开发中途存档

src/views/ParticlePanel.vue

@@ -4,6 +4,17 @@
       <span>粒子系统 · 编辑器</span>
     </div>
 
+    <div class="config-toolbar">
+      <button title="保存全部编辑器配置 (Ctrl+S)" @click="saveConfig">保存配置</button>
+      <button title="加载本地编辑器配置" @click="configFileInput?.click()">加载配置</button>
+      <select v-model="selectedPreset" aria-label="预设列表" :disabled="!presetOptions.length || presetLoading" @pointerdown="refreshPresets" @focus="refreshPresets" @change="loadSelectedPreset">
+        <option value="">{{ presetOptions.length ? '选择预设' : '无预设文件' }}</option>
+        <option v-for="preset in presetOptions" :key="preset.file" :value="preset.file">{{ preset.name }}</option>
+      </select>
+      <input ref="configFileInput" hidden type="file" accept=".json,application/json" @change="onConfigFileChange" />
+    </div>
+    <div v-if="configMessage" class="config-message" :class="{ error: configError }">{{ configMessage }}</div>
+
     <!-- 1. 场景对象：创建入口始终可用，即使当前没有粒子系统。 -->
     <div class="group">
       <div class="group-head scene-head" @click="toggle('scene')">
@@ -768,7 +779,7 @@
 </template>
 
 <script setup lang="ts">
-import { computed, markRaw, reactive, ref, watchEffect } from 'vue'
+import { computed, markRaw, onMounted, reactive, ref, watchEffect } from 'vue'
 import { Texture } from 'pixi.js'
 import { useParticleStore } from '../store/particleStore'
 import { defaultConfig, ensureEmitterConfig } from '../core/particleEmitter'
@@ -778,11 +789,76 @@ import ParticleAttributeControl from './ParticleAttributeControl.vue'
 import ColorGradientEditor from './ColorGradientEditor.vue'
 import ImageResourceCard from './ImageResourceCard.vue'
 import SpineObjectPanel from '../spine/SpineObjectPanel.vue'
+import { downloadEditorConfig, loadEditorConfigFile, loadEditorConfigText } from '../editor/editorConfig'
 
 const store = useParticleStore()
+const configFileInput = ref<HTMLInputElement | null>(null)
+const selectedPreset = ref('')
+const presetOptions = ref<Array<{ name: string; file: string }>>([])
+const presetLoading = ref(false)
+const configMessage = ref('')
+const configError = ref(false)
 // 默认场景始终有一个可编辑的粒子系统；热更新保留现有系统时不重复创建。
 if (!store.systems.length) store.addSystem()
 
