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index.html
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<!DOCTYPE html>
<meta charset="utf8">
<meta name=viewport content="width=device-width, initial-scale=1">
<title>scratchblocks dev</title>
<meta name=description content="Use scratchblocks to write pictures of Scratch scripts in forum posts.">
<!--
<link rel=stylesheet href="https://fonts.googleapis.com/css?family=Noto+Sans:400,700">
-->
<link rel=stylesheet href="index.css">
<style>
#preview > svg {
display: block;
margin-bottom: 20px;
}
#preview:before {
position: relative;
left: 1px;
min-width: 695px;
min-height: 842px;
z-index: 1;
transform: scale(0.66666);
transform-origin: 0 0;
}
.cmp #preview:before,
.diff #preview:before {
position: absolute;
display: block;
content: "";
background: url(screenshot.png) no-repeat -2px -3px;
}
.cmp.diff #preview:before {
-webkit-filter: invert(100%) opacity(50%);
}
.diff #preview:before {
-webkit-filter: opacity(50%);
}
.cmp img {
display: none;
}
body {
background: #dddede;
}
</style>
<!---------------------------------------------------------------------------->
<h1>
<a id=title href="/">scratchblocks dev</a>
<span>
<a target="_blank" href="http://wiki.scratch.mit.edu/wiki/Block_Plugin/Syntax">help</a>
<a href="http://github.com/blob8108/scratchblocks2">github</a>
<a href="generator/"><b>generate</b></a>
</span>
</h1>
<div id="side">
<div>
<select id="choose-lang">
<option value="">Select language…
</select>
<small id=lang-status></small>
</div>
<textarea id="editor"></textarea>
</div>
<pre id="preview" class="blocks"></pre>
<!---------------------------------------------------------------------------->
<script src="build/scratchblocks.min.js"></script>
<script src="build/translations-all.js"></script>
<script>
var editor = document.getElementById('editor');
var exportDropdown;
var exportSVGLink;
var exportPNGLink;
var obj = {};
extractHash();
editor.addEventListener('input', function(e) {
obj.script = editor.value;
objUpdated();
});
var chooseLang = document.getElementById('choose-lang');
var languageCodes = Object.keys(scratchblocks.allLanguages)
languageCodes.sort()
languageCodes.forEach(function(code) {
if (code === "en") return
var option = document.createElement("option")
option.value = code
var language = scratchblocks.allLanguages[code]
option.textContent = language.name && language.altName ? `${language.name} — ${language.altName}` : language.name || language.altName || code
chooseLang.appendChild(option)
})
var incompleteLangs = [];
var newOnlyLangs = [];
[].slice.apply(chooseLang.options).forEach(function(el) {
var text = el.textContent;
if (/\*/.test(text)) incompleteLangs.push(el.value);
if (/\†/.test(text)) newOnlyLangs.push(el.value);
});
var langStatus = document.createTextNode("");
document.getElementById('lang-status').appendChild(langStatus);
chooseLang.addEventListener('change', function(e) {
obj.lang = chooseLang.value;
console.log(obj);
objUpdated();
});
/* Extract hash from location. Returns true if changed */
function extractHash() {
var newObj = decodeHash();
if (!newObj || !newObj.script) {
newObj = {
script: "",
lang: obj.lang,
};
}
if (newObj.lang !== obj.lang || newObj.script !== obj.script) {
obj = newObj;
return true;
}
return false;
}
function decodeHash() {
var hash = location.href.split('#')[1];
if (!hash) return;
if (!/^\?/.test(hash)) {
return {
script: decodeURIComponent(hash),
};
} else {
var newObj = {};
var parts = hash.slice(1).split('&');
parts.forEach(function(part) {
var match = /^(.*)=(.*)$/.exec(part);
if (!match) return;
var key = decodeURIComponent(match[1]);
var value = decodeURIComponent(match[2]);
if (key === "lang" || key === "script") {
newObj[key] = value;
}
});
return newObj;
}
}
function download(filename, content) {
const elem = document.createElement("a");
elem.hidden = true;
elem.download = filename;
elem.href = content;
document.body.appendChild(elem);
elem.click();
document.body.removeChild(elem);
}
function objUpdated() {
// set hash
if (obj.lang) {
location.hash = ('#?lang=' + encodeURIComponent(obj.lang) +
'&script='+encodeURIComponent(obj.script));
} else if (obj.script) {
location.hash = '#'+encodeURIComponent(obj.script);
} else {
if (!(location.hash == '' || location.hash == '#')) {
location.hash = '#';
}
}
// TODO: don't spam history on every keypress!
