fix(chart): refine axis number formatting

fix(chart): support wheel zoom out
fix(chart): retain axes in clean view
2026-08-04 11:28:42 +08:00 · 2026-07-31 12:07:08 +08:00 · 2026-07-31 10:27:27 +08:00 · 2026-07-29 15:50:25 +08:00 · 2026-07-29 12:27:30 +08:00 · 2026-07-29 12:12:03 +08:00
54 changed files with 1786 additions and 319 deletions
--- a/README.md
+++ b/README.md
@@ -12,6 +12,9 @@

 最新稳定版 Demo：<https://lqycustomsite.online/waveform-analysis/>

+本地运行 `pnpm dev` 后，可通过
+<http://127.0.0.1:5173/#/fixed-y-domain> 查看固定振幅上下限示例。
+
 ## 特性

 - Vue 3 Composition API + TypeScript，支持按需导入 `WaveformChart`
@@ -22,6 +25,7 @@
 - 缩放过程事件、缩放结束按可视区间加载和视口重置
 - 可选的空格拖拽平移，默认关闭并隔离多图表实例
 - 多系列图例、受控显隐、网格分页和最多四根 Y 轴
+- 自动 Y 轴范围，以及全局、按轨道或按系列配置的固定振幅范围
 - 按轨道控制水平/垂直网格线的显隐与颜色
 - 受控标注、右键编辑、拖拽避让和自定义颜色
 - 标题、图框、坐标轴、零值参考线、净图和渲染参数可配置
@@ -107,13 +111,16 @@ const data = ref<WaveformData>({
 | `minVisiblePoints`                | `number`                                    | `0`                                                     | 缩放后至少保留的不同 X 坐标数     |
 | `initialXDomain`                  | `[number, number]`                          | 未设置                                                  | 所有图框的初始 X 范围             |
 | `initialXDomains`                 | `Record<string, [number, number]>`          | 未设置                                                  | 按 track/series ID 配置初始范围   |
+| `yDomain`                         | `[number, number]`                          | 未设置                                                  | 所有波形的固定 Y 轴范围           |
+| `yDomains`                        | `Record<string, [number, number]>`          | 未设置                                                  | 按 track/series ID 配置固定范围   |
 | `grid`                            | `WaveformGridOptions`                       | `{ rowCount: 2, columnCount: 1, showPagination: true }` | 网格和分页                        |
 | `axes`                            | `WaveformAxesOptions`                       | 轴线均显示                                              | X/Y 轴基线显隐                    |
 | `rendering`                       | `WaveformRenderingOptions`                  | `{}`                                                    | 降采样与点/误差棒间距             |
 | `title` / `legend` / `frameStyle` | 对应公开类型                                | 未设置                                                  | 标题、图例和图框样式              |
 | `frameNumber`                     | `string \| number`                          | 未设置                                                  | 图框水印内容                      |
 | `zeroLine`                        | `WaveformZeroLineOptions`                   | `{ visible: false }`                                    | 零值参考线显隐与样式              |
-| `cleanView`                       | `boolean`                                   | `false`                                                 | 仅保留波形的净图模式              |
+| `cleanView`                       | `boolean`                                   | `false`                                                 | 保留波形、图框和刻度的净图模式    |
+| `presentationMode`                | `boolean`                                   | `false`                                                 | 禁用绘图区交互的展示模式          |
 | `annotations`                     | `WaveformAnnotation[]`                      | `[]`                                                    | 受控标注数据                      |
 | `annotationsVisible`              | `boolean`                                   | `true`                                                  | 标注图层显隐                      |
 | `interactionMode`                 | `'zoom' \| 'annotation'`                    | `'zoom'`                                                | 左键交互模式                      |
@@ -176,11 +183,43 @@ import 'waveform-analysis/style.css'
 </template>
 ```

+### 固定振幅上下限
+
+未传入 Y 轴范围时，组件继续根据当前可见系列及其误差棒自动计算范围。传入 `yDomain`
+后，所有波形使用同一个固定范围；超出范围的部分只在绘图区裁剪，不会过滤或修改原始数据：
+
+```vue
+<WaveformChart :data="chartData" :y-domain="[-80, 80]" />
+```
+
+多通道可以通过 `yDomains` 按稳定的 `trackId` 或 `seriesId` 分别配置：
+
+```vue
+<WaveformChart
+  :data="chartData"
+  :y-domain="[-100, 100]"
+  :y-domains="{
+    voltage: [-65, 65],
+    current: [-260, 260],
+  }"
+/>
+```
+
+范围优先级为 `trackId` 配置、`seriesId` 配置、全局 `yDomain`、数据自动范围。上下限必须
+是两个有限且不相等的数字；倒序范围会自动调整为升序，无效配置会回退到下一优先级。
+固定范围会精确作为坐标域使用，不会经过 D3 的 `nice()` 扩展。
+
+单值轴叠加模式会合并同一根轴上所有可见系列的有效范围；多值轴模式按系列分别使用配置，
+超过四根轴后复用第 4 根轴的系列会取范围并集。隐藏系列不参与公共范围合并。
+
+固定范围存在时，对应图框的 Y 轴不会被平移或视口重置覆盖；X 轴缩放、平移和重置保持原有
+行为。运行时更新或移除 `yDomain` / `yDomains` 会立即重新布局，移除后恢复自动范围。
+
 ### 缩放后按可视区间加载数据

 组件支持 Plotly 风格的矩形框选缩放：在 zoom 模式下按住鼠标左键拖拽，松开后同时缩放
 X/Y 轴；设置 `pannable` 后，指针位于图表内时按住空格键拖拽可平移当前视口。
-鼠标滚轮仍可放大，双击恢复完整视口。
+鼠标滚轮可放大和缩小，双击恢复完整视口。
 组件会在滚轮或框选缩放结束后触发 `zoom-end`，调用方可以使用端点请求后端，再通过
 `data` 传回新数据。独立分图模式还会包含 `trackIndex` 和稳定的 `seriesIds`。

@@ -410,9 +449,10 @@ scale 定位零线：
 `dash` 直接对应 SVG 的 `stroke-dasharray`；传入空字符串可显示实线。无效或非正数的
 `width` 会回退到 `1`。

-设置 `cleanView` 后，组件隐藏标题内容、图例、网格、坐标轴、轴标签、图框背景与边框、帧水印、
-零值参考线、标注和分页器，同时保留原图的标题区域、边距和波形尺寸。缩放、悬浮、十字线和
-tooltip 仍然可用，切换回普通模式后原有配置和标注不会丢失：
+设置 `cleanView` 后，组件保留波形、图框边框、X/Y 轴刻度及刻度值，并隐藏标题内容、图例、
+网格、轴标签、图框背景、帧水印、零值参考线、标注和分页器。原图的标题区域、边距和波形
+尺寸保持不变；缩放、悬浮、十字线和 tooltip 仍然可用，切换回普通模式后原有配置和标注
+不会丢失：

 ```vue
 <WaveformChart :data="chartData" :clean-view="cleanViewEnabled" />
@@ -471,6 +511,14 @@ tooltip 仍然可用，切换回普通模式后原有配置和标注不会丢失
 `interactionMode` 可选 `zoom` 或 `annotation`，默认使用缩放模式。右键绘图区可直接打开
 标注编辑器，无需切换交互模式。`zoomable`、`pannable` 和 `showTooltip` 可分别控制缩放、
 空格拖拽平移和 tooltip；平移默认关闭。
+
+展示场景可启用 `presentationMode`，统一禁用绘图区的 tooltip、缩放、平移、双击复位和
+标注交互。该模式不会隐藏任何图形内容，也不会禁用图例切换或分页；关闭后恢复原交互配置。
+
+```vue
+<WaveformChart :data="chartData" :presentation-mode="true" />
+```
+
 空数据或过滤后没有有效点时，组件会保留图框布局并显示“暂无有效波形数据”。

 ## 大数据渲染
@@ -555,7 +603,7 @@ async function importAnnotationFile(file: File) {
 字段无效时会抛出 `TypeError`，不会返回部分结果。导入包含未知 `seriesId` 的标注是允许的，
 对应曲线加载后会恢复显示。文件选择、错误提示和下载由业务层实现。

-X、Y 轴会根据各自完整显示域选择格式：最大绝对值在 `[0.01, 100)` 时显示两位普通小数；大于等于 `100`，或大于 `0` 且小于 `0.01` 时，刻度显示两位缩放值，并在轴末端单独显示共享倍率 `E±NN`。X 轴先按 `timeUnit` 转换为秒或毫秒再判断范围，多 Y 轴则分别计算倍率。tooltip 使用最多 4 位小数的本地化普通数字；标注编辑器的 X 坐标跟随 `timeUnit` 并固定 3 位小数，Y 坐标显示完整普通十进制。所有格式化都只发生在展示层，内部坐标值保持原始精度。
+X 轴刻度和左右端点先按 `timeUnit` 转换为秒或毫秒，再四舍五入为不带分组符的普通整数，不使用科学计数法。Y 轴会根据完整显示域选择格式：最大绝对值在 `[0.01, 100)` 时显示两位普通小数；大于等于 `100`，或大于 `0` 且小于 `0.01` 时，刻度显示两位缩放值，并在轴末端单独显示共享倍率 `E±NN`，多 Y 轴分别计算倍率。tooltip 使用最多 4 位小数的本地化普通数字并省略无意义尾零；标注编辑器的 X 坐标跟随 `timeUnit` 并固定 3 位小数，Y 坐标显示完整普通十进制。所有格式化都只发生在展示层，内部坐标值保持原始精度。
 标注框默认布局在采样点正上方，只做绘图区边界裁剪；文本框通过连接箭头指向标注位置，多个标注重叠时可通过拖动手动避让。

 ## 事件
@@ -580,7 +628,8 @@ X、Y 轴会根据各自完整显示域选择格式：最大绝对值在 `[0.01,
 - `src/index.ts`：组件库公开入口和工具函数导出
 - `src/components/WaveformChart.vue`：图表容器、缩放、tooltip、图例和标注编排
 - `src/components/{core,data,rendering,interaction,annotation}`：数据、布局、渲染和交互模块
- `src/App.vue`：可交互 demo，`src/data` 中提供示例波形数据
+- `src/App.vue`：综合可交互 demo，`src/data` 中提供示例波形数据
+- `src/router.ts`：Demo 路由；`src/views/FixedYDomainDemo.vue` 为固定振幅范围示例

 ## 本地开发

--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
  "name": "waveform-analysis",
-  "version": "0.1.21",
+  "version": "0.1.28",
  "main": "./dist/index.cjs",
  "module": "./dist/index.js",
  "types": "./dist/types/index.d.ts",
@@ -14,6 +14,7 @@
  },
  "files": [
    "dist",
+    "src",
    "README.md"
  ],
  "sideEffects": [
@@ -37,6 +38,7 @@
  "dependencies": {
    "ant-design-vue": "3.2.20",
    "d3": "^7.9.0",
+    "vue-router": "^4.6.4",
    "vue3-colorpicker": "^2.3.0"
  },
  "peerDependencies": {
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -14,6 +14,9 @@ importers:
      d3:
        specifier: ^7.9.0
        version: 7.9.0
+      vue-router:
+        specifier: ^4.6.4
+        version: 4.6.4(vue@3.5.40(typescript@6.0.3))
      vue3-colorpicker:
        specifier: ^2.3.0
        version: 2.3.0(@aesoper/normal-utils@0.1.5)(@popperjs/core@2.11.8)(@vueuse/core@10.11.1(vue@3.5.40(typescript@6.0.3)))(gradient-parser@1.2.0)(lodash-es@4.18.1)(tinycolor2@1.6.0)(vue-types@4.2.1(vue@3.5.40(typescript@6.0.3)))(vue@3.5.40(typescript@6.0.3))
@@ -632,6 +635,9 @@ packages:
  '@vue/compiler-ssr@3.5.40':
    resolution: {integrity: sha512-rrE5xiXG663+vHCHa3J9p2z5OcBRjXmoqenprJxAFQxg5pSshzeBiCE6pu46axapRJ2Adk0YDA2BRZVjiHXnhg==}

+  '@vue/devtools-api@6.6.4':
+    resolution: {integrity: sha512-sGhTPMuXqZ1rVOk32RylztWkfXTRhuS7vgAKv0zjqk8gbsHkJ7xfFf+jbySxt7tWObEJwyKaHMikV/WGDiQm8g==}
+
  '@vue/language-core@3.3.7':
    resolution: {integrity: sha512-LzmkKinXAMMoh8Jfi/jMUSDUjuPdv8mynH5WJGKfXyZtDw3hQ6GBaoI6Bcnl/Xqlu32q/0Z6i/trp4VXykzyLw==}

@@ -1704,6 +1710,11 @@ packages:
    peerDependencies:
      eslint: ^8.57.0 || ^9.0.0 || ^10.0.0

+  vue-router@4.6.4:
+    resolution: {integrity: sha512-Hz9q5sa33Yhduglwz6g9skT8OBPii+4bFn88w6J+J4MfEo4KRRpmiNG/hHHkdbRFlLBOqxN8y8gf2Fb0MTUgVg==}
+    peerDependencies:
+      vue: ^3.5.0
+
  vue-tsc@3.3.7:
    resolution: {integrity: sha512-+C+rgD49wAQ5bUTl2sp5a8Bzg4YoldMNXM+g7CFe604MYcQ8PrZPMQhIjJSzKXtPBCa+C5ayMipqjbA7splekQ==}
    hasBin: true
@@ -2378,6 +2389,8 @@ snapshots:
      '@vue/compiler-dom': 3.5.40
      '@vue/shared': 3.5.40

+  '@vue/devtools-api@6.6.4': {}
+
  '@vue/language-core@3.3.7':
    dependencies:
      '@volar/language-core': 2.4.28
@@ -3386,6 +3399,11 @@ snapshots:
    transitivePeerDependencies:
      - supports-color

+  vue-router@4.6.4(vue@3.5.40(typescript@6.0.3)):
+    dependencies:
+      '@vue/devtools-api': 6.6.4
+      vue: 3.5.40(typescript@6.0.3)
+
  vue-tsc@3.3.7(typescript@6.0.3):
    dependencies:
      '@volar/typescript': 2.4.28
--- a/src/App.test.ts
+++ b/src/App.test.ts
@@ -92,19 +92,22 @@ describe('App workspace layout', { timeout: 20_000 }, () => {
    wrapper.unmount()
  })

-  it('passes clean view and zero-line controls to the chart', async () => {
+  it('passes clean view, presentation mode, and zero-line controls to the chart', async () => {
    const wrapper = mount(App)
    await flushPromises()
    const chart = wrapper.getComponent(WaveformChart)

    expect(chart.props('cleanView')).toBe(false)
+    expect(chart.props('presentationMode')).toBe(false)
    expect(chart.props('zeroLine')).toMatchObject({ visible: false, color: '#98a2b3', width: 1 })

    await wrapper.get('[aria-label="净图模式"]').trigger('click')
+    await wrapper.get('[aria-label="展示模式"]').trigger('click')
    await wrapper.get('[aria-label="显示零值参考线"]').trigger('click')
    await flushPromises()

    expect(chart.props('cleanView')).toBe(true)
+    expect(chart.props('presentationMode')).toBe(true)
    expect(chart.props('zeroLine')).toMatchObject({ visible: true, color: '#98a2b3', width: 1 })
    wrapper.unmount()
  })
--- a/src/App.vue
+++ b/src/App.vue
@@ -43,6 +43,7 @@ const yAxisLineVisible = ref(false)
 const annotations = ref<WaveformAnnotation[]>([])
 const annotationsVisible = ref(true)
 const cleanView = ref(false)
+const presentationMode = ref(false)
 const showTooltip = ref(true)
 const zeroLineVisible = ref(false)
 const zeroLineColor = ref('#98a2b3')
@@ -289,6 +290,7 @@ const controlPanelModel = reactive({
  overlayMode,
  showTooltip,
  cleanView,
+  presentationMode,
  selectedSeriesId,
  selectedLineStyle,
  lineStyleOptions,
@@ -350,6 +352,7 @@ const chartModel = reactive({
  frameStyle,
  axes,
  cleanView,
+  presentationMode,
  showTooltip,
  zeroLine,
  frameWatermarkVisible,
--- a/src/DemoRouterApp.vue
+++ b/src/DemoRouterApp.vue
@@ -0,0 +1,14 @@
+<template>
+  <div class="demo-shell">
+    <header class="demo-shell__header">
+      <RouterLink class="demo-shell__brand" to="/">Waveform Analysis</RouterLink>
+      <nav class="demo-shell__nav" aria-label="示例导航">
+        <RouterLink to="/">综合示例</RouterLink>
+        <RouterLink to="/fixed-y-domain">固定振幅范围</RouterLink>
+      </nav>
+    </header>
+    <div class="demo-shell__content">
+      <RouterView />
+    </div>
+  </div>
+</template>
--- a/src/components/WaveformChart.css
+++ b/src/components/WaveformChart.css
@@ -104,6 +104,11 @@
  cursor: crosshair;
 }

+.waveform-chart--presentation .waveform-chart__overlay {
+  cursor: default;
+  pointer-events: none;
+}
+
 .waveform-chart__label,
 .waveform-chart__empty {
  fill: #595959;
--- a/src/components/WaveformChart.vue
+++ b/src/components/WaveformChart.vue
@@ -26,6 +26,7 @@ const props = withDefaults(defineProps<WaveformChartProps>(), {
  legend: () => ({ position: 'top-right', orientation: 'auto' }),
  defaultHiddenSeriesIds: () => [],
  cleanView: false,
+  presentationMode: false,
  zeroLine: () => ({ visible: false }),
 })
 const emit = defineEmits<WaveformChartEmit>()
--- a/src/components/WaveformChartView.vue
+++ b/src/components/WaveformChartView.vue
@@ -13,6 +13,7 @@ const {
  displayMode,
  activeInteractionMode,
  isCleanView,
+  isPresentationMode,
  selection,
  containerStyle,
  overlayMode,
@@ -45,7 +46,7 @@ const {
  beginSharedViewportDrag,
  finishViewportDrag,
  cancelViewportDrag,
-  clearHover,
+  handlePointerLeave,
  handleAnnotationClick,
  handleAnnotationContextMenu,
  resolveFrameNumber,
@@ -107,12 +108,14 @@ const {
      `waveform-chart--interaction-${activeInteractionMode}`,
      {
        'waveform-chart--clean': isCleanView,
+        'waveform-chart--presentation': isPresentationMode,
        'waveform-chart--panning': selection?.mode === 'pan',
      },
    ]"
    :style="containerStyle"
    :data-display-mode="displayMode"
    :data-interaction-mode="activeInteractionMode"
+    :data-presentation-mode="isPresentationMode"
    :data-overlay-mode="overlayMode"
    :data-chart-left-margin="resolvedChartLeftMargin"
    :data-title-area-height="titleAreaHeight"
@@ -192,8 +195,8 @@ const {
          :ref="setSharedOverlayElement"
          class="waveform-chart__overlay waveform-chart__overlay--shared"
          :class="{
-            'is-zoomable': zoomable && isZoomMode,
-            'is-annotating': activeInteractionMode === 'annotation',
+            'is-zoomable': !isPresentationMode && zoomable && isZoomMode,
+            'is-annotating': !isPresentationMode && activeInteractionMode === 'annotation',
          }"
          :width="innerWidth"
          :height="innerHeight"
@@ -201,7 +204,7 @@ const {
          @pointerdown="beginSharedViewportDrag"
          @pointerup="finishViewportDrag"
          @pointercancel="cancelViewportDrag"
-          @pointerleave="clearHover"
+          @pointerleave="handlePointerLeave"
          @click="handleAnnotationClick"
          @contextmenu="handleAnnotationContextMenu"
        />
@@ -214,6 +217,7 @@ const {
          :clip-path-id="clipPathId"
          :inner-width="innerWidth"
          :zoomable="zoomable"
+          :interactive="!isPresentationMode"
          :display-mode="displayMode"
          :interaction-mode="activeInteractionMode"
          :frame-number="resolveFrameNumber(track.index)"
@@ -227,7 +231,7 @@ const {
          @pointer-down="beginViewportDrag($event, track.index, true)"
          @pointer-up="finishViewportDrag"
          @pointer-cancel="cancelViewportDrag"
-          @pointer-leave="clearHover"
+          @pointer-leave="handlePointerLeave"
          @click="handleAnnotationClick($event, track.index)"
          @contextmenu="handleAnnotationContextMenu($event, track.index)"
        />
@@ -236,7 +240,7 @@ const {
          :state="hoverState"
          :tracks="trackLayouts"
          :clip-path-id="clipPathId"
-          :visible="showTooltip"
+          :visible="showTooltip && !isPresentationMode"
        />

