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Sheet peek/expand, theme-aware media stage, and edge-to-edge viewer bars

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Long-content bottom sheets (Details' Versions/Activity tabs with many
rows) opened locked to nearly full screen height with no room left to
adjust. showNooSheet now measures its content once against the
available height: anything that fits comfortably still sizes to
content as before, but content tall enough to need scrolling opens at
a native-style draggable peek instead, which the user can drag up to
reveal more of (and drag back down to dismiss).

The media viewer's stage was pinned to black regardless of theme,
which read as jarringly out of place in light mode - it now follows
the app's own `bg`. The floating top/bottom bars stay a fixed dark
panel either way (they need to read over arbitrary photo/video
brightness, not over the stage), but both had their SafeArea nested
the wrong way around: it wrapped the whole panel instead of just its
content, so the panel's background stopped short of the actual screen
edge - most visibly the bottom bar ending above the gesture area
instead of extending behind it. The background now wraps the SafeArea
instead.
This commit is contained in:
ayushya
2026-09-28 18:16:44 -04:00
parent 8d17ae1f4b
commit c0f702b00e
5 changed files with 310 additions and 81 deletions
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lib/widgets/noo/overlays/noo_sheet.dart
+118 -28
View File
@@ -1,13 +1,23 @@
import 'package:flutter/material.dart';
import '../../../theme/design_tokens.dart';
/// Fraction of the available height a sheet can reach before it switches
/// from sizing to its content to a draggable peek (see [_NooSheetBody]).
const double _kNooSheetPeekFraction = 0.6;
const double _kNooSheetMinFraction = 0.3;
const double _kNooSheetMaxFraction = 0.95;
/// Mobile bottom sheet on a scrim: radius-28 top, grabber, 22px gap between
/// sections (Noo Design System project, `components/overlays/Sheet.jsx`).
/// `showModalBottomSheet` already supplies the scrim/backdrop-dismiss
/// machinery, so this only standardizes the shape/padding - use it instead
/// of a bare `showModalBottomSheet` for any new sheet. Scroll-controlled so a
/// tall sheet (e.g. share) can grow past half the screen; content scrolls
/// once it hits the top.
/// of a bare `showModalBottomSheet` for any new sheet. Sizes to its content
/// like a plain scroll view for anything that fits comfortably on screen
/// (most sheets: a menu, a handful of settings rows); content long enough to
/// need scrolling (Details' Versions/Activity tabs with many rows, a long
/// accounts list, ...) instead opens at a native-style peek height the user
/// can drag up to reveal more of, rather than snapping straight to nearly
/// the full screen with nothing left to adjust - see [_NooSheetBody].
Future<T?> showNooSheet<T>(
BuildContext context, {
required List<Widget> children,
@@ -20,31 +30,111 @@ Future<T?> showNooSheet<T>(
isScrollControlled: true,
useSafeArea: true,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.vertical(top: Radius.circular(NooRadii.sheetTop)),
borderRadius: BorderRadius.vertical(
top: Radius.circular(NooRadii.sheetTop),
),
),
builder: (context) {
return SafeArea(
child: SingleChildScrollView(
padding: const EdgeInsets.fromLTRB(20, 10, 20, 20),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Container(
width: 36,
height: 5,
decoration: BoxDecoration(
color: colors.surface3,
borderRadius: BorderRadius.circular(NooRadii.pill),
),
),
for (final child in children) ...[
const SizedBox(height: 22),
child,
],
],
),
),
);
},
builder: (context) => _NooSheetBody(children: children),
);
}
/// Renders [children] once, unconstrained, to measure their natural height
/// against the sheet's available height. Content that fits within
/// [_kNooSheetPeekFraction] just stays as that first (plain, content-sized)
/// render - the common case for a short menu/option list. Content taller
/// than that switches to a [DraggableScrollableSheet] opened at the peek
/// fraction instead, so it never jumps straight to (near) full height with
/// no room left to adjust. The one extra layout pass for tall content
/// happens within the sheet's own entrance animation, so it isn't visible
/// as a jump.
class _NooSheetBody extends StatefulWidget {
final List<Widget> children;
const _NooSheetBody({required this.children});
@override
State<_NooSheetBody> createState() => _NooSheetBodyState();
}
class _NooSheetBodyState extends State<_NooSheetBody> {
final _contentKey = GlobalKey();
bool _measured = false;
bool _needsPeek = false;
void _measureAfterFrame(double availableHeight) {
WidgetsBinding.instance.addPostFrameCallback((_) {
if (!mounted || _measured) return;
final box = _contentKey.currentContext?.findRenderObject() as RenderBox?;
final contentHeight = box?.size.height ?? 0;
setState(() {
_measured = true;
_needsPeek = contentHeight > availableHeight * _kNooSheetPeekFraction;
});
});
}
Widget _buildContent(ScrollController? scrollController) {
final colors = context.nooColors;
return SingleChildScrollView(
controller: scrollController,
padding: const EdgeInsets.fromLTRB(20, 10, 20, 20),
child: Column(
key: _measured ? null : _contentKey,
mainAxisSize: MainAxisSize.min,
children: [
Container(
width: 36,
height: 5,
decoration: BoxDecoration(
color: colors.surface3,
borderRadius: BorderRadius.circular(NooRadii.pill),
),
),
for (final child in widget.children) ...[
const SizedBox(height: 22),
child,
],
],
),
);
}
@override
Widget build(BuildContext context) {
return SafeArea(
child: LayoutBuilder(
builder: (context, constraints) {
if (!_measured) {
_measureAfterFrame(constraints.maxHeight);
return _buildContent(null);
}
if (!_needsPeek) {
return _buildContent(null);
}
return DraggableScrollableSheet(
initialChildSize: _kNooSheetPeekFraction,
minChildSize: _kNooSheetMinFraction,
maxChildSize: _kNooSheetMaxFraction,
expand: false,
builder: (context, scrollController) {
// Plain `DraggableScrollableSheet` doesn't dismiss the modal
// route on its own when dragged down to its floor - it just
// stops resizing there - so pop explicitly once it's been
// dragged (near) all the way down, matching a native
// peek sheet's swipe-to-dismiss.
return NotificationListener<DraggableScrollableNotification>(
onNotification: (notification) {
if (notification.extent <= notification.minExtent + 0.01) {
Navigator.of(context).maybePop();
}
return false;
},
child: _buildContent(scrollController),
);
},
);
},
),
);
}
}
lib/widgets/viewer/media_action_bar.dart
+8 -3
View File
@@ -46,9 +46,14 @@ class MediaActionBar extends StatelessWidget {
// favorite/delete stay legible even when the ambient theme is light.
const dark = NooColors.dark;
return SafeArea(
top: false,
child: FrostedGlassContainer(
// The blurred/tinted background lives outside the SafeArea (not inside
// it) so it extends all the way to the physical bottom edge, behind the
// gesture bar/home indicator, instead of the panel itself stopping
// short and leaving that strip unstyled - only the actual row content
// needs padding up and away from the gesture area.
return FrostedGlassContainer(
child: SafeArea(
top: false,
child: Column(
mainAxisSize: MainAxisSize.min,
children: [