AnchoredLabels

Anchored labels: anchors to placements to pixels (field-presentation §FVL-2, matrix FVW-57).

In the namespace utility::ui. Declared in src/libs/libutil/utility/ui/AnchoredLabels.hpp.

Detailed description

Pure: it reads no scene, no widget and no GPU state. layout() and paint() are two calls, so a caller can test the placement with no QPainter, and a capture can paint a placement that the viewport made. One object keeps the last placement, for the stability of the declutter.