颜色,基础组件重新封装,降低理解难度,分层更明显。入口更抽象

This commit is contained in:
Cody
2026-03-10 09:38:07 +08:00
parent ea3192bd65
commit ed93d556d6
13 changed files with 590 additions and 537 deletions

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@@ -3,18 +3,20 @@ import 'package:flutter/material.dart';
import 'package:im_app/core/ui/base/colors.dart';
import 'package:im_app/core/ui/base/font.dart';
/// 主题组装 -- 将 AppColors / AppFont 组装为 ThemeData
/// 主题组装 将 AppColors / AppFont 组装为 ThemeData
///
/// 同时提供 Light / Dark 双主题,按钮形状/颜色/字体统一在此定义,
/// AppButton 只负责变体切换和 loading 逻辑,不硬编码颜色和字体。
/// 接收 [AppColors] 语义颜色实例,零 isDark 分支。
/// 亮暗色差异完全由 [LightColors] / [DarkColors] 实现决定,
/// 本类只做「语义 → ThemeData 属性」的映射。
///
/// ## 数据流位置
///
/// ```
/// AppColors + AppFont (L1 常量)
/// → ★ AppTheme ★ (L1 组装) ← 你在这里
/// → MaterialApp(theme: AppTheme.theme, darkTheme: AppTheme.darkTheme)
/// → Theme.of(context) → 所有 Widget 自动响应主题变化
/// ColorBases颜色常量→ AppColors语义接口
/// → LightColors / DarkColors实现
/// → ★ AppTheme._build(AppColors c) ★ ← 你在这里
/// → MaterialApp(theme: AppTheme.theme, darkTheme: AppTheme.darkTheme)
/// → Theme.of(context) → 所有 Widget 自动响应主题变化
/// ```
///
/// ## 使用
@@ -22,7 +24,7 @@ import 'package:im_app/core/ui/base/font.dart';
/// ```dart
/// // app/app.dart
/// MaterialApp(
/// theme: AppTheme.theme, // getter 名与 MaterialApp 参数名一一对应
/// theme: AppTheme.theme,
/// darkTheme: AppTheme.darkTheme,
/// )
/// ```
@@ -30,62 +32,128 @@ class AppTheme {
AppTheme._();
/// 亮色主题 — 对应 MaterialApp `theme:` 参数
static ThemeData get theme => _build(Brightness.light);
static ThemeData get theme => _build(const LightColors());
/// 暗色主题 — 对应 MaterialApp `darkTheme:` 参数
static ThemeData get darkTheme => _build(Brightness.dark);
static ThemeData get darkTheme => _build(const DarkColors());
static ThemeData _build(Brightness brightness) {
final isDark = brightness == Brightness.dark;
final primary = isDark ? AppColors.primaryLight : AppColors.primary;
static ThemeData _build(AppColors c) {
final brightness = c is DarkColors ? Brightness.dark : Brightness.light;
return ThemeData(
useMaterial3: true,
brightness: brightness,
// ── ColorScheme ────────────────────────────────────────────────────
colorScheme: ColorScheme(
brightness: brightness,
primary: primary,
onPrimary: AppColors.white,
secondary: primary,
onSecondary: AppColors.white,
error: AppColors.error,
onError: AppColors.white,
surface: isDark ? AppColors.gray800 : AppColors.white,
onSurface: isDark ? AppColors.white : AppColors.gray900,
primary: c.brandPrimary,
onPrimary: c.textOnPrimary,
secondary: c.brandPrimary,
onSecondary: c.textOnPrimary,
error: c.statusError,
onError: c.textOnPrimary,
surface: c.bgSecondary,
onSurface: c.textPrimary,
),
scaffoldBackgroundColor: isDark ? AppColors.gray900 : AppColors.gray50,
scaffoldBackgroundColor: c.bgPrimary,
// 字体
// ── Typography ─────────────────────────────────────────────────────
textTheme: AppFont.textTheme(brightness),
// ElevatedButton → AppButton.primary
// ── AppBar ─────────────────────────────────────────────────────────
appBarTheme: AppBarTheme(
backgroundColor: c.bgPrimary,
foregroundColor: c.textPrimary,
elevation: 0,
centerTitle: true,
