feat(ads): home/map banner slot (hidden when removed or unloaded)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-06-13 14:13:29 +09:00
parent 1ec59ba80d
commit 40c2204d7b
3 changed files with 236 additions and 161 deletions
@@ -0,0 +1,57 @@
+// lib/ui/widgets/banner_ad_slot.dart
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:google_mobile_ads/google_mobile_ads.dart';
+
+import '../../state/providers.dart';
+
+/// A self-loading 320x50 banner for the home/map screens. Renders nothing
+/// when ads are removed or the banner has not loaded — never reserves blank
+/// space and never appears on the game screen.
+class BannerAdSlot extends ConsumerStatefulWidget {
+  const BannerAdSlot({super.key});
+
+  @override
+  ConsumerState<BannerAdSlot> createState() => _BannerAdSlotState();
+}
+
+class _BannerAdSlotState extends ConsumerState<BannerAdSlot> {
+  BannerAd? _ad;
+  bool _loaded = false;
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    if (_ad != null) return;
+    if (ref.read(adsRemovedProvider)) return;
+    final ad = ref.read(adServiceProvider).createBanner(
+      listener: BannerAdListener(
+        onAdLoaded: (_) {
+          if (mounted) setState(() => _loaded = true);
+        },
+        onAdFailedToLoad: (ad, _) => ad.dispose(),
+      ),
+    );
+    if (ad == null) return;
+    _ad = ad;
+  }
+
+  @override
+  void dispose() {
+    _ad?.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final ad = _ad;
+    if (ad == null || !_loaded || ref.watch(adsRemovedProvider)) {
+      return const SizedBox.shrink();
+    }
+    return SizedBox(
+      width: ad.size.width.toDouble(),
+      height: ad.size.height.toDouble(),
+      child: AdWidget(ad: ad),
+    );
+  }
+}