clientfrm.pas

能够监视另一台机子的屏幕

unit ClientFrm;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  ScktComp, ExtCtrls, ComCtrls, FormSettings, Menus, StdCtrls, Buttons,
  RemConMessages, ZLib;

const
   DEFAULT_SERVER_DELAY = 500;
   DEFAULT_VIEW_MODE    = vmColor4;
   DEFAULT_COMP_MODE    = clDefault;
   DEFAULT_SVR_PRIORITY = THREAD_PRIORITY_HIGHEST;

type
   TMoveObj = class
      X, Y  : integer;
      Time  : integer;
   end;

  TClientForm = class(TForm)
    StatPanel: TPanel;
    StatusBar1: TStatusBar;
    ScrollBox1: TScrollBox;
    Image1: TImage;
    ClientSocket1: TClientSocket;
    Timer1: TTimer;
    FormSettings1: TFormSettings;
    MainMenu1: TMainMenu;
    File1: TMenuItem;
    Connect1: TMenuItem;
    N1: TMenuItem;
    Exit1: TMenuItem;
    Disconnect1: TMenuItem;
    View1: TMenuItem;
    RefreshComplete1: TMenuItem;
    UpdateChanges1: TMenuItem;
    ResponseTimer: TTimer;
    ClickTimer: TTimer;
    Options1: TMenuItem;
    ServerPause1: TMenuItem;
    N005sec1: TMenuItem;
    N010sec1: TMenuItem;
    N050sec1: TMenuItem;
    N100sec1: TMenuItem;
    N200sec1: TMenuItem;
    N500sec1: TMenuItem;
    LogList: TListBox;
    Splitter1: TSplitter;
    N2: TMenuItem;
    Log1: TMenuItem;
    CommStat1: TMenuItem;
    N3: TMenuItem;
    Shutdown1: TMenuItem;
    Special1: TMenuItem;
    FocusServerWindow1: TMenuItem;
    BitmapFormat1: TMenuItem;
    Color4: TMenuItem;
    Gray4: TMenuItem;
    Gray8: TMenuItem;
    Color24: TMenuItem;
    Default1: TMenuItem;
    WaitImage: TImage;
    CompressionLevel1: TMenuItem;
    HighSlow1: TMenuItem;
    Medium1: TMenuItem;
    LowFast1: TMenuItem;
    ServerPriority1: TMenuItem;
    Critical1: TMenuItem;
    Highest1: TMenuItem;
    AboveNormal1: TMenuItem;
    Normal1: TMenuItem;
    BelowNormal1: TMenuItem;
    Lowest1: TMenuItem;
    Idle1: TMenuItem;
    N4: TMenuItem;
    ScaleImage1: TMenuItem;
    ProcessList1: TMenuItem;
    N5: TMenuItem;
    FileList1: TMenuItem;
    Panel1: TPanel;
    SendCRBut: TSpeedButton;
    SendBut: TSpeedButton;
    SendPanel: TPanel;
    SendEdit: TEdit;
    Help1: TMenuItem;
    About1: TMenuItem;
    StatBarMenu: TMenuItem;
    FullScreen1: TMenuItem;
    procedure FormShow(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure ClientSocket1Lookup(Sender: TObject;
      Socket: TCustomWinSocket);
    procedure ClientSocket1Connecting(Sender: TObject;
      Socket: TCustomWinSocket);
    procedure ClientSocket1Connect(Sender: TObject;
      Socket: TCustomWinSocket);
    procedure ClientSocket1Error(Sender: TObject; Socket: TCustomWinSocket;
      ErrorEvent: TErrorEvent; var ErrorCode: Integer);
    procedure Exit1Click(Sender: TObject);
    procedure Connect1Click(Sender: TObject);
    procedure ClientSocket1Read(Sender: TObject; Socket: TCustomWinSocket);
    procedure ClientSocket1Disconnect(Sender: TObject;
