--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mercurial/graphmod.py	Wed Jun 18 07:06:41 2008 +0200
@@ -0,0 +1,74 @@
+# Revision graph generator for Mercurial
+#
+# Copyright 2008 Dirkjan Ochtman <dirkjan@ochtman.nl>
+# Copyright 2007 Joel Rosdahl <joel@rosdahl.net>
+#
+# This software may be used and distributed according to the terms of
+# the GNU General Public License, incorporated herein by reference.
+
+from node import nullrev, short
+import ui, hg, util, templatefilters
+
+def graph(repo, start_rev, stop_rev):
+    """incremental revision grapher
+
+    This generator function walks through the revision history from
+    revision start_rev to revision stop_rev (which must be less than
+    or equal to start_rev) and for each revision emits tuples with the
+    following elements:
+
+      - Current node
+      - Column and color for the current node
+      - Edges; a list of (col, next_col, color) indicating the edges between
+        the current node and its parents.
+      - First line of the changeset description
+      - The changeset author
+      - The changeset date/time
+    """
+
+    assert start_rev >= stop_rev
+    curr_rev = start_rev
+    revs = []
+    cl = repo.changelog
+    colors = {}
+    new_color = 1
+
+    while curr_rev >= stop_rev:
+        node = cl.node(curr_rev)
+
+        # Compute revs and next_revs
+        if curr_rev not in revs:
+            revs.append(curr_rev) # new head
+            colors[curr_rev] = new_color
+            new_color += 1
+
+        idx = revs.index(curr_rev)
+        color = colors.pop(curr_rev)
+        next = revs[:]
+
+        # Add parents to next_revs
+        parents = [x for x in cl.parentrevs(curr_rev) if x != nullrev]
+        addparents = [p for p in parents if p not in next]
+        next[idx:idx + 1] = addparents
+
+        # Set colors for the parents
+        for i, p in enumerate(addparents):
+            if not i:
+                colors[p] = color
+            else:
+                colors[p] = new_color
+                new_color += 1
+
+        # Add edges to the graph
+        edges = []
+        for col, r in enumerate(revs):
+            if r in next:
+                edges.append((col, next.index(r), colors[r]))
+            elif r == curr_rev:
+                for p in parents:
+                    edges.append((col, next.index(p), colors[p]))
+
+        # Yield and move on
+        yield (repo.changectx(curr_rev), (idx, color), edges)
+        revs = next
+        curr_rev -= 1

--- a/mercurial/hgweb/webcommands.py	Sun Jun 15 16:05:46 2008 +0100
+++ b/mercurial/hgweb/webcommands.py	Wed Jun 18 07:06:41 2008 +0200
@@ -5,14 +5,15 @@
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
-import os, mimetypes, re
+import os, mimetypes, re, cgi
 import webutil
-from mercurial import revlog, archival
+from mercurial import revlog, archival, templatefilters
 from mercurial.node import short, hex, nullid
-from mercurial.util import binary
+from mercurial.util import binary, datestr
 from mercurial.repo import RepoError
 from common import paritygen, staticfile, get_contact, ErrorResponse
 from common import HTTP_OK, HTTP_NOT_FOUND
+from mercurial import graphmod
 
 # __all__ is populated with the allowed commands. Be sure to add to it if
 # you're adding a new command, or the new command won't work.
@@ -20,7 +21,7 @@
 __all__ = [
    'log', 'rawfile', 'file', 'changelog', 'shortlog', 'changeset', 'rev',
    'manifest', 'tags', 'summary', 'filediff', 'diff', 'annotate', 'filelog',
-   'archive', 'static',
+   'archive', 'static', 'graph',
 ]
 
