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jquery.commits-graph.js
304 lines | 8.8 KiB | application/javascript | JavascriptLexer
/ rhodecode / public / js / jquery.commits-graph.js
/*
* jQuery Commits Graph - v0.1.4
* A jQuery plugin to display git commits graph using HTML5/Canvas.
* https://github.com/tclh123/commits-graph
*
* Copyright (c) 2014
* MIT License
*
* Adapted to fit RhodeCode Enterprise changelog graph needs
*/
// -- Route --------------------------------------------------------
function Route( commit, data, options ) {
var self = this;
self._data = data;
self.commit = commit;
self.options = options;
self.from = data[0];
self.to = data[1];
self.branch = data[2];
}
Route.prototype.drawRoute = function ( ctx ) {
var self = this;
if (self.options.orientation === "horizontal") {
var from_x_hori = self.options.width * self.options.scaleFactor - (self.commit.idx + 0.5) * self.options.x_step * self.options.scaleFactor;
var from_y_hori = (self.from + 1) * self.options.y_step * self.options.scaleFactor;
var to_x_hori = self.options.width * self.options.scaleFactor - (self.commit.idx + 0.5 + 1) * self.options.x_step * self.options.scaleFactor;
var to_y_hori = (self.to + 1) * self.options.y_step * self.options.scaleFactor;
ctx.strokeStyle = self.commit.graph.get_color(self.branch);
ctx.beginPath();
ctx.moveTo(from_x_hori, from_y_hori);
if (from_y_hori === to_y_hori) {
ctx.lineTo(to_x_hori, to_y_hori);
} else if (from_y_hori > to_y_hori) {
ctx.bezierCurveTo(from_x_hori - self.options.x_step * self.options.scaleFactor / 3 * 2,
from_y_hori + self.options.y_step * self.options.scaleFactor / 4,
to_x_hori + self.options.x_step * self.options.scaleFactor / 3 * 2,
to_y_hori - self.options.y_step * self.options.scaleFactor / 4,
to_x_hori, to_y_hori);
} else if (from_y_hori < to_y_hori) {
ctx.bezierCurveTo(from_x_hori - self.options.x_step * self.options.scaleFactor / 3 * 2,
from_y_hori - self.options.y_step * self.options.scaleFactor / 4,
to_x_hori + self.options.x_step * self.options.scaleFactor / 3 * 2,
to_y_hori + self.options.y_step * self.options.scaleFactor / 4,
to_x_hori, to_y_hori);
}
} else {
var from_x = self.options.width * self.options.scaleFactor - (self.from + 1) * self.options.x_step * self.options.scaleFactor;
var row = $("#chg_"+(self.commit.idx+1))
if (row.length) {
var from_y = (row.offset().top + row.height() / 2 - self.options.relaOffset) * self.options.scaleFactor;
}
var to_x = self.options.width * self.options.scaleFactor - (self.to + 1) * self.options.x_step * self.options.scaleFactor;
var next_row = $("#chg_"+(self.commit.idx+2))
if (next_row.length) {
var to_y = ((next_row.offset().top + next_row.height() / 2 - self.options.relaOffset) + 0.2) * self.options.scaleFactor;
}
ctx.strokeStyle = self.commit.graph.get_color(self.branch);
ctx.beginPath();
ctx.moveTo(from_x, from_y);
if (from_x === to_x) {
ctx.lineTo(to_x, to_y);
} else {
ctx.bezierCurveTo(from_x - self.options.x_step * self.options.scaleFactor / 4,
from_y + self.options.y_step * self.options.scaleFactor / 3 * 2,
to_x + self.options.x_step * self.options.scaleFactor / 4,
to_y - self.options.y_step * self.options.scaleFactor / 3 * 2,
to_x, to_y);
}
}
ctx.stroke();
};
// -- Commit Node --------------------------------------------------------
function Commit(graph, idx, data, options ) {
var self = this;
self._data = data;
self.graph = graph;
self.idx = idx;
self.options = options;
self.sha = data[0];
self.dot = data[1];
self.dot_offset = self.dot[0];
self.dot_branch = self.dot[1];
self.routes = $.map(data[2], function(e) { return new Route(self, e, options); });
}
Commit.prototype.drawDot = function ( ctx ) {
var self = this;
var radius = self.options.dotRadius; // dot radius
if (self.options.orientation === "horizontal") {
var x_hori = self.options.width * self.options.scaleFactor - (self.idx + 0.5) * self.options.x_step * self.options.scaleFactor;
var y_hori = (self.dot_offset + 1) * self.options.y_step * self.options.scaleFactor;
ctx.fillStyle = self.graph.get_color(self.dot_branch);
ctx.beginPath();
ctx.arc(x_hori, y_hori, radius * self.options.scaleFactor, 0, 2 * Math.PI, true);
} else {
var x = self.options.width * self.options.scaleFactor - (self.dot_offset + 1) * self.options.x_step * self.options.scaleFactor;
