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Diffstat (limited to 'web/lib/d3pie-0.2.1-netdata-3.js')
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diff --git a/web/lib/d3pie-0.2.1-netdata-3.js b/web/lib/d3pie-0.2.1-netdata-3.js new file mode 100644 index 000000000..e6ef064af --- /dev/null +++ b/web/lib/d3pie-0.2.1-netdata-3.js @@ -0,0 +1,2123 @@ +/*! + * d3pie + * @author Ben Keen + * @version 0.1.9 + * @date June 17th, 2015 + * @repo http://github.com/benkeen/d3pie + */ + +// UMD pattern from https://github.com/umdjs/umd/blob/master/returnExports.js +(function(root, factory) { + if (typeof define === 'function' && define.amd) { + // AMD. Register as an anonymous module + define([], factory); + } else if (typeof exports === 'object') { + // Node. Does not work with strict CommonJS, but only CommonJS-like environments that support module.exports, + // like Node + module.exports = factory(); + } else { + // browser globals (root is window) + root.d3pie = factory(root); + } +}(this, function() { + + var _scriptName = "d3pie"; + var _version = "0.2.1"; + + // used to uniquely generate IDs and classes, ensuring no conflict between multiple pies on the same page + var _uniqueIDCounter = 0; + + + // this section includes all helper libs on the d3pie object. They're populated via grunt-template. Note: to keep + // the syntax highlighting from getting all messed up, I commented out each line. That REQUIRES each of the files + // to have an empty first line. Crumby, yes, but acceptable. + //// --------- _default-settings.js -----------/** +/** + * Contains the out-the-box settings for the script. Any of these settings that aren't explicitly overridden for the + * d3pie instance will inherit from these. This is also included on the main website for use in the generation script. + */ +var defaultSettings = { + header: { + title: { + text: "", + color: "#333333", + fontSize: 18, + fontWeight: "bold", + font: "arial" + }, + subtitle: { + text: "", + color: "#666666", + fontSize: 14, + fontWeight: "bold", + font: "arial" + }, + location: "top-center", + titleSubtitlePadding: 8 + }, + footer: { + text: "", + color: "#666666", + fontSize: 14, + fontWeight: "bold", + font: "arial", + location: "left" + }, + size: { + canvasHeight: 500, + canvasWidth: 500, + pieInnerRadius: "0%", + pieOuterRadius: null + }, + data: { + sortOrder: "none", + ignoreSmallSegments: { + enabled: false, + valueType: "percentage", + value: null + }, + smallSegmentGrouping: { + enabled: false, + value: 1, + valueType: "percentage", + label: "Other", + color: "#cccccc" + }, + content: [] + }, + labels: { + outer: { + format: "label", + hideWhenLessThanPercentage: null, + pieDistance: 30 + }, + inner: { + format: "percentage", + hideWhenLessThanPercentage: null + }, + mainLabel: { + color: "#333333", + font: "arial", + fontWeight: "normal", + fontSize: 10 + }, + percentage: { + color: "#dddddd", + font: "arial", + fontWeight: "bold", + fontSize: 10, + decimalPlaces: 0 + }, + value: { + color: "#cccc44", + fontWeight: "bold", + font: "arial", + fontSize: 10 + }, + lines: { + enabled: true, + style: "curved", + color: "segment" + }, + truncation: { + enabled: false, + truncateLength: 30 + }, + formatter: null + }, + effects: { + load: { + effect: "none", // "default", commented in the code + speed: 1000 + }, + pullOutSegmentOnClick: { + effect: "none", // "bounce", commented in the code + speed: 300, + size: 10 + }, + highlightSegmentOnMouseover: false, + highlightLuminosity: -0.2 + }, + tooltips: { + enabled: false, + type: "placeholder", // caption|placeholder + string: "", + placeholderParser: null, + styles: { + fadeInSpeed: 250, + backgroundColor: "#000000", + backgroundOpacity: 0.5, + color: "#efefef", + borderRadius: 2, + font: "arial", + fontWeight: "bold", + fontSize: 10, + padding: 4 + } + }, + misc: { + colors: { + background: null, + segments: [ + "#2484c1", "#65a620", "#7b6888", "#a05d56", "#961a1a", "#d8d23a", "#e98125", "#d0743c", "#635222", "#6ada6a", + "#0c6197", "#7d9058", "#207f33", "#44b9b0", "#bca44a", "#e4a14b", "#a3acb2", "#8cc3e9", "#69a6f9", "#5b388f", + "#546e91", "#8bde95", "#d2ab58", "#273c71", "#98bf6e", "#4daa4b", "#98abc5", "#cc1010", "#31383b", "#006391", + "#c2643f", "#b0a474", "#a5a39c", "#a9c2bc", "#22af8c", "#7fcecf", "#987ac6", "#3d3b87", "#b77b1c", "#c9c2b6", + "#807ece", "#8db27c", "#be66a2", "#9ed3c6", "#00644b", "#005064", "#77979f", "#77e079", "#9c73ab", "#1f79a7" + ], + segmentStroke: "#ffffff" + }, + gradient: { + enabled: false, + percentage: 95, + color: "#000000" + }, + canvasPadding: { + top: 5, + right: 5, + bottom: 5, + left: 5 + }, + pieCenterOffset: { + x: 0, + y: 0 + }, + cssPrefix: null + }, + callbacks: { + onload: null, + onMouseoverSegment: null, + onMouseoutSegment: null, + onClickSegment: null + } +}; + + //// --------- validate.js ----------- +var validate = { + + // called whenever a new pie chart is created + initialCheck: function(pie) { + var cssPrefix = pie.cssPrefix; + var element = pie.element; + var options = pie.options; + + // confirm d3 is available [check minimum version] + if (!window.d3 || !window.d3.hasOwnProperty("version")) { + console.error("d3pie error: d3 is not available"); + return false; + } + + // confirm element is either a DOM element or a valid string for a DOM element + if (!(element instanceof HTMLElement || element instanceof SVGElement)) { + console.error("d3pie error: the first d3pie() param must be a valid DOM element (not jQuery) or a ID string."); + return false; + } + + // confirm the CSS prefix is valid. It has to start with a-Z and contain nothing but a-Z0-9_- + if (!(/[a-zA-Z][a-zA-Z0-9_-]*$/.test(cssPrefix))) { + console.error("d3pie error: invalid options.misc.cssPrefix"); + return false; + } + + // confirm some data has been supplied + if (!helpers.isArray(options.data.content)) { + console.error("d3pie error: invalid config structure: missing data.content property."); + return false; + } + if (options.data.content.length === 0) { + console.error("d3pie error: no data supplied."); + return false; + } + + // clear out any invalid data. Each data row needs a valid positive number and a label + var data = []; + for (var i=0; i<options.data.content.length; i++) { + if (typeof options.data.content[i].value !== "number" || isNaN(options.data.content[i].value)) { + console.log("not valid: ", options.data.content[i]); + continue; + } + if (options.data.content[i].value <= 0) { + console.log("not valid - should have positive value: ", options.data.content[i]); + continue; + } + data.push(options.data.content[i]); + } + pie.options.data.content = data; + + // labels.outer.hideWhenLessThanPercentage - 1-100 + // labels.inner.hideWhenLessThanPercentage - 1-100 + + return true; + } +}; + + //// --------- helpers.js ----------- +var helpers = { + + // creates the SVG element + addSVGSpace: function(pie) { + var element = pie.element; + var canvasWidth = pie.options.size.canvasWidth; + var canvasHeight = pie.options.size.canvasHeight; + var backgroundColor = pie.options.misc.colors.background; + + var svg = d3.select(element).append("svg:svg") + .attr("width", canvasWidth) + .attr("height", canvasHeight); + + if (backgroundColor !== "transparent") { + svg.style("background-color", function() { return backgroundColor; }); + } + + return svg; + }, + + shuffleArray: function(array) { + var currentIndex = array.length, tmpVal, randomIndex; + + while (0 !== currentIndex) { + randomIndex = Math.floor(Math.random() * currentIndex); + currentIndex -= 1; + + // and swap it with the current element + tmpVal = array[currentIndex]; + array[currentIndex] = array[randomIndex]; + array[randomIndex] = tmpVal; + } + return array; + }, + + processObj: function(obj, is, value) { + if (typeof is === 'string') { + return helpers.processObj(obj, is.split('.'), value); + } else if (is.length === 1 && value !