initial kodama site

2 files changed, 424 insertions, 0 deletions

diff --git a/trees/_lib/kodama.typ b/trees/_lib/kodama.typ
new file mode 100644
index 0000000..495e85c
--- /dev/null
+++ b/trees/_lib/kodama.typ
@@ -0,0 +1,415 @@
+// Copyright (c) 2025 Kodama Project. All rights reserved.
+// Released under the GPL-3.0 license as described in the file LICENSE.
+// Authors: Alias Qli (@AliasQli), Kokic (@kokic)
+// Last modified time: 2026/03/06
+
+/**
+ * There are some external inputs:
+ *   sys.inputs.path: relative path of the typst file
+ *   sys.inputs.random: a random number in 0..INT64_MAX (note, it's a string)
+ */
+
+#let repri(r) = if type(r) == str { r } else {
+  repr(r)
+}
+
+#let with-target-check(callback) = context {
+  let target-value = if "target" in dictionary(std) { std.target() } else { "paged" }
+  callback(target-value)
+}
+
+#let compatibled-html(f, content-provider) = with-target-check((export-target) => {
+  let content = content-provider()
+  if export-target == "html" { f()(content) } else {
+    content
+  }
+})
+
+#let auto-frame(content) = compatibled-html(() => html.frame, () => content)
+#let auto-figure(content) = with-target-check((export-target) => {
+  if export-target == "html" {
+    html.figure(content) // main.css: `figure { text-align: center; }`
+  } else {
+    align(center, content)
+  }
+})
+
+#let html-font-size = 15.525pt
+
+// paged
+#let paged-metadata-text-color = gray
+#let small-block-below = 0.65em
+#let heading-font-weight = "black"
+#let slug-color = gray
+#let taxon-color = gray
+
+#let is_preset_key(key) = {
+  (
+    "title",
+    "taxon",
+    "parent",
+    "page-title",
+    "backlinks",
+    "transparent-backlinks",
+    "references",
+    "asref",
+    "asback",
+    "footer-mode",
+  ).contains(key)
+}
+
+#let dotted-stroke = (thickness: 0.1em, dash: ("dot", "dot")/* = thickness */)
+
+#let span-slug(slug) = underline(stroke: dotted-stroke, text(size: 1.083em, fill: slug-color, raw("[" + slug + "]")))
+
+#let taxon-upper(taxon) = upper(taxon.at(0)) + taxon.slice(1) + "."
+
+#let metadata(table) = {
+  let title = table.at("title", default: "")
+  let taxon = table.at("taxon", default: none)
+
+  let table-pairs = table.pairs()
+  let custom-pairs = table-pairs.filter(e => not is_preset_key(e.at(0)))
+
+  with-target-check(
+    (export-target) => {
+      if export-target == "html" {
+        table-pairs.map(e => {
+          let value = e.at(1)
+          let v = value
+          let attrs = (key: e.at(0))
+
+          if type(value) != content {
+            v = none
+            attrs.insert("value", repri(value))
+          }
+          html.elem("kodama-meta", v, attrs: attrs)
+        }).join()
+      } else {
+        if taxon != none {
+          text(weight: heading-font-weight, fill: taxon-color, size: 1.35em, taxon-upper(taxon))
+        }
+        block(above: small-block-below, below: small-block-below, text(size: 1.5em, weight: heading-font-weight, title))
+        block(custom-pairs.map(e =>
+        e.at(1)).join(text(" · ")))
+      }
+    },
+  )
+}
+
+#let external(dest, content) = link(dest, underline(content))
+
+/// 
+/// - raw-tex (string): raw TeX math source code without delimiters
+/// -> string
+#let tex(raw-tex) = "$" + raw-tex.text + "$"
+
+#let local(slug, text: none) = with-target-check((export-target) => {
+  if export-target == "html" {
+    html.elem(
+      "span", // Make it an inline element. This is automatically removed by kodama.
