Pascal Super Library/Pascal Super Library (CW International)(1997).bin/TURB_VIS/TCYBER25/CYANI.ZIP/CYANI.PAS

Pascal/Delphi Source File | 1994-10-20 | 37KB | 1,428 lines

{
Turbo Vision CyberTools 2.5
(C) 1994 Steve Goldsmith
All Rights Reserved

CyberAnimate application plays Snip animation files, exports frames as
256 color PCX files, imports PCXs to a Snip file and views PCX files.
Configuration stream compatible with CyberEdit 2.5.

Borland Pascal 7.x or Turbo Pascal 7.x and Turbo Vision 2.x are required to
compile.

Set IDE directories to

\BP\UNITS;
\BP\EXAMPLES\DOS\TVDEMO;
\BP\EXAMPLES\DOS\TVFM;

These path names are BP 7.x defaults.  If you changed any of these then use
the correct paths in Options|Directories...  See APP.INC for global compiler
switches.
}

program CyberAni;

{$I APP.INC}
{$X+}

uses

  Dos,                           {bp units}
  Memory, Drivers, Objects,      {tv units}
  Views, Menus, Dialogs,
  App, MsgBox, StdDlg, ColorSel,
  Gadgets, HelpFile,             {tvdemo units}
  ViewText,                      {tvfm units}
  CAHelp, CACmds,                {cybertools units}
{$IFDEF UseDLL}
  CyberAPI,
{$ELSE}
  VGA,
{$ENDIF}
  VGACGFil, PCX, Snip,
  SnipDlg, PCXSNP, CommDlgs, TVStr;

const

  appDocName  = 'CYBER.DOC';  {doc file name}
  appCfgName  = 'CYEDIT.CFG'; {config stream file name}
  appHelpName = 'CAHELP.HLP'; {help file name}
  appExeName  = 'CYANI.EXE';  {name used to locate .exe for older dos}
  appCfgHeaderLen = 10;       {header used by config stream}
  appCfgHeader : string[appCfgHeaderLen] = 'CYBEREDIT'#26;
  appViewDocBuf = 8192;       {buffer size for viewing doc file}

  appChrWidth8  = $01;        {set app options bit to 1 to select option}
  appPageMode   = $02;
  app8Colors    = $04;
  app256Color   = $0100;      {app in 256 color mode}
  appHelpInUse  = $8000;      {used by help system}
  appScrOpts    = $07;        {mask of just screen options}

  appGraphWinX = 32;          {x = 32*8 = 256 pixels}
  appGraphWinY = 8;           {y = 8*16 = 128 pixels}
  appFadeInc   = 8;           {fade in/out increment}

  CSysColor = #$00#$00#$00;   {app palette additions for tv system stuff}
  CSysPal   = #137#138#139;

type

  TCyberAni = object (TApplication)
    FontTable1,
    FontTable2,
    FirstChr,
    LastChr : byte;
    AppOptions,
    PageOfs,
    DefChrHeight : word;
    Page : pointer;
    DefFont : vgaChrTablePtr;
    DacPalette : vgaPalette;
    ScrData : ScrOptsData;
    Clock : PClockView;
    Heap : PHeapView;
    constructor Init;
    destructor Done; virtual;
    procedure SetCustomScreen;
    procedure FlipPage;
    procedure ClearDeskTop;
    procedure Idle; virtual;
    procedure AboutBox;
    procedure LoadFontTable (ChrData : pointer;
                             ChrTable, ChrHeight :byte;
                             StartChr, NumChrs : word);
    function SaveFontTable (ChrTable, ChrHeight :byte;
                            StartChr, NumChrs : word) : vgaChrTablePtr;
    procedure RestoreDesktop (F : PathStr);
    procedure SaveDeskTop (F : PathStr);
    procedure GetEvent (var Event : TEvent); virtual;
    function GetPalette : PPalette; virtual;
    procedure HandleEvent (var Event : TEvent); virtual;
    procedure InitDeskTop; virtual;
    procedure InitMenuBar; virtual;
    procedure InitStatusLine; virtual;
    procedure OutOfMemory; virtual;
    procedure LoadDesktop (var S : TStream);
    procedure StoreDesktop (var S : TStream);
  end;

{
Initilize TV app.
}

constructor TCyberAni.Init;

var

  R :TRect;

begin
  LowMemSize := 512;    {8192 byte safety pool}
  inherited Init;
  RegisterObjects;      {register stuff for stream access}
  RegisterViews;
  RegisterMenus;
  RegisterDialogs;
  RegisterApp;
  RegisterHelpFile;

  GetExtent (R);   {gadgets included with tvdemo}
  R.A.Y := R.B.Y-1;
  R.B.X := R.B.X-1;
  R.A.X := R.B.X-8;
  Heap := New (PHeapView,Init(R));
  Heap^.GrowMode := gfGrowAll;
  Insert (Heap);

  GetExtent (R);
  R.B.Y := R.A.Y+1;
  R.B.X := R.B.X-1;
  R.A.X := R.B.X-8;
  Clock := New (PClockView,Init (R));
  Insert (Clock);

  RestoreDesktop (appCfgName); {load config stream}
  AboutBox
end;

{
Done TV app.
}

destructor TCyberAni.Done;

begin
  if DefFont <> nil then      {dispose default font}
    FreeMem (DefFont,vgaMaxChrs*DefChrHeight);
  FadeOutDAC (appFadeInc);    {fade to black}
  SetVideoMode (StartUpMode); {this resets all the custom stuff with bios}
  inherited Done
end;