 def log(web, req, tmpl):
@@ -574,3 +575,37 @@
                         os.path.join(web.templatepath, "static"),
                         untrusted=False)
     return [staticfile(static, fname, req)]
+
+def graph(web, req, tmpl):
+    rev = webutil.changectx(web.repo, req).rev()
+    revcount = int(req.form.get('revcount', [25])[0])
+    bg_height = 39
+
+    max_rev = web.repo.changelog.count() - 1
+    revnode = web.repo.changelog.node(rev)
+    revnode_hex = hex(revnode)
+    uprev = min(max_rev, rev + revcount)
+    downrev = max(0, rev - revcount)
+    lessrev = max(0, rev - revcount / 2)
+
+    maxchanges = web.maxshortchanges or web.maxchanges
+    count = web.repo.changelog.count()
+    changenav = webutil.revnavgen(rev, maxchanges, count, web.repo.changectx)
+
+    tree = list(graphmod.graph(web.repo, rev, rev - revcount))
+    canvasheight = (len(tree) + 1) * bg_height - 27;
+
+    data = []
+    for i, (ctx, vtx, edges) in enumerate(tree):
+        node = short(ctx.node())
+        age = templatefilters.age(ctx.date())
+        desc = templatefilters.firstline(ctx.description())
+        desc = cgi.escape(desc)
+        user = cgi.escape(templatefilters.person(ctx.user()))
+        data.append((node, vtx, edges, desc, user, age, ctx.tags()))
+
+    return tmpl('graph', rev=rev, revcount=revcount, uprev=uprev,
+                lessrev=lessrev, revcountmore=revcount and 2 * revcount or 1,
+                revcountless=revcount / 2, downrev=downrev,
+                canvasheight=canvasheight, bg_height=bg_height,
+                jsdata=data, node=revnode_hex, changenav=changenav)

--- a/mercurial/templatefilters.py	Sun Jun 15 16:05:46 2008 +0100
+++ b/mercurial/templatefilters.py	Wed Jun 18 07:06:41 2008 +0200
@@ -122,6 +122,36 @@
             .replace("'", ''')) # ' invalid in HTML
     return re.sub('[\x00-\x08\x0B\x0C\x0E-\x1F]', ' ', text)
 
+_escapes = [
+    ('\\', '\\\\'), ('"', '\\"'), ('\t', '\\t'), ('\n', '\\n'),
+    ('\r', '\\r'), ('\f', '\\f'), ('\b', '\\b'),
+]
+
+def json(obj):
+    if obj is None or obj is False or obj is True:
+        return {None: 'null', False: 'false', True: 'true'}[obj]
+    elif isinstance(obj, int) or isinstance(obj, float):
+        return str(obj)
+    elif isinstance(obj, str):
+        for k, v in _escapes:
+            obj = obj.replace(k, v)
+        return '"%s"' % obj
+    elif isinstance(obj, unicode):
+        return json(obj.encode('utf-8'))
+    elif hasattr(obj, 'keys'):
+        out = []
+        for k, v in obj.iteritems():
+            s = '%s: %s' % (json(k), json(v))
+            out.append(s)
+        return '{' + ', '.join(out) + '}'
+    elif hasattr(obj, '__iter__'):
+        out = []
+        for i in obj:
+            out.append(json(i))
+        return '[' + ', '.join(out) + ']'
+    else:
+        raise TypeError('cannot encode type %s' % obj.__class__.__name__)
+
 filters = {
     "addbreaks": nl2br,
     "basename": os.path.basename,
@@ -150,5 +180,5 @@
     "user": lambda x: util.shortuser(x),
     "stringescape": lambda x: x.encode('string_escape'),
     "xmlescape": xmlescape,
-    }
-
+    "json": json,
+}

--- a/templates/coal/changeset.tmpl	Sun Jun 15 16:05:46 2008 +0100
+++ b/templates/coal/changeset.tmpl	Wed Jun 18 07:06:41 2008 +0200
@@ -10,6 +10,7 @@
 </div>
 <ul>
  <li><a href="{url}shortlog{sessionvars%urlparameter}">log</a></li>
+ <li><a href="{url}graph{sessionvars%urlparameter}">graph</a></li>
  <li><a href="{url}tags{sessionvars%urlparameter}">tags</a></li>
 </ul>
 <ul>

--- a/templates/coal/error.tmpl	Sun Jun 15 16:05:46 2008 +0100
+++ b/templates/coal/error.tmpl	Wed Jun 18 07:06:41 2008 +0200
@@ -11,6 +11,7 @@
 </div>
 <ul>
 <li><a href="{url}log{sessionvars%urlparameter}">log</a></li>
+<li><a href="{url}graph{sessionvars%urlparameter}">graph</a></li>
 <li><a href="{url}tags{sessionvars%urlparameter}">tags</a></li>
 </ul>
 </div>

