Dygraph.LOG_SCALE = 10;
Dygraph.LN_TEN = Math.log(Dygraph.LOG_SCALE);
-/** @private */
+/**
+ * @private
+ * @param {number} x
+ * @return {number}
+ */
Dygraph.log10 = function(x) {
return Math.log(x) / Dygraph.LN_TEN;
};
Dygraph.DOT_DASH_LINE = [7, 2, 2, 2];
/**
- * @private
* Log an error on the JS console at the given severity.
- * @param { Integer } severity One of Dygraph.{DEBUG,INFO,WARNING,ERROR}
- * @param { String } The message to log.
+ * @param {number} severity One of Dygraph.{DEBUG,INFO,WARNING,ERROR}
+ * @param {string} message The message to log.
+ * @private
*/
Dygraph.log = function(severity, message) {
var st;
}
}
- if (typeof(console) != 'undefined') {
+ if (typeof(window.console) != 'undefined') {
+ // In older versions of Firefox, only console.log is defined.
+ var console = window.console;
+ var log = function(console, method, msg) {
+ if (method && typeof(method) == 'function') {
+ method.call(console, msg);
+ } else {
+ console.log(msg);
+ }
+ };
+
switch (severity) {
case Dygraph.DEBUG:
- console.debug('dygraphs: ' + message);
+ log(console, console.debug, 'dygraphs: ' + message);
break;
case Dygraph.INFO:
- console.info('dygraphs: ' + message);
+ log(console, console.info, 'dygraphs: ' + message);
break;
case Dygraph.WARNING:
- console.warn('dygraphs: ' + message);
+ log(console, console.warn, 'dygraphs: ' + message);
break;
case Dygraph.ERROR:
- console.error('dygraphs: ' + message);
+ log(console, console.error, 'dygraphs: ' + message);
break;
}
}
if (Dygraph.LOG_STACK_TRACES) {
- console.log(st.join('\n'));
+ window.console.log(st.join('\n'));
}
};
-/** @private */
+/**
+ * @param {string} message
+ * @private
+ */
Dygraph.info = function(message) {
Dygraph.log(Dygraph.INFO, message);
};
-/** @private */
+/**
+ * @param {string} message
+ * @private
+ */
Dygraph.prototype.info = Dygraph.info;
-/** @private */
+/**
+ * @param {string} message
+ * @private
+ */
Dygraph.warn = function(message) {
Dygraph.log(Dygraph.WARNING, message);
};
-/** @private */
+/**
+ * @param {string} message
+ * @private
+ */
Dygraph.prototype.warn = Dygraph.warn;
-/** @private */
+/**
+ * @param {string} message
+ */
Dygraph.error = function(message) {
Dygraph.log(Dygraph.ERROR, message);
};
-/** @private */
+/**
+ * @param {string} message
+ * @private
+ */
Dygraph.prototype.error = Dygraph.error;
/**
- * @private
* Return the 2d context for a dygraph canvas.
*
* This method is only exposed for the sake of replacing the function in
* var realContext = oldFunc(canvas);
* return new Proxy(realContext);
* };
+ * @param {!HTMLCanvasElement} canvas
+ * @return {!CanvasRenderingContext2D}
+ * @private
*/
Dygraph.getContext = function(canvas) {
- return canvas.getContext("2d");
+ return /** @type{!CanvasRenderingContext2D}*/(canvas.getContext("2d"));
};
/**
- * @private
* Add an event handler. This smooths a difference between IE and the rest of
* the world.
- * @param { DOM element } elem The element to add the event to.
- * @param { String } type The type of the event, e.g. 'click' or 'mousemove'.
- * @param { Function } fn The function to call on the event. The function takes
- * one parameter: the event object.
+ * @param { !Element } 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.addEvent = function addEvent(elem, type, fn) {
if (elem.addEventListener) {
};
/**
- * @private
* Add an event handler. This event handler is kept until the graph is
* destroyed with a call to graph.destroy().