+function saveConfig() {
+  downloadEditorConfig(store)
+  configError.value = false
+  configMessage.value = '配置已保存到本地'
+}
+
+async function onConfigFileChange(event: Event) {
+  const input = event.target as HTMLInputElement
+  const file = input.files?.[0]
+  if (!file) return
+  configMessage.value = '正在加载配置…'
+  configError.value = false
+  try {
+    await loadEditorConfigFile(store, file)
+    configMessage.value = `已加载：${file.name}`
+  } catch (error) {
+    configError.value = true
+    configMessage.value = error instanceof Error ? error.message : String(error)
+  } finally {
+    input.value = ''
+  }
+}
+
+async function refreshPresets() {
+  try {
+    const response = await fetch(`/Preset/index.json?t=${Date.now()}`, { cache: 'no-store' })
+    if (!response.ok) throw new Error('无法读取预设列表')
+    const presets = await response.json()
+    presetOptions.value = Array.isArray(presets)
+      ? presets.filter((item): item is { name: string; file: string } => !!item && typeof item.name === 'string' && typeof item.file === 'string')
+      : []
+  } catch {
+    presetOptions.value = []
+  }
+}
+
+async function loadSelectedPreset() {
+  const file = selectedPreset.value
+  if (!file) return
+  presetLoading.value = true
+  configError.value = false
+  configMessage.value = '正在加载预设…'
+  try {
+    const response = await fetch(`/Preset/${encodeURIComponent(file)}`, { cache: 'no-store' })
+    if (!response.ok) throw new Error(`无法读取预设：${file}`)
+    await loadEditorConfigText(store, await response.text())
+    configMessage.value = `已加载预设：${file.replace(/\.json$/i, '')}`
+  } catch (error) {
+    configError.value = true
+    configMessage.value = error instanceof Error ? error.message : String(error)
+  } finally {
+    presetLoading.value = false
+    selectedPreset.value = ''
+  }
+}
+
+onMounted(refreshPresets)
+
 const activeIdx = computed(() => {
   const i = store.systems.findIndex((s) => s.id === store.activeId)
   return i >= 0 ? i : 0
@@ -1434,6 +1510,17 @@ function toggleResourceLock(resourceId: number) {
 .panel::-webkit-scrollbar-thumb:hover { background: #3a3a55; }
 .panel { scrollbar-width: thin; scrollbar-color: #2e2e44 transparent; }
 .panel-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; font-weight: 700; color: #ccd; }
+.config-toolbar { display: grid; grid-template-columns: auto auto minmax(0,1fr); gap: 6px; margin-bottom: 10px; }
+.config-toolbar button,.config-toolbar select {
+  min-width: 0; height: 30px; box-sizing: border-box; border: 1px solid #3b4864; border-radius: 6px;
+  background: #263149; color: #d6def0; font-size: 11px;
+}
+.config-toolbar button { padding: 0 9px; cursor: pointer; }
+.config-toolbar button:hover { border-color: #7169dc; background: #343d68; color: #fff; }
+.config-toolbar select { padding: 0 7px; overflow: hidden; text-overflow: ellipsis; }
+.config-toolbar select:disabled { color: #68738a; background: #1b2130; }
+.config-message { margin: -4px 0 9px; color: #83b9a2; font-size: 10px; }
+.config-message.error { color: #e8959e; }
 .empty, .panel-hint { color: #667; font-size: 12px; padding: 8px 0; }
 .group { border: 1px solid #2a2a3c; border-radius: 8px; margin-bottom: 10px; overflow: hidden; }
 .group-head {

src/views/Stage.vue

@@ -1,17 +1,18 @@
 <template>
   <div class="stage-wrap">
-    <div ref="holder" class="stage-holder" :class="{ grid: showGrid }" @wheel.prevent="onWheel" @pointerdown="onPanDown" @dblclick.prevent="onStageDoubleClick"></div>
+    <div ref="holder" class="stage-holder" :class="{ grid: store.settings.showGrid }" tabindex="0" @wheel.prevent="onWheel" @pointerdown="onPanDown" @dblclick.prevent="onStageDoubleClick"></div>
 
     <!-- 顶栏 -->
     <div class="topbar">
       <button class="settings-btn" @click="toggleSettings" title="系统设置">系统设置</button>
+      <button class="undo-btn" :disabled="editorHistoryState.undoCount === 0" @click="undoLastOperation" title="撤回上一步 (Ctrl+Z)">↶</button>
 
       <!-- 根变换工具:拖动(默认) / 位移 / 旋转 / 缩放 -->
       <div class="tool-group">
-        <button class="tool-btn" :class="{ on: activeTool === '' }" @click="setTool('')" title="拖动画布">✋</button>
-        <button class="tool-btn" :class="{ on: activeTool === 'translate' }" @click="setTool('translate')" title="位移">✥</button>
-        <button class="tool-btn" :class="{ on: activeTool === 'rotate' }" @click="setTool('rotate')" title="旋转">⟳</button>
-        <button class="tool-btn" :class="{ on: activeTool === 'scale' }" @click="setTool('scale')" title="缩放">⤢</button>
+        <button class="tool-btn" :class="{ on: activeTool === '' }" @click="toggleTool('')" title="拖动画布 (Q)">✋</button>
+        <button class="tool-btn" :class="{ on: activeTool === 'translate' }" @click="toggleTool('translate')" title="位移 (W)">✥</button>
+        <button class="tool-btn" :class="{ on: activeTool === 'rotate' }" @click="toggleTool('rotate')" title="旋转 (E)">⟳</button>
+        <button class="tool-btn" :class="{ on: activeTool === 'scale' }" @click="toggleTool('scale')" title="缩放 (R)">⤢</button>
       </div>
 
