wangjia
284 lines
12 KiB
Dart
284 lines
12 KiB
Dart
// pangolin_theme.dart
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// 穿山甲 · Pangolin — Flutter theme implementation
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//
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// Token 数值层（颜色/间距/圆角/动效/阴影）由 codegen 自动维护，见 pangolin_tokens.gen.dart。
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// 本文件只保留 Flutter 实现层：
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// · PangolinScheme — ThemeExtension（语义色映射 + light/dark 实例）
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// · PangolinContext — BuildContext 扩展
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// · PangolinFonts — 字族标签常量
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// · PangolinText — 本地打包字型（生产 useBundled，离线；测试经 FontLoader）
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// · PangolinTheme — ThemeData 组装
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//
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// Usage:
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// MaterialApp(
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// theme: PangolinTheme.light,
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// darkTheme: PangolinTheme.dark,
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// themeMode: ThemeMode.system,
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// );
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// // tokens: context.pangolin.accent, PangolinSpacing.x4, PangolinRadius.lg ...
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import 'package:flutter/material.dart';
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import 'package:google_fonts/google_fonts.dart';
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// token 数值层：import 供本文件使用，export 让调用方 import pangolin_theme.dart 时也能访问。
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import 'pangolin_tokens.gen.dart';
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export 'pangolin_tokens.gen.dart';
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/// ── Semantic tokens, resolved per brightness ───────────────────────
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@immutable
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class PangolinScheme extends ThemeExtension<PangolinScheme> {
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const PangolinScheme({
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required this.bg,
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required this.bgSubtle,
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required this.surface,
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required this.surface2,
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required this.overlay,
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required this.fg1,
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required this.fg2,
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required this.fg3,
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required this.fgOnAccent,
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required this.accent,
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required this.accentHover,
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required this.accentPress,
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required this.accentSubtle,
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required this.accentBorder,
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required this.border,
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required this.borderStrong,
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required this.ring,
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required this.success,
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required this.successSubtle,
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required this.warning,
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required this.warningSubtle,
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required this.danger,
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required this.dangerSubtle,
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});
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final Color bg, bgSubtle, surface, surface2, overlay;
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final Color fg1, fg2, fg3, fgOnAccent;
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final Color accent, accentHover, accentPress, accentSubtle, accentBorder;
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final Color border, borderStrong, ring;
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final Color success, successSubtle, warning, warningSubtle, danger, dangerSubtle;
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static const light = PangolinScheme(
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bg: PangolinColors.sand50,
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bgSubtle: PangolinColors.sand100,
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surface: PangolinColors.white,
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surface2: PangolinColors.sand50,
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overlay: Color(0x731F1C18),
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fg1: PangolinColors.sand900,
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fg2: PangolinColors.sand600,
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fg3: PangolinColors.sand500,
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fgOnAccent: PangolinColors.white,
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accent: PangolinColors.clay500,
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accentHover: PangolinColors.clay600,
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accentPress: PangolinColors.clay700,
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accentSubtle: PangolinColors.clay50,
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accentBorder: PangolinColors.clay200,
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border: PangolinColors.sand200,
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borderStrong: PangolinColors.sand300,
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ring: Color(0x59B96A3D),
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success: PangolinColors.green500,
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successSubtle: Color(0xFFE9F0E6),
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warning: PangolinColors.amber500,
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warningSubtle: Color(0xFFF8EED6),
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danger: PangolinColors.red500,
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dangerSubtle: Color(0xFFF6E1DA),
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);
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static const dark = PangolinScheme(
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bg: PangolinColors.sand950,
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bgSubtle: PangolinColors.sand900,
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surface: Color(0xFF221E19),
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surface2: Color(0xFF2A251F),
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overlay: Color(0x99000000),
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fg1: Color(0xFFF4EFE8),
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fg2: Color(0xFFB6AC9C),
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fg3: Color(0xFF897F6F),
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fgOnAccent: PangolinColors.sand900,
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accent: PangolinColors.clay400,
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accentHover: PangolinColors.clay300,
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accentPress: PangolinColors.clay500,
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accentSubtle: Color(0x24CC8B5C),
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accentBorder: Color(0x4DCC8B5C),
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border: Color(0x1AF2EEE7),
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borderStrong: Color(0x2EF2EEE7),
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ring: Color(0x73CC8B5C),
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success: PangolinColors.green400,