== undefined) { + obj[is[0]] = value; + return obj[is[0]]; + } else if (is.length === 0) { + return obj; + } else { + return helpers.processObj(obj[is[0]], is.slice(1), value); + } + }, + + getDimensions: function(el) { + if(typeof el === 'string') + el = document.getElementById(el); + + var w = 0, h = 0; + if (el) { + var dimensions = el.getBBox(); + w = dimensions.width; + h = dimensions.height; + } + else { + console.log("error: getDimensions() " + id + " not found."); + } + + return { w: w, h: h }; + }, + + /** + * This is based on the SVG coordinate system, where top-left is 0,0 and bottom right is n-n. + * @param r1 + * @param r2 + * @returns {boolean} + */ + rectIntersect: function(r1, r2) { + var returnVal = ( + // r2.left > r1.right + (r2.x > (r1.x + r1.w)) || + + // r2.right < r1.left + ((r2.x + r2.w) < r1.x) || + + // r2.top < r1.bottom + ((r2.y + r2.h) < r1.y) || + + // r2.bottom > r1.top + (r2.y > (r1.y + r1.h)) + ); + + return !returnVal; + }, + + /** + * Returns a lighter/darker shade of a hex value, based on a luminance value passed. + * @param hex a hex color value such as “#abc” or “#123456″ (the hash is optional) + * @param lum the luminosity factor: -0.1 is 10% darker, 0.2 is 20% lighter, etc. + * @returns {string} + */ + getColorShade: function(hex, lum) { + + // validate hex string + hex = String(hex).replace(/[^0-9a-f]/gi, ''); + if (hex.length < 6) { + hex = hex[0]+hex[0]+hex[1]+hex[1]+hex[2]+hex[2]; + } + lum = lum || 0; + + // convert to decimal and change luminosity + var newHex = "#"; + for (var i=0; i<3; i++) { + var c = parseInt(hex.substr(i * 2, 2), 16); + c = Math.round(Math.min(Math.max(0, c + (c * lum)), 255)).toString(16); + newHex += ("00" + c).substr(c.length); + } + + return newHex; + }, + + /** + * Users can choose to specify segment colors in three ways (in order of precedence): + * 1. include a "color" attribute for each row in data.content + * 2. include a misc.colors.segments property which contains an array of hex codes + * 3. specify nothing at all and rely on this lib provide some reasonable defaults + * + * This function sees what's included and populates this.options.colors with whatever's required + * for this pie chart. + * @param data + */ + initSegmentColors: function(pie) { + var data = pie.options.data.content; + var colors = pie.options.misc.colors.segments; + + // TODO this needs a ton of error handling + + var finalColors = []; + for (var i=0; i<data.length; i++) { + if (data[i].hasOwnProperty("color")) { + finalColors.push(data[i].color); + } else { + finalColors.push(colors[i]); + } + } + + return finalColors; + }, + + applySmallSegmentGrouping: function(data, smallSegmentGrouping) { + var totalSize; + if (smallSegmentGrouping.valueType === "percentage") { + totalSize = math.getTotalPieSize(data); + } + + // loop through each data item + var newData = []; + var groupedData = []; + var totalGroupedData = 0; + for (var i=0; i<data.length; i++) { + if (smallSegmentGrouping.valueType === "percentage") { + var dataPercent = (data[i].value / totalSize) * 100; + if (dataPercent <= smallSegmentGrouping.value) { + groupedData.push(data[i]); + totalGroupedData += data[i].value; + continue; + } + data[i].isGrouped = false; + newData.push(data[i]); + } else { + if (data[i].value <= smallSegmentGrouping.value) { + groupedData.push(data[i]); + totalGroupedData += data[i].value; + continue; + } + data[i].isGrouped = false; + newData.push(data[i]); + } + } + + // we're done! See if there's any small segment groups to add + if (groupedData.length) { + newData.push({ + color: smallSegmentGrouping.color, + label: smallSegmentGrouping.label, + value: totalGroupedData, + isGrouped: true, + groupedData: groupedData + }); + } + + return newData; + }, + + // for debugging + showPoint: function(svg, x, y) { + svg.append("circle").attr("cx", x).attr("cy", y).attr("r", 2).style("fill", "black"); + }, + + isFunction: function(functionToCheck) { + var getType = {}; + return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]'; + }, + + isArray: function(o) { + return Object.prototype.toString.call(o) === '[object Array]'; + } +}; + + +// taken from jQuery +var extend = function() { + var options, name, src, copy, copyIsArray, clone, target = arguments[0] || {}, + i = 1, + length = arguments.length, + deep = false, + toString = Object.prototype.toString, + hasOwn = Object.prototype.hasOwnProperty, + class2type = { + "[object Boolean]": "boolean", + "[object Number]": "number", + "[object String]": "string", + "[object Function]": "function", + "[object Array]": "array", + "[object Date]": "date", + "[object RegExp]": "regexp", + "[object Object]": "object" + }, + + jQuery = { + isFunction: function (obj) { + return jQuery.type(obj) === "function"; + }, + isArray: Array.isArray || + function (obj) { + return jQuery.type(obj) === "array"; + }, + isWindow: function (obj) { + return obj !== null && obj === obj.window; + }, + isNumeric: function (obj) { + return !isNaN(parseFloat(obj)) && isFinite(obj); + }, + type: function (obj) { + return obj === null ? String(obj) : class2type[toString.call(obj)] || "object"; + }, + isPlainObject: function (obj) { + if (!obj || jQuery.type(obj) !== "object" || obj.nodeType) { + return false; + } + try { + if (obj.constructor && !hasOwn.call(obj, "constructor") && !hasOwn.call(obj.constructor.prototype, "isPrototypeOf")) { + return false; + } + } catch (e) { + return false; + } + var key; + for (key in obj) {} + return key === undefined || hasOwn.call(obj, key); + } + }; + if (typeof target === "boolean") { + deep = target; + target = arguments[1] || {}; + i = 2; + } + if (typeof target !== "object" && !jQuery.isFunction(target)) { + target = {}; + } + if (length === i) { + target = this; + --i; + } + for (i; i < length; i++) { + if ((options = arguments[i]) !== null) { + for (name in options) { + src = target[name]; + copy = options[name]; + if (target === copy) { + continue; + } + if (deep && copy && (jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)))) { + if (copyIsArray) { + copyIsArray = false; + clone = src && jQuery.isArray(src) ? src : []; + } else { + clone = src && jQuery.isPlainObject(src) ? src : {}; + } + // WARNING: RECURSION + target[name] = extend(deep, clone, copy); + } else if (copy !== undefined) { + target[name] = copy; + } + } + } + } + return target; +}; + //// --------- math.js ----------- +var math = { + + toRadians: function(degrees) { + return degrees * (Math.PI / 180); + }, + + toDegrees: function(radians) { + return radians * (180 / Math.PI); + }, + + computePieRadius: function(pie) { + var size = pie.options.size; + var canvasPadding = pie.options.misc.canvasPadding; + + // outer radius is either specified (e.g. through the generator), or omitted altogether + // and calculated based on the canvas dimensions. Right now the estimated version isn't great - it should + // be possible to calculate it to precisely generate the maximum sized pie, but it's fussy as heck. Something + // for the next release. + + // first, calculate the default _outerRadius + var w = size.canvasWidth - canvasPadding.left - canvasPadding.right; + var h = size.canvasHeight - canvasPadding.top - canvasPadding.bottom; + + // now factor in the footer, title & subtitle + if (pie.options.header.location !== "pie-center") { + h -= pie.textComponents.headerHeight; + } + + if (pie.textComponents.footer.exists) { + h -= pie.textComponents.footer.h; + } + + // for really teeny pies, h may be < 0. Adjust it back + h = (h < 0) ? 0 : h; + + var outerRadius = ((w < h) ? w : h) / 3; + var innerRadius, percent; + + // if the user specified something, use that instead + if (size.pieOuterRadius !== null) { + if (/%/.test(size.pieOuterRadius)) { + percent = parseInt(size.pieOuterRadius.replace(/[\D]/, ""), 10); + percent = (percent > 99) ? 99 : percent; + percent = (percent < 0) ? 0 : percent; + + var smallestDimension = (w < h) ? w : h; + + // now factor in the label line size + if (pie.options.labels.outer.format !== "none") { + var pieDistanceSpace = parseInt(pie.options.labels.outer.pieDistance, 10) * 2; + if (smallestDimension - pieDistanceSpace > 0) { + smallestDimension -= pieDistanceSpace; + } + } + + outerRadius = Math.floor((smallestDimension / 100) * percent) / 2; + } else { + outerRadius = parseInt(size.pieOuterRadius, 10); + } + } + + // inner radius + if (/%/.test(size.pieInnerRadius)) { + percent = parseInt(size.pieInnerRadius.replace(/[\D]/, ""), 10); + percent = (percent > 99) ? 