更新 AuthApi 枚举以添加获取推流地址的 API 路径;重构 Auth 页面以优化输入控件和按钮布局;更新扫码页面以导航到录制页面。
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import 'package:flutter/material.dart';
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/// 全局文本尺寸语义。
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///
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/// 业务代码应优先选择语义化的 variant,而不是直接散落 `fontSize`。
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/// 这样后续调整整套字号体系时,只需要维护这一处映射。
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enum AppTextVariant {
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display,
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headline,
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title,
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subtitle,
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body,
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bodySmall,
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label,
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caption,
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}
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/// 全局文本颜色语义。
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///
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/// tone 只表达“文本在界面中的语义角色”,具体颜色从当前 Theme 解析,
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/// 避免页面直接依赖硬编码色值。
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enum AppTextTone {
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primary,
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secondary,
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tertiary,
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inverse,
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brand,
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success,
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warning,
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danger,
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disabled,
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}
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/// 应用级文本组件。
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///
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/// `AppText` 是对 Flutter `Text` 的轻量封装,目标是统一页面里的字号、
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/// 字重、颜色和溢出策略,同时保留 `Text` 的常用能力。
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///
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/// 使用建议:
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/// - 普通文案使用默认 `AppText('内容')`。
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/// - 标题使用 `variant: AppTextVariant.title`。
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/// - 错误、警告、成功等状态文案使用 `tone`,不要在业务里直接写颜色。
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/// - 只有遇到一次性视觉细节时才传入 `style`、`fontSize` 或 `fontWeight`。
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class AppText extends StatelessWidget {
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const AppText(
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this.data, {
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super.key,
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this.variant = AppTextVariant.body,
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this.tone = AppTextTone.primary,
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this.style,
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this.color,
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this.fontSize,
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this.fontWeight,
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this.height,
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this.letterSpacing,
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this.textAlign,
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this.textDirection,
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this.locale,
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this.softWrap,
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this.overflow,
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this.maxLines,
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this.semanticsLabel,
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this.textWidthBasis,
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this.textHeightBehavior,
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this.textScaler,
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this.selectionColor,
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}) : textSpan = null;
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/// 富文本构造器。
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///
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/// 用于同一段文案中存在局部强调、不同颜色或不同字重的场景。
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/// 外层的 `variant`、`tone` 和通用排版参数仍会作为默认样式作用到 span。
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const AppText.rich(
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this.textSpan, {
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super.key,
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this.variant = AppTextVariant.body,
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this.tone = AppTextTone.primary,
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this.style,
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this.color,
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this.fontSize,
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this.fontWeight,
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this.height,
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this.letterSpacing,
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this.textAlign,
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this.textDirection,
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this.locale,
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this.softWrap,
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this.overflow,
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this.maxLines,
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this.semanticsLabel,
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this.textWidthBasis,
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this.textHeightBehavior,
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this.textScaler,
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this.selectionColor,
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}) : data = null;
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/// 普通文本内容。与 [textSpan] 二选一。
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final String? data;
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/// 富文本内容。与 [data] 二选一。
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final InlineSpan? textSpan;
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/// 文本尺寸和基础字重语义。
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final AppTextVariant variant;
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/// 文本颜色语义。
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final AppTextTone tone;
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/// 额外样式覆盖。优先级高于 variant 和 tone。
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final TextStyle? style;
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/// 显式颜色覆盖。优先级高于 tone 和 `style.color`。
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final Color? color;
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/// 一次性字号覆盖。常规场景优先使用 [variant]。
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final double? fontSize;
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/// 一次性字重覆盖。常规场景优先使用 [variant]。
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final FontWeight? fontWeight;
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/// 行高覆盖。
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final double? height;
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/// 字间距覆盖。
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final double? letterSpacing;
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final TextAlign? textAlign;
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final TextDirection? textDirection;
