| Index: perf/dashboard/ui/js/plotter.js
 | 
| ===================================================================
 | 
| --- perf/dashboard/ui/js/plotter.js	(revision 298504)
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| +++ perf/dashboard/ui/js/plotter.js	(working copy)
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| @@ -1,608 +0,0 @@
 | 
| -/*
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| -  Copyright (c) 2012 The Chromium Authors. All rights reserved.
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| -  Use of this source code is governed by a BSD-style license that can be
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| -  found in the LICENSE file.
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| -*/
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| -
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| -// Collection of classes used to plot data in a <canvas>.  Create a Plotter()
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| -// to generate a plot.
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| -
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| -// Vertical marker for columns.
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| -function Marker(color) {
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| -  var m = document.createElement("DIV");
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| -  m.setAttribute("class", "plot-cursor");
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| -  m.style.backgroundColor = color;
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| -  m.style.opacity = "0.3";
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| -  m.style.position = "absolute";
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| -  m.style.left = "-2px";
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| -  m.style.top = "-2px";
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| -  m.style.width = "0px";
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| -  m.style.height = "0px";
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| -  return m;
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| -}
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| -
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| -/**
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| - * Adds commas to |number|.
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| - *
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| - * Examples:
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| - *  1234.56 => "1,234.56"
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| - *  "99999" => "99,999"
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| - *
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| - * @param number {string|number} The number to format.
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| - * @return {string} String representation of |number| with commas every
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| - *     three places.
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| - */
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| -function addCommas(number) {
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| -  number += '';  // Convert number to string if not already.
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| -  var numberParts = number.split('.');
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| -  var integralPart = numberParts[0];
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| -  var fractionalPart = numberParts.length > 1 ? '.' + numberParts[1] : '';
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| -  var reThreeDigits = /(\d+)(\d{3})/;
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| -  while (reThreeDigits.test(integralPart)) {
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| -    integralPart = integralPart.replace(reThreeDigits, '$1' + ',' + '$2');
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| -  }
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| -  return integralPart + fractionalPart;
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| -}
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| -
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| -/**
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| - * HorizontalMarker class
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| - * Create a horizontal marker at the indicated mouse location.
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| - * @constructor
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| - *
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| - * @param canvasRect {Object} The canvas bounds (in client coords).
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| - * @param clientY {Number} The vertical mouse click location that spawned
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| - *     the marker, in the client coordinate space.
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| - * @param yValue {Number} The plotted value corresponding to the clientY
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| - *     click location.
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| - */
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| -function HorizontalMarker(canvasRect, clientY, yValue) {
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| -  // Add a horizontal line to the graph.
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| -  var m = document.createElement("DIV");
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| -  m.setAttribute("class", "plot-baseline");
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| -  m.style.backgroundColor = HorizontalMarker.COLOR;
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| -  m.style.opacity = "0.3";
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| -  m.style.position = "absolute";
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| -  m.style.left = canvasRect.offsetLeft;
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| -  var h = HorizontalMarker.HEIGHT;
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| -  m.style.top = (clientY - h/2).toFixed(0) + "px";
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| -  m.style.width = canvasRect.offsetWidth + "px";
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| -  m.style.height = h + "px";
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| -  this.markerDiv_ = m;
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| -
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| -  this.value = yValue;
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| -}
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| -
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| -HorizontalMarker.HEIGHT = 5;
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| -HorizontalMarker.COLOR = "rgb(0,100,100)";
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| -
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| -// Remove the horizontal line from the graph.
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| -HorizontalMarker.prototype.remove_ = function() {
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| -  this.markerDiv_.parentNode.removeChild(this.markerDiv_);
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| -};
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| -
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| -
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| -/**
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| - * Plotter class
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| - * @constructor
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| - *
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| - * Draws a chart using CANVAS element. Takes array of lines to draw with
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| - * deviations values for each data sample.
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| - *
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| - * @param {Array} clNumbers list of clNumbers for each data sample.
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| - * @param {Array} plotData list of arrays that represent individual lines.
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| - *                         The line itself is an Array of value and stdd.
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| - * @param {Array} dataDescription list of data description for each line
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| - *                         in plotData.
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| - * @param {string} units name of measurement used to describe plotted data.