{
Sets screen page if not not flipping, 8 or 16 color mode, 8 or 9 pixel width,
font map, DAC palette and mouse mask.
}

procedure TCyberAni.SetCustomScreen;

begin
  HideMouse;
  if AppOptions and appPageMode = 0 then
    SetPage (vgaPageOfsLoc[0]); {screen page 0 for non page flipping displays}
  if AppOptions and app8Colors = app8Colors then
    SetAttrCont (vgaAttrCPEnable,$07)  {use 8 colors}
  else
    SetAttrCont (vgaAttrCPEnable,$0f); {use 16 colors}
  if AppOptions and appChrWidth8 = appChrWidth8 then
  begin
    if IsChrWidth9 then
      SetChrWidth8 {640 x 400 screen}
  end
  else
  begin
    if not IsChrWidth9 then
      SetChrWidth9 {720 x 400 screen}
  end;
  FontMapSelect (vgaChrTableMap1[FontTable1],
  vgaChrTableMap2[FontTable2]);    {select font tables}
  SetDACBlock (@DacPalette,0,256); {set 256 color palette}
  MouseTextMask ($ffff,$f700);     {set mouse mask for both fonts}
  ShowMouse
end;

{
Copy screen page 0 to new non-visiable page and flip to new page.
}

procedure TCyberAni.FlipPage;

begin
  CopyScrMem (ScreenBuffer,Page,vgaScrSize25);
  SetPage (PageOfs);
  if PageOfs = vgaPageOfsLoc[1] then
  begin
    PageOfs := vgaPageOfsLoc[2];
    Page := vgaPageLoc[2]
  end
  else
  begin
    PageOfs := vgaPageOfsLoc[1];
    Page := vgaPageLoc[1]
  end;
  WaitVertSync {wait for vga vert sync before drawing anything}
end;

{
Remove all closeable windows from desk top.
}

procedure TCyberAni.ClearDeskTop;

procedure CloseDlg (P : PView); far;

begin
  Message (P,evCommand,cmClose,nil)
end;

begin
  Desktop^.ForEach (@CloseDlg)
end;

{
Handle app's idle time processing.
}

procedure TCyberAni.Idle;

{return true if any view on desk top is tileable}

function IsTileable (P : PView) : boolean; far;

begin
  IsTileable := (P^.Options and ofTileable <> 0) and
  (P^.State and sfVisible <> 0)
end;

begin
  inherited Idle;
  Clock^.Update; {update tvdemo gadgets}
  Heap^.Update;
  if Desktop^.Current <> nil then              {see if anything is}
  begin                                        {on the desk top}
    EnableCommands ([cmCloseAll]);
    if Desktop^.FirstThat (@IsTileable) <> nil then {see if any tileable}
      EnableCommands ([cmTile,cmCascade])           {windows are on the}
    else                                            {desk top}
      DisableCommands ([cmTile,cmCascade])
  end
  else
    DisableCommands ([cmCloseAll,cmTile,cmCascade]);
  if ((Desktop^.Current <> nil) and
  (Desktop^.Current^.State and sfModal = sfModal)) or
  (AppOptions and appHelpInUse = appHelpInUse) then    {see if modal dialog}
    DisableCommands ([cmQuit])                         {is on the desk top}
  else
    EnableCommands ([cmQuit]);
  if AppOptions and appPageMode = appPageMode then
    FlipPage  {if page mode is enabled then flip page each idle cycle}
end;

{
Display info about app.
}

procedure TCyberAni.AboutBox;

begin
  HelpCtx := hcAbout;
  MessageBox(
    #3'Turbo Vision CyberTools 2.5'#13+
    #3'(C) 1994 Steve Goldsmith'#13+
{$IFDEF DPMI}
  {$IFDEF UseDLL}
    #3'CyberAnimate DPMI, DLL',
  {$ELSE}
    #3'CyberAnimate DPMI',
  {$ENDIF}
{$ELSE}
    #3'CyberAnimate REAL',
{$ENDIF}
    nil, mfInformation or mfOKButton);
  HelpCtx := hcNoContext
end;

{
Load font table from system RAM.
}

procedure TCyberAni.LoadFontTable (ChrData : pointer;
                                   ChrTable, ChrHeight :byte;
                                   StartChr, NumChrs : word);

begin
  HideMouse;
  AccessFontMem;
  SetRamTable (StartChr,NumChrs,ChrHeight,ChrData,vgaChrTableLoc[ChrTable]);
  AccessScreenMem;
  ShowMouse
end;

{
Save font table from video RAM.
}

function TCyberAni.SaveFontTable (ChrTable, ChrHeight :byte;
                                   StartChr, NumChrs : word) : vgaChrTablePtr;

begin
  HideMouse;
  AccessFontMem;
  SaveFontTable :=
  GetRamTable (StartChr,NumChrs,ChrHeight,vgaChrTableLoc [ChrTable]);
  AccessScreenMem;
  ShowMouse
end;

{
Restore desk top stream.
}

procedure TCyberAni.RestoreDesktop (F : PathStr);

var

  I : byte;
  S : PStream;
  Signature : string[appCfgHeaderLen];

begin
  S := New (PBufStream,Init (F,stOpenRead,1024));
  if LowMemory then OutOfMemory
  else
    if S^.Status <> stOk then
    begin
      MessageBox (#3'Unable to open file.',nil,mfOkButton+mfError)
    end
    else
    begin
      Signature[0] := Char (appCfgHeaderLen);
      S^.Read (Signature[1],appCfgHeaderLen);
      if Signature = appCfgHeader then {see if signature is right}
      begin
        S^.Read (AppOptions,SizeOf (AppOptions)); {read data from stream}
        S^.Read (FontTable1,SizeOf (FontTable1));
        S^.Read (FontTable2,SizeOf (FontTable2));
        S^.Read (FirstChr,SizeOf (FirstChr));
        S^.Read (LastChr,SizeOf (LastChr));
        S^.Read (DacPalette,SizeOf (DacPalette));

        if DefFont = nil then
          DefFont := MemAlloc (DefChrHeight*vgaMaxChrs);
        HideMouse; {no screen writes during font mem access}
        AccessFontMem;
        for I := 0 to 7 do
        begin
          S^.Read (DefFont^,DefChrHeight*vgaMaxChrs);
          SetRamTable (0,vgaMaxChrs,DefChrHeight,DefFont,vgaChrTableLoc[I])
        end;
        AccessScreenMem;
        ShowMouse;

