feat(视口): 支持恢复受控缩放范围

README.md

@@ -253,6 +253,20 @@ X 轴且包含多个轨道时使用按稳定 track ID 索引的 `yRanges`。平
 重置组件内部缩放并触发 `zoom-reset`；调用方应在事件中取消区间请求并恢复首次完整数据。
 外部重置按钮也可以通过模板引用调用组件公开的 `resetViewport()` 方法，然后执行相同的数据恢复逻辑。
 
+宿主在替换局部数据后如果需要恢复之前保存的 X 视口，可以调用公开的
+`setViewportDomain(domain, trackIndex?)`。传入范围使用原始秒坐标，组件会按当前数据边界、
+`xDomainStrategy`、`minZoomSpan` 和 `minVisiblePoints` 重新约束；无效范围会被忽略。共享
+X 轴模式直接传入一个范围，独立模式可以按实际 `trackIndex` 分别设置（省略 `trackIndex`
+时应用到当前所有图框）：
+
+```ts
+chartRef.value?.setViewportDomain(previousDomain)
+chartRef.value?.setViewportDomain(trackDomain, trackIndex)
+```
+
+建议在 `data` 引用更新后调用该方法。组件也会在数据引用变更时重投影当前内部视口，避免新
+数据边界使旧 transform 失效；`resetViewport(trackIndex?)` 的既有行为保持不变。
+
 没有显式配置初始范围时，可以通过 `xDomainStrategy` 将数据范围扩展为便于阅读的视口端点。
 默认的 `{ type: 'data' }` 保持数据最小值和最大值不变；`type: 'nice'` 使用固定刻度数量计算
 易读边界，且只扩展视口，不修改原始点位、tooltip、标注或缩放事件值：

package.json

@@ -1,6 +1,6 @@
 {
   "name": "waveform-analysis",
-  "version": "0.1.38",
+  "version": "0.1.39",
   "main": "./dist/index.cjs",
   "module": "./dist/index.js",
   "types": "./dist/types/index.d.ts",

src/components/WaveformChart.vue

@@ -36,6 +36,7 @@ const controller = useWaveformChartController(props as ResolvedWaveformChartProp
 
 defineExpose({
   resetViewport: controller.resetViewport,
+  setViewportDomain: controller.setViewportDomain,
 })
 </script>
 

src/components/core/useWaveformChartController.ts

@@ -259,6 +259,9 @@ export function useWaveformChartController(
     trackLayouts,
     innerWidth,
     innerHeight,
+    sharedZoomDomain,
+    initialXDomain,
+    sharedTransform,
     activeInteractionMode,
     hiddenSeriesIdSet,
     internalHiddenSeriesIds,

src/components/core/useWaveformChartLifecycle.ts

@@ -39,6 +39,9 @@ interface LifecycleContext {
   trackLayouts: ComputedRef<TrackLayout[]>
   innerWidth: ComputedRef<number>
   innerHeight: ComputedRef<number>
+  sharedZoomDomain: ComputedRef<[number, number]>
+  initialXDomain: ComputedRef<[number, number]>
+  sharedTransform: ShallowRef<ZoomTransform>
   activeInteractionMode: ComputedRef<string | undefined>
   hiddenSeriesIdSet: ComputedRef<Set<string>>
   internalHiddenSeriesIds: Ref<Set<string>>
@@ -93,6 +96,9 @@ export function useWaveformChartLifecycle(context: LifecycleContext) {
     trackLayouts,
     innerWidth,
     innerHeight,
+    sharedZoomDomain,
+    initialXDomain,
+    sharedTransform,
     activeInteractionMode,
     hiddenSeriesIdSet,
     internalHiddenSeriesIds,
@@ -144,25 +150,24 @@ export function useWaveformChartLifecycle(context: LifecycleContext) {
     emit('page-change', nextPage, pageCount.value)
   }
 
+  let pendingSharedXDomain: [number, number] | undefined
   let pendingIndependentXDomains: Array<[number, number] | undefined> | undefined
 
   function handleBeforeDataReferenceChange() {
-    if (props.displayMode !== 'independent') return
+    if (props.displayMode === 'independent') {
+      pendingSharedXDomain = undefined
       pendingIndependentXDomains = trackLayouts.value.map((track) => {
-      const configuredDomain =
+        const current = track.xScale.domain() as [number, number]
-        props.initialXDomains?.[track.series.trackId ?? track.series.id] ??
+        const boundary = resolveInitialTrackDomain(track)
-        props.initialXDomains?.[track.series.id] ??
+        return current[1] - current[0] < boundary[1] - boundary[0] - 1e-12 ? current : undefined
-        props.initialXDomain
-      if (
-        !configuredDomain ||
-        !Number.isFinite(configuredDomain[0]) ||
-        !Number.isFinite(configuredDomain[1]) ||
-        configuredDomain[0] === configuredDomain[1]
-      ) {
-        return undefined
-      }
-      return track.xScale.domain() as [number, number]
       })
+      return
+    }
+    pendingIndependentXDomains = undefined
+    const current = sharedZoomDomain.value
+    const boundary = initialXDomain.value
+    pendingSharedXDomain =
+      current[1] - current[0] < boundary[1] - boundary[0] - 1e-12 ? [...current] : undefined
   }
 
