Files
minstrel/flutter_client/lib/library/widgets/play_circle_button.dart
T
bvandeusen 872b0de304 feat(flutter): #393 — always-visible play button on home cards
AlbumCard / ArtistCard / PlaylistCard gain a 44dp circular play
button overlaid bottom-right of the cover art. Mirrors the
hover-revealed .play-overlay on the web cards; always visible
because hover is not a real interaction on touch.

Per-card semantics match the web:

- AlbumCard: fetches /api/albums/{id}, starts playback from track 0.
- ArtistCard: fetches /api/artists/{id}/tracks, Fisher-Yates shuffles,
  plays from index 0 (matches web's playQueue(shuffle(tracks), 0)).
- PlaylistCard: fetches /api/playlists/{id}, materializes available
  rows into TrackRef, plays from index 0. Disabled state when
  trackCount == 0 — semi-transparent button, taps ignored.

Shared PlayCircleButton widget manages loading state (spinner during
fetch) so each card's onPressed can stay async without re-entrancy
guards. Cards become ConsumerWidget so they can reach the
playerActionsProvider + relevant API providers; constructor surface
unchanged so existing call sites (artist_detail, library_screen,
home_screen) keep working.

CompactTrackCard unchanged — its tap already plays-from-here.

For #393 / #356 umbrella.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-13 12:35:57 -04:00

97 lines
3.0 KiB
Dart

import 'package:flutter/material.dart';
import '../../theme/theme_extension.dart';
/// Always-visible 44dp circular play button overlaid on home-screen
/// card art (AlbumCard / ArtistCard / PlaylistCard). Mirrors the
/// hover-revealed `.play-overlay` on the web cards, but always shown
/// because hover is not a real interaction on touch.
///
/// Manages its own loading state via [_starting] so the caller's tap
/// handler can be `Future<void> Function()` without worrying about
/// re-entrancy. Disabled state suppresses the tap (used for empty
/// playlists).
class PlayCircleButton extends StatefulWidget {
const PlayCircleButton({
required this.onPressed,
this.enabled = true,
this.size = 44,
super.key,
});
/// Tap handler. Returns a Future so the button can show a spinner
/// during the play setup (fetch detail tracks, etc.).
final Future<void> Function() onPressed;
/// When false, the button is rendered semi-transparent and taps are
/// ignored. Empty playlists / artists with no tracks should disable.
final bool enabled;
/// Outer diameter in logical pixels. 44 is the iOS / Android
/// touch-target minimum; matches the design doc.
final double size;
@override
State<PlayCircleButton> createState() => _PlayCircleButtonState();
}
class _PlayCircleButtonState extends State<PlayCircleButton> {
bool _starting = false;
Future<void> _handleTap() async {
if (_starting || !widget.enabled) return;
setState(() => _starting = true);
try {
await widget.onPressed();
} finally {
if (mounted) setState(() => _starting = false);
}
}
@override
Widget build(BuildContext context) {
final fs = Theme.of(context).extension<FabledSwordTheme>()!;
final iconSize = widget.size * 0.5;
return Material(
color: Colors.transparent,
shape: const CircleBorder(),
child: InkResponse(
onTap: widget.enabled ? _handleTap : null,
radius: widget.size / 2,
containedInkWell: true,
customBorder: const CircleBorder(),
child: Container(
width: widget.size,
height: widget.size,
decoration: BoxDecoration(
color: fs.accent.withValues(alpha: widget.enabled ? 1.0 : 0.5),
shape: BoxShape.circle,
boxShadow: const [
BoxShadow(
color: Color(0x66000000),
blurRadius: 6,
offset: Offset(0, 2),
),
],
),
alignment: Alignment.center,
child: _starting
? SizedBox(
width: iconSize,
height: iconSize,
child: CircularProgressIndicator(
strokeWidth: 2,
valueColor: AlwaysStoppedAnimation<Color>(fs.parchment),
),
)
: Icon(
Icons.play_arrow,
color: fs.parchment,
size: iconSize,
),
),
),
);
}
}