Wrong rendering of TeeChart Metafile

chachora · 2016-01-26 14:24:06

Metafile generated by TeeChart is not rendered correctly.
When I render it with bitmap, I get the following image:

But in pdf it is completely wrong:

This is my code:

var
  PdfDoc: TPdfDocumentGDI;
  PdfPage: TPdfPage;
  ChartMetafile: TMetafile;
  bmp: TBitmap;
begin
  ChartMetafile := nil;
  bmp := nil;
  PdfDoc := TPdfDocumentGDI.Create(False, 0, true, nil);
  try
    PdfPage := PdfDoc.AddPage;
    PdfPage.PageLandscape := true;

    ChartMetafile := Chart.TeeCreateMetafile(False, Rect(0,0, PdfPage.PageWidth, PdfPage.PageHeight));

    bmp := TBitmap.Create;
    bmp.Width := ChartMetafile.Width;
    bmp.Height := ChartMetafile.Height;
    bmp.Canvas.Draw(0, 0, ChartMetafile);
    bmp.SaveToFile('c:\temp\test.bmp');

    PdfDoc.VCLCanvas.Draw(0, 0, ChartMetafile);
    PdfDoc.SaveToFile('c:\temp\test.pdf');

  finally
    PdfDoc.Free;
    ChartMetafile.Free;
  end;

I tried it with RenderMetafile also, it gave the same result. What can be the problem?

Last edited by chachora (2016-01-26 14:28:05)

ab · 2016-01-26 14:28:04

Are you using the latest revision of the library?
Current is 1.18.2306.

We use this in production, with no problem - but not from TeeChart as source.
There is even a dedicated test very close to this in our regression tests - see TestSQL3.pdf as generated by TestSQL3.exe.

chachora · 2016-01-26 14:31:33

I've downloaded it from GitHub, version is 1.18, but there is not build number mentioined.

chachora · 2016-01-26 14:53:20

I downloaded the latest mORMot, but still the issue remains.

ab · 2016-01-26 15:37:21

Could you put a link to the .emf file?

chachora · 2016-01-27 06:20:06

I have tried to export with different settings and it worked!
Finally, I found the settings of TeeChart when the problem starts:
1. GDI+ shall be selected as a Render
2. 3D mode shall be enabled
3. Any series have to be on the chart.

When I changed the render to GDI or disable 3D mode, library works just fine.
Emf files are below:
1. GDI and 3D
3d_gdi.emf
2. GDI+ and 3D
3d_gdi+.emf

ab · 2016-01-27 12:44:59

In fact, there is no EMF+ file standard.
The GdiPlus library does not support such kind of serialization.

The SynPDF library expect indeed valid EMF content as input.
Here is the rendered content:

chachora · 2016-01-31 06:33:44

So, it means that TeeChart exports to EMF file with wrong format when GDI+ and 3D enabled in the settings?

ab · 2016-01-31 12:55:04

Yes, it seems that TeeChart creates not a true EMF file, but some EMF-like format.
So you should create a true EMF format, using plain GDI, without 3D.

MtwStark · 2017-12-13 13:03:39

I use TeeChart and print them on PDF with SynPDF

MyChart.SaveToMetafileEnh(Filename);

saves a valid EMF file.

mORMot Open Source

#1 2016-01-26 14:24:06

Wrong rendering of TeeChart Metafile

#2 2016-01-26 14:28:04

Re: Wrong rendering of TeeChart Metafile

#3 2016-01-26 14:31:33

Re: Wrong rendering of TeeChart Metafile

#4 2016-01-26 14:53:20

Re: Wrong rendering of TeeChart Metafile

#5 2016-01-26 15:37:21

Re: Wrong rendering of TeeChart Metafile

#6 2016-01-27 06:20:06

Re: Wrong rendering of TeeChart Metafile

#7 2016-01-27 12:44:59

Re: Wrong rendering of TeeChart Metafile

#8 2016-01-31 06:33:44

Re: Wrong rendering of TeeChart Metafile

#9 2016-01-31 12:55:04

Re: Wrong rendering of TeeChart Metafile

#10 2017-12-13 13:03:39

Re: Wrong rendering of TeeChart Metafile

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