        LoadDesktop (S^);
        LoadIndexes (S^);
        ShadowAttr := GetColor (137);   {tv shadow color}
        SysColorAttr := (GetColor (138) shl 8) or
        GetColor (138);                 {tv system error color}
        ErrorAttr := GetColor (139);    {tv palette index error color}
        Application^.ReDraw; {draw app with new config}
        if DefFont <> nil then
        begin
          FreeMem (DefFont,DefChrHeight*vgaMaxChrs);
          DefFont := SaveFontTable (FontTable1,DefChrHeight,0,vgaMaxChrs)
        end;
        SetCustomScreen;
        if S^.Status <> stOk then
          MessageBox (#3'Stream error.',nil,mfOkButton+mfError);
      end
      else
        MessageBox (#3'Invalid configuration format.',nil,mfOkButton+mfError)
    end;
  Dispose (S,Done)
end;

{
Save desk top stream.
}

procedure TCyberAni.SaveDesktop (F : PathStr);

var

  I : byte;
  CfgFile : File;
  S : PStream;
  SFont : vgaChrTablePtr;

begin
  S := New(PBufStream,Init (F,stCreate,1024));
  if not LowMemory and (S^.Status = stOk) then
  begin
    S^.Write (appCfgHeader[1],appCfgHeaderLen); {write stream data}
    S^.Write (AppOptions,SizeOf (AppOptions));
    S^.Write (FontTable1,SizeOf (FontTable1));
    S^.Write (FontTable2,SizeOf (FontTable2));
    S^.Write (FirstChr,SizeOf (FirstChr));
    S^.Write (LastChr,SizeOf (LastChr));
    GetDACBlock (@DacPalette,0,256);
    S^.Write(DacPalette,SizeOf (DacPalette));

    HideMouse; {no screen write during font mem access}
    AccessFontMem;
    for I := 0 to 7 do {save all 8 vga font tables}
    begin
      SFont := GetRamTable (0,vgaMaxChrs,DefChrHeight,vgaChrTableLoc[I]);
      S^.Write (SFont^,DefChrHeight*vgaMaxChrs);
      if SFont <> nil then
        FreeMem (SFont,DefChrHeight*vgaMaxChrs)
    end;
    AccessScreenMem;
    ShowMouse;

    StoreDesktop (S^);
    StoreIndexes (S^);
    if S^.Status <> stOk then
    begin {if stream error then delete file}
      MessageBox (#3'Could not create stream.',nil,mfOkButton+mfError);
      Dispose (S,Done);
      Assign (CfgFile,F);
      {$I-} Erase (CfgFile) {$I+};
      Exit
    end
  end;
  Dispose (S,Done)
end;

{
Intercept cmHelp to display help even when views are in modal state.
}

procedure TCyberAni.GetEvent (var Event : TEvent);

function CalcHelpName : PathStr;

var

  EXEName : PathStr;
  Dir : DirStr;
  Name : NameStr;
  Ext : ExtStr;

begin
  if Lo (DosVersion) >= 3 then
    EXEName := ParamStr (0)
  else
    EXEName := FSearch (appExeName, GetEnv ('PATH'));
  FSplit (EXEName, Dir, Name, Ext);
  if Dir[Length (Dir)] = '\' then
    Dec (Dir[0]);
  CalcHelpName := FSearch (appHelpName, Dir);
end;

var

  W : PWindow;
  HFile : PHelpFile;
  HelpStrm : PDosStream;

begin
  inherited GetEvent (Event);
  case Event.What of
    evCommand:
      if (Event.Command = cmHelp) and
      (AppOptions and appHelpInUse = 0) and
      (AppOptions and app256Color = 0) then
      begin {process help command if not in use and not in 256 color mode}
        AppOptions := AppOptions or appHelpInUse; {help's in use}
        HelpStrm := New (PDosStream, Init (CalcHelpName, stOpenRead));
        HFile := New (PHelpFile, Init (HelpStrm));
        if HelpStrm^.Status <> stOk then
        begin
          MessageBox (#3'Could not open help file.', nil, mfError + mfOkButton);
          Dispose (HFile, Done);
        end
        else
        begin
          W := New (PHelpWindow,Init (HFile, GetHelpCtx));
          if ValidView (W) <> nil then
          begin
            DisableCommands ([cmHelp]);
            ExecView (W);
            Dispose (W, Done);
            EnableCommands ([cmHelp])
          end;
          ClearEvent (Event)
        end;
        AppOptions := AppOptions and not appHelpInUse
      end;
    evMouseDown:
      if Event.Buttons <> 1 then
        Event.What := evNothing
  end
end;

{
Get custom app palette.
}

function TCyberAni.GetPalette: PPalette;

const

  CNewColor = CAppColor+CHelpColor+CCharColor+CSysColor;
  CNewBlackWhite = CAppBlackWhite+CHelpBlackWhite+CCharColor+CSysColor;
  CNewMonochrome = CAppMonochrome+CHelpMonochrome+CCharColor+CSysColor;
  P: array[apColor..apMonochrome] of string[Length (CNewColor)] =
  (CNewColor, CNewBlackWhite, CNewMonochrome);

begin {add additional entries to the normal application palettes}
  GetPalette := @P[AppPalette];
end;