       <!-- 工具按钮组(参考画布工具栏) -->
@@ -19,7 +20,7 @@
         <button class="tool-btn" @click="zoomIn" title="放大">＋</button>
         <button class="tool-btn" @click="zoomOut" title="缩小">－</button>
         <button class="tool-btn" @click="fitView" title="适配画布">⤢</button>
-        <button class="tool-btn" :class="{ on: showGrid }" @click="toggleGrid" title="切换网格">▦</button>
+        <button class="tool-btn" :class="{ on: store.settings.showGrid }" @click="toggleGrid" title="切换网格">▦</button>
         <button class="tool-btn" @click="resetView" title="重置视图">⟳</button>
       </div>
 
@@ -44,13 +45,13 @@
           />
           <div class="background-file-name" :title="backgroundFileName">{{ backgroundFileName || '未上传图像' }}</div>
           <div class="background-position-row">
-            <label><span>X</span><input v-model.number="backgroundX" type="number" step="1" aria-label="背景图 X 偏移" /></label>
-            <label><span>Y</span><input v-model.number="backgroundY" type="number" step="1" aria-label="背景图 Y 偏移" /></label>
+            <label><span>X</span><input v-model.number="store.settings.backgroundX" type="number" step="1" aria-label="背景图 X 偏移" /></label>
+            <label><span>Y</span><input v-model.number="store.settings.backgroundY" type="number" step="1" aria-label="背景图 Y 偏移" /></label>
           </div>
           <label class="background-opacity-row">
             <span>透明度</span>
-            <input v-model.number="backgroundOpacity" type="range" min="0" max="1" step="0.01" aria-label="背景图透明度" />
-            <b>{{ Math.round(backgroundOpacity * 100) }}%</b>
+            <input v-model.number="store.settings.backgroundOpacity" type="range" min="0" max="1" step="0.01" aria-label="背景图透明度" />
+            <b>{{ Math.round(store.settings.backgroundOpacity * 100) }}%</b>
           </label>
         </div>
       </div>
@@ -62,10 +63,23 @@
     <!-- 系统设置面板(左上角弹出) -->
     <div class="settings-panel" v-if="showSettings">
       <div class="sp-head">系统设置 <button class="sp-close" @click="showSettings = false">✕</button></div>
+      <div class="sp-section-title">操作历史</div>
+      <label class="sp-row"><span>最大撤回步数</span>
+        <input
+          class="sp-num sp-undo-limit"
+          type="number"
+          min="1"
+          max="200"
+          v-model.number="store.settings.undoLimit"
+          aria-label="最大撤回步数"
+          @change="onUndoLimitChange"
+        />
+      </label>
+      <div class="sp-divider"></div>
       <div class="sp-section-title">画布辅助显示</div>
-      <label class="sp-chk"><input type="checkbox" v-model="showEmitter" />发射点</label>
-      <label class="sp-chk"><input type="checkbox" v-model="showBones" />骨骼连线</label>
-      <label class="sp-chk"><input type="checkbox" v-model="showSkinMesh" />蒙皮网格</label>
+      <label class="sp-chk"><input type="checkbox" v-model="store.settings.showEmitter" />发射点</label>
+      <label class="sp-chk"><input type="checkbox" v-model="store.settings.showBones" />骨骼连线</label>
+      <label class="sp-chk"><input type="checkbox" v-model="store.settings.showSkinMesh" />蒙皮网格</label>
       <div class="sp-divider"></div>
       <label class="sp-chk"><input type="checkbox" v-model="store.settings.tickEnabled" />启用刻度</label>
       <template v-if="store.settings.tickEnabled">
@@ -98,30 +112,49 @@ import { Application, Container, Graphics, Sprite, Text, Texture } from 'pixi.js
 import { ParticleEmitter, ensureEmitterConfig, type ParticleState } from '../core/particleEmitter'
 import { useParticleStore, type CollisionBody, type ScenePath } from '../store/particleStore'
 import { SpineRuntimeLayer } from '../spine/SpineRuntimeLayer'
+import { editorHistoryState, installEditorHistory, setUndoLimit, undoLastOperation } from '../editor/editorHistory'
+import { useEditorShortcuts } from '../editor/useEditorShortcuts'
+import { fileToDataUrl } from '../spine/spineSourceBundle'
+import { downloadEditorConfig } from '../editor/editorConfig'
 
