Initial commit

2026-07-14 11:11:36 +08:00
commit 656499cf94
604 changed files with 119518 additions and 0 deletions
@@ -0,0 +1,101 @@
+import 'dart:io';
+import 'dart:math' as math;
+import 'dart:ui' show ImageFilter;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../providers/appearance_provider.dart';
+import '../theme/app_theme.dart';
+import 'window_chrome.dart';
+
+
+class ScrollFadeHeader extends ConsumerWidget {
+  final ValueNotifier<double> scrollProgress;
+
+
+  final List<Widget> actions;
+
+  const ScrollFadeHeader({
+    super.key,
+    required this.scrollProgress,
+    this.actions = const [],
+  });
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final tokens = context.appTokens;
+    final isDesktop = Platform.isMacOS || Platform.isWindows;
+    final topPadding = isDesktop
+        ? tokens.titleBarHeight
+        : math.max(MediaQuery.paddingOf(context).top, tokens.titleBarHeight);
+    final overlayHeight = topPadding + 12;
+
+    final headerMode =
+        ref.watch(appearanceProvider).value?.headerMode ?? HeaderMode.frosted;
+    final isFrosted = headerMode == HeaderMode.frosted;
+    final theme = Theme.of(context);
+
+    final background = ValueListenableBuilder<double>(
+      valueListenable: scrollProgress,
+      builder: (_, raw, _) {
+        final p = raw.clamp(0.0, 1.0);
+        if (isFrosted) {
+          final entryProgress = (p / 0.25).clamp(0.0, 1.0);
+          final glassProgress =
+              Curves.easeOutCubic.transform(entryProgress) * 0.42;
+          return ClipRect(
+            child: BackdropFilter(
+              filter: ImageFilter.blur(
+                sigmaX: glassProgress * 10,
+                sigmaY: glassProgress * 10,
+              ),
+              child: DecoratedBox(
+                decoration: BoxDecoration(
+                  color: theme.colorScheme.surface.withValues(
+                    alpha: glassProgress * 0.88,
+                  ),
+                  border: Border(
+                    bottom: BorderSide(
+                      color: theme.colorScheme.onSurface.withValues(
+                        alpha: glassProgress * 0.08,
+                      ),
+                      width: 1,
+                    ),
+                  ),
+                ),
+              ),
+            ),
+          );
+        }
+        return ColoredBox(
+          color: theme.colorScheme.surface.withValues(alpha: p),
+        );
+      },
+    );
+
+    return SizedBox(
+      height: overlayHeight,
+      width: double.infinity,
+      child: Stack(
+        children: [
+          Positioned.fill(child: IgnorePointer(child: background)),
+          if (actions.isNotEmpty)
+            Positioned(
+              right: 0,
+              top: tokens.chromeInset,
+              height: WindowChrome.controlsHeight,
+              child: Row(
+                mainAxisSize: MainAxisSize.min,
+                crossAxisAlignment: CrossAxisAlignment.center,
+                children: [
+                  ...actions,
+                  SizedBox(width: WindowChrome.reservedTrailingWidth(tokens)),
+                ],
+              ),
+            ),
+        ],
+      ),
+    );
+  }
+}