File size: 1,325 Bytes
f56a29b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | import { walker } from '../walker.js'
export function mfrac(element, targetParent, previousSibling, nextSibling, ancestors) {
if (element.children.length !== 2) {
// treat as mrow
return targetParent
}
const numerator = element.children[0]
const denumerator = element.children[1]
const numeratorTarget = {
name: 'm:num',
type: 'tag',
attribs: {},
children: []
}
const denumeratorTarget = {
name: 'm:den',
type: 'tag',
attribs: {},
children: []
}
ancestors = [...ancestors]
ancestors.unshift(element)
walker(numerator, numeratorTarget, false, false, ancestors)
walker(denumerator, denumeratorTarget, false, false, ancestors)
const lt = element.attribs?.linethickness
const fracType = (lt === '0' || lt === '0px' || lt === '0em' || lt === '0pt') ? 'noBar' : 'bar'
targetParent.children.push({
type: 'tag',
name: 'm:f',
attribs: {},
children: [
{
type: 'tag',
name: 'm:fPr',
attribs: {},
children: [
{
type: 'tag',
name: 'm:type',
attribs: {
'm:val': fracType
},
children: []
}
]
},
numeratorTarget,
denumeratorTarget
]
})
// Don't iterate over children in the usual way.
}
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