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| - *
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| - * Example of the plotData:
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| - *  [
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| - *    [line 1 data],
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| - *    [line 2 data]
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| - *  ].
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| - *  Line data looks like  [[point one], [point two]].
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| - *  And individual points are [value, deviation value]
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| - */
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| -function Plotter(clNumbers, plotData, dataDescription, units, resultNode,
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| -                 width, height) {
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| -  this.clNumbers_ = clNumbers;
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| -  this.plotData_ = plotData;
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| -  this.dataDescription_ = dataDescription;
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| -  this.dataColors_ = [];
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| -  this.dataIndexByName_ = {};
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| -  this.resultNode_ = resultNode;
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| -  this.units_ = units;
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| -  this.selectedTraces_ = [];
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| -  this.imageCache_ = null;
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| -  this.enableMouseScroll = true;
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| -  this.coordinates = new Coordinates(plotData, width, height);
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| -  if (isNaN(width))
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| -    this.width = this.coordinates.widthMax;
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| -  else
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| -    this.width = width;
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| -
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| -  this.plotPane_ = null;
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| -
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| -  // A color palette that's unambigous for normal and color-deficient viewers.
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| -  // Values are (red, green, blue) on a scale of 255.
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| -  // Taken from http://jfly.iam.u-tokyo.ac.jp/html/manuals/pdf/color_blind.pdf
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| -  this.colors = [[0, 114, 178],   // blue
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| -                 [230, 159, 0],   // orange
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| -                 [0, 158, 115],   // green
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| -                 [204, 121, 167], // purplish pink
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| -                 [86, 180, 233],  // sky blue
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| -                 [213, 94, 0],    // dark orange
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| -                 [0, 0, 0],       // black
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| -                 [240, 228, 66]   // yellow
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| -                ];
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| -
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| -  var categoryColors = {};
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| -  var colorIndex = 0;
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| -  for (var i = 0; i < this.dataDescription_.length; i++) {
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| -    this.dataIndexByName_[this.dataDescription_[i]] = i;
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| -    var category = this.dataDescription_[i].replace(/-.*/, "");
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| -    if (this.dataDescription_[i].indexOf("ref") == -1) {
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| -      category += "-ref";
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| -    }
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| -    if (!categoryColors[category]) {
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| -      categoryColors[category] = this.makeColor(colorIndex++);
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| -    }
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| -    this.dataColors_[i] = categoryColors[category];
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| -  }
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| -}
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| -
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| -/**
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| - * Does the actual plotting.
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| - */
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| -Plotter.prototype.plot = function() {
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| -  this.canvas_elt_ = this.canvas();
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| -  this.coordinates_div_ = this.coordinates_();
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| -  this.ruler_div_ = this.ruler();
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| -  // marker for the result-point that the mouse is currently over
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| -  this.cursor_div_ = new Marker("rgb(100,80,240)");
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| -  // marker for the result-point for which details are shown
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| -  this.marker_div_ = new Marker("rgb(100,100,100)");
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| -
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| -  this.plotPane_ = document.createElement('div');
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| -  this.plotPane_.setAttribute('class', 'plot');
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| -  this.plotPane_.setAttribute('style', 'position: relative');
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| -  this.resultNode_.appendChild(this.plotPane_);
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| -  this.plotPane_.appendChild(this.canvas_elt_);
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| -  this.plotPane_.appendChild(this.ruler_div_);
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| -  this.plotPane_.appendChild(this.cursor_div_);
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| -  this.plotPane_.appendChild(this.marker_div_);
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| -
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| -  this.resultNode_.appendChild(this.coordinates_div_);
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| -  this.attachEventListeners(this.canvas_elt_);
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| -
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| -  this.redraw();
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| -
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| -  this.graduation_divs_ = this.graduations();
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| -  for (var i = 0; i < this.graduation_divs_.length; i++)
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| -    this.plotPane_.appendChild(this.graduation_divs_[i]);
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| -};
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| -
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| -/**
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| - * Redraws the canvas with selected traces highlighted.
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| - */
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| -Plotter.prototype.redraw = function() {
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| -  var ctx = this.canvas_elt_.getContext("2d");
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| -  var doDrawImage = this.selectedTraces_.length || this.imageCache_;
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| -  // Drawing all lines can take a few seconds on large graphs, so use a cache.
