mirror of
https://github.com/renbaoshuo/S2OJ.git
synced 2024-11-25 12:18:41 +00:00
86 lines
2.9 KiB
HTML
86 lines
2.9 KiB
HTML
|
<!doctype html>
|
||
|
|
|
||
|
|
<title>CodeMirror: B-Tree visualization</title>
|
||
|
|
<meta charset="utf-8"/>
|
||
|
|
<link rel=stylesheet href="../doc/docs.css">
|
||
|
|
|
||
|
|
<link rel="stylesheet" href="../lib/codemirror.css">
|
||
|
|
<script src="../lib/codemirror.js"></script>
|
||
|
|
<style type="text/css">
|
||
|
|
.lineblock { display: inline-block; margin: 1px; height: 5px; }
|
||
|
|
.CodeMirror {border: 1px solid #aaa; height: 400px}
|
||
|
|
</style>
|
||
|
|
<div id=nav>
|
||
|
|
<a href="http://codemirror.net"><img id=logo src="../doc/logo.png"></a>
|
||
|
|
|
||
|
|
<ul>
|
||
|
|
<li><a href="../index.html">Home</a>
|
||
|
|
<li><a href="../doc/manual.html">Manual</a>
|
||
|
|
<li><a href="https://github.com/marijnh/codemirror">Code</a>
|
||
|
|
</ul>
|
||
|
|
<ul>
|
||
|
|
<li><a class=active href="#">B-Tree visualization</a>
|
||
|
|
</ul>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<article>
|
||
|
|
<h2>B-Tree visualization</h2>
|
||
|
|
<form><textarea id="code" name="code">type here, see a summary of the document b-tree below</textarea></form>
|
||
|
|
</div>
|
||
|
|
<div style="display: inline-block; height: 402px; overflow-y: auto" id="output"></div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<script id="me">
|
||
|
|
var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
|
||
|
|
lineNumbers: true,
|
||
|
|
lineWrapping: true
|
||
|
|
});
|
||
|
|
var updateTimeout;
|
||
|
|
editor.on("change", function(cm) {
|
||
|
|
clearTimeout(updateTimeout);
|
||
|
|
updateTimeout = setTimeout(updateVisual, 200);
|
||
|
|
});
|
||
|
|
updateVisual();
|
||
|
|
|
||
|
|
function updateVisual() {
|
||
|
|
var out = document.getElementById("output");
|
||
|
|
out.innerHTML = "";
|
||
|
|
|
||
|
|
function drawTree(out, node) {
|
||
|
|
if (node.lines) {
|
||
|
|
out.appendChild(document.createElement("div")).innerHTML =
|
||
|
|
"<b>leaf</b>: " + node.lines.length + " lines, " + Math.round(node.height) + " px";
|
||
|
|
var lines = out.appendChild(document.createElement("div"));
|
||
|
|
lines.style.lineHeight = "6px"; lines.style.marginLeft = "10px";
|
||
|
|
for (var i = 0; i < node.lines.length; ++i) {
|
||
|
|
var line = node.lines[i], lineElt = lines.appendChild(document.createElement("div"));
|
||
|
|
lineElt.className = "lineblock";
|
||
|
|
var gray = Math.min(line.text.length * 3, 230), col = gray.toString(16);
|
||
|
|
if (col.length == 1) col = "0" + col;
|
||
|
|
lineElt.style.background = "#" + col + col + col;
|
||
|
|
lineElt.style.width = Math.max(Math.round(line.height / 3), 1) + "px";
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
out.appendChild(document.createElement("div")).innerHTML =
|
||
|
|
"<b>node</b>: " + node.size + " lines, " + Math.round(node.height) + " px";
|
||
|
|
var sub = out.appendChild(document.createElement("div"));
|
||
|
|
sub.style.paddingLeft = "20px";
|
||
|
|
for (var i = 0; i < node.children.length; ++i)
|
||
|
|
drawTree(sub, node.children[i]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
drawTree(out, editor.getDoc());
|
||
|
|
}
|
||
|
|
|
||
|
|
function fillEditor() {
|
||
|
|
var sc = document.getElementById("me");
|
||
|
|
var doc = (sc.textContent || sc.innerText || sc.innerHTML).replace(/^\s*/, "") + "\n";
|
||
|
|
doc += doc; doc += doc; doc += doc; doc += doc; doc += doc; doc += doc;
|
||
|
|
editor.setValue(doc);
|
||
|
|
}
|
||
|
|
</script>
|
||
|
|
|
||
|
|
<p><button onclick="fillEditor()">Add a lot of content</button></p>
|
||
|
|
|
||
|
|
</article>
|