* search) and generic DOM-manipulation functions.
*/
-(function() {
-
/*global Dygraph:false, Node:false */
"use strict";
-Dygraph.LOG_SCALE = 10;
-Dygraph.LN_TEN = Math.log(Dygraph.LOG_SCALE);
+import * as DygraphTickers from './dygraph-tickers';
+
+export var LOG_SCALE = 10;
+export var LN_TEN = Math.log(LOG_SCALE);
/**
* @private
* @param {number} x
* @return {number}
*/
-Dygraph.log10 = function(x) {
- return Math.log(x) / Dygraph.LN_TEN;
+export var log10 = function(x) {
+ return Math.log(x) / LN_TEN;
+};
+
+/**
+ * @private
+ * @param {number} r0
+ * @param {number} r1
+ * @param {number} pct
+ * @return {number}
+ */
+export var logRangeFraction = function(r0, r1, pct) {
+ // Computing the inverse of toPercentXCoord. The function was arrived at with
+ // the following steps:
+ //
+ // Original calcuation:
+ // pct = (log(x) - log(xRange[0])) / (log(xRange[1]) - log(xRange[0])));
+ //
+ // Multiply both sides by the right-side denominator.
+ // pct * (log(xRange[1] - log(xRange[0]))) = log(x) - log(xRange[0])
+ //
+ // add log(xRange[0]) to both sides
+ // log(xRange[0]) + (pct * (log(xRange[1]) - log(xRange[0])) = log(x);
+ //
+ // Swap both sides of the equation,
+ // log(x) = log(xRange[0]) + (pct * (log(xRange[1]) - log(xRange[0]))
+ //
+ // Use both sides as the exponent in 10^exp and we're done.
+ // x = 10 ^ (log(xRange[0]) + (pct * (log(xRange[1]) - log(xRange[0])))
+
+ var logr0 = log10(r0);
+ var logr1 = log10(r1);
+ var exponent = logr0 + (pct * (logr1 - logr0));
+ var value = Math.pow(LOG_SCALE, exponent);
+ return value;
};
/** A dotted line stroke pattern. */
-Dygraph.DOTTED_LINE = [2, 2];
+export var DOTTED_LINE = [2, 2];
/** A dashed line stroke pattern. */
-Dygraph.DASHED_LINE = [7, 3];
+export var DASHED_LINE = [7, 3];
/** A dot dash stroke pattern. */
-Dygraph.DOT_DASH_LINE = [7, 2, 2, 2];
+export var DOT_DASH_LINE = [7, 2, 2, 2];
+
+// Directions for panning and zooming. Use bit operations when combined
+// values are possible.
+export var HORIZONTAL = 1;
+export var VERTICAL = 2;
/**
* Return the 2d context for a dygraph canvas.
*
* This method is only exposed for the sake of replacing the function in
- * automated tests, e.g.
+ * automated tests.
*
- * var oldFunc = Dygraph.getContext();
- * Dygraph.getContext = function(canvas) {
- * var realContext = oldFunc(canvas);
- * return new Proxy(realContext);
- * };
* @param {!HTMLCanvasElement} canvas
* @return {!CanvasRenderingContext2D}
* @private
*/
-Dygraph.getContext = function(canvas) {
+export var getContext = function(canvas) {
return /** @type{!CanvasRenderingContext2D}*/(canvas.getContext("2d"));
};
* on the event. The function takes one parameter: the event object.
* @private
*/
-Dygraph.addEvent = function addEvent(elem, type, fn) {
+export var addEvent = function addEvent(elem, type, fn) {
elem.addEventListener(type, fn, false);
};
/**
- * Add an event handler. This event handler is kept until the graph is
- * destroyed with a call to graph.destroy().
- *
- * @param {!Node} elem The element to add the event to.
- * @param {string} type The type of the event, e.g. 'click' or 'mousemove'.
- * @param {function(Event):(boolean|undefined)} fn The function to call
- * on the event. The function takes one parameter: the event object.
