{$X+}

program AllModes;
{
 * test and demo program for the Graph unit
 *
 * Please read the copyright notices of graph.pas
 *
 * This file is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Author : Sven Hilscher
 * e-mail : sven@rufus.central.de
}

uses
  Graph;

function MyStr(Numeric, Len: Integer):WrkString;
var
  RetString : WrkString;
begin
  str(Numeric:Len, RetString);
  MyStr := RetString;
end;


var
  i, c,
  grDriver,
  grMode,
  ErrCode: Integer;

begin
  grDriver := Detect;
  { grDriver := InstallUserDriver('SVGA256', nil); Not used in GPC }
  InitGraph(grDriver, grMode,'../../chr');
  ErrCode := GraphResult;
  if ErrCode = GrOk then
  begin  { Do graphics }
    for i := 0 to GetMaxMode do
    begin
      SetGraphMode(i);

      if GetMaxColor < 256 then
         for c := 1 to GetMaxColor-1 do begin
         begin
           SetRGBPalette(c,c,0,255-c);
           SetColor(c);
           Line(c + 10, 5, c + 10, 30)
         end;
         SetRGBPalette(GetMaxColor,255,255,255);
         SetColor(GetMaxColor)
      end else begin
         for c := 0 to 255 do
         begin
           SetColor(c);
           Line(c + 10, 5, c + 10, 30)
         end;
         SetColor(White)
      end;

      OutTextXY(10,40, GetDriverName);
      OutTextXY(10,50, 'Resolution : ' + MyStr(GetMaxX + 1, 4) + ' x' + MyStr(GetMaxY + 1, 4));
      OutTextXY(10,60, 'Colors     : ' + MyStr(GetMaxColor + 1, 10));
      OutTextXY(10,80, 'ActMode    : ' + MyStr(i         , 4));
      OutTextXY(10,90, 'ModeName   : ' + GetModeName(i)    );
      OutTextXY(10,140,'Press Enter');

      Rectangle(0,0,GetMaxX,GetMaxY);
      Rectangle(2,2,GetMaxX-2,GetMaxY-2);

      ReadKey;
    end;
    CloseGraph
  end
  else begin
      Writeln('Graphics error:', GraphErrorMsg(ErrCode));
      Write  ('Press Enter ...');
      ReadLn
  end
end.