refactor(theme): 明 / 暗判定收进 AppPalette.isDark

lib/theme/app_theme.dart

@@ -99,6 +99,16 @@ class AppPalette {
   Color get accentSoftBg =>
       Color.alphaBlend(accent.withValues(alpha: 0.20), background);
 
+  /// 明 / 暗判定:按**窗口底色**的亮度切,阈值 0.5。
+  ///
+  /// 刻意不走 `Theme.of(context).brightness` —— 主题定制色板下两者会不一致
+  /// (用户能把「明亮」调成深底),而派生色、品牌图标提亮档、SQL 高亮配色
+  /// 都必须跟着实际看到的那块底色走。
+  ///
+  /// 这条判据原先散在 9 处(`toDesktopTokens` 里一份取反、`about_dialog`
+  /// 一份、查询页 / 对象面板 / 六个设计器各一份),改阈值要满仓找。
+  bool get isDark => background.computeLuminance() < 0.5;
+
   /// 拷贝并覆盖指定字段,用于主题定制时逐项修改。
   AppPalette copyWith({
     Color? background,
@@ -273,7 +283,7 @@ class AppPalette {
   ///
   /// 只做颜色映射,**不含显示缩放** —— 渲染组件请用 [desktopTokensFor]。
   DesktopTokens toDesktopTokens() {
-    final light = background.computeLuminance() > 0.5;
+    final light = !isDark;
 
     // ── 按钮(对齐 Windows 桌面按钮)────────────────────────────────────
     // 尺寸(24 高 / 最小 73 宽)由 base-ui 的 winForm 预设给(VCL/WinForms

lib/theme/sql_highlight.dart

@@ -114,9 +114,8 @@ TextSpan? _lastSpan;
 /// 把一段 SQL / DDL 解析成带高亮的 [TextSpan],供 `Text.rich` /
 /// `SelectableText.rich` 直接渲染。
 ///
-/// 字体与明暗都从 [palette] 推导:明暗口径沿用全应用既有的「按 background 亮度」
-/// 判法,不走 `Theme.of` —— 定制色板下两者可能不一致。字号 / 行高各展示位不同,
-/// 故仍留参数。
+/// 字体与明暗都从 [palette] 推导:明暗取 [AppPalette.isDark],不走 `Theme.of`
+/// —— 定制色板下两者可能不一致。字号 / 行高各展示位不同,故仍留参数。
 ///
 /// 返回的是**根 span**,兜底字体([sqlCodeStyle])挂在它身上,命中的 scope 子 span
 /// 只带自己的颜色与斜体、字号与字体沿用它——所以调用方直接 `Text.rich(span)` 即可,
@@ -128,7 +127,7 @@ TextSpan highlightedSqlSpan(
   double fontSize = 12,
   double? height = 1.45,
 }) {
-  final isDark = palette.background.computeLuminance() < 0.5;
+  final isDark = palette.isDark;
   final base = sqlCodeStyle(
     color: palette.foreground,
     fontSize: fontSize,

lib/widgets/about_dialog.dart

@@ -124,7 +124,7 @@ class DaroAboutDialog extends StatelessWidget {
   Widget _buildLinks(BuildContext context, DesktopTokens dt, AppPalette t) {
     // 品牌原色是按亮底挑的,暗色主题下对比度不够(GitHub 的黑几乎看不见),
     // 取每个平台备好的提亮档 —— 判据跟查询页 / 对象面板一致,跟主题色板走。
-    final dark = t.background.computeLuminance() < 0.5;
+    final dark = t.isDark;
     return Row(
       mainAxisAlignment: MainAxisAlignment.center,
       children: [

lib/widgets/matview_design_page.dart

@@ -1133,7 +1133,7 @@ class _MatViewDesignPageState extends State<MatViewDesignPage> {
     required CodeFindController findController,
     bool showLineNumbers = true,
   }) {
-    final isDark = t.background.computeLuminance() < 0.5;
+    final isDark = t.isDark;
     return CodeEditor(
       controller: controller,
       readOnly: readOnly,

lib/widgets/object_panel.dart

@@ -651,7 +651,7 @@ class _ObjectPanelState extends State<ObjectPanel> {
   /// 工具条走灰(见 [_buildToolbar] 里的 searchTokens),边框线仍把输入框勾勒
   /// 出来。hover / pressed 在该灰底上派生(暗色提亮、亮色加深),交互反馈不变。
   DesktopTokens _toolbarTokens(AppPalette t) {
-    final isDark = t.background.computeLuminance() < 0.5;
+    final isDark = t.isDark;
     final hoverBlend =
         isDark ? Colors.white.withValues(alpha: 0.08) : Colors.black.withValues(alpha: 0.08);
     final pressedBlend =

