fix(windows): 收口 Capsule 几何契约

docs/windows-ui-tracking/issue-142-capsule-geometry.md

@@ -0,0 +1,23 @@
+# Issue #142 Placeholder / 占位
+
+## 中文摘要
+
+本 PR 是 issue #142 的 draft 占位，专门跟踪 Windows Capsule 变形、失真与尺寸错位问题。
+当前只保留问题边界、几何证据和后续修复准入条件，不引入业务逻辑改动。
+
+## Scope / 范围
+
+- Capsule native window bounds
+- visual pill metrics
+- badge position
+- Windows DPI / transparent window clipping
+
+## Evidence / 证据入口
+
+- `openless-all/app/src-tauri/src/lib.rs`
+- `openless-all/app/src/components/Capsule.tsx`
+- `openless-all/app/src/lib/capsuleLayout.ts`
+
+## Merge Rule / 合并规则
+
+- 仅当 issue #142 的几何对齐与 Windows smoke 验证完成后才允许从 draft 转为 ready。

openless-all/app/scripts/windows-ui-config.test.mjs

@@ -8,10 +8,57 @@ function assertEqual(actual, expected, name) {
 
 const raw = await readFile(new URL('../src-tauri/tauri.conf.json', import.meta.url), 'utf-8');
 const config = JSON.parse(raw);
-const mainWindow = config.app.windows.find((window) => window.label === 'main');
+const capsuleWindow = config.app.windows.find((window) => window.label === 'capsule');
+const libRs = await readFile(new URL('../src-tauri/src/lib.rs', import.meta.url), 'utf-8');
+const coordinatorRs = await readFile(new URL('../src-tauri/src/coordinator.rs', import.meta.url), 'utf-8');
+const capsuleTsx = await readFile(new URL('../src/components/Capsule.tsx', import.meta.url), 'utf-8');
+const capsuleLayoutTs = await readFile(new URL('../src/lib/capsuleLayout.ts', import.meta.url), 'utf-8');
 
-if (!mainWindow) {
-  throw new Error('main window config missing');
+if (!capsuleWindow) {
+  throw new Error('capsule window config missing');
 }
 
-assertEqual(mainWindow.decorations, false, 'windows main window should use only custom titlebar');
+assertEqual(capsuleWindow.width, 220, 'windows capsule config keeps translation-capable width baseline');
+assertEqual(capsuleWindow.height, 110, 'windows capsule config keeps translation-capable height baseline');
+assertEqual(capsuleWindow.transparent, true, 'capsule window should keep transparent visuals');
+assertEqual(capsuleWindow.alwaysOnTop, true, 'capsule window should stay above the focused app while recording');
+
+if (!/export function getCapsuleHostMetrics\(\s*os: OS,\s*translationActive: boolean,\s*\): CapsuleHostMetrics/.test(capsuleLayoutTs)) {
+  throw new Error('capsule layout should define explicit host metrics separate from the visible pill metrics');
+}
+
+if (!/if \(os === 'win'\)\s*\{[\s\S]*?width: 220,[\s\S]*?height: translationActive \? 118 : 84,[\s\S]*?bottomInset: 12,[\s\S]*?badgeGap: 8[\s\S]*?\}/.test(capsuleLayoutTs)) {
+  throw new Error('windows capsule host metrics should leave room for shadow and badge geometry');
+}
+
+if (!/const hostMetrics = getCapsuleHostMetrics\(os,\s*translation\);/.test(capsuleTsx)) {
+  throw new Error('capsule should derive host metrics from the shared layout contract');
+}
+
+if (!/justifyContent:\s*os === 'win' \? 'flex-end' : 'center'/.test(capsuleTsx)) {
+  throw new Error('windows capsule host should anchor the pill to the bottom instead of centering it inside the larger native host window');
+}
+
+if (!/paddingBottom:\s*os === 'win' \? hostMetrics\.bottomInset : 0/.test(capsuleTsx)) {
+  throw new Error('windows capsule host should respect the shared bottom inset');
+}
+
+if (!/bottom:\s*`\$\{hostMetrics\.bottomInset \+ metrics\.height \+ hostMetrics\.badgeGap\}px`/.test(capsuleTsx)) {
+  throw new Error('windows translation badge should anchor from the shared host inset instead of a fixed center-based offset');
+}
+
+if (!/#\[cfg\(target_os = "windows"\)\][\s\S]*?width: 220\.0[\s\S]*?height: if translation_active \{ 118\.0 \} else \{ 84\.0 \}[\s\S]*?bottom_inset: 12\.0,/.test(libRs)) {
+  throw new Error('windows runtime capsule bounds should leave room for the native shadow while keeping a fixed visual pill');
+}
+
+if (!/#\[cfg\(target_os = "windows"\)\]\s*\{\s*52\.0\s*\}/.test(libRs)) {
+  throw new Error('windows capsule visual pill height should stay at 52px');
+}
+
+if (!/window\.set_size\(LogicalSize::new\(bounds\.width, bounds\.height\)\)\?/.test(libRs)) {
+  throw new Error('capsule positioning should resync runtime size with the computed layout');
+}
+
+if (!/let _ = window\.hide\(\);/.test(coordinatorRs)) {
+  throw new Error('capsule should be hidden once it leaves active states');
+}

