The image the user is on: a node-selected image, a node-selected figure,
or a caret anywhere inside a figure (its caption, in practice). Deliberately
stricter than findImage, floating chrome must appear only when
something is really selected, never because an image happens to sit nearby.
The image the user is on: a node-selected image, a node-selected figure, or a caret anywhere inside a figure (its caption, in practice). Deliberately stricter than findImage, floating chrome must appear only when something is really selected, never because an image happens to sit nearby.