feat(annotation): add serialization support

fix(chart): preserve clean view geometry
feat(chart): add zero line and clean view
2026-07-21 23:15:06 +08:00 · 2026-07-21 22:26:34 +08:00 · 2026-07-21 20:44:08 +08:00
19 changed files with 751 additions and 210 deletions
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ pnpm add waveform-analysis vue d3 ant-design-vue vue3-colorpicker
 组件库支持以下运行时版本：

 | 依赖           | 支持版本      |
-| --- | --- |
+| -------------- | ------------- |
 | Vue            | `>=3.2.33 <4` |
 | Ant Design Vue | `>=3.2.20 <4` |

@@ -104,12 +104,15 @@ const data = ref<WaveformData>({
 | `grid`                            | `WaveformGridOptions`                       | `{ rowCount: 2, columnCount: 1, showPagination: true }` | 网格和分页                        |
 | `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              |
+| `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              |
 | `annotations`                     | `WaveformAnnotation[]`                      | `[]`                                                    | 受控标注数据                      |
 | `hiddenSeriesIds`                 | `string[]`                                  | 未设置                                                  | 受控隐藏系列 ID                   |
 | `defaultHiddenSeriesIds`          | `string[]`                                  | `[]`                                                    | 非受控模式的初始隐藏系列          |

 所有公开类型均可从包入口导入，例如 `WaveformData`、`WaveformSeries`、
-`WaveformAnnotation`、`WaveformRenderingOptions` 和 `WaveformGridOptions`。
+`WaveformAnnotation`、`WaveformRenderingOptions`、`WaveformZeroLineOptions` 和
+`WaveformGridOptions`。

 ### 数据结构

@@ -381,6 +384,35 @@ const hiddenSeriesIds = ref<string[]>([])
 显隐状态以规范化后的 `series.id` 为键。要在数据刷新和重新排序后稳定保留状态，每个系列都应
 提供全图唯一且稳定的显式 `id`；自动生成的索引 ID 或重复 ID 添加的后缀不保证跨排序稳定。

+### 零值参考线与净图
+
+`zeroLine` 用于绘制 `y = 0` 的水平参考线，默认隐藏。参考线只在对应 Y 轴的当前 domain
+包含 0 时渲染，不会为了显示参考线而扩展数据范围。多值轴模式下，每根可见 Y 轴分别按自身
+scale 定位零线：
+
+```vue
+<WaveformChart
+  :data="chartData"
+  :zero-line="{
+    visible: true,
+    color: '#98a2b3',
+    width: 1,
+    dash: '6 4',
+  }"
+/>
+```
+
+`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：
+
+```vue
+<WaveformChart :data="chartData" :clean-view="cleanViewEnabled" />
+```
+
 ### 网格、分页与交互模式

 `grid` 控制独立图框的行列数（范围 `1–10`）以及是否显示分页器。默认值为 `2` 行、
@@ -390,15 +422,13 @@ const hiddenSeriesIds = ref<string[]>([])
 <WaveformChart
  :data="chartData"
  :grid="{ rowCount: 2, columnCount: 2, showPagination: true }"
-  v-model:interaction-mode="interactionMode"
-  :show-annotation-toolbar="true"
+  :interaction-mode="interactionMode"
 />
 ```

-`interactionMode` 可选 `zoom` 或 `annotation`。默认不渲染标注工具栏，推荐通过右键
-打开标注编辑器；设置 `showAnnotationToolbar` 可显示兼容工具栏。`zoomable` 和
-`showTooltip` 可分别关闭缩放和 tooltip。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”。
+`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` 和 `showTooltip` 可分别关闭缩放和 tooltip。
+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

@@ -437,7 +467,13 @@ const hiddenSeriesIds = ref<string[]>([])
 ```vue
 <script setup lang="ts">
 import { ref } from 'vue'
-import { WaveformChart, type WaveformAnnotation, type WaveformInteractionMode } from './index'
+import {
+  parseWaveformAnnotations,
+  serializeWaveformAnnotations,
+  WaveformChart,
+  type WaveformAnnotation,
+  type WaveformInteractionMode,
+} from './index'

 const annotations = ref<WaveformAnnotation[]>([])
 const annotationsVisible = ref(true)
@@ -448,16 +484,30 @@ const interactionMode = ref<WaveformInteractionMode>('zoom')
  <WaveformChart
    :data="chartData"
    v-model:annotations="annotations"
-    v-model:annotations-visible="annotationsVisible"
-    v-model:interaction-mode="interactionMode"
+    :annotations-visible="annotationsVisible"
+    :interaction-mode="interactionMode"
  />
 </template>
 ```

-默认不显示标注工具栏；右键绘图区任意位置即可弹出居中编辑器，标注会吸附到当前 X 位置最近的真实采样点，右键已有标注可以编辑或删除。需要兼容旧工具栏时可显式设置 `showAnnotationToolbar`。
+标注默认显示。右键绘图区任意位置即可弹出居中编辑器，标注会吸附到当前 X 位置最近的真实采样点，右键已有标注可以编辑或删除。
 标注框可以直接拖动进行手动避让，拖动只改变标签框位置，不会改变 `x/y` 数据锚点；偏移会以 `labelOffsetX/labelOffsetY` 像素字段保存在标注中。标注文本最多 40 个字符，边框色、文字色和背景色均支持取色与透明度调整。组件只负责内存中的受控数据，
 业务层负责会话或后端持久化。

+标注可以序列化为带版本号的 JSON，并在解析成功后整体替换当前数据：
+
+```ts
+const exportedJson = serializeWaveformAnnotations(annotations.value)
+
+async function importAnnotationFile(file: File) {
+  annotations.value = parseWaveformAnnotations(await file.text())
+}
+```
+
+导出格式为 `{ version: 1, annotations: [...] }`。解析会验证全部标注；文件格式、版本或任意
+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。
 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。

@@ -475,8 +525,8 @@ 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,
 | `series-visibility-change`                                      | 图例切换曲线显隐时触发                                         |
 | `annotation-create` / `annotation-update` / `annotation-delete` | 标注新增、更新或删除                                           |

-`annotations`、`annotations-visible`、`interaction-mode` 和 `hidden-series-ids` 均支持
-`v-model`；业务层应负责将标注和显隐状态持久化。
+`annotations` 和 `hidden-series-ids` 支持 `v-model`；`annotations-visible` 与
+`interaction-mode` 是受控输入属性。业务层应负责将标注和显隐状态持久化。

 ## 项目结构

--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
  "name": "waveform-analysis",
-  "version": "0.1.13",
+  "version": "0.1.14",
  "main": "./dist/index.cjs",
  "module": "./dist/index.js",
  "types": "./dist/types/index.d.ts",
--- a/src/App.test.ts
+++ b/src/App.test.ts
@@ -41,6 +41,12 @@ describe('App workspace layout', { timeout: 20_000 }, () => {
    expect(panel.find('[aria-label="波形展示方式"]').exists()).toBe(true)
    expect(panel.find('[aria-label="波形叠加方式"]').exists()).toBe(true)
    expect(panel.find('[aria-label="波形网格尺寸"]').exists()).toBe(true)
+    expect(panel.find('[aria-label="净图模式"]').exists()).toBe(true)
+    expect(panel.find('[aria-label="显示零值参考线"]').exists()).toBe(true)
+    const zeroLineControls = panel.get('.zero-line-controls')
+    expect(zeroLineControls.findAllComponents(ColorPicker)).toHaveLength(1)
+    expect(zeroLineControls.find('[aria-label="零值参考线线宽"]').exists()).toBe(true)
+    expect(zeroLineControls.find('[aria-label="零值参考线线型"]').exists()).toBe(true)
    expect(frameControls.findAllComponents(ColorPicker)).toHaveLength(2)
    expect(frameControls.text()).toContain('边框颜色')
    expect(frameControls.text()).toContain('背景颜色')
@@ -71,6 +77,23 @@ describe('App workspace layout', { timeout: 20_000 }, () => {
    wrapper.unmount()
  })

+  it('passes clean view 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('zeroLine')).toMatchObject({ visible: false, color: '#98a2b3', width: 1 })
+
+    await wrapper.get('[aria-label="净图模式"]').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('zeroLine')).toMatchObject({ visible: true, color: '#98a2b3', width: 1 })
+    wrapper.unmount()
+  })
+
  it('switches overlaid tracks between single-axis and multi-axis rendering', async () => {
    const wrapper = mount(App)
    await flushPromises()
--- a/src/App.vue
+++ b/src/App.vue
@@ -17,6 +17,7 @@ import {
  type WaveformSeries,
  type WaveformTitleOptions,
  type WaveformZoomEndPayload,
