mirror of
https://github.com/renbaoshuo/S2OJ.git
synced 2024-11-23 05:18:41 +00:00
96d4a3ecf7
Due to historical reasons, the code is in subfolder "1". With SVN removal, we place the code back and remove the annoying "1" folder.
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>
|