From dce3f6f6ca4524ef3a65ce9558ce47ba1fa43ce5 Mon Sep 17 00:00:00 2001
From: kangax <kangax@gmail.com>
Date: Sat, 20 Apr 2013 12:04:45 -0400
Subject: [PATCH] Optimize _initDimensions to not create off-screen canvas
 every time. Closes #564

---
 src/text.class.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/text.class.js b/src/text.class.js
index af8357a8..fbd5717f 100644
--- a/src/text.class.js
+++ b/src/text.class.js
@@ -185,8 +185,10 @@
      * @method _initDimensions
      */
     _initDimensions: function() {
-      var canvasEl = fabric.util.createCanvasElement();
-      this._render(canvasEl.getContext('2d'));
+      if (!this._ctxForDimensions) {
+        this._ctxForDimensions = fabric.util.createCanvasElement().getContext('2d');
+      }
+      this._render(this._ctxForDimensions);
     },
 
     /**