+  type WaveformZeroLineOptions,
 } from './components'
 import chartWaveformsJson from './data/chartWaveforms.json'
 import demoWaveformsJson from './data/demoWaveforms.json'
@@ -53,6 +54,11 @@ const frameBackgroundColor = ref('rgba(255, 255, 255, 0)')
 const frameWatermarkVisible = ref(true)
 const annotations = ref<WaveformAnnotation[]>([])
 const annotationsVisible = ref(true)
+const cleanView = ref(false)
+const zeroLineVisible = ref(false)
+const zeroLineColor = ref('#98a2b3')
+const zeroLineWidth = ref(1)
+const zeroLineDash = ref('6 4')
 const interactionMode = ref<WaveformInteractionMode>('zoom')
 const legendPosition = ref<WaveformLegendPosition>('top-right')
 const legendOrientation = ref<WaveformLegendOrientation>('auto')
@@ -88,6 +94,11 @@ const frameBorderStyleOptions = [
  { label: '实线', value: 'solid' },
  { label: '虚线', value: 'dashed' },
 ]
+const zeroLineDashOptions = [
+  { label: '虚线', value: '6 4' },
+  { label: '点划线', value: '2 3' },
+  { label: '实线', value: '' },
+]
 const titleAlignOptions: Array<{
  label: string
  value: NonNullable<WaveformTitleOptions['align']>
@@ -109,6 +120,12 @@ const frameStyle = computed<WaveformFrameStyle>(() => ({
  borderStyle: frameBorderStyle.value,
  backgroundColor: frameBackgroundColor.value,
 }))
+const zeroLine = computed<WaveformZeroLineOptions>(() => ({
+  visible: zeroLineVisible.value,
+  color: zeroLineColor.value,
+  width: zeroLineWidth.value,
+  dash: zeroLineDash.value,
+}))

 const seriesStylePresets: Array<Pick<WaveformSeries, 'lineType' | 'pointType' | 'errorBar'>> = [
  { lineType: 'none', pointType: 'triangle', errorBar: { visible: true } },
@@ -353,6 +370,53 @@ onBeforeUnmount(() => window.removeEventListener('keydown', handleWindowKeydown)
        <section class="control-section">
          <h2>视图</h2>
          <Button block aria-label="重置波形视图" @click="resetWaveformViewport">重置视图</Button>
+          <div class="auxiliary-style-controls" style="margin-top: 10px">
+            <label class="frame-style-control frame-style-control--switch">
+              <span>净图</span>
+              <Switch v-model:checked="cleanView" size="small" aria-label="净图模式" />
+            </label>
+          </div>
+        </section>
+
+        <section class="control-section">
+          <div class="control-section__header">
+            <h2>零值参考线</h2>
+            <Switch v-model:checked="zeroLineVisible" size="small" aria-label="显示零值参考线" />
+          </div>
+          <div class="auxiliary-style-controls zero-line-controls" style="margin-top: 10px">
+            <label class="frame-style-control">
+              <span>颜色</span>
+              <ColorPicker
+                v-model:pure-color="zeroLineColor"
+                aria-label="零值参考线颜色"
+                use-type="pure"
+                picker-type="chrome"
+                format="hex"
+                :disable-alpha="true"
+                :blur-close="true"
+              />
+            </label>
+            <label class="frame-style-control">
+              <span>线宽</span>
+              <InputNumber
+                v-model:value="zeroLineWidth"
+                :min="0.5"
+                :max="10"
+                :step="0.5"
+                size="small"
+                aria-label="零值参考线线宽"
+              />
+            </label>
+            <label class="frame-style-control">
+              <span>线型</span>
+              <Select
+                v-model:value="zeroLineDash"
+                :options="zeroLineDashOptions"
+                size="small"
+                aria-label="零值参考线线型"
+              />
+            </label>
+          </div>
        </section>

        <section class="control-section">
@@ -602,10 +666,12 @@ onBeforeUnmount(() => window.removeEventListener('keydown', handleWindowKeydown)
          interactive: true,
        }"
        :frame-style="frameStyle"
+        :clean-view="cleanView"
+        :zero-line="zeroLine"
        :frame-number="frameWatermarkVisible ? 1 : undefined"
        v-model:annotations="annotations"
-        v-model:annotations-visible="annotationsVisible"
-        v-model:interaction-mode="interactionMode"
+        :annotations-visible="annotationsVisible"
+        :interaction-mode="interactionMode"
        v-model:hidden-series-ids="hiddenSeriesIds"
        @zoom-end="handleZoomEnd"
        @zoom-reset="resetWaveformViewport"
--- a/src/components/WaveformChart.test.ts
+++ b/src/components/WaveformChart.test.ts
@@ -220,6 +220,200 @@ describe('WaveformChart', () => {
    second.unmount()
  })

+  it('renders a configurable zero line only when the Y domain contains zero', async () => {
+    const wrapper = await mountSizedChart(
+      {
+        kind: 'points',
+        points: [
+          { x: 0, y: -2 },
+          { x: 1, y: 4 },
+        ],
+      },
+      { zeroLine: { visible: true, color: '#475467', width: 2, dash: '3 2' } },
+    )
+
+    const zeroLine = wrapper.get('.waveform-chart__zero-line')
+    expect(zeroLine.attributes()).toMatchObject({
+      stroke: '#475467',
+      'stroke-width': '2',
+      'stroke-dasharray': '3 2',
+      'data-y-axis-index': '0',
+    })
+    expect(zeroLine.attributes('y1')).toBe(zeroLine.attributes('y2'))
+
+    await wrapper.setProps({ zeroLine: { visible: false } })
+    expect(wrapper.find('.waveform-chart__zero-line').exists()).toBe(false)
+
+    const positive = await mountSizedChart(
+      {
+        kind: 'points',
+        points: [
+          { x: 0, y: 2 },
+          { x: 1, y: 4 },
+        ],
+      },
+      { zeroLine: { visible: true } },
+    )
+    expect(positive.find('.waveform-chart__zero-line').exists()).toBe(false)
+  })
+
+  it('renders zero lines from each visible Y axis in multi-axis mode', async () => {
+    const wrapper = await mountSizedChart(
+      {
+        kind: 'series',
+        series: [
+          {
+            id: 'small',
+            trackId: 'overlay',
+            name: 'small',
+            data: {
+              kind: 'points',
+              points: [
+                { x: 0, y: -1 },
+                { x: 1, y: 3 },
+              ],
+            },
+          },
+          {
+            id: 'large',
+            trackId: 'overlay',
+            name: 'large',
+            data: {
+              kind: 'points',
+              points: [
+                { x: 0, y: -10 },
+                { x: 1, y: 2 },
+              ],
+            },
+          },
+        ],
+      },
+      { overlayMode: 'multi-axis', zeroLine: { visible: true } },
+    )
+
+    const zeroLines = wrapper.findAll('.waveform-chart__zero-line')
+    expect(zeroLines).toHaveLength(2)
+    expect(zeroLines.map((line) => line.attributes('data-y-axis-index'))).toEqual(['0', '1'])
+    expect(zeroLines[0].attributes('y1')).not.toBe(zeroLines[1].attributes('y1'))
+  })
+
+  it('preserves a titled multi-axis plot and hides auxiliary layers in clean view', async () => {
+    const data: WaveformData = {
+      kind: 'series',
+      series: [
+        {
+          id: 'first',
+          trackId: 'overlay',
+          name: 'first',
+          data: {
+            kind: 'points',
