feat(brand): app icon painter + generated 1024px icon PNGs

Introduces AppIconMark (navy gradient field + 2×2 glossy blocks reusing paintGlossyTile) and a testWidgets generator that writes icon.png, icon_background.png, and icon_foreground.png to assets/icon/ for the upcoming flutter_launcher_icons task. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-06-13 18:06:18 +09:00
parent 498fb6af83
commit 099ced377d
5 changed files with 89 additions and 0 deletions
@@ -0,0 +1,44 @@
+// test/tool/generate_brand_assets_test.dart
+import 'dart:io';
+import 'dart:ui';
+
+import 'package:block_seasons/ui/branding/app_icon_painter.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+Future<void> _writePng(String path, int size, void Function(Canvas) draw) async {
+  final recorder = PictureRecorder();
+  final canvas = Canvas(recorder);
+  draw(canvas);
+  final picture = recorder.endRecording();
+  final image = await picture.toImage(size, size);
+  final bytes = await image.toByteData(format: ImageByteFormat.png);
+  File(path).parent.createSync(recursive: true);
+  File(path).writeAsBytesSync(bytes!.buffer.asUint8List());
+}
+
+void main() {
+  testWidgets('generate launcher icon PNGs', (tester) async {
+    const s = 1024;
+    final full = Rect.fromLTWH(0, 0, s.toDouble(), s.toDouble());
+
+    await tester.runAsync(() async {
+      // Master (iOS + fallback): opaque navy + blocks at 60%.
+      await _writePng('assets/icon/icon.png', s, (c) {
+        AppIconMark.paintBackground(c, full);
+        AppIconMark.paintBlocks(c, s.toDouble(), groupFraction: 0.6);
+      });
+      // Adaptive background: navy only.
+      await _writePng('assets/icon/icon_background.png', s, (c) {
+        AppIconMark.paintBackground(c, full);
+      });
+      // Adaptive foreground: blocks only (transparent), 52% for the safe zone.
+      await _writePng('assets/icon/icon_foreground.png', s, (c) {
+        AppIconMark.paintBlocks(c, s.toDouble(), groupFraction: 0.52);
+      });
+    });
+
+    for (final f in ['icon.png', 'icon_background.png', 'icon_foreground.png']) {
+      expect(File('assets/icon/$f').existsSync(), isTrue, reason: f);
+    }
+  });
+}