Function parseChartXml

apps/sim/lib/pptx-renderer/renderer/chart-renderer.ts:3187–3296

(chartXml: SafeXmlNode, ctx: RenderContext)

 * Exported for unit testing.
 */
export function parseChartXml(chartXml: SafeXmlNode, ctx: RenderContext): ParseChartResult {
  const chartCtx = createChartRenderContext(chartXml, ctx)
  const chartPalette = buildChartPalette(chartXml, chartCtx)
  // Navigate: chartSpace > chart > plotArea
  const chart = chartXml.child('chart')
  const plotArea = chart.child('plotArea')

  if (!plotArea.exists()) {
    return { option: { title: { text: 'Unsupported chart', left: 'center' } } }
  }

  // Extract background colors
  const { chartBg, plotAreaBg } = extractBackgroundColors(chartXml, chart, chartCtx)

  const chartTypeEntries = CHART_TYPE_ELEMENTS.map((typeName) => {
    const chartTypeNode = plotArea.child(typeName)
    if (!chartTypeNode.exists()) return null
    const seriesArr = parseSeries(chartTypeNode, chartCtx)
    if (seriesArr.length === 0) return null
    return { typeName, chartTypeNode, seriesArr }
  }).filter(
    (
      entry
    ): entry is { typeName: OoxmlChartType; chartTypeNode: SafeXmlNode; seriesArr: SeriesData[] } =>
      entry !== null
  )

  for (const [index, entry] of chartTypeEntries.entries()) {
    let option = buildOptionForChartType(
      entry.typeName,
      entry.chartTypeNode,
      chart,
      entry.seriesArr,
      chartCtx
    )
    if (!option) continue

    if (index === 0 && chartTypeEntries.length > 1 && isCartesianComboCapable(entry.typeName)) {
      for (const comboEntry of chartTypeEntries.slice(1)) {
        if (!isCartesianComboCapable(comboEntry.typeName)) continue
        const comboOption = buildOptionForChartType(
          comboEntry.typeName,
          comboEntry.chartTypeNode,
          chart,
          comboEntry.seriesArr,
          chartCtx
        )
        if (!comboOption) continue
        option = mergeCartesianComboOptions(option, comboOption)
      }
    }

    // Apply chart-space default font sizes to text elements that use hardcoded defaults
    const defaultFs = extractChartDefaultFontSize(chartXml)
    if (defaultFs) {
      applyDefaultFontSizes(option, defaultFs)
    }
    const defaultFontFamily = getChartThemeFontFamily(chartCtx)