   function handleDataReferenceChange() {
@@ -186,10 +191,15 @@ export function useWaveformChartLifecycle(context: LifecycleContext) {
         })
         independentTransforms.value = nextTransforms
         pendingIndependentXDomains = undefined
-        void nextTick(configureZoom)
+      } else if (props.displayMode !== 'independent' && pendingSharedXDomain) {
-        return
+        const boundary = initialXDomain.value
+        const groups = trackLayouts.value
+          .filter((track) => track.hasVisibleSeries)
+          .map((track) => track.seriesList)
+        const domain = constrainZoomDomain(pendingSharedXDomain, boundary, groups, props)
+        sharedTransform.value = transformForDomain(domain, boundary, innerWidth.value)
+        pendingSharedXDomain = undefined
       }
-      pendingIndependentXDomains = undefined
       configureZoom()
     })
   }

src/components/interaction/useWaveformViewport.ts

@@ -11,6 +11,7 @@ import type {
 import type { AnnotationSeriesCandidate } from '../annotation'
 import { tryReleasePointerCapture } from './pointerCapture'
 import { transitionViewportInteraction } from './viewportInteractionState'
+import { createViewportDomainSetter } from './viewportDomain'
 import { constrainZoomDomain, transformForDomain } from './zoomConstraints'
 interface ViewportContext {
   props: ResolvedWaveformChartProps
@@ -344,6 +345,20 @@ export function useWaveformViewport(context: ViewportContext) {
     editorSeriesOptions.value = []
     void nextTick(configureZoom)
   }
+  const setViewportDomain = createViewportDomainSetter({
+    props,
+    trackLayouts,
+    initialXDomain,
+    resolveInitialTrackDomain,
+    innerWidth,
+    sharedTransform,
+    independentTransforms,
+    cancelPendingZoom,
+    cancelViewportDrag,
+    clearHover,
+    editorSeriesOptions,
+    configureZoom,
+  })
   const requestViewportReset = (event: MouseEvent) => {
     if (isPresentationMode.value || !props.zoomable || !isZoomMode.value) return
     if (props.displayMode === 'independent') {
@@ -372,6 +387,7 @@ export function useWaveformViewport(context: ViewportContext) {
     finishViewportDrag,
     cancelViewportDrag,
     resetViewport,
+    setViewportDomain,
     requestViewportReset,
   }
 }

src/components/interaction/viewportDomain.ts

@@ -0,0 +1,60 @@
+import { nextTick, type ComputedRef, type Ref, type ShallowRef } from 'vue'
+import type { ZoomTransform } from 'd3'
+
+import type { TrackLayout } from '../core/types'
+import type { ResolvedWaveformChartProps } from '../core/waveformChartTypes'
+import type { AnnotationSeriesCandidate } from '../annotation'
+import { constrainZoomDomain, transformForDomain } from './zoomConstraints'
+
+interface ViewportDomainContext {
+  props: ResolvedWaveformChartProps
+  trackLayouts: ComputedRef<TrackLayout[]>
+  initialXDomain: ComputedRef<[number, number]>
+  resolveInitialTrackDomain: (track: TrackLayout) => [number, number]
+  innerWidth: ComputedRef<number>
+  sharedTransform: ShallowRef<ZoomTransform>
+  independentTransforms: ShallowRef<ZoomTransform[]>
+  cancelPendingZoom: () => void
+  cancelViewportDrag: () => void
+  clearHover: () => void
+  editorSeriesOptions: Ref<AnnotationSeriesCandidate[]>
+  configureZoom: () => void
+}
+
+export function createViewportDomainSetter(context: ViewportDomainContext) {
+  return (domain: [number, number], trackIndex?: number) => {
+    if (!Number.isFinite(domain[0]) || !Number.isFinite(domain[1]) || domain[0] === domain[1])
+      return
+    context.cancelPendingZoom()
+    context.cancelViewportDrag()
+    if (context.props.displayMode === 'independent') {
+      const indexes =
+        trackIndex === undefined
+          ? context.trackLayouts.value.map((track) => track.index)
+          : [trackIndex]
+      const nextTransforms = [...context.independentTransforms.value]
+      indexes.forEach((index) => {
+        const track = context.trackLayouts.value.find((item) => item.index === index)
+        if (!track) return
+        const boundary = context.resolveInitialTrackDomain(track)
+        const constrained = constrainZoomDomain(domain, boundary, [track.seriesList], context.props)
+        nextTransforms[index] = transformForDomain(constrained, boundary, track.width)
+      })
+      context.independentTransforms.value = nextTransforms
+    } else {
+      const boundary = context.initialXDomain.value
+      const groups = context.trackLayouts.value
+        .filter((track) => track.hasVisibleSeries)
+        .map((track) => track.seriesList)
+      const constrained = constrainZoomDomain(domain, boundary, groups, context.props)
+      context.sharedTransform.value = transformForDomain(
+        constrained,
+        boundary,
+        context.innerWidth.value,
+      )
+    }
+    context.clearHover()
+    context.editorSeriesOptions.value = []
+    void nextTick(context.configureZoom)
+  }
+}

src/components/waveformChartCases/viewportReset.test.ts

@@ -119,6 +119,108 @@ describe('WaveformChart viewport reset', () => {
     expect(wrapper.findAll('.waveform-chart__axis-endpoint--end')[0].text()).toBe('1000')
   })
 