 const store = useParticleStore()
 const holder = ref<HTMLElement | null>(null)
-const showEmitter = ref(true)
-const showBones = ref(false)
-const showSkinMesh = ref(false)
 const info = ref<{ systems: number; particles: number } | null>(null)
-const showGrid = ref(true)
 const showSettings = ref(false)
 const showBackgroundMenu = ref(false)
 const backgroundFileInput = ref<HTMLInputElement | null>(null)
-const backgroundFileName = ref('')
-const backgroundX = ref(0)
-const backgroundY = ref(0)
-const backgroundOpacity = ref(1)
+const backgroundFileName = computed(() => store.settings.backgroundImageName)
 // 根变换 gizmo 工具:'translate' | 'rotate' | 'scale' | ''(无)
 const activeTool = ref<'' | 'translate' | 'rotate' | 'scale'>('')
-function setTool(t: '' | 'translate' | 'rotate' | 'scale') { activeTool.value = activeTool.value === t ? '' : t }
+const canvasFocused = ref(false)
+function toggleTool(t: '' | 'translate' | 'rotate' | 'scale') { activeTool.value = activeTool.value === t ? '' : t }
+
+if (!(store.settings.undoLimit > 0)) store.settings.undoLimit = 20
+if (!Number.isFinite(store.settings.backgroundX)) store.settings.backgroundX = 0
+if (!Number.isFinite(store.settings.backgroundY)) store.settings.backgroundY = 0
+if (!Number.isFinite(store.settings.backgroundOpacity)) store.settings.backgroundOpacity = 1
+if (store.settings.backgroundImageName == null) store.settings.backgroundImageName = ''
+if (store.settings.backgroundImageData == null) store.settings.backgroundImageData = ''
+if (store.settings.showEmitter == null) store.settings.showEmitter = true
+if (store.settings.showBones == null) store.settings.showBones = false
+if (store.settings.showSkinMesh == null) store.settings.showSkinMesh = false
+if (store.settings.showGrid == null) store.settings.showGrid = true
+
+useEditorShortcuts({
+  canvasElement: holder,
+  canvasFocused,
+  undo: undoLastOperation,
+  save: () => downloadEditorConfig(store),
+  togglePlay: () => store.togglePlay(),
+  toStart: () => store.toStart(),
+  setTool: (tool) => { activeTool.value = tool },
+})
 
 let app: Application | null = null
 let world: Container | null = null
 let backgroundSprite: Sprite | null = null
 let backgroundTexture: Texture | null = null
-let backgroundObjectUrl = ''
+let backgroundLoadVersion = 0
 let originGfx: Graphics | null = null
 let boneFollowTargetGfx: Graphics | null = null
 let boneGfx: Graphics | null = null
@@ -143,6 +176,7 @@ let dotTex: Texture<any> | null = null
 let trailTex: Texture<any> | null = null
 
 const emitterMap = new Map<number, ParticleEmitter>()
+const emitterConfigMap = new Map<number, object>()
 let previewColliders: CollisionBody[] = []
 const emitterPreviewTransform = new Map<number, { x: number; y: number; rotation: number }>()
 const selectedPathNodes = new Set<number>()
@@ -203,45 +237,59 @@ function toggleSettings() {
   if (showSettings.value) showBackgroundMenu.value = false
 }
 