+            points: [
+              { x: 0, y: -1 },
+              { x: 1, y: 1 },
+            ],
+          },
+        },
+        {
+          id: 'second',
+          trackId: 'overlay',
+          name: 'second',
+          data: {
+            kind: 'points',
+            points: [
+              { x: 0, y: 1 },
+              { x: 1, y: 2 },
+            ],
+          },
+        },
+        {
+          id: 'third',
+          name: 'third',
+          data: {
+            kind: 'points',
+            points: [
+              { x: 0, y: 2 },
+              { x: 1, y: 3 },
+            ],
+          },
+        },
+      ],
+    }
+    const sharedProps = {
+      grid: { rowCount: 1, columnCount: 1, showPagination: true },
+      overlayMode: 'multi-axis' as const,
+      frameNumber: 1,
+      annotations: [{ id: 'note', seriesId: 'first', x: 0.5, y: 0, text: 'hidden note' }],
+      zeroLine: { visible: true },
+      title: { text: 'hidden title' },
+    }
+    const regularWrapper = await mountSizedChart(data, sharedProps)
+    const wrapper = await mountSizedChart(data, {
+      ...sharedProps,
+      cleanView: true,
+    })
+
+    const regularTrack = regularWrapper.get('.waveform-chart__track')
+    const cleanTrack = wrapper.get('.waveform-chart__track')
+    const geometryAttributes = [
+      'data-track-left',
+      'data-track-top',
+      'data-track-width',
+      'data-track-height',
+    ]
+
+    expect(wrapper.get('.waveform-chart').attributes('data-chart-left-margin')).toBe(
+      regularWrapper.get('.waveform-chart').attributes('data-chart-left-margin'),
+    )
+    expect(wrapper.get('.waveform-chart').attributes('data-title-area-height')).toBe(
+      regularWrapper.get('.waveform-chart').attributes('data-title-area-height'),
+    )
+    geometryAttributes.forEach((attribute) => {
+      expect(cleanTrack.attributes(attribute)).toBe(regularTrack.attributes(attribute))
+    })
+    expect(wrapper.get('.waveform-chart').classes()).toContain('waveform-chart--clean')
+    expect(getComputedStyle(wrapper.get('.waveform-chart').element).borderColor).toBe(
+      'rgba(0, 0, 0, 0)',
+    )
+    expect(wrapper.findAll('.waveform-chart__series')).toHaveLength(2)
+    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)
+    expect(wrapper.find('.waveform-chart__grid').exists()).toBe(false)
+    expect(wrapper.find('.waveform-chart__plot-frame').exists()).toBe(false)
+    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__zero-line').exists()).toBe(false)
+    expect(wrapper.find('.waveform-annotation-layer').exists()).toBe(false)
+    expect(wrapper.find('.ant-pagination').exists()).toBe(false)
+  })
+
+  it('preserves every track geometry in a multi-column clean view', async () => {
+    const props = {
+      displayMode: 'independent' as const,
+      grid: { rowCount: 2, columnCount: 2 },
+    }
+    const regularWrapper = await mountSizedChart(gridSeries(4), props)
+    const cleanWrapper = await mountSizedChart(gridSeries(4), { ...props, cleanView: true })
+    const geometryAttributes = [
+      'data-track-left',
+      'data-track-top',
+      'data-track-width',
+      'data-track-height',
+    ]
+    const regularTracks = regularWrapper.findAll('.waveform-chart__track')
+    const cleanTracks = cleanWrapper.findAll('.waveform-chart__track')
+
+    expect(cleanTracks).toHaveLength(regularTracks.length)
+    cleanTracks.forEach((track, index) => {
+      geometryAttributes.forEach((attribute) => {
+        expect(track.attributes(attribute)).toBe(regularTracks[index].attributes(attribute))
+      })
+    })
+  })
+
  it('places start, middle, and end step transitions at the expected X positions', async () => {
    const lineTypes = ['step-start', 'step-middle', 'step-end', 'step-after'] as const
    const wrapper = await mountSizedChart({
@@ -1383,7 +1577,6 @@ describe('WaveformChart', () => {

    expect(initialPath).toContain('L')
    expect(wrapper.get('.waveform-chart__svg').attributes('width')).toBe('800')
-    expect(wrapper.find('.waveform-annotation-toolbar').exists()).toBe(false)
    expect(wrapper.attributes('data-interaction-mode')).toBeUndefined()

    resizeObservers.at(-1)?.resize(500, 360)
@@ -1682,7 +1875,6 @@ describe('WaveformChart', () => {
    const wrapper = await mountSizedChart(gridSeries(2), {
      title: { text: '波形标题' },
      grid: { rowCount: 1, columnCount: 1, showPagination: true },
-      showAnnotationToolbar: true,
    })

    for (const selector of [
@@ -1690,7 +1882,6 @@ describe('WaveformChart', () => {
      '.waveform-chart__grid',
      '.waveform-chart__overlay',
      '.waveform-chart__pagination',
-      '.waveform-annotation-toolbar',
    ]) {
      const event = new MouseEvent('contextmenu', { bubbles: true, cancelable: true })
      const dispatched = wrapper.get(selector).element.dispatchEvent(event)
@@ -2216,8 +2407,12 @@ describe('WaveformChart', () => {
      )
      expect(wrapper.emitted('zoom-end')).toBeUndefined()
      flushAnimationFrames()
-      // Wait for zoom-end debounce (internal throttle + flush)
-      await vi.advanceTimersByTimeAsync(200)
+      // The wheel debounce is 200ms: it must not end early, then ends at the boundary.
+      await vi.advanceTimersByTimeAsync(199)
+      await flushPromises()
+      expect(wrapper.emitted('zoom-end')).toBeUndefined()
+
+      await vi.advanceTimersByTimeAsync(1)
      await flushPromises()

      const endEvents = wrapper.emitted('zoom-end') ?? []
@@ -3359,23 +3554,6 @@ describe('WaveformChart', () => {
    expect(overlay.classes()).not.toContain('is-zoomable')
  })

-  it('keeps the annotation toolbar available behind the compatibility prop', async () => {
-    const wrapper = await mountSizedChart(
-      {
-        kind: 'points',
-        points: [
-          { x: 0, y: 0 },
-          { x: 1, y: 5 },
-        ],
-      },
-      { showAnnotationToolbar: true },
-    )
-
-    expect(wrapper.find('.waveform-annotation-toolbar').exists()).toBe(true)
-    await wrapper.get('button[aria-label="添加标注"]').trigger('click')
-    expect(wrapper.attributes('data-interaction-mode')).toBe('annotation')
-  })
-
  it('creates a controlled annotation from externally selected annotation mode', async () => {
    const wrapper = await mountSizedChart(
      {
@@ -3728,7 +3906,6 @@ describe('WaveformChart', () => {
      },
      {
        interactionMode: 'annotation',
-        showAnnotationToolbar: true,
        annotations: [
          { id: 'valid', seriesId: 'series-0', x: 1, y: 5, text: '显示' },
          { id: 'unknown', seriesId: 'missing', x: 1, y: 5, text: '不显示' },
@@ -3738,10 +3915,8 @@ describe('WaveformChart', () => {

    expect(wrapper.attributes('data-interaction-mode')).toBe('annotation')
    expect(wrapper.findAll('.waveform-annotation')).toHaveLength(1)
+    expect(wrapper.find('.waveform-annotation-toolbar').exists()).toBe(false)
    expect(wrapper.get('.waveform-chart__overlay').classes()).toContain('is-annotating')
-    await wrapper.get('button[aria-label="隐藏标注"]').trigger('click')
-    expect(wrapper.emitted('update:annotations-visible')?.at(-1)).toEqual([false])