{
Process app events.
}

procedure TCyberAni.HandleEvent (var Event: TEvent);

{
Load DOC file.
}

procedure ViewTextFile (FileName : PathStr);

var

  T : PTextWindow;
  R : TRect;

begin
  GetExtent (R);
  R.Grow (-5,-4);
  T := New(PTextWindow, Init(R, FileName));
  T^.Options := T^.Options or ofCentered;
  T^.Palette := wpGrayWindow;
  T^.HelpCtx := hcViewDoc;
  InsertWindow (T)
end;

{
Text mode graphics window for viewing 2 color PCX images and fonts.
}

procedure GraphicsWin (T : string);

var

  P : PChrSetDlg;

function IsThere (P : PView) : Boolean; far;

begin {see if view is a chr set dialog}
  IsThere := (TypeOf (P^) = TypeOf (TChrSetDlg))
end;

begin
  PView (P) := Desktop^.FirstThat (@IsThere);
  if P <> nil then {if on screen then close}
  begin
    if PChrSetDlg (P)^.Title <> nil then
      DisposeStr (PChrSetDlg (P)^.Title);
    PChrSetDlg (P)^.Title := NewStr (T);
    PChrSetDlg (P)^.Frame^.DrawView;
    PChrSetDlg (P)^.MakeFirst;
  end
  else
  begin
    P := New(PChrSetDlg,Init (T,appGraphWinX,appGraphWinY));
    P^.Options := P^.Options or ofCentered;
    P^.HelpCtx := hcPCXWindow;
    InsertWindow (P)
  end
end;

{
Load CGF file and store in table.
}

procedure LoadChrFile (F : PathStr; ChrTbl : byte);

var

  ChrFile : TChrGenFile;

begin
  ChrFile.Init;
  ChrFile.OpenRead (F);
  if (ChrFile.IoError = 0) and
  (ChrFile.Header.Height = DefChrHeight) then
  begin
    ChrFile.ReadChrTable;
    LoadFontTable (
    ChrFile.ChrTablePtr,ChrTbl,ChrFile.Header.Height,
    ChrFile.Header.StartChr,ChrFile.Header.TotalChrs)
  end
  else
    MessageBox (#3'Problem reading font file.',nil,mfOkButton+mfError);
  ChrFile.FreeChrTable;
  ChrFile.Done
end;

{
Tree window.
}

procedure TreeWindow (T : string; FMask : PathStr; ACmd : word);

var

  W : PDirWindow;
  Drive : PathStr;

begin
  GetDir (0,Drive);
  W := New (PDirWindow,Init (T,Drive,FMask,ACmd));
  W^.HelpCtx := hcTreeWindow;
  InsertWindow (W)
end;

{
Return focused file name from dir tree window.  If the extension param is not
null then that extension is used.
}

function TreeFileName (TW : PDirWindow; EStr : PathStr; ReadFlag : boolean) : PathStr;

var

  F : file;
  FName : PathStr;

begin
  FName := UpCaseStr (TW^.FocDirName+TW^.NameLine^.Data^);
  if (EStr <> '') and (FName[byte (FName[0])] <> '\') then {force extension}
    FName := AddExtStr (FName,EStr);
  if ReadFlag then
    TreeFileName := FName
  else
  begin
    Assign (F,FName);
    {$I-} Reset (F); {$I+}
    if IoResult = 0 then {see if file exists before writes}
    begin
      {$I-} Close (F); {$I+}
      if MessageBox (FName+' already exists.  Erase and continue?',
      nil,mfConfirmation or mfYesNoCancel) = cmYes then
        TreeFileName := FName
      else
        TreeFileName := ''
    end
    else
      TreeFileName := FName {doesn't exist, so return name}
  end
end;

{
New file list.
}

procedure NewFileList;

var

  D : PStrListDlg;

begin
  D := New (PStrListDlg,Init ('File List'));
  D^.HelpCtx := hcFileList;
  InsertWindow (D)
end;

{
Add file to file list.
}

procedure AddFileToList (TW : PDirWindow);

var

  I : integer;
  F : PathStr;
  D : PStrListDlg;

function IsStrList (V : PView) : boolean; far;

begin
  IsStrList :=  TypeOf (V^) = TypeOf (TStrListDlg)
end;

begin
  F := TreeFileName (TW,'',true);
  if F <> '' then
  begin
    D := PStrListDlg (Desktop^.FirstThat (@IsStrList));
    if D <> nil then
      with D^.StrBox^ do
      begin
        if (not LowMemory) and
        (not PStringCollection (List)^.Search (@F,I)) then
        begin
          List^.Insert (NewStr(F));       {add file name to list}
          SetRange (List^.Count);         {set list's range}
          FocusItem (List^.IndexOf (@F)); {focus inserted item}
          DrawView                        {draw box}
        end
      end
  end
end;

{
Return first file list in Z order.
}

function GetStrListDlg : PStrListDlg;

function IsStrList (V : PView) : boolean; far;

begin
  IsStrList :=  TypeOf (V^) = TypeOf (TStrListDlg)
end;

begin
  GetStrListDlg := PStrListDlg (Desktop^.FirstThat (@IsStrList))
end;

