From: Nick Downie <hello@nickdownie.com>
Date: Tue, 6 Jan 2015 23:44:51 +0000 (+0000)
Subject: Restore original canvas context when destroying
X-Git-Tag: v1.0.1~3^2
X-Git-Url: http://git.ipfire.org/gitweb/?a=commitdiff_plain;h=refs%2Fpull%2F855%2Fhead;p=thirdparty%2FChart.js.git

Restore original canvas context when destroying
---

diff --git a/src/Chart.Core.js b/src/Chart.Core.js
index 36a60841a..b71903e51 100755
--- a/src/Chart.Core.js
+++ b/src/Chart.Core.js
@@ -868,6 +868,21 @@
 		destroy : function(){
 			this.clear();
 			unbindEvents(this, this.events);
+			var canvas = this.chart.canvas;
+
+			// Reset canvas height/width attributes starts a fresh with the canvas context
+			canvas.width = this.chart.width;
+			canvas.height = this.chart.height;
+
+			// < IE9 doesn't support removeProperty
+			if (canvas.style.removeProperty) {
+				canvas.style.removeProperty('width');
+				canvas.style.removeProperty('height');
+			} else {
+				canvas.style.removeAttribute('width');
+				canvas.style.removeAttribute('height');
+			}
+
 			delete Chart.instances[this.id];
 		},
 		showTooltip : function(ChartElements, forceRedraw){