*
- * @param { DOM element } elem The element to add the event to.
- * @param { String } type The type of the event, e.g. 'click' or 'mousemove'.
- * @param { Function } fn The function to call on the event. The function takes
- * one parameter: the event object.
+ * @param { !Element } 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.addEvent = function addEvent(elem, type, fn) {
+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. This smooths a difference between IE and the rest
+ * of the world.
+ * @param {!Element} 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
- * Remove an event handler. This smooths a difference between IE and the rest of
- * the world.
- * @param { DOM element } elem The element to add the event to.
- * @param { String } type The type of the event, e.g. 'click' or 'mousemove'.
- * @param { Function } fn The function to call on the event. The function takes
- * one parameter: the event object.
*/
-Dygraph.removeEvent = function addEvent(elem, type, fn) {
+Dygraph.removeEvent = function(elem, type, fn) {
if (elem.removeEventListener) {
elem.removeEventListener(type, fn, false);
} else {
}
};
+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_ = [];
+}
+
/**
- * @private
* Cancels further processing of an event. This is useful to prevent default
* browser actions, e.g. highlighting text on a double-click.
* Based on the article at
* http://www.switchonthecode.com/tutorials/javascript-tutorial-the-scroll-wheel
- * @param { Event } e The event whose normal behavior should be canceled.
+ * @param { !Event } e The event whose normal behavior should be canceled.
+ * @private
*/
Dygraph.cancelEvent = function(e) {
e = e ? e : window.event;
* Convert hsv values to an rgb(r,g,b) string. Taken from MochiKit.Color. This
* is used to generate default series colors which are evenly spaced on the
* color wheel.
- * @param { Number } hue Range is 0.0-1.0.
- * @param { Number } saturation Range is 0.0-1.0.
- * @param { Number } value Range is 0.0-1.0.
- * @return { String } "rgb(r,g,b)" where r, g and b range from 0-255.
+ * @param { number } hue Range is 0.0-1.0.
+ * @param { number } saturation Range is 0.0-1.0.
+ * @param { number } value Range is 0.0-1.0.
+ * @return { string } "rgb(r,g,b)" where r, g and b range from 0-255.
* @private
*/
Dygraph.hsvToRGB = function (hue, saturation, value) {
/**
* Find the x-coordinate of the supplied object relative to the left side
* of the page.
+ * TODO(danvk): change obj type from Node -> !Node
+ * @param {Node} obj
+ * @return {number}
* @private
*/
Dygraph.findPosX = function(obj) {
if(obj.offsetParent) {
var copyObj = obj;
while(1) {
+ // NOTE: the if statement here is for IE8.
+ var borderLeft = "0";
+ if (window.getComputedStyle) {
+ borderLeft = window.getComputedStyle(copyObj, null).borderLeft || "0";
+ }
+ curleft += parseInt(borderLeft, 10) ;
curleft += copyObj.offsetLeft;
if(!copyObj.offsetParent) {
break;
/**
* Find the y-coordinate of the supplied object relative to the top of the
* page.
+ * TODO(danvk): change obj type from Node -> !Node
+ * TODO(danvk): consolidate with findPosX and return an {x, y} object.
+ * @param {Node} obj
+ * @return {number}
* @private
*/
Dygraph.findPosY = function(obj) {
if(obj.offsetParent) {
var copyObj = obj;
while(1) {
+ // NOTE: the if statement here is for IE8.
+ var borderTop = "0";
+ if (window.getComputedStyle) {
+ borderTop = window.getComputedStyle(copyObj, null).borderTop || "0";
+ }
+ curtop += parseInt(borderTop, 10) ;
curtop += copyObj.offsetTop;
if(!copyObj.offsetParent) {
break;
};
/**
- * @private
* Returns the x-coordinate of the event in a coordinate system where the
* top-left corner of the page (not the window) is (0,0).
