Plugin - Export diagram as SVG - Error message "Invalid Image variant"

Plug-in & Open API
1

Hello,

I’m writing a plugin that exports a diagram as SVG format.
I get this exception:

Caused by: java.lang.IllegalArgumentException: Invalid Image variant
	at java.desktop/sun.awt.image.SurfaceManager.getManager(SurfaceManager.java:82)
	at java.desktop/sun.java2d.SurfaceData.getSourceSurfaceData(SurfaceData.java:218)
	at java.desktop/sun.java2d.pipe.DrawImage.renderImageCopy(DrawImage.java:572)
	at java.desktop/sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:67)
	at java.desktop/sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:1027)
	at java.desktop/sun.java2d.pipe.ValidatePipe.copyImage(ValidatePipe.java:186)
	at java.desktop/sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3417)
	at java.desktop/sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3393)

The code is quite simple:

IDiagramUIModel diagram = ApplicationManager.instance().getDiagramManager().getActiveDiagram();

ExportDiagramAsImageOption option = new 
ExportDiagramAsImageOption(ExportDiagramAsImageOption.IMAGE_TYPE_SVG);
        
Image image = ApplicationManager.instance().getModelConvertionManager().exportDiagramAsImage(diagram, option);

Do you have some code sample about that feature please ?

Thank you.
Stephane

2

Hi Stephane,

Thank you for your inquiry. Your code seems to be fine. I have forwarded your case to our engineers to review and will get back to you as soon as possible.

Best regards,
Jick Yeung

3

Hi Jick,

Thank you very much.
I did some additional tests and maybe I cannot use Java2d to create a buffered image for SVG:

            BufferedImage bufferedImage = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_ARGB);
            bufferedImage.getGraphics().drawImage(image, 0, 0, null);

It seems that the second line raises the exception above.

Stephane

4

Hi Stephane,

Could you send me your log file for checking? You can export log file from the About window (Help > About). Then, please upload to:

https://files2.visual-paradigm.com/index.php/s/cCkt3C1OzvjNguE
Password: kjigfb56sdfj

Best regards,
Jick Yeung

5

Hi Jick,

I’ve just uploaded the log zip file + exception full stacktrace + Java code.

Thank you,
Stephane

6

Hi Stephane,

Many thanks. I have forwarded the files to our engineers to study. When there is any update, I will let you know.

Best regards,
Jick Yeung