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example.typ

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+// Some definitions presupposed by pandoc's typst output.
+#let blockquote(body) = [
+  #set text( size: 0.92em )
+  #block(inset: (left: 1.5em, top: 0.2em, bottom: 0.2em))[#body]
+]
+
+#let horizontalrule = [
+  #line(start: (25%,0%), end: (75%,0%))
+]
+
+#let endnote(num, contents) = [
+  #stack(dir: ltr, spacing: 3pt, super[#num], contents)
+]
+
+#show terms: it => {
+  it.children
+    .map(child => [
+      #strong[#child.term]
+      #block(inset: (left: 1.5em, top: -0.4em))[#child.description]
+      ])
+    .join()
+}
+
+// Some quarto-specific definitions.
+
+#show raw.where(block: true): set block(
+    fill: luma(230),
+    width: 100%,
+    inset: 8pt,
+    radius: 2pt
+  )
+
+#let block_with_new_content(old_block, new_content) = {
+  let d = (:)
+  let fields = old_block.fields()
+  fields.remove("body")
+  if fields.at("below", default: none) != none {
+    // TODO: this is a hack because below is a "synthesized element"
+    // according to the experts in the typst discord...
+    fields.below = fields.below.amount
+  }
+  return block.with(..fields)(new_content)
+}
+
+#let unescape-eval(str) = {
+  return eval(str.replace("\\", ""))
+}
+
+#let empty(v) = {
+  if type(v) == "string" {
+    // two dollar signs here because we're technically inside
+    // a Pandoc template :grimace:
+    v.matches(regex("^\\s*$")).at(0, default: none) != none
+  } else if type(v) == "content" {
+    if v.at("text", default: none) != none {
+      return empty(v.text)
+    }
+    for child in v.at("children", default: ()) {
+      if not empty(child) {
+        return false
+      }
+    }
+    return true
+  }
+
+}
+
+// Subfloats
+// This is a technique that we adapted from https://github.com/tingerrr/subpar/
+#let quartosubfloatcounter = counter("quartosubfloatcounter")
+
+#let quarto_super(
+  kind: str,
+  caption: none,
+  label: none,
+  supplement: str,
+  position: none,
+  subrefnumbering: "1a",
+  subcapnumbering: "(a)",
+  body,
+) = {
+  context {
+    let figcounter = counter(figure.where(kind: kind))
+    let n-super = figcounter.get().first() + 1
+    set figure.caption(position: position)
+    [#figure(
+      kind: kind,
+      supplement: supplement,
+      caption: caption,
+      {
+        show figure.where(kind: kind): set figure(numbering: _ => numbering(subrefnumbering, n-super, quartosubfloatcounter.get().first() + 1))
+        show figure.where(kind: kind): set figure.caption(position: position)
+
+        show figure: it => {
+          let num = numbering(subcapnumbering, n-super, quartosubfloatcounter.get().first() + 1)
+          show figure.caption: it => {
+            num.slice(2) // I don't understand why the numbering contains output that it really shouldn't, but this fixes it shrug?
+            [ ]
+            it.body
+          }
+
+          quartosubfloatcounter.step()
+          it
+          counter(figure.where(kind: it.kind)).update(n => n - 1)
+        }
+
+        quartosubfloatcounter.update(0)
+        body
+      }
+    )#label]
+  }
+}
+
+// callout rendering
+// this is a figure show rule because callouts are crossreferenceable
+#show figure: it => {
+  if type(it.kind) != "string" {
+    return it
+  }
+  let kind_match = it.kind.matches(regex("^quarto-callout-(.*)")).at(0, default: none)
+  if kind_match == none {
+    return it
+  }
+  let kind = kind_match.captures.at(0, default: "other")
+  kind = upper(kind.first()) + kind.slice(1)
+  // now we pull apart the callout and reassemble it with the crossref name and counter
+
+  // when we cleanup pandoc's emitted code to avoid spaces this will have to change
+  let old_callout = it.body.children.at(1).body.children.at(1)
+  let old_title_block = old_callout.body.children.at(0)
+  let old_title = old_title_block.body.body.children.at(2)
+
+  // TODO use custom separator if available
+  let new_title = if empty(old_title) {
+    [#kind #it.counter.display()]
+  } else {
+    [#kind #it.counter.display(): #old_title]
+  }
+
+  let new_title_block = block_with_new_content(
+    old_title_block, 
+    block_with_new_content(
+      old_title_block.body, 
+      old_title_block.body.body.children.at(0) +
+      old_title_block.body.body.children.at(1) +
+      new_title))
+
+  block_with_new_content(old_callout,
+    block(below: 0pt, new_title_block) +
+    old_callout.body.children.at(1))
+}
+
+// 2023-10-09: #fa-icon("fa-info") is not working, so we'll eval "#fa-info()" instead
+#let callout(body: [], title: "Callout", background_color: rgb("#dddddd"), icon: none, icon_color: black) = {
