From b616fad11c12b9fff811b64ed6ceb97ea3700640 Mon Sep 17 00:00:00 2001
From: Uemit Seren <uemit.seren+git@gmail.com>
Date: Wed, 3 Apr 2013 14:45:36 +0200
Subject: [PATCH] #Bug 333: Support for passing point index to
 drawPointCallback and drawHighlightPointCallback added

---
 dygraph-canvas.js | 4 ++--
 dygraph-layout.js | 3 ++-
 dygraph.js        | 2 +-
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/dygraph-canvas.js b/dygraph-canvas.js
index 99ad493..ee325c6 100644
--- a/dygraph-canvas.js
+++ b/dygraph-canvas.js
@@ -373,7 +373,7 @@ DygraphCanvasRenderer._drawSeries = function(e,
         ctx.moveTo(point.canvasx, point.canvasy);
       }
       if (drawPoints || isIsolated) {
-        pointsOnLine.push([point.canvasx, point.canvasy]);
+        pointsOnLine.push([point.canvasx, point.canvasy, point.idx]);
       }
       prevCanvasX = point.canvasx;
       prevCanvasY = point.canvasy;
@@ -398,7 +398,7 @@ DygraphCanvasRenderer._drawPointsOnLine = function(
     var cb = pointsOnLine[idx];
     ctx.save();
     drawPointCallback(
-        e.dygraph, e.setName, ctx, cb[0], cb[1], color, pointSize);
+        e.dygraph, e.setName, ctx, cb[0], cb[1], color, pointSize,cb[2]);
     ctx.restore();
   }
 };
diff --git a/dygraph-layout.js b/dygraph-layout.js
index 4caafc0..b67fe2c 100644
--- a/dygraph-layout.js
+++ b/dygraph-layout.js
@@ -242,7 +242,8 @@ DygraphLayout.prototype._evaluateLineCharts = function() {
         y: yNormal,
         xval: xValue,
         yval: yValue,
-        name: setName  // TODO(danvk): is this really necessary?
+        name: setName,  // TODO(danvk): is this really necessary?
+        idx: j + this.dygraph_.boundaryIds_[setIdx][0]
       };
     }
 
diff --git a/dygraph.js b/dygraph.js
index 4316ac3..6e4d2ce 100644
--- a/dygraph.js
+++ b/dygraph.js
@@ -1988,7 +1988,7 @@ Dygraph.prototype.updateSelection_ = function(opt_animFraction) {
       ctx.strokeStyle = color;
       ctx.fillStyle = color;
       callback(this.g, pt.name, ctx, canvasx, pt.canvasy,
-          color, circleSize);
+          color, circleSize,pt.idx);
     }
     ctx.restore();
 
-- 
2.7.4