Module rasterize 

SVG / PNG helpers for Adaptive Cards fallbacks. SVG builders + optional PNG rasterize for Adaptive Cards Image data URIs.

Used for chart / canvas / gauge / shape / zstack / gradient backgrounds that Adaptive Cards cannot express natively.

Functions

element_to_png_data_uri

Convenience: element → PNG data URI.

element_to_svg

Build an SVG document for chart/canvas/gauge/shape; None for other element types.

gradient_to_png_data_uri

Rasterize a gradient background to a PNG data URI when rasterize is enabled.

gradient_to_svg

Build an SVG gradient fill for Adaptive Cards backgroundImage baking.

svg_to_data_uri

Rasterize SVG to data:image/png;base64,… when the rasterize feature is on.