-
    await wrapper.setProps({ annotationsVisible: false })
    expect(wrapper.find('.waveform-annotation').exists()).toBe(false)
  })
--- a/src/components/WaveformChart.vue
+++ b/src/components/WaveformChart.vue
@@ -38,6 +38,7 @@ import {
  type WaveformPoint,
  type WaveformRenderingOptions,
  type WaveformTitleOptions,
+  type WaveformZeroLineOptions,
  type WaveformZoomEndPayload,
 } from './data/types'
 import {
@@ -50,7 +51,6 @@ import {
  type AnnotationEditorAnchor,
  WaveformAnnotationContextMenu,
  WaveformAnnotationLayer,
-  WaveformAnnotationToolbar,
  type AnnotationHit,
  type AnnotationSeriesCandidate,
  type AnnotationSeriesInfo,
@@ -102,13 +102,14 @@ const props = withDefaults(
    annotations?: WaveformAnnotation[]
    annotationsVisible?: boolean
    interactionMode?: WaveformInteractionMode
-    showAnnotationToolbar?: boolean
    grid?: WaveformGridOptions
    rendering?: WaveformRenderingOptions
    title?: WaveformTitleOptions
    legend?: WaveformLegendOptions
    hiddenSeriesIds?: string[]
    defaultHiddenSeriesIds?: string[]
+    cleanView?: boolean
+    zeroLine?: WaveformZeroLineOptions
  }>(),
  {
    displayMode: 'independent',
@@ -123,11 +124,12 @@ const props = withDefaults(
    annotations: () => [],
    annotationsVisible: true,
    interactionMode: undefined,
-    showAnnotationToolbar: false,
    grid: () => ({ rowCount: 2, columnCount: 1, showPagination: true }),
    rendering: () => ({}),
    legend: () => ({ position: 'top-right', orientation: 'auto' }),
    defaultHiddenSeriesIds: () => [],
+    cleanView: false,
+    zeroLine: () => ({ visible: false }),
  },
 )

@@ -137,8 +139,6 @@ const emit = defineEmits<{
  'zoom-end': [payload: WaveformZoomEndPayload]
  'zoom-reset': []
  'update:annotations': [annotations: WaveformAnnotation[]]
-  'update:annotations-visible': [visible: boolean]
-  'update:interaction-mode': [mode: WaveformInteractionMode]
  'update:hidden-series-ids': [ids: string[]]
  'series-visibility-change': [
    payload: {
@@ -175,7 +175,6 @@ const currentPage = ref(1)
 const resizeObserver = shallowRef<ResizeObserver>()
 const zoomBehaviors = new Map<number | 'shared', ZoomBehavior<SVGRectElement, unknown>>()
 const clipPathId = useWaveformInstanceId('waveform-clip')
-const internalInteractionMode = ref<WaveformInteractionMode | undefined>(undefined)
 const internalHiddenSeriesIds = ref(new Set(props.defaultHiddenSeriesIds))
 const annotationInteraction = useWaveformAnnotationInteraction()
 const editorSeriesOptions = ref<AnnotationSeriesCandidate[]>([])
@@ -191,6 +190,8 @@ const lastIndependentZoomGestures = new Map<number, ZoomGestureKind>()
 const lastZoomedTrackIndexes = new Set<number>()
 const zoomThrottle = useAnimationFrameThrottle()
 const hoverThrottle = useAnimationFrameThrottle()
+const wheelZoomDebounceMs = 200
+let wheelZoomEndTimer: ReturnType<typeof setTimeout> | undefined
 const preparedSeries = usePreparedWaveformSeries(() => props.data, handleDataReferenceChange)

 interface SelectionState {
@@ -255,6 +256,16 @@ const containerStyle = computed(() => ({
  height: fixedHeight.value === undefined ? '100%' : `${fixedHeight.value}px`,
 }))
 const legendPosition = computed<WaveformLegendPosition>(() => props.legend?.position ?? 'top-right')
+const isCleanView = computed(() => props.cleanView === true)
+const resolvedZeroLine = computed(() => {
+  const width = props.zeroLine?.width
+  return {
+    visible: props.zeroLine?.visible === true,
+    color: props.zeroLine?.color || '#98a2b3',
+    width: typeof width === 'number' && Number.isFinite(width) && width > 0 ? width : 1,
+    dash: props.zeroLine?.dash ?? '6 4',
+  }
+})
 const legendBackgroundColor = computed(
  () => props.legend?.backgroundColor || 'rgba(255, 255, 255, 0.7)',
 )
@@ -273,10 +284,11 @@ const legendOrientation = computed<Exclude<WaveformLegendOrientation, 'auto'>>((
    : 'vertical'
 })
 const resolvedTitleText = computed(() => props.title?.text.trim() ?? '')
-const titleVisible = computed(
+const titleAreaReserved = computed(
  () =>
    Boolean(props.title) && props.title?.visible !== false && resolvedTitleText.value.length > 0,
 )
+const titleVisible = computed(() => titleAreaReserved.value && !isCleanView.value)
 const titleFontSize = computed(() => {
  const fontSize = props.title?.textStyle?.fontSize
  return Number.isFinite(fontSize) && (fontSize ?? 0) > 0 ? (fontSize as number) : 14
@@ -325,7 +337,8 @@ const titleLayout = computed(() =>
    rotation: titleRotation.value,
  }),
 )
-const titleAreaHeight = computed(() => (titleVisible.value ? titleLayout.value.areaHeight : 0))
+const titleAreaHeight = computed(() => (titleAreaReserved.value ? titleLayout.value.areaHeight : 0))
+const chartTopMargin = computed(() => margin.top)
 const drawingHeight = computed(() => Math.max(0, chartHeight.value - titleAreaHeight.value))
 const innerHeight = computed(() => Math.max(0, drawingHeight.value - margin.top - margin.bottom))
 const titleAreaStyle = computed<CSSProperties>(() => ({
@@ -502,7 +515,7 @@ const hasWaveformData = computed(() => chartSeries.value.length > 0)
 const hoveredPoint = computed(() => hoveredSeriesPoints.value[0]?.point ?? null)
 const hasChartArea = computed(() => innerWidth.value > 0 && innerHeight.value > 0)
 const resolvedXLabel = computed(() => props.xLabel ?? `时间（${props.timeUnit}）`)
-const activeInteractionMode = computed(() => props.interactionMode ?? internalInteractionMode.value)
+const activeInteractionMode = computed(() => props.interactionMode)
 // 当 interactionMode 未定义或为 'zoom' 时启用缩放
 const isZoomMode = computed(
  () => activeInteractionMode.value === 'zoom' || activeInteractionMode.value === undefined,
@@ -593,7 +606,7 @@ const trackLayouts = computed<TrackLayout[]>(() =>
        : sharedYDomains.value,
    timeUnit: props.timeUnit,
    rendering: renderingOptions.value,
-    hideSecondaryLabels: yAxisLayout.value.hideSecondaryLabels,
+    hideSecondaryLabels: isCleanView.value || yAxisLayout.value.hideSecondaryLabels,
    yAxisLabelX: yAxisMetrics.value.labelCenterX,
    showCompactEmptyTracks: props.displayMode === 'compact' && hasWaveformData.value,
  }),
@@ -659,6 +672,7 @@ function handleSharedZoom(event: D3ZoomEvent<SVGRectElement, unknown>) {
  pendingSharedZoomTransform = event.transform
  pendingSharedZoomGesture = 'wheel'
  scheduleZoomCommit()
+  scheduleWheelZoomEnd()
 }

 function handleIndependentZoom(event: D3ZoomEvent<SVGRectElement, unknown>, trackIndex: number) {
@@ -667,6 +681,7 @@ function handleIndependentZoom(event: D3ZoomEvent<SVGRectElement, unknown>, trac
  pendingIndependentZoomTransforms.set(trackIndex, event.transform)
  pendingIndependentZoomGestures.set(trackIndex, 'wheel')
  scheduleZoomCommit()
+  scheduleWheelZoomEnd()
 }

 function commitPendingZoom() {
@@ -714,9 +729,20 @@ function scheduleZoomCommit() {
 function flushPendingZoom() {
  zoomThrottle.flush()
  commitPendingZoom()
+  if (lastSharedZoomGesture === 'wheel' || lastIndependentZoomGestures.size) return
  emitZoomEnd()
 }

+function scheduleWheelZoomEnd() {
+  if (wheelZoomEndTimer !== undefined) clearTimeout(wheelZoomEndTimer)
