* search) and generic DOM-manipulation functions.
*/
-/*jshint globalstrict: true */
-/*global Dygraph:false, G_vmlCanvasManager:false, Node:false, printStackTrace: false */
+(function() {
+
+/*global Dygraph:false, Node:false */
"use strict";
Dygraph.LOG_SCALE = 10;
return Math.log(x) / Dygraph.LN_TEN;
};
-// Various logging levels.
-Dygraph.DEBUG = 1;
-Dygraph.INFO = 2;
-Dygraph.WARNING = 3;
-Dygraph.ERROR = 3;
-
-// Set this to log stack traces on warnings, etc.
-// This requires stacktrace.js, which is up to you to provide.
-// A copy can be found in the dygraphs repo, or at
-// https://github.com/eriwen/javascript-stacktrace
-Dygraph.LOG_STACK_TRACES = false;
-
/** A dotted line stroke pattern. */
Dygraph.DOTTED_LINE = [2, 2];
/** A dashed line stroke pattern. */
Dygraph.DOT_DASH_LINE = [7, 2, 2, 2];
/**
- * Log an error on the JS console at the given severity.
- * @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(printStackTrace) != 'undefined') {
- try {
- // Remove uninteresting bits: logging functions and paths.
- st = printStackTrace({guess:false});
- while (st[0].indexOf("stacktrace") != -1) {
- st.splice(0, 1);
- }
-
- st.splice(0, 2);
- for (var i = 0; i < st.length; i++) {
- st[i] = st[i].replace(/\([^)]*\/(.*)\)/, '@$1')
- .replace(/\@.*\/([^\/]*)/, '@$1')
- .replace('[object Object].', '');
- }
- var top_msg = st.splice(0, 1)[0];
- message += ' (' + top_msg.replace(/^.*@ ?/, '') + ')';
- } catch(e) {
- // Oh well, it was worth a shot!
- }
- }
-
- 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:
- log(console, console.debug, 'dygraphs: ' + message);
- break;
- case Dygraph.INFO:
- log(console, console.info, 'dygraphs: ' + message);
- break;
- case Dygraph.WARNING:
- log(console, console.warn, 'dygraphs: ' + message);
- break;
- case Dygraph.ERROR:
- log(console, console.error, 'dygraphs: ' + message);
- break;
- }
- }
-
- if (Dygraph.LOG_STACK_TRACES) {
- window.console.log(st.join('\n'));
- }
-};
-
-/**
- * @param {string} message
- * @private
- */
-Dygraph.info = function(message) {
- Dygraph.log(Dygraph.INFO, message);
-};
-/**
- * @param {string} message
- * @private
- */
-Dygraph.prototype.info = Dygraph.info;
-
-/**
- * @param {string} message
- * @private
- */
-Dygraph.warn = function(message) {
- Dygraph.log(Dygraph.WARNING, message);
-};
-/**
- * @param {string} message
- * @private
- */
-Dygraph.prototype.warn = Dygraph.warn;
-
-/**
- * @param {string} message
- */
-Dygraph.error = function(message) {
- Dygraph.log(Dygraph.ERROR, message);
-};
-/**
- * @param {string} message
- * @private
- */
-Dygraph.prototype.error = Dygraph.error;
-
-/**
* Return the 2d context for a dygraph canvas.
*
* This method is only exposed for the sake of replacing the function in
};
/**
- * Add 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
+ * Add an event handler.
+ * @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.addEvent = function addEvent(elem, type, fn) {
- if (elem.addEventListener) {
- elem.addEventListener(type, fn, false);
- } else {
- elem[type+fn] = function(){fn(window.event);};
- elem.attachEvent('on'+type, 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 { !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
+ * @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.addEvent = function(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.
+ * 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) {
- if (elem.removeEventListener) {
- elem.removeEventListener(type, fn, false);
- } else {
- try {
- elem.detachEvent('on'+type, elem[type+fn]);
- } catch(e) {
- // We only detach event listeners on a "best effort" basis in IE. See:
- // http://stackoverflow.com/questions/2553632/detachevent-not-working-with-named-inline-functions
+ 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);
}
- elem[type+fn] = null;
}
+
+ this.registeredEvents_ = [];
};
/**
* 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) {
// ... and modifications to support scrolling divs.
