[gnome-music] albumsview: Add TOUCH_MASK event

[Marinus Schraal <mschraal src gnome org>]

commit 31e890efc3c90f542dbfa9650bb3650ca7b287a4
Author: Jan-Michael Brummer <jan brummer tabos org>
Date:   Sun Sep 3 13:28:54 2017 +0200

    albumsview: Add TOUCH_MASK event
    
    Adding TOUCH_MASK to events box fixes album scrolling on wayland. It is
    now possible to start scrolling on album covers without entering the
    selected album.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=780548

 gnomemusic/views/albumsview.py |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/gnomemusic/views/albumsview.py b/gnomemusic/views/albumsview.py
index 74e314b..96e7156 100644
--- a/gnomemusic/views/albumsview.py
+++ b/gnomemusic/views/albumsview.py
@@ -23,7 +23,7 @@
 # delete this exception statement from your version.
 
 from gettext import gettext as _
-from gi.repository import GLib, GObject, Gtk
+from gi.repository import GLib, GObject, Gtk, Gdk
 
 from gnomemusic import log
 from gnomemusic.albumartcache import ArtSize
@@ -176,6 +176,8 @@ class AlbumsView(BaseView):
         child.image.set_property("width-request", ArtSize.medium.width)
         child.image.set_property("height-request", ArtSize.medium.height)
 
+        child.events.add_events(Gdk.EventMask.TOUCH_MASK)
+
         child.events.connect('button-release-event',
                              self._on_album_event_triggered,
                              child)