{
Find first file list in Z order and handle missing and empty lists by
returning nil.
}

function GetFileList : PStrListDlg;

var

  D : PStrListDlg;

begin
  D := GetStrListDlg;
  if D <> nil then
  begin
    if D^.StrBox^.List^.Count = 0 then
    begin
      MessageBox (#3'File list empty',nil,mfOkButton+mfError);
      D^.Focus;
      D := nil
    end
  end
  else
  begin
    MessageBox (#3'No file list found on desk top',nil,mfOkButton+mfError);
    NewFileList;
    D := nil
  end;
  GetFileList := D
end;

{
Load CGF file.
}

procedure LoadFontFile (TW : PDirWindow);

var

  F : PathStr;

begin
  F := TreeFileName (TW,'CGF',true);
  if F <> '' then
    LoadChrFile (F,FontTable1)
end;

{
Decode and view 2 color PCX file up to 640 X 480.  Actual viewing area is
256 X 128.
}

procedure LoadPCXFile2 (TW : PDirWindow);

var

  F : PathStr;
  Decode : TPCXToChrTable;

begin
  F := TreeFileName (TW,'PCX',true);
  if F <> '' then
  begin
    HideMouse; {no screen writes during font mem access}
    Decode.Init (F,appGraphWinX,appGraphWinY,
    DefChrHeight,vgaChrTableLoc[FontTable2]);
    if Decode.ReadError = 0 then
    begin
      GraphicsWin ('');
      ShowMouse
    end
    else
    begin
      ShowMouse;
      MessageBox (#3'Problem reading PCX file.',nil,mfOkButton+mfError)
    end;
    Decode.Done
  end
end;

{
Decode and view 256 color PCX file up to 320 X 200.  Font 1 and 2 tables are
preserved.  Fades are implemented to smooth mode changes.
}

procedure LoadPCXFile256 (TW : PDirWindow);

var

  F : PathStr;
  IX, IY : word;
  SaveFont1,
  SaveFont2 : vgaChrTablePtr;
  TempPal   : vgaPalette;
  PCXDecode : TDecodePCXFile256;

begin
  F := TreeFileName (TW,'PCX',true);
  if F <> '' then
  begin
    PCXDecode.Init (F); {read header and set up buffers}
    if PCXDecode.ReadError = 0 then
    begin
      AppOptions := AppOptions or app256Color;
      FillChar (TempPal,SizeOf (TempPal),0); {make all black palette}
      SaveFont1 :=
      SaveFontTable (FontTable1,DefChrHeight,0,vgaMaxChrs); {save current font 1}
      SaveFont2 :=
      SaveFontTable (FontTable2,DefChrHeight,0,vgaMaxChrs); {save current font 2}
      PCXDecode.DecodeFile;         {decode pcx file into buffer}
      PCXDecode.Palette256to64;     {convert 8 bit palette to dac 6 bit}
      HideMouse;
      FadeOutDAC (appFadeInc);      {fade to black}
      BiosSetVideo ($13);           {set 320 x 200 x 256 color with bios}
      SetDACBlock (@TempPal,0,256); {set all black palette}
      for IY := 0 to PCXDecode.YSize-1 do {copy buffer to screen}
        for IX := 0 to PCXDecode.XSize-1 do
          vgaScreen256 (Ptr (SegA000,$0000)^)[IY,IX] :=
          PCXDecode.DecodeBufPtr^[IY*PCXDecode.XSize+IX];
      FadeInDAC (@PCXDecode.ReadPalette,appFadeInc); {fade in pcx palette}
      TempPal := DacPalette;  {save current app palette}
      FillChar (DacPalette,   {prepare app palette for mode switch}
      SizeOf (DacPalette),0);
      AppOptions := AppOptions and not appPageMode; {kill text page flipping}
      MessageBox ('Viewing PCX...',nil,mfOkButton); {wait while viewing image}
      FadeOutDAC (appFadeInc);     {fade to black}
      SetVideoMode (StartUpMode);  {use bios to set text mode}
      SetCustomScreen;             {set custom app screen}
      Redraw;                      {draw desk top}
      if SaveFont1 <> nil then     {restore font 1 and 2 tables and free mem}
      begin
        LoadFontTable (SaveFont1,FontTable1,DefChrHeight,0,vgaMaxChrs);
        FreeMem (SaveFont1,DefChrHeight*vgaMaxChrs);
      end;
      if SaveFont2 <> nil then
      begin
        LoadFontTable (SaveFont2,FontTable2,DefChrHeight,0,vgaMaxChrs);
        FreeMem (SaveFont2,DefChrHeight*vgaMaxChrs);
      end;
      DacPalette := TempPal;              {restore app palette}
      FadeInDAC (@DacPalette,appFadeInc); {fade in app palette}
      ShowMouse;
      AppOptions := AppOptions and not app256Color
    end
    else {error decoding pcx}
      MessageBox (#3'Problem reading PCX file.',nil,mfOkButton+mfError);
    PCXDecode.Done
  end
end;

{
Play 256 color Snip file.
}

procedure LoadSnipFile256 (TW : PDirWindow);

var

  F : PathStr;
  SaveFont1,
  SaveFont2 : vgaChrTablePtr;
  TempPal   : vgaPalette;
  D : PSnipDialog;