/**
- * Find the x-coordinate of the supplied object relative to the left side
- * of the page.
+ * Find the coordinates of an object relative to the top left of the page.
+ *
* TODO(danvk): change obj type from Node -> !Node
* @param {Node} obj
- * @return {number}
+ * @return {{x:number,y:number}}
* @private
*/
-Dygraph.findPosX = function(obj) {
- var curleft = 0;
- if(obj.offsetParent) {
+Dygraph.findPos = function(obj) {
+ var curleft = 0, curtop = 0;
+ 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";
- }
+ while (1) {
+ var borderLeft = "0", borderTop = "0";
+ var computedStyle = window.getComputedStyle(copyObj, null);
+ borderLeft = computedStyle.borderLeft || "0";
+ borderTop = computedStyle.borderTop || "0";
curleft += parseInt(borderLeft, 10) ;
- curleft += copyObj.offsetLeft;
- if(!copyObj.offsetParent) {
- break;
- }
- copyObj = copyObj.offsetParent;
- }
- } else if(obj.x) {
- curleft += obj.x;
- }
- // This handles the case where the object is inside a scrolled div.
- while(obj && obj != document.body) {
- curleft -= obj.scrollLeft;
- obj = obj.parentNode;
- }
- return curleft;
-};
-
-/**
- * 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) {
- var curtop = 0;
- 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) ;
+ curleft += copyObj.offsetLeft;
curtop += copyObj.offsetTop;
- if(!copyObj.offsetParent) {
+ if (!copyObj.offsetParent) {
break;
}
copyObj = copyObj.offsetParent;
}
- } else if(obj.y) {
- curtop += obj.y;
+ } else {
+ // TODO(danvk): why would obj ever have these properties?
+ if (obj.x) curleft += obj.x;
+ if (obj.y) curtop += obj.y;
}
+
// This handles the case where the object is inside a scrolled div.
- while(obj && obj != document.body) {
+ while (obj && obj != document.body) {
+ curleft -= obj.scrollLeft;
curtop -= obj.scrollTop;
obj = obj.parentNode;
}
- return curtop;
+ return {x: curleft, y: curtop};
};
/**
};
/**
+ * Converts page the x-coordinate of the event to pixel x-coordinates on the
+ * canvas (i.e. DOM Coords).
+ * @param {!Event} e Drag event.
+ * @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;
+};
+
+/**
+ * Converts page the y-coordinate of the event to pixel y-coordinates on the
+ * canvas (i.e. DOM Coords).
+ * @param {!Event} e Drag event.
+ * @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;
+};
+
+/**
* This returns true unless the parameter is 0, null, undefined or NaN.
* TODO(danvk): rename this function to something like 'isNonZeroNan'.
*
};
/**
- * @param { {x:?number,y:?number,yval:?number} } p The point to consider, valid
+ * @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.
+ * @param {boolean=} opt_allowNaNY Treat point with y=NaN as valid
+ * @return {boolean} Whether the point has numeric x and y.
