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[hackover2013-badge-firmware.git] / badge / ui / menu.c

diff --git a/badge/ui/menu.c b/badge/ui/menu.c
index e4eaac7..0627a10 100644 (file)
--- a/badge/ui/menu.c
+++ b/badge/ui/menu.c
@@ -65,12 +65,12 @@ static void badge_menu_show(char const *const *menu,
 }
 
 size_t badge_menu(char const *const *menu,
-                   size_t n,
-                   size_t first_visible,
-                   size_t selected)
+                   size_t  n,
+                   size_t *first_visible,
+                   size_t  selected)
 {
   for(;;) {
-    badge_menu_show(menu, n, first_visible, selected);
+    badge_menu_show(menu, n, *first_visible, selected);
 
     badge_event_t ev;
 
@@ -86,13 +86,13 @@ size_t badge_menu(char const *const *menu,
       return selected;
     } else if((new_buttons & BADGE_EVENT_KEY_UP  ) && selected != 0) {
       --selected;
-      if(first_visible != 0 && selected <= first_visible) {
-        first_visible = selected - 1;
+      if(*first_visible != 0 && selected <= *first_visible) {
+        *first_visible = selected - 1;
       }
     } else if(new_buttons & BADGE_EVENT_KEY_DOWN && selected + 1 < n) {
       ++selected;
-      if(first_visible + (MENU_ENTRIES_VISIBLE - 2 + (selected + 1 == n)) < selected) {
-        first_visible = selected - (MENU_ENTRIES_VISIBLE - 2 + (selected + 1 == n));
+      if(*first_visible + (MENU_ENTRIES_VISIBLE - 2 + (selected + 1 == n)) < selected) {
+        *first_visible = selected - (MENU_ENTRIES_VISIBLE - 2 + (selected + 1 == n));
       }
     }
   }