+  wheelZoomEndTimer = setTimeout(() => {
+    wheelZoomEndTimer = undefined
+    zoomThrottle.flush()
+    commitPendingZoom()
+    emitZoomEnd()
+  }, wheelZoomDebounceMs)
+}
+
 function emitZoomEnd() {
  if (props.displayMode === 'independent') {
    lastZoomedTrackIndexes.forEach((trackIndex) => {
@@ -773,6 +799,10 @@ function cancelPendingZoom() {
  lastZoomedTrackIndexes.clear()
  lastIndependentZoomGestures.clear()
  zoomThrottle.cancel()
+  if (wheelZoomEndTimer !== undefined) {
+    clearTimeout(wheelZoomEndTimer)
+    wheelZoomEndTimer = undefined
+  }
 }

 function clearZoomBindings() {
@@ -966,22 +996,6 @@ function makeAnnotationId(): string {
  return `annotation-${Date.now()}-${generatedAnnotationId}`
 }

-function setInteractionMode(mode: WaveformInteractionMode) {
-  if (props.interactionMode === undefined) internalInteractionMode.value = mode
-  annotationInteraction.closeContextMenu()
-  editorSeriesOptions.value = []
-  emit('update:interaction-mode', mode)
-}
-
-function setAnnotationsVisible(visible: boolean) {
-  annotationInteraction.closeContextMenu()
-  if (!visible) {
-    annotationInteraction.closeEditor()
-    editorSeriesOptions.value = []
-  }
-  emit('update:annotations-visible', visible)
-}
-
 function toggleSeriesVisibility(seriesId: string) {
  if (!chartSeries.value.some((series) => series.id === seriesId)) return
  const nextHiddenSeriesIds = new Set(hiddenSeriesIdSet.value)
@@ -1004,7 +1018,7 @@ function resolvePointerEditorAnchor(
  const track = trackIndex === undefined ? undefined : trackLayouts.value[trackIndex]
  return {
    x: resolvedChartLeftMargin.value + (track ? track.left + pointerX : pointerX),
-    y: titleAreaHeight.value + margin.top + (track ? track.top + pointerY : pointerY),
+    y: titleAreaHeight.value + chartTopMargin.value + (track ? track.top + pointerY : pointerY),
  }
 }

@@ -1018,7 +1032,7 @@ function resolveAnnotationEditorAnchor(annotation: WaveformAnnotation): Annotati
      : chartWidth.value / 2,
    y: track
      ? titleAreaHeight.value +
-        margin.top +
+        chartTopMargin.value +
        track.top +
        resolveSeriesYScale(track, annotation.seriesId)(annotation.y)
      : chartHeight.value / 2,
@@ -1293,7 +1307,7 @@ function handleIndependentPointerMove(event: PointerEvent, trackIndex: number) {
    })
    commitHover(nextPoints, trackIndex, {
      x: resolvedChartLeftMargin.value + track.left + pointerX,
-      y: titleAreaHeight.value + margin.top + track.top + pointerY,
+      y: titleAreaHeight.value + chartTopMargin.value + track.top + pointerY,
    })
  })
 }
@@ -1324,7 +1338,7 @@ function handleSharedPointerMove(event: PointerEvent) {
    )
    commitHover(nextPoints, null, {
      x: resolvedChartLeftMargin.value + pointerX,
-      y: titleAreaHeight.value + margin.top + pointerY,
+      y: titleAreaHeight.value + chartTopMargin.value + pointerY,
    })
  })
 }
@@ -1735,7 +1749,7 @@ watch(
 )

 function measureTitle() {
-  if (!titleVisible.value || !titleMeasureElement.value) {
+  if (!titleAreaReserved.value || !titleMeasureElement.value) {
    measuredTitleWidth.value = 0
    measuredTitleHeight.value = 0
    return
@@ -1746,7 +1760,7 @@ function measureTitle() {
 }

 watch(
-  [resolvedTitleText, titleVisible, titleMeasureStyle],
+  [resolvedTitleText, titleAreaReserved, titleMeasureStyle],
  async () => {
    measuredTitleWidth.value = 0
    measuredTitleHeight.value = 0
@@ -1785,7 +1799,10 @@ onBeforeUnmount(() => {
    :class="[
      `waveform-chart--${displayMode}`,
      `waveform-chart--interaction-${activeInteractionMode}`,
-      { 'waveform-chart--panning': selection?.mode === 'pan' },
+      {
+        'waveform-chart--clean': isCleanView,
+        'waveform-chart--panning': selection?.mode === 'pan',
+      },
    ]"
    :style="containerStyle"
    :data-display-mode="displayMode"
@@ -1796,11 +1813,12 @@ onBeforeUnmount(() => {
    @contextmenu.capture="handleNativeContextMenu"
  >
    <div
-      v-if="titleVisible"
+      v-if="titleAreaReserved"
      class="waveform-chart__title-area"
      :style="titleAreaStyle"
-      role="heading"
-      aria-level="2"
+      :role="titleVisible ? 'heading' : undefined"
+      :aria-level="titleVisible ? 2 : undefined"
+      :aria-hidden="isCleanView || undefined"
    >
      <span
        ref="titleMeasureElement"
@@ -1810,7 +1828,7 @@ onBeforeUnmount(() => {
      >
        {{ resolvedTitleText }}
      </span>
-      <span class="waveform-chart__title-visual" :style="titleVisualStyle">
+      <span v-if="titleVisible" class="waveform-chart__title-visual" :style="titleVisualStyle">
        <span
          class="waveform-chart__title-text"
          :style="titleTextStyle"
@@ -1842,8 +1860,12 @@ onBeforeUnmount(() => {
        </clipPath>
      </defs>

-      <g :transform="`translate(${resolvedChartLeftMargin}, ${margin.top})`">
-        <g v-if="displayMode !== 'compact'" class="waveform-chart__grid-slots" aria-hidden="true">
+      <g :transform="`translate(${resolvedChartLeftMargin}, ${chartTopMargin})`">
+        <g
+          v-if="displayMode !== 'compact' && !isCleanView"
+          class="waveform-chart__grid-slots"
+          aria-hidden="true"
+        >
          <g
            v-for="cell in gridCells"
            :key="`grid-slot-${cell.slotIndex}`"
@@ -1889,6 +1911,8 @@ onBeforeUnmount(() => {
          :interaction-mode="activeInteractionMode"
          :frame-number="resolveFrameNumber(track.index)"
          :frame-style="frameStyle"
+          :clean-view="isCleanView"
+          :zero-line="resolvedZeroLine"
          :time-unit="timeUnit"
          :y-label="yLabel"
          :hovered-point="hoveredSeriesPoints.find((p) => p.trackIndex === track.index)"
@@ -1912,6 +1936,7 @@ onBeforeUnmount(() => {
        />

        <WaveformAnnotationLayer
+          v-if="!isCleanView"
          :annotations="renderedAnnotations"
          :visible="annotationsVisible"
          @contextmenu="handleExistingAnnotationContextMenu"
@@ -1920,7 +1945,7 @@ onBeforeUnmount(() => {
          @drag-end="endAnnotationDrag"
        />

-        <g class="waveform-chart__legend-layer">
+        <g v-if="!isCleanView" class="waveform-chart__legend-layer">
          <g
            v-for="track in trackLayouts"
            :key="`legend-${track.index}-${track.series.name}`"
@@ -1944,7 +1969,7 @@ onBeforeUnmount(() => {
        </g>

        <text
-          v-if="resolvedXLabel"
+          v-if="resolvedXLabel && !isCleanView"
          class="waveform-chart__label"
          :x="innerWidth / 2"
          :y="xAxisTitleY"
@@ -1966,7 +1991,7 @@ onBeforeUnmount(() => {
    </svg>

    <Pagination
-      v-if="gridOptions.showPagination && pageCount > 1"
+      v-if="gridOptions.showPagination && pageCount > 1 && !isCleanView"
      class="waveform-chart__pagination"
      aria-label="波形分页"
      :current="currentPage"
@@ -1977,16 +2002,8 @@ onBeforeUnmount(() => {
      @change="goToPage"
    />

-    <WaveformAnnotationToolbar
-      v-if="showAnnotationToolbar"
-      :interaction-mode="activeInteractionMode"