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final Locale? locale;
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final bool? softWrap;
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final TextOverflow? overflow;
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final int? maxLines;
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final String? semanticsLabel;
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final TextWidthBasis? textWidthBasis;
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final TextHeightBehavior? textHeightBehavior;
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final TextScaler? textScaler;
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final Color? selectionColor;
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@override
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Widget build(BuildContext context) {
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final effectiveStyle = _resolveStyle(context);
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if (textSpan != null) {
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return Text.rich(
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textSpan!,
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style: effectiveStyle,
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textAlign: textAlign,
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textDirection: textDirection,
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locale: locale,
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softWrap: softWrap,
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overflow: overflow,
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maxLines: maxLines,
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semanticsLabel: semanticsLabel,
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textWidthBasis: textWidthBasis,
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textHeightBehavior: textHeightBehavior,
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textScaler: textScaler,
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selectionColor: selectionColor,
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);
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}
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return Text(
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data ?? '',
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style: effectiveStyle,
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textAlign: textAlign,
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textDirection: textDirection,
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locale: locale,
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softWrap: softWrap,
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overflow: overflow,
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maxLines: maxLines,
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semanticsLabel: semanticsLabel,
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textWidthBasis: textWidthBasis,
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textHeightBehavior: textHeightBehavior,
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textScaler: textScaler,
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selectionColor: selectionColor,
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);
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}
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/// 合成最终样式。
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///
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/// 优先级从低到高:
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/// 1. Theme 中的 TextTheme。
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/// 2. `variant` 与 `tone` 对应的默认样式。
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/// 3. 外部传入的 `style`。
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/// 4. `color`、`fontSize`、`fontWeight` 等显式字段。
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TextStyle _resolveStyle(BuildContext context) {
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final baseStyle = _variantStyle(Theme.of(context).textTheme);
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final toneStyle = baseStyle.copyWith(color: _toneColor(context));
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final mergedStyle = style == null ? toneStyle : toneStyle.merge(style);
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return mergedStyle.copyWith(
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color: color ?? mergedStyle.color,
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fontSize: fontSize ?? mergedStyle.fontSize,
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fontWeight: fontWeight ?? mergedStyle.fontWeight,
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height: height ?? mergedStyle.height,
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letterSpacing: letterSpacing ?? mergedStyle.letterSpacing,
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);
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}
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TextStyle _variantStyle(TextTheme textTheme) {
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return switch (variant) {
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AppTextVariant.display =>
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textTheme.displaySmall ?? const TextStyle(fontSize: 36),
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AppTextVariant.headline =>
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textTheme.headlineSmall ?? const TextStyle(fontSize: 24),
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AppTextVariant.title =>
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textTheme.titleMedium ?? const TextStyle(fontSize: 16),
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AppTextVariant.subtitle =>
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textTheme.titleSmall ?? const TextStyle(fontSize: 14),
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AppTextVariant.body =>
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textTheme.bodyMedium ?? const TextStyle(fontSize: 14),
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AppTextVariant.bodySmall =>
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textTheme.bodySmall ?? const TextStyle(fontSize: 12),
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AppTextVariant.label =>
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textTheme.labelLarge ?? const TextStyle(fontSize: 14),
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AppTextVariant.caption =>
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textTheme.labelSmall ?? const TextStyle(fontSize: 11),
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};
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}
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Color _toneColor(BuildContext context) {
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final colors = Theme.of(context).colorScheme;
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return switch (tone) {
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AppTextTone.primary => colors.onSurface,
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AppTextTone.secondary => colors.onSurfaceVariant,
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AppTextTone.tertiary => colors.outline,
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AppTextTone.inverse => colors.onInverseSurface,
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AppTextTone.brand => colors.primary,
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AppTextTone.success => colors.tertiary,
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AppTextTone.warning => colors.secondary,
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AppTextTone.danger => colors.error,
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AppTextTone.disabled => colors.onSurface.withValues(alpha: 0.38),
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};
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}
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}
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