1 files changed, 85 insertions, 0 deletions
diff --git a/libslab/double-click-detector.c b/libslab/double-click-detector.c
new file mode 100644
index 00000000..64ed58e8
--- /dev/null
+++ b/libslab/double-click-detector.c
@@ -0,0 +1,85 @@
+/*
+ * This file is part of libslab.
+ *
+ * Copyright (c) 2006, 2007 Novell, Inc.
+ *
+ * Libslab is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU Lesser General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * Libslab is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libslab; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "double-click-detector.h"
+
+#include <gtk/gtk.h>
+
+#include "libslab-utils.h"
+
+G_DEFINE_TYPE (DoubleClickDetector, double_click_detector, G_TYPE_OBJECT);
+
+static void
+double_click_detector_class_init (DoubleClickDetectorClass * detector_class)
+{
+}
+
+static void
+double_click_detector_init (DoubleClickDetector * detector)
+{
+	GtkSettings *settings;
+	gint click_interval;
+
+	settings = gtk_settings_get_default ();
+
+	g_object_get (G_OBJECT (settings), "gtk-double-click-time", &click_interval, NULL);
+
+	detector->double_click_time = (guint32) click_interval;
+	detector->last_click_time = 0;
+}
+
+DoubleClickDetector *
+double_click_detector_new ()
+{
+	return g_object_new (DOUBLE_CLICK_DETECTOR_TYPE, NULL);
+}
+
+gboolean
+double_click_detector_is_double_click (DoubleClickDetector *this, guint32 event_time,
+                                       gboolean auto_update)
+{
+	gint32 delta;
+
+	if (event_time <= 0)
+		event_time = libslab_get_current_time_millis ();
+
+	if (this->last_click_time <= 0) {
+		if (auto_update)
+			double_click_detector_update_click_time (this, event_time);
+
+		return FALSE;
+	}
+
+	delta = event_time - this->last_click_time;
+
+	if (auto_update)
+		double_click_detector_update_click_time (this, event_time);
+
+	return delta < this->double_click_time;
+}
+
+void
+double_click_detector_update_click_time (DoubleClickDetector *this, guint32 event_time)
+{
+	if (event_time <= 0)
+		event_time = libslab_get_current_time_millis ();
+
+	this->last_click_time = event_time;
+}