liquidum 0.2.0

An iOS 26-style glass tab bar for Flutter, measured against UIKit: real refraction, a lifting lens, adaptive glass, a search tab, an accessory and minimizing.

0.2.0

• Breaking: the debug* parameters of GlassTabBar are replaced by a GlassTabBarDebug widget above the bar, whose GlassTabBarDebugOptions hold the same settings. GlassTabBarPhysics, GlassAppearance, GlassTabBarDebugView and GlassTabBarOptics moved to package:liquidum/liquidum_debug.dart, which is not covered by semantic versioning. GlassSpring, GlassShape, GlassField, GlassBackdropState, GlassBackdrop.under and the render objects (RenderGlass, RenderGlassTabBar) are no longer public.
• Backdrop sampling follows drawn frames: no timers or snapshots while idle or in the background. Over a still backdrop the bar now stops reading it; before, each reading drew frames that called for the next one, up to 20 readings a second for as long as the bar was shown.

0.1.1

• License: the Licensed Work now covers version 0.0.1 and later, each version changes to the Apache License 2.0 four years after it is published, and the non-commercial definition is clearer (indirect revenue, freelance and client work). Code and behavior are unchanged.
• README: clearer description, a license summary at the top, and a note that Liquidum is not affiliated with Apple.
• Source comments reworded; research notes moved to doc/comparison.

0.1.0

• GlassTab.search: a search tab in its own glass circle, as UIKit's UISearchTab; with a controller, it opens into a search field (the tabs collapse into a circle, a close button while typing, the bar above the keyboard).
• accessory: UIKit's bottom accessory, a glass capsule above the bar.
• minimizeOnScroll: the bar collapses as a page scrolls down, with UIKit's springs (tabBarMinimizeBehavior), its tabs blurring and fading in place and the selected icon sliding into the circle, as UIKit's crossfade does.
• Accessibility: Increase Contrast and Reduce Motion followed from the system; reduceTransparency to draw the glass as Reduce Transparency does.
• The frost is now a real blur drawn before the glass, as UIKit's: no more ghosting behind fine lines, and closer to UIKit at the bar's edges. It takes a second backdrop capture.
• The lens's darker band inside its top edge, as UIKit's.
• Filtered sampling of the backdrop and the tabs' content.

0.0.1

First preview.

• GlassTabScaffold and GlassTab: an iOS 26 tab bar with each tab's page, its own navigator and kept state, in a few lines.
• GlassTabBar: the bar alone, with UIKit's glass optics, the lifting lens and its springs, lighting, and light and dark appearances that adapt to the content under it.
• Styling: selected and unselected colors, badges, selected icons, SVG and image icons, label style, glass tints for the bar, the resting selection and the lens (GlassDecoration with gradients, drop shadows, inner shadows, and tinted or painted fills), padding and margin.
• Right-to-left layout, and UIKit's bar widths for three tabs or fewer.
• Glass, GlassMaterial and GlassBackdrop: liquid glass for any widget.