feat(chart): add zero line and clean view

2026-07-21 20:44:08 +08:00
parent 07e9855eac
commit 6a6a387868
13 changed files with 401 additions and 38 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、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，并取消这些元素预留的边距，仅保留波形数据层。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、
--- 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">
@@ -602,6 +666,8 @@ 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"
--- a/src/components/WaveformChart.test.ts
+++ b/src/components/WaveformChart.test.ts
@@ -220,6 +220,152 @@ 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('uses the full drawing area and hides auxiliary layers in clean view', async () => {
+    const wrapper = await mountSizedChart(
+      {
+        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 },
+              ],
+            },
+          },
+        ],
+      },
+      {
+        cleanView: true,
+        grid: { rowCount: 1, columnCount: 1, showPagination: true },
+        title: { text: 'hidden title' },
+        frameNumber: 1,
+        annotations: [{ id: 'note', seriesId: 'first', x: 0.5, y: 0, text: 'hidden note' }],
+        zeroLine: { visible: true },
+      },
+    )
+
+    expect(wrapper.get('.waveform-chart').attributes('data-chart-left-margin')).toBe('0')
+    expect(wrapper.get('.waveform-chart__track').attributes('data-track-height')).toBe('360')
+    expect(wrapper.findAll('.waveform-chart__series')).toHaveLength(2)
+    expect(wrapper.find('.waveform-chart__overlay--independent').exists()).toBe(true)
+    expect(wrapper.find('.waveform-chart__title-area').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('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({
--- 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 {
@@ -109,6 +110,8 @@ const props = withDefaults(
    legend?: WaveformLegendOptions
    hiddenSeriesIds?: string[]
    defaultHiddenSeriesIds?: string[]
+    cleanView?: boolean
+    zeroLine?: WaveformZeroLineOptions
  }>(),
  {
    displayMode: 'independent',
@@ -128,6 +131,8 @@ const props = withDefaults(
    rendering: () => ({}),
    legend: () => ({ position: 'top-right', orientation: 'auto' }),
    defaultHiddenSeriesIds: () => [],
+    cleanView: false,
+    zeroLine: () => ({ visible: false }),
  },
 )

