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Reduce roundtrips

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Setting a tooltip on a widget unfortunately triggers several roundtrips
to the X server. We reduce this overhead by only doing it if the
widget is visible, and by deferring to an idle. See bug 585626.
This commit is contained in:
Matthias Clasen 2009-06-20 13:54:33 -04:00
parent 374aa04954
commit 0f00d3fdb0
1 changed files with 41 additions and 8 deletions
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49
gtk/gtkwidget.c
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@ -274,6 +274,7 @@ static void gtk_widget_buildable_custom_finished (GtkBuildable
static void gtk_widget_buildable_parser_finished (GtkBuildable *buildable,
GtkBuilder *builder);
static void gtk_widget_queue_tooltip_query (GtkWidget *widget);
static void gtk_widget_set_usize_internal (GtkWidget *widget,
gint width,
@ -2488,17 +2489,18 @@ gtk_widget_set_property (GObject *object,
* because an empty string would be useless for a tooltip:
*/
if (tooltip_markup && (strlen (tooltip_markup) == 0))
{
g_free (tooltip_markup);
tooltip_markup = NULL;
}
{
g_free (tooltip_markup);
tooltip_markup = NULL;
}
g_object_set_qdata_full (object, quark_tooltip_markup,
tooltip_markup, g_free);
tmp = (tooltip_window != NULL || tooltip_markup != NULL);
gtk_widget_real_set_has_tooltip (widget, tmp, FALSE);
gtk_widget_trigger_tooltip_query (widget);
if (GTK_WIDGET_VISIBLE (widget))
gtk_widget_queue_tooltip_query (widget);
break;
case PROP_TOOLTIP_TEXT:
tooltip_window = g_object_get_qdata (object, quark_tooltip_window);
@ -2518,7 +2520,8 @@ gtk_widget_set_property (GObject *object,
tmp = (tooltip_window != NULL || tooltip_markup != NULL);
gtk_widget_real_set_has_tooltip (widget, tmp, FALSE);
gtk_widget_trigger_tooltip_query (widget);
if (GTK_WIDGET_VISIBLE (widget))
gtk_widget_queue_tooltip_query (widget);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@ -10144,8 +10147,8 @@ gtk_widget_set_tooltip_window (GtkWidget *widget,
has_tooltip = (custom_window != NULL || tooltip_markup != NULL);
gtk_widget_real_set_has_tooltip (widget, has_tooltip, FALSE);
if (has_tooltip)
gtk_widget_trigger_tooltip_query (widget);
if (has_tooltip && GTK_WIDGET_VISIBLE (widget))
gtk_widget_queue_tooltip_query (widget);
}
/**
@ -10184,6 +10187,36 @@ gtk_widget_trigger_tooltip_query (GtkWidget *widget)
gtk_tooltip_trigger_tooltip_query (gtk_widget_get_display (widget));
}
static guint tooltip_query_id;
static GSList *tooltip_query_displays;
static gboolean
tooltip_query_idle (gpointer data)
{
g_slist_foreach (tooltip_query_displays, (GFunc)gtk_tooltip_trigger_tooltip_query, NULL);
g_slist_foreach (tooltip_query_displays, (GFunc)g_object_unref, NULL);
g_slist_free (tooltip_query_displays);
tooltip_query_displays = NULL;
tooltip_query_id = 0;
return FALSE;
}
static void
gtk_widget_queue_tooltip_query (GtkWidget *widget)
{
GdkDisplay *display;
display = gtk_widget_get_display (widget);
if (!g_slist_find (tooltip_query_displays, display))
tooltip_query_displays = g_slist_prepend (tooltip_query_displays, g_object_ref (display));
if (tooltip_query_id == 0)
tooltip_query_id = gdk_threads_add_idle (tooltip_query_idle, NULL);
}
/**
* gtk_widget_set_tooltip_text:
* @widget: a #GtkWidget