From 421f177336b1dbd195952cfee457483ec9f479ba Mon Sep 17 00:00:00 2001
From: Dan Vanderkam <dan@dygraphs.com>
Date: Sat, 25 Feb 2012 21:45:28 -0500
Subject: [PATCH] Fix Issue 279: Strange animations when zooming animations are
 enabled and double click zooming

---
 dygraph-interaction-model.js | 6 ++++++
 dygraph.js                   | 6 ++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/dygraph-interaction-model.js b/dygraph-interaction-model.js
index b6c19d2..4d23eff 100644
--- a/dygraph-interaction-model.js
+++ b/dygraph-interaction-model.js
@@ -329,9 +329,11 @@ Dygraph.Interaction.endZoom = function(event, g, context) {
   if (regionWidth >= 10 && context.dragDirection == Dygraph.HORIZONTAL) {
     g.doZoomX_(Math.min(context.dragStartX, context.dragEndX),
                Math.max(context.dragStartX, context.dragEndX));
+    context.cancelNextDblclick = true;
   } else if (regionHeight >= 10 && context.dragDirection == Dygraph.VERTICAL) {
     g.doZoomY_(Math.min(context.dragStartY, context.dragEndY),
                Math.max(context.dragStartY, context.dragEndY));
+    context.cancelNextDblclick = true;
   } else {
     g.clearZoomRect_();
   }
@@ -548,6 +550,10 @@ Dygraph.Interaction.defaultModel = {
 
   // Disable zooming out if panning.
   dblclick: function(event, g, context) {
+    if (context.cancelNextDblclick) {
+      context.cancelNextDblclick = false;
+      return;
+    }
     if (event.altKey || event.shiftKey) {
       return;
     }
diff --git a/dygraph.js b/dygraph.js
index 045c394..c60eccc 100644
--- a/dygraph.js
+++ b/dygraph.js
@@ -851,12 +851,12 @@ Dygraph.prototype.createInterface_ = function() {
   var dygraph = this;
   
   this.mouseMoveHandler = function(e) {
-	  dygraph.mouseMove_(e);
+    dygraph.mouseMove_(e);
   };
   Dygraph.addEvent(this.mouseEventElement_, 'mousemove', this.mouseMoveHandler);
   
   this.mouseOutHandler = function(e) {
-	  dygraph.mouseOut_(e);
+    dygraph.mouseOut_(e);
   };
   Dygraph.addEvent(this.mouseEventElement_, 'mouseout', this.mouseOutHandler);
 
@@ -1120,6 +1120,7 @@ Dygraph.prototype.createDragInterface_ = function() {
     prevEndX: null, // pixel coordinates
     prevEndY: null, // pixel coordinates
     prevDragDirection: null,
+    cancelNextDblclick: false,  // see comment in dygraph-interaction-model.js
 
     // The value on the left side of the graph when a pan operation starts.
     initialLeftmostDate: null,
@@ -1156,6 +1157,7 @@ Dygraph.prototype.createDragInterface_ = function() {
       context.py = Dygraph.findPosY(g.canvas_);
       context.dragStartX = g.dragGetX_(event, context);
       context.dragStartY = g.dragGetY_(event, context);
+      context.cancelNextDblclick = false;
     }
   };
 
-- 
2.7.4