+Thu Aug 26 22:44:12 2004 Matthias Clasen <maclas@gmx.de>
+
+ Provide information about how an adjustment change in a range
+ widget happened. Add a "slider-moved" signal which reports how
+ a user is interacting with the range, whether they are clicking
+ on a stepper or the trough, or dragging the slider. (#133263,
+ Thomas Fitzsimmons)
+
+ * gtk/gtkmarshalers.list: Add signal type BOOLEAN:ENUM,DOUBLE.
+ * gtk/gtkrange.c (gtk_range_class_init): Add "change-value"
+ signal.
+ (gtk_range_internal_set_value): Rename to
+ gtk_range_real_change_value. Add GtkScrollType parameter. Emit
+ the change-value signal when the range's value changes.
+ (update_slider_position, gtk_range_scroll_event, step_back,
+ step_forward, page_back, page_forward, scroll_begin,
+ scroll_end): Change gtk_range_internal_set_value to
+ gtk_range_real_change_value.
+ * gtk/gtkrange.h (struct _GtkRangeClass): Declare change_value
+ function.
+
2004-08-26 Matthias Clasen <mclasen@redhat.com>
* modules/input/Makefile.am: Build imime.la on Windows.
+Thu Aug 26 22:44:12 2004 Matthias Clasen <maclas@gmx.de>
+
+ Provide information about how an adjustment change in a range
+ widget happened. Add a "slider-moved" signal which reports how
+ a user is interacting with the range, whether they are clicking
+ on a stepper or the trough, or dragging the slider. (#133263,
+ Thomas Fitzsimmons)
+
+ * gtk/gtkmarshalers.list: Add signal type BOOLEAN:ENUM,DOUBLE.
+ * gtk/gtkrange.c (gtk_range_class_init): Add "change-value"
+ signal.
+ (gtk_range_internal_set_value): Rename to
+ gtk_range_real_change_value. Add GtkScrollType parameter. Emit
+ the change-value signal when the range's value changes.
+ (update_slider_position, gtk_range_scroll_event, step_back,
+ step_forward, page_back, page_forward, scroll_begin,
+ scroll_end): Change gtk_range_internal_set_value to
+ gtk_range_real_change_value.
+ * gtk/gtkrange.h (struct _GtkRangeClass): Declare change_value
+ function.
+
2004-08-26 Matthias Clasen <mclasen@redhat.com>
* modules/input/Makefile.am: Build imime.la on Windows.
+Thu Aug 26 22:44:12 2004 Matthias Clasen <maclas@gmx.de>
+
+ Provide information about how an adjustment change in a range
+ widget happened. Add a "slider-moved" signal which reports how
+ a user is interacting with the range, whether they are clicking
+ on a stepper or the trough, or dragging the slider. (#133263,
+ Thomas Fitzsimmons)
+
+ * gtk/gtkmarshalers.list: Add signal type BOOLEAN:ENUM,DOUBLE.
+ * gtk/gtkrange.c (gtk_range_class_init): Add "change-value"
+ signal.
+ (gtk_range_internal_set_value): Rename to
+ gtk_range_real_change_value. Add GtkScrollType parameter. Emit
+ the change-value signal when the range's value changes.
+ (update_slider_position, gtk_range_scroll_event, step_back,
+ step_forward, page_back, page_forward, scroll_begin,
+ scroll_end): Change gtk_range_internal_set_value to
+ gtk_range_real_change_value.
+ * gtk/gtkrange.h (struct _GtkRangeClass): Declare change_value
+ function.
+
2004-08-26 Matthias Clasen <mclasen@redhat.com>
* modules/input/Makefile.am: Build imime.la on Windows.
+Thu Aug 26 22:44:12 2004 Matthias Clasen <maclas@gmx.de>
+
+ Provide information about how an adjustment change in a range
+ widget happened. Add a "slider-moved" signal which reports how
+ a user is interacting with the range, whether they are clicking
+ on a stepper or the trough, or dragging the slider. (#133263,
+ Thomas Fitzsimmons)
+
+ * gtk/gtkmarshalers.list: Add signal type BOOLEAN:ENUM,DOUBLE.
+ * gtk/gtkrange.c (gtk_range_class_init): Add "change-value"
+ signal.
+ (gtk_range_internal_set_value): Rename to
+ gtk_range_real_change_value. Add GtkScrollType parameter. Emit
+ the change-value signal when the range's value changes.
+ (update_slider_position, gtk_range_scroll_event, step_back,
+ step_forward, page_back, page_forward, scroll_begin,
+ scroll_end): Change gtk_range_internal_set_value to
+ gtk_range_real_change_value.
+ * gtk/gtkrange.h (struct _GtkRangeClass): Declare change_value
+ function.
+
2004-08-26 Matthias Clasen <mclasen@redhat.com>
* modules/input/Makefile.am: Build imime.la on Windows.
*/
/*
- * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
+ * Modified by the GTK+ Team and others 1997-2004. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
VALUE_CHANGED,
ADJUST_BOUNDS,
MOVE_SLIDER,
+ CHANGE_VALUE,
LAST_SIGNAL
};
static void gtk_range_remove_update_timer (GtkRange *range);
static GdkRectangle* get_area (GtkRange *range,
MouseLocation location);
-static void gtk_range_internal_set_value (GtkRange *range,
- gdouble value);
+static gboolean gtk_range_real_change_value (GtkRange *range,
+ GtkScrollType scroll,
+ gdouble value,
+ gpointer data);
static void gtk_range_update_value (GtkRange *range);
widget_class->style_set = gtk_range_style_set;
class->move_slider = gtk_range_move_slider;
+ class->change_value = gtk_range_real_change_value;
class->slider_detail = "slider";
class->stepper_detail = "stepper";
_gtk_marshal_VOID__ENUM,
G_TYPE_NONE, 1,
GTK_TYPE_SCROLL_TYPE);
+
+ /**
+ * GtkRange::change-value:
+ * @range: the range that received the signal.