        <rect
@@ -253,6 +257,7 @@ const {
          v-if="!isCleanView"
          :annotations="renderedAnnotations"
          :visible="annotationsVisible"
+          :interactive="!isPresentationMode"
          @contextmenu="handleExistingAnnotationContextMenu"
          @drag-start="beginAnnotationDrag"
          @move="handleAnnotationMove"
@@ -318,7 +323,7 @@ const {
    />

    <WaveformAnnotationEditor
-      v-if="editorDraft && !isCleanView"
+      v-if="editorDraft && !isCleanView && !isPresentationMode"
      :annotation="editorDraft.annotation"
      :mode="editorDraft.mode"
      :series="editorSeries"
@@ -330,7 +335,7 @@ const {
    />

    <WaveformAnnotationContextMenu
-      v-if="!isCleanView"
+      v-if="!isCleanView && !isPresentationMode"
      :visible="contextMenu !== null"
      :x="contextMenu?.x || 0"
      :y="contextMenu?.y || 0"
@@ -342,7 +347,7 @@ const {

    <WaveformHoverHost
      :state="hoverState"
-      :visible="showTooltip"
+      :visible="showTooltip && !isPresentationMode"
      :time-unit="timeUnit"
      :container-width="chartWidth"
      :container-height="chartHeight"
--- a/src/components/annotation/WaveformAnnotationLayer.vue
+++ b/src/components/annotation/WaveformAnnotationLayer.vue
@@ -7,9 +7,12 @@ import { ANNOTATION_TEXT_FONT, ANNOTATION_TEXT_LINE_HEIGHT } from './markup'
 interface Props {
  annotations: RenderedAnnotation[]
  visible: boolean
+  interactive?: boolean
 }

-const props = defineProps<Props>()
+const props = withDefaults(defineProps<Props>(), {
+  interactive: true,
+})
 const emit = defineEmits<{
  (event: 'contextmenu', annotationId: string, mouseEvent: MouseEvent): void
  (event: 'drag-start'): void
@@ -79,7 +82,7 @@ function scheduleDragFrame() {
 }

 function handlePointerDown(rendered: RenderedAnnotation, event: PointerEvent) {
-  if (event.button !== 0 || dragState) return
+  if (!props.interactive || event.button !== 0 || dragState) return
  event.preventDefault()
  event.stopPropagation()
  const target = event.currentTarget as SVGGElement | null
@@ -108,6 +111,7 @@ function handlePointerDown(rendered: RenderedAnnotation, event: PointerEvent) {
 }

 function handlePointerMove(event: PointerEvent) {
+  if (!props.interactive) return
  event.stopPropagation()
  if (!dragState || event.pointerId !== dragState.pointerId) return
  const deltaX = event.clientX - dragState.startX
@@ -119,6 +123,7 @@ function handlePointerMove(event: PointerEvent) {
 }

 function finishPointerDrag(event: PointerEvent) {
+  if (!props.interactive) return
  event.preventDefault()
  event.stopPropagation()
  if (!dragState || event.pointerId !== dragState.pointerId) return
@@ -181,6 +186,11 @@ function handlePointerCancel(event: PointerEvent) {
  event.preventDefault()
  event.stopPropagation()
  if (!dragState || event.pointerId !== dragState.pointerId) return
+  cancelActiveDrag()
+}
+
+function cancelActiveDrag() {
+  if (!dragState) return
  const state = dragState
  dragState = null
  dragOffsets.value = new Map(dragOffsets.value).set(state.annotationId, { x: 0, y: 0 })
@@ -188,10 +198,21 @@ function handlePointerCancel(event: PointerEvent) {
    cancelAnimationFrame(dragFrame)
    dragFrame = null
  }
+  if (state.target.hasPointerCapture(state.pointerId)) {
+    state.target.releasePointerCapture(state.pointerId)
+  }
  emit('drag-end', true)
 }

+watch(
+  () => props.interactive,
+  (interactive) => {
+    if (!interactive) cancelActiveDrag()
+  },
+)
+
 function handleContextMenu(annotationId: string, event: MouseEvent) {
+  if (!props.interactive) return
  event.preventDefault()
  event.stopPropagation()
  // 使用时间戳比较：如果 contextmenu 在拖动结束后 100ms 内触发，则抑制
@@ -206,7 +227,11 @@ function markerId(annotationId: string) {
 </script>

 <template>
-  <g v-if="props.visible" class="waveform-annotation-layer">
+  <g
+    v-if="props.visible"
+    class="waveform-annotation-layer"
+    :class="{ 'waveform-annotation-layer--interactive': props.interactive }"
+  >
    <g
      v-for="rendered in props.annotations"
      :key="rendered.annotation.id"
@@ -281,13 +306,13 @@ function markerId(annotationId: string) {
  pointer-events: none;
 }

-.waveform-annotation {
+.waveform-annotation-layer--interactive .waveform-annotation {
  pointer-events: auto;
  cursor: grab;
  touch-action: none;
 }

-.waveform-annotation:active {
+.waveform-annotation-layer--interactive .waveform-annotation:active {
  cursor: grabbing;
 }

@@ -300,6 +325,9 @@ function markerId(annotationId: string) {
 .waveform-annotation__box {
  stroke-width: 1;
  rx: 3;
+}
+
+.waveform-annotation-layer--interactive .waveform-annotation__box {
  pointer-events: auto;
 }

--- a/src/components/annotation/useWaveformChartAnnotations.ts
+++ b/src/components/annotation/useWaveformChartAnnotations.ts
@@ -38,6 +38,7 @@ interface AnnotationContext {
  titleAreaHeight: ComputedRef<number>
  chartTopMargin: ComputedRef<number>
  activeInteractionMode: ComputedRef<WaveformInteractionMode | undefined>
+  isPresentationMode: ComputedRef<boolean>
 }

 interface AnnotationCandidateContext {
@@ -75,6 +76,7 @@ export function useWaveformChartAnnotations(context: AnnotationContext) {
    titleAreaHeight,
    chartTopMargin,
    activeInteractionMode,
+    isPresentationMode,
  } = context

  function toggleSeriesVisibility(seriesId: string) {
@@ -140,6 +142,7 @@ export function useWaveformChartAnnotations(context: AnnotationContext) {
  }

  function changeDraftSeries(seriesId: string) {
+    if (isPresentationMode.value) return
    const draft = annotationInteraction.editorDraft.value
    const candidate = editorSeriesOptions.value.find((item) => item.seriesId === seriesId)
    const track = trackLayouts.value.find((item) =>
@@ -216,7 +219,13 @@ export function useWaveformChartAnnotations(context: AnnotationContext) {
  }

  function handleAnnotationClick(event: MouseEvent, trackIndex?: number) {
-    if (!props.annotationsVisible || activeInteractionMode.value !== 'annotation') return
+    if (
+      isPresentationMode.value ||
+      !props.annotationsVisible ||
+      activeInteractionMode.value !== 'annotation'
+    ) {
+      return
+    }
    const candidateContext = resolveAnnotationCandidates(event, trackIndex)
    if (!candidateContext) return
    const nearby = nearbyCandidates(candidateContext.candidates)
@@ -238,7 +247,7 @@ export function useWaveformChartAnnotations(context: AnnotationContext) {
  }

  function handleAnnotationContextMenu(event: MouseEvent, trackIndex?: number) {
-    if (!props.annotationsVisible) return
+    if (isPresentationMode.value || !props.annotationsVisible) return
    event.preventDefault()
    event.stopPropagation()
    const candidateContext = resolveAnnotationCandidates(event, trackIndex)
@@ -252,7 +261,7 @@ export function useWaveformChartAnnotations(context: AnnotationContext) {
  }

  function handleExistingAnnotationContextMenu(annotationId: string, event: MouseEvent) {
-    if (!props.annotationsVisible || !container.value) return
+    if (isPresentationMode.value || !props.annotationsVisible || !container.value) return
    editorSeriesOptions.value = []
    const annotation = props.annotations.find((item) => item.id === annotationId)
    if (!annotation) return
@@ -270,6 +279,7 @@ export function useWaveformChartAnnotations(context: AnnotationContext) {
  }

  function handleAnnotationMove(annotationId: string, offsetX: number, offsetY: number) {
+    if (isPresentationMode.value) return
    const annotation = props.annotations.find((item) => item.id === annotationId)
    if (!annotation || !Number.isFinite(offsetX) || !Number.isFinite(offsetY)) return
    emit(
@@ -281,6 +291,7 @@ export function useWaveformChartAnnotations(context: AnnotationContext) {
  }

  function editContextAnnotation() {
+    if (isPresentationMode.value) return
    const menu = annotationInteraction.contextMenu.value
    const annotation = props.annotations.find((item) => item.id === menu?.annotationId)
    if (!annotation) return
@@ -302,6 +313,7 @@ export function useWaveformChartAnnotations(context: AnnotationContext) {
  }

  function deleteContextAnnotation() {
+    if (isPresentationMode.value) return
    const annotationId = annotationInteraction.contextMenu.value?.annotationId
    const annotation = props.annotations.find((item) => item.id === annotationId)
    if (!annotation) return
@@ -314,6 +326,7 @@ export function useWaveformChartAnnotations(context: AnnotationContext) {
  }

  function confirmAnnotation(annotation: WaveformAnnotation) {
+    if (isPresentationMode.value) return
    const draft = annotationInteraction.editorDraft.value
    if (!draft) return
    if (draft.mode === 'add') {
--- a/src/components/core/fixedYDomainLayout.test.ts
+++ b/src/components/core/fixedYDomainLayout.test.ts
@@ -0,0 +1,116 @@
+import { zoomIdentity } from 'd3'
+import { describe, expect, it } from 'vitest'
+
+import { DEFAULT_WAVEFORM_RENDERING_OPTIONS } from '../../core'
+import type { DisplaySeries, DisplayTrack } from './types'
+import { buildTrackLayouts, resolveYAxisSeriesGroups } from './layout'
+
+function series(id: string, minimum: number, maximum: number): DisplaySeries {
+  return {
+    id,
+    name: id,
+    color: '#1677ff',
+    lineType: 'linear',
+    lineStyle: 'solid',
+    pointType: 'none',
+    errorBar: { visible: false, width: 1.5, capWidth: 8 },
+    points: [
+      { x: 0, y: minimum },
+      { x: 1, y: maximum },
+    ],
+    xDomain: [0, 1],
+    yDomain: [minimum, maximum],
+    hasErrorPoints: false,
+  }
+}
+
+function track(seriesList: DisplaySeries[]): DisplayTrack {
+  return {
+    id: 'track',
+    series: seriesList,
+    visibleSeries: seriesList,
+    xDomain: [0, 1],
+    yDomain: [0, 100],
+  }
+}
+
+describe('fixed Y-domain layout', () => {
+  it('uses an exact global fixed domain without applying nice bounds', () => {
+    const sourceTrack = track([series('a', 0, 100)])
+    const result = buildTrackLayouts({
+      cells: [
+        {
+          slotIndex: 0,
+          row: 0,
+          column: 0,
+          left: 0,
+          top: 0,
+          width: 120,
+          height: 100,
+          plotHeight: 100,
+          cellHeight: 130,
+          xAxisBand: 30,
+          series: sourceTrack,
+        },
+      ],
+      grid: { rowCount: 1, columnCount: 1, showPagination: false, trackLines: {} },
+      displayMode: 'independent',
+      overlayMode: 'single-axis',
+      independentTransforms: [zoomIdentity],
+      sharedZoomDomain: [0, 1],
+      fixedYDomain: [3, 97],
+      timeUnit: 'ms',
+      rendering: DEFAULT_WAVEFORM_RENDERING_OPTIONS,
+      hideSecondaryLabels: false,
+      yAxisLabelX: -50,
+      showCompactEmptyTracks: false,
+    })[0]
+
+    expect(result?.yScale.domain()).toEqual([3, 97])
+    expect(result?.yAxes[0]?.tickValues).toContain(3)
+    expect(result?.yAxes[0]?.tickValues).toContain(97)
+    expect(result?.seriesPaths[0]?.yScale.domain()).toEqual([3, 97])
+  })
+
+  it('resolves track, series, and global fixed-domain precedence', () => {
+    const sourceTrack = track([series('a', 0, 10), series('b', 20, 30)])
+
+    expect(
+      resolveYAxisSeriesGroups(sourceTrack, 'single-axis', [-5, 5], {
+        a: [-10, 10],
+        track: [300, 100],
+      })[0]?.domain,
+    ).toEqual([100, 300])
+
+    expect(
+      resolveYAxisSeriesGroups(sourceTrack, 'single-axis', [-5, 5], {
+        a: [-10, 10],
+      })[0]?.domain,
+    ).toEqual([-10, 10])
+  })
+
+  it('keeps per-series fixed domains on separate axes and merges axis overflow', () => {
+    const sourceTrack = track([
+      series('a', 0, 1),
+      series('b', 10, 11),
+      series('c', 20, 21),
+      series('d', 30, 31),
+      series('e', 40, 41),
+    ])
+    const groups = resolveYAxisSeriesGroups(sourceTrack, 'multi-axis', undefined, {
+      a: [-1, 1],
+      b: [-2, 2],
+      c: [-3, 3],
+      d: [-4, 4],
+      e: [-5, 5],
+    })
+
+    expect(groups.map((group) => group.domain)).toEqual([
+      [-1, 1],
+      [-2, 2],
+      [-3, 3],
+      [-5, 5],
+    ])
+    expect(groups.every((group) => group.fixed)).toBe(true)
+  })
+})
--- a/src/components/core/layout.test.ts
+++ b/src/components/core/layout.test.ts
@@ -192,7 +192,7 @@ describe('multi-value Y-axis grouping', () => {
    ])
  })

-  it('places left and right scientific exponents eight pixels outside their tick labels', () => {
+  it('reserves label clearance for exponent-prefixed ticks on both axis sides', () => {
    const layout = buildTrackLayouts({
      cells: [
        {
@@ -206,7 +206,7 @@ describe('multi-value Y-axis grouping', () => {
          plotHeight: 300,
          cellHeight: 330,
          xAxisBand: 30,
-          series: track([series('left', 0, 254), series('right', 0, 254)]),
+          series: track([series('left', 1000, 3000), series('right', 1000, 3000)]),
        },
      ],
      grid: { rowCount: 1, columnCount: 1, showPagination: false, trackLines: {} },
@@ -222,14 +222,13 @@ describe('multi-value Y-axis grouping', () => {
    })[0]

    expect(
-      layout?.yAxes.map(({ side, x, exponentX, exponentLabel }) => ({
+      layout?.yAxes.map(({ side, x, labelX }) => ({
        side,
-        offset: Math.abs(exponentX - x),
-        exponentLabel,
+        labelOffset: Math.abs(labelX - x),
      })),
    ).toEqual([
-      { side: 'left', offset: 43, exponentLabel: 'E+02' },
-      { side: 'right', offset: 43, exponentLabel: 'E+02' },
+      { side: 'left', labelOffset: 67 },
+      { side: 'right', labelOffset: 67 },
    ])
  })

@@ -237,7 +236,7 @@ describe('multi-value Y-axis grouping', () => {
    const [group] = buildYAxisSeriesGroups(track([series('long', -1e120, 1e120)]), 'multi-axis')

    expect(group).toBeDefined()
-    expect(measureYAxisGroupClearance(group!)).toBe(119)
+    expect(measureYAxisGroupClearance(group!)).toBe(90)
  })
 })

--- a/src/components/core/layout.ts
+++ b/src/components/core/layout.ts
@@ -1,12 +1,18 @@
 import { scaleLinear } from 'd3'

 import type { WaveformOverlayMode } from '../../types'
-import { formatScientificAxisExponent, formatScientificAxisLabel, paddedDomain } from '../../utils'
+import { formatScientificAxisLabel, paddedDomain } from '../../utils'
 import type { DisplaySeries, DisplayTrack, TrackLayout } from './types'
-import { MAX_MULTI_Y_AXIS_COUNT, Y_AXIS_EXPONENT_GAP } from './constants'
+import { MAX_MULTI_Y_AXIS_COUNT } from './constants'
+import {
+  mergeYDomains,
+  resolveSeriesFixedYDomain,
+  resolveTrackFixedYDomain,
+  type WaveformYDomain,
+} from './yDomain'

 // 导出常量供外部使用
-export { MAX_MULTI_Y_AXIS_COUNT, Y_AXIS_EXPONENT_GAP } from './constants'
+export { MAX_MULTI_Y_AXIS_COUNT } from './constants'

 const Y_AXIS_CHARACTER_WIDTH = 7
 const Y_AXIS_TICK_PADDING = 7
@@ -14,11 +20,12 @@ const Y_AXIS_OUTER_PADDING = 4
 const Y_AXIS_LABEL_GAP = 6
 const Y_AXIS_LABEL_BAND_WIDTH = 24

-interface YAxisSeriesGroup {
+export interface YAxisSeriesGroup {
  index: number
  side: 'left' | 'right'
  seriesList: DisplaySeries[]
  domain: [number, number]
+  fixed: boolean
 }

 function resolveAxisSides(axisCount: number): Array<'left' | 'right'> {
@@ -53,6 +60,7 @@ export function buildYAxisSeriesGroups(
    side: sides[index],
    seriesList: [] as DisplaySeries[],
    domain: [0, 1] as [number, number],
+    fixed: false,
  }))

  track.visibleSeries.forEach((series, index) => {
@@ -72,35 +80,49 @@ export function buildYAxisSeriesGroups(
  return grouped
 }

-export function axisTextMetrics(domain: [number, number]): {
-  exponentLabel: string | null
-  exponentWidth: number
-  tickTextWidth: number
-} {
-  const scale = scaleLinear(domain, [1, 0]).nice()
+export function resolveYAxisSeriesGroups(
+  track: DisplayTrack,
+  overlayMode: WaveformOverlayMode,
+  yDomain?: WaveformYDomain,
+  yDomains?: Record<string, WaveformYDomain>,
+): YAxisSeriesGroup[] {
+  const trackDomain = resolveTrackFixedYDomain(track, yDomains)
+  return buildYAxisSeriesGroups(track, overlayMode).map((group) => {
+    if (trackDomain) return { ...group, domain: trackDomain, fixed: true }
+    const seriesDomains = group.seriesList.map(
+      (series) => resolveSeriesFixedYDomain(series, yDomain, yDomains) ?? series.yDomain,
+    )
+    const fixed = group.seriesList.some((series) =>
+      resolveSeriesFixedYDomain(series, yDomain, yDomains),
+    )
+    return fixed ? { ...group, domain: mergeYDomains(seriesDomains), fixed } : group
+  })
+}
+
+export function axisTextMetrics(
+  domain: [number, number],
+  nice = true,
+  tickValues?: number[],
+): { tickTextWidth: number } {
+  const scale = scaleLinear(domain, [1, 0])
+  if (nice) scale.nice()
  const [axisMin, axisMax] = scale.domain()
-  const values = scale.ticks(10)
+  const values = tickValues ?? Array.from(new Set([axisMin, ...scale.ticks(10), axisMax]))
+  const topTickValue = Math.max(...values)
  const maximumTickCharacters = Math.max(
    1,
-    ...values.map((value) => formatScientificAxisLabel(value, { axisMin, axisMax }).length),
+    ...values.map(
+      (value) => formatScientificAxisLabel(value, { axisMin, axisMax, topTickValue }).length,
+    ),
  )
-  const exponentLabel = formatScientificAxisExponent(axisMin, axisMax)
  return {
-    exponentLabel,
-    exponentWidth: exponentLabel ? exponentLabel.length * Y_AXIS_CHARACTER_WIDTH : 0,
    tickTextWidth: maximumTickCharacters * Y_AXIS_CHARACTER_WIDTH,
  }
 }