),
// ── ElevatedButton → AppButton.primary ─────────────────────────────
elevatedButtonTheme: ElevatedButtonThemeData(
style: ElevatedButton.styleFrom(
backgroundColor: AppColors.primary,
foregroundColor: AppColors.white,
disabledBackgroundColor: AppColors.gray400,
backgroundColor: c.brandPrimary,
foregroundColor: c.textOnPrimary,
disabledBackgroundColor: c.borderDefault,
disabledForegroundColor: c.textDisabled,
minimumSize: const Size.fromHeight(48),
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(8),
),
),
),
// OutlinedButton → AppButton.secondary
// ── OutlinedButton → AppButton.secondary ──────────────────────────
outlinedButtonTheme: OutlinedButtonThemeData(
style: OutlinedButton.styleFrom(
foregroundColor: primary,
side: BorderSide(color: primary),
foregroundColor: c.brandPrimary,
side: BorderSide(color: c.brandPrimary),
minimumSize: const Size.fromHeight(48),
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(8),
),
),
),
// TextButton → AppButton.text
// ── TextButton → AppButton.text ────────────────────────────────────
textButtonTheme: TextButtonThemeData(
style: TextButton.styleFrom(
foregroundColor: primary,
foregroundColor: c.brandPrimary,
minimumSize: const Size.fromHeight(48),
),
),
// ── InputDecoration ────────────────────────────────────────────────
inputDecorationTheme: InputDecorationTheme(
fillColor: c.bgSecondary,
filled: true,
contentPadding: const EdgeInsets.symmetric(
horizontal: 16,
vertical: 14,
),
border: OutlineInputBorder(
borderSide: BorderSide(color: c.borderDefault),
borderRadius: BorderRadius.circular(8),
),
enabledBorder: OutlineInputBorder(
borderSide: BorderSide(color: c.borderDefault),
borderRadius: BorderRadius.circular(8),
),
focusedBorder: OutlineInputBorder(
borderSide: BorderSide(color: c.borderFocused, width: 2),
borderRadius: BorderRadius.circular(8),
),
errorBorder: OutlineInputBorder(
borderSide: BorderSide(color: c.statusError),
borderRadius: BorderRadius.circular(8),
),
hintStyle: TextStyle(color: c.textDisabled),
),
// ── Card ───────────────────────────────────────────────────────────
cardTheme: CardThemeData(
color: c.bgSecondary,
elevation: 0,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(12),
side: BorderSide(color: c.borderDefault),
),
),
// ── Divider ────────────────────────────────────────────────────────
dividerTheme: DividerThemeData(
color: c.divider,
thickness: 1,
),
// ── BottomNavigationBar ────────────────────────────────────────────
bottomNavigationBarTheme: BottomNavigationBarThemeData(
backgroundColor: c.navBarBg,
selectedItemColor: c.navBarSelected,
unselectedItemColor: c.textDisabled,
showUnselectedLabels: true,
type: BottomNavigationBarType.fixed,
),
);
}
}

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@@ -1,7 +0,0 @@
import 'package:flutter/material.dart';
import 'package:im_app/core/ui/base/shadows.dart';
extension AppThemeExt on BuildContext {
AppShadows get shadows => AppShadows(this);
}

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@@ -1,44 +1,158 @@
import 'package:flutter/material.dart';
/// 颜色体系 — 与 Figma 设计稿对应
///
/// L1 基础常量 -- 不含任何 Widget只输出颜色常量。
/// View 层不直接引用 AppColors通过 Theme.of(context) 访问语义色;