- * @private
- */
-Dygraph.prototype.addAndTrackEvent = function(elem, type, fn) {
- Dygraph.addEvent(elem, type, fn);
- this.registeredEvents_.push({ elem : elem, type : type, fn : fn });
-};
-
-/**
* Remove an event handler.
* @param {!Node} elem The element to remove the event from.
* @param {string} type The type of the event, e.g. 'click' or 'mousemove'.
* @param {function(Event):(boolean|undefined)} fn The function to call
* on the event. The function takes one parameter: the event object.
- * @private
*/
-Dygraph.removeEvent = function(elem, type, fn) {
+export function removeEvent(elem, type, fn) {
elem.removeEventListener(type, fn, false);
};
-Dygraph.prototype.removeTrackedEvents_ = function() {
- if (this.registeredEvents_) {
- for (var idx = 0; idx < this.registeredEvents_.length; idx++) {
- var reg = this.registeredEvents_[idx];
- Dygraph.removeEvent(reg.elem, reg.type, reg.fn);
- }
- }
-
- this.registeredEvents_ = [];
-};
-
/**
* Cancels further processing of an event. This is useful to prevent default
* browser actions, e.g. highlighting text on a double-click.
* @param {!Event} e The event whose normal behavior should be canceled.
* @private
*/
-Dygraph.cancelEvent = function(e) {
+export function cancelEvent(e) {
e = e ? e : window.event;
if (e.stopPropagation) {
e.stopPropagation();
* @return { string } "rgb(r,g,b)" where r, g and b range from 0-255.
* @private
*/
-Dygraph.hsvToRGB = function (hue, saturation, value) {
+export function hsvToRGB(hue, saturation, value) {
var red;
var green;
var blue;
* @return {{x:number,y:number}}
* @private
*/
-Dygraph.findPos = function(obj) {
+export function findPos(obj) {
var p = obj.getBoundingClientRect(),
w = window,
d = document.documentElement;
* @return {number}
* @private
*/
-Dygraph.pageX = function(e) {
+export function pageX(e) {
if (e.isTouchOver) return (!e.changedTouches[0] || e.changedTouches[0].pageX < 0) ? 0 : e.changedTouches[0].pageX;
return (!e.pageX || e.pageX < 0) ? 0 : e.pageX;
};
* @return {number}
* @private
*/
-Dygraph.pageY = function(e) {
+export function pageY(e) {
if (e.isTouchOver) return (!e.changedTouches[0] || e.changedTouches[0].pageY < 0) ? 0 : e.changedTouches[0].pageY;
return (!e.pageY || e.pageY < 0) ? 0 : e.pageY;
};
* @param {!DygraphInteractionContext} context Interaction context object.
* @return {number} The amount by which the drag has moved to the right.
*/
-Dygraph.dragGetX_ = function(e, context) {
- return Dygraph.pageX(e) - context.px;
+export function dragGetX_(e, context) {
+ return pageX(e) - context.px;
};
/**
* @param {!DygraphInteractionContext} context Interaction context object.
* @return {number} The amount by which the drag has moved down.
*/
-Dygraph.dragGetY_ = function(e, context) {
- return Dygraph.pageY(e) - context.py;
+export function dragGetY_(e, context) {
+ return pageY(e) - context.py;
};
/**
* @return {boolean} Whether the number is zero or NaN.
* @private
*/
-Dygraph.isOK = function(x) {
+export function isOK(x) {
return !!x && !isNaN(x);
};
* @return {boolean} Whether the point has numeric x and y.
* @private
*/
-Dygraph.isValidPoint = function(p, opt_allowNaNY) {
+export function isValidPoint(p, opt_allowNaNY) {
if (!p) return false; // null or undefined object
if (p.yval === null) return false; // missing point
if (p.x === null || p.x === undefined) return false;
};
/**
- * Number formatting function which mimicks the behavior of %g in printf, i.e.
+ * Number formatting function which mimics the behavior of %g in printf, i.e.