* @private
*/
-Dygraph.isValidPoint = function(p, allowNaNY) {
+Dygraph.isValidPoint = function(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;
if (p.y === null || p.y === undefined) return false;
- if (isNaN(p.x) || (!allowNaNY && isNaN(p.y))) return false;
+ if (isNaN(p.x) || (!opt_allowNaNY && isNaN(p.y))) return false;
return true;
};
};
/**
+ * Date accessors to get the parts of a calendar date (year, month,
+ * 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();},
+ makeDate: function(y, m, d, hh, mm, ss, ms) {
+ return new Date(y, m, d, hh, mm, ss, ms);
+ }
+};
+
+/**
+ * Date accessors to get the parts of a calendar date (year, month,
+ * 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();},
+ makeDate: function(y, m, d, hh, mm, ss, ms) {
+ return new Date(Date.UTC(y, m, d, hh, mm, ss, ms));
+ }
+};
+
+/**
* 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} hh The hours (from 0-23)
+ * @param {number} mm The minutes (from 0-59)
+ * @param {number} ss The seconds (from 0-59)
+ * @return {string} A time of the form "HH:MM" or "HH:MM:SS"
* @private
*/
-Dygraph.hmsString_ = function(date) {
+Dygraph.hmsString_ = function(hh, mm, ss) {
var zeropad = Dygraph.zeropad;
- var d = new Date(date);
- if (d.getSeconds()) {
- return zeropad(d.getHours()) + ":" +
- zeropad(d.getMinutes()) + ":" +
- zeropad(d.getSeconds());
- } else {
- return zeropad(d.getHours()) + ":" + zeropad(d.getMinutes());
+ var ret = zeropad(hh) + ":" + zeropad(mm);
+ if (ss) {
+ ret += ":" + zeropad(ss);
+ }
+ 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
+ * @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;
+ var date = new Date(time);
+ var y = accessors.getFullYear(date);
+ var m = accessors.getMonth(date);
+ var d = accessors.getDate(date);
+ var hh = accessors.getHours(date);
+ var mm = accessors.getMinutes(date);
+ var ss = accessors.getSeconds(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 ret = year + "/" + month + "/" + day;
+ if (frac) {
+ ret += " " + Dygraph.hmsString_(hh, mm, ss);
}
+ return ret;
};
/**
}
if (!d || isNaN(d)) {
- Dygraph.error("Couldn't parse " + dateStr + " as a date");
+ console.error("Couldn't parse " + dateStr + " as a date");
}
return d;
};
};
/**
- * @param {Object} o
+ * @param {*} o
* @return {boolean}
* @private
*/
};
/**
- * Create a new canvas element. This is more complex than a simple
- * document.createElement("canvas") because of IE and excanvas.
+ * Create a new canvas element.
*
* @return {!HTMLCanvasElement}
* @private
*/
Dygraph.createCanvas = function() {
- var canvas = document.createElement("canvas");
+ return document.createElement('canvas');
+};
- var isIE = (/MSIE/.test(navigator.userAgent) && !window.opera);
- if (isIE && (typeof(G_vmlCanvasManager) != 'undefined')) {
- canvas = G_vmlCanvasManager.initElement(
- /**@type{!HTMLCanvasElement}*/(canvas));
+/**
+ * Returns the context's pixel ratio, which is the ratio between the device
+ * pixel ratio and the backing store ratio. Typically this is 1 for conventional
+ * displays, and > 1 for HiDPI displays (such as the Retina MBP).
+ * See http://www.html5rocks.com/en/tutorials/canvas/hidpi/ for more details.
+ *
+ * @param {!CanvasRenderingContext2D} context The canvas's 2d context.
+ * @return {number} The ratio of the device pixel ratio and the backing store
+ * ratio for the specified context.
+ */
+Dygraph.getContextPixelRatio = function(context) {
+ try {
+ var devicePixelRatio = window.devicePixelRatio;
+ var backingStoreRatio = context.webkitBackingStorePixelRatio ||
+ context.mozBackingStorePixelRatio ||
+ context.msBackingStorePixelRatio ||
+ context.oBackingStorePixelRatio ||
+ context.backingStorePixelRatio || 1;
+ if (devicePixelRatio !== undefined) {
+ return devicePixelRatio / backingStoreRatio;
+ } else {
+ // At least devicePixelRatio must be defined for this ratio to make sense.
+ // We default backingStoreRatio to 1: this does not exist on some browsers
+ // (i.e. desktop Chrome).
+ return 1;
+ }
+ } catch (e) {
+ return 1;
}
-
- return canvas;
};
/**
})();
};
+// A whitelist of options that do not change pixel positions.