-      :annotations-visible="annotationsVisible"
-      @update:interaction-mode="setInteractionMode"
-      @update:annotations-visible="setAnnotationsVisible"
-    />
-
    <WaveformAnnotationEditor
-      v-if="annotationInteraction.editorDraft.value"
+      v-if="annotationInteraction.editorDraft.value && !isCleanView"
      :annotation="annotationInteraction.editorDraft.value.annotation"
      :mode="annotationInteraction.editorDraft.value.mode"
      :series="editorSeries"
@@ -1998,6 +2015,7 @@ onBeforeUnmount(() => {
    />

    <WaveformAnnotationContextMenu
+      v-if="!isCleanView"
      :visible="annotationInteraction.contextMenu.value !== null"
      :x="annotationInteraction.contextMenu.value?.x || 0"
      :y="annotationInteraction.contextMenu.value?.y || 0"
@@ -2033,6 +2051,10 @@ onBeforeUnmount(() => {
  border-radius: 6px;
 }

+.waveform-chart--clean {
+  border-color: transparent;
+}
+
 .waveform-chart__pagination {
  position: absolute;
  right: 10px;
--- a/src/components/annotation/WaveformAnnotationToolbar.vue
+++ b/src/components/annotation/WaveformAnnotationToolbar.vue
@@ -1,81 +0,0 @@
-<script setup lang="ts">
-import type { WaveformInteractionMode } from '../../types'
-
-interface Props {
-  interactionMode?: WaveformInteractionMode
-  annotationsVisible: boolean
-}
-
-const props = defineProps<Props>()
-const emit = defineEmits<{
-  (event: 'update:interaction-mode', mode: WaveformInteractionMode): void
-  (event: 'update:annotations-visible', visible: boolean): void
-}>()
-</script>
-
-<template>
-  <div class="waveform-annotation-toolbar" role="toolbar" aria-label="波形标注工具">
-    <button
-      type="button"
-      :class="{ 'is-active': props.interactionMode === 'zoom' }"
-      aria-label="缩放模式"
-      title="缩放模式"
-      @click="emit('update:interaction-mode', 'zoom')"
-    >
-      缩放
-    </button>
-    <button
-      type="button"
-      :class="{ 'is-active': props.interactionMode === 'annotation' }"
-      aria-label="添加标注"
-      title="添加标注"
-      @click="emit('update:interaction-mode', 'annotation')"
-    >
-      标注
-    </button>
-    <button
-      type="button"
-      :class="{ 'is-active': props.annotationsVisible }"
-      :aria-pressed="props.annotationsVisible"
-      :aria-label="props.annotationsVisible ? '隐藏标注' : '显示标注'"
-      title="显示/隐藏标注"
-      @click="emit('update:annotations-visible', !props.annotationsVisible)"
-    >
-      {{ props.annotationsVisible ? '隐藏' : '显示' }}
-    </button>
-  </div>
-</template>
-
-<style scoped>
-.waveform-annotation-toolbar {
-  position: absolute;
-  top: 8px;
-  right: 8px;
-  z-index: 10;
-  display: flex;
-  gap: 4px;
-  padding: 5px;
-  background: #fff;
-  border: 1px solid #dfe5ef;
-  border-radius: 4px;
-  box-shadow: 0 2px 8px rgb(0 0 0 / 8%);
-}
-
-.waveform-annotation-toolbar button {
-  min-width: 42px;
-  height: 28px;
-  padding: 0 7px;
-  color: #667085;
-  font-size: 12px;
-  background: transparent;
-  border: 0;
-  border-radius: 3px;
-  cursor: pointer;
-}
-
-.waveform-annotation-toolbar button:hover,
-.waveform-annotation-toolbar button.is-active {
-  color: #1677ff;
-  background: #e6f4ff;
-}
-</style>
--- a/src/components/annotation/components.test.ts
+++ b/src/components/annotation/components.test.ts
@@ -5,7 +5,6 @@ import { ColorPicker } from 'vue3-colorpicker'
 import WaveformAnnotationContextMenu from './WaveformAnnotationContextMenu.vue'
 import WaveformAnnotationEditor from './WaveformAnnotationEditor.vue'
 import WaveformAnnotationLayer from './WaveformAnnotationLayer.vue'
-import WaveformAnnotationToolbar from './WaveformAnnotationToolbar.vue'

 describe('waveform annotation controls', () => {
  it('keeps dialog title ids unique across editor instances', () => {
@@ -76,18 +75,6 @@ describe('waveform annotation controls', () => {
    expect(wrapper.get('.waveform-annotation-editor__series').text()).toContain('通道 A')
  })

-  it('emits controlled toolbar changes', async () => {
-    const wrapper = mount(WaveformAnnotationToolbar, {
-      props: { interactionMode: 'zoom', annotationsVisible: true },
-    })
-
-    await wrapper.get('button[aria-label="添加标注"]').trigger('click')
-    await wrapper.get('button[aria-label="隐藏标注"]').trigger('click')
-
-    expect(wrapper.emitted('update:interaction-mode')).toEqual([['annotation']])
-    expect(wrapper.emitted('update:annotations-visible')).toEqual([[false]])
-  })
-
  it('validates text and emits an immutable edited annotation with style defaults', async () => {
    const annotation = { id: 'note', seriesId: 'a', x: 1, y: 2, text: '' }
    const wrapper = mount(WaveformAnnotationEditor, {
--- a/src/components/annotation/index.ts
+++ b/src/components/annotation/index.ts
@@ -1,6 +1,6 @@
 export { default as WaveformAnnotationLayer } from './WaveformAnnotationLayer.vue'
-export { default as WaveformAnnotationToolbar } from './WaveformAnnotationToolbar.vue'
 export { default as WaveformAnnotationContextMenu } from './WaveformAnnotationContextMenu.vue'
 export * from './markup'
+export * from './serialization'
 export * from './types'
 export * from './useWaveformAnnotationInteraction'
--- a/src/components/annotation/serialization.test.ts
+++ b/src/components/annotation/serialization.test.ts
@@ -0,0 +1,114 @@
+import { describe, expect, it } from 'vitest'
+
+import type { WaveformAnnotation } from '../../types'
+import { parseWaveformAnnotations, serializeWaveformAnnotations } from './serialization'
+
+describe('waveform annotation serialization', () => {
+  it('round-trips every annotation field through a versioned document', () => {
+    const source: WaveformAnnotation[] = [
+      {
+        id: 'note-1',
+        seriesId: 'channel-a',
+        x: 1.25,
+        y: -3.5,
+        text: '峰值',
+        labelOffsetX: 12,
+        labelOffsetY: -8,
+        createdAt: '2026-07-21T12:00:00.000Z',
+        style: {
+          borderColor: '#1677ff',
+          textColor: '#333333',
+          backgroundColor: 'rgba(255, 255, 255, 0.92)',
+        },
+      },
+    ]
+    const sourceSnapshot = JSON.parse(JSON.stringify(source))
+
+    const parsed = parseWaveformAnnotations(serializeWaveformAnnotations(source))
+
+    expect(JSON.parse(serializeWaveformAnnotations(source))).toMatchObject({ version: 1 })
+    expect(source).toEqual(sourceSnapshot)
+    expect(parsed).toEqual(source)
+    expect(parsed).not.toBe(source)
+    expect(parsed[0]).not.toBe(source[0])
+    expect(parsed[0].style).not.toBe(source[0].style)
+  })
+
+  it('allows annotations for series that are not currently loaded', () => {
+    expect(
+      parseWaveformAnnotations(
+        JSON.stringify({
+          version: 1,
+          annotations: [{ id: 'future', seriesId: 'missing', x: 1, y: 2, text: '稍后显示' }],
+        }),
+      ),
+    ).toEqual([{ id: 'future', seriesId: 'missing', x: 1, y: 2, text: '稍后显示' }])
+  })
+
+  it.each([
+    ['invalid JSON', '{'],
+    ['non-object root', '[]'],
+    ['unsupported version', JSON.stringify({ version: 2, annotations: [] })],
+    ['missing annotation array', JSON.stringify({ version: 1 })],
+    [
+      'invalid annotation entry',