99 : percent; + percent = (percent < 0) ? 0 : percent; + innerRadius = Math.floor((outerRadius / 100) * percent); + } else { + innerRadius = parseInt(size.pieInnerRadius, 10); + } + + pie.innerRadius = innerRadius; + pie.outerRadius = outerRadius; + }, + + getTotalPieSize: function(data) { + var totalSize = 0; + for (var i=0; i<data.length; i++) { + totalSize += data[i].value; + } + return totalSize; + }, + + sortPieData: function(pie) { + var data = pie.options.data.content; + var sortOrder = pie.options.data.sortOrder; + + switch (sortOrder) { + case "none": + // do nothing + break; + case "random": + data = helpers.shuffleArray(data); + break; + case "value-asc": + data.sort(function(a, b) { return (a.value < b.value) ? -1 : 1; }); + break; + case "value-desc": + data.sort(function(a, b) { return (a.value < b.value) ? 1 : -1; }); + break; + case "label-asc": + data.sort(function(a, b) { return (a.label.toLowerCase() > b.label.toLowerCase()) ? 1 : -1; }); + break; + case "label-desc": + data.sort(function(a, b) { return (a.label.toLowerCase() < b.label.toLowerCase()) ? 1 : -1; }); + break; + } + + return data; + }, + + // var pieCenter = math.getPieCenter(); + getPieTranslateCenter: function(pieCenter) { + return "translate(" + pieCenter.x + "," + pieCenter.y + ")"; + }, + + /** + * Used to determine where on the canvas the center of the pie chart should be. It takes into account the + * height and position of the title, subtitle and footer, and the various paddings. + * @private + */ + calculatePieCenter: function(pie) { + var pieCenterOffset = pie.options.misc.pieCenterOffset; + var hasTopTitle = (pie.textComponents.title.exists && pie.options.header.location !== "pie-center"); + var hasTopSubtitle = (pie.textComponents.subtitle.exists && pie.options.header.location !== "pie-center"); + + var headerOffset = pie.options.misc.canvasPadding.top; + if (hasTopTitle && hasTopSubtitle) { + headerOffset += pie.textComponents.title.h + pie.options.header.titleSubtitlePadding + pie.textComponents.subtitle.h; + } else if (hasTopTitle) { + headerOffset += pie.textComponents.title.h; + } else if (hasTopSubtitle) { + headerOffset += pie.textComponents.subtitle.h; + } + + var footerOffset = 0; + if (pie.textComponents.footer.exists) { + footerOffset = pie.textComponents.footer.h + pie.options.misc.canvasPadding.bottom; + } + + var x = ((pie.options.size.canvasWidth - pie.options.misc.canvasPadding.left - pie.options.misc.canvasPadding.right) / 2) + pie.options.misc.canvasPadding.left; + var y = ((pie.options.size.canvasHeight - footerOffset - headerOffset) / 2) + headerOffset; + + x += pieCenterOffset.x; + y += pieCenterOffset.y; + + pie.pieCenter = { x: x, y: y }; + }, + + + /** + * Rotates a point (x, y) around an axis (xm, ym) by degrees (a). + * @param x + * @param y + * @param xm + * @param ym + * @param a angle in degrees + * @returns {Array} + */ + rotate: function(x, y, xm, ym, a) { + + a = a * Math.PI / 180; // convert to radians + + var cos = Math.cos, + sin = Math.sin, + // subtract midpoints, so that midpoint is translated to origin and add it in the end again + xr = (x - xm) * cos(a) - (y - ym) * sin(a) + xm, + yr = (x - xm) * sin(a) + (y - ym) * cos(a) + ym; + + return { x: xr, y: yr }; + }, + + /** + * Translates a point x, y by distance d, and by angle a. + * @param x + * @param y + * @param dist + * @param a angle in degrees + */ + translate: function(x, y, d, a) { + var rads = math.toRadians(a); + return { + x: x + d * Math.sin(rads), + y: y - d * Math.cos(rads) + }; + }, + + // from: http://stackoverflow.com/questions/19792552/d3-put-arc-labels-in-a-pie-chart-if-there-is-enough-space + pointIsInArc: function(pt, ptData, d3Arc) { + // Center of the arc is assumed to be 0,0 + // (pt.x, pt.y) are assumed to be relative to the center + var r1 = d3Arc.innerRadius()(ptData), // Note: Using the innerRadius + r2 = d3Arc.outerRadius()(ptData), + theta1 = d3Arc.startAngle()(ptData), + theta2 = d3Arc.endAngle()(ptData); + + var dist = pt.x * pt.x + pt.y * pt.y, + angle = Math.atan2(pt.x, -pt.y); // Note: different coordinate system + + angle = (angle < 0) ? (angle + Math.PI * 2) : angle; + + return (r1 * r1 <= dist) && (dist <= r2 * r2) && + (theta1 <= angle) && (angle <= theta2); + } +}; + + //// --------- labels.js ----------- +var labels = { + + /** + * Adds the labels to the pie chart, but doesn't position them. There are two locations for the + * labels: inside (center) of the segments, or outside the segments on the edge. + * @param section "inner" or "outer" + * @param sectionDisplayType "percentage", "value", "label", "label-value1", etc. + * @param pie + */ + add: function(pie, section, sectionDisplayType) { + var include = labels.getIncludes(sectionDisplayType); + var settings = pie.options.labels; + + // group the label groups (label, percentage, value) into a single element for simpler positioning + var outerLabel = pie.svg.insert("g", "." + pie.cssPrefix + "labels-" + section) + .attr("class", pie.cssPrefix + "labels-" + section); + + var labelGroup = pie.__labels[section] = outerLabel.selectAll("." + pie.cssPrefix + "labelGroup-" + section) + .data(pie.options.data.content) + .enter() + .append("g") + .attr("id", function(d, i) { return pie.cssPrefix + "labelGroup" + i + "-" + section; }) + .attr("data-index", function(d, i) { return i; }) + .attr("class", pie.cssPrefix + "labelGroup-" + section) + .style("opacity", 0); + + var formatterContext = { section: section, sectionDisplayType: sectionDisplayType }; + + // 1. Add the main label + if (include.mainLabel) { + labelGroup.append("text") + .attr("id", function(d, i) { return pie.cssPrefix + "segmentMainLabel" + i + "-" + section; }) + .attr("class", pie.cssPrefix + "segmentMainLabel-" + section) + .text(function(d, i) { + var str = d.label; + + // if a custom formatter has been defined, pass it the raw label string - it can do whatever it wants with it. + // we only apply truncation if it's not defined + if (settings.formatter) { + formatterContext.index = i; + formatterContext.part = 'mainLabel'; + formatterContext.value = d.value; + formatterContext.label = str; + str = settings.formatter(formatterContext); + } else if (settings.truncation.enabled && d.label.length > settings.truncation.truncateLength) { + str = d.label.substring(0, settings.truncation.truncateLength) + "..."; + } + return str; + }) + .style("font-size", settings.mainLabel.fontSize + "px") + .style("font-family", settings.mainLabel.font) + .style("font-weight", settings.mainLabel.fontWeight) + .style("fill", function(d, i) { + return (settings.mainLabel.color === "segment") ? pie.options.colors[i] : settings.mainLabel.color; + }); + } + + // 2. Add the percentage label + if (include.percentage) { + labelGroup.append("text") + .attr("id", function(d, i) { return pie.cssPrefix + "segmentPercentage" + i + "-" + section; }) + .attr("class", pie.cssPrefix + "segmentPercentage-" + section) + .text(function(d, i) { + var percentage = d.percentage; + if (settings.formatter) { + formatterContext.index = i; + formatterContext.part = "percentage"; + formatterContext.value = d.value; + formatterContext.label = d.percentage; + percentage = settings.formatter(formatterContext); + } else { + percentage += "%"; + } + return percentage; + }) + .style("font-size", settings.percentage.fontSize + "px") + .style("font-family", settings.percentage.font) + .style("font-weight", settings.percentage.fontWeight) + .style("fill", settings.percentage.color); + } + + // 3. Add the value label + if (include.value) { + labelGroup.append("text") + .attr("id", function(d, i) { return pie.cssPrefix + "segmentValue" + i + "-" + section; }) + .attr("class", pie.cssPrefix + "segmentValue-" + section) + .text(function(d, i) { + formatterContext.index = i; + formatterContext.part = "value"; + formatterContext.value = d.value; + formatterContext.label = d.value; + return settings.formatter ? settings.formatter(formatterContext, d.value) : d.value; + }) + .style("font-size", settings.value.fontSize + "px") + .style("font-family", settings.value.font) + .style("font-weight", settings.value.fontWeight) + .style("fill", settings.value.color); + } + }, + + /** + * @param section "inner" / "outer" + */ + positionLabelElements: function(pie, section, sectionDisplayType) { + labels["dimensions-" + section] = []; + + // get the latest widths, heights + var labelGroups = pie.