+ * @scroll: the type of scroll action that was performed.
+ * @value: the new value resulting from the scroll action.
+ * @returns: %TRUE to prevent other handlers from being invoked for the
+ * signal. %FALSE to propagate the signal further.
+ *
+ * The ::change-value signal is emitted when a scroll action is
+ * performed on a range. It allows an application to determine the
+ * type of scroll event that occurred and the resultant new value.
+ * The application can handle the event itself and return %TRUE to
+ * prevent further processing. Or, by returning %FALSE, it can pass
+ * the event to other handlers until the default GTK+ handler is
+ * reached.
+ *
+ * The value parameter is unrounded. An application that overrides
+ * the ::change-value signal is responsible for clamping the value to
+ * the desired number of digits; the default GTK+ handler clamps the
+ * value based on @range->round_digits.
+ *
+ * It is not possible to use delayed update policies in an overridden
+ * ::change-value handler.
+ *
+ * Since: 2.6
+ */
+ signals[CHANGE_VALUE] =
+ g_signal_new ("change_value",
+ G_TYPE_FROM_CLASS (gobject_class),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GtkRangeClass, change_value),
+ _gtk_boolean_handled_accumulator, NULL,
+ _gtk_marshal_BOOLEAN__ENUM_DOUBLE,
+ G_TYPE_BOOLEAN, 2,
+ GTK_TYPE_SCROLL_TYPE,
+ G_TYPE_DOUBLE);
g_object_class_install_property (gobject_class,
PROP_UPDATE_POLICY,
gint delta;
gint c;
gdouble new_value;
-
+ gboolean handled;
+
if (range->orientation == GTK_ORIENTATION_VERTICAL)
delta = mouse_y - range->slide_initial_coordinate;
else
new_value = coord_to_value (range, c);
- gtk_range_internal_set_value (range, new_value);
+ g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_JUMP, new_value,
+ &handled);
}
static void stop_scrolling (GtkRange *range)
{
GtkAdjustment *adj = GTK_RANGE (range)->adjustment;
gdouble delta;
+ gboolean handled;
delta = _gtk_range_get_wheel_delta (range, event->direction);
- gtk_range_internal_set_value (range, adj->value + delta);
+
+ g_signal_emit (range, signals[CHANGE_VALUE], 0,
+ GTK_SCROLL_JUMP, adj->value + delta,
+ &handled);
/* Policy DELAYED makes sense with scroll events,
* but DISCONTINUOUS doesn't, so we update immediately
step_back (GtkRange *range)
{
gdouble newval;
+ gboolean handled;
newval = range->adjustment->value - range->adjustment->step_increment;
- gtk_range_internal_set_value (range, newval);
+ g_signal_emit (range, signals[CHANGE_VALUE], 0,
+ GTK_SCROLL_STEP_BACKWARD, newval, &handled);
}
static void
step_forward (GtkRange *range)
{
gdouble newval;
+ gboolean handled;
newval = range->adjustment->value + range->adjustment->step_increment;
- gtk_range_internal_set_value (range, newval);
+ g_signal_emit (range, signals[CHANGE_VALUE], 0,
+ GTK_SCROLL_STEP_FORWARD, newval, &handled);
}
page_back (GtkRange *range)
{
gdouble newval;
+ gboolean handled;
newval = range->adjustment->value - range->adjustment->page_increment;
- gtk_range_internal_set_value (range, newval);
+ g_signal_emit (range, signals[CHANGE_VALUE], 0,
+ GTK_SCROLL_PAGE_BACKWARD, newval, &handled);
}
static void
page_forward (GtkRange *range)
{
gdouble newval;
+ gboolean handled;
newval = range->adjustment->value + range->adjustment->page_increment;
- gtk_range_internal_set_value (range, newval);
+ g_signal_emit (range, signals[CHANGE_VALUE], 0,
+ GTK_SCROLL_PAGE_FORWARD, newval, &handled);
}
static void
scroll_begin (GtkRange *range)
{
- gtk_range_internal_set_value (range, range->adjustment->lower);
+ gboolean handled;
+ g_signal_emit (range, signals[CHANGE_VALUE], 0,
+ GTK_SCROLL_START, range->adjustment->lower,
+ &handled);
}
static void
scroll_end (GtkRange *range)
{
gdouble newval;
+ gboolean handled;
newval = range->adjustment->upper - range->adjustment->page_size;
- gtk_range_internal_set_value (range, newval);
+ g_signal_emit (range, signals[CHANGE_VALUE], 0, GTK_SCROLL_END, newval,
+ &handled);
}
static void
return NULL;
}
-static void
-gtk_range_internal_set_value (GtkRange *range,
- gdouble value)
+static gboolean
+gtk_range_real_change_value (GtkRange *range,
+ GtkScrollType scroll,
+ gdouble value,
+ gpointer data)
{
/* potentially adjust the bounds _before we clamp */
g_signal_emit (range, signals[ADJUST_BOUNDS], 0, value);
break;
}
}
+ return FALSE;
}
static void
projects / gtk4.git / commitdiff