--- a/templates/coal/fileannotate.tmpl	Sun Jun 15 16:05:46 2008 +0100
+++ b/templates/coal/fileannotate.tmpl	Wed Jun 18 07:06:41 2008 +0200
@@ -11,6 +11,7 @@
 </div>
 <ul>
 <li><a href="{url}shortlog/{sessionvars%urlparameter}">log</a></li>
+<li><a href="{url}graph/{sessionvars%urlparameter}">graph</a></li>
 <li><a href="{url}tags{sessionvars%urlparameter}">tags</a></li>
 </ul>
 

--- a/templates/coal/filediff.tmpl	Sun Jun 15 16:05:46 2008 +0100
+++ b/templates/coal/filediff.tmpl	Wed Jun 18 07:06:41 2008 +0200
@@ -11,6 +11,7 @@
 </div>
 <ul>
 <li><a href="{url}shortlog/{sessionvars%urlparameter}">log</a></li>
+<li><a href="{url}graph/{sessionvars%urlparameter}">graph</a></li>
 <li><a href="{url}tags{sessionvars%urlparameter}">tags</a></li>
 </ul>
 <ul>

--- a/templates/coal/filelog.tmpl	Sun Jun 15 16:05:46 2008 +0100
+++ b/templates/coal/filelog.tmpl	Wed Jun 18 07:06:41 2008 +0200
@@ -16,6 +16,7 @@
 </div>
 <ul>
 <li><a href="{url}shortlog/{sessionvars%urlparameter}">log</a></li>
+<li><a href="{url}graph/{sessionvars%urlparameter}">graph</a></li>
 <li><a href="{url}tags{sessionvars%urlparameter}">tags</a></li>
 </ul>
 <ul>

--- a/templates/coal/filerevision.tmpl	Sun Jun 15 16:05:46 2008 +0100
+++ b/templates/coal/filerevision.tmpl	Wed Jun 18 07:06:41 2008 +0200
@@ -11,6 +11,7 @@
 </div>
 <ul>
 <li><a href="{url}shortlog/{sessionvars%urlparameter}">log</a></li>
+<li><a href="{url}graph/{sessionvars%urlparameter}">graph</a></li>
 <li><a href="{url}tags{sessionvars%urlparameter}">tags</a></li>
 </ul>
 <ul>