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| -  // After the initial render, the cache draws quickly on Firefox and Chrome.
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| -  if (!this.imageCache_) {
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| -    // Clear it with white: otherwise canvas will draw on top of existing data.
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| -    ctx.clearRect(0, 0, this.canvas_elt_.width, this.canvas_elt_.height);
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| -    // Draw all data lines.
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| -    for (var i = 0; i < this.plotData_.length; i++)
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| -      this.plotLine_(ctx, this.getDataColor(i), this.plotData_[i]);
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| -    // Here we convert the canvas to an image by making a new Image with
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| -    // src set to the canvas's Data URL.
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| -    var imageDataURL = this.canvas_elt_.toDataURL();
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| -    this.imageCache_ = new Image;
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| -    this.imageCache_.src = imageDataURL;
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| -  }
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| -  if (doDrawImage) {
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| -    // Clear it again so we don't draw on top of the old line.
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| -    ctx.clearRect(0, 0, this.canvas_elt_.width, this.canvas_elt_.height);
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| -    // If we have selections, dim the other traces by first setting low alpha.
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| -    if (this.selectedTraces_.length)
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| -      ctx.globalAlpha = 0.2;
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| -    // Draw the cached image.
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| -    ctx.drawImage(this.imageCache_, 0, 0);
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| -    // Restore the alpha so we can draw selected lines in full opacity.
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| -    ctx.globalAlpha = 1;
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| -  }
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| -  // Now draw all selected traces in order of selection.
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| -  for (var i = 0; i < this.selectedTraces_.length; i++) {
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| -    var index = this.selectedTraces_[i];
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| -    this.plotLine_(ctx, this.getDataColor(index), this.plotData_[index]);
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| -  }
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| -};
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| -
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| -/**
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| - * Sets the selected state of a given trace.
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| - * @param {number} trace_index
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| - * @return {boolean} true if the trace has been selected, false if deselected.
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| - */
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| -Plotter.prototype.toggleSelection = function(trace_index) {
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| -  var i = this.selectedTraces_.indexOf(trace_index);
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| -  var ret = (i == -1);
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| -  if (ret)
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| -    this.selectedTraces_.push(trace_index);
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| -  else
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| -    this.selectedTraces_.splice(i, 1);
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| -  this.redraw();
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| -  return ret;
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| -};
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| -
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| -Plotter.prototype.drawDeviationBar_ = function(context, strokeStyles, x,
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| -                                               y_errLow, y_errHigh) {
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| -  context.strokeStyle = strokeStyles;
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| -  context.lineWidth = 1.0;
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| -  context.beginPath();
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| -  context.moveTo(x, y_errHigh);
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| -  context.lineTo(x, y_errLow);
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| -  context.closePath();
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| -  context.stroke();
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| -};
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| -
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| -Plotter.prototype.plotLine_ = function(ctx, strokeStyles, data) {
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| -  ctx.strokeStyle = strokeStyles;
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| -  ctx.lineWidth = 2.0;
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| -  ctx.beginPath();
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| -  var initial = true;
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| -  var deviationData = [];
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| -  for (var i = 0; i < data.length; i++) {
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| -    var x = this.coordinates.xPoints(i);
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| -    var value = parseFloat(data[i][0]);
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| -    var stdd = parseFloat(data[i][1]);
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| -    var y = 0.0;
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| -    var y_errLow = 0.0;
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| -    var y_errHigh = 0.0;
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| -    if (isNaN(value)) {
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| -      // Re-set 'initial' if we're at a gap in the data.
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| -      initial = true;
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| -    } else {
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| -      y = this.coordinates.yPoints(value);
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| -      // We assume that the stdd will only be NaN (missing) when the value is.