* either exponential or fixed format (without trailing 0s) is used depending on
* the length of the generated string. The advantage of this format is that
* there is a predictable upper bound on the resulting string length,
* @return {string} A string formatted like %g in printf. The max generated
* string length should be precision + 6 (e.g 1.123e+300).
*/
-Dygraph.floatFormat = function(x, opt_precision) {
+export function floatFormat(x, opt_precision) {
// Avoid invalid precision values; [1, 21] is the valid range.
var p = Math.min(Math.max(1, opt_precision || 2), 21);
* @return {string}
* @private
*/
-Dygraph.zeropad = function(x) {
+export function zeropad(x) {
if (x < 10) return "0" + x; else return "" + x;
};
* day, hour, minute, second and millisecond) according to local time,
* and factory method to call the Date constructor with an array of arguments.
*/
-Dygraph.DateAccessorsLocal = {
- getFullYear: function(d) {return d.getFullYear();},
- getMonth: function(d) {return d.getMonth();},
- getDate: function(d) {return d.getDate();},
- getHours: function(d) {return d.getHours();},
- getMinutes: function(d) {return d.getMinutes();},
- getSeconds: function(d) {return d.getSeconds();},
- getMilliseconds: function(d) {return d.getMilliseconds();},
- getDay: function(d) {return d.getDay();},
+export var DateAccessorsLocal = {
+ getFullYear: d => d.getFullYear(),
+ getMonth: d => d.getMonth(),
+ getDate: d => d.getDate(),
+ getHours: d => d.getHours(),
+ getMinutes: d => d.getMinutes(),
+ getSeconds: d => d.getSeconds(),
+ getMilliseconds: d => d.getMilliseconds(),
+ getDay: d => d.getDay(),
makeDate: function(y, m, d, hh, mm, ss, ms) {
return new Date(y, m, d, hh, mm, ss, ms);
}
* day of month, hour, minute, second and millisecond) according to UTC time,
* and factory method to call the Date constructor with an array of arguments.
*/
-Dygraph.DateAccessorsUTC = {
- getFullYear: function(d) {return d.getUTCFullYear();},
- getMonth: function(d) {return d.getUTCMonth();},
- getDate: function(d) {return d.getUTCDate();},
- getHours: function(d) {return d.getUTCHours();},
- getMinutes: function(d) {return d.getUTCMinutes();},
- getSeconds: function(d) {return d.getUTCSeconds();},
- getMilliseconds: function(d) {return d.getUTCMilliseconds();},
- getDay: function(d) {return d.getUTCDay();},
+export var DateAccessorsUTC = {
+ getFullYear: d => d.getUTCFullYear(),
+ getMonth: d => d.getUTCMonth(),
+ getDate: d => d.getUTCDate(),
+ getHours: d => d.getUTCHours(),
+ getMinutes: d => d.getUTCMinutes(),
+ getSeconds: d => d.getUTCSeconds(),
+ getMilliseconds: d => d.getUTCMilliseconds(),
+ getDay: d => d.getUTCDay(),
makeDate: function(y, m, d, hh, mm, ss, ms) {
return new Date(Date.UTC(y, m, d, hh, mm, ss, ms));
}
* @return {string} A time of the form "HH:MM" or "HH:MM:SS"
* @private
*/
-Dygraph.hmsString_ = function(hh, mm, ss) {
- var zeropad = Dygraph.zeropad;
+export function hmsString_(hh, mm, ss, ms) {
var ret = zeropad(hh) + ":" + zeropad(mm);
if (ss) {
ret += ":" + zeropad(ss);
+ if (ms) {
+ var str = "" + ms;
+ ret += "." + ('000'+str).substring(str.length);
+ }
}
return ret;
};
/**
* Convert a JS date (millis since epoch) to a formatted string.
