Power-Programmierung/CD1.mdf/pascal/library/dos/tp6goodi/clocks/clockwrk.pas

Pascal/Delphi Source File | 1990-12-17 | 6.3 KB | 260 lines

program TestPlatform;

uses Objects, Drivers, Views, Menus, App,
     Dos,     { for the paramcount and paramstr funcs}
     Clocks;  { for the clock on the menubar object, TClockMenu }

{ This generic test platform has been hooked up to the clock-on-the-menubar
  object / unit.  Search for *** to find hook-up points.

  Copyright (c) 1990 by Danny Thorpe
}


const  cmNewWin =   100;
       cmFileOpen = 101;

       WinCount : Integer = 0;
       MaxLines = 50;


type  PInterior = ^TInterior;
      TInterior = object(TScroller)
        constructor init(var Bounds: TRect; AHScrollbar, AVScrollbar: PScrollbar);
        procedure Draw;  virtual;
        end;


      PDemoWindow = ^TDemoWindow;
      TDemoWindow = object(TWindow)
        constructor Init(WindowNo: integer);
        end;


      TMyApp = object(TApplication)
        procedure InitStatusLine;  virtual;
        procedure InitMenuBar;  virtual;
        procedure NewWindow;
        procedure HandleEvent( var Event: TEvent); virtual;
        procedure Idle; virtual;
        end;


var MyApp: TMyApp;
    Lines: array [0..MaxLines-1] of PString;
    LineCount: Integer;


constructor TInterior.Init(var Bounds: TRect; AHScrollbar, AVScrollbar: PScrollbar);
  begin
  TScroller.Init(Bounds,AHScrollbar,AVScrollbar);
  Growmode := gfGrowHiX + gfGrowHiY;
  Options := Options or ofFramed;
  SetLimit(128,LineCount);
  end;


procedure TInterior.Draw;
  var color: byte;
      y,i: integer;
      B: TDrawBuffer;

  begin
  TScroller.Draw;
  Color := GetColor($01);
  for y:= 0 to Size.Y -1 do
    begin
    MoveChar(B,' ',Color,Size.X);
    I := Delta.Y + Y;
    if (I<Linecount) and (Lines[I] <> nil) then
      MoveStr(B,Copy(Lines[I]^,Delta.X+1,size.x),Color);
    WriteLine(0,y,size.x,1,B);
    end;
  end;


procedure ReadFile;
  var  F: text;
       S: string;

  begin
  LineCount:=0;
  if paramcount = 0 then
    assign(F,'clockwrk.pas')
  else
    assign(F,paramstr(1));
  reset(F);
  while not eof(F) and (linecount < maxlines) do
    begin
    readln(f,s);
    Lines[Linecount] := NewStr(S);
    Inc(LineCount);
    end;
  Close(F);
  end;





constructor TDemoWindow.Init(WindowNo: Integer);
  var  LInterior, RInterior: PInterior;
       HScrollbar, VScrollbar: PScrollbar;
       R: TRect;
       Center: integer;

  begin
    R.Assign(0,0,40,15);
    R.Move(Random(40),Random(8));

    TWindow.Init(R, 'Window', wnNoNumber);
    GetExtent(R);
    Center:= (R.B.X + R.A.X) div 2;
    R.Assign(Center,R.A.Y+1,Center+1,R.B.Y-1);
    VScrollbar:= new(PScrollbar, Init(R));
    with VScrollbar^ do Options := Options or ofPostProcess;
    Insert(VScrollbar);
    GetExtent(R);
    R.Assign(R.A.X+2,R.B.Y-1,Center-1,R.B.Y);
    HScrollbar:= new(PScrollbar, Init(R));
    with HScrollbar^ do Options := Options or ofPostProcess;
    Insert(HScrollbar);
    GetExtent(R);
    R.Assign(R.A.X+1,R.A.Y+1,Center,R.B.Y-1);
    LInterior:= new(PInterior, Init(R, HScrollbar, VScrollbar));
    with LInterior^ do
      begin
      Options:= Options or ofFramed;
      Growmode:= GrowMode or gfGrowHiX;
      SetLimit(128,LineCount);
      end;
    Insert(LInterior);