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/templates/coal/graph.tmpl	Wed Jun 18 07:06:41 2008 +0200
@@ -0,0 +1,114 @@
+{header}
+<title>{repo|escape}: revision graph</title>
+<link rel="alternate" type="application/atom+xml"
+   href="{url}atom-log" title="Atom feed for {repo|escape}: log">
+<link rel="alternate" type="application/rss+xml"
+   href="{url}rss-log" title="RSS feed for {repo|escape}: log">
+<!--[if IE]><script type="text/javascript" src="{staticurl}excanvas.js"></script><![endif]-->
+</head>
+<body>
+
+<div class="container">
+<div class="menu">
+<div class="logo">
+<a href="http://www.selenic.com/mercurial/">
+<img src="{staticurl}hglogo.png" width=75 height=90 border=0 alt="mercurial"></a>
+</div>
+<ul>
+<li><a href="{url}shortlog{sessionvars%urlparameter}">log</a></li>
+<li class="active">graph</li>
+<li><a href="{url}tags{sessionvars%urlparameter}">tags</a></li>
+</ul>
+<ul>
+<li><a href="{url}rev/{node|short}{sessionvars%urlparameter}">changeset</a></li>
+<li><a href="{url}file/{node|short}{path|urlescape}{sessionvars%urlparameter}">browse</a></li>
+</ul>
+</div>
+
+<div class="main">
+<h2>{repo|escape}</h2>
+<h3>graph</h3>
+
+<form class="search" action="{url}log">
+{sessionvars%hiddenformentry}
+<p><input name="rev" id="search1" type="text" size="30"></p>
+</form>
+
+<div class="navigate">
+<a href="{url}graph/{uprev}{sessionvars%urlparameter}?revcount={revcountless}">less</a>
+<a href="{url}graph/{uprev}{sessionvars%urlparameter}?revcount={revcountmore}">more</a>
+| {changenav%navshortentry}
+</div>
+
+<div id="noscript">The revision graph only works with JavaScript-enabled browsers.</div>
+
+<div id="wrapper">
+<ul id="nodebgs"></ul>
+<canvas id="graph" width="224" height="{canvasheight}"></canvas>
+<ul id="graphnodes"></ul>
+</div>
+
+<script type="text/javascript" src="{staticurl}graph.js"></script>
+<script>
+
+document.getElementById('noscript').style.visibility = 'hidden';
+
+data = {jsdata|json};
+graph = new Graph();
+graph.scale({bg_height});
+
+graph.edge = function(x0, y0, x1, y1, color) {
+	
+	this.setColor(color, 0.0, 0.65);
+	this.ctx.beginPath();
+	this.ctx.moveTo(x0, y0);
+	this.ctx.lineTo(x1, y1);
+	this.ctx.stroke();
+	
+}
+
+var nodes = document.getElementById('graphnodes');
+var nodebgs = document.getElementById('nodebgs');
+
+var revlink = '<li style="_STYLE"><span class="desc">';
+revlink += '<a href="{url}rev/_NODEID{sessionvars%urlparameter}" title="_NODEID">_DESC</a>';
+revlink += '</span><span class="tag">_TAGS</span>';
+revlink += '<span class="info">_DATE ago, by _USER</span></li>';
+
+graph.vertex = function(x, y, color, parity, cur) {
+	
+	this.ctx.beginPath();
+	color = this.setColor(color, 0.25, 0.75);
+	this.ctx.arc(x, y, radius, 0, Math.PI * 2, true);
+	this.ctx.fill();
+	
+	var bg = '<li class="bg parity' + parity + '"></li>';
+	nodebgs.innerHTML += bg;
+	
+	var left = (this.columns + 1) * this.bg_height;
+	var nstyle = 'padding-left: ' + left + 'px;';
+	var item = revlink.replace(/_STYLE/, nstyle);
+	item = item.replace(/_PARITY/, 'parity' + parity);
+	item = item.replace(/_NODEID/, cur[0]);
+	item = item.replace(/_NODEID/, cur[0]);
+	item = item.replace(/_DESC/, cur[3]);
+	item = item.replace(/_USER/, cur[4]);
+	item = item.replace(/_DATE/, cur[5]);
+	item = item.replace(/_TAGS/, cur[6].join('&nbsp; '));
+	nodes.innerHTML += item;
+	
+}
+
+graph.render(data);
+</script>
+
+<div class="navigate">
+<a href="{url}graph/{uprev}{sessionvars%urlparameter}?revcount={revcountless}">less</a>
+<a href="{url}graph/{uprev}{sessionvars%urlparameter}?revcount={revcountmore}">more</a>
+| {changenav%navshortentry}
+</div>
+
+</div>
+</div>
+
+{footer}

--- a/templates/coal/manifest.tmpl	Sun Jun 15 16:05:46 2008 +0100
+++ b/templates/coal/manifest.tmpl	Wed Jun 18 07:06:41 2008 +0200
@@ -11,6 +11,7 @@
 </div>
 <ul>
 <li><a href="{url}shortlog/{sessionvars%urlparameter}">log</a></li>
+<li><a href="{url}graph/{sessionvars%urlparameter}">graph</a></li>
 <li><a href="{url}tags{sessionvars%urlparameter}">tags</a></li>
 </ul>
 <ul>

--- a/templates/coal/map	Sun Jun 15 16:05:46 2008 +0100
+++ b/templates/coal/map	Wed Jun 18 07:06:41 2008 +0200
@@ -8,6 +8,7 @@
 changelog = shortlog.tmpl
 shortlog = shortlog.tmpl
 shortlogentry = shortlogentry.tmpl
+graph = graph.tmpl
 
 naventry = '<a href="{url}log/{node|short}{sessionvars%urlparameter}">{label|escape}</a> '
 navshortentry = '<a href="{url}shortlog/{node|short}{sessionvars%urlparameter}">{label|escape}</a> '