      Socket: TCustomWinSocket);
    procedure Disconnect1Click(Sender: TObject);
    procedure RefreshComplete1Click(Sender: TObject);
    procedure UpdateChanges1Click(Sender: TObject);
    procedure Image1MouseMove(Sender: TObject; Shift: TShiftState; X,
      Y: Integer);
    procedure ResponseTimerTimer(Sender: TObject);
    procedure Image1MouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure Image1Click(Sender: TObject);
    procedure Image1MouseUp(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure Image1DblClick(Sender: TObject);
    procedure ClickTimerTimer(Sender: TObject);
    procedure PauseChange(Sender: TObject);
    procedure SendButClick(Sender: TObject);
    procedure SendCRButClick(Sender: TObject);
    procedure Log1Click(Sender: TObject);
    procedure CommStat1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure Shutdown1Click(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure FocusServerWindow1Click(Sender: TObject);
    procedure ColorClick(Sender: TObject);
    procedure CompClick(Sender: TObject);
    procedure PriorityClick(Sender: TObject);
    procedure ScaleImage1Click(Sender: TObject);
    procedure ProcessList1Click(Sender: TObject);
    procedure FileList1Click(Sender: TObject);
    procedure SendPanelResize(Sender: TObject);
    procedure About1Click(Sender: TObject);
    procedure StatBarMenuClick(Sender: TObject);
    procedure FullScreen1Click(Sender: TObject);
    procedure FormKeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
  protected
    NumRec     : double;
    NumSend    : double;
    CurMsg     : string;
    NeedReply  : integer;
    LastX      : integer;
    LastY      : integer;
    t1         : DWORD;
    but        : integer;
    NumClick   : integer;
    MoveList   : TList;
    Anim       : integer;
    LastRec    : DWORD;
    ServerDelay: integer;
    ViewMode   : TViewMode;
    CompMode   : TCompressionLevel;
    SvrPriority: integer;
    ProcForm   : TForm;
    FileForm   : TForm;
    LastCPS    : string;
    BeforeFull : TRect;
    procedure  SetStat(i: integer; s: string);
    procedure  UpdateStats;
    procedure  SendText(const Text: string);
    procedure  Log(const s: string);
    procedure  EnableButs;
    procedure  ClearMoveList;
    procedure  AddMove(x, y: integer);
    procedure  ParseComLine;
    procedure  StopAnim;
    procedure  StartAnim;
    procedure  EnableInput;
    procedure  WMSysCommand(var Message: TWMSysCommand); message WM_SYSCOMMAND;
    function   CanSendMenuMsg: boolean;
    procedure  Send_Current_Settings;
    procedure  ScaleXY(var X, Y: integer);
    procedure  UpdateLogVis;
  public
    procedure  SendMsg(MsgNum: integer; const MsgData: string; Socket: TCustomWinSocket);
    procedure  ProcessMessage(const Msg: string; Socket: TCustomWinSocket);
    property   Stat[i: integer]: string write SetStat;
  end;