/// 有特殊硬编码需求(插图、固定品牌色)时可直接引用。
///
/// ## 数据流位置
///
/// ```
/// AppColors颜色常量← 你在这里
/// → AppTheme组装为 ThemeData
/// → MaterialApp注入
/// → Theme.of(context)View 层消费)
/// ```
class AppColors {
AppColors._();
// =============================================================================
// LAYER 1: ColorBases — 颜色常量,不带语义
// =============================================================================
//
// 色值与 Figma 设计稿一一对应。命名用 {色相}{明度} 格式(如 primary500
// 不暗示任何使用场景。
//
// View 层不直接引用 ColorBases通过 AppColors语义接口间接使用。
// ── Brand Primary ──────────────────────────────────────────────────────────
static const primary = Color(0xFF2F80ED);
static const primaryDark = Color(0xFF1A6BD4);
static const primaryLight = Color(0xFF5BA3F5);
abstract class ColorBases {
ColorBases._();
// ── Semantic ───────────────────────────────────────────────────────────────
static const success = Color(0xFF27AE60);
static const warning = Color(0xFFF2C94C);
static const error = Color(0xFFEB5757);
// ── Brand ────────────────────────────────────────────────────────────────
static const primary400 = Color(0xFF5BA3F5);
static const primary500 = Color(0xFF2F80ED);
static const primary700 = Color(0xFF1A6BD4);
// ── Neutral Gray Scale ─────────────────────────────────────────────────────
static const white = Color(0xFFFFFFFF);
static const gray50 = Color(0xFFF8F9FA);
static const gray100 = Color(0xFFF1F3F4);
static const gray200 = Color(0xFFE8EAED);
static const gray400 = Color(0xFFBDC1C6);
static const gray600 = Color(0xFF80868B);
static const gray800 = Color(0xFF3C4043);
static const gray900 = Color(0xFF202124);
static const black = Color(0xFF000000);
// ── Neutral ──────────────────────────────────────────────────────────────
static const neutral0 = Color(0xFFFFFFFF);
static const neutral50 = Color(0xFFF8F9FA);
static const neutral100 = Color(0xFFF1F3F4);
static const neutral200 = Color(0xFFE8EAED);
static const neutral400 = Color(0xFFBDC1C6);
static const neutral600 = Color(0xFF80868B);
static const neutral800 = Color(0xFF3C4043);
static const neutral850 = Color(0xFF2C2C2E);
static const neutral900 = Color(0xFF202124);
static const neutral950 = Color(0xFF000000);
// ── Neutral black Scale ─────────────────────────────────────────────────────
static const black12 = Color(0x1F000000); // 12% opacity
static const black60 = Color(0x99000000); // 60% opacity
// ── Neutral Alpha带透明度阴影等场景──────────────────────────────────
static const black12 = Color(0x1F000000);
static const black60 = Color(0x99000000);
// ── Status ───────────────────────────────────────────────────────────────
static const error500 = Color(0xFFEB5757);
static const success500 = Color(0xFF27AE60);
static const warning500 = Color(0xFFF2C94C);
}
// =============================================================================
// LAYER 2: AppColors — 语义颜色抽象接口
// =============================================================================
//
// 按用途命名bgPrimary、textSecondary不关心具体色值。
// LightColors / DarkColors 各自实现AppTheme._build() 消费此接口。
// Widget 侧通过 context.colors 访问(见 context_theme_ext.dart
//
// ## 数据流
//
// ```
// ColorBases颜色常量
// → AppColors语义接口← 你在这里
