X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=plugins%2Frange-selector.js;h=c2158d31b6364e8efe72df9d34a9007f5ebea9ee;hb=4f41df5a2a3c3eec6795d60e74c2f8a711565873;hp=797140cd0fa0810076f7def64672fe33b2f79785;hpb=0cd1ad15aefb3bd6507886e4cbba0d7587a56610;p=dygraphs.git

diff --git a/plugins/range-selector.js b/plugins/range-selector.js
index 797140c..c2158d3 100644
--- a/plugins/range-selector.js
+++ b/plugins/range-selector.js
@@ -16,16 +16,11 @@ Dygraph.Plugins.RangeSelector = (function() {
 /*global Dygraph:false */
 "use strict";
 
-// Range selector status values
-var NOT_CREATED = 0; // Range selector interface has not been created
-var CREATED = 1 << 0; // Range selector interface has been created
-var ADDED_TO_GRAPH = 1 << 1; // Range selector elements have been added to the graph
-
 var rangeSelector = function() {
   this.isIE_ = /MSIE/.test(navigator.userAgent) && !window.opera;
   this.hasTouchInterface_ = typeof(TouchEvent) != 'undefined';
   this.isMobileDevice_ = /mobile|android/gi.test(navigator.appVersion);
-  this.status_ = NOT_CREATED;
+  this.interfaceCreated_ = false;
 };
 
 rangeSelector.prototype.toString = function() {
@@ -34,8 +29,6 @@ rangeSelector.prototype.toString = function() {
 
 rangeSelector.prototype.activate = function(dygraph) {
   this.dygraph_ = dygraph;
-  this.layout_ = dygraph.layout_;
-  this.graphDiv_ = dygraph.graphDiv;
   this.isUsingExcanvas_ = dygraph.isUsingExcanvas_;
   if (this.getOption_('showRangeSelector')) {
     this.createInterface_();
@@ -85,8 +78,8 @@ rangeSelector.prototype.createInterface_ = function() {
     this.dygraph_.updateOptions({animatedZooms: false}, true);
   }
 
+  this.interfaceCreated_ = true;
   this.addToGraph_();
-  this.status_ = CREATED;
 };
 
 /**
@@ -94,12 +87,11 @@ rangeSelector.prototype.createInterface_ = function() {
  * Adds the range selector to the graph.
  */
 rangeSelector.prototype.addToGraph_ = function() {
-  var graphDiv = this.graphDiv_;
+  var graphDiv = this.graphDiv_ = this.dygraph_.graphDiv;
   graphDiv.appendChild(this.bgcanvas_);
   graphDiv.appendChild(this.fgcanvas_);
   graphDiv.appendChild(this.leftZoomHandle_);
   graphDiv.appendChild(this.rightZoomHandle_);
-  this.status_ |= ADDED_TO_GRAPH;
 };
 
 /**
@@ -112,7 +104,7 @@ rangeSelector.prototype.removeFromGraph_ = function() {
   graphDiv.removeChild(this.fgcanvas_);
   graphDiv.removeChild(this.leftZoomHandle_);
   graphDiv.removeChild(this.rightZoomHandle_);
-  this.status_ ^= ADDED_TO_GRAPH;
+  this.graphDiv_ = null;
 };
 
 /**
@@ -130,7 +122,7 @@ rangeSelector.prototype.reserveSpace_ = function(e) {
  * Renders the static portion of the range selector at the predraw stage.
  */
 rangeSelector.prototype.renderStaticLayer_ = function() {
-  if (!this.updateInterfaceStatus_()) {
+  if (!this.updateVisibility_()) {
     return;
   }
   this.resize_();
@@ -142,7 +134,7 @@ rangeSelector.prototype.renderStaticLayer_ = function() {
  * Renders the interactive portion of the range selector after the chart has been drawn.
  */
 rangeSelector.prototype.renderInteractiveLayer_ = function() {
-  if (!this.updateInterfaceStatus_() || this.isChangingRange_) {
+  if (!this.updateVisibility_() || this.isChangingRange_) {
     return;
   }
   this.placeZoomHandles_();
@@ -151,17 +143,17 @@ rangeSelector.prototype.renderInteractiveLayer_ = function() {
 
