X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=dygraph-canvas.js;h=99ad493962b183b0a674367ec4ede451775fec65;hb=db775859ec7ae823b731bfb04cb544ef3ae7ad3a;hp=7b0cebffff0f2e4a1d1583278d5c6470d8a27d0f;hpb=3c080cd0184a943cd77118e83d3f4148360505d6;p=dygraphs.git

diff --git a/dygraph-canvas.js b/dygraph-canvas.js
index 7b0cebf..99ad493 100644
--- a/dygraph-canvas.js
+++ b/dygraph-canvas.js
@@ -57,8 +57,6 @@ var DygraphCanvasRenderer = function(dygraph, element, elementContext, layout) {
   this.height = this.element.height;
   this.width = this.element.width;
 
-  this.elementContext.save();
-
   // --- check whether everything is ok before we return
   if (!this.isIE && !(DygraphCanvasRenderer.isSupported(this.element)))
       throw "Canvas is not supported.";
@@ -127,11 +125,6 @@ DygraphCanvasRenderer.prototype.clear = function() {
   context.clearRect(0, 0, this.width, this.height);
 };
 
-DygraphCanvasRenderer.prototype.onDoneDrawing = function() {
-  // balances the save called in the constructor.
-  this.elementContext.restore();
-}
-
 /**
  * Checks whether the browser supports the <canvas> tag.
  * @private
@@ -738,13 +731,21 @@ DygraphCanvasRenderer._fillPlotter = function(e) {
         'rgba(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ',' + fillAlpha + ')';
     ctx.fillStyle = err_color;
     ctx.beginPath();
-    while(iter.hasNext) {
+    var last_x, is_first = true;
+    while (iter.hasNext) {
       var point = iter.next();
       if (!Dygraph.isOK(point.y)) {
         prevX = NaN;
         continue;
       }
       if (stackedGraph) {
+        if (!is_first && last_x == point.xval) {
+          continue;
+        } else {
+          is_first = false;
+          last_x = point.xval;
+        }
+
         currBaseline = baseline[point.canvasx];
         var lastY;
         if (currBaseline === undefined) {