-function axisExponentClearance(domain: [number, number]): number {
-  const { exponentLabel, exponentWidth } = axisTextMetrics(domain)
-  return exponentLabel ? exponentWidth + Y_AXIS_EXPONENT_GAP : 0
-}
-
 export function measureYAxisGroupClearance(group: YAxisSeriesGroup): number {
  return (
-    axisTextMetrics(group.domain).tickTextWidth +
-    axisExponentClearance(group.domain) +
+    axisTextMetrics(group.domain, !group.fixed).tickTextWidth +
    Y_AXIS_TICK_PADDING +
    Y_AXIS_LABEL_GAP +
    Y_AXIS_LABEL_BAND_WIDTH +
@@ -110,8 +132,7 @@ export function measureYAxisGroupClearance(group: YAxisSeriesGroup): number {

 function measureYAxisGroupTickClearance(group: YAxisSeriesGroup): number {
  return (
-    axisTextMetrics(group.domain).tickTextWidth +
-    axisExponentClearance(group.domain) +
+    axisTextMetrics(group.domain, !group.fixed).tickTextWidth +
    Y_AXIS_TICK_PADDING +
    Y_AXIS_OUTER_PADDING
  )
@@ -120,8 +141,10 @@ function measureYAxisGroupTickClearance(group: YAxisSeriesGroup): number {
 export function measureTrackYAxisClearance(
  track: DisplayTrack,
  overlayMode: WaveformOverlayMode,
+  yDomain?: WaveformYDomain,
+  yDomains?: Record<string, WaveformYDomain>,
 ): { left: number; right: number } {
-  return buildYAxisSeriesGroups(track, overlayMode).reduce(
+  return resolveYAxisSeriesGroups(track, overlayMode, yDomain, yDomains).reduce(
    (clearance, group) => {
      clearance[group.side] +=
        overlayMode === 'multi-axis' || track.visibleSeries.length === 1
--- a/src/components/core/trackLayoutBuilder.ts
+++ b/src/components/core/trackLayoutBuilder.ts
@@ -13,15 +13,14 @@ import {
  type ResolvedWaveformRenderingOptions,
 } from '../../core/rendering'
 import type { WaveformDisplayMode, WaveformOverlayMode, WaveformPoint } from '../../types'
-import { buildMinorTicks, formatAxisTimeExponent, formatEndpointTime } from '../../utils'
+import { buildMinorTicks, formatEndpointTime } from '../../utils'
 import {
  getBottomRowCellIndexes,
  type GridCellGeometry,
  type NormalizedWaveformGridOptions,
 } from './grid'
-import { axisTextMetrics, buildYAxisSeriesGroups } from './layout'
+import { axisTextMetrics, resolveYAxisSeriesGroups } from './layout'
 import type { DisplaySeries, DisplayTrack, TrackLayout, WaveformYAxisLayout } from './types'
-import { Y_AXIS_EXPONENT_GAP } from './constants'
 import {
  Y_AXIS_LABEL_BAND_WIDTH,
  Y_AXIS_LABEL_GAP,
@@ -42,6 +41,8 @@ export interface BuildTrackLayoutsOptions {
  sharedZoomDomain: [number, number]
  initialXDomain?: [number, number]
  initialXDomains?: Record<string, [number, number]>
+  fixedYDomain?: [number, number]
+  fixedYDomains?: Record<string, [number, number]>
  yDomains?: Record<string, [number, number]>
  timeUnit: 's' | 'ms'
  rendering: ResolvedWaveformRenderingOptions
@@ -84,6 +85,7 @@ export function buildTrackLayouts(options: BuildTrackLayoutsOptions): TrackLayou
        ? scaleLinear(
            options.initialXDomains?.[displayTrack.id] ??
              options.initialXDomains?.[series.id] ??
+              options.initialXDomain ??
              displayTrack.xDomain,
            [0, cell.width],
          )
@@ -94,13 +96,18 @@ export function buildTrackLayouts(options: BuildTrackLayoutsOptions): TrackLayou
        : zoomIdentity
    const xScale = transform.rescaleX(baseXScale)
    const configuredYDomain = options.yDomains?.[displayTrack.id]
-    const yAxisGroups = buildYAxisSeriesGroups(displayTrack, options.overlayMode).map((group) => ({
-      ...group,
-      domain: configuredYDomain ?? group.domain,
-    }))
+    const yAxisGroups = resolveYAxisSeriesGroups(
+      displayTrack,
+      options.overlayMode,
+      options.fixedYDomain,
+      options.fixedYDomains,
+    ).map((group) =>
+      !group.fixed && configuredYDomain ? { ...group, domain: configuredYDomain } : group,
+    )
    const sideOffsets = { left: 0, right: 0 }
    const yAxes: WaveformYAxisLayout[] = yAxisGroups.map((group) => {
-      const scale = scaleLinear(group.domain, [cell.plotHeight, 0]).nice()
+      const scale = scaleLinear(group.domain, [cell.plotHeight, 0])
+      if (!group.fixed) scale.nice()
      const majorTicks = scale.ticks(Math.max(2, Math.floor(cell.plotHeight / 55)))
      const [axisStart, axisEnd] = scale.domain()
      const showAxisEnd = options.displayMode !== 'compact' || cell.row === 0
@@ -110,28 +117,16 @@ export function buildTrackLayouts(options: BuildTrackLayoutsOptions): TrackLayou
      const tickValues = Array.from(
        new Set([axisStart, ...visibleMajorTicks, ...(showAxisEnd ? [axisEnd] : [])]),
      )
-      const { exponentLabel, exponentWidth, tickTextWidth } = axisTextMetrics(group.domain)
-      const exponentClearance = exponentLabel ? exponentWidth + Y_AXIS_EXPONENT_GAP : 0
+      const { tickTextWidth } = axisTextMetrics(group.domain, !group.fixed, tickValues)
      const clearance =
        tickTextWidth +
        Y_AXIS_TICK_PADDING +
-        exponentClearance +
        Y_AXIS_LABEL_GAP +
        Y_AXIS_LABEL_BAND_WIDTH +
        Y_AXIS_OUTER_PADDING
      const x = group.side === 'left' ? -sideOffsets.left : cell.width + sideOffsets.right
-      const exponentX =
-        x +
-        (group.side === 'left'
-          ? -(Y_AXIS_TICK_PADDING + tickTextWidth + Y_AXIS_EXPONENT_GAP)
-          : Y_AXIS_TICK_PADDING + tickTextWidth + Y_AXIS_EXPONENT_GAP)
      const labelDistance =
-        tickTextWidth +
-        Y_AXIS_TICK_PADDING +
-        exponentClearance +
-        exponentWidth +
-        Y_AXIS_LABEL_GAP +
-        Y_AXIS_LABEL_BAND_WIDTH / 2
+        tickTextWidth + Y_AXIS_TICK_PADDING + Y_AXIS_LABEL_GAP + Y_AXIS_LABEL_BAND_WIDTH / 2
      const labelX = x + (group.side === 'left' ? -labelDistance : labelDistance)
      sideOffsets[group.side] += clearance
      return {
@@ -139,8 +134,6 @@ export function buildTrackLayouts(options: BuildTrackLayoutsOptions): TrackLayou
        side: group.side,
        x,
        labelX,
-        exponentX,
-        exponentLabel,
        scale,
        majorTicks,
        minorTicks: buildMinorTicks(majorTicks),
@@ -157,7 +150,6 @@ export function buildTrackLayouts(options: BuildTrackLayoutsOptions): TrackLayou
      start: formatEndpointTime(domain[0], domain, options.timeUnit),
      end: formatEndpointTime(domain[1], domain, options.timeUnit),
    }
-    const xAxisExponent = formatAxisTimeExponent(domain, options.timeUnit)
    const leftClearance = endpointLabels.start.length * 7 + 10
    const rightClearance = endpointLabels.end.length * 7 + 10
    const xAxisTickValues = xMajorTicks.filter((tick) => {
@@ -224,7 +216,6 @@ export function buildTrackLayouts(options: BuildTrackLayoutsOptions): TrackLayou
      yAxisTickValues,
      xAxisTickValues,
      endpointLabels,
-      xAxisExponent,
      path: seriesPaths[0]?.path ?? null,
      seriesPaths,
      gridLines: options.grid.trackLines[displayTrack.id] ?? {
--- a/src/components/core/types.ts
+++ b/src/components/core/types.ts
@@ -51,8 +51,6 @@ export interface WaveformYAxisLayout {
  side: 'left' | 'right'
  x: number
  labelX: number
-  exponentX: number
-  exponentLabel: string | null
  scale: ScaleLinear<number, number>
  majorTicks: number[]
  minorTicks: number[]
@@ -109,7 +107,6 @@ export interface TrackLayout {
  yAxisTickValues: number[]
  xAxisTickValues: number[]
  endpointLabels: { start: string; end: string }
-  xAxisExponent: string | null
  path: string | null
  seriesPaths: TrackSeriesPath[]
  showXAxis: boolean
--- a/src/components/core/useWaveformChartController.ts
+++ b/src/components/core/useWaveformChartController.ts
@@ -6,6 +6,7 @@ import {
  shallowReactive,
  shallowRef,
  toRefs,
+  watch,
  watchEffect,
  type ComponentPublicInstance,
  type Ref,
@@ -68,6 +69,15 @@ export function useWaveformChartController(
  const annotationInteraction = useWaveformAnnotationInteraction()
  const editorSeriesOptions = ref<AnnotationSeriesCandidate[]>([])
  const hoverThrottle = useAnimationFrameThrottle()
+
+  watch(
+    [() => props.yDomain, () => props.yDomains],
+    () => {
+      sharedYDomains.value = {}
+      independentYDomains.value = {}
+    },
+    { deep: true },
+  )
  const selection = ref<ViewportSelectionState | null>(null)
  const spacePressed = ref(false)
  const pointerInsideChart = ref(false)
@@ -90,6 +100,7 @@ export function useWaveformChartController(
    chartWidth,
    chartHeight,
    isCleanView,
+    isPresentationMode,
    hiddenSeriesIdSet,
    resolvedTitleText,
    titleAreaReserved,
@@ -151,6 +162,7 @@ export function useWaveformChartController(
    innerHeight,
    hasChartArea,
    isZoomMode,
+    isPresentationMode,
    resolveInitialTrackDomain,
    cancelPendingHover: () => hover.cancelPendingHover(),
  })
@@ -174,6 +186,7 @@ export function useWaveformChartController(
    titleAreaHeight,
    chartTopMargin,
    activeInteractionMode,
+    isPresentationMode,
  })

  const viewport = useWaveformViewport({
@@ -192,6 +205,7 @@ export function useWaveformChartController(
    sharedYDomains,
    independentYDomains,
    isZoomMode,
+    isPresentationMode,
    editorSeriesOptions,
    resolveInitialTrackDomain,
    canZoomTrack: zoom.canZoomTrack,
@@ -214,6 +228,7 @@ export function useWaveformChartController(
    titleAreaHeight,
    chartTopMargin,
    sharedOverlayElement,
+    isPresentationMode,
    updateViewportDrag: viewport.updateViewportDrag,
    resolveTrackAtPointer: annotations.resolveTrackAtPointer,
  })
@@ -248,10 +263,12 @@ export function useWaveformChartController(
    independentYDomains,
    annotationInteraction,
    editorSeriesOptions,
+    isPresentationMode,
    clearHover: hover.clearHover,
    cancelAnnotation: annotations.cancelAnnotation,
    configureZoom: zoom.configureZoom,
    resetViewport: viewport.resetViewport,
+    cancelViewportDrag: viewport.cancelViewportDrag,
    cancelPendingHover: hover.cancelPendingHover,
    clearZoomBindings: zoom.clearZoomBindings,
  })
--- a/src/components/core/useWaveformChartLifecycle.ts
+++ b/src/components/core/useWaveformChartLifecycle.ts
@@ -44,10 +44,12 @@ interface LifecycleContext {
  independentYDomains: Ref<Record<number, [number, number]>>
  annotationInteraction: ReturnType<typeof useWaveformAnnotationInteraction>
  editorSeriesOptions: Ref<AnnotationSeriesCandidate[]>
+  isPresentationMode: ComputedRef<boolean>
  clearHover: () => void
  cancelAnnotation: () => void
  configureZoom: () => void
  resetViewport: () => void
+  cancelViewportDrag: () => void
  cancelPendingHover: () => void
  clearZoomBindings: () => void
 }
@@ -94,16 +96,25 @@ export function useWaveformChartLifecycle(context: LifecycleContext) {
    independentYDomains,
    annotationInteraction,
    editorSeriesOptions,
+    isPresentationMode,
    clearHover,
    cancelAnnotation,
    configureZoom,
    resetViewport,
+    cancelViewportDrag,
    cancelPendingHover,
    clearZoomBindings,
  } = context

  function handleInteractionKeyDown(event: KeyboardEvent) {
-    if (event.code !== 'Space' || !props.pannable || !pointerInsideChart.value) return
+    if (
+      isPresentationMode.value ||
+      event.code !== 'Space' ||
+      !props.pannable ||
+      !pointerInsideChart.value
+    ) {
+      return
+    }
    if (isEditableTarget(event.target)) return
    spacePressed.value = true
    event.preventDefault()
@@ -145,6 +156,7 @@ export function useWaveformChartLifecycle(context: LifecycleContext) {
      innerWidth,
      innerHeight,
      () => props.zoomable,
+      isPresentationMode,
      () => props.minZoomSpan,
      () => props.initialXDomain,
      () => props.initialXDomains,
@@ -191,6 +203,16 @@ export function useWaveformChartLifecycle(context: LifecycleContext) {
    editorSeriesOptions.value = []
  })

+  watch(isPresentationMode, (enabled) => {
+    spacePressed.value = false
+    if (!enabled) return
+    cancelViewportDrag()
+    clearZoomBindings()
+    clearHover()
+    annotationInteraction.closeContextMenu()
+    cancelAnnotation()
+  })
+
  watch(
    () => chartSeries.value.map((series) => series.id).join('\u0000'),
    () => {
--- a/src/components/core/useWaveformLayout.ts
+++ b/src/components/core/useWaveformLayout.ts
@@ -2,7 +2,7 @@ import { scaleLinear, type ZoomTransform } from 'd3'
 import { computed, type ComputedRef, type Ref, type ShallowRef } from 'vue'

 import { resolveWaveformRenderingOptions } from '../../core'
-import { formatScientificAxisExponent, formatScientificAxisLabel, paddedDomain } from '../../utils'
+import { paddedDomain } from '../../utils'
 import {
  layoutAnnotations,
  type AnnotationSeriesInfo,
@@ -26,7 +26,12 @@ import {
  resolveGridCellGeometry,
  X_AXIS_BAND,
 } from './grid'
-import { buildTrackLayouts, measureTrackYAxisClearance, Y_AXIS_EXPONENT_GAP } from './layout'
+import {
+  buildTrackLayouts,
+  axisTextMetrics,
+  measureTrackYAxisClearance,
+  resolveYAxisSeriesGroups,
+} from './layout'
 import type { DisplaySeries, DisplayTrack, TrackLayout } from './types'
 import type { PreparedWaveformSeries } from './useWaveformData'
 import type { ResolvedWaveformChartProps } from './waveformChartTypes'
@@ -104,39 +109,21 @@ export function useWaveformLayout(context: LayoutContext) {
  const yAxisMetrics = computed(() => {
    const axisText = chartTracks.value
      .filter((track) => track.visibleSeries.length > 0)
-      .map((track) => {
-        const scale = scaleLinear(track.yDomain, [1, 0]).nice()
-        const [axisMin, axisMax] = scale.domain()
-        return {
-          exponentLabel: formatScientificAxisExponent(axisMin, axisMax),
-          tickLabels: scale
-            .ticks(10)
-            .map((value) => formatScientificAxisLabel(value, { axisMin, axisMax })),
-        }
-      })
-    const maximumCharacters = Math.max(
-      1,
-      ...axisText.flatMap(({ tickLabels }) => tickLabels).map((label) => label.length),
-    )
-    const tickTextWidth = maximumCharacters * Y_AXIS_CHARACTER_WIDTH
-    const maximumExponentWidth = Math.max(
-      0,
-      ...axisText.map(({ exponentLabel }) => (exponentLabel?.length ?? 0) * Y_AXIS_CHARACTER_WIDTH),
-    )
-    const exponentClearance = maximumExponentWidth ? maximumExponentWidth + Y_AXIS_EXPONENT_GAP : 0
-    const tickClearance =
-      tickTextWidth + Y_AXIS_TICK_PADDING + exponentClearance + Y_AXIS_OUTER_PADDING
+      .flatMap((track) =>
+        resolveYAxisSeriesGroups(track, props.overlayMode, props.yDomain, props.yDomains),
+      )
+      .map((group) => axisTextMetrics(group.domain, !group.fixed).tickTextWidth)
+    const tickTextWidth = Math.max(Y_AXIS_CHARACTER_WIDTH, ...axisText)
+    const tickClearance = tickTextWidth + Y_AXIS_TICK_PADDING + Y_AXIS_OUTER_PADDING
    const labelCenterX = -(
      Y_AXIS_TICK_PADDING +
      tickTextWidth +
-      exponentClearance +
      Y_AXIS_LABEL_GAP +
      Y_AXIS_LABEL_BAND_WIDTH / 2
    )
    const fullClearance =
      tickTextWidth +
      Y_AXIS_TICK_PADDING +
-      exponentClearance +
      Y_AXIS_LABEL_GAP +
      Y_AXIS_LABEL_BAND_WIDTH +
      Y_AXIS_OUTER_PADDING
@@ -165,7 +152,12 @@ export function useWaveformLayout(context: LayoutContext) {
  const multiAxisClearance = computed(() =>
    chartTracks.value.reduce(
      (maximum, track) => {
-        const clearance = measureTrackYAxisClearance(track, props.overlayMode)
+        const clearance = measureTrackYAxisClearance(
+          track,
+          props.overlayMode,
+          props.yDomain,
+          props.yDomains,
+        )
        return {
          left: Math.max(maximum.left, clearance.left),
          right: Math.max(maximum.right, clearance.right),
@@ -281,6 +273,8 @@ export function useWaveformLayout(context: LayoutContext) {
      sharedZoomDomain: sharedZoomDomain.value,
      initialXDomain: props.initialXDomain ? initialXDomain.value : undefined,
      initialXDomains: props.initialXDomains,
+      fixedYDomain: props.yDomain,
+      fixedYDomains: props.yDomains,
      yDomains:
        props.displayMode === 'independent'
          ? Object.fromEntries(
--- a/src/components/core/useWaveformPresentation.ts
+++ b/src/components/core/useWaveformPresentation.ts
@@ -49,6 +49,7 @@ export function useWaveformPresentation(context: PresentationContext) {
    height: fixedHeight.value === undefined ? '100%' : `${fixedHeight.value}px`,
  }))
  const isCleanView = computed(() => props.cleanView === true)
+  const isPresentationMode = computed(() => props.presentationMode === true)
  const resolvedZeroLine = computed(() => {
    const width = props.zeroLine.width
    return {
@@ -178,6 +179,7 @@ export function useWaveformPresentation(context: PresentationContext) {
    chartHeight,
    containerStyle,
    isCleanView,
+    isPresentationMode,
    resolvedZeroLine,
    legendBackgroundColor,
    legendInteractive,
--- a/src/components/core/waveformChartTypes.ts
+++ b/src/components/core/waveformChartTypes.ts
@@ -31,6 +31,8 @@ export interface WaveformChartProps {
  minVisiblePoints?: number
  initialXDomain?: [number, number]
  initialXDomains?: Record<string, [number, number]>
+  yDomain?: [number, number]
+  yDomains?: Record<string, [number, number]>
  timeUnit?: 's' | 'ms'
  frameNumber?: string | number
  frameStyle?: WaveformFrameStyle
@@ -45,6 +47,7 @@ export interface WaveformChartProps {
  hiddenSeriesIds?: string[]
  defaultHiddenSeriesIds?: string[]
  cleanView?: boolean
+  presentationMode?: boolean
  zeroLine?: WaveformZeroLineOptions
 }

