How to adapt a custom extension to the current theme

How to adapt a custom extension to the current theme

You can use the Document.GetStyle() method to get the style properties of elements in the user interface. There are various related classes such as StyleProperties, ColorInfo, FontStyle, FontWeight etc. See the attached image (Filename:Styling API.png) to get a brief idea about these classes. In the RenderCore() of the CustomVisualization you can use the Document.GetStyle() to get the current theme of the Analysis and then use this in the visual to adapt.

Example:

var visualContentStyle = document.GetStyle(StyleElement.VisualContent);
            var backgroundColor = visualContentStyle.GetEffectiveBackgroundColor();
            using (Brush backgroundBrush = new SolidBrush(backgroundColor))
            using (Pen backgroundPen = new Pen(backgroundColor))
            {
                renderArgs.Graphics.DrawRectangle(backgroundPen, renderArgs.Bounds);
                renderArgs.Graphics.FillRectangle(backgroundBrush, renderArgs.Bounds);
            }

• https://docs.tibco.com/pub/doc_remote/sfire_dev/area/doc/api/TIB_sfire-analyst_api/?topic=html/M_Spotfire_Dxp_Application_Document_GetStyle.htm
• https://docs.tibco.com/pub/doc_remote/sfire_dev/area/doc/api/TIB_sfire-analyst_api/?topic=html/T_Spotfire_Dxp_Application_StyleElement.htm
• https://docs.tibco.com/pub/doc_remote/sfire_dev/area/doc/api/TIB_sfire-analyst_api/?topic=html/T_Spotfire_Dxp_Framework_Styles_StyleProperties.htm