OSDMenuFindPreviousSelectableEntry.c

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#include                "FBLib_TMSOSDMenu.h"
 
int OSDMenuFindPreviousSelectableEntry(int CurrentSelection)
{
  TRACEENTER();
 
  tMenu                *pMenu;
  int                   i, Cnt;
 
  pMenu = &Menu[CurrentMenuLevel];
 
  if((CurrentSelection < 0) && !pMenu->ScrollLoop)
  {
    TRACEEXIT();
    return -1;
  }
 
  //Count the number of selectable EndMessageWin
  Cnt = 0;
  for(i = 0; i < pMenu->NrItems; i++)
  {
    if(pMenu->Item[i].Selectable) Cnt++;
  }
  if(Cnt == 0)
  {
    TRACEEXIT();
    return -1;
  }
 
  do
  {
    CurrentSelection--;
    if(CurrentSelection < 0)
    {
      if(pMenu->ScrollLoop)
        CurrentSelection = pMenu->NrItems - 1;
      else
      {
        TRACEEXIT();
        return -1;
      }
    }
  } while(!pMenu->Item[CurrentSelection].Selectable);
 
 
  TRACEEXIT();
  return CurrentSelection;
}