var row = $("#chg_"+(self.idx+1))
var y = (row.offset().top + row.height() / 2 - self.options.relaOffset) * self.options.scaleFactor;
ctx.fillStyle = self.graph.get_color(self.dot_branch);
ctx.beginPath();
ctx.arc(x, y, radius * self.options.scaleFactor, 0, 2 * Math.PI, true);
}
// ctx.stroke();
ctx.fill();
};
// -- Graph Canvas --------------------------------------------------------
function backingScale() {
if ('devicePixelRatio' in window) {
if (window.devicePixelRatio > 1) {
return window.devicePixelRatio;
}
}
return 1;
}
function GraphCanvas( data, options ) {
var self = this;
self.data = data;
self.options = options;
self.canvas = document.createElement("canvas");
self.canvas.style.height = options.height + "px";
self.canvas.style.width = options.width + "px";
self.canvas.height = options.height;
self.canvas.width = options.width;
var scaleFactor = backingScale();
if (self.options.orientation === "horizontal") {
if (scaleFactor < 1) {
self.canvas.width = self.canvas.width * scaleFactor;
self.canvas.height = self.canvas.height * scaleFactor;
}
} else {
if (scaleFactor > 1) {
self.canvas.width = self.canvas.width * scaleFactor;
self.canvas.height = self.canvas.height * scaleFactor;
}
}
self.options.scaleFactor = scaleFactor;
// or use context.scale(2,2) // not tested
self.colors = [
"#e11d21",
//"#eb6420",
"#fbca04",
"#009800",
"#006b75",
"#207de5",
"#0052cc",
"#5319e7",
"#f7c6c7",
"#fad8c7",
"#fef2c0",
"#bfe5bf",
"#c7def8",
"#bfdadc",
"#bfd4f2",
"#d4c5f9",
"#cccccc",
"#84b6eb",
"#e6e6e6",
"#ffffff",
"#cc317c"
];
// self.branch_color = {};
}
GraphCanvas.prototype.toHTML = function () {
var self = this;
self.draw();
return $(self.canvas);
};
GraphCanvas.prototype.get_color = function (branch) {
var self = this;
var n = self.colors.length;
return self.colors[branch % n];
};
/*
[
sha,
[offset, branch], //dot
[
[from, to, branch], // route1
[from, to, branch], // route2
[from, to, branch],
] // routes
],
*/
// draw
GraphCanvas.prototype.draw = function () {
var self = this,
ctx = self.canvas.getContext("2d");
ctx.lineWidth = self.options.lineWidth;
self.options.relaOffset = $("#chg_1").offset().top;
var n_commits = self.data.length;
for (var i=0; i<n_commits; i++) {
var commit = new Commit(self, i, self.data[i], self.options);
for (var j=0; j<commit.routes.length; j++) {
var route = commit.routes[j];
route.drawRoute(ctx);
}
commit.drawDot(ctx);
}
};
// -- Function for finding the total number of branches -----------------------
branchCount = function(data) {
var maxBranch = -1;
for (var i = 0; i < data.length; i++) {
for (var j = 0; j < data[i][2].length; j++) {
if (maxBranch < data[i][2][j][0] || maxBranch < data[i][2][j][1]) {
maxBranch = Math.max.apply(Math, [data[i][2][j][0], data[i][2][j][1]]);
}
}
}
return maxBranch + 1;
};
// -- Graph Plugin ------------------------------------------------------------
function Graph( element, options ) {
var self = this,
defaults = {
height: 800,
width: 200,
// y_step: 30,
y_step: 20,
x_step: 20,
orientation: "vertical",
dotRadius: 3,
lineWidth: 2,
};
self.element = element;
self.$container = $( element );
self.data = self.$container.data( "graph" );
var x_step = $.extend( {}, defaults, options ).x_step;
var y_step = $.extend( {}, defaults, options ).y_step;
if (options.orientation === "horizontal") {
defaults.width = ( self.data.length + 2 ) * x_step;
defaults.height = ( branchCount(self.data) + 0.5 ) * y_step;
} else {
defaults.width = ( branchCount(self.data) + 0.5 ) * x_step;
defaults.height = ( self.data.length + 2 ) * y_step;
}
self.options = $.extend( {}, defaults, options ) ;
self._defaults = defaults;
self.applyTemplate();
}
// Apply results to HTML template
Graph.prototype.applyTemplate = function () {
var self = this,
graphCanvas = new GraphCanvas( self.data, self.options ),
$canvas = graphCanvas.toHTML();
$canvas.appendTo( self.$container );
};
// -- Attach plugin to jQuery's prototype --------------------------------------
;( function ( $, window, undefined ) {
$.fn.commits = function ( options ) {
return this.each(function () {
$( this ).data( "plugin_commits_graph", new Graph( this, options ) );
});
};
}( window.jQuery, window ) );