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| -      if (value != 0.0) {
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| -        y_errLow = this.coordinates.yPoints(value - stdd);
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| -        y_errHigh = this.coordinates.yPoints(value + stdd);
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| -      }
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| -      if (initial)
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| -        initial = false;
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| -      else
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| -        ctx.lineTo(x, y);
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| -    }
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| -
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| -    ctx.moveTo(x, y);
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| -    deviationData.push([x, y_errLow, y_errHigh]);
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| -  }
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| -  ctx.closePath();
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| -  ctx.stroke();
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| -
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| -  for (var i = 0; i < deviationData.length; i++) {
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| -    this.drawDeviationBar_(ctx, strokeStyles, deviationData[i][0],
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| -                            deviationData[i][1], deviationData[i][2]);
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| -  }
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| -};
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| -
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| -Plotter.prototype.attachEventListeners = function(canvas) {
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| -  var self = this;
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| -  if (this.enableMouseScroll) {
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| -    canvas.parentNode.addEventListener(
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| -      "mousewheel", function(evt) { self.onMouseScroll_(evt); }, false);
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| -    canvas.parentNode.addEventListener(
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| -      "DOMMouseScroll", function(evt) { self.onMouseScroll_(evt); }, false);
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| -  }
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| -  canvas.parentNode.addEventListener(
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| -    "mousemove", function(evt) { self.onMouseMove_(evt); }, false);
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| -  this.cursor_div_.addEventListener(
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| -    "click", function(evt) { self.onMouseClick_(evt); }, false);
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| -};
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| -
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| -Plotter.prototype.onMouseScroll_ = function(evt) {
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| -  // Chrome uses wheelDelta and Mozilla uses detail with opposite sign values.
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| -  var zoom = evt.wheelDelta ? evt.wheelDelta : -evt.detail;
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| -  zoom = zoom < 0 ? -1 : 1;
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| -  // Zoom less if the shift key is held.
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| -  if (evt.shiftKey)
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| -    zoom /= 10;
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| -
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| -  var obj = this.canvas_elt_;
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| -  var offsetTop = 0;
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| -  do {
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| -    offsetTop += obj.offsetTop;
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| -  } while (obj = obj.offsetParent);
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| -  var positionY = evt.clientY + document.body.scrollTop - offsetTop;
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| -  var yValue = this.coordinates.yValue(positionY);
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| -  var yTopToMouse = this.coordinates.yMaxValue - (this.coordinates.yMaxValue +
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| -      yValue) / 2;
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| -  var yBottomToMouse = (yValue + this.coordinates.yMinValue) / 2 -
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| -      this.coordinates.yMinValue;
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| -
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| -  this.coordinates.yMinValue += yBottomToMouse * zoom;
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| -  this.coordinates.yMaxValue -= yTopToMouse * zoom;
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| -  this.imageCache_ = null;
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| -  if(this.horizontal_marker_) {
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| -    this.horizontal_marker_.remove_();
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| -    this.horizontal_marker_ = null;
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| -  }
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| -  for (var i = 0; i < this.graduation_divs_.length; i++)
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| -    this.plotPane_.removeChild(this.graduation_divs_[i]);
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| -  this.graduation_divs_ = this.graduations();
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| -  for (var i = 0; i < this.graduation_divs_.length; i++)
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| -    this.plotPane_.appendChild(this.graduation_divs_[i]);
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| -  this.redraw();
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| -};
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| -