+var pixelSafeOptions = {
+ 'annotationClickHandler': true,
+ 'annotationDblClickHandler': true,
+ 'annotationMouseOutHandler': true,
+ 'annotationMouseOverHandler': true,
+ 'axisLabelColor': true,
+ 'axisLineColor': true,
+ 'axisLineWidth': true,
+ 'clickCallback': true,
+ 'drawCallback': true,
+ 'drawHighlightPointCallback': true,
+ 'drawPoints': true,
+ 'drawPointCallback': true,
+ 'drawGrid': true,
+ 'fillAlpha': true,
+ 'gridLineColor': true,
+ 'gridLineWidth': true,
+ 'hideOverlayOnMouseOut': true,
+ 'highlightCallback': true,
+ 'highlightCircleSize': true,
+ 'interactionModel': true,
+ 'isZoomedIgnoreProgrammaticZoom': true,
+ 'labelsDiv': true,
+ 'labelsDivStyles': true,
+ 'labelsDivWidth': true,
+ 'labelsKMB': true,
+ 'labelsKMG2': true,
+ 'labelsSeparateLines': true,
+ 'labelsShowZeroValues': true,
+ 'legend': true,
+ 'panEdgeFraction': true,
+ 'pixelsPerYLabel': true,
+ 'pointClickCallback': true,
+ 'pointSize': true,
+ 'rangeSelectorPlotFillColor': true,
+ 'rangeSelectorPlotStrokeColor': true,
+ 'showLabelsOnHighlight': true,
+ 'showRoller': true,
+ 'strokeWidth': true,
+ 'underlayCallback': true,
+ 'unhighlightCallback': true,
+ 'zoomCallback': true
+};
+
/**
* This function will scan the option list and determine if they
* require us to recalculate the pixel positions of each point.
+ * TODO: move this into dygraph-options.js
* @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.
- var pixelSafeOptions = {
- 'annotationClickHandler': true,
- 'annotationDblClickHandler': true,
- 'annotationMouseOutHandler': true,
- 'annotationMouseOverHandler': true,
- 'axisLabelColor': true,
- 'axisLineColor': true,
- 'axisLineWidth': true,
- 'clickCallback': true,
- 'digitsAfterDecimal': true,
- 'drawCallback': true,
- 'drawHighlightPointCallback': true,
- 'drawPoints': true,
- 'drawPointCallback': true,
- 'drawXGrid': true,
- 'drawYGrid': true,
- 'fillAlpha': true,
- 'gridLineColor': true,
- 'gridLineWidth': true,
- 'hideOverlayOnMouseOut': true,
- 'highlightCallback': true,
- 'highlightCircleSize': true,
- 'interactionModel': true,
- 'isZoomedIgnoreProgrammaticZoom': true,
- 'labelsDiv': true,
- 'labelsDivStyles': true,
- 'labelsDivWidth': true,
- 'labelsKMB': true,
- 'labelsKMG2': true,
- 'labelsSeparateLines': true,
- 'labelsShowZeroValues': true,
- 'legend': true,
- 'maxNumberWidth': true,
- 'panEdgeFraction': true,
- 'pixelsPerYLabel': true,
- 'pointClickCallback': true,
- 'pointSize': true,
- 'rangeSelectorPlotFillColor': true,
- 'rangeSelectorPlotStrokeColor': true,
- 'showLabelsOnHighlight': true,
- 'showRoller': true,
- 'sigFigs': true,
- 'strokeWidth': true,
- 'underlayCallback': true,
- 'unhighlightCallback': true,
- 'xAxisLabelFormatter': true,
- 'xTicker': true,
- 'xValueFormatter': true,
- 'yAxisLabelFormatter': true,
- 'yValueFormatter': true,
- 'zoomCallback': true
- };
-
// Assume that we do not require new points.
// This will change to true if we actually do need new points.
- var requiresNewPoints = false;
// Create a dictionary of series names for faster lookup.
// If there are no labels, then the dictionary stays empty.
}
}
- // Iterate through the list of updated options.
- for (var property in attrs) {
- // Break early if we already know we need new points from a previous option.
- if (requiresNewPoints) {
- break;
- }
- if (attrs.hasOwnProperty(property)) {
- // Find out of this field is actually a series specific options list.
- if (seriesNamesDictionary[property]) {
- // This property value is a list of options for this series.
- // If any of these sub properties are not pixel safe, set the flag.