+function onUndoLimitChange(event: Event) {
+  setUndoLimit(store, Number((event.target as HTMLInputElement).value))
+}
+
 async function onBackgroundFileChange(event: Event) {
   const input = event.target as HTMLInputElement
   const file = input.files?.[0]
-  if (!file || !backgroundSprite) return
-  const nextUrl = URL.createObjectURL(file)
+  if (!file) return
   try {
-    const nextTexture = await Texture.fromURL(nextUrl)
-    const previousTexture = backgroundTexture
-    const previousUrl = backgroundObjectUrl
-    backgroundTexture = nextTexture
-    backgroundObjectUrl = nextUrl
-    backgroundSprite.texture = nextTexture
-    backgroundSprite.visible = true
-    backgroundFileName.value = file.name
-    if (previousTexture) previousTexture.destroy(true)
-    if (previousUrl) URL.revokeObjectURL(previousUrl)
+    store.settings.backgroundImageData = await fileToDataUrl(file)
+    store.settings.backgroundImageName = file.name
   } catch (error) {
-    URL.revokeObjectURL(nextUrl)
     console.error('背景图加载失败', error)
   } finally {
     input.value = ''
   }
 }
 
-function clearBackground(resetControls = true) {
-  if (backgroundSprite) {
-    backgroundSprite.texture = Texture.EMPTY
-    backgroundSprite.visible = false
+async function syncBackgroundTexture(dataUrl: string) {
+  const version = ++backgroundLoadVersion
+  if (!dataUrl) {
+    if (backgroundSprite) {
+      backgroundSprite.texture = Texture.EMPTY
+      backgroundSprite.visible = false
+    }
+    if (backgroundTexture) backgroundTexture.destroy(true)
+    backgroundTexture = null
+    return
   }
-  if (backgroundTexture) backgroundTexture.destroy(true)
-  if (backgroundObjectUrl) URL.revokeObjectURL(backgroundObjectUrl)
-  backgroundTexture = null
-  backgroundObjectUrl = ''
-  backgroundFileName.value = ''
+  try {
+    const texture = await Texture.fromURL(dataUrl)
+    if (version !== backgroundLoadVersion || !backgroundSprite) {
+      texture.destroy(true)
+      return
+    }
+    const previous = backgroundTexture
+    backgroundTexture = texture
+    backgroundSprite.texture = texture
+    backgroundSprite.visible = true
+    if (previous) previous.destroy(true)
+  } catch (error) {
+    console.error('背景图恢复失败', error)
+  }
+}
+
+function clearBackground(resetControls = true) {
+  store.settings.backgroundImageData = ''
+  store.settings.backgroundImageName = ''
   if (backgroundFileInput.value) backgroundFileInput.value.value = ''
   if (resetControls) {
-    backgroundX.value = 0
-    backgroundY.value = 0
-    backgroundOpacity.value = 1
+    store.settings.backgroundX = 0
+    store.settings.backgroundY = 0
+    store.settings.backgroundOpacity = 1
   }
 }
 