__labels[section]; + labelGroups.each(function(d, i) { + var mainLabel = d3.select(this).selectAll("." + pie.cssPrefix + "segmentMainLabel-" + section); + var percentage = d3.select(this).selectAll("." + pie.cssPrefix + "segmentPercentage-" + section); + var value = d3.select(this).selectAll("." + pie.cssPrefix + "segmentValue-" + section); + + labels["dimensions-" + section].push({ + mainLabel: (mainLabel.node() !== null) ? mainLabel.node().getBBox() : null, + percentage: (percentage.node() !== null) ? percentage.node().getBBox() : null, + value: (value.node() !== null) ? value.node().getBBox() : null + }); + }); + + var singleLinePad = 5; + var dims = labels["dimensions-" + section]; + switch (sectionDisplayType) { + case "label-value1": + pie.svg.selectAll("." + pie.cssPrefix + "segmentValue-" + section) + .attr("dx", function(d, i) { return dims[i].mainLabel.width + singleLinePad; }); + break; + case "label-value2": + pie.svg.selectAll("." + pie.cssPrefix + "segmentValue-" + section) + .attr("dy", function(d, i) { return dims[i].mainLabel.height; }); + break; + case "label-percentage1": + pie.svg.selectAll("." + pie.cssPrefix + "segmentPercentage-" + section) + .attr("dx", function(d, i) { return dims[i].mainLabel.width + singleLinePad; }); + break; + case "label-percentage2": + pie.svg.selectAll("." + pie.cssPrefix + "segmentPercentage-" + section) + .attr("dx", function(d, i) { return (dims[i].mainLabel.width / 2) - (dims[i].percentage.width / 2); }) + .attr("dy", function(d, i) { return dims[i].mainLabel.height; }); + break; + } + }, + + computeLabelLinePositions: function(pie) { + pie.lineCoordGroups = []; + pie.__labels.outer + .each(function(d, i) { return labels.computeLinePosition(pie, i); }); + }, + + computeLinePosition: function(pie, i) { + var angle = segments.getSegmentAngle(i, pie.options.data.content, pie.totalSize, { midpoint: true }); + var originCoords = math.rotate(pie.pieCenter.x, pie.pieCenter.y - pie.outerRadius, pie.pieCenter.x, pie.pieCenter.y, angle); + var heightOffset = pie.outerLabelGroupData[i].h / 5; // TODO check + var labelXMargin = 6; // the x-distance of the label from the end of the line [TODO configurable] + + var quarter = Math.floor(angle / 90); + var midPoint = 4; + var x2, y2, x3, y3; + + // this resolves an issue when the + if (quarter === 2 && angle === 180) { + quarter = 1; + } + + switch (quarter) { + case 0: + x2 = pie.outerLabelGroupData[i].x - labelXMargin - ((pie.outerLabelGroupData[i].x - labelXMargin - originCoords.x) / 2); + y2 = pie.outerLabelGroupData[i].y + ((originCoords.y - pie.outerLabelGroupData[i].y) / midPoint); + x3 = pie.outerLabelGroupData[i].x - labelXMargin; + y3 = pie.outerLabelGroupData[i].y - heightOffset; + break; + case 1: + x2 = originCoords.x + (pie.outerLabelGroupData[i].x - originCoords.x) / midPoint; + y2 = originCoords.y + (pie.outerLabelGroupData[i].y - originCoords.y) / midPoint; + x3 = pie.outerLabelGroupData[i].x - labelXMargin; + y3 = pie.outerLabelGroupData[i].y - heightOffset; + break; + case 2: + var startOfLabelX = pie.outerLabelGroupData[i].x + pie.outerLabelGroupData[i].w + labelXMargin; + x2 = originCoords.x - (originCoords.x - startOfLabelX) / midPoint; + y2 = originCoords.y + (pie.outerLabelGroupData[i].y - originCoords.y) / midPoint; + x3 = pie.outerLabelGroupData[i].x + pie.outerLabelGroupData[i].w + labelXMargin; + y3 = pie.outerLabelGroupData[i].y - heightOffset; + break; + case 3: + var startOfLabel = pie.outerLabelGroupData[i].x + pie.outerLabelGroupData[i].w + labelXMargin; + x2 = startOfLabel + ((originCoords.x - startOfLabel) / midPoint); + y2 = pie.outerLabelGroupData[i].y + (originCoords.y - pie.outerLabelGroupData[i].y) / midPoint; + x3 = pie.outerLabelGroupData[i].x + pie.outerLabelGroupData[i].w + labelXMargin; + y3 = pie.outerLabelGroupData[i].y - heightOffset; + break; + } + + /* + * x1 / y1: the x/y coords of the start of the line, at the mid point of the segments arc on the pie circumference + * x2 / y2: if "curved" line style is being used, this is the midpoint of the line. Other + * x3 / y3: the end of the line; closest point to the label + */ + if (pie.options.labels.lines.style === "straight") { + pie.lineCoordGroups[i] = [ + { x: originCoords.x, y: originCoords.y }, + { x: x3, y: y3 } + ]; + } else { + pie.lineCoordGroups[i] = [ + { x: originCoords.x, y: originCoords.y }, + { x: x2, y: y2 }, + { x: x3, y: y3 } + ]; + } + }, + + addLabelLines: function(pie) { + var lineGroups = pie.svg.insert("g", "." + pie.cssPrefix + "pieChart") // meaning, BEFORE .pieChart + .attr("class", pie.cssPrefix + "lineGroups") + .style("opacity", 1); + + var lineGroup = lineGroups.selectAll("." + pie.cssPrefix + "lineGroup") + .data(pie.lineCoordGroups) + .enter() + .append("g") + .attr("class", pie.cssPrefix + "lineGroup"); + + var lineFunction = d3.line() + .curve(d3.curveBasis) + .x(function(d) { return d.x; }) + .y(function(d) { return d.y; }); + + lineGroup.append("path") + .attr("d", lineFunction) + .attr("stroke", function(d, i) { + return (pie.options.labels.lines.color === "segment") ? pie.options.colors[i] : pie.options.labels.lines.color; + }) + .attr("stroke-width", 1) + .attr("fill", "none") + .style("opacity", function(d, i) { + var percentage = pie.options.labels.outer.hideWhenLessThanPercentage; + var isHidden = (percentage !== null && d.percentage < percentage) || pie.options.data.content[i].label === ""; + return isHidden ? 0 : 1; + }); + }, + + positionLabelGroups: function(pie, section) { + if (pie.options.labels[section].format === "none") + return; + + pie.__labels[section] + .style("opacity", function(d, i) { + var percentage = pie.options.labels[section].hideWhenLessThanPercentage; + return (percentage !== null && d.percentage < percentage) ? 0 : 1; + }) + .attr("transform", function(d, i) { + var x, y; + if (section === "outer") { + x = pie.outerLabelGroupData[i].x; + y = pie.outerLabelGroupData[i].y; + } else { + var pieCenterCopy = extend(true, {}, pie.pieCenter); + + // now recompute the "center" based on the current _innerRadius + if (pie.innerRadius > 0) { + var angle = segments.getSegmentAngle(i, pie.options.data.content, pie.totalSize, { midpoint: true }); + var newCoords = math.translate(pie.pieCenter.x, pie.pieCenter.y, pie.innerRadius, angle); + pieCenterCopy.x = newCoords.x; + pieCenterCopy.y = newCoords.y; + } + + var dims = helpers.getDimensions(pie.cssPrefix + "labelGroup" + i + "-inner"); + var xOffset = dims.w / 2; + var yOffset = dims.h / 4; // confusing! Why 4? should be 2, but it doesn't look right + + x = pieCenterCopy.x + (pie.lineCoordGroups[i][0].x - pieCenterCopy.x) / 1.8; + y = pieCenterCopy.y + (pie.lineCoordGroups[i][0].y - pieCenterCopy.y) / 1.8; + + x = x - xOffset; + y = y + yOffset; + } + + return "translate(" + x + "," + y + ")"; + }); + }, + + + getIncludes: function(val) { + var addMainLabel = false; + var addValue = false; + var addPercentage = false; + + switch (val) { + case "label": + addMainLabel = true; + break; + case "value": + addValue = true; + break; + case "percentage": + addPercentage = true; + break; + case "label-value1": + case "label-value2": + addMainLabel = true; + addValue = true; + break; + case "label-percentage1": + case "label-percentage2": + addMainLabel = true; + addPercentage = true; + break; + } + return { + mainLabel: addMainLabel, + value: addValue, + percentage: addPercentage + }; + }, + + + /** + * This does the heavy-lifting to compute the actual coordinates for the outer label groups. It does two things: + * 1. Make a first pass and position them in the ideal positions, based on the pie sizes + * 2. Do some basic collision avoidance. + */ + computeOuterLabelCoords: function(pie) { + + // 1. figure out the ideal positions for the outer labels + pie.