var
  ClientForm: TClientForm;

implementation

uses ConnectDlg, ProcListDlg, FilesDlg, About, FsTopDlg;

{$R *.DFM}

procedure TClientForm.FormShow(Sender: TObject);
begin
   UpdateLogVis;
   if not ClientSocket1.Active then
      Timer1.Enabled := True;
end;

function IsDotAddress(const s: string): boolean;
var
   i : integer;
begin
   Result := True;
   for i := 1 to Length(s) do
      if not (s[i] in ['0'..'9', '.']) then Result := False;
end;

procedure TClientForm.Timer1Timer(Sender: TObject);
var
   f : TForm;
begin
   Timer1.Enabled := False;

   f := Self;
   with ClientConnectForm do begin
      Left := (f.Left + f.Width div 2) - Width div 2;
      Top  := (f.Top + f.Height div 2) - Height div 2;

      if ShowModal = mrOK then with ClientSocket1 do begin
         if IsDotAddress(ServerCombo.Text) then begin
            Host    := '';
            Address := ServerCombo.Text;
         end else begin
            Address := '';
            Host    := ServerCombo.Text;
         end;
         Port := StrToInt(PortEdit.Text);

         StartAnim;
         Active := True;
      end;
   end;
end;

procedure TClientForm.FormClose(Sender: TObject; var Action: TCloseAction);
begin
   if BorderStyle<>bsNone then FormSettings1.SaveSettings;
   Disconnect1Click(nil);
end;

procedure TClientForm.ClientSocket1Lookup(Sender: TObject;
  Socket: TCustomWinSocket);
begin
   Stat[0] := ('Looking up: ' + ClientSocket1.Host);
end;

procedure TClientForm.SetStat(i: integer; s: string);
begin
   FSTopForm.StatLabel.Caption := s;
   StatusBar1.Panels[i].Text := s;
   Update;
end;

procedure TClientForm.ClientSocket1Connecting(Sender: TObject;
  Socket: TCustomWinSocket);
begin
   Stat[0] := ('Connecting: ' + ClientSocket1.Host);
end;

procedure TClientForm.ClientSocket1Connect(Sender: TObject;
  Socket: TCustomWinSocket);
begin
   Log(Format('%-7s %s', ['LogOn', DateTimeToStr(Now)]));

   EnableButs;
   Stat[0] := ('Connected: ' + Socket.RemoteHost);
   Caption := 'Remote Control Client - ' + Socket.RemoteHost;

   NumSend   := 0;
   NumRec    := 0;
   NeedReply := 0;
   StopAnim;
   EnableInput;

   SendMsg(MSG_LOGON, ClientConnectForm.PassEdit.Text, ClientSocket1.Socket);
   Send_Current_Settings;
end;

procedure TClientForm.ClientSocket1Error(Sender: TObject;
  Socket: TCustomWinSocket; ErrorEvent: TErrorEvent;
  var ErrorCode: Integer);
begin
   Stat[0] := ('Error: ' + IntToStr(ErrorCode));
   ErrorCode := 0;

   if not Socket.Connected then StopAnim;
end;

procedure TClientForm.Exit1Click(Sender: TObject);
begin
   Close;
end;

procedure TClientForm.Connect1Click(Sender: TObject);
begin
   Image1.Picture.Bitmap := nil;
   Timer1Timer(nil);
end;

procedure TClientForm.SendMsg(MsgNum: integer; const MsgData: string; Socket: TCustomWinSocket);
var
   s : string;
begin
   Log(Format('%-7s #%2.2d', ['Send', MsgNum]));

   Stat[0] := Format('Sending Message (Len = %1.0n)', [Length(MsgData)+0.0]);
    
   s := IntToByteStr(MsgNum) + IntToByteStr(Length(MsgData)) + MsgData;
   Socket.SendText(s);
   NumSend := NumSend + Length(s);
   UpdateStats;

   Inc(NeedReply);
   StartAnim;
end;

procedure TClientForm.UpdateStats;
begin
   // Stat[0] := Format('Sent: %1.0n', [NumSend]);
   // Stat[1] := Format('Recv: %1.0n', [NumRec]);
end;


procedure TClientForm.ClientSocket1Read(Sender: TObject;
  Socket: TCustomWinSocket);
var
   s      : string;
   msg    : integer;
   len    : integer;
   PerStr : string;
   tdif   : double;
   cps    : string;
begin
   // WaitImage.Hint := 'Data Last Received:' + #13#10 + CurTime;
   s := Socket.ReceiveText;
   NumRec := NumRec + Length(s);
   UpdateStats;

   if CurMsg = '' then LastRec := GetTickCount;
   CurMsg := CurMsg + s;

   if Length(CurMsg) >= 8 then begin
      Move(CurMsg[1], msg, sizeof(integer));
      Move(CurMsg[5], len, sizeof(integer));
      PerStr := Format('(%1.0n%%)', [Length(CurMsg) / (len + 8.0) * 100.0]);
      tdif := (GetTickCount - LastRec) / 1000.0;
      if tdif > 0.5 then cps := Format('%1.0n cps', [Length(CurMsg) / tdif])
         else cps := '';
      Stat[0] := Format('Received: %1.0n of %1.0n  %s  %s',
         [Length(CurMsg) + 0.0, len + 8.0, PerStr, cps]);
      LastCPS := cps;
   end else begin
      if Length(s) > 0 then
         Stat[0] := 'Received: ' + IntToStr(Length(CurMsg));
   end;