@@ -255,6 +260,16 @@ const containerStyle = computed(() => ({
  height: fixedHeight.value === undefined ? '100%' : `${fixedHeight.value}px`,
 }))
 const legendPosition = computed<WaveformLegendPosition>(() => props.legend?.position ?? 'top-right')
+const isCleanView = computed(() => props.cleanView === true)
+const resolvedZeroLine = computed(() => {
+  const width = props.zeroLine?.width
+  return {
+    visible: props.zeroLine?.visible === true,
+    color: props.zeroLine?.color || '#98a2b3',
+    width: typeof width === 'number' && Number.isFinite(width) && width > 0 ? width : 1,
+    dash: props.zeroLine?.dash ?? '6 4',
+  }
+})
 const legendBackgroundColor = computed(
  () => props.legend?.backgroundColor || 'rgba(255, 255, 255, 0.7)',
 )
@@ -275,7 +290,10 @@ const legendOrientation = computed<Exclude<WaveformLegendOrientation, 'auto'>>((
 const resolvedTitleText = computed(() => props.title?.text.trim() ?? '')
 const titleVisible = computed(
  () =>
-    Boolean(props.title) && props.title?.visible !== false && resolvedTitleText.value.length > 0,
+    !isCleanView.value &&
+    Boolean(props.title) &&
+    props.title?.visible !== false &&
+    resolvedTitleText.value.length > 0,
 )
 const titleFontSize = computed(() => {
  const fontSize = props.title?.textStyle?.fontSize
@@ -326,8 +344,11 @@ const titleLayout = computed(() =>
  }),
 )
 const titleAreaHeight = computed(() => (titleVisible.value ? titleLayout.value.areaHeight : 0))
+const chartTopMargin = computed(() => (isCleanView.value ? 0 : margin.top))
 const drawingHeight = computed(() => Math.max(0, chartHeight.value - titleAreaHeight.value))
-const innerHeight = computed(() => Math.max(0, drawingHeight.value - margin.top - margin.bottom))
+const innerHeight = computed(() =>
+  Math.max(0, drawingHeight.value - (isCleanView.value ? 0 : margin.top + margin.bottom)),
+)
 const titleAreaStyle = computed<CSSProperties>(() => ({
  height: `${titleAreaHeight.value}px`,
  justifyContent:
@@ -440,7 +461,7 @@ const hasVisibleWaveformData = computed(() =>
 )
 const chartLeftMargin = computed(() =>
  Math.max(
-    margin.left,
+    isCleanView.value ? 0 : margin.left,
    hasYAxisLabels.value
      ? yAxisMetrics.value.fullClearance
      : hasVisibleWaveformData.value
@@ -461,13 +482,19 @@ const multiAxisClearance = computed(() =>
  ),
 )
 const resolvedChartLeftMargin = computed(() =>
-  props.overlayMode === 'multi-axis'
+  isCleanView.value
+    ? 0
+    : props.overlayMode === 'multi-axis'
      ? Math.max(chartLeftMargin.value, multiAxisClearance.value.left)
      : chartLeftMargin.value,
 )
 const chartRightMargin = computed(() =>
  props.overlayMode === 'multi-axis'
-    ? Math.max(margin.right, multiAxisClearance.value.right)
+    ? isCleanView.value
+      ? 0
+      : Math.max(margin.right, multiAxisClearance.value.right)
+    : isCleanView.value
+      ? 0
      : margin.right,
 )
 const innerWidth = computed(() =>
@@ -568,6 +595,7 @@ const gridCells = computed(() => {
    props.displayMode,
    pagedTracks.value.map(Boolean),
    yAxisLayout.value.horizontalGap,
+    !isCleanView.value,
  )
  return cells.map((cell, index) => ({ ...cell, series: pagedTracks.value[index] }))
 })
@@ -593,7 +621,7 @@ 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,
  }),
@@ -1004,7 +1032,7 @@ 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 +1046,7 @@ 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 +1321,7 @@ 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 +1352,7 @@ function handleSharedPointerMove(event: PointerEvent) {
    )
    commitHover(nextPoints, null, {
      x: resolvedChartLeftMargin.value + pointerX,
-      y: titleAreaHeight.value + margin.top + pointerY,
+      y: titleAreaHeight.value + chartTopMargin.value + pointerY,
    })
  })
 }
@@ -1842,8 +1870,12 @@ 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 +1921,8 @@ 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 +1946,7 @@ onBeforeUnmount(() => {
        />

        <WaveformAnnotationLayer
+          v-if="!isCleanView"
          :annotations="renderedAnnotations"
          :visible="annotationsVisible"
          @contextmenu="handleExistingAnnotationContextMenu"
@@ -1920,7 +1955,7 @@ 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 +1979,7 @@ onBeforeUnmount(() => {
        </g>

        <text
-          v-if="resolvedXLabel"
+          v-if="resolvedXLabel && !isCleanView"
          class="waveform-chart__label"
          :x="innerWidth / 2"
          :y="xAxisTitleY"
@@ -1966,7 +2001,7 @@ 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"
@@ -1978,7 +2013,7 @@ onBeforeUnmount(() => {
    />

    <WaveformAnnotationToolbar
-      v-if="showAnnotationToolbar"
+      v-if="showAnnotationToolbar && !isCleanView"
      :interaction-mode="activeInteractionMode"
      :annotations-visible="annotationsVisible"
      @update:interaction-mode="setInteractionMode"
@@ -1986,7 +2021,7 @@ onBeforeUnmount(() => {
    />

    <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 +2033,7 @@ onBeforeUnmount(() => {
    />

    <WaveformAnnotationContextMenu
+      v-if="!isCleanView"
      :visible="annotationInteraction.contextMenu.value !== null"
      :x="annotationInteraction.contextMenu.value?.x || 0"
      :y="annotationInteraction.contextMenu.value?.y || 0"
--- 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,
--- 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,
--- 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