// → LightColors / DarkColors实现
// → AppTheme._build(AppColors c)(组装 ThemeData
// → context.colorsWidget 消费)
// ```
abstract class AppColors {
// ── Background ───────────────────────────────────────────────────────────
Color get bgPrimary;
Color get bgSecondary;
Color get bgTertiary;
// ── Text ─────────────────────────────────────────────────────────────────
Color get textPrimary;
Color get textSecondary;
Color get textDisabled;
Color get textOnPrimary;
// ── Border ───────────────────────────────────────────────────────────────
Color get borderDefault;
Color get borderFocused;
// ── Brand ────────────────────────────────────────────────────────────────
Color get brandPrimary;
Color get brandPrimaryHover;
// ── Status ───────────────────────────────────────────────────────────────
Color get statusError;
Color get statusSuccess;
Color get statusWarning;
// ── Component ────────────────────────────────────────────────────────────
Color get navBarBg;
Color get navBarSelected;
Color get divider;
// ── Effect ───────────────────────────────────────────────────────────────
Color get shadow;
}
// =============================================================================
// LAYER 3a: LightColors — 亮色实现
// =============================================================================
class LightColors implements AppColors {
const LightColors();
@override Color get bgPrimary => ColorBases.neutral50;
@override Color get bgSecondary => ColorBases.neutral0;
@override Color get bgTertiary => ColorBases.neutral100;
@override Color get textPrimary => ColorBases.neutral900;
@override Color get textSecondary => ColorBases.neutral600;
@override Color get textDisabled => ColorBases.neutral400;
@override Color get textOnPrimary => ColorBases.neutral0;
@override Color get borderDefault => ColorBases.neutral200;
@override Color get borderFocused => ColorBases.primary500;
@override Color get brandPrimary => ColorBases.primary500;
@override Color get brandPrimaryHover => ColorBases.primary700;
@override Color get statusError => ColorBases.error500;
@override Color get statusSuccess => ColorBases.success500;
@override Color get statusWarning => ColorBases.warning500;
@override Color get navBarBg => ColorBases.neutral0;
@override Color get navBarSelected => ColorBases.primary500;
@override Color get divider => ColorBases.neutral100;
@override Color get shadow => ColorBases.black12;
}
// =============================================================================
// LAYER 3b: DarkColors — 暗色实现
// =============================================================================
class DarkColors implements AppColors {
const DarkColors();
@override Color get bgPrimary => ColorBases.neutral900;
@override Color get bgSecondary => ColorBases.neutral800;
@override Color get bgTertiary => ColorBases.neutral850;
@override Color get textPrimary => ColorBases.neutral0;
@override Color get textSecondary => ColorBases.neutral400;
@override Color get textDisabled => ColorBases.neutral600;
@override Color get textOnPrimary => ColorBases.neutral0;
@override Color get borderDefault => ColorBases.neutral800;
@override Color get borderFocused => ColorBases.primary400;
