Re: RichAction and TPDFDocument componant

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Adam Allen

Posted: 02/19/2005 19:14:28

Hello Sergey,

No, not fixed yet, same error;

here is the complete code, your code working without the PDF with getting

error with PDF component

Thanks

procedure TForm3.Button4Click(Sender: TObject);

var i, LeftMargin, TopMargin, RightMargin, BottomMargin, DocWidth,

DocHeight: Integer;

  pt: TPoint;

Stream: TMemoryStream;

  const MinDocSize = 50;

begin

  LeftMargin   := GetMargin(txtLeft);

  TopMargin    := GetMargin(txtTop);

  RightMargin  := GetMargin(txtRight);

  BottomMargin := GetMargin(txtBottom);

  pdf.Resolution := Screen.PixelsPerInch;

  pdf.FileName := 'c:\test.pdf';

  pdf.BeginDoc;

// pdf.Page[0].Size := GetPageSize;

// pdf.Page[0].Orientation := GetPageOrientation;

  DocWidth  := pdf.Page[0].Width - (LeftMargin+RightMargin);

  DocHeight := pdf.Page[0].Height - (TopMargin+BottomMargin);

  if (DocWidth<MinDocSize) then begin

    ShowError('Horizontal margins are too large');

    txtLeft.SetFocus;

    pdf.Abort;

    exit;

  end;

  if (DocHeight<MinDocSize) then begin

    ShowError('Vertical margins are too large');

    txtTop.SetFocus;

    pdf.Abort;

    exit;

  end;

  Screen.Cursor := crHourGlass;

  try

    ShowText('Formatting...', True);

  Stream := TMemoryStream.Create;

  RichViewEdit1.SaveRVFToStream(Stream,False);

  Stream.Position := 0;

  rvrh.RichView.Style := RVStyle1;

  rvrh.RichView.RVFTextStylesReadMode := rvf_sIgnore;

  rvrh.RichView.RVFParaStylesReadMode := rvf_sIgnore;

  if rvoTagsArePChars in RichViewEdit1.Options then

  rvrh.RichView.Options := rvrh.RichView.Options+[rvoTagsArePChars];

  rvrh.RichView.Clear;

  rvrh.RichView.LoadRVFFromStream(Stream);

  Stream.Free;

// showmessage(inttostr(rvrh.RichView.ItemCount));

  rvrh.Init(pdf.Canvas, DocWidth); //here is the problem can not assign it

to pdf.Canvas

    while rvrh.FormatNextPage(DocHeight) do;

    for i := 0 to rvrh.PagesCount-1 do begin

      ShowText(Format('Collecting PDF pages (%d of %d)... ', [i,

rvrh.PagesCount]), False);

      if i>0 then begin

        pdf.NewPage;

        pdf.Page[i].Size        := pdf.Page[0].Size;

        pdf.Page[i].Orientation := pdf.Page[0].Orientation;

      end;

      SetViewportOrgEx(pdf.Canvas.Handle, LeftMargin, TopMargin, @pt);

      rvrh.DrawPage(i+1, pdf.Canvas, False, DocHeight);

      SetViewportOrgEx(pdf.Canvas.Handle, pt.x, pt.y, nil);

    end;

    ShowText('Writing PDF file...', True);

    pdf.EndDoc;

  finally

//  Stream.Free;

// application.Terminate;

  end;

end;

"Sergey Tkachenko" <[email protected]> wrote in message

news:[email protected]...

> Problems in this code:

>

> 1) Since rvrh.RichView is empty before calling DeleteUnusedStyles, this

> call

> deletes all styles but the 0-th.

> But these styles are used also by RichViewEdit1, so the most likely the

> document is damaged

> 2) rvrh.PagesCount>0 only if the document is formatted (rvrh.Init and

> rvrh.FormatNextPage are called).

> You can check if the document is loaded checking rvrh.RichView.ItemCount.

> In my tests, the document is loaded.

> 2) rvrh.Ready should always be False (this property works properly only in

> RVPrint), so the code inside IF should never be called. But when I removed

> this condition (also, I removed  the lines

>  pdf.Page[0].Size := GetPageSize;

>  pdf.Page[0].Orientation := GetPageOrientation)

> the document was successfully converted to PDF.

>

> The best way to copy the document in the reporthelper:

>

>  Stream: TMemoryStream;

>

>  Stream := TMemoryStream.Create;

>  RichViewEdit1.SaveRVFToStream(Stream,False);

>  Stream.Position := 0;

>  rvrh.RichView.Style := RVStyle1;

>  rvrh.RichView.RVFTextStylesReadMode := rvf_sIgnore;

>  rvrh.RichView.RVFParaStylesReadMode := rvf_sIgnore;

>  if rvoTagsArePChars in RichViewEdit1.Options then

>    rvrh.RichView.Options := rvrh.RichView.Options+[rvoTagsArePChars];

>  rvrh.RichView.Clear;

>  rvrh.RichView.LoadRVFFromStream(Stream);

>  Stream.Free;

>  showmessage(inttostr(rvrh.RichView.ItemCount));

>

> And remove

> if  rvrh.Ready then

>

>