@@ -65,6 +68,7 @@ type DefaultedProp =
  | 'legend'
  | 'defaultHiddenSeriesIds'
  | 'cleanView'
+  | 'presentationMode'
  | 'zeroLine'

 export type ResolvedWaveformChartProps = Readonly<
--- a/src/components/core/yDomain.test.ts
+++ b/src/components/core/yDomain.test.ts
@@ -0,0 +1,56 @@
+import { describe, expect, it } from 'vitest'
+
+import type { DisplayTrack } from './types'
+import { hasFixedYDomainForTrack, mergeYDomains, normalizeYDomain } from './yDomain'
+
+const track: DisplayTrack = {
+  id: 'shared-track',
+  series: [],
+  visibleSeries: [
+    {
+      id: 'channel-a',
+      name: 'A',
+      color: '#1677ff',
+      lineType: 'linear',
+      lineStyle: 'solid',
+      pointType: 'none',
+      errorBar: { visible: false, width: 1.5, capWidth: 8 },
+      points: [],
+      xDomain: [0, 1],
+      yDomain: [0, 1],
+      hasErrorPoints: false,
+    },
+  ],
+  xDomain: [0, 1],
+  yDomain: [0, 1],
+}
+
+describe('fixed Y domains', () => {
+  it('normalizes valid reversed domains', () => {
+    expect(normalizeYDomain([97, 3])).toEqual([3, 97])
+    expect(normalizeYDomain([-10, 10])).toEqual([-10, 10])
+  })
+
+  it.each([undefined, [1, 1], [Number.NaN, 1], [0, Number.POSITIVE_INFINITY]])(
+    'rejects an invalid domain: %j',
+    (domain) => {
+      expect(normalizeYDomain(domain as [number, number] | undefined)).toBeUndefined()
+    },
+  )
+
+  it('detects valid track, series, and global configuration only', () => {
+    expect(hasFixedYDomainForTrack(track, [-1, 1])).toBe(true)
+    expect(hasFixedYDomainForTrack(track, undefined, { 'shared-track': [-2, 2] })).toBe(true)
+    expect(hasFixedYDomainForTrack(track, undefined, { 'channel-a': [-3, 3] })).toBe(true)
+    expect(hasFixedYDomainForTrack(track, [0, 0], { 'channel-a': [1, 1] })).toBe(false)
+  })
+
+  it('merges configured and automatic series domains without padding', () => {
+    expect(
+      mergeYDomains([
+        [3, 97],
+        [-20, 40],
+      ]),
+    ).toEqual([-20, 97])
+  })
+})
--- a/src/components/core/yDomain.ts
+++ b/src/components/core/yDomain.ts
@@ -0,0 +1,50 @@
+import type { DisplaySeries, DisplayTrack } from './types'
+
+export type WaveformYDomain = [number, number]
+
+export function normalizeYDomain(
+  domain: readonly [number, number] | undefined,
+): WaveformYDomain | undefined {
+  if (
+    !domain ||
+    !Number.isFinite(domain[0]) ||
+    !Number.isFinite(domain[1]) ||
+    domain[0] === domain[1]
+  ) {
+    return undefined
+  }
+  return domain[0] < domain[1] ? [domain[0], domain[1]] : [domain[1], domain[0]]
+}
+
+export function resolveTrackFixedYDomain(
+  track: Pick<DisplayTrack, 'id'>,
+  yDomains?: Record<string, WaveformYDomain>,
+): WaveformYDomain | undefined {
+  return normalizeYDomain(yDomains?.[track.id])
+}
+
+export function resolveSeriesFixedYDomain(
+  series: Pick<DisplaySeries, 'id'>,
+  yDomain?: WaveformYDomain,
+  yDomains?: Record<string, WaveformYDomain>,
+): WaveformYDomain | undefined {
+  return normalizeYDomain(yDomains?.[series.id]) ?? normalizeYDomain(yDomain)
+}
+
+export function hasFixedYDomainForTrack(
+  track: Pick<DisplayTrack, 'id' | 'visibleSeries'>,
+  yDomain?: WaveformYDomain,
+  yDomains?: Record<string, WaveformYDomain>,
+): boolean {
+  return Boolean(
+    resolveTrackFixedYDomain(track, yDomains) ||
+    track.visibleSeries.some((series) => resolveSeriesFixedYDomain(series, yDomain, yDomains)),
+  )
+}
+
+export function mergeYDomains(domains: readonly WaveformYDomain[]): WaveformYDomain {
+  return [
+    Math.min(...domains.map((domain) => domain[0])),
+    Math.max(...domains.map((domain) => domain[1])),
+  ]
+}
--- a/src/components/interaction/WaveformTooltip.test.ts
+++ b/src/components/interaction/WaveformTooltip.test.ts
@@ -91,6 +91,22 @@ describe('WaveformTooltip', () => {
    expect(wrapper.get('.waveform-tooltip__value').text()).toBe('-1,405.4932 A')
  })

+  it('formats tooltip time with at most four decimal places', () => {
+    const wrapper = mount(WaveformTooltip, {
+      props: {
+        visible: true,
+        position: { x: 10, y: 10 },
+        timeUnit: 's',
+        hoveredPoint: { x: 1.234567, y: 12 },
+        seriesPoints: [],
+        containerWidth: 400,
+        containerHeight: 300,
+      },
+    })
+
+    expect(wrapper.get('.waveform-tooltip__time').text()).toBe('s: 1.2346')
+  })
+
  it('omits the error label when both resolved errors are zero', () => {
    const point = { x: 1, y: 12 }
    const wrapper = mount(WaveformTooltip, {
--- a/src/components/interaction/useWaveformHover.ts
+++ b/src/components/interaction/useWaveformHover.ts
@@ -23,6 +23,7 @@ interface HoverContext {
  titleAreaHeight: ComputedRef<number>
  chartTopMargin: ComputedRef<number>
  sharedOverlayElement: ShallowRef<SVGRectElement | undefined>
+  isPresentationMode: ComputedRef<boolean>
  updateViewportDrag: (event: PointerEvent) => void
  resolveTrackAtPointer: (pointerX: number, pointerY: number) => TrackLayout | undefined
 }
@@ -42,6 +43,7 @@ export function useWaveformHover(context: HoverContext) {
    titleAreaHeight,
    chartTopMargin,
    sharedOverlayElement,
+    isPresentationMode,
    updateViewportDrag,
    resolveTrackAtPointer,
  } = context
@@ -62,6 +64,7 @@ export function useWaveformHover(context: HoverContext) {
    trackIndex: number | null,
    position: { x: number; y: number },
  ) => {
+    if (isPresentationMode.value) return
    if (!hoveredPointsMatch(nextPoints)) hoverState.points = nextPoints
    hoverState.trackIndex = trackIndex
    hoverState.position = position
@@ -73,6 +76,9 @@ export function useWaveformHover(context: HoverContext) {
    hoverState.trackIndex = null
    emit('point-hover', null)
  }
+  const handlePointerLeave = () => {
+    if (!isPresentationMode.value) clearHover()
+  }
  const createHoveredSeriesPoint = (
    series: DisplaySeries,
    trackIndex: number,
@@ -103,6 +109,7 @@ export function useWaveformHover(context: HoverContext) {
    series.points[pointBisector.center(series.points, xValue)]

  const handleIndependentPointerMove = (event: PointerEvent, trackIndex: number) => {
+    if (isPresentationMode.value) return
    if (selection.value?.trackIndex === trackIndex && selection.value.independent) {
      updateViewportDrag(event)
      return
@@ -128,6 +135,7 @@ export function useWaveformHover(context: HoverContext) {
    })
  }
  const handleSharedPointerMove = (event: PointerEvent) => {
+    if (isPresentationMode.value) return
    if (selection.value?.overlay === event.currentTarget) {
      updateViewportDrag(event)
      return
@@ -161,6 +169,7 @@ export function useWaveformHover(context: HoverContext) {
  return {
    cancelPendingHover,
    clearHover,
+    handlePointerLeave,
    beginAnnotationDrag,
    endAnnotationDrag,
    handleIndependentPointerMove,
--- a/src/components/interaction/useWaveformViewport.ts
+++ b/src/components/interaction/useWaveformViewport.ts
@@ -3,6 +3,7 @@ import { computed, nextTick, type ComputedRef, type Ref, type ShallowRef } from

 import { MINIMUM_SELECTION_SIZE } from '../core/constants'
 import type { DisplayTrack, TrackLayout } from '../core/types'
+import { hasFixedYDomainForTrack } from '../core/yDomain'
 import type {
  ResolvedWaveformChartProps,
  ViewportSelectionState,
@@ -26,6 +27,7 @@ interface ViewportContext {
  sharedYDomains: Ref<Record<string, [number, number]>>
  independentYDomains: Ref<Record<number, [number, number]>>
  isZoomMode: ComputedRef<boolean>
+  isPresentationMode: ComputedRef<boolean>
  editorSeriesOptions: Ref<AnnotationSeriesCandidate[]>
  resolveInitialTrackDomain: (track: TrackLayout) => [number, number]
  canZoomTrack: (track: TrackLayout) => boolean
@@ -53,6 +55,7 @@ export function useWaveformViewport(context: ViewportContext) {
    sharedYDomains,
    independentYDomains,
    isZoomMode,
+    isPresentationMode,
    editorSeriesOptions,
    resolveInitialTrackDomain,
    canZoomTrack,
@@ -131,6 +134,7 @@ export function useWaveformViewport(context: ViewportContext) {
      ]),
    )
  const beginViewportDrag = (event: PointerEvent, trackIndex: number, independent: boolean) => {
+    if (isPresentationMode.value) return
    const panRequested = props.pannable && spacePressed.value
    if ((!props.zoomable && !panRequested) || !isZoomMode.value || event.button !== 0) return
    const overlay = event.currentTarget as SVGRectElement
@@ -187,9 +191,13 @@ export function useWaveformViewport(context: ViewportContext) {
    const nextIndependentDomains = { ...independentYDomains.value }
    const nextSharedDomains = { ...sharedYDomains.value }
    targets.forEach((target) => {
+      const chartTrack = chartTracks.value.find((item) => item.id === target.id)
+      if (chartTrack && hasFixedYDomainForTrack(chartTrack, props.yDomain, props.yDomains)) {
+        return
+      }
      const key = target.series.trackId ?? target.series.id
      const source = active.yDomains[key] ?? (target.yScale.domain() as [number, number])
-      const boundary = chartTracks.value.find((item) => item.id === key)?.yDomain ?? source
+      const boundary = chartTrack?.yDomain ?? source
      const ySpan = source[1] - source[0]
      const nextY = clampDomain(
        [source[0] + (dy / height) * ySpan, source[1] + (dy / height) * ySpan],
@@ -203,6 +211,7 @@ export function useWaveformViewport(context: ViewportContext) {
    emit('zoom-change', nextX)
  }
  const updateViewportDrag = (event: PointerEvent) => {
+    if (isPresentationMode.value) return
    const active = selection.value
    if (!active || event.pointerId !== active.pointerId) return
    const track = trackLayouts.value.find((item) => item.index === active.trackIndex)
@@ -285,6 +294,10 @@ export function useWaveformViewport(context: ViewportContext) {
    void nextTick(configureZoom)
  }
  const finishViewportDrag = (event: PointerEvent) => {
+    if (isPresentationMode.value) {
+      cancelViewportDrag()
+      return
+    }
    const active = selection.value
    if (!active || event.pointerId !== active.pointerId) return
    updateViewportDrag(event)
@@ -319,7 +332,7 @@ export function useWaveformViewport(context: ViewportContext) {
    void nextTick(configureZoom)
  }
  const requestViewportReset = (event: MouseEvent) => {
-    if (!props.zoomable || !isZoomMode.value) return
+    if (isPresentationMode.value || !props.zoomable || !isZoomMode.value) return
    event.preventDefault()
    resetViewport()
    emit('zoom-reset')
--- a/src/components/interaction/useWaveformZoom.ts
+++ b/src/components/interaction/useWaveformZoom.ts
@@ -3,6 +3,7 @@ import {
  select,
  zoom,
  zoomIdentity,
+  zoomTransform,
  type D3ZoomEvent,
  type ZoomBehavior,
  type ZoomTransform,
@@ -29,6 +30,7 @@ interface ZoomContext {
  innerHeight: ComputedRef<number>
  hasChartArea: ComputedRef<boolean>
  isZoomMode: ComputedRef<boolean>
+  isPresentationMode: ComputedRef<boolean>
  resolveInitialTrackDomain: (track: TrackLayout) => [number, number]
  cancelPendingHover: () => void
 }
@@ -50,6 +52,7 @@ export function useWaveformZoom(context: ZoomContext) {
    innerHeight,
    hasChartArea,
    isZoomMode,
+    isPresentationMode,
    resolveInitialTrackDomain,
    cancelPendingHover,
  } = context
@@ -67,7 +70,7 @@ export function useWaveformZoom(context: ZoomContext) {

  const scheduleZoomCommit = () => zoomThrottle.schedule(commitPendingZoom)
  const handleSharedZoom = (event: D3ZoomEvent<SVGRectElement, unknown>) => {
-    if (synchronizingZoomTransform) return
+    if (synchronizingZoomTransform || isPresentationMode.value) return
    cancelPendingHover()
    pendingSharedZoomTransform = event.transform
    pendingSharedZoomGesture = 'wheel'
@@ -78,7 +81,7 @@ export function useWaveformZoom(context: ZoomContext) {
    event: D3ZoomEvent<SVGRectElement, unknown>,
    trackIndex: number,
  ) => {
-    if (synchronizingZoomTransform) return
+    if (synchronizingZoomTransform || isPresentationMode.value) return
    cancelPendingHover()
    pendingIndependentZoomTransforms.set(trackIndex, event.transform)
    pendingIndependentZoomGestures.set(trackIndex, 'wheel')
@@ -86,6 +89,10 @@ export function useWaveformZoom(context: ZoomContext) {
    scheduleWheelZoomEnd()
  }
  function commitPendingZoom() {
+    if (isPresentationMode.value) {
+      cancelPendingZoom()
+      return
+    }
    if (pendingSharedZoomTransform) {
      const transform = pendingSharedZoomTransform
      pendingSharedZoomTransform = null
@@ -231,9 +238,24 @@ export function useWaveformZoom(context: ZoomContext) {
    const tracks = trackLayouts.value.filter((track) => track.hasVisibleSeries)
    return tracks.length > 0 && tracks.every(canZoomTrack)
  }
+  const canHandleWheelZoom = (event: Event, canZoomIn: boolean): boolean => {
+    if (event.type !== 'wheel') return false
+    const deltaY = (event as WheelEvent).deltaY
+    if (deltaY < 0) return canZoomIn
+    if (deltaY > 0) {
+      return zoomTransform(event.currentTarget as Element).k > ZOOM_CONSTRAINTS.MIN_SCALE
+    }
+    return false
+  }
  const configureZoom = () => {
    clearZoomBindings()
-    if (!props.zoomable || !isZoomMode.value || !hasChartArea.value || !trackLayouts.value.length) {
+    if (
+      isPresentationMode.value ||
+      !props.zoomable ||
+      !isZoomMode.value ||
+      !hasChartArea.value ||
+      !trackLayouts.value.length
+    ) {
      return
    }
    if (props.displayMode === 'independent') {
@@ -244,10 +266,7 @@ export function useWaveformZoom(context: ZoomContext) {
        if (!overlay) return
        const dataDomain = resolveInitialTrackDomain(track)
        const behavior = zoom<SVGRectElement, unknown>()
-          .filter(
-            (event) =>
-              event.type === 'wheel' && (event as WheelEvent).deltaY < 0 && canZoomTrack(track),
-          )
+          .filter((event) => canHandleWheelZoom(event, canZoomTrack(track)))
          .scaleExtent([1, resolveMaximumZoomScale(dataDomain)])
          .extent([
            [0, 0],
@@ -275,10 +294,7 @@ export function useWaveformZoom(context: ZoomContext) {
    const overlay = sharedOverlayElement.value
    if (!overlay) return
    const behavior = zoom<SVGRectElement, unknown>()
-      .filter(
-        (event) =>
-          event.type === 'wheel' && (event as WheelEvent).deltaY < 0 && canZoomSharedTracks(),
-      )
+      .filter((event) => canHandleWheelZoom(event, canZoomSharedTracks()))
      .scaleExtent([1, resolveMaximumZoomScale(initialXDomain.value)])
      .extent([
        [0, 0],
--- a/src/components/rendering/WaveformTrack.css
+++ b/src/components/rendering/WaveformTrack.css
@@ -70,6 +70,11 @@
  cursor: crosshair;
 }

+.waveform-track__overlay.is-presentation {
+  cursor: default;
+  pointer-events: none;
+}
+
 .waveform-track__zero-line {
  fill: none;
  pointer-events: none;
--- a/src/components/rendering/WaveformTrack.vue
+++ b/src/components/rendering/WaveformTrack.vue
@@ -13,6 +13,7 @@ interface Props {
  clipPathId: string
  innerWidth: number
  zoomable: boolean
+  interactive?: boolean
  displayMode: WaveformDisplayMode
  interactionMode?: WaveformInteractionMode
  frameNumber?: string | number
@@ -38,6 +39,7 @@ interface Emits {

 const props = withDefaults(defineProps<Props>(), {
  interactionMode: 'zoom',
+  interactive: true,
  cleanView: false,
  zeroLine: () => ({ visible: false, color: '#98a2b3', width: 1, dash: '6 4' }),
 })
@@ -92,7 +94,7 @@ const resolvedFrameStyle = computed(() => {
    />

    <rect
-      v-if="!track.isEmpty && !cleanView"
+      v-if="!track.isEmpty"
      class="waveform-track__plot-frame waveform-chart__plot-frame"
      :width="track.width ?? innerWidth"
      :height="track.height"
@@ -116,9 +118,11 @@ const resolvedFrameStyle = computed(() => {
      v-if="!track.isEmpty && track.hasVisibleSeries && displayMode === 'independent'"
      class="waveform-track__overlay waveform-track__overlay--independent waveform-chart__overlay waveform-chart__overlay--independent"
      :class="{
-        'is-zoomable': zoomable && interactionMode === 'zoom',
-        'is-annotating': interactionMode === 'annotation',
+        'is-zoomable': interactive && zoomable && interactionMode === 'zoom',
+        'is-annotating': interactive && interactionMode === 'annotation',
+        'is-presentation': !interactive,
      }"
+      :data-interactive="interactive"
      :data-independent-overlay-index="track.index"
      :width="track.width ?? innerWidth"
      :height="track.height"
--- a/src/components/rendering/WaveformTrackAxes.vue
+++ b/src/components/rendering/WaveformTrackAxes.vue
@@ -43,8 +43,11 @@ function renderAxes() {
    const element = yAxisElements.value[index]
    if (!element) return
    const [axisMin, axisMax] = axis.scale.domain()
+    const topTickValue = Math.max(...axis.tickValues)
    const yAxis = (axis.side === 'left' ? axisLeft(axis.scale) : axisRight(axis.scale))
-      .tickFormat((value) => formatScientificAxisLabel(Number(value), { axisMin, axisMax }))
+      .tickFormat((value) =>
+        formatScientificAxisLabel(Number(value), { axisMin, axisMax, topTickValue }),
+      )
      .tickSize(-4)
      .tickPadding(7)
      .tickSizeOuter(0)
@@ -103,14 +106,14 @@ watch(