* Taken from MochiKit.Signal
+ * @param {!Event} e
+ * @return {number}
+ * @private
*/
Dygraph.pageX = function(e) {
if (e.pageX) {
return (!e.pageX || e.pageX < 0) ? 0 : e.pageX;
} else {
- var de = document;
+ var de = document.documentElement;
var b = document.body;
return e.clientX +
(de.scrollLeft || b.scrollLeft) -
};
/**
- * @private
* Returns the y-coordinate of the event in a coordinate system where the
* top-left corner of the page (not the window) is (0,0).
* Taken from MochiKit.Signal
+ * @param {!Event} e
+ * @return {number}
+ * @private
*/
Dygraph.pageY = function(e) {
if (e.pageY) {
return (!e.pageY || e.pageY < 0) ? 0 : e.pageY;
} else {
- var de = document;
+ var de = document.documentElement;
var b = document.body;
return e.clientY +
(de.scrollTop || b.scrollTop) -
};
/**
+ * This returns true unless the parameter is 0, null, undefined or NaN.
+ * TODO(danvk): rename this function to something like 'isNonZeroNan'.
+ *
+ * @param {number} x The number to consider.
+ * @return {boolean} Whether the number is zero or NaN.
* @private
- * @param { Number } x The number to consider.
- * @return { Boolean } Whether the number is zero or NaN.
*/
-// TODO(danvk): rename this function to something like 'isNonZeroNan'.
-// TODO(danvk): determine when else this returns false (e.g. for undefined or null)
Dygraph.isOK = function(x) {
- return x && !isNaN(x);
+ return !!x && !isNaN(x);
};
/**
+ * @param { {x:?number,y:?number,yval:?number} } p The point to consider, valid
+ * points are {x, y} objects
+ * @param { boolean } allowNaNY Treat point with y=NaN as valid
+ * @return { boolean } Whether the point has numeric x and y.
* @private
- * @param { Object } p The point to consider, valid points are {x, y} objects
- * @param { Boolean } allowNaNY Treat point with y=NaN as valid
- * @return { Boolean } Whether the point has numeric x and y.
*/
Dygraph.isValidPoint = function(p, allowNaNY) {
- if (!p) return false; // null or undefined object
- if (p.yval === null) return false; // missing point
+ 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;
if (p.y === null || p.y === undefined) return false;
if (isNaN(p.x) || (!allowNaNY && isNaN(p.y))) return false;
* 10^-6, e.g. '0.00001' instead of '1e-5'. See tests/number-format.html for
* output examples.
*
- * @param {Number} x The number to format
- * @param {Number} opt_precision The precision to use, default 2.
- * @return {String} A string formatted like %g in printf. The max generated
+ * @param {number} x The number to format
+ * @param {number=} opt_precision The precision to use, default 2.
+ * @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) {
};
/**
- * @private
* Converts '9' to '09' (useful for dates)
+ * @param {number} x
+ * @return {string}
+ * @private
*/
Dygraph.zeropad = function(x) {
if (x < 10) return "0" + x; else return "" + x;
/**
* Return a string version of the hours, minutes and seconds portion of a date.
- * @param {Number} date The JavaScript date (ms since epoch)
- * @return {String} A time of the form "HH:MM:SS"
+ *
+ * @param {number} date The JavaScript date (ms since epoch)
+ * @return {string} A time of the form "HH:MM:SS"
* @private
*/
Dygraph.hmsString_ = function(date) {
/**
* Round a number to the specified number of digits past the decimal point.
- * @param {Number} num The number to round
- * @param {Number} places The number of decimals to which to round
- * @return {Number} The rounded number
+ * @param {number} num The number to round
+ * @param {number} places The number of decimals to which to round
+ * @return {number} The rounded number
* @private
*/
Dygraph.round_ = function(num, places) {
};
/**
- * @private
* Implementation of binary search over an array.
* Currently does not work when val is outside the range of arry's values.
- * @param { Integer } val the value to search for
- * @param { Integer[] } arry is the value over which to search
- * @param { Integer } abs If abs > 0, find the lowest entry greater than val
- * If abs < 0, find the highest entry less than val.