* @param {number} time The JavaScript time value (ms since epoch)
- * @param {boolean} utc Wether output UTC or local time
+ * @param {boolean} utc Whether output UTC or local time
* @return {string} A date of one of these forms:
* "YYYY/MM/DD", "YYYY/MM/DD HH:MM" or "YYYY/MM/DD HH:MM:SS"
* @private
*/
-Dygraph.dateString_ = function(time, utc) {
- var zeropad = Dygraph.zeropad;
- var accessors = utc ? Dygraph.DateAccessorsUTC : Dygraph.DateAccessorsLocal;
+export function dateString_(time, utc) {
+ var accessors = utc ? DateAccessorsUTC : DateAccessorsLocal;
var date = new Date(time);
var y = accessors.getFullYear(date);
var m = accessors.getMonth(date);
var hh = accessors.getHours(date);
var mm = accessors.getMinutes(date);
var ss = accessors.getSeconds(date);
+ var ms = accessors.getMilliseconds(date);
// Get a year string:
var year = "" + y;
// Get a 0 padded month string
var month = zeropad(m + 1); //months are 0-offset, sigh
// Get a 0 padded day string
var day = zeropad(d);
- var frac = hh * 3600 + mm * 60 + ss;
+ var frac = hh * 3600 + mm * 60 + ss + 1e-3 * ms;
var ret = year + "/" + month + "/" + day;
if (frac) {
- ret += " " + Dygraph.hmsString_(hh, mm, ss);
+ ret += " " + hmsString_(hh, mm, ss, ms);
}
return ret;
};
* @return {number} The rounded number
* @private
*/
-Dygraph.round_ = function(num, places) {
+export function round_(num, places) {
var shift = Math.pow(10, places);
return Math.round(num * shift)/shift;
};
* @return {number} Index of the element, or -1 if it isn't found.
* @private
*/
-Dygraph.binarySearch = function(val, arry, abs, low, high) {
+export function binarySearch(val, arry, abs, low, high) {
if (low === null || low === undefined ||
high === null || high === undefined) {
low = 0;
return mid;
}
}
- return Dygraph.binarySearch(val, arry, abs, low, mid - 1);
+ return binarySearch(val, arry, abs, low, mid - 1);
} else if (element < val) {
if (abs < 0) {
// Accept if element < val, but also if prior element > val.
return mid;
}
}
- return Dygraph.binarySearch(val, arry, abs, mid + 1, high);
+ return binarySearch(val, arry, abs, mid + 1, high);
}
return -1; // can't actually happen, but makes closure compiler happy
};
* @return {number} Milliseconds since epoch.
* @private
*/
-Dygraph.dateParser = function(dateStr) {
+export function dateParser(dateStr) {
var dateStrSlashed;
var d;
// Issue: http://code.google.com/p/dygraphs/issues/detail?id=255
if (dateStr.search("-") == -1 ||
dateStr.search("T") != -1 || dateStr.search("Z") != -1) {
- d = Dygraph.dateStrToMillis(dateStr);
+ d = dateStrToMillis(dateStr);
if (d && !isNaN(d)) return d;
}
while (dateStrSlashed.search("-") != -1) {
dateStrSlashed = dateStrSlashed.replace("-", "/");
}
- d = Dygraph.dateStrToMillis(dateStrSlashed);
+ d = dateStrToMillis(dateStrSlashed);
} else if (dateStr.length == 8) { // e.g. '20090712'
// TODO(danvk): remove support for this format. It's confusing.
dateStrSlashed = dateStr.substr(0,4) + "/" + dateStr.substr(4,2) + "/" +
dateStr.substr(6,2);
- d = Dygraph.dateStrToMillis(dateStrSlashed);
+ d = dateStrToMillis(dateStrSlashed);
} else {
// Any format that Date.parse will accept, e.g. "2009/07/12" or
// "2009/07/12 12:34:56"
- d = Dygraph.dateStrToMillis(dateStr);
+ d = dateStrToMillis(dateStr);
}
if (!d || isNaN(d)) {
* @return {number} millis since epoch
* @private
*/
-Dygraph.dateStrToMillis = function(str) {
+export function dateStrToMillis(str) {
return new Date(str).getTime();
};
* @param {!Object} o
* @return {!Object}
*/
-Dygraph.update = function(self, o) {
+export function update(self, o) {
if (typeof(o) != 'undefined' && o !== null) {
for (var k in o) {
if (o.hasOwnProperty(k)) {
* @return {!Object}
* @private
*/
-Dygraph.updateDeep = function (self, o) {
+export function updateDeep(self, o) {
// Taken from http://stackoverflow.com/questions/384286/javascript-isdom-how-do-you-check-if-a-javascript-object-is-a-dom-object
function isNode(o) {
return (
if (o.hasOwnProperty(k)) {
if (o[k] === null) {
self[k] = null;
- } else if (Dygraph.isArrayLike(o[k])) {
+ } else if (isArrayLike(o[k])) {
self[k] = o[k].slice();
} else if (isNode(o[k])) {
// DOM objects are shallowly-copied.