@@ -737,12 +785,18 @@ function viewScaleBy(factor: number) {
 }
 function fitView() { store.editor.viewScale = 1.0; store.editor.viewX = 0; store.editor.viewY = 0 }
 function resetView() { store.editor.viewScale = 1.0; store.editor.viewX = 0; store.editor.viewY = 0 }
-function toggleGrid() { showGrid.value = !showGrid.value }
+function toggleGrid() { store.settings.showGrid = !store.settings.showGrid }
 
 function syncEmitters() {
   if (!world) return
   for (const [id, em] of emitterMap) {
-    if (!store.systems.some((s) => s.id === id)) { world.removeChild(em); em.destroy({ children: true }); emitterMap.delete(id) }
+    const system = store.systems.find((item) => item.id === id)
+    if (!system || emitterConfigMap.get(id) !== system.config) {
+      world.removeChild(em)
+      em.destroy({ children: true })
+      emitterMap.delete(id)
+      emitterConfigMap.delete(id)
+    }
   }
   for (const sys of store.systems) {
     // 新增系统若还没贴图(dotTex 已加载后),补上默认点纹理,否则无法渲染
@@ -764,6 +818,7 @@ function syncEmitters() {
     em.setEmitterPos(() => ({ x: sys.config.centerX, y: sys.config.centerY }))
     world.addChild(em)
     emitterMap.set(sys.id, em)
+    emitterConfigMap.set(sys.id, sys.config)
   }
 }
 
@@ -771,7 +826,7 @@ function drawOrigin() {
   if (!originGfx) return
   const g = originGfx
   g.clear()
-  if (!showEmitter.value) return
+  if (!store.settings.showEmitter) return
   // 每个系统对应一个发射点(坐标点);没有系统时不画
   if (!store.systems.length) return
   for (const sys of store.systems) {
@@ -836,7 +891,7 @@ function drawShapeRange() {
   if (!shapeGfx) return
   const g = shapeGfx
   g.clear()
-  if (!showEmitter.value) return
+  if (!store.settings.showEmitter) return
   const sys = store.systems.find((s) => s.id === store.activeId)
   if (!sys || sys.visible === false) return
   const c = sys.config
@@ -1022,7 +1077,7 @@ function drawBones(bones: BonePreview[]) {
   if (!boneGfx) return
   const g = boneGfx
   g.clear()
-  if (!showBones.value) return
+  if (!store.settings.showBones) return
   const cx = 0, cy = 0
   // root → 每颗粒子骨骼 的连线
   for (const b of bones) {
@@ -1237,8 +1292,8 @@ function loop() {
     world.scale.set(store.editor.viewScale)
     world.position.set(app.screen.width / 2 + store.editor.viewX, app.screen.height * 0.5 + store.editor.viewY)
     if (backgroundSprite) {
-      backgroundSprite.position.set(Number(backgroundX.value) || 0, -(Number(backgroundY.value) || 0))
-      backgroundSprite.alpha = Math.min(1, Math.max(0, Number(backgroundOpacity.value) || 0))
+      backgroundSprite.position.set(Number(store.settings.backgroundX) || 0, -(Number(store.settings.backgroundY) || 0))
+      backgroundSprite.alpha = Math.min(1, Math.max(0, Number(store.settings.backgroundOpacity) || 0))
     }
 
     drawAxis()
@@ -1411,7 +1466,7 @@ function loop() {
     }
     timelineDisplayFrame = displayFrame
     spineRuntime?.sync(store.spines, displayFrame, fps)
-    for (const [, emitter] of emitterMap) emitter.drawTrailMeshDebug(showSkinMesh.value)
+    for (const [, emitter] of emitterMap) emitter.drawTrailMeshDebug(store.settings.showSkinMesh)
     drawCollisionBodies()
     drawPaths()
     drawBoneFollowTargets()
@@ -1430,6 +1485,7 @@ onMounted(async () => {
   app = new Application({ width: el.clientWidth || 800, height: el.clientHeight || 600, backgroundAlpha: 0, antialias: true })
   el.appendChild(app.view as unknown as HTMLCanvasElement)
   createLayers()
+  watch(() => store.settings.backgroundImageData, syncBackgroundTexture, { immediate: true })
   await loadTexture()
   const tex = dotTex as Texture<any>
   for (const sys of store.systems) {
@@ -1474,13 +1530,16 @@ onMounted(async () => {
       store.timeline.loop = true
     },
   )
+  installEditorHistory(store)
 })
 