@override Color get brandPrimary => ColorBases.primary400;
@override Color get brandPrimaryHover => ColorBases.primary500;
@override Color get statusError => ColorBases.error500;
@override Color get statusSuccess => ColorBases.success500;
@override Color get statusWarning => ColorBases.warning500;
@override Color get navBarBg => ColorBases.neutral900;
@override Color get navBarSelected => ColorBases.primary400;
@override Color get divider => ColorBases.neutral800;
@override Color get shadow => ColorBases.black60;
}

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@@ -1,27 +1,40 @@
import 'package:flutter/material.dart';
import 'package:im_app/core/ui/base/colors.dart';
import 'package:im_app/core/ui/base/font.dart';
import 'package:im_app/core/ui/base/shadows.dart';
/// 主题样式快捷封装
/// 主题样式快捷封装 — 字体 + 预组合样式
///
/// `context.styles` 返回此对象build 方法里一行获取所有样式,
/// 之后直接用 `s.bodySmall`、`s.primary`,不再写 Theme.of(context)。
/// `context.styles` 返回此对象build 方法里一行获取字体样式,
/// 之后直接用 `s.bodySmall`、`s.sectionLabel`,不再写 Theme.of(context)。
///
/// 颜色访问走 `context.colors`(见下方 [AppColorsX] 扩展),
/// 本类只负责字体和「字体+颜色」的预组合。
///
/// ```dart
/// final s = context.styles;
/// final c = context.colors;
///
/// Text('标题', style: s.titleMedium)
/// Text('描述', style: s.bodySmall)
/// Icon(Icons.home, color: s.primary)
/// Text('改色', style: s.bodySmall?.copyWith(color: s.primary))
/// Text('分组', style: s.sectionLabel) // 预组合:字体 + 品牌色
/// Icon(Icons.home, color: c.brandPrimary)
/// ```
class AppStyles {
AppStyles(BuildContext context)
: _t = Theme.of(context).textTheme,
_c = Theme.of(context).colorScheme;
_colors = Theme.of(context).brightness == Brightness.dark
? const DarkColors()
: const LightColors();
final TextTheme _t;
final ColorScheme _c;
final AppColors _colors;
// ── 亮暗判断 ──────────────────────────────────────────────────────────────
bool get isDark => _colors is DarkColors;
Brightness get brightness => isDark ? Brightness.dark : Brightness.light;
// ── 字体 ──────────────────────────────────────────────────────────────────
@@ -45,45 +58,58 @@ class AppStyles {
TextStyle? get labelMedium => _t.labelMedium;
TextStyle? get labelSmall => _t.labelSmall;
// ── 颜色 + 亮暗 ───────────────────────────────────────────────────────────
Brightness get brightness => _c.brightness;
bool get isDark => _c.brightness == Brightness.dark;
Color get primary => _c.primary;
Color get onPrimary => _c.onPrimary;
Color get secondary => _c.secondary;
Color get onSecondary => _c.onSecondary;
Color get error => _c.error;
Color get onError => _c.onError;
Color get surface => _c.surface;
Color get onSurface => _c.onSurface;
Color get outline => _c.outline;
Color get outlineVariant => _c.outlineVariant;
// ── 预组合样式(字体 + 颜色,开箱即用)──────────────────────────────────────
//
// 与 AppButton 变体理念一致:按语义选用,无需手动拼 TextStyle 或 copyWith。
// 新增场景时在此扩展,保持全局一致。
/// 分组标题 — 列表 Section、设置分组等sectionLabel 字体 + primary 色)
TextStyle get sectionLabel => AppFont.sectionLabel.copyWith(color: primary);
/// 分组标题 — 列表 Section、设置分组等sectionLabel 字体 + 品牌色)
TextStyle get sectionLabel =>
AppFont.sectionLabel.copyWith(color: _colors.brandPrimary);
/// 辅助文字 — 元数据、次要信息、时间戳等labelMedium + outline 色)