- for (var subProperty in attrs[property]) {
- // Break early if we already know we need new points from a previous option.
- if (requiresNewPoints) {
- break;
- }
- if (attrs[property].hasOwnProperty(subProperty) && !pixelSafeOptions[subProperty]) {
- requiresNewPoints = true;
- }
- }
- // If this was not a series specific option list, check if its a pixel changing property.
- } else if (!pixelSafeOptions[property]) {
- requiresNewPoints = true;
+ // Scan through a flat (i.e. non-nested) object of options.
+ // Returns true/false depending on whether new points are needed.
+ var scanFlatOptions = function(options) {
+ for (var property in options) {
+ if (options.hasOwnProperty(property) &&
+ !pixelSafeOptions[property]) {
+ return true;
}
}
- }
-
- return requiresNewPoints;
-};
-
-/**
- * Compares two arrays to see if they are equal. If either parameter is not an
- * array it will return false. Does a shallow compare
- * Dygraph.compareArrays([[1,2], [3, 4]], [[1,2], [3,4]]) === false.
- * @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)) {
- return false;
- }
- if (array1.length !== array2.length) {
return false;
- }
- for (var i = 0; i < array1.length; i++) {
- if (array1[i] !== array2[i]) {
- return false;
- }
- }
- return true;
-};
-
-/**
- * @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 || 0;
- delta = delta || Math.PI * 2 / sides;
-
- ctx.beginPath();
- 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];
};
- var initialCoordinates = computeCoordinates();
- var x = initialCoordinates[0];
- var y = initialCoordinates[1];
- ctx.moveTo(x, y);
-
- for (var idx = 0; idx < sides; idx++) {
- angle = (idx == sides - 1) ? initialAngle : (angle + delta);
- var coords = computeCoordinates();
- ctx.lineTo(coords[0], coords[1]);
+ // Iterate through the list of updated options.
+ for (var property in attrs) {
+ if (!attrs.hasOwnProperty(property)) continue;
+
+ // Find out of this field is actually a series specific options list.
+ if (property == 'highlightSeriesOpts' ||
+ (seriesNamesDictionary[property] && !attrs.series)) {
+ // This property value is a list of options for this series.
+ if (scanFlatOptions(attrs[property])) return true;
+ } else if (property == 'series' || property == 'axes') {
+ // This is twice-nested options list.
+ var perSeries = attrs[property];
+ for (var series in perSeries) {
+ if (perSeries.hasOwnProperty(series) &&
+ scanFlatOptions(perSeries[series])) {
+ return true;
+ }
+ }
+ } else {
+ // If this was not a series specific option list, check if it's a pixel
+ // changing property.
+ if (!pixelSafeOptions[property]) return true;
+ }
}
- ctx.fill();
- 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;
- ctx.fillStyle = "white";
- Dygraph.regularShape_(ctx, sides, radius, cx, cy, rotationRadians, delta);
- };
+ return false;
};
Dygraph.Circles = {
ctx.fillStyle = color;
ctx.arc(canvasx, canvasy, radius, 0, 2 * Math.PI, false);
ctx.fill();
- },
- TRIANGLE : Dygraph.shapeFunction_(3),
- SQUARE : Dygraph.shapeFunction_(4, Math.PI / 4),
- DIAMOND : Dygraph.shapeFunction_(4),
- PENTAGON : Dygraph.shapeFunction_(5),
- HEXAGON : Dygraph.shapeFunction_(6),
- CIRCLE : function(g, name, ctx, cx, cy, color, radius) {
- ctx.beginPath();
- ctx.strokeStyle = color;
- ctx.fillStyle = "white";
- ctx.arc(cx, cy, radius, 0, 2 * Math.PI, false);
- ctx.fill();
- ctx.stroke();
- },
- STAR : Dygraph.shapeFunction_(5, 0, 4 * Math.PI / 5),
- PLUS : function(g, name, ctx, cx, cy, color, radius) {
- ctx.strokeStyle = color;
-
- ctx.beginPath();
- ctx.moveTo(cx + radius, cy);
- ctx.lineTo(cx - radius, cy);
- ctx.closePath();
- ctx.stroke();
-
