[gnome-games/wip/exalm/spinner: 6/10] fixme: A hack for crossfade

[Alexander Mikhaylenko <alexm src gnome org>]

commit cb3b9f605fee8ae8517e86836d7391f7f80882c9
Author: Alexander Mikhaylenko <exalm7659 gmail com>
Date:   Sat Oct 6 23:37:57 2018 +0500

    fixme: A hack for crossfade
    
    The main stacks don't use transition by default. However, we want it to
    happen for loading state. One solution would be to enable it generally,
    but this one enables it only while switching from loading to collection
    initially. :(

 src/ui/application-window.vala | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/ui/application-window.vala b/src/ui/application-window.vala
index 0e7cf867..485ccb17 100644
--- a/src/ui/application-window.vala
+++ b/src/ui/application-window.vala
@@ -718,11 +718,15 @@ private class Games.ApplicationWindow : Gtk.ApplicationWindow {
        }
 
        public void on_collection_loaded () {
+               content_box.transition_type = Gtk.StackTransitionType.CROSSFADE;
+               header_bar.transition_type = Gtk.StackTransitionType.CROSSFADE;
                if (game_to_run != null) {
                        ui_state = UiState.DISPLAY;
                        run_game (game_to_run);
                        game_to_run = null;
                } else
                        ui_state = UiState.COLLECTION;
+               content_box.transition_type = Gtk.StackTransitionType.NONE;
+               header_bar.transition_type = Gtk.StackTransitionType.NONE;
        }
 }