feat(m179): 外观分组接真语言并拆成五段文件(只接管子,不补文案)

M172 审计:`pages/appearance/**` 中文界面下真正本地化 0/27,两个根因各断一刀。

① 拆文件(纯搬移):`section.rs` 395 行 → `section/` 五个文件,行数守卫只剩 5 行余量,
   不拆就加不了任何东西。
   - `section/mod.rs`(壳:section() + card() + 五个行控件 + 取词口 t)
   - `section/window.rs`(① 整窗 α + ② 圆角,含 notice/说明段)
   - `section/panel.rs`(③ 面板 α)、`section/bg_image.rs`(④⑤⑥⑦⑧)、
     `section/colour_source.rs`(⑨)
   取证:每段与原文件做「去空白/去尾逗号」diff,4/4 相同;只有五处机械改写
   (`rows = rows.push(…)`→`rows.push(…)`、`t(Key::X)`→`t(Key::X, lang)`、
   `super::notice`→`super::super::notice`、一处 `.into()`、rustfmt 换行)。

② 语言接到渲染层:`settings::Body` 从 `fn(&Ui, States)` 变成 `fn(&Ui, States, Lang)`,
   `form` 传 `language.effective`,`settings/appearance.rs` 收 `lang` 转给
   `pages::appearance::section(ui, state, lang)`,`section::t(key, lang)` 取词。
   选「接进唯一那个槽位」而不是再给 `form` 加一条按下标分发的 `else if`:`settings/mod.rs`
   贴着 400 行硬顶(M195 还要在此落地),这条路净增 0 行且不可能与分发表漂开。
   验收点:`pages/appearance/**` 里已经搜不到 `Lang::En`。

③ 能变红的守卫:`the_appearance_group_speaks_chinese_when_the_interface_does`
   —— 走 `settings::view` 真分发渲染一帧,断言取词记录里含汉字、英文那帧不含汉字且同一 key
   中英译文不同。取证口是 `appearance::probe`(`#[cfg(test)]` thread_local):iced 0.14
   没有可遍历控件树的公开接口(`Widget::children()` 返回状态 Tree;`operate` 要 Renderer),
   所以取证点退到「字进树之前」的唯一取词口。变异证明:把 `t()` 改回 `Lang::En.catalog()`
   ⇒ 该用例红(失败信息逐条列出四条英文);还原 ⇒ 绿。

只接语言管子,不补文案:本组其余英文仍是字面量(行号见 M179 报告)。真实窗口截图、
macOS/Linux 字体差异未验。
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AskaEth committed 2026-11-08 20:42:28 +08:00
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//! 外观分组第 ③ 段:**面板透明度**滑块(下限 0.4;CPU 档强制 1.0 并禁用滑块)。
use iced::Element;
use crate::app::components::inputs::{slider, Slider};
use crate::pages::Message;
use crate::theme::Ui;
use super::super::alpha::{panel_alpha_from_fraction, panel_fraction};
use super::super::state::State;
use super::super::Change;
use super::slider_row;
/// 把 ③ 面板透明度推进 `rows`。
pub(super) fn push<'a>(ui: &'a Ui, state: &'a State, rows: &mut Vec<Element<'a, Message>>) {
// ③ 面板透明度(CPU 档强制 1.0)
let forced = state.panel_is_forced();
let panel_percent = if forced {
format!("100% (forced from {:.2})", state.panel_alpha)
} else {
format!("{:.0}%", state.effective_panel_alpha() * 100.0)
};
let panel_hint = if forced {
"Software renderer: panels stay fully opaque (window transparency still works)."
} else {
"Only the panel/card layer. Floor 0.40; independent of window transparency."
};
let panel_control = if forced {
slider(Slider::new(ui, panel_fraction(1.0)))
} else {
slider(
Slider::new(ui, panel_fraction(state.panel_alpha)).on_change(|fraction| {
Message::Appearance(Change::PanelAlpha(panel_alpha_from_fraction(fraction)))
}),
)
};
rows.push(slider_row(
ui,
"Panel transparency",
panel_percent,
panel_hint.to_owned(),
!forced,
panel_control,
));
}