
+
+	* gtk/gtkadjustment.c (gtk_adjustment_set_value): only emit
+ 	"value_changed" if we really passed a new value.
+	(gtk_adjustment_changed): new function to emit the "changed" signal.
+	(gtk_adjustment_set_value): new function to emit the "value_changed"
+	signal.
+
 Fri May  1 12:28:35 1998  Owen Taylor  <otaylor@gtk.org>
 
 	* gtk/gtkcombo.c: Further changes to the way the window

ChangeLog.pre-2-2

@@ -1,3 +1,11 @@
+Sat May  2 20:19:03 1998  Tim Janik  <timj@gtk.org>
+
+	* gtk/gtkadjustment.c (gtk_adjustment_set_value): only emit
+ 	"value_changed" if we really passed a new value.
+	(gtk_adjustment_changed): new function to emit the "changed" signal.
+	(gtk_adjustment_set_value): new function to emit the "value_changed"
+	signal.
+
 Fri May  1 12:28:35 1998  Owen Taylor  <otaylor@gtk.org>
 
 	* gtk/gtkcombo.c: Further changes to the way the window

ChangeLog.pre-2-4

@@ -1,3 +1,11 @@
+Sat May  2 20:19:03 1998  Tim Janik  <timj@gtk.org>
+
+	* gtk/gtkadjustment.c (gtk_adjustment_set_value): only emit
+ 	"value_changed" if we really passed a new value.
+	(gtk_adjustment_changed): new function to emit the "changed" signal.
+	(gtk_adjustment_set_value): new function to emit the "value_changed"
+	signal.
+
 Fri May  1 12:28:35 1998  Owen Taylor  <otaylor@gtk.org>
 
 	* gtk/gtkcombo.c: Further changes to the way the window

ChangeLog.pre-2-6

@@ -1,3 +1,11 @@
+Sat May  2 20:19:03 1998  Tim Janik  <timj@gtk.org>
+
+	* gtk/gtkadjustment.c (gtk_adjustment_set_value): only emit
+ 	"value_changed" if we really passed a new value.
+	(gtk_adjustment_changed): new function to emit the "changed" signal.
+	(gtk_adjustment_set_value): new function to emit the "value_changed"
+	signal.
+
 Fri May  1 12:28:35 1998  Owen Taylor  <otaylor@gtk.org>
 
 	* gtk/gtkcombo.c: Further changes to the way the window

ChangeLog.pre-2-8

@@ -1,3 +1,11 @@
+Sat May  2 20:19:03 1998  Tim Janik  <timj@gtk.org>
+
+	* gtk/gtkadjustment.c (gtk_adjustment_set_value): only emit
+ 	"value_changed" if we really passed a new value.
+	(gtk_adjustment_changed): new function to emit the "changed" signal.
+	(gtk_adjustment_set_value): new function to emit the "value_changed"
+	signal.
+
 Fri May  1 12:28:35 1998  Owen Taylor  <otaylor@gtk.org>
 
 	* gtk/gtkcombo.c: Further changes to the way the window

gtk/gtkadjustment.c

@@ -126,7 +126,30 @@ gtk_adjustment_set_value (GtkAdjustment        *adjustment,
   g_return_if_fail (adjustment != NULL);
   g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
 
-  adjustment->value = CLAMP (value, adjustment->lower, adjustment->upper);
+  value = CLAMP (value, adjustment->lower, adjustment->upper);
+
+  if (value != adjustment->value)
+    {
+      adjustment->value = value;
+
+      gtk_signal_emit_by_name (GTK_OBJECT (adjustment), "value_changed");
+    }
+}
+
+void
+gtk_adjustment_changed (GtkAdjustment        *adjustment)
+{
+  g_return_if_fail (adjustment != NULL);
+  g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
+
+  gtk_signal_emit_by_name (GTK_OBJECT (adjustment), "changed");
+}
+
+void
+gtk_adjustment_value_changed (GtkAdjustment        *adjustment)
+{
+  g_return_if_fail (adjustment != NULL);
+  g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
 
   gtk_signal_emit_by_name (GTK_OBJECT (adjustment), "value_changed");
 }

gtk/gtkadjustment.h

@@ -68,6 +68,8 @@ GtkObject* gtk_adjustment_new	     (gfloat		  value,
 					 gfloat		  page_size);
 void	   gtk_adjustment_set_value	(GtkAdjustment	 *adjustment,
 					 gfloat		  value);
+void	   gtk_adjustment_changed	(GtkAdjustment	 *adjustment);
+void	   gtk_adjustment_value_changed	(GtkAdjustment	 *adjustment);
 void	   gtk_adjustment_clamp_page	(GtkAdjustment	 *adjustment,
 					 gfloat		  lower,
 					 gfloat		  upper);