c.changeset = repo.get_changeset(repo._get_revision(revision))

from pylons import request, response, session, tmpl_context as c, url, config, \

    app_globals as g

from pylons.controllers.util import abort, redirect

from pylons_app.lib.base import BaseController, render

from pylons_app.lib.utils import get_repo_slug

from pylons_app.model.hg_model import HgModel

    def __before__(self):

        c.repos_prefix = config['repos_name']

        c.repo_name = get_repo_slug(request)

        hg_model = HgModel()

        if request.POST.get('size'):

            c.size = int(request.params.get('size', 20))

        else:

            c.size = int(request.params.get('size', 20))

        c.jsdata, c.canvasheight = self.graph(hg_model.get_repo(c.repo_name), c.size)

        return render('/graph.html')

    def graph(self, repo, size):

        from mercurial.graphmod import revisions as graph_rev, colored, CHANGESET

        from pylons_app.lib.filters import age as _age, person

        from simplejson import dumps

        from mercurial.node import short

        from webhelpers.paginate import Page

        revcount = size

        p = int(request.params.get('page', 1))

        c.pagination = Page(repo.revisions, page=p, item_count=len(repo.revisions), items_per_page=revcount)

        max_rev = repo.revisions[-1]

        offset = 1 if p == 1 else  ((p - 1) * revcount)

        rev_start = repo.revisions[(-1 * offset)]

        bg_height = 39

        revcount = min(max_rev, revcount)

        rev_end = max(0, rev_start - revcount)

        print rev_start, rev_end

        print 'x' * 100

        dag = graph_rev(repo.repo, rev_start, rev_end)

        tree = list(colored(dag))

        canvasheight = (len(tree) + 1) * bg_height - 27

        data = []

        for (id, type, ctx, vtx, edges) in tree:

            if type != CHANGESET:

                continue

            node = short(ctx.node())

            age = _age(ctx.date())

            desc = ctx.description()

            user = person(ctx.user())

            branch = ctx.branch()

            branch = branch, repo.repo.branchtags().get(branch) == ctx.node()

            data.append((node, vtx, edges, desc, user, age, branch, ctx.tags()))

        return dumps(data), canvasheight

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// 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) {

		var backgrounds = '';

		var nodedata = '';

		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 || start > this.columns) {

					this.columns += 1;

				}

				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;

			var add = this.vertex(x, y, color, parity, cur);

			backgrounds += add[0];

			nodedata += add[1];

			if (fold) this.columns -= 1;

		}

		document.getElementById('nodebgs').innerHTML += backgrounds;

		document.getElementById('graphnodes').innerHTML += nodedata;

	}

}

<%inherit file="base/base.html"/>

<%def name="title()">

    ${_('Repository managment')}

</%def>

<%def name="breadcrumbs()">

    ${h.link_to(u'Home',h.url('/'))}

    / 

    ${h.link_to(c.repo_name,h.url('graph_home',repo_name=c.repo_name))}

    /

    ${_('graph')}

</%def>

<%def name="page_nav()">

        <form action="log">

            <dl class="search">

                <dt><label>Search: </label></dt>

                <dd><input type="text" name="rev" /></dd>

            </dl>

        </form>

		${self.menu('graph')}     

</%def>

<%def name="main()">

    <h2 class="no-link no-border">${_('Graph')} - ${_('showing ')} ${c.size} ${_('revisions')}</h2>

	<noscript>${_('The revision graph only works with JavaScript-enabled browsers.')}</noscript>

<div>

${h.form(h.url.current(),method='get')}

	${_('Show')}: ${h.text('size',size=10,value=c.size)} ${_('revisions')}

	${h.submit('','set')}

${h.end_form()}

</div>

<div id="wrapper">

<ul id="nodebgs"></ul>

<canvas id="graph" width="224" height="${c.canvasheight}"></canvas>

<ul id="graphnodes"></ul>

</div>

<script type="text/javascript" src="/js/graph.js"></script>

<script>

<!-- hide script content

var data = ${c.jsdata|n};

var graph = new Graph();

graph.scale(39);

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 revlink = '<li style="_STYLE"><span class="desc">';

revlink += '<a class="list" href="/${c.repo_name}/changeset/_NODEID" title="_NODEID"><b>_DESC</b></a>';

revlink += '</span> _TAGS';

revlink += '<span class="info">_DATE, 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>';

	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]);

	var tagspan = '';

	if (cur[7].length || (cur[6][0] != 'default' || cur[6][1])) {

		tagspan = '<span class="logtags">';

		if (cur[6][1]) {

			tagspan += '<span class="branchtag" title="' + cur[6][0] + '">';

			tagspan += cur[6][0] + '</span> ';

		} else if (!cur[6][1] && cur[6][0] != 'default') {

			tagspan += '<span class="inbranchtag" title="' + cur[6][0] + '">';

			tagspan += cur[6][0] + '</span> ';

		}

		if (cur[7].length) {

			for (var t in cur[7]) {

				var tag = cur[7][t];

				tagspan += '<span class="tagtag">' + tag + '</span> ';

			}

		}

		tagspan += '</span>';

	}

	item = item.replace(/_TAGS/, tagspan);

	return [bg, item];

}

graph.render(data);

// stop hiding script -->

</script>

<div>

	<h2>${c.pagination.pager('$link_previous ~2~ $link_next')}</h2>

</div>	

</%def>