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add new signal 'adjust_bounds' to potentialy change the bounds before

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2002-02-14  Jody Goldberg <jody@gnome.org>

	* gtk/gtkrange.c (gtk_range_class_init) : add new signal
	  'adjust_bounds' to potentialy change the bounds before assigning the
	  new value and camping it to the existing bounds.
	(gtk_range_internal_set_value) : used here. #68800.
	* gtk/gtkmarshalers.list : add VOID:DOUBLE
This commit is contained in:
Jody Goldberg
2002-02-15 05:53:08 +00:00
committed by Jody Goldberg
parent 27455dcd90
commit f0ed36b324
10 changed files with 73 additions and 1 deletions
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15
gtk/gtkrange.c
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@ -46,6 +46,7 @@ enum {
enum {
VALUE_CHANGED,
ADJUST_BOUNDS,
MOVE_SLIDER,
LAST_SIGNAL
};
@ -244,6 +245,16 @@ gtk_range_class_init (GtkRangeClass *class)
_gtk_marshal_NONE__NONE,
G_TYPE_NONE, 0);
signals[ADJUST_BOUNDS] =
g_signal_new ("adjust_bounds",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkRangeClass, adjust_bounds),
NULL, NULL,
_gtk_marshal_VOID__DOUBLE,
G_TYPE_NONE, 1,
G_TYPE_DOUBLE);
signals[MOVE_SLIDER] =
g_signal_new ("move_slider",
G_TYPE_FROM_CLASS (object_class),
@ -254,7 +265,6 @@ gtk_range_class_init (GtkRangeClass *class)
G_TYPE_NONE, 1,
GTK_TYPE_SCROLL_TYPE);
g_object_class_install_property (gobject_class,
PROP_UPDATE_POLICY,
g_param_spec_enum ("update_policy",
@ -2149,6 +2159,9 @@ static void
gtk_range_internal_set_value (GtkRange *range,
gdouble value)
{
/* potentially adjust the bounds _before we clamp */
g_signal_emit (G_OBJECT (range), signals[ADJUST_BOUNDS], 0, value);
value = CLAMP (value, range->adjustment->lower,
(range->adjustment->upper - range->adjustment->page_size));