+      JSON.stringify({ version: 1, annotations: [{ id: 'a', seriesId: 's', x: 1 }] }),
+    ],
+    [
+      'non-finite coordinate',
+      '{"version":1,"annotations":[{"id":"a","seriesId":"s","x":1e400,"y":2,"text":"a"}]}',
+    ],
+    [
+      'overlong text',
+      JSON.stringify({
+        version: 1,
+        annotations: [{ id: 'a', seriesId: 's', x: 1, y: 2, text: 'a'.repeat(41) }],
+      }),
+    ],
+    [
+      'duplicate IDs',
+      JSON.stringify({
+        version: 1,
+        annotations: [
+          { id: 'a', seriesId: 's', x: 1, y: 2, text: 'one' },
+          { id: 'a', seriesId: 's', x: 2, y: 3, text: 'two' },
+        ],
+      }),
+    ],
+  ])('rejects %s without returning partial data', (_label, json) => {
+    expect(() => parseWaveformAnnotations(json)).toThrow('Invalid waveform annotation file')
+  })
+
+  it('rejects invalid optional fields and serialization input', () => {
+    expect(() =>
+      parseWaveformAnnotations(
+        JSON.stringify({
+          version: 1,
+          annotations: [
+            {
+              id: 'a',
+              seriesId: 's',
+              x: 1,
+              y: 2,
+              text: 'a',
+              labelOffsetX: '12',
+            },
+          ],
+        }),
+      ),
+    ).toThrow('labelOffsetX')
+
+    expect(() =>
+      parseWaveformAnnotations(
+        JSON.stringify({
+          version: 1,
+          annotations: [{ id: 'a', seriesId: 's', x: 1, y: 2, text: 'a', style: [] }],
+        }),
+      ),
+    ).toThrow('style must be an object')
+
+    expect(() =>
+      serializeWaveformAnnotations([{ id: 'a', seriesId: 's', x: Number.NaN, y: 2, text: 'a' }]),
+    ).toThrow('x must be a finite number')
+  })
+})
--- a/src/components/annotation/serialization.ts
+++ b/src/components/annotation/serialization.ts
@@ -0,0 +1,127 @@
+import type { WaveformAnnotation, WaveformAnnotationStyle } from '../../types'
+import { ANNOTATION_MAX_TEXT_LENGTH } from './markup'
+
+const ANNOTATION_FILE_VERSION = 1
+
+type JsonRecord = Record<string, unknown>
+
+function fail(message: string): never {
+  throw new TypeError(`Invalid waveform annotation file: ${message}`)
+}
+
+function isRecord(value: unknown): value is JsonRecord {
+  return typeof value === 'object' && value !== null && !Array.isArray(value)
+}
+
+function requiredString(record: JsonRecord, key: string, path: string): string {
+  const value = record[key]
+  if (typeof value !== 'string' || value.trim().length === 0) {
+    fail(`${path}.${key} must be a non-empty string`)
+  }
+  return value
+}
+
+function optionalString(record: JsonRecord, key: string, path: string): string | undefined {
+  const value = record[key]
+  if (value === undefined) return undefined
+  if (typeof value !== 'string') fail(`${path}.${key} must be a string`)
+  return value
+}
+
+function requiredFiniteNumber(record: JsonRecord, key: string, path: string): number {
+  const value = record[key]
+  if (typeof value !== 'number' || !Number.isFinite(value)) {
+    fail(`${path}.${key} must be a finite number`)
+  }
+  return value
+}
+
+function optionalFiniteNumber(record: JsonRecord, key: string, path: string): number | undefined {
+  const value = record[key]
+  if (value === undefined) return undefined
+  if (typeof value !== 'number' || !Number.isFinite(value)) {
+    fail(`${path}.${key} must be a finite number`)
+  }
+  return value
+}
+
+function parseStyle(value: unknown, path: string): WaveformAnnotationStyle | undefined {
+  if (value === undefined) return undefined
+  if (!isRecord(value)) fail(`${path} must be an object`)
+
+  const borderColor = optionalString(value, 'borderColor', path)
+  const textColor = optionalString(value, 'textColor', path)
+  const backgroundColor = optionalString(value, 'backgroundColor', path)
+
+  return {
+    ...(borderColor !== undefined && { borderColor }),
+    ...(textColor !== undefined && { textColor }),
+    ...(backgroundColor !== undefined && { backgroundColor }),
+  }
+}
+
+function parseAnnotation(value: unknown, index: number): WaveformAnnotation {
+  const path = `annotations[${index}]`
+  if (!isRecord(value)) fail(`${path} must be an object`)
+
+  const text = requiredString(value, 'text', path)
+  if (text.length > ANNOTATION_MAX_TEXT_LENGTH) {
+    fail(`${path}.text must not exceed ${ANNOTATION_MAX_TEXT_LENGTH} characters`)
+  }
+
+  const labelOffsetX = optionalFiniteNumber(value, 'labelOffsetX', path)
+  const labelOffsetY = optionalFiniteNumber(value, 'labelOffsetY', path)
+  const createdAt = optionalString(value, 'createdAt', path)
+  const style = parseStyle(value.style, `${path}.style`)
+
+  return {
+    id: requiredString(value, 'id', path),
+    seriesId: requiredString(value, 'seriesId', path),
+    x: requiredFiniteNumber(value, 'x', path),
+    y: requiredFiniteNumber(value, 'y', path),
+    text,
+    ...(labelOffsetX !== undefined && { labelOffsetX }),
+    ...(labelOffsetY !== undefined && { labelOffsetY }),
+    ...(style !== undefined && { style }),
+    ...(createdAt !== undefined && { createdAt }),
+  }
+}
+
+function normalizeAnnotations(values: readonly unknown[]): WaveformAnnotation[] {
+  const annotations = values.map(parseAnnotation)
+  const ids = new Set<string>()
+  annotations.forEach((annotation, index) => {
+    if (ids.has(annotation.id)) fail(`annotations[${index}].id must be unique`)
+    ids.add(annotation.id)
+  })
+  return annotations
+}
+
+/** Serialize annotations to the versioned waveform annotation JSON format. */
+export function serializeWaveformAnnotations(annotations: readonly WaveformAnnotation[]): string {
+  return JSON.stringify(
+    { version: ANNOTATION_FILE_VERSION, annotations: normalizeAnnotations(annotations) },
+    null,
+    2,
+  )
+}
+
+/** Parse and validate a versioned waveform annotation JSON document. */
+export function parseWaveformAnnotations(json: string): WaveformAnnotation[] {
+  if (typeof json !== 'string') fail('input must be a JSON string')
+
+  let document: unknown
+  try {
+    document = JSON.parse(json)
+  } catch {
+    fail('input is not valid JSON')
+  }
+
+  if (!isRecord(document)) fail('root must be an object')
+  if (document.version !== ANNOTATION_FILE_VERSION) {
+    fail(`version must be ${ANNOTATION_FILE_VERSION}`)
+  }
+  if (!Array.isArray(document.annotations)) fail('annotations must be an array')
+
+  return normalizeAnnotations(document.annotations)
+}
--- a/src/components/core/grid.ts
+++ b/src/components/core/grid.ts
@@ -74,6 +74,7 @@ export function resolveGridCellGeometry(
  displayMode: WaveformDisplayMode,
  slotHasSeries: boolean[] = [],
  horizontalGap?: number,
+  showXAxis = true,
 ): GridCellGeometry[] {
  const defaultGap = getGridGap(displayMode)
  const columnGap = Number.isFinite(horizontalGap)
@@ -81,7 +82,9 @@ export function resolveGridCellGeometry(
    : defaultGap
  const totalHorizontalGap = Math.max(0, options.columnCount - 1) * columnGap
  const axisRows = new Set<number>()
-  if (displayMode === 'independent') {
+  if (!showXAxis) {
+    // Net view uses the full drawing area for waveform pixels.