if (typeof(self[k]) != 'object' || self[k] === null) {
self[k] = {};
}
- Dygraph.updateDeep(self[k], o[k]);
+ updateDeep(self[k], o[k]);
} else {
self[k] = o[k];
}
* @return {boolean}
* @private
*/
-Dygraph.isArrayLike = function(o) {
+export function isArrayLike(o) {
var typ = typeof(o);
if (
(typ != 'object' && !(typ == 'function' &&
* @return {boolean}
* @private
*/
-Dygraph.isDateLike = function (o) {
+export function isDateLike(o) {
if (typeof(o) != "object" || o === null ||
typeof(o.getTime) != 'function') {
return false;
* @return {!Array}
* @private
*/
-Dygraph.clone = function(o) {
+export function clone(o) {
// TODO(danvk): figure out how MochiKit's version works
var r = [];
for (var i = 0; i < o.length; i++) {
- if (Dygraph.isArrayLike(o[i])) {
- r.push(Dygraph.clone(o[i]));
+ if (isArrayLike(o[i])) {
+ r.push(clone(o[i]));
} else {
r.push(o[i]);
}
* @return {!HTMLCanvasElement}
* @private
*/
-Dygraph.createCanvas = function() {
+export function createCanvas() {
return document.createElement('canvas');
};
* @return {number} The ratio of the device pixel ratio and the backing store
* ratio for the specified context.
*/
-Dygraph.getContextPixelRatio = function(context) {
+export function getContextPixelRatio(context) {
try {
var devicePixelRatio = window.devicePixelRatio;
var backingStoreRatio = context.webkitBackingStorePixelRatio ||
};
/**
- * Checks whether the user is on an Android browser.
- * Android does not fully support the <canvas> tag, e.g. w/r/t/ clipping.
- * @return {boolean}
- * @private
- */
-Dygraph.isAndroid = function() {
- return (/Android/).test(navigator.userAgent);
-};
-
-
-/**
* TODO(danvk): use @template here when it's better supported for classes.
* @param {!Array} array
* @param {number} start
* @param {function(!Array,?):boolean=} predicate
* @constructor
*/
-Dygraph.Iterator = function(array, start, length, predicate) {
+export function Iterator(array, start, length, predicate) {
start = start || 0;
length = length || array.length;
this.hasNext = true; // Use to identify if there's another element.
/**
* @return {Object}
*/
-Dygraph.Iterator.prototype.next = function() {
+Iterator.prototype.next = function() {
if (!this.hasNext) {
return null;
}
* returned. If omitted, all elements are accepted.
* @private
*/
-Dygraph.createIterator = function(array, start, length, opt_predicate) {
- return new Dygraph.Iterator(array, start, length, opt_predicate);
+export function createIterator(array, start, length, opt_predicate) {
+ return new Iterator(array, start, length, opt_predicate);
};
// Shim layer with setTimeout fallback.
// From: http://paulirish.com/2011/requestanimationframe-for-smart-animating/
// Should be called with the window context:
// Dygraph.requestAnimFrame.call(window, function() {})
-Dygraph.requestAnimFrame = (function() {
+export var requestAnimFrame = (function() {
return window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
* @param {function()} cleanupFn A function to call after all repeatFn calls.
