Redmine/public/javascripts/revision_graph.js

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JavaScript
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var revisionGraph = null;
function drawRevisionGraph(holder, commits_hash, graph_space) {
var XSTEP = 20,
CIRCLE_INROW_OFFSET = 10;
var commits_by_scmid = commits_hash,
commits = $.map(commits_by_scmid, function(val,i){return val;});
var max_rdmid = commits.length - 1;
var commit_table_rows = $('table.changesets tr.changeset');
// create graph
if(revisionGraph != null)
revisionGraph.clear();
else
revisionGraph = Raphael(holder);
var top = revisionGraph.set();
// init dimensions
var graph_x_offset = commit_table_rows.first().find('td').first().position().left - $(holder).position().left,
graph_y_offset = $(holder).position().top,
graph_right_side = graph_x_offset + (graph_space + 1) * XSTEP,
graph_bottom = commit_table_rows.last().position().top + commit_table_rows.last().height() - graph_y_offset;
revisionGraph.setSize(graph_right_side, graph_bottom);
// init colors
var colors = [];
Raphael.getColor.reset();
for (var k = 0; k <= graph_space; k++) {
colors.push(Raphael.getColor());
}
var parent_commit;
var x, y, parent_x, parent_y;
var path, title;
var revision_dot_overlay;
$.each(commits, function(index, commit) {
y = commit_table_rows.eq(max_rdmid - commit.rdmid).position().top - graph_y_offset + CIRCLE_INROW_OFFSET;
x = graph_x_offset + XSTEP / 2 + XSTEP * commit.space;
revisionGraph.circle(x, y, 3)
.attr({
fill: colors[commit.space],
stroke: 'none',
}).toFront();
// paths to parents
$.each(commit.parent_scmids, function(index, parent_scmid) {
parent_commit = commits_by_scmid[parent_scmid];
if (parent_commit) {
parent_y = commit_table_rows.eq(max_rdmid - parent_commit.rdmid).position().top - graph_y_offset + CIRCLE_INROW_OFFSET;
parent_x = graph_x_offset + XSTEP / 2 + XSTEP * parent_commit.space;
if (parent_commit.space == commit.space) {
// vertical path
path = revisionGraph.path([
'M', x, y,
'V', parent_y]);
} else {
// path to a commit in a different branch (Bezier curve)
path = revisionGraph.path([
'M', x, y,
'C', x, y, x, y + (parent_y - y) / 2, x + (parent_x - x) / 2, y + (parent_y - y) / 2,
'C', x + (parent_x - x) / 2, y + (parent_y - y) / 2, parent_x, parent_y-(parent_y-y)/2, parent_x, parent_y]);
}
} else {
// vertical path ending at the bottom of the revisionGraph
path = revisionGraph.path([
'M', x, y,
'V', graph_bottom]);
}
path.attr({stroke: colors[commit.space], "stroke-width": 1.5}).toBack();
});
revision_dot_overlay = revisionGraph.circle(x, y, 10);
revision_dot_overlay
.attr({
fill: '#000',
opacity: 0,
cursor: 'pointer',
href: commit.href
});
if(commit.refs != null && commit.refs.length > 0) {
title = document.createElementNS(revisionGraph.canvas.namespaceURI, 'title');
title.appendChild(document.createTextNode(commit.refs));
revision_dot_overlay.node.appendChild(title);
}
top.push(revision_dot_overlay);
});
top.toFront();
};