 /**
  * @private
- * Check to see if the range selector is enabled/disabled and update interface accordingly.
+ * Check to see if the range selector is enabled/disabled and update visibility accordingly.
  */
-rangeSelector.prototype.updateInterfaceStatus_ = function() {
+rangeSelector.prototype.updateVisibility_ = function() {
   var enabled = this.getOption_('showRangeSelector');
   if (enabled) {
-    if (!(this.status_ & CREATED)) {
+    if (!this.interfaceCreated_) {
       this.createInterface_();
-    } else if (!(this.status_ & ADDED_TO_GRAPH)) {
+    } else if (!this.graphDiv_ || !this.graphDiv_.parentNode) {
       this.addToGraph_();
     }
-  } else if (this.status_ & ADDED_TO_GRAPH) {
+  } else if (this.graphDiv_) {
     this.removeFromGraph_();
     var dygraph = this.dygraph_;
     setTimeout(function() { dygraph.width_ = 0; dygraph.resize(); }, 1);
@@ -183,7 +175,7 @@ rangeSelector.prototype.resize_ = function() {
     canvas.style.height = canvas.height + 'px';  // for IE
   }
 
-  var plotArea = this.layout_.getPlotArea();
+  var plotArea = this.dygraph_.layout_.getPlotArea();
   var xAxisLabelHeight = this.getOption_('xAxisHeight') || (this.getOption_('axisLabelFontSize') + 2 * this.getOption_('axisTickSize'));
   this.canvasRect_ = {
     x: plotArea.x,
@@ -273,7 +265,7 @@ rangeSelector.prototype.createZoomHandles_ = function() {
 rangeSelector.prototype.initInteraction_ = function() {
   var self = this;
   var topElem = this.isIE_ ? document : window;
-  var xLast = 0;
+  var pageXLast = 0;
   var handle = null;
   var isZooming = false;
   var isPanning = false;
@@ -286,7 +278,7 @@ rangeSelector.prototype.initInteraction_ = function() {
   // functions, defined below.  Defining them this way (rather than with
   // "function foo() {...}" makes JSHint happy.
   var toXDataWindow, onZoomStart, onZoom, onZoomEnd, doZoom, isMouseInPanZone,
-      onPanStart, onPan, onPanEnd, doPan, onCanvasMouseMove, applyBrowserZoomLevel;
+      onPanStart, onPan, onPanEnd, doPan, onCanvasHover, getCursorPageX;
 
   // Touch event functions
   var onZoomHandleTouchEvent, onCanvasTouchEvent, addTouchEvents;
@@ -299,22 +291,28 @@ rangeSelector.prototype.initInteraction_ = function() {
     return [xDataMin, xDataMax];
   };
 
-  applyBrowserZoomLevel = function(delX) {
-    var zoom = window.outerWidth/document.documentElement.clientWidth;
-    if (!isNaN(zoom)) {
-      return delX/zoom;
+  getCursorPageX = function(e) {
+    if (e.pageX !== null) {
+      return e.pageX;
     } else {
-      return delX;
+      // Taken from jQuery.
+      var target = e.target || e.srcElement || document;
+      var eventDoc = target.ownerDocument || target.document || document;
+      var doc = eventDoc.documentElement, body = eventDoc.body;
+      return e.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);
     }
   };
 
