IMPLEMENTATION MODULE MsgBox1;
(*
 *  REPERTOIRE
 *  Release 1.6
 *  By Charles Bradford and Cole Brecheen
 *  (c) Copyright 1985-1992 PMI
 *  Green Bay, Wisconsin
 *  All rights reserved
 *  (414) 468-6040
 *
 *  $Header:   D:/logfiles/mods/msgbox1.mov   1.5   10 Mar 1991 15:29:44   coleb  $
 *
 *)



IMPORT GenLists;
IMPORT KbdInput;
IMPORT ListUtils;
IMPORT LowLevel;
IMPORT Numbers;
IMPORT NumTypes;
IMPORT SmartScreen;
IMPORT SYSTEM;
IMPORT VWindows;
IMPORT WindowPrims;

VAR
  Initialized : BOOLEAN;

  PROCEDURE Init();
    BEGIN
      IF Initialized THEN
        RETURN;
      ELSE
        Initialized := TRUE;
      END;
      GenLists.Init();
      KbdInput.Init();
      ListUtils.Init();
      LowLevel.Init();
      Numbers.Init();
      NumTypes.Init();
      SmartScreen.Init();
      VWindows.Init();
      WindowPrims.Init();
    END Init;

CONST
  lftcol = 4;
  toprow = 3;
  rtcol = 44;
  btmrow = 14;
  midcol = 24;
  midrow = 9;

    (* These define the starting points for the 4 msg box areas *)


  PROCEDURE FindCoords( locatn: VWindows.Compass; MaxWidth,
      MaxHeight: CARDINAL; VAR col1, row1, col2, row2: CARDINAL );
    BEGIN
      CASE locatn OF
        VWindows.West, VWindows.NW, VWindows.SW :
        col1 := lftcol;
      | VWindows.North, VWindows.South :
        col1 := midcol;
      | VWindows.East, VWindows.NE, VWindows.SE :
        col1 := rtcol;
      END;
      CASE locatn OF
        VWindows.North, VWindows.NW, VWindows.NE :
        row1 := toprow;
      | VWindows.East, VWindows.West :
        row1 := midrow;
      | VWindows.South, VWindows.SE, VWindows.SW :
        row1 := btmrow;
      END;
      col2 := col1 + MaxWidth + 3;
      row2 := row1 + MaxHeight + 3;
    END FindCoords;


  PROCEDURE NullScan( StrAddr: SYSTEM.ADDRESS ): CARDINAL;
    BEGIN
      RETURN LowLevel.ScanEQ( 32767, 0C, StrAddr );
    END NullScan;


  PROCEDURE WinMsgBox( TheWindow: VWindows.AWindowHandle;
      TextPtr: SYSTEM.ADDRESS; CaptionPtr: SYSTEM.ADDRESS;
      WinType: CARDINAL ): CARDINAL;
    VAR
      TxtLngth, CaptionLngth: CARDINAL;
      TmpList: GenLists.GenList;
      KeyPressed: CARDINAL;
    BEGIN
      TxtLngth := NullScan( TextPtr );
      CaptionLngth := NullScan( CaptionPtr );
      GenLists.NewList( TmpList );
      GenLists.ListInsertAdr( TextPtr, TxtLngth,
          GenLists.StrCode, TmpList, 1 );
      ListMsgBox( VWindows.NE, TmpList, KbdInput.AnyKeyNum,
          KeyPressed );
      GenLists.DisposeList( TmpList );
      RETURN KeyPressed;
    END WinMsgBox;


  PROCEDURE ListMsgBox(locatn : VWindows.Compass; TheList :
      GenLists.GenList; LegalKeys: KbdInput.KeyNumSet; VAR KeyPressed :
      CARDINAL);
    VAR
      leng, breakspot, lastbreak, LinesAdded, BytesAdded : INTEGER;
      StartLine, CursorLine, CursorCol, LstLngth, maxleng, newleng, i,
          col1, row1, col2, row2, rowspot, colspot: CARDINAL;
      BytePos : LONGINT;
      screen : WindowPrims.ScreenType;
      TmpAdr: SYSTEM.ADDRESS;
      TypeCode, TmpSize: CARDINAL;

    BEGIN
      WindowPrims.PushColors();
      WindowPrims.PushCursorCoords();
      WindowPrims.PushCursorHeight();
      SmartScreen.SetCursorHeight(0);
      SmartScreen.SetAttribOrColor( WindowPrims.MsgForeColor,
          WindowPrims.MsgBackColor, WindowPrims.MsgMonoAtrib );
      maxleng := Numbers.Min( ListUtils.LongestLine(
          TheList ), SmartScreen.MaxCol - rtcol - 3 );

      StartLine := 1;
      CursorLine := 1;
      CursorCol := 1;
      BytePos := NumTypes.L0;
      ListUtils.ReformPara( TheList, 0, maxleng - 2, StartLine,
          CursorLine, CursorCol, LinesAdded, BytesAdded, BytePos );

      LstLngth := Numbers.Min( GenLists.ListLength(
          TheList ), SmartScreen.MaxRow - btmrow - 3 );
      FindCoords( locatn, maxleng, LstLngth, col1, row1, col2, row2 );
      WindowPrims.ScreenSave(screen, col1, row1, col2, row2 );
      SmartScreen.ClearPart(col1, row1, col2, row2);
        (* save & clear an area of the required size *)
      WindowPrims.DrawThisBox( WindowPrims.SingleBox, col1, row1,
          col2, row2 );
      (* draw a box of the required size *)
      colspot := col1+2;
      rowspot := row1+1;
      FOR i := 1 TO LstLngth DO
        (* write text in window *)
        GenLists.GetElmtAdr( TheList, i, TmpAdr, TmpSize, TypeCode );
        TmpSize := ListUtils.ElmtSize( TheList, i );
        IF TypeCode = GenLists.StrCode THEN
          SmartScreen.AdrWriteAt( colspot, rowspot+i, TmpAdr, TmpSize );
        END;
      END;
      KeyPressed := KbdInput.KeyHit( LegalKeys );
      WindowPrims.ScreenRestore(screen, col1, row1);
      WindowPrims.PopCursorCoords();
      WindowPrims.PopCursorHeight();
      WindowPrims.PopColors();
      (* restore screen, cursor, and mode *)
    END ListMsgBox;


BEGIN
  Initialized := FALSE;
  Init();
END MsgBox1.