__labels.outer + .each(function(d, i) { + return labels.getIdealOuterLabelPositions(pie, i); + }); + + // 2. now adjust those positions to try to accommodate conflicts + labels.resolveOuterLabelCollisions(pie); + }, + + /** + * This attempts to resolve label positioning collisions. + */ + resolveOuterLabelCollisions: function(pie) { + if (pie.options.labels.outer.format === "none") { + return; + } + + var size = pie.options.data.content.length; + labels.checkConflict(pie, 0, "clockwise", size); + labels.checkConflict(pie, size-1, "anticlockwise", size); + }, + + checkConflict: function(pie, currIndex, direction, size) { + var i, curr; + + if (size <= 1) { + return; + } + + var currIndexHemisphere = pie.outerLabelGroupData[currIndex].hs; + if (direction === "clockwise" && currIndexHemisphere !== "right") { + return; + } + if (direction === "anticlockwise" && currIndexHemisphere !== "left") { + return; + } + var nextIndex = (direction === "clockwise") ? currIndex+1 : currIndex-1; + + // this is the current label group being looked at. We KNOW it's positioned properly (the first item + // is always correct) + var currLabelGroup = pie.outerLabelGroupData[currIndex]; + + // this one we don't know about. That's the one we're going to look at and move if necessary + var examinedLabelGroup = pie.outerLabelGroupData[nextIndex]; + + var info = { + labelHeights: pie.outerLabelGroupData[0].h, + center: pie.pieCenter, + lineLength: (pie.outerRadius + pie.options.labels.outer.pieDistance), + heightChange: pie.outerLabelGroupData[0].h + 1 // 1 = padding + }; + + // loop through *ALL* label groups examined so far to check for conflicts. This is because when they're + // very tightly fitted, a later label group may still appear high up on the page + if (direction === "clockwise") { + i = 0; + for (; i<=currIndex; i++) { + curr = pie.outerLabelGroupData[i]; + + // if there's a conflict with this label group, shift the label to be AFTER the last known + // one that's been properly placed + if (!labels.isLabelHidden(pie, i) && helpers.rectIntersect(curr, examinedLabelGroup)) { + labels.adjustLabelPos(pie, nextIndex, currLabelGroup, info); + break; + } + } + } else { + i = size - 1; + for (; i >= currIndex; i--) { + curr = pie.outerLabelGroupData[i]; + + // if there's a conflict with this label group, shift the label to be AFTER the last known + // one that's been properly placed + if (!labels.isLabelHidden(pie, i) && helpers.rectIntersect(curr, examinedLabelGroup)) { + labels.adjustLabelPos(pie, nextIndex, currLabelGroup, info); + break; + } + } + } + labels.checkConflict(pie, nextIndex, direction, size); + }, + + isLabelHidden: function(pie, index) { + var percentage = pie.options.labels.outer.hideWhenLessThanPercentage; + return (percentage !== null && d.percentage < percentage) || pie.options.data.content[index].label === ""; + }, + + // does a little math to shift a label into a new position based on the last properly placed one + adjustLabelPos: function(pie, nextIndex, lastCorrectlyPositionedLabel, info) { + var xDiff, yDiff, newXPos, newYPos; + newYPos = lastCorrectlyPositionedLabel.y + info.heightChange; + yDiff = info.center.y - newYPos; + + if (Math.abs(info.lineLength) > Math.abs(yDiff)) { + xDiff = Math.sqrt((info.lineLength * info.lineLength) - (yDiff * yDiff)); + } else { + xDiff = Math.sqrt((yDiff * yDiff) - (info.lineLength * info.lineLength)); + } + + if (lastCorrectlyPositionedLabel.hs === "right") { + newXPos = info.center.x + xDiff; + } else { + newXPos = info.center.x - xDiff - pie.outerLabelGroupData[nextIndex].w; + } + + pie.outerLabelGroupData[nextIndex].x = newXPos; + pie.outerLabelGroupData[nextIndex].y = newYPos; + }, + + /** + * @param i 0-N where N is the dataset size - 1. + */ + getIdealOuterLabelPositions: function(pie, i) { + var labelGroupNode = pie.svg.select("#" + pie.cssPrefix + "labelGroup" + i + "-outer").node(); + if (!labelGroupNode) return; + + var labelGroupDims = labelGroupNode.getBBox(); + var angle = segments.getSegmentAngle(i, pie.options.data.content, pie.totalSize, { midpoint: true }); + + var originalX = pie.pieCenter.x; + var originalY = pie.pieCenter.y - (pie.outerRadius + pie.options.labels.outer.pieDistance); + var newCoords = math.rotate(originalX, originalY, pie.pieCenter.x, pie.pieCenter.y, angle); + + // if the label is on the left half of the pie, adjust the values + var hemisphere = "right"; // hemisphere + if (angle > 180) { + newCoords.x -= (labelGroupDims.width + 8); + hemisphere = "left"; + } else { + newCoords.x += 8; + } + + pie.outerLabelGroupData[i] = { + x: newCoords.x, + y: newCoords.y, + w: labelGroupDims.width, + h: labelGroupDims.height, + hs: hemisphere + }; + } +}; + + //// --------- segments.js ----------- +var segments = { + + effectMap: { + "none": d3.easeLinear, + "bounce": d3.easeBounce, + "linear": d3.easeLinear, + "sin": d3.easeSin, + "elastic": d3.easeElastic, + "back": d3.easeBack, + "quad": d3.easeQuad, + "circle": d3.easeCircle, + "exp": d3.easeExp + }, + + /** + * Creates the pie chart segments and displays them according to the desired load effect. + * @private + */ + create: function(pie) { + var pieCenter = pie.pieCenter; + var colors = pie.options.colors; + var loadEffects = pie.options.effects.load; + var segmentStroke = pie.options.misc.colors.segmentStroke; + + // we insert the pie chart BEFORE the title, to ensure the title overlaps the pie + var pieChartElement = pie.svg.insert("g", "#" + pie.cssPrefix + "title") + .attr("transform", function() { return math.getPieTranslateCenter(pieCenter); }) + .attr("class", pie.cssPrefix + "pieChart"); + + var arc = d3.arc() + .innerRadius(pie.innerRadius) + .outerRadius(pie.outerRadius) + .startAngle(0) + .endAngle(function(d) { + return (d.value / pie.totalSize) * 2 * Math.PI; + }); + + var g = pieChartElement.selectAll("." + pie.cssPrefix + "arc") + .data(pie.options.data.content) + .enter() + .append("g") + .attr("class", pie.cssPrefix + "arc"); + + // if we're not fading in the pie, just set the load speed to 0 + //var loadSpeed = loadEffects.speed; + //if (loadEffects.effect === "none") { + // loadSpeed = 0; + //} + + g.append("path") + .attr("id", function(d, i) { return pie.cssPrefix + "segment" + i; }) + .attr("fill", function(d, i) { + var color = colors[i]; + if (pie.options.misc.gradient.enabled) { + color = "url(#" + pie.cssPrefix + "grad" + i + ")"; + } + return color; + }) + .style("stroke", segmentStroke) + .style("stroke-width", 1) + //.transition() + //.ease(d3.easeCubicInOut) + //.duration(loadSpeed) + .attr("data-index", function(d, i) { return i; }) + .attr("d", arc); +/* + .attrTween("d", function(b) { + var i = d3.interpolate({ value: 0 }, b); + return function(t) { + var ret = pie.arc(i(t)); + console.log(ret); + return ret; + }; + }); +*/ + pie.svg.selectAll("g." + pie.cssPrefix + "arc") + .attr("transform", + function(d, i) { + var angle = 0; + if (i > 0) { + angle = segments.getSegmentAngle(i-1, pie.options.data.content, pie.totalSize); + } + return "rotate(" + angle + ")"; + } + ); + pie.arc = arc; + }, + + addGradients: function(pie) { + var grads = pie.svg.append("defs") + .selectAll("radialGradient") + .data(pie.options.data.content) + .enter().append("radialGradient") + .attr("gradientUnits", "userSpaceOnUse") + .attr("cx", 0) + .attr("cy", 0) + .attr("r", "120%") + .attr("id", function(d, i) { return pie.cssPrefix + "grad" + i; }); + + grads.append("stop").attr("offset", "0%").style("stop-color", function(d, i) { return pie.options.colors[i]; }); + grads.append("stop").attr("offset", pie.options.misc.gradient.percentage + "%").style("stop-color", pie.options.misc.gradient.color); + }, + + addSegmentEventHandlers: function(pie) { + var arc = pie.svg.selectAll("." + pie.cssPrefix + "arc"); + arc = arc.merge(pie.__labels.inner.merge(pie.