begin
  F := TreeFileName (TW,'SNP',true);
  if F <> '' then
  begin
    D := New (PSnipDialog, Init (F));
    if D^.Snip.ReadError = snpNoError then
    begin
      AppOptions := AppOptions or app256Color;
      FillChar (TempPal,SizeOf (TempPal),0); {make all black palette}
      SaveFont1 :=
      SaveFontTable (FontTable1,DefChrHeight,0,vgaMaxChrs); {save current font 1}
      SaveFont2 :=
      SaveFontTable (FontTable2,DefChrHeight,0,vgaMaxChrs); {save current font 2}
      HideMouse;
      TempPal := DacPalette;  {save current app palette}
      FillChar (DacPalette,   {prepare app palette for mode switch}
      SizeOf (DacPalette),0);
      AppOptions := AppOptions and not appPageMode; {kill text page flipping}
      D^.Snip.ReadPal256 (D^.Snip.PalPtr);
      D^.Snip.ReadFrameTable;
      FadeOutDAC (appFadeInc);      {fade to black}
      BiosSetVideo ($13);           {set 320 x 200 x 256 color with bios}
      SetDACBlock (@TempPal,0,256); {set all black palette}
      D^.PlayerInfo;
      D^.Step;                      {load first frame}
      FadeInDAC (D^.Snip.PalPtr,appFadeInc); {fade in frame}
      ExecuteDialog (D,nil);
      FadeOutDAC (appFadeInc);     {fade to black}
      SetVideoMode (StartUpMode);  {use bios to set text mode}
      SetCustomScreen;             {set custom app screen}
      Redraw;                      {draw desk top}
      if SaveFont1 <> nil then     {restore font 1 and 2 tables and free mem}
      begin
        LoadFontTable (SaveFont1,FontTable1,DefChrHeight,0,vgaMaxChrs);
        FreeMem (SaveFont1,DefChrHeight*vgaMaxChrs);
      end;
      if SaveFont2 <> nil then
      begin
        LoadFontTable (SaveFont2,FontTable2,DefChrHeight,0,vgaMaxChrs);
        FreeMem (SaveFont2,DefChrHeight*vgaMaxChrs);
      end;
      DacPalette := TempPal;              {restore app palette}
      FadeInDAC (@DacPalette,appFadeInc); {fade in app palette}
      ShowMouse;
      AppOptions := AppOptions and not app256Color
    end
    else
    begin
      Dispose (D,Done);
      MessageBox (#3'Problem reading Snip file.',nil,mfOkButton+mfError)
    end
  end
end;

{
Make Snip file from 256 color PCX files in DOS search order.
}

procedure MakeSNPFile;

var

  D : PStrListDlg;
  SNP : PPCXSNP;

begin
  D := GetFileList;
  if D <> nil then
  begin
    SNP := New (PPCXSNP,Init (PStringCollection (D^.StrBox^.List)));
    SNP^.HelpCtx := hcMakeSnipDialog;
    ExecuteDialog (SNP,nil)
  end
end;

{
Change directory.
}

procedure ChangeDir;

var

  D: PChDirDialog;

begin
  D := New (PChDirDialog,Init (cdNormal,101));
  D^.HelpCtx := hcChDirDialog;
  ExecuteDialog (D,nil)
end;

{
Restore default font loaded by config.
}

procedure RestoreDefFont;

begin
  if (DefFont <> nil) and
  (DefChrHeight = BiosGetChrHeight) then
    LoadFontTable (DefFont,FontTable1,DefChrHeight,0,vgaMaxChrs)
end;

{
Set custom screen options.
}

procedure ScreenOptions;

var

  D : PScrOptsDlg;

begin
  with ScrData do
  begin
    SMode := AppOptions and appScrOpts; {use only screen options}
    FontMapVal (GetSeqCont (vgaSeqChrMapSel),byte (FntTbl1),byte (FntTbl2));
    FChr := IntToStr (FirstChr);
    LChr := IntToStr (LastChr);
    D := New (PScrOptsDlg,Init);
    D^.Options := D^.Options or ofCentered;
    D^.HelpCtx := hcScreenDialog;
    if ExecuteDialog (D,@ScrData) <> cmCancel then
    begin
      AppOptions := (AppOptions and not appScrOpts)
      or SMode; {clear all scr opts bits and set bits returned from dialog}
      FontTable1 := FntTbl1;
      FontTable2 := FntTbl2;
      FirstChr := StrToInt (FChr);
      LastChr := StrToInt (LChr);
      SetCustomScreen {set screen with new settings}
    end
  end
end;

{
Set custom TV color palette.
}

procedure Colors;

{custom color items}
function DlgColorItems (Palette: Word; const Next: PColorItem) : PColorItem;

const

  COffset : array[dpBlueDialog..dpGrayDialog] of Byte = (64, 96, 32);

var

  Offset : Byte;

begin
  Offset := COffset[Palette];
  DlgColorItems :=
    ColorItem ('Frame passive',     Offset,
    ColorItem ('Frame active',      Offset + 1,
    ColorItem ('Frame icons',       Offset + 2,
    ColorItem ('Scroll bar page',   Offset + 3,
    ColorItem ('Scroll bar icons',  Offset + 4,
    ColorItem ('Static text',       Offset + 5,

    ColorItem ('Label normal',      Offset + 6,
    ColorItem ('Label selected',    Offset + 7,
    ColorItem ('Label shortcut',    Offset + 8,

    ColorItem ('Button normal',     Offset + 9,
    ColorItem ('Button default',    Offset + 10,
    ColorItem ('Button selected',   Offset + 11,
    ColorItem ('Button disabled',   Offset + 12,
    ColorItem ('Button shortcut',   Offset + 13,
    ColorItem ('Button shadow',     Offset + 14,

    ColorItem ('Cluster normal',    Offset + 15,
    ColorItem ('Cluster selected',  Offset + 16,
    ColorItem ('Cluster shortcut',  Offset + 17,

    ColorItem ('Input normal',      Offset + 18,
    ColorItem ('Input selected',    Offset + 19,
    ColorItem ('Input arrow',       Offset + 20,

    ColorItem ('History button',    Offset + 21,
    ColorItem ('History sides',     Offset + 22,
    ColorItem ('History bar page',  Offset + 23,
    ColorItem ('History bar icons', Offset + 24,