--- a/templates/coal/search.tmpl	Sun Jun 15 16:05:46 2008 +0100
+++ b/templates/coal/search.tmpl	Wed Jun 18 07:06:41 2008 +0200
@@ -11,6 +11,7 @@
 </div>
 <ul>
 <li><a href="{url}shortlog{sessionvars%urlparameter}">log</a></li>
+<li><a href="{url}graph{sessionvars%urlparameter}">graph</a></li>
 <li><a href="{url}tags{sessionvars%urlparameter}">tags</a></li>
 </ul>
 </div>

--- a/templates/coal/shortlog.tmpl	Sun Jun 15 16:05:46 2008 +0100
+++ b/templates/coal/shortlog.tmpl	Wed Jun 18 07:06:41 2008 +0200
@@ -15,6 +15,7 @@
 </div>
 <ul>
 <li class="active">log</li>
+<li><a href="{url}graph{sessionvars%urlparameter}">graph</a></li>
 <li><a href="{url}tags{sessionvars%urlparameter}">tags</a></li>
 </ul>
 <ul>

--- a/templates/coal/tags.tmpl	Sun Jun 15 16:05:46 2008 +0100
+++ b/templates/coal/tags.tmpl	Wed Jun 18 07:06:41 2008 +0200
@@ -15,6 +15,7 @@
 </div>
 <ul>
 <li><a href="{url}shortlog{sessionvars%urlparameter}">log</a></li>
+<li><a href="{url}graph{sessionvars%urlparameter}">graph</a></li>
 <li class="active">tags</li>
 </ul>
 </div>