__labels.outer)); + + arc.on("click", function() { + var currentEl = d3.select(this); + var segment; + + // mouseover works on both the segments AND the segment labels, hence the following + if (currentEl.attr("class") === pie.cssPrefix + "arc") { + segment = currentEl.select("path"); + } else { + var index = currentEl.attr("data-index"); + segment = d3.select("#" + pie.cssPrefix + "segment" + index); + } + + var isExpanded = segment.attr("class") === pie.cssPrefix + "expanded"; + segments.onSegmentEvent(pie, pie.options.callbacks.onClickSegment, segment, isExpanded); + if (pie.options.effects.pullOutSegmentOnClick.effect !== "none") { + if (isExpanded) { + segments.closeSegment(pie, segment.node()); + } else { + segments.openSegment(pie, segment.node()); + } + } + }); + + arc.on("mouseover", function() { + var currentEl = d3.select(this); + var segment, index; + + if (currentEl.attr("class") === pie.cssPrefix + "arc") { + segment = currentEl.select("path"); + } else { + index = currentEl.attr("data-index"); + segment = d3.select("#" + pie.cssPrefix + "segment" + index); + } + + if (pie.options.effects.highlightSegmentOnMouseover) { + index = segment.attr("data-index"); + var segColor = pie.options.colors[index]; + segment.style("fill", helpers.getColorShade(segColor, pie.options.effects.highlightLuminosity)); + } + + if (pie.options.tooltips.enabled) { + index = segment.attr("data-index"); + tt.showTooltip(pie, index); + } + + var isExpanded = segment.attr("class") === pie.cssPrefix + "expanded"; + segments.onSegmentEvent(pie, pie.options.callbacks.onMouseoverSegment, segment, isExpanded); + }); + + arc.on("mousemove", function() { + tt.moveTooltip(pie); + }); + + arc.on("mouseout", function() { + var currentEl = d3.select(this); + var segment, index; + + if (currentEl.attr("class") === pie.cssPrefix + "arc") { + segment = currentEl.select("path"); + } else { + index = currentEl.attr("data-index"); + segment = d3.select("#" + pie.cssPrefix + "segment" + index); + } + + if (pie.options.effects.highlightSegmentOnMouseover) { + index = segment.attr("data-index"); + var color = pie.options.colors[index]; + if (pie.options.misc.gradient.enabled) { + color = "url(#" + pie.cssPrefix + "grad" + index + ")"; + } + segment.style("fill", color); + } + + if (pie.options.tooltips.enabled) { + index = segment.attr("data-index"); + tt.hideTooltip(pie, index); + } + + var isExpanded = segment.attr("class") === pie.cssPrefix + "expanded"; + segments.onSegmentEvent(pie, pie.options.callbacks.onMouseoutSegment, segment, isExpanded); + }); + }, + + // helper function used to call the click, mouseover, mouseout segment callback functions + onSegmentEvent: function(pie, func, segment, isExpanded) { + if (!helpers.isFunction(func)) { + return; + } + var index = parseInt(segment.attr("data-index"), 10); + func({ + segment: segment.node(), + index: index, + expanded: isExpanded, + data: pie.options.data.content[index] + }); + }, + + openSegment: function(pie, segment) { + if (pie.isOpeningSegment) { + return; + } + pie.isOpeningSegment = true; + + segments.maybeCloseOpenSegment(pie); + + d3.select(segment) + .transition() + .ease(segments.effectMap[pie.options.effects.pullOutSegmentOnClick.effect]) + .duration(pie.options.effects.pullOutSegmentOnClick.speed) + .attr("transform", function(d, i) { + var c = pie.arc.centroid(d), + x = c[0], + y = c[1], + h = Math.sqrt(x*x + y*y), + pullOutSize = parseInt(pie.options.effects.pullOutSegmentOnClick.size, 10); + + return "translate(" + ((x/h) * pullOutSize) + ',' + ((y/h) * pullOutSize) + ")"; + }) + .on("end", function(d, i) { + pie.currentlyOpenSegment = segment; + pie.isOpeningSegment = false; + d3.select(segment).attr("class", pie.cssPrefix + "expanded"); + }); + }, + + maybeCloseOpenSegment: function(pie) { + if (typeof pie !== 'undefined' && pie.svg.selectAll("." + pie.cssPrefix + "expanded").size() > 0) { + segments.closeSegment(pie, pie.svg.select("." + pie.cssPrefix + "expanded").node()); + } + }, + + closeSegment: function(pie, segment) { + d3.select(segment) + .transition() + .duration(400) + .attr("transform", "translate(0,0)") + .on("end", function(d, i) { + d3.select(segment).attr("class", ""); + pie.currentlyOpenSegment = null; + }); + }, + + getCentroid: function(el) { + var bbox = el.getBBox(); + return { + x: bbox.x + bbox.width / 2, + y: bbox.y + bbox.height / 2 + }; + }, + + /** + * General helper function to return a segment's angle, in various different ways. + * @param index + * @param opts optional object for fine-tuning exactly what you want. + */ + getSegmentAngle: function(index, data, totalSize, opts) { + var options = extend({ + // if true, this returns the full angle from the origin. Otherwise it returns the single segment angle + compounded: true, + + // optionally returns the midpoint of the angle instead of the full angle + midpoint: false + }, opts); + + var currValue = data[index].value; + var fullValue; + if (options.compounded) { + fullValue = 0; + + // get all values up to and including the specified index + for (var i=0; i<=index; i++) { + fullValue += data[i].value; + } + } + + if (typeof fullValue === 'undefined') { + fullValue = currValue; + } + + // now convert the full value to an angle + var angle = (fullValue / totalSize) * 360; + + // lastly, if we want the midpoint, factor that sucker in + if (options.midpoint) { + var currAngle = (currValue / totalSize) * 360; + angle -= (currAngle / 2); + } + + return angle; + } + +}; + + //// --------- text.js ----------- +var text = { + offscreenCoord: -10000, + + addTitle: function(pie) { + pie.__title = pie.svg.selectAll("." + pie.cssPrefix + "title") + .data([pie.options.header.title]) + .enter() + .append("text") + .text(function(d) { return d.text; }) + .attr("id", pie.cssPrefix + "title") + .attr("class", pie.cssPrefix + "title") + .attr("x", text.offscreenCoord) + .attr("y", text.offscreenCoord) + .attr("text-anchor", function() { + var location; + if (pie.options.header.location === "top-center" || pie.options.header.location === "pie-center") { + location = "middle"; + } else { + location = "left"; + } + return location; + }) + .attr("fill", function(d) { return d.color; }) + .style("font-size", function(d) { return d.fontSize + "px"; }) + .style("font-weight", function(d) { return d.fontWeight; }) + .style("font-family", function(d) { return d.font; }); + }, + + positionTitle: function(pie) { + var textComponents = pie.textComponents; + var headerLocation = pie.options.header.location; + var canvasPadding = pie.options.misc.canvasPadding; + var canvasWidth = pie.options.size.canvasWidth; + var titleSubtitlePadding = pie.options.header.titleSubtitlePadding; + + var x; + if (headerLocation === "top-left") { + x = canvasPadding.left; + } else { + x = ((canvasWidth - canvasPadding.right) / 2) + canvasPadding.left; + } + + // add whatever offset has been added by user + x += pie.options.misc.pieCenterOffset.x; + + var y = canvasPadding.top + textComponents.title.h; + + if (headerLocation === "pie-center") { + y = pie.pieCenter.y; + + // still not fully correct + if (textComponents.subtitle.exists) { + var totalTitleHeight = textComponents.title.h + titleSubtitlePadding + textComponents.subtitle.h; + y = y - (totalTitleHeight / 2) + textComponents.title.h; + } else { + y += (textComponents.title.h / 4); + } + } + + pie.__title + .attr("x", x) + .attr("y", y); + }, + + addSubtitle: function(pie) { + var headerLocation = pie.options.header.location; + + pie.__subtitle = pie.svg.selectAll("." + pie.cssPrefix + "subtitle") + .data([pie.options.header.subtitle]) + .enter() + .append("text") + .text(function(d) { return d.text; }) + .attr("x", text.offscreenCoord) + .attr("y", text.offscreenCoord) + .attr("id", pie.cssPrefix + "subtitle") + .attr("class", pie.cssPrefix + "subtitle") + .attr("text-anchor", function() { + var location; + if (headerLocation === "top-center" || headerLocation === "pie-center") { + location = "middle"; + } else { + location = "left"; + } + return location; + }) + .attr("fill", function(d) { return d.color; }) + .style("font-size", function(d) { return d.fontSize + "px"; }) + .style("font-weight", function(d) { return d.fontWeight; }) + .style("font-family", function(d) { return d.font; }); + }, + + positionSubtitle: function(pie) { + var canvasPadding = pie.options.misc.canvasPadding; + var canvasWidth = pie.options.size.canvasWidth; + + var x; + if (pie.options.header.location === "top-left") { + x = canvasPadding.left; + } else { + x = ((canvasWidth - canvasPadding.right) / 2) + canvasPadding.left; + } + + // add whatever offset has been added by user + x += pie.options.misc.pieCenterOffset.x; + + var y = text.getHeaderHeight(pie); + + pie.