X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=dygraph-utils.js;h=f53c81ea16360486f42429546bfb90955b91b0eb;hb=7bd1be5b6eb3ee09d7da9bb1ab7cd1b3ad5974bd;hp=e306b3ef5e180ef6fc24e5e3a64493ec79de9c7a;hpb=242a8bc8c3282bf2334aa3e9254d6e99e3e2f2c2;p=dygraphs.git

diff --git a/dygraph-utils.js b/dygraph-utils.js
index e306b3e..f53c81e 100644
--- a/dygraph-utils.js
+++ b/dygraph-utils.js
@@ -76,18 +76,28 @@ Dygraph.log = function(severity, message) {
   }
 
   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) {
+        method.call(console, msg);
+      } else {
+        console.log(msg);
+      }
+    };
+
     switch (severity) {
       case Dygraph.DEBUG:
-        window.console.debug('dygraphs: ' + message);
+        log(console, console.debug, 'dygraphs: ' + message);
         break;
       case Dygraph.INFO:
-        window.console.info('dygraphs: ' + message);
+        log(console, console.info, 'dygraphs: ' + message);
         break;
       case Dygraph.WARNING:
-        window.console.warn('dygraphs: ' + message);
+        log(console, console.warn, 'dygraphs: ' + message);
         break;
       case Dygraph.ERROR:
-        window.console.error('dygraphs: ' + message);
+        log(console, console.error, 'dygraphs: ' + message);
         break;
     }
   }
@@ -183,7 +193,7 @@ Dygraph.addEvent = function addEvent(elem, type, fn) {
  *     on the event. The function takes one parameter: the event object.
  * @private
  */
-Dygraph.prototype.addEvent = function addEvent(elem, type, fn) {
+Dygraph.prototype.addEvent = function(elem, type, fn) {
   Dygraph.addEvent(elem, type, fn);
   this.registeredEvents_.push({ elem : elem, type : type, fn : fn });
 };
@@ -197,7 +207,7 @@ Dygraph.prototype.addEvent = function addEvent(elem, type, fn) {
  *     on the event. The function takes one parameter: the event object.
  * @private
  */
-Dygraph.removeEvent = function addEvent(elem, type, fn) {
+Dygraph.removeEvent = function(elem, type, fn) {
   if (elem.removeEventListener) {
     elem.removeEventListener(type, fn, false);
   } else {
@@ -291,6 +301,12 @@ 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;
@@ -322,6 +338,12 @@ 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;
@@ -814,39 +836,71 @@ 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);
+          };
+})();
+
 /**
- * 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 {function(number)} repeat_fn Called repeatedly -- takes the number of
- *     calls (from 0 to times-1) as an argument.
- * @param {number} times The number of times to call repeat_fn
- * @param {number} every_ms Milliseconds between calls
- * @param {function()} cleanup_fn 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.
+    });
   })();
 };
 
@@ -997,7 +1051,6 @@ Dygraph.regularShape_ = function(
   delta = delta || Math.PI * 2 / sides;
 
   ctx.beginPath();
-  var first = true;
   var initialAngle = rotationRadians;
   var angle = initialAngle;
 
@@ -1181,3 +1234,63 @@ Dygraph.detectLineDelimiter = function(data) {
 
   return null;
 };
+
+/**
+ * Is one element contained by another?
+ * @param {Element} containee The contained element.
+ * @param {Element} container The container element.
+ * @return {boolean} Whether containee is inside (or equal to) container.
+ * @private
+ */
+Dygraph.isElementContainedBy = 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);
+    }
+  }
+};