+  block(
+    breakable: false, 
+    fill: background_color, 
+    stroke: (paint: icon_color, thickness: 0.5pt, cap: "round"), 
+    width: 100%, 
+    radius: 2pt,
+    block(
+      inset: 1pt,
+      width: 100%, 
+      below: 0pt, 
+      block(
+        fill: background_color, 
+        width: 100%, 
+        inset: 8pt)[#text(icon_color, weight: 900)[#icon] #title]) +
+      if(body != []){
+        block(
+          inset: 1pt, 
+          width: 100%, 
+          block(fill: white, width: 100%, inset: 8pt, body))
+      }
+    )
+}
+
+
+
+#let article(
+  title: none,
+  subtitle: none,
+  authors: none,
+  date: none,
+  abstract: none,
+  abstract-title: none,
+  cols: 1,
+  margin: (x: 1.25in, y: 1.25in),
+  paper: "us-letter",
+  lang: "en",
+  region: "US",
+  font: "linux libertine",
+  fontsize: 11pt,
+  title-size: 1.5em,
+  subtitle-size: 1.25em,
+  heading-family: "linux libertine",
+  heading-weight: "bold",
+  heading-style: "normal",
+  heading-color: black,
+  heading-line-height: 0.65em,
+  sectionnumbering: none,
+  toc: false,
+  toc_title: none,
+  toc_depth: none,
+  toc_indent: 1.5em,
+  doc,
+) = {
+  set page(
+    paper: paper,
+    margin: margin,
+    numbering: "1",
+  )
+  set par(justify: true)
+  set text(lang: lang,
+           region: region,
+           font: font,
+           size: fontsize)
+  set heading(numbering: sectionnumbering)
+  if title != none {
+    align(center)[#block(inset: 2em)[
+      #set par(leading: heading-line-height)
+      #if (heading-family != none or heading-weight != "bold" or heading-style != "normal"
+           or heading-color != black or heading-decoration == "underline"
+           or heading-background-color != none) {
+        set text(font: heading-family, weight: heading-weight, style: heading-style, fill: heading-color)
+        text(size: title-size)[#title]
+        if subtitle != none {
+          parbreak()
+          text(size: subtitle-size)[#subtitle]
+        }
+      } else {
+        text(weight: "bold", size: title-size)[#title]
+        if subtitle != none {
+          parbreak()
+          text(weight: "bold", size: subtitle-size)[#subtitle]
+        }
+      }
+    ]]
+  }
+
+  if authors != none {
+    let count = authors.len()
+    let ncols = calc.min(count, 3)
+    grid(
+      columns: (1fr,) * ncols,
+      row-gutter: 1.5em,
+      ..authors.map(author =>
+          align(center)[
+            #author.name \
+            #author.affiliation \
+            #author.email
+          ]
+      )
+    )
+  }
+
+  if date != none {
+    align(center)[#block(inset: 1em)[
+      #date
+    ]]
+  }
+
+  if abstract != none {
+    block(inset: 2em)[
+    #text(weight: "semibold")[#abstract-title] #h(1em) #abstract
+    ]
+  }
+
+  if toc {
+    let title = if toc_title == none {
+      auto
+    } else {
+      toc_title
+    }
+    block(above: 0em, below: 2em)[
+    #outline(
+      title: toc_title,
+      depth: toc_depth,
+      indent: toc_indent
+    );
+    ]
+  }
+
+  if cols == 1 {
+    doc
+  } else {
+    columns(cols, doc)
+  }
+}
+
+#set table(
+  inset: 6pt,
+  stroke: none
+)
+#import "@preview/mitex:0.2.4": *
+
+#show: doc => article(
+  title: [Math in Typst rendered through Mitex],
+  toc_title: [Table of contents],
+  toc_depth: 3,
+  cols: 1,
+  doc,
+)
+
+This a Typst document with a simple inline LaTeX equation #mi("\hat{F}") and a complicated LaTeX block equation:
+
+#mitex(`
+\begin{align*}
+\mathcal{\tilde{L}}^{(k)}
+&= \sum_{j=1}^{T} \sum_{i\in I_j} \Bigl[g_i f_k(\mathbf{x}_i) &+ \frac{1}{2} h_i f^2_k(\mathbf{x}_i)\Bigr] &+ \gamma T + \frac{1}{2} \lambda \sum_{j=1}^T w_j^2 \\
+&= \sum_{j=1}^{T} \sum_{i\in I_j} \Bigl[g_i w_j &+ \frac{1}{2} h_i w_j^2\Bigl] &+ \gamma T + \frac{1}{2} \lambda \sum_{j=1}^T w_j^2 \\
+&= \sum^T_{j=1} \Bigl[w_j\Bigl(\sum_{i\in I_j} g_i\Bigr) &+ \frac{1}{2} w_j^2 \Bigl(\sum_{i\in I_j} h_i + \lambda\Bigr) \Bigr] &+ \gamma T  \label{eq:dudu}
+\end{align*}
+`)
+
+
+
+

index.html

@@ -1,15 +1,15 @@
 <!DOCTYPE html>
 <html>
 <head>
-<title>example</title>
+<title>Math in Typst rendered through Mitex</title>
 <style type="text/css">
   body, html {
     margin: 0; padding: 0; height: 100%; overflow: hidden;
   }
 </style>
 </head>
 <body>
-<iframe id="pdf-js-viewer" src="pdfjs/web/viewer.html?file=../../example.pdf" title="example" frameborder="0" width="100%" height="100%"></iframe>
+<iframe id="pdf-js-viewer" src="pdfjs/web/viewer.html?file=../../example.pdf" title="Math in Typst rendered through Mitex" frameborder="0" width="100%" height="100%"></iframe>
 
 </body>
 </html>