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successSubtle: Color(0x297FB07A),
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warning: PangolinColors.amber400,
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warningSubtle: Color(0x29E2B05A),
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danger: PangolinColors.red400,
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dangerSubtle: Color(0x29D4715A),
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);
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@override
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PangolinScheme copyWith({Color? bg, Color? fg1, Color? accent}) => PangolinScheme(
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bg: bg ?? this.bg, bgSubtle: bgSubtle, surface: surface, surface2: surface2,
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overlay: overlay, fg1: fg1 ?? this.fg1, fg2: fg2, fg3: fg3, fgOnAccent: fgOnAccent,
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accent: accent ?? this.accent, accentHover: accentHover, accentPress: accentPress,
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accentSubtle: accentSubtle, accentBorder: accentBorder, border: border,
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borderStrong: borderStrong, ring: ring, success: success, successSubtle: successSubtle,
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warning: warning, warningSubtle: warningSubtle, danger: danger, dangerSubtle: dangerSubtle,
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);
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@override
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PangolinScheme lerp(ThemeExtension<PangolinScheme>? other, double t) {
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if (other is! PangolinScheme) return this;
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Color c(Color a, Color b) => Color.lerp(a, b, t)!;
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return PangolinScheme(
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bg: c(bg, other.bg), bgSubtle: c(bgSubtle, other.bgSubtle), surface: c(surface, other.surface),
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surface2: c(surface2, other.surface2), overlay: c(overlay, other.overlay),
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fg1: c(fg1, other.fg1), fg2: c(fg2, other.fg2), fg3: c(fg3, other.fg3), fgOnAccent: c(fgOnAccent, other.fgOnAccent),
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accent: c(accent, other.accent), accentHover: c(accentHover, other.accentHover), accentPress: c(accentPress, other.accentPress),
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accentSubtle: c(accentSubtle, other.accentSubtle), accentBorder: c(accentBorder, other.accentBorder),
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border: c(border, other.border), borderStrong: c(borderStrong, other.borderStrong), ring: c(ring, other.ring),
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success: c(success, other.success), successSubtle: c(successSubtle, other.successSubtle),
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warning: c(warning, other.warning), warningSubtle: c(warningSubtle, other.warningSubtle),
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danger: c(danger, other.danger), dangerSubtle: c(dangerSubtle, other.dangerSubtle),
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);
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}
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}
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extension PangolinContext on BuildContext {
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PangolinScheme get pangolin => Theme.of(this).extension<PangolinScheme>()!;
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}
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/// ── Font families ───────────────────────────────────────────────────
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/// 生产用本地打包字体（[useBundled]=true，pubspec fonts: 段，离线）；保留的
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/// [useBundled]=false 分支走 google_fonts 运行时加载，仅作回退/对照。测试态由
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/// flutter_test_config 经 FontLoader 注册同名 family。封装函数是 PangolinText/
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/// _build 的唯一字体入口。
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class PangolinFonts {
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PangolinFonts._();
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static const display = 'Sora';
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static const sans = 'Manrope';
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static const cjk = 'Noto Sans SC';
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static const mono = 'JetBrains Mono';
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/// 生产默认 true：用本地打包 ttf（pubspec fonts: 段），离线可用，不走 google_fonts
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/// 运行时拉取。测试态由 flutter_test_config.dart 经 FontLoader 注册 test/fonts/。
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/// 中文经 [cjk]（Noto Sans SC 子集）走 fontFamilyFallback；子集外字符再兜系统 CJK 字体。
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static bool useBundled = true;
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static TextStyle sora({double? fontSize, FontWeight? fontWeight, double? height, double? letterSpacing}) =>
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useBundled
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? TextStyle(fontFamily: display, fontFamilyFallback: const [cjk], fontSize: fontSize, fontWeight: fontWeight, height: height, letterSpacing: letterSpacing)
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: GoogleFonts.sora(fontSize: fontSize, fontWeight: fontWeight, height: height, letterSpacing: letterSpacing);
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static TextStyle manrope(
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{double? fontSize, FontWeight? fontWeight, double? height, double? letterSpacing, List<FontFeature>? fontFeatures}) =>
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useBundled
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? TextStyle(
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fontFamily: sans,
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fontFamilyFallback: const [cjk],
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fontSize: fontSize,
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fontWeight: fontWeight,
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height: height,
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letterSpacing: letterSpacing,
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fontFeatures: fontFeatures)
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: GoogleFonts.manrope(
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fontSize: fontSize, fontWeight: fontWeight, height: height, letterSpacing: letterSpacing, fontFeatures: fontFeatures);
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static TextStyle jetBrainsMono({double? fontSize, FontWeight? fontWeight, List<FontFeature>? fontFeatures}) =>
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useBundled
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? TextStyle(fontFamily: mono, fontFamilyFallback: const [cjk], fontSize: fontSize, fontWeight: fontWeight, fontFeatures: fontFeatures)
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: GoogleFonts.jetBrainsMono(fontSize: fontSize, fontWeight: fontWeight, fontFeatures: fontFeatures);
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static TextTheme manropeTextTheme(TextTheme base) =>
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useBundled ? base.apply(fontFamily: sans, fontFamilyFallback: const [cjk]) : GoogleFonts.manropeTextTheme(base);
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}
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/// ── Type scale ──────────────────────────────────────────────────────
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/// Uses locally-bundled fonts via [PangolinFonts] (production `useBundled=true`,
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/// offline; tests register fonts via FontLoader). Members are static getters
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/// (not const) so they route through the [PangolinFonts] wrapper functions.