   onZoomStart = function(e) {
     Dygraph.cancelEvent(e);
     isZooming = true;
-    xLast = e.screenX;
+    pageXLast = getCursorPageX(e);
     handle = e.target ? e.target : e.srcElement;
-    self.dygraph_.addEvent(topElem, 'mousemove', onZoom);
-    self.dygraph_.addEvent(topElem, 'mouseup', onZoomEnd);
+    if (e.type === 'mousedown' || e.type === 'dragstart') {
+      // These events are removed manually.
+      Dygraph.addEvent(topElem, 'mousemove', onZoom);
+      Dygraph.addEvent(topElem, 'mouseup', onZoomEnd);
+    }
     self.fgcanvas_.style.cursor = 'col-resize';
     tarp.cover();
     return true;
@@ -325,23 +323,23 @@ rangeSelector.prototype.initInteraction_ = function() {
       return false;
     }
     Dygraph.cancelEvent(e);
-    var delX = e.screenX - xLast;
-    if (Math.abs(delX) < 4 || e.screenX === 0) {
-      // First iPad move event seems to have screenX = 0
+
+    var pageX = getCursorPageX(e);
+    var delX = pageX - pageXLast;
+    if (Math.abs(delX) < 4) {
       return true;
     }
-    xLast = e.screenX;
-    delX = applyBrowserZoomLevel(delX);
+    pageXLast = pageX;
 
     // Move handle.
     var zoomHandleStatus = self.getZoomHandleStatus_();
     var newPos;
     if (handle == self.leftZoomHandle_) {
-      newPos = zoomHandleStatus.leftHandlePos + delX;
+      newPos = pageX;
       newPos = Math.min(newPos, zoomHandleStatus.rightHandlePos - handle.width - 3);
       newPos = Math.max(newPos, self.canvasRect_.x);
     } else {
-      newPos = zoomHandleStatus.rightHandlePos + delX;
+      newPos = pageX;
       newPos = Math.min(newPos, self.canvasRect_.x + self.canvasRect_.w);
       newPos = Math.max(newPos, zoomHandleStatus.leftHandlePos + handle.width + 3);
     }
@@ -404,9 +402,12 @@ rangeSelector.prototype.initInteraction_ = function() {
     if (!isPanning && isMouseInPanZone(e) && self.getZoomHandleStatus_().isZoomed) {
       Dygraph.cancelEvent(e);
       isPanning = true;
-      xLast = e.screenX;
-      self.dygraph_.addEvent(topElem, 'mousemove', onPan);
-      self.dygraph_.addEvent(topElem, 'mouseup', onPanEnd);
+      pageXLast = getCursorPageX(e);
+      if (e.type === 'mousedown') {
+        // These events are removed manually.
+        Dygraph.addEvent(topElem, 'mousemove', onPan);
+        Dygraph.addEvent(topElem, 'mouseup', onPanEnd);
+      }
       return true;
     }
     return false;
@@ -418,12 +419,12 @@ rangeSelector.prototype.initInteraction_ = function() {
     }
     Dygraph.cancelEvent(e);
 
-    var delX = e.screenX - xLast;
+    var pageX = getCursorPageX(e);
+    var delX = pageX - pageXLast;
     if (Math.abs(delX) < 4) {
       return true;
     }
-    xLast = e.screenX;
-    delX = applyBrowserZoomLevel(delX);
+    pageXLast = pageX;
 
     // Move range view
     var zoomHandleStatus = self.getZoomHandleStatus_();
@@ -476,7 +477,7 @@ rangeSelector.prototype.initInteraction_ = function() {
     }
   };
 
-  onCanvasMouseMove = function(e) {
+  onCanvasHover = function(e) {
     if (isZooming || isPanning) {
       return;
     }
@@ -532,7 +533,7 @@ rangeSelector.prototype.initInteraction_ = function() {
     this.dygraph_.addEvent(this.iePanOverlay_, 'mousedown', onPanStart);
   } else {
     this.dygraph_.addEvent(this.fgcanvas_, 'mousedown', onPanStart);
-    this.dygraph_.addEvent(this.fgcanvas_, 'mousemove', onCanvasMouseMove);
+    this.dygraph_.addEvent(this.fgcanvas_, 'mousemove', onCanvasHover);
   }
 
   // Touch events