__subtitle + .attr("x", x) + .attr("y", y); + }, + + addFooter: function(pie) { + pie.__footer = pie.svg.selectAll("." + pie.cssPrefix + "footer") + .data([pie.options.footer]) + .enter() + .append("text") + .text(function(d) { return d.text; }) + .attr("x", text.offscreenCoord) + .attr("y", text.offscreenCoord) + .attr("id", pie.cssPrefix + "footer") + .attr("class", pie.cssPrefix + "footer") + .attr("text-anchor", function() { + var location = "left"; + if (pie.options.footer.location === "bottom-center") { + location = "middle"; + } else if (pie.options.footer.location === "bottom-right") { + location = "left"; // on purpose. We have to change the x-coord to make it properly right-aligned + } + return location; + }) + .attr("fill", function(d) { return d.color; }) + .style("font-size", function(d) { return d.fontSize + "px"; }) + .style("font-weight", function(d) { return d.fontWeight; }) + .style("font-family", function(d) { return d.font; }); + }, + + positionFooter: function(pie) { + var footerLocation = pie.options.footer.location; + var footerWidth = pie.textComponents.footer.w; + var canvasWidth = pie.options.size.canvasWidth; + var canvasHeight = pie.options.size.canvasHeight; + var canvasPadding = pie.options.misc.canvasPadding; + + var x; + if (footerLocation === "bottom-left") { + x = canvasPadding.left; + } else if (footerLocation === "bottom-right") { + x = canvasWidth - footerWidth - canvasPadding.right; + } else { + x = canvasWidth / 2; // TODO - shouldn't this also take into account padding? + } + + pie.__footer + .attr("x", x) + .attr("y", canvasHeight - canvasPadding.bottom); + }, + + getHeaderHeight: function(pie) { + var h; + if (pie.textComponents.title.exists) { + + // if the subtitle isn't defined, it'll be set to 0 + var totalTitleHeight = pie.textComponents.title.h + pie.options.header.titleSubtitlePadding + pie.textComponents.subtitle.h; + if (pie.options.header.location === "pie-center") { + h = pie.pieCenter.y - (totalTitleHeight / 2) + totalTitleHeight; + } else { + h = totalTitleHeight + pie.options.misc.canvasPadding.top; + } + } else { + if (pie.options.header.location === "pie-center") { + var footerPlusPadding = pie.options.misc.canvasPadding.bottom + pie.textComponents.footer.h; + h = ((pie.options.size.canvasHeight - footerPlusPadding) / 2) + pie.options.misc.canvasPadding.top + (pie.textComponents.subtitle.h / 2); + } else { + h = pie.options.misc.canvasPadding.top + pie.textComponents.subtitle.h; + } + } + return h; + } +}; + + //// --------- validate.js ----------- +var tt = { + addTooltips: function(pie) { + + // group the label groups (label, percentage, value) into a single element for simpler positioning + var tooltips = pie.svg.insert("g") + .attr("class", pie.cssPrefix + "tooltips"); + + tooltips.selectAll("." + pie.cssPrefix + "tooltip") + .data(pie.options.data.content) + .enter() + .append("g") + .attr("class", pie.cssPrefix + "tooltip") + .attr("id", function(d, i) { return pie.cssPrefix + "tooltip" + i; }) + .style("opacity", 0) + .append("rect") + .attr("rx", pie.options.tooltips.styles.borderRadius) + .attr("ry", pie.options.tooltips.styles.borderRadius) + .attr("x", -pie.options.tooltips.styles.padding) + .attr("opacity", pie.options.tooltips.styles.backgroundOpacity) + .style("fill", pie.options.tooltips.styles.backgroundColor); + + tooltips.selectAll("." + pie.cssPrefix + "tooltip") + .data(pie.options.data.content) + .append("text") + .attr("fill", function(d) { return pie.options.tooltips.styles.color; }) + .style("font-size", function(d) { return pie.options.tooltips.styles.fontSize; }) + .style("font-weight", function(d) { return pie.options.tooltips.styles.fontWeight; }) + .style("font-family", function(d) { return pie.options.tooltips.styles.font; }) + .text(function(d, i) { + var caption = pie.options.tooltips.string; + if (pie.options.tooltips.type === "caption") { + caption = d.caption; + } + return tt.replacePlaceholders(pie, caption, i, { + label: d.label, + value: d.value, + percentage: d.percentage + }); + }); + + tooltips.selectAll("." + pie.cssPrefix + "tooltip rect") + .attr("width", function (d, i) { + var dims = helpers.getDimensions(pie.cssPrefix + "tooltip" + i); + return dims.w + (2 * pie.options.tooltips.styles.padding); + }) + .attr("height", function (d, i) { + var dims = helpers.getDimensions(pie.cssPrefix + "tooltip" + i); + return dims.h + (2 * pie.options.tooltips.styles.padding); + }) + .attr("y", function (d, i) { + var dims = helpers.getDimensions(pie.cssPrefix + "tooltip" + i); + return -(dims.h / 2) + 1; + }); + }, + + showTooltip: function(pie, index) { + var fadeInSpeed = pie.options.tooltips.styles.fadeInSpeed; + if (tt.currentTooltip === index) { + fadeInSpeed = 1; + } + + tt.currentTooltip = index; + d3.select("#" + pie.cssPrefix + "tooltip" + index) + .transition() + .duration(fadeInSpeed) + .style("opacity", function() { return 1; }); + + tt.moveTooltip(pie); + }, + + moveTooltip: function(pie) { + d3.selectAll("#" + pie.cssPrefix + "tooltip" + tt.currentTooltip) + .attr("transform", function(d) { + var mouseCoords = d3.mouse(this.parentNode); + var x = mouseCoords[0] + pie.options.tooltips.styles.padding + 2; + var y = mouseCoords[1] - (2 * pie.options.tooltips.styles.padding) - 2; + return "translate(" + x + "," + y + ")"; + }); + }, + + hideTooltip: function(pie, index) { + d3.select("#" + pie.cssPrefix + "tooltip" + index) + .style("opacity", function() { return 0; }); + + // move the tooltip offscreen. This ensures that when the user next mouseovers the segment the hidden + // element won't interfere + d3.select("#" + pie.cssPrefix + "tooltip" + tt.currentTooltip) + .attr("transform", function(d, i) { + // klutzy, but it accounts for tooltip padding which could push it onscreen + var x = pie.options.size.canvasWidth + 1000; + var y = pie.options.size.canvasHeight + 1000; + return "translate(" + x + "," + y + ")"; + }); + }, + + replacePlaceholders: function(pie, str, index, replacements) { + + // if the user has defined a placeholderParser function, call it before doing the replacements + if (helpers.isFunction(pie.options.tooltips.placeholderParser)) { + pie.options.tooltips.placeholderParser(index, replacements); + } + + var replacer = function() { + return function(match) { + var placeholder = arguments[1]; + if (replacements.hasOwnProperty(placeholder)) { + return replacements[arguments[1]]; + } else { + return arguments[0]; + } + }; + }; + return str.replace(/\{(\w+)\}/g, replacer(replacements)); + } +}; + + + // -------------------------------------------------------------------------------------------- + + // our constructor + var d3pie = function(element, options) { + + // element can be an ID or DOM element + this.element = element; + if (typeof element === "string") { + var el = element.replace(/^#/, ""); // replace any jQuery-like ID hash char + this.element = document.getElementById(el); + } + + var opts = {}; + extend(true, opts, defaultSettings, options); + this.options = opts; + + // if the user specified a custom CSS element prefix (ID, class), use it + if (this.options.misc.cssPrefix !