openless-all/app/src-tauri/src/lib.rs

@@ -450,7 +450,7 @@ fn position_qa_window<R: tauri::Runtime>(window: &tauri::WebviewWindow<R>) -> ta
     let size = monitor.size();
     let logical_w = size.width as f64 / scale;
     let logical_h = size.height as f64 / scale;
-    let capsule_height = capsule_window_size(false).1;
+    let capsule_height = capsule_height_for_qa();
     let x = ((logical_w - QA_WINDOW_WIDTH) / 2.0).max(0.0);
     let y = (logical_h
         - DOCK_BOTTOM_PADDING_FOR_QA
@@ -570,59 +570,94 @@ pub(crate) fn position_capsule_bottom_center<R: tauri::Runtime>(
         Some(m) => m,
         None => return Ok(()),
     };
-    let (cap_w, cap_h) = capsule_window_size(translation_active);
-    window.set_size(LogicalSize::new(cap_w, cap_h))?;
+    let bounds = capsule_window_bounds(translation_active);
+    window.set_size(LogicalSize::new(bounds.width, bounds.height))?;
 
     let scale = monitor.scale_factor();
     let size = monitor.size();
     let logical_w = size.width as f64 / scale;
     let logical_h = size.height as f64 / scale;
-    let x = ((logical_w - cap_w) / 2.0).max(0.0);
-    let y = (logical_h - cap_h - 80.0).max(0.0);
+    let x = ((logical_w - bounds.width) / 2.0).max(0.0);
+    let y = (logical_h - capsule_visual_height(translation_active) - 80.0 - bounds.bottom_inset)
+        .max(0.0);
     window.set_position(LogicalPosition::new(x, y))?;
     Ok(())
 }
 
-fn capsule_window_size(translation_active: bool) -> (f64, f64) {
+#[derive(Clone, Copy, Debug, PartialEq)]
+struct CapsuleWindowBounds {
+    width: f64,
+    height: f64,
+    bottom_inset: f64,
+}
+
+fn capsule_window_bounds(translation_active: bool) -> CapsuleWindowBounds {
+    #[cfg(target_os = "windows")]
+    {
+        CapsuleWindowBounds {
+            width: 220.0,
+            height: if translation_active { 118.0 } else { 84.0 },
+            bottom_inset: 12.0,
+        }
+    }
+
+    #[cfg(not(target_os = "windows"))]
+    {
+        CapsuleWindowBounds {
+            width: 176.0,
+            height: if translation_active { 110.0 } else { 42.0 },
+            bottom_inset: 0.0,
+        }
+    }
+}
+
+fn capsule_visual_height(_translation_active: bool) -> f64 {
     #[cfg(target_os = "windows")]
     {
-        let height = if translation_active { 110.0 } else { 52.0 };
-        (196.0, height)
+        52.0
     }
 
     #[cfg(not(target_os = "windows"))]
     {
-        let height = if translation_active { 110.0 } else { 42.0 };
-        (176.0, height)
+        42.0
     }
 }
 
 fn capsule_height_for_qa() -> f64 {
-    capsule_window_size(false).1
+    capsule_visual_height(false)
 }
 
 #[cfg(test)]
 mod tests {
-    use super::{capsule_height_for_qa, capsule_window_size};
+    use super::{capsule_height_for_qa, capsule_visual_height, capsule_window_bounds};
+
+    #[test]
+    fn capsule_window_bounds_leave_room_for_windows_shadow() {
+        let bounds = capsule_window_bounds(false);
+        #[cfg(target_os = "windows")]
+        assert_eq!((bounds.width, bounds.height, bounds.bottom_inset), (220.0, 84.0, 12.0));
+
+        #[cfg(not(target_os = "windows"))]
+        assert_eq!((bounds.width, bounds.height, bounds.bottom_inset), (176.0, 42.0, 0.0));
+    }
 