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| -Plotter.prototype.updateRuler_ = function(evt) {
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| -  var r = this.ruler_div_;
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| -  var obj = this.canvas_elt_;
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| -  var offsetTop = 0;
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| -  do {
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| -    offsetTop += obj.offsetTop;
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| -  } while (obj = obj.offsetParent);
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| -  r.style.left = this.canvas_elt_.offsetLeft + "px";
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| -  r.style.top = this.canvas_elt_.offsetTop + "px";
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| -  r.style.width = this.canvas_elt_.offsetWidth + "px";
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| -  var h = evt.clientY + document.body.scrollTop - offsetTop;
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| -  if (h > this.canvas_elt_.offsetHeight)
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| -    h = this.canvas_elt_.offsetHeight;
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| -  r.style.height = h + "px";
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| -};
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| -
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| -Plotter.prototype.updateCursor_ = function() {
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| -  var c = this.cursor_div_;
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| -  c.style.top = this.canvas_elt_.offsetTop + "px";
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| -  c.style.height = this.canvas_elt_.offsetHeight + "px";
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| -  var w = this.canvas_elt_.offsetWidth / this.clNumbers_.length;
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| -  var x = (this.canvas_elt_.offsetLeft + w * this.current_index_).toFixed(0);
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| -  c.style.left = x + "px";
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| -  c.style.width = w + "px";
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| -};
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| -
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| -Plotter.prototype.chromiumCLNumber_ = function(index) {
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| -  // CL number entries are either revisions or objects of the form
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| -  // {chromium: revision, webkit: revision}
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| -  return this.clNumbers_[index].chromium || this.clNumbers_[index];
 | 
| -};
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| -
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| -Plotter.prototype.onMouseMove_ = function(evt) {
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| -  var obj = this.canvas_elt_;
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| -  var offsetTop = 0;
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| -  var offsetLeft = 0;
 | 
| -  do {
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| -    offsetTop += obj.offsetTop;
 | 
| -    offsetLeft += obj.offsetLeft;
 | 
| -  } while (obj = obj.offsetParent);
 | 
| -
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| -  var canvas = evt.currentTarget.firstChild;
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| -  var positionX = evt.clientX + document.body.scrollLeft - offsetLeft;
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| -  var positionY = evt.clientY + document.body.scrollTop - offsetTop;
 | 
| -
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| -  this.current_index_ = this.coordinates.dataSampleIndex(positionX);
 | 
| -  var yValue = this.coordinates.yValue(positionY);
 | 
| -
 | 
| -  var html = "";
 | 
| -  if (!isNaN(this.chromiumCLNumber_(0)))
 | 
| -    html = "r";
 | 
| -  html += this.chromiumCLNumber_(this.current_index_);
 | 
| -  var webkitCLNumber = this.clNumbers_[this.current_index_].webkit;
 | 
| -  if (webkitCLNumber) {
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| -    html += ", webkit ";
 | 
| -    if (!isNaN(webkitCLNumber))
 | 
| -      html += "r";
 | 
| -    html += webkitCLNumber;
 | 
| -  }
 | 
| -
 | 
| -  html += ": " +
 | 
| -    addCommas(this.plotData_[0][this.current_index_][0].toFixed(2)) +
 | 
| -    " " + this.units_ + " +/- " +
 | 
| -    addCommas(this.plotData_[0][this.current_index_][1].toFixed(2)) +
 | 
| -    " " + addCommas(yValue.toFixed(2)) + " " + this.units_;
 | 
| -
 | 
| -  this.coordinates_td_.innerHTML = html;
 | 
| -
 | 
| -  // If there is a horizontal marker, also display deltas relative to it.
 | 
| -  if (this.horizontal_marker_) {
 | 
| -    var baseline = this.horizontal_marker_.value;
 | 
| -    var delta = yValue - baseline;
 | 
| -    var fraction = delta / baseline; // allow division by 0
 | 
| -
 | 
| -    var deltaStr = (delta >= 0 ? "+" : "") + delta.toFixed(0) + " " +
 | 
| -        this.units_;
 | 
| -    var percentStr = (fraction >= 0 ? "+" : "") +
 | 
| -        (fraction * 100).toFixed(3) + "%";
 | 
| -
 | 
| -    this.baseline_deltas_td_.innerHTML = deltaStr + ": " + percentStr;
 | 
| -  }
 | 
| -
 | 
| -  this.updateRuler_(evt);
 | 
| -  this.updateCursor_();
 | 
| -};
 | 
| -
 | 
| -Plotter.incrementNumericCLNumber = function(value) {
 | 
| -  if (isNaN(value))
 | 
| -    return value;
 | 
| -  return value + 1;
 | 
| -};
 | 
| -
 | 
| -Plotter.prototype.onMouseClick_ = function(evt) {
 | 
| -  // Shift-click controls the horizontal reference line.
 | 
| -  if (evt.shiftKey) {
 | 
| -    if (this.horizontal_marker_) {
 | 
| -      this.horizontal_marker_.remove_();
 | 
| -    }
 | 
| -    var obj = this.canvas_elt_;
 | 
| -    var offsetTop = 0;
 | 
| -    do {
 | 
| -      offsetTop += obj.offsetTop;
 | 
| -    } while (obj = obj.offsetParent);
 | 
| -    var canvasY = evt.clientY + document.body.scrollTop - offsetTop;
 | 
| -    this.horizontal_marker_ = new HorizontalMarker(
 | 
| -        this.canvas_elt_, evt.clientY + document.body.scrollTop - offsetTop,
 | 
| -        this.coordinates.yValue(canvasY));
 | 
| -
 | 
| -    // Insert before cursor node, otherwise it catches clicks.