- * if abs == 0, find the entry that equals val.
- * @param { Integer } [low] The first index in arry to consider (optional)
- * @param { Integer } [high] The last index in arry to consider (optional)
+ * @param {number} val the value to search for
+ * @param {Array.<number>} arry is the value over which to search
+ * @param {number} abs If abs > 0, find the lowest entry greater than val
+ * If abs < 0, find the highest entry less than val.
+ * If abs == 0, find the entry that equals val.
+ * @param {number=} low The first index in arry to consider (optional)
+ * @param {number=} high The last index in arry to consider (optional)
+ * @return {number} Index of the element, or -1 if it isn't found.
+ * @private
*/
Dygraph.binarySearch = function(val, arry, abs, low, high) {
if (low === null || low === undefined ||
};
var mid = parseInt((low + high) / 2, 10);
var element = arry[mid];
+ var idx;
if (element == val) {
return mid;
- }
-
- var idx;
- if (element > val) {
+ } else if (element > val) {
if (abs > 0) {
// Accept if element > val, but also if prior element < val.
idx = mid - 1;
}
}
return Dygraph.binarySearch(val, arry, abs, low, mid - 1);
- }
- if (element < val) {
+ } else if (element < val) {
if (abs < 0) {
// Accept if element < val, but also if prior element > val.
idx = mid + 1;
}
return Dygraph.binarySearch(val, arry, abs, mid + 1, high);
}
+ return -1; // can't actually happen, but makes closure compiler happy
};
/**
- * @private
* Parses a date, returning the number of milliseconds since epoch. This can be
* passed in as an xValueParser in the Dygraph constructor.
* TODO(danvk): enumerate formats that this understands.
- * @param {String} A date in YYYYMMDD format.
- * @return {Number} Milliseconds since epoch.
+ *
+ * @param {string} dateStr A date in a variety of possible string formats.
+ * @return {number} Milliseconds since epoch.
+ * @private
*/
Dygraph.dateParser = function(dateStr) {
var dateStrSlashed;
};
/**
- * @private
* This is identical to JavaScript's built-in Date.parse() method, except that
* it doesn't get replaced with an incompatible method by aggressive JS
* libraries like MooTools or Joomla.
- * @param { String } str The date string, e.g. "2011/05/06"
- * @return { Integer } millis since epoch
+ * @param {string} str The date string, e.g. "2011/05/06"
+ * @return {number} millis since epoch
+ * @private
*/
Dygraph.dateStrToMillis = function(str) {
return new Date(str).getTime();
/**
* Copies all the properties from o to self.
*
- * @private
+ * @param {!Object} self
+ * @param {!Object} o
+ * @return {!Object}
*/
-Dygraph.update = function (self, o) {
+Dygraph.update = function(self, o) {
if (typeof(o) != 'undefined' && o !== null) {
for (var k in o) {
if (o.hasOwnProperty(k)) {
/**
* Copies all the properties from o to self.
*
+ * @param {!Object} self
+ * @param {!Object} o
+ * @return {!Object}
* @private
*/
Dygraph.updateDeep = function (self, o) {
};
/**
+ * @param {Object} o
+ * @return {boolean}
* @private
*/
-Dygraph.isArrayLike = function (o) {
+Dygraph.isArrayLike = function(o) {
var typ = typeof(o);
if (
(typ != 'object' && !(typ == 'function' &&
};
/**
+ * @param {Object} o
+ * @return {boolean}
* @private
*/
Dygraph.isDateLike = function (o) {
/**
* Note: this only seems to work for arrays.
+ * @param {!Array} o
+ * @return {!Array}
* @private
*/
Dygraph.clone = function(o) {
};
/**
- * @private
* Create a new canvas element. This is more complex than a simple
* document.createElement("canvas") because of IE and excanvas.