     #[test]
-    fn capsule_window_size_matches_visible_pill_when_not_translating() {
-        let (width, height) = capsule_window_size(false);
+    fn capsule_window_bounds_expand_for_translation_badge() {
+        let bounds = capsule_window_bounds(true);
         #[cfg(target_os = "windows")]
-        assert_eq!((width, height), (196.0, 52.0));
+        assert_eq!((bounds.width, bounds.height, bounds.bottom_inset), (220.0, 118.0, 12.0));
 
         #[cfg(not(target_os = "windows"))]
-        assert_eq!((width, height), (176.0, 42.0));
+        assert_eq!((bounds.width, bounds.height, bounds.bottom_inset), (176.0, 110.0, 0.0));
     }
 
     #[test]
-    fn capsule_window_size_expands_for_translation_badge() {
-        let (width, height) = capsule_window_size(true);
+    fn capsule_visual_height_matches_frontend_pill() {
         #[cfg(target_os = "windows")]
-        assert_eq!((width, height), (196.0, 110.0));
+        assert_eq!(capsule_visual_height(true), 52.0);
 
         #[cfg(not(target_os = "windows"))]
-        assert_eq!((width, height), (176.0, 110.0));
+        assert_eq!(capsule_visual_height(true), 42.0);
     }
 
     #[test]

openless-all/app/src/components/Capsule.tsx

@@ -2,6 +2,7 @@ import { useEffect, useState } from 'react';
 import { useTranslation } from 'react-i18next';
 import { detectOS, type OS } from './WindowChrome';
 import {
+  getCapsuleHostMetrics,
   getCapsuleMessageLayout,
   getCapsulePillMetrics,
 } from '../lib/capsuleLayout';
@@ -259,11 +260,13 @@ function Pill({ os, state, level, insertedChars, message, onCancel, onConfirm }:
 export function Capsule() {
   const { t } = useTranslation();
   const os = detectOS();
+  const metrics = getCapsulePillMetrics(os);
+  const [translation, setTranslation] = useState<boolean>(false);
+  const hostMetrics = getCapsuleHostMetrics(os, translation);
   const [state, setState] = useState<CapsuleState>(isTauri ? 'idle' : 'recording');
   const [level, setLevel] = useState<number>(isTauri ? 0 : 0.6);
   const [insertedChars, setInsertedChars] = useState<number>(0);
   const [message, setMessage] = useState<string | undefined>();
-  const [translation, setTranslation] = useState<boolean>(false);
 
   useEffect(() => {
     if (!isTauri) return;
@@ -309,7 +312,11 @@ export function Capsule() {
         position: 'relative',
         display: 'flex',
         alignItems: 'center',
-        justifyContent: 'center',
+        justifyContent: os === 'win' ? 'flex-end' : 'center',
+        paddingTop: os === 'win'
+          ? Math.max(0, hostMetrics.height - metrics.height - hostMetrics.bottomInset)
+          : 0,
+        paddingBottom: os === 'win' ? hostMetrics.bottomInset : 0,
         background: 'transparent',
         animation: os === 'win' ? 'none' : 'capsule-in .22s cubic-bezier(.2,.9,.3,1.1)',
       }}
@@ -324,7 +331,7 @@ export function Capsule() {
           left: '50%',
           // bottom = 50%（pill 中线）+ pill 半高 21px（capsuleLayout mac=42）+ 8px 间隔。
           // 只有翻译徽章可见时才需要额外高度；普通录音/转写状态由后端缩到 pill 本体，避免透明死区。
-          bottom: 'calc(50% + 21px + 8px)',
+          bottom: `${hostMetrics.bottomInset + metrics.height + hostMetrics.badgeGap}px`,
           transform: 'translateX(-50%)',
           pointerEvents: 'none',
         }}

openless-all/app/src/lib/capsuleLayout.ts

@@ -8,6 +8,13 @@ export interface CapsulePillMetrics {
   textWidth: number;
 }
 
+export interface CapsuleHostMetrics {
+  width: number;
+  height: number;
+  bottomInset: number;
+  badgeGap: number;
+}
+
 export interface CapsuleMessageLayout {
   allowWrap: boolean;
   lineClamp: number;
@@ -21,6 +28,17 @@ export function getCapsulePillMetrics(os: OS): CapsulePillMetrics {
   return { width: 176, height: 42, textWidth: 84 };
 }
 
+export function getCapsuleHostMetrics(
+  os: OS,
+  translationActive: boolean,
+): CapsuleHostMetrics {
+  if (os === 'win') {
+    return { width: 220, height: translationActive ? 118 : 84, bottomInset: 12, badgeGap: 8 };
+  }
+
+  return { width: 176, height: translationActive ? 110 : 42, bottomInset: 0, badgeGap: 8 };
+}
+
 export function getCapsuleMessageLayout(
   os: OS,
   kind: CapsuleMessageKind,