From 29fa604d742191e29af69b0ab0556386ece24bc5 Mon Sep 17 00:00:00 2001
From: jdescottes <julian.descottes@gmail.com>
Date: Sat, 12 Apr 2014 15:16:18 +0200
Subject: [PATCH] Fix : protect LayerRenderer against fake setDisplaySize calls

---
 src/js/rendering/frame/CachedFrameRenderer.js |  2 +-
 src/js/rendering/layer/LayersRenderer.js      | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/js/rendering/frame/CachedFrameRenderer.js b/src/js/rendering/frame/CachedFrameRenderer.js
index 79e6d5f7..6bdd69ea 100644
--- a/src/js/rendering/frame/CachedFrameRenderer.js
+++ b/src/js/rendering/frame/CachedFrameRenderer.js
@@ -24,7 +24,7 @@
    */
   ns.CachedFrameRenderer.prototype.setDisplaySize = function (width, height) {
     if (this.displayWidth !== width || this.displayHeight !== height) {
-      pskl.rendering.frame.FrameRenderer.prototype.setDisplaySize.call(this, width, height);
+      this.superclass.setDisplaySize.call(this, width, height);
     }
   };
 
diff --git a/src/js/rendering/layer/LayersRenderer.js b/src/js/rendering/layer/LayersRenderer.js
index cb0e2c76..fd09a45c 100644
--- a/src/js/rendering/layer/LayersRenderer.js
+++ b/src/js/rendering/layer/LayersRenderer.js
@@ -58,6 +58,20 @@
     }
   };
 
+
+  /**
+   * See @pskl.rendering.frame.CachedFrameRenderer
+   * Same issue : FrameRenderer setDisplaySize destroys the canvas
+   * @param {Number} width
+   * @param {Number} height
+   */
+  ns.LayersRenderer.prototype.setDisplaySize = function (width, height) {
+    var size = this.getDisplaySize();
+    if (size.width !== width || size.height !== height) {
+      this.superclass.setDisplaySize.call(this, width, height);
+    }
+  };
+
   ns.LayersRenderer.prototype.getFrameForLayersAt_ = function (frameIndex, layers) {
     var frames = layers.map(function (l) {
       return l.getFrameAt(frameIndex);