Function parseDlblBool

apps/sim/lib/pptx-renderer/renderer/chart-renderer.ts:446–451

In OOXML, boolean elements are true when present unless val="0" or val="false".

(dLbls: SafeXmlNode, childName: string)

/** In OOXML, boolean elements are true when present unless val="0" or val="false". */
function parseDlblBool(dLbls: SafeXmlNode, childName: string): boolean {
  const el = dLbls.child(childName)
  if (!el.exists()) return false
  const val = el.attr('val')
  return val !== '0' && val !== 'false'
}

/**
 * Extract text color from a txPr element: txPr > p > pPr > defRPr > solidFill.