    ColorItem ('List normal',       Offset + 25,
    ColorItem ('List focused',      Offset + 26,
    ColorItem ('List selected',     Offset + 27,
    ColorItem ('List divider',      Offset + 28,

    ColorItem('Information pane',  Offset + 29,
    Next))))))))))))))))))))))))))))));
end;

function HelpColorItems(const Next: PColorItem): PColorItem;

begin
  HelpColorItems :=
    ColorItem ('Frame passive',     128,
    ColorItem ('Frame active',      129,
    ColorItem ('Frame icons',       130,
    ColorItem ('Scroll bar page',   131,
    ColorItem ('Scroll bar icons',  132,
    ColorItem ('Normal text',       133,
    ColorItem ('Key word',          134,
    ColorItem ('Select key word',   135,
    Next))))))))
end;

function CharColorItems (const Next: PColorItem) : PColorItem;

begin
  CharColorItems :=
    ColorItem ('2 color PCX', 136,
    Next)
end;

function SysColorItems (const Next: PColorItem) : PColorItem;

begin
  SysColorItems :=
    ColorItem ('Shadow',       137,
    ColorItem ('System error', 138,
    ColorItem ('Index error',  139,
    Next)))
end;

var

  D : PColorDialog;

begin
  D := New (PColorDialog,Init ('',
  ColorGroup ('Desktop',     DesktopColorItems(nil),
  ColorGroup ('Menus',       MenuColorItems(nil),
  ColorGroup ('Gray Windows',WindowColorItems(wpGrayWindow,nil),
  ColorGroup ('Blue Windows',WindowColorItems(wpBlueWindow,nil),
  ColorGroup ('Cyan Windows',WindowColorItems(wpCyanWindow,nil),
  ColorGroup ('Gray Dialogs',DlgColorItems(dpGrayDialog,nil),
  ColorGroup ('Blue Dialogs',DlgColorItems(dpBlueDialog,nil),
  ColorGroup ('Cyan Dialogs',DlgColorItems(dpCyanDialog,nil),
  ColorGroup ('Help',        HelpColorItems(nil),
  ColorGroup ('PCX',  CharColorItems(nil),
  ColorGroup ('System',      SysColorItems(nil),
  nil)))))))))))));
  D^.HelpCtx := hcColorDialog;
  if ExecuteDialog (D,Application^.GetPalette) <> cmCancel then
  begin
    DoneMemory; {dispose all group buffers}
    ReDraw;     {redraw application with new palette}
    ShadowAttr := GetColor (137);   {tv shadow color}
    SysColorAttr := (GetColor (138) shl 8) or
    GetColor (138);                 {tv system error color}
    ErrorAttr := GetColor (139)     {tv palette index error color}
  end
end;

{
Adjust 16 text colors at DAC level.
}

procedure AdjustPalette;

var

  D : PPalDlg;

begin
  D := New (PPalDlg,Init);
  D^.Options := D^.Options or ofCentered;
  D^.HelpCtx := hcPaletteDialog;
  if ExecuteDialog (D,nil) <> cmCancel then
    GetDACBlock (@DacPalette,0,256)
end;

{
Load .CFG file.
}

procedure LoadConfigFile (TW : PDirWindow);

var

  F : PathStr;

begin
  F := TreeFileName (TW,'CFG',true);
  if F <> '' then
    RestoreDeskTop (F)
end;

{
Save .CFG file.
}

procedure SaveConfigFile (TW : PDirWindow);

var

  F : PathStr;

begin
  F := TreeFileName (TW,'CFG',false);
  if F <> '' then
    SaveDeskTop (F)
end;

{
Force all oftileable windows to top.
}
procedure TileableOnTop (P : PView); far;

begin
  if (P^.Options and ofTileable = ofTileable) then
    P^.MakeFirst
end;

begin
  if (Event.What = evCommand) and
  ((Event.Command = cmCascade) or
  (Event.Command = cmTile)) then {seperate oftileable windows from nontileable ones}
    Desktop^.ForEach (@TileableOnTop);
  inherited HandleEvent (Event);
  case Event.What of
    evCommand:
      begin
        case Event.Command of {process commands}
          cmLoadFont    : TreeWindow ('Load Font File','*.CGF',cmLoadFont);
          cmLoadPCX2    : TreeWindow ('Load 2 Color PCX File','*.PCX',cmLoadPCX2);
          cmLoadPCX256  : TreeWindow ('Load 256 Color PCX File','*.PCX',cmLoadPCX256);
          cmSaveConfig  : TreeWindow ('Save Config Stream','*.CFG',cmSaveConfig);
          cmLoadConfig  : TreeWindow ('Load Config Stream','*.CFG',cmLoadConfig);
          cmPlaySnip    : TreeWindow ('Play 256 Color Snip','*.SNP',cmPlaySnip);
          cmFileBrowse  : TreeWindow ('File List Builder','*.PCX',cmAddFile);
          cmViewDoc     : ViewTextFile (appDocName);
          cmAbout       : AboutBox;
          cmMakeSnip    : MakeSNPFile;
          cmNewFileList : NewFileList;
          cmDirChange   : ChangeDir;
          cmCloseAll    : ClearDeskTop;
          cmRestoreDef  : RestoreDefFont;
          cmScreenOpts  : ScreenOptions;
          cmColors      : Colors;
          cmAdjPal      : AdjustPalette;
        else
          Exit
        end;
      end;
    evBroadcast :
    begin
      case Event.Command of {process broadcasts}
        cmLoadPCX2    : LoadPCXFile2 (PDirWindow (Event.InfoPtr));
        cmLoadPCX256  : LoadPCXFile256 (PDirWindow (Event.InfoPtr));
        cmSaveConfig  : SaveConfigFile (PDirWindow (Event.InfoPtr));
        cmLoadConfig  : LoadConfigFile (PDirWindow (Event.InfoPtr));
        cmPlaySnip    : LoadSnipFile256 (PDirWindow (Event.InfoPtr));
        cmAddFile     : AddFileToList (PDirWindow (Event.InfoPtr))
      end
    end
  end
end;

