IMPLEMENTATION MODULE Globals;
(*
        Copyright (C) 1988,1989 Jensen & Partners International
*)

IMPORT Lib, Window, IO, Btree, Str, Misc;

VAR
  LastH, LastM : CARDINAL;


PROCEDURE Beep();
BEGIN
    Lib.Speaker(1500,10);
END Beep;


PROCEDURE WriteAt( row, col : CARDINAL;  txt : ARRAY OF CHAR);
BEGIN
    Window.GotoXY(col,row);
    IO.WrStr(txt);
END WriteAt;


PROCEDURE GetMenu ( Prompt : ARRAY OF CHAR;  OKChars : CharSet;
                    VAR ch : CHAR);
VAR
  OK    : BOOLEAN;
  oldWin, MenuWin : Window.WinType;
  i : CARDINAL;
BEGIN
    oldWin := Window.Used();
    MenuWin := Window.Open( Window.WinDef( 0, 22, 79, 24,
            Window.White,Window.Black,TRUE,FALSE,TRUE,TRUE,
            Window.SingleFrame,Window.White,Window.Black) );
    i := Str.Length(Prompt);
    Window.Change(MenuWin,((80-i) DIV 2) -2,22, ((80-i) DIV 2) + i + 3, 24);
    Window.SetFrame(MenuWin,Window.SingleFrame,DisplayBorder,Window.Black);
    Window.Use(MenuWin);
    Window.PutOnTop(MenuWin);
    Window.TextColor(DisplayFore);
    Window.TextBackground(DisplayBack);
    IO.WrStr("  ");
    IO.WrStr(Prompt);
    OK := FALSE;
    REPEAT
         REPEAT
            UpdateTitle(FALSE);
         UNTIL IO.KeyPressed();
         ch := CAP(IO.RdKey());
         IF ch IN OKChars THEN
            OK := TRUE;
         ELSE
            Beep();
         END;
    UNTIL OK;
    Window.Close(MenuWin);
    Window.Use(oldWin);
    Window.PutOnTop(oldWin);
END GetMenu;


PROCEDURE Compare(key1,key2: ADDRESS ): Btree.CmpRes;
BEGIN
  RETURN Btree.CmpRes(Str.Compare(FileKey(key1^),FileKey(key2^))+1);
END Compare;


PROCEDURE UpdateTitle( All : BOOLEAN );
VAR
   y, m, d : CARDINAL;
   dow : Lib.DayType;
   H, M, S, h : CARDINAL;
   Am : BOOLEAN;
BEGIN
   oldWin := Window.Used();
   Window.Use(TitleWin);
   Window.CursorOff();
   Window.PutOnTop(TitleWin);
   IF All THEN
      Lib.GetDate(y, m, d, dow);
      Window.GotoXY(1,1);
      IO.WrCard(m,2);  IO.WrChar('/');
      IO.WrCard(d,2);  IO.WrChar('/');
      IO.WrCard(y,2);
      IF StoreName[0] > ' ' THEN
         h := Str.Length(StoreName);
         Window.GotoXY((79-h) DIV 2,1);
         IO.WrStr(StoreName);
      END;
   END;
   Lib.GetTime(H,M,S,h);
   IF (LastH # H) OR (LastM # M) THEN
      Window.GotoXY(70,1);
      IF H<12 THEN
         Am := TRUE;
      ELSE
         Am := FALSE;
         IF h # 12 THEN
           H := H - 12;
         END;
      END;
      IO.WrCard(H,2);  IO.WrChar(':');
      IO.WrCard(M,2);
      IF Am THEN
         IO.WrStr(" am");
      ELSE
         IO.WrStr(" pm");
      END;
      IF M<10 THEN
         Window.GotoXY(73,1);
         IO.WrChar('0');
      END;
      LastM := M;
      LastH := H;
   END;
   Window.Use(oldWin);
   Window.CursorOn();
   Window.PutOnTop(oldWin);
END UpdateTitle;


BEGIN

    (* set up default colors *)
    DisplayFore := Window.White;
    DisplayBack := Window.Blue;
    DataFore    := Window.Black;
    DataBack    := Window.Cyan;
    DisplayBorder := Window.LightRed;
    PromptFore  := Window.Yellow;
    PromptBack  := Window.Brown;

    TaxRate := 5.0;

    TitleWin := Window.Open( Window.WinDef( 0, 0, 79, 2,
       Window.White, Window.Black, TRUE, FALSE, TRUE, TRUE,
       Window.DoubleFrame, Window.White, Window.Black) );
    Window.SetFrame(TitleWin, Window.DoubleFrame, PromptFore,
       PromptBack);
    Window.Use(TitleWin);
    Window.Clear();

    DisplayWin := Window.Open( Window.WinDef( 0, 3, 79, 22,
       Window.White, Window.Black, TRUE, FALSE, TRUE, TRUE,
       Window.DoubleFrame, Window.White, Window.Black) );
    Window.SetFrame(DisplayWin, Window.DoubleFrame, DisplayBorder,
       DisplayBack);
    Window.Use(DisplayWin);
    Window.TextColor(DisplayFore);
    Window.TextBackground(DisplayBack);
    Window.Clear();
    LastH := 0;  LastM := 0;

END Globals.