material_layout 0.0.1

Material 3 adaptive layouts for Flutter: the canonical list-detail, supporting-pane and feed layouts, adaptive navigation placement, resizable panes, adaptive sheets and foldable support.

Changelog

0.0.1

Initial release.

Layouts

• ListDetailLayout, SupportingPaneLayout and FeedLayout — the three Material 3 canonical layouts, each adapting from one pane to three.
• TwoPane — the engine underneath: fixed-and-flexible or split-pane, with drag-to-resize, magnet snapping, double-tap collapse, and persistent or temporary width semantics.
• AdaptiveNavigationScaffold — places a bottom bar or a navigation rail by breakpoint (and by pane count at medium), animating the swap.
• PaneContainer — the pane surface: a Material 3 surface container role and corner radius, plus an ink surface for its content.
• AdaptiveGrid and AdaptiveBody helpers.

Foundation

• WindowSizeClass / WindowHeightSizeClass, WindowSize, and Breakpoints as a single overridable source of truth.
• AdaptiveLayoutTheme for breakpoints, spacing and the body width cap.
• AdaptiveBuilder, adaptiveValue, and BuildContext extensions.

Sheets

• showAdaptiveSheet, showSideSheet, showAppBottomSheet, and the inline SideSheet surface.
• Standard sheets are genuinely persistent — no barrier, so the app stays interactive underneath — while modal ones block, as Material describes.
• Both forms drag away to dismiss, share Flutter's bottom-sheet motion, and accept a custom dragHandle.

Adaptation

• Panes enter on an expressive spring and leave on a curve; an exit that overshoots would read as a bounce back into view.
• A pane that no longer fits slides off the trailing edge — drag handle included — or reflows below the content, rather than disappearing between frames.
• Foldables: the split snaps onto a vertical hinge when one is present.
• RTL throughout.