Prepare new release

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hdr-canvas",
-  "version": "0.0.5",
+  "version": "0.0.6",
   "description": "HDR capable HTML canvas",
   "main": "dist/hdr-canvas.js",
   "files": [

src/@types/HDRCanvas.d.ts

@@ -5,6 +5,7 @@ type HDRHTMLCanvasOptions = { [key in HDRHTMLCanvasOptionsType]?: string };
 
 interface HDRHTMLCanvasElement extends HTMLCanvasElement {
   configureHighDynamicRange(options: HDRHTMLCanvasOptions): void;
+  _getContext(contextId: string, options?: object): RenderingContext | null;
 }
 
 interface HDRImageData {

src/hdr-canvas.ts

@@ -1,7 +1,30 @@
 import {Uint16Image} from './Uint16Image'
 
+const hdr_options = {colorSpace: Uint16Image.DEFAULT_COLORSPACE, pixelFormat: 'float16'}
+
 export function initHDRCanvas(canvas : HDRHTMLCanvasElement) : RenderingContext | null {
   canvas.configureHighDynamicRange({mode: 'extended'});
-  const ctx = canvas.getContext("2d", {colorSpace: Uint16Image.DEFAULT_COLORSPACE, pixelFormat: 'float16'});
+  const ctx = canvas.getContext("2d", hdr_options);
   return ctx;
 }
+
+/* eslint-disable  @typescript-eslint/no-explicit-any */
+export function defaultGetContextHDR() {
+  (HTMLCanvasElement.prototype as HDRHTMLCanvasElement)._getContext = HTMLCanvasElement.prototype.getContext;
+  (HTMLCanvasElement.prototype as any).getContext = function(type: string, options: object) {
+
+    if (options !== undefined) {
+      options = Object.assign({}, options, hdr_options);
+    } else {
+      options = hdr_options;
+    }
+    return (this as HDRHTMLCanvasElement)._getContext(type, options);
+  }
+}
+
+/* eslint-disable  @typescript-eslint/no-explicit-any */
+export function resetGetContext() {
+  if (typeof (HTMLCanvasElement.prototype as HDRHTMLCanvasElement)._getContext === "function") {
+    HTMLCanvasElement.prototype.getContext = (HTMLCanvasElement.prototype as any)._getContext;
+  }
+}