/*
// renderMatching API example
preview.innerHTML = obj.script;
scratchblocks.renderMatching('pre.blocks', {
languages: ['en', obj.lang],
render: function(doc, cb) {
doc.render(function(svg) {
var el = document.createElement('div');
el.appendChild(svg);
var link = exportSVGLink = document.createElement('a');
exportLink.href = scratchblocks.exportSVG(svg);
exportLink.setAttribute('download', 'scratchblocks.svg');
exportLink.textContent = "Export SVG";
exportLink.className = 'export-link';
var p = document.createElement('p');
p.appendChild(exportLink);
el.appendChild(p);
cb(el);
});
},
});
*/
var doc = window.doc = scratchblocks.parse(obj.script, {
languages: obj.lang ? ['en', obj.lang] : ['en'],
});
// doc.translate(scratchblocks.allLanguages['de']);
// var doc = window.doc = scratchblocks.fromJSON({
// scripts: eval(obj.script),
// });
console.log(scratchblocks.stringify(doc));
var docView3HighContrast = scratchblocks.newView(doc, {
style: "scratch3-high-contrast",
scale: 0.675
});
var docView3 = scratchblocks.newView(doc, {
style: "scratch3",
scale: 0.675
});
var docView2 = scratchblocks.newView(doc, {
style: "scratch2",
scale: 1
});
var svg3HighContrast = docView3HighContrast.render();
var svg3 = docView3.render();
var svg2 = docView2.render();
preview.innerHTML = "";
preview.appendChild(svg3HighContrast);
preview.appendChild(svg3);
preview.appendChild(svg2);
svg3HighContrast.classList.add("scratch3");
svg3.classList.add("scratch3")
// Need to add manually if calling View#render (folks, this is why you shouldn't use private API!)
svg3HighContrast.classList.add("scratchblocks-style-scratch3-high-contrast")
svg3.classList.add("scratchblocks-style-scratch3")
const getSelectedView = () => {
switch (exportDropdown.value) {
case "3-high-contrast":
return docView3HighContrast;
case "2":
return docView2;
default:
return docView3;
}
}
// add export link
setTimeout(function() {
if (!exportSVGLink) exportSVGLink = document.createElement('a');
exportSVGLink.onclick = () => download("scratchblocks.svg", getSelectedView().exportSVG());
exportSVGLink.textContent = "Export SVG";
exportSVGLink.className = 'export-link';
if (!exportSVGLink.isConnected) document.body.appendChild(exportSVGLink);
if (!exportPNGLink) exportPNGLink = document.createElement('a');
exportPNGLink.onclick = () => getSelectedView().exportPNG((url) => download("scratchblocks.png", url));
exportPNGLink.textContent = "Export PNG";
exportPNGLink.className = 'export-link';
if (!exportPNGLink.isConnected) document.body.appendChild(exportPNGLink);
if (!exportDropdown) {
exportDropdown = document.createElement("select");
exportDropdown.appendChild(Object.assign(document.createElement("option"), {
label: "3.0 (original)",
value: "3",
selected: true,
}));
exportDropdown.appendChild(Object.assign(document.createElement("option"), {
label: "3.0 (high contrast)",
value: "3-high-contrast",
}));
exportDropdown.appendChild(Object.assign(document.createElement("option"), {
label: "2.0",
value: "2",
}));
exportDropdown.className = 'export-link';
}
if (!exportDropdown.isConnected) document.body.appendChild(exportDropdown);
}, 0);
// update language dropdown
var lang = scratchblocks.allLanguages[obj.lang]
langStatus.textContent = lang ? `${lang.percentTranslated}%` : "";
}
setInterval(function() {
if (extractHash()) {
updatedFromHash();
}
}, 200);
function updatedFromHash() {
editor.value = obj.script;
objUpdated();
chooseLang.value = obj.lang || "";
}
updatedFromHash();
</script>
<script>
function showDiff(e) {
document.body.classList[e.ctrlKey ? 'add' : 'remove']('cmp');
document.body.classList[e.altKey ? 'add' : 'remove']('diff');
}
document.addEventListener('keydown', showDiff);
document.addEventListener('keyup', showDiff);
</script>