update CHANGELOG with new version

CHANGELOG.md

@@ -5,6 +5,10 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## Not released:
 
+## 4.1.2 - 2020-01-08
+
+* Fix possible `NaN` in content calculations
+
 ## 4.1.1 - 2020-01-07
 
 * Add ability to use `width = 0` and `height = 0` for `Konva.Image`.

konva.js

@@ -8,7 +8,7 @@
    * Konva JavaScript Framework v4.1.1
    * http://konvajs.org/
    * Licensed under the MIT
-   * Date: Tue Jan 07 2020
+   * Date: Wed Jan 08 2020
    *
    * Original work Copyright (C) 2011 - 2013 by Eric Rowell (KineticJS)
    * Modified work Copyright (C) 2014 - present by Anton Lavrenov (Konva)
@@ -6528,8 +6528,10 @@
           return {
               top: rect.top,
               left: rect.left,
-              scaleX: rect.width / this.content.clientWidth,
+              // sometimes clientWidth can be equals to 0
-              scaleY: rect.height / this.content.clientHeight,
+              // i saw it in react-konva test, looks like it is because of hidden testing element
+              scaleX: rect.width / this.content.clientWidth || 1,
+              scaleY: rect.height / this.content.clientHeight || 1,
           };
       };
       Stage.prototype._buildDOM = function () {

src/Stage.ts

@@ -1005,8 +1005,10 @@ export class Stage extends Container<BaseLayer> {
     return {
       top: rect.top,
       left: rect.left,
-      scaleX: rect.width / this.content.clientWidth,
+      // sometimes clientWidth can be equals to 0
-      scaleY: rect.height / this.content.clientHeight,
+      // i saw it in react-konva test, looks like it is because of hidden testing element
+      scaleX: rect.width / this.content.clientWidth || 1,
+      scaleY: rect.height / this.content.clientHeight || 1,
     };
   }
   _buildDOM() {