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/** * jqPlot * Pure JavaScript plotting plugin using jQuery * * Version: @VERSION * Revision: @REVISION * * Copyright (c) 2009-2013 Chris Leonello * jqPlot is currently available for use in all personal or commercial projects * under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL * version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can * choose the license that best suits your project and use it accordingly. * * Although not required, the author would appreciate an email letting him * know of any substantial use of jqPlot. You can reach the author at: * chris at jqplot dot com or see http://www.jqplot.com/info.php . * * If you are feeling kind and generous, consider supporting the project by * making a donation at: http://www.jqplot.com/donate.php . * * sprintf functions contained in jqplot.sprintf.js by Ash Searle: * * version 2007.04.27 * author Ash Searle * http://hexmen.com/blog/2007/03/printf-sprintf/ * http://hexmen.com/js/sprintf.js * The author (Ash Searle) has placed this code in the public domain: * "This code is unrestricted: you are free to use it however you like." * */ (function($) { // class: $.jqplot.shadowRenderer // The default jqPlot shadow renderer, rendering shadows behind shapes. $.jqplot.ShadowRenderer = function(options){ // Group: Properties // prop: angle // Angle of the shadow in degrees. Measured counter-clockwise from the x axis. this.angle = 45; // prop: offset // Pixel offset at the given shadow angle of each shadow stroke from the last stroke. this.offset = 1; // prop: alpha // alpha transparency of shadow stroke. this.alpha = 0.07; // prop: lineWidth // width of the shadow line stroke. this.lineWidth = 1.5; // prop: lineJoin // How line segments of the shadow are joined. this.lineJoin = 'miter'; // prop: lineCap // how ends of the shadow line are rendered. this.lineCap = 'round'; // prop; closePath // whether line path segment is closed upon itself. this.closePath = false; // prop: fill // whether to fill the shape. this.fill = false; // prop: depth // how many times the shadow is stroked. Each stroke will be offset by offset at angle degrees. this.depth = 3; this.strokeStyle = 'rgba(0,0,0,0.1)'; // prop: isarc // whether the shadow is an arc or not. this.isarc = false; $.extend(true, this, options); }; $.jqplot.ShadowRenderer.prototype.init = function(options) { $.extend(true, this, options); }; // function: draw // draws an transparent black (i.e. gray) shadow. // // ctx - canvas drawing context // points - array of points or [x, y, radius, start angle (rad), end angle (rad)] $.jqplot.ShadowRenderer.prototype.draw = function(ctx, points, options) { ctx.save(); var opts = (options != null) ? options : {}; var fill = (opts.fill != null) ? opts.fill : this.fill; var fillRect = (opts.fillRect != null) ? opts.fillRect : this.fillRect; var closePath = (opts.closePath != null) ? opts.closePath : this.closePath; var offset = (opts.offset != null) ? opts.offset : this.offset; var alpha = (opts.alpha != null) ? opts.alpha : this.alpha; var depth = (opts.depth != null) ? opts.depth : this.depth; var isarc = (opts.isarc != null) ? opts.isarc : this.isarc; var linePattern = (opts.linePattern != null) ? opts.linePattern : this.linePattern; ctx.lineWidth = (opts.lineWidth != null) ? opts.lineWidth : this.lineWidth; ctx.lineJoin = (opts.lineJoin != null) ? opts.lineJoin : this.lineJoin; ctx.lineCap = (opts.lineCap != null) ? opts.lineCap : this.lineCap; ctx.strokeStyle = opts.strokeStyle || this.strokeStyle || 'rgba(0,0,0,'+alpha+')'; ctx.fillStyle = opts.fillStyle || this.fillStyle || 'rgba(0,0,0,'+alpha+')'; for (var j=0; j