From 760c3e92458d92a084b7b16c705b53abe184f7dc Mon Sep 17 00:00:00 2001
From: AlexDM0 <alexdemulder@gmail.com>
Date: Wed, 3 Jun 2015 11:34:03 +0200
Subject: [PATCH] changed autoResize to only draw when change is detected.

---
 lib/network/modules/Canvas.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/network/modules/Canvas.js b/lib/network/modules/Canvas.js
index f052ef9f..739f3568 100644
--- a/lib/network/modules/Canvas.js
+++ b/lib/network/modules/Canvas.js
@@ -57,7 +57,12 @@ class Canvas {
     if (this.options.autoResize === true) {
       // automatically adapt to a changing size of the browser.
       this._cleanUp();
-      this.resizeTimer = setInterval(() => {this.setSize(); this.body.emitter.emit("_requestRedraw");}, 1000);
+      this.resizeTimer = setInterval(() => {
+        let changed = this.setSize();
+        if (changed === true) {
+          this.body.emitter.emit("_requestRedraw");
+        }
+      }, 1000);
       this.resizeFunction = this._onResize.bind(this);
       util.addEventListener(window,'resize',this.resizeFunction);
     }
@@ -228,6 +233,8 @@ class Canvas {
     if (emitEvent === true) {
       this.body.emitter.emit('resize', {width:this.frame.canvas.width / this.pixelRatio, height:this.frame.canvas.height / this.pixelRatio, oldWidth: oldWidth / this.pixelRatio, oldHeight: oldHeight / this.pixelRatio});
     }
+
+    return emitEvent;
   };