X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;ds=sidebyside;f=dygraph-utils.js;h=4f90c65e2480a9a992b823e6dab35fc680c4679b;hb=9f79cb9489fd18858e4f5b661cb4b03be988b3b3;hp=a5d3c2619c6189a753867c2637968a15926db59e;hpb=35b124b9c051c83e196f4476dfbb826466dd5a0e;p=dygraphs.git
diff --git a/dygraph-utils.js b/dygraph-utils.js
index a5d3c26..4f90c65 100644
--- a/dygraph-utils.js
+++ b/dygraph-utils.js
@@ -11,8 +11,9 @@
* search) and generic DOM-manipulation functions.
*/
-/*jshint globalstrict: true */
-/*global Dygraph:false, G_vmlCanvasManager:false, Node:false, printStackTrace: false */
+(function() {
+
+/*global Dygraph:false, G_vmlCanvasManager:false, Node:false */
"use strict";
Dygraph.LOG_SCALE = 10;
@@ -27,20 +28,6 @@ Dygraph.log10 = function(x) {
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. */
@@ -49,94 +36,6 @@ Dygraph.DASHED_LINE = [7, 3];
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.warn = function(message) {
- Dygraph.log(Dygraph.WARNING, message);
-};
-
-/**
- * @param {string} message
- */
-Dygraph.error = function(message) {
- Dygraph.log(Dygraph.ERROR, message);
-};
-
-/**
* Return the 2d context for a dygraph canvas.
*
* This method is only exposed for the sake of replacing the function in
@@ -476,6 +375,44 @@ Dygraph.zeropad = function(x) {
};
/**
+ * 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} hh The hours (from 0-23)
* @param {number} mm The minutes (from 0-59)
@@ -494,41 +431,32 @@ Dygraph.hmsString_ = function(hh, mm, ss) {
/**
* Convert a JS date (millis since epoch) to a formatted string.
- * @param {number} date The JavaScript date (ms since epoch)
+ * @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(date, utc) {
+Dygraph.dateString_ = function(time, utc) {
var zeropad = Dygraph.zeropad;
- var dt = new Date(date);
- var y, m, d, hh, mm, ss;
- if (utc) {
- y = dt.getUTCFullYear();
- m = dt.getUTCMonth();
- d = dt.getUTCDate();
- hh = dt.getUTCHours();
- mm = dt.getUTCMinutes();
- ss = dt.getUTCSeconds();
- } else {
- y = dt.getFullYear();
- m = dt.getMonth();
- d = dt.getDate();
- hh = dt.getHours();
- mm = dt.getMinutes();
- ss = dt.getSeconds();
- }
+ 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 frac = hh * 3600 + mm * 60 + ss;
var ret = year + "/" + month + "/" + day;
if (frac) {
- ret += " " + Dygraph.hmsString_(hh,mm,ss);
+ ret += " " + Dygraph.hmsString_(hh, mm, ss);
}
return ret;
};
@@ -643,7 +571,7 @@ Dygraph.dateParser = function(dateStr) {
}
if (!d || isNaN(d)) {
- Dygraph.error("Couldn't parse " + dateStr + " as a date");
+ console.error("Couldn't parse " + dateStr + " as a date");
}
return d;
};
@@ -791,6 +719,37 @@ Dygraph.createCanvas = function() {
};
/**
+ * 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;
+ }
+};
+
+/**
* Checks whether the user is on an Android browser.
* Android does not fully support the