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class PangolinText {
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PangolinText._();
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static TextStyle get displayXl => PangolinFonts.sora(
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fontSize: 48, fontWeight: FontWeight.w700, height: 1.15, letterSpacing: -0.96);
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static TextStyle get display => PangolinFonts.sora(
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fontSize: 36, fontWeight: FontWeight.w700, height: 1.15, letterSpacing: -0.72);
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static TextStyle get h1 => PangolinFonts.sora(
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fontSize: 30, fontWeight: FontWeight.w600, height: 1.3, letterSpacing: -0.3);
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static TextStyle get h2 => PangolinFonts.sora(
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fontSize: 24, fontWeight: FontWeight.w600, height: 1.3, letterSpacing: -0.24);
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static TextStyle get h3 => PangolinFonts.manrope(
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fontSize: 20, fontWeight: FontWeight.w600, height: 1.3);
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static TextStyle get bodyLg => PangolinFonts.manrope(
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fontSize: 18, fontWeight: FontWeight.w400, height: 1.65);
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static TextStyle get body => PangolinFonts.manrope(
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fontSize: 16, fontWeight: FontWeight.w400, height: 1.5);
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static TextStyle get sm => PangolinFonts.manrope(
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fontSize: 14, fontWeight: FontWeight.w400, height: 1.5);
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static TextStyle get caption => PangolinFonts.manrope(
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fontSize: 12, fontWeight: FontWeight.w500, height: 1.5);
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static TextStyle get overline => PangolinFonts.manrope(
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fontSize: 12, fontWeight: FontWeight.w600, letterSpacing: 0.96);
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static TextStyle get mono => PangolinFonts.jetBrainsMono(
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fontSize: 14, fontWeight: FontWeight.w400,
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fontFeatures: const [FontFeature.tabularFigures()]);
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}
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/// ── Ready-to-use ThemeData ──────────────────────────────────────────
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class PangolinTheme {
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PangolinTheme._();
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static ThemeData get light => _build(PangolinScheme.light, Brightness.light);
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static ThemeData get dark => _build(PangolinScheme.dark, Brightness.dark);
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static ThemeData _build(PangolinScheme s, Brightness b) {
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final scheme = ColorScheme(
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brightness: b,
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primary: s.accent,
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onPrimary: s.fgOnAccent,
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secondary: s.accent,
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onSecondary: s.fgOnAccent,
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error: s.danger,
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onError: PangolinColors.white,
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surface: s.surface,
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onSurface: s.fg1,
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);
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return ThemeData(
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useMaterial3: true,
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brightness: b,
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colorScheme: scheme,
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scaffoldBackgroundColor: s.bg,
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// Manrope app-wide base font（生产 google_fonts / 测试 bundled）
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textTheme: PangolinFonts.manropeTextTheme(
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ThemeData(brightness: b).textTheme,
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),
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extensions: [s],
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filledButtonTheme: FilledButtonThemeData(
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style: FilledButton.styleFrom(
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backgroundColor: s.accent,
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foregroundColor: s.fgOnAccent,
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textStyle: PangolinFonts.manrope(fontWeight: FontWeight.w600, fontSize: 15),
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shape: const StadiumBorder(),
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padding: const EdgeInsets.symmetric(horizontal: 22, vertical: 14),
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),
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),
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cardTheme: CardThemeData(
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color: s.surface,
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elevation: 0,
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shape: RoundedRectangleBorder(
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side: BorderSide(color: s.border),
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borderRadius: BorderRadius.circular(PangolinRadius.lg),
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),
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),
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inputDecorationTheme: InputDecorationTheme(
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filled: true,
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fillColor: s.bg,
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(PangolinRadius.md),
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borderSide: BorderSide(color: s.borderStrong, width: 1.5),
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),
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focusedBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(PangolinRadius.md),
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borderSide: BorderSide(color: s.accent, width: 1.5),
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),
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),
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);
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}
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}
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