Optional ReadonlytargetOptional ReadonlyfillFull-frame dim overlay. Pass null or return false from shouldRender to
disable focus rendering.
Optional ReadonlyshapeRectangle fallback geometry. Pass null to focus only actual masks, polygons, and visible heatmap regions.
Optional ReadonlycornerRounded-rectangle fallback corner radius in media pixels.
Optional Readonlyshould
Which interaction state should keep the media undimmed.