+ *
+ * @return {!HTMLCanvasElement}
+ * @private
*/
Dygraph.createCanvas = function() {
var canvas = document.createElement("canvas");
var isIE = (/MSIE/.test(navigator.userAgent) && !window.opera);
if (isIE && (typeof(G_vmlCanvasManager) != 'undefined')) {
- canvas = G_vmlCanvasManager.initElement(canvas);
+ canvas = G_vmlCanvasManager.initElement(
+ /**@type{!HTMLCanvasElement}*/(canvas));
}
return canvas;
};
/**
- * @private
* 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 {number} length
+ * @param {function(!Array,?):boolean=} predicate
+ * @constructor
+ */
Dygraph.Iterator = function(array, start, length, predicate) {
start = start || 0;
length = length || array.length;
this.next(); // ignoring result.
};
+/**
+ * @return {Object}
+ */
Dygraph.Iterator.prototype.next = function() {
if (!this.hasNext) {
return null;
};
/**
- * @private
- * Returns a new iterator over array, between indexes start and
+ * Returns a new iterator over array, between indexes start and
* start + length, and only returns entries that pass the accept function
*
- * @param array the array to iterate over.
- * @param start the first index to iterate over, 0 if absent.
- * @param length the number of elements in the array to iterate over.
- * This, along with start, defines a slice of the array, and so length
- * doesn't imply the number of elements in the iterator when accept
- * doesn't always accept all values. array.length when absent.
- * @param predicate a function that takes parameters array and idx, which
- * returns true when the element should be returned. If omitted, all
- * elements are accepted.
+ * @param {!Array} array the array to iterate over.
+ * @param {number} start the first index to iterate over, 0 if absent.
+ * @param {number} length the number of elements in the array to iterate over.
+ * This, along with start, defines a slice of the array, and so length
+ * doesn't imply the number of elements in the iterator when accept doesn't
+ * always accept all values. array.length when absent.
+ * @param {function(?):boolean=} opt_predicate a function that takes
+ * parameters array and idx, which returns true when the element should be
+ * returned. If omitted, all elements are accepted.
+ * @private
*/
-Dygraph.createIterator = function(array, start, length, predicate) {
- return new Dygraph.Iterator(array, start, length, predicate);
+Dygraph.createIterator = function(array, start, length, opt_predicate) {
+ return new Dygraph.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() {
+ return window.requestAnimationFrame ||
+ window.webkitRequestAnimationFrame ||
+ window.mozRequestAnimationFrame ||
+ window.oRequestAnimationFrame ||
+ window.msRequestAnimationFrame ||
+ function (callback) {
+ window.setTimeout(callback, 1000 / 60);
+ };
+})();
+
/**
- * @private
- * Call a function N times at a given interval, then call a cleanup function
- * once. repeat_fn is called once immediately, then (times - 1) times
- * asynchronously. If times=1, then cleanup_fn() is also called synchronously.
- * @param repeat_fn {Function} Called repeatedly -- takes the number of calls
- * (from 0 to times-1) as an argument.
- * @param times {number} The number of times to call repeat_fn
- * @param every_ms {number} Milliseconds between calls
- * @param cleanup_fn {Function} A function to call after all repeat_fn calls.
+ * Call a function at most maxFrames times at an attempted interval of
+ * framePeriodInMillis, then call a cleanup function once. repeatFn is called
+ * once immediately, then at most (maxFrames - 1) times asynchronously. If
+ * maxFrames==1, then cleanup_fn() is also called synchronously. This function
+ * is used to sequence animation.
+ * @param {function(number)} repeatFn Called repeatedly -- takes the frame
+ * number (from 0 to maxFrames-1) as an argument.
+ * @param {number} maxFrames The max number of times to call repeatFn
+ * @param {number} framePeriodInMillis Max requested time between frames.
+ * @param {function()} cleanupFn A function to call after all repeatFn calls.