TextStyle? get labelMuted => labelMedium?.copyWith(color: outline);
/// 辅助文字 — 元数据、次要信息、时间戳等labelMedium + 次要文字色)
TextStyle? get labelMuted =>
labelMedium?.copyWith(color: _colors.textSecondary);
/// 正文次要 — 描述、提示等bodySmall + outline 色)
TextStyle? get bodyMuted => bodySmall?.copyWith(color: outline);
/// 正文次要 — 描述、提示等bodySmall + 次要文字色)
TextStyle? get bodyMuted =>
bodySmall?.copyWith(color: _colors.textSecondary);
/// 错误提示 — 表单错误、警告等bodySmall + error 色)
TextStyle? get bodyError => bodySmall?.copyWith(color: error);
/// 错误提示 — 表单错误、警告等bodySmall + 错误色)
TextStyle? get bodyError =>
bodySmall?.copyWith(color: _colors.statusError);
}
/// BuildContext 主题入口
/// 语义颜色入口 — 按亮暗模式返回对应的 [AppColors] 实例
///
/// ```dart
/// final c = context.colors;
/// Container(color: c.bgSecondary)
/// Text('hello', style: TextStyle(color: c.textPrimary))
/// ```
extension AppColorsX on BuildContext {
AppColors get colors => Theme.of(this).brightness == Brightness.dark
? const DarkColors()
: const LightColors();
}
/// 字体样式入口
///
/// ```dart
/// final s = context.styles;
/// Text('标题', style: s.headlineMedium)
/// ```
extension AppThemeX on BuildContext {
AppStyles get styles => AppStyles(this);
}
/// 阴影入口
///
/// ```dart
/// Container(
/// decoration: BoxDecoration(boxShadow: context.shadows.bs8),
/// )
/// ```
extension AppShadowsX on BuildContext {
AppShadows get shadows => AppShadows(this);
}

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@@ -1,131 +1,57 @@
import 'package:flutter/widgets.dart';
/// 圆角设计 Token
/// 圆角常量 — 统一管理项目中的圆角规范
///
/// 统一管理项目中的圆角规范,避免在业务代码中直接写
/// `Radius.circular()` 或 `BorderRadius.circular()`
///
/// 使用方式:
/// 避免在业务代码中直接写 `BorderRadius.circular()`。
///
/// ```dart
/// Container(
/// decoration: BoxDecoration(
/// borderRadius: AppRadius.card,
/// ),
/// )
/// Container(decoration: BoxDecoration(borderRadius: AppRadius.card))
/// ```
///
/// 设计规范来源:
/// 通常来自 UI 设计系统,例如
/// 4 / 8 / 12 / 16 / 20
/// 基础档位4 / 6 / 8 / 10 / 12 / 14 / 16 / 18 / 20
class AppRadius {
/// 私有构造函数,防止被实例化
AppRadius._();
// ================================
// 基础 Radius Token
// ================================
// 用于组合 BorderRadius
// ── 基础 Radius ────────────────────────────────────────────────────────
/// 4px 圆角
static const Radius r4 = Radius.circular(4);
/// 6px 圆角
static const Radius r6 = Radius.circular(6);
/// 8px 圆角(常用于按钮)
static const Radius r8 = Radius.circular(8);
/// 10px 圆角
static const Radius r10 = Radius.circular(10);
/// 12px 圆角(常用于卡片)
static const Radius r12 = Radius.circular(12);
/// 14px 圆角
static const Radius r14 = Radius.circular(14);
/// 16px 圆角(常用于弹窗)
static const Radius r16 = Radius.circular(16);
/// 18px 圆角
static const Radius r18 = Radius.circular(18);
/// 20px 圆角
static const Radius r20 = Radius.circular(20);
// ================================
// 组件级设计 Token
// ================================
// 推荐优先使用这些,而不是直接使用 brXX
// ── 组件级圆角(优先使用)─────────────────────────────────────────────
/// 卡片圆角
///
/// 示例Card / 商品卡片 / 信息卡片
/// 卡片 — Card / 商品卡片 / 信息卡片
static const BorderRadius card = BorderRadius.all(r12);
/// 按钮圆角
///
/// 示例PrimaryButton / SecondaryButton
/// 按钮 — PrimaryButton / SecondaryButton