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/templates/static/excanvas.js	Wed Jun 18 07:06:41 2008 +0200
@@ -0,0 +1,19 @@
+if(!window.CanvasRenderingContext2D){(function(){var I=Math,i=I.round,L=I.sin,M=I.cos,m=10,A=m/2,Q={init:function(a){var b=a||document;if(/MSIE/.test(navigator.userAgent)&&!window.opera){var c=this;b.attachEvent("onreadystatechange",function(){c.r(b)})}},r:function(a){if(a.readyState=="complete"){if(!a.namespaces["s"]){a.namespaces.add("g_vml_","urn:schemas-microsoft-com:vml")}var b=a.createStyleSheet();b.cssText="canvas{display:inline-block;overflow:hidden;text-align:left;width:300px;height:150px}g_vml_\\:*{behavior:url(#default#VML)}";
+var c=a.getElementsByTagName("canvas");for(var d=0;d<c.length;d++){if(!c[d].getContext){this.initElement(c[d])}}}},q:function(a){var b=a.outerHTML,c=a.ownerDocument.createElement(b);if(b.slice(-2)!="/>"){var d="/"+a.tagName,e;while((e=a.nextSibling)&&e.tagName!=d){e.removeNode()}if(e){e.removeNode()}}a.parentNode.replaceChild(c,a);return c},initElement:function(a){a=this.q(a);a.getContext=function(){if(this.l){return this.l}return this.l=new K(this)};a.attachEvent("onpropertychange",V);a.attachEvent("onresize",
+W);var b=a.attributes;if(b.width&&b.width.specified){a.style.width=b.width.nodeValue+"px"}else{a.width=a.clientWidth}if(b.height&&b.height.specified){a.style.height=b.height.nodeValue+"px"}else{a.height=a.clientHeight}return a}};function V(a){var b=a.srcElement;switch(a.propertyName){case "width":b.style.width=b.attributes.width.nodeValue+"px";b.getContext().clearRect();break;case "height":b.style.height=b.attributes.height.nodeValue+"px";b.getContext().clearRect();break}}function W(a){var b=a.srcElement;
+if(b.firstChild){b.firstChild.style.width=b.clientWidth+"px";b.firstChild.style.height=b.clientHeight+"px"}}Q.init();var R=[];for(var E=0;E<16;E++){for(var F=0;F<16;F++){R[E*16+F]=E.toString(16)+F.toString(16)}}function J(){return[[1,0,0],[0,1,0],[0,0,1]]}function G(a,b){var c=J();for(var d=0;d<3;d++){for(var e=0;e<3;e++){var g=0;for(var h=0;h<3;h++){g+=a[d][h]*b[h][e]}c[d][e]=g}}return c}function N(a,b){b.fillStyle=a.fillStyle;b.lineCap=a.lineCap;b.lineJoin=a.lineJoin;b.lineWidth=a.lineWidth;b.miterLimit=
+a.miterLimit;b.shadowBlur=a.shadowBlur;b.shadowColor=a.shadowColor;b.shadowOffsetX=a.shadowOffsetX;b.shadowOffsetY=a.shadowOffsetY;b.strokeStyle=a.strokeStyle;b.d=a.d;b.e=a.e}function O(a){var b,c=1;a=String(a);if(a.substring(0,3)=="rgb"){var d=a.indexOf("(",3),e=a.indexOf(")",d+1),g=a.substring(d+1,e).split(",");b="#";for(var h=0;h<3;h++){b+=R[Number(g[h])]}if(g.length==4&&a.substr(3,1)=="a"){c=g[3]}}else{b=a}return[b,c]}function S(a){switch(a){case "butt":return"flat";case "round":return"round";
+case "square":default:return"square"}}function K(a){this.a=J();this.m=[];this.k=[];this.c=[];this.strokeStyle="#000";this.fillStyle="#000";this.lineWidth=1;this.lineJoin="miter";this.lineCap="butt";this.miterLimit=m*1;this.globalAlpha=1;this.canvas=a;var b=a.ownerDocument.createElement("div");b.style.width=a.clientWidth+"px";b.style.height=a.clientHeight+"px";b.style.overflow="hidden";b.style.position="absolute";a.appendChild(b);this.j=b;this.d=1;this.e=1}var j=K.prototype;j.clearRect=function(){this.j.innerHTML=
+"";this.c=[]};j.beginPath=function(){this.c=[]};j.moveTo=function(a,b){this.c.push({type:"moveTo",x:a,y:b});this.f=a;this.g=b};j.lineTo=function(a,b){this.c.push({type:"lineTo",x:a,y:b});this.f=a;this.g=b};j.bezierCurveTo=function(a,b,c,d,e,g){this.c.push({type:"bezierCurveTo",cp1x:a,cp1y:b,cp2x:c,cp2y:d,x:e,y:g});this.f=e;this.g=g};j.quadraticCurveTo=function(a,b,c,d){var e=this.f+0.6666666666666666*(a-this.f),g=this.g+0.6666666666666666*(b-this.g),h=e+(c-this.f)/3,l=g+(d-this.g)/3;this.bezierCurveTo(e,
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/templates/static/graph.js	Wed Jun 18 07:06:41 2008 +0200
@@ -0,0 +1,127 @@
+// branch_renderer.js - Rendering of branch DAGs on the client side
+//
+// Copyright 2008 Dirkjan Ochtman <dirkjan AT ochtman DOT nl>