{
Assign desk top pattern char, page locations, set default char height from
bios and save current DAC palette.
}

procedure TCyberAni.InitDeskTop;

begin
  SetScreenMode (smCO80);              {make sure 80x25 active}
  inherited InitDeskTop;
  DeskTop^.Background^.Pattern := '▒'; {new wall paper}
  Page := vgaPageLoc[1];
  PageOfs := vgaPageOfsLoc[1];
  DefChrHeight := BiosGetChrHeight;
  GetDACBlock (@DacPalette,0,256)      {save current vga palette}
end;

{
Menu.
}

procedure TCyberAni.InitMenuBar;

var

  R : TRect;

begin
  GetExtent (R);
  R.B.Y := R.A.Y+1;
  MenuBar := New (PMenuBar,Init (R,NewMenu (
    NewSubMenu ('~F~ile',hcFile,NewMenu (
    NewSubMenu ('~L~oad',hcLoadFile,NewMenu (
      NewItem ('~F~ont...','F3',kbF3,cmLoadFont,hcLoadFile,
      NewItem ('~P~CX 2 color...','Shift+F3',kbShiftF3,cmLoadPCX2,hcLoadFile,
      NewItem ('PCX ~2~56 color...','',kbNoKey,cmLoadPCX256,hcLoadFile,
      NewItem ('~C~onfig...','Ctrl+F3',kbCtrlF3,cmLoadConfig,hcLoadFile,
      nil))))),
      NewItem ('~S~ave config...','Ctrl+F2',kbCtrlF2,cmSaveConfig,hcSaveFile,
      NewItem ('~P~lay Snip...','',kbNoKey,cmPlaySnip,hcPlaySnip,
      NewItem ('~M~ake Snip...','',kbNoKey,cmMakeSnip,hcMakeSnip,
      NewLine (
      NewItem ('~N~ew file list','',kbNoKey,cmNewFileList,hcNewFileList,
      NewItem ('~F~ile list builder','',kbNoKey,cmFileBrowse,hcFileListBuild,
      NewItem ('~C~hange dir...','',kbNoKey,cmDirChange,hcChangeDir,
      NewItem ('~V~iew doc','',kbNoKey,cmViewDoc,hcViewDoc,
      NewItem ('~A~bout','',kbNoKey,cmAbout,hcAbout,
      NewLine (
      NewItem ('E~x~it','Alt+X',kbAltX,cmQuit,hcExit,
      nil))))))))))))),
    NewSubMenu('~W~indow',hcWindows,NewMenu(
      StdWindowMenuItems(nil)),
    NewSubMenu ('~O~ptions',hcOptions,NewMenu (
      NewItem ('~S~creen...','',kbNoKey,cmScreenOpts,hcScreen,
      NewItem ('~C~olors...','',kbNoKey,cmColors,hcOColors,
      NewItem ('~A~djust palette...','',kbNoKey,cmAdjPal,hcAdjustPalette,
      NewItem ('~D~efault font','F4',kbNoKey,cmRestoreDef,hcDefaultFont,
      nil))))),nil))))))
end;

{
Status line.
}

procedure TCyberAni.InitStatusLine;

var

  R : TRect;

begin
  GetExtent (R);
  R.A.Y := R.B.Y-1;
  StatusLine := New (PStatusLine,Init(R,
    NewStatusDef (0,$FFFF,
      NewStatusKey ('~F1~ Help', kbF1, cmHelp,
      NewStatusKey ('~Alt+F3~ Close',kbAltF3,cmClose,
      NewStatusKey ('~Alt+X~ Exit',kbAltX,cmQuit,
      NewStatusKey ('',kbF4,cmRestoreDef,
      NewStatusKey ('',kbF3,cmLoadFont,
      NewStatusKey ('',kbShiftF3,cmLoadPCX2,
      NewStatusKey ('',kbCtrlF2,cmSaveConfig,
      NewStatusKey ('',kbCtrlF3,cmLoadConfig,
      NewStatusKey ('',kbCtrlF5,cmResize,
      NewStatusKey ('',kbF10,cmMenu,
      nil)))))))))),nil)))
end;

{
Message when safety pool is cut into.
}

procedure TCyberAni.OutOfMemory;

begin
  MessageBox (#3'Not enough memory available to complete operation.  Try closing some windows!',
  nil,mfError+mfOkButton)
end;

{
Load desk top from stream.
}

procedure TCyberAni.LoadDesktop (var S : TStream);

var

  Pal : PString;

begin
  Pal := S.ReadStr;
  if Pal <> nil then
  begin
    Application^.GetPalette^ := Pal^;
    DoneMemory;
    DisposeStr (Pal)
  end
end;

{
Store desk top on stream.
}

procedure TCyberAni.StoreDesktop(var S: TStream);

var

  Pal: PString;

begin
  Pal := @Application^.GetPalette^;
  S.WriteStr (Pal)
end;

{
If VGA is present then start TV app else print error message.
}

var

  CFApp : TCyberAni;

begin
  if VGACardActive then
  begin
    CFApp.Init;
    SysErrorFunc := AppSystemError;
    CFApp.Run;
    CFApp.Done
  end
  else
    PrintStr (#13#10'VGA display required to run CyberAnimate!'#13#10);
end.