fix(offscreen canvas): set negative position to move offscreen (opens…

…earch-project#50) re: opensearch-project#43
AMoo-Miki · Feb 8, 2019 · 0e676a2 · 0e676a2
1 parent a6a608e
commit 0e676a2
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/packages/osd-charts/src/lib/axes/canvas_text_bbox_calculator.ts b/packages/osd-charts/src/lib/axes/canvas_text_bbox_calculator.ts
@@ -9,6 +9,9 @@ export class CanvasTextBBoxCalculator implements BBoxCalculator {
 
   constructor(rootElement?: HTMLElement) {
     this.offscreenCanvas = document.createElement('canvas');
+    this.offscreenCanvas.style.position = 'absolute';
+    this.offscreenCanvas.style.top = '-9999px';
+
     this.context = this.offscreenCanvas.getContext('2d');
     this.attachedRoot = rootElement || document.documentElement;
     this.attachedRoot.appendChild(this.offscreenCanvas);