 <template>
  <g
-    v-if="track.showXAxis && !cleanView"
+    v-if="track.showXAxis"
    ref="xAxisElement"
    class="waveform-track__axis waveform-track__axis--x waveform-chart__axis waveform-chart__axis--x"
    :class="{ 'waveform-track__axis--line-hidden': axes?.x?.lineVisible === false }"
    :transform="`translate(0, ${track.height})`"
  />
  <g
-    v-if="track.showXAxis && !cleanView"
+    v-if="track.showXAxis"
    class="waveform-track__axis-endpoints waveform-chart__axis-endpoints"
    :transform="`translate(0, ${track.height})`"
    font-family="sans-serif"
@@ -136,19 +139,8 @@ watch(
      {{ track.endpointLabels.end }}
    </text>
  </g>
-  <text
-    v-if="track.showXAxis && track.xAxisExponent && !cleanView"
-    class="waveform-track__axis-exponent waveform-track__axis-exponent--x waveform-chart__axis-exponent waveform-chart__axis-exponent--x"
-    :x="track.width ?? innerWidth"
-    :y="track.height + 27"
-    text-anchor="end"
-    aria-hidden="true"
-  >
-    {{ track.xAxisExponent }}
-  </text>
-
  <g
-    v-for="axis in track.isEmpty || cleanView ? [] : track.yAxes"
+    v-for="axis in track.isEmpty ? [] : track.yAxes"
    :key="`y-axis-${track.index}-${axis.index}`"
    :ref="(element) => setYAxisElement(element, axis.index)"
    class="waveform-track__axis waveform-track__axis--y waveform-chart__axis waveform-chart__axis--y"
@@ -160,22 +152,6 @@ watch(
    :data-y-axis-side="axis.side"
    :transform="`translate(${axis.x}, 0)`"
  />
-  <text
-    v-for="axis in track.isEmpty || cleanView
-      ? []
-      : track.yAxes.filter((item) => item.exponentLabel)"
-    :key="`y-axis-exponent-${track.index}-${axis.index}`"
-    class="waveform-track__axis-exponent waveform-track__axis-exponent--y waveform-chart__axis-exponent waveform-chart__axis-exponent--y"
-    :data-y-axis-index="axis.index"
-    :x="axis.exponentX"
-    y="0"
-    dy="0.32em"
-    :text-anchor="axis.side === 'left' ? 'end' : 'start'"
-    aria-hidden="true"
-  >
-    {{ axis.exponentLabel }}
-  </text>
-
  <g
    v-if="
      !cleanView &&
--- a/src/components/waveformChartCases/compactAndSharedHover.test.ts
+++ b/src/components/waveformChartCases/compactAndSharedHover.test.ts
@@ -72,7 +72,7 @@ describe('WaveformChart', () => {
    expect(endTicks[3]).toHaveLength(0)
  })

-  it('keeps one separate shared exponent for every compact Y axis', async () => {
+  it('prefixes one shared exponent to the largest visible tick on every compact Y axis', async () => {
    const wrapper = await mountSizedChart(
      {
        kind: 'series',
@@ -83,7 +83,7 @@ describe('WaveformChart', () => {
              kind: 'points',
              points: [
                { x: 0, y: 0 },
-                { x: 1, y: 254 },
+                { x: 1, y: 2540 },
              ],
            },
          },
@@ -103,14 +103,14 @@ describe('WaveformChart', () => {
    )

    const axes = wrapper.findAll('.waveform-chart__axis--y')
-    const exponents = wrapper.findAll('.waveform-chart__axis-exponent--y')
    expect(axes).toHaveLength(2)
-    expect(exponents.map((label) => label.text())).toEqual(['E+02', 'E-04'])
-    axes.forEach((axis) => {
+    axes.forEach((axis, index) => {
      const labels = axis.findAll('.tick text').map((tick) => tick.text())
-      expect(labels.every((label) => !label.startsWith('E'))).toBe(true)
-      expect(labels.every((label) => /^-?\d+\.\d{2}$/.test(label))).toBe(true)
+      const exponentLabels = labels.filter((label) => label.startsWith('E'))
+      expect(exponentLabels).toHaveLength(1)
+      expect(exponentLabels[0]).toMatch(index === 0 ? /^E\+03 / : /^E-04 /)
    })
+    expect(wrapper.find('.waveform-chart__axis-exponent--y').exists()).toBe(false)
  })

  it('prefers a trimmed series name and falls back to yLabel for unnamed data', async () => {
--- a/src/components/waveformChartCases/dataAndHoverPerformance.test.ts
+++ b/src/components/waveformChartCases/dataAndHoverPerformance.test.ts
@@ -178,7 +178,7 @@ describe('WaveformChart', () => {
    await flushPromises()
    expect(wrapper.emitted('point-hover')?.at(-1)).toEqual([{ x: 1, y: 5 }])
    expect(wrapper.find('.waveform-chart__tooltip').exists()).toBe(true)
-    expect(wrapper.get('.waveform-chart__tooltip').text()).toContain('ms: 1,000.0000')
+    expect(wrapper.get('.waveform-chart__tooltip-time').text()).toBe('ms: 1,000')
    const crosshairLines = wrapper.findAll('.waveform-chart__crosshair line')
    expect(crosshairLines).toHaveLength(1)
    expect(crosshairLines[0].attributes('x1')).toBe(crosshairLines[0].attributes('x2'))
@@ -303,7 +303,7 @@ describe('WaveformChart', () => {
    flushAnimationFrames()
    await flushPromises()

-    expect(wrapper.get('.waveform-chart__tooltip').text()).toContain('ms: 1,000.0000')
+    expect(wrapper.get('.waveform-chart__tooltip-time').text()).toBe('ms: 1,000')
    expect(wrapper.findAll('.waveform-chart__crosshair line')).toHaveLength(1)
    expect(wrapper.get('.waveform-chart__line').element).toBe(pathBeforeHover)
    expect(chartUpdate).not.toHaveBeenCalled()
--- a/src/components/waveformChartCases/dataLifecycle.test.ts
+++ b/src/components/waveformChartCases/dataLifecycle.test.ts
@@ -62,15 +62,15 @@ describe('WaveformChart', () => {
      ],
    }
    const wrapper = await mountSizedChart(firstData)
-    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('1.00')
+    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('1000')

    firstData.points.push({ x: 2, y: 2 })
    await flushPromises()
-    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('1.00')
+    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('1000')

    await wrapper.setProps({ data: { ...firstData, points: [...firstData.points] } })
    await flushPromises()
-    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('2.00')
+    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('2000')
  })

  it('keeps controlled annotations when replacing the loaded data window', async () => {
@@ -170,7 +170,7 @@ describe('WaveformChart', () => {
    expect(wrapper.findAll('.waveform-chart__track-label')).toHaveLength(0)
    expect(
      wrapper.findAll('.waveform-chart__axis-endpoint--end').map((item) => item.text()),
-    ).toEqual(['1.00', '2.00'])
+    ).toEqual(['1000', '2000'])
  })

  it('keeps the zero Y-axis label on upper compact tracks', async () => {
--- a/src/components/waveformChartCases/frameGridAndFormatting.test.ts
+++ b/src/components/waveformChartCases/frameGridAndFormatting.test.ts
@@ -162,35 +162,42 @@ describe('WaveformChart', () => {
    expect(wrapper.get('.waveform-chart__axis-endpoint--end').attributes('x')).toBe(
      String(trackWidth),
    )
-    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('4.99')
-    expect(wrapper.get('.waveform-chart__axis-exponent--x').text()).toBe('E+03')
+    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('4990')
+    expect(wrapper.find('.waveform-chart__axis-exponent--x').exists()).toBe(false)
  })

  it('uses one shared scientific exponent only for large and tiny Y-axis domains', async () => {
    const cases = [
-      { values: [0, 50], exponent: null },
-      { values: [0, 254], exponent: 'E+02' },
-      { values: [0, 0.0002], exponent: 'E-04' },
+      { values: [0, 50], yDomain: [0, 50] as [number, number], exponent: null },
+      { values: [1000, 3000], yDomain: [1000, 3000] as [number, number], exponent: 'E+03' },
+      {
+        values: [0.0001, 0.0003],
+        yDomain: [0.0001, 0.0003] as [number, number],
+        exponent: 'E-04',
+      },
    ]

-    for (const { values, exponent } of cases) {
-      const wrapper = await mountSizedChart({
-        kind: 'points',
+    for (const { values, yDomain, exponent } of cases) {
+      const data = {
+        kind: 'points' as const,
        points: values.map((y, x) => ({ x, y })),
-      })
+      }
+      const originalValues = data.points.map((point) => point.y)
+      const wrapper = await mountSizedChart(data, { yDomain })
      const labels = wrapper
        .get('.waveform-chart__axis--y')
        .findAll('.tick text')
        .map((tick) => tick.text())
-      const exponentLabel = wrapper.find('.waveform-chart__axis-exponent--y')
+      const exponentLabels = labels.filter((label) => label.startsWith('E'))

      if (exponent === null) {
-        expect(exponentLabel.exists()).toBe(false)
+        expect(exponentLabels).toHaveLength(0)
      } else {
-        expect(exponentLabel.text()).toBe(exponent)
-        expect(labels.every((label) => !label.startsWith('E'))).toBe(true)
-        expect(labels.every((label) => /^-?\d+\.\d{2}$/.test(label))).toBe(true)
+        expect(exponentLabels).toHaveLength(1)
+        expect(exponentLabels[0]).toMatch(new RegExp(`^${exponent.replace('+', '\\+')} `))
      }
+      expect(wrapper.find('.waveform-chart__axis-exponent--y').exists()).toBe(false)
+      expect(data.points.map((point) => point.y)).toEqual(originalValues)

      wrapper.unmount()
    }
@@ -212,13 +219,13 @@ describe('WaveformChart', () => {

    expect(millisecondsChart.text()).toContain('时间（ms）')
    expect(millisecondTicks.length).toBeGreaterThan(0)
-    expect(millisecondsChart.get('.waveform-chart__axis-endpoint--end').text()).toBe('1.00')
-    expect(millisecondsChart.get('.waveform-chart__axis-exponent--x').text()).toBe('E+03')
+    expect(millisecondsChart.get('.waveform-chart__axis-endpoint--end').text()).toBe('1000')
+    expect(millisecondsChart.find('.waveform-chart__axis-exponent--x').exists()).toBe(false)
    expect(millisecondsChart.find('.waveform-chart__watermark').exists()).toBe(false)

    const secondsChart = await mountSizedChart(data, { timeUnit: 's', xLabel: 'Elapsed time' })
    expect(secondsChart.text()).toContain('Elapsed time')
-    expect(secondsChart.get('.waveform-chart__axis-endpoint--end').text()).toBe('1.00')
+    expect(secondsChart.get('.waveform-chart__axis-endpoint--end').text()).toBe('1')
    expect(secondsChart.find('.waveform-chart__axis-exponent--x').exists()).toBe(false)
  })

@@ -237,15 +244,15 @@ describe('WaveformChart', () => {

    expect(start.attributes('x')).toBe('0')
    expect(start.attributes('text-anchor')).toBe('start')
-    expect(start.text()).toBe('0.00')
+    expect(start.text()).toBe('0')
    expect(end.attributes('x')).toBe(
      wrapper.get('.waveform-chart__track').attributes('data-track-width'),
    )
    expect(end.attributes('text-anchor')).toBe('end')
-    expect(end.text()).toBe('2.00')
+    expect(end.text()).toBe('1999')
    expect(middleTickLabels.length).toBeGreaterThan(0)
-    expect(middleTickLabels).not.toContain('0.00')
-    expect(wrapper.get('.waveform-chart__axis-exponent--x').text()).toBe('E+03')
+    expect(middleTickLabels).not.toContain('0')
+    expect(wrapper.find('.waveform-chart__axis-exponent--x').exists()).toBe(false)
    expect(wrapper.findAll('.waveform-chart__grid--major line').length).toBeGreaterThan(
      middleTickLabels.length,
    )
@@ -300,6 +307,6 @@ describe('WaveformChart', () => {
    )
    expect(wrapper.get('.waveform-chart__axis-endpoint--start').text()).not.toBe(initialStart)
    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).not.toBe(initialEnd)
-    expect(wrapper.get('.waveform-chart__axis-endpoint--start').text()).toContain('.')
+    expect(wrapper.get('.waveform-chart__axis-endpoint--start').text()).toMatch(/^-?\d+$/)
  })
 })
--- a/src/components/waveformChartCases/interactionAndAnnotationCreation.test.ts
+++ b/src/components/waveformChartCases/interactionAndAnnotationCreation.test.ts
@@ -59,7 +59,7 @@ describe('WaveformChart', () => {
    await flushPromises()

    expect(wrapper.findAll('.waveform-chart__axis--x')).toHaveLength(1)
-    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('2.00')
+    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('2000')
  })

  it('updates rendering props and disables zoom interaction', async () => {
--- a/src/components/waveformChartCases/layoutAndDomains.test.ts
+++ b/src/components/waveformChartCases/layoutAndDomains.test.ts
@@ -33,10 +33,10 @@ describe('WaveformChart', () => {
      tracks[0].get('.waveform-chart__y-axis-label-bg').attributes('x'),
    )

-    expect(labelX).toBe(-103)
+    expect(labelX).toBe(-74)
    expect(labelBackgroundX).toBe(labelX - 12)
-    expect(Number(wrapper.attributes('data-chart-left-margin'))).toBe(119)
-    expect(secondLeft - firstWidth).toBeGreaterThanOrEqual(119)
+    expect(Number(wrapper.attributes('data-chart-left-margin'))).toBe(90)
+    expect(secondLeft - firstWidth).toBeGreaterThanOrEqual(90)
  })

  it('keeps a tick-only gutter when channel labels are empty', async () => {
@@ -62,8 +62,8 @@ describe('WaveformChart', () => {
    const secondLeft = Number(tracks[1].attributes('data-track-left'))

    expect(wrapper.findAll('.waveform-chart__y-axis-label')).toHaveLength(0)
-    expect(Number(wrapper.attributes('data-chart-left-margin'))).toBe(89)
-    expect(secondLeft - firstWidth).toBeGreaterThanOrEqual(89)
+    expect(Number(wrapper.attributes('data-chart-left-margin'))).toBe(64)
+    expect(secondLeft - firstWidth).toBeGreaterThanOrEqual(60)
  })

  it('keeps the Y-axis label gutter stable while paging between value ranges', async () => {
@@ -122,7 +122,7 @@ describe('WaveformChart', () => {
    const tracks = wrapper.findAll('.waveform-chart__track')
    const firstWidth = Number(tracks[0].attributes('data-track-width'))
    const secondLeft = Number(tracks[1].attributes('data-track-left'))
-    expect(secondLeft - firstWidth).toBeGreaterThanOrEqual(39)
+    expect(secondLeft - firstWidth).toBeGreaterThanOrEqual(32)
  })

  it('uses one shared overlay and bottom-row x axes for separated and compact grids', async () => {
@@ -225,7 +225,7 @@ describe('WaveformChart', () => {
    }
  })

-  it('uses each track x domain in independent mode instead of the shared initial domain', async () => {
+  it('uses the shared initial x domain for every independent track by default', async () => {
    const wrapper = await mountSizedChart(
      {
        kind: 'series',
@@ -262,8 +262,10 @@ describe('WaveformChart', () => {
    )

    const tracks = wrapper.findAll('.waveform-chart__track')
-    expect(tracks[0]?.get('.waveform-chart__axis-endpoint--end').text()).toBe('6.00')
-    expect(tracks[1]?.get('.waveform-chart__axis-endpoint--end').text()).toBe('5.00')
+    expect(tracks[0]?.get('.waveform-chart__axis-endpoint--start').text()).toBe('-8000')
+    expect(tracks[0]?.get('.waveform-chart__axis-endpoint--end').text()).toBe('5000')
+    expect(tracks[1]?.get('.waveform-chart__axis-endpoint--start').text()).toBe('-8000')
+    expect(tracks[1]?.get('.waveform-chart__axis-endpoint--end').text()).toBe('5000')
  })

  it('uses an explicit initial x domain override for an independent track', async () => {
@@ -291,7 +293,32 @@ describe('WaveformChart', () => {
      },
    )

-    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('1.00')
+    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('1000')
+  })
+
+  it('reacts to exact fixed Y-domain props and returns to automatic bounds', async () => {
+    const wrapper = await mountSizedChart({
+      kind: 'points',
+      points: [
+        { x: 0, y: 0 },
+        { x: 1, y: 100 },
+      ],
+    })
+    const yTickLabels = () =>
+      wrapper
+        .get('.waveform-chart__axis--y')
+        .findAll('.tick text')
+        .map((tick) => tick.text())
+
+    await wrapper.setProps({ yDomain: [3, 97] })
+    await flushPromises()
+    expect(yTickLabels()).toContain('3')
+    expect(yTickLabels()).toContain('97')
+
+    await wrapper.setProps({ yDomain: undefined })
+    await flushPromises()
+    expect(yTickLabels()).not.toContain('3')
+    expect(yTickLabels()).not.toContain('97')
  })

  it('keeps annotations bound to their channel while paging', async () => {
--- a/src/components/waveformChartCases/multiAxisAndPagination.test.ts
+++ b/src/components/waveformChartCases/multiAxisAndPagination.test.ts
@@ -30,7 +30,7 @@ describe('WaveformChart', () => {
              kind: 'points',
              points: [
                { x: 0, y: 0 },
-                { x: 1, y: 254 },
+                { x: 1, y: 2540 },
              ],
            },
          },
@@ -51,13 +51,13 @@ describe('WaveformChart', () => {
    )

    expect(
-      wrapper
-        .findAll('.waveform-chart__axis-exponent--y')
-        .map((label) => [label.attributes('data-y-axis-index'), label.text()]),
-    ).toEqual([
-      ['1', 'E+02'],
-      ['2', 'E-04'],
-    ])
+      wrapper.findAll('.waveform-chart__axis--y').map((axis) =>
+        axis
+          .findAll('.tick text')
+          .map((label) => label.text())
+          .filter((label) => label.startsWith('E')),
+      ),
+    ).toEqual([[], [expect.stringMatching(/^E\+03 /)], [expect.stringMatching(/^E-04 /)]])
  })

  it('reprojects annotations with the Y axis assigned to their series', async () => {
--- a/src/components/waveformChartCases/presentationAndAxes.test.ts
+++ b/src/components/waveformChartCases/presentationAndAxes.test.ts
@@ -54,8 +54,9 @@ describe('WaveformChart', () => {
      ],
    })