* @private
*/
-Dygraph.repeatAndCleanup = function(repeat_fn, times, every_ms, cleanup_fn) {
- var count = 0;
- var start_time = new Date().getTime();
- repeat_fn(count);
- if (times == 1) {
- cleanup_fn();
+Dygraph.repeatAndCleanup = function(repeatFn, maxFrames, framePeriodInMillis,
+ cleanupFn) {
+ var frameNumber = 0;
+ var previousFrameNumber;
+ var startTime = new Date().getTime();
+ repeatFn(frameNumber);
+ if (maxFrames == 1) {
+ cleanupFn();
return;
}
+ var maxFrameArg = maxFrames - 1;
(function loop() {
- if (count >= times) return;
- var target_time = start_time + (1 + count) * every_ms;
- setTimeout(function() {
- count++;
- repeat_fn(count);
- if (count >= times - 1) {
- cleanup_fn();
+ if (frameNumber >= maxFrames) return;
+ Dygraph.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();
+ var delayInMillis = currentTime - startTime;
+ previousFrameNumber = frameNumber;
+ frameNumber = Math.floor(delayInMillis / framePeriodInMillis);
+ var frameDelta = frameNumber - previousFrameNumber;
+ // If we predict that the subsequent repeatFn call will overshoot our
+ // total frame target, so our last call will cause a stutter, then jump to
+ // the last call immediately. If we're going to cause a stutter, better
+ // to do it faster than slower.
+ var predictOvershootStutter = (frameNumber + frameDelta) > maxFrameArg;
+ if (predictOvershootStutter || (frameNumber >= maxFrameArg)) {
+ repeatFn(maxFrameArg); // Ensure final call with maxFrameArg.
+ cleanupFn();
} else {
+ if (frameDelta !== 0) { // Don't call repeatFn with duplicate frames.
+ repeatFn(frameNumber);
+ }
loop();
}
- }, target_time - new Date().getTime());
- // TODO(danvk): adjust every_ms to produce evenly-timed function calls.
+ });
})();
};
/**
- * @private
* This function will scan the option list and determine if they
* require us to recalculate the pixel positions of each point.
- * @param { List } a list of options to check.
- * @return { Boolean } true if the graph needs new points else false.
+ * @param {!Array.<string>} labels a list of options to check.
+ * @param {!Object} attrs
+ * @return {boolean} true if the graph needs new points else false.
+ * @private
*/
Dygraph.isPixelChangingOptionList = function(labels, attrs) {
// A whitelist of options that do not change pixel positions.
/**
* Compares two arrays to see if they are equal. If either parameter is not an
- * array it will return false. Does a shallow compare
+ * array it will return false. Does a shallow compare
* Dygraph.compareArrays([[1,2], [3, 4]], [[1,2], [3,4]]) === false.
- * @param array1 first array
- * @param array2 second array
- * @return True if both parameters are arrays, and contents are equal.
+ * @param {!Array.<T>} array1 first array
+ * @param {!Array.<T>} array2 second array
+ * @return {boolean} True if both parameters are arrays, and contents are equal.
+ * @template T
*/
Dygraph.compareArrays = function(array1, array2) {
if (!Dygraph.isArrayLike(array1) || !Dygraph.isArrayLike(array2)) {
};
/**
- * ctx: the canvas context
- * sides: the number of sides in the shape.
- * radius: the radius of the image.
- * cx: center x coordate
- * cy: center y coordinate
- * rotationRadians: the shift of the initial angle, in radians.
- * delta: the angle shift for each line. If missing, creates a regular
- * polygon.
+ * @param {!CanvasRenderingContext2D} ctx the canvas context
+ * @param {number} sides the number of sides in the shape.
+ * @param {number} radius the radius of the image.
+ * @param {number} cx center x coordate
+ * @param {number} cy center y coordinate
+ * @param {number=} rotationRadians the shift of the initial angle, in radians.
+ * @param {number=} delta the angle shift for each line. If missing, creates a
+ * regular polygon.