    GetExtent(R);
    R.Assign(R.B.X-1,R.A.Y+1,R.B.X,R.B.Y-1);
    VScrollbar:= new(PScrollbar, Init(R));
    with VScrollbar^ do Options := Options or ofPostProcess;
    Insert(VScrollbar);
    GetExtent(R);
    R.Assign(Center+2,R.B.Y-1,R.B.X-2,R.B.Y);
    HScrollbar:= new(PScrollbar, Init(R));
    with HScrollbar^ do
      begin
      Options := Options or ofPostProcess;
      GrowMode:= GrowMode or gfGrowLoX;
      end;
    Insert(HScrollbar);
    GetExtent(R);
    R.Assign(Center+1,R.A.Y+1,R.B.X-1,R.B.Y-1);
    RInterior:= new(PInterior, Init(R, HScrollbar, VScrollbar));
    with RInterior^ do
      begin
      Options:= Options or ofFramed;
      Growmode:= GrowMode or gfGrowLoX;
      SetLimit(128,LineCount);
      end;
    Insert(RInterior);
    end;




procedure TMyApp.InitStatusLine;
  var R: TRect;

  begin
  GetExtent(R);      { find out how big the current view is }
  R.A.Y := R.B.Y-1;  { squeeze R down to one line at bottom of frame }
  StatusLine := New(PStatusline, Init(R,
                  NewStatusDef(0, $FFFF,
                    NewStatusKey('~Alt-X~ Exit', kbAltX, cmQuit,
                    NewStatusKey('~F4~ New', kbF4, cmNewWin,
                    NewStatusKey('~Alt-F3~ Close', kbAltF3, cmClose,
                    nil))),
                  nil)
                ));
  end;


{ *** The vvv below indicate the primary hook-up point for the menubar-clock.
  This programmer-defined normal menu structure will be tacked onto the
  end of the clock menubar in TClockMenu.Init.
}

procedure TMyApp.InitMenuBar;
  var R: TRect;

  begin
  GetExtent(R);       {***}
  r.b.y:= r.a.y+1;   { vvv }
  Menubar := New(PClockMenu, Init(R, NewMenu(
               NewSubMenu('~F~ile', hcNoContext, NewMenu(
                 NewItem('~O~pen','F3', kbF3, cmFileOpen, hcNoContext,
                 NewItem('~N~ew','F4', kbF4, cmNewWin, hcNoContext,
                 NewLine(
                 NewItem('E~x~it','Alt-X', kbAltX, cmQuit, hcNoContext,
                 nil))))),
               NewSubMenu('~W~indow', hcNoContext, NewMenu(
                 NewItem('~N~ext','F6', kbF6, cmNext, hcNoContext,
                 NewItem('~Z~oom','F7', kbF7, cmZoom, hcNoContext,
                 nil))),
               nil))    { one ) for each menu defined }
             )));
  end;


procedure TMyApp.NewWindow;
  var
    Window: PDemoWindow;
    R: TRect;

  begin
  inc(WinCount);
  Window:= New(PDemoWindow, Init(WinCount));
  Desktop^.Insert(Window);
  end;




{*** clock hook-up point - typecasting required to access "new" method }

procedure TMyApp.Idle;
  begin
  TApplication.Idle;
  PClockMenu(MenuBar)^.Update;
  end;




procedure TMyApp.HandleEvent( var Event: TEvent);
  begin
  TApplication.HandleEvent(Event);
  if Event.What = evCommand then
    begin
      case Event.Command of
        cmNewWin: NewWindow;
      else  { case }
        Exit;
      end;  { case }
      ClearEvent(Event);
    end; {if}
  end;








begin

readfile;

MyApp.Init;
MyApp.run;
MyApp.done;
end.