-    expect(first.find('.waveform-chart__axis-exponent--y').exists()).toBe(false)
-    expect(second.get('.waveform-chart__axis-exponent--y').text()).toBe('E+04')
+    expect(first.get('.waveform-chart__axis--y').text()).not.toContain('E')
+    expect(second.get('.waveform-chart__axis--y').text()).toContain('E+04 ')
+    expect(second.find('.waveform-chart__axis-exponent--y').exists()).toBe(false)
  })

  it('renders a configurable zero line only when the Y domain contains zero', async () => {
@@ -146,7 +147,7 @@ describe('WaveformChart', () => {
            kind: 'points',
            points: [
              { x: 0, y: -1 },
-              { x: 1, y: 1 },
+              { x: 10_000, y: 1 },
            ],
          },
        },
@@ -227,8 +228,8 @@ describe('WaveformChart', () => {
          data: {
            kind: 'points',
            points: [
-              { x: 0, y: 1 },
-              { x: 1, y: 2 },
+              { x: 0, y: 10_000 },
+              { x: 10_000, y: 20_000 },
            ],
          },
        },
@@ -239,7 +240,7 @@ describe('WaveformChart', () => {
            kind: 'points',
            points: [
              { x: 0, y: 2 },
-              { x: 1, y: 3 },
+              { x: 10_000, y: 3 },
            ],
          },
        },
@@ -252,6 +253,8 @@ describe('WaveformChart', () => {
      annotations: [{ id: 'note', seriesId: 'first', x: 0.5, y: 0, text: 'hidden note' }],
      zeroLine: { visible: true },
      title: { text: 'hidden title' },
+      axes: { x: { lineVisible: false }, y: { lineVisible: false } },
+      frameStyle: { borderColor: '#dc2626', borderWidth: 2, borderStyle: 'dashed' as const },
    }
    const regularWrapper = await mountSizedChart(data, sharedProps)
    const wrapper = await mountSizedChart(data, {
@@ -285,13 +288,32 @@ describe('WaveformChart', () => {
    expect(wrapper.find('.waveform-chart__overlay--independent').exists()).toBe(true)
    expect(wrapper.get('.waveform-chart__title-area').attributes('aria-hidden')).toBe('true')
    expect(wrapper.find('.waveform-chart__title-visual').exists()).toBe(false)
-    expect(wrapper.find('.waveform-chart__axis').exists()).toBe(false)
+    const xAxis = wrapper.get('.waveform-chart__axis--x')
+    const yAxes = wrapper.findAll('.waveform-chart__axis--y')
+    expect(yAxes).toHaveLength(2)
+    expect(xAxis.findAll('.tick line').length).toBeGreaterThan(0)
+    expect(xAxis.findAll('.tick text').length).toBeGreaterThan(0)
+    yAxes.forEach((axis) => {
+      expect(axis.findAll('.tick line').length).toBeGreaterThan(0)
+      expect(axis.findAll('.tick text').length).toBeGreaterThan(0)
+      expect(axis.get('path.domain').attributes('display')).toBe('none')
+    })
+    expect(xAxis.get('path.domain').attributes('display')).toBe('none')
+    expect(wrapper.findAll('.waveform-chart__axis-endpoint')).toHaveLength(2)
+    expect(wrapper.find('.waveform-chart__axis-exponent--x').exists()).toBe(false)
+    expect(yAxes.some((axis) => axis.text().includes('E+04 '))).toBe(true)
+    expect(wrapper.find('.waveform-chart__axis-exponent--y').exists()).toBe(false)
    expect(wrapper.find('.waveform-chart__grid').exists()).toBe(false)
-    expect(wrapper.find('.waveform-chart__plot-frame').exists()).toBe(false)
+    expect(wrapper.get('.waveform-chart__plot-frame').attributes()).toMatchObject({
+      stroke: '#dc2626',
+      'stroke-width': '2',
+      'stroke-dasharray': '6 4',
+    })
    expect(wrapper.find('.waveform-chart__plot-background').exists()).toBe(false)
    expect(wrapper.find('.waveform-chart__watermark').exists()).toBe(false)
    expect(wrapper.find('.waveform-chart__legend-layer').exists()).toBe(false)
    expect(wrapper.find('.waveform-chart__label').exists()).toBe(false)
+    expect(wrapper.find('.waveform-chart__y-axis-label').exists()).toBe(false)
    expect(wrapper.find('.waveform-chart__zero-line').exists()).toBe(false)
    expect(wrapper.find('.waveform-annotation-layer').exists()).toBe(false)
    expect(wrapper.find('.ant-pagination').exists()).toBe(false)
--- a/src/components/waveformChartCases/presentationMode.test.ts
+++ b/src/components/waveformChartCases/presentationMode.test.ts
@@ -0,0 +1,306 @@
+import { flushPromises } from '@vue/test-utils'
+import { describe, expect, it } from 'vitest'
+
+import { flushAnimationFrames } from '../../test/setup'
+import { mountSizedChart } from '../../test/waveformChart'
+import type { WaveformData, WaveformDisplayMode } from '../data/types'
+
+const presentationData: WaveformData = {
+  kind: 'series',
+  series: [
+    {
+      id: 'low',
+      trackId: 'shared',
+      name: '低量程',
+      data: {
+        kind: 'points',
+        points: [
+          { x: 0, y: 0 },
+          { x: 1, y: 10 },
+          { x: 2, y: 5 },
+        ],
+      },
+    },
+    {
+      id: 'high',
+      trackId: 'shared',
+      name: '高量程',
+      data: {
+        kind: 'points',
+        points: [
+          { x: 0, y: 100 },
+          { x: 1, y: 200 },
+          { x: 2, y: 150 },
+        ],
+      },
+    },
+    {
+      id: 'other',
+      name: '其他通道',
+      data: {
+        kind: 'points',
+        points: [
+          { x: 0, y: -1 },
+          { x: 1, y: 1 },
+          { x: 2, y: 0 },
+        ],
+      },
+    },
+  ],
+}
+
+function setOverlayBounds(overlay: ReturnType<Awaited<ReturnType<typeof mountSizedChart>>['get']>) {
+  const width = Number(overlay.attributes('width'))
+  const height = Number(overlay.attributes('height'))
+  Object.defineProperty(overlay.element, 'getBoundingClientRect', {
+    value: () => ({ left: 0, top: 0, width, height }),
+  })
+  return { width, height }
+}
+
+function dispatchPointer(
+  element: Element,
+  type: string,
+  options: MouseEventInit & { pointerId: number },
+) {
+  const event = new MouseEvent(type, { bubbles: true, cancelable: true, ...options })
+  Object.defineProperty(event, 'pointerId', { value: options.pointerId })
+  element.dispatchEvent(event)
+}
+
+describe('WaveformChart presentation mode', () => {
+  it('keeps existing plot interaction enabled by default', async () => {
+    const wrapper = await mountSizedChart(presentationData, {
+      grid: { rowCount: 1, columnCount: 1 },
+    })
+    const overlay = wrapper.get('.waveform-chart__overlay--independent')
+    const { width, height } = setOverlayBounds(overlay)
+
+    expect(wrapper.attributes('data-presentation-mode')).toBe('false')
+    expect(overlay.classes()).toContain('is-zoomable')
+
+    overlay.element.dispatchEvent(
+      new MouseEvent('pointermove', {
+        clientX: width / 2,
+        clientY: height / 2,
+        bubbles: true,
+      }),
+    )
+    flushAnimationFrames()
+    await flushPromises()
+
+    expect(wrapper.find('.waveform-chart__tooltip').exists()).toBe(true)
+    expect(wrapper.emitted('point-hover')?.length).toBeGreaterThan(0)
+  })
+
+  it.each<WaveformDisplayMode>(['independent', 'separated'])(
+    'blocks plot mouse events in %s layout',
+    async (displayMode) => {
+      const wrapper = await mountSizedChart(presentationData, {
+        annotations: [{ id: 'note', seriesId: 'low', x: 1, y: 10, text: '只读标注' }],
+        displayMode,
+        grid: { rowCount: 1, columnCount: 1 },
+        interactionMode: 'annotation',
+        presentationMode: true,
+      })
+      const overlay = wrapper.get('.waveform-chart__overlay')
+      const { width, height } = setOverlayBounds(overlay)
+
+      expect(wrapper.attributes('data-presentation-mode')).toBe('true')
+      expect(overlay.classes()).not.toContain('is-zoomable')
+      expect(overlay.classes()).not.toContain('is-annotating')
+
+      overlay.element.dispatchEvent(
+        new MouseEvent('pointermove', {
+          clientX: width / 2,
+          clientY: height / 2,
+          bubbles: true,
+        }),
+      )
+      overlay.element.dispatchEvent(
+        new WheelEvent('wheel', {
+          deltaY: -4000,
+          clientX: width / 2,
+          clientY: height / 2,
+          bubbles: true,
+          cancelable: true,
+        }),
+      )
+      overlay.element.dispatchEvent(
+        new MouseEvent('click', {
+          clientX: width / 2,
+          clientY: height / 2,
+          bubbles: true,
+          cancelable: true,
+        }),
+      )
+      overlay.element.dispatchEvent(
+        new MouseEvent('contextmenu', {
+          clientX: width / 2,
+          clientY: height / 2,
+          bubbles: true,
+          cancelable: true,
+        }),
+      )
+      wrapper.get('.waveform-chart__svg').element.dispatchEvent(
+        new MouseEvent('dblclick', { bubbles: true, cancelable: true }),
+      )
+      await wrapper.get('[data-annotation-id="note"]').trigger('contextmenu', {
+        clientX: width / 2,
+        clientY: height / 2,
+      })
+      const annotation = wrapper.get('[data-annotation-id="note"]').element
+      dispatchPointer(annotation, 'pointerdown', {
+        button: 0,
+        clientX: width / 2,
+        clientY: height / 2,
+        pointerId: 42,
+      })
+      dispatchPointer(annotation, 'pointermove', {
+        clientX: width / 2 + 30,
+        clientY: height / 2 + 20,
+        pointerId: 42,
+      })
+      dispatchPointer(annotation, 'pointerup', {
+        clientX: width / 2 + 30,
+        clientY: height / 2 + 20,
+        pointerId: 42,
+      })
+      flushAnimationFrames()
+      await flushPromises()
+
+      expect(wrapper.find('.waveform-chart__tooltip').exists()).toBe(false)
+      expect(wrapper.find('.waveform-annotation-editor').exists()).toBe(false)
+      expect(wrapper.find('.waveform-annotation-context-menu').exists()).toBe(false)
+      expect(wrapper.emitted('point-hover')).toBeUndefined()
+      expect(wrapper.emitted('zoom-change')).toBeUndefined()
+      expect(wrapper.emitted('zoom-end')).toBeUndefined()
+      expect(wrapper.emitted('zoom-reset')).toBeUndefined()
+      expect(wrapper.emitted('update:annotations')).toBeUndefined()
+    },
+  )
+
+  it('keeps the legend and pagination interactive', async () => {
+    const wrapper = await mountSizedChart(presentationData, {
+      grid: { rowCount: 1, columnCount: 1, showPagination: true },
+      legend: { interactive: true },
+      presentationMode: true,
+    })
+
+    await wrapper.findAll('.waveform-chart__legend-item')[1]!.trigger('click')
+    await flushPromises()
+    expect(wrapper.emitted('update:hidden-series-ids')?.at(-1)).toEqual([['high']])
+
+    await wrapper.get('.ant-pagination-next button').trigger('click')
+    await flushPromises()
+    expect(wrapper.emitted('page-change')?.at(-1)).toEqual([2, 2])
+  })
+
+  it('cleans active UI state and restores interaction without resetting the viewport', async () => {
+    const wrapper = await mountSizedChart(presentationData, {
+      grid: { rowCount: 1, columnCount: 1 },
+    })
+    const overlay = wrapper.get('.waveform-chart__overlay--independent')
+    const { width, height } = setOverlayBounds(overlay)
+
+    overlay.element.dispatchEvent(
+      new WheelEvent('wheel', {
+        deltaY: -4000,
+        clientX: width / 2,
+        clientY: height / 2,
+        bubbles: true,
+        cancelable: true,
+      }),
+    )
+    flushAnimationFrames()
+    await flushPromises()
+    const zoomedEndpoint = wrapper.get('.waveform-chart__axis-endpoint--end').text()
+
+    dispatchPointer(overlay.element, 'pointerdown', {
+      button: 0,
+      clientX: width * 0.25,
+      clientY: height / 2,
+      pointerId: 41,
+    })
+    dispatchPointer(overlay.element, 'pointermove', {
+      clientX: width * 0.75,
+      clientY: height / 2,
+      pointerId: 41,
+    })
+    await flushPromises()
+    expect(wrapper.find('.waveform-chart__zoom-selection').exists()).toBe(true)
+
+    await wrapper.setProps({ presentationMode: true })
+    await flushPromises()
+
+    expect(wrapper.find('.waveform-chart__zoom-selection').exists()).toBe(false)
+    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe(zoomedEndpoint)
+
+    const zoomEventCount = wrapper.emitted('zoom-change')?.length ?? 0
+    await wrapper.setProps({ presentationMode: false })
+    await flushPromises()
+    overlay.element.dispatchEvent(
+      new WheelEvent('wheel', {
+        deltaY: 200,
+        clientX: width / 2,
+        clientY: height / 2,
+        bubbles: true,
+        cancelable: true,
+      }),
+    )
+    flushAnimationFrames()
+    await flushPromises()
+
+    expect(wrapper.emitted('zoom-change')?.length).toBeGreaterThan(zoomEventCount)
+  })
+
+  it('closes hover and annotation UI when enabled at runtime', async () => {
+    const wrapper = await mountSizedChart(presentationData, {
+      grid: { rowCount: 1, columnCount: 1 },
+      interactionMode: 'annotation',
+    })
+    const overlay = wrapper.get('.waveform-chart__overlay--independent')
+    const { width, height } = setOverlayBounds(overlay)
+
+    overlay.element.dispatchEvent(
+      new MouseEvent('pointermove', {
+        clientX: width / 2,
+        clientY: height / 2,
+        bubbles: true,
+      }),
+    )
+    flushAnimationFrames()
+    await flushPromises()
+    expect(wrapper.find('.waveform-chart__tooltip').exists()).toBe(true)
+
+    overlay.element.dispatchEvent(
+      new MouseEvent('contextmenu', {
+        clientX: width / 2,
+        clientY: height / 2,
+        bubbles: true,
+        cancelable: true,
+      }),
+    )
+    await flushPromises()
+    expect(wrapper.find('.waveform-annotation-editor').exists()).toBe(true)
+
+    await wrapper.setProps({ presentationMode: true })
+    await flushPromises()
+
+    expect(wrapper.find('.waveform-chart__tooltip').exists()).toBe(false)
+    expect(wrapper.find('.waveform-annotation-editor').exists()).toBe(false)
+    expect(wrapper.emitted('point-hover')?.at(-1)).toEqual([null])
+
+    await wrapper.setProps({ presentationMode: false })
+    overlay.element.dispatchEvent(
+      new MouseEvent('pointermove', {
+        clientX: width / 2,
+        clientY: height / 2,
+        bubbles: true,
+      }),
+    )
+    flushAnimationFrames()
+    await flushPromises()
+    expect(wrapper.find('.waveform-chart__tooltip').exists()).toBe(true)
+  })
+})
--- a/src/components/waveformChartCases/viewportBoxAndPan.test.ts
+++ b/src/components/waveformChartCases/viewportBoxAndPan.test.ts
@@ -38,6 +38,21 @@ describe('WaveformChart', () => {
    expect(domain[1]).toBeLessThanOrEqual(1)
    expect(endpoints()[0]).not.toBe(initialEndpoints[0])
    expect(endpoints()[1]).toBe(initialEndpoints[1])
+
+    overlays[0].element.dispatchEvent(
+      new WheelEvent('wheel', {
+        deltaY: 4_000,
+        clientX: firstWidth - 1,
+        clientY: 130,
+        bubbles: true,
+        cancelable: true,
+      }),
+    )
+    flushAnimationFrames()
+    await flushPromises()
+
+    expect(endpoints()[0]).toBe(initialEndpoints[0])
+    expect(endpoints()[1]).toBe(initialEndpoints[1])
  })

  it('emits one zoom-end payload after a shared zoom gesture completes', async () => {
@@ -224,6 +239,56 @@ describe('WaveformChart', () => {
    window.dispatchEvent(new KeyboardEvent('keyup', { code: 'Space' }))
  })

+  it('keeps a fixed Y domain through panning and viewport reset', async () => {
+    const wrapper = await mountSizedChart(
+      {
+        kind: 'points',
+        points: [
+          { x: 0, y: 0 },
+          { x: 1, y: 100 },
+        ],
+      },
+      { pannable: true, yDomain: [3, 97] },
+    )
+    const overlay = wrapper.get('.waveform-chart__overlay--independent')
+    const width = Number(overlay.attributes('width'))
+    const height = Number(overlay.attributes('height'))
+    Object.defineProperty(overlay.element, 'getBoundingClientRect', {
+      value: () => ({ left: 0, top: 0, width, height }),
+    })
+    const yTickLabels = () =>
+      wrapper
+        .get('.waveform-chart__axis--y')
+        .findAll('.tick text')
+        .map((tick) => tick.text())
+    const initialLabels = yTickLabels()
+
+    await wrapper.trigger('pointerenter')
+    window.dispatchEvent(new KeyboardEvent('keydown', { code: 'Space', cancelable: true }))
+    const down = new MouseEvent('pointerdown', {
+      button: 0,
+      clientX: width / 2,
+      clientY: height / 2,
+      bubbles: true,
+    })
+    Object.defineProperty(down, 'pointerId', { value: 34 })
+    overlay.element.dispatchEvent(down)
+    const move = new MouseEvent('pointermove', {
+      clientX: width / 2 + 20,
+      clientY: height / 2 + 40,
+      bubbles: true,
+    })
+    Object.defineProperty(move, 'pointerId', { value: 34 })
+    overlay.element.dispatchEvent(move)
+    await flushPromises()
+
+    expect(yTickLabels()).toEqual(initialLabels)
+    ;(wrapper.vm as unknown as { resetViewport: () => void }).resetViewport()
+    await flushPromises()
+    expect(yTickLabels()).toEqual(initialLabels)
+    window.dispatchEvent(new KeyboardEvent('keyup', { code: 'Space' }))
+  })
+
  it('does not activate pannable on a chart that the pointer is outside', async () => {
    const data: WaveformData = {
      kind: 'points',
--- a/src/components/waveformChartCases/viewportConstraintsAndReset.test.ts
+++ b/src/components/waveformChartCases/viewportConstraintsAndReset.test.ts
@@ -79,8 +79,8 @@ describe('WaveformChart', () => {

    expect(wrapper.emitted('zoom-change')).toBeUndefined()
    expect(wrapper.emitted('zoom-end')).toBeUndefined()
-    expect(wrapper.get('.waveform-chart__axis-endpoint--start').text()).toBe('0.00')
-    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('2.00')
+    expect(wrapper.get('.waveform-chart__axis-endpoint--start').text()).toBe('0')
+    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('2000')
  })

  it('ignores independent viewport dragging', async () => {
@@ -207,7 +207,7 @@ describe('WaveformChart', () => {
    expect(secondDomain[1] - secondDomain[0]).toBeCloseTo(10)
  })

