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feat: overlays, toasts and tooltips #84
Description
What
Floating widgets that are not windows: HUD elements with no chrome, anchored to a surface corner, an edge or another rect, and stacked above windows. A simulation's readout, a help button and cursor coordinates are the model.
Needs #78, #79 and #81, the overlay and tooltip bands from #82, and #96 for time (hover delay, toast timers, fades) and wake_at, so a pending tooltip or fade asks for a frame rather than the app redrawing constantly.
Acceptance
- An overlay is placed by an anchor (any of nine points of the surface or of a given rect) plus an offset, and sizes to its content
- An overlay has no title, frame or background unless its style gives one, and blocks input only where its widgets are, so the world under it stays interactive
- Overlays draw in their own band above windows and docks, ordered among themselves
- Optional fade by pointer proximity
- Toasts built on overlays: a stack of timed notifications at a chosen anchor, with fade in and out
- Tooltips built on overlays: anchored to the pointer or to a widget, after a hover delay, staying on screen
Activity
feat(#84): an opacity scope every painted color passes through
feat(#84): overlays name their order among overlays
feat(#84): overlays placed by anchor, sized to content, claiming nothing
feat(#84): toasts, a stack of timed notifications on an overlay
feat(#84): tooltips after a hover delay, at the pointer or the widget
docs(#84): overlays, toasts and tooltips
Merge pull request #143 from briar-systems/feat/84