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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."
*
*/
/**
* The following dashed line support contributed by Cory Sharp.
* After I implemented an inferior method, Cory responded with a generous
* contribution of code and input which proved a more powerful and
* elegant solution.
*/
(function($) {
var dotlen = 0.1;
$.jqplot.LinePattern = function (ctx, pattern) {
var defaultLinePatterns = {
dotted: [ dotlen, $.jqplot.config.dotGapLength ],
dashed: [ $.jqplot.config.dashLength, $.jqplot.config.gapLength ],
solid: null
};
if (typeof pattern === 'string') {
if (pattern[0] === '.' || pattern[0] === '-') {
var s = pattern;
pattern = [];
for (var i=0, imax=s.length; i<imax; i++) {
if (s[i] === '.') {
pattern.push( dotlen );
}
else if (s[i] === '-') {
pattern.push( $.jqplot.config.dashLength );
}
else {
continue;
}
pattern.push( $.jqplot.config.gapLength );
}
}
else {
pattern = defaultLinePatterns[pattern];
}
}
if (!(pattern && pattern.length)) {
return ctx;
}
var patternIndex = 0;
var patternDistance = pattern[0];
var px = 0;
var py = 0;
var pathx0 = 0;
var pathy0 = 0;
var moveTo = function (x, y) {
ctx.moveTo( x, y );
px = x;
py = y;
pathx0 = x;
pathy0 = y;
};
var lineTo = function (x, y) {
var scale = ctx.lineWidth;
var dx = x - px;
var dy = y - py;
var dist = Math.sqrt(dx*dx+dy*dy);
if ((dist > 0) && (scale > 0)) {
dx /= dist;
dy /= dist;
while (true) {
var dp = scale * patternDistance;
if (dp < dist) {
px += dp * dx;
py += dp * dy;
if ((patternIndex & 1) == 0) {
ctx.lineTo( px, py );
}
else {
ctx.moveTo( px, py );
}
dist -= dp;
patternIndex++;
if (patternIndex >= pattern.length) {
patternIndex = 0;
}
patternDistance = pattern[patternIndex];
}
else {
px = x;
py = y;
if ((patternIndex & 1) == 0) {
ctx.lineTo( px, py );
}
else {
ctx.moveTo( px, py );
}
patternDistance -= dist / scale;
break;
}
}
}
};
var beginPath = function () {
ctx.beginPath();
};
var closePath = function () {
lineTo( pathx0, pathy0 );
};
return {
moveTo: moveTo,
lineTo: lineTo,
beginPath: beginPath,
closePath: closePath
};
};
})(jQuery);
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