-  it('keeps one global domain while loading narrower and wider windows', async () => {
+  it('zooms a shared viewport back out after loading a narrower data window', async () => {
    const wrapper = await mountSizedChart(
      {
        kind: 'points',
@@ -256,9 +256,57 @@ describe('WaveformChart', () => {

    const eventCount = wrapper.emitted('zoom-change')?.length ?? 0
    await dispatchWheel(4000)
-    const currentDomain = wrapper.emitted('zoom-change')?.at(-1)?.[0] as [number, number]
+    const zoomedOutDomain = wrapper.emitted('zoom-change')?.at(-1)?.[0] as [number, number]
+    expect(wrapper.emitted('zoom-change')?.length ?? 0).toBe(eventCount + 1)
+    expect(zoomedOutDomain[1] - zoomedOutDomain[0]).toBeCloseTo(100)
+
+    const fullDomainEventCount = wrapper.emitted('zoom-change')?.length ?? 0
+    await dispatchWheel(4000)
+    expect(wrapper.emitted('zoom-change')?.length ?? 0).toBe(fullDomainEventCount)
+  })
+
+  it('allows zooming out when the minimum visible point count blocks zooming in', async () => {
+    const wrapper = await mountSizedChart({
+      kind: 'points',
+      points: [
+        { x: 0, y: 0 },
+        { x: 1, y: 10 },
+        { x: 2, y: 20 },
+      ],
+    })
+    const overlay = wrapper.get('.waveform-chart__overlay--independent')
+    const width = Number(overlay.attributes('width'))
+    Object.defineProperty(overlay.element, 'getBoundingClientRect', {
+      value: () => ({ left: 0, top: 0, width, height: 290 }),
+    })
+    const dispatchWheel = async (deltaY: number) => {
+      overlay.element.dispatchEvent(
+        new WheelEvent('wheel', {
+          deltaY,
+          clientX: width / 2,
+          clientY: 145,
+          bubbles: true,
+          cancelable: true,
+        }),
+      )
+      flushAnimationFrames()
+      await flushPromises()
+    }
+
+    await dispatchWheel(-4000)
+    const zoomedDomain = wrapper.emitted('zoom-change')?.at(-1)?.[0] as [number, number]
+    expect(zoomedDomain[1] - zoomedDomain[0]).toBeCloseTo(0.05)
+
+    await wrapper.setProps({ minVisiblePoints: 10 })
+    await flushPromises()
+    const eventCount = wrapper.emitted('zoom-change')?.length ?? 0
+    await dispatchWheel(-1000)
    expect(wrapper.emitted('zoom-change')?.length ?? 0).toBe(eventCount)
-    expect(currentDomain[1] - currentDomain[0]).toBeCloseTo(2.5)
+
+    await dispatchWheel(4000)
+    const zoomedOutDomain = wrapper.emitted('zoom-change')?.at(-1)?.[0] as [number, number]
+    expect(wrapper.emitted('zoom-change')?.length ?? 0).toBe(eventCount + 1)
+    expect(zoomedOutDomain).toEqual([0, 2])
  })

  it('resets a shared viewport on double-click and emits zoom-reset', async () => {
@@ -285,14 +333,14 @@ describe('WaveformChart', () => {
    )
    flushAnimationFrames()
    await flushPromises()
-    expect(wrapper.get('.waveform-chart__axis-endpoint--start').text()).not.toBe('0.00')
+    expect(wrapper.get('.waveform-chart__axis-endpoint--start').text()).not.toBe('0')

    overlay.element.dispatchEvent(new MouseEvent('dblclick', { bubbles: true, cancelable: true }))
    await flushPromises()

    expect(wrapper.emitted('zoom-reset')).toHaveLength(1)
-    expect(wrapper.get('.waveform-chart__axis-endpoint--start').text()).toBe('0.00')
-    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('2.00')
+    expect(wrapper.get('.waveform-chart__axis-endpoint--start').text()).toBe('0')
+    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('2000')
  })

  it('exposes resetViewport for independent tracks', async () => {
@@ -316,13 +364,13 @@ describe('WaveformChart', () => {
    )
    flushAnimationFrames()
    await flushPromises()
-    expect(wrapper.findAll('.waveform-chart__axis-endpoint--start')[0].text()).not.toBe('0.00')
+    expect(wrapper.findAll('.waveform-chart__axis-endpoint--start')[0].text()).not.toBe('0')

    const chart = wrapper.vm as unknown as { resetViewport: () => void }
    chart.resetViewport()
    await flushPromises()

-    expect(wrapper.findAll('.waveform-chart__axis-endpoint--start')[0].text()).toBe('0.00')
-    expect(wrapper.findAll('.waveform-chart__axis-endpoint--end')[0].text()).toBe('1.00')
+    expect(wrapper.findAll('.waveform-chart__axis-endpoint--start')[0].text()).toBe('0')
+    expect(wrapper.findAll('.waveform-chart__axis-endpoint--end')[0].text()).toBe('1000')
  })
 })
--- a/src/components/waveformChartCases/wheelZoomOut.test.ts
+++ b/src/components/waveformChartCases/wheelZoomOut.test.ts
@@ -0,0 +1,114 @@
+import { flushPromises } from '@vue/test-utils'
+import { describe, expect, it, vi } from 'vitest'
+
+import { flushAnimationFrames } from '../../test/setup'
+import { mountSizedChart } from '../../test/waveformChart'
+
+describe('WaveformChart wheel zoom out', () => {
+  it('restores an independent initial domain after replacing data with a narrow window', async () => {
+    const createData = (start: number, end: number) => ({
+      kind: 'series' as const,
+      series: [
+        {
+          id: 'channel-a',
+          name: '通道 A',
+          data: {
+            kind: 'points' as const,
+            points: [
+              { x: start, y: 0 },
+              { x: end, y: 1 },
+            ],
+          },
+        },
+      ],
+    })
+    const wrapper = await mountSizedChart(createData(-5, 5), {
+      displayMode: 'independent',
+      initialXDomain: [-5, 5],
+    })
+    const overlay = wrapper.get('.waveform-chart__overlay--independent')
+    const overlayWidth = Number(overlay.attributes('width'))
+    Object.defineProperty(overlay.element, 'getBoundingClientRect', {
+      value: () => ({ left: 0, top: 0, width: overlayWidth, height: 290 }),
+    })
+    const dispatchWheel = async (deltaY: number) => {
+      overlay.element.dispatchEvent(
+        new WheelEvent('wheel', {
+          deltaY,
+          clientX: overlayWidth / 2,
+          clientY: 145,
+          bubbles: true,
+          cancelable: true,
+        }),
+      )
+      flushAnimationFrames()
+      await flushPromises()
+    }
+    const endpoints = () => ({
+      start: wrapper.get('.waveform-chart__axis-endpoint--start').text(),
+      end: wrapper.get('.waveform-chart__axis-endpoint--end').text(),
+    })
+
+    expect(endpoints()).toEqual({ start: '-5000', end: '5000' })
+    await dispatchWheel(-4000)
+    expect(endpoints()).not.toEqual({ start: '-5000', end: '5000' })
+
+    await wrapper.setProps({ data: createData(-0.125, 0.125) })
+    await flushPromises()
+    await dispatchWheel(4000)
+
+    expect(endpoints()).toEqual({ start: '-5000', end: '5000' })
+  })
+
+  it('emits one zoom-end payload after zooming a shared viewport out', async () => {
+    vi.useFakeTimers()
+    try {
+      const wrapper = await mountSizedChart({
+        kind: 'points',
+        points: [
+          { x: 0, y: 0 },
+          { x: 2, y: 1 },
+        ],
+      })
+      const overlay = wrapper.get('.waveform-chart__overlay')
+      const overlayWidth = Number(overlay.attributes('width'))
+      Object.defineProperty(overlay.element, 'getBoundingClientRect', {
+        value: () => ({ left: 0, top: 0, width: overlayWidth, height: 290 }),
+      })
+      const dispatchWheel = (deltaY: number) =>
+        overlay.element.dispatchEvent(
+          new WheelEvent('wheel', {
+            deltaY,
+            clientX: overlayWidth / 2,
+            clientY: 145,
+            bubbles: true,
+            cancelable: true,
+          }),
+        )
+
+      dispatchWheel(-4000)
+      flushAnimationFrames()
+      await vi.advanceTimersByTimeAsync(200)
+      await flushPromises()
+      const zoomedDomain = wrapper.emitted('zoom-change')?.at(-1)?.[0] as [number, number]
+      const zoomedSpan = zoomedDomain[1] - zoomedDomain[0]
+
+      dispatchWheel(1000)
+      flushAnimationFrames()
+      expect(wrapper.emitted('zoom-end')).toHaveLength(1)
+      await vi.advanceTimersByTimeAsync(200)
+      await flushPromises()
+
+      const zoomedOutPayload = wrapper.emitted('zoom-end')?.at(-1)?.[0] as {
+        start: number
+        end: number
+        gesture: string
+      }
+      expect(wrapper.emitted('zoom-end')).toHaveLength(2)
+      expect(zoomedOutPayload.end - zoomedOutPayload.start).toBeGreaterThan(zoomedSpan)
+      expect(zoomedOutPayload.gesture).toBe('wheel')
+    } finally {
+      vi.useRealTimers()
+    }
+  })
+})
--- a/src/demo/DemoChartHost.vue
+++ b/src/demo/DemoChartHost.vue
@@ -43,6 +43,7 @@ defineExpose({ resetViewport })
      :frame-style="model.frameStyle"
      :axes="model.axes"
      :clean-view="model.cleanView"
+      :presentation-mode="model.presentationMode"
      :show-tooltip="model.showTooltip"
      :zero-line="model.zeroLine"
      :frame-number="model.frameWatermarkVisible ? 1 : undefined"
--- a/src/demo/DemoViewControls.vue
+++ b/src/demo/DemoViewControls.vue
@@ -46,6 +46,10 @@ const model = defineModel<DemoControlPanelModel>('model', { required: true })
        <span>净图</span>
        <Switch v-model:checked="model.cleanView" size="small" aria-label="净图模式" />
      </label>
+      <label class="frame-style-control frame-style-control--switch">
+        <span>展示模式</span>
+        <Switch v-model:checked="model.presentationMode" size="small" aria-label="展示模式" />
+      </label>
    </div>
  </section>
  <section class="control-section">
--- a/src/demo/types.ts
+++ b/src/demo/types.ts
@@ -26,6 +26,7 @@ export interface DemoControlPanelModel {
  overlayMode: WaveformOverlayMode
  showTooltip: boolean
  cleanView: boolean
+  presentationMode: boolean
  selectedSeriesId: string
  selectedLineStyle: WaveformLineStyle
  lineStyleOptions: Array<SelectOption<WaveformLineStyle>>
@@ -87,6 +88,7 @@ export interface DemoChartModel {
  frameStyle: WaveformFrameStyle
  axes: WaveformAxesOptions
  cleanView: boolean
+  presentationMode: boolean
  showTooltip: boolean
  zeroLine: WaveformZeroLineOptions
  frameWatermarkVisible: boolean
--- a/src/demoRoutes.css
+++ b/src/demoRoutes.css
@@ -0,0 +1,197 @@
+.demo-shell {
+  display: grid;
+  grid-template-rows: 48px minmax(0, 1fr);
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+}
+
+.demo-shell__header {
+  z-index: 40;
+  display: flex;
+  gap: 24px;
+  align-items: center;
+  min-width: 0;
+  padding: 0 16px;
+  background: #fff;
+  border-bottom: 1px solid #e4e7ec;
+}
+
+.demo-shell__brand {
+  flex: 0 0 auto;
+  color: #101828;
+  font-size: 14px;
+  font-weight: 700;
+  text-decoration: none;
+}
+
+.demo-shell__nav {
+  display: flex;
+  align-self: stretch;
+  min-width: 0;
+}
+
+.demo-shell__nav a {
+  display: inline-flex;
+  align-items: center;
+  padding: 0 14px;
+  color: #475467;
+  font-size: 13px;
+  text-decoration: none;
+  border-bottom: 2px solid transparent;
+}
+
+.demo-shell__nav a:hover,
+.demo-shell__nav a:focus-visible,
+.demo-shell__nav a.router-link-exact-active {
+  color: #0958d9;
+}
+
+.demo-shell__nav a.router-link-exact-active {
+  background: #f0f7ff;
+  border-bottom-color: #1677ff;
+}
+
+.demo-shell__content {
+  min-width: 0;
+  min-height: 0;
+  overflow: hidden;
+}
+
+.fixed-domain-demo {
+  display: grid;
+  grid-template-rows: auto auto minmax(0, 1fr);
+  gap: 12px;
+  width: 100%;
+  height: 100%;
+  padding: 16px;
+  overflow: hidden;
+}
+
+.fixed-domain-demo__toolbar {
+  display: flex;
+  gap: 24px;
+  align-items: center;
+  justify-content: space-between;
+  min-width: 0;
+}
+
+.fixed-domain-demo__toolbar h1 {
+  margin: 0;
+  color: #101828;
+  font-size: 18px;
+  font-weight: 700;
+  letter-spacing: 0;
+}
+
+.fixed-domain-demo__toolbar p {
+  margin: 4px 0 0;
+  color: #667085;
+  font-size: 12px;
+}
+
+.fixed-domain-demo__range-controls {
+  display: flex;
+  gap: 16px;
+  align-items: center;
+  min-height: 48px;
+  padding: 8px 12px;
+  background: #fff;
+  border: 1px solid #e4e7ec;
+  border-radius: 6px;
+}
+
+.fixed-domain-demo__range-controls label {
+  display: flex;
+  gap: 8px;
+  align-items: center;
+  color: #475467;
+  font-size: 12px;
+}
+
+.fixed-domain-demo__range-controls .ant-input-number {
+  width: 112px;
+}
+
+.fixed-domain-demo__range-controls strong {
+  color: #344054;
+  font-size: 12px;
+}
+
+.fixed-domain-demo__range-controls strong:not(:first-child) {
+  padding-left: 16px;
+  border-left: 1px solid #e4e7ec;
+}
+
+.fixed-domain-demo__auto-state {
+  color: #667085;
+  font-size: 12px;
+}
+
+.fixed-domain-demo__chart {
+  min-width: 0;
+  min-height: 0;
+  overflow: hidden;
+}
+
+.fixed-domain-demo__chart > .waveform-chart {
+  min-height: 0;
+}
+
+@media (max-width: 900px) {
+  .demo-shell {
+    grid-template-rows: 44px minmax(0, 1fr);
+  }
+
+  .demo-shell__header {
+    gap: 8px;
+    padding: 0 8px;
+  }
+
+  .demo-shell__brand {
+    display: none;
+  }
+
+  .demo-shell__nav {
+    width: 100%;
+  }
+
+  .demo-shell__nav a {
+    flex: 1 1 0;
+    justify-content: center;
+    padding: 0 6px;
+  }
+
+  .fixed-domain-demo {
+    gap: 8px;
+    padding: 10px;
+  }
+
+  .fixed-domain-demo__toolbar {
+    display: grid;
+    gap: 8px;
+  }
+
+  .fixed-domain-demo__toolbar .ant-radio-group {
+    display: flex;
+    width: 100%;
+  }
+
+  .fixed-domain-demo__toolbar .ant-radio-button-wrapper {
+    flex: 1 1 0;
+    padding-inline: 6px;
+    text-align: center;
+  }
+
+  .fixed-domain-demo__range-controls {
+    flex-wrap: wrap;
+    gap: 8px 12px;
+  }
+
+  .fixed-domain-demo__range-controls strong:not(:first-child) {
+    width: 100%;
+    padding: 8px 0 0;
+    border-top: 1px solid #e4e7ec;
+    border-left: 0;
+  }
+}
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,7 +1,9 @@
 import { createApp } from 'vue'
 import 'ant-design-vue/dist/antd.css'

-import App from './App.vue'
+import DemoRouterApp from './DemoRouterApp.vue'
+import { router } from './router'
+import './demoRoutes.css'
 import './styles.css'

-createApp(App).mount('#app')
+createApp(DemoRouterApp).use(router).mount('#app')
--- a/src/router.ts
+++ b/src/router.ts
@@ -0,0 +1,21 @@
+import { createRouter, createWebHashHistory, type RouteRecordRaw } from 'vue-router'
+
+import App from './App.vue'
+
+export const routes: RouteRecordRaw[] = [
+  {
+    path: '/',
+    name: 'workspace',
+    component: App,
+  },
+  {
+    path: '/fixed-y-domain',
+    name: 'fixed-y-domain',
+    component: () => import('./views/FixedYDomainDemo.vue'),
+  },
+]
+
+export const router = createRouter({
+  history: createWebHashHistory(),
+  routes,
+})
--- a/src/styles.css
+++ b/src/styles.css
@@ -35,8 +35,7 @@ body {
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 12px;
  width: 100%;
-  height: 100vh;
-  height: 100dvh;
+  height: 100%;
  padding: 12px;
  overflow: hidden;
 }
--- a/src/utils/formatters.test.ts
+++ b/src/utils/formatters.test.ts
@@ -3,69 +3,78 @@ import { describe, expect, it } from 'vitest'
 import {
  formatAnnotationTime,
  formatAxisTime,
-  formatAxisTimeExponent,
  formatEndpointTime,
  formatPlainNumber,
  formatScientificAxisExponent,
  formatScientificAxisLabel,
  formatTooltipNumber,
+  formatTooltipTime,
+  resolveScientificAxisExponent,
  shouldUseScientificAxisLabel,
 } from './formatters'

 describe('waveform number formatters', () => {
  it('uses the reference Y-axis scientific notation boundaries', () => {
    expect(shouldUseScientificAxisLabel(0)).toBe(false)
-    expect(shouldUseScientificAxisLabel(0.009)).toBe(true)
-    expect(shouldUseScientificAxisLabel(0.01)).toBe(false)
-    expect(shouldUseScientificAxisLabel(99.99)).toBe(false)
-    expect(shouldUseScientificAxisLabel(100)).toBe(true)
+    expect(shouldUseScientificAxisLabel(0.000999)).toBe(true)
+    expect(shouldUseScientificAxisLabel(0.001)).toBe(false)
+    expect(shouldUseScientificAxisLabel(999.999)).toBe(false)
+    expect(shouldUseScientificAxisLabel(1000)).toBe(true)
  })

-  it('shares one separate exponent across an axis', () => {
-    const positiveAxis = { axisMin: 0, axisMax: 254 }
-    expect(formatScientificAxisLabel(127, positiveAxis)).toBe('1.27')
-    expect(formatScientificAxisLabel(254, positiveAxis)).toBe('2.54')
-    expect(formatScientificAxisExponent(0, 254)).toBe('E+02')
+  it('prefixes one shared exponent to the largest visible tick', () => {
+    const positiveAxis = { axisMin: 1000, axisMax: 3000 }
+    expect(formatScientificAxisLabel(1000, positiveAxis)).toBe('1')
+    expect(formatScientificAxisLabel(2000, positiveAxis)).toBe('2')
+    expect(formatScientificAxisLabel(3000, positiveAxis)).toBe('E+03 3')
+    expect(formatScientificAxisLabel(2000, { ...positiveAxis, topTickValue: 2000 })).toBe('E+03 2')
+    expect(formatScientificAxisExponent(1000, 3000)).toBe('E+03')
    expect(formatScientificAxisExponent(0, 1e120)).toBe('E+120')

-    const tinyAxis = { axisMin: 0, axisMax: 0.0002 }
-    expect(formatScientificAxisLabel(0.0001, tinyAxis)).toBe('1.00')
-    expect(formatScientificAxisLabel(0.0002, tinyAxis)).toBe('2.00')
-    expect(formatScientificAxisExponent(0, 0.0002)).toBe('E-04')
-
-    const negativeAxis = { axisMin: -254, axisMax: 0 }
-    expect(formatScientificAxisLabel(-254, negativeAxis)).toBe('-2.54')
-    expect(formatScientificAxisLabel(0, negativeAxis)).toBe('0.00')
-    expect(formatScientificAxisExponent(-254, 0)).toBe('E+02')
+    const tinyAxis = { axisMin: 0.0001, axisMax: 0.0003 }
+    expect(formatScientificAxisLabel(0.0001, tinyAxis)).toBe('1')
+    expect(formatScientificAxisLabel(0.0002, tinyAxis)).toBe('2')
+    expect(formatScientificAxisLabel(0.0003, tinyAxis)).toBe('E-04 3')
+    expect(formatScientificAxisExponent(0.0001, 0.0003)).toBe('E-04')
  })