 | 
| -    this.cursor_div_.parentNode.insertBefore(
 | 
| -        this.horizontal_marker_.markerDiv_, this.cursor_div_);
 | 
| -  } else {
 | 
| -    var index = this.current_index_;
 | 
| -    var m = this.marker_div_;
 | 
| -    var c = this.cursor_div_;
 | 
| -    m.style.top = c.style.top;
 | 
| -    m.style.left = c.style.left;
 | 
| -    m.style.width = c.style.width;
 | 
| -    m.style.height = c.style.height;
 | 
| -    if ("onclick" in this) {
 | 
| -      var this_x = this.clNumbers_[index];
 | 
| -      // TODO(tonyg): When the clNumber is not numeric, the range includes one
 | 
| -      // too many revisions on the starting side.
 | 
| -      var prev_x = this_x;
 | 
| -      if (index > 0) {
 | 
| -        prev_x_source = this.clNumbers_[index-1];
 | 
| -        if (typeof prev_x_source == 'object') {
 | 
| -          prev_x = {};
 | 
| -          for (var key in prev_x_source) {
 | 
| -            prev_x[key] = Plotter.incrementNumericCLNumber(prev_x_source[key]);
 | 
| -          }
 | 
| -        } else {
 | 
| -          prev_x = Plotter.incrementNumericCLNumber(prev_x_source);
 | 
| -        }
 | 
| -      }
 | 
| -      this.onclick(prev_x, this_x);
 | 
| -    }
 | 
| -  }
 | 
| -};
 | 
| -
 | 
| -Plotter.prototype.canvas = function() {
 | 
| -  var canvas = document.createElement("CANVAS");
 | 
| -  canvas.setAttribute("class", "plot");
 | 
| -  canvas.setAttribute("width", this.coordinates.widthMax);
 | 
| -  canvas.setAttribute("height", this.coordinates.heightMax);
 | 
| -  canvas.plotter = this;
 | 
| -  return canvas;
 | 
| -};
 | 
| -
 | 
| -Plotter.prototype.ruler = function() {
 | 
| -  var ruler = document.createElement("DIV");
 | 
| -  ruler.setAttribute("class", "plot-ruler");
 | 
| -  ruler.style.borderBottom = "1px dotted black";
 | 
| -  ruler.style.position = "absolute";
 | 
| -  ruler.style.left = "-2px";
 | 
| -  ruler.style.top = "-2px";
 | 
| -  ruler.style.width = "0px";
 | 
| -  ruler.style.height = "0px";
 | 
| -  return ruler;
 | 
| -};
 | 
| -
 | 
| -Plotter.prototype.graduations = function() {
 | 
| -  // Don't allow a graduation in the bottom 5% of the chart
 | 
| -  // or the number label would overflow the chart bounds.
 | 
| -  var yMin = this.coordinates.yMinValue + .05 * this.coordinates.yValueRange();
 | 
| -  var yRange = this.coordinates.yMaxValue - yMin;
 | 
| -
 | 
| -  // Use the largest scale that fits 3 or more graduations.
 | 
| -  // We allow scales of [...,500, 250, 100, 50, 25, 10,...].