+  } else if (displayMode === 'independent') {
    for (let row = 0; row < options.rowCount; row += 1) axisRows.add(row)
  } else if (displayMode === 'compact') {
    // Compact tracks share one continuous plot stack. Reserve the X-axis band
--- a/src/components/data/types.ts
+++ b/src/components/data/types.ts
@@ -19,6 +19,7 @@ export type {
  WaveformLegendOrientation,
  WaveformLegendOptions,
  WaveformFrameStyle,
+  WaveformZeroLineOptions,
  SingleWaveformData,
  WaveformLineType,
  WaveformPointType,
--- a/src/components/index.ts
+++ b/src/components/index.ts
@@ -17,6 +17,7 @@ export type {
  WaveformLegendOrientation,
  WaveformLegendOptions,
  WaveformFrameStyle,
+  WaveformZeroLineOptions,
  WaveformPoint,
  WaveformSeries,
  WaveformLineType,
@@ -30,8 +31,4 @@ export type { WaveformGridOptions as WaveformGridConfig } from './core/grid'
 // 可选：导出各系统的组件（供高级用户使用）
 export { WaveformTooltip } from './interaction'
 export { WaveformTrack } from './rendering'
-export {
-  WaveformAnnotationLayer,
-  WaveformAnnotationToolbar,
-  WaveformAnnotationContextMenu,
-} from './annotation'
+export { WaveformAnnotationLayer, WaveformAnnotationContextMenu } from './annotation'
--- a/src/components/rendering/WaveformTrack.vue
+++ b/src/components/rendering/WaveformTrack.vue
@@ -2,7 +2,7 @@
 import { computed, nextTick, onMounted, ref, watch } from 'vue'
 import { axisBottom, axisLeft, axisRight, select } from 'd3'
 import { formatAxisTime, formatScientificAxisLabel } from '../../utils'
-import type { WaveformFrameStyle } from '../../types'
+import type { WaveformFrameStyle, WaveformZeroLineOptions } from '../../types'
 import type { WaveformDisplayMode, WaveformInteractionMode } from '../data/types'
 import type {
  DisplaySeries,
@@ -37,6 +37,12 @@ interface Props {
  hoveredPoint?: HoveredSeriesPoint
  /** Y 轴标签回退值 */
  yLabel?: string
+  /** Hide visual aids while keeping chart interaction active. */
+  cleanView?: boolean
+  /** Resolved zero reference line style. */
+  zeroLine?: Required<Pick<WaveformZeroLineOptions, 'color' | 'width' | 'dash'>> & {
+    visible: boolean
+  }
 }

 interface Emits {
@@ -51,6 +57,8 @@ interface Emits {

 const props = withDefaults(defineProps<Props>(), {
  interactionMode: 'zoom',
+  cleanView: false,
+  zeroLine: () => ({ visible: false, color: '#98a2b3', width: 1, dash: '6 4' }),
 })
 const emit = defineEmits<Emits>()

@@ -111,6 +119,12 @@ function hasCrosshair(): boolean {
  )
 }

+function zeroLineY(axis: WaveformYAxisLayout): number | null {
+  const [minimum, maximum] = axis.scale.domain()
+  if (!props.zeroLine.visible || minimum > 0 || maximum < 0) return null
+  return axis.scale(0)
+}
+
 function renderAxes() {
  props.track.yAxes.forEach((axis, index) => {
    const element = yAxisElements.value[index]
@@ -180,7 +194,7 @@ watch(
    :transform="`translate(${track.left ?? 0}, ${track.top})`"
  >
    <rect
-      v-if="!track.isEmpty"
+      v-if="!track.isEmpty && !cleanView"
      class="waveform-track__plot-background waveform-chart__plot-background"
      :width="track.width ?? innerWidth"
      :height="track.height"
@@ -190,7 +204,7 @@ watch(

    <!-- 网格和背景 -->
    <g
-      v-if="!track.isEmpty && track.hasVisibleSeries"
+      v-if="!track.isEmpty && track.hasVisibleSeries && !cleanView"
      :clip-path="`url(#${clipPathId}-${track.index})`"
      aria-hidden="true"
    >
@@ -236,9 +250,31 @@ watch(
      </g>
    </g>

+    <g
+      v-if="!track.isEmpty && track.hasVisibleSeries && zeroLine.visible && !cleanView"
+      class="waveform-track__zero-lines waveform-chart__zero-lines"
+      :clip-path="`url(#${clipPathId}-${track.index})`"
+      aria-hidden="true"
+    >
+      <template v-for="axis in track.yAxes" :key="`zero-line-${track.index}-${axis.index}`">
+        <line
+          v-if="zeroLineY(axis) !== null"
+          class="waveform-track__zero-line waveform-chart__zero-line"
+          :data-y-axis-index="axis.index"
+          x1="0"
+          :x2="track.width ?? innerWidth"
+          :y1="zeroLineY(axis) ?? 0"
+          :y2="zeroLineY(axis) ?? 0"
+          :stroke="zeroLine.color"
+          :stroke-width="zeroLine.width"
+          :stroke-dasharray="zeroLine.dash || undefined"
+        />
+      </template>
+    </g>
+
    <!-- 帧编号水印 -->
    <text
-      v-if="!track.isEmpty && track.hasVisibleSeries && frameNumber !== undefined"
+      v-if="!track.isEmpty && track.hasVisibleSeries && frameNumber !== undefined && !cleanView"
      class="waveform-track__watermark waveform-chart__watermark"
      :x="(track.width ?? innerWidth) / 2"
      :y="track.height / 2"
@@ -252,13 +288,13 @@ watch(

    <!-- X 轴 -->
    <g
-      v-if="track.showXAxis"
+      v-if="track.showXAxis && !cleanView"
      ref="xAxisElement"
      class="waveform-track__axis waveform-track__axis--x waveform-chart__axis waveform-chart__axis--x"
      :transform="`translate(0, ${track.height})`"
    />
    <g
-      v-if="track.showXAxis"
+      v-if="track.showXAxis && !cleanView"
      class="waveform-track__axis-endpoints waveform-chart__axis-endpoints"
      :transform="`translate(0, ${track.height})`"
      font-family="sans-serif"
@@ -285,7 +321,7 @@ watch(
      </text>
    </g>
    <text
-      v-if="track.showXAxis && track.xAxisExponent"
+      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"
@@ -297,7 +333,7 @@ watch(

    <!-- Y 轴 -->
    <g
-      v-for="axis in track.isEmpty ? [] : track.yAxes"
+      v-for="axis in track.isEmpty || cleanView ? [] : 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"
@@ -307,7 +343,9 @@ watch(
      :transform="`translate(${axis.x}, 0)`"
    />
    <text
-      v-for="axis in track.isEmpty ? [] : track.yAxes.filter((item) => item.exponentLabel)"
+      v-for="axis in track.isEmpty || cleanView
+        ? []
+        : track.yAxes.filter((item) => item.exponentLabel)"
      :key="`y-axis-exponent-${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"
@@ -323,6 +361,7 @@ watch(
    <!-- Y 轴标签 -->
    <g
      v-if="
+        !cleanView &&
        !track.isEmpty &&
        track.hasVisibleSeries &&
        track.seriesList.length === 1 &&
@@ -351,7 +390,7 @@ watch(
    </g>

    <g
-      v-for="axis in track.yAxes.length > 1 ? track.yAxes.filter(hasYAxisTitle) : []"
+      v-for="axis in !cleanView && track.yAxes.length > 1 ? track.yAxes.filter(hasYAxisTitle) : []"
      :key="`y-axis-title-${track.index}-${axis.index}`"
      class="waveform-track__multi-axis-title"
      :data-y-axis-title-index="axis.index"
@@ -377,7 +416,7 @@ watch(

    <!-- 轨道边框 -->
    <rect
-      v-if="!track.isEmpty"
+      v-if="!track.isEmpty && !cleanView"
      class="waveform-track__plot-frame waveform-chart__plot-frame"
      :width="track.width ?? innerWidth"
      :height="track.height"
@@ -421,7 +460,7 @@ watch(
    />

    <text
-      v-if="!track.isEmpty && !track.hasVisibleSeries"
+      v-if="!track.isEmpty && !track.hasVisibleSeries && !cleanView"
      class="waveform-track__no-visible-series"
      :x="(track.width ?? innerWidth) / 2"
      :y="track.height / 2"
@@ -516,6 +555,11 @@ watch(
  stroke-dasharray: 4 3;
 }

+.waveform-track__zero-line {
+  fill: none;
+  pointer-events: none;
+}
+
 .waveform-track__axis-endpoint {
  fill: #667085;
  font-size: 11px;
--- a/src/index.ts
+++ b/src/index.ts
@@ -23,6 +23,7 @@ export type {
  WaveformLegendOrientation,
  WaveformLegendOptions,
  WaveformFrameStyle,
+  WaveformZeroLineOptions,
  // 数据类型
  SingleWaveformData,
  WaveformLineType,
@@ -59,3 +60,5 @@ export {
  selectRenderablePoints,
  type ResolvedWaveformRenderingOptions,
 } from './core'
+
+export { parseWaveformAnnotations, serializeWaveformAnnotations } from './components/annotation'
--- a/src/styles.css
+++ b/src/styles.css
@@ -156,7 +156,8 @@ body {
  border-radius: 4px;
 }

-.frame-style-controls {
+.frame-style-controls,
+.auxiliary-style-controls {
  display: grid;
  gap: 10px;
 }
--- a/src/types/chart.ts
+++ b/src/types/chart.ts
@@ -118,3 +118,11 @@ export interface WaveformFrameStyle {
  borderStyle?: 'solid' | 'dashed'
  backgroundColor?: string
 }
+
+/** Styling and visibility options for the horizontal zero-value reference line. */
+export interface WaveformZeroLineOptions {
+  visible?: boolean
+  color?: string
+  width?: number
+  dash?: string
+}
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -18,6 +18,7 @@ export type {
  WaveformLegendOrientation,
  WaveformLegendOptions,
  WaveformFrameStyle,
+  WaveformZeroLineOptions,
 } from './chart'

 // 数据类型
Author	SHA1	Message	Date
李启源	21bf0d803e	feat(annotation): add serialization support All checks were successful Package component / package (push) Successful in 6m3s Details	2026-07-21 23:15:06 +08:00
李启源	4643a2dbfe	fix(chart): preserve clean view geometry	2026-07-21 22:26:34 +08:00
李启源	6a6a387868	feat(chart): add zero line and clean view	2026-07-21 20:44:08 +08:00