Tree / Playlist Viewer / Menu: Fix redraw issues

1) Tree_lists was only initialized when booting the player.

In cases where a skin used custom UI viewports of
different sizes, when switching between screens, such as
between root menu, QuickScreen, and tree browser, this
caused list titles to appear with a significant delay,
unless a GUI_EVENT_ACTIONUPDATE was sent.

Tree_lists is now initialized when entering dirbrowse
or when restoring/reloading the list.

This eliminates multiple redundant UI refreshes when
entering the tree browser, due to gui_synclist_draw not
being called twice anymore and by being able to omit
GUI_EVENT_ACTIONUPDATE.

Separate calls to gui_synclist_init_display_settings
have become unnecessary since it is already called
by gui_synclist_init.

2) The synclist is also re-initialized when returning
from the QuickScreen in the Playlist Viewer or
regular menus, or when returning from Settings
menus

Change-Id: I2884249eda55f782e97abad9dc19b3d9d1267fc9

1 files changed, 1 insertions, 1 deletions

diff --git a/apps/playlist_viewer.c b/apps/playlist_viewer.c
index 8f1c5d961d..4abd3ee1c5 100644
--- a/apps/playlist_viewer.c
+++ b/apps/playlist_viewer.c
@@ -1017,7 +1017,7 @@ enum playlist_viewer_result playlist_viewer_ex(const char* filename,
                     {
                         quick_screen_quick(button);
                         update_playlist(true);
-                        update_lists(&playlist_lists);
+                        prepare_lists(&playlist_lists);
                     }
                     break;
 #endif