Add a DensitySwap widget that renders the widest variant of the tool
area that fits the current width. The ribbon builds two variants via the
new build_tool_row(compact) helper: full-size panels, and a compact one
where LargeTool/LargeDropdown collapse to small icon columns (the
layer/properties/style combos always stay full). render_small now also
matches the Large* variants so they can be drawn small.
First stage of the adaptive tool area (shrink -> wrap -> collapse).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Add shared adaptive-bar widgets in src/ui/wrap_bar.rs:
- WrapBar: two-block bar (lead + optional Fill middle + trail). Fits on
one row, otherwise the trailing block drops below; with no middle both
blocks flex-wrap in their own row bands and stack so a wrapped lead item
never shares a row with a trailing item.
- WrapFlow: CSS-style flex-wrap row that spreads its items across as many
rows as the width needs.
Ribbon tab row: quick-access buttons and undo/redo are merged into one
WrapFlow; the tabs are a second WrapFlow. Dropdown overlays anchor to the
measured (possibly taller) bar height instead of a hardcoded 28px.
Status bar: the hamburger menu plus the Model/layout tabs form one
WrapFlow; the status pills form another. The layout-tab scroll arrows and
horizontal scrollable are removed in favour of wrapping.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
