clamp the value to the range that was set

2001-06-05  Havoc Pennington  <hp@redhat.com>

	* gtk/gtkspinbutton.c (gtk_spin_button_set_range): clamp the value
	to the range that was set

	* gtk/gtkrange.c: add value_changed signal, primarily
	intended for use with GtkScale
	(gtk_range_set_increments): new function
	(gtk_range_set_range): new function with weird name
	(gtk_range_set_value): new function
	(gtk_range_get_value): new function

	* gtk/gtkspinbutton.c (gtk_spin_button_get_value): rename
	from gtk_spin_button_get_value_as_float(). Compat #define
	added for get_value_as_float.

	* gtk/gtkhscale.c (gtk_hscale_new_with_range): new function

	* gtk/gtkvscale.c (gtk_vscale_new_with_range): new function

2001-06-05  Havoc Pennington  <hp@redhat.com>

	* test-loaders.c (main): use putenv not setenv, reported by
	 Armin Theissen

1 files changed, 44 insertions, 0 deletions

diff --git a/gtk/gtkhscale.c b/gtk/gtkhscale.c
index 4b6e34a4cc..ebd37861e4 100644
--- a/gtk/gtkhscale.c
+++ b/gtk/gtkhscale.c
@@ -102,6 +102,50 @@ gtk_hscale_new (GtkAdjustment *adjustment)
   return hscale;
 }
 
+/**
+ * gtk_hscale_new_with_range:
+ * @min: minimum value
+ * @max: maximum value
+ * @step: step increment (tick size) used with keyboard shortcuts
+ * 
+ * Creates a new horizontal scale widget that lets the user
+ * input a number between @min and @max with the increment @step.
+ * @step must be nonzero; it's the distance the slider moves when
+ * using the arrow keys to adjust the scale value.
+ * 
+ * Return value: a new #GtkHScale
+ **/
+GtkWidget*
+gtk_hscale_new_with_range (gdouble min,
+                           gdouble max,
+                           gdouble step)
+{
+  GtkObject *adj;
+  GtkScale *scale;
+  gint digits;
+
+  g_return_val_if_fail (min < max, NULL);
+  g_return_val_if_fail (step != 0.0, NULL);
+
+  adj = gtk_adjustment_new (min, min, max, step, 10 * step, step);
+  
+  scale = g_object_new (GTK_TYPE_HSCALE,
+                        "adjustment", adj,
+                        NULL);
+
+  if (fabs (step) >= 1.0 || step == 0.0)
+    digits = 0;
+  else {
+    digits = abs ((gint) floor (log10 (fabs (step))));
+    if (digits > 5)
+      digits = 5;
+  }
+
+  gtk_scale_set_digits (scale, digits);
+  
+  return GTK_WIDGET (scale);
+}
+
 static gboolean
 gtk_hscale_expose (GtkWidget      *widget,
                    GdkEventExpose *event)