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<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>hongo</title>
<style>
body {
margin: 0;
padding: 40px 32px 64px;
color: #1f1f1f;
background: #fff;
font-family: system-ui, -apple-system, sans-serif;
font-size: 14px;
line-height: 1.9;
}
.page {
max-width: 1440px;
margin: 0 auto;
}
[hidden] {
display: none !important;
}
h1 {
font-size: 19px;
font-weight: 500;
margin: 0 0 6px;
}
.note {
color: #767676;
font-size: 13px;
margin: 0 0 28px;
}
.split {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 28px;
align-items: start;
}
.source {
display: block;
width: 100%;
height: 62vh;
min-height: 380px;
box-sizing: border-box;
padding: 14px 16px;
color: #1f1f1f;
background: #fff;
border: 1px solid #dcdcdc;
border-radius: 3px;
font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
font-size: 12px;
line-height: 1.75;
resize: vertical;
}
.source:focus {
outline: none;
border-color: #1f1f1f;
}
.bar {
display: flex;
align-items: center;
gap: 12px;
margin-top: 14px;
}
button {
padding: 9px 18px;
color: #fff;
background: #1f1f1f;
border: 0;
border-radius: 3px;
font-family: inherit;
font-size: 13px;
cursor: pointer;
}
button.quiet {
color: #1f1f1f;
background: #efefef;
}
button:disabled {
opacity: 0.4;
cursor: default;
}
.state {
color: #767676;
font-size: 12px;
}
.wrong {
margin: 14px 0 0;
padding: 12px 14px;
color: #a33;
background: #fcf4f4;
border-radius: 3px;
font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
font-size: 12px;
line-height: 1.7;
white-space: pre-wrap;
word-break: break-all;
}
.view {
display: block;
width: 100%;
height: 62vh;
min-height: 380px;
background: #f4f4f4;
border: 0;
border-radius: 3px;
}
.empty {
display: flex;
align-items: center;
justify-content: center;
width: 100%;
height: 62vh;
min-height: 380px;
color: #767676;
background: #f4f4f4;
border-radius: 3px;
font-size: 13px;
}
.link {
display: flex;
gap: 20px;
margin-top: 14px;
}
.save {
color: #1f1f1f;
font-size: 13px;
}
@media (max-width: 900px) {
.split {
grid-template-columns: 1fr;
}
}
</style>
</head>
<body>
<div class="page">
<h1>hongo</h1>
<p class="note">LaTeX の原稿を貼って押すと PDF になります。組むのは Rust の hongo で、TeX は使いません。</p>
<div class="split">
<div>
<textarea id="source" class="source" spellcheck="false"></textarea>
<div class="bar">
<button id="convert" type="button">PDF にする</button>
<button id="reset" class="quiet" type="button">見本に戻す</button>
<span id="state" class="state"></span>
</div>
<pre id="wrong" class="wrong" hidden></pre>
</div>
<div>
<div id="empty" class="empty">ここに出来上がりが出ます</div>
<iframe id="view" class="view" title="出来上がり" hidden></iframe>
<div class="link">
<a id="save" class="save" download="hongo.pdf" hidden>PDF を保存する</a>
<a id="open" class="save" target="_blank" rel="noopener" hidden>別のタブで開く</a>
</div>
</div>
</div>
</div>
<script>
const source = document.getElementById('source')
const convert = document.getElementById('convert')
const reset = document.getElementById('reset')
const state = document.getElementById('state')
const wrong = document.getElementById('wrong')
const view = document.getElementById('view')
const empty = document.getElementById('empty')
const save = document.getElementById('save')
const open = document.getElementById('open')
let address = ''
async function loadSample() {
const answer = await fetch('/sample')
source.value = await answer.text()
}
async function make() {
convert.disabled = true
state.textContent = '組んでいます'
wrong.hidden = true
try {
const answer = await fetch('/pdf', {method: 'POST', body: source.value})
if (!answer.ok) {
wrong.textContent = await answer.text()
wrong.hidden = false
state.textContent = ''
return
}
const data = await answer.blob()
if (address) {
URL.revokeObjectURL(address)
}
address = URL.createObjectURL(data)
view.src = address
view.hidden = false
empty.hidden = true
save.href = address
save.hidden = false
open.href = address
open.hidden = false
const page = answer.headers.get('X-Page') || '?'
const missing = decodeURIComponent(answer.headers.get('X-Missing') || '')
const size = Math.round(data.size / 1024)
state.textContent = missing
? page + ' ページ / ' + size + ' キロバイト - 書体にない字: ' + missing
: page + ' ページ / ' + size + ' キロバイト'
} catch (reason) {
wrong.textContent = String(reason)
wrong.hidden = false
state.textContent = ''
} finally {
convert.disabled = false
}
}
convert.addEventListener('click', make)
reset.addEventListener('click', loadSample)
source.addEventListener('keydown', (event) => {
if ((event.metaKey || event.ctrlKey) && event.key === 'Enter') {
make()
}
})
loadSample().then(make)
</script>
</body>
</html>