static const BorderRadius button = BorderRadius.all(r8);
/// 弹窗圆角
///
/// 示例Dialog / Modal
/// 弹窗 — Dialog / Modal
static const BorderRadius dialog = BorderRadius.all(r16);
// ================================
// 通用 BorderRadius
// ================================
// 当组件 Token 不满足需求时使用
// ── 通用 BorderRadius组件级圆角不满足时使用──────────────────────────
static const BorderRadius br4 = BorderRadius.all(r4);
static const BorderRadius br6 = BorderRadius.all(r6);
static const BorderRadius br8 = BorderRadius.all(r8);
static const BorderRadius br10 = BorderRadius.all(r10);
static const BorderRadius br12 = BorderRadius.all(r12);
static const BorderRadius br14 = BorderRadius.all(r14);
static const BorderRadius br16 = BorderRadius.all(r16);
static const BorderRadius br18 = BorderRadius.all(r18);
static const BorderRadius br20 = BorderRadius.all(r20);
// ================================
// 辅助方法
// ================================
// 用于生成顶部或底部圆角
// ── 方向性圆角 ──────────────────────────────────────────────────────────
/// 生成顶部圆角
///
/// 常用于:
/// - BottomSheet
/// - 底部弹窗
/// - 半屏弹层
///
/// 示例:
/// ```dart
/// borderRadius: AppRadius.top(AppRadius.r16)
/// ```
static BorderRadius top(Radius r) =>
BorderRadius.vertical(top: r);
/// 顶部圆角 — BottomSheet、底部弹窗
static BorderRadius top(Radius r) => BorderRadius.vertical(top: r);
/// 生成底部圆角
///
/// 常用于:
/// - Header
/// - 顶部卡片
///
/// 示例:
/// ```dart
/// borderRadius: AppRadius.bottom(AppRadius.r16)
/// ```
static BorderRadius bottom(Radius r) =>
BorderRadius.vertical(bottom: r);
}
/// 底部圆角 — Header、顶部卡片
static BorderRadius bottom(Radius r) => BorderRadius.vertical(bottom: r);
}

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@@ -1,129 +1,59 @@
import 'package:flutter/material.dart';
import 'colors.dart';
/// 阴影 Design Token
import 'package:im_app/core/ui/base/colors.dart';
/// 阴影常量 — 统一管理项目中的阴影规范
///
/// 统一管理项目中的阴影规范,避免在业务代码中直接书写 `BoxShadow`。
/// 所有阴影通过 Design Token 提供,保证:
/// 阴影颜色通过 [AppColors.shadow] 自动适配亮暗模式,
/// 无需手动判断 Brightness。
///
/// - UI 风格统一
/// - 支持 Dark / Light Mode
/// - 与设计稿Figma保持一致
///
/// ## 数据流位置
/// ## 数据流
///
/// ```
/// AppColors颜色常量
/// → AppShadows阴影 Token
/// → Context Extensioncontext.shadows
/// → View 层消费
/// ```
///
/// ## 使用示例
///
/// ```dart
/// Container(
/// decoration: BoxDecoration(
/// color: Colors.white,
/// boxShadow: context.shadows.bs8,
/// ),
/// )
/// ColorBases颜色常量→ AppColors.shadow语义色
/// → AppShadows阴影常量
/// → context.shadowsView 层消费
/// ```
///
/// ## Elevation 体系
///
/// 阴影遵循常见 UI 设计系统的层级规范:
///
/// - **4** : 小卡片 / List Item
/// - **8** : Card / 商品卡片
/// - **12** : Dropdown / Popover
/// - **16** : Dialog / Modal / 悬浮面板
///
/// ## 使用
///
/// ```dart
/// Container(
/// decoration: BoxDecoration(
/// color: context.colors.bgSecondary,
/// boxShadow: context.shadows.bs8,
/// ),
/// )
/// ```
class AppShadows {
/// 构造函数,通过 BuildContext 获取当前主题
AppShadows(this.context);
AppShadows(BuildContext context)
: _color = (Theme.of(context).brightness == Brightness.dark
? const DarkColors()
: const LightColors())
.shadow;
/// 当前 Widget 的 BuildContext
///
/// 用于根据 Theme 判断 Light / Dark Mode
/// 从而动态获取阴影颜色。
final BuildContext context;
final Color _color;
/// 内部统一阴影生成方法