+ * @private
*/
Dygraph.regularShape_ = function(
ctx, sides, radius, cx, cy, rotationRadians, delta) {
- rotationRadians = rotationRadians ? rotationRadians : 0;
- delta = delta ? delta : Math.PI * 2 / sides;
+ rotationRadians = rotationRadians || 0;
+ delta = delta || Math.PI * 2 / sides;
ctx.beginPath();
- var first = true;
var initialAngle = rotationRadians;
var angle = initialAngle;
var computeCoordinates = function() {
var x = cx + (Math.sin(angle) * radius);
var y = cy + (-Math.cos(angle) * radius);
- return [x, y];
+ return [x, y];
};
var initialCoordinates = computeCoordinates();
ctx.stroke();
};
+/**
+ * TODO(danvk): be more specific on the return type.
+ * @param {number} sides
+ * @param {number=} rotationRadians
+ * @param {number=} delta
+ * @return {Function}
+ * @private
+ */
Dygraph.shapeFunction_ = function(sides, rotationRadians, delta) {
return function(g, name, ctx, cx, cy, color, radius) {
ctx.strokeStyle = color;
};
};
-Dygraph.DrawPolygon_ = function(sides, rotationRadians, ctx, cx, cy, color, radius, delta) {
- new Dygraph.RegularShape_(sides, rotationRadians, delta).draw(ctx, cx, cy, radius);
-};
-
Dygraph.Circles = {
DEFAULT : function(g, name, ctx, canvasx, canvasy, color, radius) {
ctx.beginPath();
* };
* window.addEventListener('mouseup', mouseUpHandler);
* };
- *
*
* @constructor
*/
Dygraph.IFrameTarp = function() {
+ /** @type {Array.<!HTMLDivElement>} */
this.tarps = [];
};
/**
* Determine whether |data| is delimited by CR, CRLF, LF, LFCR.
* @param {string} data
- * @return {string|null} the delimiter that was detected.
+ * @return {?string} the delimiter that was detected (or null on failure).
*/
Dygraph.detectLineDelimiter = function(data) {
for (var i = 0; i < data.length; i++) {
return null;
};
+
+/**
+ * Is one node contained by another?
+ * @param {Node} containee The contained node.
+ * @param {Node} container The container node.
+ * @return {boolean} Whether containee is inside (or equal to) container.
+ * @private
+ */
+Dygraph.isNodeContainedBy = function(containee, container) {
+ if (container === null || containee === null) {
+ return false;
+ }
+ var containeeNode = /** @type {Node} */ (containee);
+ while (containeeNode && containeeNode !== container) {
+ containeeNode = containeeNode.parentNode;
+ }
+ 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) {
+ if (exp < 0) {
+ return 1.0 / Math.pow(base, -exp);
+ }
+ return Math.pow(base, exp);
+};
+
+// For Dygraph.setDateSameTZ, below.
+Dygraph.dateSetters = {
+ ms: Date.prototype.setMilliseconds,
+ s: Date.prototype.setSeconds,
+ m: Date.prototype.setMinutes,
+ h: Date.prototype.setHours
+};
+
+/**
+ * This is like calling d.setSeconds(), d.setMinutes(), etc, except that it
+ * adjusts for time zone changes to keep the date/time parts consistent.
+ *
+ * For example, d.getSeconds(), d.getMinutes() and d.getHours() will all be
+ * the same before/after you call setDateSameTZ(d, {ms: 0}). The same is not
+ * true if you call d.setMilliseconds(0).
+ *
+ * @type {function(!Date, Object.<number>)}
+ */
+Dygraph.setDateSameTZ = function(d, parts) {
+ var tz = d.getTimezoneOffset();
+ for (var k in parts) {
+ if (!parts.hasOwnProperty(k)) continue;
+ var setter = Dygraph.dateSetters[k];
+ if (!setter) throw "Invalid setter: " + k;
+ setter.call(d, parts[k]);
+ if (d.getTimezoneOffset() != tz) {
+ d.setTime(d.getTime() + (tz - d.getTimezoneOffset()) * 60 * 1000);
+ }
+ }
+};
projects / dygraphs.git / blobdiff