-  it('keeps plain axes at two decimals and removes negative zero', () => {
-    expect(formatScientificAxisLabel(99.99, { axisMin: 0, axisMax: 99.99 })).toBe('99.99')
-    expect(formatScientificAxisLabel(0.01, { axisMin: 0, axisMax: 0.01 })).toBe('0.01')
-    expect(formatScientificAxisLabel(-0.001, { axisMin: -1, axisMax: 1 })).toBe('0.00')
+  it('derives the exponent from Math.max(axisMin, axisMax)', () => {
+    expect(resolveScientificAxisExponent(-9000, -1000)).toBe(3)
+    expect(resolveScientificAxisExponent(-10_000, 3000)).toBe(3)
+    expect(resolveScientificAxisExponent(-1000, 0)).toBeNull()
+    expect(resolveScientificAxisExponent(0, 0)).toBeNull()
+  })
+
+  it('keeps five significant digits, removes trailing zeroes, and limits decimals to four', () => {
+    expect(formatScientificAxisLabel(123.456, { axisMin: 0, axisMax: 999 })).toBe('123.46')
+    expect(formatScientificAxisLabel(1234.56, { axisMin: 0, axisMax: 9999 })).toBe('1.2346')
+    expect(formatScientificAxisLabel(3000, { axisMin: 1000, axisMax: 3000 })).toBe('E+03 3')
+    expect(formatScientificAxisLabel(-0, { axisMin: -1, axisMax: 1 })).toBe('0')
    expect(formatScientificAxisLabel(Number.NaN)).toBe('NaN')
    expect(formatScientificAxisLabel(Number.POSITIVE_INFINITY)).toBe('Infinity')
    expect(formatScientificAxisExponent(0, 0)).toBeNull()
  })

-  it('formats X-axis ticks and endpoints from the selected display unit', () => {
+  it('formats X-axis ticks and endpoints as plain integers in the selected display unit', () => {
    const domain: [number, number] = [0, 1]
-    expect(formatAxisTime(0.5, 'ms', domain)).toBe('0.50')
-    expect(formatEndpointTime(1, domain, 'ms')).toBe('1.00')
-    expect(formatAxisTimeExponent(domain, 'ms')).toBe('E+03')
-    expect(formatAxisTime(0.5, 's', domain)).toBe('0.50')
-    expect(formatEndpointTime(1, domain, 's')).toBe('1.00')
-    expect(formatAxisTimeExponent(domain, 's')).toBeNull()
+    expect(formatAxisTime(0.5004, 'ms', domain)).toBe('500')
+    expect(formatEndpointTime(1, domain, 'ms')).toBe('1000')
+    expect(formatAxisTime(0.5, 's', domain)).toBe('1')
+    expect(formatEndpointTime(1, domain, 's')).toBe('1')

    const tinyDomain: [number, number] = [0, 0.000001]
-    expect(formatEndpointTime(0.000001, tinyDomain, 's')).toBe('1.00')
-    expect(formatAxisTimeExponent(tinyDomain, 's')).toBe('E-06')
+    expect(formatEndpointTime(0.000001, tinyDomain, 's')).toBe('0')
+    expect(formatAxisTime(-0.000001, 's', tinyDomain)).toBe('0')
+    expect(formatAxisTime(1e21, 's')).toBe('1000000000000000000000')
+    expect(formatAxisTime(Number.POSITIVE_INFINITY, 's')).toBe('Infinity')
  })

  it('formats tooltip and raw values for their display contexts', () => {
    expect(formatTooltipNumber(12345.67891)).toBe('12,345.6789')
    expect(formatTooltipNumber(-0)).toBe('0')
    expect(formatTooltipNumber(Number.POSITIVE_INFINITY)).toBe('Infinity')
+    expect(formatTooltipTime(1.234567, 's')).toBe('1.2346')
+    expect(formatTooltipTime(1, 'ms')).toBe('1,000')
    expect(formatPlainNumber(0.0000001)).toBe('0.0000001')
    expect(formatPlainNumber(1e21)).toBe('1000000000000000000000')
    expect(formatPlainNumber(-0)).toBe('0')
--- a/src/utils/formatters.ts
+++ b/src/utils/formatters.ts
@@ -4,22 +4,28 @@
 export type TimeUnit = 'ms' | 's'

 export interface ScientificAxisLabelOptions {
+  /** @deprecated Y-axis labels always use five significant digits before localization. */
  precision?: number
  axisMin?: number
  axisMax?: number
-}
-
-/** @deprecated Use ScientificAxisLabelOptions. */
-export type ScientificYAxisLabelOptions = ScientificAxisLabelOptions & {
  topTickValue?: number
 }

-const DEFAULT_Y_AXIS_PRECISION = 2
-const SCIENTIFIC_MIN_ABSOLUTE_VALUE = 0.01
-const SCIENTIFIC_MAX_PLAIN_ABSOLUTE_VALUE = 100
+/** @deprecated Use ScientificAxisLabelOptions. */
+export type ScientificYAxisLabelOptions = ScientificAxisLabelOptions
+
+const SCIENTIFIC_MIN_ABSOLUTE_VALUE = 0.001
+const SCIENTIFIC_MAX_PLAIN_ABSOLUTE_VALUE = 1000
+const Y_AXIS_NUMBER_FORMATTER = new Intl.NumberFormat('zh-CN', {
+  maximumFractionDigits: 4,
+})
 const TOOLTIP_NUMBER_FORMATTER = new Intl.NumberFormat('zh-CN', {
  maximumFractionDigits: 4,
 })
+const X_AXIS_TIME_FORMATTER = new Intl.NumberFormat('zh-CN', {
+  maximumFractionDigits: 0,
+  useGrouping: false,
+})

 function formatFixedNumber(value: number, precision: number): string {
  const formatted = value.toFixed(Math.max(0, precision))
@@ -38,9 +44,10 @@ export function shouldUseScientificAxisLabel(maxAbsoluteValue: number): boolean
 export function resolveScientificAxisExponent(axisMin?: number, axisMax?: number): number | null {
  if (typeof axisMin !== 'number' || typeof axisMax !== 'number') return null

-  const maxAbsoluteValue = Math.max(Math.abs(axisMin), Math.abs(axisMax))
-  return shouldUseScientificAxisLabel(maxAbsoluteValue)
-    ? Math.floor(Math.log10(maxAbsoluteValue))
+  const maxValue = Math.max(axisMin, axisMax)
+  const absoluteMaxValue = Math.abs(maxValue)
+  return shouldUseScientificAxisLabel(absoluteMaxValue)
+    ? Math.floor(Math.log10(absoluteMaxValue))
    : null
 }

@@ -49,6 +56,13 @@ function formatExponent(exponent: number): string {
  return `E${sign}${Math.abs(exponent).toString().padStart(2, '0')}`
 }

+function formatYAxisNumber(value: number): string {
+  if (Object.is(value, -0)) return '0'
+  const roundedValue = value === 0 ? 0 : Number(value.toPrecision(5))
+  const formatted = Y_AXIS_NUMBER_FORMATTER.format(roundedValue)
+  return formatted === '-0' ? '0' : formatted
+}
+
 /** Format a Y-axis tick, sharing one exponent derived from the complete axis domain. */
 export function formatScientificAxisLabel(
  value: number,
@@ -56,10 +70,13 @@ export function formatScientificAxisLabel(
 ): string {
  if (!Number.isFinite(value)) return String(value)

-  const precision = options.precision ?? DEFAULT_Y_AXIS_PRECISION
  const exponent = resolveScientificAxisExponent(options.axisMin, options.axisMax)
  const scaledValue = exponent === null ? value : value / 10 ** exponent
-  return formatFixedNumber(scaledValue, precision)
+  const formattedValue = formatYAxisNumber(scaledValue)
+  const topTickValue = options.topTickValue ?? options.axisMax
+  return exponent !== null && value === topTickValue
+    ? `${formatExponent(exponent)} ${formattedValue}`
+    : formattedValue
 }

 /** Return the shared E-style multiplier for an axis, or null for a plain axis. */
@@ -86,6 +103,13 @@ export function formatTooltipNumber(value: number): string {
  return TOOLTIP_NUMBER_FORMATTER.format(value)
 }

+/** Format an X-axis time value as a plain integer without grouping separators. */
+function formatAxisTimeValue(value: number): string {
+  if (!Number.isFinite(value)) return String(value)
+  const formatted = X_AXIS_TIME_FORMATTER.format(value)
+  return formatted === '-0' ? '0' : formatted
+}
+
 /** Convert a number to complete plain decimal text without forcing exponential notation. */
 export function formatPlainNumber(value: number): string {
  if (!Number.isFinite(value)) return String(value)
@@ -134,54 +158,34 @@ export function endpointFractionDigits(domain: [number, number], timeUnit: TimeU
 }

 /**
- * 按完整 X 轴显示域格式化端点时间
+ * 将 X 轴端点时间格式化为当前显示单位下的普通整数
 * @param value 时间值（秒）
- * @param domain 数据域
+ * @param _domain 数据域（为保持现有调用签名而保留）
 * @param timeUnit 时间单位
 * @returns 格式化的时间字符串
 */
 export function formatEndpointTime(
  value: number,
-  domain: [number, number],
+  _domain: [number, number],
  timeUnit: TimeUnit,
 ): string {
-  const [axisMin, axisMax] = domain.map((domainValue) => displayTime(domainValue, timeUnit)) as [
-    number,
-    number,
-  ]
-  return formatScientificAxisLabel(displayTime(value, timeUnit), {
-    axisMin,
-    axisMax,
-  })
+  return formatAxisTimeValue(displayTime(value, timeUnit))
 }

 /**
- * 按完整 X 轴显示域格式化时间刻度
+ * 将 X 轴时间刻度格式化为当前显示单位下的普通整数
 * @param value 时间值（秒）
 * @param timeUnit 时间单位
+ * @param _domain 数据域（为保持现有调用签名而保留）
 * @returns 格式化的时间字符串
 */
 export function formatAxisTime(
  value: number,
  timeUnit: TimeUnit,
-  domain?: [number, number],
+  _domain?: [number, number],
 ): string {
-  const displayValue = displayTime(value, timeUnit)
-  const displayDomain = domain?.map((domainValue) => displayTime(domainValue, timeUnit)) as
-    [number, number] | undefined
-  return formatScientificAxisLabel(displayValue, {
-    axisMin: displayDomain?.[0],
-    axisMax: displayDomain?.[1],
-  })
-}
-
-/** Return the shared multiplier for an X-axis domain in its selected display unit. */
-export function formatAxisTimeExponent(
-  domain: [number, number],
-  timeUnit: TimeUnit,
-): string | null {
-  const [axisMin, axisMax] = domain.map((value) => displayTime(value, timeUnit)) as [number, number]
-  return formatScientificAxisExponent(axisMin, axisMax)
+  void _domain
+  return formatAxisTimeValue(displayTime(value, timeUnit))
 }

 /**
@@ -191,11 +195,7 @@ export function formatAxisTimeExponent(
 * @returns 格式化的时间字符串
 */
 export function formatTooltipTime(value: number, timeUnit: TimeUnit): string {
-  const displayValue = displayTime(value, timeUnit)
-  return displayValue.toLocaleString('zh-CN', {
-    minimumFractionDigits: 4,
-    maximumFractionDigits: 4,
-  })
+  return formatTooltipNumber(displayTime(value, timeUnit))
 }

 /** Format an annotation X coordinate in the selected display time unit. */
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -11,7 +11,6 @@ export {
  endpointFractionDigits,
  formatEndpointTime,
  formatAxisTime,
-  formatAxisTimeExponent,
  formatTooltipTime,
  formatAnnotationTime,
  formatPlainNumber,
--- a/src/views/FixedYDomainDemo.test.ts
+++ b/src/views/FixedYDomainDemo.test.ts
@@ -0,0 +1,44 @@
+import { flushPromises, mount } from '@vue/test-utils'
+import { describe, expect, it } from 'vitest'
+
+import { WaveformChart } from '../components'
+import { routes } from '../router'
+import FixedYDomainDemo from './FixedYDomainDemo.vue'
+
+describe('fixed Y-domain demo route', () => {
+  it('registers the example route', () => {
+    expect(routes).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          path: '/fixed-y-domain',
+          name: 'fixed-y-domain',
+        }),
+      ]),
+    )
+  })
+
+  it('switches between global, automatic, and per-channel ranges', async () => {
+    const wrapper = mount(FixedYDomainDemo)
+    await flushPromises()
+    const chart = () => wrapper.getComponent(WaveformChart)
+    const modeInputs = wrapper.get('[aria-label="Y 轴范围模式"]').findAll('input[type="radio"]')
+
+    expect(chart().props('yDomain')).toEqual([-80, 80])
+    expect(chart().props('yDomains')).toBeUndefined()
+
+    await modeInputs[0]?.setValue(true)
+    await flushPromises()
+    expect(chart().props('yDomain')).toBeUndefined()
+    expect(chart().props('yDomains')).toBeUndefined()
+
+    await modeInputs[2]?.setValue(true)
+    await flushPromises()
+    expect(chart().props('yDomain')).toBeUndefined()
+    expect(chart().props('yDomains')).toEqual({
+      voltage: [-65, 65],
+      current: [-260, 260],
+    })
+
+    wrapper.unmount()
+  })
+})
--- a/src/views/FixedYDomainDemo.vue
+++ b/src/views/FixedYDomainDemo.vue
@@ -0,0 +1,149 @@
+<script setup lang="ts">
+import { computed, ref } from 'vue'
+import { InputNumber, RadioButton, RadioGroup } from 'ant-design-vue'
+
+import { WaveformChart, type WaveformData } from '../components'
+
+type RangeMode = 'auto' | 'global' | 'channel'
+
+const rangeMode = ref<RangeMode>('global')
+const globalMinimum = ref(-80)
+const globalMaximum = ref(80)
+const voltageMinimum = ref(-65)
+const voltageMaximum = ref(65)
+const currentMinimum = ref(-260)
+const currentMaximum = ref(260)
+
+const chartData: WaveformData = {
+  kind: 'series',
+  series: [
+    {
+      id: 'voltage',
+      name: '电压',
+      unit: 'V',
+      color: '#1677ff',
+      data: {
+        kind: 'points',
+        points: Array.from({ length: 800 }, (_, index) => {
+          const x = index / 80
+          const pulse = index % 240 >= 112 && index % 240 <= 122 ? 58 : 0
+          return { x, y: 48 * Math.sin(x * Math.PI * 1.5) + pulse }
+        }),
+      },
+    },
+    {
+      id: 'current',
+      name: '电流',
+      unit: 'mA',
+      color: '#d4380d',
+      data: {
+        kind: 'points',
+        points: Array.from({ length: 800 }, (_, index) => {
+          const x = index / 80
+          const pulse = index % 300 >= 184 && index % 300 <= 192 ? -210 : 0
+          return { x, y: 185 * Math.cos(x * Math.PI) + pulse }
+        }),
+      },
+    },
+  ],
+}
+
+function orderedDomain(minimum: number, maximum: number): [number, number] | undefined {
+  if (!Number.isFinite(minimum) || !Number.isFinite(maximum) || minimum === maximum) {
+    return undefined
+  }
+  return minimum < maximum ? [minimum, maximum] : [maximum, minimum]
+}
+
+const yDomain = computed<[number, number] | undefined>(() =>
+  rangeMode.value === 'global'
+    ? orderedDomain(globalMinimum.value, globalMaximum.value)
+    : undefined,
+)
+const yDomains = computed<Record<string, [number, number]> | undefined>(() => {
+  if (rangeMode.value !== 'channel') return undefined
+  const voltage = orderedDomain(voltageMinimum.value, voltageMaximum.value)
+  const current = orderedDomain(currentMinimum.value, currentMaximum.value)
+  return {
+    ...(voltage ? { voltage } : {}),
+    ...(current ? { current } : {}),
+  }
+})
+const rangeSummary = computed(() => {
+  if (rangeMode.value === 'auto') return '自动计算'
+  if (rangeMode.value === 'global') {
+    return yDomain.value ? `${yDomain.value[0]} ～ ${yDomain.value[1]}` : '自动计算'
+  }
+  const voltage = yDomains.value?.voltage
+  const current = yDomains.value?.current
+  return `电压 ${voltage?.[0] ?? '-'} ～ ${voltage?.[1] ?? '-'} V · 电流 ${
+    current?.[0] ?? '-'
+  } ～ ${current?.[1] ?? '-'} mA`
+})
+</script>
+
+<template>
+  <main class="fixed-domain-demo">
+    <header class="fixed-domain-demo__toolbar">
+      <div>
+        <h1>固定振幅范围</h1>
+        <p>当前范围：{{ rangeSummary }}</p>
+      </div>
+      <RadioGroup v-model:value="rangeMode" button-style="solid" aria-label="Y 轴范围模式">
+        <RadioButton value="auto">自动</RadioButton>
+        <RadioButton value="global">全局固定</RadioButton>
+        <RadioButton value="channel">按通道固定</RadioButton>
+      </RadioGroup>
+    </header>
+
+    <section class="fixed-domain-demo__range-controls">
+      <template v-if="rangeMode === 'global'">
+        <label>
+          <span>下限</span>
+          <InputNumber v-model:value="globalMinimum" aria-label="全局振幅下限" />
+        </label>
+        <label>
+          <span>上限</span>
+          <InputNumber v-model:value="globalMaximum" aria-label="全局振幅上限" />
+        </label>
+      </template>
+      <template v-else-if="rangeMode === 'channel'">
+        <strong>电压</strong>
+        <label>
+          <span>下限</span>
+          <InputNumber v-model:value="voltageMinimum" aria-label="电压振幅下限" />
+        </label>
+        <label>
+          <span>上限</span>
+          <InputNumber v-model:value="voltageMaximum" aria-label="电压振幅上限" />
+        </label>
+        <strong>电流</strong>
+        <label>
+          <span>下限</span>
+          <InputNumber v-model:value="currentMinimum" aria-label="电流振幅下限" />
+        </label>
+        <label>
+          <span>上限</span>
+          <InputNumber v-model:value="currentMaximum" aria-label="电流振幅上限" />
+        </label>
+      </template>
+      <span v-else class="fixed-domain-demo__auto-state">根据可见数据自动计算</span>
+    </section>
+
+    <section class="fixed-domain-demo__chart">
+      <WaveformChart
+        :data="chartData"
+        :y-domain="yDomain"
+        :y-domains="yDomains"
+        display-mode="independent"
+        :grid="{ rowCount: 2, columnCount: 1, showPagination: false }"
+        :title="{ visible: true, text: '振幅上下限示例', align: 'left' }"
+        :zero-line="{ visible: true, color: '#98a2b3', width: 1, dash: '5 4' }"
+        :legend="{ position: 'top-right', backgroundColor: 'rgba(255,255,255,0.8)' }"
+        x-label="时间（s）"
+        time-unit="s"
+        :show-tooltip="true"
+      />
+    </section>
+  </main>
+</template>
Author	SHA1	Message	Date
李启源	c5aa3c662a	fix(chart): refine axis number formatting All checks were successful Package component / package (push) Successful in 4m2s Details	2026-08-04 11:28:42 +08:00
李启源	f98c264562	fix(chart): support wheel zoom out All checks were successful Package component / package (push) Successful in 3m50s Details	2026-07-31 12:07:08 +08:00
李启源	979b698156	fix(chart): retain axes in clean view All checks were successful Package component / package (push) Successful in 3m58s Details	2026-07-31 10:27:27 +08:00
李启源	a12002ba11	feat(chart): support fixed y-axis domains All checks were successful Package component / package (push) Successful in 9m22s Details	2026-07-29 15:50:25 +08:00
李启源	6cbb1e7668	chore(release): bump version to 0.1.24 All checks were successful Package component / package (push) Successful in 3m50s Details	2026-07-29 12:27:30 +08:00
李启源	f97ff24cdf	feat(chart): add presentation mode Some checks failed Package component / package (push) Failing after 50s Details	2026-07-29 12:12:03 +08:00
李启源	312e7fde52	chore(release): bump version to 0.1.22 Some checks failed Package component / package (push) Failing after 3m55s Details	2026-07-29 11:16:27 +08:00