- ctx.beginPath();
- ctx.moveTo(cx, cy + radius);
- ctx.lineTo(cx, cy - radius);
- ctx.closePath();
- ctx.stroke();
- },
- EX : function(g, name, ctx, cx, cy, color, radius) {
- ctx.strokeStyle = color;
-
- ctx.beginPath();
- ctx.moveTo(cx + radius, cy + radius);
- ctx.lineTo(cx - radius, cy - radius);
- ctx.closePath();
- ctx.stroke();
-
- ctx.beginPath();
- ctx.moveTo(cx + radius, cy - radius);
- ctx.lineTo(cx - radius, cy + radius);
- ctx.closePath();
- ctx.stroke();
}
+ // For more shapes, include extras/shapes.js
};
/**
var iframes = document.getElementsByTagName("iframe");
for (var i = 0; i < iframes.length; i++) {
var iframe = iframes[i];
- var x = Dygraph.findPosX(iframe),
- y = Dygraph.findPosY(iframe),
+ var pos = Dygraph.findPos(iframe),
+ x = pos.x,
+ y = pos.y,
width = iframe.offsetWidth,
height = iframe.offsetHeight;
if (container === null || containee === null) {
return false;
}
- while (containee && containee !== container) {
- containee = containee.parentNode;
+ var containeeNode = /** @type {Node} */ (containee);
+ while (containeeNode && containeeNode !== container) {
+ containeeNode = containeeNode.parentNode;
}
- return (containee === container);
+ return (containeeNode === container);
};
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
+/**
+ * Converts any valid CSS color (hex, rgb(), named color) to an RGB tuple.
+ *
+ * @param {!string} colorStr Any valid CSS color string.
+ * @return {{r:number,g:number,b:number}} Parsed RGB tuple.
+ * @private
+ */
+Dygraph.toRGB_ = function(colorStr) {
+ // TODO(danvk): cache color parses to avoid repeated DOM manipulation.
+ var div = document.createElement('div');
+ div.style.backgroundColor = colorStr;
+ div.style.visibility = 'hidden';
+ document.body.appendChild(div);
+ var rgbStr = window.getComputedStyle(div, null).backgroundColor;
+ document.body.removeChild(div);
+ var bits = /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/.exec(rgbStr);
+ return {
+ r: parseInt(bits[1], 10),
+ g: parseInt(bits[2], 10),
+ b: parseInt(bits[3], 10)
+ };
};
/**
- * 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>)}
+ * Checks whether the browser supports the <canvas> tag.
+ * @param {HTMLCanvasElement=} opt_canvasElement Pass a canvas element as an
+ * optimization if you have one.
+ * @return {boolean} Whether the browser supports canvas.
*/
-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);
- }
+Dygraph.isCanvasSupported = function(opt_canvasElement) {
+ try {
+ var canvas = opt_canvasElement || document.createElement("canvas");
+ canvas.getContext("2d");
+ } catch (e) {
+ return false;
+ }
+ return true;
+};
+
+/**
+ * Parses the value as a floating point number. This is like the parseFloat()
+ * built-in, but with a few differences:
+ * - the empty string is parsed as null, rather than NaN.
+ * - if the string cannot be parsed at all, an error is logged.
+ * If the string can't be parsed, this method returns null.
+ * @param {string} x The string to be parsed
+ * @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) {
+ var val = parseFloat(x);
+ if (!isNaN(val)) return val;
+
+ // Try to figure out what happeend.
+ // If the value is the empty string, parse it as null.
+ if (/^ *$/.test(x)) return null;
+
+ // If it was actually "NaN", return it as NaN.
+ if (/^ *nan *$/i.test(x)) return NaN;
+
+ // Looks like a parsing error.
+ var msg = "Unable to parse '" + x + "' as a number";
+ if (opt_line !== undefined && opt_line_no !== undefined) {
+ msg += " on line " + (1+(opt_line_no||0)) + " ('" + opt_line + "') of CSV.";
}
+ console.error(msg);
+
+ return null;
};
+
+})();
projects / dygraphs.git / blobdiff