+// Copyright 2006 Alexander Schremmer <alex AT alexanderweb DOT de>
+//
+// derived from code written by Scott James Remnant <scott@ubuntu.com>
+// Copyright 2005 Canonical Ltd.
+//
+// This software may be used and distributed according to the terms
+// of the GNU General Public License, incorporated herein by reference.
+
+var colors = [
+	[ 1.0, 0.0, 0.0 ],
+	[ 1.0, 1.0, 0.0 ],
+	[ 0.0, 1.0, 0.0 ],
+	[ 0.0, 1.0, 1.0 ],
+	[ 0.0, 0.0, 1.0 ],
+	[ 1.0, 0.0, 1.0 ]
+];
+
+function Graph() {
+	
+	this.canvas = document.getElementById('graph');
+	if (navigator.userAgent.indexOf('MSIE') >= 0) this.canvas = window.G_vmlCanvasManager.initElement(this.canvas);
+	this.ctx = this.canvas.getContext('2d');
+	this.ctx.strokeStyle = 'rgb(0, 0, 0)';
+	this.ctx.fillStyle = 'rgb(0, 0, 0)';
+	this.cur = [0, 0];
+	this.line_width = 3;
+	this.bg = [0, 4];
+	this.cell = [2, 0];
+	this.columns = 0;
+	this.revlink = '';
+	
+	this.scale = function(height) {
+		this.bg_height = height;
+		this.box_size = Math.floor(this.bg_height / 1.2);
+		this.cell_height = this.box_size;
+	}
+	
+	function colorPart(num) {
+		num *= 255
+		num = num < 0 ? 0 : num;
+		num = num > 255 ? 255 : num;
+		var digits = Math.round(num).toString(16);
+		if (num < 16) {
+			return '0' + digits;
+		} else {
+			return digits;
+		}
+	}
+
+	this.setColor = function(color, bg, fg) {
+		
+		// Set the colour.
+		//
+		// Picks a distinct colour based on an internal wheel; the bg
+		// parameter provides the value that should be assigned to the 'zero'
+		// colours and the fg parameter provides the multiplier that should be
+		// applied to the foreground colours.
+		
+		color %= colors.length;
+		var red = (colors[color][0] * fg) || bg;
+		var green = (colors[color][1] * fg) || bg;
+		var blue = (colors[color][2] * fg) || bg;
+		red = Math.round(red * 255);
+		green = Math.round(green * 255);
+		blue = Math.round(blue * 255);
+		var s = 'rgb(' + red + ', ' + green + ', ' + blue + ')';
+		this.ctx.strokeStyle = s;
+		this.ctx.fillStyle = s;
+		return s;
+		
+	}
+
+	this.render = function(data) {
+		
+		for (var i in data) {
+			
+			var parity = i % 2;
+			this.cell[1] += this.bg_height;
+			this.bg[1] += this.bg_height;
+			
+			var cur = data[i];
+			var node = cur[1];
+			var edges = cur[2];
+			var fold = false;
+			
+			for (var j in edges) {
+				
+				line = edges[j];
+				start = line[0];
+				end = line[1];
+				color = line[2];
+
+				if (end > this.columns) {
+					this.columns += 1;
+				} else if (start == this.columns && start > end) {
+					var fold = true;
+				}
+				
+				x0 = this.cell[0] + this.box_size * start + this.box_size / 2;
+				y0 = this.bg[1] - this.bg_height / 2;
+				x1 = this.cell[0] + this.box_size * end + this.box_size / 2;
+				y1 = this.bg[1] + this.bg_height / 2;
+				
+				this.edge(x0, y0, x1, y1, color);
+				
+			}
+			
+			// Draw the revision node in the right column
+			
+			column = node[0]
+			color = node[1]
+			
+			radius = this.box_size / 8;
+			x = this.cell[0] + this.box_size * column + this.box_size / 2;
+			y = this.bg[1] - this.bg_height / 2;
+			this.vertex(x, y, color, parity, cur);
+			
+			if (fold) this.columns -= 1;
+			
+		}
+		
+	}
+
+}

--- a/templates/static/style-coal.css	Sun Jun 15 16:05:46 2008 +0100
+++ b/templates/static/style-coal.css	Wed Jun 18 07:06:41 2008 +0200
@@ -154,3 +154,44 @@
   margin: 1em 0 1em 0;
   padding: .3em;
 }
+
+div#wrapper {
+	position: relative;
+	border-top: 1px solid black;
+	border-bottom: 1px solid black;
+	margin: 0;
+	padding: 0;
+}
+
+canvas {
+	position: absolute;
+	z-index: 5;
+	top: -0.7em;
+	margin: 0;
+}
+
+ul#graphnodes {
+	position: absolute;
+	z-index: 10;
+	top: -1.0em;
+	list-style: none inside none;
+	padding: 0;
+}
+
+ul#nodebgs {
+	list-style: none inside none;
+	padding: 0;
+	margin: 0;
+	top: -0.7em;
+}
+
+ul#graphnodes li, ul#nodebgs li {
+	height: 39px;
+}
+
+ul#graphnodes li .info {
+	display: block;
+	font-size: 70%;
+	position: relative;
+	top: -3px;
+}