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, 2 deletions

diff --git a/apps/tree.h b/apps/tree.h
index 56fdb2e0bb..bb9ff87163 100644
--- a/apps/tree.h
+++ b/apps/tree.h
@@ -102,7 +102,7 @@ struct entry* tree_get_entries(struct tree_context *t);
 struct entry* tree_get_entry_at(struct tree_context *t, int index);
 
 void tree_mem_init(void) INIT_ATTR;
-void tree_gui_init(void) INIT_ATTR;
+void tree_init(void) INIT_ATTR;
 char* get_current_file(char* buffer, size_t buffer_len);
 void set_dirfilter(int l_dirfilter);
 void set_current_file(const char *path);
@@ -133,5 +133,4 @@ void tree_restore(void);
 bool bookmark_play(char* resume_file, int index, unsigned long elapsed,
                    unsigned long offset, int seed, char *filename);
 
-extern struct gui_synclist tree_lists;
 #endif