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removed code that forced range repaints upon every motion event, because

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2007-09-06 13:37:28  Tim Janik  <timj@imendio.com>

        * gtk/gtkrange.c (gtk_range_adjustment_value_changed): removed code
        that forced range repaints upon every motion event, because these tend
        to stall other repaints on busy CPUs.
        added a timer to still force repaints every once in a while (roughly
        5Hz atm) to avoid leaving the user without feedback on the range.
        fixes bug #460534.



svn path=/trunk/; revision=18730
This commit is contained in:
13:37:28 Tim Janik 2007-09-06 11:44:22 +00:00 committed by Tim Janik
parent 62f46c86d7
commit fb0958f085
2 changed files with 39 additions and 16 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2007-09-06 13:37:28 Tim Janik <timj@imendio.com>
* gtk/gtkrange.c (gtk_range_adjustment_value_changed): removed code
that forced range repaints upon every motion event, because these tend
to stall other repaints on busy CPUs.
added a timer to still force repaints every once in a while (roughly
5Hz atm) to avoid leaving the user without feedback on the range.
fixes bug #460534.
2007-09-06 Michael Natterer <mitch@imendio.com>
* demos/gtk-demo/panes.c: s/gtk_widget_[un]ref/g_object_[un]ref/g

34
gtk/gtkrange.c
View File

@ -107,6 +107,7 @@ struct _GtkRangeLayout
GtkSensitivityType lower_sensitivity;
GtkSensitivityType upper_sensitivity;
guint repaint_id;
gdouble fill_level;
};
@ -1168,6 +1169,10 @@ gtk_range_destroy (GtkObject *object)
gtk_range_remove_step_timer (range);
gtk_range_remove_update_timer (range);
if (range->layout->repaint_id)
g_source_remove (range->layout->repaint_id);
range->layout->repaint_id = 0;
if (range->adjustment)
{
g_signal_handlers_disconnect_by_func (range->adjustment,
@ -1402,7 +1407,7 @@ static gboolean
gtk_range_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkRange *range;
GtkRange *range = GTK_RANGE (widget);
gboolean sensitive;
GtkStateType state;
GtkShadowType shadow_type;
@ -1415,16 +1420,16 @@ gtk_range_expose (GtkWidget *widget,
g_object_get (gtk_widget_get_settings (widget),
"gtk-touchscreen-mode", &touchscreen,
NULL);
range = GTK_RANGE (widget);
if (GTK_WIDGET_CAN_FOCUS (range))
{
gtk_widget_style_get (GTK_WIDGET (range),
"focus-line-width", &focus_line_width,
"focus-padding", &focus_padding,
NULL);
}
/* we're now exposing, so there's no need to force early repaints */
if (range->layout->repaint_id)
g_source_remove (range->layout->repaint_id);
range->layout->repaint_id = 0;
expose_area = event->area;
expose_area.x -= widget->allocation.x;
@ -2266,6 +2271,16 @@ gtk_range_adjustment_changed (GtkAdjustment *adjustment,
*/
}
static gboolean
force_repaint (gpointer data)
{
GtkRange *range = GTK_RANGE (data);
range->layout->repaint_id = 0;
if (GTK_WIDGET_DRAWABLE (range))
gdk_window_process_updates (GTK_WIDGET (range)->window, FALSE);
return FALSE;
}
static void
gtk_range_adjustment_value_changed (GtkAdjustment *adjustment,
gpointer data)
@ -2281,10 +2296,9 @@ gtk_range_adjustment_value_changed (GtkAdjustment *adjustment,
if (layout_changed (range->layout, &layout))
{
gtk_widget_queue_draw (GTK_WIDGET (range));
/* This is so we don't lag the widget being scrolled. */
if (GTK_WIDGET_REALIZED (range))
gdk_window_process_updates (GTK_WIDGET (range)->window, FALSE);
/* setup a timer to ensure the range isn't lagging too much behind the scroll position */
if (!range->layout->repaint_id)
range->layout->repaint_id = gdk_threads_add_timeout_full (GDK_PRIORITY_EVENTS, 181, force_repaint, range, NULL);
}
/* Note that we don't round off to range->round_digits here.