X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=dygraph-canvas.js;h=e531ece4ba73566b0a5df54ab391fccd687d6935;hb=4ecb55b5c66f7723d1f5c588af62855bd4c06faa;hp=fa0dd800b4ad79405133858010f137979a09eace;hpb=5d93f811018b7c7ef41cc0da7e1793ee228e0ed9;p=dygraphs.git

diff --git a/dygraph-canvas.js b/dygraph-canvas.js
index fa0dd80..e531ece 100644
--- a/dygraph-canvas.js
+++ b/dygraph-canvas.js
@@ -57,6 +57,8 @@ 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.";
@@ -125,6 +127,11 @@ 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
@@ -475,7 +482,7 @@ DygraphCanvasRenderer.prototype._renderLineChart = function(opt_seriesName, opt_
 
     for (var j = 0; j < sets.length; j++) {
       setName = setNames[j];
-      if (opt_seriesName && setName != opt_seriesName) continue;
+      if (opt_seriesName && !(is_last && setName == opt_seriesName)) continue;
 
       var points = sets[j];