+/* Autohide */
+typedef struct {
+ GtkWidget *widget;
+ GtkWidget *window;
+ GtkPositionType position;
+ gulong handler;
+} GtkAutohideData;
+static gboolean _gtk_widget_autohide_cb(GtkWidget *win,
+ GdkEventMotion *event, GtkAutohideData *data)
+{
+ GtkAllocation alloc;
+ gtk_widget_get_allocation(data->window, &alloc);
+ if (data->position == GTK_POS_BOTTOM)
+ g_debug("GtkWidget: autohide_cb - y=%lf, h=%d", event->y, alloc.height);
+ gint position = -1;
+ if (event->x < 20) position = GTK_POS_LEFT;
+ if (event->y < 20) position = GTK_POS_TOP;
+ if (event->x > alloc.width - 20) position = GTK_POS_RIGHT;
+ if (event->y > alloc.height - 20) position = GTK_POS_BOTTOM;
+ if (position == data->position)
+ gtk_widget_show(data->widget);
+ else
+ gtk_widget_hide(data->widget);
+ return FALSE;
+}
+static void _gtk_widget_autohide(GtkWidget *widget, GtkWidget *viewer,
+ GtkPositionType position)
+{
+ GtkAutohideData *data = g_new0(GtkAutohideData, 1);
+ data->widget = widget;
+ data->position = position;
+ data->window = viewer;
+ data->handler = g_signal_connect(data->window, "motion-notify-event",
+ G_CALLBACK(_gtk_widget_autohide_cb), data);
+ g_object_set_data(G_OBJECT(widget), "autohidedata", data);
+ gtk_widget_hide(widget);
+}
+static void _gtk_widget_autoshow(GtkWidget *widget)
+{
+ GtkAutohideData *data = g_object_get_data(G_OBJECT(widget), "autohidedata");
+ g_signal_handler_disconnect(data->window, data->handler);
+ g_free(data);
+ gtk_widget_show(widget);
+}