[totem] backend: Use swipe gestures to seek

[Bastien Nocera <hadess src gnome org>]

commit ec8db6122739358412ed91bbc63b514abfc8007c
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Feb 11 13:34:21 2014 +0100

    backend: Use swipe gestures to seek
    
    1-finger Swipe right/left -> skip (same as right/left arrows)
    
    https://bugzilla.gnome.org/show_bug.cgi?id=697896

 src/backend/bacon-video-widget.c |   30 ++++++++++++++++++++++++++++++
 1 files changed, 30 insertions(+), 0 deletions(-)
---
diff --git a/src/backend/bacon-video-widget.c b/src/backend/bacon-video-widget.c
index a5d523d..faeed88 100644
--- a/src/backend/bacon-video-widget.c
+++ b/src/backend/bacon-video-widget.c
@@ -865,6 +865,30 @@ bacon_video_widget_tap (ClutterTapAction *action,
 }
 
 static gboolean
+bacon_video_widget_swipe (ClutterTapAction      *action,
+                         ClutterActor          *actor,
+                         ClutterSwipeDirection  direction,
+                         BaconVideoWidget      *bvw)
+{
+    GST_DEBUG ("Swipe event received");
+
+    if ((direction & CLUTTER_SWIPE_DIRECTION_UP) ||
+       (direction & CLUTTER_SWIPE_DIRECTION_DOWN)) {
+      if ((direction & CLUTTER_SWIPE_DIRECTION_LEFT) ||
+         (direction & CLUTTER_SWIPE_DIRECTION_RIGHT))
+       GST_DEBUG ("Ignoring diagonal swipe 0x%X", direction);
+       return CLUTTER_EVENT_PROPAGATE;
+    }
+
+    if (direction & CLUTTER_SWIPE_DIRECTION_LEFT)
+      g_signal_emit (G_OBJECT (bvw), bvw_signals[SIGNAL_SEEK_REQUESTED], 0, FALSE);
+    if (direction & CLUTTER_SWIPE_DIRECTION_RIGHT)
+      g_signal_emit (G_OBJECT (bvw), bvw_signals[SIGNAL_SEEK_REQUESTED], 0, TRUE);
+
+    return CLUTTER_EVENT_STOP;
+}
+
+static gboolean
 bacon_video_widget_handle_scroll (GtkWidget        *widget,
                                  GdkEventScroll   *event,
                                  BaconVideoWidget *bvw)
@@ -6336,6 +6360,12 @@ bacon_video_widget_initable_init (GInitable     *initable,
   g_signal_connect (action, "tap",
                    G_CALLBACK (bacon_video_widget_tap), bvw);
 
+  action = clutter_swipe_action_new ();
+  clutter_gesture_action_set_threshold_trigger_distance (CLUTTER_GESTURE_ACTION (action), 80.0, 80.0);
+  clutter_actor_add_action (bvw->priv->texture, action);
+  g_signal_connect (action, "swipe",
+                   G_CALLBACK (bacon_video_widget_swipe), bvw);
+
   /* The spinner */
   bvw->priv->spinner = bacon_video_spinner_actor_new ();
   clutter_actor_set_name (bvw->priv->spinner, "spinner");