 | 
| -  var scale = 5000000000;
 | 
| -  while (scale) {
 | 
| -    if (Math.floor(yRange / scale) > 2) break;  // 5s
 | 
| -    scale /= 2;
 | 
| -    if (Math.floor(yRange / scale) > 2) break;  // 2.5s
 | 
| -    scale /= 2.5;
 | 
| -    if (Math.floor(yRange / scale) > 2) break;  // 1s
 | 
| -    scale /= 2;
 | 
| -  }
 | 
| -
 | 
| -  var graduationPosition = yMin + (scale - yMin % scale);
 | 
| -  var graduationDivs = [];
 | 
| -  while (graduationPosition < this.coordinates.yMaxValue) {
 | 
| -    var graduation = document.createElement("DIV");
 | 
| -    var canvasPosition = this.coordinates.yPoints(graduationPosition);
 | 
| -    graduation.style.borderTop = "1px dashed rgba(0,0,0,.08)";
 | 
| -    graduation.style.position = "absolute";
 | 
| -    graduation.style.left = this.canvas_elt_.offsetLeft + "px";
 | 
| -    graduation.style.top = canvasPosition + this.canvas_elt_.offsetTop + "px";
 | 
| -    graduation.style.width =
 | 
| -        this.canvas_elt_.offsetWidth - 4 + "px";
 | 
| -    graduation.style.paddingLeft = "4px";
 | 
| -    graduation.style.color = "rgba(0,0,0,.4)";
 | 
| -    graduation.style.fontSize = "9px";
 | 
| -    graduation.style.paddingTop = "0";
 | 
| -    graduation.style.zIndex = "-1";
 | 
| -    graduation.innerHTML = addCommas(graduationPosition);
 | 
| -    graduationDivs.push(graduation);
 | 
| -    graduationPosition += scale;
 | 
| -  }
 | 
| -  return graduationDivs;
 | 
| -};
 | 
| -
 | 
| -Plotter.prototype.coordinates_ = function() {
 | 
| -  var coordinatesDiv = document.createElement("DIV");
 | 
| -  var fontSize = Math.max(0.8, this.width / 400 * 0.75);
 | 
| -  fontSize = Math.min(1.0, fontSize);
 | 
| -
 | 
| -  var table = document.createElement("table");
 | 
| -  coordinatesDiv.appendChild(table);
 | 
| -  table.style.cssText = "border=0; width=100%; font-size:" + fontSize + "em;";
 | 
| -  var tr = document.createElement("tr");
 | 
| -  table.appendChild(tr);
 | 
| -  var td = document.createElement("td");
 | 
| -  tr.appendChild(td);
 | 
| -  td.className = "legend";
 | 
| -  td.innerHTML = "Legend: ";
 | 
| -
 | 
| -  for (var i = 0; i < this.dataDescription_.length; i++) {
 | 
| -    if (i > 0)
 | 
| -      td.appendChild(document.createTextNode(", "));
 | 
| -    var legendItem = document.createElement("a");
 | 
| -    td.appendChild(legendItem);
 | 
| -    legendItem.className = "legend_item";
 | 
| -    legendItem.href = "#";
 | 
| -    legendItem.style.cssText = "text-decoration: none; color: " +
 | 
| -        this.getDataColor(i);
 | 
| -    var obj = this;
 | 
| -    legendItem.onclick = (
 | 
| -      function(){
 | 
| -        var index = i;
 | 
| -        return function() {
 | 
| -          this.style.fontWeight = (obj.toggleSelection(index)) ?
 | 
| -              "bold" : "normal";
 | 
| -          return false;
 | 
| -        };
 | 
| -      })();
 | 
| -    legendItem.innerHTML = this.dataDescription_[i];
 | 
| -  }
 | 
| -
 | 
| -  this.coordinates_td_ = document.createElement("td");
 | 
| -  this.coordinates_td_.innerHTML = "<i>move mouse over graph</i>";
 | 
| -  tr.appendChild(this.coordinates_td_);
 | 
| -
 | 
| -  this.baseline_deltas_td_ = document.createElement("td");
 | 
| -  this.baseline_deltas_td_.style.color = HorizontalMarker.COLOR;
 | 
| -  tr.appendChild(this.baseline_deltas_td_);
 | 
| -
 | 
| -  return coordinatesDiv;
 | 
| -};
 | 
| -
 | 
| -Plotter.prototype.makeColor = function(i) {
 | 
| -  var index = i % this.colors.length;
 | 
| -  return "rgb(" + this.colors[index][0] + "," +
 | 
| -                  this.colors[index][1] + "," +
 | 
| -                  this.colors[index][2] + ")";
 | 
| -};
 | 
| -
 | 
| -Plotter.prototype.getDataColor = function(i) {
 | 
| -  if (this.dataColors_[i]) {
 | 
| -    return this.dataColors_[i];
 | 
| -  } else {
 | 
| -    return this.makeColor(i);
 | 
| -  }
 | 
| -};
 | 
| -
 | 
| -Plotter.prototype.log = function(val) {
 | 
| -  document.getElementById('log').appendChild(
 | 
| -    document.createTextNode(val + '\n'));
 | 
| -};
 | 
| 
 |