* @private
*/
-Dygraph.repeatAndCleanup = function(repeatFn, maxFrames, framePeriodInMillis,
+export function repeatAndCleanup(repeatFn, maxFrames, framePeriodInMillis,
cleanupFn) {
var frameNumber = 0;
var previousFrameNumber;
(function loop() {
if (frameNumber >= maxFrames) return;
- Dygraph.requestAnimFrame.call(window, function() {
+ requestAnimFrame.call(window, function() {
// Determine which frame to draw based on the delay so far. Will skip
// frames if necessary.
var currentTime = new Date().getTime();
'annotationDblClickHandler': true,
'annotationMouseOutHandler': true,
'annotationMouseOverHandler': true,
- 'axisLabelColor': true,
'axisLineColor': true,
'axisLineWidth': true,
'clickCallback': true,
'highlightCallback': true,
'highlightCircleSize': true,
'interactionModel': true,
- 'isZoomedIgnoreProgrammaticZoom': true,
'labelsDiv': true,
- 'labelsDivStyles': true,
- 'labelsDivWidth': true,
'labelsKMB': true,
'labelsKMG2': true,
'labelsSeparateLines': true,
* @return {boolean} true if the graph needs new points else false.
* @private
*/
-Dygraph.isPixelChangingOptionList = function(labels, attrs) {
+export function isPixelChangingOptionList(labels, attrs) {
// Assume that we do not require new points.
// This will change to true if we actually do need new points.
return false;
};
-Dygraph.Circles = {
+export var Circles = {
DEFAULT : function(g, name, ctx, canvasx, canvasy, color, radius) {
ctx.beginPath();
ctx.fillStyle = color;
};
/**
- * To create a "drag" interaction, you typically register a mousedown event
- * handler on the element where the drag begins. In that handler, you register a
- * mouseup handler on the window to determine when the mouse is released,
- * wherever that release happens. This works well, except when the user releases
- * the mouse over an off-domain iframe. In that case, the mouseup event is
- * handled by the iframe and never bubbles up to the window handler.
- *
- * To deal with this issue, we cover iframes with high z-index divs to make sure
- * they don't capture mouseup.
- *
- * Usage:
- * element.addEventListener('mousedown', function() {
- * var tarper = new Dygraph.IFrameTarp();
- * tarper.cover();
- * var mouseUpHandler = function() {
- * ...
- * window.removeEventListener(mouseUpHandler);
- * tarper.uncover();
- * };
- * window.addEventListener('mouseup', mouseUpHandler);
- * };
- *
- * @constructor
- */
-Dygraph.IFrameTarp = function() {
- /** @type {Array.<!HTMLDivElement>} */
- this.tarps = [];
-};
-
-/**
- * Find all the iframes in the document and cover them with high z-index
- * transparent divs.
- */
-Dygraph.IFrameTarp.prototype.cover = function() {
- var iframes = document.getElementsByTagName("iframe");
- for (var i = 0; i < iframes.length; i++) {
- var iframe = iframes[i];
- var pos = Dygraph.findPos(iframe),
- x = pos.x,
- y = pos.y,
- width = iframe.offsetWidth,
- height = iframe.offsetHeight;
-
- var div = document.createElement("div");
- div.style.position = "absolute";
- div.style.left = x + 'px';
- div.style.top = y + 'px';
- div.style.width = width + 'px';
- div.style.height = height + 'px';
- div.style.zIndex = 999;
- document.body.appendChild(div);
- this.tarps.push(div);
- }
-};
-
-/**
- * Remove all the iframe covers. You should call this in a mouseup handler.
- */
-Dygraph.IFrameTarp.prototype.uncover = function() {
- for (var i = 0; i < this.tarps.length; i++) {
- this.tarps[i].parentNode.removeChild(this.tarps[i]);
- }
- this.tarps = [];
-};
-
-/**
* Determine whether |data| is delimited by CR, CRLF, LF, LFCR.
* @param {string} data
* @return {?string} the delimiter that was detected (or null on failure).