   while IsValidMessage(CurMsg) do begin
      s := TrimFirstMsg(CurMsg);
      ProcessMessage(s, Socket);
   end;
end;

procedure TClientForm.ProcessMessage(const Msg: string; Socket: TCustomWinSocket);
var
   MsgNum   : integer;
   Data     : string;
   bmp      : TBitmap;
   R        : TRect;
begin
   Move(Msg[1], MsgNum, sizeof(integer));
   if MsgNum <> MSG_STAT_MSG then
      Log(Format('%-7s #%0.2d  %6.0n bytes  %s', ['Recv', MsgNum, Length(Msg)+0.0, LastCPS]));

   Data := Copy(Msg, 9, Length(Msg));

   if MsgNum = MSG_STAT_MSG then begin
      Stat[0] := Data;
      exit;
   end;

   Dec(NeedReply);
   if NeedReply = 0 then begin
      StopAnim;
   end;

   if MsgNum = MSG_LOGON then begin
      if Data <> '0' then begin
         Stat[0] := 'Log on Successful';
         if ClientConnectForm.StartScreenBox.Checked then
            SendMsg(MSG_REFRESH, '', ClientSocket1.Socket);
      end else begin
         Stat[0] := 'Invalid Password!';
         MessageDlg('Invalid Password!', mtWarning, [mbOK], 0);
      end;
   end;

   if MsgNum = MSG_REFRESH then begin
      Stat[0] := 'Decompressing';
      SaveString(Data, 'Temp2.txt');
      UnCompressBitmap(Data, Image1.Picture.Bitmap);
      Stat[0] := 'Ready';
   end;

   if MsgNum = MSG_SCREEN_UPDATE then begin
      bmp := TBitmap.Create;
      Stat[0] := 'Decompressing';
      UnCompressBitmap(Data, bmp);
      R := Rect(0, 0, bmp.Width, bmp.Height);
      with Image1.Picture.Bitmap.Canvas do begin
         CopyMode := cmSrcInvert;
         CopyRect(R, bmp.Canvas, R);
      end;
      Stat[0] := 'Ready';
      bmp.Free;
   end;

   if MsgNum = MSG_SEVER_DELAY then begin
      Stat[0] := 'Server Delay Set';
   end;

   if MsgNum = MSG_VIEW_MODE then begin
      Stat[0] := 'View Mode Set';
   end;

   if MsgNum = MSG_COMP_MODE then begin
      Stat[0] := 'Compression Mode Set';
   end;

   if MsgNum = MSG_PRIORITY_MODE then begin
      Stat[0] := 'Priority Mode Set';
   end;

   if MsgNum = MSG_PROCESS_LIST then begin
      if ProcForm = nil then
         ProcForm := TProcListForm.Create(Self);
      (ProcForm as TProcListForm).SetList(Data);
      ProcForm.Show;
      Stat[0] := 'Received Process List';
   end;

   if MsgNum = MSG_DRIVE_LIST then begin
      if FileForm = nil then
         FileForm := TFilesForm.Create(Self);
      (FileForm as TFilesForm).SetDriveList(Data);
      FileForm.Show;

      Stat[0] := 'Received Drive List';
   end;

   if MsgNum = MSG_DIRECTORY then begin
      Assert(FileForm <> nil);
      (FileForm as TFilesForm).SetDirData(Data);
      FileForm.Show;

      Stat[0] := 'Received Directory';
   end;

   if MsgNum = MSG_FILE then begin
      Assert(FileForm <> nil);
      Stat[0] := 'Received File';
      (FileForm as TFilesForm).SetFileData(Data);
   end;

   if MsgNum = MSG_REMOTE_LAUNCH then begin
      Stat[0] := 'Launched File: ' + Data;
   end;