book_element.py 文件源码

def _on_leave_notify(self, widget, event):
        """
        On leave notify change overlay opacity
        :param widget: as Gtk.EventBox (can be None)
        :param event: as Gdk.Event (can be None)
        """
        if not self.selected:
            self.overlay.set_opacity(1.0)
            self.play_revealer.set_reveal_child(False)