 onUnmounted(() => {
   cancelAnimationFrame(raf)
   spineRuntime?.destroy()
   spineRuntime = null
-  clearBackground(false)
+  backgroundLoadVersion++
+  if (backgroundTexture) backgroundTexture.destroy(true)
+  backgroundTexture = null
   backgroundSprite = null
   if (app) { app.destroy(true, { children: true }); app = null }
 })
@@ -1492,6 +1551,7 @@ onUnmounted(() => {
 .stage-holder {
   width: 100%; height: 100%; cursor: grab; touch-action: none;
   background-color: #0e1219;
+  outline: none;
 }
 .stage-holder.grid {
   background: conic-gradient(#141a26 90deg, transparent 90deg 180deg, #141a26 180deg 270deg, transparent 270deg);
@@ -1557,6 +1617,12 @@ b { color: #ffcc33; }
   background: #202a3b; color: #cdf; font-size: 12px; font-weight: 700; cursor: pointer;
 }
 .settings-btn:hover { border-color: #7774ff; background: #2b3a5c; color: #fff; }
+.undo-btn {
+  width: 30px; height: 28px; flex: 0 0 30px; border: 1px solid #3a4963; border-radius: 6px;
+  background: #202a3b; color: #cdd8ed; font-size: 18px; line-height: 1; cursor: pointer;
+}
+.undo-btn:hover:not(:disabled) { border-color: #7774ff; background: #2b3a5c; color: #fff; }
+.undo-btn:disabled { opacity: .38; cursor: not-allowed; }
 .settings-panel {
   position: absolute; top: 52px; left: 10px; width: 240px; z-index: 10;
   background: rgba(20,20,32,0.97); border: 1px solid #2a2a3c; border-radius: 10px; padding: 10px 12px;
@@ -1570,6 +1636,7 @@ b { color: #ffcc33; }
 .sp-row > span:first-child { width: 76px; flex-shrink: 0; color: #8a93bb; }
 .sp-row input[type=range] { flex: 1; background: #1a1a28; accent-color: #3a5a8c; }
 .sp-num { width: 52px; background: #1a1a28; border: 1px solid #2e2e44; border-radius: 5px; color: #dde; font-size: 12px; padding: 2px 4px; }
+.sp-undo-limit { margin-left: auto; width: 64px; height: 26px; box-sizing: border-box; }
 .sp-colr { width: 26px; height: 22px; border: none; background: none; cursor: pointer; }
 .sp-hex { font-size: 11px; color: #889; font-variant-numeric: tabular-nums; }
 .sp-chk { display: flex; align-items: center; gap: 6px; margin: 8px 0; color: #aab; }

src/views/Timeline.vue

@@ -2,10 +2,10 @@
   <div class="timeline">
     <!-- 控制按钮 -->
     <div class="tl-controls">
-      <button class="tl-btn" :class="{ on: store.timeline.playing }" @click="store.togglePlay()" :title="store.timeline.playing ? '暂停' : '播放'">
+      <button class="tl-btn" :class="{ on: store.timeline.playing }" @click="store.togglePlay()" :title="store.timeline.playing ? '暂停 (D)' : '播放 (D)'">
         {{ store.timeline.playing ? '❚❚' : '▶' }}
       </button>
-      <button class="tl-btn" @click="store.toStart()" title="回到第一帧">⏮</button>
+      <button class="tl-btn" @click="store.toStart()" title="回到第一帧 (S)">⏮</button>
       <button class="tl-btn" @click="store.previousFrame()" title="前一帧">◀</button>
       <button class="tl-btn" @click="store.nextFrame()" title="后一帧">▶</button>
       <button class="tl-btn" @click="store.toEnd()" title="移动到最后一帧">⏭</button>