lib/widgets/query_page.dart

@@ -1279,7 +1279,7 @@ class _QueryPageState extends State<QueryPage> {
 
   // SQL 编辑区:re_editor 自绘编辑器(语法高亮 + 行号 + schema 感知补全)
   Widget _editor(AppPalette t) {
-    final isDark = t.background.computeLuminance() < 0.5;
+    final isDark = t.isDark;
     return CodeAutocomplete(
       viewBuilder: (context, notifier, onSelected) => _SqlPromptPanel(
         notifier: notifier,

lib/widgets/routine_design_page.dart

@@ -799,7 +799,7 @@ class _RoutineDesignPageState extends State<RoutineDesignPage> {
     CodeFindBuilder? findBuilder,
     bool readOnly = false,
   }) {
-    final isDark = t.background.computeLuminance() < 0.5;
+    final isDark = t.isDark;
     return CodeEditor(
       controller: controller,
       focusNode: readOnly ? null : _focusNode,

lib/widgets/table_designer_page.dart

@@ -2474,7 +2474,7 @@ class _TableDesignerPageState extends State<TableDesignerPage> {
   Widget _sqlTab(AppPalette t) {
     final sql = _previewSql();
     if (_sqlCtrl.text != sql) _sqlCtrl.text = sql;
-    final isDark = t.background.computeLuminance() < 0.5;
+    final isDark = t.isDark;
     return Column(
       crossAxisAlignment: CrossAxisAlignment.stretch,
       children: [

lib/widgets/user_design_page.dart

@@ -1029,7 +1029,7 @@ class _UserDesignPageState extends State<UserDesignPage> {
     _pullFromControllers();
     final text = UserSql.buildScriptText(_typeId, _spec);
     if (_previewCtrl.text != text) _previewCtrl.text = text;
-    final isDark = t.background.computeLuminance() < 0.5;
+    final isDark = t.isDark;
     return CodeEditor(
       controller: _previewCtrl,
       readOnly: true,

lib/widgets/view_design_page.dart

@@ -1245,7 +1245,7 @@ class _ViewDesignPageState extends State<ViewDesignPage> {
     bool showLineNumbers = true,
     CodeFindController? findController,
   }) {
-    final isDark = t.background.computeLuminance() < 0.5;
+    final isDark = t.isDark;
     return CodeEditor(
       controller: controller,
       focusNode: readOnly ? null : _focusNode,

test/theme_palette_test.dart

@@ -159,4 +159,35 @@ void main() {
       expect(AppPalette.fromJson(AppTheme.dark.toJson()), AppTheme.dark);
     });
   });
+
+  group('明 / 暗判定(AppPalette.isDark)', () {
+    test('内置两套色板各归一边', () {
+      expect(AppTheme.light.isDark, isFalse);
+      expect(AppTheme.dark.isDark, isTrue);
+    });
+
+    test('判据跟底色走,不跟 ThemeMode 走', () {
+      // 主题定制允许把「明亮」调成深底(反之亦然)。派生色、品牌图标提亮档、
+      // SQL 高亮配色都得跟着实际看到的那块底色走 —— 走 Theme.of(brightness)
+      // 的实现会在这一条上红。
+      final deep =
+          AppTheme.light.copyWith(background: const Color(0xFF1E1E1E));
+      expect(deep.isDark, isTrue);
+      final pale =
+          AppTheme.dark.copyWith(background: const Color(0xFFFAFAFA));
+      expect(pale.isDark, isFalse);
+    });
+
+    test('toDesktopTokens 的按钮面色与 isDark 同向', () {
+      // 桥接里那句 light = !isDark 必须与判定同源:分两处算,就会出现
+      // 「色板判成暗、按钮却按亮底配面色」的错位。
+      expect(AppTheme.light.toDesktopTokens().buttonFaceColor,
+          AppTheme.light.background);
+      expect(AppTheme.dark.toDesktopTokens().buttonFaceColor,
+          isNot(AppTheme.dark.background));
+      final deep =
+          AppTheme.light.copyWith(background: const Color(0xFF1E1E1E));
+      expect(deep.toDesktopTokens().buttonFaceColor, isNot(deep.background));
+    });
+  });
 }