[gnome-music/wip/jfelder/event-controller-key: 3/3] songwidget: Use a controller to handle star hover effect

[Jean Felder <jfelder src gnome org>]

commit c0e7a7faba1a85ad60cce2b70d29b6114deb9081
Author: Jean Felder <jfelder src gnome org>
Date:   Wed Mar 24 21:06:44 2021 +0100

    songwidget: Use a controller to handle star hover effect
    
    The "enter-notify-event" and "leave-notify-event" signals have been
    removed from GTK4. Use a controller instead.

 data/ui/SongWidget.ui            | 7 +++++--
 gnomemusic/widgets/songwidget.py | 5 +++--
 2 files changed, 8 insertions(+), 4 deletions(-)
---
diff --git a/data/ui/SongWidget.ui b/data/ui/SongWidget.ui
index 8280ce9db..deae1890c 100644
--- a/data/ui/SongWidget.ui
+++ b/data/ui/SongWidget.ui
@@ -165,8 +165,6 @@
                 <property name="visible_window">True</property>
                 <property name="margin_right">12</property>
                 <signal name="button-release-event" handler="_on_star_toggle" swapped="no"/>
-                <signal name="enter-notify-event" handler="_on_star_hover" swapped="no"/>
-                <signal name="leave-notify-event" handler="_on_star_unhover" swapped="no"/>
                 <child>
                   <object class="StarImage" id="_star_image">
                     <property name="visible">True</property>
@@ -202,4 +200,9 @@
       <widget name="_album_duration_box"/>
     </widgets>
   </object>
+  <object class="GtkEventControllerMotion" id="_controller_motion">
+    <property name="widget">_star_eventbox</property>
+    <signal name="enter" handler="_on_star_hover" swapped="no"/>
+    <signal name="leave" handler="_on_star_unhover" swapped="no"/>
+  </object>
 </interface>
diff --git a/gnomemusic/widgets/songwidget.py b/gnomemusic/widgets/songwidget.py
index 73b35e1a7..2a1d61776 100644
--- a/gnomemusic/widgets/songwidget.py
+++ b/gnomemusic/widgets/songwidget.py
@@ -63,6 +63,7 @@ class SongWidget(Gtk.EventBox):
     _album_duration_box = Gtk.Template.Child()
     _artist_box = Gtk.Template.Child()
     _artist_label = Gtk.Template.Child()
+    _controller_motion = Gtk.Template.Child()
     _dnd_eventbox = Gtk.Template.Child()
     _select_button = Gtk.Template.Child()
     _number_label = Gtk.Template.Child()
@@ -215,11 +216,11 @@ class SongWidget(Gtk.EventBox):
         return True
 
     @Gtk.Template.Callback()
-    def _on_star_hover(self, widget, event):
+    def _on_star_hover(self, controller, x, y):
         self._star_image.props.hover = True
 
     @Gtk.Template.Callback()
-    def _on_star_unhover(self, widget, event):
+    def _on_star_unhover(self, controller):
         self._star_image.props.hover = False
 
     @GObject.Property(type=bool, default=False)