FR-UI-1's table has put tablet portrait in the compact class since the
register was written. D-N2 settled that it does not belong there: a
12-inch tablet is about 1024 logical pixels across in portrait and
EXPANDED_MIN_WIDTH is 820, so both orientations of both targets are
expanded, and compact fires only on a desktop window dragged narrow. The
code has always agreed - apply_layout_class reads the window's width and
nothing else - so the register was the last place still saying otherwise.
What portrait actually needed was a different axis. D-N7 docks the
develop column under the photograph on a tall window, set from the
window's aspect and independent of the layout class: a 960-wide portrait
window is expanded and wants the dock, a 1500-wide landscape one is
expanded and does not. That is a placement rather than a mode, so the
clause about the transition being continuous stands as written, and the
requirement now records the side the column takes as its own property.
FR-UI-2 gains one clause for the same reason. It said modality affects
control sizing and affordances "not layout", which D-N6 reversed: under
touch the group selector leaves the strip above the column for the tool
rail, and groups-in-rail in toolrail.slint is what moves it.
dtourolle
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