Add context check for __initRetinaScaling

fabricjs · Feb 19, 2022 · 8ccb8b7 · 8ccb8b7
1 parent 043f102
commit 8ccb8b7
Showing 1 changed file with 7 additions and 7 deletions.
diff --git a/src/static_canvas.class.js b/src/static_canvas.class.js
@@ -235,16 +235,19 @@
         return;
       }
       var scaleRatio = fabric.devicePixelRatio;
-      this.__initRetinaScaling(scaleRatio, this.lowerCanvasEl, this.contextContainer);
+      this.__initRetinaScaling(scaleRatio, this.lowerCanvasEl);
       if (this.upperCanvasEl) {
-        this.__initRetinaScaling(scaleRatio, this.upperCanvasEl, this.contextTop);
+        this.__initRetinaScaling(scaleRatio, this.upperCanvasEl);
       }
     },
 
-    __initRetinaScaling: function(scaleRatio, canvas, context) {
+    __initRetinaScaling: function(scaleRatio, canvas) {
       canvas.setAttribute('width', this.width * scaleRatio);
       canvas.setAttribute('height', this.height * scaleRatio);
-      context.scale(scaleRatio, scaleRatio);
+      var context = canvas.getContext('2d');
+      if (context) {
+        context.scale(scaleRatio, scaleRatio);
+      }
     },
 
 
@@ -319,8 +322,6 @@
       if (this.interactive) {
         this._applyCanvasStyle(this.lowerCanvasEl);
       }
-
-      this.contextContainer = this.lowerCanvasEl.getContext('2d');
     },
 
     /**
@@ -1568,7 +1569,6 @@
       }
       this.overlayImage = null;
       this._iTextInstances = null;
-      this.contextContainer = null;
       // restore canvas style
       this.lowerCanvasEl.classList.remove('lower-canvas');
       fabric.util.setStyle(this.lowerCanvasEl, this._originalCanvasStyle);