App: Periodic commands without timers/threads

Now the periodic commands get posted on the main thread at intervals, and the event loop cooperates by not sleeping if there are periodic commands pending.

The macOS animation hangup seems to be unrelated, though — perhaps some internal SDL/Metal machinery related to app refresh stopping for a while?

1 files changed, 1 insertions, 1 deletions

diff --git a/src/ui/scrollwidget.c b/src/ui/scrollwidget.c
index b5b204a1..55ede426 100644
--- a/src/ui/scrollwidget.c
+++ b/src/ui/scrollwidget.c
@@ -112,7 +112,7 @@ static void unfade_ScrollWidget_(iScrollWidget *d, float opacity) {
         d->willCheckFade = iTrue;
         /* TODO: This causes an inexplicable refresh issue on macOS: the drawing of one frame
            takes 100ms for some reason (not the current frame but some time after). */
-//        add_Periodic(periodic_App(), d, "scrollbar.fade");
+        add_Periodic(periodic_App(), d, "scrollbar.fade");
     }
     refresh_Widget(d);
 }