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unit Preview; |
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interface |
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uses |
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Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, |
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Dialogs, StdCtrls, Template, ExtCtrls, Math, StrUtils, |
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OniDataClass, OniImgClass, Data, Menus, Buttons; |
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|
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type |
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TForm_Preview = class(TForm_ToolTemplate) |
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lbl_notpossible: TLabel; |
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panel_buttons: TPanel; |
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btn_dec: TButton; |
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btn_startstop: TButton; |
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btn_inc: TButton; |
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img: TImage; |
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timer: TTimer; |
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procedure FormCreate(Sender: TObject); |
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procedure NewFile(fileinfo: TFileInfo); |
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|
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procedure PreviewImage; |
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procedure PreviewTXAN; |
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procedure btn_incClick(Sender: TObject); |
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procedure btn_decClick(Sender: TObject); |
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procedure btn_startstopClick(Sender: TObject); |
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procedure timerTimer(Sender: TObject); |
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procedure panel_buttonsResize(Sender: TObject); |
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|
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procedure DrawImage(index: Integer); |
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procedure SetBitmapCount(Count: Integer); |
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procedure LoadImage(fileid, index: Integer); |
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private |
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bitmaps: array of TBitmap; |
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actualimg: Byte; |
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_fileid: Integer; |
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public |
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end; |
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|
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var |
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Form_Preview: TForm_Preview; |
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|
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implementation |
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{$R *.dfm} |
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|
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|
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procedure TForm_Preview.FormCreate(Sender: TObject); |
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begin |
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inherited; |
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Self.OnNewFileSelected := NewFile; |
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end; |
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|
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|
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procedure TForm_Preview.NewFile(fileinfo: TFileInfo); |
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var |
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ext: String; |
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begin |
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_fileid := fileinfo.ID; |
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if _fileid >= 0 then |
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begin |
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lbl_notpossible.Visible := False; |
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Self.img.Visible := True; |
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Self.timer.Enabled := False; |
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Self.panel_buttons.Visible := False; |
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ext := fileinfo.Extension; |
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if (ext = 'PSpc') or (ext = 'TXMB') or (ext = 'TXMP') then |
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PreviewImage |
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else if ext = 'TXAN' then |
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PreviewTXAN |
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else |
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begin |
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Self.lbl_notpossible.Visible := True; |
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Self.img.Visible := False; |
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end; |
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end |
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else |
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begin |
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Self.img.Visible := False; |
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lbl_notpossible.Visible := False; |
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Self.timer.Enabled := False; |
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Self.panel_buttons.Visible := False; |
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end; |
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end; |
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|
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|
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procedure TForm_Preview.LoadImage(fileid, index: Integer); |
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var |
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Data: Tdata; |
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memstream: TMemoryStream; |
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OniImage: TOniImage; |
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|
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begin |
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OniImage := TOniImage.Create; |
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OniImage.Load(Connection, fileid); |
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Data := OniImage.GetAsBMP; |
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OniImage.Free; |
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|
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memstream := TMemoryStream.Create; |
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memstream.Write(Data[0], Length(Data)); |
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memstream.Seek(0, soFromBeginning); |
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bitmaps[index].LoadFromStream(memstream); |
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memstream.Free; |
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end; |
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|
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|
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procedure TForm_Preview.DrawImage(index: Integer); |
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begin |
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BitBlt(img.Canvas.Handle, 0, 0, img.Width, img.Height, |
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bitmaps[index].Canvas.Handle, 0, 0, WHITENESS); |
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BitBlt(img.Canvas.Handle, 0, 0, bitmaps[index].Width, bitmaps[index].Height, |
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bitmaps[index].Canvas.Handle, 0, 0, SRCCOPY); |
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img.Invalidate; |
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end; |
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|
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|
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procedure TForm_Preview.SetBitmapCount(Count: Integer); |
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var |
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i: Integer; |
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begin |
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if Length(bitmaps) > Count then |
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begin |
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for i := Count to High(bitmaps) do |
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bitmaps[i].Free; |
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SetLength(bitmaps, Count); |
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end; |
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if Length(bitmaps) < Count then |
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begin |
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i := Length(bitmaps); |
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SetLength(bitmaps, Count); |
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for i := i to High(bitmaps) do |
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bitmaps[i] := TBitmap.Create; |
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end; |
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end; |
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|
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|
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procedure TForm_Preview.PreviewImage; |
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begin |
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SetBitmapCount(1); |
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LoadImage(_fileid, 0); |
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DrawImage(0); |
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end; |
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|
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|
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procedure TForm_Preview.PreviewTXAN; |
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var |
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loop_speed: Word; |
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linkcount: LongWord; |
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link: LongWord; |
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i: Byte; |
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begin |
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Connection.LoadDatFilePart(_fileid, $14, SizeOf(loop_speed), @loop_speed); |
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Connection.LoadDatFilePart(_fileid, $1C, SizeOf(linkcount), @linkcount); |
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SetBitmapCount(linkcount); |
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for i := 0 to linkcount - 1 do |
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begin |
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Connection.LoadDatFilePart(_fileid, $20 + i * 4, SizeOf(link), @link); |
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link := link div 256; |
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if link = 0 then |
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link := _fileid - 1; |
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LoadImage(link, i); |
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end; |
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actualimg := 254; |
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Self.timer.Interval := Floor(loop_speed * (1 / 60) * 1000); |
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Self.timer.Enabled := False; |
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Self.btn_startstopClick(Self); |
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Self.panel_buttons.Visible := True; |
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end; |
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|
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|
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procedure TForm_Preview.timerTimer(Sender: TObject); |
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begin |
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btn_incClick(Self); |
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end; |
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|
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|
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procedure TForm_Preview.btn_startstopClick(Sender: TObject); |
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begin |
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Self.timer.Enabled := not Self.timer.Enabled; |
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Self.btn_dec.Enabled := not Self.timer.Enabled; |
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Self.btn_inc.Enabled := not Self.timer.Enabled; |
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if Self.timer.Enabled then |
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Self.btn_startstop.Caption := 'Stop automatic' |
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else |
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Self.btn_startstop.Caption := 'Start automatic'; |
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end; |
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|
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|
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procedure TForm_Preview.btn_decClick(Sender: TObject); |
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begin |
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if actualimg > 0 then |
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Dec(actualimg) |
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else |
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actualimg := High(bitmaps); |
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Self.Caption := 'Preview ' + Connection.GetFileInfo(_fileid).FileName + |
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' (' + IntToStr(actualimg + 1) + '/' + IntToStr(Length(bitmaps)) + ')'; |
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DrawImage(actualimg); |
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end; |
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|
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|
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procedure TForm_Preview.btn_incClick(Sender: TObject); |
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begin |
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if actualimg < High(bitmaps) then |
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Inc(actualimg) |
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else |
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actualimg := 0; |
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Self.Caption := 'Preview ' + Connection.GetFileInfo(_fileid).FileName + |
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' (' + IntToStr(actualimg + 1) + '/' + IntToStr(Length(bitmaps)) + ')'; |
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DrawImage(actualimg); |
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end; |
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|
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|
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procedure TForm_Preview.panel_buttonsResize(Sender: TObject); |
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begin |
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btn_startstop.Width := panel_buttons.Width - 45; |
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btn_inc.Left := panel_buttons.Width - 23; |
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end; |
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|
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|
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begin |
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AddToolListEntry('preview', 'Preview-Window', ''); |
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end. |