+      {
+        let v = if text == none { none } else { text }
+        let attrs = (slug: slug)
+
+        if text != none and type(text) != content {
+          v = none
+          attrs.insert("value", repri(text))
+        }
+
+        html.elem("kodama-local", v, attrs: attrs)
+      },
+    )
+  } else {
+    let label = if text == none { slug } else { text }
+    underline(stroke: dotted-stroke, label)
+  }
+})
+
+#let embed(url, title, numbering: false, open: true, catalog: true, display-options: false) = {
+  with-target-check((export-target) => {
+    if export-target == "html" {
+      let v = title
+      let attrs = (url: url, numbering: repri(numbering), open: repri(open), catalog: repri(catalog))
+
+      if type(title) != content {
+        v = none
+        attrs.insert("value", repri(title))
+      }
+
+      html.elem("kodama-embed", v, attrs: attrs)
+    } else {
+      block(below: small-block-below, text(size: 1.083em, weight: heading-font-weight, title))
+      if display-options {
+        block(text(fill: paged-metadata-text-color)[`numbering:` #numbering ~ `open:` #open ~ `toc:` #catalog])
+      }
+    }
+  })
+}
+
+#let subtree(
+  slug: none, // default: anonymous subtree
+  title: none,
+  taxon: none,
+  numbering: false,
+  open: true,
+  catalog: true,
+  content,
+) = with-target-check((export-target) => {
+  if export-target == "html" {
+    let attrs = (numbering: repri(numbering), open: repri(open), catalog: repri(catalog))
+    if slug != none { attrs.insert("slug", repri(slug)) }
+    if title != none { attrs.insert("title", repri(title)) }
+    if taxon != none { attrs.insert("taxon", repri(taxon)) }
+    html.elem("kodama-subtree", content, attrs: attrs)
+  } else {
+    block(below: small-block-below)[
+      #if taxon != none {
+        text(size: 1.083em, weight: heading-font-weight, fill: taxon-color, taxon-upper(taxon))
+      }
+      #text(size: 1.083em, weight: heading-font-weight, title)
+      #if slug != none { span-slug(slug) }
+    ]
+    content
+  }
+})
+
+// Semantic subtree sugar helpers aligned with markdown subtree tags.
+#let exegesis(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "exegesis" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let definition(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "definition" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let proposition(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "proposition" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let remark(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "remark" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let conjecture(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "conjecture" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let postulate(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "postulate" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let claim(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "claim" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let observation(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "observation" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let fact(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "fact" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let hypothesis(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "hypothesis" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let axiom(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "axiom" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let lemma(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "lemma" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let theorem(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "theorem" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let corollary(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "corollary" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let example(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "example" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+#let proof(slug: none, title: none, taxon: none, numbering: false, open: true, catalog: true, content) = subtree(
+  slug: slug,
+  title: title,
+  taxon: if taxon == none { "proof" } else { taxon },
+  numbering: numbering,
+  open: open,
+  catalog: catalog,
+  content,
+)
+
+
+/**
+ * HTML: SVG formula rendering vertical position adjustment
+ */
+
+#let bounded(eq) = text(top-edge: "bounds", bottom-edge: "bounds", eq)
+#let to-em(pt) = str(pt / text.size.pt()) + "em"
+
+// a dict that stores the height of equations
+#let equations-height-dict = state("eq_height_dict", (:))
+#let is-inside-pin = state("inside_pin", false)
+
+#let pin(label) = context {
+  let height = here().position().y
+  equations-height-dict.update(it => {
+    if label in it.keys() or height < 0.000001pt { it } else {
+      it.insert(label, height); it
+    }
+  })
+}
+
+#let add-pin(eq) = {
+  let label = repr(eq)
+  is-inside-pin.update(true)
+  $ inline(pin(label)#bounded(eq)) $
+  is-inside-pin.update(false)
+}
+
+#let kodama(doc) = {
+  with-target-check(
+    (export-target) => {
+      if export-target == "paged" {
+        set page(margin: 2em, paper: "iso-b6", height: auto)
+        set par(spacing: 1.5em)
+        doc
+      } else {
+        show math.equation.where(block: false): it => {
+          with-target-check(
+            (export-target) => {
+              if export-target == "html" {
+                let label = repr(it)
+                if label in equations-height-dict.final().keys() {
+                  let height = equations-height-dict.final().at(label, default: none)
+                  equations-height-dict.update(d => {
+                    d.insert(label, height); d
+                  })
+                  let y-length = measure(bounded(it)).height
+                  let shift = y-length - height
+                  box(html.elem("span", attrs: (style: "vertical-align: -" + to-em(shift.pt()) + ";"), html.frame(bounded(it))))
+                } else {
+                  box(html.frame(add-pin(it)))
+                }
+              } else {
+                it
+              }
+            },
+          )
+        }
+        show math.equation.where(block: true): it => {
+          with-target-check(
+            (export-target) => {
+              if export-target == "html" {
+                if is-inside-pin.get() {
+                  html.frame(it)
+                } else {
+                  html.elem("div", attrs: (style: "display: flex; justify-content: center; width: 100%; margin: 1em 0;"), html.frame(it))
+                }
+              } else {
+                it
+              }
+            },
+          )
+        }
+        doc
+      }
+    },
+  )
+}
diff --git a/trees/index.typst b/trees/index.typst
new file mode 100644
index 0000000..97aada1
--- /dev/null
+++ b/trees/index.typst
@@ -0,0 +1,9 @@
+#import "_lib/kodama.typ": *
+#show: kodama
+
+#metadata(("title": "0x4200.cafe"))
+
+
+hello!
+
+