wpf diagram export pdf bug:RadialGradientBrush and LinearGradientBrush can not show color opacity

[wu]

when the RadDiagramShape background is set to  LinearGradientBrush or RadialGradientBrush ,if the GradientStop color is opacity color ,

After exporting the PDF, the transparency effect cannot be displayed,like this from SDK Sample(ExportToPDF_WPF project):

<telerik:RadDiagramShape.Background>
<RadialGradientBrush Center=" 0.5, 0.5" GradientOrigin="0.5, 0.5" RadiusX="0.5" RadiusY="0.5">
<RadialGradientBrush.GradientStops>
                                               <GradientStop Offset="0" Color="#4DE44F0F" />
                                               <GradientStop Offset="0.5" Color="#7E1513B9" />
                                               <GradientStop Offset="1" Color="#960FB814" />
</RadialGradientBrush.GradientStops>
</RadialGradientBrush>
</telerik:RadDiagramShape.Background>

UI display effect:

The effect after exporting PDF：

[Martin Ivanov]

Hello Wu,

The export to PDF example works with the Telerik's PdfProcessing library. The code in the example properly handles the opacity, but this is not applied in the final document during the export. That is a known issue in the PdfProcessing library, which you can find logged here. Currently, there is no workaround for this.

Regards,
Martin Ivanov
Progress Telerik