*/
-Dygraph.detectLineDelimiter = function(data) {
+export function detectLineDelimiter(data) {
for (var i = 0; i < data.length; i++) {
var code = data.charAt(i);
if (code === '\r') {
* @return {boolean} Whether containee is inside (or equal to) container.
* @private
*/
-Dygraph.isNodeContainedBy = function(containee, container) {
+export function isNodeContainedBy(containee, container) {
if (container === null || containee === null) {
return false;
}
return (containeeNode === container);
};
-
// This masks some numeric issues in older versions of Firefox,
// where 1.0/Math.pow(10,2) != Math.pow(10,-2).
/** @type {function(number,number):number} */
-Dygraph.pow = function(base, exp) {
+export function pow(base, exp) {
if (exp < 0) {
return 1.0 / Math.pow(base, -exp);
}
var RGBA_RE = /^rgba?\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})(?:,\s*([01](?:\.\d+)?))?\)$/;
/**
- * Helper for Dygraph.toRGB_ which parses strings of the form:
+ * Helper for toRGB_ which parses strings of the form:
* rgb(123, 45, 67)
* rgba(123, 45, 67, 0.5)
* @return parsed {r,g,b,a?} tuple or null.
* @return {{r:number,g:number,b:number,a:number?}} Parsed RGB tuple.
* @private
*/
-Dygraph.toRGB_ = function(colorStr) {
+export function toRGB_(colorStr) {
// Strategy: First try to parse colorStr directly. This is fast & avoids DOM
// manipulation. If that fails (e.g. for named colors like 'red'), then
// create a hidden DOM element and parse its computed color.
* optimization if you have one.
* @return {boolean} Whether the browser supports canvas.
*/
-Dygraph.isCanvasSupported = function(opt_canvasElement) {
+export function isCanvasSupported(opt_canvasElement) {
try {
var canvas = opt_canvasElement || document.createElement("canvas");
canvas.getContext("2d");
* @param {number=} opt_line_no The line number from which the string comes.
* @param {string=} opt_line The text of the line from which the string comes.
*/
-Dygraph.parseFloat_ = function(x, opt_line_no, opt_line) {
+export function parseFloat_(x, opt_line_no, opt_line) {
var val = parseFloat(x);
if (!isNaN(val)) return val;
return null;
};
-})();
+
+// Label constants for the labelsKMB and labelsKMG2 options.
+// (i.e. '100000' -> '100K')
+var KMB_LABELS = [ 'K', 'M', 'B', 'T', 'Q' ];
+var KMG2_BIG_LABELS = [ 'k', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y' ];
+var KMG2_SMALL_LABELS = [ 'm', 'u', 'n', 'p', 'f', 'a', 'z', 'y' ];
+
+/**
+ * @private
+ * Return a string version of a number. This respects the digitsAfterDecimal
+ * and maxNumberWidth options.
+ * @param {number} x The number to be formatted
+ * @param {Dygraph} opts An options view
+ */
+export function numberValueFormatter(x, opts) {
+ var sigFigs = opts('sigFigs');
+
+ if (sigFigs !== null) {
+ // User has opted for a fixed number of significant figures.
+ return floatFormat(x, sigFigs);
+ }
+
+ var digits = opts('digitsAfterDecimal');
+ var maxNumberWidth = opts('maxNumberWidth');
+
+ var kmb = opts('labelsKMB');
+ var kmg2 = opts('labelsKMG2');
+
+ var label;
+
+ // switch to scientific notation if we underflow or overflow fixed display.
