* search) and generic DOM-manipulation functions.
*/
+/*jshint globalstrict: true */
+/*global Dygraph:false, G_vmlCanvasManager:false, Node:false, printStackTrace: false */
+"use strict";
+
Dygraph.LOG_SCALE = 10;
Dygraph.LN_TEN = Math.log(Dygraph.LOG_SCALE);
/** @private */
Dygraph.log10 = function(x) {
return Math.log(x) / Dygraph.LN_TEN;
-}
+};
// Various logging levels.
Dygraph.DEBUG = 1;
Dygraph.WARNING = 3;
Dygraph.ERROR = 3;
-// TODO(danvk): any way I can get the line numbers to be this.warn call?
+// 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.DASHED_LINE = [7, 3];
+/** A dot dash stroke pattern. */
+Dygraph.DOT_DASH_LINE = [7, 2, 2, 2];
+
/**
* @private
* Log an error on the JS console at the given severity.
* @param { String } The message to log.
*/
Dygraph.log = function(severity, message) {
+ var st;
+ if (typeof(printStackTrace) != 'undefined') {
+ // 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(/^.*@ ?/, '') + ')';
+ }
+
if (typeof(console) != 'undefined') {
switch (severity) {
case Dygraph.DEBUG:
break;
}
}
+
+ if (Dygraph.LOG_STACK_TRACES) {
+ console.log(st.join('\n'));
+ }
};
/** @private */
* @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);
};
/**
+ * @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.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;
+ return true;
+};
+
+/**
* Number formatting function which mimicks 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
//
// Finally, the argument for toExponential() is the number of trailing digits,
// so we take off 1 for the value before the '.'.
- return (Math.abs(x) < 1.0e-3 && x != 0.0) ?
+ return (Math.abs(x) < 1.0e-3 && x !== 0.0) ?
x.toExponential(p - 1) : x.toPrecision(p);
};
* @param { Integer } [high] The last index in arry to consider (optional)
*/
Dygraph.binarySearch = function(val, arry, abs, low, high) {
- if (low == null || high == null) {
+ if (low === null || low === undefined ||
+ high === null || high === undefined) {
low = 0;
high = arry.length - 1;
}
if (low > high) {
return -1;
}
- if (abs == null) {
+ if (abs === null || abs === undefined) {
abs = 0;
}
var validIndex = function(idx) {
return idx >= 0 && idx < arry.length;
- }
- var mid = parseInt((low + high) / 2);
+ };
+ var mid = parseInt((low + high) / 2, 10);
var element = arry[mid];
if (element == val) {
return mid;
}
+
+ var idx;
if (element > val) {
if (abs > 0) {
// Accept if element > val, but also if prior element < val.
- var idx = mid - 1;
+ idx = mid - 1;
if (validIndex(idx) && arry[idx] < val) {
return mid;
}
if (element < val) {
if (abs < 0) {
// Accept if element < val, but also if prior element > val.
- var idx = mid + 1;
+ idx = mid + 1;
if (validIndex(idx) && arry[idx] > val) {
return mid;
}
Dygraph.dateParser = function(dateStr) {
var dateStrSlashed;
var d;
+
+ // Let the system try the format first, with one caveat:
+ // YYYY-MM-DD[ HH:MM:SS] is interpreted as UTC by a variety of browsers.
+ // dygraphs displays dates in local time, so this will result in surprising
+ // inconsistencies. But if you specify "T" or "Z" (i.e. YYYY-MM-DDTHH:MM:SS),
+ // then you probably know what you're doing, so we'll let you go ahead.
+ // 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);
+ if (d && !isNaN(d)) return d;
+ }
+
if (dateStr.search("-") != -1) { // e.g. '2009-7-12' or '2009-07-12'
dateStrSlashed = dateStr.replace("-", "/", "g");
while (dateStrSlashed.search("-") != -1) {
d = Dygraph.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);
+ dateStrSlashed = dateStr.substr(0,4) + "/" + dateStr.substr(4,2) + "/" +
+ dateStr.substr(6,2);
d = Dygraph.dateStrToMillis(dateStrSlashed);
} else {
// Any format that Date.parse will accept, e.g. "2009/07/12" or
if (typeof(o) != 'undefined' && o !== null) {
for (var k in o) {
if (o.hasOwnProperty(k)) {
- if (o[k] == null) {
+ if (o[k] === null) {
self[k] = null;
} else if (Dygraph.isArrayLike(o[k])) {
self[k] = o[k].slice();
Dygraph.createCanvas = function() {
var canvas = document.createElement("canvas");
- isIE = (/MSIE/.test(navigator.userAgent) && !window.opera);
+ var isIE = (/MSIE/.test(navigator.userAgent) && !window.opera);
if (isIE && (typeof(G_vmlCanvasManager) != 'undefined')) {
canvas = G_vmlCanvasManager.initElement(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.
+ */
+Dygraph.isAndroid = function() {
+ return (/Android/).test(navigator.userAgent);
+};
+
+/**
+ * @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.
+ * @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();
+ return;
+ }
+
+ (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();
+ } else {
+ 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.
'axisLineColor': true,
'axisLineWidth': true,
'clickCallback': true,
- 'colorSaturation': true,
- 'colorValue': true,
- 'colors': true,
- 'connectSeparatedPoints': true,
'digitsAfterDecimal': true,
'drawCallback': true,
+ 'drawHighlightPointCallback': true,
'drawPoints': true,
+ 'drawPointCallback': true,
'drawXGrid': true,
'drawYGrid': true,
'fillAlpha': true,
}
// Iterate through the list of updated options.
- for (property in attrs) {
+ for (var property in attrs) {
// Break early if we already know we need new points from a previous option.
if (requiresNewPoints) {
break;
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 (subProperty in attrs[property]) {
+ for (var subProperty in attrs[property]) {
// Break early if we already know we need new points from a previous option.
if (requiresNewPoints) {
break;
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 array1 first array
+ * @param array2 second array
+ * @return True if both parameters are arrays, and contents are equal.
+ */
+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;
+};
+
+/**
+ * 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.
+ */
+Dygraph.regularShape_ = function(
+ ctx, sides, radius, cx, cy, rotationRadians, delta) {
+ rotationRadians = rotationRadians ? rotationRadians : 0;
+ delta = 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];
+ };
+
+ 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]);
+ }
+ ctx.fill();
+ ctx.stroke();
+}
+
+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);
+ };
+};
+
+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();
+ 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();
+ }
+};
projects / dygraphs.git / blobdiff