== null) { + this.cssPrefix = this.options.misc.cssPrefix; + } else { + this.cssPrefix = "p" + _uniqueIDCounter + "_"; + _uniqueIDCounter++; + } + + + // now run some validation on the user-defined info + if (!validate.initialCheck(this)) { + return; + } + + // add a data-role to the DOM node to let anyone know that it contains a d3pie instance, and the d3pie version + d3.select(this.element).attr(_scriptName, _version); + + // things that are done once + _setupData.call(this); + _init.call(this); + }; + + d3pie.prototype.recreate = function() { + // now run some validation on the user-defined info + if (!validate.initialCheck(this)) { + return; + } + + _setupData.call(this); + _init.call(this); + }; + + d3pie.prototype.redraw = function() { + this.element.innerHTML = ""; + _init.call(this); + }; + + d3pie.prototype.destroy = function() { + this.element.innerHTML = ""; // clear out the SVG + d3.select(this.element).attr(_scriptName, null); // remove the data attr + }; + + /** + * Returns all pertinent info about the current open info. Returns null if nothing's open, or if one is, an object of + * the following form: + * { + * element: DOM NODE, + * index: N, + * data: {} + * } + */ + d3pie.prototype.getOpenSegment = function() { + var segment = this.currentlyOpenSegment; + if (segment !== null && typeof segment !== "undefined") { + var index = parseInt(d3.select(segment).attr("data-index"), 10); + return { + element: segment, + index: index, + data: this.options.data.content[index] + }; + } else { + return null; + } + }; + + d3pie.prototype.openSegment = function(index) { + index = parseInt(index, 10); + if (index < 0 || index > this.options.data.content.length-1) { + return; + } + segments.openSegment(this, d3.select("#" + this.cssPrefix + "segment" + index).node()); + }; + + d3pie.prototype.closeSegment = function() { + segments.maybeCloseOpenSegment(this); + }; + + // this let's the user dynamically update aspects of the pie chart without causing a complete redraw. It + // intelligently re-renders only the part of the pie that the user specifies. Some things cause a repaint, others + // just redraw the single element + d3pie.prototype.updateProp = function(propKey, value) { + switch (propKey) { + case "header.title.text": + var oldVal = helpers.processObj(this.options, propKey); + helpers.processObj(this.options, propKey, value); + d3.select("#" + this.cssPrefix + "title").html(value); + if ((oldVal === "" && value !== "") || (oldVal !== "" && value === "")) { + this.redraw(); + } + break; + + case "header.subtitle.text": + var oldValue = helpers.processObj(this.options, propKey); + helpers.processObj(this.options, propKey, value); + d3.select("#" + this.cssPrefix + "subtitle").html(value); + if ((oldValue === "" && value !== "") || (oldValue !== "" && value === "")) { + this.redraw(); + } + break; + + case "callbacks.onload": + case "callbacks.onMouseoverSegment": + case "callbacks.onMouseoutSegment": + case "callbacks.onClickSegment": + case "effects.pullOutSegmentOnClick.effect": + case "effects.pullOutSegmentOnClick.speed": + case "effects.pullOutSegmentOnClick.size": + case "effects.highlightSegmentOnMouseover": + case "effects.highlightLuminosity": + helpers.processObj(this.options, propKey, value); + break; + + // everything else, attempt to update it & do a repaint + default: + helpers.processObj(this.options, propKey, value); + + this.destroy(); + this.recreate(); + break; + } + }; + + + // ------------------------------------------------------------------------------------------------ + + var _setupData = function () { + this.options.data.content = math.sortPieData(this); + if (this.options.data.smallSegmentGrouping.enabled) { + this.options.data.content = helpers.applySmallSegmentGrouping(this.options.data.content, this.options.data.smallSegmentGrouping); + } + + + this.options.colors = helpers.initSegmentColors(this); + this.totalSize = math.getTotalPieSize(this.options.data.content); + + var dp = this.options.labels.percentage.decimalPlaces; + + // add in percentage data to content + for (var i=0; i<this.options.data.content.length; i++) { + this.options.data.content[i].percentage = _getPercentage(this.options.data.content[i].value, this.totalSize, dp); + } + + // adjust the final item to ensure the percentage always adds up to precisely 100%. This is necessary + var totalPercentage = 0; + for (var j=0; j<this.options.data.content.length; j++) { + if (j === this.options.data.content.length - 1) { + this.options.data.content[j].percentage = (100 - totalPercentage).toFixed(dp); + } + totalPercentage += parseFloat(this.options.data.content[j].percentage); + } + }; + + var _init = function() { + + // prep-work + this.svg = helpers.addSVGSpace(this); + + // store info about the main text components as part of the d3pie object instance + this.textComponents = { + headerHeight: 0, + title: { + exists: this.options.header.title.text !== "", + h: 0, + w: 0 + }, + subtitle: { + exists: this.options.header.subtitle.text !== "", + h: 0, + w: 0 + }, + footer: { + exists: this.options.footer.text !== "", + h: 0, + w: 0 + } + }; + + this.outerLabelGroupData = []; + + // add the key text components offscreen (title, subtitle, footer). We need to know their widths/heights for later computation + if (this.textComponents.title.exists) text.addTitle(this); + if (this.textComponents.subtitle.exists) text.addSubtitle(this); + text.addFooter(this); + + // console.log(this); + + // the footer never moves. Put it in place now + var self = this; + text.positionFooter(self); + var d3 = helpers.getDimensions(self.__footer.node()); + self.textComponents.footer.h = d3.h; + self.textComponents.footer.w = d3.w; + + if (self.textComponents.title.exists) { + var d1 = helpers.getDimensions(self.__title.node()); + self.textComponents.title.h = d1.h; + self.textComponents.title.w = d1.w; + } + + if (self.textComponents.subtitle.exists) { + var d2 = helpers.getDimensions(self.__subtitle.node()); + self.textComponents.subtitle.h = d2.h; + self.textComponents.subtitle.w = d2.w; + } + + // now compute the full header height + if (self.textComponents.title.exists || self.textComponents.subtitle.exists) { + var headerHeight = 0; + if (self.textComponents.title.exists) { + headerHeight += self.textComponents.title.h; + if (self.textComponents.subtitle.exists) { + headerHeight += self.options.header.titleSubtitlePadding; + } + } + if (self.textComponents.subtitle.exists) { + headerHeight += self.textComponents.subtitle.h; + } + self.textComponents.headerHeight = headerHeight; + } + + // at this point, all main text component dimensions have been calculated + math.computePieRadius(self); + + // this value is used all over the place for placing things and calculating locations. We figure it out ONCE + // and store it as part of the object + math.calculatePieCenter(self); + + // position the title and subtitle + text.positionTitle(self); + text.positionSubtitle(self); + + // now create the pie chart segments, and gradients if the user desired + if (self.options.misc.gradient.enabled) { + segments.addGradients(self); + } + segments.create(self); // also creates this.arc + + self.__labels = {}; + labels.add(self, "inner", self.options.labels.inner.format); + labels.add(self, "outer", self.options.labels.outer.format); + + // position the label elements relatively within their individual group (label, percentage, value) + labels.positionLabelElements(self, "inner", self.options.labels.inner.format); + labels.positionLabelElements(self, "outer", self.options.labels.outer.format); + labels.computeOuterLabelCoords(self); + + // this is (and should be) dumb. It just places the outer groups at their calculated, collision-free positions + labels.positionLabelGroups(self, "outer"); + + // we use the label line positions for many other calculations, so ALWAYS compute them + labels.computeLabelLinePositions(self); + + // only add them if they're actually enabled + if (self.options.labels.lines.enabled && self.options.labels.outer.format !== "none") { + labels.addLabelLines(self); + } + + labels.positionLabelGroups(self, "inner"); + + if (helpers.isFunction(self.options.callbacks.onload)) { + try { + self.options.callbacks.onload(); + } catch (e) { } + } + + // add and position the tooltips + if (self.options.tooltips.enabled) { + tt.addTooltips(self); + } + + segments.addSegmentEventHandlers(self); + }; + + var _getPercentage = function(value, total, decimalPlaces) { + var relativeAmount = value / total; + if (decimalPlaces <= 0) { + return Math.round(relativeAmount * 100); + } else { + return (relativeAmount * 100).toFixed(decimalPlaces); + } + }; + + return d3pie; +})); |