+ if (x !== 0.0 &&
+ (Math.abs(x) >= Math.pow(10, maxNumberWidth) ||
+ Math.abs(x) < Math.pow(10, -digits))) {
+ label = x.toExponential(digits);
+ } else {
+ label = '' + round_(x, digits);
+ }
+
+ if (kmb || kmg2) {
+ var k;
+ var k_labels = [];
+ var m_labels = [];
+ if (kmb) {
+ k = 1000;
+ k_labels = KMB_LABELS;
+ }
+ if (kmg2) {
+ if (kmb) console.warn("Setting both labelsKMB and labelsKMG2. Pick one!");
+ k = 1024;
+ k_labels = KMG2_BIG_LABELS;
+ m_labels = KMG2_SMALL_LABELS;
+ }
+
+ var absx = Math.abs(x);
+ var n = pow(k, k_labels.length);
+ for (var j = k_labels.length - 1; j >= 0; j--, n /= k) {
+ if (absx >= n) {
+ label = round_(x / n, digits) + k_labels[j];
+ break;
+ }
+ }
+ if (kmg2) {
+ // TODO(danvk): clean up this logic. Why so different than kmb?
+ var x_parts = String(x.toExponential()).split('e-');
+ if (x_parts.length === 2 && x_parts[1] >= 3 && x_parts[1] <= 24) {
+ if (x_parts[1] % 3 > 0) {
+ label = round_(x_parts[0] /
+ pow(10, (x_parts[1] % 3)),
+ digits);
+ } else {
+ label = Number(x_parts[0]).toFixed(2);
+ }
+ label += m_labels[Math.floor(x_parts[1] / 3) - 1];
+ }
+ }
+ }
+
+ return label;
+};
+
+/**
+ * variant for use as an axisLabelFormatter.
+ * @private
+ */
+export function numberAxisLabelFormatter(x, granularity, opts) {
+ return numberValueFormatter.call(this, x, opts);
+};
+
+/**
+ * @type {!Array.<string>}
+ * @private
+ * @constant
+ */
+var SHORT_MONTH_NAMES_ = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
+
+
+/**
+ * Convert a JS date to a string appropriate to display on an axis that
+ * is displaying values at the stated granularity. This respects the
+ * labelsUTC option.
+ * @param {Date} date The date to format
+ * @param {number} granularity One of the Dygraph granularity constants
+ * @param {Dygraph} opts An options view
+ * @return {string} The date formatted as local time
+ * @private
+ */
+export function dateAxisLabelFormatter(date, granularity, opts) {
+ var utc = opts('labelsUTC');
+ var accessors = utc ? DateAccessorsUTC : DateAccessorsLocal;
+
+ var year = accessors.getFullYear(date),
+ month = accessors.getMonth(date),
+ day = accessors.getDate(date),
+ hours = accessors.getHours(date),
+ mins = accessors.getMinutes(date),
+ secs = accessors.getSeconds(date),
+ millis = accessors.getMilliseconds(date);
+
+ if (granularity >= DygraphTickers.Granularity.DECADAL) {
+ return '' + year;
+ } else if (granularity >= DygraphTickers.Granularity.MONTHLY) {
+ return SHORT_MONTH_NAMES_[month] + ' ' + year;
+ } else {
+ var frac = hours * 3600 + mins * 60 + secs + 1e-3 * millis;
+ if (frac === 0 || granularity >= DygraphTickers.Granularity.DAILY) {
+ // e.g. '21 Jan' (%d%b)
+ return zeropad(day) + ' ' + SHORT_MONTH_NAMES_[month];
+ } else if (granularity < DygraphTickers.Granularity.SECONDLY) {
+ // e.g. 40.310 (meaning 40 seconds and 310 milliseconds)
+ var str = "" + millis;
+ return zeropad(secs) + "." + ('000'+str).substring(str.length);
+ } else if (granularity > DygraphTickers.Granularity.MINUTELY) {
+ return hmsString_(hours, mins, secs, 0);
+ } else {
+ return hmsString_(hours, mins, secs, millis);
+ }
+ }
+};
+// alias in case anyone is referencing the old method.
+// Dygraph.dateAxisFormatter = Dygraph.dateAxisLabelFormatter;
+
+/**
+ * Return a string version of a JS date for a value label. This respects the
+ * labelsUTC option.
+ * @param {Date} date The date to be formatted
+ * @param {Dygraph} opts An options view
+ * @private
+ */
+export function dateValueFormatter(d, opts) {
+ return dateString_(d, opts('labelsUTC'));
+};
projects / dygraphs.git / blobdiff