better main menu refreshing

1 files changed, 11 insertions, 5 deletions

diff --git a/menus.c b/menus.c
index 8a33f4d..3179abf 100644
--- a/menus.c
+++ b/menus.c
@@ -214,7 +214,6 @@ static void Read_Keypad(int *button_port_val, int *upper_encoder_val, int *lower
 void Menu_Refresh()
 {
 	globals.Changes.update_whole_main_menu = YES;
-	LCD_clear();
 	Menu_Update_Display();
 }
 
@@ -237,10 +236,18 @@ void Menu_Update_Display(void)
 	int show_item;
 	int old_cursor_pos;
 
+        if (    (globals.MenuStatus.Type_Of_Menu != Main_Menu_On) ||
+                (globals.MenuStatus.Error_Screen == YES) ||
+                (globals.MenuStatus.Nonstd_Display == YES) ) {
+                LCD_clear();
+		globals.Changes.update_whole_main_menu = TRUE;
+        }
+
 	LCD_entry=-1;
 	sig_dig = 4;
-	globals.MenuStatus.Type_Of_Menu=Main_Menu_On;
 	Submenu_extra_fine=NO;
+
+	globals.MenuStatus.Type_Of_Menu=Main_Menu_On;
 	globals.MenuStatus.Error_Screen=NO;
 	globals.MenuStatus.Nonstd_Display=NO;
 
@@ -1067,9 +1074,7 @@ static void Menu_Move_Pointer(int move_amount)
 	new_page=menu_cursor_pos / LCD_max_entries_per_page;
 
 	if (new_page!=old_page) {
-		globals.Changes.update_whole_main_menu=YES;
-		LCD_clear();
-		Menu_Update_Display();
+		Menu_Refresh();
 	}
 
 }
@@ -1246,6 +1251,7 @@ static void Submenu_Display(int redraw)
 
 	current_operating_mode=0;
 
+	// FIXME - check for redundant clearing
         if (    (globals.MenuStatus.Type_Of_Menu != Submenu_On) ||
                 (globals.MenuStatus.Error_Screen == YES) ||
                 (globals.MenuStatus.Nonstd_Display == YES) ||