Index: third_party/flot/jquery.flot.threshold.js |
diff --git a/third_party/flot/jquery.flot.threshold.js b/third_party/flot/jquery.flot.threshold.js |
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+/* Flot plugin for thresholding data. |
+ |
+Copyright (c) 2007-2014 IOLA and Ole Laursen. |
+Licensed under the MIT license. |
+ |
+The plugin supports these options: |
+ |
+ series: { |
+ threshold: { |
+ below: number |
+ color: colorspec |
+ } |
+ } |
+ |
+It can also be applied to a single series, like this: |
+ |
+ $.plot( $("#placeholder"), [{ |
+ data: [ ... ], |
+ threshold: { ... } |
+ }]) |
+ |
+An array can be passed for multiple thresholding, like this: |
+ |
+ threshold: [{ |
+ below: number1 |
+ color: color1 |
+ },{ |
+ below: number2 |
+ color: color2 |
+ }] |
+ |
+These multiple threshold objects can be passed in any order since they are |
+sorted by the processing function. |
+ |
+The data points below "below" are drawn with the specified color. This makes |
+it easy to mark points below 0, e.g. for budget data. |
+ |
+Internally, the plugin works by splitting the data into two series, above and |
+below the threshold. The extra series below the threshold will have its label |
+cleared and the special "originSeries" attribute set to the original series. |
+You may need to check for this in hover events. |
+ |
+*/ |
+ |
+(function ($) { |
+ var options = { |
+ series: { threshold: null } // or { below: number, color: color spec} |
+ }; |
+ |
+ function init(plot) { |
+ function thresholdData(plot, s, datapoints, below, color) { |
+ var ps = datapoints.pointsize, i, x, y, p, prevp, |
+ thresholded = $.extend({}, s); // note: shallow copy |
+ |
+ thresholded.datapoints = { points: [], pointsize: ps, format: datapoints.format }; |
+ thresholded.label = null; |
+ thresholded.color = color; |
+ thresholded.threshold = null; |
+ thresholded.originSeries = s; |
+ thresholded.data = []; |
+ |
+ var origpoints = datapoints.points, |
+ addCrossingPoints = s.lines.show; |
+ |
+ var threspoints = []; |
+ var newpoints = []; |
+ var m; |
+ |
+ for (i = 0; i < origpoints.length; i += ps) { |
+ x = origpoints[i]; |
+ y = origpoints[i + 1]; |
+ |
+ prevp = p; |
+ if (y < below) |
+ p = threspoints; |
+ else |
+ p = newpoints; |
+ |
+ if (addCrossingPoints && prevp != p && x != null |
+ && i > 0 && origpoints[i - ps] != null) { |
+ var interx = x + (below - y) * (x - origpoints[i - ps]) / (y - origpoints[i - ps + 1]); |
+ prevp.push(interx); |
+ prevp.push(below); |
+ for (m = 2; m < ps; ++m) |
+ prevp.push(origpoints[i + m]); |
+ |
+ p.push(null); // start new segment |
+ p.push(null); |
+ for (m = 2; m < ps; ++m) |
+ p.push(origpoints[i + m]); |
+ p.push(interx); |
+ p.push(below); |
+ for (m = 2; m < ps; ++m) |
+ p.push(origpoints[i + m]); |
+ } |
+ |
+ p.push(x); |
+ p.push(y); |
+ for (m = 2; m < ps; ++m) |
+ p.push(origpoints[i + m]); |
+ } |
+ |
+ datapoints.points = newpoints; |
+ thresholded.datapoints.points = threspoints; |
+ |
+ if (thresholded.datapoints.points.length > 0) { |
+ var origIndex = $.inArray(s, plot.getData()); |
+ // Insert newly-generated series right after original one (to prevent it from becoming top-most) |
+ plot.getData().splice(origIndex + 1, 0, thresholded); |
+ } |
+ |
+ // FIXME: there are probably some edge cases left in bars |
+ } |
+ |
+ function processThresholds(plot, s, datapoints) { |
+ if (!s.threshold) |
+ return; |
+ |
+ if (s.threshold instanceof Array) { |
+ s.threshold.sort(function(a, b) { |
+ return a.below - b.below; |
+ }); |
+ |
+ $(s.threshold).each(function(i, th) { |
+ thresholdData(plot, s, datapoints, th.below, th.color); |
+ }); |
+ } |
+ else { |
+ thresholdData(plot, s, datapoints, s.threshold.below, s.threshold.color); |
+ } |
+ } |
+ |
+ plot.hooks.processDatapoints.push(processThresholds); |
+ } |
+ |
+ $.plot.plugins.push({ |
+ init: init, |
+ options: options, |
+ name: 'threshold', |
+ version: '1.2' |
+ }); |
+})(jQuery); |