///
/// 避免重复创建 `BoxShadow` 逻辑,
/// 所有阴影 Token 都通过该方法生成。
List<BoxShadow> _shadow({
required double blur,
required double dy,
}) {
return [
BoxShadow(
List<BoxShadow> _shadow({required double blur, required double dy}) => [
BoxShadow(color: _color, blurRadius: blur, offset: Offset(0, dy)),
];
/// 阴影颜色来自 Design Token
color: _shadowColor,
/// Elevation 4 — 小卡片 / List Item
List<BoxShadow> get bs4 => _shadow(blur: 4, dy: 2);
/// 模糊半径(影响阴影扩散范围)
blurRadius: blur,
/// Elevation 8 — Card / 商品卡片
List<BoxShadow> get bs8 => _shadow(blur: 8, dy: 4);
/// 阴影偏移
offset: Offset(0, dy),
)
];
}
/// Elevation 12 — Dropdown / Popover
List<BoxShadow> get bs12 => _shadow(blur: 12, dy: 8);
/// Elevation 4
///
/// 适用场景:
/// - List Item
/// - 小卡片
List<BoxShadow> get bs4 =>
_shadow(
blur: 4,
dy: 2,
);
/// Elevation 8
///
/// 适用场景:
/// - Card
/// - 商品卡片
List<BoxShadow> get bs8 =>
_shadow(
blur: 8,
dy: 4,
);
/// Elevation 12
///
/// 适用场景:
/// - Dropdown
/// - Popover
List<BoxShadow> get bs12 =>
_shadow(
blur: 12,
dy: 8,
);
/// Elevation 16
///
/// 适用场景:
/// - Dialog
/// - Modal
/// - Floating Panel
List<BoxShadow> get bs16 =>
_shadow(
blur: 16,
dy: 8,
);
/// 阴影颜色 Token
Color get _shadowColor {
final brightness = Theme
.of(context)
.brightness;
return brightness == Brightness.dark
? AppColors.black60
: AppColors.black12;
}
}
/// Elevation 16 — Dialog / Modal / 悬浮面板
List<BoxShadow> get bs16 => _shadow(blur: 16, dy: 8);
}

View File

@@ -1,72 +1,32 @@
/// 间距设计 Token
/// 间距常量 — 统一管理项目中的间距规范
///
/// 统一管理项目中的间距规范,避免在业务代码中直接写 magic number,例如:
/// 避免在业务代码中直接写 magic number
///
/// ❌ 不推荐
/// ```dart
/// Padding(padding: EdgeInsets.all(16))
/// ```
///
/// ✅ 推荐
/// ```dart
/// // 用常量,不写裸数字
/// Padding(padding: EdgeInsets.all(AppSpacing.s16))
/// SizedBox(height: AppSpacing.s8)
/// ```
///
/// 常用于:
/// - Padding
/// - Margin
/// - SizedBox
/// - Sliver 间距
///
/// 设计规范通常来源于 UI 设计系统,例如:
/// 4 / 8 / 12 / 16 / 24 / 32
/// 基础档位4 / 8 / 12 / 16 / 24 / 32
class AppSpacing {
/// 私有构造函数,防止实例化
AppSpacing._();
// ================================
// 基础间距 Token
// ================================
/// 4px 间距(最小间距)
///
/// 常用于:
/// - icon 与文字之间
/// - 紧凑布局
/// 4px — icon 与文字之间、紧凑布局
static const double s4 = 4;
/// 8px 间距(小间距)
///
/// 常用于:
/// - 列表 item 内间距
/// - 小组件之间
/// 8px — 列表 item 内间距、小组件之间
static const double s8 = 8;
/// 12px 间距(中小间距)
///
/// 常用于:
/// - 表单组件
/// - 信息块之间
/// 12px — 表单组件、信息块之间
static const double s12 = 12;
/// 16px 间距(标准间距)
///
/// 常用于:
/// - 页面 Padding
/// - Card 内边距
/// 16px — 页面 Padding、Card 内边距
static const double s16 = 16;
/// 24px 间距(大间距)
///
/// 常用于:
/// - 模块之间
/// - Section 分隔
/// 24px — 模块之间、Section 分隔
static const double s24 = 24;
/// 32px 间距(超大间距)
///
/// 常用于:
/// - 页面大区块
/// - 顶部/底部留白
/// 32px — 页面大区块、顶部/底部留白
static const double s32 = 32;
}
}

View File

@@ -116,10 +116,10 @@ class AppButton extends StatelessWidget {
}
Widget _buildInverse(BuildContext context, Widget label) {
final s = context.styles;
final c = context.colors;
final style = FilledButton.styleFrom(
backgroundColor: s.onSurface,
foregroundColor: s.surface,
backgroundColor: c.textPrimary,
foregroundColor: c.bgSecondary,
);
if (icon != null) {
return FilledButton.icon(