+  it('keeps a controlled shared viewport when the data reference changes', async () => {
+    const wrapper = await mountSizedChart(
+      {
+        kind: 'points',
+        points: [
+          { x: 0, y: 0 },
+          { x: 1, y: 1 },
+        ],
+      },
+      { displayMode: 'separated' },
+    )
+    const chart = wrapper.vm as unknown as {
+      setViewportDomain: (domain: [number, number], trackIndex?: number) => void
+    }
+    chart.setViewportDomain([0.25, 0.75])
+    await flushPromises()
+
+    const startBefore = Number(wrapper.get('.waveform-chart__axis-endpoint--start').text())
+    const endBefore = Number(wrapper.get('.waveform-chart__axis-endpoint--end').text())
+    expect(startBefore).toBeGreaterThan(0)
+    expect(endBefore).toBeLessThan(1000)
+
+    await wrapper.setProps({
+      data: {
+        kind: 'points',
+        points: [
+          { x: 0, y: 10 },
+          { x: 1, y: 11 },
+        ],
+      },
+    })
+    await flushPromises()
+
+    expect(Number(wrapper.get('.waveform-chart__axis-endpoint--start').text())).toBeCloseTo(
+      startBefore,
+      10,
+    )
+    expect(Number(wrapper.get('.waveform-chart__axis-endpoint--end').text())).toBeCloseTo(
+      endBefore,
+      10,
+    )
+  })
+
+  it('keeps independently controlled track viewports when the data reference changes', async () => {
+    const wrapper = await mountSizedChart(gridSeries(2), {
+      displayMode: 'independent',
+      grid: { rowCount: 1, columnCount: 2 },
+    })
+    const chart = wrapper.vm as unknown as {
+      setViewportDomain: (domain: [number, number], trackIndex?: number) => void
+    }
+    chart.setViewportDomain([0.2, 0.8], 0)
+    chart.setViewportDomain([0.1, 0.9], 1)
+    await flushPromises()
+
+    const endpoints = () =>
+      wrapper.findAll('.waveform-chart__track').map((track) => ({
+        start: track.get('.waveform-chart__axis-endpoint--start').text(),
+        end: track.get('.waveform-chart__axis-endpoint--end').text(),
+      }))
+    const endpointsBefore = endpoints()
+    expect(Number(endpointsBefore[0].start)).toBeGreaterThan(0)
+    expect(Number(endpointsBefore[0].end)).toBeLessThan(1000)
+    expect(Number(endpointsBefore[1].start)).toBeGreaterThan(0)
+    expect(Number(endpointsBefore[1].end)).toBeLessThan(1000)
+
+    await wrapper.setProps({ data: gridSeries(2) })
+    await flushPromises()
+
+    const endpointsAfter = endpoints()
+    endpointsAfter.forEach((endpoint, index) => {
+      expect(Number(endpoint.start)).toBeCloseTo(Number(endpointsBefore[index].start), 10)
+      expect(Number(endpoint.end)).toBeCloseTo(Number(endpointsBefore[index].end), 10)
+    })
+  })
+
+  it('ignores invalid domains and applies viewport constraints', async () => {
+    const wrapper = await mountSizedChart(
+      {
+        kind: 'points',
+        points: [
+          { x: 0, y: 0 },
+          { x: 1, y: 1 },
+        ],
+      },
+      { displayMode: 'separated', minZoomSpan: 0.2 },
+    )
+    const chart = wrapper.vm as unknown as {
+      setViewportDomain: (domain: [number, number], trackIndex?: number) => void
+    }
+    chart.setViewportDomain([Number.NaN, 0.5])
+    await flushPromises()
+    expect(wrapper.get('.waveform-chart__axis-endpoint--start').text()).toBe('0')
+    expect(wrapper.get('.waveform-chart__axis-endpoint--end').text()).toBe('1000')
+
+    chart.setViewportDomain([0.49, 0.51])
+    await flushPromises()
+    const start = Number(wrapper.get('.waveform-chart__axis-endpoint--start').text())
+    const end = Number(wrapper.get('.waveform-chart__axis-endpoint--end').text())
+    expect(end - start).toBeGreaterThanOrEqual(200)
+  })
+
   it('resets shared and independent explicit domains to their included nice bounds', async () => {
     const shared = await mountSizedChart(
       {