[gnome-music/wip/mschraal/gtk4: 136/141] smoothscale: Fix event controller

[Marinus Schraal <mschraal src gnome org>]

commit dc08d570bae7d62ecc24513a38f559386066ddec
Author: Marinus Schraal <mschraal gnome org>
Date:   Thu Nov 7 00:09:50 2019 +0100

    smoothscale: Fix event controller

 gnomemusic/widgets/smoothscale.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/gnomemusic/widgets/smoothscale.py b/gnomemusic/widgets/smoothscale.py
index 6f0b46b2..bd266e56 100644
--- a/gnomemusic/widgets/smoothscale.py
+++ b/gnomemusic/widgets/smoothscale.py
@@ -46,10 +46,10 @@ class SmoothScale(Gtk.Scale):
 
         self._timeout = None
 
-        self._controller = Gtk.GestureClick.new()
-        self._controller.props.propagation_phase = Gtk.PropagationPhase.CAPTURE
-        self._controller.connect("pressed", self._on_button_pressed)
-        self._controller.connect("released", self._on_button_released)
+        ctrl = Gtk.GestureClick()
+        ctrl.connect("pressed", self._on_button_pressed)
+        ctrl.connect("released", self._on_button_released)
+        self.add_controller(ctrl)
 
         self.connect('change-value', self._on_smooth_scale_seek)